mdw@git.distorted.org.uk Git - disorder/blob - clients/disorder.c

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2004, 2005, 2006 Richard Kettlewell
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20
  21 #include <config.h>
  22 #include "types.h"
  23
  24 #include <getopt.h>
  25 #include <sys/types.h>
  26 #include <sys/socket.h>
  27 #include <sys/un.h>
  28 #include <stdio.h>
  29 #include <errno.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <locale.h>
  33 #include <time.h>
  34 #include <stddef.h>
  35 #include <unistd.h>
  36 #include <assert.h>
  37 #include <pcre.h>
  38
  39 #include "configuration.h"
  40 #include "syscalls.h"
  41 #include "log.h"
  42 #include "queue.h"
  43 #include "client.h"
  44 #include "wstat.h"
  45 #include "table.h"
  46 #include "charset.h"
  47 #include "kvp.h"
  48 #include "split.h"
  49 #include "sink.h"
  50 #include "plugin.h"
  51 #include "mem.h"
  52 #include "defs.h"
  53 #include "authorize.h"
  54 #include "vector.h"
  55
  56 static int auto_reconfigure;
  57
  58 static const struct option options[] = {
  59   { "help", no_argument, 0, 'h' },
  60   { "version", no_argument, 0, 'V' },
  61   { "config", required_argument, 0, 'c' },
  62   { "debug", no_argument, 0, 'd' },
  63   { "help-commands", no_argument, 0, 'H' },
  64   { 0, 0, 0, 0 }
  65 };
  66
  67 /* display usage message and terminate */
  68 static void help(void) {
  69   xprintf("Usage:\n"
  70           "  disorder [OPTIONS] COMMAND ...\n"
  71           "Options:\n"
  72           "  --help, -h              Display usage message\n"
  73           "  --help-commands, -H     List commands\n"
  74           "  --version, -V           Display version number\n"
  75           "  --config PATH, -c PATH  Set configuration file\n"
  76           "  --debug, -d             Turn on debugging\n");
  77   xfclose(stdout);
  78   exit(0);
  79 }
  80
  81 /* display version number and terminate */
  82 static void version(void) {
  83   xprintf("disorder version %s\n", disorder_version_string);
  84   xfclose(stdout);
  85   exit(0);
  86 }
  87
  88 static void cf_version(disorder_client *c,
  89                        char attribute((unused)) **argv) {
  90   char *v;
  91
  92   if(disorder_version(c, &v)) exit(EXIT_FAILURE);
  93   xprintf("%s\n", nullcheck(utf82mb(v)));
  94 }
  95
  96 static void print_queue_entry(const struct queue_entry *q) {
  97   if(q->track) xprintf("track %s\n", nullcheck(utf82mb(q->track)));
  98   if(q->id) xprintf("  id %s\n", nullcheck(utf82mb(q->id)));
  99   if(q->submitter) xprintf("  submitted by %s at %s",
 100                            nullcheck(utf82mb(q->submitter)), ctime(&q->when));
 101   if(q->played) xprintf("  played at %s", ctime(&q->played));
 102   if(q->state == playing_started
 103      || q->state == playing_paused) xprintf("  %lds so far",  q->sofar);
 104   else if(q->expected) xprintf("  might start at %s", ctime(&q->expected));
 105   if(q->scratched) xprintf("  scratched by %s\n",
 106                            nullcheck(utf82mb(q->scratched)));
 107   else xprintf("  %s\n", playing_states[q->state]);
 108   if(q->wstat) xprintf("  %s\n", wstat(q->wstat));
 109 }
 110
 111 static void cf_playing(disorder_client *c,
 112                        char attribute((unused)) **argv) {
 113   struct queue_entry *q;
 114
 115   if(disorder_playing(c, &q)) exit(EXIT_FAILURE);
 116   if(q)
 117     print_queue_entry(q);
 118   else
 119     xprintf("nothing\n");
 120 }
 121
 122 static void cf_play(disorder_client *c, char **argv) {
 123   while(*argv)
 124     if(disorder_play(c, *argv++)) exit(EXIT_FAILURE);
 125 }
 126
 127 static void cf_remove(disorder_client *c, char **argv) {
 128   if(disorder_remove(c, argv[0])) exit(EXIT_FAILURE);
 129 }
 130
 131 static void cf_disable(disorder_client *c,
 132                        char attribute((unused)) **argv) {
 133   if(disorder_disable(c)) exit(EXIT_FAILURE);
