8cf5c8f60f
Clean up the duplicated codes that handle the zip files in bootable/recovery; and rename the library of the remaining utility functions to libotautil. Test: Update package installed successfully on angler. Bug: 19472796 Change-Id: Iea8962fcf3004473cb0322b6bb3a9ea3ca7f679e
121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/*
|
|
* Copyright (C) 2016 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.
|
|
*/
|
|
|
|
#include "ZipUtil.h"
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <utime.h>
|
|
|
|
#include <string>
|
|
|
|
#include <android-base/logging.h>
|
|
#include <android-base/unique_fd.h>
|
|
#include <selinux/label.h>
|
|
#include <selinux/selinux.h>
|
|
#include <ziparchive/zip_archive.h>
|
|
|
|
#include "DirUtil.h"
|
|
|
|
static constexpr mode_t UNZIP_DIRMODE = 0755;
|
|
static constexpr mode_t UNZIP_FILEMODE = 0644;
|
|
|
|
bool ExtractPackageRecursive(ZipArchiveHandle zip, const std::string& zip_path,
|
|
const std::string& dest_path, const struct utimbuf* timestamp,
|
|
struct selabel_handle* sehnd) {
|
|
if (!zip_path.empty() && zip_path[0] == '/') {
|
|
LOG(ERROR) << "ExtractPackageRecursive(): zip_path must be a relative path " << zip_path;
|
|
return false;
|
|
}
|
|
if (dest_path.empty() || dest_path[0] != '/') {
|
|
LOG(ERROR) << "ExtractPackageRecursive(): dest_path must be an absolute path " << dest_path;
|
|
return false;
|
|
}
|
|
|
|
void* cookie;
|
|
std::string target_dir(dest_path);
|
|
if (dest_path.back() != '/') {
|
|
target_dir += '/';
|
|
}
|
|
std::string prefix_path(zip_path);
|
|
if (!zip_path.empty() && zip_path.back() != '/') {
|
|
prefix_path += '/';
|
|
}
|
|
const ZipString zip_prefix(prefix_path.c_str());
|
|
|
|
int ret = StartIteration(zip, &cookie, &zip_prefix, nullptr);
|
|
if (ret != 0) {
|
|
LOG(ERROR) << "failed to start iterating zip entries.";
|
|
return false;
|
|
}
|
|
|
|
std::unique_ptr<void, decltype(&EndIteration)> guard(cookie, EndIteration);
|
|
ZipEntry entry;
|
|
ZipString name;
|
|
int extractCount = 0;
|
|
while (Next(cookie, &entry, &name) == 0) {
|
|
std::string entry_name(name.name, name.name + name.name_length);
|
|
CHECK_LE(prefix_path.size(), entry_name.size());
|
|
std::string path = target_dir + entry_name.substr(prefix_path.size());
|
|
// Skip dir.
|
|
if (path.back() == '/') {
|
|
continue;
|
|
}
|
|
//TODO(b/31917448) handle the symlink.
|
|
|
|
if (dirCreateHierarchy(path.c_str(), UNZIP_DIRMODE, timestamp, true, sehnd) != 0) {
|
|
LOG(ERROR) << "failed to create dir for " << path;
|
|
return false;
|
|
}
|
|
|
|
char *secontext = NULL;
|
|
if (sehnd) {
|
|
selabel_lookup(sehnd, &secontext, path.c_str(), UNZIP_FILEMODE);
|
|
setfscreatecon(secontext);
|
|
}
|
|
android::base::unique_fd fd(open(path.c_str(), O_CREAT|O_WRONLY|O_TRUNC, UNZIP_FILEMODE));
|
|
if (fd == -1) {
|
|
PLOG(ERROR) << "Can't create target file \"" << path << "\"";
|
|
return false;
|
|
}
|
|
if (secontext) {
|
|
freecon(secontext);
|
|
setfscreatecon(NULL);
|
|
}
|
|
|
|
int err = ExtractEntryToFile(zip, &entry, fd);
|
|
if (err != 0) {
|
|
LOG(ERROR) << "Error extracting \"" << path << "\" : " << ErrorCodeString(err);
|
|
return false;
|
|
}
|
|
|
|
if (fsync(fd) != 0) {
|
|
PLOG(ERROR) << "Error syncing file descriptor when extracting \"" << path << "\"";
|
|
return false;
|
|
}
|
|
|
|
if (timestamp != nullptr && utime(path.c_str(), timestamp)) {
|
|
PLOG(ERROR) << "Error touching \"" << path << "\"";
|
|
return false;
|
|
}
|
|
|
|
LOG(INFO) << "Extracted file \"" << path << "\"";
|
|
++extractCount;
|
|
}
|
|
|
|
LOG(INFO) << "Extracted " << extractCount << " file(s)";
|
|
return true;
|
|
}
|