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
  48 struct connection;
  49 struct pa_protocol_native;
  50
  51 struct record_stream {
  52     struct connection *connection;
  53     uint32_t index;
  54     struct pa_source_output *source_output;
  55     struct pa_memblockq *memblockq;
  56     size_t fragment_size;
  57 };
  58
  59 struct playback_stream {
  60     int type;
  61     struct connection *connection;
  62     uint32_t index;
  63     struct pa_sink_input *sink_input;
  64     struct pa_memblockq *memblockq;
  65     size_t requested_bytes;
  66     int drain_request;
  67     uint32_t drain_tag;
  68 };
  69
  70 struct upload_stream {
  71     int type;
  72     struct connection *connection;
  73     uint32_t index;
  74     struct pa_memchunk memchunk;
  75     size_t length;
  76     char *name;
  77     struct pa_sample_spec sample_spec;
  78 };
  79
  80 struct output_stream {
  81     int type;
  82 };
  83
  84 enum {
  85     UPLOAD_STREAM,
  86     PLAYBACK_STREAM
  87 };
  88
  89 struct connection {
  90     int authorized;
  91     struct pa_protocol_native *protocol;
  92     struct pa_client *client;
  93     struct pa_pstream *pstream;
  94     struct pa_pdispatch *pdispatch;
  95     struct pa_idxset *record_streams, *output_streams;
  96     uint32_t rrobin_index;
  97     struct pa_subscription *subscription;
  98 };
  99
 100 struct pa_protocol_native {
 101     struct pa_module *module;
 102     int public;
 103     struct pa_core *core;
 104     struct pa_socket_server *server;
 105     struct pa_idxset *connections;
 106     uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
 107 };
 108
 109 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
 110 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
 111 static void sink_input_kill_cb(struct pa_sink_input *i);
 112 static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i);
 113
 114 static void request_bytes(struct playback_stream*s);
 115
 116 static void source_output_kill_cb(struct pa_source_output *o);
 117 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
 118
 119 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 120 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 121 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 122 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 123 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 124 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 125 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 126 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 127 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 128 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 129 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 130 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 131 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 132 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 133 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 134 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 135 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 136 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 137 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 138 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 139 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 140
 141 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
 142     [PA_COMMAND_ERROR] = { NULL },
 143     [PA_COMMAND_TIMEOUT] = { NULL },
 144     [PA_COMMAND_REPLY] = { NULL },
 145     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
 146     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_stream },
 147     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
 148     [PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
 149     [PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_stream },
 150     [PA_COMMAND_AUTH] = { command_auth },
 151     [PA_COMMAND_REQUEST] = { NULL },
 152     [PA_COMMAND_EXIT] = { command_exit },
 153     [PA_COMMAND_SET_NAME] = { command_set_name },
 154     [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
 155     [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
 156     [PA_COMMAND_STAT] = { command_stat },
 157     [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
 158     [PA_COMMAND_CREATE_UPLOAD_STREAM] = { command_create_upload_stream },
 159     [PA_COMMAND_DELETE_UPLOAD_STREAM] = { command_delete_stream },
 160     [PA_COMMAND_FINISH_UPLOAD_STREAM] = { command_finish_upload_stream },
 161     [PA_COMMAND_PLAY_SAMPLE] = { command_play_sample },
 162     [PA_COMMAND_REMOVE_SAMPLE] = { command_remove_sample },
 163     [PA_COMMAND_GET_SINK_INFO] = { command_get_info },
 164     [PA_COMMAND_GET_SOURCE_INFO] = { command_get_info },
 165     [PA_COMMAND_GET_CLIENT_INFO] = { command_get_info },
 166     [PA_COMMAND_GET_MODULE_INFO] = { command_get_info },
 167     [PA_COMMAND_GET_SINK_INPUT_INFO] = { command_get_info },
 168     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = { command_get_info },
 169     [PA_COMMAND_GET_SAMPLE_INFO] = { command_get_info },
 170     [PA_COMMAND_GET_SINK_INFO_LIST] = { command_get_info_list },
 171     [PA_COMMAND_GET_SOURCE_INFO_LIST] = { command_get_info_list },
 172     [PA_COMMAND_GET_MODULE_INFO_LIST] = { command_get_info_list },
 173     [PA_COMMAND_GET_CLIENT_INFO_LIST] = { command_get_info_list },
 174     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = { command_get_info_list },
 175     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = { command_get_info_list },
 176     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = { command_get_info_list },
 177     [PA_COMMAND_GET_SERVER_INFO] = { command_get_server_info },
 178     [PA_COMMAND_SUBSCRIBE] = { command_subscribe },
 179     [PA_COMMAND_SET_SINK_VOLUME] = { command_set_volume },
 180     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = { command_set_volume },
 181     [PA_COMMAND_CORK_PLAYBACK_STREAM] = { command_cork_playback_stream },
 182     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 183     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 184 };
 185
 186 /* structure management */
 187
 188 static struct upload_stream* upload_stream_new(struct connection *c, const struct pa_sample_spec *ss, const char *name, size_t length) {
 189     struct upload_stream *s;
 190     assert(c && ss && name && length);
 191
 192     s = pa_xmalloc(sizeof(struct upload_stream));
 193     s->type = UPLOAD_STREAM;
 194     s->connection = c;
 195     s->sample_spec = *ss;
 196     s->name = pa_xstrdup(name);
 197
 198     s->memchunk.memblock = NULL;
 199     s->memchunk.index = 0;
