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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/updater.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070018
Doug Zongker9931f7f2009-06-10 14:11:53 -070019#include <stdio.h>
20#include <unistd.h>
21#include <stdlib.h>
Elliott Hughescd3c55a2015-01-29 20:50:08 -080022#include <string.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070023
Tao Bao59dcb9c2016-10-03 18:06:46 -070024#include <android-base/strings.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070025#include <selinux/label.h>
26#include <selinux/selinux.h>
27
Tao Bao59dcb9c2016-10-03 18:06:46 -070028#include "config.h"
29#include "edify/expr.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070030#include "minzip/SysUtil.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070031#include "minzip/Zip.h"
32#include "updater/blockimg.h"
33#include "updater/install.h"
Tao Bao59dcb9c2016-10-03 18:06:46 -070034
Doug Zongker2b0fdc62009-06-19 11:22:06 -070035// Generated by the makefile, this function defines the
36// RegisterDeviceExtensions() function, which calls all the
37// registration functions for device-specific extensions.
38#include "register.inc"
39
Doug Zongker9931f7f2009-06-10 14:11:53 -070040// Where in the package we expect to find the edify script to execute.
41// (Note it's "updateR-script", not the older "update-script".)
42#define SCRIPT_NAME "META-INF/com/google/android/updater-script"
43
Tianjie Xu3c62b672016-02-05 18:25:58 -080044extern bool have_eio_error;
45
Stephen Smalley779701d2012-02-09 14:13:23 -050046struct selabel_handle *sehandle;
47
Doug Zongker9931f7f2009-06-10 14:11:53 -070048int main(int argc, char** argv) {
Doug Zongker512536a2010-02-17 16:11:44 -080049 // Various things log information to stdout or stderr more or less
Doug Zongkerfafc85b2013-07-09 12:29:45 -070050 // at random (though we've tried to standardize on stdout). The
51 // log file makes more sense if buffering is turned off so things
52 // appear in the right order.
Doug Zongker512536a2010-02-17 16:11:44 -080053 setbuf(stdout, NULL);
54 setbuf(stderr, NULL);
55
Tianjie Xu7ce287d2016-05-31 09:29:49 -070056 if (argc != 4 && argc != 5) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070057 printf("unexpected number of arguments (%d)\n", argc);
Doug Zongker9931f7f2009-06-10 14:11:53 -070058 return 1;
59 }
60
61 char* version = argv[1];
Doug Zongkere08991e2010-02-02 13:09:52 -080062 if ((version[0] != '1' && version[0] != '2' && version[0] != '3') ||
63 version[1] != '\0') {
64 // We support version 1, 2, or 3.
Doug Zongkerfafc85b2013-07-09 12:29:45 -070065 printf("wrong updater binary API; expected 1, 2, or 3; "
Doug Zongkere08991e2010-02-02 13:09:52 -080066 "got %s\n",
Doug Zongkerfb2e3af2009-06-17 17:29:40 -070067 argv[1]);
Doug Zongker9931f7f2009-06-10 14:11:53 -070068 return 2;
69 }
70
71 // Set up the pipe for sending commands back to the parent process.
72
73 int fd = atoi(argv[2]);
74 FILE* cmd_pipe = fdopen(fd, "wb");
75 setlinebuf(cmd_pipe);
76
77 // Extract the script from the package.
78
Doug Zongker99916f02014-01-13 14:16:58 -080079 const char* package_filename = argv[3];
80 MemMapping map;
81 if (sysMapFile(package_filename, &map) != 0) {
82 printf("failed to map package %s\n", argv[3]);
83 return 3;
84 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070085 ZipArchive za;
86 int err;
Doug Zongker99916f02014-01-13 14:16:58 -080087 err = mzOpenZipArchive(map.addr, map.length, &za);
Doug Zongker9931f7f2009-06-10 14:11:53 -070088 if (err != 0) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070089 printf("failed to open package %s: %s\n",
Doug Zongker99916f02014-01-13 14:16:58 -080090 argv[3], strerror(err));
Doug Zongker9931f7f2009-06-10 14:11:53 -070091 return 3;
92 }
Jed Estep39c1b5e2015-12-15 16:04:53 -080093 ota_io_init(&za);
Doug Zongker9931f7f2009-06-10 14:11:53 -070094
95 const ZipEntry* script_entry = mzFindZipEntry(&za, SCRIPT_NAME);
96 if (script_entry == NULL) {
Doug Zongker99916f02014-01-13 14:16:58 -080097 printf("failed to find %s in %s\n", SCRIPT_NAME, package_filename);
Doug Zongker9931f7f2009-06-10 14:11:53 -070098 return 4;
99 }
100
Tao Baoba9a42a2015-06-23 23:23:33 -0700101 char* script = reinterpret_cast<char*>(malloc(script_entry->uncompLen+1));
Doug Zongker9931f7f2009-06-10 14:11:53 -0700102 if (!mzReadZipEntry(&za, script_entry, script, script_entry->uncompLen)) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700103 printf("failed to read script from package\n");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700104 return 5;
105 }
106 script[script_entry->uncompLen] = '\0';
107
108 // Configure edify's functions.
