polyp/protocol-native.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 <string.h>
  27 #include <stdio.h>
  28 #include <assert.h>
  29 #include <stdlib.h>
  30
  31 #include "protocol-native.h"
  32 #include "native-common.h"
  33 #include "packet.h"
  34 #include "client.h"
  35 #include "source-output.h"
  36 #include "sink-input.h"
  37 #include "pstream.h"
  38 #include "tagstruct.h"
  39 #include "pdispatch.h"
  40 #include "pstream-util.h"
  41 #include "authkey.h"
  42 #include "namereg.h"
  43 #include "scache.h"
  44 #include "xmalloc.h"
  45 #include "util.h"
  46 #include "subscribe.h"
  47 #include "log.h"
  48
  49 struct connection;
  50 struct pa_protocol_native;
  51
  52 struct record_stream {
  53     struct connection *connection;
  54     uint32_t index;
  55     struct pa_source_output *source_output;
  56     struct pa_memblockq *memblockq;
  57     size_t fragment_size;
  58 };
  59
  60 struct playback_stream {
  61     int type;
  62     struct connection *connection;
  63     uint32_t index;
  64     struct pa_sink_input *sink_input;
  65     struct pa_memblockq *memblockq;
  66     size_t requested_bytes;
  67     int drain_request;
  68     uint32_t drain_tag;
  69 };
  70
  71 struct upload_stream {
  72     int type;
  73     struct connection *connection;
  74     uint32_t index;
  75     struct pa_memchunk memchunk;
  76     size_t length;
  77     char *name;
  78     struct pa_sample_spec sample_spec;
  79 };
  80
  81 struct output_stream {
  82     int type;
  83 };
  84
  85 enum {
  86     UPLOAD_STREAM,
  87     PLAYBACK_STREAM
  88 };
  89
  90 struct connection {
  91     int authorized;
  92     struct pa_protocol_native *protocol;
  93     struct pa_client *client;
  94     struct pa_pstream *pstream;
  95     struct pa_pdispatch *pdispatch;
  96     struct pa_idxset *record_streams, *output_streams;
  97     uint32_t rrobin_index;
  98     struct pa_subscription *subscription;
  99 };
 100
 101 struct pa_protocol_native {
 102     struct pa_module *module;
 103     int public;
 104     struct pa_core *core;
 105     struct pa_socket_server *server;
 106     struct pa_idxset *connections;
 107     uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
 108 };
 109
 110 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
 111 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
 112 static void sink_input_kill_cb(struct pa_sink_input *i);
 113 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i);
 114
 115 static void request_bytes(struct playback_stream*s);
 116
 117 static void source_output_kill_cb(struct pa_source_output *o);
 118 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
 119
 120 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 121 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 122 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 123 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 124 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 125 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 126 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 127 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 128 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 129 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 130 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 131 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 132 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 133 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 134 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 135 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 136 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 137 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 138 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 139 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 140 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 141 static void command_set_default_sink_or_source(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 142
 143 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
 144     [PA_COMMAND_ERROR] = { NULL },
 145     [PA_COMMAND_TIMEOUT] = { NULL },
 146     [PA_COMMAND_REPLY] = { NULL },
 147     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
 148     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_stream },
 149     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
 150     [PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
 151     [PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_stream },
 152     [PA_COMMAND_AUTH] = { command_auth },
 153     [PA_COMMAND_REQUEST] = { NULL },
 154     [PA_COMMAND_EXIT] = { command_exit },
 155     [PA_COMMAND_SET_NAME] = { command_set_name },
 156     [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
 157     [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
 158     [PA_COMMAND_STAT] = { command_stat },
 159     [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
 160     [PA_COMMAND_CREATE_UPLOAD_STREAM] = { command_create_upload_stream },
 161     [PA_COMMAND_DELETE_UPLOAD_STREAM] = { command_delete_stream },
 162     [PA_COMMAND_FINISH_UPLOAD_STREAM] = { command_finish_upload_stream },
 163     [PA_COMMAND_PLAY_SAMPLE] = { command_play_sample },
 164     [PA_COMMAND_REMOVE_SAMPLE] = { command_remove_sample },
 165     [PA_COMMAND_GET_SINK_INFO] = { command_get_info },
 166     [PA_COMMAND_GET_SOURCE_INFO] = { command_get_info },
 167     [PA_COMMAND_GET_CLIENT_INFO] = { command_get_info },
 168     [PA_COMMAND_GET_MODULE_INFO] = { command_get_info },
 169     [PA_COMMAND_GET_SINK_INPUT_INFO] = { command_get_info },
 170     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = { command_get_info },
 171     [PA_COMMAND_GET_SAMPLE_INFO] = { command_get_info },
 172     [PA_COMMAND_GET_SINK_INFO_LIST] = { command_get_info_list },
 173     [PA_COMMAND_GET_SOURCE_INFO_LIST] = { command_get_info_list },
 174     [PA_COMMAND_GET_MODULE_INFO_LIST] = { command_get_info_list },
 175     [PA_COMMAND_GET_CLIENT_INFO_LIST] = { command_get_info_list },
 176     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = { command_get_info_list },
 177     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = { command_get_info_list },
 178     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = { command_get_info_list },
 179     [PA_COMMAND_GET_SERVER_INFO] = { command_get_server_info },
 180     [PA_COMMAND_SUBSCRIBE] = { command_subscribe },
 181     [PA_COMMAND_SET_SINK_VOLUME] = { command_set_volume },
 182     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = { command_set_volume },
 183     [PA_COMMAND_CORK_PLAYBACK_STREAM] = { command_cork_playback_stream },
 184     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 185     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 186     [PA_COMMAND_SET_DEFAULT_SINK] = { command_set_default_sink_or_source },
 187     [PA_COMMAND_SET_DEFAULT_SOURCE] = { command_set_default_sink_or_source },
 188 };
 189
 190 /* structure management */
 191