 200     s->memchunk.length = 0;
 201
 202     s->length = length;
 203
 204     pa_idxset_put(c->output_streams, s, &s->index);
 205     return s;
 206 }
 207
 208 static void upload_stream_free(struct upload_stream *o) {
 209     assert(o && o->connection);
 210
 211     pa_idxset_remove_by_data(o->connection->output_streams, o, NULL);
 212
 213     pa_xfree(o->name);
 214
 215     if (o->memchunk.memblock)
 216         pa_memblock_unref(o->memchunk.memblock);
 217
 218     pa_xfree(o);
 219 }
 220
 221 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) {
 222     struct record_stream *s;
 223     struct pa_source_output *source_output;
 224     size_t base;
 225     assert(c && source && ss && name && maxlength);
 226
 227     if (!(source_output = pa_source_output_new(source, name, ss)))
 228         return NULL;
 229
 230     s = pa_xmalloc(sizeof(struct record_stream));
 231     s->connection = c;
 232     s->source_output = source_output;
 233     s->source_output->push = source_output_push_cb;
 234     s->source_output->kill = source_output_kill_cb;
 235     s->source_output->userdata = s;
 236     s->source_output->owner = c->protocol->module;
 237     s->source_output->client = c->client;
 238
 239     s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_frame_size(ss), 0, 0, c->protocol->core->memblock_stat);
 240     assert(s->memblockq);
 241
 242     s->fragment_size = (fragment_size/base)*base;
 243     if (!s->fragment_size)
 244         s->fragment_size = base;
 245
 246     pa_idxset_put(c->record_streams, s, &s->index);
 247     return s;
 248 }
 249
 250 static void record_stream_free(struct record_stream* r) {
 251     assert(r && r->connection);
 252
 253     pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
 254     pa_source_output_free(r->source_output);
 255     pa_memblockq_free(r->memblockq);
 256     pa_xfree(r);
 257 }
 258
 259 static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, const struct pa_sample_spec *ss, const char *name,
 260                                                    size_t maxlength,
 261                                                    size_t tlength,
 262                                                    size_t prebuf,
 263                                                    size_t minreq) {
 264     struct playback_stream *s;
 265     struct pa_sink_input *sink_input;
 266     assert(c && sink && ss && name && maxlength);
 267
 268     if (!(sink_input = pa_sink_input_new(sink, name, ss)))
 269         return NULL;
 270
 271     s = pa_xmalloc(sizeof(struct playback_stream));
 272     s->type = PLAYBACK_STREAM;
 273     s->connection = c;
 274     s->sink_input = sink_input;
 275
 276     s->sink_input->peek = sink_input_peek_cb;
 277     s->sink_input->drop = sink_input_drop_cb;
 278     s->sink_input->kill = sink_input_kill_cb;
 279     s->sink_input->get_latency = sink_input_get_latency_cb;
 280     s->sink_input->userdata = s;
 281     s->sink_input->owner = c->protocol->module;
 282     s->sink_input->client = c->client;
 283
 284     s->memblockq = pa_memblockq_new(maxlength, tlength, pa_frame_size(ss), prebuf, minreq, c->protocol->core->memblock_stat);
 285     assert(s->memblockq);
 286
 287     s->requested_bytes = 0;
 288     s->drain_request = 0;
 289
 290     pa_idxset_put(c->output_streams, s, &s->index);
 291     return s;
 292 }
 293
 294 static void playback_stream_free(struct playback_stream* p) {
 295     assert(p && p->connection);
 296
 297     if (p->drain_request)
 298         pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
 299
 300     pa_idxset_remove_by_data(p->connection->output_streams, p, NULL);
 301     pa_sink_input_free(p->sink_input);
 302     pa_memblockq_free(p->memblockq);
 303     pa_xfree(p);
 304 }
 305
 306 static void connection_free(struct connection *c) {
 307     struct record_stream *r;
 308     struct output_stream *o;
 309     assert(c && c->protocol);
 310
 311     pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
 312     while ((r = pa_idxset_first(c->record_streams, NULL)))
 313         record_stream_free(r);
 314     pa_idxset_free(c->record_streams, NULL, NULL);
 315
 316     while ((o = pa_idxset_first(c->output_streams, NULL)))
 317         if (o->type == PLAYBACK_STREAM)
 318             playback_stream_free((struct playback_stream*) o);
 319         else
 320             upload_stream_free((struct upload_stream*) o);
 321     pa_idxset_free(c->output_streams, NULL, NULL);
 322
 323     pa_pdispatch_unref(c->pdispatch);
 324     pa_pstream_close(c->pstream);
 325     pa_pstream_unref(c->pstream);
 326     pa_client_free(c->client);
 327
 328     if (c->subscription)
 329         pa_subscription_free(c->subscription);
 330
 331     pa_xfree(c);
 332 }
 333
 334 static void request_bytes(struct playback_stream *s) {
 335     struct pa_tagstruct *t;
 336     size_t l;
 337     assert(s);
 338
 339     if (!(l = pa_memblockq_missing(s->memblockq)))
 340         return;
 341
 342     if (l <= s->requested_bytes)
 343         return;
 344
 345     l -= s->requested_bytes;
 346
 347     if (l < pa_memblockq_get_minreq(s->memblockq))
 348         return;
 349
 350     s->requested_bytes += l;
 351
 352     t = pa_tagstruct_new(NULL, 0);
 353     assert(t);
 354     pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 355     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 356     pa_tagstruct_putu32(t, s->index);
 357     pa_tagstruct_putu32(t, l);
 358     pa_pstream_send_tagstruct(s->connection->pstream, t);
 359
 360     /*fprintf(stderr, "Requesting %u bytes\n", l);*/
 361 }
 362
 363 static void send_memblock(struct connection *c) {
 364     uint32_t start;
 365     struct record_stream *r;
 366
 367     start = PA_IDXSET_INVALID;
 368     for (;;) {
 369         struct pa_memchunk chunk;
 370
 371         if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
 372             return;
 373
 374         if (start == PA_IDXSET_INVALID)
 375             start = c->rrobin_index;
 376         else if (start == c->rrobin_index)
 377             return;
 378
 379         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
 380             if (chunk.length > r->fragment_size)
 381                 chunk.length = r->fragment_size;
 382
 383             pa_pstream_send_memblock(c->pstream, r->index, 0, &chunk);
 384             pa_memblockq_drop(r->memblockq, &chunk, chunk.length);
 385             pa_memblock_unref(chunk.memblock);
 386
 387             return;
 388         }
 389     }
 390 }
 391
 392 static void send_playback_stream_killed(struct playback_stream *p) {
 393     struct pa_tagstruct *t;
