def compare_zip_files(path1, path2, source=None):
differences = []
try:
with ZipFile(path1, 'r') as zip1:
with ZipFile(path2, 'r') as zip2:
# look up differences in content
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
for name in sorted(
set(zip1.namelist()).intersection(
zip2.namelist())):
# skip directories
if name.endswith('/'):
continue
logger.debug('extract member %s', name)
in_path1 = zip1.extract(name, temp_dir1)
in_path2 = zip2.extract(name, temp_dir2)
differences.extend(
debbindiff.comparators.compare_files(
in_path1, in_path2, source=name))
os.unlink(in_path1)
os.unlink(in_path2)
# look up differences in metadata
difference = Difference.from_command(Zipinfo, path1, path2)
if not difference:
# search harder
difference = Difference.from_command(
ZipinfoVerbose, path1, path2)
if difference:
differences.append(difference)
except BadZipfile:
logger.debug('Either %s or %s is not a zip file.' % (path1, path2))
# we'll fallback on binary comparison
return differences
def compare_iso9660_files(path1, path2, source=None):
differences = []
# compare metadata
differences.append(Difference.from_command(ISO9660PVD, path1, path2))
for extension in (None, 'joliet', 'rockridge'):
differences.append(Difference.from_command(ISO9660Listing, path1, path2, command_args=(extension,)))
# compare files contained in image
files1 = get_iso9660_names(path1)
files2 = get_iso9660_names(path2)
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
for name in sorted(set(files1).intersection(files2)):
logger.debug('extract file %s' % name)
in_path1 = os.path.join(temp_dir1, os.path.basename(name))
in_path2 = os.path.join(temp_dir2, os.path.basename(name))
with open(in_path1, 'w') as dest:
extract_from_iso9660(path1, name, dest)
with open(in_path2, 'w') as dest:
extract_from_iso9660(path2, name, dest)
differences.append(debbindiff.comparators.compare_files(
in_path1, in_path2, source=name))
return differences
def output_difference(difference, print_func, parents):
logger.debug('html output for %s', difference.source1)
sources = parents + [difference.source1]
print_func(u"<div class='difference'>")
try:
print_func(u"<div class='diffheader'>")
if difference.source1 == difference.source2:
print_func(u"<div><span class='source'>%s<span>"
% escape(difference.source1))
else:
print_func(u"<div><span class='source'>%s</span> vs.</div>"
% escape(difference.source1))
print_func(u"<div><span class='source'>%s</span>"
% escape(difference.source2))
anchor = '/'.join(sources[1:])
print_func(u" <a class='anchor' href='#%s' name='%s'>¶</a>" % (anchor, anchor))
print_func(u"</div>")
if difference.comment:
print_func(u"<div class='comment'>%s</div>"
% escape(difference.comment).replace('\n', '<br />'))
print_func(u"</div>")
if difference.unified_diff:
output_unified_diff(print_func, difference.unified_diff)
for detail in difference.details:
output_difference(detail, print_func, sources)
except PrintLimitReached:
logger.debug('print limit reached')
raise
finally:
print_func(u"</div>", force=True)
def compare_iso9660_files(path1, path2, source=None):
differences = []
# compare metadata
difference = Difference.from_command(ISO9660PVD, path1, path2)
if difference:
differences.append(difference)
for extension in (None, 'joliet', 'rockridge'):
difference = Difference.from_command(ISO9660Listing,
path1,
path2,
command_args=(extension, ))
if difference:
differences.append(difference)
# compare files contained in image
files1 = get_iso9660_names(path1)
files2 = get_iso9660_names(path2)
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
for name in sorted(set(files1).intersection(files2)):
logger.debug('extract file %s' % name)
in_path1 = os.path.join(temp_dir1, os.path.basename(name))
in_path2 = os.path.join(temp_dir2, os.path.basename(name))
with open(in_path1, 'w') as dest:
extract_from_iso9660(path1, name, dest)
with open(in_path2, 'w') as dest:
extract_from_iso9660(path2, name, dest)
differences.extend(
debbindiff.comparators.compare_files(in_path1,
in_path2,
source=name))
return differences
def compare_meta(path1, path2):
logger.debug('compare_meta(%s, %s)' % (path1, path2))
differences = []
try:
difference = Difference.from_command(Stat, path1, path2)
if difference:
differences.append(difference)
except RequiredToolNotFound:
logger.warn("'stat' not found! Is PATH wrong?")
