blob: bfe91e7f9fa9ba86e674bbbb8423a5de3ebdfbed [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 Qianded2dac2017-04-21 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 Qianded2dac2017-04-21 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
Tao Bao338be532017-07-11 16:45:04 -0700325 const char* e2fsdroid_argv[] = { "/sbin/e2fsdroid_static", "-e", "-a", mount_point.c_str(),
Jin Qianded2dac2017-04-21 14:36:12 -0700326 location.c_str(), nullptr };
327 status = exec_cmd(e2fsdroid_argv[0], const_cast<char**>(e2fsdroid_argv));
328 if (status != 0) {
329 LOG(ERROR) << name << ": e2fsdroid failed (" << status << ") on " << location;
Tao Bao039f2da2016-11-22 16:29:50 -0800330 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700331 }
Tao Bao039f2da2016-11-22 16:29:50 -0800332 return StringValue(location);
333 } else if (fs_type == "f2fs") {
334 if (size < 0) {
335 LOG(ERROR) << name << ": fs_size can't be negative for f2fs: " << fs_size;
336 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700337 }
Tao Bao039f2da2016-11-22 16:29:50 -0800338 std::string num_sectors = std::to_string(size / 512);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700339
Tao Bao039f2da2016-11-22 16:29:50 -0800340 const char* f2fs_path = "/sbin/mkfs.f2fs";
Tao Bao397a8132017-05-12 11:02:27 -0700341 const char* f2fs_argv[] = {
342 "mkfs.f2fs", "-t", "-d1", location.c_str(), (size < 512) ? nullptr : num_sectors.c_str(),
343 nullptr
344 };
345 int status = exec_cmd(f2fs_path, const_cast<char**>(f2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800346 if (status != 0) {
347 LOG(ERROR) << name << ": mkfs.f2fs failed (" << status << ") on " << location;
348 return StringValue("");
349 }
350 return StringValue(location);
351 } else {
352 LOG(ERROR) << name << ": unsupported fs_type \"" << fs_type << "\" partition_type \""
353 << partition_type << "\"";
354 }
355
356 return nullptr;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700357}
358
Tianjie Xuc4447322017-03-06 14:44:59 -0800359Value* ShowProgressFn(const char* name, State* state,
360 const std::vector<std::unique_ptr<Expr>>& argv) {
361 if (argv.size() != 2) {
362 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
363 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800364 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700365
Tao Bao039f2da2016-11-22 16:29:50 -0800366 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800367 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800368 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
369 }
370 const std::string& frac_str = args[0];
371 const std::string& sec_str = args[1];
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 }
378 int sec;
379 if (!android::base::ParseInt(sec_str.c_str(), &sec)) {
380 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
381 sec_str.c_str());
382 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700383
Tao Bao039f2da2016-11-22 16:29:50 -0800384 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
385 fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700386
Tao Bao039f2da2016-11-22 16:29:50 -0800387 return StringValue(frac_str);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700388}
389
Tianjie Xuc4447322017-03-06 14:44:59 -0800390Value* SetProgressFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
391 if (argv.size() != 1) {
392 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800393 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700394
Tao Bao039f2da2016-11-22 16:29:50 -0800395 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800396 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800397 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
398 }
399 const std::string& frac_str = args[0];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700400
Tao Bao039f2da2016-11-22 16:29:50 -0800401 double frac;
402 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
403 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
404 frac_str.c_str());
405 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700406
Tao Bao039f2da2016-11-22 16:29:50 -0800407 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
408 fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700409
Tao Bao039f2da2016-11-22 16:29:50 -0800410 return StringValue(frac_str);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700411}
412
Tao Baoef0eb3b2016-11-14 21:29:52 -0800413// package_extract_file(package_file[, dest_file])
414// Extracts a single package_file from the update package and writes it to dest_file,
415// overwriting existing files if necessary. Without the dest_file argument, returns the
416// contents of the package file as a binary blob.
