blob: c9a3a07998e83ec63c41b7d0b79a89854cabefe2 [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"
Tianjie Xu16255832016-04-30 11:49:59 -070060#include "error_code.h"
Elliott Hughes63a31922016-06-09 17:41:22 -070061#include "mounts.h"
Jed Estep39c1b5e2015-12-15 16:04:53 -080062#include "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
Tianjie Xud75003d2016-11-04 11:31:29 -070098static bool is_dir(const std::string& dirpath) {
99 struct stat st;
100 return stat(dirpath.c_str(), &st) == 0 && S_ISDIR(st.st_mode);
101}
102
Tao Bao0c7839a2016-10-10 15:48:37 -0700103// Create all parent directories of name, if necessary.
Tianjie Xud75003d2016-11-04 11:31:29 -0700104static bool make_parents(const std::string& name) {
Tao Bao039f2da2016-11-22 16:29:50 -0800105 size_t prev_end = 0;
106 while (prev_end < name.size()) {
107 size_t next_end = name.find('/', prev_end + 1);
108 if (next_end == std::string::npos) {
109 break;
Tao Bao0c7839a2016-10-10 15:48:37 -0700110 }
Tao Bao039f2da2016-11-22 16:29:50 -0800111 std::string dir_path = name.substr(0, next_end);
112 if (!is_dir(dir_path)) {
113 int result = mkdir(dir_path.c_str(), 0700);
114 if (result != 0) {
115 PLOG(ERROR) << "failed to mkdir " << dir_path << " when make parents for " << name;
116 return false;
117 }
118
119 LOG(INFO) << "created [" << dir_path << "]";
120 }
121 prev_end = next_end;
122 }
123 return true;
Tao Bao0c7839a2016-10-10 15:48:37 -0700124}
125
Doug Zongker3d177d02010-07-01 09:18:44 -0700126// mount(fs_type, partition_type, location, mount_point)
Tao Bao0831d0b2016-11-03 23:25:04 -0700127// mount(fs_type, partition_type, location, mount_point, mount_options)
Tianjie Xuc4447322017-03-06 14:44:59 -0800128
Doug Zongker3d177d02010-07-01 09:18:44 -0700129// fs_type="ext4" partition_type="EMMC" location=device
Tianjie Xuc4447322017-03-06 14:44:59 -0800130Value* MountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
131 if (argv.size() != 4 && argv.size() != 5) {
132 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %zu", name,
133 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800134 }
135
136 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800137 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800138 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
139 }
140 const std::string& fs_type = args[0];
141 const std::string& partition_type = args[1];
142 const std::string& location = args[2];
143 const std::string& mount_point = args[3];
144 std::string mount_options;
145
Tianjie Xuc4447322017-03-06 14:44:59 -0800146 if (argv.size() == 5) {
Tao Bao039f2da2016-11-22 16:29:50 -0800147 mount_options = args[4];
148 }
149
150 if (fs_type.empty()) {
151 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
152 }
153 if (partition_type.empty()) {
154 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
155 name);
156 }
157 if (location.empty()) {
158 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
159 }
160 if (mount_point.empty()) {
161 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
162 name);
163 }
164
165 {
166 char* secontext = nullptr;
167
168 if (sehandle) {
169 selabel_lookup(sehandle, &secontext, mount_point.c_str(), 0755);
170 setfscreatecon(secontext);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700171 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700172
Tao Bao039f2da2016-11-22 16:29:50 -0800173 mkdir(mount_point.c_str(), 0755);
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700174
Tao Bao039f2da2016-11-22 16:29:50 -0800175 if (secontext) {
176 freecon(secontext);
177 setfscreatecon(nullptr);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700178 }
Tao Bao039f2da2016-11-22 16:29:50 -0800179 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700180
Tao Bao039f2da2016-11-22 16:29:50 -0800181 if (mount(location.c_str(), mount_point.c_str(), fs_type.c_str(),
182 MS_NOATIME | MS_NODEV | MS_NODIRATIME, mount_options.c_str()) < 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700183 uiPrintf(state, "%s: Failed to mount %s at %s: %s", name, location.c_str(), mount_point.c_str(),
184 strerror(errno));
Tao Bao039f2da2016-11-22 16:29:50 -0800185 return StringValue("");
186 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700187
Tao Bao039f2da2016-11-22 16:29:50 -0800188 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700189}
190
Doug Zongker8edb00c2009-06-11 17:21:44 -0700191// is_mounted(mount_point)
Tianjie Xuc4447322017-03-06 14:44:59 -0800192Value* IsMountedFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
193 if (argv.size() != 1) {
194 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800195 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700196
Tao Bao039f2da2016-11-22 16:29:50 -0800197 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800198 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800199 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
200 }
201 const std::string& mount_point = args[0];
202 if (mount_point.empty()) {
203 return ErrorAbort(state, kArgsParsingFailure,
204 "mount_point argument to unmount() can't be empty");
205 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700206
Tao Bao039f2da2016-11-22 16:29:50 -0800207 scan_mounted_volumes();
208 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
209 if (vol == nullptr) {
210 return StringValue("");
211 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700212
Tao Bao039f2da2016-11-22 16:29:50 -0800213 return StringValue(mount_point);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700214}
215
Tianjie Xuc4447322017-03-06 14:44:59 -0800216Value* UnmountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
217 if (argv.size() != 1) {
218 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800219 }
220 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800221 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800222 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
