code.delx.au - pulseaudio/blob - polyp/cli-command.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 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 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 <stdio.h>
  27 #include <string.h>
  28 #include <assert.h>
  29 #include <stdlib.h>
  30 #include <errno.h>
  31
  32 #include "cli-command.h"
  33 #include "module.h"
  34 #include "sink.h"
  35 #include "source.h"
  36 #include "client.h"
  37 #include "sink-input.h"
  38 #include "source-output.h"
  39 #include "tokenizer.h"
  40 #include "strbuf.h"
  41 #include "namereg.h"
  42 #include "clitext.h"
  43
  44 struct command {
  45     const char *name;
  46     int (*proc) (struct pa_core *c, struct pa_tokenizer*t, struct pa_strbuf *buf, int *fail, int *verbose);
  47     const char *help;
  48     unsigned args;
  49 };
  50
  51 static int pa_cli_command_exit(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  52 static int pa_cli_command_help(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  53 static int pa_cli_command_modules(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  54 static int pa_cli_command_clients(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  55 static int pa_cli_command_sinks(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  56 static int pa_cli_command_sources(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  57 static int pa_cli_command_sink_inputs(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  58 static int pa_cli_command_source_outputs(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  59 static int pa_cli_command_stat(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  60 static int pa_cli_command_info(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  61 static int pa_cli_command_load(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  62 static int pa_cli_command_unload(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  63 static int pa_cli_command_sink_volume(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  64 static int pa_cli_command_sink_input_volume(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  65 static int pa_cli_command_sink_default(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  66 static int pa_cli_command_source_default(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  67 static int pa_cli_command_kill_client(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  68 static int pa_cli_command_kill_sink_input(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  69 static int pa_cli_command_kill_source_output(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose);
  70
  71 static const struct command commands[] = {
  72     { "exit",                    pa_cli_command_exit,               "Terminate the daemon",         1 },
  73     { "help",                    pa_cli_command_help,               "Show this help",               1 },
  74     { "modules",                 pa_cli_command_modules,            "List loaded modules",          1 },
  75     { "sinks",                   pa_cli_command_sinks,              "List loaded sinks",            1 },
  76     { "sources",                 pa_cli_command_sources,            "List loaded sources",          1 },
  77     { "clients",                 pa_cli_command_clients,            "List loaded clients",          1 },
  78     { "sink_inputs",             pa_cli_command_sink_inputs,        "List sink inputs",             1 },
  79     { "source_outputs",          pa_cli_command_source_outputs,     "List source outputs",          1 },
  80     { "stat",                    pa_cli_command_stat,               "Show memory block statistics", 1 },
  81     { "info",                    pa_cli_command_info,               "Show comprehensive status",    1 },
  82     { "ls",                      pa_cli_command_info,               NULL,                           1 },
  83     { "list",                    pa_cli_command_info,               NULL,                           1 },