 192 static struct upload_stream* upload_stream_new(struct connection *c, const struct pa_sample_spec *ss, const char *name, size_t length) {
 193     struct upload_stream *s;
 194     assert(c && ss && name && length);
 195
 196     s = pa_xmalloc(sizeof(struct upload_stream));
 197     s->type = UPLOAD_STREAM;
 198     s->connection = c;
 199     s->sample_spec = *ss;
 200     s->name = pa_xstrdup(name);
 201
 202     s->memchunk.memblock = NULL;
 203     s->memchunk.index = 0;
 204     s->memchunk.length = 0;
 205
 206     s->length = length;
 207
 208     pa_idxset_put(c->output_streams, s, &s->index);
 209     return s;
 210 }
 211
 212 static void upload_stream_free(struct upload_stream *o) {
 213     assert(o && o->connection);
 214
 215     pa_idxset_remove_by_data(o->connection->output_streams, o, NULL);
 216
 217     pa_xfree(o->name);
 218
 219     if (o->memchunk.memblock)
 220         pa_memblock_unref(o->memchunk.memblock);
 221
 222     pa_xfree(o);
 223 }
 224
 225 static struct record_stream* record_stream_new(struct connection *c, struct pa_source *source, const struct pa_sample_spec *ss, const char *name, size_t maxlength, size_t fragment_size) {
 226     struct record_stream *s;
 227     struct pa_source_output *source_output;
 228     size_t base;
 229     assert(c && source && ss && name && maxlength);
 230
 231     if (!(source_output = pa_source_output_new(source, name, ss)))
 232         return NULL;
 233
 234     s = pa_xmalloc(sizeof(struct record_stream));
 235     s->connection = c;
 236     s->source_output = source_output;
 237     s->source_output->push = source_output_push_cb;
 238     s->source_output->kill = source_output_kill_cb;
 239     s->source_output->userdata = s;
 240     s->source_output->owner = c->protocol->module;
 241     s->source_output->client = c->client;
 242
 243     s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_frame_size(ss), 0, 0, c->protocol->core->memblock_stat);
 244     assert(s->memblockq);
 245
 246     s->fragment_size = (fragment_size/base)*base;
 247     if (!s->fragment_size)
 248         s->fragment_size = base;
 249
 250     pa_idxset_put(c->record_streams, s, &s->index);
 251     return s;
 252 }
 253
 254 static void record_stream_free(struct record_stream* r) {
 255     assert(r && r->connection);
 256
 257     pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
 258     pa_source_output_free(r->source_output);
 259     pa_memblockq_free(r->memblockq);
 260     pa_xfree(r);
 261 }
 262
 263 static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, const struct pa_sample_spec *ss, const char *name,
 264                                                    size_t maxlength,
 265                                                    size_t tlength,
 266                                                    size_t prebuf,
 267                                                    size_t minreq) {
 268     struct playback_stream *s;
 269     struct pa_sink_input *sink_input;
 270     assert(c && sink && ss && name && maxlength);
 271
 272     if (!(sink_input = pa_sink_input_new(sink, name, ss)))
 273         return NULL;
 274
 275     s = pa_xmalloc(sizeof(struct playback_stream));
 276     s->type = PLAYBACK_STREAM;
 277     s->connection = c;
 278     s->sink_input = sink_input;
 279
 280     s->sink_input->peek = sink_input_peek_cb;
 281     s->sink_input->drop = sink_input_drop_cb;
 282     s->sink_input->kill = sink_input_kill_cb;
 283     s->sink_input->get_latency = sink_input_get_latency_cb;
 284     s->sink_input->userdata = s;
 285     s->sink_input->owner = c->protocol->module;
 286     s->sink_input->client = c->client;
 287
 288     s->memblockq = pa_memblockq_new(maxlength, tlength, pa_frame_size(ss), prebuf, minreq, c->protocol->core->memblock_stat);
 289     assert(s->memblockq);
 290
 291     s->requested_bytes = 0;
 292     s->drain_request = 0;
 293
 294     pa_idxset_put(c->output_streams, s, &s->index);
 295     return s;
 296 }
 297
 298 static void playback_stream_free(struct playback_stream* p) {
 299     assert(p && p->connection);
 300
 301     if (p->drain_request)
 302         pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
 303
 304     pa_idxset_remove_by_data(p->connection->output_streams, p, NULL);
 305     pa_sink_input_free(p->sink_input);
 306     pa_memblockq_free(p->memblockq);
 307     pa_xfree(p);
 308 }
 309
 310 static void connection_free(struct connection *c) {
 311     struct record_stream *r;
 312     struct output_stream *o;
 313     assert(c && c->protocol);
 314
 315     pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
 316     while ((r = pa_idxset_first(c->record_streams, NULL)))
 317         record_stream_free(r);
 318     pa_idxset_free(c->record_streams, NULL, NULL);
 319
 320     while ((o = pa_idxset_first(c->output_streams, NULL)))
 321         if (o->type == PLAYBACK_STREAM)
 322             playback_stream_free((struct playback_stream*) o);
 323         else
 324             upload_stream_free((struct upload_stream*) o);
 325     pa_idxset_free(c->output_streams, NULL, NULL);
 326
 327     pa_pdispatch_unref(c->pdispatch);
 328     pa_pstream_close(c->pstream);
 329     pa_pstream_unref(c->pstream);
 330     pa_client_free(c->client);
 331
 332     if (c->subscription)
 333         pa_subscription_free(c->subscription);
 334
 335     pa_xfree(c);
 336 }
 337
 338 static void request_bytes(struct playback_stream *s) {
 339     struct pa_tagstruct *t;
 340     size_t l;
 341     assert(s);
 342
 343     if (!(l = pa_memblockq_missing(s->memblockq)))
 344         return;
 345
 346     if (l <= s->requested_bytes)
 347         return;
 348
 349     l -= s->requested_bytes;
 350
 351     if (l < pa_memblockq_get_minreq(s->memblockq))
 352         return;
 353
 354     s->requested_bytes += l;
 355
 356     t = pa_tagstruct_new(NULL, 0);
 357     assert(t);
 358     pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 359     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 360     pa_tagstruct_putu32(t, s->index);
 361     pa_tagstruct_putu32(t, l);
 362     pa_pstream_send_tagstruct(s->connection->pstream, t);
 363
 364 /*     pa_log(__FILE__": Requesting %u bytes\n", l); */
 365 }
 366
 367 static void send_memblock(struct connection *c) {
 368     uint32_t start;
 369     struct record_stream *r;
 370
 371     start = PA_IDXSET_INVALID;
 372     for (;;) {
 373         struct pa_memchunk chunk;
 374
 375         if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
 376             return;
 377
 378         if (start == PA_IDXSET_INVALID)
 379             start = c->rrobin_index;
 380         else if (start == c->rrobin_index)
 381             return;
 382
 383         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
 384             struct pa_memchunk schunk = chunk;
 385
 386             if (schunk.length > r->fragment_size)
 387                 schunk.length = r->fragment_size;
 388
 389             pa_pstream_send_memblock(c->pstream, r->index, 0, &schunk);
