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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>
Doug Zongker9931f7f2009-06-10 14:11:53 -070020#include <stdlib.h>
Elliott Hughescd3c55a2015-01-29 20:50:08 -080021#include <string.h>
Tao Bao641fa972018-04-25 18:59:40 -070022#include <unistd.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 Stoepe35926e2017-06-14 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 "edify/expr.h"
Tao Baod33b2f82017-09-28 21:29:11 -070034#include "otafault/config.h"
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070035#include "otautil/DirUtil.h"
36#include "otautil/SysUtil.h"
Tao Bao1fc5bf32017-10-06 07:43:41 -070037#include "otautil/error_code.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070038#include "updater/blockimg.h"
39#include "updater/install.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070040
Doug Zongker2b0fdc62009-06-19 11:22:06 -070041// Generated by the makefile, this function defines the
42// RegisterDeviceExtensions() function, which calls all the
43// registration functions for device-specific extensions.
44#include "register.inc"
45
Doug Zongker9931f7f2009-06-10 14:11:53 -070046// Where in the package we expect to find the edify script to execute.
47// (Note it's "updateR-script", not the older "update-script".)
Tao Bao039f2da2016-11-22 16:29:50 -080048static constexpr const char* SCRIPT_NAME = "META-INF/com/google/android/updater-script";
Doug Zongker9931f7f2009-06-10 14:11:53 -070049
Tianjie Xu3c62b672016-02-05 18:25:58 -080050extern bool have_eio_error;
51
Stephen Smalley779701d2012-02-09 14:13:23 -050052struct selabel_handle *sehandle;
53
Tao Bao039f2da2016-11-22 16:29:50 -080054static void UpdaterLogger(android::base::LogId /* id */, android::base::LogSeverity /* severity */,
55 const char* /* tag */, const char* /* file */, unsigned int /* line */,
56 const char* message) {
57 fprintf(stdout, "%s\n", message);
58}
59
Doug Zongker9931f7f2009-06-10 14:11:53 -070060int main(int argc, char** argv) {
Tao Bao039f2da2016-11-22 16:29:50 -080061 // Various things log information to stdout or stderr more or less
62 // at random (though we've tried to standardize on stdout). The
63 // log file makes more sense if buffering is turned off so things
64 // appear in the right order.
65 setbuf(stdout, nullptr);
66 setbuf(stderr, nullptr);
Doug Zongker512536a2010-02-17 16:11:44 -080067
Tao Bao039f2da2016-11-22 16:29:50 -080068 // We don't have logcat yet under recovery. Update logs will always be written to stdout
69 // (which is redirected to recovery.log).
70 android::base::InitLogging(argv, &UpdaterLogger);
Doug Zongker9931f7f2009-06-10 14:11:53 -070071
Tao Bao039f2da2016-11-22 16:29:50 -080072 if (argc != 4 && argc != 5) {
73 LOG(ERROR) << "unexpected number of arguments: " << argc;
74 return 1;
75 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070076
Tao Bao039f2da2016-11-22 16:29:50 -080077 char* version = argv[1];
78 if ((version[0] != '1' && version[0] != '2' && version[0] != '3') || version[1] != '\0') {
79 // We support version 1, 2, or 3.
80 LOG(ERROR) << "wrong updater binary API; expected 1, 2, or 3; got " << argv[1];
81 return 2;
82 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070083
Tao Bao039f2da2016-11-22 16:29:50 -080084 // Set up the pipe for sending commands back to the parent process.
Doug Zongker9931f7f2009-06-10 14:11:53 -070085
Tao Bao039f2da2016-11-22 16:29:50 -080086 int fd = atoi(argv[2]);
87 FILE* cmd_pipe = fdopen(fd, "wb");
88 setlinebuf(cmd_pipe);
Doug Zongker9931f7f2009-06-10 14:11:53 -070089
Tao Bao039f2da2016-11-22 16:29:50 -080090 // Extract the script from the package.
