blob: fc085d5aaabf29a8d784b782ac31b0228f7a5f48 [file] [log] [blame]
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/install.h"
18
Doug Zongkerfbf3c102009-06-24 09:36:20 -070019#include <ctype.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070020#include <errno.h>
Tao Bao361342c2016-02-08 11:15:50 -080021#include <fcntl.h>
22#include <ftw.h>
23#include <inttypes.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070024#include <stdarg.h>
Doug Zongkerfbf3c102009-06-24 09:36:20 -070025#include <stdio.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070026#include <stdlib.h>
27#include <string.h>
Tao Bao361342c2016-02-08 11:15:50 -080028#include <sys/capability.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070029#include <sys/mount.h>
30#include <sys/stat.h>
31#include <sys/types.h>
Doug Zongkera3f89ea2009-09-10 14:10:48 -070032#include <sys/wait.h>
Nick Kralevich5dbdef02013-09-07 14:41:06 -070033#include <sys/xattr.h>
Tao Bao361342c2016-02-08 11:15:50 -080034#include <time.h>
35#include <unistd.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070036#include <utime.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070037
Yabin Cui64be2132016-02-03 18:16:02 -080038#include <memory>
Tao Bao361342c2016-02-08 11:15:50 -080039#include <string>
Yabin Cui64be2132016-02-03 18:16:02 -080040#include <vector>
41
Tao Baod0f30882016-11-03 23:52:01 -070042#include <android-base/file.h>
Tao Bao039f2da2016-11-22 16:29:50 -080043#include <android-base/logging.h>
Tianjie Xu5fe280a2016-10-17 18:15:20 -070044#include <android-base/parsedouble.h>
Tao Baod0f30882016-11-03 23:52:01 -070045#include <android-base/parseint.h>
Elliott Hughescb220402016-09-23 15:30:55 -070046#include <android-base/properties.h>
Elliott Hughes4b166f02015-12-04 15:30:20 -080047#include <android-base/stringprintf.h>
Tao Baod0f30882016-11-03 23:52:01 -070048#include <android-base/strings.h>
Tao Bao0d3f84f2016-12-28 15:09:20 -080049#include <applypatch/applypatch.h>
50#include <bootloader_message/bootloader_message.h>
Tao Bao0c7839a2016-10-10 15:48:37 -070051#include <cutils/android_reboot.h>
Tao Baode40ba52016-10-05 23:17:01 -070052#include <ext4_utils/make_ext4fs.h>
53#include <ext4_utils/wipe.h>
Tao Bao361342c2016-02-08 11:15:50 -080054#include <openssl/sha.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070055#include <selinux/label.h>
56#include <selinux/selinux.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070057#include <ziparchive/zip_archive.h>
Tao Bao1107d962015-09-09 17:16:55 -070058
Doug Zongker9931f7f2009-06-10 14:11:53 -070059#include "edify/expr.h"
Tao Bao26436d62017-10-05 17:16:31 +000060#include "error_code.h"
Elliott Hughes63a31922016-06-09 17:41:22 -070061#include "mounts.h"
Tao Baod33b2f82017-09-28 21:29:11 -070062#include "otafault/ota_io.h"
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070063#include "otautil/DirUtil.h"
Tao Bao361342c2016-02-08 11:15:50 -080064#include "print_sha1.h"
Michael Rungeacf47db2014-11-21 00:12:28 -080065#include "tune2fs.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070066#include "updater/updater.h"
Doug Zongker8edb00c2009-06-11 17:21:44 -070067
Tao Bao1107d962015-09-09 17:16:55 -070068// Send over the buffer to recovery though the command pipe.
69static void uiPrint(State* state, const std::string& buffer) {
Tao Bao039f2da2016-11-22 16:29:50 -080070 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
Tao Baob6918c72015-05-19 17:02:16 -070071
Tao Bao039f2da2016-11-22 16:29:50 -080072 // "line1\nline2\n" will be split into 3 tokens: "line1", "line2" and "".
73 // So skip sending empty strings to UI.
74 std::vector<std::string> lines = android::base::Split(buffer, "\n");
75 for (auto& line : lines) {
76 if (!line.empty()) {
77 fprintf(ui->cmd_pipe, "ui_print %s\n", line.c_str());
Tao Bao1107d962015-09-09 17:16:55 -070078 }
Tao Bao039f2da2016-11-22 16:29:50 -080079 }
Tao Bao1107d962015-09-09 17:16:55 -070080
Tao Bao039f2da2016-11-22 16:29:50 -080081 // On the updater side, we need to dump the contents to stderr (which has
82 // been redirected to the log file). Because the recovery will only print
83 // the contents to screen when processing pipe command ui_print.
