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     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
 425         return -1;
 426
 427     return 0;
 428 }
 429
 430 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
 431     struct playback_stream *s;
 432     assert(i && i->userdata && length);
 433     s = i->userdata;
 434
 435     pa_memblockq_drop(s->memblockq, chunk, length);
 436     request_bytes(s);
 437
 438     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
 439         pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
 440         s->drain_request = 0;
 441     }
 442
 443     /*fprintf(stderr, "after_drop: %u\n", pa_memblockq_get_length(s->memblockq));*/
 444 }
 445
 446 static void sink_input_kill_cb(struct pa_sink_input *i) {
 447     assert(i && i->userdata);
 448     send_playback_stream_killed((struct playback_stream *) i->userdata);
 449     playback_stream_free((struct playback_stream *) i->userdata);
 450 }
 451
 452 static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i) {
 453     struct playback_stream *s;
 454     assert(i && i->userdata);
 455     s = i->userdata;
 456
 457     /*fprintf(stderr, "get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
 458
 459     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
 460 }
 461
 462 /*** source_output callbacks ***/
 463
 464 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
 465     struct record_stream *s;
 466     assert(o && o->userdata && chunk);
 467     s = o->userdata;
 468
 469     pa_memblockq_push(s->memblockq, chunk, 0);
 470     if (!pa_pstream_is_pending(s->connection->pstream))
 471         send_memblock(s->connection);
 472 }
 473
 474 static void source_output_kill_cb(struct pa_source_output *o) {
 475     assert(o && o->userdata);
 476     send_record_stream_killed((struct record_stream *) o->userdata);
 477     record_stream_free((struct record_stream *) o->userdata);
 478 }
 479
 480 /*** pdispatch callbacks ***/
 481
 482 static void protocol_error(struct connection *c) {
 483     fprintf(stderr, __FILE__": protocol error, kicking client\n");
 484     connection_free(c);
 485 }
 486
 487 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 488     struct connection *c = userdata;
 489     struct playback_stream *s;
 490     size_t maxlength, tlength, prebuf, minreq;
 491     uint32_t sink_index;
 492     const char *name, *sink_name;
 493     struct pa_sample_spec ss;
 494     struct pa_tagstruct *reply;
 495     struct pa_sink *sink;
 496     assert(c && t && c->protocol && c->protocol->core);
 497
 498     if (pa_tagstruct_gets(t, &name) < 0 ||
 499         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 500         pa_tagstruct_getu32(t, &sink_index) < 0 ||
 501         pa_tagstruct_gets(t, &sink_name) < 0 ||
 502         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 503         pa_tagstruct_getu32(t, &tlength) < 0 ||
 504         pa_tagstruct_getu32(t, &prebuf) < 0 ||
 505         pa_tagstruct_getu32(t, &minreq) < 0 ||
 506         !pa_tagstruct_eof(t)) {
 507         protocol_error(c);
 508         return;
 509     }
 510
 511     if (!c->authorized) {
 512         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 513         return;
 514     }
 515
 516     if (sink_index != (uint32_t) -1)
 517         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 518     else
 519         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 520
 521     if (!sink) {
 522         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 523         return;
 524     }
 525
 526     if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
 527         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 528         return;
 529     }
 530
 531     reply = pa_tagstruct_new(NULL, 0);
 532     assert(reply);
 533     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 534     pa_tagstruct_putu32(reply, tag);
 535     pa_tagstruct_putu32(reply, s->index);
 536     assert(s->sink_input);
 537     pa_tagstruct_putu32(reply, s->sink_input->index);
 538     pa_pstream_send_tagstruct(c->pstream, reply);
 539     request_bytes(s);
 540 }
 541
 542 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 543     struct connection *c = userdata;
 544     uint32_t channel;
 545     assert(c && t);
 546
 547     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 548         !pa_tagstruct_eof(t)) {
 549         protocol_error(c);
 550         return;
 551     }
 552
 553     if (!c->authorized) {
 554         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 555         return;
 556     }
 557
 558     if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
 559         struct playback_stream *s;
 560         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
 561             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 562             return;
 563         }
 564
 565         playback_stream_free(s);
 566     } else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
 567         struct record_stream *s;
 568         if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
 569             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 570             return;
 571         }