 134 }
 135
 136 static void cf_enable(disorder_client *c, char attribute((unused)) **argv) {
 137   if(disorder_enable(c)) exit(EXIT_FAILURE);
 138 }
 139
 140 static void cf_scratch(disorder_client *c,
 141                        char **argv) {
 142   if(disorder_scratch(c, argv[0])) exit(EXIT_FAILURE);
 143 }
 144
 145 static void cf_shutdown(disorder_client *c,
 146                         char attribute((unused)) **argv) {
 147   if(disorder_shutdown(c)) exit(EXIT_FAILURE);
 148 }
 149
 150 static void cf_reconfigure(disorder_client *c,
 151                            char attribute((unused)) **argv) {
 152   if(disorder_reconfigure(c)) exit(EXIT_FAILURE);
 153 }
 154
 155 static void cf_rescan(disorder_client *c, char attribute((unused)) **argv) {
 156   if(disorder_rescan(c)) exit(EXIT_FAILURE);
 157 }
 158
 159 static void cf_somequeue(disorder_client *c,
 160                          int (*fn)(disorder_client *c,
 161                                    struct queue_entry **qp)) {
 162   struct queue_entry *q;
 163
 164   if(fn(c, &q)) exit(EXIT_FAILURE);
 165   while(q) {
 166     print_queue_entry(q);
 167     q = q->next;
 168   }
 169 }
 170
 171 static void cf_recent(disorder_client *c, char attribute((unused)) **argv) {
 172   cf_somequeue(c, disorder_recent);
 173 }
 174
 175 static void cf_queue(disorder_client *c, char attribute((unused)) **argv) {
 176   cf_somequeue(c, disorder_queue);
 177 }
 178
 179 static void cf_quack(disorder_client attribute((unused)) *c,
 180                      char attribute((unused)) **argv) {
 181   xprintf("\n"
 182           " .------------------.\n"
 183           " | Naath is a babe! |\n"
 184           " `---------+--------'\n"
 185           "            \\\n"
 186           "              >0\n"
 187           "               (<)'\n"
 188           "~~~~~~~~~~~~~~~~~~~~~~\n"
 189           "\n");
 190 }
 191
 192 static void cf_somelist(disorder_client *c, char **argv,
 193                         int (*fn)(disorder_client *c,
 194                                   const char *arg, const char *re,
 195                                   char ***vecp, int *nvecp)) {
 196   char **vec;
 197   const char *re;
 198
 199   if(argv[1])
 200     re = xstrdup(argv[1] + 1);
 201   else
 202     re = 0;
 203   if(fn(c, argv[0], re, &vec, 0)) exit(EXIT_FAILURE);
 204   while(*vec)
 205     xprintf("%s\n", nullcheck(utf82mb(*vec++)));
 206 }
 207
 208 static int isarg_regexp(const char *s) {
 209   return s[0] == '~';
 210 }
 211
 212 static void cf_dirs(disorder_client *c,
 213                     char **argv) {
 214   cf_somelist(c, argv, disorder_directories);
 215 }
 216
 217 static void cf_files(disorder_client *c, char **argv) {
 218   cf_somelist(c, argv, disorder_files);
 219 }
 220
 221 static void cf_allfiles(disorder_client *c, char **argv) {
 222   cf_somelist(c, argv, disorder_allfiles);
 223 }
 224
 225 static void cf_get(disorder_client *c, char **argv) {
 226   char *value;
 227
 228   if(disorder_get(c, argv[0], argv[1], &value)) exit(EXIT_FAILURE);
 229   xprintf("%s\n", nullcheck(utf82mb(value)));
 230 }
 231
 232 static void cf_length(disorder_client *c, char **argv) {
 233   long length;
 234
 235   if(disorder_length(c, argv[0], &length)) exit(EXIT_FAILURE);
 236   xprintf("%ld\n", length);
 237 }
 238
 239 static void cf_set(disorder_client *c, char **argv) {
 240   if(disorder_set(c, argv[0], argv[1], argv[2])) exit(EXIT_FAILURE);
 241 }
 242
 243 static void cf_unset(disorder_client *c, char **argv) {
 244   if(disorder_unset(c, argv[0], argv[1])) exit(EXIT_FAILURE);
 245 }
 246
 247 static void cf_prefs(disorder_client *c, char **argv) {
 248   struct kvp *k;
 249
 250   if(disorder_prefs(c, argv[0], &k)) exit(EXIT_FAILURE);
 251   for(; k; k = k->next)
 252     xprintf("%s = %s\n",
 253             nullcheck(utf82mb(k->name)), nullcheck(utf82mb(k->value)));
 254 }
 255
 256 static void cf_search(disorder_client *c, char **argv) {