84 LOG(INFO) << buffer;
Michael Runged4a63422014-10-22 19:48:41 -070085}
86
Elliott Hughes83ce7552016-06-30 09:28:42 -070087void uiPrintf(State* _Nonnull state, const char* _Nonnull format, ...) {
Tao Bao039f2da2016-11-22 16:29:50 -080088 std::string error_msg;
Tao Bao1107d962015-09-09 17:16:55 -070089
Tao Bao039f2da2016-11-22 16:29:50 -080090 va_list ap;
91 va_start(ap, format);
92 android::base::StringAppendV(&error_msg, format, ap);
93 va_end(ap);
Tao Bao1107d962015-09-09 17:16:55 -070094
Tao Bao039f2da2016-11-22 16:29:50 -080095 uiPrint(state, error_msg);
Michael Runged4a63422014-10-22 19:48:41 -070096}
97
Doug Zongker3d177d02010-07-01 09:18:44 -070098// mount(fs_type, partition_type, location, mount_point)
Tao Bao0831d0b2016-11-03 23:25:04 -070099// mount(fs_type, partition_type, location, mount_point, mount_options)
Tianjie Xuc4447322017-03-06 14:44:59 -0800100
Doug Zongker3d177d02010-07-01 09:18:44 -0700101// fs_type="ext4" partition_type="EMMC" location=device
Tianjie Xuc4447322017-03-06 14:44:59 -0800102Value* MountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
103 if (argv.size() != 4 && argv.size() != 5) {
104 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %zu", name,
105 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800106 }
107
108 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800109 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800110 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
111 }
112 const std::string& fs_type = args[0];
113 const std::string& partition_type = args[1];
114 const std::string& location = args[2];
115 const std::string& mount_point = args[3];
116 std::string mount_options;
117
Tianjie Xuc4447322017-03-06 14:44:59 -0800118 if (argv.size() == 5) {
Tao Bao039f2da2016-11-22 16:29:50 -0800119 mount_options = args[4];
120 }
121
122 if (fs_type.empty()) {
123 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
124 }
125 if (partition_type.empty()) {
126 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
127 name);
128 }
129 if (location.empty()) {
130 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
131 }
132 if (mount_point.empty()) {
133 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
134 name);
135 }
136
137 {
138 char* secontext = nullptr;
139
140 if (sehandle) {
141 selabel_lookup(sehandle, &secontext, mount_point.c_str(), 0755);
142 setfscreatecon(secontext);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700143 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700144
Tao Bao039f2da2016-11-22 16:29:50 -0800145 mkdir(mount_point.c_str(), 0755);
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700146
Tao Bao039f2da2016-11-22 16:29:50 -0800147 if (secontext) {
148 freecon(secontext);
149 setfscreatecon(nullptr);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700150 }
Tao Bao039f2da2016-11-22 16:29:50 -0800151 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700152
Tao Bao039f2da2016-11-22 16:29:50 -0800153 if (mount(location.c_str(), mount_point.c_str(), fs_type.c_str(),
154 MS_NOATIME | MS_NODEV | MS_NODIRATIME, mount_options.c_str()) < 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700155 uiPrintf(state, "%s: Failed to mount %s at %s: %s", name, location.c_str(), mount_point.c_str(),
156 strerror(errno));
Tao Bao039f2da2016-11-22 16:29:50 -0800157 return StringValue("");
158 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700159
Tao Bao039f2da2016-11-22 16:29:50 -0800160 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700161}
162
Doug Zongker8edb00c2009-06-11 17:21:44 -0700163// is_mounted(mount_point)
Tianjie Xuc4447322017-03-06 14:44:59 -0800164Value* IsMountedFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
165 if (argv.size() != 1) {
166 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800167 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700168
Tao Bao039f2da2016-11-22 16:29:50 -0800169 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800170 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800171 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
172 }
173 const std::string& mount_point = args[0];
174 if (mount_point.empty()) {
175 return ErrorAbort(state, kArgsParsingFailure,
176 "mount_point argument to unmount() can't be empty");
177 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700178
Tao Bao039f2da2016-11-22 16:29:50 -0800179 scan_mounted_volumes();
180 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
181 if (vol == nullptr) {
182 return StringValue("");
183 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700184
Tao Bao039f2da2016-11-22 16:29:50 -0800185 return StringValue(mount_point);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700186}
187
Tianjie Xuc4447322017-03-06 14:44:59 -0800188Value* UnmountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
189 if (argv.size() != 1) {
190 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800191 }
192 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800193 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800194 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
195 }
196 const std::string& mount_point = args[0];
197 if (mount_point.empty()) {
198 return ErrorAbort(state, kArgsParsingFailure,
199 "mount_point argument to unmount() can't be empty");
200 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700201
Tao Bao039f2da2016-11-22 16:29:50 -0800202 scan_mounted_volumes();
203 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
204 if (vol == nullptr) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700205 uiPrintf(state, "Failed to unmount %s: No such volume", mount_point.c_str());
Tao Bao039f2da2016-11-22 16:29:50 -0800206 return nullptr;
207 } else {
208 int ret = unmount_mounted_volume(vol);
209 if (ret != 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700210 uiPrintf(state, "Failed to unmount %s: %s", mount_point.c_str(), strerror(errno));
Doug Zongker9931f7f2009-06-10 14:11:53 -0700211 }
Tao Bao039f2da2016-11-22 16:29:50 -0800212 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700213
Tao Bao039f2da2016-11-22 16:29:50 -0800214 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700215}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700216
JP Abgrall37aedb32014-06-16 19:07:39 -0700217static int exec_cmd(const char* path, char* const argv[]) {
Tao Bao039f2da2016-11-22 16:29:50 -0800218 pid_t child;
219 if ((child = vfork()) == 0) {
220 execv(path, argv);
Tao Bao3da88012017-02-03 13:09:23 -0800221 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800222 }
223
224 int status;
225 waitpid(child, &status, 0);
226 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
227 LOG(ERROR) << path << " failed with status " << WEXITSTATUS(status);
228 }
229 return WEXITSTATUS(status);
JP Abgrall37aedb32014-06-16 19:07:39 -0700230}
231
Stephen Smalley779701d2012-02-09 14:13:23 -0500232// format(fs_type, partition_type, location, fs_size, mount_point)
Doug Zongker9931f7f2009-06-10 14:11:53 -0700233//
Tao Bao039f2da2016-11-22 16:29:50 -0800234// fs_type="ext4" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
235// fs_type="f2fs" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
JP Abgrall37aedb32014-06-16 19:07:39 -0700236// if fs_size == 0, then make fs uses the entire partition.
