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The Android Open Source Projectc24a8e62009-03-03 19:28:42 -08001/*
2 * Copyright (C) 2007 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
Doug Zongkerb2ee9202009-06-04 10:24:53 -070017#include <ctype.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080018#include <errno.h>
19#include <fcntl.h>
20#include <limits.h>
Elliott Hughes26dbad22015-01-28 12:09:05 -080021#include <string.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080022#include <sys/stat.h>
Doug Zongkerb2ee9202009-06-04 10:24:53 -070023#include <sys/wait.h>
24#include <unistd.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080025
Tao Bao71e3e092016-02-02 14:02:27 -080026#include <vector>
27
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080028#include "common.h"
29#include "install.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080030#include "minui/minui.h"
31#include "minzip/SysUtil.h"
32#include "minzip/Zip.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080033#include "roots.h"
Doug Zongker10e418d2011-10-28 10:33:05 -070034#include "ui.h"
Mattias Nissler452df6d2016-04-04 16:17:01 +020035#include "verifier.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080036
Doug Zongker74406302011-10-28 15:13:10 -070037extern RecoveryUI* ui;
38
Doug Zongkerb2ee9202009-06-04 10:24:53 -070039#define ASSUMED_UPDATE_BINARY_NAME "META-INF/com/google/android/update-binary"
Doug Zongkerd1b19b92009-04-01 15:48:46 -070040#define PUBLIC_KEYS_FILE "/res/keys"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080041
Doug Zongker74406302011-10-28 15:13:10 -070042// Default allocation of progress bar segments to operations
43static const int VERIFICATION_PROGRESS_TIME = 60;
44static const float VERIFICATION_PROGRESS_FRACTION = 0.25;
45static const float DEFAULT_FILES_PROGRESS_FRACTION = 0.4;
46static const float DEFAULT_IMAGE_PROGRESS_FRACTION = 0.1;
47
Doug Zongkerb2ee9202009-06-04 10:24:53 -070048// If the package contains an update binary, extract it and run it.
49static int
Tao Bao145d8612015-03-25 15:51:15 -070050try_update_binary(const char* path, ZipArchive* zip, bool* wipe_cache) {
Doug Zongkerb2ee9202009-06-04 10:24:53 -070051 const ZipEntry* binary_entry =
52 mzFindZipEntry(zip, ASSUMED_UPDATE_BINARY_NAME);
53 if (binary_entry == NULL) {
Doug Zongker8e5e4da2010-09-14 18:06:55 -070054 mzCloseZipArchive(zip);
Doug Zongkerb2ee9202009-06-04 10:24:53 -070055 return INSTALL_CORRUPT;
56 }
57
Doug Zongker10e418d2011-10-28 10:33:05 -070058 const char* binary = "/tmp/update_binary";
Doug Zongkerb2ee9202009-06-04 10:24:53 -070059 unlink(binary);
60 int fd = creat(binary, 0755);
61 if (fd < 0) {
Doug Zongker8e5e4da2010-09-14 18:06:55 -070062 mzCloseZipArchive(zip);
Doug Zongkerb2ee9202009-06-04 10:24:53 -070063 LOGE("Can't make %s\n", binary);
Doug Zongkerd0181b82011-10-19 10:51:12 -070064 return INSTALL_ERROR;
Doug Zongkerb2ee9202009-06-04 10:24:53 -070065 }
66 bool ok = mzExtractZipEntryToFile(zip, binary_entry, fd);
67 close(fd);
Doug Zongker8e5e4da2010-09-14 18:06:55 -070068 mzCloseZipArchive(zip);
Doug Zongkerb2ee9202009-06-04 10:24:53 -070069
70 if (!ok) {
71 LOGE("Can't copy %s\n", ASSUMED_UPDATE_BINARY_NAME);
Doug Zongkerd0181b82011-10-19 10:51:12 -070072 return INSTALL_ERROR;
Doug Zongkerb2ee9202009-06-04 10:24:53 -070073 }
74
75 int pipefd[2];
76 pipe(pipefd);
77
78 // When executing the update binary contained in the package, the
79 // arguments passed are:
80 //
Doug Zongkerfb2e3af2009-06-17 17:29:40 -070081 // - the version number for this interface
Doug Zongkerb2ee9202009-06-04 10:24:53 -070082 //
83 // - an fd to which the program can write in order to update the
84 // progress bar. The program can write single-line commands:
85 //
86 // progress <frac> <secs>
Doug Zongkerfbf3c102009-06-24 09:36:20 -070087 // fill up the next <frac> part of of the progress bar
88 // over <secs> seconds. If <secs> is zero, use
89 // set_progress commands to manually control the
Tao Baob07e1f32015-04-10 16:14:52 -070090 // progress of this segment of the bar.
