cba9579158
When there is overlay package in system_ext, turn on POLICY_SYSTEM_PARTITION.
In other words, overlay pacakge in /system_ext is considered as system's one
Test: mv vendor/overlay/framework-res__auto_generated_rro.apk system_ext/overlay
and then check if it works properly.
Bug: 136715327
Change-Id: Ib225368eae41203a8630f4310d26e9cf1afa706a
1699 lines
50 KiB
C++
1699 lines
50 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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// Provide access to read-only assets.
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//
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#define LOG_TAG "asset"
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#define ATRACE_TAG ATRACE_TAG_RESOURCES
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//#define LOG_NDEBUG 0
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#include <androidfw/Asset.h>
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#include <androidfw/AssetDir.h>
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#include <androidfw/AssetManager.h>
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#include <androidfw/misc.h>
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#include <androidfw/ResourceTypes.h>
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#include <androidfw/ZipFileRO.h>
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#include <cutils/atomic.h>
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#include <utils/Log.h>
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#include <utils/String8.h>
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#include <utils/String8.h>
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#include <utils/threads.h>
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#include <utils/Timers.h>
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#include <utils/Trace.h>
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#ifndef _WIN32
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#include <sys/file.h>
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#endif
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <string.h> // strerror
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#include <strings.h>
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#ifndef TEMP_FAILURE_RETRY
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/* Used to retry syscalls that can return EINTR. */
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#define TEMP_FAILURE_RETRY(exp) ({ \
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typeof (exp) _rc; \
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do { \
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_rc = (exp); \
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} while (_rc == -1 && errno == EINTR); \
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_rc; })
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#endif
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using namespace android;
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static const bool kIsDebug = false;
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static const char* kAssetsRoot = "assets";
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static const char* kAppZipName = NULL; //"classes.jar";
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static const char* kSystemAssets = "framework/framework-res.apk";
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static const char* kResourceCache = "resource-cache";
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static const char* kExcludeExtension = ".EXCLUDE";
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static Asset* const kExcludedAsset = (Asset*) 0xd000000d;
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static volatile int32_t gCount = 0;
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const char* AssetManager::RESOURCES_FILENAME = "resources.arsc";
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const char* AssetManager::IDMAP_BIN = "/system/bin/idmap";
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const char* AssetManager::VENDOR_OVERLAY_DIR = "/vendor/overlay";
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const char* AssetManager::PRODUCT_OVERLAY_DIR = "/product/overlay";
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const char* AssetManager::SYSTEM_EXT_OVERLAY_DIR = "/system_ext/overlay";
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const char* AssetManager::ODM_OVERLAY_DIR = "/odm/overlay";
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const char* AssetManager::OEM_OVERLAY_DIR = "/oem/overlay";
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const char* AssetManager::OVERLAY_THEME_DIR_PROPERTY = "ro.boot.vendor.overlay.theme";
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const char* AssetManager::TARGET_PACKAGE_NAME = "android";
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const char* AssetManager::TARGET_APK_PATH = "/system/framework/framework-res.apk";
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const char* AssetManager::IDMAP_DIR = "/data/resource-cache";
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namespace {
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String8 idmapPathForPackagePath(const String8& pkgPath) {
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const char* root = getenv("ANDROID_DATA");
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LOG_ALWAYS_FATAL_IF(root == NULL, "ANDROID_DATA not set");
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String8 path(root);
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path.appendPath(kResourceCache);
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char buf[256]; // 256 chars should be enough for anyone...
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strncpy(buf, pkgPath.string(), 255);
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buf[255] = '\0';
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char* filename = buf;
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while (*filename && *filename == '/') {
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++filename;
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}
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char* p = filename;
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while (*p) {
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if (*p == '/') {
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*p = '@';
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}
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++p;
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}
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path.appendPath(filename);
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path.append("@idmap");
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return path;
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}
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/*
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* Like strdup(), but uses C++ "new" operator instead of malloc.
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*/
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static char* strdupNew(const char* str) {
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char* newStr;
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int len;
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if (str == NULL)
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return NULL;
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len = strlen(str);
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newStr = new char[len+1];
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memcpy(newStr, str, len+1);
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return newStr;
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}
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} // namespace
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/*
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* ===========================================================================
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* AssetManager
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* ===========================================================================
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*/
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int32_t AssetManager::getGlobalCount() {
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return gCount;
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}
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AssetManager::AssetManager() :
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mLocale(NULL), mResources(NULL), mConfig(new ResTable_config) {
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int count = android_atomic_inc(&gCount) + 1;
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if (kIsDebug) {
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ALOGI("Creating AssetManager %p #%d\n", this, count);
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}
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memset(mConfig, 0, sizeof(ResTable_config));
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}
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AssetManager::~AssetManager() {
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int count = android_atomic_dec(&gCount);
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if (kIsDebug) {
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ALOGI("Destroying AssetManager in %p #%d\n", this, count);
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} else {
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ALOGV("Destroying AssetManager in %p #%d\n", this, count);
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}
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// Manually close any fd paths for which we have not yet opened their zip (which
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// will take ownership of the fd and close it when done).
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for (size_t i=0; i<mAssetPaths.size(); i++) {
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ALOGV("Cleaning path #%d: fd=%d, zip=%p", (int)i, mAssetPaths[i].rawFd,
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mAssetPaths[i].zip.get());
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if (mAssetPaths[i].rawFd >= 0 && mAssetPaths[i].zip == NULL) {
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close(mAssetPaths[i].rawFd);
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}
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}
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delete mConfig;
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delete mResources;
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// don't have a String class yet, so make sure we clean up
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delete[] mLocale;
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}
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bool AssetManager::addAssetPath(
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const String8& path, int32_t* cookie, bool appAsLib, bool isSystemAsset) {
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AutoMutex _l(mLock);
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asset_path ap;
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String8 realPath(path);
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if (kAppZipName) {
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realPath.appendPath(kAppZipName);
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}
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ap.type = ::getFileType(realPath.string());
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if (ap.type == kFileTypeRegular) {
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ap.path = realPath;
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} else {
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ap.path = path;
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ap.type = ::getFileType(path.string());
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if (ap.type != kFileTypeDirectory && ap.type != kFileTypeRegular) {
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ALOGW("Asset path %s is neither a directory nor file (type=%d).",
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path.string(), (int)ap.type);
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return false;
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}
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}
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// Skip if we have it already.