 572
 573         record_stream_free(s);
 574     } else {
 575         struct upload_stream *s;
 576         assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
 577         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 578             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 579             return;
 580         }
 581
 582         upload_stream_free(s);
 583     }
 584
 585     pa_pstream_send_simple_ack(c->pstream, tag);
 586 }
 587
 588 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 589     struct connection *c = userdata;
 590     struct record_stream *s;
 591     size_t maxlength, fragment_size;
 592     uint32_t source_index;
 593     const char *name, *source_name;
 594     struct pa_sample_spec ss;
 595     struct pa_tagstruct *reply;
 596     struct pa_source *source;
 597     assert(c && t && c->protocol && c->protocol->core);
 598
 599     if (pa_tagstruct_gets(t, &name) < 0 ||
 600         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 601         pa_tagstruct_getu32(t, &source_index) < 0 ||
 602         pa_tagstruct_gets(t, &source_name) < 0 ||
 603         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 604         pa_tagstruct_getu32(t, &fragment_size) < 0 ||
 605         !pa_tagstruct_eof(t)) {
 606         protocol_error(c);
 607         return;
 608     }
 609
 610     if (!c->authorized) {
 611         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 612         return;
 613     }
 614
 615     if (source_index != (uint32_t) -1)
 616         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
 617     else
 618         source = pa_namereg_get(c->protocol->core, *source_name ? source_name : NULL, PA_NAMEREG_SOURCE, 1);
 619
 620     if (!source) {
 621         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 622         return;
 623     }
 624
 625     if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
 626         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 627         return;
 628     }
 629
 630     reply = pa_tagstruct_new(NULL, 0);
 631     assert(reply);
 632     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 633     pa_tagstruct_putu32(reply, tag);
 634     pa_tagstruct_putu32(reply, s->index);
 635     assert(s->source_output);
 636     pa_tagstruct_putu32(reply, s->source_output->index);
 637     pa_pstream_send_tagstruct(c->pstream, reply);
 638 }
 639
 640 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 641     struct connection *c = userdata;
 642     assert(c && t);
 643
 644     if (!pa_tagstruct_eof(t)) {
 645         protocol_error(c);
 646         return;
 647     }
 648
 649     if (!c->authorized) {
 650         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 651         return;
 652     }
 653
 654     assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
 655     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
 656     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 657     return;
 658 }
 659
 660 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 661     struct connection *c = userdata;
 662     const void*cookie;
 663     assert(c && t);
 664
 665     if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
 666         !pa_tagstruct_eof(t)) {
 667         protocol_error(c);
 668         return;
 669     }
 670
 671     if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
 672         fprintf(stderr, "protocol-native.c: Denied access to client with invalid authorization key.\n");
 673         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 674         return;
 675     }
 676
 677     c->authorized = 1;
 678     pa_pstream_send_simple_ack(c->pstream, tag);
 679     return;
 680 }
 681
 682 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 683     struct connection *c = userdata;
 684     const char *name;
 685     assert(c && t);
 686
 687     if (pa_tagstruct_gets(t, &name) < 0 ||
 688         !pa_tagstruct_eof(t)) {
 689         protocol_error(c);
 690         return;
 691     }
 692
 693     pa_client_rename(c->client, name);
 694     pa_pstream_send_simple_ack(c->pstream, tag);
 695     return;
 696 }
 697
 698 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 699     struct connection *c = userdata;
 700     const char *name;
 701     uint32_t index = PA_IDXSET_INVALID;
 702     assert(c && t);
 703
 704     if (pa_tagstruct_gets(t, &name) < 0 ||
 705         !pa_tagstruct_eof(t)) {
 706         protocol_error(c);
 707         return;
 708     }
 709
 710     if (!c->authorized) {
 711         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 712         return;
 713     }
 714
 715     if (command == PA_COMMAND_LOOKUP_SINK) {
 716         struct pa_sink *sink;
 717         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
 718             index = sink->index;
 719     } else {
 720         struct pa_source *source;
 721         assert(command == PA_COMMAND_LOOKUP_SOURCE);
 722         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
 723             index = source->index;
 724     }
 725
 726     if (index == PA_IDXSET_INVALID)
 727         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 728     else {
 729         struct pa_tagstruct *reply;