Ken Sumrall8f132ed2011-01-14 18:55:05 -0800237// if fs_size > 0, that is the size to use
JP Abgrall37aedb32014-06-16 19:07:39 -0700238// if fs_size < 0, then reserve that many bytes at the end of the partition (not for "f2fs")
Tianjie Xuc4447322017-03-06 14:44:59 -0800239Value* FormatFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
240 if (argv.size() != 5) {
241 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %zu", name,
242 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800243 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500244
Tao Bao039f2da2016-11-22 16:29:50 -0800245 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800246 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800247 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
248 }
249 const std::string& fs_type = args[0];
250 const std::string& partition_type = args[1];
251 const std::string& location = args[2];
252 const std::string& fs_size = args[3];
253 const std::string& mount_point = args[4];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700254
Tao Bao039f2da2016-11-22 16:29:50 -0800255 if (fs_type.empty()) {
256 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
257 }
258 if (partition_type.empty()) {
259 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
260 name);
261 }
262 if (location.empty()) {
263 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
264 }
265 if (mount_point.empty()) {
266 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
267 name);
268 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700269
Tao Bao039f2da2016-11-22 16:29:50 -0800270 int64_t size;
271 if (!android::base::ParseInt(fs_size, &size)) {
272 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
273 fs_size.c_str());
274 }
275
276 if (fs_type == "ext4") {
Jin Qianded2dac2017-04-21 14:36:12 -0700277 const char* mke2fs_argv[] = { "/sbin/mke2fs_static", "-t", "ext4", "-b", "4096",
278 location.c_str(), nullptr, nullptr };
279 std::string size_str;
280 if (size != 0) {
281 size_str = std::to_string(size / 4096LL);
282 mke2fs_argv[6] = size_str.c_str();
283 }
284
285 int status = exec_cmd(mke2fs_argv[0], const_cast<char**>(mke2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800286 if (status != 0) {
Jin Qianded2dac2017-04-21 14:36:12 -0700287 LOG(WARNING) << name << ": mke2fs failed (" << status << ") on " << location
288 << ", falling back to make_ext4fs";
289 status = make_ext4fs(location.c_str(), size, mount_point.c_str(), sehandle);
290 if (status != 0) {
291 LOG(ERROR) << name << ": make_ext4fs failed (" << status << ") on " << location;
292 return StringValue("");
293 }
294 return StringValue(location);
295 }
296
Tao Bao338be532017-07-11 16:45:04 -0700297 const char* e2fsdroid_argv[] = { "/sbin/e2fsdroid_static", "-e", "-a", mount_point.c_str(),
Jin Qianded2dac2017-04-21 14:36:12 -0700298 location.c_str(), nullptr };
299 status = exec_cmd(e2fsdroid_argv[0], const_cast<char**>(e2fsdroid_argv));
300 if (status != 0) {
301 LOG(ERROR) << name << ": e2fsdroid failed (" << status << ") on " << location;
Tao Bao039f2da2016-11-22 16:29:50 -0800302 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700303 }
Tao Bao039f2da2016-11-22 16:29:50 -0800304 return StringValue(location);
305 } else if (fs_type == "f2fs") {
306 if (size < 0) {
307 LOG(ERROR) << name << ": fs_size can't be negative for f2fs: " << fs_size;
308 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700309 }
Tao Bao039f2da2016-11-22 16:29:50 -0800310 std::string num_sectors = std::to_string(size / 512);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700311
Tao Bao039f2da2016-11-22 16:29:50 -0800312 const char* f2fs_path = "/sbin/mkfs.f2fs";
Tao Bao397a8132017-05-12 11:02:27 -0700313 const char* f2fs_argv[] = {
314 "mkfs.f2fs", "-t", "-d1", location.c_str(), (size < 512) ? nullptr : num_sectors.c_str(),
315 nullptr
316 };
317 int status = exec_cmd(f2fs_path, const_cast<char**>(f2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800318 if (status != 0) {
319 LOG(ERROR) << name << ": mkfs.f2fs failed (" << status << ") on " << location;
320 return StringValue("");
321 }
322 return StringValue(location);
323 } else {
324 LOG(ERROR) << name << ": unsupported fs_type \"" << fs_type << "\" partition_type \""
325 << partition_type << "\"";
326 }
327
328 return nullptr;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700329}
330
Tianjie Xuc4447322017-03-06 14:44:59 -0800331Value* ShowProgressFn(const char* name, State* state,
332 const std::vector<std::unique_ptr<Expr>>& argv) {
333 if (argv.size() != 2) {
334 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
335 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800336 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700337
Tao Bao039f2da2016-11-22 16:29:50 -0800338 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800339 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800340 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
341 }
342 const std::string& frac_str = args[0];
343 const std::string& sec_str = args[1];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700344
Tao Bao039f2da2016-11-22 16:29:50 -0800345 double frac;
346 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
347 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
348 frac_str.c_str());
349 }
350 int sec;
351 if (!android::base::ParseInt(sec_str.c_str(), &sec)) {
352 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
353 sec_str.c_str());
354 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700355
Tao Bao039f2da2016-11-22 16:29:50 -0800356 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
357 fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700358
Tao Bao039f2da2016-11-22 16:29:50 -0800359 return StringValue(frac_str);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700360}
361
Tianjie Xuc4447322017-03-06 14:44:59 -0800362Value* SetProgressFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
363 if (argv.size() != 1) {
364 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800365 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700366
Tao Bao039f2da2016-11-22 16:29:50 -0800367 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800368 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800369 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
370 }
371 const std::string& frac_str = args[0];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700372
Tao Bao039f2da2016-11-22 16:29:50 -0800373 double frac;
374 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
375 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
376 frac_str.c_str());
377 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700378
Tao Bao039f2da2016-11-22 16:29:50 -0800379 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
380 fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700381
Tao Bao039f2da2016-11-22 16:29:50 -0800382 return StringValue(frac_str);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700383}
384
Tao Baoef0eb3b2016-11-14 21:29:52 -0800385// package_extract_file(package_file[, dest_file])
386// Extracts a single package_file from the update package and writes it to dest_file,
387// overwriting existing files if necessary. Without the dest_file argument, returns the
388// contents of the package file as a binary blob.