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for (size_t i=0; i<mAssetPaths.size(); i++) {
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if (mAssetPaths[i].path == ap.path) {
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if (cookie) {
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*cookie = static_cast<int32_t>(i+1);
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}
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return true;
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}
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}
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ALOGV("In %p Asset %s path: %s", this,
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ap.type == kFileTypeDirectory ? "dir" : "zip", ap.path.string());
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ap.isSystemAsset = isSystemAsset;
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ssize_t apPos = mAssetPaths.add(ap);
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// new paths are always added at the end
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if (cookie) {
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*cookie = static_cast<int32_t>(mAssetPaths.size());
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}
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#ifdef __ANDROID__
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// Load overlays, if any
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asset_path oap;
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for (size_t idx = 0; mZipSet.getOverlay(ap.path, idx, &oap); idx++) {
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oap.isSystemAsset = isSystemAsset;
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mAssetPaths.add(oap);
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}
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#endif
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if (mResources != NULL) {
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appendPathToResTable(mAssetPaths.editItemAt(apPos), appAsLib);
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}
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return true;
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}
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bool AssetManager::addOverlayPath(const String8& packagePath, int32_t* cookie)
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{
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const String8 idmapPath = idmapPathForPackagePath(packagePath);
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AutoMutex _l(mLock);
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for (size_t i = 0; i < mAssetPaths.size(); ++i) {
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if (mAssetPaths[i].idmap == idmapPath) {
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*cookie = static_cast<int32_t>(i + 1);
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return true;
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}
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}
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Asset* idmap = NULL;
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if ((idmap = openAssetFromFileLocked(idmapPath, Asset::ACCESS_BUFFER)) == NULL) {
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ALOGW("failed to open idmap file %s\n", idmapPath.string());
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return false;
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}
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String8 targetPath;
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String8 overlayPath;
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if (!ResTable::getIdmapInfo(idmap->getBuffer(false), idmap->getLength(),
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NULL, NULL, NULL, &targetPath, &overlayPath)) {
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ALOGW("failed to read idmap file %s\n", idmapPath.string());
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delete idmap;
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return false;
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}
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delete idmap;
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if (overlayPath != packagePath) {
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ALOGW("idmap file %s inconcistent: expected path %s does not match actual path %s\n",
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idmapPath.string(), packagePath.string(), overlayPath.string());
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return false;
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}
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if (access(targetPath.string(), R_OK) != 0) {
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ALOGW("failed to access file %s: %s\n", targetPath.string(), strerror(errno));
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return false;
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}
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if (access(idmapPath.string(), R_OK) != 0) {
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ALOGW("failed to access file %s: %s\n", idmapPath.string(), strerror(errno));
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return false;
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}
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if (access(overlayPath.string(), R_OK) != 0) {
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ALOGW("failed to access file %s: %s\n", overlayPath.string(), strerror(errno));
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return false;
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}
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asset_path oap;
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oap.path = overlayPath;
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oap.type = ::getFileType(overlayPath.string());
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oap.idmap = idmapPath;
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#if 0
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ALOGD("Overlay added: targetPath=%s overlayPath=%s idmapPath=%s\n",
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targetPath.string(), overlayPath.string(), idmapPath.string());
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#endif
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mAssetPaths.add(oap);
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*cookie = static_cast<int32_t>(mAssetPaths.size());
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if (mResources != NULL) {
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appendPathToResTable(oap);
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}
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return true;
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}
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bool AssetManager::addAssetFd(
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int fd, const String8& debugPathName, int32_t* cookie, bool appAsLib,
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bool assume_ownership) {
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AutoMutex _l(mLock);
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asset_path ap;
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ap.path = debugPathName;
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ap.rawFd = fd;
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ap.type = kFileTypeRegular;
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ap.assumeOwnership = assume_ownership;
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ALOGV("In %p Asset fd %d name: %s", this, fd, ap.path.string());
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ssize_t apPos = mAssetPaths.add(ap);
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// new paths are always added at the end
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if (cookie) {
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*cookie = static_cast<int32_t>(mAssetPaths.size());
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}
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if (mResources != NULL) {
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appendPathToResTable(mAssetPaths.editItemAt(apPos), appAsLib);
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}
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return true;
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}
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bool AssetManager::createIdmap(const char* targetApkPath, const char* overlayApkPath,
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uint32_t targetCrc, uint32_t overlayCrc, uint32_t** outData, size_t* outSize)
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{
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AutoMutex _l(mLock);
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const String8 paths[2] = { String8(targetApkPath), String8(overlayApkPath) };
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Asset* assets[2] = {NULL, NULL};
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bool ret = false;
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{
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ResTable tables[2];
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for (int i = 0; i < 2; ++i) {
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asset_path ap;
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ap.type = kFileTypeRegular;
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ap.path = paths[i];
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assets[i] = openNonAssetInPathLocked("resources.arsc",
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Asset::ACCESS_BUFFER, ap);
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if (assets[i] == NULL) {
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ALOGW("failed to find resources.arsc in %s\n", ap.path.string());
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goto exit;
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}
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if (tables[i].add(assets[i]) != NO_ERROR) {
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ALOGW("failed to add %s to resource table", paths[i].string());
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goto exit;
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}
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}
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ret = tables[1].createIdmap(tables[0], targetCrc, overlayCrc,
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targetApkPath, overlayApkPath, (void**)outData, outSize) == NO_ERROR;
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}
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exit:
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delete assets[0];
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delete assets[1];
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return ret;
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}
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bool AssetManager::addDefaultAssets()
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{
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const char* root = getenv("ANDROID_ROOT");
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LOG_ALWAYS_FATAL_IF(root == NULL, "ANDROID_ROOT not set");
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String8 path(root);
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path.appendPath(kSystemAssets);
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return addAssetPath(path, NULL, false /* appAsLib */, true /* isSystemAsset */);
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}
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int32_t AssetManager::nextAssetPath(const int32_t cookie) const
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{
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AutoMutex _l(mLock);
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const size_t next = static_cast<size_t>(cookie) + 1;
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return next > mAssetPaths.size() ? -1 : next;
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}
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String8 AssetManager::getAssetPath(const int32_t cookie) const
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{
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AutoMutex _l(mLock);
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const size_t which = static_cast<size_t>(cookie) - 1;
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if (which < mAssetPaths.size()) {
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return mAssetPaths[which].path;
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}
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return String8();
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}
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void AssetManager::setLocaleLocked(const char* locale)
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{
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if (mLocale != NULL) {
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delete[] mLocale;
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}
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|
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mLocale = strdupNew(locale);
|
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updateResourceParamsLocked();
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}
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|
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void AssetManager::setConfiguration(const ResTable_config& config, const char* locale)
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{
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AutoMutex _l(mLock);
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*mConfig = config;
|
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if (locale) {
|
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setLocaleLocked(locale);
|
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} else if (config.language[0] != 0) {
|
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char spec[RESTABLE_MAX_LOCALE_LEN];
|
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config.getBcp47Locale(spec);
|
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setLocaleLocked(spec);
|
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} else {
|
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updateResourceParamsLocked();
|
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}
|
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}
|
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|
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void AssetManager::getConfiguration(ResTable_config* outConfig) const
|
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{
|
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AutoMutex _l(mLock);
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*outConfig = *mConfig;
|
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}
|
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|
|
/*
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* Open an asset.
|
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*
|
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* The data could be in any asset path. Each asset path could be:
|
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* - A directory on disk.
|
|
* - A Zip archive, uncompressed or compressed.
|
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*
|
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* If the file is in a directory, it could have a .gz suffix, meaning it is compressed.
|
|
*
|
|
* We should probably reject requests for "illegal" filenames, e.g. those
|
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* with illegal characters or "../" backward relative paths.
|
|
*/
|
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Asset* AssetManager::open(const char* fileName, AccessMode mode)
|
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{
|
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AutoMutex _l(mLock);
|
|
|
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LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
|
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String8 assetName(kAssetsRoot);
|
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assetName.appendPath(fileName);
|
|
|
|
/*
|
|
* For each top-level asset path, search for the asset.
|
|
*/
|
|
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
ALOGV("Looking for asset '%s' in '%s'\n",
|
|
assetName.string(), mAssetPaths.itemAt(i).path.string());
|
|
Asset* pAsset = openNonAssetInPathLocked(assetName.string(), mode,
|
|
mAssetPaths.editItemAt(i));
|
|
if (pAsset != NULL) {
|
|
return pAsset != kExcludedAsset ? pAsset : NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Open a non-asset file as if it were an asset.
|
|
*
|
|
* The "fileName" is the partial path starting from the application name.
|
|
*/
|
|
Asset* AssetManager::openNonAsset(const char* fileName, AccessMode mode, int32_t* outCookie)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
|
|
/*
|
|
* For each top-level asset path, search for the asset.