223 }
224 const std::string& mount_point = args[0];
225 if (mount_point.empty()) {
226 return ErrorAbort(state, kArgsParsingFailure,
227 "mount_point argument to unmount() can't be empty");
228 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700229
Tao Bao039f2da2016-11-22 16:29:50 -0800230 scan_mounted_volumes();
231 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
232 if (vol == nullptr) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700233 uiPrintf(state, "Failed to unmount %s: No such volume", mount_point.c_str());
Tao Bao039f2da2016-11-22 16:29:50 -0800234 return nullptr;
235 } else {
236 int ret = unmount_mounted_volume(vol);
237 if (ret != 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700238 uiPrintf(state, "Failed to unmount %s: %s", mount_point.c_str(), strerror(errno));
Doug Zongker9931f7f2009-06-10 14:11:53 -0700239 }
Tao Bao039f2da2016-11-22 16:29:50 -0800240 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700241
Tao Bao039f2da2016-11-22 16:29:50 -0800242 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700243}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700244
JP Abgrall37aedb32014-06-16 19:07:39 -0700245static int exec_cmd(const char* path, char* const argv[]) {
Tao Bao039f2da2016-11-22 16:29:50 -0800246 pid_t child;
247 if ((child = vfork()) == 0) {
248 execv(path, argv);
Tao Bao3da88012017-02-03 13:09:23 -0800249 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800250 }
251
252 int status;
253 waitpid(child, &status, 0);
254 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
255 LOG(ERROR) << path << " failed with status " << WEXITSTATUS(status);
256 }
257 return WEXITSTATUS(status);
JP Abgrall37aedb32014-06-16 19:07:39 -0700258}
259
Stephen Smalley779701d2012-02-09 14:13:23 -0500260// format(fs_type, partition_type, location, fs_size, mount_point)
Doug Zongker9931f7f2009-06-10 14:11:53 -0700261//
Tao Bao039f2da2016-11-22 16:29:50 -0800262// fs_type="ext4" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
263// fs_type="f2fs" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
JP Abgrall37aedb32014-06-16 19:07:39 -0700264// if fs_size == 0, then make fs uses the entire partition.
Ken Sumrall8f132ed2011-01-14 18:55:05 -0800265// if fs_size > 0, that is the size to use
JP Abgrall37aedb32014-06-16 19:07:39 -0700266// 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 -0800267Value* FormatFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
268 if (argv.size() != 5) {
269 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %zu", name,
270 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800271 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500272
Tao Bao039f2da2016-11-22 16:29:50 -0800273 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800274 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800275 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
276 }
277 const std::string& fs_type = args[0];
278 const std::string& partition_type = args[1];
279 const std::string& location = args[2];
280 const std::string& fs_size = args[3];
281 const std::string& mount_point = args[4];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700282
Tao Bao039f2da2016-11-22 16:29:50 -0800283 if (fs_type.empty()) {
284 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
285 }
286 if (partition_type.empty()) {
287 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
288 name);
289 }
290 if (location.empty()) {
291 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
292 }
293 if (mount_point.empty()) {
294 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
295 name);
296 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700297
Tao Bao039f2da2016-11-22 16:29:50 -0800298 int64_t size;
299 if (!android::base::ParseInt(fs_size, &size)) {
300 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
301 fs_size.c_str());
302 }
303
304 if (fs_type == "ext4") {
Jin Qian619b1622017-04-21 14:36:12 -0700305 const char* mke2fs_argv[] = { "/sbin/mke2fs_static", "-t", "ext4", "-b", "4096",
306 location.c_str(), nullptr, nullptr };
307 std::string size_str;
308 if (size != 0) {
309 size_str = std::to_string(size / 4096LL);
310 mke2fs_argv[6] = size_str.c_str();
311 }
312
313 int status = exec_cmd(mke2fs_argv[0], const_cast<char**>(mke2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800314 if (status != 0) {
Jin Qian619b1622017-04-21 14:36:12 -0700315 LOG(WARNING) << name << ": mke2fs failed (" << status << ") on " << location
316 << ", falling back to make_ext4fs";
317 status = make_ext4fs(location.c_str(), size, mount_point.c_str(), sehandle);
318 if (status != 0) {
319 LOG(ERROR) << name << ": make_ext4fs failed (" << status << ") on " << location;
320 return StringValue("");
321 }
322 return StringValue(location);
323 }
324
325 const char* e2fsdroid_argv[] = { "/sbin/e2fsdroid_static", "-e", "-S",
326 "/file_contexts", "-a", mount_point.c_str(),
327 location.c_str(), nullptr };
328 status = exec_cmd(e2fsdroid_argv[0], const_cast<char**>(e2fsdroid_argv));
329 if (status != 0) {
330 LOG(ERROR) << name << ": e2fsdroid failed (" << status << ") on " << location;
Tao Bao039f2da2016-11-22 16:29:50 -0800331 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700332 }
Tao Bao039f2da2016-11-22 16:29:50 -0800333 return StringValue(location);
334 } else if (fs_type == "f2fs") {
335 if (size < 0) {
336 LOG(ERROR) << name << ": fs_size can't be negative for f2fs: " << fs_size;
337 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700338 }
Tao Bao039f2da2016-11-22 16:29:50 -0800339 std::string num_sectors = std::to_string(size / 512);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700340
Tao Bao039f2da2016-11-22 16:29:50 -0800341 const char* f2fs_path = "/sbin/mkfs.f2fs";
Tao Bao397a8132017-05-12 11:02:27 -0700342 const char* f2fs_argv[] = {
343 "mkfs.f2fs", "-t", "-d1", location.c_str(), (size < 512) ? nullptr : num_sectors.c_str(),
344 nullptr