 394     assert(p);
 395
 396     t = pa_tagstruct_new(NULL, 0);
 397     assert(t);
 398     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
 399     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 400     pa_tagstruct_putu32(t, p->index);
 401     pa_pstream_send_tagstruct(p->connection->pstream, t);
 402 }
 403
 404 static void send_record_stream_killed(struct record_stream *r) {
 405     struct pa_tagstruct *t;
 406     assert(r);
 407
 408     t = pa_tagstruct_new(NULL, 0);
 409     assert(t);
 410     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 411     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 412     pa_tagstruct_putu32(t, r->index);
 413     pa_pstream_send_tagstruct(r->connection->pstream, t);
 414 }
 415
 416
 417 /*** sinkinput callbacks ***/
 418
 419 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
 420     struct playback_stream *s;
 421     assert(i && i->userdata && chunk);
 422     s = i->userdata;
 423
 424     /*fprintf(stderr, "%3.0f      \r", (double) pa_memblockq_get_length(s->memblockq)/pa_memblockq_get_tlength(s->memblockq)*100);*/
 425
 426     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
 427         return -1;
 428
 429     return 0;
 430 }
 431
 432 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
 433     struct playback_stream *s;
 434     assert(i && i->userdata && length);
 435     s = i->userdata;
 436
 437     pa_memblockq_drop(s->memblockq, chunk, length);
 438     request_bytes(s);
 439
 440     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
 441         pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
 442         s->drain_request = 0;
 443     }
 444
 445     /*fprintf(stderr, "after_drop: %u\n", pa_memblockq_get_length(s->memblockq));*/
 446 }
 447
 448 static void sink_input_kill_cb(struct pa_sink_input *i) {
 449     assert(i && i->userdata);
 450     send_playback_stream_killed((struct playback_stream *) i->userdata);
 451     playback_stream_free((struct playback_stream *) i->userdata);
 452 }
 453
 454 static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i) {
 455     struct playback_stream *s;
 456     assert(i && i->userdata);
 457     s = i->userdata;
 458
 459     /*fprintf(stderr, "get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
 460
 461     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
 462 }
 463
 464 /*** source_output callbacks ***/
 465
 466 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
 467     struct record_stream *s;
 468     assert(o && o->userdata && chunk);
 469     s = o->userdata;
 470
 471     pa_memblockq_push(s->memblockq, chunk, 0);
 472     if (!pa_pstream_is_pending(s->connection->pstream))
 473         send_memblock(s->connection);
 474 }
 475
 476 static void source_output_kill_cb(struct pa_source_output *o) {
 477     assert(o && o->userdata);
 478     send_record_stream_killed((struct record_stream *) o->userdata);
 479     record_stream_free((struct record_stream *) o->userdata);
 480 }
 481
 482 /*** pdispatch callbacks ***/
 483
 484 static void protocol_error(struct connection *c) {
 485     fprintf(stderr, __FILE__": protocol error, kicking client\n");
 486     connection_free(c);
 487 }
 488
 489 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 490     struct connection *c = userdata;
 491     struct playback_stream *s;
 492     size_t maxlength, tlength, prebuf, minreq;
 493     uint32_t sink_index;
 494     const char *name, *sink_name;
 495     struct pa_sample_spec ss;
 496     struct pa_tagstruct *reply;
 497     struct pa_sink *sink;
 498     assert(c && t && c->protocol && c->protocol->core);
 499
 500     if (pa_tagstruct_gets(t, &name) < 0 ||
 501         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 502         pa_tagstruct_getu32(t, &sink_index) < 0 ||
 503         pa_tagstruct_gets(t, &sink_name) < 0 ||
 504         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 505         pa_tagstruct_getu32(t, &tlength) < 0 ||
 506         pa_tagstruct_getu32(t, &prebuf) < 0 ||
 507         pa_tagstruct_getu32(t, &minreq) < 0 ||
 508         !pa_tagstruct_eof(t)) {
 509         protocol_error(c);
 510         return;
 511     }
 512
 513     if (!c->authorized) {
 514         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 515         return;
 516     }
 517
 518     if (sink_index != (uint32_t) -1)
 519         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 520     else
 521         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 522
 523     if (!sink) {
 524         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 525         return;
 526     }
 527
 528     if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
 529         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 530         return;
 531     }
 532
 533     reply = pa_tagstruct_new(NULL, 0);
 534     assert(reply);
 535     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 536     pa_tagstruct_putu32(reply, tag);
 537     pa_tagstruct_putu32(reply, s->index);
 538     assert(s->sink_input);
 539     pa_tagstruct_putu32(reply, s->sink_input->index);
 540     pa_pstream_send_tagstruct(c->pstream, reply);
 541     request_bytes(s);
 542 }
 543
 544 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 545     struct connection *c = userdata;
 546     uint32_t channel;
 547     assert(c && t);
 548
 549     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 550         !pa_tagstruct_eof(t)) {
 551         protocol_error(c);
 552         return;
 553     }
 554
 555     if (!c->authorized) {
 556         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 557         return;
 558     }
 559
 560     if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
 561         struct playback_stream *s;
 562         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
 563             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 564             return;
 565         }
 566
 567         playback_stream_free(s);
 568     } else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
 569         struct record_stream *s;
 570         if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
 571             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 572             return;
 573         }
 574
 575         record_stream_free(s);
 576     } else {
 577         struct upload_stream *s;
 578         assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
 579         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 580             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 581             return;
 582         }
 583
 584         upload_stream_free(s);