|
|
*/
|
|
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
ALOGV("Looking for non-asset '%s' in '%s'\n", fileName, mAssetPaths.itemAt(i).path.string());
|
|
Asset* pAsset = openNonAssetInPathLocked(
|
|
fileName, mode, mAssetPaths.editItemAt(i));
|
|
if (pAsset != NULL) {
|
|
if (outCookie != NULL) *outCookie = static_cast<int32_t>(i + 1);
|
|
return pAsset != kExcludedAsset ? pAsset : NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
Asset* AssetManager::openNonAsset(const int32_t cookie, const char* fileName, AccessMode mode)
|
|
{
|
|
const size_t which = static_cast<size_t>(cookie) - 1;
|
|
|
|
AutoMutex _l(mLock);
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
|
|
if (which < mAssetPaths.size()) {
|
|
ALOGV("Looking for non-asset '%s' in '%s'\n", fileName,
|
|
mAssetPaths.itemAt(which).path.string());
|
|
Asset* pAsset = openNonAssetInPathLocked(
|
|
fileName, mode, mAssetPaths.editItemAt(which));
|
|
if (pAsset != NULL) {
|
|
return pAsset != kExcludedAsset ? pAsset : NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Get the type of a file in the asset namespace.
|
|
*
|
|
* This currently only works for regular files. All others (including
|
|
* directories) will return kFileTypeNonexistent.
|
|
*/
|
|
FileType AssetManager::getFileType(const char* fileName)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
/*
|
|
* Open the asset. This is less efficient than simply finding the
|
|
* file, but it's not too bad (we don't uncompress or mmap data until
|
|
* the first read() call).
|
|
*/
|
|
pAsset = open(fileName, Asset::ACCESS_STREAMING);
|
|
delete pAsset;
|
|
|
|
if (pAsset == NULL) {
|
|
return kFileTypeNonexistent;
|
|
} else {
|
|
return kFileTypeRegular;
|
|
}
|
|
}
|
|
|
|
bool AssetManager::appendPathToResTable(asset_path& ap, bool appAsLib) const {
|
|
// skip those ap's that correspond to system overlays
|
|
if (ap.isSystemOverlay) {
|
|
return true;
|
|
}
|
|
|
|
Asset* ass = NULL;
|
|
ResTable* sharedRes = NULL;
|
|
bool shared = true;
|
|
bool onlyEmptyResources = true;
|
|
ATRACE_NAME(ap.path.string());
|
|
Asset* idmap = openIdmapLocked(ap);
|
|
size_t nextEntryIdx = mResources->getTableCount();
|
|
ALOGV("Looking for resource asset in '%s'\n", ap.path.string());
|
|
if (ap.type != kFileTypeDirectory && ap.rawFd < 0) {
|
|
if (nextEntryIdx == 0) {
|
|
// The first item is typically the framework resources,
|
|
// which we want to avoid parsing every time.
|
|
sharedRes = const_cast<AssetManager*>(this)->
|
|
mZipSet.getZipResourceTable(ap.path);
|
|
if (sharedRes != NULL) {
|
|
// skip ahead the number of system overlay packages preloaded
|
|
nextEntryIdx = sharedRes->getTableCount();
|
|
}
|
|
}
|
|
if (sharedRes == NULL) {
|
|
ass = const_cast<AssetManager*>(this)->
|
|
mZipSet.getZipResourceTableAsset(ap.path);
|
|
if (ass == NULL) {
|
|
ALOGV("loading resource table %s\n", ap.path.string());
|
|
ass = const_cast<AssetManager*>(this)->
|
|
openNonAssetInPathLocked("resources.arsc",
|
|
Asset::ACCESS_BUFFER,
|
|
ap);
|
|
if (ass != NULL && ass != kExcludedAsset) {
|
|
ass = const_cast<AssetManager*>(this)->
|
|
mZipSet.setZipResourceTableAsset(ap.path, ass);
|
|
}
|
|
}
|
|
|
|
if (nextEntryIdx == 0 && ass != NULL) {
|
|
// If this is the first resource table in the asset
|
|
// manager, then we are going to cache it so that we
|
|
// can quickly copy it out for others.
|
|
ALOGV("Creating shared resources for %s", ap.path.string());
|
|
sharedRes = new ResTable();
|
|
sharedRes->add(ass, idmap, nextEntryIdx + 1, false);
|
|
#ifdef __ANDROID__
|
|
const char* data = getenv("ANDROID_DATA");
|
|
LOG_ALWAYS_FATAL_IF(data == NULL, "ANDROID_DATA not set");
|
|
String8 overlaysListPath(data);
|
|
overlaysListPath.appendPath(kResourceCache);
|
|
overlaysListPath.appendPath("overlays.list");
|
|
addSystemOverlays(overlaysListPath.string(), ap.path, sharedRes, nextEntryIdx);
|
|
#endif
|
|
sharedRes = const_cast<AssetManager*>(this)->
|
|
mZipSet.setZipResourceTable(ap.path, sharedRes);
|
|
}
|
|
}
|
|
} else {
|
|
ALOGV("loading resource table %s\n", ap.path.string());
|
|
ass = const_cast<AssetManager*>(this)->
|
|
openNonAssetInPathLocked("resources.arsc",
|
|
Asset::ACCESS_BUFFER,
|
|
ap);
|
|
shared = false;
|
|
}
|
|
|
|
if ((ass != NULL || sharedRes != NULL) && ass != kExcludedAsset) {
|
|
ALOGV("Installing resource asset %p in to table %p\n", ass, mResources);
|
|
if (sharedRes != NULL) {
|
|
ALOGV("Copying existing resources for %s", ap.path.string());
|
|
mResources->add(sharedRes, ap.isSystemAsset);
|
|
} else {
|
|
ALOGV("Parsing resources for %s", ap.path.string());
|
|
mResources->add(ass, idmap, nextEntryIdx + 1, !shared, appAsLib, ap.isSystemAsset);
|
|
}
|
|
onlyEmptyResources = false;
|
|
|
|
if (!shared) {
|
|
delete ass;
|
|
}
|
|
} else {
|
|
ALOGV("Installing empty resources in to table %p\n", mResources);
|
|
mResources->addEmpty(nextEntryIdx + 1);
|
|
}
|
|
|
|
if (idmap != NULL) {
|
|
delete idmap;
|
|
}
|
|
return onlyEmptyResources;
|
|
}
|
|
|
|
const ResTable* AssetManager::getResTable(bool required) const
|
|
{
|
|
ResTable* rt = mResources;
|
|
if (rt) {
|
|
return rt;
|
|
}
|
|
|
|
// Iterate through all asset packages, collecting resources from each.
