blob: 857d7f1e04015dbe3a036773532272e59b3a5cc5 [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"
64#include "otautil/ZipUtil.h"
Tao Bao361342c2016-02-08 11:15:50 -080065#include "print_sha1.h"
Michael Rungeacf47db2014-11-21 00:12:28 -080066#include "tune2fs.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070067#include "updater/updater.h"
Doug Zongker8edb00c2009-06-11 17:21:44 -070068
Tao Bao1107d962015-09-09 17:16:55 -070069// Send over the buffer to recovery though the command pipe.
70static void uiPrint(State* state, const std::string& buffer) {
Tao Bao039f2da2016-11-22 16:29:50 -080071 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
Tao Baob6918c72015-05-19 17:02:16 -070072
Tao Bao039f2da2016-11-22 16:29:50 -080073 // "line1\nline2\n" will be split into 3 tokens: "line1", "line2" and "".
74 // So skip sending empty strings to UI.
75 std::vector<std::string> lines = android::base::Split(buffer, "\n");
76 for (auto& line : lines) {
77 if (!line.empty()) {
78 fprintf(ui->cmd_pipe, "ui_print %s\n", line.c_str());
Tao Bao1107d962015-09-09 17:16:55 -070079 }
Tao Bao039f2da2016-11-22 16:29:50 -080080 }
Tao Bao1107d962015-09-09 17:16:55 -070081
Tao Bao039f2da2016-11-22 16:29:50 -080082 // On the updater side, we need to dump the contents to stderr (which has
83 // been redirected to the log file). Because the recovery will only print
84 // the contents to screen when processing pipe command ui_print.
85 LOG(INFO) << buffer;
Michael Runged4a63422014-10-22 19:48:41 -070086}
87
Elliott Hughes83ce7552016-06-30 09:28:42 -070088void uiPrintf(State* _Nonnull state, const char* _Nonnull format, ...) {
Tao Bao039f2da2016-11-22 16:29:50 -080089 std::string error_msg;
Tao Bao1107d962015-09-09 17:16:55 -070090
Tao Bao039f2da2016-11-22 16:29:50 -080091 va_list ap;
92 va_start(ap, format);
93 android::base::StringAppendV(&error_msg, format, ap);
94 va_end(ap);
Tao Bao1107d962015-09-09 17:16:55 -070095
Tao Bao039f2da2016-11-22 16:29:50 -080096 uiPrint(state, error_msg);
Michael Runged4a63422014-10-22 19:48:41 -070097}
98
Tianjie Xud75003d2016-11-04 11:31:29 -070099static bool is_dir(const std::string& dirpath) {
100 struct stat st;
101 return stat(dirpath.c_str(), &st) == 0 && S_ISDIR(st.st_mode);
102}
103
Tao Bao0c7839a2016-10-10 15:48:37 -0700104// Create all parent directories of name, if necessary.
Tianjie Xud75003d2016-11-04 11:31:29 -0700105static bool make_parents(const std::string& name) {
Tao Bao039f2da2016-11-22 16:29:50 -0800106 size_t prev_end = 0;
107 while (prev_end < name.size()) {
108 size_t next_end = name.find('/', prev_end + 1);
109 if (next_end == std::string::npos) {
110 break;
Tao Bao0c7839a2016-10-10 15:48:37 -0700111 }
Tao Bao039f2da2016-11-22 16:29:50 -0800112 std::string dir_path = name.substr(0, next_end);
113 if (!is_dir(dir_path)) {
114 int result = mkdir(dir_path.c_str(), 0700);
115 if (result != 0) {
116 PLOG(ERROR) << "failed to mkdir " << dir_path << " when make parents for " << name;
117 return false;
118 }
119
120 LOG(INFO) << "created [" << dir_path << "]";
121 }
122 prev_end = next_end;
123 }
124 return true;
Tao Bao0c7839a2016-10-10 15:48:37 -0700125}
126
Doug Zongker3d177d02010-07-01 09:18:44 -0700127// mount(fs_type, partition_type, location, mount_point)
Tao Bao0831d0b2016-11-03 23:25:04 -0700128// mount(fs_type, partition_type, location, mount_point, mount_options)
Tianjie Xuc4447322017-03-06 14:44:59 -0800129
Doug Zongker3d177d02010-07-01 09:18:44 -0700130// fs_type="ext4" partition_type="EMMC" location=device
Tianjie Xuc4447322017-03-06 14:44:59 -0800131Value* MountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
132 if (argv.size() != 4 && argv.size() != 5) {
133 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %zu", name,
134 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800135 }
136
137 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800138 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800139 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
140 }
141 const std::string& fs_type = args[0];
142 const std::string& partition_type = args[1];
143 const std::string& location = args[2];
144 const std::string& mount_point = args[3];
145 std::string mount_options;
146
Tianjie Xuc4447322017-03-06 14:44:59 -0800147 if (argv.size() == 5) {
Tao Bao039f2da2016-11-22 16:29:50 -0800148 mount_options = args[4];
149 }
150
151 if (fs_type.empty()) {
152 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
153 }
154 if (partition_type.empty()) {
155 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
156 name);
157 }
158 if (location.empty()) {
159 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
160 }
161 if (mount_point.empty()) {
162 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
163 name);
164 }
165
166 {
167 char* secontext = nullptr;
168
169 if (sehandle) {
170 selabel_lookup(sehandle, &secontext, mount_point.c_str(), 0755);