 585     }
 586
 587     pa_pstream_send_simple_ack(c->pstream, tag);
 588 }
 589
 590 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 591     struct connection *c = userdata;
 592     struct record_stream *s;
 593     size_t maxlength, fragment_size;
 594     uint32_t source_index;
 595     const char *name, *source_name;
 596     struct pa_sample_spec ss;
 597     struct pa_tagstruct *reply;
 598     struct pa_source *source;
 599     assert(c && t && c->protocol && c->protocol->core);
 600
 601     if (pa_tagstruct_gets(t, &name) < 0 ||
 602         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 603         pa_tagstruct_getu32(t, &source_index) < 0 ||
 604         pa_tagstruct_gets(t, &source_name) < 0 ||
 605         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 606         pa_tagstruct_getu32(t, &fragment_size) < 0 ||
 607         !pa_tagstruct_eof(t)) {
 608         protocol_error(c);
 609         return;
 610     }
 611
 612     if (!c->authorized) {
 613         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 614         return;
 615     }
 616
 617     if (source_index != (uint32_t) -1)
 618         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
 619     else
 620         source = pa_namereg_get(c->protocol->core, *source_name ? source_name : NULL, PA_NAMEREG_SOURCE, 1);
 621
 622     if (!source) {
 623         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 624         return;
 625     }
 626
 627     if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
 628         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 629         return;
 630     }
 631
 632     reply = pa_tagstruct_new(NULL, 0);
 633     assert(reply);
 634     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 635     pa_tagstruct_putu32(reply, tag);
 636     pa_tagstruct_putu32(reply, s->index);
 637     assert(s->source_output);
 638     pa_tagstruct_putu32(reply, s->source_output->index);
 639     pa_pstream_send_tagstruct(c->pstream, reply);
 640 }
 641
 642 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 643     struct connection *c = userdata;
 644     assert(c && t);
 645
 646     if (!pa_tagstruct_eof(t)) {
 647         protocol_error(c);
 648         return;
 649     }
 650
 651     if (!c->authorized) {
 652         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 653         return;
 654     }
 655
 656     assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
 657     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
 658     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 659     return;
 660 }
 661
 662 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 663     struct connection *c = userdata;
 664     const void*cookie;
 665     assert(c && t);
 666
 667     if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
 668         !pa_tagstruct_eof(t)) {
 669         protocol_error(c);
 670         return;
 671     }
 672
 673     if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
 674         fprintf(stderr, "protocol-native.c: Denied access to client with invalid authorization key.\n");
 675         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 676         return;
 677     }
 678
 679     c->authorized = 1;
 680     pa_pstream_send_simple_ack(c->pstream, tag);
 681     return;
 682 }
 683
 684 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 685     struct connection *c = userdata;
 686     const char *name;
 687     assert(c && t);
 688
 689     if (pa_tagstruct_gets(t, &name) < 0 ||
 690         !pa_tagstruct_eof(t)) {
 691         protocol_error(c);
 692         return;
 693     }
 694
 695     pa_client_rename(c->client, name);
 696     pa_pstream_send_simple_ack(c->pstream, tag);
 697     return;
 698 }
 699
 700 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 701     struct connection *c = userdata;
 702     const char *name;
 703     uint32_t index = PA_IDXSET_INVALID;
 704     assert(c && t);
 705
 706     if (pa_tagstruct_gets(t, &name) < 0 ||
 707         !pa_tagstruct_eof(t)) {
 708         protocol_error(c);
 709         return;
 710     }
 711
 712     if (!c->authorized) {
 713         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 714         return;
 715     }
 716
 717     if (command == PA_COMMAND_LOOKUP_SINK) {
 718         struct pa_sink *sink;
 719         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
 720             index = sink->index;
 721     } else {
 722         struct pa_source *source;
 723         assert(command == PA_COMMAND_LOOKUP_SOURCE);
 724         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
 725             index = source->index;
 726     }
 727
 728     if (index == PA_IDXSET_INVALID)
 729         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 730     else {
 731         struct pa_tagstruct *reply;
 732         reply = pa_tagstruct_new(NULL, 0);
 733         assert(reply);
 734         pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 735         pa_tagstruct_putu32(reply, tag);
 736         pa_tagstruct_putu32(reply, index);
 737         pa_pstream_send_tagstruct(c->pstream, reply);
 738     }
 739 }
 740
 741 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 742     struct connection *c = userdata;
 743     uint32_t index;
 744     struct playback_stream *s;
 745     assert(c && t);
 746
 747     if (pa_tagstruct_getu32(t, &index) < 0 ||
 748         !pa_tagstruct_eof(t)) {
 749         protocol_error(c);
 750         return;
 751     }
 752
 753     if (!c->authorized) {
 754         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 755         return;
 756     }
 757
 758     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 759         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 760         return;
 761     }
 762
 763     s->drain_request = 0;
 764
 765     pa_memblockq_prebuf_disable(s->memblockq);
 766
 767     if (!pa_memblockq_is_readable(s->memblockq))
 768         pa_pstream_send_simple_ack(c->pstream, tag);
 769     else {
 770         s->drain_request = 1;
 771         s->drain_tag = tag;
 772
 773         pa_sink_notify(s->sink_input->sink);
 774     }
 775 }
 776
 777 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 778     struct connection *c = userdata;
 779     struct pa_tagstruct *reply;
 780     assert(c && t);
 781
 782     if (!pa_tagstruct_eof(t)) {
 783         protocol_error(c);
 784         return;
 785     }
 786
 787     if (!c->authorized) {
 788         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 789         return;
 790     }
 791
 792     reply = pa_tagstruct_new(NULL, 0);
 793     assert(reply);