345 };
346 int status = exec_cmd(f2fs_path, const_cast<char**>(f2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800347 if (status != 0) {
348 LOG(ERROR) << name << ": mkfs.f2fs failed (" << status << ") on " << location;
349 return StringValue("");
350 }
351 return StringValue(location);
352 } else {
353 LOG(ERROR) << name << ": unsupported fs_type \"" << fs_type << "\" partition_type \""
354 << partition_type << "\"";
355 }
356
357 return nullptr;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700358}
359
Tianjie Xuc4447322017-03-06 14:44:59 -0800360Value* ShowProgressFn(const char* name, State* state,
361 const std::vector<std::unique_ptr<Expr>>& argv) {
362 if (argv.size() != 2) {
363 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
364 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800365 }
Doug Zongker9931f7f2009-06-10 14:11:53 -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];
372 const std::string& sec_str = args[1];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700373
Tao Bao039f2da2016-11-22 16:29:50 -0800374 double frac;
375 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
376 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
377 frac_str.c_str());
378 }
379 int sec;
380 if (!android::base::ParseInt(sec_str.c_str(), &sec)) {
381 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
382 sec_str.c_str());
383 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700384
Tao Bao039f2da2016-11-22 16:29:50 -0800385 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
386 fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700387
Tao Bao039f2da2016-11-22 16:29:50 -0800388 return StringValue(frac_str);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700389}
390
Tianjie Xuc4447322017-03-06 14:44:59 -0800391Value* SetProgressFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
392 if (argv.size() != 1) {
393 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800394 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700395
Tao Bao039f2da2016-11-22 16:29:50 -0800396 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800397 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800398 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
399 }
400 const std::string& frac_str = args[0];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700401
Tao Bao039f2da2016-11-22 16:29:50 -0800402 double frac;
403 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
404 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
405 frac_str.c_str());
406 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700407
Tao Bao039f2da2016-11-22 16:29:50 -0800408 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
409 fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700410
Tao Bao039f2da2016-11-22 16:29:50 -0800411 return StringValue(frac_str);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700412}
413
Tao Baoef0eb3b2016-11-14 21:29:52 -0800414// package_extract_file(package_file[, dest_file])
415// Extracts a single package_file from the update package and writes it to dest_file,
416// overwriting existing files if necessary. Without the dest_file argument, returns the
417// contents of the package file as a binary blob.
Tianjie Xuc4447322017-03-06 14:44:59 -0800418Value* PackageExtractFileFn(const char* name, State* state,
419 const std::vector<std::unique_ptr<Expr>>& argv) {
420 if (argv.size() < 1 || argv.size() > 2) {
421 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
422 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800423 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700424
Tianjie Xuc4447322017-03-06 14:44:59 -0800425 if (argv.size() == 2) {
Tao Baoef0eb3b2016-11-14 21:29:52 -0800426 // The two-argument version extracts to a file.
427
428 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800429 if (!ReadArgs(state, argv, &args)) {
430 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
431 argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700432 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800433 const std::string& zip_path = args[0];
434 const std::string& dest_path = args[1];
Doug Zongker43772d22014-06-09 14:13:19 -0700435
Tao Baoef0eb3b2016-11-14 21:29:52 -0800436 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
437 ZipString zip_string_path(zip_path.c_str());
438 ZipEntry entry;
439 if (FindEntry(za, zip_string_path, &entry) != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800440 LOG(ERROR) << name << ": no " << zip_path << " in package";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800441 return StringValue("");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700442 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800443
Tao Bao358c2ec2016-11-28 11:48:43 -0800444 unique_fd fd(TEMP_FAILURE_RETRY(
445 ota_open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
Tao Baoef0eb3b2016-11-14 21:29:52 -0800446 if (fd == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800447 PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800448 return StringValue("");
449 }
450
451 bool success = true;
452 int32_t ret = ExtractEntryToFile(za, &entry, fd);
453 if (ret != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800454 LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
455 << entry.uncompressed_length << " bytes) to \"" << dest_path
456 << "\": " << ErrorCodeString(ret);
Tao Baoef0eb3b2016-11-14 21:29:52 -0800457 success = false;
458 }
459 if (ota_fsync(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800460 PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800461 success = false;
462 }
463 if (ota_close(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800464 PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800465 success = false;
466 }
467
468 return StringValue(success ? "t" : "");
469 } else {
470 // The one-argument version returns the contents of the file as the result.
