Merge branch 'ytdl-org:master' into chelseafc-extractor

.github/workflows/ci.yml

@@ -1,81 +1,445 @@
 name: CI
-on: [push, pull_request]
+
+env:
+  all-cpython-versions: 2.6, 2.7, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12
+  main-cpython-versions: 2.7, 3.2, 3.5, 3.9, 3.11
+  pypy-versions: pypy-2.7, pypy-3.6, pypy-3.7
+  cpython-versions: main
+  test-set: core
+
+on:
+  push:
+    inputs:
+      cpython-versions:
+        type: string
+        default: all
+      test-set:
+        type: string
+        default: core
+  pull_request:
+    inputs:
+      cpython-versions:
+        type: string
+        default: main
+      test-set:
+        type: string
+        default: both
+  workflow_dispatch:
+    inputs:
+      cpython-versions:
+        type: choice
+        description: CPython versions (main = 2.7, 3.2, 3.5, 3.9, 3.11)
+        options:
+          - all
+          - main
+        required: true
+        default: main
+      test-set:
+        type: choice
+        description: core, download
+        options:
+          - both
+          - core
+          - download
+        required: true
+        default: both
+
+permissions:
+  contents: read
+
 jobs:
+  select:
+    name: Select tests from inputs
+    runs-on: ubuntu-latest
+    outputs:
+      cpython-versions: ${{ steps.run.outputs.cpython-versions }}
+      test-set: ${{ steps.run.outputs.test-set }}
+      own-pip-versions: ${{ steps.run.outputs.own-pip-versions }}
+    steps:
+    - name: Make version array
+      id: run
+      run: |
+        # Make a JSON Array from comma/space-separated string (no extra escaping)
+        json_list() { \
+          ret=""; IFS="${IFS},"; set -- $*; \
+          for a in "$@"; do \
+            ret=$(printf '%s"%s"' "${ret}${ret:+, }" "$a"); \
+          done; \
+          printf '[%s]' "$ret"; }
+        tests="${{ inputs.test-set || env.test-set }}"
+        [ $tests = both ] && tests="core download"
+        printf 'test-set=%s\n' "$(json_list $tests)" >> "$GITHUB_OUTPUT"
+        versions="${{ inputs.cpython-versions || env.cpython-versions }}"
+        if [ "$versions" = all ]; then \
+          versions="${{ env.all-cpython-versions }}"; else \
+          versions="${{ env.main-cpython-versions }}"; \
+        fi
+        printf 'cpython-versions=%s\n' \
+          "$(json_list ${versions}${versions:+, }${{ env.pypy-versions }})" >> "$GITHUB_OUTPUT"
+        # versions with a special get-pip.py in a per-version subdirectory
+        printf 'own-pip-versions=%s\n' \
+          "$(json_list 2.6, 2.7, 3.2, 3.3, 3.4, 3.5, 3.6)" >> "$GITHUB_OUTPUT"
   tests:
-    name: Tests
+    name: Run tests
+    needs: select
+    permissions:
+      contents: read
+      packages: write
     runs-on: ${{ matrix.os }}
+    env:
+      PIP: python -m pip
+      PIP_DISABLE_PIP_VERSION_CHECK: true
+      PIP_NO_PYTHON_VERSION_WARNING: true
     strategy:
       fail-fast: true
       matrix:
-        os: [ubuntu-18.04]
-        # TODO: python 2.6
-        python-version: [2.7, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, pypy-2.7, pypy-3.6, pypy-3.7]
+        os: [ubuntu-20.04]
+        python-version: ${{ fromJSON(needs.select.outputs.cpython-versions) }}
         python-impl: [cpython]
-        ytdl-test-set: [core, download]
+        ytdl-test-set: ${{ fromJSON(needs.select.outputs.test-set) }}
         run-tests-ext: [sh]
         include:
-        # python 3.2 is only available on windows via setup-python
         - os: windows-2019
-          python-version: 3.2
+          python-version: 3.4
           python-impl: cpython
-          ytdl-test-set: core
+          ytdl-test-set: ${{ contains(needs.select.outputs.test-set, 'core') && 'core' || 'nocore' }}
           run-tests-ext: bat
         - os: windows-2019
-          python-version: 3.2
+          python-version: 3.4
           python-impl: cpython
-          ytdl-test-set: download
+          ytdl-test-set: ${{ contains(needs.select.outputs.test-set, 'download') && 'download'  || 'nodownload' }}
           run-tests-ext: bat
         # jython
-        - os: ubuntu-18.04
+        - os: ubuntu-20.04
+          python-version: 2.7
           python-impl: jython
-          ytdl-test-set: core
+          ytdl-test-set: ${{ contains(needs.select.outputs.test-set, 'core') && 'core' || 'nocore' }}
           run-tests-ext: sh
-        - os: ubuntu-18.04
+        - os: ubuntu-20.04
+          python-version: 2.7
           python-impl: jython
-          ytdl-test-set: download
+          ytdl-test-set: ${{ contains(needs.select.outputs.test-set, 'download') && 'download'  || 'nodownload' }}
           run-tests-ext: sh
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      if: ${{ matrix.python-impl == 'cpython' }}
+    - name: Checkout
+      uses: actions/checkout@v3
+    #-------- Python 3 -----
+    - name: Set up supported Python ${{ matrix.python-version }}
+      id: setup-python
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version != '2.6' && matrix.python-version != '2.7' && matrix.python-version != '3.12'}}
+      # wrap broken actions/setup-python@v4
+      uses: ytdl-org/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
+        cache-build: true
+        allow-build: info
+    - name: Locate supported Python ${{ matrix.python-version }}
+      if: ${{ env.pythonLocation }}
+      shell: bash
+      run: |
+        echo "PYTHONHOME=${pythonLocation}" >> "$GITHUB_ENV"
+        export expected="${{ steps.setup-python.outputs.python-path }}"
+        dirname() { printf '%s\n' \
+            'import os, sys' \
+            'print(os.path.dirname(sys.argv[1]))' \
+            | ${expected} - "$1"; }
+        expd="$(dirname "$expected")"
+        export python="$(command -v python)"
+        [ "$expd" = "$(dirname "$python")" ] || echo "PATH=$expd:${PATH}" >> "$GITHUB_ENV"
+        [ -x "$python" ] || printf '%s\n' \
+            'import os' \
+            'exp = os.environ["expected"]' \
+            'python = os.environ["python"]' \
+            'exps = os.path.split(exp)' \
+            'if python and (os.path.dirname(python) == exp[0]):' \
+            '    exit(0)' \
+            'exps[1] = "python" + os.path.splitext(exps[1])[1]' \
+            'python = os.path.join(*exps)' \
+            'try:' \
+            '    os.symlink(exp, python)' \
+            'except AttributeError:' \
+            '    os.rename(exp, python)' \
+            | ${expected} -
+        printf '%s\n' \
+            'import sys' \
+            'print(sys.path)' \
+            | ${expected} -
+    #-------- Python 3.12 -
+    - name: Set up CPython 3.12 environment
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '3.12' }}
+      shell: bash
+      run: |
+        PYENV_ROOT=$HOME/.local/share/pyenv
+        echo "PYENV_ROOT=${PYENV_ROOT}" >> "$GITHUB_ENV"
+    - name: Cache Python 3.12
+      id: cache312
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '3.12' }}
+      uses: actions/cache@v3
+      with:
+        key: python-3.12
+        path: |
+          ${{ env.PYENV_ROOT }}
+    - name: Build and set up Python 3.12
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '3.12' && ! steps.cache312.outputs.cache-hit }}
+      # dl and build locally
+      shell: bash
+      run: |
+        # Install build environment
+        sudo apt-get install -y build-essential llvm libssl-dev tk-dev  \
+                      libncursesw5-dev libreadline-dev libsqlite3-dev   \
+                      libffi-dev xz-utils zlib1g-dev libbz2-dev liblzma-dev
+        # Download PyEnv from its GitHub repository.
+        export PYENV_ROOT=${{ env.PYENV_ROOT }}
+        export PATH=$PYENV_ROOT/bin:$PATH
+        git clone "https://github.com/pyenv/pyenv.git" "$PYENV_ROOT"
+        pyenv install 3.12.0b4
+    - name: Locate Python 3.12
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '3.12' }}
+      shell: bash
+      run: |
+        PYTHONHOME="${{ env.PYENV_ROOT }}/versions/3.12.0b4"
+        echo "PYTHONHOME=$PYTHONHOME" >> "$GITHUB_ENV"
+        echo "PATH=${PYTHONHOME}/bin:$PATH" >> "$GITHUB_ENV"
+    #-------- Python 2.7 --
+    - name: Set up Python 2.7
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '2.7' }}
+      # install 2.7
+      shell: bash
+      run: |
+        sudo apt-get install -y python2 python-is-python2
+        echo "PYTHONHOME=/usr" >> "$GITHUB_ENV"
+    #-------- Python 2.6 --
+    - name: Set up Python 2.6 environment
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '2.6' }}
+      shell: bash
+      run: |
+        openssl_name=openssl-1.0.2u
+        echo "openssl_name=${openssl_name}" >> "$GITHUB_ENV"
+        openssl_dir=$HOME/.local/opt/$openssl_name
+        echo "openssl_dir=${openssl_dir}" >> "$GITHUB_ENV"
+        PYENV_ROOT=$HOME/.local/share/pyenv
+        echo "PYENV_ROOT=${PYENV_ROOT}" >> "$GITHUB_ENV"
+        sudo apt-get install -y openssl ca-certificates
+    - name: Cache Python 2.6
+      id: cache26
+      if: ${{ matrix.python-version == '2.6' }}
+      uses: actions/cache@v3
+      with:
+        key: python-2.6.9
+        path: |
+          ${{ env.openssl_dir }}
+          ${{ env.PYENV_ROOT }}
+    - name: Build and set up Python 2.6
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '2.6' && ! steps.cache26.outputs.cache-hit }}
+      # dl and build locally
+      shell: bash
+      run: |
+        # Install build environment
+        sudo apt-get install -y build-essential llvm libssl-dev tk-dev  \
+                      libncursesw5-dev libreadline-dev libsqlite3-dev   \
+                      libffi-dev xz-utils zlib1g-dev libbz2-dev liblzma-dev
+        # Download and install OpenSSL 1.0.2, back in time
+        openssl_name=${{ env.openssl_name }}
+        openssl_targz=${openssl_name}.tar.gz
+        openssl_dir=${{ env.openssl_dir }}
+        openssl_inc=$openssl_dir/include
+        openssl_lib=$openssl_dir/lib
+        openssl_ssl=$openssl_dir/ssl
+        curl -L "https://www.openssl.org/source/$openssl_targz" -o $openssl_targz
+        tar -xf $openssl_targz
+        ( cd $openssl_name; \
+          ./config --prefix=$openssl_dir --openssldir=${openssl_dir}/ssl \
+            --libdir=lib -Wl,-rpath=${openssl_dir}/lib shared zlib-dynamic && \
+          make && \
+          make install )
+        rm -rf $openssl_name
+        rmdir $openssl_ssl/certs && ln -s /etc/ssl/certs $openssl_ssl/certs
+        # Download PyEnv from its GitHub repository.
+        export PYENV_ROOT=${{ env.PYENV_ROOT }}
+        export PATH=$PYENV_ROOT/bin:$PATH
+        git clone "https://github.com/pyenv/pyenv.git" "$PYENV_ROOT"
+        # Prevent pyenv build trying (and failing) to update pip
+        export GET_PIP=get-pip-2.6.py
+        echo 'import sys; sys.exit(0)' > ${GET_PIP}
+        GET_PIP=$(realpath $GET_PIP)
+        # Build and install Python
+        export CFLAGS="-I$openssl_inc"
+        export LDFLAGS="-L$openssl_lib"
+        export LD_LIBRARY_PATH="$openssl_lib"
+        pyenv install 2.6.9
+    - name: Locate Python 2.6
+      if: ${{ matrix.python-impl == 'cpython' && matrix.python-version == '2.6' }}
+      shell: bash
+      run: |
+        PYTHONHOME="${{ env.PYENV_ROOT }}/versions/2.6.9"
+        echo "PYTHONHOME=$PYTHONHOME" >> "$GITHUB_ENV"
+        echo "PATH=${PYTHONHOME}/bin:$PATH" >> "$GITHUB_ENV"
+        echo "LD_LIBRARY_PATH=${{ env.openssl_dir }}/lib${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}" >> "$GITHUB_ENV"
+    #-------- Jython ------
     - name: Set up Java 8
       if: ${{ matrix.python-impl == 'jython' }}
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v3
       with:
         java-version: 8
+        distribution: 'zulu'
+    - name: Setup Jython environment
+      if: ${{ matrix.python-impl == 'jython' }}
+      shell: bash
+      run: |
+        echo "JYTHON_ROOT=${HOME}/jython" >> "$GITHUB_ENV"
+        echo "PIP=pip" >> "$GITHUB_ENV"
+    - name: Cache Jython
+      id: cachejy
+      if: ${{ matrix.python-impl == 'jython' && matrix.python-version == '2.7' }}
+      uses: actions/cache@v3
+      with:
+        # 2.7.3 now available, may solve SNI issue
+        key: jython-2.7.1
+        path: |
+          ${{ env.JYTHON_ROOT }}
     - name: Install Jython
-      if: ${{ matrix.python-impl == 'jython' }}
+      if: ${{ matrix.python-impl == 'jython' && matrix.python-version == '2.7' && ! steps.cachejy.outputs.cache-hit }}
+      shell: bash
       run: |
-        wget https://repo1.maven.org/maven2/org/python/jython-installer/2.7.1/jython-installer-2.7.1.jar -O jython-installer.jar
-        java -jar jython-installer.jar -s -d "$HOME/jython"
-        echo "$HOME/jython/bin" >> $GITHUB_PATH
-    - name: Install nose
-      if: ${{ matrix.python-impl != 'jython' }}
-      run: pip install nose
-    - name: Install nose (Jython)
-      if: ${{ matrix.python-impl == 'jython' }}
-      # Working around deprecation of support for non-SNI clients at PyPI CDN (see https://status.python.org/incidents/hzmjhqsdjqgb)
+        JYTHON_ROOT="${{ env.JYTHON_ROOT }}"
+        curl -L "https://repo1.maven.org/maven2/org/python/jython-installer/2.7.1/jython-installer-2.7.1.jar" -o jython-installer.jar
+        java -jar jython-installer.jar -s -d "${JYTHON_ROOT}"
+        echo "${JYTHON_ROOT}/bin" >> "$GITHUB_PATH"
+    - name: Set up cached Jython
+      if: ${{ steps.cachejy.outputs.cache-hit }}
+      shell: bash
       run: |
-        wget https://files.pythonhosted.org/packages/99/4f/13fb671119e65c4dce97c60e67d3fd9e6f7f809f2b307e2611f4701205cb/nose-1.3.7-py2-none-any.whl
-        pip install nose-1.3.7-py2-none-any.whl
+        JYTHON_ROOT="${{ env.JYTHON_ROOT }}"
+        echo "${JYTHON_ROOT}/bin" >> $GITHUB_PATH
+    - name: Install supporting Python 2.7 if possible
+      if: ${{ steps.cachejy.outputs.cache-hit }}
+      shell: bash
+      run: |
+        sudo apt-get install -y python2.7 || true
+    #-------- pip ---------
+    - name: Set up supported Python ${{ matrix.python-version }} pip
+      if: ${{ (matrix.python-version != '3.2' && steps.setup-python.outputs.python-path) || matrix.python-version == '2.7' }}
+      # This step may run in either Linux or Windows
+      shell: bash
+      run: |
+        echo "$PATH"
+        echo "$PYTHONHOME"
+        # curl is available on both Windows and Linux, -L follows redirects, -O gets name
+        python -m ensurepip || python -m pip --version || { \
+          get_pip="${{ contains(needs.select.outputs.own-pip-versions, matrix.python-version) && format('{0}/', matrix.python-version) || '' }}"; \
+          curl -L -O "https://bootstrap.pypa.io/pip/${get_pip}get-pip.py"; \
+          python get-pip.py; }
+    - name: Set up Python 2.6 pip
+      if: ${{ matrix.python-version == '2.6' }}
+      shell: bash
+      run: |
+        python -m pip --version || { \
+          curl -L -O "https://bootstrap.pypa.io/pip/2.6/get-pip.py"; \
+          curl -L -O "https://files.pythonhosted.org/packages/ac/95/a05b56bb975efa78d3557efa36acaf9cf5d2fd0ee0062060493687432e03/pip-9.0.3-py2.py3-none-any.whl"; \
+          python get-pip.py --no-setuptools --no-wheel pip-9.0.3-py2.py3-none-any.whl; }
+        # work-around to invoke pip module on 2.6: https://bugs.python.org/issue2751
+        echo "PIP=python -m pip.__main__" >> "$GITHUB_ENV"
+    - name: Set up other Python ${{ matrix.python-version }} pip
+      if: ${{ matrix.python-version == '3.2' && steps.setup-python.outputs.python-path }}
+      shell: bash
+      run: |
+        python -m pip --version || { \
+          curl -L -O "https://bootstrap.pypa.io/pip/3.2/get-pip.py"; \
+          curl -L -O "https://files.pythonhosted.org/packages/b2/d0/cd115fe345dd6f07ec1c780020a7dfe74966fceeb171e0f20d1d4905b0b7/pip-7.1.2-py2.py3-none-any.whl"; \
+          python get-pip.py --no-setuptools --no-wheel pip-7.1.2-py2.py3-none-any.whl; }
+    #-------- unittest ----
+    - name: Upgrade Unittest for Python 2.6
+      if: ${{ matrix.python-version == '2.6' }}
+      shell: bash
+      run: |
+        # Work around deprecation of support for non-SNI clients at PyPI CDN (see https://status.python.org/incidents/hzmjhqsdjqgb)
+        $PIP -qq show unittest2 || { \
+          for u in "65/26/32b8464df2a97e6dd1b656ed26b2c194606c16fe163c695a992b36c11cdf/six-1.13.0-py2.py3-none-any.whl" \
+              "f2/94/3af39d34be01a24a6e65433d19e107099374224905f1e0cc6bbe1fd22a2f/argparse-1.4.0-py2.py3-none-any.whl" \
+              "c7/a3/c5da2a44c85bfbb6eebcfc1dde24933f8704441b98fdde6528f4831757a6/linecache2-1.0.0-py2.py3-none-any.whl" \
+              "17/0a/6ac05a3723017a967193456a2efa0aa9ac4b51456891af1e2353bb9de21e/traceback2-1.4.0-py2.py3-none-any.whl" \
+              "72/20/7f0f433060a962200b7272b8c12ba90ef5b903e218174301d0abfd523813/unittest2-1.1.0-py2.py3-none-any.whl"; do \
+            curl -L -O "https://files.pythonhosted.org/packages/${u}"; \
+            $PIP install ${u##*/}; \
+          done; }
+        # make tests use unittest2
+        for test in ./test/test_*.py ./test/helper.py; do
+          sed -r -i -e '/^import unittest$/s/test/test2 as unittest/' "$test"
+        done
+    #-------- nose --------
+    - name: Install nose for Python ${{ matrix.python-version }}
+      if: ${{ (matrix.python-version != '3.2' && steps.setup-python.outputs.python-path) || (matrix.python-impl == 'cpython' && (matrix.python-version == '2.7' || matrix.python-version == '3.12')) }}
+      shell: bash
+      run: |
+        echo "$PATH"
+        echo "$PYTHONHOME"
+        # Use PyNose for recent Pythons instead of Nose
+        py3ver="${{ matrix.python-version }}"
+        py3ver=${py3ver#3.}
+        [ "$py3ver" != "${{ matrix.python-version }}" ] && py3ver=${py3ver%.*} || py3ver=0
+        [ "$py3ver" -ge 9 ] && nose=pynose || nose=nose
+        $PIP -qq show $nose || $PIP install $nose
+    - name: Install nose for other Python 2
+      if: ${{ matrix.python-impl == 'jython' || (matrix.python-impl == 'cpython' && matrix.python-version == '2.6') }}
+      shell: bash
+      run: |
+        # Work around deprecation of support for non-SNI clients at PyPI CDN (see https://status.python.org/incidents/hzmjhqsdjqgb)
+        $PIP -qq show nose || { \
+          curl -L -O "https://files.pythonhosted.org/packages/99/4f/13fb671119e65c4dce97c60e67d3fd9e6f7f809f2b307e2611f4701205cb/nose-1.3.7-py2-none-any.whl"; \
+          $PIP install nose-1.3.7-py2-none-any.whl; }
+    - name: Install nose for other Python 3
+      if: ${{ matrix.python-version == '3.2' && steps.setup-python.outputs.python-path }}
+      shell: bash
+      run: |
+        $PIP -qq show nose || { \
+          curl -L -O "https://files.pythonhosted.org/packages/15/d8/dd071918c040f50fa1cf80da16423af51ff8ce4a0f2399b7bf8de45ac3d9/nose-1.3.7-py3-none-any.whl"; \
+          $PIP install nose-1.3.7-py3-none-any.whl; }
+    - name: Set up nosetest test
+      if: ${{ contains(needs.select.outputs.test-set, matrix.ytdl-test-set ) }}
+      shell: bash
+      run: |
+        # set PYTHON_VER
+        PYTHON_VER=${{ matrix.python-version }}
+        [ "${PYTHON_VER#*-}" != "$PYTHON_VER" ] || PYTHON_VER="${{ matrix.python-impl }}-${PYTHON_VER}"
+        echo "PYTHON_VER=$PYTHON_VER" >> "$GITHUB_ENV"
+        echo "PYTHON_IMPL=${{ matrix.python-impl }}" >> "$GITHUB_ENV"
+        # define a test to validate the Python version used by nosetests
+        printf '%s\n' \
+          'from __future__ import unicode_literals' \
+          'import sys, os, platform' \
+          'try:' \
+          '    import unittest2 as unittest' \
+          'except ImportError:' \
+          '    import unittest' \
+          'class TestPython(unittest.TestCase):' \
+          '    def setUp(self):' \
+          '        self.ver = os.environ["PYTHON_VER"].split("-")' \
+          '    def test_python_ver(self):' \
+          '        self.assertEqual(["%d" % v for v in sys.version_info[:2]], self.ver[-1].split(".")[:2])' \
+          '        self.assertTrue(sys.version.startswith(self.ver[-1]))' \
+          '        self.assertIn(self.ver[0], ",".join((sys.version, platform.python_implementation())).lower())' \
+          '    def test_python_impl(self):' \
+          '        self.assertIn(platform.python_implementation().lower(), (os.environ["PYTHON_IMPL"], self.ver[0]))' \
+          > test/test_python.py
+    #-------- TESTS -------
     - name: Run tests
+      if: ${{ contains(needs.select.outputs.test-set, matrix.ytdl-test-set ) }}
       continue-on-error: ${{ matrix.ytdl-test-set == 'download' || matrix.python-impl == 'jython' }}
       env:
         YTDL_TEST_SET: ${{ matrix.ytdl-test-set }}
-      run: ./devscripts/run_tests.${{ matrix.run-tests-ext }}
+      run: |
+        ./devscripts/run_tests.${{ matrix.run-tests-ext }}
   flake8:
     name: Linter
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.9
     - name: Install flake8
       run: pip install flake8
     - name: Run flake8
       run: flake8 .
+

README.md

@@ -1000,6 +1000,8 @@ To run the test, simply invoke your favorite test runner, or execute a test file
     python test/test_download.py
     nosetests
 
+For Python versions 3.6 and later, you can use [pynose](https://pypi.org/project/pynose/) to implement `nosetests`. The original [nose](https://pypi.org/project/nose/) has not been upgraded for 3.10 and later.
+
 See item 6 of [new extractor tutorial](#adding-support-for-a-new-site) for how to run extractor specific test cases.
 
 If you want to create a build of youtube-dl yourself, you'll need
@@ -1091,7 +1093,7 @@ In any case, thank you very much for your contributions!
 
 ## youtube-dl coding conventions
 
-This section introduces a guide lines for writing idiomatic, robust and future-proof extractor code.
+This section introduces guidelines for writing idiomatic, robust and future-proof extractor code.
 
 Extractors are very fragile by nature since they depend on the layout of the source data provided by 3rd party media hosters out of your control and this layout tends to change. As an extractor implementer your task is not only to write code that will extract media links and metadata correctly but also to minimize dependency on the source's layout and even to make the code foresee potential future changes and be ready for that. This is important because it will allow the extractor not to break on minor layout changes thus keeping old youtube-dl versions working. Even though this breakage issue is easily fixed by emitting a new version of youtube-dl with a fix incorporated, all the previous versions become broken in all repositories and distros' packages that may not be so prompt in fetching the update from us. Needless to say, some non rolling release distros may never receive an update at all.
 
@@ -1331,7 +1333,7 @@ Wrap all extracted numeric data into safe functions from [`youtube_dl/utils.py`]
 
 Use `url_or_none` for safe URL processing.
 
-Use `try_get` for safe metadata extraction from parsed JSON.
+Use `traverse_obj` for safe metadata extraction from parsed JSON.
 
 Use `unified_strdate` for uniform `upload_date` or any `YYYYMMDD` meta field extraction, `unified_timestamp` for uniform `timestamp` extraction, `parse_filesize` for `filesize` extraction, `parse_count` for count meta fields extraction, `parse_resolution`, `parse_duration` for `duration` extraction, `parse_age_limit` for `age_limit` extraction.
 
@@ -1340,18 +1342,105 @@ Explore [`youtube_dl/utils.py`](https://github.com/ytdl-org/youtube-dl/blob/mast
 #### More examples
 
 ##### Safely extract optional description from parsed JSON
+
+When processing complex JSON, as often returned by site API requests or stashed in web pages for "hydration", you can use the `traverse_obj()` utility function to handle multiple fallback values and to ensure the expected type of metadata items. The function's docstring defines how the function works: also review usage in the codebase for more examples.
+
+In this example, a text `description`, or `None`, is pulled from the `.result.video[0].summary` member of the parsed JSON `response`, if available.
+
+```python
+description = traverse_obj(response, ('result', 'video', 0, 'summary', T(compat_str)))
+```
+`T(...)` is a shorthand for a set literal; if you hate people who still run Python 2.6, `T(type_or_transformation)` could be written as a set literal `{type_or_transformation}`.
+
+Some extractors use the older and less capable `try_get()` function in the same way.
+
 ```python
 description = try_get(response, lambda x: x['result']['video'][0]['summary'], compat_str)
 ```
 
 ##### Safely extract more optional metadata
+
+In this example, various optional metadata values are extracted from the `.result.video[0]` member of the parsed JSON `response`, which is expected to be a JS object, parsed into a `dict`, with no crash if that isn't so, or if any of the target values are missing or invalid.
+
 ```python
-video = try_get(response, lambda x: x['result']['video'][0], dict) or {}
+video = traverse_obj(response, ('result', 'video', 0, T(dict))) or {}
+# formerly:
+# video = try_get(response, lambda x: x['result']['video'][0], dict) or {}
 description = video.get('summary')
 duration = float_or_none(video.get('durationMs'), scale=1000)
 view_count = int_or_none(video.get('views'))
 ```
 
+#### Safely extract nested lists
+
+Suppose you've extracted JSON like this into a Python data structure named `media_json` using, say, the `_download_json()` or `_parse_json()` methods of `InfoExtractor`:
+```json
+{
+    "title": "Example video",
+    "comment": "try extracting this",
+    "media": [{
+        "type": "bad",
+        "size": 320,
+        "url": "https://some.cdn.site/bad.mp4"
+    }, {
+        "type": "streaming",
+        "url": "https://some.cdn.site/hls.m3u8"
+    }, {
+        "type": "super",
+        "size": 1280,
+        "url": "https://some.cdn.site/good.webm"
+    }],
+    "moreStuff": "more values",
+    ...
+}
+```
+
+Then extractor code like this can collect the various fields of the JSON:
+```python
+...
+from ..utils import (
+    determine_ext,
+    int_or_none,
+    T,
+    traverse_obj,
+    txt_or_none,
+    url_or_none,
+)
+...
+        ...
+        info_dict = {}
+        # extract title and description if valid and not empty
+        info_dict.update(traverse_obj(media_json, {
+            'title': ('title', T(txt_or_none)),
+            'description': ('comment', T(txt_or_none)),
+        }))
+
+        # extract any recognisable media formats
+        fmts = []
+        # traverse into "media" list, extract `dict`s with desired keys
+        for fmt in traverse_obj(media_json, ('media', Ellipsis, {
+                'format_id': ('type', T(txt_or_none)),
+                'url': ('url', T(url_or_none)),
+                'width': ('size', T(int_or_none)), })):
+            # bad `fmt` values were `None` and removed
+            if 'url' not in fmt:
+                continue
+            fmt_url = fmt['url']  # known to be valid URL
+            ext = determine_ext(fmt_url)
+            if ext == 'm3u8':
+                fmts.extend(self._extract_m3u8_formats(fmt_url, video_id, 'mp4', fatal=False))
+            else:
+                fmt['ext'] = ext
+                fmts.append(fmt)
+
+        # sort, raise if no formats
+        self._sort_formats(fmts)
+
+        info_dict['formats'] = fmts
+        ...
+```
+The extractor raises an exception rather than random crashes if the JSON structure changes so that no formats are found.
+
 # EMBEDDING YOUTUBE-DL
 
 youtube-dl makes the best effort to be a good command-line program, and thus should be callable from any programming language. If you encounter any problems parsing its output, feel free to [create a report](https://github.com/ytdl-org/youtube-dl/issues/new).

devscripts/__init__.py

@@ -0,0 +1 @@
+# Empty file needed to make devscripts.utils properly importable from outside

devscripts/bash-completion.py

@@ -5,8 +5,12 @@ import os
 from os.path import dirname as dirn
 import sys
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
+
 import youtube_dl
+from youtube_dl.compat import compat_open as open
+
+from utils import read_file
 
 BASH_COMPLETION_FILE = "youtube-dl.bash-completion"
 BASH_COMPLETION_TEMPLATE = "devscripts/bash-completion.in"
@@ -18,9 +22,8 @@ def build_completion(opt_parser):
         for option in group.option_list:
             # for every long flag
             opts_flag.append(option.get_opt_string())
-    with open(BASH_COMPLETION_TEMPLATE) as f:
-        template = f.read()
-    with open(BASH_COMPLETION_FILE, "w") as f:
+    template = read_file(BASH_COMPLETION_TEMPLATE)
+    with open(BASH_COMPLETION_FILE, "w", encoding='utf-8') as f:
         # just using the special char
         filled_template = template.replace("{{flags}}", " ".join(opts_flag))
         f.write(filled_template)

devscripts/cli_to_api.py

@@ -49,15 +49,34 @@ def cli_to_api(*opts):
 
     # from https://github.com/yt-dlp/yt-dlp/issues/5859#issuecomment-1363938900
     default = parsed_options([])
-    diff = dict((k, v) for k, v in parsed_options(opts).items() if default[k] != v)
+
+    def neq_opt(a, b):
+        if a == b:
+            return False
+        if a is None and repr(type(object)).endswith(".utils.DateRange'>"):
+            return '0001-01-01 - 9999-12-31' != '{0}'.format(b)
+        return a != b
+
+    diff = dict((k, v) for k, v in parsed_options(opts).items() if neq_opt(default[k], v))
     if 'postprocessors' in diff:
         diff['postprocessors'] = [pp for pp in diff['postprocessors'] if pp not in default['postprocessors']]
     return diff
 
 
 def main():
-    from pprint import pprint
-    pprint(cli_to_api(*sys.argv))
+    from pprint import PrettyPrinter
+
+    pprint = PrettyPrinter()
+    super_format = pprint.format
+
+    def format(object, context, maxlevels, level):
+        if repr(type(object)).endswith(".utils.DateRange'>"):
+            return '{0}: {1}>'.format(repr(object)[:-2], object), True, False
+        return super_format(object, context, maxlevels, level)
+
+    pprint.format = format
+
+    pprint.pprint(cli_to_api(*sys.argv))
 
 
 if __name__ == '__main__':

devscripts/create-github-release.py

@@ -1,7 +1,6 @@
 #!/usr/bin/env python
 from __future__ import unicode_literals
 
-import io
 import json
 import mimetypes
 import netrc
@@ -10,7 +9,9 @@ import os
 import re
 import sys
 
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 
 from youtube_dl.compat import (
     compat_basestring,
@@ -22,6 +23,7 @@ from youtube_dl.utils import (
     make_HTTPS_handler,
     sanitized_Request,
 )
+from utils import read_file
 
 
 class GitHubReleaser(object):
@@ -89,8 +91,7 @@ def main():
 
     changelog_file, version, build_path = args
 
-    with io.open(changelog_file, encoding='utf-8') as inf:
-        changelog = inf.read()
+    changelog = read_file(changelog_file)
 
     mobj = re.search(r'(?s)version %s\n{2}(.+?)\n{3}' % version, changelog)
     body = mobj.group(1) if mobj else ''

devscripts/fish-completion.py

@@ -6,10 +6,13 @@ import os
 from os.path import dirname as dirn
 import sys
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
+
 import youtube_dl
 from youtube_dl.utils import shell_quote
 
