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/*
* Copyright (C) 2018 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 "fastdeploy.h"
#include <string.h>
#include <algorithm>
#include <array>
#include <memory>
#include "android-base/file.h"
#include "android-base/strings.h"
#include "androidfw/ResourceTypes.h"
#include "androidfw/ZipFileRO.h"
#include "client/file_sync_client.h"
#include "commandline.h"
#include "deployagent.inc" // Generated include via build rule.
#include "deployagentscript.inc" // Generated include via build rule.
#include "fastdeploy/deploypatchgenerator/deploy_patch_generator.h"
#include "fastdeploy/deploypatchgenerator/patch_utils.h"
#include "fastdeploy/proto/ApkEntry.pb.h"
#include "fastdeploycallbacks.h"
#include "sysdeps.h"
#include "adb_utils.h"
static constexpr long kRequiredAgentVersion = 0x00000003;
static constexpr int kPackageMissing = 3;
static constexpr int kInvalidAgentVersion = 4;
static constexpr const char* kDeviceAgentFile = "/data/local/tmp/deployagent.jar";
static constexpr const char* kDeviceAgentScript = "/data/local/tmp/deployagent";
static constexpr bool g_verbose_timings = false;
static FastDeploy_AgentUpdateStrategy g_agent_update_strategy =
FastDeploy_AgentUpdateDifferentVersion;
using APKMetaData = com::android::fastdeploy::APKMetaData;
namespace {
struct TimeReporter {
TimeReporter(const char* label) : label_(label) {}
~TimeReporter() {
if (g_verbose_timings) {
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::steady_clock::now() - start_);
fprintf(stderr, "%s finished in %lldms\n", label_,
static_cast<long long>(duration.count()));
}
}
private:
const char* label_;
std::chrono::steady_clock::time_point start_ = std::chrono::steady_clock::now();
};
#define REPORT_FUNC_TIME() TimeReporter reporter(__func__)
struct FileDeleter {
FileDeleter(const char* path) : path_(path) {}
~FileDeleter() { adb_unlink(path_); }
private:
const char* const path_;
};
} // namespace
int get_device_api_level() {
static const int api_level = [] {
REPORT_FUNC_TIME();
std::vector<char> sdk_version_output_buffer;
std::vector<char> sdk_version_error_buffer;
int api_level = -1;
int status_code =
capture_shell_command("getprop ro.build.version.sdk", &sdk_version_output_buffer,
&sdk_version_error_buffer);
if (status_code == 0 && sdk_version_output_buffer.size() > 0) {
api_level = strtol((char*)sdk_version_output_buffer.data(), nullptr, 10);
}
return api_level;
}();
return api_level;
}
void fastdeploy_set_agent_update_strategy(FastDeploy_AgentUpdateStrategy agent_update_strategy) {
g_agent_update_strategy = agent_update_strategy;
}
static void push_to_device(const void* data, size_t byte_count, const char* dst, bool sync) {
std::vector<const char*> srcs;
TemporaryFile tf;
android::base::WriteFully(tf.fd, data, byte_count);
srcs.push_back(tf.path);
// On Windows, the file needs to be flushed before pushing to device,
// but can't be removed until after the push.
