#!/usr/bin/env python # # Copyright (C) 2008 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. """ Given a target-files zipfile, produces an OTA package that installs that build. An incremental OTA is produced if -i is given, otherwise a full OTA is produced. Usage: ota_from_target_files [flags] input_target_files output_ota_package --board_config Deprecated. -k (--package_key) Key to use to sign the package (default is the value of default_system_dev_certificate from the input target-files's META/misc_info.txt, or "build/target/product/security/testkey" if that value is not specified). For incremental OTAs, the default value is based on the source target-file, not the target build. -i (--incremental_from) Generate an incremental OTA using the given target-files zip as the starting build. -o (--oem_settings) Use the file to specify the expected OEM-specific properties on the OEM partition of the intended device. -w (--wipe_user_data) Generate an OTA package that will wipe the user data partition when installed. -n (--no_prereq) Omit the timestamp prereq check normally included at the top of the build scripts (used for developer OTA packages which legitimately need to go back and forth). -e (--extra_script) Insert the contents of file at the end of the update script. -a (--aslr_mode) Specify whether to turn on ASLR for the package (on by default). -2 (--two_step) Generate a 'two-step' OTA package, where recovery is updated first, so that any changes made to the system partition are done using the new recovery (new kernel, etc.). --block Generate a block-based OTA if possible. Will fall back to a file-based OTA if the target_files is older and doesn't support block-based OTAs. -b (--binary) Use the given binary as the update-binary in the output package, instead of the binary in the build's target_files. Use for development only. -t (--worker_threads) Specifies the number of worker-threads that will be used when generating patches for incremental updates (defaults to 3). """ import sys if sys.hexversion < 0x02070000: print >> sys.stderr, "Python 2.7 or newer is required." sys.exit(1) import copy import errno import os import re import subprocess import tempfile import time import zipfile try: from hashlib import sha1 as sha1 except ImportError: from sha import sha as sha1 import common import edify_generator import build_image OPTIONS = common.OPTIONS OPTIONS.package_key = None OPTIONS.incremental_source = None OPTIONS.require_verbatim = set() OPTIONS.prohibit_verbatim = set(("system/build.prop",)) OPTIONS.patch_threshold = 0.95 OPTIONS.wipe_user_data = False OPTIONS.omit_prereq = False OPTIONS.extra_script = None OPTIONS.aslr_mode = True OPTIONS.worker_threads = 3 OPTIONS.two_step = False OPTIONS.no_signing = False OPTIONS.block_based = False OPTIONS.updater_binary = None OPTIONS.oem_source = None OPTIONS.fallback_to_full = True def MostPopularKey(d, default): """Given a dict, return the key corresponding to the largest value. Returns 'default' if the dict is empty.""" x = [(v, k) for (k, v) in d.iteritems()] if not x: return default x.sort() return x[-1][1] def IsSymlink(info): """Return true if the zipfile.ZipInfo object passed in represents a symlink.""" return (info.external_attr >> 16) == 0120777 def IsRegular(info): """Return true if the zipfile.ZipInfo object passed in represents a symlink.""" return (info.external_attr >> 28) == 010 def ClosestFileMatch(src, tgtfiles, existing): """Returns the closest file match between a source file and list of potential matches. The exact filename match is preferred, then the sha1 is searched for, and finally a file with the same basename is evaluated. Rename support in the updater-binary is required for the latter checks to be used.""" result = tgtfiles.get("path:" + src.name) if result is not None: return result if not OPTIONS.target_info_dict.get("update_rename_support", False): return None if src.size < 1000: return None result = tgtfiles.get("sha1:" + src.sha1) if result is not None and existing.get(result.name) is None: return result result = tgtfiles.get("file:" + src.name.split("/")[-1]) if result is not None and existing.get(result.name) is None: return result return None class ItemSet: def __init__(self, partition, fs_config): self.partition = partition self.fs_config = fs_config self.ITEMS = {} def Get(self, name, dir=False): if name not in self.ITEMS: self.ITEMS[name] = Item(self, name, dir=dir) return self.ITEMS[name] def GetMetadata(self, input_zip): # The target_files contains a record of what the uid, # gid, and mode are supposed to be. output = input_zip.read(self.fs_config) for line in output.split("\n"): if not line: continue columns = line.split() name, uid, gid, mode = columns[:4] selabel = None capabilities = None # After the first 4 columns, there are a series of key=value # pairs. Extract out the fields we care about. for element in columns[4:]: key, value = element.split("=") if key == "selabel": selabel = value if key == "capabilities": capabilities = value i = self.ITEMS.get(name, None) if i is not None: i.uid = int(uid) i.gid = int(gid) i.mode = int(mode, 8) i.selabel = selabel i.capabilities = capabilities if i.dir: i.children.sort(key=lambda i: i.name) # set metadata for the files generated by this script. i = self.ITEMS.get("system/recovery-from-boot.p", None) if i: i.uid, i.gid, i.mode, i.selabel, i.capabilities = 0, 0, 0644, None, None i = self.ITEMS.get("system/etc/install-recovery.sh", None) if i: i.uid, i.gid, i.mode, i.selabel, i.capabilities = 0, 0, 0544, None, None class Item: """Items represent the metadata (user, group, mode) of files and directories in the system image.""" def __init__(self, itemset, name, dir=False): self.itemset = itemset self.name = name self.uid = None self.gid = None self.mode = None self.selabel = None self.capabilities = None self.dir = dir if name: self.parent = itemset.Get(os.path.dirname(name), dir=True) self.parent.children.append(self) else: self.parent = None if dir: self.children = [] def Dump(self, indent=0): if self.uid is not None: print "%s%s %d %d %o" % (" "*indent, self.name, self.uid, self.gid, self.mode) else: print "%s%s %s %s %s" % (" "*indent, self.name, self.uid, self.gid, self.mode) if self.dir: print "%s%s" % (" "*indent, self.descendants) print "%s%s" % (" "*indent, self.best_subtree) for i in self.children: i.Dump(indent=indent+1) def CountChildMetadata(self): """Count up the (uid, gid, mode, selabel, capabilities) tuples for all children and determine the best strategy for using set_perm_recursive and set_perm to correctly chown/chmod all the files to their desired values. Recursively calls itself for all descendants. Returns a dict of {(uid, gid, dmode, fmode, selabel, capabilities): count} counting up all descendants of this node. (dmode or fmode may be None.) Also sets the best_subtree of each directory Item to the (uid, gid, dmode, fmode, selabel, capabilities) tuple that will match the most descendants of that Item. """ assert self.dir d = self.descendants = {(self.uid, self.gid, self.mode, None, self.selabel, self.capabilities): 1} for i in self.children: if i.dir: for k, v in i.CountChildMetadata().iteritems(): d[k] = d.get(k, 0) + v else: k = (i.uid, i.gid, None, i.mode, i.selabel, i.capabilities) d[k] = d.get(k, 0) + 1 # Find the (uid, gid, dmode, fmode, selabel, capabilities) # tuple that matches the most descendants. # First, find the (uid, gid) pair that matches the most # descendants. ug = {} for (uid, gid, _, _, _, _), count in d.iteritems(): ug[(uid, gid)] = ug.get((uid, gid), 0) + count ug = MostPopularKey(ug, (0, 0)) # Now find the dmode, fmode, selabel, and capabilities that match # the most descendants with that (uid, gid), and choose those. best_dmode = (0, 0755) best_fmode = (0, 0644) best_selabel = (0, None) best_capabilities = (0, None) for k, count in d.iteritems(): if k[:2] != ug: continue if k[2] is not None and count >= best_dmode[0]: best_dmode = (count, k[2]) if k[3] is not None and count >= best_fmode[0]: best_fmode = (count, k[3]) if k[4] is not None and count >= best_selabel[0]: best_selabel = (count, k[4]) if k[5] is not None and count >= best_capabilities[0]: best_capabilities = (count, k[5]) self.best_subtree = ug + (best_dmode[1], best_fmode[1], best_selabel[1], best_capabilities[1]) return d def SetPermissions(self, script): """Append set_perm/set_perm_recursive commands to 'script' to set all permissions, users, and groups for the tree of files rooted at 'self'.""" self.CountChildMetadata() def recurse(item, current): # current is the (uid, gid, dmode, fmode, selabel, capabilities) tuple that the current # item (and all its children) have already been set to. We only # need to issue set_perm/set_perm_recursive commands if we're # supposed to be something different. if item.dir: if current != item.best_subtree: script.SetPermissionsRecursive("/"+item.name, *item.best_subtree) current = item.best_subtree if item.uid != current[0] or item.gid != current[1] or \ item.mode != current[2] or item.selabel != current[4] or \ item.capabilities != current[5]: script.SetPermissions("/"+item.name, item.uid, item.gid, item.mode, item.selabel, item.capabilities) for i in item.children: recurse(i, current) else: if item.uid != current[0] or item.gid != current[1] or \ item.mode != current[3] or item.selabel != current[4] or \ item.capabilities != current[5]: script.SetPermissions("/"+item.name, item.uid, item.gid, item.mode, item.selabel, item.capabilities) recurse(self, (-1, -1, -1, -1, None, None)) def CopyPartitionFiles(itemset, input_zip, output_zip=None, substitute=None): """Copies files for the partition in the input zip to the output zip. Populates the Item class with their metadata, and returns a list of symlinks. output_zip may be None, in which case the copy is skipped (but the other side effects still happen). substitute is an optional dict of {output filename: contents} to be output instead of certain input files. """ symlinks = [] partition = itemset.partition for info in input_zip.infolist(): if info.filename.startswith(partition.upper() + "/"): basefilename = info.filename[7:] if IsSymlink(info): symlinks.append((input_zip.read(info.filename), "/" + partition + "/" + basefilename)) else: info2 = copy.copy(info) fn = info2.filename = partition + "/" + basefilename if substitute and fn in substitute and substitute[fn] is None: continue if output_zip is not None: if substitute and fn in substitute: data = substitute[fn] else: data = input_zip.read(info.filename) output_zip.writestr(info2, data) if fn.endswith("/"): itemset.Get(fn[:-1], dir=True) else: itemset.Get(fn, dir=False) symlinks.sort() return symlinks def SignOutput(temp_zip_name, output_zip_name): key_passwords = common.GetKeyPasswords([OPTIONS.package_key]) pw = key_passwords[OPTIONS.package_key] common.SignFile(temp_zip_name, output_zip_name, OPTIONS.package_key, pw, whole_file=True) def AppendAssertions(script, info_dict, oem_dict = None): oem_props = info_dict.get("oem_fingerprint_properties") if oem_props is None: device = GetBuildProp("ro.product.device", info_dict) script.AssertDevice(device) else: if oem_dict is None: raise common.ExternalError("No OEM file provided to answer expected assertions") for prop in oem_props.split(): if oem_dict.get(prop) is None: raise common.ExternalError("The OEM file is missing the property %s" % prop) script.AssertOemProperty(prop, oem_dict.get(prop)) def HasRecoveryPatch(target_files_zip): try: target_files_zip.getinfo("SYSTEM/recovery-from-boot.p") return True except KeyError: return False def HasVendorPartition(target_files_zip): try: target_files_zip.getinfo("VENDOR/") return True except KeyError: return False def GetOemProperty(name, oem_props, oem_dict, info_dict): if oem_props is not None and name in oem_props: return oem_dict[name] return GetBuildProp(name, info_dict) def CalculateFingerprint(oem_props, oem_dict, info_dict): if oem_props is None: return GetBuildProp("ro.build.fingerprint", info_dict) return "%s/%s/%s:%s" % ( GetOemProperty("ro.product.brand", oem_props, oem_dict, info_dict), GetOemProperty("ro.product.name", oem_props, oem_dict, info_dict), GetOemProperty("ro.product.device", oem_props, oem_dict, info_dict), GetBuildProp("ro.build.thumbprint", info_dict)) def GetImage(which, tmpdir, info_dict): # Return (mapdata, data) for the given image. which should be # "system" or "vendor". assert which in ("system", "vendor") path = os.path.join(tmpdir, "IMAGES", which + ".img") if os.path.exists(path): print "using %s.img from target-files" % (which,) # This is