1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2004-2006 Lennart Poettering
5
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
10
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <assert.h>
25 #include <signal.h>
26 #include <sys/socket.h>
27 #include <unistd.h>
28 #include <errno.h>
29 #include <string.h>
30 #include <sys/un.h>
31 #include <getopt.h>
32 #include <locale.h>
33
34 #include <pulse/util.h>
35 #include <pulse/xmalloc.h>
36
37 #include <pulsecore/i18n.h>
38 #include <pulsecore/poll.h>
39 #include <pulsecore/macro.h>
40 #include <pulsecore/core-util.h>
41 #include <pulsecore/log.h>
42 #include <pulsecore/pid.h>
43
help(const char * argv0)44 static void help(const char *argv0) {
45 printf("%s %s\n", argv0, "exit");
46 printf("%s %s\n", argv0, "help");
47 printf("%s %s\n", argv0, "list-(modules|sinks|sources|clients|cards|samples)");
48 printf("%s %s\n", argv0, "list-(sink-inputs|source-outputs)");
49 printf("%s %s\n", argv0, "stat");
50 printf("%s %s\n", argv0, "info");
51 printf("%s %s %s\n", argv0, "load-module", _("NAME [ARGS ...]"));
52 printf("%s %s %s\n", argv0, "unload-module", _("NAME|#N"));
53 printf("%s %s %s\n", argv0, "describe-module", _("NAME"));
54 printf("%s %s %s\n", argv0, "set-(sink|source)-volume", _("NAME|#N VOLUME"));
55 printf("%s %s %s\n", argv0, "set-(sink-input|source-output)-volume", _("#N VOLUME"));
56 printf("%s %s %s\n", argv0, "set-(sink|source)-mute", _("NAME|#N 1|0"));
57 printf("%s %s %s\n", argv0, "set-(sink-input|source-output)-mute", _("#N 1|0"));
58 printf("%s %s %s\n", argv0, "update-(sink|source)-proplist", _("NAME|#N KEY=VALUE"));
59 printf("%s %s %s\n", argv0, "update-(sink-input|source-output)-proplist", _("#N KEY=VALUE"));
60 printf("%s %s %s\n", argv0, "set-default-(sink|source)", _("NAME|#N"));
61 printf("%s %s %s\n", argv0, "kill-(client|sink-input|source-output)", _("#N"));
62 printf("%s %s %s\n", argv0, "play-sample", _("NAME SINK|#N"));
63 printf("%s %s %s\n", argv0, "remove-sample", _("NAME"));
64 printf("%s %s %s\n", argv0, "load-sample", _("NAME FILENAME"));
65 printf("%s %s %s\n", argv0, "load-sample-lazy", _("NAME FILENAME"));
66 printf("%s %s %s\n", argv0, "load-sample-dir-lazy", _("PATHNAME"));
67 printf("%s %s %s\n", argv0, "play-file", _("FILENAME SINK|#N"));
68 printf("%s %s\n", argv0, "dump");
69 printf("%s %s %s\n", argv0, "move-(sink-input|source-output)", _("#N SINK|SOURCE"));
70 printf("%s %s %s\n", argv0, "suspend-(sink|source)", _("NAME|#N 1|0"));
71 printf("%s %s %s\n", argv0, "suspend", _("1|0"));
72 printf("%s %s %s\n", argv0, "set-card-profile", _("CARD PROFILE"));
73 printf("%s %s %s\n", argv0, "set-(sink|source)-port", _("NAME|#N PORT"));
74 printf("%s %s %s\n", argv0, "set-port-latency-offset", _("CARD-NAME|CARD-#N PORT OFFSET"));
75 printf("%s %s %s\n", argv0, "set-log-target", _("TARGET"));
76 printf("%s %s %s\n", argv0, "set-log-level", _("NUMERIC-LEVEL"));
77 printf("%s %s %s\n", argv0, "set-log-meta", _("1|0"));
78 printf("%s %s %s\n", argv0, "set-log-time", _("1|0"));
79 printf("%s %s %s\n", argv0, "set-log-backtrace", _("FRAMES"));
80 printf("%s %s %s\n", argv0, "send-message", _("RECIPIENT MESSAGE [MESSAGE_PARAMETERS]"));
81
82 printf(_("\n"
83 " -h, --help Show this help\n"
