1 /*
2 * Copyright (C) 2020 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 #include <android-base/logging.h>
17 #include <android-base/strings.h>
18 #include <sys/socket.h>
19
20 #include "common/libs/fs/shared_buf.h"
21 #include "common/libs/fs/shared_fd.h"
22 #include "host/libs/config/cuttlefish_config.h"
23
24 // Messages are always 128 bytes.
25 #define MESSAGE_SIZE 128
26
27 using cuttlefish::SharedFD;
28
main(int argc,char ** argv)29 int main(int argc, char** argv) {
30 if (argc <= 1) {
31 return 1;
32 }
33
34 // Connect to WebRTC
35 int fd = std::atoi(argv[1]);
36 LOG(INFO) << "Connecting to WebRTC server...";
37 SharedFD webrtc_socket = SharedFD::Dup(fd);
38 close(fd);
39 if (webrtc_socket->IsOpen()) {
40 LOG(INFO) << "Connected";
41 } else {
42 LOG(ERROR) << "Could not connect, exiting...";
43 return 1;
44 }
45
46 // Track state for our two commands.
47 bool statusbar_expanded = false;
48 bool dnd_on = false;
49
50 char buf[MESSAGE_SIZE];
51 while (1) {
52 // Read the command message from the socket.
53 if (!webrtc_socket->IsOpen()) {
54 LOG(WARNING) << "WebRTC was closed.";
55 break;
56 }
57 if (cuttlefish::ReadExact(webrtc_socket, buf, MESSAGE_SIZE) !=
58 MESSAGE_SIZE) {
59 LOG(WARNING) << "Failed to read the correct number of bytes.";
60 break;
61 }
62 auto split = android::base::Split(buf, ":");
63 std::string command = split[0];
64 std::string state = split[1];
65
66 // Ignore button-release events, when state != down.
67 if (state != "down") {
68 continue;
69 }
70
71 // Demonstrate two commands. For demonstration purposes these two
72 // commands use adb shell, but commands can execute any action you choose.
73 std::string adb_shell_command =
74 cuttlefish::HostBinaryPath("adb");
75 if (command == "settings") {
76 adb_shell_command += " shell cmd statusbar ";
77 adb_shell_command += statusbar_expanded ? "collapse" : "expand-settings";
78 statusbar_expanded = !statusbar_expanded;
79 } else if (command == "alert") {
80 adb_shell_command += " shell cmd notification set_dnd ";
81 adb_shell_command += dnd_on ? "off" : "on";
82 dnd_on = !dnd_on;
83 } else {
84 LOG(WARNING) << "Unexpected command: " << buf;
85 }
86
87 if (!adb_shell_command.empty()) {
88 if (system(adb_shell_command.c_str()) != 0) {
89 LOG(ERROR) << "Failed to run command: " << adb_shell_command;
90 }
91 }
92 }
93 }
94