Doug Zongkerfbf3c102009-06-24 09:36:20 -070091 //
92 // set_progress <frac>
93 // <frac> should be between 0.0 and 1.0; sets the
94 // progress bar within the segment defined by the most
95 // recent progress command.
Doug Zongkerb2ee9202009-06-04 10:24:53 -070096 //
97 // firmware <"hboot"|"radio"> <filename>
98 // arrange to install the contents of <filename> in the
Doug Zongkere08991e2010-02-02 13:09:52 -080099 // given partition on reboot.
100 //
101 // (API v2: <filename> may start with "PACKAGE:" to
102 // indicate taking a file from the OTA package.)
103 //
104 // (API v3: this command no longer exists.)
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700105 //
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700106 // ui_print <string>
107 // display <string> on the screen.
108 //
Tao Baob07e1f32015-04-10 16:14:52 -0700109 // wipe_cache
110 // a wipe of cache will be performed following a successful
111 // installation.
112 //
113 // clear_display
114 // turn off the text display.
115 //
116 // enable_reboot
117 // packages can explicitly request that they want the user
118 // to be able to reboot during installation (useful for
119 // debugging packages that don't exit).
120 //
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700121 // - the name of the package zip file.
122 //
123
Yabin Cui4425c1d2016-02-10 13:47:32 -0800124 const char* args[5];
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700125 args[0] = binary;
Doug Zongkerfb2e3af2009-06-17 17:29:40 -0700126 args[1] = EXPAND(RECOVERY_API_VERSION); // defined in Android.mk
Yabin Cui4425c1d2016-02-10 13:47:32 -0800127 char temp[16];
128 snprintf(temp, sizeof(temp), "%d", pipefd[1]);
Doug Zongker10e418d2011-10-28 10:33:05 -0700129 args[2] = temp;
Yabin Cui4425c1d2016-02-10 13:47:32 -0800130 args[3] = path;
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700131 args[4] = NULL;
132
133 pid_t pid = fork();
134 if (pid == 0) {
Alistair Strachan027429a2013-07-17 10:41:49 -0700135 umask(022);
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700136 close(pipefd[0]);
Yabin Cui4425c1d2016-02-10 13:47:32 -0800137 execv(binary, const_cast<char**>(args));
Doug Zongker56c51052010-07-01 09:18:44 -0700138 fprintf(stdout, "E:Can't run %s (%s)\n", binary, strerror(errno));
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700139 _exit(-1);
140 }
141 close(pipefd[1]);
142
Tao Bao145d8612015-03-25 15:51:15 -0700143 *wipe_cache = false;
Tianjie Xu3c62b672016-02-05 18:25:58 -0800144 bool retry_update = false;
Doug Zongkerd0181b82011-10-19 10:51:12 -0700145
Doug Zongker64893cc2009-07-14 16:31:56 -0700146 char buffer[1024];
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700147 FILE* from_child = fdopen(pipefd[0], "r");
148 while (fgets(buffer, sizeof(buffer), from_child) != NULL) {
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700149 char* command = strtok(buffer, " \n");
150 if (command == NULL) {
151 continue;
152 } else if (strcmp(command, "progress") == 0) {
153 char* fraction_s = strtok(NULL, " \n");
154 char* seconds_s = strtok(NULL, " \n");
155
156 float fraction = strtof(fraction_s, NULL);
157 int seconds = strtol(seconds_s, NULL, 10);
158