a 'new' target-files, which already has the image in it. # The image is a sparse image, though, so we need to unsparse it # and extract the map data. success, name = build_image.UnsparseImage(path, replace=False) if not success: assert False, "unsparsing " + which + ".img failed" mmap = tempfile.NamedTemporaryFile() mimg = tempfile.NamedTemporaryFile(delete=False) success = build_image.MappedUnsparseImage( path, name, mmap.name, mimg.name) if not success: assert False, "creating sparse map failed" os.unlink(name) name = mimg.name with open(mmap.name) as f: mapdata = f.read() try: with open(name) as f: data = f.read() finally: os.unlink(name) print "unsparsed data sha1 is " + sha1(data).hexdigest() return mapdata, data else: print "building %s.img from target-files" % (which,) # This is an 'old' target-files, which does not contain images # already built. Build them. import add_img_to_target_files if which == "system": mapdata, data = add_img_to_target_files.BuildSystem( tmpdir, info_dict, sparse=False, map_file=True) elif which == "vendor": mapdata, data = add_img_to_target_files.BuildVendor( tmpdir, info_dict, sparse=False, map_file=True) print "built data sha1 is " + sha1(data).hexdigest() return mapdata, data def WriteFullOTAPackage(input_zip, output_zip): # TODO: how to determine this? We don't know what version it will # be installed on top of. For now, we expect the API just won't # change very often. script = edify_generator.EdifyGenerator(3, OPTIONS.info_dict) oem_props = OPTIONS.info_dict.get("oem_fingerprint_properties") oem_dict = None if oem_props is not None: if OPTIONS.oem_source is None: raise common.ExternalError("OEM source required for this build") script.Mount("/oem") oem_dict = common.LoadDictionaryFromLines(open(OPTIONS.oem_source).readlines()) metadata = {"post-build": CalculateFingerprint( oem_props, oem_dict, OPTIONS.info_dict), "pre-device": GetOemProperty("ro.product.device", oem_props, oem_dict, OPTIONS.info_dict), "post-timestamp": GetBuildProp("ro.build.date.utc", OPTIONS.info_dict), } device_specific = common.DeviceSpecificParams( input_zip=input_zip, input_version=OPTIONS.info_dict["recovery_api_version"], output_zip=output_zip, script=script, input_tmp=OPTIONS.input_tmp, metadata=metadata, info_dict=OPTIONS.info_dict) has_recovery_patch = HasRecoveryPatch(input_zip) block_based = OPTIONS.block_based and has_recovery_patch if not OPTIONS.omit_prereq: ts = GetBuildProp("ro.build.date.utc", OPTIONS.info_dict) ts_text = GetBuildProp("ro.build.date", OPTIONS.info_dict) script.AssertOlderBuild(ts, ts_text) AppendAssertions(script, OPTIONS.info_dict, oem_dict) device_specific.FullOTA_Assertions() # Two-step package strategy (in chronological order, which is *not* # the order in which the generated script has things): # # if stage is not "2/3" or "3/3": # write recovery image to boot partition # set stage to "2/3" # reboot to boot partition and restart recovery # else if stage is "2/3": # write recovery image to recovery partition # set stage to "3/3" # reboot to recovery partition and restart recovery # else: # (stage must be "3/3") # set stage to "" # do normal full package installation: # wipe and install system, boot image, etc. # set up system to update recovery partition on first boot # complete script normally (allow recovery to mark itself finished and reboot) recovery_img = common.GetBootableImage("recovery.img", "recovery.img", OPTIONS.input_tmp, "RECOVERY") if OPTIONS.two_step: if not OPTIONS.info_dict.get("multistage_support", None): assert False, "two-step packages not supported by this build" fs = OPTIONS.info_dict["fstab"]["/misc"] assert fs.fs_type.upper() == "EMMC", \ "two-step packages only supported on devices with EMMC /misc partitions" bcb_dev = {"bcb_dev": fs.device} common.ZipWriteStr(output_zip, "recovery.img", recovery_img.data) script.AppendExtra(""" if get_stage("%(bcb_dev)s", "stage") == "2/3" then """ % bcb_dev) script.WriteRawImage("/recovery", "recovery.img") script.AppendExtra(""" set_stage("%(bcb_dev)s", "3/3"); reboot_now("%(bcb_dev)s", "recovery"); else if get_stage("%(bcb_dev)s", "stage") == "3/3" then """ % bcb_dev) device_specific.FullOTA_InstallBegin() system_progress = 0.75 if OPTIONS.wipe_user_data: system_progress -= 0.1 if HasVendorPartition(input_zip): system_progress -= 0.1 if "selinux_fc" in OPTIONS.info_dict: WritePolicyConfig(OPTIONS.info_dict["selinux_fc"], output_zip) system_items = ItemSet("system", "META/filesystem_config.txt") script.ShowProgress(system_progress, 0) if block_based: mapdata, data = GetImage("system", OPTIONS.input_tmp, OPTIONS.info_dict) common.ZipWriteStr(output_zip, "system.map", mapdata) common.ZipWriteStr(output_zip, "system.muimg", data) script.WipeBlockDevice("/system") script.WriteRawImage("/system", "system.muimg", mapfn="system.map") else: script.FormatPartition("/system") script.Mount("/system") if not has_recovery_patch: script.UnpackPackageDir("recovery", "/system") script.UnpackPackageDir("system", "/system") symlinks = CopyPartitionFiles(system_items, input_zip, output_zip) script.MakeSymlinks(symlinks) boot_img = common.GetBootableImage("boot.img", "boot.img", OPTIONS.input_tmp, "BOOT") if not block_based: def output_sink(fn, data): common.ZipWriteStr(output_zip, "recovery/" + fn, data) system_items.Get("system/" + fn, dir=False) common.MakeRecoveryPatch(OPTIONS.input_tmp, output_sink, recovery_img, boot_img) system_items.GetMetadata(input_zip) system_items.Get("system").SetPermissions(script) if HasVendorPartition(input_zip): vendor_items = ItemSet("vendor", "META/vendor_filesystem_config.txt") script.ShowProgress(0.1, 0) if block_based: mapdata, data = GetImage("vendor", OPTIONS.input_tmp, OPTIONS.info_dict) common.ZipWriteStr(output_zip, "vendor.map", mapdata) common.ZipWriteStr(output_zip, "vendor.muimg", data) script.WipeBlockDevice("/vendor") script.WriteRawImage("/vendor", "vendor.muimg", mapfn="vendor.map") else: script.FormatPartition("/vendor") script.Mount("/vendor") script.UnpackPackageDir("vendor", "/vendor") symlinks = CopyPartitionFiles(vendor_items, input_zip, output_zip) script.MakeSymlinks(symlinks) vendor_items.GetMetadata(input_zip) vendor_items.Get("vendor").SetPermissions(script) common.CheckSize(boot_img.data, "boot.img", OPTIONS.info_dict) common.ZipWriteStr(output_zip, "boot.img", boot_img.data) script.ShowProgress(0.05, 