Tianjie Xuc4447322017-03-06 14:44:59 -0800417Value* PackageExtractFileFn(const char* name, State* state,
418 const std::vector<std::unique_ptr<Expr>>& argv) {
419 if (argv.size() < 1 || argv.size() > 2) {
420 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
421 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800422 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700423
Tianjie Xuc4447322017-03-06 14:44:59 -0800424 if (argv.size() == 2) {
Tao Baoef0eb3b2016-11-14 21:29:52 -0800425 // The two-argument version extracts to a file.
426
427 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800428 if (!ReadArgs(state, argv, &args)) {
429 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
430 argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700431 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800432 const std::string& zip_path = args[0];
433 const std::string& dest_path = args[1];
Doug Zongker43772d22014-06-09 14:13:19 -0700434
Tao Baoef0eb3b2016-11-14 21:29:52 -0800435 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
436 ZipString zip_string_path(zip_path.c_str());
437 ZipEntry entry;
438 if (FindEntry(za, zip_string_path, &entry) != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800439 LOG(ERROR) << name << ": no " << zip_path << " in package";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800440 return StringValue("");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700441 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800442
Tao Bao358c2ec2016-11-28 11:48:43 -0800443 unique_fd fd(TEMP_FAILURE_RETRY(
444 ota_open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
Tao Baoef0eb3b2016-11-14 21:29:52 -0800445 if (fd == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800446 PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800447 return StringValue("");
448 }
449
450 bool success = true;
451 int32_t ret = ExtractEntryToFile(za, &entry, fd);
452 if (ret != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800453 LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
454 << entry.uncompressed_length << " bytes) to \"" << dest_path
455 << "\": " << ErrorCodeString(ret);
Tao Baoef0eb3b2016-11-14 21:29:52 -0800456 success = false;
457 }
458 if (ota_fsync(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800459 PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800460 success = false;
461 }
462 if (ota_close(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800463 PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800464 success = false;
465 }
466
467 return StringValue(success ? "t" : "");
468 } else {
469 // The one-argument version returns the contents of the file as the result.
470
471 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800472 if (!ReadArgs(state, argv, &args)) {
473 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
474 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800475 }
476 const std::string& zip_path = args[0];
477
478 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
479 ZipString zip_string_path(zip_path.c_str());
480 ZipEntry entry;
481 if (FindEntry(za, zip_string_path, &entry) != 0) {
482 return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
483 zip_path.c_str());
484 }
485
486 std::string buffer;
487 buffer.resize(entry.uncompressed_length);
488
489 int32_t ret = ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
490 if (ret != 0) {
491 return ErrorAbort(state, kPackageExtractFileFailure,
492 "%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
493 zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
494 }
495
496 return new Value(VAL_BLOB, buffer);
497 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700498}
499
Tianjie Xuc4447322017-03-06 14:44:59 -0800500Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
501 if (argv.size() != 1) {
502 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800503 }
504 std::string key;
505 if (!Evaluate(state, argv[0], &key)) {
506 return nullptr;
507 }
508 std::string value = android::base::GetProperty(key, "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700509
Tao Bao039f2da2016-11-22 16:29:50 -0800510 return StringValue(value);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700511}
512
Doug Zongker47cace92009-06-18 10:11:50 -0700513// file_getprop(file, key)
514//
515// interprets 'file' as a getprop-style file (key=value pairs, one
Tao Bao51d516e2016-11-03 14:49:01 -0700516// per line. # comment lines, blank lines, lines without '=' ignored),
Michael Rungeaa1a31e2014-04-25 18:47:18 -0700517// and returns the value for 'key' (or "" if it isn't defined).