471
472 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800473 if (!ReadArgs(state, argv, &args)) {
474 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
475 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800476 }
477 const std::string& zip_path = args[0];
478
479 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
480 ZipString zip_string_path(zip_path.c_str());
481 ZipEntry entry;
482 if (FindEntry(za, zip_string_path, &entry) != 0) {
483 return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
484 zip_path.c_str());
485 }
486
487 std::string buffer;
488 buffer.resize(entry.uncompressed_length);
489
490 int32_t ret = ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
491 if (ret != 0) {
492 return ErrorAbort(state, kPackageExtractFileFailure,
493 "%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
494 zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
495 }
496
497 return new Value(VAL_BLOB, buffer);
498 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700499}
500
Tianjie Xuc4447322017-03-06 14:44:59 -0800501Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
502 if (argv.size() != 1) {
503 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800504 }
505 std::string key;
506 if (!Evaluate(state, argv[0], &key)) {
507 return nullptr;
508 }
509 std::string value = android::base::GetProperty(key, "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700510
Tao Bao039f2da2016-11-22 16:29:50 -0800511 return StringValue(value);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700512}
513
Doug Zongker47cace92009-06-18 10:11:50 -0700514// file_getprop(file, key)
515//
516// interprets 'file' as a getprop-style file (key=value pairs, one
Tao Bao51d516e2016-11-03 14:49:01 -0700517// per line. # comment lines, blank lines, lines without '=' ignored),
Michael Rungeaa1a31e2014-04-25 18:47:18 -0700518// and returns the value for 'key' (or "" if it isn't defined).
Tianjie Xuc4447322017-03-06 14:44:59 -0800519Value* FileGetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
520 if (argv.size() != 2) {
521 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
522 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800523 }
524
525 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800526 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800527 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
528 }
529 const std::string& filename = args[0];
530 const std::string& key = args[1];
531
532 struct stat st;
533 if (stat(filename.c_str(), &st) < 0) {
534 return ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name,
535 filename.c_str(), strerror(errno));
536 }
537
538 constexpr off_t MAX_FILE_GETPROP_SIZE = 65536;
539 if (st.st_size > MAX_FILE_GETPROP_SIZE) {
540 return ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %lld)",
541 filename.c_str(), name, static_cast<long long>(MAX_FILE_GETPROP_SIZE));
542 }
543
544 std::string buffer(st.st_size, '\0');
545 unique_file f(ota_fopen(filename.c_str(), "rb"));
546 if (f == nullptr) {
547 return ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename.c_str(),
548 strerror(errno));
549 }
550
551 if (ota_fread(&buffer[0], 1, st.st_size, f.get()) != static_cast<size_t>(st.st_size)) {
552 ErrorAbort(state, kFreadFailure, "%s: failed to read %zu bytes from %s", name,
553 static_cast<size_t>(st.st_size), filename.c_str());
554 return nullptr;
555 }
556
557 ota_fclose(f);
558
559 std::vector<std::string> lines = android::base::Split(buffer, "\n");
560 for (size_t i = 0; i < lines.size(); i++) {
561 std::string line = android::base::Trim(lines[i]);
562
563 // comment or blank line: skip to next line
564 if (line.empty() || line[0] == '#') {
565 continue;
566 }
567 size_t equal_pos = line.find('=');
568 if (equal_pos == std::string::npos) {
569 continue;
Tao Bao51d516e2016-11-03 14:49:01 -0700570 }
571
Tao Bao358c2ec2016-11-28 11:48:43 -0800572 // trim whitespace between key and '='
573 std::string str = android::base::Trim(line.substr(0, equal_pos));
Doug Zongker47cace92009-06-18 10:11:50 -0700574
Tao Bao358c2ec2016-11-28 11:48:43 -0800575 // not the key we're looking for
576 if (key != str) continue;
Doug Zongker47cace92009-06-18 10:11:50 -0700577
Tao Bao358c2ec2016-11-28 11:48:43 -0800578 return StringValue(android::base::Trim(line.substr(equal_pos + 1)));
579 }
Doug Zongker47cace92009-06-18 10:11:50 -0700580
Tao Bao358c2ec2016-11-28 11:48:43 -0800581 return StringValue("");
Doug Zongker47cace92009-06-18 10:11:50 -0700582}
583
Doug Zongker8edb00c2009-06-11 17:21:44 -0700584// apply_patch_space(bytes)
Tianjie Xuc4447322017-03-06 14:44:59 -0800585Value* ApplyPatchSpaceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
586 if (argv.size() != 1) {
587 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 args, got %zu", name,
588 argv.size());
589 }
Tao Bao039f2da2016-11-22 16:29:50 -0800590 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800591 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800592 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
593 }
594 const std::string& bytes_str = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800595
Tao Bao039f2da2016-11-22 16:29:50 -0800596 size_t bytes;
597 if (!android::base::ParseUint(bytes_str.c_str(), &bytes)) {
598 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count\n\n",
599 name, bytes_str.c_str());
600 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800601
Tao Bao039f2da2016-11-22 16:29:50 -0800602 return StringValue(CacheSizeCheck(bytes) ? "" : "t");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800603}
604
Tao Bao039f2da2016-11-22 16:29:50 -0800605// apply_patch(src_file, tgt_file, tgt_sha1, tgt_size, patch1_sha1, patch1_blob, [...])