84 " --version Show version\n"
85 "When no command is given pacmd starts in the interactive mode.\n" ));
86 }
87
88 enum {
89 ARG_VERSION = 256
90 };
91
main(int argc,char * argv[])92 int main(int argc, char*argv[]) {
93 pid_t pid;
94 int fd = -1;
95 int ret = 1, i;
96 struct sockaddr_un sa;
97 char *ibuf = NULL;
98 char *obuf = NULL;
99 size_t buf_size, ibuf_size, ibuf_index, ibuf_length, obuf_size, obuf_index, obuf_length;
100 char *cli;
101 bool ibuf_eof, obuf_eof, ibuf_closed, obuf_closed;
102 struct pollfd pollfd[3];
103 struct pollfd *watch_socket, *watch_stdin, *watch_stdout;
104 int stdin_type = 0, stdout_type = 0, fd_type = 0;
105
106 char *bn = NULL;
107 int c;
108
109 static const struct option long_options[] = {
110 {"version", 0, NULL, ARG_VERSION},
111 {"help", 0, NULL, 'h'},
112 {NULL, 0, NULL, 0}
113 };
114
115 setlocale(LC_ALL, "");
116 #ifdef ENABLE_NLS
117 bindtextdomain(GETTEXT_PACKAGE, PULSE_LOCALEDIR);
118 #endif
119
120 bn = pa_path_get_filename(argv[0]);
121
122 while ((c = getopt_long(argc, argv, "h", long_options, NULL)) != -1) {
123 switch (c) {
124 case 'h' :
125 help(bn);
126 ret = 0;
127 goto quit;
128 case ARG_VERSION:
129 printf(_("pacmd %s\n"
130 "Compiled with libpulse %s\n"
131 "Linked with libpulse %s\n"),
132 PACKAGE_VERSION,
133 pa_get_headers_version(),
134 pa_get_library_version());
135 ret = 0;
136 goto quit;
137 default:
138 goto quit;
139 }
140 }
141
142 if (pa_pid_file_check_running(&pid, "pulseaudio") < 0) {
143 pa_log(_("No PulseAudio daemon running, or not running as session daemon."));
144 goto quit;
145 }
146
147 if ((fd = pa_socket_cloexec(PF_UNIX, SOCK_STREAM, 0)) < 0) {
148 pa_log(_("socket(PF_UNIX, SOCK_STREAM, 0): %s"), strerror(errno));
149 goto quit;
150 }
151
152 pa_zero(sa);
153 sa.sun_family = AF_UNIX;
154
155 if (!(cli = pa_runtime_path("cli")))
156 goto quit;
157
158 pa_strlcpy(sa.sun_path, cli, sizeof(sa.sun_path));
159 pa_xfree(cli);
160
161 for (i = 0; i < 5; i++) {
162 int r;
163
164 if ((r = connect(fd, (struct sockaddr*) &sa, sizeof(sa))) < 0 && (errno != ECONNREFUSED && errno != ENOENT)) {
165 pa_log(_("connect(): %s"), strerror(errno));
166 goto quit;
167 }
168
169 if (r >= 0)
170 break;
171
172 if (pa_pid_file_kill(SIGUSR2, NULL, "pulseaudio") < 0) {
173 pa_log(_("Failed to kill PulseAudio daemon."));
174 goto quit;
175 }
176
177 pa_msleep(300);
178 }
179
180 if (i >= 5) {
181 pa_log(_("Daemon not responding."));
182 goto quit;
183 }
184
185 buf_size = pa_pipe_buf(fd);
186 ibuf_size = PA_MIN(buf_size, pa_pipe_buf(STDIN_FILENO));
187 ibuf = pa_xmalloc(ibuf_size);
188 obuf_size = PA_MIN(buf_size, pa_pipe_buf(STDOUT_FILENO));
189 obuf = pa_xmalloc(obuf_size);
190 ibuf_index = ibuf_length = obuf_index = obuf_length = 0;
191 ibuf_eof = obuf_eof = ibuf_closed = obuf_closed = false;
192
193 if (argc > 1) {
194 for (i = 1; i < argc; i++) {
195 size_t k;
196
197 k = PA_MIN(ibuf_size - ibuf_length, strlen(argv[i]));
198 memcpy(ibuf + ibuf_length, argv[i], k);
199 ibuf_length += k;
200
201 if (ibuf_length < ibuf_size) {
202 ibuf[ibuf_length] = i < argc-1 ? ' ' : '\n';
203 ibuf_length++;
204 }
205 }
206
207 ibuf_eof = true;
208 }
209
210 if (!ibuf_eof && isatty(STDIN_FILENO)) {
211 /* send hello to enable interactive mode (welcome message, prompt) */
