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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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