606// Applies a binary patch to the src_file to produce the tgt_file. If the desired target is the
607// same as the source, pass "-" for tgt_file. tgt_sha1 and tgt_size are the expected final SHA1
608// hash and size of the target file. The remaining arguments must come in pairs: a SHA1 hash (a
609// 40-character hex string) and a blob. The blob is the patch to be applied when the source
610// file's current contents have the given SHA1.
611//
612// The patching is done in a safe manner that guarantees the target file either has the desired
613// SHA1 hash and size, or it is untouched -- it will not be left in an unrecoverable intermediate
614// state. If the process is interrupted during patching, the target file may be in an intermediate
615// state; a copy exists in the cache partition so restarting the update can successfully update
616// the file.
Tianjie Xuc4447322017-03-06 14:44:59 -0800617Value* ApplyPatchFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
618 if (argv.size() < 6 || (argv.size() % 2) == 1) {
Tianjie Xu16255832016-04-30 11:49:59 -0700619 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 6 args and an "
Tianjie Xuc4447322017-03-06 14:44:59 -0800620 "even number, got %zu", name, argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700621 }
622
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700623 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800624 if (!ReadArgs(state, argv, &args, 0, 4)) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700625 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700626 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700627 const std::string& source_filename = args[0];
628 const std::string& target_filename = args[1];
629 const std::string& target_sha1 = args[2];
630 const std::string& target_size_str = args[3];
Doug Zongker8edb00c2009-06-11 17:21:44 -0700631
Tao Baob15fd222015-09-24 11:10:51 -0700632 size_t target_size;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700633 if (!android::base::ParseUint(target_size_str.c_str(), &target_size)) {
634 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count",
635 name, target_size_str.c_str());
Doug Zongkerc4351c72010-02-22 14:46:32 -0800636 }
637
Tianjie Xuc4447322017-03-06 14:44:59 -0800638 int patchcount = (argv.size()-4) / 2;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700639 std::vector<std::unique_ptr<Value>> arg_values;
Tianjie Xuc4447322017-03-06 14:44:59 -0800640 if (!ReadValueArgs(state, argv, &arg_values, 4, argv.size() - 4)) {
Yabin Cui64be2132016-02-03 18:16:02 -0800641 return nullptr;
642 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700643
Yabin Cui64be2132016-02-03 18:16:02 -0800644 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700645 if (arg_values[i * 2]->type != VAL_STRING) {
646 return ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name,
647 i * 2);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800648 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700649 if (arg_values[i * 2 + 1]->type != VAL_BLOB) {
650 return ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name,
651 i * 2 + 1);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800652 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700653 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700654
Tianjie Xuaced5d92016-10-12 10:55:04 -0700655 std::vector<std::string> patch_sha_str;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700656 std::vector<std::unique_ptr<Value>> patches;
Yabin Cui64be2132016-02-03 18:16:02 -0800657 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700658 patch_sha_str.push_back(arg_values[i * 2]->data);
659 patches.push_back(std::move(arg_values[i * 2 + 1]));
Doug Zongker8edb00c2009-06-11 17:21:44 -0700660 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800661
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700662 int result = applypatch(source_filename.c_str(), target_filename.c_str(),
663 target_sha1.c_str(), target_size,
664 patch_sha_str, patches, nullptr);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800665
Tianjie Xuaced5d92016-10-12 10:55:04 -0700666 return StringValue(result == 0 ? "t" : "");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800667}
668
Tao Bao039f2da2016-11-22 16:29:50 -0800669// apply_patch_check(filename, [sha1, ...])
670// Returns true if the contents of filename or the temporary copy in the cache partition (if
671// present) have a SHA-1 checksum equal to one of the given sha1 values. sha1 values are
672// specified as 40 hex digits. This function differs from sha1_check(read_file(filename),
673// sha1 [, ...]) in that it knows to check the cache partition copy, so apply_patch_check() will
674// succeed even if the file was corrupted by an interrupted apply_patch() update.
Tianjie Xuc4447322017-03-06 14:44:59 -0800675Value* ApplyPatchCheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
676 if (argv.size() < 1) {
677 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %zu", name,
678 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800679 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800680
Tao Bao039f2da2016-11-22 16:29:50 -0800681 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800682 if (!ReadArgs(state, argv, &args, 0, 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800683 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
684 }
685 const std::string& filename = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800686
Tao Bao039f2da2016-11-22 16:29:50 -0800687 std::vector<std::string> sha1s;
Tao Baodb56eb02017-03-23 06:34:20 -0700688 if (argv.size() > 1 && !ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800689 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
690 }
691 int result = applypatch_check(filename.c_str(), sha1s);
Tianjie Xuaced5d92016-10-12 10:55:04 -0700692
Tao Bao039f2da2016-11-22 16:29:50 -0800693 return StringValue(result == 0 ? "t" : "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700694}
695
Tao Bao0bbc7642017-03-29 23:57:47 -0700696// This is the updater side handler for ui_print() in edify script. Contents will be sent over to
697// the recovery side for on-screen display.