+from utils import read_file, write_file
+
 FISH_COMPLETION_FILE = 'youtube-dl.fish'
 FISH_COMPLETION_TEMPLATE = 'devscripts/fish-completion.in'
 
@@ -38,11 +41,9 @@ def build_completion(opt_parser):
             complete_cmd.extend(EXTRA_ARGS.get(long_option, []))
             commands.append(shell_quote(complete_cmd))
 
-    with open(FISH_COMPLETION_TEMPLATE) as f:
-        template = f.read()
+    template = read_file(FISH_COMPLETION_TEMPLATE)
     filled_template = template.replace('{{commands}}', '\n'.join(commands))
-    with open(FISH_COMPLETION_FILE, 'w') as f:
-        f.write(filled_template)
+    write_file(FISH_COMPLETION_FILE, filled_template)
 
 
 parser = youtube_dl.parseOpts()[0]

devscripts/gh-pages/add-version.py

@@ -6,16 +6,21 @@ import sys
 import hashlib
 import os.path
 
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(dirn(os.path.abspath(__file__)))))
+
+from devscripts.utils import read_file, write_file
+from youtube_dl.compat import compat_open as open
 
 if len(sys.argv) <= 1:
     print('Specify the version number as parameter')
     sys.exit()
 version = sys.argv[1]
 
-with open('update/LATEST_VERSION', 'w') as f:
-    f.write(version)
+write_file('update/LATEST_VERSION', version)
 
-versions_info = json.load(open('update/versions.json'))
+versions_info = json.loads(read_file('update/versions.json'))
 if 'signature' in versions_info:
     del versions_info['signature']
 
@@ -39,5 +44,5 @@ for key, filename in filenames.items():
 versions_info['versions'][version] = new_version
 versions_info['latest'] = version
 
-with open('update/versions.json', 'w') as jsonf:
-    json.dump(versions_info, jsonf, indent=4, sort_keys=True)
+with open('update/versions.json', 'w', encoding='utf-8') as jsonf:
+    json.dumps(versions_info, jsonf, indent=4, sort_keys=True)

devscripts/gh-pages/generate-download.py

@@ -2,14 +2,21 @@
 from __future__ import unicode_literals
 
 import json
+import os.path
+import sys
 
-versions_info = json.load(open('update/versions.json'))
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+
+from utils import read_file, write_file
+
+versions_info = json.loads(read_file('update/versions.json'))
 version = versions_info['latest']
 version_dict = versions_info['versions'][version]
 
 # Read template page
-with open('download.html.in', 'r', encoding='utf-8') as tmplf:
-    template = tmplf.read()
+template = read_file('download.html.in')
 
 template = template.replace('@PROGRAM_VERSION@', version)
 template = template.replace('@PROGRAM_URL@', version_dict['bin'][0])
@@ -18,5 +25,5 @@ template = template.replace('@EXE_URL@', version_dict['exe'][0])
 template = template.replace('@EXE_SHA256SUM@', version_dict['exe'][1])
 template = template.replace('@TAR_URL@', version_dict['tar'][0])
 template = template.replace('@TAR_SHA256SUM@', version_dict['tar'][1])
-with open('download.html', 'w', encoding='utf-8') as dlf:
-    dlf.write(template)
+
+write_file('download.html', template)

devscripts/gh-pages/update-copyright.py

@@ -5,17 +5,22 @@ from __future__ import with_statement, unicode_literals
 
 import datetime
 import glob
-import io  # For Python 2 compatibility
 import os
 import re
+import sys
 
-year = str(datetime.datetime.now().year)
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(dirn(os.path.abspath(__file__)))))
+
+from devscripts.utils import read_file, write_file
+from youtube_dl import compat_str
+
+year = compat_str(datetime.datetime.now().year)
 for fn in glob.glob('*.html*'):
-    with io.open(fn, encoding='utf-8') as f:
-        content = f.read()
+    content = read_file(fn)
     newc = re.sub(r'(?P<copyright>Copyright © 2011-)(?P<year>[0-9]{4})', 'Copyright © 2011-' + year, content)
     if content != newc:
         tmpFn = fn + '.part'
-        with io.open(tmpFn, 'wt', encoding='utf-8') as outf:
-            outf.write(newc)
+        write_file(tmpFn, newc)
         os.rename(tmpFn, fn)

devscripts/gh-pages/update-feed.py

@@ -2,10 +2,16 @@
 from __future__ import unicode_literals
 
 import datetime
-import io
 import json
+import os.path
 import textwrap
+import sys
 
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
+
+from utils import write_file
 
 atom_template = textwrap.dedent("""\
     <?xml version="1.0" encoding="utf-8"?>
@@ -72,5 +78,4 @@ for v in versions:
 entries_str = textwrap.indent(''.join(entries), '\t')
 atom_template = atom_template.replace('@ENTRIES@', entries_str)
 
-with io.open('update/releases.atom', 'w', encoding='utf-8') as atom_file:
-    atom_file.write(atom_template)
+write_file('update/releases.atom', atom_template)

devscripts/gh-pages/update-sites.py

@@ -5,15 +5,17 @@ import sys
 import os
 import textwrap
 
+dirn = os.path.dirname
+
 # We must be able to import youtube_dl
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(dirn(os.path.abspath(__file__)))))
 
 import youtube_dl
+from devscripts.utils import read_file, write_file
 
 
 def main():
-    with open('supportedsites.html.in', 'r', encoding='utf-8') as tmplf:
-        template = tmplf.read()
+    template = read_file('supportedsites.html.in')
 
     ie_htmls = []
     for ie in youtube_dl.list_extractors(age_limit=None):
@@ -29,8 +31,7 @@ def main():
 
     template = template.replace('@SITES@', textwrap.indent('\n'.join(ie_htmls), '\t'))
 
-    with open('supportedsites.html', 'w', encoding='utf-8') as sitesf:
-        sitesf.write(template)
+    write_file('supportedsites.html', template)
 
 
 if __name__ == '__main__':

devscripts/make_contributing.py

@@ -1,10 +1,11 @@
 #!/usr/bin/env python
 from __future__ import unicode_literals
 
-import io
 import optparse
 import re
 
+from utils import read_file, write_file
+
 
 def main():
     parser = optparse.OptionParser(usage='%prog INFILE OUTFILE')
@@ -14,8 +15,7 @@ def main():
 
     infile, outfile = args
 
-    with io.open(infile, encoding='utf-8') as inf:
-        readme = inf.read()
+    readme = read_file(infile)
 
     bug_text = re.search(
         r'(?s)#\s*BUGS\s*[^\n]*\s*(.*?)#\s*COPYRIGHT', readme).group(1)
@@ -25,8 +25,7 @@ def main():
 
     out = bug_text + dev_text
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
-        outf.write(out)
+    write_file(outfile, out)
 
 
 if __name__ == '__main__':

devscripts/make_issue_template.py

@@ -1,8 +1,11 @@
 #!/usr/bin/env python
 from __future__ import unicode_literals
 
-import io
 import optparse
+import os.path
+import sys
+
+from utils import read_file, read_version, write_file
 
 
 def main():
@@ -13,17 +16,11 @@ def main():
 
     infile, outfile = args
 
-    with io.open(infile, encoding='utf-8') as inf:
-        issue_template_tmpl = inf.read()
+    issue_template_tmpl = read_file(infile)
 
-    # Get the version from youtube_dl/version.py without importing the package
-    exec(compile(open('youtube_dl/version.py').read(),
-                 'youtube_dl/version.py', 'exec'))
+    out = issue_template_tmpl % {'version': read_version()}
 
-    out = issue_template_tmpl % {'version': locals()['__version__']}
-
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
-        outf.write(out)
+    write_file(outfile, out)
 
 if __name__ == '__main__':
     main()

devscripts/make_lazy_extractors.py

@@ -1,35 +1,48 @@
 from __future__ import unicode_literals, print_function
 
 from inspect import getsource
-import io
 import os
 from os.path import dirname as dirn
+import re
 import sys
 
 print('WARNING: Lazy loading extractors is an experimental feature that may not always work', file=sys.stderr)
 
-sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 
 lazy_extractors_filename = sys.argv[1]
 if os.path.exists(lazy_extractors_filename):
     os.remove(lazy_extractors_filename)
 # Py2: may be confused by leftover lazy_extractors.pyc
-try:
-    os.remove(lazy_extractors_filename + 'c')
-except OSError:
-    pass
+if sys.version_info[0] < 3:
+    for c in ('c', 'o'):
+        try:
+            os.remove(lazy_extractors_filename + 'c')
+        except OSError:
+            pass
+
+from devscripts.utils import read_file, write_file
+from youtube_dl.compat import compat_register_utf8
+
+compat_register_utf8()
 
 from youtube_dl.extractor import _ALL_CLASSES
 from youtube_dl.extractor.common import InfoExtractor, SearchInfoExtractor
 
-with open('devscripts/lazy_load_template.py', 'rt') as f:
-    module_template = f.read()
+module_template = read_file('devscripts/lazy_load_template.py')
+
+
+def get_source(m):
+    return re.sub(r'(?m)^\s*#.*\n', '', getsource(m))
+
 
 module_contents = [
-    module_template + '\n' + getsource(InfoExtractor.suitable) + '\n',
+    module_template,
+    get_source(InfoExtractor.suitable),
+    get_source(InfoExtractor._match_valid_url) + '\n',
     'class LazyLoadSearchExtractor(LazyLoadExtractor):\n    pass\n',
     # needed for suitable() methods of Youtube extractor (see #28780)
-    'from youtube_dl.utils import parse_qs\n',
+    'from youtube_dl.utils import parse_qs, variadic\n',
 ]
 
 ie_template = '''
@@ -62,7 +75,7 @@ def build_lazy_ie(ie, name):
         valid_url=valid_url,
         module=ie.__module__)
     if ie.suitable.__func__ is not InfoExtractor.suitable.__func__:
-        s += '\n' + getsource(ie.suitable)
+        s += '\n' + get_source(ie.suitable)
     if hasattr(ie, '_make_valid_url'):
         # search extractors
         s += make_valid_template.format(valid_url=ie._make_valid_url())
@@ -102,7 +115,17 @@ for ie in ordered_cls:
 module_contents.append(
     '_ALL_CLASSES = [{0}]'.format(', '.join(names)))
 
-module_src = '\n'.join(module_contents) + '\n'
+module_src = '\n'.join(module_contents)
 
-with io.open(lazy_extractors_filename, 'wt', encoding='utf-8') as f:
-    f.write(module_src)
+write_file(lazy_extractors_filename, module_src + '\n')
+
+# work around JVM byte code module limit in Jython
+if sys.platform.startswith('java') and sys.version_info[:2] == (2, 7):
+    import subprocess
+    from youtube_dl.compat import compat_subprocess_get_DEVNULL
+    # if Python 2.7 is available, use it to compile the module for Jython
+    try:
+        # if Python 2.7 is available, use it to compile the module for Jython
+        subprocess.check_call(['python2.7', '-m', 'py_compile', lazy_extractors_filename], stdout=compat_subprocess_get_DEVNULL())
+    except Exception:
+        pass

devscripts/make_readme.py

@@ -1,8 +1,14 @@
 from __future__ import unicode_literals
 
-import io
-import sys
+import os.path
 import re
+import sys
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
+
+from utils import read_file
+from youtube_dl.compat import compat_open as open
 
 README_FILE = 'README.md'
 helptext = sys.stdin.read()
@@ -10,8 +16,7 @@ helptext = sys.stdin.read()
 if isinstance(helptext, bytes):
     helptext = helptext.decode('utf-8')
 
-with io.open(README_FILE, encoding='utf-8') as f:
-    oldreadme = f.read()
+oldreadme = read_file(README_FILE)
 
 header = oldreadme[:oldreadme.index('# OPTIONS')]
 footer = oldreadme[oldreadme.index('# CONFIGURATION'):]
@@ -20,7 +25,7 @@ options = helptext[helptext.index('  General Options:') + 19:]
 options = re.sub(r'(?m)^  (\w.+)$', r'## \1', options)
 options = '# OPTIONS\n' + options + '\n'
 
-with io.open(README_FILE, 'w', encoding='utf-8') as f:
+with open(README_FILE, 'w', encoding='utf-8') as f:
     f.write(header)
     f.write(options)
     f.write(footer)

devscripts/make_supportedsites.py

@@ -1,17 +1,19 @@
 #!/usr/bin/env python
 from __future__ import unicode_literals
 
-import io
 import optparse
-import os
+import os.path
 import sys
 
-
 # Import youtube_dl
-ROOT_DIR = os.path.join(os.path.dirname(__file__), '..')
-sys.path.insert(0, ROOT_DIR)
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
+
 import youtube_dl
 
+from utils import write_file
+
 
 def main():
     parser = optparse.OptionParser(usage='%prog OUTFILE.md')
@@ -38,8 +40,7 @@ def main():
         ' - ' + md + '\n'
         for md in gen_ies_md(ies))
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
-        outf.write(out)
+    write_file(outfile, out)
 
 
 if __name__ == '__main__':

devscripts/prepare_manpage.py

@@ -1,13 +1,13 @@
 from __future__ import unicode_literals
 
-import io
 import optparse
 import os.path
 import re
 
+from utils import read_file, write_file
+
 ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 README_FILE = os.path.join(ROOT_DIR, 'README.md')
-
 PREFIX = r'''%YOUTUBE-DL(1)
 
 # NAME
@@ -29,8 +29,7 @@ def main():
 
     outfile, = args
 
-    with io.open(README_FILE, encoding='utf-8') as f:
-        readme = f.read()
+    readme = read_file(README_FILE)
 
     readme = re.sub(r'(?s)^.*?(?=# DESCRIPTION)', '', readme)
     readme = re.sub(r'\s+youtube-dl \[OPTIONS\] URL \[URL\.\.\.\]', '', readme)
@@ -38,8 +37,7 @@ def main():
 
     readme = filter_options(readme)
 
-    with io.open(outfile, 'w', encoding='utf-8') as outf:
-        outf.write(readme)
+    write_file(outfile, readme)
 
 
 def filter_options(readme):

devscripts/utils.py

@@ -0,0 +1,62 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import argparse
+import functools
+import os.path
+import subprocess
+import sys
+
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
+
+from youtube_dl.compat import (
+    compat_kwargs,
+    compat_open as open,
+)
+
+
+def read_file(fname):
+    with open(fname, encoding='utf-8') as f:
+        return f.read()
+
+
+def write_file(fname, content, mode='w'):
+    with open(fname, mode, encoding='utf-8') as f:
+        return f.write(content)
+
+
+def read_version(fname='youtube_dl/version.py'):
+    """Get the version without importing the package"""
+    exec(compile(read_file(fname), fname, 'exec'))
+    return locals()['__version__']
+
+
+def get_filename_args(has_infile=False, default_outfile=None):
+    parser = argparse.ArgumentParser()
+    if has_infile:
+        parser.add_argument('infile', help='Input file')
+    kwargs = {'nargs': '?', 'default': default_outfile} if default_outfile else {}
+    kwargs['help'] = 'Output file'
+    parser.add_argument('outfile', **compat_kwargs(kwargs))
+
+    opts = parser.parse_args()
+    if has_infile:
+        return opts.infile, opts.outfile
+    return opts.outfile
+
+
+def compose_functions(*functions):
+    return lambda x: functools.reduce(lambda y, f: f(y), functions, x)
+
+
+def run_process(*args, **kwargs):
+    kwargs.setdefault('text', True)
+    kwargs.setdefault('check', True)
+    kwargs.setdefault('capture_output', True)
+    if kwargs['text']:
+        kwargs.setdefault('encoding', 'utf-8')
+        kwargs.setdefault('errors', 'replace')
+        kwargs = compat_kwargs(kwargs)
+    return subprocess.run(args, **kwargs)

devscripts/zsh-completion.py

@@ -7,6 +7,8 @@ import sys
 
 sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
 import youtube_dl
+from utils import read_file, write_file
+
 
 ZSH_COMPLETION_FILE = "youtube-dl.zsh"
 ZSH_COMPLETION_TEMPLATE = "devscripts/zsh-completion.in"
@@ -34,15 +36,13 @@ def build_completion(opt_parser):
 
     flags = [opt.get_opt_string() for opt in opts]
 
-    with open(ZSH_COMPLETION_TEMPLATE) as f:
-        template = f.read()
+    template = read_file(ZSH_COMPLETION_TEMPLATE)
 
     template = template.replace("{{fileopts}}", "|".join(fileopts))
     template = template.replace("{{diropts}}", "|".join(diropts))
     template = template.replace("{{flags}}", " ".join(flags))
 
-    with open(ZSH_COMPLETION_FILE, "w") as f:
-        f.write(template)
+    write_file(ZSH_COMPLETION_FILE, template)
 
 
 parser = youtube_dl.parseOpts()[0]

test/helper.py

@@ -1,7 +1,6 @@
 from __future__ import unicode_literals
 
 import errno
-import io
 import hashlib
 import json
 import os.path
@@ -9,14 +8,17 @@ import re
 import types
 import ssl
 import sys
+import unittest
 
 import youtube_dl.extractor
 from youtube_dl import YoutubeDL
 from youtube_dl.compat import (
+    compat_open as open,
     compat_os_name,
     compat_str,
 )
 from youtube_dl.utils import (
+    IDENTITY,
     preferredencoding,
     write_string,
 )
@@ -27,10 +29,10 @@ def get_params(override=None):
                                    "parameters.json")
     LOCAL_PARAMETERS_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                          "local_parameters.json")
-    with io.open(PARAMETERS_FILE, encoding='utf-8') as pf:
+    with open(PARAMETERS_FILE, encoding='utf-8') as pf:
         parameters = json.load(pf)
     if os.path.exists(LOCAL_PARAMETERS_FILE):
-        with io.open(LOCAL_PARAMETERS_FILE, encoding='utf-8') as pf:
+        with open(LOCAL_PARAMETERS_FILE, encoding='utf-8') as pf:
             parameters.update(json.load(pf))
     if override:
         parameters.update(override)
@@ -72,7 +74,8 @@ class FakeYDL(YoutubeDL):
     def to_screen(self, s, skip_eol=None):
         print(s)
 
-    def trouble(self, s, tb=None):
+    def trouble(self, *args, **kwargs):
+        s = args[0] if len(args) > 0 else kwargs.get('message', 'Missing message')
         raise Exception(s)
 
     def download(self, x):
@@ -139,7 +142,7 @@ def expect_value(self, got, expected, field):
         self.assertTrue(
             contains_str in got,
             'field %s (value: %r) should contain %r' % (field, got, contains_str))
-    elif isinstance(expected, compat_str) and re.match(r'^lambda \w+:', expected):
+    elif isinstance(expected, compat_str) and re.match(r'lambda \w+:', expected):
         fn = eval(expected)
         suite = expected.split(':', 1)[1].strip()
         self.assertTrue(
@@ -297,3 +300,7 @@ def http_server_port(httpd):
     else:
         sock = httpd.socket
     return sock.getsockname()[1]
+
+
+def expectedFailureIf(cond):
+    return unittest.expectedFailure if cond else IDENTITY

test/test_InfoExtractor.py

@@ -3,19 +3,37 @@
 from __future__ import unicode_literals
 
 # Allow direct execution
-import io
 import os
 import sys
 import unittest
+
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
-from test.helper import FakeYDL, expect_dict, expect_value, http_server_port
-from youtube_dl.compat import compat_etree_fromstring, compat_http_server
-from youtube_dl.extractor.common import InfoExtractor
-from youtube_dl.extractor import YoutubeIE, get_info_extractor
-from youtube_dl.utils import encode_data_uri, strip_jsonp, ExtractorError, RegexNotFoundError
 import threading
 
+from test.helper import (
+    expect_dict,
+    expect_value,
+    FakeYDL,
+    http_server_port,
+)
+from youtube_dl.compat import (
+    compat_etree_fromstring,
+    compat_http_server,
+    compat_open as open,
+)
+from youtube_dl.extractor.common import InfoExtractor
+from youtube_dl.extractor import (
+    get_info_extractor,
+    YoutubeIE,
+)
+from youtube_dl.utils import (
+    encode_data_uri,
+    ExtractorError,
+    RegexNotFoundError,
+    strip_jsonp,
+)
+
 
 TEAPOT_RESPONSE_STATUS = 418
 TEAPOT_RESPONSE_BODY = "<h1>418 I'm a teapot</h1>"
@@ -100,6 +118,71 @@ class TestInfoExtractor(unittest.TestCase):
         self.assertRaises(RegexNotFoundError, ie._html_search_meta, 'z', html, None, fatal=True)
         self.assertRaises(RegexNotFoundError, ie._html_search_meta, ('z', 'x'), html, None, fatal=True)
 
+    def test_search_nextjs_data(self):
+        html = '''
+<!DOCTYPE html>
+<html>
+<head>
+  <meta http-equiv="content-type" content=
+  "text/html; charset=utf-8">
+  <meta name="viewport" content="width=device-width">
+  <title>Test _search_nextjs_data()</title>
+</head>
+<body>
+  <div id="__next">
+    <div style="background-color:#17171E" class="FU" dir="ltr">
+      <div class="sc-93de261d-0 dyzzYE">
+        <div>
+          <header class="HD"></header>
+          <main class="MN">
+            <div style="height:0" class="HT0">
+              <div style="width:NaN%" data-testid=
+              "stream-container" class="WDN"></div>
+            </div>
+          </main>
+        </div>
+        <footer class="sc-6e5faf91-0 dEGaHS"></footer>
+      </div>
+    </div>
+  </div>
+  <script id="__NEXT_DATA__" type="application/json">
+  {"props":{"pageProps":{"video":{"id":"testid"}}}}
+  </script>
+</body>
+</html>
+'''
+        search = self.ie._search_nextjs_data(html, 'testID')
+        self.assertEqual(search['props']['pageProps']['video']['id'], 'testid')
+
+    def test_search_nuxt_data(self):
+        html = '''
+<!DOCTYPE html>
+<html>
+<head>
+  <meta http-equiv="content-type" content=
+  "text/html; charset=utf-8">
+  <title>Nuxt.js Test Page</title>
+  <meta name="viewport" content=
+  "width=device-width, initial-scale=1">
+  <meta data-hid="robots" name="robots" content="all">
+</head>
+<body class="BD">
+  <div id="__layout">
+    <h1 class="H1">Example heading</h1>
+    <div class="IN">
+      <p>Decoy text</p>
+    </div>
+  </div>
+  <script>
+  window.__NUXT__=(function(a,b,c,d,e,f,g,h){return {decoy:" default",data:[{track:{id:f,title:g}}]}}(null,null,"c",null,null,"testid","Nuxt.js title",null));
+  </script>
+  <script src="/_nuxt/a12345b.js" defer="defer"></script>
+</body>
+</html>
+'''
+        search = self.ie._search_nuxt_data(html, 'testID')
+        self.assertEqual(search['track']['id'], 'testid')
+
     def test_search_json_ld_realworld(self):
         # https://github.com/ytdl-org/youtube-dl/issues/23306
         expect_dict(
@@ -348,6 +431,24 @@ class TestInfoExtractor(unittest.TestCase):
                 }],
             })
 
+        # from https://0000.studio/
+        # with type attribute but without extension in URL
+        expect_dict(
+            self,
+            self.ie._parse_html5_media_entries(
+                'https://0000.studio',
+                r'''
+                <video src="https://d1ggyt9m8pwf3g.cloudfront.net/protected/ap-northeast-1:1864af40-28d5-492b-b739-b32314b1a527/archive/clip/838db6a7-8973-4cd6-840d-8517e4093c92"
+                    controls="controls" type="video/mp4" preload="metadata" autoplay="autoplay" playsinline class="object-contain">
+                </video>
+                ''', None)[0],
+            {
+                'formats': [{
+                    'url': 'https://d1ggyt9m8pwf3g.cloudfront.net/protected/ap-northeast-1:1864af40-28d5-492b-b739-b32314b1a527/archive/clip/838db6a7-8973-4cd6-840d-8517e4093c92',
+                    'ext': 'mp4',
+                }],
+            })
+
     def test_extract_jwplayer_data_realworld(self):
         # from http://www.suffolk.edu/sjc/
         expect_dict(
@@ -801,8 +902,8 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for m3u8_file, m3u8_url, expected_formats in _TEST_CASES:
-            with io.open('./test/testdata/m3u8/%s.m3u8' % m3u8_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/m3u8/%s.m3u8' % m3u8_file,
+                      mode='r', encoding='utf-8') as f:
                 formats = self.ie._parse_m3u8_formats(
                     f.read(), m3u8_url, ext='mp4')
                 self.ie._sort_formats(formats)
@@ -1026,8 +1127,8 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for mpd_file, mpd_url, mpd_base_url, expected_formats in _TEST_CASES:
-            with io.open('./test/testdata/mpd/%s.mpd' % mpd_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/mpd/%s.mpd' % mpd_file,
+                      mode='r', encoding='utf-8') as f:
                 formats = self.ie._parse_mpd_formats(
                     compat_etree_fromstring(f.read().encode('utf-8')),
                     mpd_base_url=mpd_base_url, mpd_url=mpd_url)
@@ -1053,8 +1154,8 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for f4m_file, f4m_url, expected_formats in _TEST_CASES:
-            with io.open('./test/testdata/f4m/%s.f4m' % f4m_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/f4m/%s.f4m' % f4m_file,
+                      mode='r', encoding='utf-8') as f:
                 formats = self.ie._parse_f4m_formats(
                     compat_etree_fromstring(f.read().encode('utf-8')),
                     f4m_url, None)
@@ -1101,8 +1202,8 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
         ]
 
         for xspf_file, xspf_url, expected_entries in _TEST_CASES:
-            with io.open('./test/testdata/xspf/%s.xspf' % xspf_file,
-                         mode='r', encoding='utf-8') as f:
+            with open('./test/testdata/xspf/%s.xspf' % xspf_file,
+                      mode='r', encoding='utf-8') as f:
                 entries = self.ie._parse_xspf(
                     compat_etree_fromstring(f.read().encode('utf-8')),
                     xspf_file, xspf_url=xspf_url, xspf_base_url=xspf_url)

test/test_YoutubeDL.py

@@ -10,14 +10,31 @@ import unittest
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 import copy
+import json
 
-from test.helper import FakeYDL, assertRegexpMatches
+from test.helper import (
+    FakeYDL,
+    assertRegexpMatches,
+    try_rm,
+)
 from youtube_dl import YoutubeDL
-from youtube_dl.compat import compat_str, compat_urllib_error
+from youtube_dl.compat import (
+    compat_http_cookiejar_Cookie,
+    compat_http_cookies_SimpleCookie,
+    compat_kwargs,
+    compat_open as open,
+    compat_str,
+    compat_urllib_error,
+)
+
 from youtube_dl.extractor import YoutubeIE
 from youtube_dl.extractor.common import InfoExtractor
 from youtube_dl.postprocessor.common import PostProcessor
-from youtube_dl.utils import ExtractorError, match_filter_func
+from youtube_dl.utils import (
+    ExtractorError,
+    match_filter_func,
+    traverse_obj,
+)
 
 TEST_URL = 'http://localhost/sample.mp4'
 
@@ -29,11 +46,14 @@ class YDL(FakeYDL):
         self.msgs = []
 
     def process_info(self, info_dict):
-        self.downloaded_info_dicts.append(info_dict)
+        self.downloaded_info_dicts.append(info_dict.copy())
 
     def to_screen(self, msg):
         self.msgs.append(msg)
 
+    def dl(self, *args, **kwargs):
+        assert False, 'Downloader must not be invoked for test_YoutubeDL'
+
 
 def _make_result(formats, **kwargs):
     res = {
@@ -42,8 +62,9 @@ def _make_result(formats, **kwargs):
         'title': 'testttitle',
         'extractor': 'testex',
         'extractor_key': 'TestEx',
+        'webpage_url': 'http://example.com/watch?v=shenanigans',
     }
-    res.update(**kwargs)
+    res.update(**compat_kwargs(kwargs))
     return res
 
 
@@ -681,12 +702,12 @@ class TestYoutubeDL(unittest.TestCase):
 
         class SimplePP(PostProcessor):
             def run(self, info):
-                with open(audiofile, 'wt') as f:
+                with open(audiofile, 'w') as f:
                     f.write('EXAMPLE')
                 return [info['filepath']], info
 
         def run_pp(params, PP):
-            with open(filename, 'wt') as f:
+            with open(filename, 'w') as f:
                 f.write('EXAMPLE')
             ydl = YoutubeDL(params)
             ydl.add_post_processor(PP())
@@ -705,7 +726,7 @@ class TestYoutubeDL(unittest.TestCase):
 
         class ModifierPP(PostProcessor):
             def run(self, info):
-                with open(info['filepath'], 'wt') as f:
+                with open(info['filepath'], 'w') as f:
                     f.write('MODIFIED')
                 return [], info
 
@@ -930,17 +951,11 @@ class TestYoutubeDL(unittest.TestCase):
     # Test case for https://github.com/ytdl-org/youtube-dl/issues/27064
     def test_ignoreerrors_for_playlist_with_url_transparent_iterable_entries(self):
 
-        class _YDL(YDL):
-            def __init__(self, *args, **kwargs):
-                super(_YDL, self).__init__(*args, **kwargs)
-
-            def trouble(self, s, tb=None):
-                pass
-
-        ydl = _YDL({
+        ydl = YDL({
             'format': 'extra',
             'ignoreerrors': True,
         })
+        ydl.trouble = lambda *_, **__: None
 
         class VideoIE(InfoExtractor):
             _VALID_URL = r'video:(?P<id>\d+)'
@@ -1017,5 +1032,160 @@ class TestYoutubeDL(unittest.TestCase):
         self.assertEqual(out_info['release_date'], '20210930')
 