5) script.WriteRawImage("/boot", "boot.img") script.ShowProgress(0.2, 10) device_specific.FullOTA_InstallEnd() if OPTIONS.extra_script is not None: script.AppendExtra(OPTIONS.extra_script) script.UnmountAll() if OPTIONS.wipe_user_data: script.ShowProgress(0.1, 10) script.FormatPartition("/data") if OPTIONS.two_step: script.AppendExtra(""" set_stage("%(bcb_dev)s", ""); """ % bcb_dev) script.AppendExtra("else\n") script.WriteRawImage("/boot", "recovery.img") script.AppendExtra(""" set_stage("%(bcb_dev)s", "2/3"); reboot_now("%(bcb_dev)s", ""); endif; endif; """ % bcb_dev) script.AddToZip(input_zip, output_zip, input_path=OPTIONS.updater_binary) WriteMetadata(metadata, output_zip) def WritePolicyConfig(file_context, output_zip): f = open(file_context, 'r'); basename = os.path.basename(file_context) common.ZipWriteStr(output_zip, basename, f.read()) def WriteMetadata(metadata, output_zip): common.ZipWriteStr(output_zip, "META-INF/com/android/metadata", "".join(["%s=%s\n" % kv for kv in sorted(metadata.iteritems())])) def LoadPartitionFiles(z, partition): """Load all the files from the given partition in a given target-files ZipFile, and return a dict of {filename: File object}.""" out = {} prefix = partition.upper() + "/" for info in z.infolist(): if info.filename.startswith(prefix) and not IsSymlink(info): basefilename = info.filename[7:] fn = partition + "/" + basefilename data = z.read(info.filename) out[fn] = common.File(fn, data) return out def GetBuildProp(prop, info_dict): """Return the fingerprint of the build of a given target-files info_dict.""" try: return info_dict.get("build.prop", {})[prop] except KeyError: raise common.ExternalError("couldn't find %s in build.prop" % (prop,)) def AddToKnownPaths(filename, known_paths): if filename[-1] == "/": return dirs = filename.split("/")[:-1] while len(dirs) > 0: path = "/".join(dirs) if path in known_paths: break; known_paths.add(path) dirs.pop() class BlockDifference: def __init__(self, partition, output_zip): with tempfile.NamedTemporaryFile() as src_file: with tempfile.NamedTemporaryFile() as tgt_file: print "building source " + partition + " image..." src_file = tempfile.NamedTemporaryFile() src_mapdata, src_data = GetImage(partition, OPTIONS.source_tmp, OPTIONS.source_info_dict) self.src_sha1 = sha1(src_data).hexdigest() print "source " + partition + " sha1:", self.src_sha1 src_file.write(src_data) print "building target " + partition + " image..." tgt_file = tempfile.NamedTemporaryFile() tgt_mapdata, tgt_data = GetImage(partition, OPTIONS.target_tmp, OPTIONS.target_info_dict) self.tgt_sha1 = sha1(tgt_data).hexdigest() print "target " + partition + " sha1:", self.tgt_sha1 tgt_len = len(tgt_data) tgt_file.write(tgt_data) system_type, self.device = common.GetTypeAndDevice("/" + partition, OPTIONS.info_dict) self.patch = common.MakePartitionPatch(src_file, tgt_file, partition) TestBlockPatch(src_data, src_mapdata, self.patch.data, tgt_mapdata, self.tgt_sha1) src_data = None tgt_data = None self.patch.AddToZip(output_zip, compression=zipfile.ZIP_STORED) self.src_mapfilename = self.patch.name + ".src.map" common.ZipWriteStr(output_zip, self.src_mapfilename, src_mapdata) self.tgt_mapfilename = self.patch.name + ".tgt.map" common.ZipWriteStr(output_zip, self.tgt_mapfilename, tgt_mapdata) def WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_zip): source_version = OPTIONS.source_info_dict["recovery_api_version"] target_version = OPTIONS.target_info_dict["recovery_api_version"] if source_version == 0: print ("WARNING: generating edify script for a source that " "can't install it.") script = edify_generator.EdifyGenerator(source_version, OPTIONS.target_info_dict) metadata = {"pre-device": GetBuildProp("ro.product.device", OPTIONS.source_info_dict), "post-timestamp": GetBuildProp("ro.build.date.utc", OPTIONS.target_info_dict), } device_specific = common.DeviceSpecificParams( source_zip=source_zip, source_version=source_version, target_zip=target_zip, target_version=target_version, output_zip=output_zip, script=script, metadata=metadata, info_dict=OPTIONS.info_dict) source_fp = GetBuildProp("ro.build.fingerprint", OPTIONS.source_info_dict) target_fp = GetBuildProp("ro.build.fingerprint", OPTIONS.target_info_dict) metadata["pre-build"] = source_fp metadata["post-build"] = target_fp source_boot = common.GetBootableImage( "/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT", OPTIONS.source_info_dict) target_boot = common.GetBootableImage( "/tmp/boot.img", "boot.img", OPTIONS.target_tmp, "BOOT") updating_boot = (not OPTIONS.two_step and (source_boot.data != target_boot.data)) source_recovery = common.GetBootableImage( "/tmp/recovery.img", "recovery.img", OPTIONS.source_tmp, "RECOVERY", OPTIONS.source_info_dict) target_recovery = common.GetBootableImage( "/tmp/recovery.img", "recovery.img", OPTIONS.target_tmp, "RECOVERY") updating_recovery = (source_recovery.data != target_recovery.data) system_diff = BlockDifference("system", output_zip) if HasVendorPartition(target_zip): if not HasVendorPartition(source_zip): raise RuntimeError("can't generate incremental that adds /vendor") vendor_diff = BlockDifference("vendor", output_zip) oem_props = OPTIONS.target_info_dict.get("oem_fingerprint_properties") oem_dict = None if oem_props is not None: if OPTIONS.oem_source is None: raise common.ExternalError("OEM source required for this build") script.Mount("/oem") oem_dict = common.LoadDictionaryFromLines(open(OPTIONS.oem_source).readlines()) AppendAssertions(script, OPTIONS.target_info_dict, oem_dict) device_specific.IncrementalOTA_Assertions() # Two-step incremental package strategy (in chronological order, # which is *not* the order in which the generated script has # things): # # if stage is not "2/3" or "3/3": # do verification on current system # write recovery image to boot partition # set stage to "2/3" # reboot to boot partition and restart recovery # else if stage is "2/3": # write recovery image to recovery partition # set stage to "3/3" # reboot to recovery partition and restart recovery # else: # (stage must be "3/3") # perform update: # patch system files, etc. # force full install of new boot image # set up system to update recovery partition