 390             pa_memblockq_drop(r->memblockq, &chunk, schunk.length);
 391             pa_memblock_unref(schunk.memblock);
 392
 393             return;
 394         }
 395     }
 396 }
 397
 398 static void send_playback_stream_killed(struct playback_stream *p) {
 399     struct pa_tagstruct *t;
 400     assert(p);
 401
 402     t = pa_tagstruct_new(NULL, 0);
 403     assert(t);
 404     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
 405     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 406     pa_tagstruct_putu32(t, p->index);
 407     pa_pstream_send_tagstruct(p->connection->pstream, t);
 408 }
 409
 410 static void send_record_stream_killed(struct record_stream *r) {
 411     struct pa_tagstruct *t;
 412     assert(r);
 413
 414     t = pa_tagstruct_new(NULL, 0);
 415     assert(t);
 416     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 417     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 418     pa_tagstruct_putu32(t, r->index);
 419     pa_pstream_send_tagstruct(r->connection->pstream, t);
 420 }
 421
 422
 423 /*** sinkinput callbacks ***/
 424
 425 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
 426     struct playback_stream *s;
 427     assert(i && i->userdata && chunk);
 428     s = i->userdata;
 429
 430     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
 431         return -1;
 432
 433     return 0;
 434 }
 435
 436 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
 437     struct playback_stream *s;
 438     assert(i && i->userdata && length);
 439     s = i->userdata;
 440
 441     pa_memblockq_drop(s->memblockq, chunk, length);
 442     request_bytes(s);
 443
 444     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
 445         pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
 446         s->drain_request = 0;
 447     }
 448
 449     /*pa_log(__FILE__": after_drop: %u\n", pa_memblockq_get_length(s->memblockq));*/
 450 }
 451
 452 static void sink_input_kill_cb(struct pa_sink_input *i) {
 453     assert(i && i->userdata);
 454     send_playback_stream_killed((struct playback_stream *) i->userdata);
 455     playback_stream_free((struct playback_stream *) i->userdata);
 456 }
 457
 458 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i) {
 459     struct playback_stream *s;
 460     assert(i && i->userdata);
 461     s = i->userdata;
 462
 463     /*pa_log(__FILE__": get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
 464
 465     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
 466 }
 467
 468 /*** source_output callbacks ***/
 469
 470 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
 471     struct record_stream *s;
 472     assert(o && o->userdata && chunk);
 473     s = o->userdata;
 474
 475     pa_memblockq_push_align(s->memblockq, chunk, 0);
 476     if (!pa_pstream_is_pending(s->connection->pstream))
 477         send_memblock(s->connection);
 478 }
 479
 480 static void source_output_kill_cb(struct pa_source_output *o) {
 481     assert(o && o->userdata);
 482     send_record_stream_killed((struct record_stream *) o->userdata);
 483     record_stream_free((struct record_stream *) o->userdata);
 484 }
 485
 486 /*** pdispatch callbacks ***/
 487
 488 static void protocol_error(struct connection *c) {
 489     pa_log(__FILE__": protocol error, kicking client\n");
 490     connection_free(c);
 491 }
 492
 493 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 494     struct connection *c = userdata;
 495     struct playback_stream *s;
 496     size_t maxlength, tlength, prebuf, minreq;
 497     uint32_t sink_index;
 498     const char *name, *sink_name;
 499     struct pa_sample_spec ss;
 500     struct pa_tagstruct *reply;
 501     struct pa_sink *sink;
 502     assert(c && t && c->protocol && c->protocol->core);
 503
 504     if (pa_tagstruct_gets(t, &name) < 0 ||
 505         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 506         pa_tagstruct_getu32(t, &sink_index) < 0 ||
 507         pa_tagstruct_gets(t, &sink_name) < 0 ||
 508         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 509         pa_tagstruct_getu32(t, &tlength) < 0 ||
 510         pa_tagstruct_getu32(t, &prebuf) < 0 ||
 511         pa_tagstruct_getu32(t, &minreq) < 0 ||
 512         !pa_tagstruct_eof(t)) {
 513         protocol_error(c);
 514         return;
 515     }
 516
 517     if (!c->authorized) {
 518         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 519         return;
 520     }
 521
 522     if (sink_index != (uint32_t) -1)
 523         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 524     else
 525         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 526
 527     if (!sink) {
 528         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 529         return;
 530     }
 531
 532     if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
 533         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 534         return;
 535     }
 536
 537     reply = pa_tagstruct_new(NULL, 0);
 538     assert(reply);
 539     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 540     pa_tagstruct_putu32(reply, tag);
 541     pa_tagstruct_putu32(reply, s->index);
 542     assert(s->sink_input);
 543     pa_tagstruct_putu32(reply, s->sink_input->index);
 544     pa_tagstruct_putu32(reply, s->requested_bytes = pa_memblockq_missing(s->memblockq));
 545     pa_pstream_send_tagstruct(c->pstream, reply);
 546     request_bytes(s);
 547 }
 548
 549 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 550     struct connection *c = userdata;
 551     uint32_t channel;
 552     assert(c && t);
 553
 554     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 555         !pa_tagstruct_eof(t)) {
 556         protocol_error(c);
 557         return;
 558     }
 559
 560     if (!c->authorized) {
 561         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 562         return;
 563     }
 564
 565     if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
 566         struct playback_stream *s;
 567         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
 568             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 569             return;
 570         }
 571
 572         playback_stream_free(s);
 573     } else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
 574         struct record_stream *s;
 575         if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
 576             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 577             return;
 578         }
 579
 580         record_stream_free(s);
 581     } else {
 582         struct upload_stream *s;
 583         assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
 584         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 585             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 586             return;
 587         }
 588
 589         upload_stream_free(s);
 590     }
 591
 592     pa_pstream_send_simple_ack(c->pstream, tag);
 593 }
 594
 595 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 596     struct connection *c = userdata;
