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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>
Dees_Troy512376c2013-09-03 19:39:41 +000022#include <fcntl.h>
Elliott Hughescd3c55a2015-01-29 20:50:08 -080023#include <string.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070024
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070025#include <string>
26
Tao Bao039f2da2016-11-22 16:29:50 -080027#include <android-base/logging.h>
Tao Bao59dcb9c2016-10-03 18:06:46 -070028#include <android-base/strings.h>
Jeff Vander Stoepe35926e2017-06-14 15:30:39 -070029#include <selinux/android.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070030#include <selinux/label.h>
31#include <selinux/selinux.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070032#include <ziparchive/zip_archive.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070033
Jed Estepff6df892015-12-15 16:04:53 -080034#include "config.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070035#include "edify/expr.h"
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070036#include "otautil/DirUtil.h"
37#include "otautil/SysUtil.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070038#include "updater/blockimg.h"
39#include "updater/install.h"
Doug Zongker9931f7f2009-06-10 14:11:53 -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
Dees_Troy512376c2013-09-03 19:39:41 +000050#define SELINUX_CONTEXTS_ZIP "file_contexts"
51#define SELINUX_CONTEXTS_TMP "/tmp/file_contexts"
Doug Zongker9931f7f2009-06-10 14:11:53 -070052
Tianjie Xufa12b972016-02-05 18:25:58 -080053extern bool have_eio_error;
54
Stephen Smalley779701d2012-02-09 14:13:23 -050055struct selabel_handle *sehandle;
56
Tao Bao039f2da2016-11-22 16:29:50 -080057static void UpdaterLogger(android::base::LogId /* id */, android::base::LogSeverity /* severity */,
58 const char* /* tag */, const char* /* file */, unsigned int /* line */,
59 const char* message) {
60 fprintf(stdout, "%s\n", message);
61}
62
Doug Zongker9931f7f2009-06-10 14:11:53 -070063int main(int argc, char** argv) {
Tao Bao039f2da2016-11-22 16:29:50 -080064 // Various things log information to stdout or stderr more or less
65 // at random (though we've tried to standardize on stdout). The
66 // log file makes more sense if buffering is turned off so things
67 // appear in the right order.
68 setbuf(stdout, nullptr);
69 setbuf(stderr, nullptr);
Doug Zongker512536a2010-02-17 16:11:44 -080070
Tao Bao039f2da2016-11-22 16:29:50 -080071 // We don't have logcat yet under recovery. Update logs will always be written to stdout
72 // (which is redirected to recovery.log).
73 android::base::InitLogging(argv, &UpdaterLogger);
Doug Zongker9931f7f2009-06-10 14:11:53 -070074
Tao Bao039f2da2016-11-22 16:29:50 -080075 if (argc != 4 && argc != 5) {
76 LOG(ERROR) << "unexpected number of arguments: " << argc;
77 return 1;
78 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070079
Tao Bao039f2da2016-11-22 16:29:50 -080080 char* version = argv[1];
81 if ((version[0] != '1' && version[0] != '2' && version[0] != '3') || version[1] != '\0') {
82 // We support version 1, 2, or 3.
83 LOG(ERROR) << "wrong updater binary API; expected 1, 2, or 3; got " << argv[1];
84 return 2;
85 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070086
Tao Bao039f2da2016-11-22 16:29:50 -080087 // Set up the pipe for sending commands back to the parent process.
Doug Zongker9931f7f2009-06-10 14:11:53 -070088
Tao Bao039f2da2016-11-22 16:29:50 -080089 int fd = atoi(argv[2]);
90 FILE* cmd_pipe = fdopen(fd, "wb");
91 setlinebuf(cmd_pipe);
Doug Zongker9931f7f2009-06-10 14:11:53 -070092
Tao Bao039f2da2016-11-22 16:29:50 -080093 // Extract the script from the package.
Doug Zongker9931f7f2009-06-10 14:11:53 -070094
Tao Bao039f2da2016-11-22 16:29:50 -080095 const char* package_filename = argv[3];
96 MemMapping map;
97 if (sysMapFile(package_filename, &map) != 0) {
98 LOG(ERROR) << "failed to map package " << argv[3];
99 return 3;
100 }
101 ZipArchiveHandle za;
102 int open_err = OpenArchiveFromMemory(map.addr, map.length, argv[3], &za);
103 if (open_err != 0) {
104 LOG(ERROR) << "failed to open package " << argv[3] << ": " << ErrorCodeString(open_err);
105 CloseArchive(za);
106 return 3;
107 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700108
Tao Bao039f2da2016-11-22 16:29:50 -0800109 ZipString script_name(SCRIPT_NAME);
110 ZipEntry script_entry;
111 int find_err = FindEntry(za, script_name, &script_entry);
112 if (find_err != 0) {
113 LOG(ERROR) << "failed to find " << SCRIPT_NAME << " in " << package_filename << ": "
114 << ErrorCodeString(find_err);
115 CloseArchive(za);
116 return 4;
117 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700118
Tao Bao039f2da2016-11-22 16:29:50 -0800119 std::string script;
120 script.resize(script_entry.uncompressed_length);
121 int extract_err = ExtractToMemory(za, &script_entry, reinterpret_cast<uint8_t*>(&script[0]),
122 script_entry.uncompressed_length);
123 if (extract_err != 0) {
124 LOG(ERROR) << "failed to read script from package: " << ErrorCodeString(extract_err);
125 CloseArchive(za);
126 return 5;
127 }
Dees_Troy512376c2013-09-03 19:39:41 +0000128
Tao Bao039f2da2016-11-22 16:29:50 -0800129 // Configure edify's functions.