171 setfscreatecon(secontext);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700172 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700173
Tao Bao039f2da2016-11-22 16:29:50 -0800174 mkdir(mount_point.c_str(), 0755);
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700175
Tao Bao039f2da2016-11-22 16:29:50 -0800176 if (secontext) {
177 freecon(secontext);
178 setfscreatecon(nullptr);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700179 }
Tao Bao039f2da2016-11-22 16:29:50 -0800180 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700181
Tao Bao039f2da2016-11-22 16:29:50 -0800182 if (mount(location.c_str(), mount_point.c_str(), fs_type.c_str(),
183 MS_NOATIME | MS_NODEV | MS_NODIRATIME, mount_options.c_str()) < 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700184 uiPrintf(state, "%s: Failed to mount %s at %s: %s", name, location.c_str(), mount_point.c_str(),
185 strerror(errno));
Tao Bao039f2da2016-11-22 16:29:50 -0800186 return StringValue("");
187 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700188
Tao Bao039f2da2016-11-22 16:29:50 -0800189 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700190}
191
Doug Zongker8edb00c2009-06-11 17:21:44 -0700192// is_mounted(mount_point)
Tianjie Xuc4447322017-03-06 14:44:59 -0800193Value* IsMountedFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
194 if (argv.size() != 1) {
195 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800196 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700197
Tao Bao039f2da2016-11-22 16:29:50 -0800198 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800199 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800200 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
201 }
202 const std::string& mount_point = args[0];
203 if (mount_point.empty()) {
204 return ErrorAbort(state, kArgsParsingFailure,
205 "mount_point argument to unmount() can't be empty");
206 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700207
Tao Bao039f2da2016-11-22 16:29:50 -0800208 scan_mounted_volumes();
209 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
210 if (vol == nullptr) {
211 return StringValue("");
212 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700213
Tao Bao039f2da2016-11-22 16:29:50 -0800214 return StringValue(mount_point);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700215}
216
Tianjie Xuc4447322017-03-06 14:44:59 -0800217Value* UnmountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
218 if (argv.size() != 1) {
219 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800220 }
221 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800222 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800223 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
224 }
225 const std::string& mount_point = args[0];
226 if (mount_point.empty()) {
227 return ErrorAbort(state, kArgsParsingFailure,
228 "mount_point argument to unmount() can't be empty");
229 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700230
Tao Bao039f2da2016-11-22 16:29:50 -0800231 scan_mounted_volumes();
232 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
233 if (vol == nullptr) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700234 uiPrintf(state, "Failed to unmount %s: No such volume", mount_point.c_str());
Tao Bao039f2da2016-11-22 16:29:50 -0800235 return nullptr;
236 } else {
237 int ret = unmount_mounted_volume(vol);
238 if (ret != 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700239 uiPrintf(state, "Failed to unmount %s: %s", mount_point.c_str(), strerror(errno));
Doug Zongker9931f7f2009-06-10 14:11:53 -0700240 }
Tao Bao039f2da2016-11-22 16:29:50 -0800241 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700242
Tao Bao039f2da2016-11-22 16:29:50 -0800243 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700244}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700245
JP Abgrall37aedb32014-06-16 19:07:39 -0700246static int exec_cmd(const char* path, char* const argv[]) {
Tao Bao039f2da2016-11-22 16:29:50 -0800247 pid_t child;
248 if ((child = vfork()) == 0) {
249 execv(path, argv);
Tao Bao3da88012017-02-03 13:09:23 -0800250 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800251 }
252
253 int status;
254 waitpid(child, &status, 0);
255 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
256 LOG(ERROR) << path << " failed with status " << WEXITSTATUS(status);
257 }
258 return WEXITSTATUS(status);
JP Abgrall37aedb32014-06-16 19:07:39 -0700259}
260
Stephen Smalley779701d2012-02-09 14:13:23 -0500261// format(fs_type, partition_type, location, fs_size, mount_point)
Doug Zongker9931f7f2009-06-10 14:11:53 -0700262//
Tao Bao039f2da2016-11-22 16:29:50 -0800263// fs_type="ext4" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
264// fs_type="f2fs" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
JP Abgrall37aedb32014-06-16 19:07:39 -0700265// if fs_size == 0, then make fs uses the entire partition.
