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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 Bao876b9392016-10-03 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
Yabin Cuia029c9a2016-02-18 11:32:10 -080024#include <string>
25
Tao Bao876b9392016-10-03 18:06:46 -070026#include <android-base/strings.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070027#include <selinux/label.h>
28#include <selinux/selinux.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070029#include <ziparchive/zip_archive.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070030
Tao Bao876b9392016-10-03 18:06:46 -070031#include "config.h"
32#include "edify/expr.h"
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070033#include "otautil/DirUtil.h"
34#include "otautil/SysUtil.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070035#include "updater/blockimg.h"
36#include "updater/install.h"
Tao Bao876b9392016-10-03 18:06:46 -070037
Doug Zongker2b0fdc62009-06-19 11:22:06 -070038// Generated by the makefile, this function defines the
39// RegisterDeviceExtensions() function, which calls all the
40// registration functions for device-specific extensions.
41#include "register.inc"
42
Doug Zongker9931f7f2009-06-10 14:11:53 -070043// Where in the package we expect to find the edify script to execute.
44// (Note it's "updateR-script", not the older "update-script".)
45#define SCRIPT_NAME "META-INF/com/google/android/updater-script"
46
Tianjie Xu3c62b672016-02-05 18:25:58 -080047extern bool have_eio_error;
48
Stephen Smalley779701d2012-02-09 14:13:23 -050049struct selabel_handle *sehandle;
50
Doug Zongker9931f7f2009-06-10 14:11:53 -070051int main(int argc, char** argv) {
Doug Zongker512536a2010-02-17 16:11:44 -080052 // Various things log information to stdout or stderr more or less
Doug Zongkerfafc85b2013-07-09 12:29:45 -070053 // at random (though we've tried to standardize on stdout). The
54 // log file makes more sense if buffering is turned off so things
55 // appear in the right order.
Doug Zongker512536a2010-02-17 16:11:44 -080056 setbuf(stdout, NULL);
57 setbuf(stderr, NULL);
58
Tianjie Xu7ce287d2016-05-31 09:29:49 -070059 if (argc != 4 && argc != 5) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070060 printf("unexpected number of arguments (%d)\n", argc);
Doug Zongker9931f7f2009-06-10 14:11:53 -070061 return 1;
62 }
63
64 char* version = argv[1];
Doug Zongkere08991e2010-02-02 13:09:52 -080065 if ((version[0] != '1' && version[0] != '2' && version[0] != '3') ||
66 version[1] != '\0') {
67 // We support version 1, 2, or 3.
Doug Zongkerfafc85b2013-07-09 12:29:45 -070068 printf("wrong updater binary API; expected 1, 2, or 3; "
Doug Zongkere08991e2010-02-02 13:09:52 -080069 "got %s\n",
Doug Zongkerfb2e3af2009-06-17 17:29:40 -070070 argv[1]);
Doug Zongker9931f7f2009-06-10 14:11:53 -070071 return 2;
72 }
73
74 // Set up the pipe for sending commands back to the parent process.
75
76 int fd = atoi(argv[2]);
77 FILE* cmd_pipe = fdopen(fd, "wb");
78 setlinebuf(cmd_pipe);
79
80 // Extract the script from the package.
81
Doug Zongker99916f02014-01-13 14:16:58 -080082 const char* package_filename = argv[3];
83 MemMapping map;
84 if (sysMapFile(package_filename, &map) != 0) {
85 printf("failed to map package %s\n", argv[3]);
86 return 3;
87 }
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070088 ZipArchiveHandle za;
89 int open_err = OpenArchiveFromMemory(map.addr, map.length, argv[3], &za);
90 if (open_err != 0) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070091 printf("failed to open package %s: %s\n",
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070092 argv[3], ErrorCodeString(open_err));
93 CloseArchive(za);
Doug Zongker9931f7f2009-06-10 14:11:53 -070094 return 3;
95 }
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070096 ota_io_init(za);
Doug Zongker9931f7f2009-06-10 14:11:53 -070097
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070098 ZipString script_name(SCRIPT_NAME);
99 ZipEntry script_entry;
100 int find_err = FindEntry(za, script_name, &script_entry);
101 if (find_err != 0) {
102 printf("failed to find %s in %s: %s\n", SCRIPT_NAME, package_filename,
103 ErrorCodeString(find_err));
104 CloseArchive(za);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700105 return 4;
106 }
107
Tao Baod0de0702016-11-29 11:54:04 -0800108 std::string script;
109 script.resize(script_entry.uncompressed_length);
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700110 int extract_err = ExtractToMemory(za, &script_entry, reinterpret_cast<uint8_t*>(&script[0]),
111 script_entry.uncompressed_length);
112 if (extract_err != 0) {
113 printf("failed to read script from package: %s\n", ErrorCodeString(extract_err));
114 CloseArchive(za);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700115 return 5;
116 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700117
118 // Configure edify's functions.