|
|
|
|
AutoMutex _l(mLock);
|
|
|
|
if (mResources != NULL) {
|
|
return mResources;
|
|
}
|
|
|
|
if (required) {
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
}
|
|
|
|
mResources = new ResTable();
|
|
updateResourceParamsLocked();
|
|
|
|
bool onlyEmptyResources = true;
|
|
const size_t N = mAssetPaths.size();
|
|
for (size_t i=0; i<N; i++) {
|
|
bool empty = appendPathToResTable(
|
|
const_cast<AssetManager*>(this)->mAssetPaths.editItemAt(i));
|
|
onlyEmptyResources = onlyEmptyResources && empty;
|
|
}
|
|
|
|
if (required && onlyEmptyResources) {
|
|
ALOGW("Unable to find resources file resources.arsc");
|
|
delete mResources;
|
|
mResources = NULL;
|
|
}
|
|
|
|
return mResources;
|
|
}
|
|
|
|
void AssetManager::updateResourceParamsLocked() const
|
|
{
|
|
ATRACE_CALL();
|
|
ResTable* res = mResources;
|
|
if (!res) {
|
|
return;
|
|
}
|
|
|
|
if (mLocale) {
|
|
mConfig->setBcp47Locale(mLocale);
|
|
} else {
|
|
mConfig->clearLocale();
|
|
}
|
|
|
|
res->setParameters(mConfig);
|
|
}
|
|
|
|
Asset* AssetManager::openIdmapLocked(const struct asset_path& ap) const
|
|
{
|
|
Asset* ass = NULL;
|
|
if (ap.idmap.size() != 0) {
|
|
ass = const_cast<AssetManager*>(this)->
|
|
openAssetFromFileLocked(ap.idmap, Asset::ACCESS_BUFFER);
|
|
if (ass) {
|
|
ALOGV("loading idmap %s\n", ap.idmap.string());
|
|
} else {
|
|
ALOGW("failed to load idmap %s\n", ap.idmap.string());
|
|
}
|
|
}
|
|
return ass;
|
|
}
|
|
|
|
void AssetManager::addSystemOverlays(const char* pathOverlaysList,
|
|
const String8& targetPackagePath, ResTable* sharedRes, size_t offset) const
|
|
{
|
|
FILE* fin = fopen(pathOverlaysList, "r");
|
|
if (fin == NULL) {
|
|
return;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
if (TEMP_FAILURE_RETRY(flock(fileno(fin), LOCK_SH)) != 0) {
|
|
fclose(fin);
|
|
return;
|
|
}
|
|
#endif
|
|
char buf[1024];
|
|
while (fgets(buf, sizeof(buf), fin)) {
|
|
// format of each line:
|
|
// <path to apk><space><path to idmap><newline>
|
|
char* space = strchr(buf, ' ');
|
|
char* newline = strchr(buf, '\n');
|
|
asset_path oap;
|
|
|
|
if (space == NULL || newline == NULL || newline < space) {
|
|
continue;
|
|
}
|
|
|
|
oap.path = String8(buf, space - buf);
|
|
oap.type = kFileTypeRegular;
|
|
oap.idmap = String8(space + 1, newline - space - 1);
|
|
oap.isSystemOverlay = true;
|
|
|
|
Asset* oass = const_cast<AssetManager*>(this)->
|
|
openNonAssetInPathLocked("resources.arsc",
|
|
Asset::ACCESS_BUFFER,
|
|
oap);
|
|
|
|
if (oass != NULL) {
|
|
Asset* oidmap = openIdmapLocked(oap);
|
|
offset++;
|
|
sharedRes->add(oass, oidmap, offset + 1, false);
|
|
const_cast<AssetManager*>(this)->mAssetPaths.add(oap);
|
|
const_cast<AssetManager*>(this)->mZipSet.addOverlay(targetPackagePath, oap);
|
|
delete oidmap;
|
|
}
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
TEMP_FAILURE_RETRY(flock(fileno(fin), LOCK_UN));
|
|
#endif
|
|
fclose(fin);
|
|
}
|
|
|
|
const ResTable& AssetManager::getResources(bool required) const
|
|
{
|
|
const ResTable* rt = getResTable(required);
|
|
return *rt;
|
|
}
|
|
|
|
bool AssetManager::isUpToDate()
|
|
{
|
|
AutoMutex _l(mLock);
|
|
return mZipSet.isUpToDate();
|
|
}
|
|
|
|
void AssetManager::getLocales(Vector<String8>* locales, bool includeSystemLocales) const
|
|
{
|
|
ResTable* res = mResources;
|
|
if (res != NULL) {
|
|
res->getLocales(locales, includeSystemLocales, true /* mergeEquivalentLangs */);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Open a non-asset file as if it were an asset, searching for it in the
|
|
* specified app.
|
|
*
|
|
* Pass in a NULL values for "appName" if the common app directory should
|
|
* be used.
|
|
*/
|
|
Asset* AssetManager::openNonAssetInPathLocked(const char* fileName, AccessMode mode,
|
|
asset_path& ap)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
ALOGV("openNonAssetInPath: name=%s type=%d fd=%d", fileName, ap.type, ap.rawFd);
|
|
|
|
/* look at the filesystem on disk */
|
|
if (ap.type == kFileTypeDirectory) {
|
|
String8 path(ap.path);
|
|
path.appendPath(fileName);
|
|
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
|
|
if (pAsset == NULL) {
|
|
/* try again, this time with ".gz" */
|
|
path.append(".gz");
|
|
pAsset = openAssetFromFileLocked(path, mode);
|
|
}
|
|
|
|
if (pAsset != NULL) {
|
|
ALOGV("FOUND NA '%s' on disk", fileName);
|
|
pAsset->setAssetSource(path);
|
|
}
|
|
|
|
/* look inside the zip file */
|
|
} else {
|
|
String8 path(fileName);
|
|
|
|
/* check the appropriate Zip file */
|
|
ZipFileRO* pZip = getZipFileLocked(ap);
|
|
if (pZip != NULL) {
|
|
ALOGV("GOT zip, checking NA '%s'", (const char*) path);
|
|
ZipEntryRO entry = pZip->findEntryByName(path.string());
|
|
if (entry != NULL) {
|
|
ALOGV("FOUND NA in Zip file for %s", (const char*) path);
|
|
pAsset = openAssetFromZipLocked(pZip, entry, mode, path);
|
|
pZip->releaseEntry(entry);
|
|
}
|
|
}
|
|
|
|
if (pAsset != NULL) {
|
|
/* create a "source" name, for debug/display */
|
|
pAsset->setAssetSource(
|
|
createZipSourceNameLocked(ZipSet::getPathName(ap.path.string()), String8(""),
|
|
String8(fileName)));
|
|
}
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Create a "source name" for a file from a Zip archive.
|
|
*/
|
|
String8 AssetManager::createZipSourceNameLocked(const String8& zipFileName,
|
|
const String8& dirName, const String8& fileName)
|
|
{
|
|
String8 sourceName("zip:");
|
|
sourceName.append(zipFileName);
|
|
sourceName.append(":");
|
|
if (dirName.length() > 0) {
|
|
sourceName.appendPath(dirName);
|
|
}
|
|
sourceName.appendPath(fileName);
|
|
return sourceName;
|
|
}
|
|
|
|
/*
|
|
* Create a path to a loose asset (asset-base/app/rootDir).
|
|
*/
|
|
String8 AssetManager::createPathNameLocked(const asset_path& ap, const char* rootDir)
|
|
{
|
|
String8 path(ap.path);
|
|
if (rootDir != NULL) path.appendPath(rootDir);
|
|
return path;
|
|
}
|
|
|
|
/*
|
|
* Return a pointer to one of our open Zip archives. Returns NULL if no
|
|
* matching Zip file exists.
|
|
*/
|
|
ZipFileRO* AssetManager::getZipFileLocked(asset_path& ap)
|
|
{
|
|
ALOGV("getZipFileLocked() in %p: ap=%p zip=%p", this, &ap, ap.zip.get());
|
|
|
|
if (ap.zip != NULL) {
|
|
return ap.zip->getZip();
|
|
}
|
|
|
|
if (ap.rawFd < 0) {
|
|
ALOGV("getZipFileLocked: Creating new zip from path %s", ap.path.string());
|
|
ap.zip = mZipSet.getSharedZip(ap.path);
|
|
} else {
|
|
ALOGV("getZipFileLocked: Creating new zip from fd %d", ap.rawFd);
|
|
ap.zip = SharedZip::create(ap.rawFd, ap.path);
|
|
|
|
}
|
|
return ap.zip != NULL ? ap.zip->getZip() : NULL;
|
|
}
|
|
|
|
/*
|
|
* Try to open an asset from a file on disk.