 794     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 795     pa_tagstruct_putu32(reply, tag);
 796     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
 797     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
 798     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
 799     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
 800     pa_pstream_send_tagstruct(c->pstream, reply);
 801 }
 802
 803 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 804     struct connection *c = userdata;
 805     struct pa_tagstruct *reply;
 806     struct playback_stream *s;
 807     uint32_t index;
 808     assert(c && t);
 809
 810     if (pa_tagstruct_getu32(t, &index) < 0 ||
 811         !pa_tagstruct_eof(t)) {
 812         protocol_error(c);
 813         return;
 814     }
 815
 816     if (!c->authorized) {
 817         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 818         return;
 819     }
 820
 821     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 822         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 823         return;
 824     }
 825
 826     reply = pa_tagstruct_new(NULL, 0);
 827     assert(reply);
 828     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 829     pa_tagstruct_putu32(reply, tag);
 830     pa_tagstruct_putu32(reply, pa_sink_input_get_latency(s->sink_input));
 831     pa_tagstruct_putu32(reply, pa_sink_get_latency(s->sink_input->sink));
 832     pa_tagstruct_putu32(reply, pa_memblockq_is_readable(s->memblockq));
 833     pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
 834     pa_pstream_send_tagstruct(c->pstream, reply);
 835 }
 836
 837 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 838     struct connection *c = userdata;
 839     struct upload_stream *s;
 840     size_t length;
 841     const char *name;
 842     struct pa_sample_spec ss;
 843     struct pa_tagstruct *reply;
 844     assert(c && t && c->protocol && c->protocol->core);
 845
 846     if (pa_tagstruct_gets(t, &name) < 0 ||
 847         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 848         pa_tagstruct_getu32(t, &length) < 0 ||
 849         !pa_tagstruct_eof(t)) {
 850         protocol_error(c);
 851         return;
 852     }
 853
 854     if (!c->authorized) {
 855         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 856         return;
 857     }
 858
 859     if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
 860         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 861         return;
 862     }
 863
 864     if (!(s = upload_stream_new(c, &ss, name, length))) {
 865         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 866         return;
 867     }
 868
 869     reply = pa_tagstruct_new(NULL, 0);
 870     assert(reply);
 871     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 872     pa_tagstruct_putu32(reply, tag);
 873     pa_tagstruct_putu32(reply, s->index);
 874     pa_pstream_send_tagstruct(c->pstream, reply);
 875
 876     reply = pa_tagstruct_new(NULL, 0);
 877     assert(reply);
 878     pa_tagstruct_putu32(reply, PA_COMMAND_REQUEST);
 879     pa_tagstruct_putu32(reply, (uint32_t) -1); /* tag */
 880     pa_tagstruct_putu32(reply, s->index);
 881     pa_tagstruct_putu32(reply, length);
 882     pa_pstream_send_tagstruct(c->pstream, reply);
 883 }
 884
 885 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 886     struct connection *c = userdata;
 887     uint32_t channel;
 888     struct upload_stream *s;
 889     uint32_t index;
 890     assert(c && t);
 891
 892     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 893         !pa_tagstruct_eof(t)) {
 894         protocol_error(c);
 895         return;
 896     }
 897
 898     if (!c->authorized) {
 899         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 900         return;
 901     }
 902
 903     if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 904         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 905         return;
 906     }
 907
 908     pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
 909     pa_pstream_send_simple_ack(c->pstream, tag);
 910     upload_stream_free(s);
 911 }
 912
 913 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 914     struct connection *c = userdata;
 915     uint32_t sink_index, volume;
 916     struct pa_sink *sink;
 917     const char *name, *sink_name;
 918     assert(c && t);
 919
 920     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
 921         pa_tagstruct_gets(t, &sink_name) < 0 ||
 922         pa_tagstruct_getu32(t, &volume) < 0 ||
 923         pa_tagstruct_gets(t, &name) < 0 ||
 924         !pa_tagstruct_eof(t)) {
 925         protocol_error(c);
 926         return;
 927     }
 928
 929     if (!c->authorized) {
 930         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 931         return;
 932     }
 933
 934     if (sink_index != (uint32_t) -1)
 935         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 936     else
 937         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 938
 939     if (!sink) {
 940         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 941         return;
 942     }
 943
 944     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
 945         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 946         return;
 947     }
 948
 949     pa_pstream_send_simple_ack(c->pstream, tag);
 950 }
 951
 952 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 953     struct connection *c = userdata;
 954     const char *name;
 955     assert(c && t);
 956
 957     if (pa_tagstruct_gets(t, &name) < 0 ||
 958         !pa_tagstruct_eof(t)) {
 959         protocol_error(c);
 960         return;
 961     }
 962
 963     if (!c->authorized) {
 964         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 965         return;
 966     }
 967
 968     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
 969         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 970         return;
 971     }
 972
 973     pa_pstream_send_simple_ack(c->pstream, tag);
 974 }
 975
 976 static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
 977     assert(t && sink);
 978     pa_tagstruct_putu32(t, sink->index);
 979     pa_tagstruct_puts(t, sink->name);
 980     pa_tagstruct_puts(t, sink->description ? sink->description : "");
 981     pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
 982     pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
 983     pa_tagstruct_putu32(t, sink->volume);
 984     pa_tagstruct_putu32(t, sink->monitor_source->index);
 985     pa_tagstruct_puts(t, sink->monitor_source->name);