Tianjie Xuc4447322017-03-06 14:44:59 -0800698Value* UIPrintFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
Tao Bao039f2da2016-11-22 16:29:50 -0800699 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800700 if (!ReadArgs(state, argv, &args)) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700701 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
Tao Bao039f2da2016-11-22 16:29:50 -0800702 }
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700703
Tao Bao0bbc7642017-03-29 23:57:47 -0700704 std::string buffer = android::base::Join(args, "");
Tao Bao039f2da2016-11-22 16:29:50 -0800705 uiPrint(state, buffer);
706 return StringValue(buffer);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700707}
708
Tianjie Xuc4447322017-03-06 14:44:59 -0800709Value* WipeCacheFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
710 if (!argv.empty()) {
711 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
712 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800713 }
714 fprintf(static_cast<UpdaterInfo*>(state->cookie)->cmd_pipe, "wipe_cache\n");
715 return StringValue("t");
Doug Zongkerd0181b82011-10-19 10:51:12 -0700716}
717
Tianjie Xuc4447322017-03-06 14:44:59 -0800718Value* RunProgramFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
719 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800720 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
721 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700722
Tao Bao039f2da2016-11-22 16:29:50 -0800723 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800724 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800725 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
726 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700727
Tianjie Xuc4447322017-03-06 14:44:59 -0800728 char* args2[argv.size() + 1];
729 for (size_t i = 0; i < argv.size(); i++) {
Tao Bao039f2da2016-11-22 16:29:50 -0800730 args2[i] = &args[i][0];
731 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800732 args2[argv.size()] = nullptr;
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700733
Tianjie Xuc4447322017-03-06 14:44:59 -0800734 LOG(INFO) << "about to run program [" << args2[0] << "] with " << argv.size() << " args";
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700735
Tao Bao039f2da2016-11-22 16:29:50 -0800736 pid_t child = fork();
737 if (child == 0) {
738 execv(args2[0], args2);
739 PLOG(ERROR) << "run_program: execv failed";
Tao Bao3da88012017-02-03 13:09:23 -0800740 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800741 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700742
Tao Bao039f2da2016-11-22 16:29:50 -0800743 int status;
744 waitpid(child, &status, 0);
745 if (WIFEXITED(status)) {
746 if (WEXITSTATUS(status) != 0) {
747 LOG(ERROR) << "run_program: child exited with status " << WEXITSTATUS(status);
748 }
749 } else if (WIFSIGNALED(status)) {
750 LOG(ERROR) << "run_program: child terminated by signal " << WTERMSIG(status);
751 }
752
753 return StringValue(std::to_string(status));
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700754}
755
Doug Zongker512536a2010-02-17 16:11:44 -0800756// sha1_check(data)
757// to return the sha1 of the data (given in the format returned by
758// read_file).
759//
760// sha1_check(data, sha1_hex, [sha1_hex, ...])
761// returns the sha1 of the file if it matches any of the hex
762// strings passed, or "" if it does not equal any of them.
763//
Tianjie Xuc4447322017-03-06 14:44:59 -0800764Value* Sha1CheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
765 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800766 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
767 }
Doug Zongker512536a2010-02-17 16:11:44 -0800768
Tao Bao039f2da2016-11-22 16:29:50 -0800769 std::vector<std::unique_ptr<Value>> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800770 if (!ReadValueArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800771 return nullptr;
772 }
Doug Zongker512536a2010-02-17 16:11:44 -0800773
Tao Bao039f2da2016-11-22 16:29:50 -0800774 if (args[0]->type == VAL_INVALID) {
Tianjie Xuaced5d92016-10-12 10:55:04 -0700775 return StringValue("");
Tao Bao039f2da2016-11-22 16:29:50 -0800776 }
777 uint8_t digest[SHA_DIGEST_LENGTH];
778 SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
779
Tianjie Xuc4447322017-03-06 14:44:59 -0800780 if (argv.size() == 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800781 return StringValue(print_sha1(digest));
782 }
783
Tianjie Xuc4447322017-03-06 14:44:59 -0800784 for (size_t i = 1; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -0800785 uint8_t arg_digest[SHA_DIGEST_LENGTH];
786 if (args[i]->type != VAL_STRING) {
787 LOG(ERROR) << name << "(): arg " << i << " is not a string; skipping";
788 } else if (ParseSha1(args[i]->data.c_str(), arg_digest) != 0) {
789 // Warn about bad args and skip them.
790 LOG(ERROR) << name << "(): error parsing \"" << args[i]->data << "\" as sha-1; skipping";
791 } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
792 // Found a match.
793 return args[i].release();
794 }
795 }
796
797 // Didn't match any of the hex strings; return false.
798 return StringValue("");
Doug Zongker512536a2010-02-17 16:11:44 -0800799}
800
Hristo Bojinovdb314d62010-08-02 10:29:49 -0700801// Read a local file and return its contents (the Value* returned
Doug Zongker512536a2010-02-17 16:11:44 -0800802// is actually a FileContents*).
Tianjie Xuc4447322017-03-06 14:44:59 -0800803Value* ReadFileFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
804 if (argv.size() != 1) {
805 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800806 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700807
Tao Bao039f2da2016-11-22 16:29:50 -0800808 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800809 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800810 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
811 }
812 const std::string& filename = args[0];
Doug Zongker512536a2010-02-17 16:11:44 -0800813
Tao Bao039f2da2016-11-22 16:29:50 -0800814 Value* v = new Value(VAL_INVALID, "");
Doug Zongker512536a2010-02-17 16:11:44 -0800815
Tao Bao039f2da2016-11-22 16:29:50 -0800816 FileContents fc;
817 if (LoadFileContents(filename.c_str(), &fc) == 0) {
818 v->type = VAL_BLOB;
819 v->data = std::string(fc.data.begin(), fc.data.end());
820 }
821 return v;
Doug Zongker512536a2010-02-17 16:11:44 -0800822}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700823
Tao Baod0f30882016-11-03 23:52:01 -0700824// write_value(value, filename)
825// Writes 'value' to 'filename'.
826// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
Tianjie Xuc4447322017-03-06 14:44:59 -0800827Value* WriteValueFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
828 if (argv.size() != 2) {
829 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
830 argv.size());
Tao Baod0f30882016-11-03 23:52:01 -0700831 }
832
833 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800834 if (!ReadArgs(state, argv, &args)) {
Tao Baod0f30882016-11-03 23:52:01 -0700835 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
836 }
837
838 const std::string& filename = args[1];
839 if (filename.empty()) {
840 return ErrorAbort(state, kArgsParsingFailure, "%s(): Filename cannot be empty", name);
841 }
842
843 const std::string& value = args[0];
844 if (!android::base::WriteStringToFile(value, filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800845 PLOG(ERROR) << name << ": Failed to write to \"" << filename << "\"";
Tao Baod0f30882016-11-03 23:52:01 -0700846 return StringValue("");
847 } else {
848 return StringValue("t");
849 }
850}
851
Doug Zongkerc87bab12013-11-25 13:53:25 -0800852// Immediately reboot the device. Recovery is not finished normally,
853// so if you reboot into recovery it will re-start applying the
854// current package (because nothing has cleared the copy of the
855// arguments stored in the BCB).
856//
857// The argument is the partition name passed to the android reboot
858// property. It can be "recovery" to boot from the recovery
859// partition, or "" (empty string) to boot from the regular boot
860// partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800861Value* RebootNowFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
862 if (argv.size() != 2) {
863 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
864 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800865 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800866
Tao Baobedf5fc2016-11-18 12:01:26 -0800867 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800868 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800869 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
870 }
871 const std::string& filename = args[0];
872 const std::string& property = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800873
Tao Baobedf5fc2016-11-18 12:01:26 -0800874 // Zero out the 'command' field of the bootloader message. Leave the rest intact.
875 bootloader_message boot;
876 std::string err;
877 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800878 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800879 return StringValue("");
880 }
881 memset(boot.command, 0, sizeof(boot.command));
882 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800883 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800884 return StringValue("");
885 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800886
Dmitri Plotnikov8706a982017-04-18 08:28:26 -0700887 std::string reboot_cmd = "reboot," + property;
888 if (android::base::GetBoolProperty("ro.boot.quiescent", false)) {
889 reboot_cmd += ",quiescent";
890 }
Tao Baobedf5fc2016-11-18 12:01:26 -0800891 android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_cmd);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800892
Tao Baobedf5fc2016-11-18 12:01:26 -0800893 sleep(5);
894 return ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800895}
896
897// Store a string value somewhere that future invocations of recovery
898// can access it. This value is called the "stage" and can be used to
899// drive packages that need to do reboots in the middle of
900// installation and keep track of where they are in the multi-stage
901// install.
902//
903// The first argument is the block device for the misc partition
904// ("/misc" in the fstab), which is where this value is stored. The
905// second argument is the string to store; it should not exceed 31
906// bytes.
Tianjie Xuc4447322017-03-06 14:44:59 -0800907Value* SetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
908 if (argv.size() != 2) {
909 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
910 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800911 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800912
Tao Baobedf5fc2016-11-18 12:01:26 -0800913 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800914 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800915 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
916 }
917 const std::string& filename = args[0];
918 const std::string& stagestr = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800919
Tao Baobedf5fc2016-11-18 12:01:26 -0800920 // Store this value in the misc partition, immediately after the
921 // bootloader message that the main recovery uses to save its
922 // arguments in case of the device restarting midway through
923 // package installation.
924 bootloader_message boot;
925 std::string err;
926 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800927 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800928 return StringValue("");
929 }
930 strlcpy(boot.stage, stagestr.c_str(), sizeof(boot.stage));
931 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800932 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800933 return StringValue("");
934 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800935
Tao Baobedf5fc2016-11-18 12:01:26 -0800936 return StringValue(filename);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800937}
938
939// Return the value most recently saved with SetStageFn. The argument
940// is the block device for the misc partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800941Value* GetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
942 if (argv.size() != 1) {
943 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800944 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800945
Tao Baobedf5fc2016-11-18 12:01:26 -0800946 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800947 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800948 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
949 }
950 const std::string& filename = args[0];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800951
Tao Baobedf5fc2016-11-18 12:01:26 -0800952 bootloader_message boot;
953 std::string err;
954 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800955 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800956 return StringValue("");
957 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800958
Tao Baobedf5fc2016-11-18 12:01:26 -0800959 return StringValue(boot.stage);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800960}
961
Tianjie Xuc4447322017-03-06 14:44:59 -0800962Value* WipeBlockDeviceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
963 if (argv.size() != 2) {
964 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
965 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800966 }
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800967
Tao Bao358c2ec2016-11-28 11:48:43 -0800968 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800969 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800970 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
971 }
972 const std::string& filename = args[0];
973 const std::string& len_str = args[1];
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800974
Tao Bao358c2ec2016-11-28 11:48:43 -0800975 size_t len;
976 if (!android::base::ParseUint(len_str.c_str(), &len)) {
977 return nullptr;
978 }
979 unique_fd fd(ota_open(filename.c_str(), O_WRONLY, 0644));
980 // The wipe_block_device function in ext4_utils returns 0 on success and 1
981 // for failure.