|
|
*
|
|
* If the file is compressed with gzip, we seek to the start of the
|
|
* deflated data and pass that in (just like we would for a Zip archive).
|
|
*
|
|
* For uncompressed data, we may already have an mmap()ed version sitting
|
|
* around. If so, we want to hand that to the Asset instead.
|
|
*
|
|
* This returns NULL if the file doesn't exist, couldn't be opened, or
|
|
* claims to be a ".gz" but isn't.
|
|
*/
|
|
Asset* AssetManager::openAssetFromFileLocked(const String8& pathName,
|
|
AccessMode mode)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
if (strcasecmp(pathName.getPathExtension().string(), ".gz") == 0) {
|
|
//printf("TRYING '%s'\n", (const char*) pathName);
|
|
pAsset = Asset::createFromCompressedFile(pathName.string(), mode);
|
|
} else {
|
|
//printf("TRYING '%s'\n", (const char*) pathName);
|
|
pAsset = Asset::createFromFile(pathName.string(), mode);
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Given an entry in a Zip archive, create a new Asset object.
|
|
*
|
|
* If the entry is uncompressed, we may want to create or share a
|
|
* slice of shared memory.
|
|
*/
|
|
Asset* AssetManager::openAssetFromZipLocked(const ZipFileRO* pZipFile,
|
|
const ZipEntryRO entry, AccessMode mode, const String8& entryName)
|
|
{
|
|
Asset* pAsset = NULL;
|
|
|
|
// TODO: look for previously-created shared memory slice?
|
|
uint16_t method;
|
|
uint32_t uncompressedLen;
|
|
|
|
//printf("USING Zip '%s'\n", pEntry->getFileName());
|
|
|
|
if (!pZipFile->getEntryInfo(entry, &method, &uncompressedLen, NULL, NULL,
|
|
NULL, NULL))
|
|
{
|
|
ALOGW("getEntryInfo failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
FileMap* dataMap = pZipFile->createEntryFileMap(entry);
|
|
if (dataMap == NULL) {
|
|
ALOGW("create map from entry failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (method == ZipFileRO::kCompressStored) {
|
|
pAsset = Asset::createFromUncompressedMap(dataMap, mode);
|
|
ALOGV("Opened uncompressed entry %s in zip %s mode %d: %p", entryName.string(),
|
|
dataMap->getFileName(), mode, pAsset);
|
|
} else {
|
|
pAsset = Asset::createFromCompressedMap(dataMap,
|
|
static_cast<size_t>(uncompressedLen), mode);
|
|
ALOGV("Opened compressed entry %s in zip %s mode %d: %p", entryName.string(),
|
|
dataMap->getFileName(), mode, pAsset);
|
|
}
|
|
if (pAsset == NULL) {
|
|
/* unexpected */
|
|
ALOGW("create from segment failed\n");
|
|
}
|
|
|
|
return pAsset;
|
|
}
|
|
|
|
/*
|
|
* Open a directory in the asset namespace.
|
|
*
|
|
* An "asset directory" is simply the combination of all asset paths' "assets/" directories.
|
|
*
|
|
* Pass in "" for the root dir.
|
|
*/
|
|
AssetDir* AssetManager::openDir(const char* dirName)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
AssetDir* pDir = NULL;
|
|
SortedVector<AssetDir::FileInfo>* pMergedInfo = NULL;
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
assert(dirName != NULL);
|
|
|
|
//printf("+++ openDir(%s) in '%s'\n", dirName, (const char*) mAssetBase);
|
|
|
|
pDir = new AssetDir;
|
|
|
|
/*
|
|
* Scan the various directories, merging what we find into a single
|
|
* vector. We want to scan them in reverse priority order so that
|
|
* the ".EXCLUDE" processing works correctly. Also, if we decide we
|
|
* want to remember where the file is coming from, we'll get the right
|
|
* version.
|
|
*
|
|
* We start with Zip archives, then do loose files.
|
|
*/
|
|
pMergedInfo = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
size_t i = mAssetPaths.size();
|
|
while (i > 0) {
|
|
i--;
|
|
const asset_path& ap = mAssetPaths.itemAt(i);
|
|
if (ap.type == kFileTypeRegular) {
|
|
ALOGV("Adding directory %s from zip %s", dirName, ap.path.string());
|
|
scanAndMergeZipLocked(pMergedInfo, ap, kAssetsRoot, dirName);
|
|
} else {
|
|
ALOGV("Adding directory %s from dir %s", dirName, ap.path.string());
|
|
scanAndMergeDirLocked(pMergedInfo, ap, kAssetsRoot, dirName);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
printf("FILE LIST:\n");
|
|
for (i = 0; i < (size_t) pMergedInfo->size(); i++) {
|
|
printf(" %d: (%d) '%s'\n", i,
|
|
pMergedInfo->itemAt(i).getFileType(),
|
|
(const char*) pMergedInfo->itemAt(i).getFileName());
|
|
}
|
|
#endif
|
|
|
|
pDir->setFileList(pMergedInfo);
|
|
return pDir;
|
|
}
|
|
|
|
/*
|
|
* Open a directory in the non-asset namespace.
|
|
*
|
|
* An "asset directory" is simply the combination of all asset paths' "assets/" directories.
|
|
*
|
|
* Pass in "" for the root dir.
|
|
*/
|
|
AssetDir* AssetManager::openNonAssetDir(const int32_t cookie, const char* dirName)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
AssetDir* pDir = NULL;
|
|
SortedVector<AssetDir::FileInfo>* pMergedInfo = NULL;
|
|
|
|
LOG_FATAL_IF(mAssetPaths.size() == 0, "No assets added to AssetManager");
|
|
assert(dirName != NULL);
|
|
|
|
//printf("+++ openDir(%s) in '%s'\n", dirName, (const char*) mAssetBase);
|
|
|
|
pDir = new AssetDir;
|
|
|
|
pMergedInfo = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
const size_t which = static_cast<size_t>(cookie) - 1;
|
|
|
|
if (which < mAssetPaths.size()) {
|
|
const asset_path& ap = mAssetPaths.itemAt(which);
|
|
if (ap.type == kFileTypeRegular) {
|
|
ALOGV("Adding directory %s from zip %s", dirName, ap.path.string());
|
|
scanAndMergeZipLocked(pMergedInfo, ap, NULL, dirName);
|
|
} else {
|
|
ALOGV("Adding directory %s from dir %s", dirName, ap.path.string());
|
|
scanAndMergeDirLocked(pMergedInfo, ap, NULL, dirName);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
printf("FILE LIST:\n");
|
|
for (i = 0; i < (size_t) pMergedInfo->size(); i++) {
|
|
printf(" %d: (%d) '%s'\n", i,
|
|
pMergedInfo->itemAt(i).getFileType(),
|
|
(const char*) pMergedInfo->itemAt(i).getFileName());
|
|
}
|
|
#endif
|
|
|
|
pDir->setFileList(pMergedInfo);
|
|
return pDir;
|
|
}
|
|
|
|
/*
|
|
* Scan the contents of the specified directory and merge them into the
|
|
* "pMergedInfo" vector, removing previous entries if we find "exclude"
|
|
* directives.
|
|
*
|
|
* Returns "false" if we found nothing to contribute.