try:
lsattr1 = lsattr(path1)
lsattr2 = lsattr(path2)
difference = Difference.from_unicode(
lsattr1, lsattr2, path1, path2, source="lattr")
if difference:
differences.append(difference)
except RequiredToolNotFound:
logger.info("Unable to find 'lsattr'.")
try:
difference = Difference.from_command(Getfacl, path1, path2)
if difference:
differences.append(difference)
except RequiredToolNotFound:
logger.info("Unable to find 'getfacl'.")
return differences
def compare_zip_files(path1, path2, source=None):
differences = []
try:
with ZipFile(path1, 'r') as zip1:
with ZipFile(path2, 'r') as zip2:
# look up differences in content
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
for name in sorted(set(zip1.namelist())
.intersection(zip2.namelist())):
# skip directories
if name.endswith('/'):
continue
logger.debug('extract member %s', name)
in_path1 = zip1.extract(name, temp_dir1)
in_path2 = zip2.extract(name, temp_dir2)
differences.append(
debbindiff.comparators.compare_files(
in_path1, in_path2,
source=name))
os.unlink(in_path1)
os.unlink(in_path2)
# look up differences in metadata
difference = Difference.from_command(Zipinfo, path1, path2)
if not difference:
# search harder
difference = Difference.from_command(ZipinfoVerbose, path1, path2)
differences.append(difference)
except BadZipfile:
logger.debug('Either %s or %s is not a zip file.' % (path1, path2))
# we'll fallback on binary comparison
return differences
def run_diff(fd1, fd2, end_nl_q1, end_nl_q2):
logger.debug('running diff')
cmd = ['diff', '-au7', '/dev/fd/%d' % fd1, '/dev/fd/%d' % fd2]
def close_fds():
fds = [int(fd) for fd in os.listdir('/dev/fd')
if int(fd) not in (1, 2, fd1, fd2)]
for fd in fds:
try:
os.close(fd)
except OSError:
pass
p = subprocess.Popen(cmd, shell=False, bufsize=1,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
preexec_fn=close_fds)
p.stdin.close()
os.close(fd1)
os.close(fd2)
parser = DiffParser(p.stdout, end_nl_q1, end_nl_q2)
t_read = Thread(target=parser.parse)
t_read.daemon = True
t_read.start()
t_read.join()
p.wait()
if not parser.success and p.returncode not in (0, 1):
raise subprocess.CalledProcessError(cmd, p.returncode, output=diff)
if p.returncode == 0:
return None
return parser.diff
def output_difference(difference, print_func, parents):
logger.debug('html output for %s', difference.source1)
sources = parents + [difference.source1]
print_func(u"<div class='difference'>")
try:
print_func(u"<div class='diffheader'>")
if difference.source1 == difference.source2:
print_func(u"<div><span class='source'>%s<span>" %
escape(difference.source1))
else:
print_func(u"<div><span class='source'>%s</span> vs.</div>" %
escape(difference.source1))
print_func(u"<div><span class='source'>%s</span>" %
escape(difference.source2))
anchor = '/'.join(sources[1:])
print_func(u" <a class='anchor' href='#%s' name='%s'>¶</a>" %
(anchor, anchor))
print_func(u"</div>")
if difference.comment:
print_func(u"<div class='comment'>%s</div>" %
escape(difference.comment).replace('\n', '<br />'))
print_func(u"</div>")
if difference.unified_diff:
output_unified_diff(print_func, difference.unified_diff)
for detail in difference.details:
output_difference(detail, print_func, sources)
except PrintLimitReached:
logger.debug('print limit reached')
raise
finally:
print_func(u"</div>", force=True)
def extract_squashfs(path, destdir):
cmd = ['unsquashfs', '-n', '-f', '-d', destdir, path]
logger.debug("extracting %s into %s", path, destdir)
p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE)
p.communicate()
p.wait()
if p.returncode != 0:
logger.error('unsquashfs exited with error code %d', p.returncode)
def extract_cpio_archive(path, destdir):
cmd = ['cpio', '--no-absolute-filenames', '--quiet', '-idF',
os.path.abspath(path.encode('utf-8'))]
logger.debug("extracting %s into %s", path.encode('utf-8'), destdir)
p = subprocess.Popen(cmd, shell=False, cwd=destdir)
p.communicate()
p.wait()
if p.returncode != 0:
logger.error('cpio exited with error code %d', p.returncode)
def extract_cpio_archive(path, destdir):
cmd = [
'cpio', '--no-absolute-filenames', '--quiet', '-idF',
os.path.abspath(path.encode('utf-8'))
]
logger.debug("extracting %s into %s", path.encode('utf-8'), destdir)
p = subprocess.Popen(cmd, shell=False, cwd=destdir)
p.communicate()
p.wait()
if p.returncode != 0:
logger.error('cpio exited with error code %d', p.returncode)
def validate_checksums(self, check_hash="sha1"):
"""
Validate checksums for a package, using ``check_hack``'s type
to validate the package.
Valid ``check_hash`` types:
* sha1
* sha256
* md5
* md5sum
"""
logger.debug("validating %s checksums", check_hash)
for filename in self.get_files():
if check_hash == "sha1":
hash_type = hashlib.sha1()
checksums = self.get("Checksums-Sha1")
field_name = "sha1"
elif check_hash == "sha256":
hash_type = hashlib.sha256()
checksums = self.get("Checksums-Sha256")
field_name = "sha256"
elif check_hash == "md5":
hash_type = hashlib.md5()
checksums = self.get("Files")
field_name = "md5sum"
changed_files = None # appease pylint
for changed_files in checksums:
if changed_files['name'] == os.path.basename(filename):
break
else:
assert(
"get_files() returns different files than Files: knows?!")
with open(os.path.join(self._directory, filename), "rb") as fc:
while True:
chunk = fc.read(131072)
if not chunk:
break
hash_type.update(chunk)
fc.close()
if not hash_type.hexdigest() == changed_files[field_name]:
raise ChangesFileException(
"Checksum mismatch for file %s: %s != %s" % (
filename,
hash_type.hexdigest(),
changed_files[field_name]
))
else:
logger.debug("%s Checksum for file %s matches",
field_name, filename)
def validate_checksums(self, check_hash="sha1"):
"""
Validate checksums for a package, using ``check_hack``'s type
to validate the package.
Valid ``check_hash`` types:
* sha1
* sha256
* md5
* md5sum
"""
logger.debug("validating %s checksums", check_hash)
for filename in self.get_files():
if check_hash == "sha1":
hash_type = hashlib.sha1()
checksums = self.get("Checksums-Sha1")
field_name = "sha1"
elif check_hash == "sha256":
hash_type = hashlib.sha256()
checksums = self.get("Checksums-Sha256")
field_name = "sha256"
elif check_hash == "md5":
hash_type = hashlib.md5()
checksums = self.get("Files")
field_name = "md5sum"
changed_files = None # appease pylint
for changed_files in checksums:
if changed_files['name'] == os.path.basename(filename):
break
else:
assert (
"get_files() returns different files than Files: knows?!")
