| # Copyright (C) 2010 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| import sha |
| import re |
| |
| import common |
| |
| def FindRadio(zipfile): |
| matches = [] |
| for name in zipfile.namelist(): |
| if re.match(r"^RADIO/radio[.](.+[.])?img$", name): |
| matches.append(name) |
| if len(matches) > 1: |
| raise ValueError("multiple radio images in target-files zip!") |
| if matches: |
| print "using %s as radio.img" % (matches[0],) |
| return zipfile.read(matches[0]) |
| else: |
| return None |
| |
| def FullOTA_InstallEnd(info): |
| try: |
| bootloader_img = info.input_zip.read("RADIO/bootloader.img") |
| except KeyError: |
| print "no bootloader.img in target_files; skipping install" |
| else: |
| common.ZipWriteStr(info.output_zip, "bootloader.img", bootloader_img) |
| info.script.Print("Writing bootloader...") |
| info.script.WriteRawImage("/bootloader", "bootloader.img") |
| |
| radio_img = FindRadio(info.input_zip) |
| if not radio_img: |
| print "no radio.img in target_files; skipping install" |
| else: |
| common.ZipWriteStr(info.output_zip, "radio.img", radio_img) |
| info.script.Print("Writing radio...") |
| info.script.WriteRawImage("/radio", "radio.img") |
| |
| def IncrementalOTA_VerifyEnd(info): |
| target_radio_img = FindRadio(info.target_zip) |
| source_radio_img = FindRadio(info.source_zip) |
| if not target_radio_img or not source_radio_img: return |
| if source_radio_img != target_radio_img: |
| info.script.CacheFreeSpaceCheck(len(source_radio_img)) |
| radio_type, radio_device = common.GetTypeAndDevice("/radio", info.info_dict) |
| info.script.PatchCheck("%s:%s:%d:%s:%d:%s" % ( |
| radio_type, radio_device, |
| len(source_radio_img), sha.sha(source_radio_img).hexdigest(), |
| len(target_radio_img), sha.sha(target_radio_img).hexdigest())) |
| |
| def IncrementalOTA_InstallEnd(info): |
| try: |
| target_bootloader_img = info.target_zip.read("RADIO/bootloader.img") |
| try: |
| source_bootloader_img = info.source_zip.read("RADIO/bootloader.img") |
| except KeyError: |
| source_bootloader_img = None |
| |
| if source_bootloader_img == target_bootloader_img: |
| print "bootloader unchanged; skipping" |
| else: |
| common.ZipWriteStr(info.output_zip, "bootloader.img", target_bootloader_img) |
| info.script.Print("Writing bootloader...") |
| info.script.WriteRawImage("/bootloader", "bootloader.img") |
| |
| except KeyError: |
| print "no bootloader.img in target target_files; skipping install" |
| |
| |
| tf = FindRadio(info.target_zip) |
| if not tf: |
| # failed to read TARGET radio image: don't include any radio in update. |
| print "no radio.img in target target_files; skipping install" |
| else: |
| tf = common.File("radio.img", tf) |
| |
| sf = FindRadio(info.source_zip) |
| if not sf: |
| # failed to read SOURCE radio image: include the whole target |
| # radio image. |
| tf.AddToZip(info.output_zip) |
| info.script.Print("Writing radio...") |
| info.script.WriteRawImage("/radio", tf.name) |
| else: |
| sf = common.File("radio.img", sf) |
| |
| if tf.sha1 == sf.sha1: |
| print "radio image unchanged; skipping" |
| else: |
| diff = common.Difference(tf, sf) |
| common.ComputeDifferences([diff]) |
| _, _, d = diff.GetPatch() |
| if d is None or len(d) > tf.size * common.OPTIONS.patch_threshold: |
| # computing difference failed, or difference is nearly as |
| # big as the target: simply send the target. |
| tf.AddToZip(info.output_zip) |
| info.script.Print("Writing radio...") |
| info.script.WriteRawImage("radio", tf.name) |
| else: |
| common.ZipWriteStr(info.output_zip, "radio.img.p", d) |
| info.script.Print("Patching radio...") |
| radio_type, radio_device = common.GetTypeAndDevice( |
| "/radio", info.info_dict) |
| info.script.ApplyPatch( |
| "%s:%s:%d:%s:%d:%s" % (radio_type, radio_device, |
| sf.size, sf.sha1, tf.size, tf.sha1), |
| "-", tf.size, tf.sha1, sf.sha1, "radio.img.p") |