 257   char **results;
 258   int nresults, n;
 259
 260   if(disorder_search(c, *argv, &results, &nresults)) exit(EXIT_FAILURE);
 261   for(n = 0; n < nresults; ++n)
 262     xprintf("%s\n", nullcheck(utf82mb(results[n])));
 263 }
 264
 265 static void cf_random_disable(disorder_client *c,
 266                               char attribute((unused)) **argv) {
 267   if(disorder_random_disable(c)) exit(EXIT_FAILURE);
 268 }
 269
 270 static void cf_random_enable(disorder_client *c,
 271                              char attribute((unused)) **argv) {
 272   if(disorder_random_enable(c)) exit(EXIT_FAILURE);
 273 }
 274
 275 static void cf_stats(disorder_client *c,
 276                      char attribute((unused)) **argv) {
 277   char **vec;
 278
 279   if(disorder_stats(c, &vec, 0)) exit(EXIT_FAILURE);
 280   while(*vec)
 281       xprintf("%s\n", nullcheck(utf82mb(*vec++)));
 282 }
 283
 284 static void cf_get_volume(disorder_client *c,
 285                           char attribute((unused)) **argv) {
 286   int l, r;
 287
 288   if(disorder_get_volume(c, &l, &r)) exit(EXIT_FAILURE);
 289   xprintf("%d %d\n", l, r);
 290 }
 291
 292 static void cf_set_volume(disorder_client *c,
 293                           char **argv) {
 294   if(disorder_set_volume(c, atoi(argv[0]), atoi(argv[1]))) exit(EXIT_FAILURE);
 295 }
 296
 297 static void cf_become(disorder_client *c,
 298                       char **argv) {
 299   if(disorder_become(c, argv[0])) exit(EXIT_FAILURE);
 300 }
 301
 302 static void cf_log(disorder_client *c,
 303                    char attribute((unused)) **argv) {
 304   if(disorder_log(c, sink_stdio("stdout", stdout))) exit(EXIT_FAILURE);
 305 }
 306
 307 static void cf_move(disorder_client *c,
 308                    char **argv) {
 309   long n;
 310   int e;
 311
 312   if((e = xstrtol(&n, argv[1], 0, 10)))
 313     fatal(e, "cannot convert '%s'", argv[1]);
 314   if(n > INT_MAX || n < INT_MIN)
 315     fatal(e, "%ld out of range", n);
 316   if(disorder_move(c, argv[0], (int)n)) exit(EXIT_FAILURE);
 317 }
 318
 319 static void cf_part(disorder_client *c,
 320                     char **argv) {
 321   char *s;
 322
 323   if(disorder_part(c, &s, argv[0], argv[1], argv[2])) exit(EXIT_FAILURE);
 324   xprintf("%s\n", nullcheck(utf82mb(s)));
 325 }
 326
 327 static int isarg_filename(const char *s) {
 328   return s[0] == '/';
 329 }
 330
 331 static void cf_authorize(disorder_client attribute((unused)) *c,
 332                          char **argv) {
 333   if(!authorize(argv[0]))
 334     auto_reconfigure = 1;
 335 }
 336
 337 static void cf_resolve(disorder_client *c,
 338                        char **argv) {
 339   char *track;
 340
 341   if(disorder_resolve(c, &track, argv[0])) exit(EXIT_FAILURE);
 342   xprintf("%s\n", nullcheck(utf82mb(track)));
 343 }
 344
 345 static void cf_pause(disorder_client *c,
 346                         char attribute((unused)) **argv) {
 347   if(disorder_pause(c)) exit(EXIT_FAILURE);
 348 }
 349
 350 static void cf_resume(disorder_client *c,
 351                         char attribute((unused)) **argv) {
 352   if(disorder_resume(c)) exit(EXIT_FAILURE);
 353 }
 354
 355 static void cf_tags(disorder_client *c,
 356                      char attribute((unused)) **argv) {
 357   char **vec;
 358
 359   if(disorder_tags(c, &vec, 0)) exit(EXIT_FAILURE);
 360   while(*vec)
 361       xprintf("%s\n", nullcheck(utf82mb(*vec++)));
 362 }
 363
 364 static void cf_get_global(disorder_client *c, char **argv) {
 365   char *value;
 366
 367   if(disorder_get_global(c, argv[0], &value)) exit(EXIT_FAILURE);
 368   xprintf("%s\n", nullcheck(utf82mb(value)));
 369 }
 370
 371 static void cf_set_global(disorder_client *c, char **argv) {
 372   if(disorder_set_global(c, argv[0], argv[1])) exit(EXIT_FAILURE);
 373 }
 374
 375 static void cf_unset_global(disorder_client *c, char **argv) {
 376   if(disorder_unset_global(c, argv[0])) exit(EXIT_FAILURE);