Ken Sumrall8f132ed2011-01-14 18:55:05 -0800266// if fs_size > 0, that is the size to use
JP Abgrall37aedb32014-06-16 19:07:39 -0700267// 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 -0800268Value* FormatFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
269 if (argv.size() != 5) {
270 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %zu", name,
271 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800272 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500273
Tao Bao039f2da2016-11-22 16:29:50 -0800274 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800275 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800276 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
277 }
278 const std::string& fs_type = args[0];
279 const std::string& partition_type = args[1];
280 const std::string& location = args[2];
281 const std::string& fs_size = args[3];
282 const std::string& mount_point = args[4];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700283
Tao Bao039f2da2016-11-22 16:29:50 -0800284 if (fs_type.empty()) {
285 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
286 }
287 if (partition_type.empty()) {
288 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
289 name);
290 }
291 if (location.empty()) {
292 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
293 }
294 if (mount_point.empty()) {
295 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
296 name);
297 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700298
Tao Bao039f2da2016-11-22 16:29:50 -0800299 int64_t size;
300 if (!android::base::ParseInt(fs_size, &size)) {
301 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
302 fs_size.c_str());
303 }
304
305 if (fs_type == "ext4") {
306 int status = make_ext4fs(location.c_str(), size, mount_point.c_str(), sehandle);
307 if (status != 0) {
308 LOG(ERROR) << name << ": make_ext4fs failed (" << status << ") on " << location;
309 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700310 }
Tao Bao039f2da2016-11-22 16:29:50 -0800311 return StringValue(location);
312 } else if (fs_type == "f2fs") {
313 if (size < 0) {
314 LOG(ERROR) << name << ": fs_size can't be negative for f2fs: " << fs_size;
315 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700316 }
Tao Bao039f2da2016-11-22 16:29:50 -0800317 std::string num_sectors = std::to_string(size / 512);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700318
Tao Bao039f2da2016-11-22 16:29:50 -0800319 const char* f2fs_path = "/sbin/mkfs.f2fs";
320 const char* const f2fs_argv[] = { "mkfs.f2fs", "-t", "-d1", location.c_str(),
321 num_sectors.c_str(), nullptr };
322 int status = exec_cmd(f2fs_path, const_cast<char* const*>(f2fs_argv));
323 if (status != 0) {
324 LOG(ERROR) << name << ": mkfs.f2fs failed (" << status << ") on " << location;
325 return StringValue("");
326 }
327 return StringValue(location);
328 } else {
329 LOG(ERROR) << name << ": unsupported fs_type \"" << fs_type << "\" partition_type \""
330 << partition_type << "\"";
331 }
332
333 return nullptr;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700334}
335
Tianjie Xuc4447322017-03-06 14:44:59 -0800336Value* ShowProgressFn(const char* name, State* state,
337 const std::vector<std::unique_ptr<Expr>>& argv) {
338 if (argv.size() != 2) {
339 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
340 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800341 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700342
Tao Bao039f2da2016-11-22 16:29:50 -0800343 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800344 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800345 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
346 }
347 const std::string& frac_str = args[0];
348 const std::string& sec_str = args[1];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700349
Tao Bao039f2da2016-11-22 16:29:50 -0800350 double frac;
351 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
352 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
353 frac_str.c_str());
354 }
355 int sec;
356 if (!android::base::ParseInt(sec_str.c_str(), &sec)) {
357 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s\n", name,
358 sec_str.c_str());
359 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700360
Tao Bao039f2da2016-11-22 16:29:50 -0800361 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
362 fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700363
Tao Bao039f2da2016-11-22 16:29:50 -0800364 return StringValue(frac_str);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700365}
366
Tianjie Xuc4447322017-03-06 14:44:59 -0800367Value* SetProgressFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
368 if (argv.size() != 1) {
369 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800370 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700371
Tao Bao039f2da2016-11-22 16:29:50 -0800372 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800373 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800374 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
375 }
376 const std::string& frac_str = args[0];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700377
Tao Bao039f2da2016-11-22 16:29:50 -0800378 double frac;
379 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
380 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s\n", name,
381 frac_str.c_str());
382 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700383
Tao Bao039f2da2016-11-22 16:29:50 -0800384 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
385 fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700386
Tao Bao039f2da2016-11-22 16:29:50 -0800387 return StringValue(frac_str);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700388}
389
Tao Bao1036d362016-11-17 22:49:56 -0800390// package_extract_dir(package_dir, dest_dir)
391// Extracts all files from the package underneath package_dir and writes them to the
392// corresponding tree beneath dest_dir. Any existing files are overwritten.
393// Example: package_extract_dir("system", "/system")
394//
395// Note: package_dir needs to be a relative path; dest_dir needs to be an absolute path.
Tianjie Xuc4447322017-03-06 14:44:59 -0800396Value* PackageExtractDirFn(const char* name, State* state,
397 const std::vector<std::unique_ptr<Expr>>&argv) {
398 if (argv.size() != 2) {
399 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
400 argv.size());
Tao Bao1036d362016-11-17 22:49:56 -0800401 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700402
Tao Bao1036d362016-11-17 22:49:56 -0800403 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800404 if (!ReadArgs(state, argv, &args)) {
Tao Bao1036d362016-11-17 22:49:56 -0800405 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
406 }
407 const std::string& zip_path = args[0];
408 const std::string& dest_path = args[1];
Doug Zongker9931f7f2009-06-10 14:11:53 -0700409
Tao Bao1036d362016-11-17 22:49:56 -0800410 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700411
Tao Bao1036d362016-11-17 22:49:56 -0800412 // To create a consistent system image, never use the clock for timestamps.
413 constexpr struct utimbuf timestamp = { 1217592000, 1217592000 }; // 8/1/2008 default
Doug Zongker9931f7f2009-06-10 14:11:53 -0700414
Tao Bao1036d362016-11-17 22:49:56 -0800415 bool success = ExtractPackageRecursive(za, zip_path, dest_path, &timestamp, sehandle);
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700416
Tao Bao1036d362016-11-17 22:49:56 -0800417 return StringValue(success ? "t" : "");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700418}
419
Tao Baoef0eb3b2016-11-14 21:29:52 -0800420// package_extract_file(package_file[, dest_file])
421// Extracts a single package_file from the update package and writes it to dest_file,
422// overwriting existing files if necessary. Without the dest_file argument, returns the
423// contents of the package file as a binary blob.
Tianjie Xuc4447322017-03-06 14:44:59 -0800424Value* PackageExtractFileFn(const char* name, State* state,
425 const std::vector<std::unique_ptr<Expr>>& argv) {
426 if (argv.size() < 1 || argv.size() > 2) {
427 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
428 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800429 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700430
Tianjie Xuc4447322017-03-06 14:44:59 -0800431 if (argv.size() == 2) {
Tao Baoef0eb3b2016-11-14 21:29:52 -0800432 // The two-argument version extracts to a file.