Tianjie Xuc4447322017-03-06 14:44:59 -0800518Value* FileGetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
519 if (argv.size() != 2) {
520 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
521 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800522 }
523
524 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800525 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800526 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
527 }
528 const std::string& filename = args[0];
529 const std::string& key = args[1];
530
531 struct stat st;
532 if (stat(filename.c_str(), &st) < 0) {
533 return ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name,
534 filename.c_str(), strerror(errno));
535 }
536
537 constexpr off_t MAX_FILE_GETPROP_SIZE = 65536;
538 if (st.st_size > MAX_FILE_GETPROP_SIZE) {
539 return ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %lld)",
540 filename.c_str(), name, static_cast<long long>(MAX_FILE_GETPROP_SIZE));
541 }
542
543 std::string buffer(st.st_size, '\0');
544 unique_file f(ota_fopen(filename.c_str(), "rb"));
545 if (f == nullptr) {
546 return ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename.c_str(),
547 strerror(errno));
548 }
549
550 if (ota_fread(&buffer[0], 1, st.st_size, f.get()) != static_cast<size_t>(st.st_size)) {
551 ErrorAbort(state, kFreadFailure, "%s: failed to read %zu bytes from %s", name,
552 static_cast<size_t>(st.st_size), filename.c_str());
553 return nullptr;
554 }
555
556 ota_fclose(f);
557
558 std::vector<std::string> lines = android::base::Split(buffer, "\n");
559 for (size_t i = 0; i < lines.size(); i++) {
560 std::string line = android::base::Trim(lines[i]);
561
562 // comment or blank line: skip to next line
563 if (line.empty() || line[0] == '#') {
564 continue;
565 }
566 size_t equal_pos = line.find('=');
567 if (equal_pos == std::string::npos) {
568 continue;
Tao Bao51d516e2016-11-03 14:49:01 -0700569 }
570
Tao Bao358c2ec2016-11-28 11:48:43 -0800571 // trim whitespace between key and '='
572 std::string str = android::base::Trim(line.substr(0, equal_pos));
Doug Zongker47cace92009-06-18 10:11:50 -0700573
Tao Bao358c2ec2016-11-28 11:48:43 -0800574 // not the key we're looking for
575 if (key != str) continue;
Doug Zongker47cace92009-06-18 10:11:50 -0700576
Tao Bao358c2ec2016-11-28 11:48:43 -0800577 return StringValue(android::base::Trim(line.substr(equal_pos + 1)));
578 }
Doug Zongker47cace92009-06-18 10:11:50 -0700579
Tao Bao358c2ec2016-11-28 11:48:43 -0800580 return StringValue("");
Doug Zongker47cace92009-06-18 10:11:50 -0700581}
582
Doug Zongker8edb00c2009-06-11 17:21:44 -0700583// apply_patch_space(bytes)
Tianjie Xuc4447322017-03-06 14:44:59 -0800584Value* ApplyPatchSpaceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
585 if (argv.size() != 1) {
586 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 args, got %zu", name,
587 argv.size());
588 }
Tao Bao039f2da2016-11-22 16:29:50 -0800589 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800590 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800591 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
592 }
593 const std::string& bytes_str = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800594
Tao Bao039f2da2016-11-22 16:29:50 -0800595 size_t bytes;
596 if (!android::base::ParseUint(bytes_str.c_str(), &bytes)) {
597 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count\n\n",
598 name, bytes_str.c_str());
599 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800600
Tao Bao039f2da2016-11-22 16:29:50 -0800601 return StringValue(CacheSizeCheck(bytes) ? "" : "t");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800602}
603
Tao Bao039f2da2016-11-22 16:29:50 -0800604// apply_patch(src_file, tgt_file, tgt_sha1, tgt_size, patch1_sha1, patch1_blob, [...])
605// Applies a binary patch to the src_file to produce the tgt_file. If the desired target is the
606// same as the source, pass "-" for tgt_file. tgt_sha1 and tgt_size are the expected final SHA1
607// hash and size of the target file. The remaining arguments must come in pairs: a SHA1 hash (a
608// 40-character hex string) and a blob. The blob is the patch to be applied when the source
609// file's current contents have the given SHA1.
610//
611// The patching is done in a safe manner that guarantees the target file either has the desired
612// SHA1 hash and size, or it is untouched -- it will not be left in an unrecoverable intermediate
613// state. If the process is interrupted during patching, the target file may be in an intermediate
614// state; a copy exists in the cache partition so restarting the update can successfully update
615// the file.