 730         reply = pa_tagstruct_new(NULL, 0);
 731         assert(reply);
 732         pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 733         pa_tagstruct_putu32(reply, tag);
 734         pa_tagstruct_putu32(reply, index);
 735         pa_pstream_send_tagstruct(c->pstream, reply);
 736     }
 737 }
 738
 739 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 740     struct connection *c = userdata;
 741     uint32_t index;
 742     struct playback_stream *s;
 743     assert(c && t);
 744
 745     if (pa_tagstruct_getu32(t, &index) < 0 ||
 746         !pa_tagstruct_eof(t)) {
 747         protocol_error(c);
 748         return;
 749     }
 750
 751     if (!c->authorized) {
 752         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 753         return;
 754     }
 755
 756     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 757         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 758         return;
 759     }
 760
 761     s->drain_request = 0;
 762
 763     pa_memblockq_prebuf_disable(s->memblockq);
 764
 765     if (!pa_memblockq_is_readable(s->memblockq))
 766         pa_pstream_send_simple_ack(c->pstream, tag);
 767     else {
 768         s->drain_request = 1;
 769         s->drain_tag = tag;
 770
 771         pa_sink_notify(s->sink_input->sink);
 772     }
 773 }
 774
 775 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 776     struct connection *c = userdata;
 777     struct pa_tagstruct *reply;
 778     assert(c && t);
 779
 780     if (!pa_tagstruct_eof(t)) {
 781         protocol_error(c);
 782         return;
 783     }
 784
 785     if (!c->authorized) {
 786         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 787         return;
 788     }
 789
 790     reply = pa_tagstruct_new(NULL, 0);
 791     assert(reply);
 792     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 793     pa_tagstruct_putu32(reply, tag);
 794     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
 795     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
 796     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
 797     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
 798     pa_pstream_send_tagstruct(c->pstream, reply);
 799 }
 800
 801 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 802     struct connection *c = userdata;
 803     struct pa_tagstruct *reply;
 804     struct playback_stream *s;
 805     uint32_t index;
 806     assert(c && t);
 807
 808     if (pa_tagstruct_getu32(t, &index) < 0 ||
 809         !pa_tagstruct_eof(t)) {
 810         protocol_error(c);
 811         return;
 812     }
 813
 814     if (!c->authorized) {
 815         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 816         return;
 817     }
 818
 819     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 820         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 821         return;
 822     }
 823
 824     reply = pa_tagstruct_new(NULL, 0);
 825     assert(reply);
 826     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 827     pa_tagstruct_putu32(reply, tag);
 828     pa_tagstruct_putu32(reply, pa_sink_input_get_latency(s->sink_input));
 829     pa_tagstruct_putu32(reply, pa_sink_get_latency(s->sink_input->sink));
 830     pa_tagstruct_putu32(reply, pa_memblockq_is_readable(s->memblockq));
 831     pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
 832     pa_pstream_send_tagstruct(c->pstream, reply);
 833 }
 834
 835 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 836     struct connection *c = userdata;
 837     struct upload_stream *s;
 838     size_t length;
 839     const char *name;
 840     struct pa_sample_spec ss;
 841     struct pa_tagstruct *reply;
 842     assert(c && t && c->protocol && c->protocol->core);
 843
 844     if (pa_tagstruct_gets(t, &name) < 0 ||
 845         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 846         pa_tagstruct_getu32(t, &length) < 0 ||
 847         !pa_tagstruct_eof(t)) {
 848         protocol_error(c);
 849         return;
 850     }
 851
 852     if (!c->authorized) {
 853         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 854         return;
 855     }
 856
 857     if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
 858         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 859         return;
 860     }
 861
 862     if (!(s = upload_stream_new(c, &ss, name, length))) {
 863         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 864         return;
 865     }
 866
 867     reply = pa_tagstruct_new(NULL, 0);
 868     assert(reply);
 869     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 870     pa_tagstruct_putu32(reply, tag);
 871     pa_tagstruct_putu32(reply, s->index);
 872     pa_pstream_send_tagstruct(c->pstream, reply);
 873
 874     reply = pa_tagstruct_new(NULL, 0);
 875     assert(reply);
 876     pa_tagstruct_putu32(reply, PA_COMMAND_REQUEST);
 877     pa_tagstruct_putu32(reply, (uint32_t) -1); /* tag */
 878     pa_tagstruct_putu32(reply, s->index);
 879     pa_tagstruct_putu32(reply, length);
 880     pa_pstream_send_tagstruct(c->pstream, reply);
 881 }
 882
 883 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 884     struct connection *c = userdata;
