code.delx.au - pulseaudio/blob - src/utils/pacmd.c

   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, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <assert.h>
  27 #include <signal.h>
  28 #include <sys/socket.h>
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #include <string.h>
  32 #include <sys/un.h>
  33 #include <getopt.h>
  34 #include <locale.h>
  35
  36 #include <pulse/util.h>
  37 #include <pulse/xmalloc.h>
  38
  39 #include <pulsecore/i18n.h>
  40 #include <pulsecore/poll.h>
  41 #include <pulsecore/macro.h>
  42 #include <pulsecore/core-util.h>
  43 #include <pulsecore/log.h>
  44 #include <pulsecore/pid.h>
  45
  46 static void help(const char *argv0) {
  47     printf("%s %s\n",    argv0, "exit");
  48     printf("%s %s\n",    argv0, "help");
  49     printf("%s %s\n",    argv0, "list-(modules|sinks|sources|clients|cards|samples)");
  50     printf("%s %s\n",    argv0, "list-(sink-inputs|source-outputs)");
  51     printf("%s %s\n",    argv0, "stat");
  52     printf("%s %s\n",    argv0, "info");
  53     printf("%s %s %s\n", argv0, "load-module", _("NAME [ARGS ...]"));
  54     printf("%s %s %s\n", argv0, "unload-module", _("#N"));
  55     printf("%s %s %s\n", argv0, "describe-module", _("NAME"));
  56     printf("%s %s %s\n", argv0, "set-(sink|source)-volume", _("NAME|#N VOLUME"));
  57     printf("%s %s %s\n", argv0, "set-(sink-input|source-output)-volume", _("#N VOLUME"));
  58     printf("%s %s %s\n", argv0, "set-(sink|source)-mute", _("NAME|#N 1|0"));
  59     printf("%s %s %s\n", argv0, "set-(sink-input|source-output)-mute", _("#N 1|0"));
  60     printf("%s %s %s\n", argv0, "update-(sink|source)-proplist", _("NAME|#N KEY=VALUE"));
  61     printf("%s %s %s\n", argv0, "update-(sink-input|source-output)-proplist", _("#N KEY=VALUE"));
  62     printf("%s %s %s\n", argv0, "set-default(sink|source)", _("NAME|#N"));
  63     printf("%s %s %s\n", argv0, "kill-(client|sink-input|source-output)", _("#N"));
  64     printf("%s %s %s\n", argv0, "play-sample", _("NAME SINK|#N"));
  65     printf("%s %s %s\n", argv0, "remove-sample", _("NAME"));
  66     printf("%s %s %s\n", argv0, "load-sample", _("NAME FILENAME"));
  67     printf("%s %s %s\n", argv0, "load-sample-lazy", _("NAME FILENAME"));
  68     printf("%s %s %s\n", argv0, "load-sample-dir-lazy", _("PATHNAME"));
  69     printf("%s %s %s\n", argv0, "play-file", _("FILENAME SINK|#N"));
  70     printf("%s %s\n",    argv0, "dump");
  71     printf("%s %s %s\n", argv0, "move-(sink-input|source-output)", _("#N SINK|SOURCE"));
  72     printf("%s %s %s\n", argv0, "suspend-(sink|source)", _("NAME|#N 1|0"));
  73     printf("%s %s %s\n", argv0, "suspend", _("1|0"));
  74     printf("%s %s %s\n", argv0, "set-card-profile", _("CARD PROFILE"));
  75     printf("%s %s %s\n", argv0, "set-(sink|source)-port", _("NAME|#N PORT"));
  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 pacdm starts in the interactive mode\n" ));
  85 }
  86
  87 enum {
  88     ARG_VERSION = 256
  89 };
  90
  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     pa_bool_t ibuf_eof, obuf_eof, ibuf_closed, obuf_closed;
 101     struct pollfd pollfd[3];
 102     struct pollfd *watch_socket, *watch_stdin, *watch_stdout;
 103
 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
 170         if (r >= 0)
 171             break;
 172
 173         if (pa_pid_file_kill(SIGUSR2, NULL, "pulseaudio") < 0) {
 174             pa_log(_("Failed to kill PulseAudio daemon."));
 175             goto quit;
 176         }
 177
 178         pa_msleep(300);
 179     }
 180
 181     if (i >= 5) {
 182         pa_log(_("Daemon not responding."));
 183         goto quit;
 184     }
 185
 186     buf_size = pa_pipe_buf(fd);
 187     ibuf_size = PA_MIN(buf_size, pa_pipe_buf(STDIN_FILENO));
 188     ibuf = pa_xmalloc(ibuf_size);
 189     obuf_size = PA_MIN(buf_size, pa_pipe_buf(STDOUT_FILENO));
 190     obuf = pa_xmalloc(obuf_size);
 191     ibuf_index = ibuf_length = obuf_index = obuf_length = 0;
 192     ibuf_eof = obuf_eof = ibuf_closed = obuf_closed = FALSE;
 193
 194     if (argc > 1) {
 195         for (i = 1; i < argc; i++) {
 196             size_t k;
 197
 198             k = PA_MIN(ibuf_size - ibuf_length, strlen(argv[i]));
 199             memcpy(ibuf + ibuf_length, argv[i], k);
 200             ibuf_length += k;
 201
 202             if (ibuf_length < ibuf_size) {
 203                 ibuf[ibuf_length] = i < argc-1 ? ' ' : '\n';
 204                 ibuf_length++;
 205             }
 206         }
 207
 208         ibuf_eof = TRUE;
 209     }
 210
 211     for (;;) {
 212         struct pollfd *p;
 213
 214         if (ibuf_eof &&
