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
81 printf(_("\n"
82 " -h, --help Show this help\n"
83 " --version Show version\n"
84 "When no command is given pacmd starts in the interactive mode.\n" ));
85 }
86
87 enum {
88 ARG_VERSION = 256
89 };
90
main(int argc,char * argv[])91 int main(int argc, char*argv[]) {
92 pid_t pid;
93 int fd = -1;
94 int ret = 1, i;
95 struct sockaddr_un sa;
96 char *ibuf = NULL;
97 char *obuf = NULL;
98 size_t buf_size, ibuf_size, ibuf_index, ibuf_length, obuf_size, obuf_index, obuf_length;
99 char *cli;
100 bool ibuf_eof, obuf_eof, ibuf_closed, obuf_closed;
101 struct pollfd pollfd[3];
102 struct pollfd *watch_socket, *watch_stdin, *watch_stdout;
103 int stdin_type = 0, stdout_type = 0, fd_type = 0;
104
105 char *bn = NULL;
106 int c;
107
108 static const struct option long_options[] = {
109 {"version", 0, NULL, ARG_VERSION},
110 {"help", 0, NULL, 'h'},
111 {NULL, 0, NULL, 0}
112 };
113
114 setlocale(LC_ALL, "");
115 #ifdef ENABLE_NLS
116 bindtextdomain(GETTEXT_PACKAGE, PULSE_LOCALEDIR);
117 #endif
118
119 bn = pa_path_get_filename(argv[0]);
120
121 while ((c = getopt_long(argc, argv, "h", long_options, NULL)) != -1) {
122 switch (c) {
123 case 'h' :
124 help(bn);
125 ret = 0;
126 goto quit;
127 case ARG_VERSION:
128 printf(_("pacmd %s\n"
129 "Compiled with libpulse %s\n"
130 "Linked with libpulse %s\n"),
131 PACKAGE_VERSION,
132 pa_get_headers_version(),
133 pa_get_library_version());
134 ret = 0;
135 goto quit;
136 default:
137 goto quit;
138 }
139 }
140
141 if (pa_pid_file_check_running(&pid, "pulseaudio") < 0) {
142 pa_log(_("No PulseAudio daemon running, or not running as session daemon."));
143 goto quit;
144 }
145
146 if ((fd = pa_socket_cloexec(PF_UNIX, SOCK_STREAM, 0)) < 0) {
147 pa_log(_("socket(PF_UNIX, SOCK_STREAM, 0): %s"), strerror(errno));
148 goto quit;
149 }
150
151 pa_zero(sa);
152 sa.sun_family = AF_UNIX;
153
154 if (!(cli = pa_runtime_path("cli")))
155 goto quit;
156
157 pa_strlcpy(sa.sun_path, cli, sizeof(sa.sun_path));
158 pa_xfree(cli);
159
160 for (i = 0; i < 5; i++) {
161 int r;
162
163 if ((r = connect(fd, (struct sockaddr*) &sa, sizeof(sa))) < 0 && (errno != ECONNREFUSED && errno != ENOENT)) {
164 pa_log(_("connect(): %s"), strerror(errno));
165 goto quit;
166 }
167
168 if (r >= 0)
169 break;
170
171 if (pa_pid_file_kill(SIGUSR2, NULL, "pulseaudio") < 0) {
172 pa_log(_("Failed to kill PulseAudio daemon."));
173 goto quit;
174 }
175
176 pa_msleep(300);
177 }
178
179 if (i >= 5) {
180 pa_log(_("Daemon not responding."));
181 goto quit;
182 }
183
184 buf_size = pa_pipe_buf(fd);
185 ibuf_size = PA_MIN(buf_size, pa_pipe_buf(STDIN_FILENO));
186 ibuf = pa_xmalloc(ibuf_size);
187 obuf_size = PA_MIN(buf_size, pa_pipe_buf(STDOUT_FILENO));
188 obuf = pa_xmalloc(obuf_size);
189 ibuf_index = ibuf_length = obuf_index = obuf_length = 0;
190 ibuf_eof = obuf_eof = ibuf_closed = obuf_closed = false;
191
192 if (argc > 1) {
193 for (i = 1; i < argc; i++) {
194 size_t k;
195
196 k = PA_MIN(ibuf_size - ibuf_length, strlen(argv[i]));
197 memcpy(ibuf + ibuf_length, argv[i], k);
198 ibuf_length += k;
199
200 if (ibuf_length < ibuf_size) {
201 ibuf[ibuf_length] = i < argc-1 ? ' ' : '\n';
202 ibuf_length++;
203 }
204 }
205
206 ibuf_eof = true;
207 }
208
209 if (!ibuf_eof && isatty(STDIN_FILENO)) {