 885     uint32_t channel;
 886     struct upload_stream *s;
 887     uint32_t index;
 888     assert(c && t);
 889
 890     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 891         !pa_tagstruct_eof(t)) {
 892         protocol_error(c);
 893         return;
 894     }
 895
 896     if (!c->authorized) {
 897         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 898         return;
 899     }
 900
 901     if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 902         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 903         return;
 904     }
 905
 906     pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
 907     pa_pstream_send_simple_ack(c->pstream, tag);
 908     upload_stream_free(s);
 909 }
 910
 911 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 912     struct connection *c = userdata;
 913     uint32_t sink_index, volume;
 914     struct pa_sink *sink;
 915     const char *name, *sink_name;
 916     assert(c && t);
 917
 918     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
 919         pa_tagstruct_gets(t, &sink_name) < 0 ||
 920         pa_tagstruct_getu32(t, &volume) < 0 ||
 921         pa_tagstruct_gets(t, &name) < 0 ||
 922         !pa_tagstruct_eof(t)) {
 923         protocol_error(c);
 924         return;
 925     }
 926
 927     if (!c->authorized) {
 928         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 929         return;
 930     }
 931
 932     if (sink_index != (uint32_t) -1)
 933         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 934     else
 935         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 936
 937     if (!sink) {
 938         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 939         return;
 940     }
 941
 942     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
 943         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 944         return;
 945     }
 946
 947     pa_pstream_send_simple_ack(c->pstream, tag);
 948 }
 949
 950 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 951     struct connection *c = userdata;
 952     const char *name;
 953     assert(c && t);
 954
 955     if (pa_tagstruct_gets(t, &name) < 0 ||
 956         !pa_tagstruct_eof(t)) {
 957         protocol_error(c);
 958         return;
 959     }
 960
 961     if (!c->authorized) {
 962         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 963         return;
 964     }
 965
 966     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
 967         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 968         return;
 969     }
 970
 971     pa_pstream_send_simple_ack(c->pstream, tag);
 972 }
 973
 974 static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
 975     assert(t && sink);
 976     pa_tagstruct_putu32(t, sink->index);
 977     pa_tagstruct_puts(t, sink->name);
 978     pa_tagstruct_puts(t, sink->description ? sink->description : "");
 979     pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
 980     pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
 981     pa_tagstruct_putu32(t, sink->volume);
 982     pa_tagstruct_putu32(t, sink->monitor_source->index);
 983     pa_tagstruct_puts(t, sink->monitor_source->name);
 984     pa_tagstruct_putu32(t, pa_sink_get_latency(sink));
 985 }
 986
 987 static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
 988     assert(t && source);
 989     pa_tagstruct_putu32(t, source->index);
 990     pa_tagstruct_puts(t, source->name);
 991     pa_tagstruct_puts(t, source->description ? source->description : "");
 992     pa_tagstruct_put_sample_spec(t, &source->sample_spec);
 993     pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
 994     pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
 995     pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : "");
 996 }
 997
 998 static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
 999     assert(t && client);
1000     pa_tagstruct_putu32(t, client->index);
1001     pa_tagstruct_puts(t, client->name);
1002     pa_tagstruct_puts(t, client->protocol_name);
1003     pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
1004 }
1005
1006 static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
1007     assert(t && module);
1008     pa_tagstruct_putu32(t, module->index);
1009     pa_tagstruct_puts(t, module->name);
1010     pa_tagstruct_puts(t, module->argument ? module->argument : "");
1011     pa_tagstruct_putu32(t, module->n_used);
1012     pa_tagstruct_putu32(t, module->auto_unload);
1013 }
1014
1015 static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
1016     assert(t && s);
1017     pa_tagstruct_putu32(t, s->index);
1018     pa_tagstruct_puts(t, s->name ? s->name : "");
1019     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1020     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1021     pa_tagstruct_putu32(t, s->sink->index);
1022     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1023     pa_tagstruct_putu32(t, s->volume);
1024     pa_tagstruct_putu32(t, pa_sink_input_get_latency(s));
1025 }
1026
1027 static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
1028     assert(t && s);
1029     pa_tagstruct_putu32(t, s->index);