Tianjie Xuc4447322017-03-06 14:44:59 -0800389Value* PackageExtractFileFn(const char* name, State* state,
390 const std::vector<std::unique_ptr<Expr>>& argv) {
391 if (argv.size() < 1 || argv.size() > 2) {
392 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
393 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800394 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700395
Tianjie Xuc4447322017-03-06 14:44:59 -0800396 if (argv.size() == 2) {
Tao Baoef0eb3b2016-11-14 21:29:52 -0800397 // The two-argument version extracts to a file.
398
399 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800400 if (!ReadArgs(state, argv, &args)) {
401 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
402 argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700403 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800404 const std::string& zip_path = args[0];
405 const std::string& dest_path = args[1];
Doug Zongker43772d22014-06-09 14:13:19 -0700406
Tao Baoef0eb3b2016-11-14 21:29:52 -0800407 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
408 ZipString zip_string_path(zip_path.c_str());
409 ZipEntry entry;
410 if (FindEntry(za, zip_string_path, &entry) != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800411 LOG(ERROR) << name << ": no " << zip_path << " in package";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800412 return StringValue("");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700413 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800414
Tao Bao358c2ec2016-11-28 11:48:43 -0800415 unique_fd fd(TEMP_FAILURE_RETRY(
416 ota_open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
Tao Baoef0eb3b2016-11-14 21:29:52 -0800417 if (fd == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800418 PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800419 return StringValue("");
420 }
421
422 bool success = true;
423 int32_t ret = ExtractEntryToFile(za, &entry, fd);
424 if (ret != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800425 LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
426 << entry.uncompressed_length << " bytes) to \"" << dest_path
427 << "\": " << ErrorCodeString(ret);
Tao Baoef0eb3b2016-11-14 21:29:52 -0800428 success = false;
429 }
430 if (ota_fsync(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800431 PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800432 success = false;
433 }
434 if (ota_close(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800435 PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800436 success = false;
437 }
438
439 return StringValue(success ? "t" : "");
440 } else {
441 // The one-argument version returns the contents of the file as the result.
442
443 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800444 if (!ReadArgs(state, argv, &args)) {
445 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
446 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800447 }
448 const std::string& zip_path = args[0];
449
450 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
451 ZipString zip_string_path(zip_path.c_str());
452 ZipEntry entry;
453 if (FindEntry(za, zip_string_path, &entry) != 0) {
454 return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
455 zip_path.c_str());
456 }
457
458 std::string buffer;
459 buffer.resize(entry.uncompressed_length);
460
461 int32_t ret = ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
462 if (ret != 0) {
463 return ErrorAbort(state, kPackageExtractFileFailure,
464 "%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
465 zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
466 }
467
468 return new Value(VAL_BLOB, buffer);
469 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700470}
471
Tianjie Xuc4447322017-03-06 14:44:59 -0800472Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
473 if (argv.size() != 1) {
474 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800475 }
476 std::string key;
477 if (!Evaluate(state, argv[0], &key)) {
478 return nullptr;
479 }
480 std::string value = android::base::GetProperty(key, "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700481
Tao Bao039f2da2016-11-22 16:29:50 -0800482 return StringValue(value);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700483}
484
Doug Zongker47cace92009-06-18 10:11:50 -0700485// file_getprop(file, key)
486//
487// interprets 'file' as a getprop-style file (key=value pairs, one
Tao Bao51d516e2016-11-03 14:49:01 -0700488// per line. # comment lines, blank lines, lines without '=' ignored),
Michael Rungeaa1a31e2014-04-25 18:47:18 -0700489// and returns the value for 'key' (or "" if it isn't defined).
Tianjie Xuc4447322017-03-06 14:44:59 -0800490Value* FileGetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
491 if (argv.size() != 2) {
492 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
493 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800494 }
495
496 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800497 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800498 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
499 }
500 const std::string& filename = args[0];
501 const std::string& key = args[1];
502
503 struct stat st;
504 if (stat(filename.c_str(), &st) < 0) {
505 return ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name,
506 filename.c_str(), strerror(errno));
507 }
508
509 constexpr off_t MAX_FILE_GETPROP_SIZE = 65536;
510 if (st.st_size > MAX_FILE_GETPROP_SIZE) {
511 return ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %lld)",
512 filename.c_str(), name, static_cast<long long>(MAX_FILE_GETPROP_SIZE));
513 }
514
515 std::string buffer(st.st_size, '\0');
516 unique_file f(ota_fopen(filename.c_str(), "rb"));
517 if (f == nullptr) {
518 return ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename.c_str(),
519 strerror(errno));
520 }
521
522 if (ota_fread(&buffer[0], 1, st.st_size, f.get()) != static_cast<size_t>(st.st_size)) {
523 ErrorAbort(state, kFreadFailure, "%s: failed to read %zu bytes from %s", name,
524 static_cast<size_t>(st.st_size), filename.c_str());
525 return nullptr;
526 }
527
528 ota_fclose(f);
529
530 std::vector<std::string> lines = android::base::Split(buffer, "\n");
531 for (size_t i = 0; i < lines.size(); i++) {
532 std::string line = android::base::Trim(lines[i]);
533
534 // comment or blank line: skip to next line
535 if (line.empty() || line[0] == '#') {
