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-rw-r--r--updater/updater.cpp279
1 files changed, 115 insertions, 164 deletions
diff --git a/updater/updater.cpp b/updater/updater.cpp
index 1d6b172bb..e0679fb0c 100644
--- a/updater/updater.cpp
+++ b/updater/updater.cpp
@@ -16,211 +16,162 @@
#include "updater/updater.h"
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
#include <string>
#include <android-base/logging.h>
#include <android-base/strings.h>
-#include <selinux/android.h>
-#include <selinux/label.h>
-#include <selinux/selinux.h>
-#include <ziparchive/zip_archive.h>
-
-#include "edify/expr.h"
-#include "otafault/config.h"
-#include "otautil/DirUtil.h"
-#include "otautil/SysUtil.h"
-#include "otautil/cache_location.h"
-#include "otautil/error_code.h"
-#include "updater/blockimg.h"
-#include "updater/install.h"
-
-// Generated by the makefile, this function defines the
-// RegisterDeviceExtensions() function, which calls all the
-// registration functions for device-specific extensions.
-#include "register.inc"
-
-// Where in the package we expect to find the edify script to execute.
-// (Note it's "updateR-script", not the older "update-script".)
-static constexpr const char* SCRIPT_NAME = "META-INF/com/google/android/updater-script";
-
-extern bool have_eio_error;
-
-struct selabel_handle *sehandle;
-
-static void UpdaterLogger(android::base::LogId /* id */, android::base::LogSeverity /* severity */,
- const char* /* tag */, const char* /* file */, unsigned int /* line */,
- const char* message) {
- fprintf(stdout, "%s\n", message);
-}
-
-int main(int argc, char** argv) {
- // Various things log information to stdout or stderr more or less
- // at random (though we've tried to standardize on stdout). The
- // log file makes more sense if buffering is turned off so things
- // appear in the right order.
- setbuf(stdout, nullptr);
- setbuf(stderr, nullptr);
-
- // We don't have logcat yet under recovery. Update logs will always be written to stdout
- // (which is redirected to recovery.log).
- android::base::InitLogging(argv, &UpdaterLogger);
-
- if (argc != 4 && argc != 5) {
- LOG(ERROR) << "unexpected number of arguments: " << argc;
- return 1;
- }
- char* version = argv[1];
- if ((version[0] != '1' && version[0] != '2' && version[0] != '3') || version[1] != '\0') {
- // We support version 1, 2, or 3.
- LOG(ERROR) << "wrong updater binary API; expected 1, 2, or 3; got " << argv[1];
- return 2;
+Updater::~Updater() {
+ if (package_handle_) {
+ CloseArchive(package_handle_);
}
+}
+bool Updater::Init(int fd, const std::string& package_filename, bool is_retry,
+ struct selabel_handle* sehandle) {
// Set up the pipe for sending commands back to the parent process.
+ cmd_pipe_.reset(fdopen(fd, "wb"));
+ if (!cmd_pipe_) {
+ LOG(ERROR) << "Failed to open the command pipe";
+ return false;
+ }
- int fd = atoi(argv[2]);
- FILE* cmd_pipe = fdopen(fd, "wb");
- setlinebuf(cmd_pipe);
-
- // Extract the script from the package.
