blob: 0f22e6d046d621702c9b96865f6b2e46eddeb876 [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
17#include <stdio.h>
18#include <unistd.h>
19#include <stdlib.h>
Elliott Hughescd3c55a2015-01-29 20:50:08 -080020#include <string.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070021
22#include "edify/expr.h"
23#include "updater.h"
24#include "install.h"
Doug Zongkerbc7ffed2014-08-15 14:31:52 -070025#include "blockimg.h"
Doug Zongker9931f7f2009-06-10 14:11:53 -070026#include "minzip/Zip.h"
Doug Zongker99916f02014-01-13 14:16:58 -080027#include "minzip/SysUtil.h"
Doug Zongker9931f7f2009-06-10 14:11:53 -070028
Doug Zongker2b0fdc62009-06-19 11:22:06 -070029// Generated by the makefile, this function defines the
30// RegisterDeviceExtensions() function, which calls all the
31// registration functions for device-specific extensions.
32#include "register.inc"
33
Doug Zongker9931f7f2009-06-10 14:11:53 -070034// Where in the package we expect to find the edify script to execute.
35// (Note it's "updateR-script", not the older "update-script".)
36#define SCRIPT_NAME "META-INF/com/google/android/updater-script"
37
Stephen Smalley779701d2012-02-09 14:13:23 -050038struct selabel_handle *sehandle;
39
Doug Zongker9931f7f2009-06-10 14:11:53 -070040int main(int argc, char** argv) {
Doug Zongker512536a2010-02-17 16:11:44 -080041 // Various things log information to stdout or stderr more or less
Doug Zongkerfafc85b2013-07-09 12:29:45 -070042 // at random (though we've tried to standardize on stdout). The
43 // log file makes more sense if buffering is turned off so things
44 // appear in the right order.
Doug Zongker512536a2010-02-17 16:11:44 -080045 setbuf(stdout, NULL);
46 setbuf(stderr, NULL);
47
Doug Zongker9931f7f2009-06-10 14:11:53 -070048 if (argc != 4) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070049 printf("unexpected number of arguments (%d)\n", argc);
Doug Zongker9931f7f2009-06-10 14:11:53 -070050 return 1;
51 }
52
53 char* version = argv[1];
Doug Zongkere08991e2010-02-02 13:09:52 -080054 if ((version[0] != '1' && version[0] != '2' && version[0] != '3') ||
55 version[1] != '\0') {
56 // We support version 1, 2, or 3.
Doug Zongkerfafc85b2013-07-09 12:29:45 -070057 printf("wrong updater binary API; expected 1, 2, or 3; "
Doug Zongkere08991e2010-02-02 13:09:52 -080058 "got %s\n",
Doug Zongkerfb2e3af2009-06-17 17:29:40 -070059 argv[1]);
Doug Zongker9931f7f2009-06-10 14:11:53 -070060 return 2;
61 }
62
63 // Set up the pipe for sending commands back to the parent process.
64
65 int fd = atoi(argv[2]);
66 FILE* cmd_pipe = fdopen(fd, "wb");
67 setlinebuf(cmd_pipe);
68
69 // Extract the script from the package.