536 continue;
537 }
538 size_t equal_pos = line.find('=');
539 if (equal_pos == std::string::npos) {
540 continue;
Tao Bao51d516e2016-11-03 14:49:01 -0700541 }
542
Tao Bao358c2ec2016-11-28 11:48:43 -0800543 // trim whitespace between key and '='
544 std::string str = android::base::Trim(line.substr(0, equal_pos));
Doug Zongker47cace92009-06-18 10:11:50 -0700545
Tao Bao358c2ec2016-11-28 11:48:43 -0800546 // not the key we're looking for
547 if (key != str) continue;
Doug Zongker47cace92009-06-18 10:11:50 -0700548
Tao Bao358c2ec2016-11-28 11:48:43 -0800549 return StringValue(android::base::Trim(line.substr(equal_pos + 1)));
550 }
Doug Zongker47cace92009-06-18 10:11:50 -0700551
Tao Bao358c2ec2016-11-28 11:48:43 -0800552 return StringValue("");
Doug Zongker47cace92009-06-18 10:11:50 -0700553}
554
Doug Zongker8edb00c2009-06-11 17:21:44 -0700555// apply_patch_space(bytes)
Tianjie Xuc4447322017-03-06 14:44:59 -0800556Value* ApplyPatchSpaceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
557 if (argv.size() != 1) {
558 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 args, got %zu", name,
559 argv.size());
560 }
Tao Bao039f2da2016-11-22 16:29:50 -0800561 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800562 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800563 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
564 }
565 const std::string& bytes_str = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800566
Tao Bao039f2da2016-11-22 16:29:50 -0800567 size_t bytes;
568 if (!android::base::ParseUint(bytes_str.c_str(), &bytes)) {
569 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count\n\n",
570 name, bytes_str.c_str());
571 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800572
Tao Bao039f2da2016-11-22 16:29:50 -0800573 return StringValue(CacheSizeCheck(bytes) ? "" : "t");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800574}
575
Tao Bao039f2da2016-11-22 16:29:50 -0800576// apply_patch(src_file, tgt_file, tgt_sha1, tgt_size, patch1_sha1, patch1_blob, [...])
577// Applies a binary patch to the src_file to produce the tgt_file. If the desired target is the
578// same as the source, pass "-" for tgt_file. tgt_sha1 and tgt_size are the expected final SHA1
579// hash and size of the target file. The remaining arguments must come in pairs: a SHA1 hash (a
580// 40-character hex string) and a blob. The blob is the patch to be applied when the source
581// file's current contents have the given SHA1.
582//
583// The patching is done in a safe manner that guarantees the target file either has the desired
584// SHA1 hash and size, or it is untouched -- it will not be left in an unrecoverable intermediate
585// state. If the process is interrupted during patching, the target file may be in an intermediate
586// state; a copy exists in the cache partition so restarting the update can successfully update
587// the file.
Tianjie Xuc4447322017-03-06 14:44:59 -0800588Value* ApplyPatchFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
589 if (argv.size() < 6 || (argv.size() % 2) == 1) {
Tianjie Xu16255832016-04-30 11:49:59 -0700590 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 6 args and an "
Tianjie Xuc4447322017-03-06 14:44:59 -0800591 "even number, got %zu", name, argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700592 }
593
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700594 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800595 if (!ReadArgs(state, argv, &args, 0, 4)) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700596 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700597 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700598 const std::string& source_filename = args[0];
599 const std::string& target_filename = args[1];
600 const std::string& target_sha1 = args[2];
601 const std::string& target_size_str = args[3];
Doug Zongker8edb00c2009-06-11 17:21:44 -0700602
Tao Baob15fd222015-09-24 11:10:51 -0700603 size_t target_size;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700604 if (!android::base::ParseUint(target_size_str.c_str(), &target_size)) {
605 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count",
606 name, target_size_str.c_str());
Doug Zongkerc4351c72010-02-22 14:46:32 -0800607 }
608
Tianjie Xuc4447322017-03-06 14:44:59 -0800609 int patchcount = (argv.size()-4) / 2;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700610 std::vector<std::unique_ptr<Value>> arg_values;
Tianjie Xuc4447322017-03-06 14:44:59 -0800611 if (!ReadValueArgs(state, argv, &arg_values, 4, argv.size() - 4)) {
Yabin Cui64be2132016-02-03 18:16:02 -0800612 return nullptr;
613 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700614
Yabin Cui64be2132016-02-03 18:16:02 -0800615 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700616 if (arg_values[i * 2]->type != VAL_STRING) {
617 return ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name,
618 i * 2);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800619 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700620 if (arg_values[i * 2 + 1]->type != VAL_BLOB) {
621 return ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name,
622 i * 2 + 1);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800623 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700624 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700625
Tianjie Xuaced5d92016-10-12 10:55:04 -0700626 std::vector<std::string> patch_sha_str;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700627 std::vector<std::unique_ptr<Value>> patches;
Yabin Cui64be2132016-02-03 18:16:02 -0800628 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700629 patch_sha_str.push_back(arg_values[i * 2]->data);
630 patches.push_back(std::move(arg_values[i * 2 + 1]));
Doug Zongker8edb00c2009-06-11 17:21:44 -0700631 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800632
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700633 int result = applypatch(source_filename.c_str(), target_filename.c_str(),
634 target_sha1.c_str(), target_size,
635 patch_sha_str, patches, nullptr);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800636
Tianjie Xuaced5d92016-10-12 10:55:04 -0700637 return StringValue(result == 0 ? "t" : "");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800638}
639
Tao Bao039f2da2016-11-22 16:29:50 -0800640// apply_patch_check(filename, [sha1, ...])