433
434 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800435 if (!ReadArgs(state, argv, &args)) {
436 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
437 argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700438 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800439 const std::string& zip_path = args[0];
440 const std::string& dest_path = args[1];
Doug Zongker43772d22014-06-09 14:13:19 -0700441
Tao Baoef0eb3b2016-11-14 21:29:52 -0800442 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
443 ZipString zip_string_path(zip_path.c_str());
444 ZipEntry entry;
445 if (FindEntry(za, zip_string_path, &entry) != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800446 LOG(ERROR) << name << ": no " << zip_path << " in package";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800447 return StringValue("");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700448 }
Tao Baoef0eb3b2016-11-14 21:29:52 -0800449
Tao Bao358c2ec2016-11-28 11:48:43 -0800450 unique_fd fd(TEMP_FAILURE_RETRY(
451 ota_open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
Tao Baoef0eb3b2016-11-14 21:29:52 -0800452 if (fd == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800453 PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800454 return StringValue("");
455 }
456
457 bool success = true;
458 int32_t ret = ExtractEntryToFile(za, &entry, fd);
459 if (ret != 0) {
Tao Bao039f2da2016-11-22 16:29:50 -0800460 LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
461 << entry.uncompressed_length << " bytes) to \"" << dest_path
462 << "\": " << ErrorCodeString(ret);
Tao Baoef0eb3b2016-11-14 21:29:52 -0800463 success = false;
464 }
465 if (ota_fsync(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800466 PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800467 success = false;
468 }
469 if (ota_close(fd) == -1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800470 PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
Tao Baoef0eb3b2016-11-14 21:29:52 -0800471 success = false;
472 }
473
474 return StringValue(success ? "t" : "");
475 } else {
476 // The one-argument version returns the contents of the file as the result.
477
478 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800479 if (!ReadArgs(state, argv, &args)) {
480 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
481 argv.size());
Tao Baoef0eb3b2016-11-14 21:29:52 -0800482 }
483 const std::string& zip_path = args[0];
484
485 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
486 ZipString zip_string_path(zip_path.c_str());
487 ZipEntry entry;
488 if (FindEntry(za, zip_string_path, &entry) != 0) {
489 return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
490 zip_path.c_str());
491 }
492
493 std::string buffer;
494 buffer.resize(entry.uncompressed_length);
495
496 int32_t ret = ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
497 if (ret != 0) {
498 return ErrorAbort(state, kPackageExtractFileFailure,
499 "%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
500 zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
501 }
502
503 return new Value(VAL_BLOB, buffer);
504 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700505}
506
Tianjie Xuc4447322017-03-06 14:44:59 -0800507Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
508 if (argv.size() != 1) {
509 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800510 }
511 std::string key;
512 if (!Evaluate(state, argv[0], &key)) {
513 return nullptr;
514 }
515 std::string value = android::base::GetProperty(key, "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700516
Tao Bao039f2da2016-11-22 16:29:50 -0800517 return StringValue(value);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700518}
519
Doug Zongker47cace92009-06-18 10:11:50 -0700520// file_getprop(file, key)
521//
522// interprets 'file' as a getprop-style file (key=value pairs, one
Tao Bao51d516e2016-11-03 14:49:01 -0700523// per line. # comment lines, blank lines, lines without '=' ignored),
Michael Rungeaa1a31e2014-04-25 18:47:18 -0700524// and returns the value for 'key' (or "" if it isn't defined).
Tianjie Xuc4447322017-03-06 14:44:59 -0800525Value* FileGetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
526 if (argv.size() != 2) {
527 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
528 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800529 }
530
531 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800532 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800533 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
534 }
535 const std::string& filename = args[0];
536 const std::string& key = args[1];
537
538 struct stat st;
539 if (stat(filename.c_str(), &st) < 0) {
540 return ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name,
541 filename.c_str(), strerror(errno));
542 }
543
544 constexpr off_t MAX_FILE_GETPROP_SIZE = 65536;
545 if (st.st_size > MAX_FILE_GETPROP_SIZE) {
546 return ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %lld)",
547 filename.c_str(), name, static_cast<long long>(MAX_FILE_GETPROP_SIZE));
548 }
549
550 std::string buffer(st.st_size, '\0');
551 unique_file f(ota_fopen(filename.c_str(), "rb"));
552 if (f == nullptr) {
553 return ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename.c_str(),
554 strerror(errno));
555 }
556
557 if (ota_fread(&buffer[0], 1, st.st_size, f.get()) != static_cast<size_t>(st.st_size)) {
558 ErrorAbort(state, kFreadFailure, "%s: failed to read %zu bytes from %s", name,
559 static_cast<size_t>(st.st_size), filename.c_str());
560 return nullptr;
561 }
562
563 ota_fclose(f);
564
565 std::vector<std::string> lines = android::base::Split(buffer, "\n");
566 for (size_t i = 0; i < lines.size(); i++) {
567 std::string line = android::base::Trim(lines[i]);
568
569 // comment or blank line: skip to next line
570 if (line.empty() || line[0] == '#') {
571 continue;
572 }
573 size_t equal_pos = line.find('=');
574 if (equal_pos == std::string::npos) {
575 continue;
Tao Bao51d516e2016-11-03 14:49:01 -0700576 }
577
Tao Bao358c2ec2016-11-28 11:48:43 -0800578 // trim whitespace between key and '='
579 std::string str = android::base::Trim(line.substr(0, equal_pos));
Doug Zongker47cace92009-06-18 10:11:50 -0700580
Tao Bao358c2ec2016-11-28 11:48:43 -0800581 // not the key we're looking for
582 if (key != str) continue;
Doug Zongker47cace92009-06-18 10:11:50 -0700583
Tao Bao358c2ec2016-11-28 11:48:43 -0800584 return StringValue(android::base::Trim(line.substr(equal_pos + 1)));
585 }
Doug Zongker47cace92009-06-18 10:11:50 -0700586
Tao Bao358c2ec2016-11-28 11:48:43 -0800587 return StringValue("");
Doug Zongker47cace92009-06-18 10:11:50 -0700588}
589
Doug Zongker8edb00c2009-06-11 17:21:44 -0700590// apply_patch_space(bytes)
Tianjie Xuc4447322017-03-06 14:44:59 -0800591Value* ApplyPatchSpaceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
592 if (argv.size() != 1) {
593 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 args, got %zu", name,
594 argv.size());
595 }
Tao Bao039f2da2016-11-22 16:29:50 -0800596 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800597 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800598 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
599 }
600 const std::string& bytes_str = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800601
Tao Bao039f2da2016-11-22 16:29:50 -0800602 size_t bytes;
603 if (!android::base::ParseUint(bytes_str.c_str(), &bytes)) {
604 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count\n\n",
605 name, bytes_str.c_str());
606 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800607
Tao Bao039f2da2016-11-22 16:29:50 -0800608 return StringValue(CacheSizeCheck(bytes) ? "" : "t");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800609}
610
Tao Bao039f2da2016-11-22 16:29:50 -0800611// apply_patch(src_file, tgt_file, tgt_sha1, tgt_size, patch1_sha1, patch1_blob, [...])
