libfprint/tests/virtual-image.py

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#!/usr/bin/env python3
import gi
gi.require_version('FPrint', '2.0')
from gi.repository import FPrint, GLib, Gio
import os
import sys
import unittest
import socket
import struct
import shutil
import glob
import cairo
import tempfile
class Connection:
def __init__(self, addr):
self.addr = addr
def __enter__(self):
self.con = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.con.connect(self.addr)
return self.con
def __exit__(self, exc_type, exc_val, exc_tb):
self.con.close()
del self.con
def load_image(img):
png = cairo.ImageSurface.create_from_png(img)
# Cairo wants 4 byte aligned rows, so just add a few pixel if necessary
w = png.get_width()
h = png.get_height()
w = (w + 3) // 4 * 4
h = (h + 3) // 4 * 4
img = cairo.ImageSurface(cairo.Format.A8, w, h)
cr = cairo.Context(img)
cr.set_source_rgba(1, 1, 1, 1)
cr.paint()
cr.set_source_rgba(0, 0, 0, 0)
cr.set_operator(cairo.OPERATOR_SOURCE)
cr.set_source_surface(png)
cr.paint()
return img
if hasattr(os.environ, 'MESON_SOURCE_ROOT'):
root = os.environ['MESON_SOURCE_ROOT']
else:
root = os.path.join(os.path.dirname(__file__), '..')
imgdir = os.path.join(root, 'examples', 'prints')
ctx = GLib.main_context_default()
class VirtualImage(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.tmpdir = tempfile.mkdtemp(prefix='libfprint-')
cls.sockaddr = os.path.join(cls.tmpdir, 'virtual-image.socket')
os.environ['FP_VIRTUAL_IMAGE'] = cls.sockaddr
cls.ctx = FPrint.Context()
cls.dev = None
for dev in cls.ctx.get_devices():
# We might have a USB device in the test system that needs skipping
if dev.get_driver() == 'virtual_image':
cls.dev = dev
break
assert cls.dev is not None, "You need to compile with virtual_image for testing"
cls.prints = {}
for f in glob.glob(os.path.join(imgdir, '*.png')):
n = os.path.basename(f)[:-4]
cls.prints[n] = load_image(f)
@classmethod
def tearDownClass(cls):
shutil.rmtree(cls.tmpdir)
def setUp(self):
self.dev.open_sync()
def tearDown(self):
self.dev.close_sync()
def report_finger(self, state):
with Connection(self.sockaddr) as con:
con.write(struct.pack('ii', -1, 1 if state else 0))
def send_image(self, image):
img = self.prints[image]
with Connection(self.sockaddr) as con:
mem = img.get_data()
mem = mem.tobytes()
assert len(mem) == img.get_width() * img.get_height()
encoded_img = struct.pack('ii', img.get_width(), img.get_height())
encoded_img += mem
con.sendall(encoded_img)
def test_capture_prevents_close(self):
cancel = Gio.Cancellable()
def cancelled_cb(dev, res, obj):
print("Capture operation finished")
with self.assertRaises(GLib.GError) as cm:
dev.capture_finish(res)
assert cm.exception.matches(Gio.io_error_quark(), Gio.IOErrorEnum.CANCELLED)
print("Capture cancelled as expected")
obj._cancelled = True
self._cancelled = False
self.dev.capture(True, cancel, cancelled_cb, self)
with self.assertRaises(GLib.GError) as cm:
self.dev.close_sync()
assert cm.exception.matches(FPrint.device_error_quark(), FPrint.DeviceError.BUSY)
cancel.cancel()
while not self._cancelled:
ctx.iteration(True)
def enroll_print(self, image):
self._step = 0
self._enrolled = None
def progress_cb(dev, step, fp, user_data):
print('Print was processed, continuing')
self._step = step
def done_cb(dev, res):
print("Enroll done")
fp = dev.enroll_finish(res)
self._enrolled = fp
template = FPrint.Print.new(self.dev)
template.props.finger = FPrint.Finger.LEFT_THUMB
template.props.username = "testuser"
template.props.description = "test print"
datetime = GLib.DateTime.new_now_local()
date = GLib.Date()
date.set_dmy(*datetime.get_ymd()[::-1])
template.props.enroll_date = date
self.dev.enroll(template, None, progress_cb, tuple(), done_cb)
# Note: Assumes 5 enroll steps for this device!
self.send_image(image)
while self._step < 1:
ctx.iteration(True)
self.send_image(image)
while self._step < 2:
ctx.iteration(True)
self.send_image(image)
while self._step < 3:
ctx.iteration(True)
self.send_image(image)
while self._step < 4:
ctx.iteration(True)
self.send_image(image)
while self._enrolled is None:
ctx.iteration(True)
return self._enrolled
def test_enroll_verify(self):
done = False
def verify_cb(dev, res):
match, fp = dev.verify_finish(res)
self._verify_match = match
self._verify_fp = fp
fp_whorl = self.enroll_print('whorl')
self._verify_match = None
self._verify_fp = None
self.dev.verify(fp_whorl, None, verify_cb)
self.send_image('whorl')
while self._verify_match is None:
ctx.iteration(True)
assert(self._verify_match)
self._verify_match = None
self._verify_fp = None
self.dev.verify(fp_whorl, None, verify_cb)
self.send_image('tented_arch')
while self._verify_match is None:
ctx.iteration(True)
assert(not self._verify_match)
def test_identify(self):
done = False
def verify_cb(dev, res):
r, fp = dev.verify_finish(res)
self._verify_match = r
self._verify_fp = fp
fp_whorl = self.enroll_print('whorl')
fp_tented_arch = self.enroll_print('tented_arch')
def identify_cb(dev, res):
print('Identify finished')
self._identify_match, self._identify_fp = self.dev.identify_finish(res)
self._identify_fp = None
self.dev.identify([fp_whorl, fp_tented_arch], None, identify_cb)
self.send_image('tented_arch')
while self._identify_fp is None:
ctx.iteration(True)
assert(self._identify_match is fp_tented_arch)
self._identify_fp = None
self.dev.identify([fp_whorl, fp_tented_arch], None, identify_cb)
self.send_image('whorl')
while self._identify_fp is None:
ctx.iteration(True)
assert(self._identify_match is fp_whorl)
def test_verify_serialized(self):
done = False
def verify_cb(dev, res):
r, fp = dev.verify_finish(res)
self._verify_match = r
self._verify_fp = fp
fp_whorl = self.enroll_print('whorl')
fp_data = fp_whorl.serialize()
fp_whorl_new = FPrint.Print.deserialize(fp_data)
# The serialized/deserialized prints need to be equal
assert fp_whorl.equal(fp_whorl_new)
datetime = GLib.DateTime.new_now_local()
date = GLib.Date()
date.set_dmy(*datetime.get_ymd()[::-1])
assert fp_whorl_new.props.username == "testuser"
assert fp_whorl_new.props.description == "test print"
assert fp_whorl_new.props.finger == FPrint.Finger.LEFT_THUMB
assert date.compare(fp_whorl_new.props.enroll_date) == 0
self._verify_match = None
self._verify_fp = None
self.dev.verify(fp_whorl_new, None, verify_cb)
self.send_image('whorl')
while self._verify_match is None:
ctx.iteration(True)
assert(self._verify_match)
self._verify_match = None
self._verify_fp = None
self.dev.verify(fp_whorl_new, None, verify_cb)
self.send_image('tented_arch')
while self._verify_match is None:
ctx.iteration(True)
assert(not self._verify_match)
# avoid writing to stderr
unittest.main(testRunner=unittest.TextTestRunner(stream=sys.stdout, verbosity=2))