 377 }
 378
 379 static const struct command {
 380   const char *name;
 381   int min, max;
 382   void (*fn)(disorder_client *c, char **);
 383   int (*isarg)(const char *);
 384   const char *argstr, *desc;
 385 } commands[] = {
 386   { "allfiles",       1, 2, cf_allfiles, isarg_regexp, "DIR [~REGEXP]",
 387                       "List all files and directories in DIR" },
 388   { "authorize",      1, 1, cf_authorize, 0, "USER",
 389                       "Authorize USER to connect to the server" },
 390   { "become",         1, 1, cf_become, 0, "USER",
 391                       "Become user USER" },
 392   { "dirs",           1, 2, cf_dirs, isarg_regexp, "DIR [~REGEXP]",
 393                       "List directories in DIR" },
 394   { "disable",        0, 0, cf_disable, 0, "",
 395                       "Disable play" },
 396   { "disable-random", 0, 0, cf_random_disable, 0, "",
 397                       "Disable random play" },
 398   { "enable",         0, 0, cf_enable, 0, "",
 399                       "Enable play" },
 400   { "enable-random",  0, 0, cf_random_enable, 0, "",
 401                       "Enable random play" },
 402   { "files",          1, 2, cf_files, isarg_regexp, "DIR [~REGEXP]",
 403                       "List files in DIR" },
 404   { "get",            2, 2, cf_get, 0, "TRACK NAME",
 405                       "Get a preference value" },
 406   { "get-global",     1, 1, cf_get_global, 0, "NAME",
 407                       "Get a global preference value" },
 408   { "get-volume",     0, 0, cf_get_volume, 0, "",
 409                       "Get the current volume" },
 410   { "length",         1, 1, cf_length, 0, "TRACK",
 411                       "Get the length of TRACK in seconds" },
 412   { "log",            0, 0, cf_log, 0, "",
 413                       "Copy event log to stdout" },
 414   { "move",           2, 2, cf_move, 0, "TRACK DELTA",
 415                       "Move a track in the queue" },
 416   { "part",           3, 3, cf_part, 0, "TRACK CONTEXT PART",
 417                       "Find a track name part" },
 418   { "pause",          0, 0, cf_pause, 0, "",
 419                       "Pause the currently playing track" },
 420   { "play",           1, INT_MAX, cf_play, isarg_filename, "TRACKS...",
 421                       "Add TRACKS to the end of the queue" },
 422   { "playing",        0, 0, cf_playing, 0, "",
 423                       "Report the playing track" },
 424   { "prefs",          1, 1, cf_prefs, 0, "TRACK",
 425                       "Display all the preferences for TRACK" },
 426   { "quack",          0, 0, cf_quack, 0, 0, 0 },
 427   { "queue",          0, 0, cf_queue, 0, "",
 428                       "Display the current queue" },
 429   { "random-disable", 0, 0, cf_random_disable, 0, "",
 430                       "Disable random play" },
 431   { "random-enable",  0, 0, cf_random_enable, 0, "",
 432                       "Enable random play" },
 433   { "recent",         0, 0, cf_recent, 0, "",
 434                       "Display recently played track" },
 435   { "reconfigure",    0, 0, cf_reconfigure, 0, "",
 436                       "Reconfigure the daemon" },
 437   { "remove",         1, 1, cf_remove, 0, "TRACK",
 438                       "Remove a track from the queue" },
 439   { "rescan",         0, 0, cf_rescan, 0, "",
 440                       "Rescan for new tracks" },
 441   { "resolve",        1, 1, cf_resolve, 0, "TRACK",
 442                       "Resolve alias for TRACK" },
 443   { "resume",         0, 0, cf_resume, 0, "",
 444                       "Resume after a pause" },
 445   { "scratch",        0, 0, cf_scratch, 0, "",
 446                       "Scratch the currently playing track" },
 447   { "scratch-id",     1, 1, cf_scratch, 0, "ID",
 448                       "Scratch the currently playing track" },
 449   { "search",         1, 1, cf_search, 0, "WORDS",