612// Applies a binary patch to the src_file to produce the tgt_file. If the desired target is the
613// same as the source, pass "-" for tgt_file. tgt_sha1 and tgt_size are the expected final SHA1
614// hash and size of the target file. The remaining arguments must come in pairs: a SHA1 hash (a
615// 40-character hex string) and a blob. The blob is the patch to be applied when the source
616// file's current contents have the given SHA1.
617//
618// The patching is done in a safe manner that guarantees the target file either has the desired
619// SHA1 hash and size, or it is untouched -- it will not be left in an unrecoverable intermediate
620// state. If the process is interrupted during patching, the target file may be in an intermediate
621// state; a copy exists in the cache partition so restarting the update can successfully update
622// the file.
Tianjie Xuc4447322017-03-06 14:44:59 -0800623Value* ApplyPatchFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
624 if (argv.size() < 6 || (argv.size() % 2) == 1) {
Tianjie Xu16255832016-04-30 11:49:59 -0700625 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 6 args and an "
Tianjie Xuc4447322017-03-06 14:44:59 -0800626 "even number, got %zu", name, argv.size());
Doug Zongker8edb00c2009-06-11 17:21:44 -0700627 }
628
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700629 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800630 if (!ReadArgs(state, argv, &args, 0, 4)) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700631 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700632 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700633 const std::string& source_filename = args[0];
634 const std::string& target_filename = args[1];
635 const std::string& target_sha1 = args[2];
636 const std::string& target_size_str = args[3];
Doug Zongker8edb00c2009-06-11 17:21:44 -0700637
Tao Baob15fd222015-09-24 11:10:51 -0700638 size_t target_size;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700639 if (!android::base::ParseUint(target_size_str.c_str(), &target_size)) {
640 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count",
641 name, target_size_str.c_str());
Doug Zongkerc4351c72010-02-22 14:46:32 -0800642 }
643
Tianjie Xuc4447322017-03-06 14:44:59 -0800644 int patchcount = (argv.size()-4) / 2;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700645 std::vector<std::unique_ptr<Value>> arg_values;
Tianjie Xuc4447322017-03-06 14:44:59 -0800646 if (!ReadValueArgs(state, argv, &arg_values, 4, argv.size() - 4)) {
Yabin Cui64be2132016-02-03 18:16:02 -0800647 return nullptr;
648 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700649
Yabin Cui64be2132016-02-03 18:16:02 -0800650 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700651 if (arg_values[i * 2]->type != VAL_STRING) {
652 return ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name,
653 i * 2);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800654 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700655 if (arg_values[i * 2 + 1]->type != VAL_BLOB) {
656 return ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name,
657 i * 2 + 1);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800658 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700659 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700660
Tianjie Xuaced5d92016-10-12 10:55:04 -0700661 std::vector<std::string> patch_sha_str;
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700662 std::vector<std::unique_ptr<Value>> patches;
Yabin Cui64be2132016-02-03 18:16:02 -0800663 for (int i = 0; i < patchcount; ++i) {
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700664 patch_sha_str.push_back(arg_values[i * 2]->data);
665 patches.push_back(std::move(arg_values[i * 2 + 1]));
Doug Zongker8edb00c2009-06-11 17:21:44 -0700666 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800667
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700668 int result = applypatch(source_filename.c_str(), target_filename.c_str(),
669 target_sha1.c_str(), target_size,
670 patch_sha_str, patches, nullptr);
Doug Zongkerc4351c72010-02-22 14:46:32 -0800671
Tianjie Xuaced5d92016-10-12 10:55:04 -0700672 return StringValue(result == 0 ? "t" : "");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800673}
674
Tao Bao039f2da2016-11-22 16:29:50 -0800675// apply_patch_check(filename, [sha1, ...])
676// Returns true if the contents of filename or the temporary copy in the cache partition (if
677// present) have a SHA-1 checksum equal to one of the given sha1 values. sha1 values are
678// specified as 40 hex digits. This function differs from sha1_check(read_file(filename),
679// sha1 [, ...]) in that it knows to check the cache partition copy, so apply_patch_check() will
680// succeed even if the file was corrupted by an interrupted apply_patch() update.
