src/daemon/cmdline.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio 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 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio 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 polypaudio; 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 <assert.h>
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <getopt.h>
  31 #include <sys/stat.h>
  32
  33 #include <polypcore/util.h>
  34 #include <polypcore/strbuf.h>
  35 #include <polypcore/xmalloc.h>
  36
  37 #include "cmdline.h"
  38
  39 /* Argument codes for getopt_long() */
  40 enum {
  41     ARG_HELP = 256,
  42     ARG_VERSION,
  43     ARG_DUMP_CONF,
  44     ARG_DUMP_MODULES,
  45     ARG_DAEMONIZE,
  46     ARG_FAIL,
  47     ARG_LOG_LEVEL,
  48     ARG_HIGH_PRIORITY,
  49     ARG_DISALLOW_MODULE_LOADING,
  50     ARG_EXIT_IDLE_TIME,
  51     ARG_MODULE_IDLE_TIME,
  52     ARG_SCACHE_IDLE_TIME,
  53     ARG_LOG_TARGET,
  54     ARG_LOAD,
  55     ARG_FILE,
  56     ARG_DL_SEARCH_PATH,
  57     ARG_RESAMPLE_METHOD,
  58     ARG_KILL,
  59     ARG_USE_PID_FILE,
  60     ARG_CHECK
  61 };
  62
  63 /* Tabel for getopt_long() */
  64 static struct option long_options[] = {
  65     {"help",                        0, 0, ARG_HELP},
  66     {"version",                     0, 0, ARG_VERSION},
  67     {"dump-conf",                   0, 0, ARG_DUMP_CONF},
  68     {"dump-modules",                0, 0, ARG_DUMP_MODULES},
  69     {"daemonize",                   2, 0, ARG_DAEMONIZE},
  70     {"fail",                        2, 0, ARG_FAIL},
  71     {"verbose",                     2, 0, ARG_LOG_LEVEL},
  72     {"log-level",                   2, 0, ARG_LOG_LEVEL},
  73     {"high-priority",               2, 0, ARG_HIGH_PRIORITY},
  74     {"disallow-module-loading",     2, 0, ARG_DISALLOW_MODULE_LOADING},
  75     {"exit-idle-time",              2, 0, ARG_EXIT_IDLE_TIME},
  76     {"module-idle-time",            2, 0, ARG_MODULE_IDLE_TIME},
  77     {"scache-idle-time",            2, 0, ARG_SCACHE_IDLE_TIME},
  78     {"log-target",                  1, 0, ARG_LOG_TARGET},
  79     {"load",                        1, 0, ARG_LOAD},
  80     {"file",                        1, 0, ARG_FILE},
  81     {"dl-search-path",              1, 0, ARG_DL_SEARCH_PATH},
  82     {"resample-method",             1, 0, ARG_RESAMPLE_METHOD},
  83     {"kill",                        0, 0, ARG_KILL},
  84     {"use-pid-file",                2, 0, ARG_USE_PID_FILE},
  85     {"check",                       0, 0, ARG_CHECK},
  86     {NULL, 0, 0, 0}
  87 };
  88
  89 void pa_cmdline_help(const char *argv0) {
  90     const char *e;
  91
  92     if ((e = strrchr(argv0, '/')))
  93         e++;
  94     else
  95         e = argv0;
  96
  97     printf("%s [options]\n\n"
  98            "COMMANDS:\n"
  99            "  -h, --help                            Show this help\n"
 100            "      --version                         Show version\n"
 101            "      --dump-conf                       Dump default configuration\n"
 102            "      --dump-modules                    Dump list of available modules\n"
 103            "  -k  --kill                            Kill a running daemon\n"
 104            "      --check                           Check for a running daemon\n\n"
 105
 106            "OPTIONS:\n"
 107            "  -D, --daemonize[=BOOL]                Daemonize after startup\n"
 108            "      --fail[=BOOL]                     Quit when startup fails\n"
 109            "      --high-priority[=BOOL]            Try to set high process priority\n"
 110            "                                        (only available as root)\n"
 111            "      --disallow-module-loading[=BOOL]  Disallow module loading after startup\n"
 112            "      --exit-idle-time=SECS             Terminate the daemon when idle and this\n"
 113            "                                        time passed\n"
 114            "      --module-idle-time=SECS           Unload autoloaded modules when idle and\n"
 115            "                                        this time passed\n"
 116            "      --scache-idle-time=SECS           Unload autoloaded samples when idle and\n"
 117            "                                        this time passed\n"
 118            "      --log-level[=LEVEL]               Increase or set verbosity level\n"
 119            "  -v                                    Increase the verbosity level\n"
 120            "      --log-target={auto,syslog,stderr} Specify the log target\n"
 121            "  -p, --dl-search-path=PATH             Set the search path for dynamic shared\n"
 122            "                                        objects (plugins)\n"
 123            "      --resample-method=[METHOD]        Use the specified resampling method\n"
 124            "                                        (one of src-sinc-medium-quality,\n"
 125            "                                        src-sinc-best-quality,src-sinc-fastest\n"
 126            "                                        src-zero-order-hold,src-linear,trivial)\n"
 127            "      --use-pid-file[=BOOL]             Create a PID file\n\n"
 128
 129            "STARTUP SCRIPT:\n"
 130            "  -L, --load=\"MODULE ARGUMENTS\"         Load the specified plugin module with\n"
 131            "                                        the specified argument\n"
 132            "  -F, --file=FILENAME                   Run the specified script\n"
 133            "  -C                                    Open a command line on the running TTY\n"
 134            "                                        after startup\n\n"
 135
 136            "  -n                                    Don't load default script file\n", e);
