def _sign_fw(fw):
# load the .cab file
download_dir = app.config['DOWNLOAD_DIR']
fn = os.path.join(download_dir, fw.filename)
try:
with open(fn, 'rb') as f:
cabarchive = CabArchive(f.read())
except IOError as e:
raise NotImplementedError('cannot read %s: %s' % (fn, str(e)))
# sign each component in the archive
print('Signing: %s' % fn)
for md in fw.mds:
try:
ploader.archive_sign(cabarchive, cabarchive[md.filename_contents])
except KeyError as _:
raise NotImplementedError('no {} firmware found'.format(md.filename_contents))
# overwrite old file
cab_data = cabarchive.save()
with open(fn, 'wb') as f:
f.write(cab_data)
# inform the plugin loader
ploader.file_modified(fn)
# update the database
fw.checksum_signed = hashlib.sha1(cab_data).hexdigest()
fw.signed_timestamp = datetime.datetime.utcnow()
db.session.commit()
def _sign_fw(fw):
# load the .cab file
download_dir = app.config['DOWNLOAD_DIR']
fn = os.path.join(download_dir, fw.filename)
try:
with open(fn, 'rb') as f:
cabarchive = CabArchive(f.read())
except IOError as e:
raise NotImplementedError('cannot read %s: %s' % (fn, str(e)))
# create Jcat file
jcatfile = JcatFile()
# sign each component in the archive
print('Signing: %s' % fn)
for md in fw.mds:
try:
# create Jcat item with SHA1 and SHA256 checksum blob
cabfile = cabarchive[md.filename_contents]
jcatitem = jcatfile.get_item(md.filename_contents)
jcatitem.add_blob(JcatBlobSha1(cabfile.buf))
jcatitem.add_blob(JcatBlobSha256(cabfile.buf))
# sign using plugins
for blob in ploader.archive_sign(cabfile.buf):
# add GPG only to archive for backwards compat with older fwupd
if blob.kind == JcatBlobKind.GPG:
fn_blob = md.filename_contents + '.' + blob.filename_ext
cabarchive[fn_blob] = CabFile(blob.data)
# add to Jcat file too
jcatitem.add_blob(blob)
except KeyError as _:
raise NotImplementedError('no {} firmware found'.format(
md.filename_contents))
# rewrite the metainfo.xml file to reflect latest changes and sign it
for md in fw.mds:
# write new metainfo.xml file
component = _generate_metadata_mds([md], metainfo=True)
blob_xml = b'<?xml version="1.0" encoding="UTF-8"?>\n' + \
ET.tostring(component,
encoding='UTF-8',
xml_declaration=False,
pretty_print=True)
_show_diff(cabarchive[md.filename_xml].buf, blob_xml)
cabarchive[md.filename_xml].buf = blob_xml
# sign it
jcatitem = jcatfile.get_item(md.filename_xml)
jcatitem.add_blob(JcatBlobSha1(blob_xml))
jcatitem.add_blob(JcatBlobSha256(blob_xml))
for blob in ploader.archive_sign(blob_xml):
jcatitem.add_blob(blob)
# write jcat file
if jcatfile.items:
cabarchive['firmware.jcat'] = CabFile(jcatfile.save())
# overwrite old file
cab_data = cabarchive.save()
with open(fn, 'wb') as f:
f.write(cab_data)
# inform the plugin loader
ploader.file_modified(fn)
# update the download size
for md in fw.mds:
md.release_download_size = len(cab_data)
# update the database
fw.checksum_signed_sha1 = hashlib.sha1(cab_data).hexdigest()
fw.checksum_signed_sha256 = hashlib.sha256(cab_data).hexdigest()
fw.signed_timestamp = datetime.datetime.utcnow()
db.session.commit()