641// Returns true if the contents of filename or the temporary copy in the cache partition (if
642// present) have a SHA-1 checksum equal to one of the given sha1 values. sha1 values are
643// specified as 40 hex digits. This function differs from sha1_check(read_file(filename),
644// sha1 [, ...]) in that it knows to check the cache partition copy, so apply_patch_check() will
645// succeed even if the file was corrupted by an interrupted apply_patch() update.
Tianjie Xuc4447322017-03-06 14:44:59 -0800646Value* ApplyPatchCheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
647 if (argv.size() < 1) {
648 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %zu", name,
649 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800650 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800651
Tao Bao039f2da2016-11-22 16:29:50 -0800652 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800653 if (!ReadArgs(state, argv, &args, 0, 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800654 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
655 }
656 const std::string& filename = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800657
Tao Bao039f2da2016-11-22 16:29:50 -0800658 std::vector<std::string> sha1s;
Tao Baodb56eb02017-03-23 06:34:20 -0700659 if (argv.size() > 1 && !ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800660 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
661 }
662 int result = applypatch_check(filename.c_str(), sha1s);
Tianjie Xuaced5d92016-10-12 10:55:04 -0700663
Tao Bao039f2da2016-11-22 16:29:50 -0800664 return StringValue(result == 0 ? "t" : "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700665}
666
Tao Bao0bbc7642017-03-29 23:57:47 -0700667// This is the updater side handler for ui_print() in edify script. Contents will be sent over to
668// the recovery side for on-screen display.
Tianjie Xuc4447322017-03-06 14:44:59 -0800669Value* UIPrintFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
Tao Bao039f2da2016-11-22 16:29:50 -0800670 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800671 if (!ReadArgs(state, argv, &args)) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700672 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
Tao Bao039f2da2016-11-22 16:29:50 -0800673 }
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700674
Tao Bao0bbc7642017-03-29 23:57:47 -0700675 std::string buffer = android::base::Join(args, "");
Tao Bao039f2da2016-11-22 16:29:50 -0800676 uiPrint(state, buffer);
677 return StringValue(buffer);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700678}
679
Tianjie Xuc4447322017-03-06 14:44:59 -0800680Value* WipeCacheFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
681 if (!argv.empty()) {
682 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
683 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800684 }
685 fprintf(static_cast<UpdaterInfo*>(state->cookie)->cmd_pipe, "wipe_cache\n");
686 return StringValue("t");
Doug Zongkerd0181b82011-10-19 10:51:12 -0700687}
688
Tianjie Xuc4447322017-03-06 14:44:59 -0800689Value* RunProgramFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
690 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800691 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
692 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700693
Tao Bao039f2da2016-11-22 16:29:50 -0800694 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800695 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800696 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
697 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700698
Tianjie Xuc4447322017-03-06 14:44:59 -0800699 char* args2[argv.size() + 1];
700 for (size_t i = 0; i < argv.size(); i++) {
Tao Bao039f2da2016-11-22 16:29:50 -0800701 args2[i] = &args[i][0];
702 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800703 args2[argv.size()] = nullptr;
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700704
Tianjie Xuc4447322017-03-06 14:44:59 -0800705 LOG(INFO) << "about to run program [" << args2[0] << "] with " << argv.size() << " args";
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700706
Tao Bao039f2da2016-11-22 16:29:50 -0800707 pid_t child = fork();
708 if (child == 0) {
709 execv(args2[0], args2);
710 PLOG(ERROR) << "run_program: execv failed";
Tao Bao3da88012017-02-03 13:09:23 -0800711 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800712 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700713
Tao Bao039f2da2016-11-22 16:29:50 -0800714 int status;
715 waitpid(child, &status, 0);
716 if (WIFEXITED(status)) {
717 if (WEXITSTATUS(status) != 0) {
718 LOG(ERROR) << "run_program: child exited with status " << WEXITSTATUS(status);
719 }
720 } else if (WIFSIGNALED(status)) {
721 LOG(ERROR) << "run_program: child terminated by signal " << WTERMSIG(status);
722 }
723
724 return StringValue(std::to_string(status));
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700725}
726
Doug Zongker512536a2010-02-17 16:11:44 -0800727// sha1_check(data)
728// to return the sha1 of the data (given in the format returned by
729// read_file).
730//
731// sha1_check(data, sha1_hex, [sha1_hex, ...])
732// returns the sha1 of the file if it matches any of the hex
733// strings passed, or "" if it does not equal any of them.
734//
Tianjie Xuc4447322017-03-06 14:44:59 -0800735Value* Sha1CheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
736 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800737 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
738 }
Doug Zongker512536a2010-02-17 16:11:44 -0800739
Tao Bao039f2da2016-11-22 16:29:50 -0800740 std::vector<std::unique_ptr<Value>> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800741 if (!ReadValueArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800742 return nullptr;
743 }
Doug Zongker512536a2010-02-17 16:11:44 -0800744
Tao Bao039f2da2016-11-22 16:29:50 -0800745 if (args[0]->type == VAL_INVALID) {
Tianjie Xuaced5d92016-10-12 10:55:04 -0700746 return StringValue("");
Tao Bao039f2da2016-11-22 16:29:50 -0800747 }
748 uint8_t digest[SHA_DIGEST_LENGTH];
749 SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
750
Tianjie Xuc4447322017-03-06 14:44:59 -0800751 if (argv.size() == 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800752 return StringValue(print_sha1(digest));
753 }
754
Tianjie Xuc4447322017-03-06 14:44:59 -0800755 for (size_t i = 1; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -0800756 uint8_t arg_digest[SHA_DIGEST_LENGTH];
757 if (args[i]->type != VAL_STRING) {
758 LOG(ERROR) << name << "(): arg " << i << " is not a string; skipping";
759 } else if (ParseSha1(args[i]->data.c_str(), arg_digest) != 0) {
760 // Warn about bad args and skip them.