 986     pa_tagstruct_putu32(t, pa_sink_get_latency(sink));
 987 }
 988
 989 static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
 990     assert(t && source);
 991     pa_tagstruct_putu32(t, source->index);
 992     pa_tagstruct_puts(t, source->name);
 993     pa_tagstruct_puts(t, source->description ? source->description : "");
 994     pa_tagstruct_put_sample_spec(t, &source->sample_spec);
 995     pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
 996     pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
 997     pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : "");
 998 }
 999
1000 static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
1001     assert(t && client);
1002     pa_tagstruct_putu32(t, client->index);
1003     pa_tagstruct_puts(t, client->name);
1004     pa_tagstruct_puts(t, client->protocol_name);
1005     pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
1006 }
1007
1008 static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
1009     assert(t && module);
1010     pa_tagstruct_putu32(t, module->index);
1011     pa_tagstruct_puts(t, module->name);
1012     pa_tagstruct_puts(t, module->argument ? module->argument : "");
1013     pa_tagstruct_putu32(t, module->n_used);
1014     pa_tagstruct_putu32(t, module->auto_unload);
1015 }
1016
1017 static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
1018     assert(t && s);
1019     pa_tagstruct_putu32(t, s->index);
1020     pa_tagstruct_puts(t, s->name ? s->name : "");
1021     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1022     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1023     pa_tagstruct_putu32(t, s->sink->index);
1024     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1025     pa_tagstruct_putu32(t, s->volume);
1026     pa_tagstruct_putu32(t, pa_sink_input_get_latency(s));
1027     pa_tagstruct_putu32(t, pa_sink_get_latency(s->sink));
1028 }
1029
1030 static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
1031     assert(t && s);
1032     pa_tagstruct_putu32(t, s->index);
1033     pa_tagstruct_puts(t, s->name ? s->name : "");
1034     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1035     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1036     pa_tagstruct_putu32(t, s->source->index);
1037     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1038 }
1039
1040 static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
1041     assert(t && e);
1042     pa_tagstruct_putu32(t, e->index);
1043     pa_tagstruct_puts(t, e->name);
1044     pa_tagstruct_putu32(t, e->volume);
1045     pa_tagstruct_putu32(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
1046     pa_tagstruct_put_sample_spec(t, &e->sample_spec);
1047 }
1048
1049 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1050     struct connection *c = userdata;
1051     uint32_t index;
1052     struct pa_sink *sink = NULL;
1053     struct pa_source *source = NULL;
1054     struct pa_client *client = NULL;
1055     struct pa_module *module = NULL;
1056     struct pa_sink_input *si = NULL;
1057     struct pa_source_output *so = NULL;
1058     struct pa_scache_entry *sce = NULL;
1059     const char *name;
1060     struct pa_tagstruct *reply;
1061     assert(c && t);
1062
1063
1064     if (pa_tagstruct_getu32(t, &index) < 0 ||
1065         (command != PA_COMMAND_GET_CLIENT_INFO &&
1066          command != PA_COMMAND_GET_MODULE_INFO &&
1067          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
1068          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
1069          pa_tagstruct_gets(t, &name) < 0) ||
1070         !pa_tagstruct_eof(t)) {
1071         protocol_error(c);
1072         return;
1073     }
1074
1075     if (!c->authorized) {
1076         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1077         return;
1078     }
1079
1080     if (command == PA_COMMAND_GET_SINK_INFO) {
1081         if (index != (uint32_t) -1)
1082             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1083         else
1084             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1085     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
1086         if (index != (uint32_t) -1)
1087             source = pa_idxset_get_by_index(c->protocol->core->sources, index);
1088         else
1089             source = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SOURCE, 1);
1090     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
1091         client = pa_idxset_get_by_index(c->protocol->core->clients, index);
1092     else if (command == PA_COMMAND_GET_MODULE_INFO)
1093         module = pa_idxset_get_by_index(c->protocol->core->modules, index);
1094     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
1095         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1096     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
1097         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
1098     else {
1099         assert(command == PA_COMMAND_GET_SAMPLE_INFO && name);
1100         if (index != (uint32_t) -1)
1101             sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
1102         else
1103             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
1104     }
1105
1106     if (!sink && !source && !client && !module && !si && !so && !sce) {
1107         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1108         return;
1109     }
1110
1111     reply = pa_tagstruct_new(NULL, 0);
1112     assert(reply);
1113     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1114     pa_tagstruct_putu32(reply, tag);
1115     if (sink)
1116         sink_fill_tagstruct(reply, sink);
1117     else if (source)
1118         source_fill_tagstruct(reply, source);
1119     else if (client)
1120         client_fill_tagstruct(reply, client);
1121     else if (module)
1122         module_fill_tagstruct(reply, module);
1123     else if (si)
1124         sink_input_fill_tagstruct(reply, si);
1125     else if (so)
1126         source_output_fill_tagstruct(reply, so);
1127     else
1128         scache_fill_tagstruct(reply, sce);
1129     pa_pstream_send_tagstruct(c->pstream, reply);
1130 }
1131
1132 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1133     struct connection *c = userdata;
1134     struct pa_idxset *i;
1135     uint32_t index;
1136     void *p;
1137     struct pa_tagstruct *reply;
1138     assert(c && t);
1139
1140     if (!pa_tagstruct_eof(t)) {
1141         protocol_error(c);
1142         return;
1143     }
1144
1145     if (!c->authorized) {
1146         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1147         return;
1148     }
1149
1150     reply = pa_tagstruct_new(NULL, 0);
1151     assert(reply);