on first boot # complete script normally (allow recovery to mark itself finished and reboot) if OPTIONS.two_step: if not OPTIONS.info_dict.get("multistage_support", None): assert False, "two-step packages not supported by this build" fs = OPTIONS.info_dict["fstab"]["/misc"] assert fs.fs_type.upper() == "EMMC", \ "two-step packages only supported on devices with EMMC /misc partitions" bcb_dev = {"bcb_dev": fs.device} common.ZipWriteStr(output_zip, "recovery.img", target_recovery.data) script.AppendExtra(""" if get_stage("%(bcb_dev)s", "stage") == "2/3" then """ % bcb_dev) script.AppendExtra("sleep(20);\n"); script.WriteRawImage("/recovery", "recovery.img") script.AppendExtra(""" set_stage("%(bcb_dev)s", "3/3"); reboot_now("%(bcb_dev)s", "recovery"); else if get_stage("%(bcb_dev)s", "stage") != "3/3" then """ % bcb_dev) script.Print("Verifying current system...") device_specific.IncrementalOTA_VerifyBegin() if oem_props is None: script.AssertSomeFingerprint(source_fp, target_fp) else: script.AssertSomeThumbprint( GetBuildProp("ro.build.thumbprint", OPTIONS.target_info_dict), GetBuildProp("ro.build.thumbprint", OPTIONS.source_info_dict)) if updating_boot: d = common.Difference(target_boot, source_boot) _, _, d = d.ComputePatch() print "boot target: %d source: %d diff: %d" % ( target_boot.size, source_boot.size, len(d)) common.ZipWriteStr(output_zip, "patch/boot.img.p", d) boot_type, boot_device = common.GetTypeAndDevice("/boot", OPTIONS.info_dict) script.PatchCheck("%s:%s:%d:%s:%d:%s" % (boot_type, boot_device, source_boot.size, source_boot.sha1, target_boot.size, target_boot.sha1)) device_specific.IncrementalOTA_VerifyEnd() if OPTIONS.two_step: script.WriteRawImage("/boot", "recovery.img") script.AppendExtra(""" set_stage("%(bcb_dev)s", "2/3"); reboot_now("%(bcb_dev)s", ""); else """ % bcb_dev) script.Comment("---- start making changes here ----") device_specific.IncrementalOTA_InstallBegin() if HasVendorPartition(target_zip): script.Print("Patching vendor image...") script.ShowProgress(0.1, 0) script.Syspatch(vendor_diff.device, vendor_diff.tgt_mapfilename, vendor_diff.tgt_sha1, vendor_diff.src_mapfilename, vendor_diff.src_sha1, vendor_diff.patch.name) sys_progress = 0.8 else: sys_progress = 0.9 script.Print("Patching system image...") script.ShowProgress(sys_progress, 0) script.Syspatch(system_diff.device, system_diff.tgt_mapfilename, system_diff.tgt_sha1, system_diff.src_mapfilename, system_diff.src_sha1, system_diff.patch.name) if OPTIONS.two_step: common.ZipWriteStr(output_zip, "boot.img", target_boot.data) script.WriteRawImage("/boot", "boot.img") print "writing full boot image (forced by two-step mode)" if not OPTIONS.two_step: if updating_boot: # Produce the boot image by applying a patch to the current # contents of the boot partition, and write it back to the # partition. script.Print("Patching boot image...") script.ShowProgress(0.1, 10) script.ApplyPatch("%s:%s:%d:%s:%d:%s" % (boot_type, boot_device, source_boot.size, source_boot.sha1, target_boot.size, target_boot.sha1), "-", target_boot.size, target_boot.sha1, source_boot.sha1, "patch/boot.img.p") print "boot image changed; including." else: print "boot image unchanged; skipping." # Do device-specific installation (eg, write radio image). device_specific.IncrementalOTA_InstallEnd() if OPTIONS.extra_script is not None: script.AppendExtra(OPTIONS.extra_script) if OPTIONS.wipe_user_data: script.Print("Erasing user data...") script.FormatPartition("/data") if OPTIONS.two_step: script.AppendExtra(""" set_stage("%(bcb_dev)s", ""); endif; endif; """ % bcb_dev) script.SetProgress(1) script.AddToZip(target_zip, output_zip, input_path=OPTIONS.updater_binary) WriteMetadata(metadata, output_zip) def ParseMap(map_str): x = map_str.split() assert int(x[0]) == 4096 assert int(x[1]) == len(x)-2 return int(x[0]), [int(i) for i in x[2:]] def TestBlockPatch(src_muimg, src_map, patch_data, tgt_map, tgt_sha1): src_blksize, src_regions = ParseMap(src_map) tgt_blksize, tgt_regions = ParseMap(tgt_map) with tempfile.NamedTemporaryFile() as src_file,\ tempfile.NamedTemporaryFile() as patch_file,\ tempfile.NamedTemporaryFile() as src_map_file,\ tempfile.NamedTemporaryFile() as tgt_map_file: src_total = sum(src_regions) * src_blksize src_file.truncate(src_total) p = 0 for i in range(0, len(src_regions), 2): c, dc = src_regions[i:i+2] src_file.write(src_muimg[p:(p+c*src_blksize)]) p += c*src_blksize src_file.seek(dc*src_blksize, 1) assert src_file.tell() == src_total patch_file.write(patch_data) src_map_file.write(src_map) tgt_map_file.write(tgt_map) src_file.flush() src_map_file.flush() patch_file.flush() tgt_map_file.flush() p = common.Run(["syspatch_host", src_file.name, src_map_file.name, patch_file.name, src_file.name, tgt_map_file.name], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) stdoutdata, _ = p.communicate() if p.returncode != 0: print stdoutdata raise ValueError("failed to reconstruct target system image from patch") h = sha1() src_file.seek(0, 0) for i in range(0, len(tgt_regions), 2): c, dc = tgt_regions[i:i+2] h.update(src_file.read(c*tgt_blksize)) src_file.seek(dc*tgt_blksize, 1) if h.hexdigest() != tgt_sha1: raise ValueError("patch reconstructed incorrect target system image") print "test of system image patch succeeded" class FileDifference: def __init__(self, partition, source_zip, target_zip, output_zip): print "Loading target..." self.target_data = target_data = LoadPartitionFiles(target_zip, partition) print "Loading source..." self.source_data = source_data = LoadPartitionFiles(source_zip, partition) self.verbatim_targets = verbatim_targets = [] self.patch_list = patch_list = [] diffs = [] self.renames = renames = {} known_paths = set() largest_source_size = 0 matching_file_cache = {} for fn, sf in source_data.items(): assert fn == sf.name matching_file_cache["path:" + fn] = sf if fn in target_data.keys(): AddToKnownPaths(fn, known_paths) # Only allow eligibility for filename/sha matching # if there isn't a perfect path match. if target_data.get(sf.name) is None: matching_file_cache["file:" + fn.split("/")[-1]] = sf matching_file_cache["sha:" + sf.sha1] = sf for fn in sorted(target_data.keys()): tf = target_data[fn] assert fn == tf.name sf = ClosestFileMatch(tf, matching_file_cache, renames) if sf is not None