src/daemon/cmdline.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 <string.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <getopt.h>
  30 #include <sys/stat.h>
  31
  32 #include <pulse/xmalloc.h>
  33 #include <pulse/i18n.h>
  34 #include <pulse/util.h>
  35
  36 #include <pulsecore/core-util.h>
  37 #include <pulsecore/strbuf.h>
  38 #include <pulsecore/macro.h>
  39
  40 #include "cmdline.h"
  41
  42 /* Argument codes for getopt_long() */
  43 enum {
  44     ARG_HELP = 256,
  45     ARG_VERSION,
  46     ARG_DUMP_CONF,
  47     ARG_DUMP_MODULES,
  48     ARG_DAEMONIZE,
  49     ARG_FAIL,
  50     ARG_LOG_LEVEL,
  51     ARG_HIGH_PRIORITY,
  52     ARG_REALTIME,
  53     ARG_DISALLOW_MODULE_LOADING,
  54     ARG_DISALLOW_EXIT,
  55     ARG_EXIT_IDLE_TIME,
  56     ARG_SCACHE_IDLE_TIME,
  57     ARG_LOG_TARGET,
  58     ARG_LOG_META,
  59     ARG_LOG_TIME,
  60     ARG_LOG_BACKTRACE,
  61     ARG_LOAD,
  62     ARG_FILE,
  63     ARG_DL_SEARCH_PATH,
  64     ARG_RESAMPLE_METHOD,
  65     ARG_KILL,
  66     ARG_USE_PID_FILE,
  67     ARG_CHECK,
  68     ARG_NO_CPU_LIMIT,
  69     ARG_DISABLE_SHM,
  70     ARG_DUMP_RESAMPLE_METHODS,
  71     ARG_SYSTEM,
  72     ARG_CLEANUP_SHM,
  73     ARG_START
  74 };
  75
  76 /* Tabel for getopt_long() */
  77 static const struct option long_options[] = {
  78     {"help",                        0, 0, ARG_HELP},
  79     {"version",                     0, 0, ARG_VERSION},
  80     {"dump-conf",                   0, 0, ARG_DUMP_CONF},
  81     {"dump-modules",                0, 0, ARG_DUMP_MODULES},
  82     {"daemonize",                   2, 0, ARG_DAEMONIZE},
  83     {"fail",                        2, 0, ARG_FAIL},
  84     {"verbose",                     2, 0, ARG_LOG_LEVEL},
  85     {"log-level",                   2, 0, ARG_LOG_LEVEL},
  86     {"high-priority",               2, 0, ARG_HIGH_PRIORITY},
  87     {"realtime",                    2, 0, ARG_REALTIME},
  88     {"disallow-module-loading",     2, 0, ARG_DISALLOW_MODULE_LOADING},
  89     {"disallow-exit",               2, 0, ARG_DISALLOW_EXIT},
  90     {"exit-idle-time",              2, 0, ARG_EXIT_IDLE_TIME},
  91     {"scache-idle-time",            2, 0, ARG_SCACHE_IDLE_TIME},
  92     {"log-target",                  1, 0, ARG_LOG_TARGET},
  93     {"log-meta",                    2, 0, ARG_LOG_META},
  94     {"log-time",                    2, 0, ARG_LOG_TIME},
  95     {"log-backtrace",               1, 0, ARG_LOG_BACKTRACE},
  96     {"load",                        1, 0, ARG_LOAD},
  97     {"file",                        1, 0, ARG_FILE},
  98     {"dl-search-path",              1, 0, ARG_DL_SEARCH_PATH},
  99     {"resample-method",             1, 0, ARG_RESAMPLE_METHOD},
 100     {"kill",                        0, 0, ARG_KILL},
 101     {"start",                       0, 0, ARG_START},
 102     {"use-pid-file",                2, 0, ARG_USE_PID_FILE},
 103     {"check",                       0, 0, ARG_CHECK},
 104     {"system",                      2, 0, ARG_SYSTEM},
 105     {"no-cpu-limit",                2, 0, ARG_NO_CPU_LIMIT},
 106     {"disable-shm",                 2, 0, ARG_DISABLE_SHM},
 107     {"dump-resample-methods",       2, 0, ARG_DUMP_RESAMPLE_METHODS},
 108     {"cleanup-shm",                 2, 0, ARG_CLEANUP_SHM},
 109     {NULL, 0, 0, 0}
 110 };
 111
 112 void pa_cmdline_help(const char *argv0) {
 113     pa_assert(argv0);
 114
 115     printf(_("%s [options]\n\n"
 116            "COMMANDS:\n"
 117            "  -h, --help                            Show this help\n"
 118            "      --version                         Show version\n"
 119            "      --dump-conf                       Dump default configuration\n"
 120            "      --dump-modules                    Dump list of available modules\n"
 121            "      --dump-resample-methods           Dump available resample methods\n"
 122            "      --cleanup-shm                     Cleanup stale shared memory segments\n"