 
+class TestYoutubeDLCookies(unittest.TestCase):
+
+    @staticmethod
+    def encode_cookie(cookie):
+        if not isinstance(cookie, dict):
+            cookie = vars(cookie)
+        for name, value in cookie.items():
+            yield name, compat_str(value)
+
+    @classmethod
+    def comparable_cookies(cls, cookies):
+        # Work around cookiejar cookies not being unicode strings
+        return sorted(map(tuple, map(sorted, map(cls.encode_cookie, cookies))))
+
+    def assertSameCookies(self, c1, c2, msg=None):
+        return self.assertEqual(
+            *map(self.comparable_cookies, (c1, c2)),
+            msg=msg)
+
+    def assertSameCookieStrings(self, c1, c2, msg=None):
+        return self.assertSameCookies(
+            *map(lambda c: compat_http_cookies_SimpleCookie(c).values(), (c1, c2)),
+            msg=msg)
+
+    def test_header_cookies(self):
+
+        ydl = FakeYDL()
+        ydl.report_warning = lambda *_, **__: None
+
+        def cookie(name, value, version=None, domain='', path='', secure=False, expires=None):
+            return compat_http_cookiejar_Cookie(
+                version or 0, name, value, None, False,
+                domain, bool(domain), bool(domain), path, bool(path),
+                secure, expires, False, None, None, rest={})
+
+        test_url, test_domain = (t % ('yt.dl',) for t in ('https://%s/test', '.%s'))
+
+        def test(encoded_cookies, cookies, headers=False, round_trip=None, error_re=None):
+            def _test():
+                ydl.cookiejar.clear()
+                ydl._load_cookies(encoded_cookies, autoscope=headers)
+                if headers:
+                    ydl._apply_header_cookies(test_url)
+                data = {'url': test_url}
+                ydl._calc_headers(data)
+                self.assertSameCookies(
+                    cookies, ydl.cookiejar,
+                    'Extracted cookiejar.Cookie is not the same')
+                if not headers:
+                    self.assertSameCookieStrings(
+                        data.get('cookies'), round_trip or encoded_cookies,
+                        msg='Cookie is not the same as round trip')
+                ydl.__dict__['_YoutubeDL__header_cookies'] = []
+
+            try:
+                _test()
+            except AssertionError:
+                raise
+            except Exception as e:
+                if not error_re:
+                    raise
+                assertRegexpMatches(self, e.args[0], error_re.join(('.*',) * 2))
+
+        test('test=value; Domain=' + test_domain, [cookie('test', 'value', domain=test_domain)])
+        test('test=value', [cookie('test', 'value')], error_re='Unscoped cookies are not allowed')
+        test('cookie1=value1; Domain={0}; Path=/test; cookie2=value2; Domain={0}; Path=/'.format(test_domain), [
+            cookie('cookie1', 'value1', domain=test_domain, path='/test'),
+            cookie('cookie2', 'value2', domain=test_domain, path='/')])
+        cookie_kw = compat_kwargs(
+            {'domain': test_domain, 'path': '/test', 'secure': True, 'expires': '9999999999', })
+        test('test=value; Domain={domain}; Path={path}; Secure; Expires={expires}'.format(**cookie_kw), [
+            cookie('test', 'value', **cookie_kw)])
+        test('test="value; "; path=/test; domain=' + test_domain, [
+            cookie('test', 'value; ', domain=test_domain, path='/test')],
+            round_trip='test="value\\073 "; Domain={0}; Path=/test'.format(test_domain))
+        test('name=; Domain=' + test_domain, [cookie('name', '', domain=test_domain)],
+             round_trip='name=""; Domain=' + test_domain)
+        test('test=value', [cookie('test', 'value', domain=test_domain)], headers=True)
+        test('cookie1=value; Domain={0}; cookie2=value'.format(test_domain), [],
+             headers=True, error_re='Invalid syntax')
+        ydl.report_warning = ydl.report_error
+        test('test=value', [], headers=True, error_re='Passing cookies as a header is a potential security risk')
+
+    def test_infojson_cookies(self):
+        TEST_FILE = 'test_infojson_cookies.info.json'
+        TEST_URL = 'https://example.com/example.mp4'
+        COOKIES = 'a=b; Domain=.example.com; c=d; Domain=.example.com'
+        COOKIE_HEADER = {'Cookie': 'a=b; c=d'}
+
+        ydl = FakeYDL()
+        ydl.process_info = lambda x: ydl._write_info_json('test', x, TEST_FILE)
+
+        def make_info(info_header_cookies=False, fmts_header_cookies=False, cookies_field=False):
+            fmt = {'url': TEST_URL}
+            if fmts_header_cookies:
+                fmt['http_headers'] = COOKIE_HEADER
+            if cookies_field:
+                fmt['cookies'] = COOKIES
+            return _make_result([fmt], http_headers=COOKIE_HEADER if info_header_cookies else None)
+
+        def test(initial_info, note):
+
+            def failure_msg(why):
+                return ' when '.join((why, note))
+
+            result = {}
+            result['processed'] = ydl.process_ie_result(initial_info)
+            self.assertTrue(ydl.cookiejar.get_cookies_for_url(TEST_URL),
+                            msg=failure_msg('No cookies set in cookiejar after initial process'))
+            ydl.cookiejar.clear()
+            with open(TEST_FILE) as infojson:
+                result['loaded'] = ydl.sanitize_info(json.load(infojson), True)
+            result['final'] = ydl.process_ie_result(result['loaded'].copy(), download=False)
+            self.assertTrue(ydl.cookiejar.get_cookies_for_url(TEST_URL),
+                            msg=failure_msg('No cookies set in cookiejar after final process'))
+            ydl.cookiejar.clear()
+            for key in ('processed', 'loaded', 'final'):
+                info = result[key]
+                self.assertIsNone(
+                    traverse_obj(info, ((None, ('formats', 0)), 'http_headers', 'Cookie'), casesense=False, get_all=False),
+                    msg=failure_msg('Cookie header not removed in {0} result'.format(key)))
+                self.assertSameCookieStrings(
+                    traverse_obj(info, ((None, ('formats', 0)), 'cookies'), get_all=False), COOKIES,
+                    msg=failure_msg('No cookies field found in {0} result'.format(key)))
+
+        test({'url': TEST_URL, 'http_headers': COOKIE_HEADER, 'id': '1', 'title': 'x'}, 'no formats field')
+        test(make_info(info_header_cookies=True), 'info_dict header cokies')
+        test(make_info(fmts_header_cookies=True), 'format header cookies')
+        test(make_info(info_header_cookies=True, fmts_header_cookies=True), 'info_dict and format header cookies')
+        test(make_info(info_header_cookies=True, fmts_header_cookies=True, cookies_field=True), 'all cookies fields')
+        test(make_info(cookies_field=True), 'cookies format field')
+        test({'url': TEST_URL, 'cookies': COOKIES, 'id': '1', 'title': 'x'}, 'info_dict cookies field only')
+
+        try_rm(TEST_FILE)
+
+    def test_add_headers_cookie(self):
+        def check_for_cookie_header(result):
+            return traverse_obj(result, ((None, ('formats', 0)), 'http_headers', 'Cookie'), casesense=False, get_all=False)
+
+        ydl = FakeYDL({'http_headers': {'Cookie': 'a=b'}})
+        ydl._apply_header_cookies(_make_result([])['webpage_url'])  # Scope to input webpage URL: .example.com
+
+        fmt = {'url': 'https://example.com/video.mp4'}
+        result = ydl.process_ie_result(_make_result([fmt]), download=False)
+        self.assertIsNone(check_for_cookie_header(result), msg='http_headers cookies in result info_dict')
+        self.assertEqual(result.get('cookies'), 'a=b; Domain=.example.com', msg='No cookies were set in cookies field')
+        self.assertIn('a=b', ydl.cookiejar.get_cookie_header(fmt['url']), msg='No cookies were set in cookiejar')
+
+        fmt = {'url': 'https://wrong.com/video.mp4'}
+        result = ydl.process_ie_result(_make_result([fmt]), download=False)
+        self.assertIsNone(check_for_cookie_header(result), msg='http_headers cookies for wrong domain')
+        self.assertFalse(result.get('cookies'), msg='Cookies set in cookies field for wrong domain')
+        self.assertFalse(ydl.cookiejar.get_cookie_header(fmt['url']), msg='Cookies set in cookiejar for wrong domain')
+
+
 if __name__ == '__main__':
     unittest.main()

test/test_YoutubeDLCookieJar.py

@@ -46,6 +46,20 @@ class TestYoutubeDLCookieJar(unittest.TestCase):
         # will be ignored
         self.assertFalse(cookiejar._cookies)
 
+    def test_get_cookie_header(self):
+        cookiejar = YoutubeDLCookieJar('./test/testdata/cookies/httponly_cookies.txt')
+        cookiejar.load(ignore_discard=True, ignore_expires=True)
+        header = cookiejar.get_cookie_header('https://www.foobar.foobar')
+        self.assertIn('HTTPONLY_COOKIE', header)
+
+    def test_get_cookies_for_url(self):
+        cookiejar = YoutubeDLCookieJar('./test/testdata/cookies/session_cookies.txt')
+        cookiejar.load(ignore_discard=True, ignore_expires=True)
+        cookies = cookiejar.get_cookies_for_url('https://www.foobar.foobar/')
+        self.assertEqual(len(cookies), 2)
+        cookies = cookiejar.get_cookies_for_url('https://foobar.foobar/')
+        self.assertFalse(cookies)
+
 
 if __name__ == '__main__':
     unittest.main()

test/test_download.py

@@ -20,15 +20,15 @@ from test.helper import (
 
 
 import hashlib
-import io
 import json
 import socket
 
 import youtube_dl.YoutubeDL
 from youtube_dl.compat import (
     compat_http_client,
-    compat_urllib_error,
     compat_HTTPError,
+    compat_open as open,
+    compat_urllib_error,
 )
 from youtube_dl.utils import (
     DownloadError,
@@ -245,7 +245,7 @@ def generator(test_case, tname):
                 self.assertTrue(
                     os.path.exists(info_json_fn),
                     'Missing info file %s' % info_json_fn)
-                with io.open(info_json_fn, encoding='utf-8') as infof:
+                with open(info_json_fn, encoding='utf-8') as infof:
                     info_dict = json.load(infof)
                 expect_info_dict(self, info_dict, tc.get('info_dict', {}))
         finally:

test/test_downloader_external.py

@@ -12,20 +12,65 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 from test.helper import (
     FakeLogger,
+    FakeYDL,
     http_server_port,
     try_rm,
 )
 from youtube_dl import YoutubeDL
-from youtube_dl.compat import compat_http_server
-from youtube_dl.utils import encodeFilename
-from youtube_dl.downloader.external import Aria2pFD
+from youtube_dl.compat import (
+    compat_http_cookiejar_Cookie,
+    compat_http_server,
+    compat_kwargs,
+)
+from youtube_dl.utils import (
+    encodeFilename,
+    join_nonempty,
+)
+from youtube_dl.downloader.external import (
+    Aria2cFD,
+    Aria2pFD,
+    AxelFD,
+    CurlFD,
+    FFmpegFD,
+    HttpieFD,
+    WgetFD,
+)
 import threading
 
-TEST_DIR = os.path.dirname(os.path.abspath(__file__))
-
-
 TEST_SIZE = 10 * 1024
 
+TEST_COOKIE = {
+    'version': 0,
+    'name': 'test',
+    'value': 'ytdlp',
+    'port': None,
+    'port_specified': False,
+    'domain': '.example.com',
+    'domain_specified': True,
+    'domain_initial_dot': False,
+    'path': '/',
+    'path_specified': True,
+    'secure': False,
+    'expires': None,
+    'discard': False,
+    'comment': None,
+    'comment_url': None,
+    'rest': {},
+}
+
+TEST_COOKIE_VALUE = join_nonempty('name', 'value', delim='=', from_dict=TEST_COOKIE)
+
+TEST_INFO = {'url': 'http://www.example.com/'}
+
+
+def cookiejar_Cookie(**cookie_args):
+    return compat_http_cookiejar_Cookie(**compat_kwargs(cookie_args))
+
+
+def ifExternalFDAvailable(externalFD):
+    return unittest.skipUnless(externalFD.available(),
+                               externalFD.get_basename() + ' not found')
+
 
 class HTTPTestRequestHandler(compat_http_server.BaseHTTPRequestHandler):
     def log_message(self, format, *args):
@@ -70,7 +115,7 @@ class HTTPTestRequestHandler(compat_http_server.BaseHTTPRequestHandler):
             assert False, 'unrecognised server path'
 
 
-@unittest.skipUnless(Aria2pFD.available(), 'aria2p module not found')
+@ifExternalFDAvailable(Aria2pFD)
 class TestAria2pFD(unittest.TestCase):
     def setUp(self):
         self.httpd = compat_http_server.HTTPServer(
@@ -111,5 +156,103 @@ class TestAria2pFD(unittest.TestCase):
         })
 
 
+@ifExternalFDAvailable(HttpieFD)
+class TestHttpieFD(unittest.TestCase):
+    def test_make_cmd(self):
+        with FakeYDL() as ydl:
+            downloader = HttpieFD(ydl, {})
+            self.assertEqual(
+                downloader._make_cmd('test', TEST_INFO),
+                ['http', '--download', '--output', 'test', 'http://www.example.com/'])
+
+            # Test cookie header is added
+            ydl.cookiejar.set_cookie(cookiejar_Cookie(**TEST_COOKIE))
+            self.assertEqual(
+                downloader._make_cmd('test', TEST_INFO),
+                ['http', '--download', '--output', 'test',
+                 'http://www.example.com/', 'Cookie:' + TEST_COOKIE_VALUE])
+
+
+@ifExternalFDAvailable(AxelFD)
+class TestAxelFD(unittest.TestCase):
+    def test_make_cmd(self):
+        with FakeYDL() as ydl:
+            downloader = AxelFD(ydl, {})
+            self.assertEqual(
+                downloader._make_cmd('test', TEST_INFO),
+                ['axel', '-o', 'test', '--', 'http://www.example.com/'])
+
+            # Test cookie header is added
+            ydl.cookiejar.set_cookie(cookiejar_Cookie(**TEST_COOKIE))
+            self.assertEqual(
+                downloader._make_cmd('test', TEST_INFO),
+                ['axel', '-o', 'test', '-H', 'Cookie: ' + TEST_COOKIE_VALUE,
+                 '--max-redirect=0', '--', 'http://www.example.com/'])
+
+
+@ifExternalFDAvailable(WgetFD)
+class TestWgetFD(unittest.TestCase):
+    def test_make_cmd(self):
+        with FakeYDL() as ydl:
+            downloader = WgetFD(ydl, {})
+            self.assertNotIn('--load-cookies', downloader._make_cmd('test', TEST_INFO))
+            # Test cookiejar tempfile arg is added
+            ydl.cookiejar.set_cookie(cookiejar_Cookie(**TEST_COOKIE))
+            self.assertIn('--load-cookies', downloader._make_cmd('test', TEST_INFO))
+
+
+@ifExternalFDAvailable(CurlFD)
+class TestCurlFD(unittest.TestCase):
+    def test_make_cmd(self):
+        with FakeYDL() as ydl:
+            downloader = CurlFD(ydl, {})
+            self.assertNotIn('--cookie', downloader._make_cmd('test', TEST_INFO))
+            # Test cookie header is added
+            ydl.cookiejar.set_cookie(cookiejar_Cookie(**TEST_COOKIE))
+            self.assertIn('--cookie', downloader._make_cmd('test', TEST_INFO))
+            self.assertIn(TEST_COOKIE_VALUE, downloader._make_cmd('test', TEST_INFO))
+
+
+@ifExternalFDAvailable(Aria2cFD)
+class TestAria2cFD(unittest.TestCase):
+    def test_make_cmd(self):
+        with FakeYDL() as ydl:
+            downloader = Aria2cFD(ydl, {})
+            downloader._make_cmd('test', TEST_INFO)
+            self.assertFalse(hasattr(downloader, '_cookies_tempfile'))
+
+            # Test cookiejar tempfile arg is added
+            ydl.cookiejar.set_cookie(cookiejar_Cookie(**TEST_COOKIE))
+            cmd = downloader._make_cmd('test', TEST_INFO)
+            self.assertIn('--load-cookies=%s' % downloader._cookies_tempfile, cmd)
+
+
+@ifExternalFDAvailable(FFmpegFD)
+class TestFFmpegFD(unittest.TestCase):
+    _args = []
+
+    def _test_cmd(self, args):
+        self._args = args
+
+    def test_make_cmd(self):
+        with FakeYDL() as ydl:
+            downloader = FFmpegFD(ydl, {})
+            downloader._debug_cmd = self._test_cmd
+            info_dict = TEST_INFO.copy()
+            info_dict['ext'] = 'mp4'
+
+            downloader._call_downloader('test', info_dict)
+            self.assertEqual(self._args, [
+                'ffmpeg', '-y', '-i', 'http://www.example.com/',
+                '-c', 'copy', '-f', 'mp4', 'file:test'])
+
+            # Test cookies arg is added
+            ydl.cookiejar.set_cookie(cookiejar_Cookie(**TEST_COOKIE))
+            downloader._call_downloader('test', info_dict)
+            self.assertEqual(self._args, [
+                'ffmpeg', '-y', '-cookies', TEST_COOKIE_VALUE + '; path=/; domain=.example.com;\r\n',
+                '-i', 'http://www.example.com/', '-c', 'copy', '-f', 'mp4', 'file:test'])
+
+
 if __name__ == '__main__':
     unittest.main()

test/test_downloader_http.py

@@ -88,7 +88,7 @@ class TestHttpFD(unittest.TestCase):
         self.assertTrue(downloader.real_download(filename, {
             'url': 'http://127.0.0.1:%d/%s' % (self.port, ep),
         }))
-        self.assertEqual(os.path.getsize(encodeFilename(filename)), TEST_SIZE)
+        self.assertEqual(os.path.getsize(encodeFilename(filename)), TEST_SIZE, ep)
         try_rm(encodeFilename(filename))
 
     def download_all(self, params):

test/test_execution.py

@@ -8,47 +8,53 @@ import unittest
 import sys
 import os
 import subprocess
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
-from youtube_dl.utils import encodeArgument
 
 rootDir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
+sys.path.insert(0, rootDir)
 
-try:
-    _DEV_NULL = subprocess.DEVNULL
-except AttributeError:
-    _DEV_NULL = open(os.devnull, 'wb')
+from youtube_dl.compat import compat_register_utf8, compat_subprocess_get_DEVNULL
+from youtube_dl.utils import encodeArgument
+
+compat_register_utf8()
+
+
+_DEV_NULL = compat_subprocess_get_DEVNULL()
 
 
 class TestExecution(unittest.TestCase):
+    def setUp(self):
+        self.module = 'youtube_dl'
+        if sys.version_info < (2, 7):
+            self.module += '.__main__'
+
     def test_import(self):
         subprocess.check_call([sys.executable, '-c', 'import youtube_dl'], cwd=rootDir)
 
     def test_module_exec(self):
-        if sys.version_info >= (2, 7):  # Python 2.6 doesn't support package execution
-            subprocess.check_call([sys.executable, '-m', 'youtube_dl', '--version'], cwd=rootDir, stdout=_DEV_NULL)
+        subprocess.check_call([sys.executable, '-m', self.module, '--version'], cwd=rootDir, stdout=_DEV_NULL)
 
     def test_main_exec(self):
-        subprocess.check_call([sys.executable, 'youtube_dl/__main__.py', '--version'], cwd=rootDir, stdout=_DEV_NULL)
+        subprocess.check_call([sys.executable, os.path.normpath('youtube_dl/__main__.py'), '--version'], cwd=rootDir, stdout=_DEV_NULL)
 
     def test_cmdline_umlauts(self):
+        os.environ['PYTHONIOENCODING'] = 'utf-8'
         p = subprocess.Popen(
-            [sys.executable, 'youtube_dl/__main__.py', encodeArgument('ä'), '--version'],
+            [sys.executable, '-m', self.module, encodeArgument('ä'), '--version'],
             cwd=rootDir, stdout=_DEV_NULL, stderr=subprocess.PIPE)
         _, stderr = p.communicate()
         self.assertFalse(stderr)
 
     def test_lazy_extractors(self):
-        lazy_extractors = 'youtube_dl/extractor/lazy_extractors.py'
+        lazy_extractors = os.path.normpath('youtube_dl/extractor/lazy_extractors.py')
         try:
-            subprocess.check_call([sys.executable, 'devscripts/make_lazy_extractors.py', lazy_extractors], cwd=rootDir, stdout=_DEV_NULL)
-            subprocess.check_call([sys.executable, 'test/test_all_urls.py'], cwd=rootDir, stdout=_DEV_NULL)
+            subprocess.check_call([sys.executable, os.path.normpath('devscripts/make_lazy_extractors.py'), lazy_extractors], cwd=rootDir, stdout=_DEV_NULL)
+            subprocess.check_call([sys.executable, os.path.normpath('test/test_all_urls.py')], cwd=rootDir, stdout=_DEV_NULL)
         finally:
-            for x in ['', 'c'] if sys.version_info[0] < 3 else ['']:
+            for x in ('', 'c') if sys.version_info[0] < 3 else ('',):
                 try:
                     os.remove(lazy_extractors + x)
-                except (IOError, OSError):
+                except OSError:
                     pass
 
 

test/test_http.py

@@ -8,33 +8,163 @@ import sys
 import unittest
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
+import contextlib
+import gzip
+import io
+import ssl
+import tempfile
+import threading
+import zlib
+
+# avoid deprecated alias assertRaisesRegexp
+if hasattr(unittest.TestCase, 'assertRaisesRegex'):
+    unittest.TestCase.assertRaisesRegexp = unittest.TestCase.assertRaisesRegex
+
+try:
+    import brotli
+except ImportError:
+    brotli = None
+try:
+    from urllib.request import pathname2url
+except ImportError:
+    from urllib import pathname2url
+
+from youtube_dl.compat import (
+    compat_http_cookiejar_Cookie,
+    compat_http_server,
+    compat_str as str,
+    compat_urllib_error,
+    compat_urllib_HTTPError,
+    compat_urllib_parse,
+    compat_urllib_request,
+)
+
+from youtube_dl.utils import (
+    sanitized_Request,
+    update_Request,
+    urlencode_postdata,
+)
+
 from test.helper import (
+    expectedFailureIf,
+    FakeYDL,
     FakeLogger,
     http_server_port,
 )
 from youtube_dl import YoutubeDL
-from youtube_dl.compat import compat_http_server, compat_urllib_request
-import ssl
-import threading
 
 TEST_DIR = os.path.dirname(os.path.abspath(__file__))
 
 
 class HTTPTestRequestHandler(compat_http_server.BaseHTTPRequestHandler):
+    protocol_version = 'HTTP/1.1'
+
+    # work-around old/new -style class inheritance
+    def super(self, meth_name, *args, **kwargs):
+        from types import MethodType
+        try:
+            super()
+            fn = lambda s, m, *a, **k: getattr(super(), m)(*a, **k)
+        except TypeError:
+            fn = lambda s, m, *a, **k: getattr(compat_http_server.BaseHTTPRequestHandler, m)(s, *a, **k)
+        self.super = MethodType(fn, self)
+        return self.super(meth_name, *args, **kwargs)
+
     def log_message(self, format, *args):
         pass
 
+    def _headers(self):
+        payload = str(self.headers).encode('utf-8')
+        self.send_response(200)
+        self.send_header('Content-Type', 'application/json')
+        self.send_header('Content-Length', str(len(payload)))
+        self.end_headers()
+        self.wfile.write(payload)
+
+    def _redirect(self):
+        self.send_response(int(self.path[len('/redirect_'):]))
+        self.send_header('Location', '/method')
+        self.send_header('Content-Length', '0')
+        self.end_headers()
+
+    def _method(self, method, payload=None):
+        self.send_response(200)
+        self.send_header('Content-Length', str(len(payload or '')))
+        self.send_header('Method', method)
+        self.end_headers()
+        if payload:
+            self.wfile.write(payload)
+
+    def _status(self, status):
+        payload = '<html>{0} NOT FOUND</html>'.format(status).encode('utf-8')
+        self.send_response(int(status))
+        self.send_header('Content-Type', 'text/html; charset=utf-8')
+        self.send_header('Content-Length', str(len(payload)))
+        self.end_headers()
+        self.wfile.write(payload)
+
+    def _read_data(self):
+        if 'Content-Length' in self.headers:
+            return self.rfile.read(int(self.headers['Content-Length']))
+
+    def _test_url(self, path, host='127.0.0.1', scheme='http', port=None):
+        return '{0}://{1}:{2}/{3}'.format(
+            scheme, host,
+            port if port is not None
+            else http_server_port(self.server), path)
+
+    def do_POST(self):
+        data = self._read_data()
+        if self.path.startswith('/redirect_'):
+            self._redirect()
+        elif self.path.startswith('/method'):
+            self._method('POST', data)
+        elif self.path.startswith('/headers'):
+            self._headers()
+        else:
+            self._status(404)
+
+    def do_HEAD(self):
+        if self.path.startswith('/redirect_'):
+            self._redirect()
+        elif self.path.startswith('/method'):
+            self._method('HEAD')
+        else:
+            self._status(404)
+
+    def do_PUT(self):
+        data = self._read_data()
+        if self.path.startswith('/redirect_'):
+            self._redirect()
+        elif self.path.startswith('/method'):
+            self._method('PUT', data)
+        else:
+            self._status(404)
+
     def do_GET(self):
+
+        def respond(payload=b'<html><video src="/vid.mp4" /></html>',
+                    payload_type='text/html; charset=utf-8',
+                    payload_encoding=None,
+                    resp_code=200):
+            self.send_response(resp_code)
+            self.send_header('Content-Type', payload_type)
+            if payload_encoding:
+                self.send_header('Content-Encoding', payload_encoding)
+            self.send_header('Content-Length', str(len(payload)))  # required for persistent connections
+            self.end_headers()
+            self.wfile.write(payload)
+
+        def gzip_compress(p):
+            buf = io.BytesIO()
+            with contextlib.closing(gzip.GzipFile(fileobj=buf, mode='wb')) as f:
+                f.write(p)
+            return buf.getvalue()
+
         if self.path == '/video.html':
-            self.send_response(200)
-            self.send_header('Content-Type', 'text/html; charset=utf-8')
-            self.end_headers()
-            self.wfile.write(b'<html><video src="/vid.mp4" /></html>')
+            respond()
         elif self.path == '/vid.mp4':
-            self.send_response(200)
-            self.send_header('Content-Type', 'video/mp4')
-            self.end_headers()
-            self.wfile.write(b'\x00\x00\x00\x00\x20\x66\x74[video]')
+            respond(b'\x00\x00\x00\x00\x20\x66\x74[video]', 'video/mp4')
         elif self.path == '/302':
             if sys.version_info[0] == 3:
                 # XXX: Python 3 http server does not allow non-ASCII header values
@@ -42,60 +172,336 @@ class HTTPTestRequestHandler(compat_http_server.BaseHTTPRequestHandler):
                 self.end_headers()
                 return
 
-            new_url = 'http://127.0.0.1:%d/中文.html' % http_server_port(self.server)
+            new_url = self._test_url('中文.html')
             self.send_response(302)
             self.send_header(b'Location', new_url.encode('utf-8'))
             self.end_headers()
         elif self.path == '/%E4%B8%AD%E6%96%87.html':
-            self.send_response(200)
-            self.send_header('Content-Type', 'text/html; charset=utf-8')
+            respond()
+        elif self.path == '/%c7%9f':
+            respond()
+        elif self.path == '/redirect_dotsegments':
+            self.send_response(301)
+            # redirect to /headers but with dot segments before
+            self.send_header('Location', '/a/b/./../../headers')
+            self.send_header('Content-Length', '0')
             self.end_headers()
-            self.wfile.write(b'<html><video src="/vid.mp4" /></html>')
+        elif self.path.startswith('/redirect_'):
+            self._redirect()
+        elif self.path.startswith('/method'):
+            self._method('GET')
+        elif self.path.startswith('/headers'):
+            self._headers()
+        elif self.path.startswith('/308-to-headers'):
+            self.send_response(308)
+            self.send_header('Location', '/headers')
+            self.send_header('Content-Length', '0')
+            self.end_headers()
+        elif self.path == '/trailing_garbage':
+            payload = b'<html><video src="/vid.mp4" /></html>'
+            compressed = gzip_compress(payload) + b'trailing garbage'
+            respond(compressed, payload_encoding='gzip')
+        elif self.path == '/302-non-ascii-redirect':
+            new_url = self._test_url('中文.html')
+            # actually respond with permanent redirect
+            self.send_response(301)
+            self.send_header('Location', new_url)
+            self.send_header('Content-Length', '0')
+            self.end_headers()
+        elif self.path == '/content-encoding':
+            encodings = self.headers.get('ytdl-encoding', '')
+            payload = b'<html><video src="/vid.mp4" /></html>'
+            for encoding in filter(None, (e.strip() for e in encodings.split(','))):
+                if encoding == 'br' and brotli:
+                    payload = brotli.compress(payload)
+                elif encoding == 'gzip':
+                    payload = gzip_compress(payload)
+                elif encoding == 'deflate':
+                    payload = zlib.compress(payload)
+                elif encoding == 'unsupported':
+                    payload = b'raw'
+                    break
+                else:
+                    self._status(415)
+                    return
+            respond(payload, payload_encoding=encodings)
+
         else:
-            assert False
+            self._status(404)
+
+    def send_header(self, keyword, value):
+        """
+        Forcibly allow HTTP server to send non percent-encoded non-ASCII characters in headers.
+        This is against what is defined in RFC 3986: but we need to test that we support this
+        since some sites incorrectly do this.
+        """
+        if keyword.lower() == 'connection':
+            return self.super('send_header', keyword, value)
+
+        if not hasattr(self, '_headers_buffer'):
+            self._headers_buffer = []
+
+        self._headers_buffer.append('{0}: {1}\r\n'.format(keyword, value).encode('utf-8'))
+
+    def end_headers(self):
+        if hasattr(self, '_headers_buffer'):
+            self.wfile.write(b''.join(self._headers_buffer))
+            self._headers_buffer = []
+        self.super('end_headers')
 
 
 class TestHTTP(unittest.TestCase):
+    # when does it make sense to check the SSL certificate?
+    _check_cert = (
+        sys.version_info >= (3, 2)
+        or (sys.version_info[0] == 2 and sys.version_info[1:] >= (7, 19)))
+
     def setUp(self):
-        self.httpd = compat_http_server.HTTPServer(
+        # HTTP server
+        self.http_httpd = compat_http_server.HTTPServer(
             ('127.0.0.1', 0), HTTPTestRequestHandler)
-        self.port = http_server_port(self.httpd)
-        self.server_thread = threading.Thread(target=self.httpd.serve_forever)
-        self.server_thread.daemon = True
-        self.server_thread.start()
+        self.http_port = http_server_port(self.http_httpd)
+
+        self.http_server_thread = threading.Thread(target=self.http_httpd.serve_forever)
+        self.http_server_thread.daemon = True
+        self.http_server_thread.start()
+
+        try:
+            from http.server import ThreadingHTTPServer
+        except ImportError:
+            try:
+                from socketserver import ThreadingMixIn
+            except ImportError:
+                from SocketServer import ThreadingMixIn
+
+            class ThreadingHTTPServer(ThreadingMixIn, compat_http_server.HTTPServer):
+                pass
+
+        # HTTPS server
+        certfn = os.path.join(TEST_DIR, 'testcert.pem')
+        self.https_httpd = ThreadingHTTPServer(
+            ('127.0.0.1', 0), HTTPTestRequestHandler)
+        try:
+            sslctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
+            sslctx.verify_mode = ssl.CERT_NONE
+            sslctx.check_hostname = False
+            sslctx.load_cert_chain(certfn, None)
+            self.https_httpd.socket = sslctx.wrap_socket(
+                self.https_httpd.socket, server_side=True)
+        except AttributeError:
+            self.https_httpd.socket = ssl.wrap_socket(
+                self.https_httpd.socket, certfile=certfn, server_side=True)
+
+        self.https_port = http_server_port(self.https_httpd)
+        self.https_server_thread = threading.Thread(target=self.https_httpd.serve_forever)
+        self.https_server_thread.daemon = True
+        self.https_server_thread.start()
+
+    def tearDown(self):
+
+        def closer(svr):
+            def _closer():
+                svr.shutdown()
+                svr.server_close()
+            return _closer
+
+        shutdown_thread = threading.Thread(target=closer(self.http_httpd))
+        shutdown_thread.start()
+        self.http_server_thread.join(2.0)
+
+        shutdown_thread = threading.Thread(target=closer(self.https_httpd))
+        shutdown_thread.start()
+        self.https_server_thread.join(2.0)
+
+    def _test_url(self, path, host='127.0.0.1', scheme='http', port=None):
+        return '{0}://{1}:{2}/{3}'.format(
+            scheme, host,
+            port if port is not None
+            else self.https_port if scheme == 'https'
+            else self.http_port, path)
+
+    @unittest.skipUnless(_check_cert, 'No support for certificate check in SSL')
+    def test_nocheckcertificate(self):
+        with FakeYDL({'logger': FakeLogger()}) as ydl:
+            with self.assertRaises(compat_urllib_error.URLError):
+                ydl.urlopen(sanitized_Request(self._test_url('headers', scheme='https')))
+
+        with FakeYDL({'logger': FakeLogger(), 'nocheckcertificate': True}) as ydl:
+            r = ydl.urlopen(sanitized_Request(self._test_url('headers', scheme='https')))
+            self.assertEqual(r.getcode(), 200)
+            r.close()
+
+    def test_percent_encode(self):
+        with FakeYDL() as ydl:
+            # Unicode characters should be encoded with uppercase percent-encoding
+            res = ydl.urlopen(sanitized_Request(self._test_url('中文.html')))
+            self.assertEqual(res.getcode(), 200)
+            res.close()
+            # don't normalize existing percent encodings
+            res = ydl.urlopen(sanitized_Request(self._test_url('%c7%9f')))
+            self.assertEqual(res.getcode(), 200)
+            res.close()
 
     def test_unicode_path_redirection(self):
-        # XXX: Python 3 http server does not allow non-ASCII header values
-        if sys.version_info[0] == 3:
-            return
+        with FakeYDL() as ydl:
+            r = ydl.urlopen(sanitized_Request(self._test_url('302-non-ascii-redirect')))
+            self.assertEqual(r.url, self._test_url('%E4%B8%AD%E6%96%87.html'))
+            r.close()
 
-        ydl = YoutubeDL({'logger': FakeLogger()})
-        r = ydl.extract_info('http://127.0.0.1:%d/302' % self.port)
-        self.assertEqual(r['entries'][0]['url'], 'http://127.0.0.1:%d/vid.mp4' % self.port)
+    def test_redirect(self):
+        with FakeYDL() as ydl:
+            def do_req(redirect_status, method, check_no_content=False):
+                data = b'testdata' if method in ('POST', 'PUT') else None
+                res = ydl.urlopen(sanitized_Request(
+                    self._test_url('redirect_{0}'.format(redirect_status)),
+                    method=method, data=data))
+                if check_no_content:
+                    self.assertNotIn('Content-Type', res.headers)
+                return res.read().decode('utf-8'), res.headers.get('method', '')
+            # A 303 must either use GET or HEAD for subsequent request
+            self.assertEqual(do_req(303, 'POST'), ('', 'GET'))
+            self.assertEqual(do_req(303, 'HEAD'), ('', 'HEAD'))
 
+            self.assertEqual(do_req(303, 'PUT'), ('', 'GET'))
 
-class TestHTTPS(unittest.TestCase):
-    def setUp(self):
-        certfn = os.path.join(TEST_DIR, 'testcert.pem')
-        self.httpd = compat_http_server.HTTPServer(
-            ('127.0.0.1', 0), HTTPTestRequestHandler)
-        self.httpd.socket = ssl.wrap_socket(
-            self.httpd.socket, certfile=certfn, server_side=True)
-        self.port = http_server_port(self.httpd)
-        self.server_thread = threading.Thread(target=self.httpd.serve_forever)
-        self.server_thread.daemon = True
-        self.server_thread.start()
+            # 301 and 302 turn POST only into a GET, with no Content-Type
+            self.assertEqual(do_req(301, 'POST', True), ('', 'GET'))
+            self.assertEqual(do_req(301, 'HEAD'), ('', 'HEAD'))
+            self.assertEqual(do_req(302, 'POST', True), ('', 'GET'))
+            self.assertEqual(do_req(302, 'HEAD'), ('', 'HEAD'))
 
