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", _("NAME|#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-port-latency-offset", _("CARD-NAME|CARD-#N PORT OFFSET"));
  77     printf("%s %s %s\n", argv0, "set-log-target", _("TARGET"));
  78     printf("%s %s %s\n", argv0, "set-log-level", _("NUMERIC LEVEL"));
  79     printf("%s %s %s\n", argv0, "set-log-meta", _("1|0"));
  80     printf("%s %s %s\n", argv0, "set-log-time", _("1|0"));
  81     printf("%s %s %s\n", argv0, "set-log-backtrace", _("FRAMES"));
  82
  83     printf(_("\n"
  84          "  -h, --help                            Show this help\n"
  85          "      --version                         Show version\n"
  86          "When no command is given pacmd starts in the interactive mode\n" ));
  87 }
  88
  89 enum {
  90     ARG_VERSION = 256
  91 };
  92
  93 int main(int argc, char*argv[]) {
  94     pid_t pid;
  95     int fd = -1;
  96     int ret = 1, i;
  97     struct sockaddr_un sa;
  98     char *ibuf = NULL;
  99     char *obuf = NULL;
 100     size_t buf_size, ibuf_size, ibuf_index, ibuf_length, obuf_size, obuf_index, obuf_length;
 101     char *cli;
 102     bool ibuf_eof, obuf_eof, ibuf_closed, obuf_closed;
 103     struct pollfd pollfd[3];
 104     struct pollfd *watch_socket, *watch_stdin, *watch_stdout;
 105
 106     int stdin_type = 0, stdout_type = 0, fd_type = 0;
 107
 108     char *bn = NULL;
 109     int c;
 110
 111     static const struct option long_options[] = {
 112         {"version",     0, NULL, ARG_VERSION},
 113         {"help",        0, NULL, 'h'},
 114         {NULL,          0, NULL, 0}
 115     };
 116
 117     setlocale(LC_ALL, "");
 118 #ifdef ENABLE_NLS
 119     bindtextdomain(GETTEXT_PACKAGE, PULSE_LOCALEDIR);
 120 #endif
 121
 122     bn = pa_path_get_filename(argv[0]);
 123
 124     while ((c = getopt_long(argc, argv, "h", long_options, NULL)) != -1) {
 125         switch (c) {
 126             case 'h' :
 127                 help(bn);
 128                 ret = 0;
 129                 goto quit;
 130             case ARG_VERSION:
 131                 printf(_("pacmd %s\n"
 132                          "Compiled with libpulse %s\n"
 133                          "Linked with libpulse %s\n"),
 134                        PACKAGE_VERSION,
 135                        pa_get_headers_version(),
 136                        pa_get_library_version());
 137                 ret = 0;
 138                 goto quit;
 139             default:
 140                 goto quit;
 141         }
 142     }
 143
 144     if (pa_pid_file_check_running(&pid, "pulseaudio") < 0) {
 145         pa_log(_("No PulseAudio daemon running, or not running as session daemon."));
 146         goto quit;
 147     }
 148
 149     if ((fd = pa_socket_cloexec(PF_UNIX, SOCK_STREAM, 0)) < 0) {
 150         pa_log(_("socket(PF_UNIX, SOCK_STREAM, 0): %s"), strerror(errno));
 151         goto quit;
 152     }
 153
 154     pa_zero(sa);
 155     sa.sun_family = AF_UNIX;
 156
 157     if (!(cli = pa_runtime_path("cli")))
 158         goto quit;
 159
 160     pa_strlcpy(sa.sun_path, cli, sizeof(sa.sun_path));
 161     pa_xfree(cli);
 162
 163     for (i = 0; i < 5; i++) {
 164         int r;
 165
 166         if ((r = connect(fd, (struct sockaddr*) &sa, sizeof(sa))) < 0 && (errno != ECONNREFUSED && errno != ENOENT)) {
 167             pa_log(_("connect(): %s"), strerror(errno));
 168             goto quit;
 169         }
 170
 171         if (r >= 0)
 172             break;
 173
 174         if (pa_pid_file_kill(SIGUSR2, NULL, "pulseaudio") < 0) {
 175             pa_log(_("Failed to kill PulseAudio daemon."));
 176             goto quit;
 177         }
 178
 179         pa_msleep(300);
 180     }
 181
 182     if (i >= 5) {
 183         pa_log(_("Daemon not responding."));
 184         goto quit;
 185     }
 186
 187     buf_size = pa_pipe_buf(fd);
 188     ibuf_size = PA_MIN(buf_size, pa_pipe_buf(STDIN_FILENO));
 189     ibuf = pa_xmalloc(ibuf_size);
 190     obuf_size = PA_MIN(buf_size, pa_pipe_buf(STDOUT_FILENO));
 191     obuf = pa_xmalloc(obuf_size);
 192     ibuf_index = ibuf_length = obuf_index = obuf_length = 0;
 193     ibuf_eof = obuf_eof = ibuf_closed = obuf_closed = false;
 194
 195     if (argc > 1) {
 196         for (i = 1; i < argc; i++) {
 197             size_t k;
 198
 199             k = PA_MIN(ibuf_size - ibuf_length, strlen(argv[i]));
 200             memcpy(ibuf + ibuf_length, argv[i], k);
 201             ibuf_length += k;
 202
 203             if (ibuf_length < ibuf_size) {
 204                 ibuf[ibuf_length] = i < argc-1 ? ' ' : '\n';
 205                 ibuf_length++;
 206             }
 207         }
 208
 209         ibuf_eof = true;
 210     }