 123            "      --start                           Start the daemon if it is not running\n"
 124            "  -k  --kill                            Kill a running daemon\n"
 125            "      --check                           Check for a running daemon (only returns exit code)\n\n"
 126
 127            "OPTIONS:\n"
 128            "      --system[=BOOL]                   Run as system-wide instance\n"
 129            "  -D, --daemonize[=BOOL]                Daemonize after startup\n"
 130            "      --fail[=BOOL]                     Quit when startup fails\n"
 131            "      --high-priority[=BOOL]            Try to set high nice level\n"
 132            "                                        (only available as root, when SUID or\n"
 133            "                                        with elevated RLIMIT_NICE)\n"
 134            "      --realtime[=BOOL]                 Try to enable realtime scheduling\n"
 135            "                                        (only available as root, when SUID or\n"
 136            "                                        with elevated RLIMIT_RTPRIO)\n"
 137            "      --disallow-module-loading[=BOOL]  Disallow module user requested module\n"
 138            "                                        loading/unloading after startup\n"
 139            "      --disallow-exit[=BOOL]            Disallow user requested exit\n"
 140            "      --exit-idle-time=SECS             Terminate the daemon when idle and this\n"
 141            "                                        time passed\n"
 142            "      --module-idle-time=SECS           Unload autoloaded modules when idle and\n"
 143            "                                        this time passed\n"
 144            "      --scache-idle-time=SECS           Unload autoloaded samples when idle and\n"
 145            "                                        this time passed\n"
 146            "      --log-level[=LEVEL]               Increase or set verbosity level\n"
 147            "  -v                                    Increase the verbosity level\n"
 148            "      --log-target={auto,syslog,stderr} Specify the log target\n"
 149            "      --log-meta[=BOOL]                 Include code location in log messages\n"
 150            "      --log-time[=BOOL]                 Include timestamps in log messages\n"
 151            "      --log-backtrace=FRAMES            Include a backtrace in log messages\n"
 152            "  -p, --dl-search-path=PATH             Set the search path for dynamic shared\n"
 153            "                                        objects (plugins)\n"
 154            "      --resample-method=METHOD          Use the specified resampling method\n"
 155            "                                        (See --dump-resample-methods for\n"
 156            "                                        possible values)\n"
 157            "      --use-pid-file[=BOOL]             Create a PID file\n"
 158            "      --no-cpu-limit[=BOOL]             Do not install CPU load limiter on\n"
 159            "                                        platforms that support it.\n"
 160            "      --disable-shm[=BOOL]              Disable shared memory support.\n\n"
 161
 162            "STARTUP SCRIPT:\n"
 163            "  -L, --load=\"MODULE ARGUMENTS\"         Load the specified plugin module with\n"
 164            "                                        the specified argument\n"
 165            "  -F, --file=FILENAME                   Run the specified script\n"
 166            "  -C                                    Open a command line on the running TTY\n"
 167            "                                        after startup\n\n"
 168
 169            "  -n                                    Don't load default script file\n"),
 170            pa_path_get_filename(argv0));
 171 }
 172
 173 int pa_cmdline_parse(pa_daemon_conf *conf, int argc, char *const argv [], int *d) {
 174     pa_strbuf *buf = NULL;
 175     int c;
 176
 177     pa_assert(conf);