 597     struct record_stream *s;
 598     size_t maxlength, fragment_size;
 599     uint32_t source_index;
 600     const char *name, *source_name;
 601     struct pa_sample_spec ss;
 602     struct pa_tagstruct *reply;
 603     struct pa_source *source;
 604     assert(c && t && c->protocol && c->protocol->core);
 605
 606     if (pa_tagstruct_gets(t, &name) < 0 ||
 607         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 608         pa_tagstruct_getu32(t, &source_index) < 0 ||
 609         pa_tagstruct_gets(t, &source_name) < 0 ||
 610         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 611         pa_tagstruct_getu32(t, &fragment_size) < 0 ||
 612         !pa_tagstruct_eof(t)) {
 613         protocol_error(c);
 614         return;
 615     }
 616
 617     if (!c->authorized) {
 618         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 619         return;
 620     }
 621
 622     if (source_index != (uint32_t) -1)
 623         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
 624     else
 625         source = pa_namereg_get(c->protocol->core, *source_name ? source_name : NULL, PA_NAMEREG_SOURCE, 1);
 626
 627     if (!source) {
 628         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 629         return;
 630     }
 631
 632     if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
 633         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 634         return;
 635     }
 636
 637     reply = pa_tagstruct_new(NULL, 0);
 638     assert(reply);
 639     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 640     pa_tagstruct_putu32(reply, tag);
 641     pa_tagstruct_putu32(reply, s->index);
 642     assert(s->source_output);
 643     pa_tagstruct_putu32(reply, s->source_output->index);
 644     pa_pstream_send_tagstruct(c->pstream, reply);
 645 }
 646
 647 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 648     struct connection *c = userdata;
 649     assert(c && t);
 650
 651     if (!pa_tagstruct_eof(t)) {
 652         protocol_error(c);
 653         return;
 654     }
 655
 656     if (!c->authorized) {
 657         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 658         return;
 659     }
 660
 661     assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
 662     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
 663     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 664     return;
 665 }
 666
 667 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 668     struct connection *c = userdata;
 669     const void*cookie;
 670     assert(c && t);
 671
 672     if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
 673         !pa_tagstruct_eof(t)) {
 674         protocol_error(c);
 675         return;
 676     }
 677
 678     if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
 679         pa_log(__FILE__": Denied access to client with invalid authorization key.\n");
 680         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 681         return;
 682     }
 683
 684     c->authorized = 1;
 685     pa_pstream_send_simple_ack(c->pstream, tag);
 686     return;
 687 }
 688
 689 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 690     struct connection *c = userdata;
 691     const char *name;
 692     assert(c && t);
 693
 694     if (pa_tagstruct_gets(t, &name) < 0 ||
 695         !pa_tagstruct_eof(t)) {
 696         protocol_error(c);
 697         return;
 698     }
 699
 700     pa_client_rename(c->client, name);
 701     pa_pstream_send_simple_ack(c->pstream, tag);
 702     return;
 703 }
 704
 705 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 706     struct connection *c = userdata;
 707     const char *name;
 708     uint32_t index = PA_IDXSET_INVALID;
 709     assert(c && t);
 710
 711     if (pa_tagstruct_gets(t, &name) < 0 ||
 712         !pa_tagstruct_eof(t)) {
 713         protocol_error(c);
 714         return;
 715     }
 716
 717     if (!c->authorized) {
 718         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 719         return;
 720     }
 721
 722     if (command == PA_COMMAND_LOOKUP_SINK) {
 723         struct pa_sink *sink;
 724         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
 725             index = sink->index;
 726     } else {
 727         struct pa_source *source;
 728         assert(command == PA_COMMAND_LOOKUP_SOURCE);
 729         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
 730             index = source->index;
 731     }
 732
 733     if (index == PA_IDXSET_INVALID)
 734         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 735     else {
 736         struct pa_tagstruct *reply;
 737         reply = pa_tagstruct_new(NULL, 0);
 738         assert(reply);
 739         pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 740         pa_tagstruct_putu32(reply, tag);
 741         pa_tagstruct_putu32(reply, index);
 742         pa_pstream_send_tagstruct(c->pstream, reply);
 743     }
 744 }
 745
 746 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 747     struct connection *c = userdata;
 748     uint32_t index;
 749     struct playback_stream *s;
 750     assert(c && t);
 751
 752     if (pa_tagstruct_getu32(t, &index) < 0 ||
 753         !pa_tagstruct_eof(t)) {
 754         protocol_error(c);
 755         return;
 756     }
 757
 758     if (!c->authorized) {
 759         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 760         return;
 761     }
 762
 763     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 764         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 765         return;
 766     }
 767
 768     s->drain_request = 0;
 769
 770     pa_memblockq_prebuf_disable(s->memblockq);
 771
 772     if (!pa_memblockq_is_readable(s->memblockq)) {
 773         pa_pstream_send_simple_ack(c->pstream, tag);
 774     } else {
 775         s->drain_request = 1;
 776         s->drain_tag = tag;
 777
 778         pa_sink_notify(s->sink_input->sink);
 779     }
 780 }
 781
 782 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 783     struct connection *c = userdata;
 784     struct pa_tagstruct *reply;
 785     assert(c && t);
 786
 787     if (!pa_tagstruct_eof(t)) {
 788         protocol_error(c);
 789         return;
 790     }
 791
 792     if (!c->authorized) {
 793         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 794         return;
 795     }
 796
 797     reply = pa_tagstruct_new(NULL, 0);
 798     assert(reply);
 799     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 800     pa_tagstruct_putu32(reply, tag);
 801     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
 802     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
 803     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
 804     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
 805     pa_tagstruct_putu32(reply, pa_scache_total_size(c->protocol->core));
 806     pa_pstream_send_tagstruct(c->pstream, reply);
 807 }
 808
 809 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 810     struct connection *c = userdata;
