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Doug Zongker9931f7f2009-06-10 14:11:53 -07001/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Tao Bao0c7839a2016-10-10 15:48:37 -070017#include "updater/updater.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070018
Doug Zongker9931f7f2009-06-10 14:11:53 -070019#include <stdio.h>
20#include <unistd.h>
21#include <stdlib.h>
Elliott Hughescd3c55a2015-01-29 20:50:08 -080022#include <string.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070023
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070024#include <string>
25
Tao Bao039f2da2016-11-22 16:29:50 -080026#include <android-base/logging.h>
Tao Bao59dcb9c2016-10-03 18:06:46 -070027#include <android-base/strings.h>
Jeff Vander Stoep2330dd82017-06-14 15:30:39 -070028#include <selinux/android.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070029#include <selinux/label.h>
30#include <selinux/selinux.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070031#include <ziparchive/zip_archive.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070032
Tao Bao59dcb9c2016-10-03 18:06:46 -070033#include "config.h"
34#include "edify/expr.h"
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070035#include "otautil/DirUtil.h"
36#include "otautil/SysUtil.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070037#include "updater/blockimg.h"
38#include "updater/install.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070039
Doug Zongker2b0fdc62009-06-19 11:22:06 -070040// Generated by the makefile, this function defines the
41// RegisterDeviceExtensions() function, which calls all the
42// registration functions for device-specific extensions.
43#include "register.inc"
44
Doug Zongker9931f7f2009-06-10 14:11:53 -070045// Where in the package we expect to find the edify script to execute.
46// (Note it's "updateR-script", not the older "update-script".)
Tao Bao039f2da2016-11-22 16:29:50 -080047static constexpr const char* SCRIPT_NAME = "META-INF/com/google/android/updater-script";
Doug Zongker9931f7f2009-06-10 14:11:53 -070048
Tianjie Xu3c62b672016-02-05 18:25:58 -080049extern bool have_eio_error;
50
Stephen Smalley779701d2012-02-09 14:13:23 -050051struct selabel_handle *sehandle;
52
Tao Bao039f2da2016-11-22 16:29:50 -080053static void UpdaterLogger(android::base::LogId /* id */, android::base::LogSeverity /* severity */,
54 const char* /* tag */, const char* /* file */, unsigned int /* line */,
55 const char* message) {
56 fprintf(stdout, "%s\n", message);
57}
58
Doug Zongker9931f7f2009-06-10 14:11:53 -070059int main(int argc, char** argv) {
Tao Bao039f2da2016-11-22 16:29:50 -080060 // Various things log information to stdout or stderr more or less
61 // at random (though we've tried to standardize on stdout). The
62 // log file makes more sense if buffering is turned off so things
63 // appear in the right order.
64 setbuf(stdout, nullptr);
65 setbuf(stderr, nullptr);
Doug Zongker512536a2010-02-17 16:11:44 -080066
Tao Bao039f2da2016-11-22 16:29:50 -080067 // We don't have logcat yet under recovery. Update logs will always be written to stdout
68 // (which is redirected to recovery.log).
69 android::base::InitLogging(argv, &UpdaterLogger);
Doug Zongker9931f7f2009-06-10 14:11:53 -070070
Tao Bao039f2da2016-11-22 16:29:50 -080071 if (argc != 4 && argc != 5) {
72 LOG(ERROR) << "unexpected number of arguments: " << argc;
73 return 1;
74 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070075
Tao Bao039f2da2016-11-22 16:29:50 -080076 char* version = argv[1];
77 if ((version[0] != '1' && version[0] != '2' && version[0] != '3') || version[1] != '\0') {
78 // We support version 1, 2, or 3.
79 LOG(ERROR) << "wrong updater binary API; expected 1, 2, or 3; got " << argv[1];
80 return 2;
81 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070082
Tao Bao039f2da2016-11-22 16:29:50 -080083 // Set up the pipe for sending commands back to the parent process.
Doug Zongker9931f7f2009-06-10 14:11:53 -070084
Tao Bao039f2da2016-11-22 16:29:50 -080085 int fd = atoi(argv[2]);
86 FILE* cmd_pipe = fdopen(fd, "wb");
87 setlinebuf(cmd_pipe);
Doug Zongker9931f7f2009-06-10 14:11:53 -070088
Tao Bao039f2da2016-11-22 16:29:50 -080089 // Extract the script from the package.