unix_close(tf.release());
if (!do_sync_push(srcs, dst, sync, CompressionType::Any, false)) {
error_exit("Failed to push fastdeploy agent to device.");
}
}
static bool deploy_agent(bool check_time_stamps) {
REPORT_FUNC_TIME();
push_to_device(kDeployAgent, sizeof(kDeployAgent), kDeviceAgentFile, check_time_stamps);
push_to_device(kDeployAgentScript, sizeof(kDeployAgentScript), kDeviceAgentScript,
check_time_stamps);
// on windows the shell script might have lost execute permission
// so need to set this explicitly
const char* kChmodCommandPattern = "chmod 777 %s";
std::string chmod_command =
android::base::StringPrintf(kChmodCommandPattern, kDeviceAgentScript);
int ret = send_shell_command(chmod_command);
if (ret != 0) {
error_exit("Error executing %s returncode: %d", chmod_command.c_str(), ret);
}
return true;
}
static std::string get_string_from_utf16(const char16_t* input, int input_len) {
ssize_t utf8_length = utf16_to_utf8_length(input, input_len);
if (utf8_length <= 0) {
return {};
}
std::string utf8;
utf8.resize(utf8_length);
utf16_to_utf8(input, input_len, &*utf8.begin(), utf8_length + 1);
return utf8;
}
static std::string get_package_name_from_apk(const char* apk_path) {
#undef open
std::unique_ptr<android::ZipFileRO> zip_file((android::ZipFileRO::open)(apk_path));
#define open ___xxx_unix_open
if (zip_file == nullptr) {
perror_exit("Could not open %s", apk_path);
}
android::ZipEntryRO entry = zip_file->findEntryByName("AndroidManifest.xml");
if (entry == nullptr) {
error_exit("Could not find AndroidManifest.xml inside %s", apk_path);
}
uint32_t manifest_len = 0;
if (!zip_file->getEntryInfo(entry, NULL, &manifest_len, NULL, NULL, NULL, NULL)) {
error_exit("Could not read AndroidManifest.xml inside %s", apk_path);
}
std::vector<char> manifest_data(manifest_len);
if (!zip_file->uncompressEntry(entry, manifest_data.data(), manifest_len)) {
error_exit("Could not uncompress AndroidManifest.xml inside %s", apk_path);
}
android::ResXMLTree tree;
android::status_t setto_status = tree.setTo(manifest_data.data(), manifest_len, true);
if (setto_status != android::OK) {
error_exit("Could not parse AndroidManifest.xml inside %s", apk_path);
}
android::ResXMLParser::event_code_t code;
while ((code = tree.next()) != android::ResXMLParser::BAD_DOCUMENT &&
code != android::ResXMLParser::END_DOCUMENT) {
switch (code) {
case android::ResXMLParser::START_TAG: {
size_t element_name_length;
const char16_t* element_name = tree.getElementName(&element_name_length);
if (element_name == nullptr) {
continue;
}
std::u16string element_name_string(element_name, element_name_length);
if (element_name_string == u"manifest") {
for (size_t i = 0; i < tree.getAttributeCount(); i++) {
size_t attribute_name_length;
const char16_t* attribute_name_text =
tree.getAttributeName(i, &attribute_name_length);
if (attribute_name_text == nullptr) {
continue;
}
std::u16string attribute_name_string(attribute_name_text,
attribute_name_length);
if (attribute_name_string == u"package") {
size_t attribute_value_length;
const char16_t* attribute_value_text =
tree.getAttributeStringValue(i, &attribute_value_length);
if (attribute_value_text == nullptr) {
continue;
}
return get_string_from_utf16(attribute_value_text,
attribute_value_length);
}
}
}
break;
}
default:
break;
}
}
error_exit("Could not find package name tag in AndroidManifest.xml inside %s", apk_path);
}
static long parse_agent_version(const std::vector<char>& version_buffer) {
long version = -1;
if (!version_buffer.empty()) {
version = strtol((char*)version_buffer.data(), NULL, 16);
}
return version;
}
static void update_agent_if_necessary() {
switch (g_agent_update_strategy) {
case FastDeploy_AgentUpdateAlways:
deploy_agent(/*check_time_stamps=*/false);
break;
case FastDeploy_AgentUpdateNewerTimeStamp:
deploy_agent(/*check_time_stamps=*/true);
break;
default:
break;
}
}
std::optional<APKMetaData> extract_metadata(const char* apk_path) {
// Update agent if there is a command line argument forcing to do so.
update_agent_if_necessary();
REPORT_FUNC_TIME();
std::string package_name = get_package_name_from_apk(apk_path);
// Dump apk command checks the required vs current agent version and if they match then returns
// the APK dump for package. Doing this in a single call saves round-trip and agent launch time.