|
|
*/
|
|
bool AssetManager::scanAndMergeDirLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const asset_path& ap, const char* rootDir, const char* dirName)
|
|
{
|
|
assert(pMergedInfo != NULL);
|
|
|
|
//printf("scanAndMergeDir: %s %s %s\n", ap.path.string(), rootDir, dirName);
|
|
|
|
String8 path = createPathNameLocked(ap, rootDir);
|
|
if (dirName[0] != '\0')
|
|
path.appendPath(dirName);
|
|
|
|
SortedVector<AssetDir::FileInfo>* pContents = scanDirLocked(path);
|
|
if (pContents == NULL)
|
|
return false;
|
|
|
|
// if we wanted to do an incremental cache fill, we would do it here
|
|
|
|
/*
|
|
* Process "exclude" directives. If we find a filename that ends with
|
|
* ".EXCLUDE", we look for a matching entry in the "merged" set, and
|
|
* remove it if we find it. We also delete the "exclude" entry.
|
|
*/
|
|
int i, count, exclExtLen;
|
|
|
|
count = pContents->size();
|
|
exclExtLen = strlen(kExcludeExtension);
|
|
for (i = 0; i < count; i++) {
|
|
const char* name;
|
|
int nameLen;
|
|
|
|
name = pContents->itemAt(i).getFileName().string();
|
|
nameLen = strlen(name);
|
|
if (nameLen > exclExtLen &&
|
|
strcmp(name + (nameLen - exclExtLen), kExcludeExtension) == 0)
|
|
{
|
|
String8 match(name, nameLen - exclExtLen);
|
|
int matchIdx;
|
|
|
|
matchIdx = AssetDir::FileInfo::findEntry(pMergedInfo, match);
|
|
if (matchIdx > 0) {
|
|
ALOGV("Excluding '%s' [%s]\n",
|
|
pMergedInfo->itemAt(matchIdx).getFileName().string(),
|
|
pMergedInfo->itemAt(matchIdx).getSourceName().string());
|
|
pMergedInfo->removeAt(matchIdx);
|
|
} else {
|
|
//printf("+++ no match on '%s'\n", (const char*) match);
|
|
}
|
|
|
|
ALOGD("HEY: size=%d removing %d\n", (int)pContents->size(), i);
|
|
pContents->removeAt(i);
|
|
i--; // adjust "for" loop
|
|
count--; // and loop limit
|
|
}
|
|
}
|
|
|
|
mergeInfoLocked(pMergedInfo, pContents);
|
|
|
|
delete pContents;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Scan the contents of the specified directory, and stuff what we find
|
|
* into a newly-allocated vector.
|
|
*
|
|
* Files ending in ".gz" will have their extensions removed.
|
|
*
|
|
* We should probably think about skipping files with "illegal" names,
|
|
* e.g. illegal characters (/\:) or excessive length.
|
|
*
|
|
* Returns NULL if the specified directory doesn't exist.
|
|
*/
|
|
SortedVector<AssetDir::FileInfo>* AssetManager::scanDirLocked(const String8& path)
|
|
{
|
|
SortedVector<AssetDir::FileInfo>* pContents = NULL;
|
|
DIR* dir;
|
|
struct dirent* entry;
|
|
FileType fileType;
|
|
|
|
ALOGV("Scanning dir '%s'\n", path.string());
|
|
|
|
dir = opendir(path.string());
|
|
if (dir == NULL)
|
|
return NULL;
|
|
|
|
pContents = new SortedVector<AssetDir::FileInfo>;
|
|
|
|
while (1) {
|
|
entry = readdir(dir);
|
|
if (entry == NULL)
|
|
break;
|
|
|
|
if (strcmp(entry->d_name, ".") == 0 ||
|
|
strcmp(entry->d_name, "..") == 0)
|
|
continue;
|
|
|
|
#ifdef _DIRENT_HAVE_D_TYPE
|
|
if (entry->d_type == DT_REG)
|
|
fileType = kFileTypeRegular;
|
|
else if (entry->d_type == DT_DIR)
|
|
fileType = kFileTypeDirectory;
|
|
else
|
|
fileType = kFileTypeUnknown;
|
|
#else
|
|
// stat the file
|
|
fileType = ::getFileType(path.appendPathCopy(entry->d_name).string());
|
|
#endif
|
|
|
|
if (fileType != kFileTypeRegular && fileType != kFileTypeDirectory)
|
|
continue;
|
|
|
|
AssetDir::FileInfo info;
|
|
info.set(String8(entry->d_name), fileType);
|
|
if (strcasecmp(info.getFileName().getPathExtension().string(), ".gz") == 0)
|
|
info.setFileName(info.getFileName().getBasePath());
|
|
info.setSourceName(path.appendPathCopy(info.getFileName()));
|
|
pContents->add(info);
|
|
}
|
|
|
|
closedir(dir);
|
|
return pContents;
|
|
}
|
|
|
|
/*
|
|
* Scan the contents out of the specified Zip archive, and merge what we
|
|
* find into "pMergedInfo". If the Zip archive in question doesn't exist,
|
|
* we return immediately.
|
|
*
|
|
* Returns "false" if we found nothing to contribute.
|
|
*/
|
|
bool AssetManager::scanAndMergeZipLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const asset_path& ap, const char* rootDir, const char* baseDirName)
|
|
{
|
|
ZipFileRO* pZip;
|
|
Vector<String8> dirs;
|
|
AssetDir::FileInfo info;
|
|
SortedVector<AssetDir::FileInfo> contents;
|
|
String8 sourceName, zipName, dirName;
|
|
|
|
pZip = mZipSet.getZip(ap.path);
|
|
if (pZip == NULL) {
|
|
ALOGW("Failure opening zip %s\n", ap.path.string());
|
|
return false;
|
|
}
|
|
|
|
zipName = ZipSet::getPathName(ap.path.string());
|
|
|
|
/* convert "sounds" to "rootDir/sounds" */
|
|
if (rootDir != NULL) dirName = rootDir;
|
|
dirName.appendPath(baseDirName);
|
|
|
|
/*
|
|
* Scan through the list of files, looking for a match. The files in
|
|
* the Zip table of contents are not in sorted order, so we have to
|
|
* process the entire list. We're looking for a string that begins
|
|
* with the characters in "dirName", is followed by a '/', and has no
|
|
* subsequent '/' in the stuff that follows.
|
|
*
|
|
* What makes this especially fun is that directories are not stored
|
|
* explicitly in Zip archives, so we have to infer them from context.
|
|
* When we see "sounds/foo.wav" we have to leave a note to ourselves
|
|
* to insert a directory called "sounds" into the list. We store
|
|
* these in temporary vector so that we only return each one once.
|
|
*
|
|
* Name comparisons are case-sensitive to match UNIX filesystem
|
|
* semantics.