  84     { "load",                    pa_cli_command_load,               "Load a module (args: name, arguments)",                     3},
  85     { "unload",                  pa_cli_command_unload,             "Unload a module (args: index)",                             2},
  86     { "sink_volume",             pa_cli_command_sink_volume,        "Set the volume of a sink (args: index|name, volume)",             3},
  87     { "sink_input_volume",       pa_cli_command_sink_input_volume,  "Set the volume of a sink input (args: index|name, volume)", 3},
  88     { "sink_default",            pa_cli_command_sink_default,       "Set the default sink (args: index|name)", 2},
  89     { "source_default",          pa_cli_command_source_default,     "Set the default source (args: index|name)", 2},
  90     { "kill_client",             pa_cli_command_kill_client,        "Kill a client (args: index)", 2},
  91     { "kill_sink_input",         pa_cli_command_kill_sink_input,    "Kill a sink input (args: index)", 2},
  92     { "kill_source_output",      pa_cli_command_kill_source_output, "Kill a source output (args: index)", 2},
  93     { NULL, NULL, NULL, 0 }
  94 };
  95
  96 static const char whitespace[] = " \t\n\r";
  97 static const char linebreak[] = "\n\r";
  98
  99 static uint32_t parse_index(const char *n) {
 100     long index;
 101     char *x;
 102     index = strtol(n, &x, 0);
 103     if (!x || *x != 0 || index < 0)
 104         return (uint32_t) PA_IDXSET_INVALID;
 105
 106     return (uint32_t) index;
 107 }
 108
 109 static int pa_cli_command_exit(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 110     assert(c && c->mainloop && t);
 111     c->mainloop->quit(c->mainloop, 0);
 112     return 0;
 113 }
 114
 115 static int pa_cli_command_help(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 116     const struct command*command;
 117     assert(c && t && buf);
 118
 119     pa_strbuf_puts(buf, "Available commands:\n");
 120
 121     for (command = commands; command->name; command++)
 122         if (command->help)
 123             pa_strbuf_printf(buf, "    %-20s %s\n", command->name, command->help);
 124     return 0;
 125 }
 126
 127 static int pa_cli_command_modules(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 128     char *s;
 129     assert(c && t);
 130     s = pa_module_list_to_string(c);
 131     assert(s);
 132     pa_strbuf_puts(buf, s);
 133     free(s);
 134     return 0;
 135 }
 136
 137 static int pa_cli_command_clients(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 138     char *s;
 139     assert(c && t);
 140     s = pa_client_list_to_string(c);
 141     assert(s);
 142     pa_strbuf_puts(buf, s);
 143     free(s);
 144     return 0;
 145 }
 146
 147 static int pa_cli_command_sinks(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 148     char *s;
 149     assert(c && t);
 150     s = pa_sink_list_to_string(c);
 151     assert(s);
 152     pa_strbuf_puts(buf, s);
 153     free(s);
 154     return 0;
 155 }
 156
 157 static int pa_cli_command_sources(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 158     char *s;
 159     assert(c && t);
 160     s = pa_source_list_to_string(c);
 161     assert(s);
 162     pa_strbuf_puts(buf, s);
 163     free(s);
 164     return 0;
 165 }
 166
 167 static int pa_cli_command_sink_inputs(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 168     char *s;
 169     assert(c && t);
 170     s = pa_sink_input_list_to_string(c);
 171     assert(s);
 172     pa_strbuf_puts(buf, s);
 173     free(s);
 174     return 0;
 175 }
 176
 177 static int pa_cli_command_source_outputs(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 178     char *s;
 179     assert(c && t);
 180     s = pa_source_output_list_to_string(c);
 181     assert(s);
 182     pa_strbuf_puts(buf, s);
 183     free(s);
 184     return 0;
 185 }
 186
 187 static int pa_cli_command_stat(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 188     assert(c && t);
 189     pa_strbuf_printf(buf, "Memory blocks allocated: %u, total size: %u bytes.\n", pa_memblock_get_count(), pa_memblock_get_total());