1030     pa_tagstruct_puts(t, s->name ? s->name : "");
1031     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1032     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1033     pa_tagstruct_putu32(t, s->source->index);
1034     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1035 }
1036
1037 static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
1038     assert(t && e);
1039     pa_tagstruct_putu32(t, e->index);
1040     pa_tagstruct_puts(t, e->name);
1041     pa_tagstruct_putu32(t, e->volume);
1042     pa_tagstruct_putu32(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
1043     pa_tagstruct_put_sample_spec(t, &e->sample_spec);
1044 }
1045
1046 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1047     struct connection *c = userdata;
1048     uint32_t index;
1049     struct pa_sink *sink = NULL;
1050     struct pa_source *source = NULL;
1051     struct pa_client *client = NULL;
1052     struct pa_module *module = NULL;
1053     struct pa_sink_input *si = NULL;
1054     struct pa_source_output *so = NULL;
1055     struct pa_scache_entry *sce = NULL;
1056     const char *name;
1057     struct pa_tagstruct *reply;
1058     assert(c && t);
1059
1060
1061     if (pa_tagstruct_getu32(t, &index) < 0 ||
1062         (command != PA_COMMAND_GET_CLIENT_INFO &&
1063          command != PA_COMMAND_GET_MODULE_INFO &&
1064          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
1065          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
1066          pa_tagstruct_gets(t, &name) < 0) ||
1067         !pa_tagstruct_eof(t)) {
1068         protocol_error(c);
1069         return;
1070     }
1071
1072     if (!c->authorized) {
1073         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1074         return;
1075     }
1076
1077     if (command == PA_COMMAND_GET_SINK_INFO) {
1078         if (index != (uint32_t) -1)
1079             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1080         else
1081             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1082     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
1083         if (index != (uint32_t) -1)
1084             source = pa_idxset_get_by_index(c->protocol->core->sources, index);
1085         else
1086             source = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SOURCE, 1);
1087     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
1088         client = pa_idxset_get_by_index(c->protocol->core->clients, index);
1089     else if (command == PA_COMMAND_GET_MODULE_INFO)
1090         module = pa_idxset_get_by_index(c->protocol->core->modules, index);
1091     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
1092         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1093     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
1094         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
1095     else {
1096         assert(command == PA_COMMAND_GET_SAMPLE_INFO && name);
1097         if (index != (uint32_t) -1)
1098             sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
1099         else
1100             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
1101     }
1102
1103     if (!sink && !source && !client && !module && !si && !so && !sce) {
1104         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1105         return;
1106     }
1107
1108     reply = pa_tagstruct_new(NULL, 0);
1109     assert(reply);
1110     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1111     pa_tagstruct_putu32(reply, tag);
1112     if (sink)
1113         sink_fill_tagstruct(reply, sink);
1114     else if (source)
1115         source_fill_tagstruct(reply, source);
1116     else if (client)
1117         client_fill_tagstruct(reply, client);
1118     else if (module)
1119         module_fill_tagstruct(reply, module);
1120     else if (si)
1121         sink_input_fill_tagstruct(reply, si);
1122     else if (so)
1123         source_output_fill_tagstruct(reply, so);
1124     else
1125         scache_fill_tagstruct(reply, sce);
1126     pa_pstream_send_tagstruct(c->pstream, reply);
1127 }
1128
1129 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1130     struct connection *c = userdata;
1131     struct pa_idxset *i;
1132     uint32_t index;
1133     void *p;
1134     struct pa_tagstruct *reply;
1135     assert(c && t);
1136
1137     if (!pa_tagstruct_eof(t)) {
1138         protocol_error(c);
1139         return;
1140     }
1141
1142     if (!c->authorized) {
1143         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1144         return;
1145     }
1146
1147     reply = pa_tagstruct_new(NULL, 0);
1148     assert(reply);
1149     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1150     pa_tagstruct_putu32(reply, tag);
1151
1152     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1153         i = c->protocol->core->sinks;
1154     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1155         i = c->protocol->core->sources;
1156     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1157         i = c->protocol->core->clients;
1158     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1159         i = c->protocol->core->modules;
1160     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1161         i = c->protocol->core->sink_inputs;