Doug Zongker74406302011-10-28 15:13:10 -0700159 ui->ShowProgress(fraction * (1-VERIFICATION_PROGRESS_FRACTION), seconds);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700160 } else if (strcmp(command, "set_progress") == 0) {
161 char* fraction_s = strtok(NULL, " \n");
162 float fraction = strtof(fraction_s, NULL);
Doug Zongker74406302011-10-28 15:13:10 -0700163 ui->SetProgress(fraction);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700164 } else if (strcmp(command, "ui_print") == 0) {
165 char* str = strtok(NULL, "\n");
166 if (str) {
Tao Baob6918c72015-05-19 17:02:16 -0700167 ui->PrintOnScreenOnly("%s", str);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700168 } else {
Tao Baob6918c72015-05-19 17:02:16 -0700169 ui->PrintOnScreenOnly("\n");
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700170 }
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700171 fflush(stdout);
Doug Zongkerd0181b82011-10-19 10:51:12 -0700172 } else if (strcmp(command, "wipe_cache") == 0) {
Tao Bao145d8612015-03-25 15:51:15 -0700173 *wipe_cache = true;
Doug Zongkere5d5ac72012-04-12 11:01:22 -0700174 } else if (strcmp(command, "clear_display") == 0) {
175 ui->SetBackground(RecoveryUI::NONE);
Doug Zongkerc704e062014-05-23 08:40:35 -0700176 } else if (strcmp(command, "enable_reboot") == 0) {
177 // packages can explicitly request that they want the user
178 // to be able to reboot during installation (useful for
179 // debugging packages that don't exit).
180 ui->SetEnableReboot(true);
Tianjie Xu3c62b672016-02-05 18:25:58 -0800181 } else if (strcmp(command, "retry_update") == 0) {
182 retry_update = true;
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700183 } else {
184 LOGE("unknown command [%s]\n", command);
185 }
186 }
187 fclose(from_child);
188
189 int status;
190 waitpid(pid, &status, 0);
Tianjie Xu3c62b672016-02-05 18:25:58 -0800191 if (retry_update) {
192 return INSTALL_RETRY;
193 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700194 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
Doug Zongker9931f7f2009-06-10 14:11:53 -0700195 LOGE("Error in %s\n(Status %d)\n", path, WEXITSTATUS(status));
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700196 return INSTALL_ERROR;
197 }
198
Doug Zongkere08991e2010-02-02 13:09:52 -0800199 return INSTALL_SUCCESS;
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700200}
201
Doug Zongker469243e2011-04-12 09:28:10 -0700202static int
Tao Bao145d8612015-03-25 15:51:15 -0700203really_install_package(const char *path, bool* wipe_cache, bool needs_mount)
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800204{
Doug Zongker02ec6b82012-08-22 17:26:40 -0700205 ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
Doug Zongker74406302011-10-28 15:13:10 -0700206 ui->Print("Finding update package...\n");
Doug Zongker239ac6a2013-08-20 16:03:25 -0700207 // Give verification half the progress bar...
208 ui->SetProgressType(RecoveryUI::DETERMINATE);
209 ui->ShowProgress(VERIFICATION_PROGRESS_FRACTION, VERIFICATION_PROGRESS_TIME);
Doug Zongkercc8cd3f2010-09-20 12:16:13 -0700210 LOGI("Update location: %s\n", path);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800211
Doug Zongker99916f02014-01-13 14:16:58 -0800212 // Map the update package into memory.