 178     pa_assert(argc > 0);
 179     pa_assert(argv);
 180
 181     buf = pa_strbuf_new();
 182
 183     if (conf->script_commands)
 184         pa_strbuf_puts(buf, conf->script_commands);
 185
 186     while ((c = getopt_long(argc, argv, "L:F:ChDnp:kv", long_options, NULL)) != -1) {
 187         switch (c) {
 188             case ARG_HELP:
 189             case 'h':
 190                 conf->cmd = PA_CMD_HELP;
 191                 break;
 192
 193             case ARG_VERSION:
 194                 conf->cmd = PA_CMD_VERSION;
 195                 break;
 196
 197             case ARG_DUMP_CONF:
 198                 conf->cmd = PA_CMD_DUMP_CONF;
 199                 break;
 200
 201             case ARG_DUMP_MODULES:
 202                 conf->cmd = PA_CMD_DUMP_MODULES;
 203                 break;
 204
 205             case ARG_DUMP_RESAMPLE_METHODS:
 206                 conf->cmd = PA_CMD_DUMP_RESAMPLE_METHODS;
 207                 break;
 208
 209             case ARG_CLEANUP_SHM:
 210                 conf->cmd = PA_CMD_CLEANUP_SHM;
 211                 break;
 212
 213             case 'k':
 214             case ARG_KILL:
 215                 conf->cmd = PA_CMD_KILL;
 216                 break;
 217
 218             case ARG_START:
 219                 conf->cmd = PA_CMD_START;
 220                 conf->daemonize = TRUE;
 221                 break;
 222
 223             case ARG_CHECK:
 224                 conf->cmd = PA_CMD_CHECK;
 225                 break;
 226
 227             case ARG_LOAD:
 228             case 'L':
 229                 pa_strbuf_printf(buf, "load-module %s\n", optarg);
 230                 break;
 231
 232             case ARG_FILE:
 233             case 'F': {
 234                 char *p;
 235                 pa_strbuf_printf(buf, ".include %s\n", p = pa_make_path_absolute(optarg));
 236                 pa_xfree(p);
 237                 break;
 238             }
 239
 240             case 'C':
 241                 pa_strbuf_puts(buf, "load-module module-cli exit_on_eof=1\n");
 242                 break;
 243
 244             case ARG_DAEMONIZE:
 245             case 'D':
 246                 if ((conf->daemonize = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 247                     pa_log(_("--daemonize expects boolean argument"));
 248                     goto fail;
 249                 }
 250                 break;
 251
 252             case ARG_FAIL:
 253                 if ((conf->fail = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 254                     pa_log(_("--fail expects boolean argument"));
 255                     goto fail;
 256                 }
 257                 break;
 258
 259             case 'v':
 260             case ARG_LOG_LEVEL:
 261
 262                 if (optarg) {
 263                     if (pa_daemon_conf_set_log_level(conf, optarg) < 0) {
 264                         pa_log(_("--log-level expects log level argument (either numeric in range 0..4 or one of debug, info, notice, warn, error)."));
 265                         goto fail;
 266                     }
 267                 } else {
 268                     if (conf->log_level < PA_LOG_LEVEL_MAX-1)
 269                         conf->log_level++;
 270                 }
 271
 272                 break;
 273
 274             case ARG_HIGH_PRIORITY:
 275                 if ((conf->high_priority = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 276                     pa_log(_("--high-priority expects boolean argument"));
 277                     goto fail;
 278                 }
 279                 break;
 280
 281             case ARG_REALTIME:
 282                 if ((conf->realtime_scheduling = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 283                     pa_log(_("--realtime expects boolean argument"));
 284                     goto fail;
 285                 }
 286                 break;
 287
 288             case ARG_DISALLOW_MODULE_LOADING:
 289                 if ((conf->disallow_module_loading = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 290                     pa_log(_("--disallow-module-loading expects boolean argument"));
 291                     goto fail;
 292                 }
 293                 break;
 294
 295             case ARG_DISALLOW_EXIT:
 296                 if ((conf->disallow_exit = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 297                     pa_log(_("--disallow-exit expects boolean argument"));
 298                     goto fail;
 299                 }
 300                 break;
 301
 302             case ARG_USE_PID_FILE:
 303                 if ((conf->use_pid_file = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 304                     pa_log(_("--use-pid-file expects boolean argument"));
 305                     goto fail;
 306                 }
 307                 break;
 308
 309             case 'p':
 310             case ARG_DL_SEARCH_PATH:
 311                 pa_xfree(conf->dl_search_path);
 312                 conf->dl_search_path = *optarg ? pa_xstrdup(optarg) : NULL;
 313                 break;
 314
 315             case 'n':
 316                 conf->load_default_script_file = FALSE;
 317                 break;
 318
 319             case ARG_LOG_TARGET:
 320                 if (pa_daemon_conf_set_log_target(conf, optarg) < 0) {
 321                     pa_log(_("Invalid log target: use either 'syslog', 'stderr' or 'auto'."));
 322                     goto fail;
 323                 }
 324                 break;
 325
 326             case ARG_LOG_TIME:
 327                 if ((conf->log_time = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 328                     pa_log(_("--log-time expects boolean argument"));
 329                     goto fail;
 330                 }
 331                 break;
 332
 333             case ARG_LOG_META:
 334                 if ((conf->log_meta = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 335                     pa_log(_("--log-meta expects boolean argument"));
 336                     goto fail;
 337                 }
 338                 break;
 339
 340             case ARG_LOG_BACKTRACE:
 341                 conf->log_backtrace = (unsigned) atoi(optarg);
 342                 break;
 343
 344             case ARG_EXIT_IDLE_TIME:
 345                 conf->exit_idle_time = atoi(optarg);
 346                 break;
 347
 348             case ARG_SCACHE_IDLE_TIME:
 349                 conf->scache_idle_time = atoi(optarg);
 350                 break;
 351
 352             case ARG_RESAMPLE_METHOD:
 353                 if (pa_daemon_conf_set_resample_method(conf, optarg) < 0) {
 354                     pa_log(_("Invalid resample method '%s'."), optarg);
 355                     goto fail;
 356                 }
 357                 break;
 358
 359             case ARG_SYSTEM:
 360                 if ((conf->system_instance = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 361                     pa_log(_("--system expects boolean argument"));
 362                     goto fail;
 363                 }
 364                 break;
 365
 366             case ARG_NO_CPU_LIMIT:
 367                 if ((conf->no_cpu_limit = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 368                     pa_log(_("--no-cpu-limit expects boolean argument"));
 369                     goto fail;
 370                 }
 371                 break;
 372
 373             case ARG_DISABLE_SHM:
 374                 if ((conf->disable_shm = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 375                     pa_log(_("--disable-shm expects boolean argument"));
 376                     goto fail;
 377                 }
 378                 break;
 379
 380             default:
 381                 goto fail;
 382         }
 383     }
 384
 385     pa_xfree(conf->script_commands);
 386     conf->script_commands = pa_strbuf_tostring_free(buf);
 387
 388     *d = optind;
 389
 390     return 0;
 391
 392 fail:
 393     if (buf)
 394         pa_strbuf_free(buf);
 395
 396     return -1;
 397 }