1162     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1163         i = c->protocol->core->source_outputs;
1164     else {
1165         assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1166         i = c->protocol->core->scache;
1167     }
1168
1169     if (i) {
1170         for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
1171             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1172                 sink_fill_tagstruct(reply, p);
1173             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1174                 source_fill_tagstruct(reply, p);
1175             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1176                 client_fill_tagstruct(reply, p);
1177             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1178                 module_fill_tagstruct(reply, p);
1179             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1180                 sink_input_fill_tagstruct(reply, p);
1181             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1182                 source_output_fill_tagstruct(reply, p);
1183             else {
1184                 assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1185                 scache_fill_tagstruct(reply, p);
1186             }
1187         }
1188     }
1189
1190     pa_pstream_send_tagstruct(c->pstream, reply);
1191 }
1192
1193 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1194     struct connection *c = userdata;
1195     struct pa_tagstruct *reply;
1196     char txt[256];
1197     assert(c && t);
1198
1199     if (!pa_tagstruct_eof(t)) {
1200         protocol_error(c);
1201         return;
1202     }
1203
1204     if (!c->authorized) {
1205         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1206         return;
1207     }
1208
1209     reply = pa_tagstruct_new(NULL, 0);
1210     assert(reply);
1211     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1212     pa_tagstruct_putu32(reply, tag);
1213     pa_tagstruct_puts(reply, PACKAGE_NAME);
1214     pa_tagstruct_puts(reply, PACKAGE_VERSION);
1215     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
1216     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
1217     pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
1218     pa_pstream_send_tagstruct(c->pstream, reply);
1219 }
1220
1221 static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
1222     struct pa_tagstruct *t;
1223     struct connection *c = userdata;
1224     assert(c && core);
1225
1226     t = pa_tagstruct_new(NULL, 0);
1227     assert(t);
1228     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
1229     pa_tagstruct_putu32(t, (uint32_t) -1);
1230     pa_tagstruct_putu32(t, e);
1231     pa_tagstruct_putu32(t, index);
1232     pa_pstream_send_tagstruct(c->pstream, t);
1233 }
1234
1235 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1236     struct connection *c = userdata;
1237     enum pa_subscription_mask m;
1238     assert(c && t);
1239
1240     if (pa_tagstruct_getu32(t, &m) < 0 ||
1241         !pa_tagstruct_eof(t)) {
1242         protocol_error(c);
1243         return;
1244     }
1245
1246     if (!c->authorized) {
1247         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1248         return;
1249     }
1250
1251     if (c->subscription)
1252         pa_subscription_free(c->subscription);
1253
1254     if (m != 0) {
1255         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
1256         assert(c->subscription);
1257     } else
1258         c->subscription = NULL;
1259
1260     pa_pstream_send_simple_ack(c->pstream, tag);
1261 }
1262
1263 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1264     struct connection *c = userdata;
1265     uint32_t index, volume;
1266     struct pa_sink *sink = NULL;
1267     struct pa_sink_input *si = NULL;
1268     const char *name = NULL;
1269     assert(c && t);
1270
1271     if (pa_tagstruct_getu32(t, &index) < 0 ||
1272         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
1273         pa_tagstruct_getu32(t, &volume) ||
1274         !pa_tagstruct_eof(t)) {
1275         protocol_error(c);
1276         return;
1277     }
1278
1279     if (!c->authorized) {
1280         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1281         return;
1282     }
1283
1284     if (command == PA_COMMAND_SET_SINK_VOLUME) {
1285         if (index != (uint32_t) -1)
1286             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1287         else
1288             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1289     }  else {
1290         assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
1291         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1292     }
1293
1294     if (!si && !sink) {
1295         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1296         return;
1297     }
1298
1299     if (sink)
1300         pa_sink_set_volume(sink, volume);
1301     else if (si)
1302         pa_sink_input_set_volume(si, volume);
1303
1304     pa_pstream_send_simple_ack(c->pstream, tag);
1305 }
1306
1307 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1308     struct connection *c = userdata;
1309     uint32_t index;