Tianjie Xuc4447322017-03-06 14:44:59 -0800616Value* ApplyPatchFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
617 if (argv.size() < 6 || (argv.size() % 2) == 1) {
Tianjie Xu16255832016-04-30 11:49:59 -0700618 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 6 args and an "
Tianjie Xuc4447322017-03-06 14:44:59 -0800619 "even number, got %zu", name, argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700620 }
621
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700622 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800623 if (!ReadArgs(state, argv, &args, 0, 4)) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700624 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700625 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700626 const std::string& source_filename = args[0];
627 const std::string& target_filename = args[1];
628 const std::string& target_sha1 = args[2];
629 const std::string& target_size_str = args[3];
Doug Zongker8edb00c2009-06-11 17:21:44 -0700630
Tao Baob15fd222015-09-24 11:10:51 -0700631 size_t target_size;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700632 if (!android::base::ParseUint(target_size_str.c_str(), &target_size)) {
633 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count",
634 name, target_size_str.c_str());
Doug Zongkerc4351c72010-02-22 14:46:32 -0800635 }
636
Tianjie Xuc4447322017-03-06 14:44:59 -0800637 int patchcount = (argv.size()-4) / 2;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700638 std::vector<std::unique_ptr<Value>> arg_values;
Tianjie Xuc4447322017-03-06 14:44:59 -0800639 if (!ReadValueArgs(state, argv, &arg_values, 4, argv.size() - 4)) {
Yabin Cui64be2132016-02-03 18:16:02 -0800640 return nullptr;
641 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700642
Yabin Cui64be2132016-02-03 18:16:02 -0800643 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700644 if (arg_values[i * 2]->type != VAL_STRING) {
645 return ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name,
646 i * 2);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800647 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700648 if (arg_values[i * 2 + 1]->type != VAL_BLOB) {
649 return ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name,
650 i * 2 + 1);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800651 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700652 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700653
Tianjie Xuaced5d92016-10-12 10:55:04 -0700654 std::vector<std::string> patch_sha_str;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700655 std::vector<std::unique_ptr<Value>> patches;
Yabin Cui64be2132016-02-03 18:16:02 -0800656 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700657 patch_sha_str.push_back(arg_values[i * 2]->data);
658 patches.push_back(std::move(arg_values[i * 2 + 1]));
Doug Zongker8edb00c2009-06-11 17:21:44 -0700659 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800660
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700661 int result = applypatch(source_filename.c_str(), target_filename.c_str(),
662 target_sha1.c_str(), target_size,
663 patch_sha_str, patches, nullptr);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800664
Tianjie Xuaced5d92016-10-12 10:55:04 -0700665 return StringValue(result == 0 ? "t" : "");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800666}
667
Tao Bao039f2da2016-11-22 16:29:50 -0800668// apply_patch_check(filename, [sha1, ...])
669// Returns true if the contents of filename or the temporary copy in the cache partition (if
670// present) have a SHA-1 checksum equal to one of the given sha1 values. sha1 values are
671// specified as 40 hex digits. This function differs from sha1_check(read_file(filename),
672// sha1 [, ...]) in that it knows to check the cache partition copy, so apply_patch_check() will
673// succeed even if the file was corrupted by an interrupted apply_patch() update.
Tianjie Xuc4447322017-03-06 14:44:59 -0800674Value* ApplyPatchCheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
675 if (argv.size() < 1) {
676 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %zu", name,
677 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800678 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800679
Tao Bao039f2da2016-11-22 16:29:50 -0800680 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800681 if (!ReadArgs(state, argv, &args, 0, 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800682 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
683 }
684 const std::string& filename = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800685
Tao Bao039f2da2016-11-22 16:29:50 -0800686 std::vector<std::string> sha1s;
Tao Baodb56eb02017-03-23 06:34:20 -0700687 if (argv.size() > 1 && !ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800688 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
689 }
690 int result = applypatch_check(filename.c_str(), sha1s);
Tianjie Xuaced5d92016-10-12 10:55:04 -0700691
Tao Bao039f2da2016-11-22 16:29:50 -0800692 return StringValue(result == 0 ? "t" : "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700693}
694
Tao Bao0bbc7642017-03-29 23:57:47 -0700695// This is the updater side handler for ui_print() in edify script. Contents will be sent over to
696// the recovery side for on-screen display.