Tianjie Xuc4447322017-03-06 14:44:59 -0800681Value* ApplyPatchCheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
682 if (argv.size() < 1) {
683 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %zu", name,
684 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800685 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800686
Tao Bao039f2da2016-11-22 16:29:50 -0800687 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800688 if (!ReadArgs(state, argv, &args, 0, 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800689 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
690 }
691 const std::string& filename = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800692
Tao Bao039f2da2016-11-22 16:29:50 -0800693 std::vector<std::string> sha1s;
Tao Baodb56eb02017-03-23 06:34:20 -0700694 if (argv.size() > 1 && !ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800695 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
696 }
697 int result = applypatch_check(filename.c_str(), sha1s);
Tianjie Xuaced5d92016-10-12 10:55:04 -0700698
Tao Bao039f2da2016-11-22 16:29:50 -0800699 return StringValue(result == 0 ? "t" : "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700700}
701
Tao Bao0bbc7642017-03-29 23:57:47 -0700702// This is the updater side handler for ui_print() in edify script. Contents will be sent over to
703// the recovery side for on-screen display.
Tianjie Xuc4447322017-03-06 14:44:59 -0800704Value* UIPrintFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
Tao Bao039f2da2016-11-22 16:29:50 -0800705 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800706 if (!ReadArgs(state, argv, &args)) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700707 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
Tao Bao039f2da2016-11-22 16:29:50 -0800708 }
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700709
Tao Bao0bbc7642017-03-29 23:57:47 -0700710 std::string buffer = android::base::Join(args, "");
Tao Bao039f2da2016-11-22 16:29:50 -0800711 uiPrint(state, buffer);
712 return StringValue(buffer);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700713}
714
Tianjie Xuc4447322017-03-06 14:44:59 -0800715Value* WipeCacheFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
716 if (!argv.empty()) {
717 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
718 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800719 }
720 fprintf(static_cast<UpdaterInfo*>(state->cookie)->cmd_pipe, "wipe_cache\n");
721 return StringValue("t");
Doug Zongkerd0181b82011-10-19 10:51:12 -0700722}
723
Tianjie Xuc4447322017-03-06 14:44:59 -0800724Value* RunProgramFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
725 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800726 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
727 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700728
Tao Bao039f2da2016-11-22 16:29:50 -0800729 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800730 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800731 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
732 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700733
Tianjie Xuc4447322017-03-06 14:44:59 -0800734 char* args2[argv.size() + 1];
735 for (size_t i = 0; i < argv.size(); i++) {
Tao Bao039f2da2016-11-22 16:29:50 -0800736 args2[i] = &args[i][0];
737 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800738 args2[argv.size()] = nullptr;
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700739
Tianjie Xuc4447322017-03-06 14:44:59 -0800740 LOG(INFO) << "about to run program [" << args2[0] << "] with " << argv.size() << " args";
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700741
Tao Bao039f2da2016-11-22 16:29:50 -0800742 pid_t child = fork();
743 if (child == 0) {
744 execv(args2[0], args2);
745 PLOG(ERROR) << "run_program: execv failed";
Tao Bao3da88012017-02-03 13:09:23 -0800746 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800747 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700748
Tao Bao039f2da2016-11-22 16:29:50 -0800749 int status;
750 waitpid(child, &status, 0);
751 if (WIFEXITED(status)) {
752 if (WEXITSTATUS(status) != 0) {
753 LOG(ERROR) << "run_program: child exited with status " << WEXITSTATUS(status);
754 }
755 } else if (WIFSIGNALED(status)) {
756 LOG(ERROR) << "run_program: child terminated by signal " << WTERMSIG(status);
757 }
758
759 return StringValue(std::to_string(status));
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700760}
761
Doug Zongker512536a2010-02-17 16:11:44 -0800762// sha1_check(data)
763// to return the sha1 of the data (given in the format returned by
764// read_file).
765//
766// sha1_check(data, sha1_hex, [sha1_hex, ...])
767// returns the sha1 of the file if it matches any of the hex
768// strings passed, or "" if it does not equal any of them.
769//
Tianjie Xuc4447322017-03-06 14:44:59 -0800770Value* Sha1CheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
771 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800772 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
773 }
Doug Zongker512536a2010-02-17 16:11:44 -0800774
Tao Bao039f2da2016-11-22 16:29:50 -0800775 std::vector<std::unique_ptr<Value>> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800776 if (!ReadValueArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800777 return nullptr;
778 }
Doug Zongker512536a2010-02-17 16:11:44 -0800779
Tao Bao039f2da2016-11-22 16:29:50 -0800780 if (args[0]->type == VAL_INVALID) {
Tianjie Xuaced5d92016-10-12 10:55:04 -0700781 return StringValue("");
Tao Bao039f2da2016-11-22 16:29:50 -0800782 }
783 uint8_t digest[SHA_DIGEST_LENGTH];
784 SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
785
Tianjie Xuc4447322017-03-06 14:44:59 -0800786 if (argv.size() == 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800787 return StringValue(print_sha1(digest));
788 }
789
Tianjie Xuc4447322017-03-06 14:44:59 -0800790 for (size_t i = 1; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -0800791 uint8_t arg_digest[SHA_DIGEST_LENGTH];
792 if (args[i]->type != VAL_STRING) {
793 LOG(ERROR) << name << "(): arg " << i << " is not a string; skipping";
794 } else if (ParseSha1(args[i]->data.c_str(), arg_digest) != 0) {
795 // Warn about bad args and skip them.
796 LOG(ERROR) << name << "(): error parsing \"" << args[i]->data << "\" as sha-1; skipping";
797 } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
798 // Found a match.
799 return args[i].release();
800 }
801 }
802
803 // Didn't match any of the hex strings; return false.