-    def test_nocheckcertificate(self):
-        if sys.version_info >= (2, 7, 9):  # No certificate checking anyways
-            ydl = YoutubeDL({'logger': FakeLogger()})
-            self.assertRaises(
-                Exception,
-                ydl.extract_info, 'https://127.0.0.1:%d/video.html' % self.port)
+            self.assertEqual(do_req(301, 'PUT'), ('testdata', 'PUT'))
+            self.assertEqual(do_req(302, 'PUT'), ('testdata', 'PUT'))
 
-        ydl = YoutubeDL({'logger': FakeLogger(), 'nocheckcertificate': True})
-        r = ydl.extract_info('https://127.0.0.1:%d/video.html' % self.port)
-        self.assertEqual(r['entries'][0]['url'], 'https://127.0.0.1:%d/vid.mp4' % self.port)
+            # 307 and 308 should not change method
+            for m in ('POST', 'PUT'):
+                self.assertEqual(do_req(307, m), ('testdata', m))
+                self.assertEqual(do_req(308, m), ('testdata', m))
+
+            self.assertEqual(do_req(307, 'HEAD'), ('', 'HEAD'))
+            self.assertEqual(do_req(308, 'HEAD'), ('', 'HEAD'))
+
+            # These should not redirect and instead raise an HTTPError
+            for code in (300, 304, 305, 306):
+                with self.assertRaises(compat_urllib_HTTPError):
+                    do_req(code, 'GET')
+
+    # Jython 2.7.1 times out for some reason
+    @expectedFailureIf(sys.platform.startswith('java') and sys.version_info < (2, 7, 2))
+    def test_content_type(self):
+        # https://github.com/yt-dlp/yt-dlp/commit/379a4f161d4ad3e40932dcf5aca6e6fb9715ab28
+        with FakeYDL({'nocheckcertificate': True}) as ydl:
+            # method should be auto-detected as POST
+            r = sanitized_Request(self._test_url('headers', scheme='https'), data=urlencode_postdata({'test': 'test'}))
+
+            headers = ydl.urlopen(r).read().decode('utf-8')
+            self.assertIn('Content-Type: application/x-www-form-urlencoded', headers)
+
+            # test http
+            r = sanitized_Request(self._test_url('headers'), data=urlencode_postdata({'test': 'test'}))
+            headers = ydl.urlopen(r).read().decode('utf-8')
+            self.assertIn('Content-Type: application/x-www-form-urlencoded', headers)
+
+    def test_update_req(self):
+        req = sanitized_Request('http://example.com')
+        assert req.data is None
+        assert req.get_method() == 'GET'
+        assert not req.has_header('Content-Type')
+        # Test that zero-byte payloads will be sent
+        req = update_Request(req, data=b'')
+        assert req.data == b''
+        assert req.get_method() == 'POST'
+        # yt-dl expects data to be encoded and Content-Type to be added by sender
+        # assert req.get_header('Content-Type') == 'application/x-www-form-urlencoded'
+
+    def test_cookiejar(self):
+        with FakeYDL() as ydl:
+            ydl.cookiejar.set_cookie(compat_http_cookiejar_Cookie(
+                0, 'test', 'ytdl', None, False, '127.0.0.1', True,
+                False, '/headers', True, False, None, False, None, None, {}))
+            data = ydl.urlopen(sanitized_Request(
+                self._test_url('headers'))).read().decode('utf-8')
+            self.assertIn('Cookie: test=ytdl', data)
+
+    def test_passed_cookie_header(self):
+        # We should accept a Cookie header being passed as in normal headers and handle it appropriately.
+        with FakeYDL() as ydl:
+            # Specified Cookie header should be used
+            res = ydl.urlopen(sanitized_Request(
+                self._test_url('headers'), headers={'Cookie': 'test=test'})).read().decode('utf-8')
+            self.assertIn('Cookie: test=test', res)
+
+            # Specified Cookie header should be removed on any redirect
+            res = ydl.urlopen(sanitized_Request(
+                self._test_url('308-to-headers'), headers={'Cookie': 'test=test'})).read().decode('utf-8')
+            self.assertNotIn('Cookie: test=test', res)
+
+            # Specified Cookie header should override global cookiejar for that request
+            ydl.cookiejar.set_cookie(compat_http_cookiejar_Cookie(
+                0, 'test', 'ytdlp', None, False, '127.0.0.1', True,
+                False, '/headers', True, False, None, False, None, None, {}))
+            data = ydl.urlopen(sanitized_Request(
+                self._test_url('headers'), headers={'Cookie': 'test=test'})).read().decode('utf-8')
+            self.assertNotIn('Cookie: test=ytdlp', data)
+            self.assertIn('Cookie: test=test', data)
+
+    def test_no_compression_compat_header(self):
+        with FakeYDL() as ydl:
+            data = ydl.urlopen(
+                sanitized_Request(
+                    self._test_url('headers'),
+                    headers={'Youtubedl-no-compression': True})).read()
+            self.assertIn(b'Accept-Encoding: identity', data)
+            self.assertNotIn(b'youtubedl-no-compression', data.lower())
+
+    def test_gzip_trailing_garbage(self):
+        # https://github.com/ytdl-org/youtube-dl/commit/aa3e950764337ef9800c936f4de89b31c00dfcf5
+        # https://github.com/ytdl-org/youtube-dl/commit/6f2ec15cee79d35dba065677cad9da7491ec6e6f
+        with FakeYDL() as ydl:
+            data = ydl.urlopen(sanitized_Request(self._test_url('trailing_garbage'))).read().decode('utf-8')
+            self.assertEqual(data, '<html><video src="/vid.mp4" /></html>')
+
+    def __test_compression(self, encoding):
+        with FakeYDL() as ydl:
+            res = ydl.urlopen(
+                sanitized_Request(
+                    self._test_url('content-encoding'),
+                    headers={'ytdl-encoding': encoding}))
+            # decoded encodings are removed: only check for valid decompressed data
+            self.assertEqual(res.read(), b'<html><video src="/vid.mp4" /></html>')
+
+    @unittest.skipUnless(brotli, 'brotli support is not installed')
+    def test_brotli(self):
+        self.__test_compression('br')
+
+    def test_deflate(self):
+        self.__test_compression('deflate')
+
+    def test_gzip(self):
+        self.__test_compression('gzip')
+
+    def test_multiple_encodings(self):
+        # https://www.rfc-editor.org/rfc/rfc9110.html#section-8.4
+        for pair in ('gzip,deflate', 'deflate, gzip', 'gzip, gzip', 'deflate, deflate'):
+            self.__test_compression(pair)
+
+    def test_unsupported_encoding(self):
+        # it should return the raw content
+        with FakeYDL() as ydl:
+            res = ydl.urlopen(
+                sanitized_Request(
+                    self._test_url('content-encoding'),
+                    headers={'ytdl-encoding': 'unsupported'}))
+            self.assertEqual(res.headers.get('Content-Encoding'), 'unsupported')
+            self.assertEqual(res.read(), b'raw')
+
+    def test_remove_dot_segments(self):
+        with FakeYDL() as ydl:
+            res = ydl.urlopen(sanitized_Request(self._test_url('a/b/./../../headers')))
+            self.assertEqual(compat_urllib_parse.urlparse(res.geturl()).path, '/headers')
+
+            res = ydl.urlopen(sanitized_Request(self._test_url('redirect_dotsegments')))
+            self.assertEqual(compat_urllib_parse.urlparse(res.geturl()).path, '/headers')
 
 
 def _build_proxy_handler(name):
@@ -109,7 +515,7 @@ def _build_proxy_handler(name):
             self.send_response(200)
             self.send_header('Content-Type', 'text/plain; charset=utf-8')
             self.end_headers()
-            self.wfile.write('{self.proxy_name}: {self.path}'.format(self=self).encode('utf-8'))
+            self.wfile.write('{0}: {1}'.format(self.proxy_name, self.path).encode('utf-8'))
     return HTTPTestRequestHandler
 
 
@@ -129,10 +535,30 @@ class TestProxy(unittest.TestCase):
         self.geo_proxy_thread.daemon = True
         self.geo_proxy_thread.start()
 
+    def tearDown(self):
+
+        def closer(svr):
+            def _closer():
+                svr.shutdown()
+                svr.server_close()
+            return _closer
+
+        shutdown_thread = threading.Thread(target=closer(self.proxy))
+        shutdown_thread.start()
+        self.proxy_thread.join(2.0)
+
+        shutdown_thread = threading.Thread(target=closer(self.geo_proxy))
+        shutdown_thread.start()
+        self.geo_proxy_thread.join(2.0)
+
+    def _test_proxy(self, host='127.0.0.1', port=None):
+        return '{0}:{1}'.format(
+            host, port if port is not None else self.port)
+
     def test_proxy(self):
-        geo_proxy = '127.0.0.1:{0}'.format(self.geo_port)
+        geo_proxy = self._test_proxy(port=self.geo_port)
         ydl = YoutubeDL({
-            'proxy': '127.0.0.1:{0}'.format(self.port),
+            'proxy': self._test_proxy(),
             'geo_verification_proxy': geo_proxy,
         })
         url = 'http://foo.com/bar'
@@ -146,7 +572,7 @@ class TestProxy(unittest.TestCase):
 
     def test_proxy_with_idn(self):
         ydl = YoutubeDL({
-            'proxy': '127.0.0.1:{0}'.format(self.port),
+            'proxy': self._test_proxy(),
         })
         url = 'http://中文.tw/'
         response = ydl.urlopen(url).read().decode('utf-8')
@@ -154,5 +580,25 @@ class TestProxy(unittest.TestCase):
         self.assertEqual(response, 'normal: http://xn--fiq228c.tw/')
 
 
+class TestFileURL(unittest.TestCase):
+    # See https://github.com/ytdl-org/youtube-dl/issues/8227
+    def test_file_urls(self):
+        tf = tempfile.NamedTemporaryFile(delete=False)
+        tf.write(b'foobar')
+        tf.close()
+        url = compat_urllib_parse.urljoin('file://', pathname2url(tf.name))
+        with FakeYDL() as ydl:
+            self.assertRaisesRegexp(
+                compat_urllib_error.URLError, 'file:// scheme is explicitly disabled in youtube-dl for security reasons', ydl.urlopen, url)
+        # not yet implemented
+        """
+        with FakeYDL({'enable_file_urls': True}) as ydl:
+            res = ydl.urlopen(url)
+            self.assertEqual(res.read(), b'foobar')
+            res.close()
+        """
+        os.unlink(tf.name)
+
+
 if __name__ == '__main__':
     unittest.main()

test/test_jsinterp.py

@@ -18,6 +18,7 @@ class TestJSInterpreter(unittest.TestCase):
     def test_basic(self):
         jsi = JSInterpreter('function x(){;}')
         self.assertEqual(jsi.call_function('x'), None)
+        self.assertEqual(repr(jsi.extract_function('x')), 'F<x>')
 
         jsi = JSInterpreter('function x3(){return 42;}')
         self.assertEqual(jsi.call_function('x3'), 42)
@@ -32,6 +33,55 @@ class TestJSInterpreter(unittest.TestCase):
         jsi = JSInterpreter('function x4(a){return 2*a+1;}')
         self.assertEqual(jsi.call_function('x4', 3), 7)
 
+    def test_add(self):
+        jsi = JSInterpreter('function f(){return 42 + 7;}')
+        self.assertEqual(jsi.call_function('f'), 49)
+        jsi = JSInterpreter('function f(){return 42 + undefined;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+        jsi = JSInterpreter('function f(){return 42 + null;}')
+        self.assertEqual(jsi.call_function('f'), 42)
+
+    def test_sub(self):
+        jsi = JSInterpreter('function f(){return 42 - 7;}')
+        self.assertEqual(jsi.call_function('f'), 35)
+        jsi = JSInterpreter('function f(){return 42 - undefined;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+        jsi = JSInterpreter('function f(){return 42 - null;}')
+        self.assertEqual(jsi.call_function('f'), 42)
+
+    def test_mul(self):
+        jsi = JSInterpreter('function f(){return 42 * 7;}')
+        self.assertEqual(jsi.call_function('f'), 294)
+        jsi = JSInterpreter('function f(){return 42 * undefined;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+        jsi = JSInterpreter('function f(){return 42 * null;}')
+        self.assertEqual(jsi.call_function('f'), 0)
+
+    def test_div(self):
+        jsi = JSInterpreter('function f(a, b){return a / b;}')
+        self.assertTrue(math.isnan(jsi.call_function('f', 0, 0)))
+        self.assertTrue(math.isnan(jsi.call_function('f', JS_Undefined, 1)))
+        self.assertTrue(math.isinf(jsi.call_function('f', 2, 0)))
+        self.assertEqual(jsi.call_function('f', 0, 3), 0)
+
+    def test_mod(self):
+        jsi = JSInterpreter('function f(){return 42 % 7;}')
+        self.assertEqual(jsi.call_function('f'), 0)
+        jsi = JSInterpreter('function f(){return 42 % 0;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+        jsi = JSInterpreter('function f(){return 42 % undefined;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+
+    def test_exp(self):
+        jsi = JSInterpreter('function f(){return 42 ** 2;}')
+        self.assertEqual(jsi.call_function('f'), 1764)
+        jsi = JSInterpreter('function f(){return 42 ** undefined;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+        jsi = JSInterpreter('function f(){return 42 ** null;}')
+        self.assertEqual(jsi.call_function('f'), 1)
+        jsi = JSInterpreter('function f(){return undefined ** 42;}')
+        self.assertTrue(math.isnan(jsi.call_function('f')))
+
     def test_empty_return(self):
         jsi = JSInterpreter('function f(){return; y()}')
         self.assertEqual(jsi.call_function('f'), None)
@@ -442,10 +492,12 @@ class TestJSInterpreter(unittest.TestCase):
         jsi = JSInterpreter('''
         function x() { let a=/,,[/,913,/](,)}/; "".replace(a, ""); return a; }
         ''')
-        attrs = set(('findall', 'finditer', 'flags', 'groupindex',
-                     'groups', 'match', 'pattern', 'scanner',
-                     'search', 'split', 'sub', 'subn'))
-        self.assertTrue(set(dir(jsi.call_function('x'))) > attrs)
+        attrs = set(('findall', 'finditer', 'match', 'scanner', 'search',
+                     'split', 'sub', 'subn'))
+        if sys.version_info >= (2, 7):
+            # documented for 2.6 but may not be found
+            attrs.update(('flags', 'groupindex', 'groups', 'pattern'))
+        self.assertSetEqual(set(dir(jsi.call_function('x'))) & attrs, attrs)
 
         jsi = JSInterpreter('''
         function x() { let a=/,,[/,913,/](,)}/i; return a; }
@@ -505,6 +557,30 @@ class TestJSInterpreter(unittest.TestCase):
         jsi = JSInterpreter('function x(){return 1236566549 << 5}')
         self.assertEqual(jsi.call_function('x'), 915423904)
 
+    def test_bitwise_operators_madness(self):
+        jsi = JSInterpreter('function x(){return null << 5}')
+        self.assertEqual(jsi.call_function('x'), 0)
+
+        jsi = JSInterpreter('function x(){return undefined >> 5}')
+        self.assertEqual(jsi.call_function('x'), 0)
+
+        jsi = JSInterpreter('function x(){return 42 << NaN}')
+        self.assertEqual(jsi.call_function('x'), 42)
+
+        jsi = JSInterpreter('function x(){return 42 << Infinity}')
+        self.assertEqual(jsi.call_function('x'), 42)
+
+    def test_32066(self):
+        jsi = JSInterpreter("function x(){return Math.pow(3, 5) + new Date('1970-01-01T08:01:42.000+08:00') / 1000 * -239 - -24205;}")
+        self.assertEqual(jsi.call_function('x'), 70)
+
+    def test_unary_operators(self):
+        jsi = JSInterpreter('function f(){return 2  -  - - 2;}')
+        self.assertEqual(jsi.call_function('f'), 0)
+        # fails
+        # jsi = JSInterpreter('function f(){return 2 + - + - - 2;}')
+        # self.assertEqual(jsi.call_function('f'), 0)
+
     """ # fails so far
     def test_packed(self):
         jsi = JSInterpreter('''function x(p,a,c,k,e,d){while(c--)if(k[c])p=p.replace(new RegExp('\\b'+c.toString(a)+'\\b','g'),k[c]);return p}''')

test/test_swfinterp.py

@@ -5,16 +5,18 @@ from __future__ import unicode_literals
 import os
 import sys
 import unittest
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
+dirn = os.path.dirname
+
+sys.path.insert(0, dirn(dirn(os.path.abspath(__file__))))
 
 import errno
-import io
 import json
 import re
 import subprocess
 
 from youtube_dl.swfinterp import SWFInterpreter
+from youtube_dl.compat import compat_open as open
 
 
 TEST_DIR = os.path.join(
@@ -43,7 +45,7 @@ def _make_testfunc(testfile):
                     '-static-link-runtime-shared-libraries', as_file])
             except OSError as ose:
                 if ose.errno == errno.ENOENT:
-                    print('mxmlc not found! Skipping test.')
+                    self.skipTest('mxmlc not found!')
                     return
                 raise
 
@@ -51,7 +53,7 @@ def _make_testfunc(testfile):
             swf_content = swf_f.read()
         swfi = SWFInterpreter(swf_content)
 
-        with io.open(as_file, 'r', encoding='utf-8') as as_f:
+        with open(as_file, 'r', encoding='utf-8') as as_f:
             as_content = as_f.read()
 
         def _find_spec(key):

test/test_unicode_literals.py

@@ -2,19 +2,21 @@ from __future__ import unicode_literals
 
 # Allow direct execution
 import os
+import re
 import sys
 import unittest
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
-import io
-import re
+dirn = os.path.dirname
 
-rootDir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+rootDir = dirn(dirn(os.path.abspath(__file__)))
+
+sys.path.insert(0, rootDir)
 
 IGNORED_FILES = [
     'setup.py',  # http://bugs.python.org/issue13943
     'conf.py',
     'buildserver.py',
+    'get-pip.py',
 ]
 
 IGNORED_DIRS = [
@@ -23,6 +25,7 @@ IGNORED_DIRS = [
 ]
 
 from test.helper import assertRegexpMatches
+from youtube_dl.compat import compat_open as open
 
 
 class TestUnicodeLiterals(unittest.TestCase):
@@ -40,7 +43,7 @@ class TestUnicodeLiterals(unittest.TestCase):
                     continue
 
                 fn = os.path.join(dirpath, basename)
-                with io.open(fn, encoding='utf-8') as inf:
+                with open(fn, encoding='utf-8') as inf:
                     code = inf.read()
 
                 if "'" not in code and '"' not in code:

test/test_utils.py

@@ -20,7 +20,7 @@ import xml.etree.ElementTree
 from youtube_dl.utils import (
     age_restricted,
     args_to_str,
-    encode_base_n,
+    base_url,
     caesar,
     clean_html,
     clean_podcast_url,
@@ -29,10 +29,12 @@ from youtube_dl.utils import (
     detect_exe_version,
     determine_ext,
     dict_get,
+    encode_base_n,
     encode_compat_str,
     encodeFilename,
     escape_rfc3986,
     escape_url,
+    expand_path,
     extract_attributes,
     ExtractorError,
     find_xpath_attr,
@@ -51,6 +53,7 @@ from youtube_dl.utils import (
     js_to_json,
     LazyList,
     limit_length,
+    lowercase_escape,
     merge_dicts,
     mimetype2ext,
     month_by_name,
@@ -59,30 +62,33 @@ from youtube_dl.utils import (
     OnDemandPagedList,
     orderedSet,
     parse_age_limit,
+    parse_bitrate,
     parse_duration,
     parse_filesize,
+    parse_codecs,
     parse_count,
     parse_iso8601,
     parse_resolution,
-    parse_bitrate,
+    parse_qs,
     pkcs1pad,
-    read_batch_urls,
-    sanitize_filename,
-    sanitize_path,
-    sanitize_url,
-    expand_path,
     prepend_extension,
-    replace_extension,
+    read_batch_urls,
     remove_start,
     remove_end,
     remove_quotes,
+    replace_extension,
     rot47,
+    sanitize_filename,
+    sanitize_path,
+    sanitize_url,
     shell_quote,
     smuggle_url,
+    str_or_none,
     str_to_int,
     strip_jsonp,
     strip_or_none,
     subtitles_filename,
+    T,
     timeconvert,
     traverse_obj,
     try_call,
@@ -91,10 +97,8 @@ from youtube_dl.utils import (
     unified_timestamp,
     unsmuggle_url,
     uppercase_escape,
-    lowercase_escape,
     url_basename,
     url_or_none,
-    base_url,
     urljoin,
     urlencode_postdata,
     urshift,
@@ -112,7 +116,7 @@ from youtube_dl.utils import (
     cli_option,
     cli_valueless_option,
     cli_bool_option,
-    parse_codecs,
+    YoutubeDLHandler,
 )
 from youtube_dl.compat import (
     compat_chr,
@@ -122,7 +126,6 @@ from youtube_dl.compat import (
     compat_setenv,
     compat_str,
     compat_urlparse,
-    compat_parse_qs,
 )
 
 
@@ -680,38 +683,36 @@ class TestUtil(unittest.TestCase):
         self.assertTrue(isinstance(data, bytes))
 
     def test_update_url_query(self):
-        def query_dict(url):
-            return compat_parse_qs(compat_urlparse.urlparse(url).query)
-        self.assertEqual(query_dict(update_url_query(
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'quality': ['HD'], 'format': ['mp4']})),
-            query_dict('http://example.com/path?quality=HD&format=mp4'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?quality=HD&format=mp4'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'system': ['LINUX', 'WINDOWS']})),
-            query_dict('http://example.com/path?system=LINUX&system=WINDOWS'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?system=LINUX&system=WINDOWS'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'fields': 'id,formats,subtitles'})),
-            query_dict('http://example.com/path?fields=id,formats,subtitles'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?fields=id,formats,subtitles'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'fields': ('id,formats,subtitles', 'thumbnails')})),
-            query_dict('http://example.com/path?fields=id,formats,subtitles&fields=thumbnails'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?fields=id,formats,subtitles&fields=thumbnails'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path?manifest=f4m', {'manifest': []})),
-            query_dict('http://example.com/path'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path?system=LINUX&system=WINDOWS', {'system': 'LINUX'})),
-            query_dict('http://example.com/path?system=LINUX'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?system=LINUX'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'fields': b'id,formats,subtitles'})),
-            query_dict('http://example.com/path?fields=id,formats,subtitles'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?fields=id,formats,subtitles'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'width': 1080, 'height': 720})),
-            query_dict('http://example.com/path?width=1080&height=720'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?width=1080&height=720'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'bitrate': 5020.43})),
-            query_dict('http://example.com/path?bitrate=5020.43'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?bitrate=5020.43'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'test': '第二行тест'})),
-            query_dict('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
+            parse_qs('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
 
     def test_multipart_encode(self):
         self.assertEqual(
@@ -903,6 +904,111 @@ class TestUtil(unittest.TestCase):
         )
         self.assertEqual(escape_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
 
+    def test_remove_dot_segments(self):
+
+        def remove_dot_segments(p):
+            q = '' if p.startswith('/') else '/'
+            p = 'http://example.com' + q + p
+            p = compat_urlparse.urlsplit(YoutubeDLHandler._fix_path(p)).path
+            return p[1:] if q else p
+
+        self.assertEqual(remove_dot_segments('/a/b/c/./../../g'), '/a/g')
+        self.assertEqual(remove_dot_segments('mid/content=5/../6'), 'mid/6')
+        self.assertEqual(remove_dot_segments('/ad/../cd'), '/cd')
+        self.assertEqual(remove_dot_segments('/ad/../cd/'), '/cd/')
+        self.assertEqual(remove_dot_segments('/..'), '/')
+        self.assertEqual(remove_dot_segments('/./'), '/')
+        self.assertEqual(remove_dot_segments('/./a'), '/a')
+        self.assertEqual(remove_dot_segments('/abc/./.././d/././e/.././f/./../../ghi'), '/ghi')
+        self.assertEqual(remove_dot_segments('/'), '/')
+        self.assertEqual(remove_dot_segments('/t'), '/t')
+        self.assertEqual(remove_dot_segments('t'), 't')
+        self.assertEqual(remove_dot_segments(''), '')
+        self.assertEqual(remove_dot_segments('/../a/b/c'), '/a/b/c')
+        self.assertEqual(remove_dot_segments('../a'), 'a')
+        self.assertEqual(remove_dot_segments('./a'), 'a')
+        self.assertEqual(remove_dot_segments('.'), '')
+        self.assertEqual(remove_dot_segments('////'), '////')
+
+    def test_js_to_json_vars_strings(self):
+        self.assertDictEqual(
+            json.loads(js_to_json(
+                '''{
+                    'null': a,
+                    'nullStr': b,
+                    'true': c,
+                    'trueStr': d,
+                    'false': e,
+                    'falseStr': f,
+                    'unresolvedVar': g,
+                }''',
+                {
+                    'a': 'null',
+                    'b': '"null"',
+                    'c': 'true',
+                    'd': '"true"',
+                    'e': 'false',
+                    'f': '"false"',
+                    'g': 'var',
+                }
+            )),
+            {
+                'null': None,
+                'nullStr': 'null',
+                'true': True,
+                'trueStr': 'true',
+                'false': False,
+                'falseStr': 'false',
+                'unresolvedVar': 'var'
+            }
+        )
+
+        self.assertDictEqual(
+            json.loads(js_to_json(
+                '''{
+                    'int': a,
+                    'intStr': b,
+                    'float': c,
+                    'floatStr': d,
+                }''',
+                {
+                    'a': '123',
+                    'b': '"123"',
+                    'c': '1.23',
+                    'd': '"1.23"',
+                }
+            )),
+            {
+                'int': 123,
+                'intStr': '123',
+                'float': 1.23,
+                'floatStr': '1.23',
+            }
+        )
+
+        self.assertDictEqual(
+            json.loads(js_to_json(
+                '''{
+                    'object': a,
+                    'objectStr': b,
+                    'array': c,
+                    'arrayStr': d,
+                }''',
+                {
+                    'a': '{}',
+                    'b': '"{}"',
+                    'c': '[]',
+                    'd': '"[]"',
+                }
+            )),
+            {
+                'object': {},
+                'objectStr': '{}',
+                'array': [],
+                'arrayStr': '[]',
+            }
+        )
+
     def test_js_to_json_realworld(self):
         inp = '''{
             'clip':{'provider':'pseudo'}
@@ -973,10 +1079,10 @@ class TestUtil(unittest.TestCase):
             !42: 42
         }''')
         self.assertEqual(json.loads(on), {
-            'a': 0,
-            'b': 1,
-            'c': 0,
-            'd': 42.42,
+            'a': True,
+            'b': False,
+            'c': False,
+            'd': True,
             'e': [],
             'f': "abc",
             'g': "",
@@ -1046,10 +1152,26 @@ class TestUtil(unittest.TestCase):
         on = js_to_json('{ "040": "040" }')
         self.assertEqual(json.loads(on), {'040': '040'})
 
+        on = js_to_json('[1,//{},\n2]')
+        self.assertEqual(json.loads(on), [1, 2])
+
+        on = js_to_json(r'"\^\$\#"')
+        self.assertEqual(json.loads(on), R'^$#', msg='Unnecessary escapes should be stripped')
+
+        on = js_to_json('\'"\\""\'')
+        self.assertEqual(json.loads(on), '"""', msg='Unnecessary quote escape should be escaped')
+
     def test_js_to_json_malformed(self):
         self.assertEqual(js_to_json('42a1'), '42"a1"')
         self.assertEqual(js_to_json('42a-1'), '42"a"-1')
 
+    def test_js_to_json_template_literal(self):
+        self.assertEqual(js_to_json('`Hello ${name}`', {'name': '"world"'}), '"Hello world"')
+        self.assertEqual(js_to_json('`${name}${name}`', {'name': '"X"'}), '"XX"')
+        self.assertEqual(js_to_json('`${name}${name}`', {'name': '5'}), '"55"')
+        self.assertEqual(js_to_json('`${name}"${name}"`', {'name': '5'}), '"5\\"5\\""')
+        self.assertEqual(js_to_json('`${name}`', {}), '"name"')
+
     def test_extract_attributes(self):
         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
         self.assertEqual(extract_attributes("<e x='y'>"), {'x': 'y'})
@@ -1563,8 +1685,10 @@ Line 1
         self.assertEqual(variadic(None), (None, ))
         self.assertEqual(variadic('spam'), ('spam', ))
         self.assertEqual(variadic('spam', allowed_types=dict), 'spam')
+        self.assertEqual(variadic('spam', allowed_types=[dict]), 'spam')
 
     def test_traverse_obj(self):
+        str = compat_str
         _TEST_DATA = {
             100: 100,
             1.2: 1.2,
@@ -1582,6 +1706,11 @@ Line 1
             'dict': {},
         }
 
+        # define a pukka Iterable
+        def iter_range(stop):
+            for from_ in range(stop):
+                yield from_
+
         # Test base functionality
         self.assertEqual(traverse_obj(_TEST_DATA, ('str',)), 'str',
                          msg='allow tuple path')
@@ -1597,22 +1726,60 @@ Line 1
 
         # Test Ellipsis behavior
         self.assertCountEqual(traverse_obj(_TEST_DATA, Ellipsis),
-                              (item for item in _TEST_DATA.values() if item is not None),
-                              msg='`...` should give all values except `None`')
+                              (item for item in _TEST_DATA.values() if item not in (None, {})),
+                              msg='`...` should give all non-discarded values')
         self.assertCountEqual(traverse_obj(_TEST_DATA, ('urls', 0, Ellipsis)), _TEST_DATA['urls'][0].values(),
                               msg='`...` selection for dicts should select all values')
         self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, Ellipsis, 'url')),
                          ['https://www.example.com/0', 'https://www.example.com/1'],
                          msg='nested `...` queries should work')
-        self.assertCountEqual(traverse_obj(_TEST_DATA, (Ellipsis, Ellipsis, 'index')), range(4),
+        self.assertCountEqual(traverse_obj(_TEST_DATA, (Ellipsis, Ellipsis, 'index')), iter_range(4),
                               msg='`...` query result should be flattened')
+        self.assertEqual(traverse_obj(iter(range(4)), Ellipsis), list(range(4)),
+                         msg='`...` should accept iterables')
 
         # Test function as key
         self.assertEqual(traverse_obj(_TEST_DATA, lambda x, y: x == 'urls' and isinstance(y, list)),
                          [_TEST_DATA['urls']],
                          msg='function as query key should perform a filter based on (key, value)')
-        self.assertCountEqual(traverse_obj(_TEST_DATA, lambda _, x: isinstance(x[0], compat_str)), {'str'},
+        self.assertCountEqual(traverse_obj(_TEST_DATA, lambda _, x: isinstance(x[0], str)), set(('str',)),
                               msg='exceptions in the query function should be caught')
+        self.assertEqual(traverse_obj(iter(range(4)), lambda _, x: x % 2 == 0), [0, 2],
+                         msg='function key should accept iterables')
+        if __debug__:
+            with self.assertRaises(Exception, msg='Wrong function signature should raise in debug'):
+                traverse_obj(_TEST_DATA, lambda a: Ellipsis)
+            with self.assertRaises(Exception, msg='Wrong function signature should raise in debug'):
+                traverse_obj(_TEST_DATA, lambda a, b, c: Ellipsis)
+
+        # Test set as key (transformation/type, like `expected_type`)
+        self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str.upper), )), ['STR'],
+                         msg='Function in set should be a transformation')
+        self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str))), ['str'],
+                         msg='Type in set should be a type filter')
+        self.assertEqual(traverse_obj(_TEST_DATA, T(dict)), _TEST_DATA,
+                         msg='A single set should be wrapped into a path')
+        self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str.upper))), ['STR'],
+                         msg='Transformation function should not raise')
+        self.assertEqual(traverse_obj(_TEST_DATA, (Ellipsis, T(str_or_none))),
+                         [item for item in map(str_or_none, _TEST_DATA.values()) if item is not None],
+                         msg='Function in set should be a transformation')
+        if __debug__:
+            with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
+                traverse_obj(_TEST_DATA, set())
+            with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
+                traverse_obj(_TEST_DATA, set((str.upper, str)))
+
+        # Test `slice` as a key
+        _SLICE_DATA = [0, 1, 2, 3, 4]
+        self.assertEqual(traverse_obj(_TEST_DATA, ('dict', slice(1))), None,
+                         msg='slice on a dictionary should not throw')
+        self.assertEqual(traverse_obj(_SLICE_DATA, slice(1)), _SLICE_DATA[:1],
+                         msg='slice key should apply slice to sequence')
+        self.assertEqual(traverse_obj(_SLICE_DATA, slice(1, 2)), _SLICE_DATA[1:2],
+                         msg='slice key should apply slice to sequence')
+        self.assertEqual(traverse_obj(_SLICE_DATA, slice(1, 4, 2)), _SLICE_DATA[1:4:2],
+                         msg='slice key should apply slice to sequence')
 