with open(os.path.join(self._directory, filename), "rb") as fc:
while True:
chunk = fc.read(131072)
if not chunk:
break
hash_type.update(chunk)
fc.close()
if not hash_type.hexdigest() == changed_files[field_name]:
raise ChangesFileException(
"Checksum mismatch for file %s: %s != %s" %
(filename, hash_type.hexdigest(),
changed_files[field_name]))
else:
logger.debug("%s Checksum for file %s matches", field_name,
filename)
def output_html(difference, css_url=None, print_func=None, max_page_size=None):
if print_func is None:
print_func = print
if max_page_size is None:
max_page_size = DEFAULT_MAX_PAGE_SIZE
print_func = create_limited_print_func(print_func, max_page_size)
try:
output_header(css_url, print_func)
output_difference(difference, print_func, [])
except PrintLimitReached:
logger.debug('print limit reached')
print_func(u"<div class='error'>Max output size reached.</div>",
force=True)
print_func(FOOTER % {'version': VERSION}, force=True)
def compare_unknown(path1, path2, source=None):
logger.debug("compare unknown path: %s and %s", path1, path2)
mime_type1 = guess_mime_type(path1)
mime_type2 = guess_mime_type(path2)
logger.debug("mime_type1: %s | mime_type2: %s", mime_type1, mime_type2)
if mime_type1.startswith('text/') and mime_type2.startswith('text/'):
encodings1 = re.findall(r'; charset=([^ ]+)', mime_type1)
encodings2 = re.findall(r'; charset=([^ ]+)', mime_type2)
if len(encodings1) > 0 and encodings1 == encodings2:
encoding = encodings1[0]
else:
encoding = None
return compare_text_files(path1, path2, encoding, source)
return compare_binary_files(path1, path2, source)
def compare_unknown(path1, path2, source=None):
logger.debug("compare unknown path: %s and %s", path1, path2)
mime_type1 = guess_mime_type(path1)
mime_type2 = guess_mime_type(path2)
logger.debug("mime_type1: %s | mime_type2: %s", mime_type1, mime_type2)
if mime_type1.startswith('text/') and mime_type2.startswith('text/'):
encodings1 = re.findall(r'; charset=([^ ]+)', mime_type1)
encodings2 = re.findall(r'; charset=([^ ]+)', mime_type2)
if len(encodings1) > 0 and encodings1 == encodings2:
encoding = encodings1[0]
else:
encoding = None
return compare_text_files(path1, path2, encoding, source)
return compare_binary_files(path1, path2, source)
def filter(self, line):
if not self._encoding:
if line == '':
logger.debug("unable to determine PO encoding, let's hope it's utf-8")
return self._header
self._header += line
found = Msgunfmt.CHARSET_RE.match(line)
if found:
self._encoding = found.group(1)
return self._header.decode(self._encoding).encode('utf-8')
return ''
if self._encoding != 'utf-8':
return line.decode(self._encoding).encode('utf-8')
else:
return line
def filter(self, line):
if not self._encoding:
self._header.write(line)
if line == '\n':
logger.debug("unable to determine PO encoding, let's hope it's utf-8")
self._encoding = 'utf-8'
return self._header.getvalue()
found = Msgunfmt.CHARSET_RE.match(line)
if found:
self._encoding = found.group(1).lower()
return self._header.getvalue().decode(self._encoding).encode('utf-8')
return ''
if self._encoding != 'utf-8':
return line.decode(self._encoding).encode('utf-8')
else:
return line
def filter(self, line):
if not self._encoding:
if line == '':
logger.debug(
"unable to determine PO encoding, let's hope it's utf-8")
return self._header
self._header += line
found = Msgunfmt.CHARSET_RE.match(line)
if found:
self._encoding = found.group(1)
return self._header.decode(self._encoding).encode('utf-8')
return ''
if self._encoding != 'utf-8':
return line.decode(self._encoding).encode('utf-8')
else:
return line
def output_html(differences,
css_url=None,
print_func=None,
max_page_size=None):
if print_func is None:
print_func = print
if max_page_size is None:
max_page_size = DEFAULT_MAX_PAGE_SIZE
print_func = create_limited_print_func(print_func, max_page_size)
try:
output_header(css_url, print_func)
for difference in differences:
output_difference(difference, print_func, [])
except PrintLimitReached:
logger.debug('print limit reached')
print_func(u"<div class='error'>Max output size reached.</div>",
force=True)
print_func(FOOTER % {'version': VERSION}, force=True)
def compare_directories(path1, path2, source=None):
differences = []
logger.debug('path1 files: %s' % sorted(set(os.listdir(path1))))
logger.debug('path2 files: %s' % sorted(set(os.listdir(path2))))
for name in sorted(set(os.listdir(path1)).intersection(set(os.listdir(path2)))):
logger.debug('compare %s' % name)
in_path1 = os.path.join(path1, name)
in_path2 = os.path.join(path2, name)
in_differences = debbindiff.comparators.compare_files(
in_path1, in_path2, source=name)
if not os.path.isdir(in_path1):
if in_differences:
in_differences[0].add_details(compare_meta(in_path1, in_path2))
else:
d = Difference(None, path1, path2, source=name)
d.add_details(compare_meta(in_path1, in_path2))
in_differences = [d]
differences.extend(in_differences)
ls1 = ls(path1)
ls2 = ls(path2)
difference = Difference.from_unicode(ls1, ls2, path1, path2, source="ls")
if difference:
differences.append(difference)
differences.extend(compare_meta(path1, path2))
if differences:
d = Difference(None, path1, path2, source=source)
d.add_details(differences)
return [d]
return []
def compare_tar_files(path1, path2, source=None):
differences = []
with tarfile.open(path1, 'r') as tar1:
with tarfile.open(path2, 'r') as tar2:
# look up differences in content
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
logger.debug('content1 %s', tar1.getnames())
logger.debug('content2 %s', tar2.getnames())
for name in sorted(set(tar1.getnames())
.intersection(tar2.getnames())):
member1 = tar1.getmember(name)
member2 = tar2.getmember(name)
if not member1.isfile() or not member2.isfile():
continue
logger.debug('extract member %s', name)
tar1.extract(name, temp_dir1)
tar2.extract(name, temp_dir2)
in_path1 = os.path.join(temp_dir1, name).decode('utf-8')
in_path2 = os.path.join(temp_dir2, name).decode('utf-8')
differences.append(
debbindiff.comparators.compare_files(
in_path1, in_path2,
source=name.decode('utf-8')))
os.unlink(in_path1)
os.unlink(in_path2)
# look up differences in file list and file metadata
content1 = get_tar_content(tar1).decode('utf-8')
content2 = get_tar_content(tar2).decode('utf-8')
differences.append(Difference.from_unicode(
content1, content2, path1, path2, source="metadata"))
return differences
def compare_deb_files(path1, path2, source=None):
differences = []
# look up differences in content
ar1 = ArFile(filename=path1)
ar2 = ArFile(filename=path2)
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
logger.debug('content1 %s', ar1.getnames())
logger.debug('content2 %s', ar2.getnames())
for name in sorted(set(ar1.getnames())
.intersection(ar2.getnames())):
logger.debug('extract member %s', name)
member1 = ar1.getmember(name)
member2 = ar2.getmember(name)
in_path1 = os.path.join(temp_dir1, name)
in_path2 = os.path.join(temp_dir2, name)
with open(in_path1, 'w') as f1:
f1.write(member1.read())
with open(in_path2, 'w') as f2:
f2.write(member2.read())
differences.extend(
debbindiff.comparators.compare_files(
in_path1, in_path2, source=name))
os.unlink(in_path1)
os.unlink(in_path2)
# look up differences in file list and file metadata
content1 = get_ar_content(path1)
content2 = get_ar_content(path2)
difference = Difference.from_unicode(
content1, content2, path1, path2, source="metadata")
if difference:
differences.append(difference)
return differences
def join(self):
ex_info = self.wait_for_exc_info()
if ex_info is None:
return
else:
except_type, except_class, tb = ex_info
logger.debug('Exception: %s' %
traceback.format_exception_only(except_type, except_class)[0].strip())
logger.debug('Traceback:')
for line in traceback.format_list(tb):
logger.debug(line[:-1])
raise except_type, except_class, None
def compare_tar_files(path1, path2, source=None):
differences = []
