releasetools: Add tests for common.ReadApkCerts(). (818ddf5e) · Commits · e / os / android_build

tools/releasetools/common.py

+60 −39

Original line number	Diff line number	Diff line
		@@ -792,11 +792,22 @@ def CheckSize(data, target, info_dict):


		def ReadApkCerts(tf_zip):
		"""Given a target_files ZipFile, parse the META/apkcerts.txt file
		and return a tuple with the following elements: (1) a dictionary that maps
		packages to certs (based on the "certificate" and "private_key" attributes
		in the file. (2) A string representing the extension of compressed APKs in
		the target files (e.g ".gz" ".bro")."""
		"""Parses the APK certs info from a given target-files zip.

		Given a target-files ZipFile, parses the META/apkcerts.txt entry and returns a
		tuple with the following elements: (1) a dictionary that maps packages to
		certs (based on the "certificate" and "private_key" attributes in the file;
		(2) a string representing the extension of compressed APKs in the target files
		(e.g ".gz", ".bro").

		Args:
		tf_zip: The input target_files ZipFile (already open).

		Returns:
		(certmap, ext): certmap is a dictionary that maps packages to certs; ext is
		the extension string of compressed APKs (e.g. ".gz"), or None if there's
		no compressed APKs.
		"""
		certmap = {}
		compressed_extension = None

		@@ -812,15 +823,19 @@ def ReadApkCerts(tf_zip):
		line = line.strip()
		if not line:
		continue
		m = re.match(r'^name="(?P<NAME>.)"\s+certificate="(?P<CERT>.)"\s+'
		m = re.match(
		r'^name="(?P<NAME>.)"\s+certificate="(?P<CERT>.)"\s+'
		r'private_key="(?P<PRIVKEY>.?)"(\s+compressed="(?P<COMPRESSED>.)")?$',
		line)
		if m:
		if not m:
		continue

		matches = m.groupdict()
		cert = matches["CERT"]
		privkey = matches["PRIVKEY"]
		name = matches["NAME"]
		this_compressed_extension = matches["COMPRESSED"]

		public_key_suffix_len = len(OPTIONS.public_key_suffix)
		private_key_suffix_len = len(OPTIONS.private_key_suffix)
		if cert in SPECIAL_CERT_STRINGS and not privkey:
		@@ -830,23 +845,29 @@ def ReadApkCerts(tf_zip):
		cert[:-public_key_suffix_len] == privkey[:-private_key_suffix_len]):
		certmap[name] = cert[:-public_key_suffix_len]
		else:
		raise ValueError("failed to parse line from apkcerts.txt:\n" + line)
		if this_compressed_extension:
		raise ValueError("Failed to parse line from apkcerts.txt:\n" + line)

		if not this_compressed_extension:
		continue

		# Only count the installed files.
		filename = name + '.' + this_compressed_extension
		if filename not in installed_files:
		continue

		# Make sure that all the values in the compression map have the same
		# extension. We don't support multiple compression methods in the same
		# system image.
		if compressed_extension:
		if this_compressed_extension != compressed_extension:
		raise ValueError("multiple compressed extensions : %s vs %s",
		(compressed_extension, this_compressed_extension))
		raise ValueError(
		"Multiple compressed extensions: {} vs {}".format(
		compressed_extension, this_compressed_extension))
		else:
		compressed_extension = this_compressed_extension

		return (certmap, ("." + compressed_extension) if compressed_extension else None)
		return (certmap,
		("." + compressed_extension) if compressed_extension else None)


		COMMON_DOCSTRING = """

tools/releasetools/test_common.py

+122 −0

Original line number	Diff line number	Diff line
		@@ -353,6 +353,128 @@ class CommonZipTest(unittest.TestCase):
		os.remove(zip_file.name)


		class CommonApkUtilsTest(unittest.TestCase):
		"""Tests the APK utils related functions."""

		APKCERTS_TXT1 = (
		'name="RecoveryLocalizer.apk" certificate="certs/devkey.x509.pem"'
		' private_key="certs/devkey.pk8"\n'
		'name="Settings.apk"'
		' certificate="build/target/product/security/platform.x509.pem"'
		' private_key="build/target/product/security/platform.pk8"\n'
		'name="TV.apk" certificate="PRESIGNED" private_key=""\n'
		)

		APKCERTS_CERTMAP1 = {
		'RecoveryLocalizer.apk' : 'certs/devkey',
		'Settings.apk' : 'build/target/product/security/platform',
		'TV.apk' : 'PRESIGNED',
		}