Dees_Troy512376c2013-09-03 19:39:41 +0000130
Tao Bao039f2da2016-11-22 16:29:50 -0800131 RegisterBuiltins();
132 RegisterInstallFunctions();
133 RegisterBlockImageFunctions();
134 RegisterDeviceExtensions();
Dees_Troy512376c2013-09-03 19:39:41 +0000135
Tao Bao039f2da2016-11-22 16:29:50 -0800136 // Parse the script.
Doug Zongker9931f7f2009-06-10 14:11:53 -0700137
Tianjie Xuc4447322017-03-06 14:44:59 -0800138 std::unique_ptr<Expr> root;
Tao Bao039f2da2016-11-22 16:29:50 -0800139 int error_count = 0;
140 int error = parse_string(script.c_str(), &root, &error_count);
141 if (error != 0 || error_count > 0) {
142 LOG(ERROR) << error_count << " parse errors";
143 CloseArchive(za);
144 return 6;
145 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700146
Jeff Vander Stoepe35926e2017-06-14 15:30:39 -0700147 sehandle = selinux_android_file_context_handle();
148 selinux_android_set_sehandle(sehandle);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700149
Tao Bao039f2da2016-11-22 16:29:50 -0800150 if (!sehandle) {
151 fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
152 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700153
Tao Bao039f2da2016-11-22 16:29:50 -0800154 // Evaluate the parsed script.
Stephen Smalley779701d2012-02-09 14:13:23 -0500155
Tao Bao039f2da2016-11-22 16:29:50 -0800156 UpdaterInfo updater_info;
157 updater_info.cmd_pipe = cmd_pipe;
158 updater_info.package_zip = za;
159 updater_info.version = atoi(version);
160 updater_info.package_zip_addr = map.addr;
161 updater_info.package_zip_len = map.length;
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700162
Tao Bao039f2da2016-11-22 16:29:50 -0800163 State state(script, &updater_info);
Tianjie Xu7ce287d2016-05-31 09:29:49 -0700164
Tao Bao039f2da2016-11-22 16:29:50 -0800165 if (argc == 5) {
166 if (strcmp(argv[4], "retry") == 0) {
167 state.is_retry = true;
Dees_Troy512376c2013-09-03 19:39:41 +0000168 } else {
Tao Bao039f2da2016-11-22 16:29:50 -0800169 printf("unexpected argument: %s", argv[4]);
Dees_Troy512376c2013-09-03 19:39:41 +0000170 }
Tao Bao039f2da2016-11-22 16:29:50 -0800171 }
Tianjie Xu47282422017-01-09 13:45:37 -0800172 ota_io_init(za, state.is_retry);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700173
Ethan Yonker8373cfe2017-09-08 06:50:54 -0500174 if (access(SELINUX_CONTEXTS_TMP, R_OK) == 0) {
175 struct selinux_opt seopts[] = {
176 { SELABEL_OPT_PATH, SELINUX_CONTEXTS_TMP }
177 };
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700178
Ethan Yonker8373cfe2017-09-08 06:50:54 -0500179 sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
180 } else {
181 struct selinux_opt seopts[] = {
182 { SELABEL_OPT_PATH, "/file_contexts" }
183 };
Doug Zongker9931f7f2009-06-10 14:11:53 -0700184
Ethan Yonker8373cfe2017-09-08 06:50:54 -0500185 sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
186 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700187
Tao Bao039f2da2016-11-22 16:29:50 -0800188 std::string result;
189 bool status = Evaluate(&state, root, &result);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700190
Tao Bao039f2da2016-11-22 16:29:50 -0800191 if (have_eio_error) {
192 fprintf(cmd_pipe, "retry_update\n");
193 }
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700194
Tao Bao039f2da2016-11-22 16:29:50 -0800195 if (!status) {
196 if (state.errmsg.empty()) {
197 LOG(ERROR) << "script aborted (no error message)";
198 fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700199 } else {
Tao Bao039f2da2016-11-22 16:29:50 -0800200 LOG(ERROR) << "script aborted: " << state.errmsg;
201 const std::vector<std::string> lines = android::base::Split(state.errmsg, "\n");
202 for (const std::string& line : lines) {
203 // Parse the error code in abort message.
204 // Example: "E30: This package is for bullhead devices."
205 if (!line.empty() && line[0] == 'E') {
Mikhail Lappo17e6d3f2017-03-23 16:56:50 +0100206 if (sscanf(line.c_str(), "E%d: ", &state.error_code) != 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800207 LOG(ERROR) << "Failed to parse error code: [" << line << "]";
208 }
209 }
210 fprintf(cmd_pipe, "ui_print %s\n", line.c_str());
211 }
Tao Bao039f2da2016-11-22 16:29:50 -0800212 }
213
214 if (state.error_code != kNoError) {
215 fprintf(cmd_pipe, "log error: %d\n", state.error_code);
216 // Cause code should provide additional information about the abort;
217 // report only when an error exists.
218 if (state.cause_code != kNoCause) {
219 fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
220 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700221 }
222
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700223 if (updater_info.package_zip) {
Tao Bao039f2da2016-11-22 16:29:50 -0800224 CloseArchive(updater_info.package_zip);
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700225 }
Tao Bao039f2da2016-11-22 16:29:50 -0800226 return 7;
227 } else {
228 fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result.c_str());
229 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700230
Tao Bao039f2da2016-11-22 16:29:50 -0800231 if (updater_info.package_zip) {
232 CloseArchive(updater_info.package_zip);
233 }
234 sysReleaseMap(&map);
235
236 return 0;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700237}