with tarfile.open(path1, 'r') as tar1:
with tarfile.open(path2, 'r') as tar2:
# look up differences in content
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
logger.debug('content1 %s', tar1.getnames())
logger.debug('content2 %s', tar2.getnames())
for name in sorted(
set(tar1.getnames()).intersection(
tar2.getnames())):
member1 = tar1.getmember(name)
member2 = tar2.getmember(name)
if not member1.isfile() or not member2.isfile():
continue
logger.debug('extract member %s', name)
tar1.extract(name, temp_dir1)
tar2.extract(name, temp_dir2)
in_path1 = os.path.join(temp_dir1, name)
in_path2 = os.path.join(temp_dir2, name)
differences.extend(
debbindiff.comparators.compare_files(in_path1,
in_path2,
source=name))
os.unlink(in_path1)
os.unlink(in_path2)
# look up differences in file list and file metadata
content1 = get_tar_content(tar1).decode('utf-8')
content2 = get_tar_content(tar2).decode('utf-8')
difference = Difference.from_unicode(content1,
content2,
path1,
path2,
source="metadata")
if difference:
differences.append(difference)
return differences
def compare_deb_files(path1, path2, source=None):
differences = []
# look up differences in content
ar1 = ArFile(filename=path1)
ar2 = ArFile(filename=path2)
with make_temp_directory() as temp_dir1:
with make_temp_directory() as temp_dir2:
logger.debug('content1 %s', ar1.getnames())
logger.debug('content2 %s', ar2.getnames())
for name in sorted(
set(ar1.getnames()).intersection(ar2.getnames())):
logger.debug('extract member %s', name)
member1 = ar1.getmember(name)
member2 = ar2.getmember(name)
in_path1 = os.path.join(temp_dir1, name)
in_path2 = os.path.join(temp_dir2, name)
with open(in_path1, 'w') as f1:
f1.write(member1.read())
with open(in_path2, 'w') as f2:
f2.write(member2.read())
differences.extend(
debbindiff.comparators.compare_files(in_path1,
in_path2,
source=name))
os.unlink(in_path1)
os.unlink(in_path2)
# look up differences in file list and file metadata
content1 = get_ar_content(path1)
content2 = get_ar_content(path2)
difference = Difference.from_unicode(content1,
content2,
path1,
path2,
source="metadata")
if difference:
differences.append(difference)
return differences
if dot_changes1[field] != dot_changes2[field]:
content1 = "%s: %s" % (field, dot_changes1[field])
content2 = "%s: %s" % (field, dot_changes2[field])
difference = Difference.from_unicode(
content1, content2,
dot_changes1.get_changes_file(),
dot_changes2.get_changes_file(),
source=source)
if difference:
differences.append(difference)
# This will handle differences in the list of files, checksums, priority
# and section
files1 = dot_changes1.get('Files')
files2 = dot_changes2.get('Files')
logger.debug(dot_changes1.get_as_string('Files'))
files_difference = Difference.from_unicode(
dot_changes1.get_as_string('Files'),
dot_changes2.get_as_string('Files'),
dot_changes1.get_changes_file(),
dot_changes2.get_changes_file(),
source=source,
comment="List of files does not match")
if not files_difference:
return differences
files1 = dict([(d['name'], d) for d in files1])
files2 = dict([(d['name'], d) for d in files2])
files_difference = Difference.from_unicode(
dot_changes1.get_as_string('Files'),
dot_changes2.get_as_string('Files'),
path1, path2,
source='Files')
if not files_difference:
return differences
differences.append(files_difference)
# we are only interested in file names
files1 = dict([(d['name'], d) for d in dot_changes1.get('Files')])
files2 = dict([(d['name'], d) for d in dot_changes2.get('Files')])
for filename in sorted(set(files1.keys()).intersection(files2.keys())):
d1 = files1[filename]
d2 = files2[filename]
if d1['md5sum'] != d2['md5sum']:
logger.debug("%s mentioned in .changes have "
"differences", filename)
differences.append(
debbindiff.comparators.compare_files(
dot_changes1.get_path(filename),
dot_changes2.get_path(filename),
source=get_source(dot_changes1.get_path(filename),
dot_changes2.get_path(filename))))
return differences