 190     return 0;
 191 }
 192
 193 static int pa_cli_command_info(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 194     assert(c && t);
 195     pa_cli_command_stat(c, t, buf, fail, verbose);
 196     pa_cli_command_modules(c, t, buf, fail, verbose);
 197     pa_cli_command_sinks(c, t, buf, fail, verbose);
 198     pa_cli_command_sources(c, t, buf, fail, verbose);
 199     pa_cli_command_clients(c, t, buf, fail, verbose);
 200     pa_cli_command_sink_inputs(c, t, buf, fail, verbose);
 201     pa_cli_command_source_outputs(c, t, buf, fail, verbose);
 202     return 0;
 203 }
 204
 205 static int pa_cli_command_load(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 206     struct pa_module *m;
 207     const char *name;
 208     char txt[256];
 209     assert(c && t);
 210
 211     if (!(name = pa_tokenizer_get(t, 1))) {
 212         pa_strbuf_puts(buf, "You need to specify the module name and optionally arguments.\n");
 213         return -1;
 214     }
 215
 216     if (!(m = pa_module_load(c, name,  pa_tokenizer_get(t, 2)))) {
 217         pa_strbuf_puts(buf, "Module load failed.\n");
 218         return -1;
 219     }
 220
 221     if (*verbose) {
 222         snprintf(txt, sizeof(txt), "Module successfully loaded, index: %u.\n", m->index);
 223         pa_strbuf_puts(buf, txt);
 224     }
 225     return 0;
 226 }
 227
 228 static int pa_cli_command_unload(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 229     struct pa_module *m;
 230     uint32_t index;
 231     const char *i;
 232     char *e;
 233     assert(c && t);
 234
 235     if (!(i = pa_tokenizer_get(t, 1))) {
 236         pa_strbuf_puts(buf, "You need to specify the module index.\n");
 237         return -1;
 238     }
 239
 240     index = (uint32_t) strtoul(i, &e, 10);
 241     if (*e || !(m = pa_idxset_get_by_index(c->modules, index))) {
 242         pa_strbuf_puts(buf, "Invalid module index.\n");
 243         return -1;
 244     }
 245
 246     pa_module_unload_request(c, m);
 247     return 0;
 248 }
 249
 250 static int pa_cli_command_sink_volume(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 251     const char *n, *v;
 252     char *x = NULL;
 253     struct pa_sink *sink;
 254     long volume;
 255
 256     if (!(n = pa_tokenizer_get(t, 1))) {
 257         pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
 258         return -1;
 259     }
 260
 261     if (!(v = pa_tokenizer_get(t, 2))) {
 262         pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x100 is normal volume)\n");
 263         return -1;
 264     }
 265
 266     volume = strtol(v, &x, 0);
 267     if (!x || *x != 0 || volume < 0) {
 268         pa_strbuf_puts(buf, "Failed to parse volume.\n");
 269         return -1;
 270     }
 271
 272     if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
 273         pa_strbuf_puts(buf, "No sink found by this name or index.\n");
 274         return -1;
 275     }
 276
 277     sink->volume = (uint32_t) volume;
 278     return 0;
 279 }
 280
 281 static int pa_cli_command_sink_input_volume(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 282     const char *n, *v;
 283     struct pa_sink_input *si;
 284     long volume;
 285     uint32_t index;
 286     char *x;
 287
 288     if (!(n = pa_tokenizer_get(t, 1))) {
 289         pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
 290         return -1;
 291     }
 292
 293     if ((index = parse_index(n)) == PA_IDXSET_INVALID) {
 294         pa_strbuf_puts(buf, "Failed to parse index.\n");
 295         return -1;
 296     }
 297
 298     if (!(v = pa_tokenizer_get(t, 2))) {
 299         pa_strbuf_puts(buf, "You need to specify a volume >= 0. (0 is muted, 0x100 is normal volume)\n");
 300         return -1;
 301     }
 302
 303     x = NULL;
 304     volume = strtol(v, &x, 0);
 305     if (!x || *x != 0 || volume < 0) {
 306         pa_strbuf_puts(buf, "Failed to parse volume.\n");
 307         return -1;
 308     }
 309