212 if (pa_write(fd, "hello\n", 6, &fd_type) < 0) {
213 pa_log(_("write(): %s"), strerror(errno));
214 goto quit;
215 }
216 }
217
218 for (;;) {
219 struct pollfd *p;
220
221 if (ibuf_eof &&
222 obuf_eof &&
223 ibuf_length <= 0 &&
224 obuf_length <= 0)
225 break;
226
227 if (ibuf_length <= 0 && ibuf_eof && !ibuf_closed) {
228 shutdown(fd, SHUT_WR);
229 ibuf_closed = true;
230 }
231
232 if (obuf_length <= 0 && obuf_eof && !obuf_closed) {
233 shutdown(fd, SHUT_RD);
234 obuf_closed = true;
235 }
236
237 pa_zero(pollfd);
238
239 p = pollfd;
240
241 if (ibuf_length > 0 || (!obuf_eof && obuf_length <= 0)) {
242 watch_socket = p++;
243 watch_socket->fd = fd;
244 watch_socket->events =
245 (ibuf_length > 0 ? POLLOUT : 0) |
246 (!obuf_eof && obuf_length <= 0 ? POLLIN : 0);
247 } else
248 watch_socket = NULL;
249
250 if (!ibuf_eof && ibuf_length <= 0) {
251 watch_stdin = p++;
252 watch_stdin->fd = STDIN_FILENO;
253 watch_stdin->events = POLLIN;
254 } else
255 watch_stdin = NULL;
256
257 if (obuf_length > 0) {
258 watch_stdout = p++;
259 watch_stdout->fd = STDOUT_FILENO;
260 watch_stdout->events = POLLOUT;
261 } else
262 watch_stdout = NULL;
263
264 if (pa_poll(pollfd, p-pollfd, -1) < 0) {
265
266 if (errno == EINTR)
267 continue;
268
269 pa_log(_("poll(): %s"), strerror(errno));
270 goto quit;
271 }
272
273 if (watch_stdin) {
274 if (watch_stdin->revents & POLLIN) {
275 ssize_t r;
276 pa_assert(ibuf_length <= 0);
277
278 if ((r = pa_read(STDIN_FILENO, ibuf, ibuf_size, &stdin_type)) <= 0) {
279 if (r < 0) {
280 pa_log(_("read(): %s"), strerror(errno));
281 goto quit;
282 }
283
284 ibuf_eof = true;
285 } else {
286 ibuf_length = (size_t) r;
287 ibuf_index = 0;
288 }
289 } else if (watch_stdin->revents & POLLHUP)
290 ibuf_eof = true;
291 }
292
293 if (watch_socket) {
294 if (watch_socket->revents & POLLIN) {
295 ssize_t r;
296 pa_assert(obuf_length <= 0);
297
298 if ((r = pa_read(fd, obuf, obuf_size, &fd_type)) <= 0) {
299 if (r < 0) {
300 pa_log(_("read(): %s"), strerror(errno));
301 goto quit;
302 }
303
304 obuf_eof = true;
305 } else {
306 obuf_length = (size_t) r;
307 obuf_index = 0;
308 }
309 } else if (watch_socket->revents & POLLHUP)
310 obuf_eof = true;
311 }
312
313 if (watch_stdout) {
314 if (watch_stdout->revents & POLLHUP) {
315 obuf_eof = true;
316 obuf_length = 0;
317 } else if (watch_stdout->revents & POLLOUT) {
318 ssize_t r;
319 pa_assert(obuf_length > 0);
320
321 if ((r = pa_write(STDOUT_FILENO, obuf + obuf_index, obuf_length, &stdout_type)) < 0) {
322 pa_log(_("write(): %s"), strerror(errno));
323 goto quit;
324 }
325
326 obuf_length -= (size_t) r;
327 obuf_index += obuf_index;
328 }
329 }
330
331 if (watch_socket) {
332 if (watch_socket->revents & POLLHUP) {
333 ibuf_eof = true;
334 ibuf_length = 0;
335 } else if (watch_socket->revents & POLLOUT) {
336 ssize_t r;
337 pa_assert(ibuf_length > 0);
338
339 if ((r = pa_write(fd, ibuf + ibuf_index, ibuf_length, &fd_type)) < 0) {
340 pa_log(_("write(): %s"), strerror(errno));
341 goto quit;
342 }
343
344 ibuf_length -= (size_t) r;
345 ibuf_index += obuf_index;
346 }
347 }
348 }
349
350 ret = 0;
351
352 quit:
353 if (fd >= 0)
354 pa_close(fd);
355
356 pa_xfree(obuf);
357 pa_xfree(ibuf);
358
359 return ret;
360 }
361