Tianjie Xuc4447322017-03-06 14:44:59 -0800697Value* UIPrintFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
Tao Bao039f2da2016-11-22 16:29:50 -0800698 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800699 if (!ReadArgs(state, argv, &args)) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700700 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
Tao Bao039f2da2016-11-22 16:29:50 -0800701 }
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700702
Tao Bao0bbc7642017-03-29 23:57:47 -0700703 std::string buffer = android::base::Join(args, "");
Tao Bao039f2da2016-11-22 16:29:50 -0800704 uiPrint(state, buffer);
705 return StringValue(buffer);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700706}
707
Tianjie Xuc4447322017-03-06 14:44:59 -0800708Value* WipeCacheFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
709 if (!argv.empty()) {
710 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
711 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800712 }
713 fprintf(static_cast<UpdaterInfo*>(state->cookie)->cmd_pipe, "wipe_cache\n");
714 return StringValue("t");
Doug Zongkerd0181b82011-10-19 10:51:12 -0700715}
716
Tianjie Xuc4447322017-03-06 14:44:59 -0800717Value* RunProgramFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
718 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800719 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
720 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700721
Tao Bao039f2da2016-11-22 16:29:50 -0800722 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800723 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800724 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
725 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700726
Tianjie Xuc4447322017-03-06 14:44:59 -0800727 char* args2[argv.size() + 1];
728 for (size_t i = 0; i < argv.size(); i++) {
Tao Bao039f2da2016-11-22 16:29:50 -0800729 args2[i] = &args[i][0];
730 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800731 args2[argv.size()] = nullptr;
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700732
Tianjie Xuc4447322017-03-06 14:44:59 -0800733 LOG(INFO) << "about to run program [" << args2[0] << "] with " << argv.size() << " args";
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700734
Tao Bao039f2da2016-11-22 16:29:50 -0800735 pid_t child = fork();
736 if (child == 0) {
737 execv(args2[0], args2);
738 PLOG(ERROR) << "run_program: execv failed";
Tao Bao3da88012017-02-03 13:09:23 -0800739 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800740 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700741
Tao Bao039f2da2016-11-22 16:29:50 -0800742 int status;
743 waitpid(child, &status, 0);
744 if (WIFEXITED(status)) {
745 if (WEXITSTATUS(status) != 0) {
746 LOG(ERROR) << "run_program: child exited with status " << WEXITSTATUS(status);
747 }
748 } else if (WIFSIGNALED(status)) {
749 LOG(ERROR) << "run_program: child terminated by signal " << WTERMSIG(status);
750 }
751
752 return StringValue(std::to_string(status));
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700753}
754
Doug Zongker512536a2010-02-17 16:11:44 -0800755// sha1_check(data)
756// to return the sha1 of the data (given in the format returned by
757// read_file).
758//
759// sha1_check(data, sha1_hex, [sha1_hex, ...])
760// returns the sha1 of the file if it matches any of the hex
761// strings passed, or "" if it does not equal any of them.
762//
Tianjie Xuc4447322017-03-06 14:44:59 -0800763Value* Sha1CheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
764 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800765 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
766 }
Doug Zongker512536a2010-02-17 16:11:44 -0800767
Tao Bao039f2da2016-11-22 16:29:50 -0800768 std::vector<std::unique_ptr<Value>> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800769 if (!ReadValueArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800770 return nullptr;
771 }
Doug Zongker512536a2010-02-17 16:11:44 -0800772
Tao Bao039f2da2016-11-22 16:29:50 -0800773 if (args[0]->type == VAL_INVALID) {
Tianjie Xuaced5d92016-10-12 10:55:04 -0700774 return StringValue("");
Tao Bao039f2da2016-11-22 16:29:50 -0800775 }
776 uint8_t digest[SHA_DIGEST_LENGTH];
777 SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
778
Tianjie Xuc4447322017-03-06 14:44:59 -0800779 if (argv.size() == 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800780 return StringValue(print_sha1(digest));
781 }
782
Tianjie Xuc4447322017-03-06 14:44:59 -0800783 for (size_t i = 1; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -0800784 uint8_t arg_digest[SHA_DIGEST_LENGTH];
785 if (args[i]->type != VAL_STRING) {
786 LOG(ERROR) << name << "(): arg " << i << " is not a string; skipping";
787 } else if (ParseSha1(args[i]->data.c_str(), arg_digest) != 0) {
788 // Warn about bad args and skip them.