 811     struct pa_tagstruct *reply;
 812     struct playback_stream *s;
 813     struct timeval tv, now;
 814     uint32_t index;
 815     assert(c && t);
 816
 817     if (pa_tagstruct_getu32(t, &index) < 0 ||
 818         pa_tagstruct_get_timeval(t, &tv) < 0 ||
 819         !pa_tagstruct_eof(t)) {
 820         protocol_error(c);
 821         return;
 822     }
 823
 824     if (!c->authorized) {
 825         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 826         return;
 827     }
 828
 829     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 830         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 831         return;
 832     }
 833
 834     reply = pa_tagstruct_new(NULL, 0);
 835     assert(reply);
 836     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 837     pa_tagstruct_putu32(reply, tag);
 838     pa_tagstruct_put_usec(reply, pa_sink_input_get_latency(s->sink_input));
 839     pa_tagstruct_put_usec(reply, pa_sink_get_latency(s->sink_input->sink));
 840     pa_tagstruct_put_boolean(reply, pa_memblockq_is_readable(s->memblockq));
 841     pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
 842     pa_tagstruct_put_timeval(reply, &tv);
 843     gettimeofday(&now, NULL);
 844     pa_tagstruct_put_timeval(reply, &now);
 845     pa_pstream_send_tagstruct(c->pstream, reply);
 846 }
 847
 848 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 849     struct connection *c = userdata;
 850     struct upload_stream *s;
 851     size_t length;
 852     const char *name;
 853     struct pa_sample_spec ss;
 854     struct pa_tagstruct *reply;
 855     assert(c && t && c->protocol && c->protocol->core);
 856
 857     if (pa_tagstruct_gets(t, &name) < 0 ||
 858         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 859         pa_tagstruct_getu32(t, &length) < 0 ||
 860         !pa_tagstruct_eof(t)) {
 861         protocol_error(c);
 862         return;
 863     }
 864
 865     if (!c->authorized) {
 866         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 867         return;
 868     }
 869
 870     if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
 871         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 872         return;
 873     }
 874
 875     if (!(s = upload_stream_new(c, &ss, name, length))) {
 876         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 877         return;
 878     }
 879
 880     reply = pa_tagstruct_new(NULL, 0);
 881     assert(reply);
 882     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 883     pa_tagstruct_putu32(reply, tag);
 884     pa_tagstruct_putu32(reply, s->index);
 885     pa_pstream_send_tagstruct(c->pstream, reply);
 886
 887     reply = pa_tagstruct_new(NULL, 0);
 888     assert(reply);
 889     pa_tagstruct_putu32(reply, PA_COMMAND_REQUEST);
 890     pa_tagstruct_putu32(reply, (uint32_t) -1); /* tag */
 891     pa_tagstruct_putu32(reply, s->index);
 892     pa_tagstruct_putu32(reply, length);
 893     pa_pstream_send_tagstruct(c->pstream, reply);
 894 }
 895
 896 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 897     struct connection *c = userdata;
 898     uint32_t channel;
 899     struct upload_stream *s;
 900     uint32_t index;
 901     assert(c && t);
 902
 903     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 904         !pa_tagstruct_eof(t)) {
 905         protocol_error(c);
 906         return;
 907     }
 908
 909     if (!c->authorized) {
 910         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 911         return;
 912     }
 913
 914     if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 915         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 916         return;
 917     }
 918
 919     pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
 920     pa_pstream_send_simple_ack(c->pstream, tag);
 921     upload_stream_free(s);
 922 }
 923
 924 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 925     struct connection *c = userdata;
 926     uint32_t sink_index, volume;
 927     struct pa_sink *sink;
 928     const char *name, *sink_name;
 929     assert(c && t);
 930
 931     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
 932         pa_tagstruct_gets(t, &sink_name) < 0 ||
 933         pa_tagstruct_getu32(t, &volume) < 0 ||
 934         pa_tagstruct_gets(t, &name) < 0 ||
 935         !pa_tagstruct_eof(t)) {
 936         protocol_error(c);
 937         return;
 938     }
 939
 940     if (!c->authorized) {
 941         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 942         return;
 943     }
 944
 945     if (sink_index != (uint32_t) -1)
 946         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 947     else
 948         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 949
 950     if (!sink) {
 951         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 952         return;
 953     }
 954
 955     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
 956         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 957         return;
 958     }
 959
 960     pa_pstream_send_simple_ack(c->pstream, tag);
 961 }
 962
 963 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 964     struct connection *c = userdata;
 965     const char *name;
 966     assert(c && t);
 967
 968     if (pa_tagstruct_gets(t, &name) < 0 ||
 969         !pa_tagstruct_eof(t)) {
 970         protocol_error(c);
 971         return;
 972     }
 973
 974     if (!c->authorized) {
 975         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 976         return;
 977     }
 978
 979     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
 980         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 981         return;
 982     }
 983
 984     pa_pstream_send_simple_ack(c->pstream, tag);
 985 }
 986
 987 static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
 988     assert(t && sink);
 989     pa_tagstruct_putu32(t, sink->index);
 990     pa_tagstruct_puts(t, sink->name);
 991     pa_tagstruct_puts(t, sink->description ? sink->description : "");
 992     pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
 993     pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
 994     pa_tagstruct_putu32(t, sink->volume);
 995     pa_tagstruct_putu32(t, sink->monitor_source->index);
 996     pa_tagstruct_puts(t, sink->monitor_source->name);
 997     pa_tagstruct_put_usec(t, pa_sink_get_latency(sink));
 998 }
 999
1000 static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
1001     assert(t && source);
1002     pa_tagstruct_putu32(t, source->index);
1003     pa_tagstruct_puts(t, source->name);
1004     pa_tagstruct_puts(t, source->description ? source->description : "");
1005     pa_tagstruct_put_sample_spec(t, &source->sample_spec);
1006     pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
1007     pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
1008     pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : "");
1009 }
1010
1011 static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