|
|
*/
|
|
int dirNameLen = dirName.length();
|
|
void *iterationCookie;
|
|
if (!pZip->startIteration(&iterationCookie, dirName.string(), NULL)) {
|
|
ALOGW("ZipFileRO::startIteration returned false");
|
|
return false;
|
|
}
|
|
|
|
ZipEntryRO entry;
|
|
while ((entry = pZip->nextEntry(iterationCookie)) != NULL) {
|
|
char nameBuf[256];
|
|
|
|
if (pZip->getEntryFileName(entry, nameBuf, sizeof(nameBuf)) != 0) {
|
|
// TODO: fix this if we expect to have long names
|
|
ALOGE("ARGH: name too long?\n");
|
|
continue;
|
|
}
|
|
//printf("Comparing %s in %s?\n", nameBuf, dirName.string());
|
|
if (dirNameLen == 0 || nameBuf[dirNameLen] == '/')
|
|
{
|
|
const char* cp;
|
|
const char* nextSlash;
|
|
|
|
cp = nameBuf + dirNameLen;
|
|
if (dirNameLen != 0)
|
|
cp++; // advance past the '/'
|
|
|
|
nextSlash = strchr(cp, '/');
|
|
//xxx this may break if there are bare directory entries
|
|
if (nextSlash == NULL) {
|
|
/* this is a file in the requested directory */
|
|
|
|
info.set(String8(nameBuf).getPathLeaf(), kFileTypeRegular);
|
|
|
|
info.setSourceName(
|
|
createZipSourceNameLocked(zipName, dirName, info.getFileName()));
|
|
|
|
contents.add(info);
|
|
//printf("FOUND: file '%s'\n", info.getFileName().string());
|
|
} else {
|
|
/* this is a subdir; add it if we don't already have it*/
|
|
String8 subdirName(cp, nextSlash - cp);
|
|
size_t j;
|
|
size_t N = dirs.size();
|
|
|
|
for (j = 0; j < N; j++) {
|
|
if (subdirName == dirs[j]) {
|
|
break;
|
|
}
|
|
}
|
|
if (j == N) {
|
|
dirs.add(subdirName);
|
|
}
|
|
|
|
//printf("FOUND: dir '%s'\n", subdirName.string());
|
|
}
|
|
}
|
|
}
|
|
|
|
pZip->endIteration(iterationCookie);
|
|
|
|
/*
|
|
* Add the set of unique directories.
|
|
*/
|
|
for (int i = 0; i < (int) dirs.size(); i++) {
|
|
info.set(dirs[i], kFileTypeDirectory);
|
|
info.setSourceName(
|
|
createZipSourceNameLocked(zipName, dirName, info.getFileName()));
|
|
contents.add(info);
|
|
}
|
|
|
|
mergeInfoLocked(pMergedInfo, &contents);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/*
|
|
* Merge two vectors of FileInfo.
|
|
*
|
|
* The merged contents will be stuffed into *pMergedInfo.
|
|
*
|
|
* If an entry for a file exists in both "pMergedInfo" and "pContents",
|
|
* we use the newer "pContents" entry.
|
|
*/
|
|
void AssetManager::mergeInfoLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
|
|
const SortedVector<AssetDir::FileInfo>* pContents)
|
|
{
|
|
/*
|
|
* Merge what we found in this directory with what we found in
|
|
* other places.
|
|
*
|
|
* Two basic approaches:
|
|
* (1) Create a new array that holds the unique values of the two
|
|
* arrays.
|
|
* (2) Take the elements from pContents and shove them into pMergedInfo.
|
|
*
|
|
* Because these are vectors of complex objects, moving elements around
|
|
* inside the vector requires constructing new objects and allocating
|
|
* storage for members. With approach #1, we're always adding to the
|
|
* end, whereas with #2 we could be inserting multiple elements at the
|
|
* front of the vector. Approach #1 requires a full copy of the
|
|
* contents of pMergedInfo, but approach #2 requires the same copy for
|
|
* every insertion at the front of pMergedInfo.
|
|
*
|
|
* (We should probably use a SortedVector interface that allows us to
|
|
* just stuff items in, trusting us to maintain the sort order.)
|
|
*/
|
|
SortedVector<AssetDir::FileInfo>* pNewSorted;
|
|
int mergeMax, contMax;
|
|
int mergeIdx, contIdx;
|
|
|
|
pNewSorted = new SortedVector<AssetDir::FileInfo>;
|
|
mergeMax = pMergedInfo->size();
|
|
contMax = pContents->size();
|
|
mergeIdx = contIdx = 0;
|
|
|
|
while (mergeIdx < mergeMax || contIdx < contMax) {
|
|
if (mergeIdx == mergeMax) {
|
|
/* hit end of "merge" list, copy rest of "contents" */
|
|
pNewSorted->add(pContents->itemAt(contIdx));
|
|
contIdx++;
|
|
} else if (contIdx == contMax) {
|
|
/* hit end of "cont" list, copy rest of "merge" */
|
|
pNewSorted->add(pMergedInfo->itemAt(mergeIdx));
|
|
mergeIdx++;
|
|
} else if (pMergedInfo->itemAt(mergeIdx) == pContents->itemAt(contIdx))
|
|
{
|
|
/* items are identical, add newer and advance both indices */
|
|
pNewSorted->add(pContents->itemAt(contIdx));
|
|
mergeIdx++;
|
|
contIdx++;
|
|
} else if (pMergedInfo->itemAt(mergeIdx) < pContents->itemAt(contIdx))
|
|
{
|
|
/* "merge" is lower, add that one */
|
|
pNewSorted->add(pMergedInfo->itemAt(mergeIdx));
|
|
mergeIdx++;
|
|
} else {
|
|
/* "cont" is lower, add that one */
|
|
assert(pContents->itemAt(contIdx) < pMergedInfo->itemAt(mergeIdx));
|
|
pNewSorted->add(pContents->itemAt(contIdx));
|
|
contIdx++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Overwrite the "merged" list with the new stuff.
|
|
*/
|
|
*pMergedInfo = *pNewSorted;
|
|
delete pNewSorted;
|
|
|
|
#if 0 // for Vector, rather than SortedVector
|
|
int i, j;
|
|
for (i = pContents->size() -1; i >= 0; i--) {
|
|
bool add = true;
|
|
|
|
for (j = pMergedInfo->size() -1; j >= 0; j--) {
|
|
/* case-sensitive comparisons, to behave like UNIX fs */
|
|
if (strcmp(pContents->itemAt(i).mFileName,
|
|
pMergedInfo->itemAt(j).mFileName) == 0)
|
|
{
|
|
/* match, don't add this entry */
|
|
add = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (add)
|
|
pMergedInfo->add(pContents->itemAt(i));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* AssetManager::SharedZip
|
|
* ===========================================================================
|
|
*/
|
|
|
|
|
|
Mutex AssetManager::SharedZip::gLock;
|
|
DefaultKeyedVector<String8, wp<AssetManager::SharedZip> > AssetManager::SharedZip::gOpen;
|
|
|
|
AssetManager::SharedZip::SharedZip(const String8& path, time_t modWhen)
|
|
: mPath(path), mZipFile(NULL), mModWhen(modWhen),
|
|
mResourceTableAsset(NULL), mResourceTable(NULL)
|
|
{
|
|
if (kIsDebug) {
|
|
ALOGI("Creating SharedZip %p %s\n", this, (const char*)mPath);
|
|
}
|
|
ALOGV("+++ opening zip '%s'\n", mPath.string());
|
|
mZipFile = ZipFileRO::open(mPath.string());
|
|
if (mZipFile == NULL) {
|
|
ALOGD("failed to open Zip archive '%s'\n", mPath.string());
|
|
}
|
|
}
|
|
|
|
AssetManager::SharedZip::SharedZip(int fd, const String8& path)
|
|
: mPath(path), mZipFile(NULL), mModWhen(0),
|
|
mResourceTableAsset(NULL), mResourceTable(NULL)
|
|
{
|
|
if (kIsDebug) {
|
|
ALOGI("Creating SharedZip %p fd=%d %s\n", this, fd, (const char*)mPath);
|
|
}
|
|
ALOGV("+++ opening zip fd=%d '%s'\n", fd, mPath.string());
|
|
mZipFile = ZipFileRO::openFd(fd, mPath.string());
|
|
if (mZipFile == NULL) {
|
|
::close(fd);
|
|
ALOGD("failed to open Zip archive fd=%d '%s'\n", fd, mPath.string());
|
|
}
|
|
}
|
|
|
|
sp<AssetManager::SharedZip> AssetManager::SharedZip::get(const String8& path,
|
|
bool createIfNotPresent)
|
|
{
|
|
AutoMutex _l(gLock);
|
|
time_t modWhen = getFileModDate(path);
|
|
sp<SharedZip> zip = gOpen.valueFor(path).promote();
|
|
if (zip != NULL && zip->mModWhen == modWhen) {
|
|
return zip;
|
|
}
|
|
if (zip == NULL && !createIfNotPresent) {
|
|
return NULL;
|
|
}
|
|
zip = new SharedZip(path, modWhen);
|
|
gOpen.add(path, zip);
|
|
return zip;
|
|
}
|
|
|
|
sp<AssetManager::SharedZip> AssetManager::SharedZip::create(int fd, const String8& path)
|
|
{
|
|
return new SharedZip(fd, path);
|
|
}
|
|
|
|
ZipFileRO* AssetManager::SharedZip::getZip()
|
|
{
|
|
return mZipFile;
|
|
}
|
|
|
|
Asset* AssetManager::SharedZip::getResourceTableAsset()
|
|
{
|
|
AutoMutex _l(gLock);
|
|
ALOGV("Getting from SharedZip %p resource asset %p\n", this, mResourceTableAsset);
|
|
return mResourceTableAsset;
|
|
}
|
|
|
|
Asset* AssetManager::SharedZip::setResourceTableAsset(Asset* asset)
|
|
{
|
|
{
|
|
AutoMutex _l(gLock);
|
|
if (mResourceTableAsset == NULL) {
|
|
// This is not thread safe the first time it is called, so
|
|
// do it here with the global lock held.