119
120 RegisterBuiltins();
121 RegisterInstallFunctions();
Doug Zongkerbc7ffed2014-08-15 14:31:52 -0700122 RegisterBlockImageFunctions();
Doug Zongker2b0fdc62009-06-19 11:22:06 -0700123 RegisterDeviceExtensions();
Doug Zongker9931f7f2009-06-10 14:11:53 -0700124
125 // Parse the script.
126
127 Expr* root;
Doug Zongker8edb00c2009-06-11 17:21:44 -0700128 int error_count = 0;
Yabin Cuia029c9a2016-02-18 11:32:10 -0800129 int error = parse_string(script.c_str(), &root, &error_count);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700130 if (error != 0 || error_count > 0) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700131 printf("%d parse errors\n", error_count);
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700132 CloseArchive(za);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700133 return 6;
134 }
135
Stephen Smalley779701d2012-02-09 14:13:23 -0500136 struct selinux_opt seopts[] = {
137 { SELABEL_OPT_PATH, "/file_contexts" }
138 };
139
140 sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
141
142 if (!sehandle) {
Stephen Smalley779701d2012-02-09 14:13:23 -0500143 fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
144 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500145
Doug Zongker9931f7f2009-06-10 14:11:53 -0700146 // Evaluate the parsed script.
147
148 UpdaterInfo updater_info;
149 updater_info.cmd_pipe = cmd_pipe;
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700150 updater_info.package_zip = za;
Doug Zongkere08991e2010-02-02 13:09:52 -0800151 updater_info.version = atoi(version);
Doug Zongkerbc7ffed2014-08-15 14:31:52 -0700152 updater_info.package_zip_addr = map.addr;
153 updater_info.package_zip_len = map.length;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700154
Tao Bao876b9392016-10-03 18:06:46 -0700155 State state(script, &updater_info);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700156
Tianjie Xu7ce287d2016-05-31 09:29:49 -0700157 if (argc == 5) {
158 if (strcmp(argv[4], "retry") == 0) {
159 state.is_retry = true;
160 } else {
161 printf("unexpected argument: %s", argv[4]);
162 }
163 }
164
Tianjie Xuaced5d92016-10-12 10:55:04 -0700165 std::string result;
166 bool status = Evaluate(&state, root, &result);
Tianjie Xu3c62b672016-02-05 18:25:58 -0800167
168 if (have_eio_error) {
169 fprintf(cmd_pipe, "retry_update\n");
170 }
171
Tianjie Xuaced5d92016-10-12 10:55:04 -0700172 if (!status) {
Tao Bao876b9392016-10-03 18:06:46 -0700173 if (state.errmsg.empty()) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700174 printf("script aborted (no error message)\n");
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700175 fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
176 } else {
Tao Bao876b9392016-10-03 18:06:46 -0700177 printf("script aborted: %s\n", state.errmsg.c_str());
178 const std::vector<std::string> lines = android::base::Split(state.errmsg, "\n");
179 for (const std::string& line : lines) {
Tianjie Xu16255832016-04-30 11:49:59 -0700180 // Parse the error code in abort message.
181 // Example: "E30: This package is for bullhead devices."
Tao Bao876b9392016-10-03 18:06:46 -0700182 if (!line.empty() && line[0] == 'E') {
183 if (sscanf(line.c_str(), "E%u: ", &state.error_code) != 1) {
184 printf("Failed to parse error code: [%s]\n", line.c_str());
Tianjie Xu16255832016-04-30 11:49:59 -0700185 }
186 }
Tao Bao876b9392016-10-03 18:06:46 -0700187 fprintf(cmd_pipe, "ui_print %s\n", line.c_str());
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700188 }
189 fprintf(cmd_pipe, "ui_print\n");
190 }
Tianjie Xu16255832016-04-30 11:49:59 -0700191
192 if (state.error_code != kNoError) {
193 fprintf(cmd_pipe, "log error: %d\n", state.error_code);
194 // Cause code should provide additional information about the abort;
195 // report only when an error exists.
196 if (state.cause_code != kNoCause) {
197 fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
198 }
199 }
200
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700201 if (updater_info.package_zip) {
202 CloseArchive(updater_info.package_zip);
203 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700204 return 7;
205 } else {
Tianjie Xuaced5d92016-10-12 10:55:04 -0700206 fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result.c_str());
Doug Zongker9931f7f2009-06-10 14:11:53 -0700207 }
208
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700209 if (updater_info.package_zip) {
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700210 CloseArchive(updater_info.package_zip);
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700211 }
Doug Zongker99916f02014-01-13 14:16:58 -0800212 sysReleaseMap(&map);
Tao Baod0de0702016-11-29 11:54:04 -0800213
Doug Zongker9931f7f2009-06-10 14:11:53 -0700214 return 0;
215}