Doug Zongker9931f7f2009-06-10 14:11:53 -070090
Tao Bao039f2da2016-11-22 16:29:50 -080091 const char* package_filename = argv[3];
92 MemMapping map;
Tao Baob656a152017-04-18 23:54:29 -070093 if (!map.MapFile(package_filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -080094 LOG(ERROR) << "failed to map package " << argv[3];
95 return 3;
96 }
97 ZipArchiveHandle za;
98 int open_err = OpenArchiveFromMemory(map.addr, map.length, argv[3], &za);
99 if (open_err != 0) {
100 LOG(ERROR) << "failed to open package " << argv[3] << ": " << ErrorCodeString(open_err);
101 CloseArchive(za);
102 return 3;
103 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700104
Tao Bao039f2da2016-11-22 16:29:50 -0800105 ZipString script_name(SCRIPT_NAME);
106 ZipEntry script_entry;
107 int find_err = FindEntry(za, script_name, &script_entry);
108 if (find_err != 0) {
109 LOG(ERROR) << "failed to find " << SCRIPT_NAME << " in " << package_filename << ": "
110 << ErrorCodeString(find_err);
111 CloseArchive(za);
112 return 4;
113 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700114
Tao Bao039f2da2016-11-22 16:29:50 -0800115 std::string script;
116 script.resize(script_entry.uncompressed_length);
117 int extract_err = ExtractToMemory(za, &script_entry, reinterpret_cast<uint8_t*>(&script[0]),
118 script_entry.uncompressed_length);
119 if (extract_err != 0) {
120 LOG(ERROR) << "failed to read script from package: " << ErrorCodeString(extract_err);
121 CloseArchive(za);
122 return 5;
123 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700124
Tao Bao039f2da2016-11-22 16:29:50 -0800125 // Configure edify's functions.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700126
Tao Bao039f2da2016-11-22 16:29:50 -0800127 RegisterBuiltins();
128 RegisterInstallFunctions();
129 RegisterBlockImageFunctions();
130 RegisterDeviceExtensions();
Doug Zongker9931f7f2009-06-10 14:11:53 -0700131
Tao Bao039f2da2016-11-22 16:29:50 -0800132 // Parse the script.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700133
Tianjie Xuc4447322017-03-06 14:44:59 -0800134 std::unique_ptr<Expr> root;
Tao Bao039f2da2016-11-22 16:29:50 -0800135 int error_count = 0;
136 int error = parse_string(script.c_str(), &root, &error_count);
137 if (error != 0 || error_count > 0) {
138 LOG(ERROR) << error_count << " parse errors";
139 CloseArchive(za);
140 return 6;
141 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500142
Jeff Vander Stoep2330dd82017-06-14 15:30:39 -0700143 sehandle = selinux_android_file_context_handle();
144 selinux_android_set_sehandle(sehandle);
Stephen Smalley779701d2012-02-09 14:13:23 -0500145
Tao Bao039f2da2016-11-22 16:29:50 -0800146 if (!sehandle) {
147 fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
148 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700149
Tao Bao039f2da2016-11-22 16:29:50 -0800150 // Evaluate the parsed script.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700151
Tao Bao039f2da2016-11-22 16:29:50 -0800152 UpdaterInfo updater_info;
153 updater_info.cmd_pipe = cmd_pipe;
154 updater_info.package_zip = za;
155 updater_info.version = atoi(version);
156 updater_info.package_zip_addr = map.addr;
157 updater_info.package_zip_len = map.length;
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700158
Tao Bao039f2da2016-11-22 16:29:50 -0800159 State state(script, &updater_info);
Tianjie Xu7ce287d2016-05-31 09:29:49 -0700160
Tao Bao039f2da2016-11-22 16:29:50 -0800161 if (argc == 5) {
162 if (strcmp(argv[4], "retry") == 0) {
163 state.is_retry = true;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700164 } else {
Tao Bao039f2da2016-11-22 16:29:50 -0800165 printf("unexpected argument: %s", argv[4]);
166 }
167 }
Tianjie Xu47282422017-01-09 13:45:37 -0800168 ota_io_init(za, state.is_retry);
Tao Bao039f2da2016-11-22 16:29:50 -0800169
170 std::string result;
171 bool status = Evaluate(&state, root, &result);
172
173 if (have_eio_error) {
174 fprintf(cmd_pipe, "retry_update\n");
175 }
176
177 if (!status) {
178 if (state.errmsg.empty()) {
179 LOG(ERROR) << "script aborted (no error message)";
180 fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
181 } else {
182 LOG(ERROR) << "script aborted: " << state.errmsg;
183 const std::vector<std::string> lines = android::base::Split(state.errmsg, "\n");
184 for (const std::string& line : lines) {
185 // Parse the error code in abort message.
186 // Example: "E30: This package is for bullhead devices."
187 if (!line.empty() && line[0] == 'E') {
Mikhail Lappo17e6d3f2017-03-23 16:56:50 +0100188 if (sscanf(line.c_str(), "E%d: ", &state.error_code) != 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800189 LOG(ERROR) << "Failed to parse error code: [" << line << "]";
190 }
191 }
192 fprintf(cmd_pipe, "ui_print %s\n", line.c_str());
193 }
Tao Bao039f2da2016-11-22 16:29:50 -0800194 }
195
Tianjie Xue0c88792017-05-02 16:07:18 -0700196 // Installation has been aborted. Set the error code to kScriptExecutionFailure unless
197 // a more specific code has been set in errmsg.
198 if (state.error_code == kNoError) {
199 state.error_code = kScriptExecutionFailure;
200 }
201 fprintf(cmd_pipe, "log error: %d\n", state.error_code);
202 // Cause code should provide additional information about the abort.
203 if (state.cause_code != kNoCause) {
204 fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
Tianjie Xu69575552017-05-16 15:51:46 -0700205 if (state.cause_code == kPatchApplicationFailure) {
206 LOG(INFO) << "Patch application failed, retry update.";
207 fprintf(cmd_pipe, "retry_update\n");
208 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700209 }
210
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700211 if (updater_info.package_zip) {
Tao Bao039f2da2016-11-22 16:29:50 -0800212 CloseArchive(updater_info.package_zip);
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700213 }
Tao Bao039f2da2016-11-22 16:29:50 -0800214 return 7;
215 } else {
216 fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result.c_str());
217 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700218
Tao Bao039f2da2016-11-22 16:29:50 -0800219 if (updater_info.package_zip) {
220 CloseArchive(updater_info.package_zip);
221 }
Tao Bao039f2da2016-11-22 16:29:50 -0800222
223 return 0;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700224}