1152     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1153     pa_tagstruct_putu32(reply, tag);
1154
1155     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1156         i = c->protocol->core->sinks;
1157     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1158         i = c->protocol->core->sources;
1159     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1160         i = c->protocol->core->clients;
1161     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1162         i = c->protocol->core->modules;
1163     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1164         i = c->protocol->core->sink_inputs;
1165     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1166         i = c->protocol->core->source_outputs;
1167     else {
1168         assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1169         i = c->protocol->core->scache;
1170     }
1171
1172     if (i) {
1173         for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
1174             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1175                 sink_fill_tagstruct(reply, p);
1176             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1177                 source_fill_tagstruct(reply, p);
1178             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1179                 client_fill_tagstruct(reply, p);
1180             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1181                 module_fill_tagstruct(reply, p);
1182             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1183                 sink_input_fill_tagstruct(reply, p);
1184             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1185                 source_output_fill_tagstruct(reply, p);
1186             else {
1187                 assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1188                 scache_fill_tagstruct(reply, p);
1189             }
1190         }
1191     }
1192
1193     pa_pstream_send_tagstruct(c->pstream, reply);
1194 }
1195
1196 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1197     struct connection *c = userdata;
1198     struct pa_tagstruct *reply;
1199     char txt[256];
1200     assert(c && t);
1201
1202     if (!pa_tagstruct_eof(t)) {
1203         protocol_error(c);
1204         return;
1205     }
1206
1207     if (!c->authorized) {
1208         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1209         return;
1210     }
1211
1212     reply = pa_tagstruct_new(NULL, 0);
1213     assert(reply);
1214     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1215     pa_tagstruct_putu32(reply, tag);
1216     pa_tagstruct_puts(reply, PACKAGE_NAME);
1217     pa_tagstruct_puts(reply, PACKAGE_VERSION);
1218     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
1219     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
1220     pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
1221     pa_pstream_send_tagstruct(c->pstream, reply);
1222 }
1223
1224 static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
1225     struct pa_tagstruct *t;
1226     struct connection *c = userdata;
1227     assert(c && core);
1228
1229     t = pa_tagstruct_new(NULL, 0);
1230     assert(t);
1231     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
1232     pa_tagstruct_putu32(t, (uint32_t) -1);
1233     pa_tagstruct_putu32(t, e);
1234     pa_tagstruct_putu32(t, index);
1235     pa_pstream_send_tagstruct(c->pstream, t);
1236 }
1237
1238 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1239     struct connection *c = userdata;
1240     enum pa_subscription_mask m;
1241     assert(c && t);
1242
1243     if (pa_tagstruct_getu32(t, &m) < 0 ||
1244         !pa_tagstruct_eof(t)) {
1245         protocol_error(c);
1246         return;
1247     }
1248
1249     if (!c->authorized) {
1250         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1251         return;
1252     }
1253
1254     if (c->subscription)
1255         pa_subscription_free(c->subscription);
1256
1257     if (m != 0) {
1258         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
1259         assert(c->subscription);
1260     } else
1261         c->subscription = NULL;
1262
1263     pa_pstream_send_simple_ack(c->pstream, tag);
1264 }
1265
1266 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1267     struct connection *c = userdata;
1268     uint32_t index, volume;
1269     struct pa_sink *sink = NULL;
1270     struct pa_sink_input *si = NULL;
1271     const char *name = NULL;
1272     assert(c && t);
1273
1274     if (pa_tagstruct_getu32(t, &index) < 0 ||
1275         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
1276         pa_tagstruct_getu32(t, &volume) ||
1277         !pa_tagstruct_eof(t)) {
1278         protocol_error(c);
1279         return;
1280     }
1281
1282     if (!c->authorized) {
1283         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1284         return;
1285     }
1286
1287     if (command == PA_COMMAND_SET_SINK_VOLUME) {
1288         if (index != (uint32_t) -1)
1289             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1290         else
1291             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1292     }  else {
1293         assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
1294         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1295     }
1296
1297     if (!si && !sink) {
1298         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1299         return;
1300     }
1301
1302     if (sink)
1303         pa_sink_set_volume(sink, volume);
1304     else if (si)
1305         pa_sink_input_set_volume(si, volume);
1306
1307     pa_pstream_send_simple_ack(c->pstream, tag);
1308 }
1309
1310 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1311     struct connection *c = userdata;
1312     uint32_t index;
1313     uint32_t b;
1314     struct playback_stream *s;
1315     assert(c && t);
1316
1317     if (pa_tagstruct_getu32(t, &index) < 0 ||
1318         pa_tagstruct_getu32(t, &b) < 0 ||
1319         !pa_tagstruct_eof(t)) {
1320         protocol_error(c);
1321         return;
1322     }
1323
1324     if (!c->authorized) {
1325         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1326         return;
1327     }
1328
1329     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1330         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1331         return;
1332     }
1333
1334     pa_sink_input_cork(s->sink_input, b);
1335     pa_pstream_send_simple_ack(c->pstream, tag);
1336 }
1337
1338 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1339     struct connection *c = userdata;
1340     uint32_t index;