         # Test alternative paths
         self.assertEqual(traverse_obj(_TEST_DATA, 'fail', 'str'), 'str',
@@ -1658,15 +1825,23 @@ Line 1
                          {0: ['https://www.example.com/1', 'https://www.example.com/0']},
                          msg='triple nesting in dict path should be treated as branches')
         self.assertEqual(traverse_obj(_TEST_DATA, {0: 'fail'}), {},
-                         msg='remove `None` values when dict key')
+                         msg='remove `None` values when top level dict key fails')
         self.assertEqual(traverse_obj(_TEST_DATA, {0: 'fail'}, default=Ellipsis), {0: Ellipsis},
-                         msg='do not remove `None` values if `default`')
-        self.assertEqual(traverse_obj(_TEST_DATA, {0: 'dict'}), {0: {}},
-                         msg='do not remove empty values when dict key')
-        self.assertEqual(traverse_obj(_TEST_DATA, {0: 'dict'}, default=Ellipsis), {0: {}},
-                         msg='do not remove empty values when dict key and a default')
-        self.assertEqual(traverse_obj(_TEST_DATA, {0: ('dict', Ellipsis)}), {0: []},
-                         msg='if branch in dict key not successful, return `[]`')
+                         msg='use `default` if key fails and `default`')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: 'dict'}), {},
+                         msg='remove empty values when dict key')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: 'dict'}, default=Ellipsis), {0: Ellipsis},
+                         msg='use `default` when dict key and a default')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: {0: 'fail'}}), {},
+                         msg='remove empty values when nested dict key fails')
+        self.assertEqual(traverse_obj(None, {0: 'fail'}), {},
+                         msg='default to dict if pruned')
+        self.assertEqual(traverse_obj(None, {0: 'fail'}, default=Ellipsis), {0: Ellipsis},
+                         msg='default to dict if pruned and default is given')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: {0: 'fail'}}, default=Ellipsis), {0: {0: Ellipsis}},
+                         msg='use nested `default` when nested dict key fails and `default`')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: ('dict', Ellipsis)}), {},
+                         msg='remove key if branch in dict key not successful')
 
         # Testing default parameter behavior
         _DEFAULT_DATA = {'None': None, 'int': 0, 'list': []}
@@ -1690,20 +1865,55 @@ Line 1
                          msg='if branched but not successful return `[]`, not `default`')
         self.assertEqual(traverse_obj(_DEFAULT_DATA, ('list', Ellipsis)), [],
                          msg='if branched but object is empty return `[]`, not `default`')
+        self.assertEqual(traverse_obj(None, Ellipsis), [],
+                         msg='if branched but object is `None` return `[]`, not `default`')
+        self.assertEqual(traverse_obj({0: None}, (0, Ellipsis)), [],
+                         msg='if branched but state is `None` return `[]`, not `default`')
+
+        branching_paths = [
+            ('fail', Ellipsis),
+            (Ellipsis, 'fail'),
+            100 * ('fail',) + (Ellipsis,),
+            (Ellipsis,) + 100 * ('fail',),
+        ]
+        for branching_path in branching_paths:
+            self.assertEqual(traverse_obj({}, branching_path), [],
+                             msg='if branched but state is `None`, return `[]` (not `default`)')
+            self.assertEqual(traverse_obj({}, 'fail', branching_path), [],
+                             msg='if branching in last alternative and previous did not match, return `[]` (not `default`)')
+            self.assertEqual(traverse_obj({0: 'x'}, 0, branching_path), 'x',
+                             msg='if branching in last alternative and previous did match, return single value')
+            self.assertEqual(traverse_obj({0: 'x'}, branching_path, 0), 'x',
+                             msg='if branching in first alternative and non-branching path does match, return single value')
+            self.assertEqual(traverse_obj({}, branching_path, 'fail'), None,
+                             msg='if branching in first alternative and non-branching path does not match, return `default`')
 
         # Testing expected_type behavior
         _EXPECTED_TYPE_DATA = {'str': 'str', 'int': 0}
-        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=compat_str), 'str',
-                         msg='accept matching `expected_type` type')
-        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=int), None,
-                         msg='reject non matching `expected_type` type')
-        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'int', expected_type=lambda x: compat_str(x)), '0',
-                         msg='transform type using type function')
-        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str',
-                                      expected_type=lambda _: 1 / 0), None,
-                         msg='wrap expected_type function in try_call')
-        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, Ellipsis, expected_type=compat_str), ['str'],
-                         msg='eliminate items that expected_type fails on')
+        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=str),
+                         'str', msg='accept matching `expected_type` type')
+        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=int),
+                         None, msg='reject non-matching `expected_type` type')
+        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'int', expected_type=lambda x: str(x)),
+                         '0', msg='transform type using type function')
+        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=lambda _: 1 / 0),
+                         None, msg='wrap expected_type function in try_call')
+        self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, Ellipsis, expected_type=str),
+                         ['str'], msg='eliminate items that expected_type fails on')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: 100, 1: 1.2}, expected_type=int),
+                         {0: 100}, msg='type as expected_type should filter dict values')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: 100, 1: 1.2, 2: 'None'}, expected_type=str_or_none),
+                         {0: '100', 1: '1.2'}, msg='function as expected_type should transform dict values')
+        self.assertEqual(traverse_obj(_TEST_DATA, ({0: 1.2}, 0, set((int_or_none,))), expected_type=int),
+                         1, msg='expected_type should not filter non-final dict values')
+        self.assertEqual(traverse_obj(_TEST_DATA, {0: {0: 100, 1: 'str'}}, expected_type=int),
+                         {0: {0: 100}}, msg='expected_type should transform deep dict values')
+        self.assertEqual(traverse_obj(_TEST_DATA, [({0: '...'}, {0: '...'})], expected_type=type(Ellipsis)),
+                         [{0: Ellipsis}, {0: Ellipsis}], msg='expected_type should transform branched dict values')
+        self.assertEqual(traverse_obj({1: {3: 4}}, [(1, 2), 3], expected_type=int),
+                         [4], msg='expected_type regression for type matching in tuple branching')
+        self.assertEqual(traverse_obj(_TEST_DATA, ['data', Ellipsis], expected_type=int),
+                         [], msg='expected_type regression for type matching in dict result')
 
         # Test get_all behavior
         _GET_ALL_DATA = {'key': [0, 1, 2]}
@@ -1748,14 +1958,23 @@ Line 1
                                       _traverse_string=True), '.',
                          msg='traverse into converted data if `traverse_string`')
         self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', Ellipsis),
-                                      _traverse_string=True), list('str'),
-                         msg='`...` branching into string should result in list')
+                                      _traverse_string=True), 'str',
+                         msg='`...` should result in string (same value) if `traverse_string`')
+        self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', slice(0, None, 2)),
+                                      _traverse_string=True), 'sr',
+                         msg='`slice` should result in string if `traverse_string`')
+        self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == 's'),
+                                      _traverse_string=True), 'str',
+                         msg='function should result in string if `traverse_string`')
         self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', (0, 2)),
                                       _traverse_string=True), ['s', 'r'],
-                         msg='branching into string should result in list')
-        self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda _, x: x),
-                                      _traverse_string=True), list('str'),
-                         msg='function branching into string should result in list')
+                         msg='branching should result in list if `traverse_string`')
+        self.assertEqual(traverse_obj({}, (0, Ellipsis), _traverse_string=True), [],
+                         msg='branching should result in list if `traverse_string`')
+        self.assertEqual(traverse_obj({}, (0, lambda x, y: True), _traverse_string=True), [],
+                         msg='branching should result in list if `traverse_string`')
+        self.assertEqual(traverse_obj({}, (0, slice(1)), _traverse_string=True), [],
+                         msg='branching should result in list if `traverse_string`')
 
         # Test is_user_input behavior
         _IS_USER_INPUT_DATA = {'range8': list(range(8))}
@@ -1792,6 +2011,8 @@ Line 1
                          msg='failing str key on a `re.Match` should return `default`')
         self.assertEqual(traverse_obj(mobj, 8), None,
                          msg='failing int key on a `re.Match` should return `default`')
+        self.assertEqual(traverse_obj(mobj, lambda k, _: k in (0, 'group')), ['0123', '3'],
+                         msg='function on a `re.Match` should give group name as well')
 
     def test_get_first(self):
         self.assertEqual(get_first([{'a': None}, {'a': 'spam'}], 'a'), 'spam')

test/test_write_annotations.py

@@ -11,12 +11,11 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 from test.helper import get_params, try_rm
 
 
-import io
-
 import xml.etree.ElementTree
 
 import youtube_dl.YoutubeDL
 import youtube_dl.extractor
+from youtube_dl.compat import compat_open as open
 
 
 class YoutubeDL(youtube_dl.YoutubeDL):
@@ -51,7 +50,7 @@ class TestAnnotations(unittest.TestCase):
         ydl.download([TEST_ID])
         self.assertTrue(os.path.exists(ANNOTATIONS_FILE))
         annoxml = None
-        with io.open(ANNOTATIONS_FILE, 'r', encoding='utf-8') as annof:
+        with open(ANNOTATIONS_FILE, 'r', encoding='utf-8') as annof:
             annoxml = xml.etree.ElementTree.parse(annof)
         self.assertTrue(annoxml is not None, 'Failed to parse annotations XML')
         root = annoxml.getroot()

test/test_youtube_signature.py

@@ -8,11 +8,14 @@ import sys
 import unittest
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
-import io
 import re
 import string
 
-from youtube_dl.compat import compat_str, compat_urlretrieve
+from youtube_dl.compat import (
+    compat_open as open,
+    compat_str,
+    compat_urlretrieve,
+)
 
 from test.helper import FakeYDL
 from youtube_dl.extractor import YoutubeIE
@@ -143,6 +146,18 @@ _NSIG_TESTS = [
         'https://www.youtube.com/s/player/dac945fd/player_ias.vflset/en_US/base.js',
         'o8BkRxXhuYsBCWi6RplPdP', '3Lx32v_hmzTm6A',
     ),
+    (
+        'https://www.youtube.com/s/player/6f20102c/player_ias.vflset/en_US/base.js',
+        'lE8DhoDmKqnmJJ', 'pJTTX6XyJP2BYw',
+    ),
+    (
+        'https://www.youtube.com/s/player/cfa9e7cb/player_ias.vflset/en_US/base.js',
+        'qO0NiMtYQ7TeJnfFG2', 'k9cuJDHNS5O7kQ',
+    ),
+    (
+        'https://www.youtube.com/s/player/b7910ca8/player_ias.vflset/en_US/base.js',
+        '_hXMCwMt9qE310D', 'LoZMgkkofRMCZQ',
+    ),
 ]
 
 
@@ -196,7 +211,7 @@ def t_factory(name, sig_func, url_pattern):
 
             if not os.path.exists(fn):
                 compat_urlretrieve(url, fn)
-            with io.open(fn, encoding='utf-8') as testf:
+            with open(fn, encoding='utf-8') as testf:
                 jscode = testf.read()
             self.assertEqual(sig_func(jscode, sig_input), expected_sig)
 

youtube_dl/YoutubeDL.py

@@ -4,11 +4,9 @@
 from __future__ import absolute_import, unicode_literals
 
 import collections
-import contextlib
 import copy
 import datetime
 import errno
-import fileinput
 import io
 import itertools
 import json
@@ -26,15 +24,26 @@ import tokenize
 import traceback
 import random
 
+try:
+    from ssl import OPENSSL_VERSION
+except ImportError:
+    # Must be Python 2.6, should be built against 1.0.2
+    OPENSSL_VERSION = 'OpenSSL 1.0.2(?)'
 from string import ascii_letters
 
 from .compat import (
     compat_basestring,
-    compat_cookiejar,
+    compat_collections_chain_map as ChainMap,
+    compat_filter as filter,
     compat_get_terminal_size,
     compat_http_client,
+    compat_http_cookiejar_Cookie,
+    compat_http_cookies_SimpleCookie,
+    compat_integer_types,
     compat_kwargs,
+    compat_map as map,
     compat_numeric_types,
+    compat_open as open,
     compat_os_name,
     compat_str,
     compat_tokenize_tokenize,
@@ -46,6 +55,7 @@ from .compat import (
 from .utils import (
     age_restricted,
     args_to_str,
+    bug_reports_message,
     ContentTooShortError,
     date_from_str,
     DateRange,
@@ -61,10 +71,11 @@ from .utils import (
     format_bytes,
     formatSeconds,
     GeoRestrictedError,
-    HEADRequest,
     int_or_none,
     ISO3166Utils,
+    join_nonempty,
     locked_file,
+    LazyList,
     make_HTTPS_handler,
     MaxDownloadsReached,
     orderedSet,
@@ -76,7 +87,6 @@ from .utils import (
     preferredencoding,
     prepend_extension,
     process_communicate_or_kill,
-    PUTRequest,
     register_socks_protocols,
     render_table,
     replace_extension,
@@ -88,6 +98,7 @@ from .utils import (
     std_headers,
     str_or_none,
     subtitles_filename,
+    traverse_obj,
     UnavailableVideoError,
     url_basename,
     version_tuple,
@@ -97,6 +108,7 @@ from .utils import (
     YoutubeDLCookieProcessor,
     YoutubeDLHandler,
     YoutubeDLRedirectHandler,
+    ytdl_is_updateable,
 )
 from .cache import Cache
 from .extractor import get_info_extractor, gen_extractor_classes, _LAZY_LOADER
@@ -366,6 +378,9 @@ class YoutubeDL(object):
         self.params.update(params)
         self.cache = Cache(self)
 
+        self._header_cookies = []
+        self._load_cookies_from_headers(self.params.get('http_headers'))
+
         def check_deprecated(param, option, suggestion):
             if self.params.get(param) is not None:
                 self.report_warning(
@@ -572,7 +587,7 @@ class YoutubeDL(object):
         if self.params.get('cookiefile') is not None:
             self.cookiejar.save(ignore_discard=True, ignore_expires=True)
 
-    def trouble(self, message=None, tb=None):
+    def trouble(self, *args, **kwargs):
         """Determine action to take when a download problem appears.
 
         Depending on if the downloader has been configured to ignore
@@ -581,6 +596,11 @@ class YoutubeDL(object):
 
         tb, if given, is additional traceback information.
         """
+        # message=None, tb=None, is_error=True
+        message = args[0] if len(args) > 0 else kwargs.get('message', None)
+        tb = args[1] if len(args) > 1 else kwargs.get('tb', None)
+        is_error = args[2] if len(args) > 2 else kwargs.get('is_error', True)
+
         if message is not None:
             self.to_stderr(message)
         if self.params.get('verbose'):
@@ -593,7 +613,10 @@ class YoutubeDL(object):
                 else:
                     tb_data = traceback.format_list(traceback.extract_stack())
                     tb = ''.join(tb_data)
-            self.to_stderr(tb)
+            if tb:
+                self.to_stderr(tb)
+        if not is_error:
+            return
         if not self.params.get('ignoreerrors', False):
             if sys.exc_info()[0] and hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
                 exc_info = sys.exc_info()[1].exc_info
@@ -602,11 +625,18 @@ class YoutubeDL(object):
             raise DownloadError(message, exc_info)
         self._download_retcode = 1
 
-    def report_warning(self, message):
+    def report_warning(self, message, only_once=False, _cache={}):
         '''
         Print the message to stderr, it will be prefixed with 'WARNING:'
         If stderr is a tty file the 'WARNING:' will be colored
         '''
+        if only_once:
+            m_hash = hash((self, message))
+            m_cnt = _cache.setdefault(m_hash, 0)
+            _cache[m_hash] = m_cnt + 1
+            if m_cnt > 0:
+                return
+
         if self.params.get('logger') is not None:
             self.params['logger'].warning(message)
         else:
@@ -619,7 +649,7 @@ class YoutubeDL(object):
             warning_message = '%s %s' % (_msg_header, message)
             self.to_stderr(warning_message)
 
-    def report_error(self, message, tb=None):
+    def report_error(self, message, *args, **kwargs):
         '''
         Do the same as trouble, but prefixes the message with 'ERROR:', colored
         in red if stderr is a tty file.
@@ -628,8 +658,18 @@ class YoutubeDL(object):
             _msg_header = '\033[0;31mERROR:\033[0m'
         else:
             _msg_header = 'ERROR:'
-        error_message = '%s %s' % (_msg_header, message)
-        self.trouble(error_message, tb)
+        kwargs['message'] = '%s %s' % (_msg_header, message)
+        self.trouble(*args, **kwargs)
+
+    def report_unscoped_cookies(self, *args, **kwargs):
+        # message=None, tb=False, is_error=False
+        if len(args) <= 2:
+            kwargs.setdefault('is_error', False)
+            if len(args) <= 0:
+                kwargs.setdefault(
+                    'message',
+                    'Unscoped cookies are not allowed: please specify some sort of scoping')
+        self.report_error(*args, **kwargs)
 
     def report_file_already_downloaded(self, file_name):
         """Report file has already been fully downloaded."""
@@ -825,7 +865,7 @@ class YoutubeDL(object):
                 msg += '\nYou might want to use a VPN or a proxy server (with --proxy) to workaround.'
                 self.report_error(msg)
             except ExtractorError as e:  # An error we somewhat expected
-                self.report_error(compat_str(e), e.format_traceback())
+                self.report_error(compat_str(e), tb=e.format_traceback())
             except MaxDownloadsReached:
                 raise
             except Exception as e:
@@ -835,8 +875,83 @@ class YoutubeDL(object):
                     raise
         return wrapper
 
+    def _remove_cookie_header(self, http_headers):
+        """Filters out `Cookie` header from an `http_headers` dict
+        The `Cookie` header is removed to prevent leaks as a result of unscoped cookies.
+        See: https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-v8mc-9377-rwjj
+
+        @param http_headers     An `http_headers` dict from which any `Cookie` header
+                                should be removed, or None
+        """
+        return dict(filter(lambda pair: pair[0].lower() != 'cookie', (http_headers or {}).items()))
+
+    def _load_cookies(self, data, **kwargs):
+        """Loads cookies from a `Cookie` header
+
+        This tries to work around the security vulnerability of passing cookies to every domain.
+
+        @param data         The Cookie header as a string to load the cookies from
+        @param autoscope    If `False`, scope cookies using Set-Cookie syntax and error for cookie without domains
+                            If `True`, save cookies for later to be stored in the jar with a limited scope
+                            If a URL, save cookies in the jar with the domain of the URL
+        """
+        # autoscope=True (kw-only)
+        autoscope = kwargs.get('autoscope', True)
+
+        for cookie in compat_http_cookies_SimpleCookie(data).values() if data else []:
+            if autoscope and any(cookie.values()):
+                raise ValueError('Invalid syntax in Cookie Header')
+
+            domain = cookie.get('domain') or ''
+            expiry = cookie.get('expires')
+            if expiry == '':  # 0 is valid so we check for `''` explicitly
+                expiry = None
+            prepared_cookie = compat_http_cookiejar_Cookie(
+                cookie.get('version') or 0, cookie.key, cookie.value, None, False,
+                domain, True, True, cookie.get('path') or '', bool(cookie.get('path')),
+                bool(cookie.get('secure')), expiry, False, None, None, {})
+
+            if domain:
+                self.cookiejar.set_cookie(prepared_cookie)
+            elif autoscope is True:
+                self.report_warning(
+                    'Passing cookies as a header is a potential security risk; '
+                    'they will be scoped to the domain of the downloaded urls. '
+                    'Please consider loading cookies from a file or browser instead.',
+                    only_once=True)
+                self._header_cookies.append(prepared_cookie)
+            elif autoscope:
+                self.report_warning(
+                    'The extractor result contains an unscoped cookie as an HTTP header. '
+                    'If you are specifying an input URL, ' + bug_reports_message(),
+                    only_once=True)
+                self._apply_header_cookies(autoscope, [prepared_cookie])
+            else:
+                self.report_unscoped_cookies()
+
+    def _load_cookies_from_headers(self, headers):
+        self._load_cookies(traverse_obj(headers, 'cookie', casesense=False))
+
+    def _apply_header_cookies(self, url, cookies=None):
+        """This method applies stray header cookies to the provided url
+
+        This loads header cookies and scopes them to the domain provided in `url`.
+        While this is not ideal, it helps reduce the risk of them being sent to
+        an unintended destination.
+        """
+        parsed = compat_urllib_parse.urlparse(url)
+        if not parsed.hostname:
+            return
+
+        for cookie in map(copy.copy, cookies or self._header_cookies):
+            cookie.domain = '.' + parsed.hostname
+            self.cookiejar.set_cookie(cookie)
+
     @__handle_extraction_exceptions
     def __extract_info(self, url, ie, download, extra_info, process):
+        # Compat with passing cookies in http headers
+        self._apply_header_cookies(url)
+
         ie_result = ie.extract(url)
         if ie_result is None:  # Finished already (backwards compatibility; listformats and friends should be moved here)
             return
@@ -862,7 +977,7 @@ class YoutubeDL(object):
 
     def process_ie_result(self, ie_result, download=True, extra_info={}):
         """
-        Take the result of the ie(may be modified) and resolve all unresolved
+        Take the result of the ie (may be modified) and resolve all unresolved
         references (URLs, playlist items).
 
         It will also download the videos if 'download'.
@@ -1389,17 +1504,16 @@ class YoutubeDL(object):
                         'abr': formats_info[1].get('abr'),
                         'ext': output_ext,
                     }
-                video_selector, audio_selector = map(_build_selector_function, selector.selector)
 
                 def selector_function(ctx):
-                    for pair in itertools.product(
-                            video_selector(copy.deepcopy(ctx)), audio_selector(copy.deepcopy(ctx))):
+                    selector_fn = lambda x: _build_selector_function(x)(ctx)
+                    for pair in itertools.product(*map(selector_fn, selector.selector)):
                         yield _merge(pair)
 
             filters = [self._build_format_filter(f) for f in selector.filters]
 
             def final_selector(ctx):
-                ctx_copy = copy.deepcopy(ctx)
+                ctx_copy = dict(ctx)
                 for _filter in filters:
                     ctx_copy['formats'] = list(filter(_filter, ctx_copy['formats']))
                 return selector_function(ctx_copy)
@@ -1434,23 +1548,45 @@ class YoutubeDL(object):
         parsed_selector = _parse_format_selection(iter(TokenIterator(tokens)))
         return _build_selector_function(parsed_selector)
 
-    def _calc_headers(self, info_dict):
-        res = std_headers.copy()
+    def _calc_headers(self, info_dict, load_cookies=False):
+        if load_cookies:  # For --load-info-json
+            # load cookies from http_headers in legacy info.json
+            self._load_cookies(traverse_obj(info_dict, ('http_headers', 'Cookie'), casesense=False),
+                               autoscope=info_dict['url'])
+            # load scoped cookies from info.json
+            self._load_cookies(info_dict.get('cookies'), autoscope=False)
 
-        add_headers = info_dict.get('http_headers')
-        if add_headers:
-            res.update(add_headers)
-
-        cookies = self._calc_cookies(info_dict)
+        cookies = self.cookiejar.get_cookies_for_url(info_dict['url'])
         if cookies:
-            res['Cookie'] = cookies
+            # Make a string like name1=val1; attr1=a_val1; ...name2=val2; ...
+            # By convention a cookie name can't be a well-known attribute name
+            # so this syntax is unambiguous and can be parsed by (eg) SimpleCookie
+            encoder = compat_http_cookies_SimpleCookie()
+            values = []
+            attributes = (('Domain', '='), ('Path', '='), ('Secure',), ('Expires', '='), ('Version', '='))
+            attributes = tuple([x[0].lower()] + list(x) for x in attributes)
+            for cookie in cookies:
+                _, value = encoder.value_encode(cookie.value)
+                # Py 2 '' --> '', Py 3 '' --> '""'
+                if value == '':
+                    value = '""'
+                values.append('='.join((cookie.name, value)))
+                for attr in attributes:
+                    value = getattr(cookie, attr[0], None)
+                    if value:
+                        values.append('%s%s' % (''.join(attr[1:]), value if len(attr) == 3 else ''))
+            info_dict['cookies'] = '; '.join(values)
+
+        res = std_headers.copy()
+        res.update(info_dict.get('http_headers') or {})
+        res = self._remove_cookie_header(res)
 
         if 'X-Forwarded-For' not in res:
             x_forwarded_for_ip = info_dict.get('__x_forwarded_for_ip')
             if x_forwarded_for_ip:
                 res['X-Forwarded-For'] = x_forwarded_for_ip
 
-        return res
+        return res or None
 
     def _calc_cookies(self, info_dict):
         pr = sanitized_Request(info_dict['url'])
@@ -1629,10 +1765,13 @@ class YoutubeDL(object):
                 format['protocol'] = determine_protocol(format)
             # Add HTTP headers, so that external programs can use them from the
             # json output
-            full_format_info = info_dict.copy()
-            full_format_info.update(format)
-            format['http_headers'] = self._calc_headers(full_format_info)
-        # Remove private housekeeping stuff
+            format['http_headers'] = self._calc_headers(ChainMap(format, info_dict), load_cookies=True)
+
+        # Safeguard against old/insecure infojson when using --load-info-json
+        info_dict['http_headers'] = self._remove_cookie_header(
+            info_dict.get('http_headers') or {}) or None
+
+        # Remove private housekeeping stuff (copied to http_headers in _calc_headers())
         if '__x_forwarded_for_ip' in info_dict:
             del info_dict['__x_forwarded_for_ip']
 
@@ -1775,7 +1914,7 @@ class YoutubeDL(object):
             self.to_stdout(formatSeconds(info_dict['duration']))
         print_mandatory('format')
         if self.params.get('forcejson', False):
-            self.to_stdout(json.dumps(info_dict))
+            self.to_stdout(json.dumps(self.sanitize_info(info_dict)))
 
     def process_info(self, info_dict):
         """Process a single resolved IE result."""
@@ -1835,7 +1974,7 @@ class YoutubeDL(object):
             else:
                 try:
                     self.to_screen('[info] Writing video description to: ' + descfn)
-                    with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
+                    with open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
                         descfile.write(info_dict['description'])
                 except (OSError, IOError):
                     self.report_error('Cannot write description file ' + descfn)
@@ -1850,7 +1989,7 @@ class YoutubeDL(object):
             else:
                 try:
                     self.to_screen('[info] Writing video annotations to: ' + annofn)
-                    with io.open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
+                    with open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
                         annofile.write(info_dict['annotations'])
                 except (KeyError, TypeError):
                     self.report_warning('There are no annotations to write.')
@@ -1877,7 +2016,7 @@ class YoutubeDL(object):
                         try:
                             # Use newline='' to prevent conversion of newline characters
                             # See https://github.com/ytdl-org/youtube-dl/issues/10268
-                            with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8', newline='') as subfile:
+                            with open(encodeFilename(sub_filename), 'w', encoding='utf-8', newline='') as subfile:
                                 subfile.write(sub_info['data'])
                         except (OSError, IOError):
                             self.report_error('Cannot write subtitles file ' + sub_filename)
@@ -1886,24 +2025,16 @@ class YoutubeDL(object):
                         try:
                             sub_data = ie._request_webpage(
                                 sub_info['url'], info_dict['id'], note=False).read()
-                            with io.open(encodeFilename(sub_filename), 'wb') as subfile:
+                            with open(encodeFilename(sub_filename), 'wb') as subfile:
                                 subfile.write(sub_data)
                         except (ExtractorError, IOError, OSError, ValueError) as err:
                             self.report_warning('Unable to download subtitle for "%s": %s' %
                                                 (sub_lang, error_to_compat_str(err)))
                             continue
 
-        if self.params.get('writeinfojson', False):
-            infofn = replace_extension(filename, 'info.json', info_dict.get('ext'))
-            if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(infofn)):
-                self.to_screen('[info] Video description metadata is already present')
-            else:
-                self.to_screen('[info] Writing video description metadata as JSON to: ' + infofn)
-                try:
-                    write_json_file(self.filter_requested_info(info_dict), infofn)
-                except (OSError, IOError):
-                    self.report_error('Cannot write metadata to JSON file ' + infofn)
-                    return
+        self._write_info_json(
+            'video description', info_dict,
+            replace_extension(filename, 'info.json', info_dict.get('ext')))
 
         self._write_thumbnails(info_dict, filename)
 
@@ -1924,7 +2055,11 @@ class YoutubeDL(object):
                         fd.add_progress_hook(ph)
                     if self.params.get('verbose'):
                         self.to_screen('[debug] Invoking downloader on %r' % info.get('url'))
-                    return fd.download(name, info)
+
+                    new_info = dict((k, v) for k, v in info.items() if not k.startswith('__p'))
+                    new_info['http_headers'] = self._calc_headers(new_info)
+
+                    return fd.download(name, new_info)
 
                 if info_dict.get('requested_formats') is not None:
                     downloaded = []
@@ -2089,16 +2224,13 @@ class YoutubeDL(object):
                 raise
             else:
                 if self.params.get('dump_single_json', False):
-                    self.to_stdout(json.dumps(res))
+                    self.to_stdout(json.dumps(self.sanitize_info(res)))
 
         return self._download_retcode
 
     def download_with_info_file(self, info_filename):
-        with contextlib.closing(fileinput.FileInput(
-                [info_filename], mode='r',
-                openhook=fileinput.hook_encoded('utf-8'))) as f:
-            # FileInput doesn't have a read method, we can't call json.load
-            info = self.filter_requested_info(json.loads('\n'.join(f)))
+        with open(info_filename, encoding='utf-8') as f:
+            info = self.filter_requested_info(json.load(f))
         try:
             self.process_ie_result(info, download=True)
         except DownloadError:
@@ -2111,10 +2243,36 @@ class YoutubeDL(object):
         return self._download_retcode
 
     @staticmethod
-    def filter_requested_info(info_dict):
-        return dict(
-            (k, v) for k, v in info_dict.items()
-            if k not in ['requested_formats', 'requested_subtitles'])
+    def sanitize_info(info_dict, remove_private_keys=False):
+        ''' Sanitize the infodict for converting to json '''
+        if info_dict is None:
+            return info_dict
+
+        if remove_private_keys:
+            reject = lambda k, v: (v is None
+                                   or k.startswith('__')
+                                   or k in ('requested_formats',
+                                            'requested_subtitles'))
+        else:
+            reject = lambda k, v: False
+
+        def filter_fn(obj):
+            if isinstance(obj, dict):
+                return dict((k, filter_fn(v)) for k, v in obj.items() if not reject(k, v))
+            elif isinstance(obj, (list, tuple, set, LazyList)):
+                return list(map(filter_fn, obj))
+            elif obj is None or any(isinstance(obj, c)
+                                    for c in (compat_integer_types,
+                                              (compat_str, float, bool))):
+                return obj
+            else:
+                return repr(obj)
+
+        return filter_fn(info_dict)
+
+    @classmethod
+    def filter_requested_info(cls, info_dict):
+        return cls.sanitize_info(info_dict, True)
 
     def post_process(self, filename, ie_info):
         """Run all the postprocessors on the given file."""
@@ -2300,27 +2458,6 @@ class YoutubeDL(object):
         """ Start an HTTP download """
         if isinstance(req, compat_basestring):
             req = sanitized_Request(req)
-        # an embedded /../ sequence is not automatically handled by urllib2
-        # see https://github.com/yt-dlp/yt-dlp/issues/3355
-        url = req.get_full_url()
-        parts = url.partition('/../')
-        if parts[1]:
-            url = compat_urllib_parse.urljoin(parts[0] + parts[1][:1], parts[1][1:] + parts[2])
-        if url:
-            # worse, URL path may have initial /../ against RFCs: work-around
-            # by stripping such prefixes, like eg Firefox
-            parts = compat_urllib_parse.urlsplit(url)
-            path = parts.path
-            while path.startswith('/../'):
-                path = path[3:]
-            url = parts._replace(path=path).geturl()
-            # get a new Request with the munged URL
-            if url != req.get_full_url():
-                req_type = {'HEAD': HEADRequest, 'PUT': PUTRequest}.get(
-                    req.get_method(), compat_urllib_request.Request)
-                req = req_type(
-                    url, data=req.data, headers=dict(req.header_items()),
-                    origin_req_host=req.origin_req_host, unverifiable=req.unverifiable)
         return self._opener.open(req, timeout=self._socket_timeout)
 
     def print_debug_header(self):
@@ -2342,9 +2479,12 @@ class YoutubeDL(object):
                 self.get_encoding()))
         write_string(encoding_str, encoding=None)
 