210 /* send hello to enable interactive mode (welcome message, prompt) */
211 if (pa_write(fd, "hello\n", 6, &fd_type) < 0) {
212 pa_log(_("write(): %s"), strerror(errno));
213 goto quit;
214 }
215 }
216
217 for (;;) {
218 struct pollfd *p;
219
220 if (ibuf_eof &&
221 obuf_eof &&
222 ibuf_length <= 0 &&
223 obuf_length <= 0)
224 break;
225
226 if (ibuf_length <= 0 && ibuf_eof && !ibuf_closed) {
227 shutdown(fd, SHUT_WR);
228 ibuf_closed = true;
229 }
230
231 if (obuf_length <= 0 && obuf_eof && !obuf_closed) {
232 shutdown(fd, SHUT_RD);
233 obuf_closed = true;
234 }
235
236 pa_zero(pollfd);
237
238 p = pollfd;
239
240 if (ibuf_length > 0 || (!obuf_eof && obuf_length <= 0)) {
241 watch_socket = p++;
242 watch_socket->fd = fd;
243 watch_socket->events =
244 (ibuf_length > 0 ? POLLOUT : 0) |
245 (!obuf_eof && obuf_length <= 0 ? POLLIN : 0);
246 } else
247 watch_socket = NULL;
248
249 if (!ibuf_eof && ibuf_length <= 0) {
250 watch_stdin = p++;
251 watch_stdin->fd = STDIN_FILENO;
252 watch_stdin->events = POLLIN;
253 } else
254 watch_stdin = NULL;
255
256 if (obuf_length > 0) {
257 watch_stdout = p++;
258 watch_stdout->fd = STDOUT_FILENO;
259 watch_stdout->events = POLLOUT;
260 } else
261 watch_stdout = NULL;
262
263 if (pa_poll(pollfd, p-pollfd, -1) < 0) {
264
265 if (errno == EINTR)
266 continue;
267
268 pa_log(_("poll(): %s"), strerror(errno));
269 goto quit;
270 }
271
272 if (watch_stdin) {
273 if (watch_stdin->revents & POLLIN) {
274 ssize_t r;
275 pa_assert(ibuf_length <= 0);
276
277 if ((r = pa_read(STDIN_FILENO, ibuf, ibuf_size, &stdin_type)) <= 0) {
278 if (r < 0) {
279 pa_log(_("read(): %s"), strerror(errno));
280 goto quit;
281 }
282
283 ibuf_eof = true;
284 } else {
285 ibuf_length = (size_t) r;
286 ibuf_index = 0;
287 }
288 } else if (watch_stdin->revents & POLLHUP)
289 ibuf_eof = true;
290 }
291
292 if (watch_socket) {
293 if (watch_socket->revents & POLLIN) {
294 ssize_t r;
295 pa_assert(obuf_length <= 0);
296
297 if ((r = pa_read(fd, obuf, obuf_size, &fd_type)) <= 0) {
298 if (r < 0) {
299 pa_log(_("read(): %s"), strerror(errno));
300 goto quit;
301 }
302
303 obuf_eof = true;
304 } else {
305 obuf_length = (size_t) r;
306 obuf_index = 0;
307 }
308 } else if (watch_socket->revents & POLLHUP)
309 obuf_eof = true;
310 }
311
312 if (watch_stdout) {
313 if (watch_stdout->revents & POLLHUP) {
314 obuf_eof = true;
315 obuf_length = 0;
316 } else if (watch_stdout->revents & POLLOUT) {
317 ssize_t r;
318 pa_assert(obuf_length > 0);
319
320 if ((r = pa_write(STDOUT_FILENO, obuf + obuf_index, obuf_length, &stdout_type)) < 0) {
321 pa_log(_("write(): %s"), strerror(errno));
322 goto quit;
323 }
324
325 obuf_length -= (size_t) r;
326 obuf_index += obuf_index;
327 }
328 }
329
330 if (watch_socket) {
331 if (watch_socket->revents & POLLHUP) {
332 ibuf_eof = true;
333 ibuf_length = 0;
334 } else if (watch_socket->revents & POLLOUT) {
335 ssize_t r;
336 pa_assert(ibuf_length > 0);
337
338 if ((r = pa_write(fd, ibuf + ibuf_index, ibuf_length, &fd_type)) < 0) {
339 pa_log(_("write(): %s"), strerror(errno));
340 goto quit;
341 }
342
343 ibuf_length -= (size_t) r;
344 ibuf_index += obuf_index;
345 }
346 }
347 }
348
349 ret = 0;
350
351 quit:
352 if (fd >= 0)
353 pa_close(fd);
354
355 pa_xfree(obuf);
356 pa_xfree(ibuf);
357
358 return ret;
359 }
360