 215             obuf_eof &&
 216             ibuf_length <= 0 &&
 217             obuf_length <= 0)
 218             break;
 219
 220         if (ibuf_length <= 0 && ibuf_eof && !ibuf_closed) {
 221             shutdown(fd, SHUT_WR);
 222             ibuf_closed = TRUE;
 223         }
 224
 225         if (obuf_length <= 0 && obuf_eof && !obuf_closed) {
 226             shutdown(fd, SHUT_RD);
 227             obuf_closed = TRUE;
 228         }
 229
 230         pa_zero(pollfd);
 231
 232         p = pollfd;
 233
 234         if (ibuf_length > 0 || (!obuf_eof && obuf_length <= 0)) {
 235             watch_socket = p++;
 236             watch_socket->fd = fd;
 237             watch_socket->events =
 238                 (ibuf_length > 0 ? POLLOUT : 0) |
 239                 (!obuf_eof && obuf_length <= 0 ? POLLIN : 0);
 240         } else
 241             watch_socket = NULL;
 242
 243         if (!ibuf_eof && ibuf_length <= 0) {
 244             watch_stdin = p++;
 245             watch_stdin->fd = STDIN_FILENO;
 246             watch_stdin->events = POLLIN;
 247         } else
 248             watch_stdin = NULL;
 249
 250         if (obuf_length > 0) {
 251             watch_stdout = p++;
 252             watch_stdout->fd = STDOUT_FILENO;
 253             watch_stdout->events = POLLOUT;
 254         } else
 255             watch_stdout = NULL;
 256
 257         if (pa_poll(pollfd, p-pollfd, -1) < 0) {
 258
 259             if (errno == EINTR)
 260                 continue;
 261
 262             pa_log(_("poll(): %s"), strerror(errno));
 263             goto quit;
 264         }
 265
 266         if (watch_stdin) {
 267             if (watch_stdin->revents & POLLIN) {
 268                 ssize_t r;
 269                 pa_assert(ibuf_length <= 0);
 270
 271                 if ((r = pa_read(STDIN_FILENO, ibuf, ibuf_size, &stdin_type)) <= 0) {
 272                     if (r < 0) {
 273                         pa_log(_("read(): %s"), strerror(errno));
 274                         goto quit;
 275                     }
 276
 277                     ibuf_eof = TRUE;
 278                 } else {
 279                     ibuf_length = (size_t) r;
 280                     ibuf_index = 0;
 281                 }
 282             } else if (watch_stdin->revents & POLLHUP)
 283                 ibuf_eof = TRUE;
 284         }
 285
 286         if (watch_socket) {
 287             if (watch_socket->revents & POLLIN) {
 288                 ssize_t r;
 289                 pa_assert(obuf_length <= 0);
 290
 291                 if ((r = pa_read(fd, obuf, obuf_size, &fd_type)) <= 0) {
 292                     if (r < 0) {
 293                         pa_log(_("read(): %s"), strerror(errno));
 294                         goto quit;
 295                     }
 296
 297                     obuf_eof = TRUE;
 298                 } else {
 299                     obuf_length = (size_t) r;
 300                     obuf_index = 0;
 301                 }
 302             } else if (watch_socket->revents & POLLHUP)
 303                 obuf_eof = TRUE;
 304         }
 305
 306         if (watch_stdout) {
 307             if (watch_stdout->revents & POLLHUP) {
 308                 obuf_eof = TRUE;
 309                 obuf_length = 0;
 310             } else if (watch_stdout->revents & POLLOUT) {
 311                 ssize_t r;
 312                 pa_assert(obuf_length > 0);
 313
 314                 if ((r = pa_write(STDOUT_FILENO, obuf + obuf_index, obuf_length, &stdout_type)) < 0) {
 315                     pa_log(_("write(): %s"), strerror(errno));
 316                     goto quit;
 317                 }
 318
 319                 obuf_length -= (size_t) r;
 320                 obuf_index += obuf_index;
 321             }
 322         }
 323
 324         if (watch_socket) {
 325             if (watch_socket->revents & POLLHUP) {
 326                 ibuf_eof = TRUE;
 327                 ibuf_length = 0;
 328             } if (watch_socket->revents & POLLOUT) {
 329                 ssize_t r;
 330                 pa_assert(ibuf_length > 0);
 331
 332                 if ((r = pa_write(fd, ibuf + ibuf_index, ibuf_length, &fd_type)) < 0) {
 333                     pa_log(_("write(): %s"), strerror(errno));
 334                     goto quit;
 335                 }
 336
 337                 ibuf_length -= (size_t) r;
 338                 ibuf_index += obuf_index;
 339             }
 340         }
 341     }
 342
 343     ret = 0;
 344
 345 quit:
 346     if (fd >= 0)
 347         pa_close(fd);
 348
 349     pa_xfree(obuf);
 350     pa_xfree(ibuf);
 351
 352     return ret;
 353 }