2ed8bfa7fd
Fabricated Runtime Resource Overlays are overlays that are generated at runtime and are stored in the data/ partition. The system can fabricate RROs at runtime to dynamically theme the device. Idmaps can now be created from APK RROs and fabricated RROs. Rather than operating on ApkAssets, libidmap2 now operates on abstract resource "containers" that supply resource values. Target resource containers implement methods needed to query overlayable and target overlay information. Currently only APKs can be loaded as target resource containers. Overlay resource containers implement methods to supply the mapping of target resource to overlay value and other overlay information. The format of a fabricated RRO is as follows: 0x00 - 0x04 : fabricated overlay magic (always FRRO) 0x04 - 0x08 : file format version 0x08 - 0x0c : crc of version + proto data 0x0c - EOF : proto fabricated overlay data The magic is used to quickly detect if the file is a fabricated overlay. The version is incremented whenever backwards incompatible changes are made to the proto file format. Idmap must always be able to upgrade fabricated overlays from previous versions to new versions, so all previous versions must be checked into the tree. Bug: 172471315 Test: libidmap2_tests && libandroidfw_tests Change-Id: I4c9f29da278672e5695fb57d131a44c11a835180
141 lines
7.0 KiB
C++
141 lines
7.0 KiB
C++
/*
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* Copyright (C) 2018 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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#include <cstdio> // fclose
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#include <memory>
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#include <regex>
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#include <sstream>
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#include <string>
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#include "TestConstants.h"
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#include "TestHelpers.h"
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#include "android-base/stringprintf.h"
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#include "androidfw/ResourceTypes.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "idmap2/Idmap.h"
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#include "idmap2/RawPrintVisitor.h"
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using android::base::StringPrintf;
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using PolicyFlags = android::ResTable_overlayable_policy_header::PolicyFlags;
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namespace android::idmap2 {
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#define ASSERT_CONTAINS_REGEX(pattern, str) \
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do { \
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ASSERT_TRUE(std::regex_search(str, std::regex(pattern))) \
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<< "pattern '" << (pattern) << "' not found in\n--------\n" \
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<< (str) << "--------"; \
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} while (0)
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#define ADDRESS "[0-9a-f]{8}: "
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TEST(RawPrintVisitorTests, CreateRawPrintVisitor) {
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fclose(stderr); // silence expected warnings
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const std::string target_apk_path(GetTestDataPath() + "/target/target.apk");
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auto target = TargetResourceContainer::FromPath(target_apk_path);
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ASSERT_TRUE(target);
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const std::string overlay_apk_path(GetTestDataPath() + "/overlay/overlay.apk");
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auto overlay = OverlayResourceContainer::FromPath(overlay_apk_path);
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ASSERT_TRUE(overlay);
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const auto idmap = Idmap::FromContainers(**target, **overlay, TestConstants::OVERLAY_NAME_DEFAULT,
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PolicyFlags::PUBLIC, /* enforce_overlayable */ true);
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ASSERT_TRUE(idmap);
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std::stringstream stream;
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RawPrintVisitor visitor(stream);
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(*idmap)->accept(&visitor);
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ASSERT_CONTAINS_REGEX(ADDRESS "504d4449 magic\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000008 version\n", stream.str());
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ASSERT_CONTAINS_REGEX(
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StringPrintf(ADDRESS "%s target crc\n", android::idmap2::TestConstants::TARGET_CRC_STRING),
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stream.str());
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ASSERT_CONTAINS_REGEX(
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StringPrintf(ADDRESS "%s overlay crc\n", android::idmap2::TestConstants::OVERLAY_CRC_STRING),
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stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000001 fulfilled policies: public\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000001 enforce overlayable\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000004 target entry count", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000000 target inline entry count", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000004 overlay entry count", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "0000000a string pool index offset", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f010000 target id: integer/int1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f010000 overlay id: integer/int1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000e target id: string/str1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000b overlay id: string/str1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020010 target id: string/str3", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000c overlay id: string/str3", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020011 target id: string/str4", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000d overlay id: string/str4", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f010000 overlay id: integer/int1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f010000 target id: integer/int1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000b overlay id: string/str1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000e target id: string/str1", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000c overlay id: string/str3", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020010 target id: string/str3", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f02000d overlay id: string/str4", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020011 target id: string/str4", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "000000b4 string pool size", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "........ string pool", stream.str());
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}
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TEST(RawPrintVisitorTests, CreateRawPrintVisitorWithoutAccessToApks) {
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fclose(stderr); // silence expected warnings from libandroidfw
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std::string raw(reinterpret_cast<const char*>(kIdmapRawData), kIdmapRawDataLen);
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std::istringstream raw_stream(raw);
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const auto idmap = Idmap::FromBinaryStream(raw_stream);
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ASSERT_TRUE(idmap);
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std::stringstream stream;
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RawPrintVisitor visitor(stream);
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(*idmap)->accept(&visitor);
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ASSERT_CONTAINS_REGEX(ADDRESS "504d4449 magic\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000008 version\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00001234 target crc\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00005678 overlay crc\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000011 fulfilled policies: public|signature\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000001 enforce overlayable\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "0000000b target path size\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "........ target path: targetX.apk\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "0000000c overlay path size\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "........ overlay path: overlayX.apk\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "0000000b overlay name size\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "........ overlay name: OverlayName\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000003 target entry count\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000001 target inline entry count\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000003 overlay entry count\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000000 string pool index offset\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020000 target id\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020000 overlay id\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020000 target id\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS " 11 type: integer\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "12345678 data\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f020000 overlay id\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "7f030002 target id\n", stream.str());
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ASSERT_CONTAINS_REGEX(ADDRESS "00000004 string pool size\n", stream.str());
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ASSERT_CONTAINS_REGEX("000000a4: ........ string pool\n", stream.str());
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}
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} // namespace android::idmap2
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