789 LOG(ERROR) << name << "(): error parsing \"" << args[i]->data << "\" as sha-1; skipping";
790 } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
791 // Found a match.
792 return args[i].release();
793 }
794 }
795
796 // Didn't match any of the hex strings; return false.
797 return StringValue("");
Doug Zongker512536a2010-02-17 16:11:44 -0800798}
799
Hristo Bojinovdb314d62010-08-02 10:29:49 -0700800// Read a local file and return its contents (the Value* returned
Doug Zongker512536a2010-02-17 16:11:44 -0800801// is actually a FileContents*).
Tianjie Xuc4447322017-03-06 14:44:59 -0800802Value* ReadFileFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
803 if (argv.size() != 1) {
804 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800805 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700806
Tao Bao039f2da2016-11-22 16:29:50 -0800807 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800808 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800809 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
810 }
811 const std::string& filename = args[0];
Doug Zongker512536a2010-02-17 16:11:44 -0800812
Tao Bao039f2da2016-11-22 16:29:50 -0800813 Value* v = new Value(VAL_INVALID, "");
Doug Zongker512536a2010-02-17 16:11:44 -0800814
Tao Bao039f2da2016-11-22 16:29:50 -0800815 FileContents fc;
816 if (LoadFileContents(filename.c_str(), &fc) == 0) {
817 v->type = VAL_BLOB;
818 v->data = std::string(fc.data.begin(), fc.data.end());
819 }
820 return v;
Doug Zongker512536a2010-02-17 16:11:44 -0800821}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700822
Tao Baod0f30882016-11-03 23:52:01 -0700823// write_value(value, filename)
824// Writes 'value' to 'filename'.
825// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
Tianjie Xuc4447322017-03-06 14:44:59 -0800826Value* WriteValueFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
827 if (argv.size() != 2) {
828 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
829 argv.size());
Tao Baod0f30882016-11-03 23:52:01 -0700830 }
831
832 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800833 if (!ReadArgs(state, argv, &args)) {
Tao Baod0f30882016-11-03 23:52:01 -0700834 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
835 }
836
837 const std::string& filename = args[1];
838 if (filename.empty()) {
839 return ErrorAbort(state, kArgsParsingFailure, "%s(): Filename cannot be empty", name);
840 }
841
842 const std::string& value = args[0];
843 if (!android::base::WriteStringToFile(value, filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800844 PLOG(ERROR) << name << ": Failed to write to \"" << filename << "\"";
Tao Baod0f30882016-11-03 23:52:01 -0700845 return StringValue("");
846 } else {
847 return StringValue("t");
848 }
849}
850
Doug Zongkerc87bab12013-11-25 13:53:25 -0800851// Immediately reboot the device. Recovery is not finished normally,
852// so if you reboot into recovery it will re-start applying the
853// current package (because nothing has cleared the copy of the
854// arguments stored in the BCB).
855//
856// The argument is the partition name passed to the android reboot
857// property. It can be "recovery" to boot from the recovery
858// partition, or "" (empty string) to boot from the regular boot
859// partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800860Value* RebootNowFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
861 if (argv.size() != 2) {
862 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
863 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800864 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800865
Tao Baobedf5fc2016-11-18 12:01:26 -0800866 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800867 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800868 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
869 }
870 const std::string& filename = args[0];
871 const std::string& property = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800872
Tao Baobedf5fc2016-11-18 12:01:26 -0800873 // Zero out the 'command' field of the bootloader message. Leave the rest intact.