constexpr const char* kAgentDumpCommandPattern = "/data/local/tmp/deployagent dump %ld %s";
std::string dump_command = android::base::StringPrintf(
kAgentDumpCommandPattern, kRequiredAgentVersion, package_name.c_str());
std::vector<char> dump_out_buffer;
std::vector<char> dump_error_buffer;
int returnCode =
capture_shell_command(dump_command.c_str(), &dump_out_buffer, &dump_error_buffer);
if (returnCode >= kInvalidAgentVersion) {
// Agent has wrong version or missing.
long agent_version = parse_agent_version(dump_out_buffer);
if (agent_version < 0) {
printf("Could not detect agent on device, deploying\n");
} else {
printf("Device agent version is (%ld), (%ld) is required, re-deploying\n",
agent_version, kRequiredAgentVersion);
}
deploy_agent(/*check_time_stamps=*/false);
// Retry with new agent.
dump_out_buffer.clear();
dump_error_buffer.clear();
returnCode =
capture_shell_command(dump_command.c_str(), &dump_out_buffer, &dump_error_buffer);
}
if (returnCode != 0) {
if (returnCode == kInvalidAgentVersion) {
long agent_version = parse_agent_version(dump_out_buffer);
error_exit(
"After update agent version remains incorrect! Expected %ld but version is %ld",
kRequiredAgentVersion, agent_version);
}
if (returnCode == kPackageMissing) {
fprintf(stderr, "Package %s not found, falling back to install\n",
package_name.c_str());
return {};
}
fprintf(stderr, "Executing %s returned %d\n", dump_command.c_str(), returnCode);
fprintf(stderr, "%*s\n", int(dump_error_buffer.size()), dump_error_buffer.data());
error_exit("Aborting");
}
com::android::fastdeploy::APKDump dump;
if (!dump.ParseFromArray(dump_out_buffer.data(), dump_out_buffer.size())) {
fprintf(stderr, "Can't parse output of %s\n", dump_command.c_str());
error_exit("Aborting");
}
return PatchUtils::GetDeviceAPKMetaData(dump);
}
unique_fd install_patch(int argc, const char** argv) {
REPORT_FUNC_TIME();
constexpr char kAgentApplyServicePattern[] = "shell:/data/local/tmp/deployagent apply - -pm %s";
std::vector<unsigned char> apply_output_buffer;
std::vector<unsigned char> apply_error_buffer;
std::string argsString;
bool rSwitchPresent = false;
for (int i = 0; i < argc; i++) {
argsString.append(argv[i]);
argsString.append(" ");
if (!strcmp(argv[i], "-r")) {
rSwitchPresent = true;
}
}
if (!rSwitchPresent) {
argsString.append("-r");
}
std::string error;
std::string apply_patch_service_string =
android::base::StringPrintf(kAgentApplyServicePattern, argsString.c_str());
unique_fd fd{adb_connect(apply_patch_service_string, &error)};
if (fd < 0) {
error_exit("Executing %s returned %s", apply_patch_service_string.c_str(), error.c_str());
}
return fd;
}
unique_fd apply_patch_on_device(const char* output_path) {
REPORT_FUNC_TIME();
constexpr char kAgentApplyServicePattern[] = "shell:/data/local/tmp/deployagent apply - -o %s";
std::string error;
std::string apply_patch_service_string =
android::base::StringPrintf(kAgentApplyServicePattern, output_path);
unique_fd fd{adb_connect(apply_patch_service_string, &error)};
if (fd < 0) {
error_exit("Executing %s returned %s", apply_patch_service_string.c_str(), error.c_str());
}
return fd;
}
static void create_patch(const char* apk_path, APKMetaData metadata, borrowed_fd patch_fd) {
REPORT_FUNC_TIME();
DeployPatchGenerator generator(/*is_verbose=*/false);
bool success = generator.CreatePatch(apk_path, std::move(metadata), patch_fd);
if (!success) {
error_exit("Failed to create patch for %s", apk_path);
}
}
int stream_patch(const char* apk_path, APKMetaData metadata, unique_fd patch_fd) {
create_patch(apk_path, std::move(metadata), patch_fd);
REPORT_FUNC_TIME();
return read_and_dump(patch_fd.get());
}