213 ui->Print("Opening update package...\n");
214
Doug Zongker075ad802014-06-26 15:35:51 -0700215 if (path && needs_mount) {
Doug Zongker99916f02014-01-13 14:16:58 -0800216 if (path[0] == '@') {
217 ensure_path_mounted(path+1);
218 } else {
219 ensure_path_mounted(path);
220 }
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800221 }
222
Doug Zongker99916f02014-01-13 14:16:58 -0800223 MemMapping map;
224 if (sysMapFile(path, &map) != 0) {
225 LOGE("failed to map file\n");
226 return INSTALL_CORRUPT;
227 }
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800228
Tao Bao71e3e092016-02-02 14:02:27 -0800229 std::vector<Certificate> loadedKeys;
230 if (!load_keys(PUBLIC_KEYS_FILE, loadedKeys)) {
Doug Zongkerd1b19b92009-04-01 15:48:46 -0700231 LOGE("Failed to load keys\n");
232 return INSTALL_CORRUPT;
233 }
Tao Bao71e3e092016-02-02 14:02:27 -0800234 LOGI("%zu key(s) loaded from %s\n", loadedKeys.size(), PUBLIC_KEYS_FILE);
Doug Zongkerd1b19b92009-04-01 15:48:46 -0700235
Doug Zongker74406302011-10-28 15:13:10 -0700236 ui->Print("Verifying update package...\n");
Doug Zongker60151a22009-08-12 18:30:03 -0700237
Tao Bao71e3e092016-02-02 14:02:27 -0800238 int err = verify_file(map.addr, map.length, loadedKeys);
Doug Zongker60151a22009-08-12 18:30:03 -0700239 LOGI("verify_file returned %d\n", err);
240 if (err != VERIFY_SUCCESS) {
241 LOGE("signature verification failed\n");
Doug Zongker99916f02014-01-13 14:16:58 -0800242 sysReleaseMap(&map);
Doug Zongker60151a22009-08-12 18:30:03 -0700243 return INSTALL_CORRUPT;
244 }
245
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800246 /* Try to open the package.
247 */
248 ZipArchive zip;
Doug Zongker99916f02014-01-13 14:16:58 -0800249 err = mzOpenZipArchive(map.addr, map.length, &zip);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800250 if (err != 0) {
251 LOGE("Can't open %s\n(%s)\n", path, err != -1 ? strerror(err) : "bad");
Doug Zongker99916f02014-01-13 14:16:58 -0800252 sysReleaseMap(&map);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800253 return INSTALL_CORRUPT;
254 }
255
256 /* Verify and install the contents of the package.
257 */
Doug Zongker74406302011-10-28 15:13:10 -0700258 ui->Print("Installing update...\n");
Doug Zongkerc704e062014-05-23 08:40:35 -0700259 ui->SetEnableReboot(false);
Doug Zongker99916f02014-01-13 14:16:58 -0800260 int result = try_update_binary(path, &zip, wipe_cache);
Doug Zongkerc704e062014-05-23 08:40:35 -0700261 ui->SetEnableReboot(true);
Doug Zongker075ad802014-06-26 15:35:51 -0700262 ui->Print("\n");
Doug Zongker99916f02014-01-13 14:16:58 -0800263
264 sysReleaseMap(&map);
265
266 return result;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800267}
Doug Zongker469243e2011-04-12 09:28:10 -0700268
269int
Tao Bao145d8612015-03-25 15:51:15 -0700270install_package(const char* path, bool* wipe_cache, const char* install_file,
Doug Zongker075ad802014-06-26 15:35:51 -0700271 bool needs_mount)
Doug Zongker469243e2011-04-12 09:28:10 -0700272{
Tao Bao682c34b2015-04-07 17:16:35 -0700273 modified_flash = true;
274
Doug Zongkerd0181b82011-10-19 10:51:12 -0700275 FILE* install_log = fopen_path(install_file, "w");
Doug Zongker469243e2011-04-12 09:28:10 -0700276 if (install_log) {
277 fputs(path, install_log);
278 fputc('\n', install_log);
279 } else {
280 LOGE("failed to open last_install: %s\n", strerror(errno));
281 }
Doug Zongker239ac6a2013-08-20 16:03:25 -0700282 int result;
283 if (setup_install_mounts() != 0) {
284 LOGE("failed to set up expected mounts for install; aborting\n");
285 result = INSTALL_ERROR;
286 } else {
Doug Zongker075ad802014-06-26 15:35:51 -0700287 result = really_install_package(path, wipe_cache, needs_mount);
Doug Zongker239ac6a2013-08-20 16:03:25 -0700288 }
Doug Zongker469243e2011-04-12 09:28:10 -0700289 if (install_log) {
290 fputc(result == INSTALL_SUCCESS ? '1' : '0', install_log);
291 fputc('\n', install_log);
292 fclose(install_log);
Doug Zongker469243e2011-04-12 09:28:10 -0700293 }
294 return result;
295}