1012     assert(t && client);
1013     pa_tagstruct_putu32(t, client->index);
1014     pa_tagstruct_puts(t, client->name);
1015     pa_tagstruct_puts(t, client->protocol_name);
1016     pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
1017 }
1018
1019 static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
1020     assert(t && module);
1021     pa_tagstruct_putu32(t, module->index);
1022     pa_tagstruct_puts(t, module->name);
1023     pa_tagstruct_puts(t, module->argument ? module->argument : "");
1024     pa_tagstruct_putu32(t, module->n_used);
1025     pa_tagstruct_put_boolean(t, module->auto_unload);
1026 }
1027
1028 static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
1029     assert(t && s);
1030     pa_tagstruct_putu32(t, s->index);
1031     pa_tagstruct_puts(t, s->name ? s->name : "");
1032     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1033     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1034     pa_tagstruct_putu32(t, s->sink->index);
1035     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1036     pa_tagstruct_putu32(t, s->volume);
1037     pa_tagstruct_put_usec(t, pa_sink_input_get_latency(s));
1038     pa_tagstruct_put_usec(t, pa_sink_get_latency(s->sink));
1039 }
1040
1041 static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
1042     assert(t && s);
1043     pa_tagstruct_putu32(t, s->index);
1044     pa_tagstruct_puts(t, s->name ? s->name : "");
1045     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1046     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1047     pa_tagstruct_putu32(t, s->source->index);
1048     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1049 }
1050
1051 static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
1052     assert(t && e);
1053     pa_tagstruct_putu32(t, e->index);
1054     pa_tagstruct_puts(t, e->name);
1055     pa_tagstruct_putu32(t, e->volume);
1056     pa_tagstruct_put_usec(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
1057     pa_tagstruct_put_sample_spec(t, &e->sample_spec);
1058     pa_tagstruct_putu32(t, e->memchunk.length);
1059 }
1060
1061 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1062     struct connection *c = userdata;
1063     uint32_t index;
1064     struct pa_sink *sink = NULL;
1065     struct pa_source *source = NULL;
1066     struct pa_client *client = NULL;
1067     struct pa_module *module = NULL;
1068     struct pa_sink_input *si = NULL;
1069     struct pa_source_output *so = NULL;
1070     struct pa_scache_entry *sce = NULL;
1071     const char *name;
1072     struct pa_tagstruct *reply;
1073     assert(c && t);
1074
1075
1076     if (pa_tagstruct_getu32(t, &index) < 0 ||
1077         (command != PA_COMMAND_GET_CLIENT_INFO &&
1078          command != PA_COMMAND_GET_MODULE_INFO &&
1079          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
1080          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
1081          pa_tagstruct_gets(t, &name) < 0) ||
1082         !pa_tagstruct_eof(t)) {
1083         protocol_error(c);
1084         return;
1085     }
1086
1087     if (!c->authorized) {
1088         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1089         return;
1090     }
1091
1092     if (command == PA_COMMAND_GET_SINK_INFO) {
1093         if (index != (uint32_t) -1)
1094             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1095         else
1096             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1097     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
1098         if (index != (uint32_t) -1)
1099             source = pa_idxset_get_by_index(c->protocol->core->sources, index);
1100         else
1101             source = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SOURCE, 1);
1102     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
1103         client = pa_idxset_get_by_index(c->protocol->core->clients, index);
1104     else if (command == PA_COMMAND_GET_MODULE_INFO)
1105         module = pa_idxset_get_by_index(c->protocol->core->modules, index);
1106     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
1107         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1108     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
1109         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
1110     else {
1111         assert(command == PA_COMMAND_GET_SAMPLE_INFO && name);
1112         if (index != (uint32_t) -1)
1113             sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
1114         else
1115             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
1116     }
1117
1118     if (!sink && !source && !client && !module && !si && !so && !sce) {
1119         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1120         return;
1121     }
1122
1123     reply = pa_tagstruct_new(NULL, 0);
1124     assert(reply);
1125     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1126     pa_tagstruct_putu32(reply, tag);
1127     if (sink)
1128         sink_fill_tagstruct(reply, sink);
1129     else if (source)
1130         source_fill_tagstruct(reply, source);
1131     else if (client)
1132         client_fill_tagstruct(reply, client);
1133     else if (module)
1134         module_fill_tagstruct(reply, module);
1135     else if (si)
1136         sink_input_fill_tagstruct(reply, si);
1137     else if (so)
1138         source_output_fill_tagstruct(reply, so);
1139     else
1140         scache_fill_tagstruct(reply, sce);
1141     pa_pstream_send_tagstruct(c->pstream, reply);
1142 }
1143
1144 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1145     struct connection *c = userdata;
1146     struct pa_idxset *i;
1147     uint32_t index;
1148     void *p;
1149     struct pa_tagstruct *reply;
1150     assert(c && t);
1151
1152     if (!pa_tagstruct_eof(t)) {
1153         protocol_error(c);
1154         return;
1155     }
1156
1157     if (!c->authorized) {
1158         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1159         return;
1160     }
1161
1162     reply = pa_tagstruct_new(NULL, 0);
1163     assert(reply);
1164     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1165     pa_tagstruct_putu32(reply, tag);
1166
1167     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1168         i = c->protocol->core->sinks;
1169     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1170         i = c->protocol->core->sources;
1171     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1172         i = c->protocol->core->clients;
1173     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1174         i = c->protocol->core->modules;
1175     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1176         i = c->protocol->core->sink_inputs;
1177     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1178         i = c->protocol->core->source_outputs;
1179     else {
1180         assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1181         i = c->protocol->core->scache;
1182     }
1183
1184     if (i) {
1185         for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