804 return StringValue("");
Doug Zongker512536a2010-02-17 16:11:44 -0800805}
806
Hristo Bojinovdb314d62010-08-02 10:29:49 -0700807// Read a local file and return its contents (the Value* returned
Doug Zongker512536a2010-02-17 16:11:44 -0800808// is actually a FileContents*).
Tianjie Xuc4447322017-03-06 14:44:59 -0800809Value* ReadFileFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
810 if (argv.size() != 1) {
811 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800812 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700813
Tao Bao039f2da2016-11-22 16:29:50 -0800814 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800815 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800816 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
817 }
818 const std::string& filename = args[0];
Doug Zongker512536a2010-02-17 16:11:44 -0800819
Tao Bao039f2da2016-11-22 16:29:50 -0800820 Value* v = new Value(VAL_INVALID, "");
Doug Zongker512536a2010-02-17 16:11:44 -0800821
Tao Bao039f2da2016-11-22 16:29:50 -0800822 FileContents fc;
823 if (LoadFileContents(filename.c_str(), &fc) == 0) {
824 v->type = VAL_BLOB;
825 v->data = std::string(fc.data.begin(), fc.data.end());
826 }
827 return v;
Doug Zongker512536a2010-02-17 16:11:44 -0800828}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700829
Tao Baod0f30882016-11-03 23:52:01 -0700830// write_value(value, filename)
831// Writes 'value' to 'filename'.
832// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
Tianjie Xuc4447322017-03-06 14:44:59 -0800833Value* WriteValueFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
834 if (argv.size() != 2) {
835 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
836 argv.size());
Tao Baod0f30882016-11-03 23:52:01 -0700837 }
838
839 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800840 if (!ReadArgs(state, argv, &args)) {
Tao Baod0f30882016-11-03 23:52:01 -0700841 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
842 }
843
844 const std::string& filename = args[1];
845 if (filename.empty()) {
846 return ErrorAbort(state, kArgsParsingFailure, "%s(): Filename cannot be empty", name);
847 }
848
849 const std::string& value = args[0];
850 if (!android::base::WriteStringToFile(value, filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800851 PLOG(ERROR) << name << ": Failed to write to \"" << filename << "\"";
Tao Baod0f30882016-11-03 23:52:01 -0700852 return StringValue("");
853 } else {
854 return StringValue("t");
855 }
856}
857
Doug Zongkerc87bab12013-11-25 13:53:25 -0800858// Immediately reboot the device. Recovery is not finished normally,
859// so if you reboot into recovery it will re-start applying the
860// current package (because nothing has cleared the copy of the
861// arguments stored in the BCB).
862//
863// The argument is the partition name passed to the android reboot
864// property. It can be "recovery" to boot from the recovery
865// partition, or "" (empty string) to boot from the regular boot
866// partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800867Value* RebootNowFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
868 if (argv.size() != 2) {
869 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
870 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800871 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800872
Tao Baobedf5fc2016-11-18 12:01:26 -0800873 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800874 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800875 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
876 }
877 const std::string& filename = args[0];
878 const std::string& property = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800879
Tao Baobedf5fc2016-11-18 12:01:26 -0800880 // Zero out the 'command' field of the bootloader message. Leave the rest intact.
881 bootloader_message boot;
882 std::string err;
883 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800884 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800885 return StringValue("");
886 }
887 memset(boot.command, 0, sizeof(boot.command));
888 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800889 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800890 return StringValue("");
891 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800892
Tao Baobedf5fc2016-11-18 12:01:26 -0800893 const std::string reboot_cmd = "reboot," + property;
894 android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_cmd);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800895
Tao Baobedf5fc2016-11-18 12:01:26 -0800896 sleep(5);
897 return ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800898}
899
900// Store a string value somewhere that future invocations of recovery
901// can access it. This value is called the "stage" and can be used to
902// drive packages that need to do reboots in the middle of
903// installation and keep track of where they are in the multi-stage
904// install.
905//
906// The first argument is the block device for the misc partition
907// ("/misc" in the fstab), which is where this value is stored. The
908// second argument is the string to store; it should not exceed 31
909// bytes.
Tianjie Xuc4447322017-03-06 14:44:59 -0800910Value* SetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
911 if (argv.size() != 2) {
912 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
913 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800914 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800915
Tao Baobedf5fc2016-11-18 12:01:26 -0800916 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800917 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800918 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
919 }
920 const std::string& filename = args[0];
921 const std::string& stagestr = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800922
Tao Baobedf5fc2016-11-18 12:01:26 -0800923 // Store this value in the misc partition, immediately after the
924 // bootloader message that the main recovery uses to save its
925 // arguments in case of the device restarting midway through
926 // package installation.
927 bootloader_message boot;
928 std::string err;
929 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800930 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800931 return StringValue("");
932 }
933 strlcpy(boot.stage, stagestr.c_str(), sizeof(boot.stage));
934 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800935 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800936 return StringValue("");
937 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800938
Tao Baobedf5fc2016-11-18 12:01:26 -0800939 return StringValue(filename);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800940}
941
942// Return the value most recently saved with SetStageFn. The argument
943// is the block device for the misc partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800944Value* GetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
945 if (argv.size() != 1) {
946 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800947 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800948
Tao Baobedf5fc2016-11-18 12:01:26 -0800949 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800950 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800951 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
952 }
953 const std::string& filename = args[0];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800954
Tao Baobedf5fc2016-11-18 12:01:26 -0800955 bootloader_message boot;
956 std::string err;
957 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800958 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800959 return StringValue("");
960 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800961
Tao Baobedf5fc2016-11-18 12:01:26 -0800962 return StringValue(boot.stage);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800963}
964
Tianjie Xuc4447322017-03-06 14:44:59 -0800965Value* WipeBlockDeviceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
966 if (argv.size() != 2) {
967 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
968 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800969 }
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800970
Tao Bao358c2ec2016-11-28 11:48:43 -0800971 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800972 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800973 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
974 }
975 const std::string& filename = args[0];
976 const std::string& len_str = args[1];
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800977
Tao Bao358c2ec2016-11-28 11:48:43 -0800978 size_t len;
979 if (!android::base::ParseUint(len_str.c_str(), &len)) {
980 return nullptr;
981 }
982 unique_fd fd(ota_open(filename.c_str(), O_WRONLY, 0644));
983 // The wipe_block_device function in ext4_utils returns 0 on success and 1
984 // for failure.