and sf.name != tf.name: print "File has moved from " + sf.name + " to " + tf.name renames[sf.name] = tf if sf is None or fn in OPTIONS.require_verbatim: # This file should be included verbatim if fn in OPTIONS.prohibit_verbatim: raise common.ExternalError("\"%s\" must be sent verbatim" % (fn,)) print "send", fn, "verbatim" tf.AddToZip(output_zip) verbatim_targets.append((fn, tf.size)) if fn in target_data.keys(): AddToKnownPaths(fn, known_paths) elif tf.sha1 != sf.sha1: # File is different; consider sending as a patch diffs.append(common.Difference(tf, sf)) else: # Target file data identical to source (may still be renamed) pass common.ComputeDifferences(diffs) for diff in diffs: tf, sf, d = diff.GetPatch() path = "/".join(tf.name.split("/")[:-1]) if d is None or len(d) > tf.size * OPTIONS.patch_threshold or \ path not in known_paths: # patch is almost as big as the file; don't bother patching # or a patch + rename cannot take place due to the target # directory not existing tf.AddToZip(output_zip) verbatim_targets.append((tf.name, tf.size)) if sf.name in renames: del renames[sf.name] AddToKnownPaths(tf.name, known_paths) else: common.ZipWriteStr(output_zip, "patch/" + sf.name + ".p", d) patch_list.append((tf, sf, tf.size, common.sha1(d).hexdigest())) largest_source_size = max(largest_source_size, sf.size) self.largest_source_size = largest_source_size def EmitVerification(self, script): so_far = 0 for tf, sf, size, patch_sha in self.patch_list: if tf.name != sf.name: script.SkipNextActionIfTargetExists(tf.name, tf.sha1) script.PatchCheck("/"+sf.name, tf.sha1, sf.sha1) so_far += sf.size return so_far def RemoveUnneededFiles(self, script, extras=()): script.DeleteFiles(["/"+i[0] for i in self.verbatim_targets] + ["/"+i for i in sorted(self.source_data) if i not in self.target_data and i not in self.renames] + list(extras)) def TotalPatchSize(self): return sum(i[1].size for i in self.patch_list) def EmitPatches(self, script, total_patch_size, so_far): self.deferred_patch_list = deferred_patch_list = [] for item in self.patch_list: tf, sf, size, _ = item if tf.name == "system/build.prop": deferred_patch_list.append(item) continue if (sf.name != tf.name): script.SkipNextActionIfTargetExists(tf.name, tf.sha1) script.ApplyPatch("/"+sf.name, "-", tf.size, tf.sha1, sf.sha1, "patch/"+sf.name+".p") so_far += tf.size script.SetProgress(so_far / total_patch_size) return so_far def EmitDeferredPatches(self, script): for item in self.deferred_patch_list: tf, sf, size, _ = item script.ApplyPatch("/"+sf.name, "-", tf.size, tf.sha1, sf.sha1, "patch/"+sf.name+".p") script.SetPermissions("/system/build.prop", 0, 0, 0644, None, None) def EmitRenames(self, script): if len(self.renames) > 0: script.Print("Renaming files...") for src, tgt in self.renames.iteritems(): print "Renaming " + src + " to " + tgt.name script.RenameFile(src, tgt.name) def WriteIncrementalOTAPackage(target_zip, source_zip, output_zip): target_has_recovery_patch = HasRecoveryPatch(target_zip) source_has_recovery_patch = HasRecoveryPatch(source_zip) if (OPTIONS.block_based and target_has_recovery_patch and source_has_recovery_patch): return WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_zip) source_version = OPTIONS.source_info_dict["recovery_api_version"] target_version = OPTIONS.target_info_dict["recovery_api_version"] if source_version == 0: print ("WARNING: generating edify script for a source that " "can't install it.") script = edify_generator.EdifyGenerator(source_version, OPTIONS.target_info_dict) oem_props = OPTIONS.info_dict.get("oem_fingerprint_properties") oem_dict = None if oem_props is not None: if OPTIONS.oem_source is None: raise common.ExternalError("OEM source required for this build") script.Mount("/oem") oem_dict = common.LoadDictionaryFromLines(open(OPTIONS.oem_source).readlines()) metadata = {"pre-device": GetOemProperty("ro.product.device", oem_props, oem_dict, OPTIONS.source_info_dict), "post-timestamp": GetBuildProp("ro.build.date.utc", OPTIONS.target_info_dict), } device_specific = common.DeviceSpecificParams( source_zip=source_zip, source_version=source_version, target_zip=target_zip, target_version=target_version, output_zip=output_zip, script=script, metadata=metadata, info_dict=OPTIONS.info_dict) system_diff = FileDifference("system", source_zip, target_zip, output_zip) script.Mount("/system") if HasVendorPartition(target_zip): vendor_diff = FileDifference("vendor", source_zip, target_zip, output_zip) script.Mount("/vendor") else: vendor_diff = None target_fp = CalculateFingerprint(oem_props, oem_dict, OPTIONS.target_info_dict) source_fp = CalculateFingerprint(oem_props, oem_dict, OPTIONS.source_info_dict) if oem_props is None: script.AssertSomeFingerprint(source_fp, target_fp) else: script.AssertSomeThumbprint( GetBuildProp("ro.build.thumbprint", OPTIONS.target_info_dict), GetBuildProp("ro.build.thumbprint", OPTIONS.source_info_dict)) metadata["pre-build"] = source_fp metadata["post-build"] = target_fp source_boot = common.GetBootableImage( "/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT", OPTIONS.source_info_dict) target_boot = common.GetBootableImage( "/tmp/boot.img", "boot.img", OPTIONS.target_tmp, "BOOT") updating_boot = (not OPTIONS.two_step and (source_boot.data != target_boot.data)) source_recovery = common.GetBootableImage( "/tmp/recovery.img", "recovery.img", OPTIONS.source_tmp, "RECOVERY", OPTIONS.source_info_dict) target_recovery = common.GetBootableImage( "/tmp/recovery.img", "recovery.img", OPTIONS.target_tmp, "RECOVERY") updating_recovery = (source_recovery.data != target_recovery.data) # Here's how we divide up the progress bar: # 0.1 for verifying the start state (PatchCheck calls) # 0.8 for applying patches (ApplyPatch calls) # 0.1 for unpacking verbatim files, symlinking, and doing the # device-specific commands. AppendAssertions(script, OPTIONS.target_info_dict, oem_dict) device_specific.IncrementalOTA_Assertions() # Two-step incremental package strategy (in chronological order, # which is *not* the order in which the generated script has # things): # # if stage is not "2/3" or "3/3": # do verification on current system # write recovery image to boot partition # set stage to "2/3" # reboot to boot partition and restart recovery # else if stage is "2/3": # write