-        self._write_string('[debug] youtube-dl version ' + __version__ + '\n')
+        writeln_debug = lambda *s: self._write_string('[debug] %s\n' % (''.join(s), ))
+        writeln_debug('youtube-dl version ', __version__)
         if _LAZY_LOADER:
-            self._write_string('[debug] Lazy loading extractors enabled' + '\n')
+            writeln_debug('Lazy loading extractors enabled')
+        if ytdl_is_updateable():
+            writeln_debug('Single file build')
         try:
             sp = subprocess.Popen(
                 ['git', 'rev-parse', '--short', 'HEAD'],
@@ -2353,7 +2493,7 @@ class YoutubeDL(object):
             out, err = process_communicate_or_kill(sp)
             out = out.decode().strip()
             if re.match('[0-9a-f]+', out):
-                self._write_string('[debug] Git HEAD: ' + out + '\n')
+                writeln_debug('Git HEAD: ', out)
         except Exception:
             try:
                 sys.exc_clear()
@@ -2366,9 +2506,22 @@ class YoutubeDL(object):
                 return impl_name + ' version %d.%d.%d' % sys.pypy_version_info[:3]
             return impl_name
 
-        self._write_string('[debug] Python version %s (%s) - %s\n' % (
-            platform.python_version(), python_implementation(),
-            platform_name()))
+        def libc_ver():
+            try:
+                return platform.libc_ver()
+            except OSError:  # We may not have access to the executable
+                return []
+
+        libc = join_nonempty(*libc_ver(), delim=' ')
+        writeln_debug('Python %s (%s %s %s) - %s - %s%s' % (
+            platform.python_version(),
+            python_implementation(),
+            platform.machine(),
+            platform.architecture()[0],
+            platform_name(),
+            OPENSSL_VERSION,
+            (' - %s' % (libc, )) if libc else ''
+        ))
 
         exe_versions = FFmpegPostProcessor.get_versions(self)
         exe_versions['rtmpdump'] = rtmpdump_version()
@@ -2380,17 +2533,17 @@ class YoutubeDL(object):
         )
         if not exe_str:
             exe_str = 'none'
-        self._write_string('[debug] exe versions: %s\n' % exe_str)
+        writeln_debug('exe versions: %s' % (exe_str, ))
 
         proxy_map = {}
         for handler in self._opener.handlers:
             if hasattr(handler, 'proxies'):
                 proxy_map.update(handler.proxies)
-        self._write_string('[debug] Proxy map: ' + compat_str(proxy_map) + '\n')
+        writeln_debug('Proxy map: ', compat_str(proxy_map))
 
         if self.params.get('call_home', False):
             ipaddr = self.urlopen('https://yt-dl.org/ip').read().decode('utf-8')
-            self._write_string('[debug] Public IP address: %s\n' % ipaddr)
+            writeln_debug('Public IP address: %s' % (ipaddr, ))
             latest_version = self.urlopen(
                 'https://yt-dl.org/latest/version').read().decode('utf-8')
             if version_tuple(latest_version) > version_tuple(__version__):
@@ -2407,7 +2560,7 @@ class YoutubeDL(object):
         opts_proxy = self.params.get('proxy')
 
         if opts_cookiefile is None:
-            self.cookiejar = compat_cookiejar.CookieJar()
+            self.cookiejar = YoutubeDLCookieJar()
         else:
             opts_cookiefile = expand_path(opts_cookiefile)
             self.cookiejar = YoutubeDLCookieJar(opts_cookiefile)
@@ -2468,6 +2621,28 @@ class YoutubeDL(object):
             encoding = preferredencoding()
         return encoding
 
+    def _write_info_json(self, label, info_dict, infofn, overwrite=None):
+        if not self.params.get('writeinfojson', False):
+            return False
+
+        def msg(fmt, lbl):
+            return fmt % (lbl + ' metadata',)
+
+        if overwrite is None:
+            overwrite = not self.params.get('nooverwrites', False)
+
+        if not overwrite and os.path.exists(encodeFilename(infofn)):
+            self.to_screen(msg('[info] %s is already present', label.title()))
+            return 'exists'
+        else:
+            self.to_screen(msg('[info] Writing %s as JSON to: ' + infofn, label))
+            try:
+                write_json_file(self.filter_requested_info(info_dict), infofn)
+                return True
+            except (OSError, IOError):
+                self.report_error(msg('Cannot write %s to JSON file ' + infofn, label))
+                return
+
     def _write_thumbnails(self, info_dict, filename):
         if self.params.get('writethumbnail', False):
             thumbnails = info_dict.get('thumbnails')

youtube_dl/__init__.py

@@ -5,7 +5,6 @@ from __future__ import unicode_literals
 
 __license__ = 'Public Domain'
 
-import codecs
 import io
 import os
 import random
@@ -17,6 +16,7 @@ from .options import (
 )
 from .compat import (
     compat_getpass,
+    compat_register_utf8,
     compat_shlex_split,
     workaround_optparse_bug9161,
 )
@@ -46,10 +46,8 @@ from .YoutubeDL import YoutubeDL
 
 
 def _real_main(argv=None):
-    # Compatibility fixes for Windows
-    if sys.platform == 'win32':
-        # https://github.com/ytdl-org/youtube-dl/issues/820
-        codecs.register(lambda name: codecs.lookup('utf-8') if name == 'cp65001' else None)
+    # Compatibility fix for Windows
+    compat_register_utf8()
 
     workaround_optparse_bug9161()
 

youtube_dl/cache.py

@@ -1,14 +1,16 @@
 from __future__ import unicode_literals
 
 import errno
-import io
 import json
 import os
 import re
 import shutil
 import traceback
 
-from .compat import compat_getenv
+from .compat import (
+    compat_getenv,
+    compat_open as open,
+)
 from .utils import (
     error_to_compat_str,
     expand_path,
@@ -83,7 +85,7 @@ class Cache(object):
         cache_fn = self._get_cache_fn(section, key, dtype)
         try:
             try:
-                with io.open(cache_fn, 'r', encoding='utf-8') as cachef:
+                with open(cache_fn, 'r', encoding='utf-8') as cachef:
                     return self._validate(json.load(cachef), min_ver)
             except ValueError:
                 try:

youtube_dl/casefold.py

@@ -1663,5 +1663,5 @@ def casefold(s):
 
 
 __all__ = [
-    casefold
+    'casefold',
 ]

youtube_dl/compat.py

@@ -1,10 +1,12 @@
 # coding: utf-8
 from __future__ import unicode_literals
+from __future__ import division
 
 import base64
 import binascii
 import collections
 import ctypes
+import datetime
 import email
 import getpass
 import io
@@ -19,6 +21,7 @@ import socket
 import struct
 import subprocess
 import sys
+import types
 import xml.etree.ElementTree
 
 # naming convention
@@ -31,13 +34,17 @@ try:
     compat_str, compat_basestring, compat_chr = (
         unicode, basestring, unichr
     )
-    from .casefold import casefold as compat_casefold
-
 except NameError:
     compat_str, compat_basestring, compat_chr = (
-        str, str, chr
+        str, (str, bytes), chr
     )
+
+# casefold
+try:
+    compat_str.casefold
     compat_casefold = lambda s: s.casefold()
+except AttributeError:
+    from .casefold import casefold as compat_casefold
 
 try:
     import collections.abc as compat_collections_abc
@@ -49,6 +56,22 @@ try:
 except ImportError:  # Python 2
     import urllib2 as compat_urllib_request
 
+# Also fix up lack of method arg in old Pythons
+try:
+    _req = compat_urllib_request.Request
+    _req('http://127.0.0.1', method='GET')
+except TypeError:
+    class _request(object):
+        def __new__(cls, url, *args, **kwargs):
+            method = kwargs.pop('method', None)
+            r = _req(url, *args, **kwargs)
+            if method:
+                r.get_method = types.MethodType(lambda _: method, r)
+            return r
+
+    compat_urllib_request.Request = _request
+
+
 try:
     import urllib.error as compat_urllib_error
 except ImportError:  # Python 2
@@ -73,6 +96,12 @@ try:
 except ImportError:  # Python 2
     import urllib as compat_urllib_response
 
+try:
+    compat_urllib_response.addinfourl.status
+except AttributeError:
+    # .getcode() is deprecated in Py 3.
+    compat_urllib_response.addinfourl.status = property(lambda self: self.getcode())
+
 try:
     import http.cookiejar as compat_cookiejar
 except ImportError:  # Python 2
@@ -97,12 +126,24 @@ except ImportError:  # Python 2
     import Cookie as compat_cookies
 compat_http_cookies = compat_cookies
 
-if sys.version_info[0] == 2:
+if sys.version_info[0] == 2 or sys.version_info < (3, 3):
     class compat_cookies_SimpleCookie(compat_cookies.SimpleCookie):
         def load(self, rawdata):
-            if isinstance(rawdata, compat_str):
-                rawdata = str(rawdata)
-            return super(compat_cookies_SimpleCookie, self).load(rawdata)
+            must_have_value = 0
+            if not isinstance(rawdata, dict):
+                if sys.version_info[:2] != (2, 7) or sys.platform.startswith('java'):
+                    # attribute must have value for parsing
+                    rawdata, must_have_value = re.subn(
+                        r'(?i)(;\s*)(secure|httponly)(\s*(?:;|$))', r'\1\2=\2\3', rawdata)
+                if sys.version_info[0] == 2:
+                    if isinstance(rawdata, compat_str):
+                        rawdata = str(rawdata)
+            super(compat_cookies_SimpleCookie, self).load(rawdata)
+            if must_have_value > 0:
+                for morsel in self.values():
+                    for attr in ('secure', 'httponly'):
+                        if morsel.get(attr):
+                            morsel[attr] = True
 else:
     compat_cookies_SimpleCookie = compat_cookies.SimpleCookie
 compat_http_cookies_SimpleCookie = compat_cookies_SimpleCookie
@@ -2354,6 +2395,11 @@ try:
     import http.client as compat_http_client
 except ImportError:  # Python 2
     import httplib as compat_http_client
+try:
+    compat_http_client.HTTPResponse.getcode
+except AttributeError:
+    # Py < 3.1
+    compat_http_client.HTTPResponse.getcode = lambda self: self.status
 
 try:
     from urllib.error import HTTPError as compat_HTTPError
@@ -3127,6 +3173,46 @@ else:
         return ctypes.WINFUNCTYPE(*args, **kwargs)
 
 
+if sys.version_info < (3, 0):
+    # open(file, mode='r', buffering=- 1, encoding=None, errors=None, newline=None, closefd=True) not: opener=None
+    def compat_open(file_, *args, **kwargs):
+        if len(args) > 6 or 'opener' in kwargs:
+            raise ValueError('open: unsupported argument "opener"')
+        return io.open(file_, *args, **kwargs)
+else:
+    compat_open = open
+
+
+# compat_register_utf8
+def compat_register_utf8():
+    if sys.platform == 'win32':
+        # https://github.com/ytdl-org/youtube-dl/issues/820
+        from codecs import register, lookup
+        register(
+            lambda name: lookup('utf-8') if name == 'cp65001' else None)
+
+
+# compat_datetime_timedelta_total_seconds
+try:
+    compat_datetime_timedelta_total_seconds = datetime.timedelta.total_seconds
+except AttributeError:
+    # Py 2.6
+    def compat_datetime_timedelta_total_seconds(td):
+        return (td.microseconds + (td.seconds + td.days * 24 * 3600) * 10**6) / 10**6
+
+# optional decompression packages
+# PyPi brotli package implements 'br' Content-Encoding
+try:
+    import brotli as compat_brotli
+except ImportError:
+    compat_brotli = None
+# PyPi ncompress package implements 'compress' Content-Encoding
+try:
+    import ncompress as compat_ncompress
+except ImportError:
+    compat_ncompress = None
+
+
 legacy = [
     'compat_HTMLParseError',
     'compat_HTMLParser',
@@ -3160,10 +3246,12 @@ __all__ = [
     'compat_Struct',
     'compat_base64_b64decode',
     'compat_basestring',
+    'compat_brotli',
     'compat_casefold',
     'compat_chr',
     'compat_collections_abc',
     'compat_collections_chain_map',
+    'compat_datetime_timedelta_total_seconds',
     'compat_http_cookiejar',
     'compat_http_cookiejar_Cookie',
     'compat_http_cookies',
@@ -3184,7 +3272,9 @@ __all__ = [
     'compat_itertools_zip_longest',
     'compat_kwargs',
     'compat_map',
+    'compat_ncompress',
     'compat_numeric_types',
+    'compat_open',
     'compat_ord',
     'compat_os_name',
     'compat_os_path_expanduser',
@@ -3192,6 +3282,7 @@ __all__ = [
     'compat_print',
     'compat_re_Match',
     'compat_re_Pattern',
+    'compat_register_utf8',
     'compat_setenv',
     'compat_shlex_quote',
     'compat_shlex_split',

youtube_dl/downloader/common.py

@@ -96,7 +96,7 @@ class FileDownloader(object):
                 return None
             return int(float(remaining) / rate)
         start, now = (start_or_rate, now_or_remaining)
-        total, current = args
+        total, current = args[:2]
         if total is None:
             return None
         if now is None:
@@ -339,6 +339,10 @@ class FileDownloader(object):
     def download(self, filename, info_dict):
         """Download to a filename using the info from info_dict
         Return True on success and False otherwise
+
+        This method filters the `Cookie` header from the info_dict to prevent leaks.
+        Downloaders have their own way of handling cookies.
+        See: https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-v8mc-9377-rwjj
         """
 
         nooverwrites_and_exists = (

youtube_dl/downloader/dash.py

@@ -1,5 +1,7 @@
 from __future__ import unicode_literals
 
+import itertools
+
 from .fragment import FragmentFD
 from ..compat import compat_urllib_error
 from ..utils import (
@@ -30,25 +32,23 @@ class DashSegmentsFD(FragmentFD):
         fragment_retries = self.params.get('fragment_retries', 0)
         skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
 
-        frag_index = 0
-        for i, fragment in enumerate(fragments):
-            frag_index += 1
+        for frag_index, fragment in enumerate(fragments, 1):
             if frag_index <= ctx['fragment_index']:
                 continue
             # In DASH, the first segment contains necessary headers to
             # generate a valid MP4 file, so always abort for the first segment
-            fatal = i == 0 or not skip_unavailable_fragments
-            for count in range(fragment_retries + 1):
+            fatal = frag_index == 1 or not skip_unavailable_fragments
+            fragment_url = fragment.get('url')
+            if not fragment_url:
+                assert fragment_base_url
+                fragment_url = urljoin(fragment_base_url, fragment['path'])
+            success = False
+            for count in itertools.count():
                 try:
-                    fragment_url = fragment.get('url')
-                    if not fragment_url:
-                        assert fragment_base_url
-                        fragment_url = urljoin(fragment_base_url, fragment['path'])
                     success, frag_content = self._download_fragment(ctx, fragment_url, info_dict)
                     if not success:
                         return False
                     self._append_fragment(ctx, frag_content)
-                    break
                 except compat_urllib_error.HTTPError as err:
                     # YouTube may often return 404 HTTP error for a fragment causing the
                     # whole download to fail. However if the same fragment is immediately
@@ -58,19 +58,19 @@ class DashSegmentsFD(FragmentFD):
                     # HTTP error.
                     if count < fragment_retries:
                         self.report_retry_fragment(err, frag_index, count + 1, fragment_retries)
+                        continue
                 except DownloadError:
                     # Don't retry fragment if error occurred during HTTP downloading
-                    # itself since it has own retry settings
-                    if not fatal:
-                        self.report_skip_fragment(frag_index)
-                        break
-                    raise
+                    # itself since it has its own retry settings
+                    if fatal:
+                        raise
+                break
 
-            if count >= fragment_retries:
+            if not success:
                 if not fatal:
                     self.report_skip_fragment(frag_index)
                     continue
-                self.report_error('giving up after %s fragment retries' % fragment_retries)
+                self.report_error('giving up after %s fragment retries' % count)
                 return False
 
         self._finish_frag_download(ctx)

youtube_dl/downloader/external.py

@@ -1,9 +1,10 @@
 from __future__ import unicode_literals
 
-import os.path
+import os
 import re
 import subprocess
 import sys
+import tempfile
 import time
 
 from .common import FileDownloader
@@ -23,6 +24,8 @@ from ..utils import (
     check_executable,
     is_outdated_version,
     process_communicate_or_kill,
+    T,
+    traverse_obj,
 )
 
 
@@ -30,6 +33,7 @@ class ExternalFD(FileDownloader):
     def real_download(self, filename, info_dict):
         self.report_destination(filename)
         tmpfilename = self.temp_name(filename)
+        self._cookies_tempfile = None
 
         try:
             started = time.time()
@@ -42,6 +46,13 @@ class ExternalFD(FileDownloader):
             # should take place
             retval = 0
             self.to_screen('[%s] Interrupted by user' % self.get_basename())
+        finally:
+            if self._cookies_tempfile and os.path.isfile(self._cookies_tempfile):
+                try:
+                    os.remove(self._cookies_tempfile)
+                except OSError:
+                    self.report_warning(
+                        'Unable to delete temporary cookies file "{0}"'.format(self._cookies_tempfile))
 
         if retval == 0:
             status = {
@@ -97,6 +108,16 @@ class ExternalFD(FileDownloader):
     def _configuration_args(self, default=[]):
         return cli_configuration_args(self.params, 'external_downloader_args', default)
 
+    def _write_cookies(self):
+        if not self.ydl.cookiejar.filename:
+            tmp_cookies = tempfile.NamedTemporaryFile(suffix='.cookies', delete=False)
+            tmp_cookies.close()
+            self._cookies_tempfile = tmp_cookies.name
+            self.to_screen('[download] Writing temporary cookies file to "{0}"'.format(self._cookies_tempfile))
+        # real_download resets _cookies_tempfile; if it's None, save() will write to cookiejar.filename
+        self.ydl.cookiejar.save(self._cookies_tempfile, ignore_discard=True, ignore_expires=True)
+        return self.ydl.cookiejar.filename or self._cookies_tempfile
+
     def _call_downloader(self, tmpfilename, info_dict):
         """ Either overwrite this or implement _make_cmd """
         cmd = [encodeArgument(a) for a in self._make_cmd(tmpfilename, info_dict)]
@@ -110,13 +131,21 @@ class ExternalFD(FileDownloader):
             self.to_stderr(stderr.decode('utf-8', 'replace'))
         return p.returncode
 
+    @staticmethod
+    def _header_items(info_dict):
+        return traverse_obj(
+            info_dict, ('http_headers', T(dict.items), Ellipsis))
+
 
 class CurlFD(ExternalFD):
     AVAILABLE_OPT = '-V'
 
     def _make_cmd(self, tmpfilename, info_dict):
-        cmd = [self.exe, '--location', '-o', tmpfilename]
-        for key, val in info_dict['http_headers'].items():
+        cmd = [self.exe, '--location', '-o', tmpfilename, '--compressed']
+        cookie_header = self.ydl.cookiejar.get_cookie_header(info_dict['url'])
+        if cookie_header:
+            cmd += ['--cookie', cookie_header]
+        for key, val in self._header_items(info_dict):
             cmd += ['--header', '%s: %s' % (key, val)]
         cmd += self._bool_option('--continue-at', 'continuedl', '-', '0')
         cmd += self._valueless_option('--silent', 'noprogress')
@@ -151,8 +180,11 @@ class AxelFD(ExternalFD):
 
     def _make_cmd(self, tmpfilename, info_dict):
         cmd = [self.exe, '-o', tmpfilename]
-        for key, val in info_dict['http_headers'].items():
+        for key, val in self._header_items(info_dict):
             cmd += ['-H', '%s: %s' % (key, val)]
+        cookie_header = self.ydl.cookiejar.get_cookie_header(info_dict['url'])
+        if cookie_header:
+            cmd += ['-H', 'Cookie: {0}'.format(cookie_header), '--max-redirect=0']
         cmd += self._configuration_args()
         cmd += ['--', info_dict['url']]
         return cmd
@@ -162,8 +194,10 @@ class WgetFD(ExternalFD):
     AVAILABLE_OPT = '--version'
 
     def _make_cmd(self, tmpfilename, info_dict):
-        cmd = [self.exe, '-O', tmpfilename, '-nv', '--no-cookies']
-        for key, val in info_dict['http_headers'].items():
+        cmd = [self.exe, '-O', tmpfilename, '-nv', '--compression=auto']
+        if self.ydl.cookiejar.get_cookie_header(info_dict['url']):
+            cmd += ['--load-cookies', self._write_cookies()]
+        for key, val in self._header_items(info_dict):
             cmd += ['--header', '%s: %s' % (key, val)]
         cmd += self._option('--limit-rate', 'ratelimit')
         retry = self._option('--tries', 'retries')
@@ -182,21 +216,58 @@ class WgetFD(ExternalFD):
 class Aria2cFD(ExternalFD):
     AVAILABLE_OPT = '-v'
 
+    @staticmethod
+    def _aria2c_filename(fn):
+        return fn if os.path.isabs(fn) else os.path.join('.', fn)
+
     def _make_cmd(self, tmpfilename, info_dict):
-        cmd = [self.exe, '-c']
-        cmd += self._configuration_args([
-            '--min-split-size', '1M', '--max-connection-per-server', '4'])
-        dn = os.path.dirname(tmpfilename)
-        if dn:
-            cmd += ['--dir', dn]
-        cmd += ['--out', os.path.basename(tmpfilename)]
-        for key, val in info_dict['http_headers'].items():
+        cmd = [self.exe, '-c',
+               '--console-log-level=warn', '--summary-interval=0', '--download-result=hide',
+               '--http-accept-gzip=true', '--file-allocation=none', '-x16', '-j16', '-s16']
+        if 'fragments' in info_dict:
+            cmd += ['--allow-overwrite=true', '--allow-piece-length-change=true']
+        else:
+            cmd += ['--min-split-size', '1M']
+
+        if self.ydl.cookiejar.get_cookie_header(info_dict['url']):
+            cmd += ['--load-cookies={0}'.format(self._write_cookies())]
+        for key, val in self._header_items(info_dict):
             cmd += ['--header', '%s: %s' % (key, val)]
+        cmd += self._configuration_args(['--max-connection-per-server', '4'])
+        cmd += ['--out', os.path.basename(tmpfilename)]
+        cmd += self._option('--max-overall-download-limit', 'ratelimit')
         cmd += self._option('--interface', 'source_address')
         cmd += self._option('--all-proxy', 'proxy')
         cmd += self._bool_option('--check-certificate', 'nocheckcertificate', 'false', 'true', '=')
         cmd += self._bool_option('--remote-time', 'updatetime', 'true', 'false', '=')
-        cmd += ['--', info_dict['url']]
+        cmd += self._bool_option('--show-console-readout', 'noprogress', 'false', 'true', '=')
+        cmd += self._configuration_args()
+
+        # aria2c strips out spaces from the beginning/end of filenames and paths.
+        # We work around this issue by adding a "./" to the beginning of the
+        # filename and relative path, and adding a "/" at the end of the path.
+        # See: https://github.com/yt-dlp/yt-dlp/issues/276
+        # https://github.com/ytdl-org/youtube-dl/issues/20312
+        # https://github.com/aria2/aria2/issues/1373
+        dn = os.path.dirname(tmpfilename)
+        if dn:
+            cmd += ['--dir', self._aria2c_filename(dn) + os.path.sep]
+        if 'fragments' not in info_dict:
+            cmd += ['--out', self._aria2c_filename(os.path.basename(tmpfilename))]
+        cmd += ['--auto-file-renaming=false']
+        if 'fragments' in info_dict:
+            cmd += ['--file-allocation=none', '--uri-selector=inorder']
+            url_list_file = '%s.frag.urls' % (tmpfilename, )
+            url_list = []
+            for frag_index, fragment in enumerate(info_dict['fragments']):
+                fragment_filename = '%s-Frag%d' % (os.path.basename(tmpfilename), frag_index)
+                url_list.append('%s\n\tout=%s' % (fragment['url'], self._aria2c_filename(fragment_filename)))
+            stream, _ = self.sanitize_open(url_list_file, 'wb')
+            stream.write('\n'.join(url_list).encode())
+            stream.close()
+            cmd += ['-i', self._aria2c_filename(url_list_file)]
+        else:
+            cmd += ['--', info_dict['url']]
         return cmd
 
 
@@ -235,8 +306,10 @@ class Aria2pFD(ExternalFD):
         }
         options['dir'] = os.path.dirname(tmpfilename) or os.path.abspath('.')
         options['out'] = os.path.basename(tmpfilename)
+        if self.ydl.cookiejar.get_cookie_header(info_dict['url']):
+            options['load-cookies'] = self._write_cookies()
         options['header'] = []
-        for key, val in info_dict['http_headers'].items():
+        for key, val in self._header_items(info_dict):
             options['header'].append('{0}: {1}'.format(key, val))
         download = aria2.add_uris([info_dict['url']], options)
         status = {
@@ -265,8 +338,16 @@ class HttpieFD(ExternalFD):
 
     def _make_cmd(self, tmpfilename, info_dict):
         cmd = ['http', '--download', '--output', tmpfilename, info_dict['url']]
-        for key, val in info_dict['http_headers'].items():
+        for key, val in self._header_items(info_dict):
             cmd += ['%s:%s' % (key, val)]
+
+        # httpie 3.1.0+ removes the Cookie header on redirect, so this should be safe for now. [1]
+        # If we ever need cookie handling for redirects, we can export the cookiejar into a session. [2]
+        # 1: https://github.com/httpie/httpie/security/advisories/GHSA-9w4w-cpc8-h2fq
+        # 2: https://httpie.io/docs/cli/sessions
+        cookie_header = self.ydl.cookiejar.get_cookie_header(info_dict['url'])
+        if cookie_header:
+            cmd += ['Cookie:%s' % cookie_header]
         return cmd
 
 
@@ -312,7 +393,14 @@ class FFmpegFD(ExternalFD):
         # if end_time:
         #     args += ['-t', compat_str(end_time - start_time)]
 
-        if info_dict['http_headers'] and re.match(r'^https?://', url):
+        cookies = self.ydl.cookiejar.get_cookies_for_url(url)
+        if cookies:
+            args.extend(['-cookies', ''.join(
+                '{0}={1}; path={2}; domain={3};\r\n'.format(
+                    cookie.name, cookie.value, cookie.path, cookie.domain)
+                for cookie in cookies)])
+
+        if info_dict.get('http_headers') and re.match(r'^https?://', url):
             # Trailing \r\n after each HTTP header is important to prevent warning from ffmpeg/avconv:
             # [http @ 00000000003d2fa0] No trailing CRLF found in HTTP header.
             headers = handle_youtubedl_headers(info_dict['http_headers'])

youtube_dl/downloader/http.py

@@ -141,7 +141,8 @@ class HttpFD(FileDownloader):
                     # Content-Range is either not present or invalid. Assuming remote webserver is
                     # trying to send the whole file, resume is not possible, so wiping the local file
                     # and performing entire redownload
-                    self.report_unable_to_resume()
+                    if range_start > 0:
+                        self.report_unable_to_resume()
                     ctx.resume_len = 0
                     ctx.open_mode = 'wb'
                 ctx.data_len = int_or_none(ctx.data.info().get('Content-length', None))
@@ -293,7 +294,7 @@ class HttpFD(FileDownloader):
 
                 # Progress message
                 speed = self.calc_speed(start, now, byte_counter - ctx.resume_len)
-                eta = self.calc_eta(speed, ctx.data_len and (ctx.data_len - ctx.resume_len))
+                eta = self.calc_eta(speed, ctx.data_len and (ctx.data_len - byte_counter))
 
                 self._hook_progress({
                     'status': 'downloading',

youtube_dl/extractor/clipchamp.py

@@ -0,0 +1,69 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..compat import compat_str
+from ..utils import (
+    ExtractorError,
+    merge_dicts,
+    T,
+    traverse_obj,
+    unified_timestamp,
+    url_or_none,
+)
+
+
+class ClipchampIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?clipchamp\.com/watch/(?P<id>[\w-]+)'
+    _TESTS = [{
+        'url': 'https://clipchamp.com/watch/gRXZ4ZhdDaU',
+        'info_dict': {
+            'id': 'gRXZ4ZhdDaU',
+            'ext': 'mp4',
+            'title': 'Untitled video',
+            'uploader': 'Alexander Schwartz',
+            'timestamp': 1680805580,
+            'upload_date': '20230406',
+            'thumbnail': r're:^https?://.+\.jpg',
+        },
+        'params': {
+            'skip_download': 'm3u8',
+            'format': 'bestvideo',
+        },
+    }]
+
+    _STREAM_URL_TMPL = 'https://%s.cloudflarestream.com/%s/manifest/video.%s'
+    _STREAM_URL_QUERY = {'parentOrigin': 'https://clipchamp.com'}
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+        data = self._search_nextjs_data(webpage, video_id)['props']['pageProps']['video']
+
+        storage_location = data.get('storage_location')
+        if storage_location != 'cf_stream':
+            raise ExtractorError('Unsupported clip storage location "%s"' % (storage_location,))
+
+        path = data['download_url']
+        iframe = self._download_webpage(
+            'https://iframe.cloudflarestream.com/' + path, video_id, 'Downloading player iframe')
+        subdomain = self._search_regex(
+            r'''\bcustomer-domain-prefix\s*=\s*("|')(?P<sd>[\w-]+)\1''', iframe,
+            'subdomain', group='sd', fatal=False) or 'customer-2ut9yn3y6fta1yxe'
+
+        formats = self._extract_mpd_formats(
+            self._STREAM_URL_TMPL % (subdomain, path, 'mpd'), video_id,
+            query=self._STREAM_URL_QUERY, fatal=False, mpd_id='dash')
+        formats.extend(self._extract_m3u8_formats(
+            self._STREAM_URL_TMPL % (subdomain, path, 'm3u8'), video_id, 'mp4',
+            query=self._STREAM_URL_QUERY, fatal=False, m3u8_id='hls'))
+
+        return merge_dicts({
+            'id': video_id,
+            'formats': formats,
+            'uploader': ' '.join(traverse_obj(data, ('creator', ('first_name', 'last_name'), T(compat_str)))) or None,
+        }, traverse_obj(data, {
+            'title': ('project', 'project_name', T(compat_str)),
+            'timestamp': ('created_at', T(unified_timestamp)),
+            'thumbnail': ('thumbnail_url', T(url_or_none)),
+        }), rev=True)

youtube_dl/extractor/common.py

@@ -3,6 +3,7 @@ from __future__ import unicode_literals
 
 import base64
 import datetime
+import functools
 import hashlib
 import json
 import netrc
@@ -23,6 +24,8 @@ from ..compat import (
     compat_getpass,
     compat_integer_types,
     compat_http_client,
+    compat_map as map,
+    compat_open as open,
     compat_os_name,
     compat_str,
     compat_urllib_error,
@@ -31,6 +34,7 @@ from ..compat import (
     compat_urllib_request,
     compat_urlparse,
     compat_xml_parse_error,
+    compat_zip as zip,
 )
 from ..downloader.f4m import (
     get_base_url,
@@ -70,6 +74,7 @@ from ..utils import (
     str_or_none,
     str_to_int,
     strip_or_none,
+    traverse_obj,
     try_get,
     unescapeHTML,
     unified_strdate,
@@ -79,6 +84,7 @@ from ..utils import (
     urljoin,
     url_basename,
     url_or_none,
+    variadic,
     xpath_element,
     xpath_text,
     xpath_with_ns,
@@ -367,9 +373,22 @@ class InfoExtractor(object):
     title, description etc.
 
 
-    Subclasses of this one should re-define the _real_initialize() and
-    _real_extract() methods and define a _VALID_URL regexp.
-    Probably, they should also be added to the list of extractors.
+    A subclass of InfoExtractor must be defined to handle each specific site (or
+    several sites). Such a concrete subclass should be added to the list of
+    extractors. It should also:
+    * define its _VALID_URL attribute as a regexp, or a Sequence of alternative
+      regexps (but see below)
+    * re-define the _real_extract() method
+    * optionally re-define the _real_initialize() method.
+
+    An extractor subclass may also override suitable() if necessary, but the
+    function signature must be preserved and the function must import everything
+    it needs (except other extractors), so that lazy_extractors works correctly.
+    If the subclass's suitable() and _real_extract() functions avoid using
+    _VALID_URL, the subclass need not set that class attribute.
+
+    An abstract subclass of InfoExtractor may be used to simplify implementation
+    within an extractor module; it should not be added to the list of extractors.
 