761 LOG(ERROR) << name << "(): error parsing \"" << args[i]->data << "\" as sha-1; skipping";
762 } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
763 // Found a match.
764 return args[i].release();
765 }
766 }
767
768 // Didn't match any of the hex strings; return false.
769 return StringValue("");
Doug Zongker512536a2010-02-17 16:11:44 -0800770}
771
Hristo Bojinovdb314d62010-08-02 10:29:49 -0700772// Read a local file and return its contents (the Value* returned
Doug Zongker512536a2010-02-17 16:11:44 -0800773// is actually a FileContents*).
Tianjie Xuc4447322017-03-06 14:44:59 -0800774Value* ReadFileFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
775 if (argv.size() != 1) {
776 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800777 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700778
Tao Bao039f2da2016-11-22 16:29:50 -0800779 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800780 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800781 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
782 }
783 const std::string& filename = args[0];
Doug Zongker512536a2010-02-17 16:11:44 -0800784
Tao Bao039f2da2016-11-22 16:29:50 -0800785 Value* v = new Value(VAL_INVALID, "");
Doug Zongker512536a2010-02-17 16:11:44 -0800786
Tao Bao039f2da2016-11-22 16:29:50 -0800787 FileContents fc;
788 if (LoadFileContents(filename.c_str(), &fc) == 0) {
789 v->type = VAL_BLOB;
790 v->data = std::string(fc.data.begin(), fc.data.end());
791 }
792 return v;
Doug Zongker512536a2010-02-17 16:11:44 -0800793}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700794
Tao Baod0f30882016-11-03 23:52:01 -0700795// write_value(value, filename)
796// Writes 'value' to 'filename'.
797// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
Tianjie Xuc4447322017-03-06 14:44:59 -0800798Value* WriteValueFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
799 if (argv.size() != 2) {
800 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
801 argv.size());
Tao Baod0f30882016-11-03 23:52:01 -0700802 }
803
804 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800805 if (!ReadArgs(state, argv, &args)) {
Tao Baod0f30882016-11-03 23:52:01 -0700806 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
807 }
808
809 const std::string& filename = args[1];
810 if (filename.empty()) {
811 return ErrorAbort(state, kArgsParsingFailure, "%s(): Filename cannot be empty", name);
812 }
813
814 const std::string& value = args[0];
815 if (!android::base::WriteStringToFile(value, filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800816 PLOG(ERROR) << name << ": Failed to write to \"" << filename << "\"";
Tao Baod0f30882016-11-03 23:52:01 -0700817 return StringValue("");
818 } else {
819 return StringValue("t");
820 }
821}
822
Doug Zongkerc87bab12013-11-25 13:53:25 -0800823// Immediately reboot the device. Recovery is not finished normally,
824// so if you reboot into recovery it will re-start applying the
825// current package (because nothing has cleared the copy of the
826// arguments stored in the BCB).
827//
828// The argument is the partition name passed to the android reboot
829// property. It can be "recovery" to boot from the recovery
830// partition, or "" (empty string) to boot from the regular boot
831// partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800832Value* RebootNowFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
833 if (argv.size() != 2) {
834 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
835 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800836 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800837
Tao Baobedf5fc2016-11-18 12:01:26 -0800838 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800839 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800840 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
841 }
842 const std::string& filename = args[0];
843 const std::string& property = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800844
Tao Baobedf5fc2016-11-18 12:01:26 -0800845 // Zero out the 'command' field of the bootloader message. Leave the rest intact.
846 bootloader_message boot;
847 std::string err;
848 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800849 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800850 return StringValue("");
851 }
852 memset(boot.command, 0, sizeof(boot.command));
853 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800854 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800855 return StringValue("");
856 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800857
Dmitri Plotnikov8706a982017-04-18 08:28:26 -0700858 std::string reboot_cmd = "reboot," + property;
859 if (android::base::GetBoolProperty("ro.boot.quiescent", false)) {
860 reboot_cmd += ",quiescent";
861 }
Tao Baobedf5fc2016-11-18 12:01:26 -0800862 android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_cmd);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800863
Tao Baobedf5fc2016-11-18 12:01:26 -0800864 sleep(5);
865 return ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800866}
867
868// Store a string value somewhere that future invocations of recovery
869// can access it. This value is called the "stage" and can be used to
870// drive packages that need to do reboots in the middle of
871// installation and keep track of where they are in the multi-stage
872// install.
873//
874// The first argument is the block device for the misc partition
875// ("/misc" in the fstab), which is where this value is stored. The
876// second argument is the string to store; it should not exceed 31
877// bytes.
Tianjie Xuc4447322017-03-06 14:44:59 -0800878Value* SetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
879 if (argv.size() != 2) {
880 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
881 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800882 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800883
Tao Baobedf5fc2016-11-18 12:01:26 -0800884 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800885 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800886 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
887 }
888 const std::string& filename = args[0];
889 const std::string& stagestr = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800890
Tao Baobedf5fc2016-11-18 12:01:26 -0800891 // Store this value in the misc partition, immediately after the
892 // bootloader message that the main recovery uses to save its
893 // arguments in case of the device restarting midway through
894 // package installation.