recovery image to recovery partition # set stage to "3/3" # reboot to recovery partition and restart recovery # else: # (stage must be "3/3") # perform update: # patch system files, etc. # force full install of new boot image # set up system to update recovery partition on first boot # complete script normally (allow recovery to mark itself finished and reboot) if OPTIONS.two_step: if not OPTIONS.info_dict.get("multistage_support", None): assert False, "two-step packages not supported by this build" fs = OPTIONS.info_dict["fstab"]["/misc"] assert fs.fs_type.upper() == "EMMC", \ "two-step packages only supported on devices with EMMC /misc partitions" bcb_dev = {"bcb_dev": fs.device} common.ZipWriteStr(output_zip, "recovery.img", target_recovery.data) script.AppendExtra(""" if get_stage("%(bcb_dev)s", "stage") == "2/3" then """ % bcb_dev) script.AppendExtra("sleep(20);\n"); script.WriteRawImage("/recovery", "recovery.img") script.AppendExtra(""" set_stage("%(bcb_dev)s", "3/3"); reboot_now("%(bcb_dev)s", "recovery"); else if get_stage("%(bcb_dev)s", "stage") != "3/3" then """ % bcb_dev) script.Print("Verifying current system...") device_specific.IncrementalOTA_VerifyBegin() script.ShowProgress(0.1, 0) so_far = system_diff.EmitVerification(script) if vendor_diff: so_far += vendor_diff.EmitVerification(script) if updating_boot: d = common.Difference(target_boot, source_boot) _, _, d = d.ComputePatch() print "boot target: %d source: %d diff: %d" % ( target_boot.size, source_boot.size, len(d)) common.ZipWriteStr(output_zip, "patch/boot.img.p", d) boot_type, boot_device = common.GetTypeAndDevice("/boot", OPTIONS.info_dict) script.PatchCheck("%s:%s:%d:%s:%d:%s" % (boot_type, boot_device, source_boot.size, source_boot.sha1, target_boot.size, target_boot.sha1)) so_far += source_boot.size size = [] if system_diff.patch_list: size.append(system_diff.largest_source_size) if vendor_diff: if vendor_diff.patch_list: size.append(vendor_diff.largest_source_size) if size or updating_recovery or updating_boot: script.CacheFreeSpaceCheck(max(size)) device_specific.IncrementalOTA_VerifyEnd() if OPTIONS.two_step: script.WriteRawImage("/boot", "recovery.img") script.AppendExtra(""" set_stage("%(bcb_dev)s", "2/3"); reboot_now("%(bcb_dev)s", ""); else """ % bcb_dev) script.Comment("---- start making changes here ----") device_specific.IncrementalOTA_InstallBegin() if OPTIONS.two_step: common.ZipWriteStr(output_zip, "boot.img", target_boot.data) script.WriteRawImage("/boot", "boot.img") print "writing full boot image (forced by two-step mode)" script.Print("Removing unneeded files...") system_diff.RemoveUnneededFiles(script, ("/system/recovery.img",)) if vendor_diff: vendor_diff.RemoveUnneededFiles(script) script.ShowProgress(0.8, 0) total_patch_size = 1.0 + system_diff.TotalPatchSize() if vendor_diff: total_patch_size += vendor_diff.TotalPatchSize() if updating_boot: total_patch_size += target_boot.size script.Print("Patching system files...") so_far = system_diff.EmitPatches(script, total_patch_size, 0) if vendor_diff: script.Print("Patching vendor files...") so_far = vendor_diff.EmitPatches(script, total_patch_size, so_far) if not OPTIONS.two_step: if updating_boot: # Produce the boot image by applying a patch to the current # contents of the boot partition, and write it back to the # partition. script.Print("Patching boot image...") script.ApplyPatch("%s:%s:%d:%s:%d:%s" % (boot_type, boot_device, source_boot.size, source_boot.sha1, target_boot.size, target_boot.sha1), "-", target_boot.size, target_boot.sha1, source_boot.sha1, "patch/boot.img.p") so_far += target_boot.size script.SetProgress(so_far / total_patch_size) print "boot image changed; including." else: print "boot image unchanged; skipping." system_items = ItemSet("system", "META/filesystem_config.txt") if vendor_diff: vendor_items = ItemSet("vendor", "META/vendor_filesystem_config.txt") if updating_recovery: # Recovery is generated as a patch using both the boot image # (which contains the same linux kernel as recovery) and the file # /system/etc/recovery-resource.dat (which contains all the images # used in the recovery UI) as sources. This lets us minimize the # size of the patch, which must be included in every OTA package. # # For older builds where recovery-resource.dat is not present, we # use only the boot image as the source. if not target_has_recovery_patch: def output_sink(fn, data): common.ZipWriteStr(output_zip, "recovery/" + fn, data) system_items.Get("system/" + fn, dir=False) common.MakeRecoveryPatch(OPTIONS.target_tmp, output_sink, target_recovery, target_boot) script.DeleteFiles(["/system/recovery-from-boot.p", "/system/etc/install-recovery.sh"]) print "recovery image changed; including as patch from boot." else: print "recovery image unchanged; skipping." script.ShowProgress(0.1, 10) target_symlinks = CopyPartitionFiles(system_items, target_zip, None) if vendor_diff: target_symlinks.extend(CopyPartitionFiles(vendor_items, target_zip, None)) temp_script = script.MakeTemporary() system_items.GetMetadata(target_zip) system_items.Get("system").SetPermissions(temp_script) if vendor_diff: vendor_items.GetMetadata(target_zip) vendor_items.Get("vendor").SetPermissions(temp_script) # Note that this call will mess up the trees of Items, so make sure # we're done with them. source_symlinks = CopyPartitionFiles(system_items, source_zip, None) if vendor_diff: source_symlinks.extend(CopyPartitionFiles(vendor_items, source_zip, None)) target_symlinks_d = dict([(i[1], i[0]) for i in target_symlinks]) source_symlinks_d = dict([(i[1], i[0]) for i in source_symlinks]) # Delete all the symlinks in source that aren't in target. This # needs to happen before verbatim files are unpacked, in case a # symlink in the source is replaced by a real file in the target. to_delete = [] for dest, link in source_symlinks: if link not in target_symlinks_d: to_delete.append(link) script.DeleteFiles(to_delete) if system_diff.verbatim_targets: script.Print("Unpacking new system files...") script.UnpackPackageDir("system", "/system") if vendor_diff and vendor_diff.verbatim_targets: script.Print("Unpacking new vendor files...") script.UnpackPackageDir("vendor", "/vendor") if updating_recovery and not target_has_recovery_patch: script.Print("Unpacking new