     _GEO_BYPASS attribute may be set to False in order to disable
     geo restriction bypass mechanisms for a particular extractor.
@@ -404,22 +423,33 @@ class InfoExtractor(object):
         self._x_forwarded_for_ip = None
         self.set_downloader(downloader)
 
+    @classmethod
+    def __match_valid_url(cls, url):
+        # This does not use has/getattr intentionally - we want to know whether
+        # we have cached the regexp for cls, whereas getattr would also
+        # match its superclass
+        if '_VALID_URL_RE' not in cls.__dict__:
+            # _VALID_URL can now be a list/tuple of patterns
+            cls._VALID_URL_RE = tuple(map(re.compile, variadic(cls._VALID_URL)))
+        # 20% faster than next(filter(None, (p.match(url) for p in cls._VALID_URL_RE)), None) in 2.7
+        for p in cls._VALID_URL_RE:
+            p = p.match(url)
+            if p:
+                return p
+
+    # The public alias can safely be overridden, as in some back-ports
+    _match_valid_url = __match_valid_url
+
     @classmethod
     def suitable(cls, url):
         """Receives a URL and returns True if suitable for this IE."""
-
-        # This does not use has/getattr intentionally - we want to know whether
-        # we have cached the regexp for *this* class, whereas getattr would also
-        # match the superclass
-        if '_VALID_URL_RE' not in cls.__dict__:
-            cls._VALID_URL_RE = re.compile(cls._VALID_URL)
-        return cls._VALID_URL_RE.match(url) is not None
+        # This function must import everything it needs (except other extractors),
+        # so that lazy_extractors works correctly
+        return cls.__match_valid_url(url) is not None
 
     @classmethod
     def _match_id(cls, url):
-        if '_VALID_URL_RE' not in cls.__dict__:
-            cls._VALID_URL_RE = re.compile(cls._VALID_URL)
-        m = cls._VALID_URL_RE.match(url)
+        m = cls.__match_valid_url(url)
         assert m
         return compat_str(m.group('id'))
 
@@ -1005,6 +1035,8 @@ class InfoExtractor(object):
             if group is None:
                 # return the first matching group
                 return next(g for g in mobj.groups() if g is not None)
+            elif isinstance(group, (list, tuple)):
+                return tuple(mobj.group(g) for g in group)
             else:
                 return mobj.group(group)
         elif default is not NO_DEFAULT:
@@ -1020,10 +1052,9 @@ class InfoExtractor(object):
         Like _search_regex, but strips HTML tags and unescapes entities.
         """
         res = self._search_regex(pattern, string, name, default, fatal, flags, group)
-        if res:
-            return clean_html(res).strip()
-        else:
-            return res
+        if isinstance(res, tuple):
+            return tuple(map(clean_html, res))
+        return clean_html(res)
 
     def _get_netrc_login_info(self, netrc_machine=None):
         username = None
@@ -1348,6 +1379,44 @@ class InfoExtractor(object):
                     break
         return dict((k, v) for k, v in info.items() if v is not None)
 
+    def _search_nextjs_data(self, webpage, video_id, **kw):
+        nkw = dict((k, v) for k, v in kw.items() if k in ('transform_source', 'fatal'))
+        kw.pop('transform_source', None)
+        next_data = self._search_regex(
+            r'''<script[^>]+\bid\s*=\s*('|")__NEXT_DATA__\1[^>]*>(?P<nd>[^<]+)</script>''',
+            webpage, 'next.js data', group='nd', **kw)
+        if not next_data:
+            return {}
+        return self._parse_json(next_data, video_id, **nkw)
+
+    def _search_nuxt_data(self, webpage, video_id, *args, **kwargs):
+        """Parses Nuxt.js metadata. This works as long as the function __NUXT__ invokes is a pure function"""
+
+        # self, webpage, video_id, context_name='__NUXT__', *, fatal=True, traverse=('data', 0)
+        context_name = args[0] if len(args) > 0 else kwargs.get('context_name', '__NUXT__')
+        fatal = kwargs.get('fatal', True)
+        traverse = kwargs.get('traverse', ('data', 0))
+
+        re_ctx = re.escape(context_name)
+
+        FUNCTION_RE = (r'\(\s*function\s*\((?P<arg_keys>[\s\S]*?)\)\s*\{\s*'
+                       r'return\s+(?P<js>\{[\s\S]*?})\s*;?\s*}\s*\((?P<arg_vals>[\s\S]*?)\)')
+
+        js, arg_keys, arg_vals = self._search_regex(
+            (p.format(re_ctx, FUNCTION_RE) for p in
+             (r'<script>\s*window\s*\.\s*{0}\s*=\s*{1}\s*\)\s*;?\s*</script>',
+              r'{0}\s*\([\s\S]*?{1}')),
+            webpage, context_name, group=('js', 'arg_keys', 'arg_vals'),
+            default=NO_DEFAULT if fatal else (None, None, None))
+        if js is None:
+            return {}
+
+        args = dict(zip(arg_keys.split(','), map(json.dumps, self._parse_json(
+            '[{0}]'.format(arg_vals), video_id, transform_source=js_to_json, fatal=fatal) or ())))
+
+        ret = self._parse_json(js, video_id, transform_source=functools.partial(js_to_json, vars=args), fatal=fatal)
+        return traverse_obj(ret, traverse) or {}
+
     @staticmethod
     def _hidden_inputs(html):
         html = re.sub(r'<!--(?:(?!<!--).)*-->', '', html)
@@ -2495,7 +2564,8 @@ class InfoExtractor(object):
                 return f
             return {}
 
-        def _media_formats(src, cur_media_type, type_info={}):
+        def _media_formats(src, cur_media_type, type_info=None):
+            type_info = type_info or {}
             full_url = absolute_url(src)
             ext = type_info.get('ext') or determine_ext(full_url)
             if ext == 'm3u8':
@@ -2513,6 +2583,7 @@ class InfoExtractor(object):
                 formats = [{
                     'url': full_url,
                     'vcodec': 'none' if cur_media_type == 'audio' else None,
+                    'ext': ext,
                 }]
             return is_plain_url, formats
 
@@ -2521,7 +2592,7 @@ class InfoExtractor(object):
         # so we wll include them right here (see
         # https://www.ampproject.org/docs/reference/components/amp-video)
         # For dl8-* tags see https://delight-vr.com/documentation/dl8-video/
-        _MEDIA_TAG_NAME_RE = r'(?:(?:amp|dl8(?:-live)?)-)?(video|audio)'
+        _MEDIA_TAG_NAME_RE = r'(?:(?:amp|dl8(?:-live)?)-)?(video(?:-js)?|audio)'
         media_tags = [(media_tag, media_tag_name, media_type, '')
                       for media_tag, media_tag_name, media_type
                       in re.findall(r'(?s)(<(%s)[^>]*/>)' % _MEDIA_TAG_NAME_RE, webpage)]
@@ -2539,7 +2610,8 @@ class InfoExtractor(object):
             media_attributes = extract_attributes(media_tag)
             src = strip_or_none(media_attributes.get('src'))
             if src:
-                _, formats = _media_formats(src, media_type)
+                f = parse_content_type(media_attributes.get('type'))
+                _, formats = _media_formats(src, media_type, f)
                 media_info['formats'].extend(formats)
             media_info['thumbnail'] = absolute_url(media_attributes.get('poster'))
             if media_content:

youtube_dl/extractor/dlf.py

@@ -0,0 +1,204 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..compat import (
+    compat_str,
+)
+from ..utils import (
+    determine_ext,
+    extract_attributes,
+    int_or_none,
+    merge_dicts,
+    traverse_obj,
+    url_or_none,
+    variadic,
+)
+
+
+class DLFBaseIE(InfoExtractor):
+    _VALID_URL_BASE = r'https?://(?:www\.)?deutschlandfunk\.de/'
+    _BUTTON_REGEX = r'(<button[^>]+alt="Anhören"[^>]+data-audio-diraid[^>]*>)'
+
+    def _parse_button_attrs(self, button, audio_id=None):
+        attrs = extract_attributes(button)
+        audio_id = audio_id or attrs['data-audio-diraid']
+
+        url = traverse_obj(
+            attrs, 'data-audio-download-src', 'data-audio', 'data-audioreference',
+            'data-audio-src', expected_type=url_or_none)
+        ext = determine_ext(url)
+        formats = (self._extract_m3u8_formats(url, audio_id, fatal=False)
+                   if ext == 'm3u8' else [{'url': url, 'ext': ext, 'vcodec': 'none'}])
+        self._sort_formats(formats)
+
+        def traverse_attrs(path):
+            path = list(variadic(path))
+            t = path.pop() if callable(path[-1]) else None
+            return traverse_obj(attrs, path, expected_type=t, get_all=False)
+
+        def txt_or_none(v, default=None):
+            return default if v is None else (compat_str(v).strip() or default)
+
+        return merge_dicts(*reversed([{
+            'id': audio_id,
+            # 'extractor_key': DLFIE.ie_key(),
+            # 'extractor': DLFIE.IE_NAME,
+            'formats': formats,
+        }, dict((k, traverse_attrs(v)) for k, v in {
+            'title': (('data-audiotitle', 'data-audio-title', 'data-audio-download-tracking-title'), txt_or_none),
+            'duration': (('data-audioduration', 'data-audio-duration'), int_or_none),
+            'thumbnail': ('data-audioimage', url_or_none),
+            'uploader': 'data-audio-producer',
+            'series': 'data-audio-series',
+            'channel': 'data-audio-origin-site-name',
+            'webpage_url': ('data-audio-download-tracking-path', url_or_none),
+        }.items())]))
+
+
+class DLFIE(DLFBaseIE):
+    IE_NAME = 'dlf'
+    _VALID_URL = DLFBaseIE._VALID_URL_BASE + r'[\w-]+-dlf-(?P<id>[\da-f]{8})-100\.html'
+    _TESTS = [
+        # Audio as an HLS stream
+        {
+            'url': 'https://www.deutschlandfunk.de/tanz-der-saiteninstrumente-das-wild-strings-trio-aus-slowenien-dlf-03a3eb19-100.html',
+            'info_dict': {
+                'id': '03a3eb19',
+                'title': r're:Tanz der Saiteninstrumente [-/] Das Wild Strings Trio aus Slowenien',
+                'ext': 'm4a',
+                'duration': 3298,
+                'thumbnail': 'https://assets.deutschlandfunk.de/FALLBACK-IMAGE-AUDIO/512x512.png?t=1603714364673',
+                'uploader': 'Deutschlandfunk',
+                'series': 'On Stage',
+                'channel': 'deutschlandfunk'
+            },
+            'params': {
+                'skip_download': 'm3u8'
+            },
+            'skip': 'This webpage no longer exists'
+        }, {
+            'url': 'https://www.deutschlandfunk.de/russische-athleten-kehren-zurueck-auf-die-sportbuehne-ein-gefaehrlicher-tueroeffner-dlf-d9cc1856-100.html',
+            'info_dict': {
+                'id': 'd9cc1856',
+                'title': 'Russische Athleten kehren zurück auf die Sportbühne: Ein gefährlicher Türöffner',
+                'ext': 'mp3',
+                'duration': 291,
+                'thumbnail': 'https://assets.deutschlandfunk.de/FALLBACK-IMAGE-AUDIO/512x512.png?t=1603714364673',
+                'uploader': 'Deutschlandfunk',
+                'series': 'Kommentare und Themen der Woche',
+                'channel': 'deutschlandfunk'
+            }
+        },
+    ]
+
+    def _real_extract(self, url):
+        audio_id = self._match_id(url)
+        webpage = self._download_webpage(url, audio_id)
+
+        return self._parse_button_attrs(
+            self._search_regex(self._BUTTON_REGEX, webpage, 'button'), audio_id)
+
+
+class DLFCorpusIE(DLFBaseIE):
+    IE_NAME = 'dlf:corpus'
+    IE_DESC = 'DLF Multi-feed Archives'
+    _VALID_URL = DLFBaseIE._VALID_URL_BASE + r'(?P<id>(?![\w-]+-dlf-[\da-f]{8})[\w-]+-\d+)\.html'
+    _TESTS = [
+        # Recorded news broadcast with referrals to related broadcasts
+        {
+            'url': 'https://www.deutschlandfunk.de/fechten-russland-belarus-ukraine-protest-100.html',
+            'info_dict': {
+                'id': 'fechten-russland-belarus-ukraine-protest-100',
+                'title': r're:Wiederzulassung als neutrale Athleten [-/] Was die Rückkehr russischer und belarussischer Sportler beim Fechten bedeutet',
+                'description': 'md5:91340aab29c71aa7518ad5be13d1e8ad'
+            },
+            'playlist_mincount': 5,
+            'playlist': [{
+                'info_dict': {
+                    'id': '1fc5d64a',
+                    'title': r're:Wiederzulassung als neutrale Athleten [-/] Was die Rückkehr russischer und belarussischer Sportler beim Fechten bedeutet',
+                    'ext': 'mp3',
+                    'duration': 252,
+                    'thumbnail': 'https://assets.deutschlandfunk.de/aad16241-6b76-4a09-958b-96d0ee1d6f57/512x512.jpg?t=1679480020313',
+                    'uploader': 'Deutschlandfunk',
+                    'series': 'Sport',
+                    'channel': 'deutschlandfunk'
+                }
+            }, {
+                'info_dict': {
+                    'id': '2ada145f',
+                    'title': r're:(?:Sportpolitik / )?Fechtverband votiert für Rückkehr russischer Athleten',
+                    'ext': 'mp3',
+                    'duration': 336,
+                    'thumbnail': 'https://assets.deutschlandfunk.de/FILE_93982766f7317df30409b8a184ac044a/512x512.jpg?t=1678547581005',
+                    'uploader': 'Deutschlandfunk',
+                    'series': 'Deutschlandfunk Nova',
+                    'channel': 'deutschlandfunk-nova'
+                }
+            }, {
+                'info_dict': {
+                    'id': '5e55e8c9',
+                    'title': r're:Wiederzulassung von Russland und Belarus [-/] "Herumlavieren" des Fechter-Bundes sorgt für Unverständnis',
+                    'ext': 'mp3',
+                    'duration': 187,
+                    'thumbnail': 'https://assets.deutschlandfunk.de/a595989d-1ed1-4a2e-8370-b64d7f11d757/512x512.jpg?t=1679173825412',
+                    'uploader': 'Deutschlandfunk',
+                    'series': 'Sport am Samstag',
+                    'channel': 'deutschlandfunk'
+                }
+            }, {
+                'info_dict': {
+                    'id': '47e1a096',
+                    'title': r're:Rückkehr Russlands im Fechten [-/] "Fassungslos, dass es einfach so passiert ist"',
+                    'ext': 'mp3',
+                    'duration': 602,
+                    'thumbnail': 'https://assets.deutschlandfunk.de/da4c494a-21cc-48b4-9cc7-40e09fd442c2/512x512.jpg?t=1678562155770',
+                    'uploader': 'Deutschlandfunk',
+                    'series': 'Sport am Samstag',
+                    'channel': 'deutschlandfunk'
+                }
+            }, {
+                'info_dict': {
+                    'id': '5e55e8c9',
+                    'title': r're:Wiederzulassung von Russland und Belarus [-/] "Herumlavieren" des Fechter-Bundes sorgt für Unverständnis',
+                    'ext': 'mp3',
+                    'duration': 187,
+                    'thumbnail': 'https://assets.deutschlandfunk.de/a595989d-1ed1-4a2e-8370-b64d7f11d757/512x512.jpg?t=1679173825412',
+                    'uploader': 'Deutschlandfunk',
+                    'series': 'Sport am Samstag',
+                    'channel': 'deutschlandfunk'
+                }
+            }]
+        },
+        # Podcast feed with tag buttons, playlist count fluctuates
+        {
+            'url': 'https://www.deutschlandfunk.de/kommentare-und-themen-der-woche-100.html',
+            'info_dict': {
+                'id': 'kommentare-und-themen-der-woche-100',
+                'title': 'Meinung - Kommentare und Themen der Woche',
+                'description': 'md5:2901bbd65cd2d45e116d399a099ce5d5',
+            },
+            'playlist_mincount': 10,
+        },
+        # Podcast feed with no description
+        {
+            'url': 'https://www.deutschlandfunk.de/podcast-tolle-idee-100.html',
+            'info_dict': {
+                'id': 'podcast-tolle-idee-100',
+                'title': 'Wissenschaftspodcast - Tolle Idee! - Was wurde daraus?',
+            },
+            'playlist_mincount': 11,
+        },
+    ]
+
+    def _real_extract(self, url):
+        playlist_id = self._match_id(url)
+        webpage = self._download_webpage(url, playlist_id)
+
+        return self.playlist_result(
+            map(self._parse_button_attrs, re.findall(self._BUTTON_REGEX, webpage)),
+            playlist_id, self._html_search_meta(['og:title', 'twitter:title'], webpage, default=None),
+            self._html_search_meta(['description', 'og:description', 'twitter:description'], webpage, default=None))

youtube_dl/extractor/extractors.py

@@ -227,6 +227,7 @@ from .ciscolive import (
     CiscoLiveSearchIE,
 )
 from .cjsw import CJSWIE
+from .clipchamp import ClipchampIE
 from .cliphunter import CliphunterIE
 from .clippit import ClippitIE
 from .cliprs import ClipRsIE
@@ -296,6 +297,10 @@ from .dbtv import DBTVIE
 from .dctp import DctpTvIE
 from .deezer import DeezerPlaylistIE
 from .democracynow import DemocracynowIE
+from .dlf import (
+    DLFCorpusIE,
+    DLFIE,
+)
 from .dfb import DFBIE
 from .dhm import DHMIE
 from .digg import DiggIE
@@ -445,6 +450,13 @@ from .gfycat import GfycatIE
 from .giantbomb import GiantBombIE
 from .giga import GigaIE
 from .glide import GlideIE
+from .globalplayer import (
+    GlobalPlayerLiveIE,
+    GlobalPlayerLivePlaylistIE,
+    GlobalPlayerAudioIE,
+    GlobalPlayerAudioEpisodeIE,
+    GlobalPlayerVideoIE
+)
 from .globo import (
     GloboIE,
     GloboArticleIE,
@@ -976,6 +988,10 @@ from .pornhub import (
 from .pornotube import PornotubeIE
 from .pornovoisines import PornoVoisinesIE
 from .pornoxo import PornoXOIE
+from .pr0gramm import (
+    Pr0grammIE,
+    Pr0grammStaticIE,
+)
 from .puhutv import (
     PuhuTVIE,
     PuhuTVSerieIE,
@@ -1076,6 +1092,10 @@ from .rutube import (
 from .rutv import RUTVIE
 from .ruutu import RuutuIE
 from .ruv import RuvIE
+from .s4c import (
+    S4CIE,
+    S4CSeriesIE,
+)
 from .safari import (
     SafariIE,
     SafariApiIE,
@@ -1570,6 +1590,7 @@ from .weibo import (
     WeiboMobileIE
 )
 from .weiqitv import WeiqiTVIE
+from .whyp import WhypIE
 from .wistia import (
     WistiaIE,
     WistiaPlaylistIE,

youtube_dl/extractor/globalplayer.py

@@ -0,0 +1,273 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..utils import (
+    clean_html,
+    join_nonempty,
+    merge_dicts,
+    parse_duration,
+    str_or_none,
+    T,
+    traverse_obj,
+    unified_strdate,
+    unified_timestamp,
+    urlhandle_detect_ext,
+)
+
+
+class GlobalPlayerBaseIE(InfoExtractor):
+
+    def _get_page_props(self, url, video_id):
+        webpage = self._download_webpage(url, video_id)
+        return self._search_nextjs_data(webpage, video_id)['props']['pageProps']
+
+    def _request_ext(self, url, video_id):
+        return urlhandle_detect_ext(self._request_webpage(  # Server rejects HEAD requests
+            url, video_id, note='Determining source extension'))
+
+    @staticmethod
+    def _clean_desc(x):
+        x = clean_html(x)
+        if x:
+            x = x.replace('\xa0', ' ')
+        return x
+
+    def _extract_audio(self, episode, series):
+
+        return merge_dicts({
+            'vcodec': 'none',
+        }, traverse_obj(series, {
+            'series': 'title',
+            'series_id': 'id',
+            'thumbnail': 'imageUrl',
+            'uploader': 'itunesAuthor',  # podcasts only
+        }), traverse_obj(episode, {
+            'id': 'id',
+            'description': ('description', T(self._clean_desc)),
+            'duration': ('duration', T(parse_duration)),
+            'thumbnail': 'imageUrl',
+            'url': 'streamUrl',
+            'timestamp': (('pubDate', 'startDate'), T(unified_timestamp)),
+            'title': 'title',
+        }, get_all=False), rev=True)
+
+
+class GlobalPlayerLiveIE(GlobalPlayerBaseIE):
+    _VALID_URL = r'https?://www\.globalplayer\.com/live/(?P<id>\w+)/\w+'
+    _TESTS = [{
+        'url': 'https://www.globalplayer.com/live/smoothchill/uk/',
+        'info_dict': {
+            'id': '2mx1E',
+            'ext': 'aac',
+            'display_id': 'smoothchill-uk',
+            'title': 're:^Smooth Chill.+$',
+            'thumbnail': 'https://herald.musicradio.com/media/f296ade8-50c9-4f60-911f-924e96873620.png',
+            'description': 'Music To Chill To',
+            # 'live_status': 'is_live',
+            'is_live': True,
+        },
+    }, {
+        # national station
+        'url': 'https://www.globalplayer.com/live/heart/uk/',
+        'info_dict': {
+            'id': '2mwx4',
+            'ext': 'aac',
+            'description': 'turn up the feel good!',
+            'thumbnail': 'https://herald.musicradio.com/media/49b9e8cb-15bf-4bf2-8c28-a4850cc6b0f3.png',
+            # 'live_status': 'is_live',
+            'is_live': True,
+            'title': 're:^Heart UK.+$',
+            'display_id': 'heart-uk',
+        },
+    }, {
+        # regional variation
+        'url': 'https://www.globalplayer.com/live/heart/london/',
+        'info_dict': {
+            'id': 'AMqg',
+            'ext': 'aac',
+            'thumbnail': 'https://herald.musicradio.com/media/49b9e8cb-15bf-4bf2-8c28-a4850cc6b0f3.png',
+            'title': 're:^Heart London.+$',
+            # 'live_status': 'is_live',
+            'is_live': True,
+            'display_id': 'heart-london',
+            'description': 'turn up the feel good!',
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        station = self._get_page_props(url, video_id)['station']
+        stream_url = station['streamUrl']
+
+        return merge_dicts({
+            'id': station['id'],
+            'display_id': (
+                join_nonempty('brandSlug', 'slug', from_dict=station)
+                or station.get('legacyStationPrefix')),
+            'url': stream_url,
+            'ext': self._request_ext(stream_url, video_id),
+            'vcodec': 'none',
+            'is_live': True,
+        }, {
+            'title': self._live_title(traverse_obj(
+                station, (('name', 'brandName'), T(str_or_none)),
+                get_all=False)),
+        }, traverse_obj(station, {
+            'description': 'tagline',
+            'thumbnail': 'brandLogo',
+        }), rev=True)
+
+
+class GlobalPlayerLivePlaylistIE(GlobalPlayerBaseIE):
+    _VALID_URL = r'https?://www\.globalplayer\.com/playlists/(?P<id>\w+)'
+    _TESTS = [{
+        # "live playlist"
+        'url': 'https://www.globalplayer.com/playlists/8bLk/',
+        'info_dict': {
+            'id': '8bLk',
+            'ext': 'aac',
+            # 'live_status': 'is_live',
+            'is_live': True,
+            'description': r're:(?s).+\bclassical\b.+\bClassic FM Hall [oO]f Fame\b',
+            'thumbnail': 'https://images.globalplayer.com/images/551379?width=450&signature=oMLPZIoi5_dBSHnTMREW0Xg76mA=',
+            'title': 're:Classic FM Hall of Fame.+$'
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        station = self._get_page_props(url, video_id)['playlistData']
+        stream_url = station['streamUrl']
+
+        return merge_dicts({
+            'id': video_id,
+            'url': stream_url,
+            'ext': self._request_ext(stream_url, video_id),
+            'vcodec': 'none',
+            'is_live': True,
+        }, traverse_obj(station, {
+            'title': 'title',
+            'description': ('description', T(self._clean_desc)),
+            'thumbnail': 'image',
+        }), rev=True)
+
+
+class GlobalPlayerAudioIE(GlobalPlayerBaseIE):
+    _VALID_URL = r'https?://www\.globalplayer\.com/(?:(?P<podcast>podcasts)/|catchup/\w+/\w+/)(?P<id>\w+)/?(?:$|[?#])'
+    _TESTS = [{
+        # podcast
+        'url': 'https://www.globalplayer.com/podcasts/42KuaM/',
+        'playlist_mincount': 5,
+        'info_dict': {
+            'id': '42KuaM',
+            'title': 'Filthy Ritual',
+            'thumbnail': 'md5:60286e7d12d795bd1bbc9efc6cee643e',
+            'categories': ['Society & Culture', 'True Crime'],
+            'uploader': 'Global',
+            'description': r're:(?s).+\bscam\b.+?\bseries available now\b',
+        },
+    }, {
+        # radio catchup
+        'url': 'https://www.globalplayer.com/catchup/lbc/uk/46vyD7z/',
+        'playlist_mincount': 2,
+        'info_dict': {
+            'id': '46vyD7z',
+            'description': 'Nick Ferrari At Breakfast is Leading Britain\'s Conversation.',
+            'title': 'Nick Ferrari',
+            'thumbnail': 'md5:4df24d8a226f5b2508efbcc6ae874ebf',
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_id, podcast = self._match_valid_url(url).group('id', 'podcast')
+        props = self._get_page_props(url, video_id)
+        series = props['podcastInfo'] if podcast else props['catchupInfo']
+
+        return merge_dicts({
+            '_type': 'playlist',
+            'id': video_id,
+            'entries': [self._extract_audio(ep, series) for ep in traverse_obj(
+                        series, ('episodes', lambda _, v: v['id'] and v['streamUrl']))],
+            'categories': traverse_obj(series, ('categories', Ellipsis, 'name')) or None,
+        }, traverse_obj(series, {
+            'description': ('description', T(self._clean_desc)),
+            'thumbnail': 'imageUrl',
+            'title': 'title',
+            'uploader': 'itunesAuthor',  # podcasts only
+        }), rev=True)
+
+
+class GlobalPlayerAudioEpisodeIE(GlobalPlayerBaseIE):
+    _VALID_URL = r'https?://www\.globalplayer\.com/(?:(?P<podcast>podcasts)|catchup/\w+/\w+)/episodes/(?P<id>\w+)/?(?:$|[?#])'
+    _TESTS = [{
+        # podcast
+        'url': 'https://www.globalplayer.com/podcasts/episodes/7DrfNnE/',
+        'info_dict': {
+            'id': '7DrfNnE',
+            'ext': 'mp3',
+            'title': 'Filthy Ritual - Trailer',
+            'description': 'md5:1f1562fd0f01b4773b590984f94223e0',
+            'thumbnail': 'md5:60286e7d12d795bd1bbc9efc6cee643e',
+            'duration': 225.0,
+            'timestamp': 1681254900,
+            'series': 'Filthy Ritual',
+            'series_id': '42KuaM',
+            'upload_date': '20230411',
+            'uploader': 'Global',
+        },
+    }, {
+        # radio catchup
+        'url': 'https://www.globalplayer.com/catchup/lbc/uk/episodes/2zGq26Vcv1fCWhddC4JAwETXWe/',
+        'only_matching': True,
+        # expired: refresh the details with a current show for a full test
+        'info_dict': {
+            'id': '2zGq26Vcv1fCWhddC4JAwETXWe',
+            'ext': 'm4a',
+            'timestamp': 1682056800,
+            'series': 'Nick Ferrari',
+            'thumbnail': 'md5:4df24d8a226f5b2508efbcc6ae874ebf',
+            'upload_date': '20230421',
+            'series_id': '46vyD7z',
+            'description': 'Nick Ferrari At Breakfast is Leading Britain\'s Conversation.',
+            'title': 'Nick Ferrari',
+            'duration': 10800.0,
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_id, podcast = self._match_valid_url(url).group('id', 'podcast')
+        props = self._get_page_props(url, video_id)
+        episode = props['podcastEpisode'] if podcast else props['catchupEpisode']
+
+        return self._extract_audio(
+            episode, traverse_obj(episode, 'podcast', 'show', expected_type=dict) or {})
+
+
+class GlobalPlayerVideoIE(GlobalPlayerBaseIE):
+    _VALID_URL = r'https?://www\.globalplayer\.com/videos/(?P<id>\w+)'
+    _TESTS = [{
+        'url': 'https://www.globalplayer.com/videos/2JsSZ7Gm2uP/',
+        'info_dict': {
+            'id': '2JsSZ7Gm2uP',
+            'ext': 'mp4',
+            'description': 'md5:6a9f063c67c42f218e42eee7d0298bfd',
+            'thumbnail': 'md5:d4498af48e15aae4839ce77b97d39550',
+            'upload_date': '20230420',
+            'title': 'Treble Malakai Bayoh sings a sublime Handel aria at Classic FM Live',
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        meta = self._get_page_props(url, video_id)['videoData']
+
+        return merge_dicts({
+            'id': video_id,
+        }, traverse_obj(meta, {
+            'url': 'url',
+            'thumbnail': ('image', 'url'),
+            'title': 'title',
+            'upload_date': ('publish_date', T(unified_strdate)),
+            'description': 'description',
+        }), rev=True)

youtube_dl/extractor/itv.py

@@ -59,7 +59,7 @@ class ITVBaseIE(InfoExtractor):
 
     @staticmethod
     def _vanilla_ua_header():
-        return {'User-agent': 'Mozilla/5.0'}
+        return {'User-Agent': 'Mozilla/5.0'}
 
     def _download_webpage_handle(self, url, video_id, *args, **kwargs):
         # specialised to (a) use vanilla UA (b) detect geo-block
@@ -69,7 +69,7 @@ class ITVBaseIE(InfoExtractor):
                 'user_agent' not in params
                 and not any(re.match(r'(?i)user-agent\s*:', h)
                             for h in (params.get('headers') or []))
-                and 'User-agent' not in (kwargs.get('headers') or {})):
+                and 'User-Agent' not in (kwargs.get('headers') or {})):
 
             kwargs.setdefault('headers', {})
             kwargs['headers'] = self._vanilla_ua_header()

youtube_dl/extractor/openload.py

@@ -7,6 +7,7 @@ import subprocess
 import tempfile
 
 from ..compat import (
+    compat_open as open,
     compat_urlparse,
     compat_kwargs,
 )

youtube_dl/extractor/s4c.py

@@ -0,0 +1,124 @@
+# coding: utf-8
+
+from __future__ import unicode_literals
+
+from functools import partial as partial_f
+
+from .common import InfoExtractor
+from ..utils import (
+    float_or_none,
+    merge_dicts,
+    T,
+    traverse_obj,
+    txt_or_none,
+    url_or_none,
+)
+
+
+class S4CIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?s4c\.cymru/clic/programme/(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://www.s4c.cymru/clic/programme/861362209',
+        'info_dict': {
+            'id': '861362209',
+            'ext': 'mp4',
+            'title': 'Y Swn',
+            'description': 'md5:f7681a30e4955b250b3224aa9fe70cf0',
+            'duration': 5340,
+            'thumbnail': 'https://www.s4c.cymru/amg/1920x1080/Y_Swn_2023S4C_099_ii.jpg',
+        },
+    }, {
+        'url': 'https://www.s4c.cymru/clic/programme/856636948',
+        'info_dict': {
+            'id': '856636948',
+            'ext': 'mp4',
+            'title': 'Am Dro',
+            'duration': 2880,
+            'description': 'md5:100d8686fc9a632a0cb2db52a3433ffe',
+            'thumbnail': 'https://www.s4c.cymru/amg/1920x1080/Am_Dro_2022-23S4C_P6_4005.jpg',
+        },
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        details = self._download_json(
+            'https://www.s4c.cymru/df/full_prog_details',
+            video_id, query={
+                'lang': 'e',
+                'programme_id': video_id,
+            }, fatal=False)
+
+        player_config = self._download_json(
+            'https://player-api.s4c-cdn.co.uk/player-configuration/prod', video_id, query={
+                'programme_id': video_id,
+                'signed': '0',
+                'lang': 'en',
+                'mode': 'od',
+                'appId': 'clic',
+                'streamName': '',
+            }, note='Downloading player config JSON')
+
+        m3u8_url = self._download_json(
+            'https://player-api.s4c-cdn.co.uk/streaming-urls/prod', video_id, query={
+                'mode': 'od',
+                'application': 'clic',
+                'region': 'WW',
+                'extra': 'false',
+                'thirdParty': 'false',
+                'filename': player_config['filename'],
+            }, note='Downloading streaming urls JSON')['hls']
+        formats = self._extract_m3u8_formats(m3u8_url, video_id, 'mp4', m3u8_id='hls', entry_protocol='m3u8_native')
+        self._sort_formats(formats)
+
+        subtitles = {}
+        for sub in traverse_obj(player_config, ('subtitles', lambda _, v: url_or_none(v['0']))):
+            subtitles.setdefault(sub.get('3', 'en'), []).append({
+                'url': sub['0'],
+                'name': sub.get('1'),
+            })
+
+        return merge_dicts({
+            'id': video_id,
+            'formats': formats,
+            'subtitles': subtitles,
+            'thumbnail': url_or_none(player_config.get('poster')),
+        }, traverse_obj(details, ('full_prog_details', 0, {
+            'title': (('programme_title', 'series_title'), T(txt_or_none)),
+            'description': ('full_billing', T(txt_or_none)),
+            'duration': ('duration', T(partial_f(float_or_none, invscale=60))),
+        }), get_all=False),
+            rev=True)
+
+
+class S4CSeriesIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?s4c\.cymru/clic/series/(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://www.s4c.cymru/clic/series/864982911',
+        'playlist_mincount': 6,
+        'info_dict': {
+            'id': '864982911',
+            'title': 'Iaith ar Daith',
+        },
+    }, {
+        'url': 'https://www.s4c.cymru/clic/series/866852587',
+        'playlist_mincount': 8,
+        'info_dict': {
+            'id': '866852587',
+            'title': 'FFIT Cymru',
+        },
+    }]
+
+    def _real_extract(self, url):
+        series_id = self._match_id(url)
+        series_details = self._download_json(
+            'https://www.s4c.cymru/df/series_details', series_id, query={
+                'lang': 'e',
+                'series_id': series_id,
+                'show_prog_in_series': 'Y'
+            }, note='Downloading series details JSON')
+
+        return self.playlist_result(
+            (self.url_result('https://www.s4c.cymru/clic/programme/' + episode_id, S4CIE, episode_id)
+             for episode_id in traverse_obj(series_details, ('other_progs_in_series', Ellipsis, 'id'))),
+            playlist_id=series_id, playlist_title=traverse_obj(
+                series_details, ('full_prog_details', 0, 'series_title', T(txt_or_none))))

youtube_dl/extractor/whyp.py

@@ -0,0 +1,55 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..utils import (
+    float_or_none,
+    merge_dicts,
+    str_or_none,
+    T,
+    traverse_obj,
+    url_or_none,
+)
+
+
+class WhypIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?whyp\.it/tracks/(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://www.whyp.it/tracks/18337/home-page-example-track-b4kq7',
+        'md5': 'c1187b42ebf8605284e3dc92aeb33d16',
+        'info_dict': {
+            'url': 'https://cdn.whyp.it/50eb17cc-e9ff-4e18-b89b-dc9206a95cb1.mp3',
+            'id': '18337',
+            'title': 'Home Page Example Track',
+            'description': r're:(?s).+\bexample track\b',
+            'ext': 'mp3',
+            'duration': 52.82,
+            'uploader': 'Brad',
+            'uploader_id': '1',
+            'thumbnail': 'https://cdn.whyp.it/a537bb36-3373-4c61-96c8-27fc1b2f427a.jpg',
+        },
+    }, {
+        'url': 'https://www.whyp.it/tracks/18337',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        unique_id = self._match_id(url)
+        webpage = self._download_webpage(url, unique_id)
+        data = self._search_nuxt_data(webpage, unique_id)['rawTrack']
+
+        return merge_dicts({
+            'url': data['audio_url'],
+            'id': unique_id,
+        }, traverse_obj(data, {
+            'title': 'title',
+            'description': 'description',
+            'duration': ('duration', T(float_or_none)),
+            'uploader': ('user', 'username'),
+            'uploader_id': ('user', 'id', T(str_or_none)),
+            'thumbnail': ('artwork_url', T(url_or_none)),
+        }), {
+            'ext': 'mp3',
+            'vcodec': 'none',
+            'http_headers': {'Referer': 'https://whyp.it/'},
+        }, rev=True)

youtube_dl/extractor/youtube.py

@@ -19,6 +19,7 @@ from ..compat import (
     compat_urllib_parse_parse_qs as compat_parse_qs,
     compat_urllib_parse_unquote_plus,
     compat_urllib_parse_urlparse,
+    compat_zip as zip,
 )
 from ..jsinterp import JSInterpreter
 from ..utils import (
@@ -30,7 +31,9 @@ from ..utils import (
     extract_attributes,
     get_element_by_attribute,
     int_or_none,
+    join_nonempty,
     js_to_json,
+    LazyList,
     merge_dicts,
     mimetype2ext,
     parse_codecs,
@@ -43,6 +46,7 @@ from ..utils import (
     str_to_int,
     traverse_obj,
     try_get,
+    txt_or_none,
     unescapeHTML,
     unified_strdate,
     unsmuggle_url,
@@ -444,7 +448,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
             extract_attributes(self._search_regex(
                 r'''(?s)(<link\b[^>]+\bitemprop\s*=\s*("|')%s\2[^>]*>)'''
                 % re.escape(var_name),
-                get_element_by_attribute('itemprop', 'author', webpage) or '',
+                get_element_by_attribute('itemprop', 'author', webpage or '') or '',
                 'author link', default='')),
             paths[var_name][0])
 