1186             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1187                 sink_fill_tagstruct(reply, p);
1188             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1189                 source_fill_tagstruct(reply, p);
1190             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1191                 client_fill_tagstruct(reply, p);
1192             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1193                 module_fill_tagstruct(reply, p);
1194             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1195                 sink_input_fill_tagstruct(reply, p);
1196             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1197                 source_output_fill_tagstruct(reply, p);
1198             else {
1199                 assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1200                 scache_fill_tagstruct(reply, p);
1201             }
1202         }
1203     }
1204
1205     pa_pstream_send_tagstruct(c->pstream, reply);
1206 }
1207
1208 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1209     struct connection *c = userdata;
1210     struct pa_tagstruct *reply;
1211     char txt[256];
1212     const char *n;
1213     assert(c && t);
1214
1215     if (!pa_tagstruct_eof(t)) {
1216         protocol_error(c);
1217         return;
1218     }
1219
1220     if (!c->authorized) {
1221         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1222         return;
1223     }
1224
1225     reply = pa_tagstruct_new(NULL, 0);
1226     assert(reply);
1227     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1228     pa_tagstruct_putu32(reply, tag);
1229     pa_tagstruct_puts(reply, PACKAGE_NAME);
1230     pa_tagstruct_puts(reply, PACKAGE_VERSION);
1231     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
1232     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
1233     pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
1234
1235     n = pa_namereg_get_default_sink_name(c->protocol->core);
1236     pa_tagstruct_puts(reply, n ? n : "");
1237     n = pa_namereg_get_default_source_name(c->protocol->core);
1238     pa_tagstruct_puts(reply, n ? n : "");
1239     pa_pstream_send_tagstruct(c->pstream, reply);
1240 }
1241
1242 static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
1243     struct pa_tagstruct *t;
1244     struct connection *c = userdata;
1245     assert(c && core);
1246
1247     t = pa_tagstruct_new(NULL, 0);
1248     assert(t);
1249     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
1250     pa_tagstruct_putu32(t, (uint32_t) -1);
1251     pa_tagstruct_putu32(t, e);
1252     pa_tagstruct_putu32(t, index);
1253     pa_pstream_send_tagstruct(c->pstream, t);
1254 }
1255
1256 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1257     struct connection *c = userdata;
1258     enum pa_subscription_mask m;
1259     assert(c && t);
1260
1261     if (pa_tagstruct_getu32(t, &m) < 0 ||
1262         !pa_tagstruct_eof(t)) {
1263         protocol_error(c);
1264         return;
1265     }
1266
1267     if (!c->authorized) {
1268         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1269         return;
1270     }
1271
1272     if (c->subscription)
1273         pa_subscription_free(c->subscription);
1274
1275     if (m != 0) {
1276         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
1277         assert(c->subscription);
1278     } else
1279         c->subscription = NULL;
1280
1281     pa_pstream_send_simple_ack(c->pstream, tag);
1282 }
1283
1284 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1285     struct connection *c = userdata;
1286     uint32_t index, volume;
1287     struct pa_sink *sink = NULL;
1288     struct pa_sink_input *si = NULL;
1289     const char *name = NULL;
1290     assert(c && t);
1291
1292     if (pa_tagstruct_getu32(t, &index) < 0 ||
1293         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
1294         pa_tagstruct_getu32(t, &volume) ||
1295         !pa_tagstruct_eof(t)) {
1296         protocol_error(c);
1297         return;
1298     }
1299
1300     if (!c->authorized) {
1301         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1302         return;
1303     }
1304
1305     if (command == PA_COMMAND_SET_SINK_VOLUME) {
1306         if (index != (uint32_t) -1)
1307             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1308         else
1309             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1310     }  else {
1311         assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
1312         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1313     }
1314
1315     if (!si && !sink) {
1316         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1317         return;
1318     }
1319
1320     if (sink)
1321         pa_sink_set_volume(sink, volume);
1322     else if (si)
1323         pa_sink_input_set_volume(si, volume);
1324
1325     pa_pstream_send_simple_ack(c->pstream, tag);
1326 }
1327
1328 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1329     struct connection *c = userdata;
1330     uint32_t index;
1331     uint32_t b;
1332     struct playback_stream *s;
1333     assert(c && t);
1334
1335     if (pa_tagstruct_getu32(t, &index) < 0 ||
1336         pa_tagstruct_getu32(t, &b) < 0 ||
1337         !pa_tagstruct_eof(t)) {
1338         protocol_error(c);
1339         return;
1340     }
1341
1342     if (!c->authorized) {
1343         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1344         return;
1345     }
1346
1347     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1348         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1349         return;
1350     }
1351
1352     pa_sink_input_cork(s->sink_input, b);
1353     pa_pstream_send_simple_ack(c->pstream, tag);
1354 }
1355
1356 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1357     struct connection *c = userdata;
1358     uint32_t index;
1359     struct playback_stream *s;
1360     assert(c && t);
1361
1362     if (pa_tagstruct_getu32(t, &index) < 0 ||
1363         !pa_tagstruct_eof(t)) {
1364         protocol_error(c);
1365         return;
1366     }
1367
1368     if (!c->authorized) {
1369         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1370         return;
1371     }
1372
1373     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1374         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1375         return;
1376     }
1377
1378     if (command == PA_COMMAND_TRIGGER_PLAYBACK_STREAM)
1379         pa_memblockq_prebuf_disable(s->memblockq);
1380     else {
1381         assert(command == PA_COMMAND_FLUSH_PLAYBACK_STREAM);
1382         pa_memblockq_flush(s->memblockq);
1383         /*pa_log(__FILE__": flush: %u\n", pa_memblockq_get_length(s->memblockq));*/
1384     }
1385
1386     pa_sink_notify(s->sink_input->sink);
1387     pa_pstream_send_simple_ack(c->pstream, tag);
1388     request_bytes(s);
1389 }
1390
1391 static void command_set_default_sink_or_source(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1392     struct connection *c = userdata;