 137 }
 138
 139 int pa_cmdline_parse(pa_daemon_conf *conf, int argc, char *const argv [], int *d) {
 140     pa_strbuf *buf = NULL;
 141     int c;
 142     assert(conf && argc && argv);
 143
 144     buf = pa_strbuf_new();
 145
 146     if (conf->script_commands)
 147         pa_strbuf_puts(buf, conf->script_commands);
 148
 149     while ((c = getopt_long(argc, argv, "L:F:ChDnp:kv", long_options, NULL)) != -1) {
 150         switch (c) {
 151             case ARG_HELP:
 152             case 'h':
 153                 conf->cmd = PA_CMD_HELP;
 154                 break;
 155
 156             case ARG_VERSION:
 157                 conf->cmd = PA_CMD_VERSION;
 158                 break;
 159
 160             case ARG_DUMP_CONF:
 161                 conf->cmd = PA_CMD_DUMP_CONF;
 162                 break;
 163
 164             case ARG_DUMP_MODULES:
 165                 conf->cmd = PA_CMD_DUMP_MODULES;
 166                 break;
 167
 168             case 'k':
 169             case ARG_KILL:
 170                 conf->cmd = PA_CMD_KILL;
 171                 break;
 172
 173             case ARG_CHECK:
 174                 conf->cmd = PA_CMD_CHECK;
 175                 break;
 176
 177             case ARG_LOAD:
 178             case 'L':
 179                 pa_strbuf_printf(buf, "load-module %s\n", optarg);
 180                 break;
 181
 182             case ARG_FILE:
 183             case 'F':
 184                 pa_strbuf_printf(buf, ".include %s\n", optarg);
 185                 break;
 186
 187             case 'C':
 188                 pa_strbuf_puts(buf, "load-module module-cli\n");
 189                 break;
 190
 191             case ARG_DAEMONIZE:
 192             case 'D':
 193                 if ((conf->daemonize = optarg ? pa_parse_boolean(optarg) : 1) < 0) {
 194                     pa_log(__FILE__": --daemonize expects boolean argument");
 195                     goto fail;
 196                 }
 197                 break;
 198
 199             case ARG_FAIL:
 200                 if ((conf->fail = optarg ? pa_parse_boolean(optarg) : 1) < 0) {
 201                     pa_log(__FILE__": --fail expects boolean argument");
 202                     goto fail;
 203                 }
 204                 break;
 205
 206             case 'v':
 207             case ARG_LOG_LEVEL:
 208
 209                 if (optarg) {
 210                     if (pa_daemon_conf_set_log_level(conf, optarg) < 0) {
 211                         pa_log(__FILE__": --log-level expects log level argument (either numeric in range 0..4 or one of debug, info, notice, warn, error).");
 212                         goto fail;
 213                     }
 214                 } else {
 215                     if (conf->log_level < PA_LOG_LEVEL_MAX-1)
 216                         conf->log_level++;
 217                 }
 218
 219                 break;
 220
 221             case ARG_HIGH_PRIORITY:
 222                 if ((conf->high_priority = optarg ? pa_parse_boolean(optarg) : 1) < 0) {
 223                     pa_log(__FILE__": --high-priority expects boolean argument");
 224                     goto fail;
 225                 }
 226                 break;
 227
 228             case ARG_DISALLOW_MODULE_LOADING:
 229                 if ((conf->disallow_module_loading = optarg ? pa_parse_boolean(optarg) : 1) < 0) {
 230                     pa_log(__FILE__": --disallow-module-loading expects boolean argument");
 231                     goto fail;
 232                 }
 233                 break;
 234
 235             case ARG_USE_PID_FILE:
 236                 if ((conf->use_pid_file = optarg ? pa_parse_boolean(optarg) : 1) < 0) {
 237                     pa_log(__FILE__": --use-pid-file expects boolean argument");
 238                     goto fail;
 239                 }
 240                 break;
 241
 242             case 'p':
 243             case ARG_DL_SEARCH_PATH:
 244                 pa_xfree(conf->dl_search_path);
 245                 conf->dl_search_path = *optarg ? pa_xstrdup(optarg) : NULL;
 246                 break;
 247
 248             case 'n':
 249                 pa_xfree(conf->default_script_file);
 250                 conf->default_script_file = NULL;
 251                 break;
 252
 253             case ARG_LOG_TARGET:
 254                 if (pa_daemon_conf_set_log_target(conf, optarg) < 0) {
 255                     pa_log(__FILE__": Invalid log target: use either 'syslog', 'stderr' or 'auto'.");
 256                     goto fail;
 257                 }
 258                 break;
 259
 260             case ARG_EXIT_IDLE_TIME:
 261                 conf->exit_idle_time = atoi(optarg);
 262                 break;
 263
 264             case ARG_MODULE_IDLE_TIME:
 265                 conf->module_idle_time = atoi(optarg);
 266                 break;
 267
 268             case ARG_SCACHE_IDLE_TIME:
 269                 conf->scache_idle_time = atoi(optarg);
 270                 break;
 271
 272             case ARG_RESAMPLE_METHOD:
 273                 if (pa_daemon_conf_set_resample_method(conf, optarg) < 0) {
 274                     pa_log(__FILE__": Invalid resample method '%s'.", optarg);
 275                     goto fail;
 276                 }
 277                 break;
 278
 279             default:
 280                 goto fail;
 281         }
 282     }
 283
 284     pa_xfree(conf->script_commands);
 285     conf->script_commands = pa_strbuf_tostring_free(buf);
 286
 287     if (!conf->script_commands) {
 288         pa_xfree(conf->script_commands);
 289         conf->script_commands = NULL;
 290     }
 291
 292     *d = optind;
 293
 294     return 0;
 295
 296 fail:
 297     if (buf)
 298         pa_strbuf_free(buf);
 299
 300     return -1;
 301 }