 310     if (!(si = pa_idxset_get_by_index(c->sink_inputs, (uint32_t) index))) {
 311         pa_strbuf_puts(buf, "No sink input found with this index.\n");
 312         return -1;
 313     }
 314
 315     si->volume = (uint32_t) volume;
 316     return 0;
 317 }
 318
 319 static int pa_cli_command_sink_default(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 320     const char *n;
 321     struct pa_sink *sink;
 322     assert(c && t);
 323
 324     if (!(n = pa_tokenizer_get(t, 1))) {
 325         pa_strbuf_puts(buf, "You need to specify a sink either by its name or its index.\n");
 326         return -1;
 327     }
 328
 329     if (!(sink = pa_namereg_get(c, n, PA_NAMEREG_SINK))) {
 330         pa_strbuf_puts(buf, "No sink found by this name or index.\n");
 331         return -1;
 332     }
 333
 334     c->default_sink_index = sink->index;
 335     return 0;
 336 }
 337
 338 static int pa_cli_command_source_default(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 339     const char *n;
 340     struct pa_source *source;
 341     assert(c && t);
 342
 343     if (!(n = pa_tokenizer_get(t, 1))) {
 344         pa_strbuf_puts(buf, "You need to specify a source either by its name or its index.\n");
 345         return -1;
 346     }
 347
 348     if (!(source = pa_namereg_get(c, n, PA_NAMEREG_SOURCE))) {
 349         pa_strbuf_puts(buf, "No source found by this name or index.\n");
 350         return -1;
 351     }
 352
 353     c->default_source_index = source->index;
 354     return 0;
 355 }
 356
 357 static int pa_cli_command_kill_client(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 358     const char *n;
 359     struct pa_client *client;
 360     uint32_t index;
 361     assert(c && t);
 362
 363     if (!(n = pa_tokenizer_get(t, 1))) {
 364         pa_strbuf_puts(buf, "You need to specify a client by its index.\n");
 365         return -1;
 366     }
 367
 368     if ((index = parse_index(n)) == PA_IDXSET_INVALID) {
 369         pa_strbuf_puts(buf, "Failed to parse index.\n");
 370         return -1;
 371     }
 372
 373     if (!(client = pa_idxset_get_by_index(c->clients, index))) {
 374         pa_strbuf_puts(buf, "No client found by this index.\n");
 375         return -1;
 376     }
 377
 378     pa_client_kill(client);
 379     return 0;
 380 }
 381
 382 static int pa_cli_command_kill_sink_input(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 383     const char *n;
 384     struct pa_sink_input *sink_input;
 385     uint32_t index;
 386     assert(c && t);
 387
 388     if (!(n = pa_tokenizer_get(t, 1))) {
 389         pa_strbuf_puts(buf, "You need to specify a sink input by its index.\n");
 390         return -1;
 391     }
 392
 393     if ((index = parse_index(n)) == PA_IDXSET_INVALID) {
 394         pa_strbuf_puts(buf, "Failed to parse index.\n");
 395         return -1;
 396     }
 397
 398     if (!(sink_input = pa_idxset_get_by_index(c->sink_inputs, index))) {
 399         pa_strbuf_puts(buf, "No sink input found by this index.\n");
 400         return -1;
 401     }
 402
 403     pa_sink_input_kill(sink_input);
 404     return 0;
 405 }
 406
 407 static int pa_cli_command_kill_source_output(struct pa_core *c, struct pa_tokenizer *t, struct pa_strbuf *buf, int *fail, int *verbose) {
 408     const char *n;
 409     struct pa_source_output *source_output;
 410     uint32_t index;
 411     assert(c && t);
 412
 413     if (!(n = pa_tokenizer_get(t, 1))) {
 414         pa_strbuf_puts(buf, "You need to specify a source output by its index.\n");
 415         return -1;
 416     }
 417
 418     if ((index = parse_index(n)) == PA_IDXSET_INVALID) {
 419         pa_strbuf_puts(buf, "Failed to parse index.\n");
 420         return -1;
 421     }
 422
 423     if (!(source_output = pa_idxset_get_by_index(c->source_outputs, index))) {
 424         pa_strbuf_puts(buf, "No source output found by this index.\n");
 425         return -1;
 426     }
 427
 428     pa_source_output_kill(source_output);
 429     return 0;
 430 }
 431