982 int status = wipe_block_device(fd, len);
983 return StringValue((status == 0) ? "t" : "");
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800984}
985
Tianjie Xuc4447322017-03-06 14:44:59 -0800986Value* EnableRebootFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
987 if (!argv.empty()) {
988 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
989 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800990 }
991 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
992 fprintf(ui->cmd_pipe, "enable_reboot\n");
993 return StringValue("t");
Doug Zongkerc704e062014-05-23 08:40:35 -0700994}
995
Tianjie Xuc4447322017-03-06 14:44:59 -0800996Value* Tune2FsFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
997 if (argv.empty()) {
998 return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800999 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001000
Tao Bao039f2da2016-11-22 16:29:50 -08001001 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -08001002 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -08001003 return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
1004 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001005
Tianjie Xuc4447322017-03-06 14:44:59 -08001006 char* args2[argv.size() + 1];
Tao Bao039f2da2016-11-22 16:29:50 -08001007 // Tune2fs expects the program name as its args[0]
1008 args2[0] = const_cast<char*>(name);
1009 if (args2[0] == nullptr) {
1010 return nullptr;
1011 }
Tianjie Xuc4447322017-03-06 14:44:59 -08001012 for (size_t i = 0; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -08001013 args2[i + 1] = &args[i][0];
1014 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001015
Tao Bao039f2da2016-11-22 16:29:50 -08001016 // tune2fs changes the file system parameters on an ext2 file system; it
1017 // returns 0 on success.
Tianjie Xuc4447322017-03-06 14:44:59 -08001018 int result = tune2fs_main(argv.size() + 1, args2);
Tao Bao039f2da2016-11-22 16:29:50 -08001019 if (result != 0) {
1020 return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", name, result);
1021 }
1022 return StringValue("t");
Michael Rungeacf47db2014-11-21 00:12:28 -08001023}
1024
Doug Zongker9931f7f2009-06-10 14:11:53 -07001025void RegisterInstallFunctions() {
Tao Bao039f2da2016-11-22 16:29:50 -08001026 RegisterFunction("mount", MountFn);
1027 RegisterFunction("is_mounted", IsMountedFn);
1028 RegisterFunction("unmount", UnmountFn);
1029 RegisterFunction("format", FormatFn);
1030 RegisterFunction("show_progress", ShowProgressFn);
1031 RegisterFunction("set_progress", SetProgressFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001032 RegisterFunction("package_extract_file", PackageExtractFileFn);
Nick Kralevich5dbdef02013-09-07 14:41:06 -07001033
Tao Bao039f2da2016-11-22 16:29:50 -08001034 RegisterFunction("getprop", GetPropFn);
1035 RegisterFunction("file_getprop", FileGetPropFn);
Doug Zongker8edb00c2009-06-11 17:21:44 -07001036
Tao Bao039f2da2016-11-22 16:29:50 -08001037 RegisterFunction("apply_patch", ApplyPatchFn);
1038 RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
1039 RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
Doug Zongkerd9c9d102009-06-12 12:24:39 -07001040
Tao Bao039f2da2016-11-22 16:29:50 -08001041 RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
Doug Zongker52b40362014-02-10 15:30:30 -08001042
Tao Bao039f2da2016-11-22 16:29:50 -08001043 RegisterFunction("read_file", ReadFileFn);
1044 RegisterFunction("sha1_check", Sha1CheckFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001045 RegisterFunction("write_value", WriteValueFn);
Doug Zongker512536a2010-02-17 16:11:44 -08001046
Tao Bao039f2da2016-11-22 16:29:50 -08001047 RegisterFunction("wipe_cache", WipeCacheFn);
Doug Zongkerd0181b82011-10-19 10:51:12 -07001048
Tao Bao039f2da2016-11-22 16:29:50 -08001049 RegisterFunction("ui_print", UIPrintFn);
Doug Zongkera3f89ea2009-09-10 14:10:48 -07001050
Tao Bao039f2da2016-11-22 16:29:50 -08001051 RegisterFunction("run_program", RunProgramFn);
Doug Zongkerc87bab12013-11-25 13:53:25 -08001052
Tao Bao039f2da2016-11-22 16:29:50 -08001053 RegisterFunction("reboot_now", RebootNowFn);
1054 RegisterFunction("get_stage", GetStageFn);
1055 RegisterFunction("set_stage", SetStageFn);
Doug Zongkerc704e062014-05-23 08:40:35 -07001056
Tao Bao039f2da2016-11-22 16:29:50 -08001057 RegisterFunction("enable_reboot", EnableRebootFn);
1058 RegisterFunction("tune2fs", Tune2FsFn);
Doug Zongker9931f7f2009-06-10 14:11:53 -07001059}