109
110 RegisterBuiltins();
111 RegisterInstallFunctions();
Doug Zongkerbc7ffed2014-08-15 14:31:52 -0700112 RegisterBlockImageFunctions();
Doug Zongker2b0fdc62009-06-19 11:22:06 -0700113 RegisterDeviceExtensions();
Doug Zongker9931f7f2009-06-10 14:11:53 -0700114 FinishRegistration();
115
116 // Parse the script.
117
118 Expr* root;
Doug Zongker8edb00c2009-06-11 17:21:44 -0700119 int error_count = 0;
Doug Zongker0d32f252014-02-13 15:07:56 -0800120 int error = parse_string(script, &root, &error_count);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700121 if (error != 0 || error_count > 0) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700122 printf("%d parse errors\n", error_count);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700123 return 6;
124 }
125
Stephen Smalley779701d2012-02-09 14:13:23 -0500126 struct selinux_opt seopts[] = {
127 { SELABEL_OPT_PATH, "/file_contexts" }
128 };
129
130 sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
131
132 if (!sehandle) {
Stephen Smalley779701d2012-02-09 14:13:23 -0500133 fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
134 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500135
Doug Zongker9931f7f2009-06-10 14:11:53 -0700136 // Evaluate the parsed script.
137
138 UpdaterInfo updater_info;
139 updater_info.cmd_pipe = cmd_pipe;
140 updater_info.package_zip = &za;
Doug Zongkere08991e2010-02-02 13:09:52 -0800141 updater_info.version = atoi(version);
Doug Zongkerbc7ffed2014-08-15 14:31:52 -0700142 updater_info.package_zip_addr = map.addr;
143 updater_info.package_zip_len = map.length;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700144
Tao Bao59dcb9c2016-10-03 18:06:46 -0700145 State state(script, &updater_info);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700146
Tianjie Xu7ce287d2016-05-31 09:29:49 -0700147 if (argc == 5) {
148 if (strcmp(argv[4], "retry") == 0) {
149 state.is_retry = true;
150 } else {
151 printf("unexpected argument: %s", argv[4]);
152 }
153 }
154
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700155 char* result = Evaluate(&state, root);
Tianjie Xu3c62b672016-02-05 18:25:58 -0800156
157 if (have_eio_error) {
158 fprintf(cmd_pipe, "retry_update\n");
159 }
160
Doug Zongker9931f7f2009-06-10 14:11:53 -0700161 if (result == NULL) {
Tao Bao59dcb9c2016-10-03 18:06:46 -0700162 if (state.errmsg.empty()) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700163 printf("script aborted (no error message)\n");
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700164 fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
165 } else {
Tao Bao59dcb9c2016-10-03 18:06:46 -0700166 printf("script aborted: %s\n", state.errmsg.c_str());
167 const std::vector<std::string> lines = android::base::Split(state.errmsg, "\n");
168 for (const std::string& line : lines) {
Tianjie Xu16255832016-04-30 11:49:59 -0700169 // Parse the error code in abort message.
170 // Example: "E30: This package is for bullhead devices."
Tao Bao59dcb9c2016-10-03 18:06:46 -0700171 if (!line.empty() && line[0] == 'E') {
172 if (sscanf(line.c_str(), "E%u: ", &state.error_code) != 1) {
173 printf("Failed to parse error code: [%s]\n", line.c_str());
Tianjie Xu16255832016-04-30 11:49:59 -0700174 }
175 }
Tao Bao59dcb9c2016-10-03 18:06:46 -0700176 fprintf(cmd_pipe, "ui_print %s\n", line.c_str());
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700177 }
178 fprintf(cmd_pipe, "ui_print\n");
179 }
Tianjie Xu16255832016-04-30 11:49:59 -0700180
181 if (state.error_code != kNoError) {
182 fprintf(cmd_pipe, "log error: %d\n", state.error_code);
183 // Cause code should provide additional information about the abort;
184 // report only when an error exists.
185 if (state.cause_code != kNoCause) {
186 fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
187 }
188 }
189
Doug Zongker9931f7f2009-06-10 14:11:53 -0700190 return 7;
191 } else {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700192 fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700193 free(result);
194 }
195
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700196 if (updater_info.package_zip) {
197 mzCloseZipArchive(updater_info.package_zip);
198 }
Doug Zongker99916f02014-01-13 14:16:58 -0800199 sysReleaseMap(&map);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700200 free(script);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700201
202 return 0;
203}