|
|
asset->getBuffer(true);
|
|
mResourceTableAsset = asset;
|
|
return asset;
|
|
}
|
|
}
|
|
delete asset;
|
|
return mResourceTableAsset;
|
|
}
|
|
|
|
ResTable* AssetManager::SharedZip::getResourceTable()
|
|
{
|
|
ALOGV("Getting from SharedZip %p resource table %p\n", this, mResourceTable);
|
|
return mResourceTable;
|
|
}
|
|
|
|
ResTable* AssetManager::SharedZip::setResourceTable(ResTable* res)
|
|
{
|
|
{
|
|
AutoMutex _l(gLock);
|
|
if (mResourceTable == NULL) {
|
|
mResourceTable = res;
|
|
return res;
|
|
}
|
|
}
|
|
delete res;
|
|
return mResourceTable;
|
|
}
|
|
|
|
bool AssetManager::SharedZip::isUpToDate()
|
|
{
|
|
time_t modWhen = getFileModDate(mPath.string());
|
|
return mModWhen == modWhen;
|
|
}
|
|
|
|
void AssetManager::SharedZip::addOverlay(const asset_path& ap)
|
|
{
|
|
mOverlays.add(ap);
|
|
}
|
|
|
|
bool AssetManager::SharedZip::getOverlay(size_t idx, asset_path* out) const
|
|
{
|
|
if (idx >= mOverlays.size()) {
|
|
return false;
|
|
}
|
|
*out = mOverlays[idx];
|
|
return true;
|
|
}
|
|
|
|
AssetManager::SharedZip::~SharedZip()
|
|
{
|
|
if (kIsDebug) {
|
|
ALOGI("Destroying SharedZip %p %s\n", this, (const char*)mPath);
|
|
}
|
|
if (mResourceTable != NULL) {
|
|
delete mResourceTable;
|
|
}
|
|
if (mResourceTableAsset != NULL) {
|
|
delete mResourceTableAsset;
|
|
}
|
|
if (mZipFile != NULL) {
|
|
delete mZipFile;
|
|
ALOGV("Closed '%s'\n", mPath.string());
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* AssetManager::ZipSet
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Destructor. Close any open archives.
|
|
*/
|
|
AssetManager::ZipSet::~ZipSet(void)
|
|
{
|
|
size_t N = mZipFile.size();
|
|
for (size_t i = 0; i < N; i++)
|
|
closeZip(i);
|
|
}
|
|
|
|
/*
|
|
* Close a Zip file and reset the entry.
|
|
*/
|
|
void AssetManager::ZipSet::closeZip(int idx)
|
|
{
|
|
mZipFile.editItemAt(idx) = NULL;
|
|
}
|
|
|
|
/*
|
|
* Retrieve the appropriate Zip file from the set.
|
|
*/
|
|
ZipFileRO* AssetManager::ZipSet::getZip(const String8& path)
|
|
{
|
|
return getSharedZip(path)->getZip();
|
|
}
|
|
|
|
const sp<AssetManager::SharedZip> AssetManager::ZipSet::getSharedZip(const String8& path)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
if (zip == NULL) {
|
|
zip = SharedZip::get(path);
|
|
mZipFile.editItemAt(idx) = zip;
|
|
}
|
|
return zip;
|
|
}
|
|
|
|
Asset* AssetManager::ZipSet::getZipResourceTableAsset(const String8& path)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
if (zip == NULL) {
|
|
zip = SharedZip::get(path);
|
|
mZipFile.editItemAt(idx) = zip;
|
|
}
|
|
return zip->getResourceTableAsset();
|
|
}
|
|
|
|
Asset* AssetManager::ZipSet::setZipResourceTableAsset(const String8& path,
|
|
Asset* asset)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
// doesn't make sense to call before previously accessing.
|
|
return zip->setResourceTableAsset(asset);
|
|
}
|
|
|
|
ResTable* AssetManager::ZipSet::getZipResourceTable(const String8& path)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
if (zip == NULL) {
|
|
zip = SharedZip::get(path);
|
|
mZipFile.editItemAt(idx) = zip;
|
|
}
|
|
return zip->getResourceTable();
|
|
}
|
|
|
|
ResTable* AssetManager::ZipSet::setZipResourceTable(const String8& path,
|
|
ResTable* res)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
// doesn't make sense to call before previously accessing.
|
|
return zip->setResourceTable(res);
|
|
}
|
|
|
|
/*
|
|
* Generate the partial pathname for the specified archive. The caller
|
|
* gets to prepend the asset root directory.
|
|
*
|
|
* Returns something like "common/en-US-noogle.jar".
|
|
*/
|
|
/*static*/ String8 AssetManager::ZipSet::getPathName(const char* zipPath)
|
|
{
|
|
return String8(zipPath);
|
|
}
|
|
|
|
bool AssetManager::ZipSet::isUpToDate()
|
|
{
|
|
const size_t N = mZipFile.size();
|
|
for (size_t i=0; i<N; i++) {
|
|
if (mZipFile[i] != NULL && !mZipFile[i]->isUpToDate()) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void AssetManager::ZipSet::addOverlay(const String8& path, const asset_path& overlay)
|
|
{
|
|
int idx = getIndex(path);
|
|
sp<SharedZip> zip = mZipFile[idx];
|
|
zip->addOverlay(overlay);
|
|
}
|
|
|
|
bool AssetManager::ZipSet::getOverlay(const String8& path, size_t idx, asset_path* out) const
|
|
{
|
|
sp<SharedZip> zip = SharedZip::get(path, false);
|
|
if (zip == NULL) {
|
|
return false;
|
|
}
|
|
return zip->getOverlay(idx, out);
|
|
}
|
|
|
|
/*
|
|
* Compute the zip file's index.
|
|
*
|
|
* "appName", "locale", and "vendor" should be set to NULL to indicate the
|
|
* default directory.
|
|
*/
|
|
int AssetManager::ZipSet::getIndex(const String8& zip) const
|
|
{
|
|
const size_t N = mZipPath.size();
|
|
for (size_t i=0; i<N; i++) {
|
|
if (mZipPath[i] == zip) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
mZipPath.add(zip);
|
|
mZipFile.add(NULL);
|
|
|
|
return mZipPath.size()-1;
|
|
}
|