874 bootloader_message boot;
875 std::string err;
876 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800877 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800878 return StringValue("");
879 }
880 memset(boot.command, 0, sizeof(boot.command));
881 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800882 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800883 return StringValue("");
884 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800885
Dmitri Plotnikov8706a982017-04-18 08:28:26 -0700886 std::string reboot_cmd = "reboot," + property;
887 if (android::base::GetBoolProperty("ro.boot.quiescent", false)) {
888 reboot_cmd += ",quiescent";
889 }
Tao Baobedf5fc2016-11-18 12:01:26 -0800890 android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_cmd);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800891
Tao Baobedf5fc2016-11-18 12:01:26 -0800892 sleep(5);
893 return ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800894}
895
896// Store a string value somewhere that future invocations of recovery
897// can access it. This value is called the "stage" and can be used to
898// drive packages that need to do reboots in the middle of
899// installation and keep track of where they are in the multi-stage
900// install.
901//
902// The first argument is the block device for the misc partition
903// ("/misc" in the fstab), which is where this value is stored. The
904// second argument is the string to store; it should not exceed 31
905// bytes.
Tianjie Xuc4447322017-03-06 14:44:59 -0800906Value* SetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
907 if (argv.size() != 2) {
908 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
909 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800910 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800911
Tao Baobedf5fc2016-11-18 12:01:26 -0800912 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800913 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800914 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
915 }
916 const std::string& filename = args[0];
917 const std::string& stagestr = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800918
Tao Baobedf5fc2016-11-18 12:01:26 -0800919 // Store this value in the misc partition, immediately after the
920 // bootloader message that the main recovery uses to save its
921 // arguments in case of the device restarting midway through
922 // package installation.
923 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 }
929 strlcpy(boot.stage, stagestr.c_str(), sizeof(boot.stage));
930 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800931 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800932 return StringValue("");
933 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800934
Tao Baobedf5fc2016-11-18 12:01:26 -0800935 return StringValue(filename);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800936}
937
938// Return the value most recently saved with SetStageFn. The argument
939// is the block device for the misc partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800940Value* GetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
941 if (argv.size() != 1) {
942 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800943 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800944
Tao Baobedf5fc2016-11-18 12:01:26 -0800945 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800946 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800947 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
948 }
949 const std::string& filename = args[0];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800950
Tao Baobedf5fc2016-11-18 12:01:26 -0800951 bootloader_message boot;
952 std::string err;
953 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800954 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800955 return StringValue("");
956 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800957
Tao Baobedf5fc2016-11-18 12:01:26 -0800958 return StringValue(boot.stage);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800959}
960
Tianjie Xuc4447322017-03-06 14:44:59 -0800961Value* WipeBlockDeviceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
962 if (argv.size() != 2) {
963 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
964 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800965 }
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800966
Tao Bao358c2ec2016-11-28 11:48:43 -0800967 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800968 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800969 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
970 }
971 const std::string& filename = args[0];
972 const std::string& len_str = args[1];
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800973
Tao Bao358c2ec2016-11-28 11:48:43 -0800974 size_t len;
975 if (!android::base::ParseUint(len_str.c_str(), &len)) {
976 return nullptr;
977 }
978 unique_fd fd(ota_open(filename.c_str(), O_WRONLY, 0644));
979 // The wipe_block_device function in ext4_utils returns 0 on success and 1
980 // for failure.