1341     struct playback_stream *s;
1342     assert(c && t);
1343
1344     if (pa_tagstruct_getu32(t, &index) < 0 ||
1345         !pa_tagstruct_eof(t)) {
1346         protocol_error(c);
1347         return;
1348     }
1349
1350     if (!c->authorized) {
1351         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1352         return;
1353     }
1354
1355     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1356         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1357         return;
1358     }
1359
1360     if (command == PA_COMMAND_TRIGGER_PLAYBACK_STREAM)
1361         pa_memblockq_prebuf_disable(s->memblockq);
1362     else {
1363         assert(command == PA_COMMAND_FLUSH_PLAYBACK_STREAM);
1364         pa_memblockq_flush(s->memblockq);
1365         /*fprintf(stderr, "flush: %u\n", pa_memblockq_get_length(s->memblockq));*/
1366     }
1367
1368     pa_sink_notify(s->sink_input->sink);
1369     pa_pstream_send_simple_ack(c->pstream, tag);
1370     request_bytes(s);
1371 }
1372
1373 /*** pstream callbacks ***/
1374
1375 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
1376     struct connection *c = userdata;
1377     assert(p && packet && packet->data && c);
1378
1379     if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
1380         fprintf(stderr, "protocol-native: invalid packet.\n");
1381         connection_free(c);
1382     }
1383 }
1384
1385 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
1386     struct connection *c = userdata;
1387     struct output_stream *stream;
1388     assert(p && chunk && userdata);
1389
1390     if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
1391         fprintf(stderr, "protocol-native: client sent block for invalid stream.\n");
1392         connection_free(c);
1393         return;
1394     }
1395
1396     if (stream->type == PLAYBACK_STREAM) {
1397         struct playback_stream *p = (struct playback_stream*) stream;
1398         if (chunk->length >= p->requested_bytes)
1399             p->requested_bytes = 0;
1400         else
1401             p->requested_bytes -= chunk->length;
1402
1403         pa_memblockq_push_align(p->memblockq, chunk, delta);
1404         assert(p->sink_input);
1405         /*fprintf(stderr, "after_recv: %u\n", pa_memblockq_get_length(p->memblockq));*/
1406
1407         pa_sink_notify(p->sink_input->sink);
1408         /*fprintf(stderr, "Recieved %u bytes.\n", chunk->length);*/
1409
1410     } else {
1411         struct upload_stream *u = (struct upload_stream*) stream;
1412         size_t l;
1413         assert(u->type == UPLOAD_STREAM);
1414
1415         if (!u->memchunk.memblock) {
1416             if (u->length == chunk->length) {
1417                 u->memchunk = *chunk;
1418                 pa_memblock_ref(u->memchunk.memblock);
1419                 u->length = 0;
1420             } else {
1421                 u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
1422                 u->memchunk.index = u->memchunk.length = 0;
1423             }
1424         }
1425
1426         assert(u->memchunk.memblock);
1427
1428         l = u->length;
1429         if (l > chunk->length)
1430             l = chunk->length;
1431
1432         if (l > 0) {
1433             memcpy((uint8_t*) u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length,
1434                    (uint8_t*) chunk->memblock->data+chunk->index, l);
1435             u->memchunk.length += l;
1436             u->length -= l;
1437         }
1438     }
1439 }
1440
1441 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
1442     struct connection *c = userdata;
1443     assert(p && c);
1444     connection_free(c);
1445
1446 /*    fprintf(stderr, "protocol-native: connection died.\n");*/
1447 }
1448
1449
1450 static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
1451     struct connection *c = userdata;
1452     assert(p && c);
1453
1454     send_memblock(c);
1455 }
1456
1457 /*** client callbacks ***/
1458
1459 static void client_kill_cb(struct pa_client *c) {
1460     assert(c && c->userdata);
1461     connection_free(c->userdata);
1462 }
1463
1464 /*** socket server callbacks ***/
1465
1466 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1467     struct pa_protocol_native *p = userdata;
1468     struct connection *c;
1469     assert(s && io && p);
1470
1471     c = pa_xmalloc(sizeof(struct connection));
1472     c->authorized = p->public;
1473     c->protocol = p;
1474     assert(p->core);
1475     c->client = pa_client_new(p->core, "NATIVE", "Client");
1476     assert(c->client);
1477     c->client->kill = client_kill_cb;
1478     c->client->userdata = c;
1479     c->client->owner = p->module;
1480
1481     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
1482     assert(c->pstream);
1483
1484     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
1485     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
1486     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
1487     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
1488
1489     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
1490     assert(c->pdispatch);
1491
1492     c->record_streams = pa_idxset_new(NULL, NULL);
1493     c->output_streams = pa_idxset_new(NULL, NULL);
1494     assert(c->record_streams && c->output_streams);
1495
1496     c->rrobin_index = PA_IDXSET_INVALID;
1497     c->subscription = NULL;
1498
1499     pa_idxset_put(p->connections, c, NULL);
1500 }
1501
1502 /*** module entry points ***/
1503
1504 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) {
1505     struct pa_protocol_native *p;
1506     uint32_t public;
1507     assert(core && server && ma);
1508
1509     if (pa_modargs_get_value_u32(ma, "public", &public) < 0) {
1510         fprintf(stderr, __FILE__": public= expects numeric argument.\n");
1511         return NULL;
1512     }
1513
1514     p = pa_xmalloc(sizeof(struct pa_protocol_native));
1515
1516     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
1517         pa_xfree(p);
1518         return NULL;
1519     }
1520
1521     p->module = m;
1522     p->public = public;
1523     p->server = server;
1524     p->core = core;
1525     p->connections = pa_idxset_new(NULL, NULL);
1526     assert(p->connections);
1527
1528     pa_socket_server_set_callback(p->server, on_connection, p);
1529
1530     return p;
1531 }
1532
1533 void pa_protocol_native_free(struct pa_protocol_native *p) {
1534     struct connection *c;
1535     assert(p);
1536
1537     while ((c = pa_idxset_first(p->connections, NULL)))
1538         connection_free(c);
1539     pa_idxset_free(p->connections, NULL, NULL);
1540     pa_socket_server_unref(p->server);
1541     pa_xfree(p);
1542 }