1393     uint32_t index;
1394     const char *s;
1395     assert(c && t);
1396
1397     if (pa_tagstruct_getu32(t, &index) < 0 ||
1398         pa_tagstruct_gets(t, &s) < 0 ||
1399         !pa_tagstruct_eof(t)) {
1400         protocol_error(c);
1401         return;
1402     }
1403
1404     if (!c->authorized) {
1405         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1406         return;
1407     }
1408
1409     pa_namereg_set_default(c->protocol->core, s, command == PA_COMMAND_SET_DEFAULT_SOURCE ? PA_NAMEREG_SOURCE : PA_NAMEREG_SINK);
1410     pa_pstream_send_simple_ack(c->pstream, tag);
1411 }
1412
1413 /*** pstream callbacks ***/
1414
1415 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
1416     struct connection *c = userdata;
1417     assert(p && packet && packet->data && c);
1418
1419     if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
1420         pa_log(__FILE__": invalid packet.\n");
1421         connection_free(c);
1422     }
1423 }
1424
1425 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
1426     struct connection *c = userdata;
1427     struct output_stream *stream;
1428     assert(p && chunk && userdata);
1429
1430     if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
1431         pa_log(__FILE__": client sent block for invalid stream.\n");
1432         connection_free(c);
1433         return;
1434     }
1435
1436     if (stream->type == PLAYBACK_STREAM) {
1437         struct playback_stream *p = (struct playback_stream*) stream;
1438         if (chunk->length >= p->requested_bytes)
1439             p->requested_bytes = 0;
1440         else
1441             p->requested_bytes -= chunk->length;
1442
1443         pa_memblockq_push_align(p->memblockq, chunk, delta);
1444         assert(p->sink_input);
1445         /*pa_log(__FILE__": after_recv: %u\n", pa_memblockq_get_length(p->memblockq));*/
1446
1447         pa_sink_notify(p->sink_input->sink);
1448 /*         pa_log(__FILE__": Recieved %u bytes.\n", chunk->length); */
1449
1450     } else {
1451         struct upload_stream *u = (struct upload_stream*) stream;
1452         size_t l;
1453         assert(u->type == UPLOAD_STREAM);
1454
1455         if (!u->memchunk.memblock) {
1456             if (u->length == chunk->length) {
1457                 u->memchunk = *chunk;
1458                 pa_memblock_ref(u->memchunk.memblock);
1459                 u->length = 0;
1460             } else {
1461                 u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
1462                 u->memchunk.index = u->memchunk.length = 0;
1463             }
1464         }
1465
1466         assert(u->memchunk.memblock);
1467
1468         l = u->length;
1469         if (l > chunk->length)
1470             l = chunk->length;
1471
1472         if (l > 0) {
1473             memcpy((uint8_t*) u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length,
1474                    (uint8_t*) chunk->memblock->data+chunk->index, l);
1475             u->memchunk.length += l;
1476             u->length -= l;
1477         }
1478     }
1479 }
1480
1481 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
1482     struct connection *c = userdata;
1483     assert(p && c);
1484     connection_free(c);
1485
1486 /*    pa_log(__FILE__": connection died.\n");*/
1487 }
1488
1489
1490 static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
1491     struct connection *c = userdata;
1492     assert(p && c);
1493
1494     send_memblock(c);
1495 }
1496
1497 /*** client callbacks ***/
1498
1499 static void client_kill_cb(struct pa_client *c) {
1500     assert(c && c->userdata);
1501     connection_free(c->userdata);
1502 }
1503
1504 /*** socket server callbacks ***/
1505
1506 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1507     struct pa_protocol_native *p = userdata;
1508     struct connection *c;
1509     assert(io && p);
1510
1511     c = pa_xmalloc(sizeof(struct connection));
1512     c->authorized = p->public;
1513     c->protocol = p;
1514     assert(p->core);
1515     c->client = pa_client_new(p->core, "NATIVE", "Client");
1516     assert(c->client);
1517     c->client->kill = client_kill_cb;
1518     c->client->userdata = c;
1519     c->client->owner = p->module;
1520
1521     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
1522     assert(c->pstream);
1523
1524     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
1525     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
1526     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
1527     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
1528
1529     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
1530     assert(c->pdispatch);
1531
1532     c->record_streams = pa_idxset_new(NULL, NULL);
1533     c->output_streams = pa_idxset_new(NULL, NULL);
1534     assert(c->record_streams && c->output_streams);
1535
1536     c->rrobin_index = PA_IDXSET_INVALID;
1537     c->subscription = NULL;
1538
1539     pa_idxset_put(p->connections, c, NULL);
1540 }
1541
1542 /*** module entry points ***/
1543
1544 static struct pa_protocol_native* protocol_new_internal(struct pa_core *c, struct pa_module *m, struct pa_modargs *ma) {
1545     struct pa_protocol_native *p;
1546     int public;
1547     assert(c && ma);
1548
1549     if (pa_modargs_get_value_boolean(ma, "public", &public) < 0) {
1550         pa_log(__FILE__": public= expects numeric argument.\n");
1551         return NULL;
1552     }
1553
1554     p = pa_xmalloc(sizeof(struct pa_protocol_native));
1555
1556     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
1557         pa_xfree(p);
1558         return NULL;
1559     }
1560
1561     p->module = m;
1562     p->public = public;
1563     p->server = NULL;
1564     p->core = c;
1565     p->connections = pa_idxset_new(NULL, NULL);
1566     assert(p->connections);
1567
1568     return p;
1569 }
1570
1571 struct pa_protocol_native* pa_protocol_native_new(struct pa_core *core, struct pa_socket_server *server, struct pa_module *m, struct pa_modargs *ma) {
1572     struct pa_protocol_native *p;
1573
1574     if (!(p = protocol_new_internal(core, m, ma)))
1575         return NULL;
1576
1577     p->server = server;
1578     pa_socket_server_set_callback(p->server, on_connection, p);
1579
1580     return p;
1581 }
1582
1583 void pa_protocol_native_free(struct pa_protocol_native *p) {
1584     struct connection *c;
1585     assert(p);
1586
1587     while ((c = pa_idxset_first(p->connections, NULL)))
1588         connection_free(c);
1589     pa_idxset_free(p->connections, NULL, NULL);
1590
1591     if (p->server)
1592         pa_socket_server_unref(p->server);
1593
1594     pa_xfree(p);
1595 }
1596
1597 struct pa_protocol_native* pa_protocol_native_new_iochannel(struct pa_core*core, struct pa_iochannel *io, struct pa_module *m, struct pa_modargs *ma) {
1598     struct pa_protocol_native *p;
1599
1600     if (!(p = protocol_new_internal(core, m, ma)))
1601         return NULL;
1602
1603     on_connection(NULL, io, p);
1604
1605     return p;
1606 }