def _write_update_to_disk(self):
# Writes updated binary to disk
log.debug('Writing update to disk')
filename_key = '{}*{}*{}*{}*{}'.format(u'updates', self.name,
self.highest_version,
self.plat,
u'filename')
filename = self.star_access_update_data.get(filename_key)
if filename is None:
raise PatcherError('Filename missing in version file')
with ChDir(self.update_folder):
try:
with open(filename, u'wb') as f:
f.write(self.new_binary)
except IOError:
# Removes file is it somehow got created
if os.path.exists(filename):
os.remove(filename)
log.error(u'Failed to open file for writing')
raise PatcherError(u'Failed to open file for writing')
else:
file_info = self._current_file_info(self.name,
self.highest_version)
new_file_hash = file_info['file_hash']
log.debug(u'checking file hash match')
if new_file_hash != get_package_hashes(filename):
log.error(u'File hash does not match')
os.remove(filename)
raise PatcherError(u'Patched file hash bad checksum')
log.debug('Wrote update file')
def _write_update_to_disk(self):
# Writes updated binary to disk
log.debug('Writing update to disk')
filename_key = '{}*{}*{}*{}*{}'.format(u'updates', self.name,
self.highest_version, self.plat,
u'filename')
filename = self.star_access_update_data.get(filename_key)
if filename is None:
raise PatcherError('Filename missing in version file')
with ChDir(self.update_folder):
try:
with open(filename, u'wb') as f:
f.write(self.new_binary)
except IOError:
# Removes file is it somehow got created
if os.path.exists(filename):
os.remove(filename)
log.error(u'Failed to open file for writing')
raise PatcherError(u'Failed to open file for writing')
else:
file_info = self._current_file_info(self.name,
self.highest_version)
new_file_hash = file_info['file_hash']
log.debug(u'checking file hash match')
if new_file_hash != get_package_hashes(filename):
log.error(u'File hash does not match')
os.remove(filename)
raise PatcherError(u'Patched file hash bad checksum')
log.debug('Wrote update file')
def extract_info(self, package):
"""Gets version number, platform & hash for package.
Args:
package (str): filename
"""
if os.path.splitext(package)[1].lower() not in \
self.supported_extensions:
msg = u'Not a supported archive format: {}'.format(package)
self.info['reason'] = msg
log.error(msg)
return
try:
self.version = get_version_number(package)
except UtilsError:
msg = u'Package version not formatted correctly'
self.info[u'reason'] = msg
log.error(msg)
return
try:
self.platform = parse_platform(package)
except UtilsError:
msg = u'Package platform not formatted correctly'
self.info[u'reason'] = msg
log.error(msg)
return
# No need to get any more info if above failed
self.name = self._get_package_name(package)
self.file_hash = get_package_hashes(package)
self.info[u'status'] = True
def _verify_installed_binary(self):
# Verifies currently installed binary against known hash
log.debug(u'Checking for current installed binary to patch')
# I just really like using this ChDir context
# manager. Even sent the developer a cup of coffee
with ChDir(self.update_folder):
if not os.path.exists(self.current_filename):
log.debug(u'Cannot find binary to patch')
return False
installed_file_hash = get_package_hashes(self.current_filename)
if self.current_file_hash != installed_file_hash:
log.debug(u'Binary hash mismatch')
return False
with open(self.current_filename, u'rb') as f:
self.og_binary = f.read()
os.remove(self.current_filename)
log.debug(u'Binary found and verified')
return True
def _verify_installed_binary(self):
# Verifies currently installed binary against known hash
log.debug(u'Checking for current installed binary to patch')
# I just really like using this ChDir context
# manager. Even sent the developer a cup of coffee
with ChDir(self.update_folder):
if not os.path.exists(self.current_filename):
log.debug(u'Cannot find binary to patch')
return False
installed_file_hash = get_package_hashes(self.current_filename)
if self.current_file_hash != installed_file_hash:
log.debug(u'Binary hash mismatch')
return False
with open(self.current_filename, u'rb') as f:
self.og_binary = f.read()
os.remove(self.current_filename)
log.debug(u'Binary found and verified')
return True
def test_package_hash():
digest = 'cb44ec613a594f3b20e46b768c5ee780e0a9b66ac6d5ac1468ca4d3635c4aa9b'
assert digest == get_package_hashes('hash-test.txt')