981 int status = wipe_block_device(fd, len);
982 return StringValue((status == 0) ? "t" : "");
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800983}
984
Tianjie Xuc4447322017-03-06 14:44:59 -0800985Value* EnableRebootFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
986 if (!argv.empty()) {
987 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
988 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800989 }
990 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
991 fprintf(ui->cmd_pipe, "enable_reboot\n");
992 return StringValue("t");
Doug Zongkerc704e062014-05-23 08:40:35 -0700993}
994
Tianjie Xuc4447322017-03-06 14:44:59 -0800995Value* Tune2FsFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
996 if (argv.empty()) {
997 return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800998 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800999
Tao Bao039f2da2016-11-22 16:29:50 -08001000 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -08001001 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -08001002 return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
1003 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001004
Tianjie Xuc4447322017-03-06 14:44:59 -08001005 char* args2[argv.size() + 1];
Tao Bao039f2da2016-11-22 16:29:50 -08001006 // Tune2fs expects the program name as its args[0]
1007 args2[0] = const_cast<char*>(name);
1008 if (args2[0] == nullptr) {
1009 return nullptr;
1010 }
Tianjie Xuc4447322017-03-06 14:44:59 -08001011 for (size_t i = 0; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -08001012 args2[i + 1] = &args[i][0];
1013 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001014
Tao Bao039f2da2016-11-22 16:29:50 -08001015 // tune2fs changes the file system parameters on an ext2 file system; it
1016 // returns 0 on success.
Tianjie Xuc4447322017-03-06 14:44:59 -08001017 int result = tune2fs_main(argv.size() + 1, args2);
Tao Bao039f2da2016-11-22 16:29:50 -08001018 if (result != 0) {
1019 return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", name, result);
1020 }
1021 return StringValue("t");
Michael Rungeacf47db2014-11-21 00:12:28 -08001022}
1023
Doug Zongker9931f7f2009-06-10 14:11:53 -07001024void RegisterInstallFunctions() {
Tao Bao039f2da2016-11-22 16:29:50 -08001025 RegisterFunction("mount", MountFn);
1026 RegisterFunction("is_mounted", IsMountedFn);
1027 RegisterFunction("unmount", UnmountFn);
1028 RegisterFunction("format", FormatFn);
1029 RegisterFunction("show_progress", ShowProgressFn);
1030 RegisterFunction("set_progress", SetProgressFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001031 RegisterFunction("package_extract_file", PackageExtractFileFn);
Nick Kralevich5dbdef02013-09-07 14:41:06 -07001032
Tao Bao039f2da2016-11-22 16:29:50 -08001033 RegisterFunction("getprop", GetPropFn);
1034 RegisterFunction("file_getprop", FileGetPropFn);
Doug Zongker8edb00c2009-06-11 17:21:44 -07001035
Tao Bao039f2da2016-11-22 16:29:50 -08001036 RegisterFunction("apply_patch", ApplyPatchFn);
1037 RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
1038 RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
Doug Zongkerd9c9d102009-06-12 12:24:39 -07001039
Tao Bao039f2da2016-11-22 16:29:50 -08001040 RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
Doug Zongker52b40362014-02-10 15:30:30 -08001041
Tao Bao039f2da2016-11-22 16:29:50 -08001042 RegisterFunction("read_file", ReadFileFn);
1043 RegisterFunction("sha1_check", Sha1CheckFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001044 RegisterFunction("write_value", WriteValueFn);
Doug Zongker512536a2010-02-17 16:11:44 -08001045
Tao Bao039f2da2016-11-22 16:29:50 -08001046 RegisterFunction("wipe_cache", WipeCacheFn);
Doug Zongkerd0181b82011-10-19 10:51:12 -07001047
Tao Bao039f2da2016-11-22 16:29:50 -08001048 RegisterFunction("ui_print", UIPrintFn);
Doug Zongkera3f89ea2009-09-10 14:10:48 -07001049
Tao Bao039f2da2016-11-22 16:29:50 -08001050 RegisterFunction("run_program", RunProgramFn);
Doug Zongkerc87bab12013-11-25 13:53:25 -08001051
Tao Bao039f2da2016-11-22 16:29:50 -08001052 RegisterFunction("reboot_now", RebootNowFn);
1053 RegisterFunction("get_stage", GetStageFn);
1054 RegisterFunction("set_stage", SetStageFn);
Doug Zongkerc704e062014-05-23 08:40:35 -07001055
Tao Bao039f2da2016-11-22 16:29:50 -08001056 RegisterFunction("enable_reboot", EnableRebootFn);
1057 RegisterFunction("tune2fs", Tune2FsFn);
Doug Zongker9931f7f2009-06-10 14:11:53 -07001058}