895 bootloader_message boot;
896 std::string err;
897 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800898 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800899 return StringValue("");
900 }
901 strlcpy(boot.stage, stagestr.c_str(), sizeof(boot.stage));
902 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800903 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800904 return StringValue("");
905 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800906
Tao Baobedf5fc2016-11-18 12:01:26 -0800907 return StringValue(filename);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800908}
909
910// Return the value most recently saved with SetStageFn. The argument
911// is the block device for the misc partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800912Value* GetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
913 if (argv.size() != 1) {
914 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800915 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800916
Tao Baobedf5fc2016-11-18 12:01:26 -0800917 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800918 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800919 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
920 }
921 const std::string& filename = args[0];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800922
Tao Baobedf5fc2016-11-18 12:01:26 -0800923 bootloader_message boot;
924 std::string err;
925 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800926 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800927 return StringValue("");
928 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800929
Tao Baobedf5fc2016-11-18 12:01:26 -0800930 return StringValue(boot.stage);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800931}
932
Tianjie Xuc4447322017-03-06 14:44:59 -0800933Value* WipeBlockDeviceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
934 if (argv.size() != 2) {
935 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
936 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800937 }
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800938
Tao Bao358c2ec2016-11-28 11:48:43 -0800939 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800940 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800941 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
942 }
943 const std::string& filename = args[0];
944 const std::string& len_str = args[1];
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800945
Tao Bao358c2ec2016-11-28 11:48:43 -0800946 size_t len;
947 if (!android::base::ParseUint(len_str.c_str(), &len)) {
948 return nullptr;
949 }
950 unique_fd fd(ota_open(filename.c_str(), O_WRONLY, 0644));
951 // The wipe_block_device function in ext4_utils returns 0 on success and 1
952 // for failure.
953 int status = wipe_block_device(fd, len);
954 return StringValue((status == 0) ? "t" : "");
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800955}
956
Tianjie Xuc4447322017-03-06 14:44:59 -0800957Value* EnableRebootFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
958 if (!argv.empty()) {
959 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
960 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800961 }
962 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
963 fprintf(ui->cmd_pipe, "enable_reboot\n");
964 return StringValue("t");
Doug Zongkerc704e062014-05-23 08:40:35 -0700965}
966
Tianjie Xuc4447322017-03-06 14:44:59 -0800967Value* Tune2FsFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
968 if (argv.empty()) {
969 return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800970 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800971
Tao Bao039f2da2016-11-22 16:29:50 -0800972 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800973 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800974 return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
975 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800976
Tianjie Xuc4447322017-03-06 14:44:59 -0800977 char* args2[argv.size() + 1];
Tao Bao039f2da2016-11-22 16:29:50 -0800978 // Tune2fs expects the program name as its args[0]
979 args2[0] = const_cast<char*>(name);
980 if (args2[0] == nullptr) {
981 return nullptr;
982 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800983 for (size_t i = 0; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -0800984 args2[i + 1] = &args[i][0];
985 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800986
Tao Bao039f2da2016-11-22 16:29:50 -0800987 // tune2fs changes the file system parameters on an ext2 file system; it
988 // returns 0 on success.
Tianjie Xuc4447322017-03-06 14:44:59 -0800989 int result = tune2fs_main(argv.size() + 1, args2);
Tao Bao039f2da2016-11-22 16:29:50 -0800990 if (result != 0) {
991 return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", name, result);
992 }
993 return StringValue("t");
Michael Rungeacf47db2014-11-21 00:12:28 -0800994}
995
Doug Zongker9931f7f2009-06-10 14:11:53 -0700996void RegisterInstallFunctions() {
Tao Bao039f2da2016-11-22 16:29:50 -0800997 RegisterFunction("mount", MountFn);
998 RegisterFunction("is_mounted", IsMountedFn);
999 RegisterFunction("unmount", UnmountFn);
1000 RegisterFunction("format", FormatFn);
1001 RegisterFunction("show_progress", ShowProgressFn);
1002 RegisterFunction("set_progress", SetProgressFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001003 RegisterFunction("package_extract_file", PackageExtractFileFn);
Nick Kralevich5dbdef02013-09-07 14:41:06 -07001004
Tao Bao039f2da2016-11-22 16:29:50 -08001005 RegisterFunction("getprop", GetPropFn);
1006 RegisterFunction("file_getprop", FileGetPropFn);
Doug Zongker8edb00c2009-06-11 17:21:44 -07001007
Tao Bao039f2da2016-11-22 16:29:50 -08001008 RegisterFunction("apply_patch", ApplyPatchFn);
1009 RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
1010 RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
Doug Zongkerd9c9d102009-06-12 12:24:39 -07001011
Tao Bao039f2da2016-11-22 16:29:50 -08001012 RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
Doug Zongker52b40362014-02-10 15:30:30 -08001013
Tao Bao039f2da2016-11-22 16:29:50 -08001014 RegisterFunction("read_file", ReadFileFn);
1015 RegisterFunction("sha1_check", Sha1CheckFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001016 RegisterFunction("write_value", WriteValueFn);
Doug Zongker512536a2010-02-17 16:11:44 -08001017
Tao Bao039f2da2016-11-22 16:29:50 -08001018 RegisterFunction("wipe_cache", WipeCacheFn);
Doug Zongkerd0181b82011-10-19 10:51:12 -07001019
Tao Bao039f2da2016-11-22 16:29:50 -08001020 RegisterFunction("ui_print", UIPrintFn);
Doug Zongkera3f89ea2009-09-10 14:10:48 -07001021
Tao Bao039f2da2016-11-22 16:29:50 -08001022 RegisterFunction("run_program", RunProgramFn);
Doug Zongkerc87bab12013-11-25 13:53:25 -08001023
Tao Bao039f2da2016-11-22 16:29:50 -08001024 RegisterFunction("reboot_now", RebootNowFn);
1025 RegisterFunction("get_stage", GetStageFn);
1026 RegisterFunction("set_stage", SetStageFn);
Doug Zongkerc704e062014-05-23 08:40:35 -07001027
Tao Bao039f2da2016-11-22 16:29:50 -08001028 RegisterFunction("enable_reboot", EnableRebootFn);
1029 RegisterFunction("tune2fs", Tune2FsFn);
Doug Zongker9931f7f2009-06-10 14:11:53 -07001030}