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1 /* | |
2 * libjingle | |
3 * Copyright 2004--2005, Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 */ | |
27 | |
28 #define _CRT_SECURE_NO_DEPRECATE 1 | |
29 | |
30 #include <assert.h> | |
31 | |
32 #if defined(WEBRTC_POSIX) | |
33 #include <signal.h> | |
34 #include <termios.h> | |
35 #include <unistd.h> | |
36 #endif // WEBRTC_POSIX | |
37 | |
38 #include "talk/examples/call/callclient.h" | |
39 #include "talk/examples/call/console.h" | |
40 #include "webrtc/base/logging.h" | |
41 #include "webrtc/base/messagequeue.h" | |
42 #include "webrtc/base/stringutils.h" | |
43 | |
44 #ifdef WEBRTC_POSIX | |
45 static void DoNothing(int unused) {} | |
46 #endif | |
47 | |
48 Console::Console(rtc::Thread *thread, CallClient *client) : | |
49 client_(client), | |
50 client_thread_(thread), | |
51 stopped_(false) {} | |
52 | |
53 Console::~Console() { | |
54 Stop(); | |
55 } | |
56 | |
57 void Console::Start() { | |
58 if (stopped_) { | |
59 // stdin was closed in Stop(), so we can't restart. | |
60 LOG(LS_ERROR) << "Cannot re-start"; | |
61 return; | |
62 } | |
63 if (console_thread_) { | |
64 LOG(LS_WARNING) << "Already started"; | |
65 return; | |
66 } | |
67 console_thread_.reset(new rtc::Thread()); | |
68 console_thread_->Start(); | |
69 console_thread_->Post(this, MSG_START); | |
70 } | |
71 | |
72 void Console::Stop() { | |
73 if (console_thread_) { | |
74 #ifdef WIN32 | |
75 CloseHandle(GetStdHandle(STD_INPUT_HANDLE)); | |
76 #else | |
77 close(fileno(stdin)); | |
78 // This forces the read() in fgets() to return with errno = EINTR. fgets() | |
79 // will retry the read() and fail, thus returning. | |
80 pthread_kill(console_thread_->GetPThread(), SIGUSR1); | |
81 #endif | |
82 console_thread_->Stop(); | |
83 console_thread_.reset(); | |
84 stopped_ = true; | |
85 } | |
86 } | |
87 | |
88 void Console::SetEcho(bool on) { | |
89 #ifdef WIN32 | |
90 HANDLE hIn = GetStdHandle(STD_INPUT_HANDLE); | |
91 if ((hIn == INVALID_HANDLE_VALUE) || (hIn == NULL)) | |
92 return; | |
93 | |
94 DWORD mode; | |
95 if (!GetConsoleMode(hIn, &mode)) | |
96 return; | |
97 | |
98 if (on) { | |
99 mode = mode | ENABLE_ECHO_INPUT; | |
100 } else { | |
101 mode = mode & ~ENABLE_ECHO_INPUT; | |
102 } | |
103 | |
104 SetConsoleMode(hIn, mode); | |
105 #else | |
106 const int fd = fileno(stdin); | |
107 if (fd == -1) | |
108 return; | |
109 | |
110 struct termios tcflags; | |
111 if (tcgetattr(fd, &tcflags) == -1) | |
112 return; | |
113 | |
114 if (on) { | |
115 tcflags.c_lflag |= ECHO; | |
116 } else { | |
117 tcflags.c_lflag &= ~ECHO; | |
118 } | |
119 | |
120 tcsetattr(fd, TCSANOW, &tcflags); | |
121 #endif | |
122 } | |
123 | |
124 void Console::PrintLine(const char* format, ...) { | |
125 va_list ap; | |
126 va_start(ap, format); | |
127 | |
128 char buf[4096]; | |
129 int size = vsnprintf(buf, sizeof(buf), format, ap); | |
130 assert(size >= 0); | |
131 assert(size < static_cast<int>(sizeof(buf))); | |
132 buf[size] = '\0'; | |
133 printf("%s\n", buf); | |
134 fflush(stdout); | |
135 | |
136 va_end(ap); | |
137 } | |
138 | |
139 void Console::RunConsole() { | |
140 char input_buffer[128]; | |
141 while (fgets(input_buffer, sizeof(input_buffer), stdin) != NULL) { | |
142 client_thread_->Post(this, MSG_INPUT, | |
143 new rtc::TypedMessageData<std::string>(input_buffer)); | |
144 } | |
145 } | |
146 | |
147 void Console::OnMessage(rtc::Message *msg) { | |
148 switch (msg->message_id) { | |
149 case MSG_START: | |
150 #if defined(WEBRTC_POSIX) | |
151 // Install a no-op signal so that we can abort RunConsole() by raising | |
152 // SIGUSR1. | |
153 struct sigaction act; | |
154 act.sa_handler = &DoNothing; | |
155 sigemptyset(&act.sa_mask); | |
156 act.sa_flags = 0; | |
157 if (sigaction(SIGUSR1, &act, NULL) < 0) { | |
158 LOG(LS_WARNING) << "Can't install signal"; | |
159 } | |
160 #endif | |
161 RunConsole(); | |
162 break; | |
163 case MSG_INPUT: | |
164 rtc::TypedMessageData<std::string> *data = | |
165 static_cast<rtc::TypedMessageData<std::string>*>(msg->pdata); | |
166 client_->ParseLine(data->data()); | |
167 break; | |
168 } | |
169 } | |
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