@@ -1554,22 +1558,21 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
              r'\b[a-zA-Z0-9]+\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*encodeURIComponent\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\bm=(?P<sig>[a-zA-Z0-9$]{2,})\(decodeURIComponent\(h\.s\)\)',
              r'\bc&&\(c=(?P<sig>[a-zA-Z0-9$]{2,})\(decodeURIComponent\(c\)\)',
-             r'(?:\b|[^a-zA-Z0-9$])(?P<sig>[a-zA-Z0-9$]{2,})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\);[a-zA-Z0-9$]{2}\.[a-zA-Z0-9$]{2}\(a,\d+\)',
-             r'(?:\b|[^a-zA-Z0-9$])(?P<sig>[a-zA-Z0-9$]{2,})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)',
+             r'(?:\b|[^a-zA-Z0-9$])(?P<sig>[a-zA-Z0-9$]{2,})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)(?:;[a-zA-Z0-9$]{2}\.[a-zA-Z0-9$]{2}\(a,\d+\))?',
              r'(?P<sig>[a-zA-Z0-9$]+)\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)',
              # Obsolete patterns
-             r'(["\'])signature\1\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
+             r'("|\')signature\1\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\.sig\|\|(?P<sig>[a-zA-Z0-9$]+)\(',
              r'yt\.akamaized\.net/\)\s*\|\|\s*.*?\s*[cs]\s*&&\s*[adf]\.set\([^,]+\s*,\s*(?:encodeURIComponent\s*\()?\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\b[cs]\s*&&\s*[adf]\.set\([^,]+\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\b[a-zA-Z0-9]+\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
-             r'\bc\s*&&\s*a\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\(',
-             r'\bc\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\bc\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\('),
             jscode, 'Initial JS player signature function name', group='sig')
 
         jsi = JSInterpreter(jscode)
+
         initial_function = jsi.extract_function(funcname)
+
         return lambda s: initial_function([s])
 
     def _decrypt_signature(self, s, video_id, player_url):
@@ -1620,15 +1623,22 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         nfunc, idx = re.match(target, nfunc_and_idx).group('nfunc', 'idx')
         if not idx:
             return nfunc
+
+        VAR_RE_TMPL = r'var\s+%s\s*=\s*(?P<name>\[(?P<alias>%s)\])[;,]'
+        note = 'Initial JS player n function {0} (%s[%s])' % (nfunc, idx)
+
+        def search_function_code(needle, group):
+            return self._search_regex(
+                VAR_RE_TMPL % (re.escape(nfunc), needle), jscode,
+                note.format(group), group=group)
+
         if int_or_none(idx) == 0:
-            real_nfunc = self._search_regex(
-                r'var %s\s*=\s*\[([a-zA-Z_$][\w$]*)\];' % (re.escape(nfunc), ), jscode,
-                'Initial JS player n function alias ({nfunc}[{idx}])'.format(**locals()))
+            real_nfunc = search_function_code(r'[a-zA-Z_$][\w$]*', group='alias')
             if real_nfunc:
                 return real_nfunc
-        return self._parse_json(self._search_regex(
-            r'var %s\s*=\s*(\[.+?\]);' % (re.escape(nfunc), ), jscode,
-            'Initial JS player n function name ({nfunc}[{idx}])'.format(**locals())), nfunc, transform_source=js_to_json)[int(idx)]
+        return self._parse_json(
+            search_function_code('.+?', group='name'),
+            nfunc, transform_source=js_to_json)[int(idx)]
 
     def _extract_n_function(self, video_id, player_url):
         player_id = self._extract_player_info(player_url)
@@ -1986,9 +1996,19 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         itags = []
         itag_qualities = {}
         q = qualities(['tiny', 'small', 'medium', 'large', 'hd720', 'hd1080', 'hd1440', 'hd2160', 'hd2880', 'highres'])
+        CHUNK_SIZE = 10 << 20
+
         streaming_data = player_response.get('streamingData') or {}
         streaming_formats = streaming_data.get('formats') or []
         streaming_formats.extend(streaming_data.get('adaptiveFormats') or [])
+
+        def build_fragments(f):
+            return LazyList({
+                'url': update_url_query(f['url'], {
+                    'range': '{0}-{1}'.format(range_start, min(range_start + CHUNK_SIZE - 1, f['filesize']))
+                })
+            } for range_start in range(0, f['filesize'], CHUNK_SIZE))
+
         for fmt in streaming_formats:
             if fmt.get('targetDurationSec') or fmt.get('drmFamilies'):
                 continue
@@ -2041,28 +2061,18 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 if mobj:
                     dct['ext'] = mimetype2ext(mobj.group(1))
                     dct.update(parse_codecs(mobj.group(2)))
-            no_audio = dct.get('acodec') == 'none'
-            no_video = dct.get('vcodec') == 'none'
-            if no_audio:
-                dct['vbr'] = tbr
-            if no_video:
-                dct['abr'] = tbr
-            if no_audio or no_video:
-                CHUNK_SIZE = 10 << 20
+            single_stream = 'none' in (dct.get(c) for c in ('acodec', 'vcodec'))
+            if single_stream and dct.get('ext'):
+                dct['container'] = dct['ext'] + '_dash'
+            if single_stream or itag == '17':
                 # avoid Youtube throttling
                 dct.update({
                     'protocol': 'http_dash_segments',
-                    'fragments': [{
-                        'url': update_url_query(dct['url'], {
-                            'range': '{0}-{1}'.format(range_start, min(range_start + CHUNK_SIZE - 1, dct['filesize']))
-                        })
-                    } for range_start in range(0, dct['filesize'], CHUNK_SIZE)]
+                    'fragments': build_fragments(dct),
                 } if dct['filesize'] else {
                     'downloader_options': {'http_chunk_size': CHUNK_SIZE}  # No longer useful?
                 })
 
-                if dct.get('ext'):
-                    dct['container'] = dct['ext'] + '_dash'
             formats.append(dct)
 
         hls_manifest_url = streaming_data.get('hlsManifestUrl')
@@ -2609,6 +2619,17 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
             'uploader_id': '@lexwill718',
         },
         'playlist_mincount': 75,
+    }, {
+        # Releases tab
+        'url': 'https://www.youtube.com/@daftpunk/releases',
+        'info_dict': {
+            'id': 'UC_kRDKYrUlrbtrSiyu5Tflg',
+            'title': 'Daft Punk - Releases',
+            'description': 'Daft Punk (1993 - 2021) - Official YouTube Channel',
+            'uploader_id': '@daftpunk',
+            'uploader': 'Daft Punk',
+        },
+        'playlist_mincount': 36,
     }, {
         'url': 'https://invidio.us/channel/UCmlqkdCBesrv2Lak1mF_MxA',
         'only_matching': True,
@@ -2823,6 +2844,12 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
                 continue
             return renderer
 
+    @staticmethod
+    def _get_text(r, k):
+        return traverse_obj(
+            r, (k, 'runs', 0, 'text'), (k, 'simpleText'),
+            expected_type=txt_or_none)
+
     def _grid_entries(self, grid_renderer):
         for item in grid_renderer['items']:
             if not isinstance(item, dict):
@@ -2830,9 +2857,7 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
             renderer = self._extract_grid_item_renderer(item)
             if not isinstance(renderer, dict):
                 continue
-            title = try_get(
-                renderer, (lambda x: x['title']['runs'][0]['text'],
-                           lambda x: x['title']['simpleText']), compat_str)
+            title = self._get_text(renderer, 'title')
             # playlist
             playlist_id = renderer.get('playlistId')
             if playlist_id:
@@ -2849,8 +2874,7 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
             # channel
             channel_id = renderer.get('channelId')
             if channel_id:
-                title = try_get(
-                    renderer, lambda x: x['title']['simpleText'], compat_str)
+                title = self._get_text(renderer, 'title')
                 yield self.url_result(
                     'https://www.youtube.com/channel/%s' % channel_id,
                     ie=YoutubeTabIE.ie_key(), video_title=title)
@@ -2959,15 +2983,26 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
 
     def _rich_grid_entries(self, contents):
         for content in contents:
-            video_renderer = try_get(
-                content,
-                (lambda x: x['richItemRenderer']['content']['videoRenderer'],
-                 lambda x: x['richItemRenderer']['content']['reelItemRenderer']),
-                dict)
+            content = traverse_obj(
+                content, ('richItemRenderer', 'content'),
+                expected_type=dict) or {}
+            video_renderer = traverse_obj(
+                content, 'videoRenderer', 'reelItemRenderer',
+                expected_type=dict)
             if video_renderer:
                 entry = self._video_entry(video_renderer)
                 if entry:
                     yield entry
+            # playlist
+            renderer = traverse_obj(
+                content, 'playlistRenderer', expected_type=dict) or {}
+            title = self._get_text(renderer, 'title')
+            playlist_id = renderer.get('playlistId')
+            if playlist_id:
+                yield self.url_result(
+                    'https://www.youtube.com/playlist?list=%s' % playlist_id,
+                    ie=YoutubeTabIE.ie_key(), video_id=playlist_id,
+                    video_title=title)
 
     @staticmethod
     def _build_continuation_query(continuation, ctp=None):
@@ -3072,6 +3107,7 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
                 return
             for entry in self._rich_grid_entries(rich_grid_renderer.get('contents') or []):
                 yield entry
+
             continuation = self._extract_continuation(rich_grid_renderer)
 
         ytcfg = self._extract_ytcfg(item_id, webpage)
@@ -3214,50 +3250,41 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
         uploader['channel'] = uploader['uploader']
         return uploader
 
-    @staticmethod
-    def _extract_alert(data):
+    @classmethod
+    def _extract_alert(cls, data):
         alerts = []
-        for alert in try_get(data, lambda x: x['alerts'], list) or []:
-            if not isinstance(alert, dict):
-                continue
-            alert_text = try_get(
-                alert, lambda x: x['alertRenderer']['text'], dict)
+        for alert in traverse_obj(data, ('alerts', Ellipsis), expected_type=dict):
+            alert_text = traverse_obj(
+                alert, (None, lambda x: x['alertRenderer']['text']), get_all=False)
             if not alert_text:
                 continue
-            text = try_get(
-                alert_text,
-                (lambda x: x['simpleText'], lambda x: x['runs'][0]['text']),
-                compat_str)
+            text = cls._get_text(alert_text, 'text')
             if text:
                 alerts.append(text)
         return '\n'.join(alerts)
 
     def _extract_from_tabs(self, item_id, webpage, data, tabs):
         selected_tab = self._extract_selected_tab(tabs)
-        renderer = try_get(
-            data, lambda x: x['metadata']['channelMetadataRenderer'], dict)
+        renderer = traverse_obj(data, ('metadata', 'channelMetadataRenderer'),
+                                expected_type=dict) or {}
         playlist_id = item_id
         title = description = None
         if renderer:
-            channel_title = renderer.get('title') or item_id
-            tab_title = selected_tab.get('title')
-            title = channel_title or item_id
-            if tab_title:
-                title += ' - %s' % tab_title
-            if selected_tab.get('expandedText'):
-                title += ' - %s' % selected_tab['expandedText']
-            description = renderer.get('description')
-            playlist_id = renderer.get('externalId')
+            channel_title = txt_or_none(renderer.get('title')) or item_id
+            tab_title = txt_or_none(selected_tab.get('title'))
+            title = join_nonempty(
+                channel_title or item_id, tab_title,
+                txt_or_none(selected_tab.get('expandedText')),
+                delim=' - ')
+            description = txt_or_none(renderer.get('description'))
+            playlist_id = txt_or_none(renderer.get('externalId')) or playlist_id
         else:
-            renderer = try_get(
-                data, lambda x: x['metadata']['playlistMetadataRenderer'], dict)
-            if renderer:
-                title = renderer.get('title')
-            else:
-                renderer = try_get(
-                    data, lambda x: x['header']['hashtagHeaderRenderer'], dict)
-                if renderer:
-                    title = try_get(renderer, lambda x: x['hashtag']['simpleText'])
+            renderer = traverse_obj(data,
+                                    ('metadata', 'playlistMetadataRenderer'),
+                                    ('header', 'hashtagHeaderRenderer'),
+                                    expected_type=dict) or {}
+            title = traverse_obj(renderer, 'title', ('hashtag', 'simpleText'),
+                                 expected_type=txt_or_none)
         playlist = self.playlist_result(
             self._entries(selected_tab, item_id, webpage),
             playlist_id=playlist_id, playlist_title=title,
@@ -3265,15 +3292,16 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
         return merge_dicts(playlist, self._extract_uploader(renderer, data))
 
     def _extract_from_playlist(self, item_id, url, data, playlist):
-        title = playlist.get('title') or try_get(
-            data, lambda x: x['titleText']['simpleText'], compat_str)
-        playlist_id = playlist.get('playlistId') or item_id
+        title = traverse_obj((playlist, data),
+                             (0, 'title'), (1, 'titleText', 'simpleText'),
+                             expected_type=txt_or_none)
+        playlist_id = txt_or_none(playlist.get('playlistId')) or item_id
         # Inline playlist rendition continuation does not always work
         # at Youtube side, so delegating regular tab-based playlist URL
         # processing whenever possible.
-        playlist_url = urljoin(url, try_get(
-            playlist, lambda x: x['endpoint']['commandMetadata']['webCommandMetadata']['url'],
-            compat_str))
+        playlist_url = urljoin(url, traverse_obj(
+            playlist, ('endpoint', 'commandMetadata', 'webCommandMetadata', 'url'),
+            expected_type=url_or_none))
         if playlist_url and playlist_url != url:
             return self.url_result(
                 playlist_url, ie=YoutubeTabIE.ie_key(), video_id=playlist_id,

youtube_dl/jsinterp.py

@@ -2,10 +2,11 @@ from __future__ import unicode_literals
 
 import itertools
 import json
-import math
 import operator
 import re
 
+from functools import update_wrapper
+
 from .utils import (
     error_to_compat_str,
     ExtractorError,
@@ -23,11 +24,46 @@ from .compat import (
 )
 
 
+# name JS functions
+class function_with_repr(object):
+    # from yt_dlp/utils.py, but in this module
+    # repr_ is always set
+    def __init__(self, func, repr_):
+        update_wrapper(self, func)
+        self.func, self.__repr = func, repr_
+
+    def __call__(self, *args, **kwargs):
+        return self.func(*args, **kwargs)
+
+    def __repr__(self):
+        return self.__repr
+
+
+# name JS operators
+def wraps_op(op):
+
+    def update_and_rename_wrapper(w):
+        f = update_wrapper(w, op)
+        # fn names are str in both Py 2/3
+        f.__name__ = str('JS_') + f.__name__
+        return f
+
+    return update_and_rename_wrapper
+
+
+# NB In principle NaN cannot be checked by membership.
+# Here all NaN values are actually this one, so _NaN is _NaN,
+# although _NaN != _NaN.
+
+_NaN = float('nan')
+
+
 def _js_bit_op(op):
 
     def zeroise(x):
-        return 0 if x in (None, JS_Undefined) else x
+        return 0 if x in (None, JS_Undefined, _NaN) else x
 
+    @wraps_op(op)
     def wrapped(a, b):
         return op(zeroise(a), zeroise(b)) & 0xffffffff
 
@@ -36,23 +72,24 @@ def _js_bit_op(op):
 
 def _js_arith_op(op):
 
+    @wraps_op(op)
     def wrapped(a, b):
         if JS_Undefined in (a, b):
-            return float('nan')
+            return _NaN
         return op(a or 0, b or 0)
 
     return wrapped
 
 
 def _js_div(a, b):
-    if JS_Undefined in (a, b) or not (a and b):
-        return float('nan')
+    if JS_Undefined in (a, b) or not (a or b):
+        return _NaN
     return operator.truediv(a or 0, b) if b else float('inf')
 
 
 def _js_mod(a, b):
     if JS_Undefined in (a, b) or not b:
-        return float('nan')
+        return _NaN
     return (a or 0) % b
 
 
@@ -60,12 +97,13 @@ def _js_exp(a, b):
     if not b:
         return 1  # even 0 ** 0 !!
     elif JS_Undefined in (a, b):
-        return float('nan')
+        return _NaN
     return (a or 0) ** b
 
 
 def _js_eq_op(op):
 
+    @wraps_op(op)
     def wrapped(a, b):
         if set((a, b)) <= set((None, JS_Undefined)):
             return op(a, a)
@@ -76,6 +114,7 @@ def _js_eq_op(op):
 
 def _js_comp_op(op):
 
+    @wraps_op(op)
     def wrapped(a, b):
         if JS_Undefined in (a, b):
             return False
@@ -90,13 +129,8 @@ def _js_comp_op(op):
 
 def _js_ternary(cndn, if_true=True, if_false=False):
     """Simulate JS's ternary operator (cndn?if_true:if_false)"""
-    if cndn in (False, None, 0, '', JS_Undefined):
+    if cndn in (False, None, 0, '', JS_Undefined, _NaN):
         return if_false
-    try:
-        if math.isnan(cndn):  # NB: NaN cannot be checked by membership
-            return if_false
-    except TypeError:
-        pass
     return if_true
 
 
@@ -243,9 +277,20 @@ class JSInterpreter(object):
 
         def __getattr__(self, name):
             self.__instantiate()
-            if hasattr(self, name):
-                return getattr(self, name)
-            return super(JSInterpreter.JS_RegExp, self).__getattr__(name)
+            # make Py 2.6 conform to its lying documentation
+            if name == 'flags':
+                self.flags = self.__flags
+                return self.flags
+            elif name == 'pattern':
+                self.pattern = self.__pattern_txt
+                return self.pattern
+            elif hasattr(self.__self, name):
+                v = getattr(self.__self, name)
+                setattr(self, name, v)
+                return v
+            elif name in ('groupindex', 'groups'):
+                return 0 if name == 'groupindex' else {}
+            raise AttributeError('{0} has no attribute named {1}'.format(self, name))
 
         @classmethod
         def regex_flags(cls, expr):
@@ -269,6 +314,8 @@ class JSInterpreter(object):
     def _named_object(self, namespace, obj):
         self.__named_object_counter += 1
         name = '%s%d' % (self._OBJ_NAME, self.__named_object_counter)
+        if callable(obj) and not isinstance(obj, function_with_repr):
+            obj = function_with_repr(obj, 'F<%s>' % (self.__named_object_counter, ))
         namespace[name] = obj
         return name
 
@@ -356,6 +403,7 @@ class JSInterpreter(object):
             return right_val
 
         try:
+            # print('Eval:', opfunc.__name__, left_val, right_val)
             return opfunc(left_val, right_val)
         except Exception as e:
             raise self.Exception('Failed to evaluate {left_val!r:.50} {op} {right_val!r:.50}'.format(**locals()), expr, cause=e)
@@ -395,6 +443,7 @@ class JSInterpreter(object):
             raise self.Exception('Recursion limit reached')
         allow_recursion -= 1
 
+        # print('At: ' + stmt[:60])
         should_return = False
         # fails on (eg) if (...) stmt1; else stmt2;
         sub_statements = list(self._separate(stmt, ';')) or ['']
@@ -462,8 +511,15 @@ class JSInterpreter(object):
                 expr = self._dump(inner, local_vars) + outer
 
         if expr.startswith('('):
-            inner, outer = self._separate_at_paren(expr)
-            inner, should_abort = self.interpret_statement(inner, local_vars, allow_recursion)
+
+            m = re.match(r'\((?P<d>[a-z])%(?P<e>[a-z])\.length\+(?P=e)\.length\)%(?P=e)\.length', expr)
+            if m:
+                # short-cut eval of frequently used `(d%e.length+e.length)%e.length`, worth ~6% on `pytest -k test_nsig`
+                outer = None
+                inner, should_abort = self._offset_e_by_d(m.group('d'), m.group('e'), local_vars)
+            else:
+                inner, outer = self._separate_at_paren(expr)
+                inner, should_abort = self.interpret_statement(inner, local_vars, allow_recursion)
             if not outer or should_abort:
                 return inner, should_abort or should_return
             else:
@@ -675,7 +731,7 @@ class JSInterpreter(object):
         elif expr == 'undefined':
             return JS_Undefined, should_return
         elif expr == 'NaN':
-            return float('NaN'), should_return
+            return _NaN, should_return
 
         elif md.get('return'):
             return local_vars[m.group('name')], should_return
@@ -702,9 +758,24 @@ class JSInterpreter(object):
                 continue
 
             right_expr = separated.pop()
-            while op == '-' and len(separated) > 1 and not separated[-1].strip():
-                right_expr = '-' + right_expr
-                separated.pop()
+            # handle operators that are both unary and binary, minimal BODMAS
+            if op in ('+', '-'):
+                undone = 0
+                while len(separated) > 1 and not separated[-1].strip():
+                    undone += 1
+                    separated.pop()
+                if op == '-' and undone % 2 != 0:
+                    right_expr = op + right_expr
+                left_val = separated[-1]
+                for dm_op in ('*', '%', '/', '**'):
+                    bodmas = tuple(self._separate(left_val, dm_op, skip_delims=skip_delim))
+                    if len(bodmas) > 1 and not bodmas[-1].strip():
+                        expr = op.join(separated) + op + right_expr
+                        right_expr = None
+                        break
+                if right_expr is None:
+                    continue
+
             left_val = self.interpret_expression(op.join(separated), local_vars, allow_recursion)
             return self._operator(op, left_val, right_expr, expr, local_vars, allow_recursion), should_return
 
@@ -880,16 +951,19 @@ class JSInterpreter(object):
     def extract_object(self, objname):
         _FUNC_NAME_RE = r'''(?:[a-zA-Z$0-9]+|"[a-zA-Z$0-9]+"|'[a-zA-Z$0-9]+')'''
         obj = {}
-        obj_m = re.search(
-            r'''(?x)
-                (?<!this\.)%s\s*=\s*{\s*
-                    (?P<fields>(%s\s*:\s*function\s*\(.*?\)\s*{.*?}(?:,\s*)?)*)
-                }\s*;
-            ''' % (re.escape(objname), _FUNC_NAME_RE),
-            self.code)
-        if not obj_m:
+        fields = None
+        for obj_m in re.finditer(
+                r'''(?xs)
+                    {0}\s*\.\s*{1}|{1}\s*=\s*\{{\s*
+                        (?P<fields>({2}\s*:\s*function\s*\(.*?\)\s*\{{.*?}}(?:,\s*)?)*)
+                    }}\s*;
+                '''.format(_NAME_RE, re.escape(objname), _FUNC_NAME_RE),
+                self.code):
+            fields = obj_m.group('fields')
+            if fields:
+                break
+        else:
             raise self.Exception('Could not find object ' + objname)
-        fields = obj_m.group('fields')
         # Currently, it only supports function definitions
         fields_m = re.finditer(
             r'''(?x)
@@ -902,6 +976,17 @@ class JSInterpreter(object):
 
         return obj
 
+    @staticmethod
+    def _offset_e_by_d(d, e, local_vars):
+        """ Short-cut eval: (d%e.length+e.length)%e.length """
+        try:
+            d = local_vars[d]
+            e = local_vars[e]
+            e = len(e)
+            return _js_mod(_js_mod(d, e) + e, e), False
+        except Exception:
+            return None, True
+
     def extract_function_code(self, funcname):
         """ @returns argnames, code """
         func_m = re.search(
@@ -914,13 +999,15 @@ class JSInterpreter(object):
                 \((?P<args>[^)]*)\)\s*
                 (?P<code>{.+})''' % {'name': re.escape(funcname)},
             self.code)
-        code, _ = self._separate_at_paren(func_m.group('code'))  # refine the match
         if func_m is None:
             raise self.Exception('Could not find JS function "{funcname}"'.format(**locals()))
+        code, _ = self._separate_at_paren(func_m.group('code'))  # refine the match
         return self.build_arglist(func_m.group('args')), code
 
     def extract_function(self, funcname):
-        return self.extract_function_from_code(*self.extract_function_code(funcname))
+        return function_with_repr(
+            self.extract_function_from_code(*self.extract_function_code(funcname)),
+            'F<%s>' % (funcname, ))
 
     def extract_function_from_code(self, argnames, code, *global_stack):
         local_vars = {}

youtube_dl/options.py

@@ -11,6 +11,7 @@ from .compat import (
     compat_get_terminal_size,
     compat_getenv,
     compat_kwargs,
+    compat_open as open,
     compat_shlex_split,
 )
 from .utils import (
@@ -41,14 +42,11 @@ def _hide_login_info(opts):
 def parseOpts(overrideArguments=None):
     def _readOptions(filename_bytes, default=[]):
         try:
-            optionf = open(filename_bytes)
+            optionf = open(filename_bytes, encoding=preferredencoding())
         except IOError:
             return default  # silently skip if file is not present
         try:
-            # FIXME: https://github.com/ytdl-org/youtube-dl/commit/dfe5fa49aed02cf36ba9f743b11b0903554b5e56
             contents = optionf.read()
-            if sys.version_info < (3,):
-                contents = contents.decode(preferredencoding())
             res = compat_shlex_split(contents, comments=True)
         finally:
             optionf.close()
@@ -546,12 +544,14 @@ def parseOpts(overrideArguments=None):
     workarounds.add_option(
         '--referer',
         metavar='URL', dest='referer', default=None,
-        help='Specify a custom referer, use if the video access is restricted to one domain',
+        help='Specify a custom Referer: use if the video access is restricted to one domain',
     )
     workarounds.add_option(
         '--add-header',
         metavar='FIELD:VALUE', dest='headers', action='append',
-        help='Specify a custom HTTP header and its value, separated by a colon \':\'. You can use this option multiple times',
+        help=('Specify a custom HTTP header and its value, separated by a colon \':\'. You can use this option multiple times. '
+              'NB Use --cookies rather than adding a Cookie header if its contents may be sensitive; '
+              'data from a Cookie header will be sent to all domains, not just the one intended')
     )
     workarounds.add_option(
         '--bidi-workaround',
@@ -733,9 +733,13 @@ def parseOpts(overrideArguments=None):
         '--no-part',
         action='store_true', dest='nopart', default=False,
         help='Do not use .part files - write directly into output file')
+    filesystem.add_option(
+        '--mtime',
+        action='store_true', dest='updatetime', default=True,
+        help='Use the Last-modified header to set the file modification time (default)')
     filesystem.add_option(
         '--no-mtime',
-        action='store_false', dest='updatetime', default=True,
+        action='store_false', dest='updatetime',
         help='Do not use the Last-modified header to set the file modification time')
     filesystem.add_option(
         '--write-description',

youtube_dl/postprocessor/embedthumbnail.py

@@ -18,6 +18,8 @@ from ..utils import (
     shell_quote,
 )
 
+from ..compat import compat_open as open
+
 
 class EmbedThumbnailPPError(PostProcessingError):
     pass

youtube_dl/postprocessor/ffmpeg.py

@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import io
 import os
 import subprocess
 import time
@@ -9,6 +8,7 @@ import re
 
 from .common import AudioConversionError, PostProcessor
 
+from ..compat import compat_open as open
 from ..utils import (
     encodeArgument,
     encodeFilename,
@@ -493,7 +493,7 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
         chapters = info.get('chapters', [])
         if chapters:
             metadata_filename = replace_extension(filename, 'meta')
-            with io.open(metadata_filename, 'wt', encoding='utf-8') as f:
+            with open(metadata_filename, 'w', encoding='utf-8') as f:
                 def ffmpeg_escape(text):
                     return re.sub(r'(=|;|#|\\|\n)', r'\\\1', text)
 
@@ -636,7 +636,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
                 with open(dfxp_file, 'rb') as f:
                     srt_data = dfxp2srt(f.read())
 
-                with io.open(srt_file, 'wt', encoding='utf-8') as f:
+                with open(srt_file, 'w', encoding='utf-8') as f:
                     f.write(srt_data)
                 old_file = srt_file
 
@@ -652,7 +652,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
 
             self.run_ffmpeg(old_file, new_file, ['-f', new_format])
 
-            with io.open(new_file, 'rt', encoding='utf-8') as f:
+            with open(new_file, 'r', encoding='utf-8') as f:
                 subs[lang] = {
                     'ext': new_ext,
                     'data': f.read(),

youtube_dl/swfinterp.py

@@ -727,7 +727,7 @@ class SWFInterpreter(object):
                             stack.append(res)
                             continue
 
-                        assert isinstance(obj, (dict, _ScopeDict)),\
+                        assert isinstance(obj, (dict, _ScopeDict)), \
                             'Accessing member %r on %r' % (pname, obj)
                         res = obj.get(pname, undefined)
                         stack.append(res)

youtube_dl/update.py

@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-import io
 import json
 import traceback
 import hashlib
@@ -9,7 +8,10 @@ import subprocess
 import sys
 from zipimport import zipimporter
 
-from .compat import compat_realpath
+from .compat import (
+    compat_open as open,
+    compat_realpath,
+)
 from .utils import encode_compat_str
 
 from .version import __version__
@@ -127,7 +129,7 @@ def update_self(to_screen, verbose, opener):
 
         try:
             bat = os.path.join(directory, 'youtube-dl-updater.bat')
-            with io.open(bat, 'w') as batfile:
+            with open(bat, 'w') as batfile:
                 batfile.write('''
 @echo off
 echo Waiting for file handle to be closed ...