recovery...") script.UnpackPackageDir("recovery", "/system") system_diff.EmitRenames(script) if vendor_diff: vendor_diff.EmitRenames(script) script.Print("Symlinks and permissions...") # Create all the symlinks that don't already exist, or point to # somewhere different than what we want. Delete each symlink before # creating it, since the 'symlink' command won't overwrite. to_create = [] for dest, link in target_symlinks: if link in source_symlinks_d: if dest != source_symlinks_d[link]: to_create.append((dest, link)) else: to_create.append((dest, link)) script.DeleteFiles([i[1] for i in to_create]) script.MakeSymlinks(to_create) # Now that the symlinks are created, we can set all the # permissions. script.AppendScript(temp_script) # Do device-specific installation (eg, write radio image). device_specific.IncrementalOTA_InstallEnd() if OPTIONS.extra_script is not None: script.AppendExtra(OPTIONS.extra_script) # Patch the build.prop file last, so if something fails but the # device can still come up, it appears to be the old build and will # get set the OTA package again to retry. script.Print("Patching remaining system files...") system_diff.EmitDeferredPatches(script) if OPTIONS.wipe_user_data: script.Print("Erasing user data...") script.FormatPartition("/data") if OPTIONS.two_step: script.AppendExtra(""" set_stage("%(bcb_dev)s", ""); endif; endif; """ % bcb_dev) script.AddToZip(target_zip, output_zip, input_path=OPTIONS.updater_binary) WriteMetadata(metadata, output_zip) def main(argv): def option_handler(o, a): if o == "--board_config": pass # deprecated elif o in ("-k", "--package_key"): OPTIONS.package_key = a elif o in ("-i", "--incremental_from"): OPTIONS.incremental_source = a elif o in ("-w", "--wipe_user_data"): OPTIONS.wipe_user_data = True elif o in ("-n", "--no_prereq"): OPTIONS.omit_prereq = True elif o in ("-o", "--oem_settings"): OPTIONS.oem_source = a elif o in ("-e", "--extra_script"): OPTIONS.extra_script = a elif o in ("-a", "--aslr_mode"): if a in ("on", "On", "true", "True", "yes", "Yes"): OPTIONS.aslr_mode = True else: OPTIONS.aslr_mode = False elif o in ("-t", "--worker_threads"): if a.isdigit(): OPTIONS.worker_threads = int(a) else: raise ValueError("Cannot parse value %r for option %r - only " "integers are allowed." % (a, o)) elif o in ("-2", "--two_step"): OPTIONS.two_step = True elif o == "--no_signing": OPTIONS.no_signing = True elif o == "--block": OPTIONS.block_based = True elif o in ("-b", "--binary"): OPTIONS.updater_binary = a elif o in ("--no_fallback_to_full",): OPTIONS.fallback_to_full = False else: return False return True args = common.ParseOptions(argv, __doc__, extra_opts="b:k:i:d:wne:t:a:2o:", extra_long_opts=["board_config=", "package_key=", "incremental_from=", "wipe_user_data", "no_prereq", "extra_script=", "worker_threads=", "aslr_mode=", "two_step", "no_signing", "block", "binary=", "oem_settings=", "no_fallback_to_full", ], extra_option_handler=option_handler) if len(args) != 2: common.Usage(__doc__) sys.exit(1) if OPTIONS.extra_script is not None: OPTIONS.extra_script = open(OPTIONS.extra_script).read() print "unzipping target target-files..." OPTIONS.input_tmp, input_zip = common.UnzipTemp(args[0]) OPTIONS.target_tmp = OPTIONS.input_tmp OPTIONS.info_dict = common.LoadInfoDict(input_zip) # If this image was originally labelled with SELinux contexts, make sure we # also apply the labels in our new image. During building, the "file_contexts" # is in the out/ directory tree, but for repacking from target-files.zip it's # in the root directory of the ramdisk. if "selinux_fc" in OPTIONS.info_dict: OPTIONS.info_dict["selinux_fc"] = os.path.join(OPTIONS.input_tmp, "BOOT", "RAMDISK", "file_contexts") if OPTIONS.verbose: print "--- target info ---" common.DumpInfoDict(OPTIONS.info_dict) # If the caller explicitly specified the device-specific extensions # path via -s/--device_specific, use that. Otherwise, use # META/releasetools.py if it is present in the target target_files. # Otherwise, take the path of the file from 'tool_extensions' in the # info dict and look for that in the local filesystem, relative to # the current directory. if OPTIONS.device_specific is None: from_input = os.path.join(OPTIONS.input_tmp, "META", "releasetools.py") if os.path.exists(from_input): print "(using device-specific extensions from target_files)" OPTIONS.device_specific = from_input else: OPTIONS.device_specific = OPTIONS.info_dict.get("tool_extensions", None) if OPTIONS.device_specific is not None: OPTIONS.device_specific = os.path.abspath(OPTIONS.device_specific) while True: if OPTIONS.no_signing: if os.path.exists(args[1]): os.unlink(args[1]) output_zip = zipfile.ZipFile(args[1], "w", compression=zipfile.ZIP_DEFLATED) else: temp_zip_file = tempfile.NamedTemporaryFile() output_zip = zipfile.ZipFile(temp_zip_file, "w", compression=zipfile.ZIP_DEFLATED) if OPTIONS.incremental_source is None: WriteFullOTAPackage(input_zip, output_zip) if OPTIONS.package_key is None: OPTIONS.package_key = OPTIONS.info_dict.get( "default_system_dev_certificate", "build/target/product/security/testkey") break else: print "unzipping source target-files..." OPTIONS.source_tmp, source_zip = common.UnzipTemp(OPTIONS.incremental_source) OPTIONS.target_info_dict = OPTIONS.info_dict OPTIONS.source_info_dict = common.LoadInfoDict(source_zip) if "selinux_fc" in OPTIONS.source_info_dict: OPTIONS.source_info_dict["selinux_fc"] = os.path.join(OPTIONS.source_tmp, "BOOT", "RAMDISK", "file_contexts") if OPTIONS.package_key is None: OPTIONS.package_key = OPTIONS.source_info_dict.get( "default_system_dev_certificate", "build/target/product/security/testkey") if OPTIONS.verbose: print "--- source info ---" common.DumpInfoDict(OPTIONS.source_info_dict) try: WriteIncrementalOTAPackage(input_zip, source_zip, output_zip) break except ValueError: if not OPTIONS.fallback_to_full: raise print "--- failed to build incremental; falling back to full ---" OPTIONS.incremental_source = None output_zip.close() output_zip.close() if not OPTIONS.no_signing: SignOutput(temp_zip_file.name, args[1]) temp_zip_file.close() common.Cleanup() print "done." if __name__ == '__main__': try: common.CloseInheritedPipes() main(sys.argv[1:]) except common.ExternalError, e: print print " ERROR: %s" % (e,) print sys.exit(1)