 211
 212     for (;;) {
 213         struct pollfd *p;
 214
 215         if (ibuf_eof &&
 216             obuf_eof &&
 217             ibuf_length <= 0 &&
 218             obuf_length <= 0)
 219             break;
 220
 221         if (ibuf_length <= 0 && ibuf_eof && !ibuf_closed) {
 222             shutdown(fd, SHUT_WR);
 223             ibuf_closed = true;
 224         }
 225
 226         if (obuf_length <= 0 && obuf_eof && !obuf_closed) {
 227             shutdown(fd, SHUT_RD);
 228             obuf_closed = true;
 229         }
 230
 231         pa_zero(pollfd);
 232
 233         p = pollfd;
 234
 235         if (ibuf_length > 0 || (!obuf_eof && obuf_length <= 0)) {
 236             watch_socket = p++;
 237             watch_socket->fd = fd;
 238             watch_socket->events =
 239                 (ibuf_length > 0 ? POLLOUT : 0) |
 240                 (!obuf_eof && obuf_length <= 0 ? POLLIN : 0);
 241         } else
 242             watch_socket = NULL;
 243
 244         if (!ibuf_eof && ibuf_length <= 0) {
 245             watch_stdin = p++;
 246             watch_stdin->fd = STDIN_FILENO;
 247             watch_stdin->events = POLLIN;
 248         } else
 249             watch_stdin = NULL;
 250
 251         if (obuf_length > 0) {
 252             watch_stdout = p++;
 253             watch_stdout->fd = STDOUT_FILENO;
 254             watch_stdout->events = POLLOUT;
 255         } else
 256             watch_stdout = NULL;
 257
 258         if (pa_poll(pollfd, p-pollfd, -1) < 0) {
 259
 260             if (errno == EINTR)
 261                 continue;
 262
 263             pa_log(_("poll(): %s"), strerror(errno));
 264             goto quit;
 265         }
 266
 267         if (watch_stdin) {
 268             if (watch_stdin->revents & POLLIN) {
 269                 ssize_t r;
 270                 pa_assert(ibuf_length <= 0);
 271
 272                 if ((r = pa_read(STDIN_FILENO, ibuf, ibuf_size, &stdin_type)) <= 0) {
 273                     if (r < 0) {
 274                         pa_log(_("read(): %s"), strerror(errno));
 275                         goto quit;
 276                     }
 277
 278                     ibuf_eof = true;
 279                 } else {
 280                     ibuf_length = (size_t) r;
 281                     ibuf_index = 0;
 282                 }
 283             } else if (watch_stdin->revents & POLLHUP)
 284                 ibuf_eof = true;
 285         }
 286
 287         if (watch_socket) {
 288             if (watch_socket->revents & POLLIN) {
 289                 ssize_t r;
 290                 pa_assert(obuf_length <= 0);
 291
 292                 if ((r = pa_read(fd, obuf, obuf_size, &fd_type)) <= 0) {
 293                     if (r < 0) {
 294                         pa_log(_("read(): %s"), strerror(errno));
 295                         goto quit;
 296                     }
 297
 298                     obuf_eof = true;
 299                 } else {
 300                     obuf_length = (size_t) r;
 301                     obuf_index = 0;
 302                 }
 303             } else if (watch_socket->revents & POLLHUP)
 304                 obuf_eof = true;
 305         }
 306
 307         if (watch_stdout) {
 308             if (watch_stdout->revents & POLLHUP) {
 309                 obuf_eof = true;
 310                 obuf_length = 0;
 311             } else if (watch_stdout->revents & POLLOUT) {
 312                 ssize_t r;
 313                 pa_assert(obuf_length > 0);
 314
 315                 if ((r = pa_write(STDOUT_FILENO, obuf + obuf_index, obuf_length, &stdout_type)) < 0) {
 316                     pa_log(_("write(): %s"), strerror(errno));
 317                     goto quit;
 318                 }
 319
 320                 obuf_length -= (size_t) r;
 321                 obuf_index += obuf_index;
 322             }
 323         }
 324
 325         if (watch_socket) {
 326             if (watch_socket->revents & POLLHUP) {
 327                 ibuf_eof = true;
 328                 ibuf_length = 0;
 329             } if (watch_socket->revents & POLLOUT) {
 330                 ssize_t r;
 331                 pa_assert(ibuf_length > 0);
 332
 333                 if ((r = pa_write(fd, ibuf + ibuf_index, ibuf_length, &fd_type)) < 0) {
 334                     pa_log(_("write(): %s"), strerror(errno));
 335                     goto quit;
 336                 }
 337
 338                 ibuf_length -= (size_t) r;
 339                 ibuf_index += obuf_index;
 340             }
 341         }
 342     }
 343
 344     ret = 0;
 345
 346 quit:
 347     if (fd >= 0)
 348         pa_close(fd);
 349
 350     pa_xfree(obuf);
 351     pa_xfree(ibuf);
 352
 353     return ret;
 354 }