1 /*
2 * Copyright (C) 2012 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 <unistd.h>
18 #include <dirent.h>
19 #include <errno.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <sys/types.h>
23 #include <sys/wait.h>
24 #include <sys/stat.h>
25 #include <signal.h>
26 #include <fcntl.h>
27
28 #include "ui.h"
29 #include "cutils/properties.h"
30 #include "install.h"
31 #include "common.h"
32 #include "adb_install.h"
33 extern "C" {
34 #include "minadbd/adb.h"
35 }
36
37 static RecoveryUI* ui = NULL;
38
39 static void
set_usb_driver(bool enabled)40 set_usb_driver(bool enabled) {
41 int fd = open("/sys/class/android_usb/android0/enable", O_WRONLY);
42 if (fd < 0) {
43 ui->Print("failed to open driver control: %s\n", strerror(errno));
44 return;
45 }
46 if (write(fd, enabled ? "1" : "0", 1) < 0) {
47 ui->Print("failed to set driver control: %s\n", strerror(errno));
48 }
49 if (close(fd) < 0) {
50 ui->Print("failed to close driver control: %s\n", strerror(errno));
51 }
52 }
53
54 static void
stop_adbd()55 stop_adbd() {
56 property_set("ctl.stop", "adbd");
57 set_usb_driver(false);
58 }
59
60
61 static void
maybe_restart_adbd()62 maybe_restart_adbd() {
63 char value[PROPERTY_VALUE_MAX+1];
64 int len = property_get("ro.debuggable", value, NULL);
65 if (len == 1 && value[0] == '1') {
66 ui->Print("Restarting adbd...\n");
67 set_usb_driver(true);
68 property_set("ctl.start", "adbd");
69 }
70 }
71
72 int
apply_from_adb(RecoveryUI * ui_,int * wipe_cache,const char * install_file)73 apply_from_adb(RecoveryUI* ui_, int* wipe_cache, const char* install_file) {
74 ui = ui_;
75
76 stop_adbd();
77 set_usb_driver(true);
78
79 ui->Print("\n\nNow send the package you want to apply\n"
80 "to the device with \"adb sideload <filename>\"...\n");
81
82 pid_t child;
83 if ((child = fork()) == 0) {
84 execl("/sbin/recovery", "recovery", "--adbd", NULL);
85 _exit(-1);
86 }
87 int status;
88 // TODO(dougz): there should be a way to cancel waiting for a
89 // package (by pushing some button combo on the device). For now
90 // you just have to 'adb sideload' a file that's not a valid
91 // package, like "/dev/null".
92 waitpid(child, &status, 0);
93 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
94 ui->Print("status %d\n", WEXITSTATUS(status));
95 }
96
97 set_usb_driver(false);
98 maybe_restart_adbd();
99
100 struct stat st;
101 if (stat(ADB_SIDELOAD_FILENAME, &st) != 0) {
102 if (errno == ENOENT) {
103 ui->Print("No package received.\n");
104 } else {
105 ui->Print("Error reading package:\n %s\n", strerror(errno));
106 }
107 return INSTALL_ERROR;
108 }
109 return install_package(ADB_SIDELOAD_FILENAME, wipe_cache, install_file);
110 }
111