 432 int pa_cli_command_execute_line(struct pa_core *c, const char *s, struct pa_strbuf *buf, int *fail, int *verbose) {
 433     const char *cs;
 434
 435     cs = s+strspn(s, whitespace);
 436
 437     if (*cs == '#' || !*cs)
 438         return 0;
 439     else if (*cs == '.') {
 440         static const char fail_meta[] = ".fail";
 441         static const char nofail_meta[] = ".nofail";
 442         static const char verbose_meta[] = ".verbose";
 443         static const char noverbose_meta[] = ".noverbose";
 444
 445         if (!strcmp(cs, verbose_meta))
 446             *verbose = 1;
 447         else if (!strcmp(cs, noverbose_meta))
 448             *verbose = 0;
 449         else if (!strcmp(cs, fail_meta))
 450             *fail = 1;
 451         else if (!strcmp(cs, nofail_meta))
 452             *fail = 0;
 453         else {
 454             size_t l;
 455             static const char include_meta[] = ".include";
 456             l = strcspn(cs, whitespace);
 457
 458             if (l == sizeof(include_meta)-1 && !strncmp(cs, include_meta, l)) {
 459                 const char *filename = cs+l+strspn(cs+l, whitespace);
 460
 461                 if (pa_cli_command_execute_file(c, filename, buf, fail, verbose) < 0)
 462                     if (*fail) return -1;
 463             } else {
 464                 pa_strbuf_printf(buf, "Invalid meta command: %s\n", cs);
 465                 if (*fail) return -1;
 466             }
 467         }
 468     } else {
 469         const struct command*command;
 470         int unknown = 1;
 471         size_t l;
 472
 473         l = strcspn(cs, whitespace);
 474
 475         for (command = commands; command->name; command++)
 476             if (strlen(command->name) == l && !strncmp(cs, command->name, l)) {
 477                 int ret;
 478                 struct pa_tokenizer *t = pa_tokenizer_new(cs, command->args);
 479                 assert(t);
 480                 ret = command->proc(c, t, buf, fail, verbose);
 481                 pa_tokenizer_free(t);
 482                 unknown = 0;
 483
 484                 if (ret < 0 && *fail)
 485                     return -1;
 486
 487                 break;
 488             }
 489
 490         if (unknown) {
 491             pa_strbuf_printf(buf, "Unknown command: %s\n", cs);
 492             if (*fail)
 493                 return -1;
 494         }
 495     }
 496
 497     return 0;
 498 }
 499
 500 int pa_cli_command_execute_file(struct pa_core *c, const char *fn, struct pa_strbuf *buf, int *fail, int *verbose) {
 501     char line[256];
 502     FILE *f = NULL;
 503     int ret = -1;
 504     assert(c && fn && buf);
 505
 506     if (!(f = fopen(fn, "r"))) {
 507         pa_strbuf_printf(buf, "open('%s') failed: %s\n", fn, strerror(errno));
 508         if (!*fail)
 509             ret = 0;
 510         goto fail;
 511     }
 512
 513     if (*verbose)
 514         pa_strbuf_printf(buf, "Executing file: '%s'\n", fn);
 515
 516     while (fgets(line, sizeof(line), f)) {
 517         char *e = line + strcspn(line, linebreak);
 518         *e = 0;
 519
 520         if (pa_cli_command_execute_line(c, line, buf, fail, verbose) < 0 && *fail)
 521             goto fail;
 522     }
 523
 524     if (*verbose)
 525         pa_strbuf_printf(buf, "Executed file: '%s'\n", fn);
 526
 527     ret = 0;
 528
 529 fail:
 530     if (f)
 531         fclose(f);
 532
 533     return ret;
 534 }
 535
 536 int pa_cli_command_execute(struct pa_core *c, const char *s, struct pa_strbuf *buf, int *fail, int *verbose) {
 537     const char *p;
 538     assert(c && s && buf && fail && verbose);
 539
 540     p = s;
 541     while (*p) {
 542         size_t l = strcspn(p, linebreak);
 543         char *line = strndup(p, l);
 544         assert(line);
 545
 546         if (pa_cli_command_execute_line(c, line, buf, fail, verbose) < 0&& *fail) {
 547             free(line);
 548             return -1;
 549         }
 550         free(line);
 551
 552         p += l;
 553         p += strspn(p, linebreak);
 554     }
 555
 556     return 0;
 557 }