		APKCERTS_TXT2 = (
		'name="Compressed1.apk" certificate="certs/compressed1.x509.pem"'
		' private_key="certs/compressed1.pk8" compressed="gz"\n'
		'name="Compressed2a.apk" certificate="certs/compressed2.x509.pem"'
		' private_key="certs/compressed2.pk8" compressed="gz"\n'
		'name="Compressed2b.apk" certificate="certs/compressed2.x509.pem"'
		' private_key="certs/compressed2.pk8" compressed="gz"\n'
		'name="Compressed3.apk" certificate="certs/compressed3.x509.pem"'
		' private_key="certs/compressed3.pk8" compressed="gz"\n'
		)

		APKCERTS_CERTMAP2 = {
		'Compressed1.apk' : 'certs/compressed1',
		'Compressed2a.apk' : 'certs/compressed2',
		'Compressed2b.apk' : 'certs/compressed2',
		'Compressed3.apk' : 'certs/compressed3',
		}

		APKCERTS_TXT3 = (
		'name="Compressed4.apk" certificate="certs/compressed4.x509.pem"'
		' private_key="certs/compressed4.pk8" compressed="xz"\n'
		)

		APKCERTS_CERTMAP3 = {
		'Compressed4.apk' : 'certs/compressed4',
		}

		def tearDown(self):
		common.Cleanup()

		@staticmethod
		def _write_apkcerts_txt(apkcerts_txt, additional=None):
		if additional is None:
		additional = []
		target_files = common.MakeTempFile(suffix='.zip')
		with zipfile.ZipFile(target_files, 'w') as target_files_zip:
		target_files_zip.writestr('META/apkcerts.txt', apkcerts_txt)
		for entry in additional:
		target_files_zip.writestr(entry, '')
		return target_files

		def test_ReadApkCerts_NoncompressedApks(self):
		target_files = self._write_apkcerts_txt(self.APKCERTS_TXT1)
		with zipfile.ZipFile(target_files, 'r') as input_zip:
		certmap, ext = common.ReadApkCerts(input_zip)

		self.assertDictEqual(self.APKCERTS_CERTMAP1, certmap)
		self.assertIsNone(ext)

		def test_ReadApkCerts_CompressedApks(self):
		# We have "installed" Compressed1.apk.gz only. Note that Compressed3.apk is
		# not stored in '.gz' format, so it shouldn't be considered as installed.
		target_files = self._write_apkcerts_txt(
		self.APKCERTS_TXT2,
		['Compressed1.apk.gz', 'Compressed3.apk'])

		with zipfile.ZipFile(target_files, 'r') as input_zip:
		certmap, ext = common.ReadApkCerts(input_zip)

		self.assertDictEqual(self.APKCERTS_CERTMAP2, certmap)
		self.assertEqual('.gz', ext)

		# Alternative case with '.xz'.
		target_files = self._write_apkcerts_txt(
		self.APKCERTS_TXT3, ['Compressed4.apk.xz'])

		with zipfile.ZipFile(target_files, 'r') as input_zip:
		certmap, ext = common.ReadApkCerts(input_zip)

		self.assertDictEqual(self.APKCERTS_CERTMAP3, certmap)
		self.assertEqual('.xz', ext)

		def test_ReadApkCerts_CompressedAndNoncompressedApks(self):
		target_files = self._write_apkcerts_txt(
		self.APKCERTS_TXT1 + self.APKCERTS_TXT2,
		['Compressed1.apk.gz', 'Compressed3.apk'])

		with zipfile.ZipFile(target_files, 'r') as input_zip:
		certmap, ext = common.ReadApkCerts(input_zip)

		certmap_merged = self.APKCERTS_CERTMAP1.copy()
		certmap_merged.update(self.APKCERTS_CERTMAP2)
		self.assertDictEqual(certmap_merged, certmap)
		self.assertEqual('.gz', ext)

		def test_ReadApkCerts_MultipleCompressionMethods(self):
		target_files = self._write_apkcerts_txt(
		self.APKCERTS_TXT2 + self.APKCERTS_TXT3,
		['Compressed1.apk.gz', 'Compressed4.apk.xz'])

		with zipfile.ZipFile(target_files, 'r') as input_zip:
		self.assertRaises(ValueError, common.ReadApkCerts, input_zip)

		def test_ReadApkCerts_MismatchingKeys(self):
		malformed_apkcerts_txt = (
		'name="App1.apk" certificate="certs/cert1.x509.pem"'
		' private_key="certs/cert2.pk8"\n'
		)
		target_files = self._write_apkcerts_txt(malformed_apkcerts_txt)

		with zipfile.ZipFile(target_files, 'r') as input_zip:
		self.assertRaises(ValueError, common.ReadApkCerts, input_zip)


		class InstallRecoveryScriptFormatTest(unittest.TestCase):
		"""Checks the format of install-recovery.sh.