70
Doug Zongker99916f02014-01-13 14:16:58 -080071 const char* package_filename = argv[3];
72 MemMapping map;
73 if (sysMapFile(package_filename, &map) != 0) {
74 printf("failed to map package %s\n", argv[3]);
75 return 3;
76 }
Doug Zongker9931f7f2009-06-10 14:11:53 -070077 ZipArchive za;
78 int err;
Doug Zongker99916f02014-01-13 14:16:58 -080079 err = mzOpenZipArchive(map.addr, map.length, &za);
Doug Zongker9931f7f2009-06-10 14:11:53 -070080 if (err != 0) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070081 printf("failed to open package %s: %s\n",
Doug Zongker99916f02014-01-13 14:16:58 -080082 argv[3], strerror(err));
Doug Zongker9931f7f2009-06-10 14:11:53 -070083 return 3;
84 }
85
86 const ZipEntry* script_entry = mzFindZipEntry(&za, SCRIPT_NAME);
87 if (script_entry == NULL) {
Doug Zongker99916f02014-01-13 14:16:58 -080088 printf("failed to find %s in %s\n", SCRIPT_NAME, package_filename);
Doug Zongker9931f7f2009-06-10 14:11:53 -070089 return 4;
90 }
91
Tao Baoba9a42a2015-06-23 23:23:33 -070092 char* script = reinterpret_cast<char*>(malloc(script_entry->uncompLen+1));
Doug Zongker9931f7f2009-06-10 14:11:53 -070093 if (!mzReadZipEntry(&za, script_entry, script, script_entry->uncompLen)) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -070094 printf("failed to read script from package\n");
Doug Zongker9931f7f2009-06-10 14:11:53 -070095 return 5;
96 }
97 script[script_entry->uncompLen] = '\0';
98
99 // Configure edify's functions.
100
101 RegisterBuiltins();
102 RegisterInstallFunctions();
Doug Zongkerbc7ffed2014-08-15 14:31:52 -0700103 RegisterBlockImageFunctions();
Doug Zongker2b0fdc62009-06-19 11:22:06 -0700104 RegisterDeviceExtensions();
Doug Zongker9931f7f2009-06-10 14:11:53 -0700105 FinishRegistration();
106
107 // Parse the script.
108
109 Expr* root;
Doug Zongker8edb00c2009-06-11 17:21:44 -0700110 int error_count = 0;
Doug Zongker0d32f252014-02-13 15:07:56 -0800111 int error = parse_string(script, &root, &error_count);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700112 if (error != 0 || error_count > 0) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700113 printf("%d parse errors\n", error_count);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700114 return 6;
115 }
116
Stephen Smalley779701d2012-02-09 14:13:23 -0500117 struct selinux_opt seopts[] = {
118 { SELABEL_OPT_PATH, "/file_contexts" }
119 };
120
121 sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1);
122
123 if (!sehandle) {
Stephen Smalley779701d2012-02-09 14:13:23 -0500124 fprintf(cmd_pipe, "ui_print Warning: No file_contexts\n");
125 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500126
Doug Zongker9931f7f2009-06-10 14:11:53 -0700127 // Evaluate the parsed script.
128
129 UpdaterInfo updater_info;
130 updater_info.cmd_pipe = cmd_pipe;
131 updater_info.package_zip = &za;
Doug Zongkere08991e2010-02-02 13:09:52 -0800132 updater_info.version = atoi(version);
Doug Zongkerbc7ffed2014-08-15 14:31:52 -0700133 updater_info.package_zip_addr = map.addr;
134 updater_info.package_zip_len = map.length;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700135
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700136 State state;
137 state.cookie = &updater_info;
138 state.script = script;
139 state.errmsg = NULL;
140
141 char* result = Evaluate(&state, root);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700142 if (result == NULL) {
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700143 if (state.errmsg == NULL) {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700144 printf("script aborted (no error message)\n");
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700145 fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
146 } else {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700147 printf("script aborted: %s\n", state.errmsg);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700148 char* line = strtok(state.errmsg, "\n");
149 while (line) {
150 fprintf(cmd_pipe, "ui_print %s\n", line);
151 line = strtok(NULL, "\n");
152 }
153 fprintf(cmd_pipe, "ui_print\n");
154 }
155 free(state.errmsg);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700156 return 7;
157 } else {
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700158 fprintf(cmd_pipe, "ui_print script succeeded: result was [%s]\n", result);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700159 free(result);
160 }
161
Doug Zongker8e5e4da2010-09-14 18:06:55 -0700162 if (updater_info.package_zip) {
163 mzCloseZipArchive(updater_info.package_zip);
164 }
Doug Zongker99916f02014-01-13 14:16:58 -0800165 sysReleaseMap(&map);
Doug Zongkerd9c9d102009-06-12 12:24:39 -0700166 free(script);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700167
168 return 0;
169}