985 int status = wipe_block_device(fd, len);
986 return StringValue((status == 0) ? "t" : "");
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800987}
988
Tianjie Xuc4447322017-03-06 14:44:59 -0800989Value* EnableRebootFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
990 if (!argv.empty()) {
991 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
992 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800993 }
994 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
995 fprintf(ui->cmd_pipe, "enable_reboot\n");
996 return StringValue("t");
Doug Zongkerc704e062014-05-23 08:40:35 -0700997}
998
Tianjie Xuc4447322017-03-06 14:44:59 -0800999Value* Tune2FsFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
1000 if (argv.empty()) {
1001 return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -08001002 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001003
Tao Bao039f2da2016-11-22 16:29:50 -08001004 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -08001005 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -08001006 return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
1007 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001008
Tianjie Xuc4447322017-03-06 14:44:59 -08001009 char* args2[argv.size() + 1];
Tao Bao039f2da2016-11-22 16:29:50 -08001010 // Tune2fs expects the program name as its args[0]
1011 args2[0] = const_cast<char*>(name);
1012 if (args2[0] == nullptr) {
1013 return nullptr;
1014 }
Tianjie Xuc4447322017-03-06 14:44:59 -08001015 for (size_t i = 0; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -08001016 args2[i + 1] = &args[i][0];
1017 }
Michael Rungeacf47db2014-11-21 00:12:28 -08001018
Tao Bao039f2da2016-11-22 16:29:50 -08001019 // tune2fs changes the file system parameters on an ext2 file system; it
1020 // returns 0 on success.
Tianjie Xuc4447322017-03-06 14:44:59 -08001021 int result = tune2fs_main(argv.size() + 1, args2);
Tao Bao039f2da2016-11-22 16:29:50 -08001022 if (result != 0) {
1023 return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", name, result);
1024 }
1025 return StringValue("t");
Michael Rungeacf47db2014-11-21 00:12:28 -08001026}
1027
Doug Zongker9931f7f2009-06-10 14:11:53 -07001028void RegisterInstallFunctions() {
Tao Bao039f2da2016-11-22 16:29:50 -08001029 RegisterFunction("mount", MountFn);
1030 RegisterFunction("is_mounted", IsMountedFn);
1031 RegisterFunction("unmount", UnmountFn);
1032 RegisterFunction("format", FormatFn);
1033 RegisterFunction("show_progress", ShowProgressFn);
1034 RegisterFunction("set_progress", SetProgressFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001035 RegisterFunction("package_extract_dir", PackageExtractDirFn);
1036 RegisterFunction("package_extract_file", PackageExtractFileFn);
Nick Kralevich5dbdef02013-09-07 14:41:06 -07001037
Tao Bao039f2da2016-11-22 16:29:50 -08001038 RegisterFunction("getprop", GetPropFn);
1039 RegisterFunction("file_getprop", FileGetPropFn);
Doug Zongker8edb00c2009-06-11 17:21:44 -07001040
Tao Bao039f2da2016-11-22 16:29:50 -08001041 RegisterFunction("apply_patch", ApplyPatchFn);
1042 RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
1043 RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
Doug Zongkerd9c9d102009-06-12 12:24:39 -07001044
Tao Bao039f2da2016-11-22 16:29:50 -08001045 RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
Doug Zongker52b40362014-02-10 15:30:30 -08001046
Tao Bao039f2da2016-11-22 16:29:50 -08001047 RegisterFunction("read_file", ReadFileFn);
1048 RegisterFunction("sha1_check", Sha1CheckFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001049 RegisterFunction("write_value", WriteValueFn);
Doug Zongker512536a2010-02-17 16:11:44 -08001050
Tao Bao039f2da2016-11-22 16:29:50 -08001051 RegisterFunction("wipe_cache", WipeCacheFn);
Doug Zongkerd0181b82011-10-19 10:51:12 -07001052
Tao Bao039f2da2016-11-22 16:29:50 -08001053 RegisterFunction("ui_print", UIPrintFn);
Doug Zongkera3f89ea2009-09-10 14:10:48 -07001054
Tao Bao039f2da2016-11-22 16:29:50 -08001055 RegisterFunction("run_program", RunProgramFn);
Doug Zongkerc87bab12013-11-25 13:53:25 -08001056
Tao Bao039f2da2016-11-22 16:29:50 -08001057 RegisterFunction("reboot_now", RebootNowFn);
1058 RegisterFunction("get_stage", GetStageFn);
1059 RegisterFunction("set_stage", SetStageFn);
Doug Zongkerc704e062014-05-23 08:40:35 -07001060
Tao Bao039f2da2016-11-22 16:29:50 -08001061 RegisterFunction("enable_reboot", EnableRebootFn);
1062 RegisterFunction("tune2fs", Tune2FsFn);
Doug Zongker9931f7f2009-06-10 14:11:53 -07001063}