+ setlinebuf(cmd_pipe_.get());
- const char* package_filename = argv[3];
- MemMapping map;
- if (!map.MapFile(package_filename)) {
- LOG(ERROR) << "failed to map package " << argv[3];
- return 3;
+ if (!mapped_package_.MapFile(package_filename)) {
+ LOG(ERROR) << "failed to map package " << package_filename;
+ return false;
}
- ZipArchiveHandle za;
- int open_err = OpenArchiveFromMemory(map.addr, map.length, argv[3], &za);
- if (open_err != 0) {
- LOG(ERROR) << "failed to open package " << argv[3] << ": " << ErrorCodeString(open_err);
- CloseArchive(za);
- return 3;
- }
-
- ZipString script_name(SCRIPT_NAME);
- ZipEntry script_entry;
- int find_err = FindEntry(za, script_name, &script_entry);
- if (find_err != 0) {
- LOG(ERROR) << "failed to find " << SCRIPT_NAME << " in " << package_filename << ": "
- << ErrorCodeString(find_err);
- CloseArchive(za);
- return 4;
+ if (int open_err = OpenArchiveFromMemory(mapped_package_.addr, mapped_package_.length,
+ package_filename.c_str(), &package_handle_);
+ open_err != 0) {
+ LOG(ERROR) << "failed to open package " << package_filename << ": "
+ << ErrorCodeString(open_err);
+ return false;
}
-
- std::string script;
- script.resize(script_entry.uncompressed_length);
- int extract_err = ExtractToMemory(za, &script_entry, reinterpret_cast<uint8_t*>(&script[0]),
- script_entry.uncompressed_length);
- if (extract_err != 0) {
- LOG(ERROR) << "failed to read script from package: " << ErrorCodeString(extract_err);
- CloseArchive(za);
- return 5;
+ if (!ReadEntryToString(package_handle_, SCRIPT_NAME, &updater_script_)) {
+ return false;
}
- // Configure edify's functions.
+ is_retry_ = is_retry;
- RegisterBuiltins();
- RegisterInstallFunctions();
- RegisterBlockImageFunctions();
- RegisterDeviceExtensions();
+ sehandle_ = sehandle;
+ if (!sehandle_) {
+ fprintf(cmd_pipe_.get(), "ui_print Warning: No file_contexts\n");
+ }
+ return true;
+}
+bool Updater::RunUpdate() {
// Parse the script.
-
std::unique_ptr<Expr> root;
int error_count = 0;
- int error = parse_string(script.c_str(), &root, &error_count);
+ int error = ParseString(updater_script_, &root, &error_count);
if (error != 0 || error_count > 0) {
LOG(ERROR) << error_count << " parse errors";
- CloseArchive(za);
- return 6;
- }
-
- sehandle = selinux_android_file_context_handle();
- selinux_android_set_sehandle(sehandle);
-
- if (!sehandle) {
- fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
+ return false;
}
// Evaluate the parsed script.
+ State state(updater_script_, this);
+ state.is_retry = is_retry_;
+
+ bool status = Evaluate(&state, root, &result_);
+ if (status) {
+ fprintf(cmd_pipe_.get(), "ui_print script succeeded: result was [%s]\n", result_.c_str());
+ // Even though the script doesn't abort, still log the cause code if result is empty.
+ if (result_.empty() && state.cause_code != kNoCause) {
+ fprintf(cmd_pipe_.get(), "log cause: %d\n", state.cause_code);
+ }
+ return true;
+ }
- UpdaterInfo updater_info;
- updater_info.cmd_pipe = cmd_pipe;
- updater_info.package_zip = za;
- updater_info.version = atoi(version);
- updater_info.package_zip_addr = map.addr;
- updater_info.package_zip_len = map.length;
+ ParseAndReportErrorCode(&state);
+ return false;
+}
- State state(script, &updater_info);
+void Updater::WriteToCommandPipe(const std::string& message, bool flush) const {
+ fprintf(cmd_pipe_.get(), "%s\n", message.c_str());
+ if (flush) {
+ fflush(cmd_pipe_.get());
+ }
+}
- if (argc == 5) {
- if (strcmp(argv[4], "retry") == 0) {
- state.is_retry = true;
- } else {
- printf("unexpected argument: %s", argv[4]);
+void Updater::UiPrint(const std::string& message) const {
+ // "line1\nline2\n" will be split into 3 tokens: "line1", "line2" and "".
+ // so skip sending empty strings to ui.
+ std::vector<std::string> lines = android::base::Split(message, "\n");
+ for (const auto& line : lines) {
+ if (!line.empty()) {
+ fprintf(cmd_pipe_.get(), "ui_print %s\n", line.c_str());
}
}
- ota_io_init(za, state.is_retry);
- std::string result;
- bool status = Evaluate(&state, root, &result);
-
- if (have_eio_error) {
- fprintf(cmd_pipe, "retry_update\n");
- }
+ // on the updater side, we need to dump the contents to stderr (which has
+ // been redirected to the log file). because the recovery will only print
+ // the contents to screen when processing pipe command ui_print.
