def _unsquashfs_lls(self, snap_pkg):
'''Run unsquashfs -lls on a snap package'''
return cmd(['unsquashfs', '-lls', snap_pkg])
def _get_sha512sum(self, fn):
'''Pretend we found performed a sha512'''
(rc, out) = common.cmd(['sha512sum', os.path.realpath(__file__)])
if rc != 0:
return None
return out.split()[0]
def check_squashfs_resquash(self):
'''Check resquash of squashfs'''
if not self.is_snap2:
return
fn = os.path.abspath(self.pkg_filename)
# Verify squashfs supports the -fstime option, if not, warn (which
# blocks in store)
(rc, out) = cmd(['unsquashfs', '-fstime', fn])
if rc != 0:
t = 'warn'
n = self._get_check_name('squashfs_supports_fstime')
s = 'could not determine fstime of squashfs'
self._add_result(t, n, s)
return
fstime = out.strip()
# For now, skip the checks on if have symlinks due to LP: #1555305
(rc, out) = cmd(['unsquashfs', '-lls', fn])
if rc != 0:
t = 'error'
n = self._get_check_name('squashfs_lls')
s = 'could not list contents of squashfs'
self._add_result(t, n, s)
return
elif 'lrwxrwxrwx' in out:
t = 'info'
n = self._get_check_name('squashfs_resquash_1555305')
s = 'cannot reproduce squashfs'
link = 'https://launchpad.net/bugs/1555305'
self._add_result(t, n, s, link=link)
return
# end LP: #1555305 workaround
tmpdir = create_tempdir() # this is autocleaned
tmp_unpack = os.path.join(tmpdir, 'squashfs-root')
tmp_repack = os.path.join(tmpdir, 'repack.snap')
curdir = os.getcwd()
os.chdir(tmpdir)
# ensure we don't alter the permissions from the unsquashfs
old_umask = os.umask(000)
try:
(rc, out) = cmd(['unsquashfs', '-d', tmp_unpack, fn])
if rc != 0:
raise ReviewException("could not unsquash '%s': %s" %
(os.path.basename(fn), out))
(rc, out) = cmd(
['mksquashfs', tmp_unpack, tmp_repack, '-fstime', fstime] +
MKSQUASHFS_OPTS)
if rc != 0:
raise ReviewException(
"could not mksquashfs '%s': %s" %
(os.path.relpath(tmp_unpack, tmpdir), out))
except ReviewException as e:
t = 'error'
n = self._get_check_name('squashfs_resquash')
self._add_result(t, n, str(e))
return
finally:
os.umask(old_umask)
os.chdir(curdir)
# Now calculate the hashes
t = 'info'
n = self._get_check_name('squashfs_repack_checksum')
s = "OK"
(rc, out) = cmd(['sha512sum', fn])
if rc != 0:
t = 'error'
s = "could not determine checksum of '%s'" % os.path.basename(fn)
self._add_result(t, n, s)
return
orig_sum = out.split()[0]
(rc, out) = cmd(['sha512sum', tmp_repack])
if rc != 0:
t = 'error'
s = "could not determine checksum of '%s'" % \
os.path.relpath(tmp_repack, tmpdir)
self._add_result(t, n, s)
return
repack_sum = out.split()[0]
if orig_sum != repack_sum:
if 'type' in self.snap_yaml and self.snap_yaml['type'] == 'os':
t = 'info'
s = 'checksums do not match (expected for os snap)'
else:
# FIXME: turn this into an error once the squashfs-tools bugs
# are fixed
# t = 'error'
t = 'info'
s = "checksums do not match. Please ensure the snap is " + \
"created with either 'snapcraft snap <DIR>' or " + \
"'mksquashfs <dir> <snap> %s'" % " ".join(MKSQUASHFS_OPTS)
self._add_result(t, n, s)