 450                       "Display tracks matching all the words" },
 451   { "set",            3, 3, cf_set, 0, "TRACK NAME VALUE",
 452                       "Set a preference value" },
 453   { "set-global",     2, 2, cf_set_global, 0, "NAME VALUE",
 454                       "Set a global preference value" },
 455   { "set-volume",     2, 2, cf_set_volume, 0, "LEFT RIGHT",
 456                       "Set the volume" },
 457   { "shutdown",       0, 0, cf_shutdown, 0, "",
 458                       "Shut down the daemon" },
 459   { "stats",          0, 0, cf_stats, 0, "",
 460                       "Display server statistics" },
 461   { "tags",           0, 0, cf_tags, 0, "",
 462                       "List known tags" },
 463   { "unset",          2, 2, cf_unset, 0, "TRACK NAME",
 464                       "Unset a preference" },
 465   { "unset-global",   1, 1, cf_unset_global, 0, "NAME",
 466                       "Unset a global preference" },
 467   { "version",        0, 0, cf_version, 0, "",
 468                       "Display the server version" },
 469 };
 470
 471 static void help_commands(void) {
 472   unsigned n, max = 0, l;
 473
 474   xprintf("Command summary:\n");
 475   for(n = 0; n < sizeof commands / sizeof *commands; ++n) {
 476     if(!commands[n].desc) continue;
 477     l = strlen(commands[n].name);
 478     if(*commands[n].argstr)
 479       l += strlen(commands[n].argstr) + 1;
 480     if(l > max)
 481       max = l;
 482   }
 483   for(n = 0; n < sizeof commands / sizeof *commands; ++n) {
 484     if(!commands[n].desc) continue;
 485     l = strlen(commands[n].name);
 486     if(*commands[n].argstr)
 487       l += strlen(commands[n].argstr) + 1;
 488     xprintf("  %s%s%s%*s  %s\n", commands[n].name,
 489             *commands[n].argstr ? " " : "",
 490             commands[n].argstr,
 491             max - l, "",
 492             commands[n].desc);
 493   }
 494   xfclose(stdout);
 495   exit(0);
 496 }
 497
 498 int main(int argc, char **argv) {
 499   int n, i, j;
 500   disorder_client *c = 0;
 501   const char *s;
 502   int status = 0;
 503   struct vector args;
 504
 505   mem_init();
 506   /* garbage-collect PCRE's memory */
 507   pcre_malloc = xmalloc;
 508   pcre_free = xfree;
 509   if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
 510   while((n = getopt_long(argc, argv, "hVc:dHL", options, 0)) >= 0) {
 511     switch(n) {
 512     case 'h': help();
 513     case 'H': help_commands();
 514     case 'V': version();
 515     case 'c': configfile = optarg; break;
 516     case 'd': debugging = 1; break;
 517     default: fatal(0, "invalid option");
 518     }
 519   }
 520   if(config_read()) fatal(0, "cannot read configuration");
 521   if(!(c = disorder_new(1))) exit(EXIT_FAILURE);
 522   s = config_get_file("socket");
 523   if(disorder_connect(c)) exit(EXIT_FAILURE);
 524   n = optind;
 525   /* accumulate command args */
 526   while(n < argc) {
 527     if((i = TABLE_FIND(commands, struct command, name, argv[n])) < 0)
 528       fatal(0, "unknown command '%s'", argv[n]);
 529     if(n + commands[i].min >= argc)
 530       fatal(0, "missing arguments to '%s'", argv[n]);
 531     n++;
 532     vector_init(&args);
 533     for(j = 0; j < commands[i].min; ++j)
 534       vector_append(&args, nullcheck(mb2utf8(argv[n + j])));
 535     for(; j < commands[i].max
 536           && n + j < argc
 537           && commands[i].isarg(argv[n + j]); ++j)
 538       vector_append(&args, nullcheck(mb2utf8(argv[n + j])));
 539     vector_terminate(&args);
 540     commands[i].fn(c, args.vec);
 541     n += j;
 542   }
 543   if(auto_reconfigure) {
 544     assert(c != 0);
 545     if(disorder_reconfigure(c)) exit(EXIT_FAILURE);
 546   }
 547   if(c && disorder_close(c)) exit(EXIT_FAILURE);
 548   if(fclose(stdout) < 0) fatal(errno, "error closing stdout");
 549   return status;
 550 }
 551
 552 /*
 553 Local Variables:
 554 c-basic-offset:2
 555 comment-column:40
 556 End:
 557 */