mirror of
https://github.com/ytdl-org/youtube-dl.git
synced 2024-11-23 10:41:52 +00:00
89 lines
3.4 KiB
Python
Executable file
89 lines
3.4 KiB
Python
Executable file
#!/usr/bin/env python
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import sys, os
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import json, hashlib
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try:
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import urllib.request as compat_urllib_request
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except ImportError: # Python 2
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import urllib2 as compat_urllib_request
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def rsa_verify(message, signature, key):
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from struct import pack
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from hashlib import sha256
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from sys import version_info
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def b(x):
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if version_info[0] == 2: return x
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else: return x.encode('latin1')
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assert(type(message) == type(b('')))
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block_size = 0
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n = key[0]
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while n:
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block_size += 1
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n >>= 8
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signature = pow(int(signature, 16), key[1], key[0])
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raw_bytes = []
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while signature:
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raw_bytes.insert(0, pack("B", signature & 0xFF))
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signature >>= 8
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signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes)
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if signature[0:2] != b('\x00\x01'): return False
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signature = signature[2:]
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if not b('\x00') in signature: return False
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signature = signature[signature.index(b('\x00'))+1:]
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if not signature.startswith(b('\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20')): return False
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signature = signature[19:]
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if signature != sha256(message).digest(): return False
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return True
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sys.stderr.write(u'Hi! We changed distribution method and now youtube-dl needs to update itself one more time.\n')
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sys.stderr.write(u'This will only happen once. Simply press enter to go on. Sorry for the trouble!\n')
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sys.stderr.write(u'From now on, get the binaries from http://rg3.github.io/youtube-dl/download.html, not from the git repository.\n\n')
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try:
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raw_input()
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except NameError: # Python 3
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input()
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filename = sys.argv[0]
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UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
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VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
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JSON_URL = UPDATE_URL + 'versions.json'
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UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
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if not os.access(filename, os.W_OK):
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sys.exit('ERROR: no write permissions on %s' % filename)
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try:
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versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8')
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versions_info = json.loads(versions_info)
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except:
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sys.exit(u'ERROR: can\'t obtain versions info. Please try again later.')
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if not 'signature' in versions_info:
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sys.exit(u'ERROR: the versions file is not signed or corrupted. Aborting.')
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signature = versions_info['signature']
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del versions_info['signature']
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if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
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sys.exit(u'ERROR: the versions file signature is invalid. Aborting.')
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version = versions_info['versions'][versions_info['latest']]
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try:
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urlh = compat_urllib_request.urlopen(version['bin'][0])
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newcontent = urlh.read()
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urlh.close()
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except (IOError, OSError) as err:
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sys.exit('ERROR: unable to download latest version')
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newcontent_hash = hashlib.sha256(newcontent).hexdigest()
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if newcontent_hash != version['bin'][1]:
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sys.exit(u'ERROR: the downloaded file hash does not match. Aborting.')
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try:
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with open(filename, 'wb') as outf:
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outf.write(newcontent)
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except (IOError, OSError) as err:
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sys.exit('ERROR: unable to overwrite current version')
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sys.stderr.write(u'Done! Now you can run youtube-dl.\n')
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