Doug Zongker9931f7f2009-06-10 14:11:53 -070091
Tao Bao039f2da2016-11-22 16:29:50 -080092 const char* package_filename = argv[3];
93 MemMapping map;
Tao Baob656a152017-04-18 23:54:29 -070094 if (!map.MapFile(package_filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -080095 LOG(ERROR) << "failed to map package " << argv[3];
96 return 3;
97 }
98 ZipArchiveHandle za;
99 int open_err = OpenArchiveFromMemory(map.addr, map.length, argv[3], &za);
100 if (open_err != 0) {
101 LOG(ERROR) << "failed to open package " << argv[3] << ": " << ErrorCodeString(open_err);
102 CloseArchive(za);
103 return 3;
104 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700105
Tao Bao039f2da2016-11-22 16:29:50 -0800106 ZipString script_name(SCRIPT_NAME);
107 ZipEntry script_entry;
108 int find_err = FindEntry(za, script_name, &script_entry);
109 if (find_err != 0) {
110 LOG(ERROR) << "failed to find " << SCRIPT_NAME << " in " << package_filename << ": "
111 << ErrorCodeString(find_err);
112 CloseArchive(za);
113 return 4;
114 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700115
Tao Bao039f2da2016-11-22 16:29:50 -0800116 std::string script;
117 script.resize(script_entry.uncompressed_length);
118 int extract_err = ExtractToMemory(za, &script_entry, reinterpret_cast<uint8_t*>(&script[0]),
119 script_entry.uncompressed_length);
120 if (extract_err != 0) {
121 LOG(ERROR) << "failed to read script from package: " << ErrorCodeString(extract_err);
122 CloseArchive(za);
123 return 5;
124 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700125
Tao Bao039f2da2016-11-22 16:29:50 -0800126 // Configure edify's functions.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700127
Tao Bao039f2da2016-11-22 16:29:50 -0800128 RegisterBuiltins();
129 RegisterInstallFunctions();
130 RegisterBlockImageFunctions();
131 RegisterDeviceExtensions();
Doug Zongker9931f7f2009-06-10 14:11:53 -0700132
Tao Bao039f2da2016-11-22 16:29:50 -0800133 // Parse the script.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700134
Tianjie Xuc4447322017-03-06 14:44:59 -0800135 std::unique_ptr<Expr> root;
Tao Bao039f2da2016-11-22 16:29:50 -0800136 int error_count = 0;
137 int error = parse_string(script.c_str(), &root, &error_count);
138 if (error != 0 || error_count > 0) {
139 LOG(ERROR) << error_count << " parse errors";
140 CloseArchive(za);
141 return 6;
142 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500143
Jeff Vander Stoepe35926e2017-06-14 15:30:39 -0700144 sehandle = selinux_android_file_context_handle();
145 selinux_android_set_sehandle(sehandle);
Stephen Smalley779701d2012-02-09 14:13:23 -0500146
Tao Bao039f2da2016-11-22 16:29:50 -0800147 if (!sehandle) {
148 fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
149 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700150
Tao Bao039f2da2016-11-22 16:29:50 -0800151 // Evaluate the parsed script.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700152
Tao Bao039f2da2016-11-22 16:29:50 -0800153 UpdaterInfo updater_info;
154 updater_info.cmd_pipe = cmd_pipe;
155 updater_info.package_zip = za;
156 updater_info.version = atoi(version);
157 updater_info.package_zip_addr = map.addr;
158 updater_info.package_zip_len = map.length;
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700159
Tao Bao039f2da2016-11-22 16:29:50 -0800160 State state(script, &updater_info);
Tianjie Xu7ce287d2016-05-31 09:29:49 -0700161
Tao Bao039f2da2016-11-22 16:29:50 -0800162 if (argc == 5) {
163 if (strcmp(argv[4], "retry") == 0) {
164 state.is_retry = true;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700165 } else {
Tao Bao039f2da2016-11-22 16:29:50 -0800166 printf("unexpected argument: %s", argv[4]);
167 }
168 }
Tianjie Xu47282422017-01-09 13:45:37 -0800169 ota_io_init(za, state.is_retry);
Tao Bao039f2da2016-11-22 16:29:50 -0800170
171 std::string result;
172 bool status = Evaluate(&state, root, &result);
173
174 if (have_eio_error) {
175 fprintf(cmd_pipe, "retry_update\n");
176 }
177
178 if (!status) {
179 if (state.errmsg.empty()) {
180 LOG(ERROR) << "script aborted (no error message)";
181 fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
182 } else {
183 LOG(ERROR) << "script aborted: " << state.errmsg;
184 const std::vector<std::string> lines = android::base::Split(state.errmsg, "\n");
185 for (const std::string& line : lines) {
186 // Parse the error code in abort message.
187 // Example: "E30: This package is for bullhead devices."
188 if (!line.empty() && line[0] == 'E') {
Mikhail Lappo17e6d3f2017-03-23 16:56:50 +0100189 if (sscanf(line.c_str(), "E%d: ", &state.error_code) != 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800190 LOG(ERROR) << "Failed to parse error code: [" << line << "]";
191 }
192 }
193 fprintf(cmd_pipe, "ui_print %s\n", line.c_str());
194 }
Tao Bao039f2da2016-11-22 16:29:50 -0800195 }
196
Tianjie Xue0c88792017-05-02 16:07:18 -0700197 // Installation has been aborted. Set the error code to kScriptExecutionFailure unless
198 // a more specific code has been set in errmsg.
199 if (state.error_code == kNoError) {
200 state.error_code = kScriptExecutionFailure;
201 }
202 fprintf(cmd_pipe, "log error: %d\n", state.error_code);
203 // Cause code should provide additional information about the abort.
204 if (state.cause_code != kNoCause) {
205 fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
Tianjie Xu69575552017-05-16 15:51:46 -0700206 if (state.cause_code == kPatchApplicationFailure) {
207 LOG(INFO) << "Patch application failed, retry update.";
208 fprintf(cmd_pipe, "retry_update\n");
209 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700210 }
211
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700212 if (updater_info.package_zip) {
Tao Bao039f2da2016-11-22 16:29:50 -0800213 CloseArchive(updater_info.package_zip);
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700214 }
Tao Bao039f2da2016-11-22 16:29:50 -0800215 return 7;
216 } else {
217 fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result.c_str());
218 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700219
Tao Bao039f2da2016-11-22 16:29:50 -0800220 if (updater_info.package_zip) {
221 CloseArchive(updater_info.package_zip);
222 }
Tao Bao039f2da2016-11-22 16:29:50 -0800223
224 return 0;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700225}