1 /*
2 * Copyright (C) 2019 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 #define TRACE_TAG SERVICES
18
19 #include "sysdeps.h"
20
21 #include <unistd.h>
22
23 #include <android-base/logging.h>
24 #include <android-base/properties.h>
25 #include <android-base/stringprintf.h>
26 #include <log/log_properties.h>
27
28 #include "adb_io.h"
29 #include "adb_unique_fd.h"
30
restart_root_service(unique_fd fd)31 void restart_root_service(unique_fd fd) {
32 if (getuid() == 0) {
33 WriteFdExactly(fd.get(), "adbd is already running as root\n");
34 return;
35 }
36 if (!__android_log_is_debuggable()) {
37 WriteFdExactly(fd.get(), "adbd cannot run as root in production builds\n");
38 return;
39 }
40
41 LOG(INFO) << "adbd restarting as root";
42 android::base::SetProperty("service.adb.root", "1");
43 WriteFdExactly(fd.get(), "restarting adbd as root\n");
44 }
45
restart_unroot_service(unique_fd fd)46 void restart_unroot_service(unique_fd fd) {
47 if (getuid() != 0) {
48 WriteFdExactly(fd.get(), "adbd not running as root\n");
49 return;
50 }
51
52 LOG(INFO) << "adbd restarting as nonroot";
53 android::base::SetProperty("service.adb.root", "0");
54 WriteFdExactly(fd.get(), "restarting adbd as non root\n");
55 }
56
restart_tcp_service(unique_fd fd,int port)57 void restart_tcp_service(unique_fd fd, int port) {
58 if (port <= 0) {
59 WriteFdFmt(fd.get(), "invalid port %d\n", port);
60 return;
61 }
62
63 LOG(INFO) << "adbd restarting in TCP mode (port = " << port << ")";
64 android::base::SetProperty("service.adb.tcp.port", android::base::StringPrintf("%d", port));
65 WriteFdFmt(fd.get(), "restarting in TCP mode port: %d\n", port);
66 }
67
restart_usb_service(unique_fd fd)68 void restart_usb_service(unique_fd fd) {
69 LOG(INFO) << "adbd restarting in USB mode";
70 android::base::SetProperty("service.adb.tcp.port", "0");
71 WriteFdExactly(fd.get(), "restarting in USB mode\n");
72 }
73