+ LOG(INFO) << message;
+}
- if (!status) {
- if (state.errmsg.empty()) {
- LOG(ERROR) << "script aborted (no error message)";
- fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
- } else {
- LOG(ERROR) << "script aborted: " << state.errmsg;
- const std::vector<std::string> lines = android::base::Split(state.errmsg, "\n");
- for (const std::string& line : lines) {
- // Parse the error code in abort message.
- // Example: "E30: This package is for bullhead devices."
- if (!line.empty() && line[0] == 'E') {
- if (sscanf(line.c_str(), "E%d: ", &state.error_code) != 1) {
- LOG(ERROR) << "Failed to parse error code: [" << line << "]";
- }
+void Updater::ParseAndReportErrorCode(State* state) {
+ CHECK(state);
+ if (state->errmsg.empty()) {
+ LOG(ERROR) << "script aborted (no error message)";
+ fprintf(cmd_pipe_.get(), "ui_print script aborted (no error message)\n");
+ } else {
+ LOG(ERROR) << "script aborted: " << state->errmsg;
+ const std::vector<std::string> lines = android::base::Split(state->errmsg, "\n");
+ for (const std::string& line : lines) {
+ // Parse the error code in abort message.
+ // Example: "E30: This package is for bullhead devices."
+ if (!line.empty() && line[0] == 'E') {
+ if (sscanf(line.c_str(), "E%d: ", &state->error_code) != 1) {
+ LOG(ERROR) << "Failed to parse error code: [" << line << "]";
}
- fprintf(cmd_pipe, "ui_print %s\n", line.c_str());
}
+ fprintf(cmd_pipe_.get(), "ui_print %s\n", line.c_str());
}
+ }
- // Installation has been aborted. Set the error code to kScriptExecutionFailure unless
- // a more specific code has been set in errmsg.
- if (state.error_code == kNoError) {
- state.error_code = kScriptExecutionFailure;
- }
- fprintf(cmd_pipe, "log error: %d\n", state.error_code);
- // Cause code should provide additional information about the abort.
- if (state.cause_code != kNoCause) {
- fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
- if (state.cause_code == kPatchApplicationFailure) {
- LOG(INFO) << "Patch application failed, retry update.";
- fprintf(cmd_pipe, "retry_update\n");
- }
+ // Installation has been aborted. Set the error code to kScriptExecutionFailure unless
+ // a more specific code has been set in errmsg.
+ if (state->error_code == kNoError) {
+ state->error_code = kScriptExecutionFailure;
+ }
+ fprintf(cmd_pipe_.get(), "log error: %d\n", state->error_code);
+ // Cause code should provide additional information about the abort.
+ if (state->cause_code != kNoCause) {
+ fprintf(cmd_pipe_.get(), "log cause: %d\n", state->cause_code);
+ if (state->cause_code == kPatchApplicationFailure) {
+ LOG(INFO) << "Patch application failed, retry update.";
+ fprintf(cmd_pipe_.get(), "retry_update\n");
+ } else if (state->cause_code == kEioFailure) {
+ LOG(INFO) << "Update failed due to EIO, retry update.";
+ fprintf(cmd_pipe_.get(), "retry_update\n");
}
+ }
+}
- if (updater_info.package_zip) {
- CloseArchive(updater_info.package_zip);
- }
- return 7;
- } else {
- fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result.c_str());
+bool Updater::ReadEntryToString(ZipArchiveHandle za, const std::string& entry_name,
+ std::string* content) {
+ ZipEntry entry;
+ int find_err = FindEntry(za, entry_name, &entry);
+ if (find_err != 0) {
+ LOG(ERROR) << "failed to find " << entry_name
+ << " in the package: " << ErrorCodeString(find_err);
+ return false;
}
- if (updater_info.package_zip) {
- CloseArchive(updater_info.package_zip);
+ content->resize(entry.uncompressed_length);
+ int extract_err = ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&content->at(0)),
+ entry.uncompressed_length);
+ if (extract_err != 0) {
+ LOG(ERROR) << "failed to read script from package: " << ErrorCodeString(extract_err);
+ return false;
}
- return 0;
+ return true;
}