1310     uint32_t b;
1311     struct playback_stream *s;
1312     assert(c && t);
1313
1314     if (pa_tagstruct_getu32(t, &index) < 0 ||
1315         pa_tagstruct_getu32(t, &b) < 0 ||
1316         !pa_tagstruct_eof(t)) {
1317         protocol_error(c);
1318         return;
1319     }
1320
1321     if (!c->authorized) {
1322         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1323         return;
1324     }
1325
1326     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1327         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1328         return;
1329     }
1330
1331     pa_sink_input_cork(s->sink_input, b);
1332     pa_pstream_send_simple_ack(c->pstream, tag);
1333 }
1334
1335 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1336     struct connection *c = userdata;
1337     uint32_t index;
1338     struct playback_stream *s;
1339     assert(c && t);
1340
1341     if (pa_tagstruct_getu32(t, &index) < 0 ||
1342         !pa_tagstruct_eof(t)) {
1343         protocol_error(c);
1344         return;
1345     }
1346
1347     if (!c->authorized) {
1348         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1349         return;
1350     }
1351
1352     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1353         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1354         return;
1355     }
1356
1357     if (command == PA_COMMAND_TRIGGER_PLAYBACK_STREAM)
1358         pa_memblockq_prebuf_disable(s->memblockq);
1359     else {
1360         assert(command == PA_COMMAND_FLUSH_PLAYBACK_STREAM);
1361         pa_memblockq_flush(s->memblockq);
1362     }
1363
1364     pa_sink_notify(s->sink_input->sink);
1365     pa_pstream_send_simple_ack(c->pstream, tag);
1366 }
1367
1368 /*** pstream callbacks ***/
1369
1370 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
1371     struct connection *c = userdata;
1372     assert(p && packet && packet->data && c);
1373
1374     if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
1375         fprintf(stderr, "protocol-native: invalid packet.\n");
1376         connection_free(c);
1377     }
1378 }
1379
1380 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
1381     struct connection *c = userdata;
1382     struct output_stream *stream;
1383     assert(p && chunk && userdata);
1384
1385     if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
1386         fprintf(stderr, "protocol-native: client sent block for invalid stream.\n");
1387         connection_free(c);
1388         return;
1389     }
1390
1391     if (stream->type == PLAYBACK_STREAM) {
1392         struct playback_stream *p = (struct playback_stream*) stream;
1393         if (chunk->length >= p->requested_bytes)
1394             p->requested_bytes = 0;
1395         else
1396             p->requested_bytes -= chunk->length;
1397
1398         pa_memblockq_push_align(p->memblockq, chunk, delta);
1399         assert(p->sink_input);
1400         /*fprintf(stderr, "after_recv: %u\n", pa_memblockq_get_length(p->memblockq));*/
1401
1402         pa_sink_notify(p->sink_input->sink);
1403         /*fprintf(stderr, "Recieved %u bytes.\n", chunk->length);*/
1404
1405     } else {
1406         struct upload_stream *u = (struct upload_stream*) stream;
1407         size_t l;
1408         assert(u->type == UPLOAD_STREAM);
1409
1410         if (!u->memchunk.memblock) {
1411             if (u->length == chunk->length) {
1412                 u->memchunk = *chunk;
1413                 pa_memblock_ref(u->memchunk.memblock);
1414                 u->length = 0;
1415             } else {
1416                 u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
1417                 u->memchunk.index = u->memchunk.length = 0;
1418             }
1419         }
1420
1421         assert(u->memchunk.memblock);
1422
1423         l = u->length;
1424         if (l > chunk->length)
1425             l = chunk->length;
1426
1427         if (l > 0) {
1428             memcpy(u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length, chunk->memblock->data+chunk->index, l);
1429             u->memchunk.length += l;
1430             u->length -= l;
1431         }
1432     }
1433 }
1434
1435 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
1436     struct connection *c = userdata;
1437     assert(p && c);
1438     connection_free(c);
1439
1440     fprintf(stderr, "protocol-native: connection died.\n");
1441 }
1442
1443
1444 static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
1445     struct connection *c = userdata;
1446     assert(p && c);
1447
1448     send_memblock(c);
1449 }
1450
1451 /*** client callbacks ***/
1452
1453 static void client_kill_cb(struct pa_client *c) {
1454     assert(c && c->userdata);
1455     connection_free(c->userdata);
1456 }
1457
1458 /*** socket server callbacks ***/
1459
1460 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1461     struct pa_protocol_native *p = userdata;
1462     struct connection *c;
1463     assert(s && io && p);
1464
1465     c = pa_xmalloc(sizeof(struct connection));
1466     c->authorized = p->public;
1467     c->protocol = p;
1468     assert(p->core);
1469     c->client = pa_client_new(p->core, "NATIVE", "Client");
1470     assert(c->client);
1471     c->client->kill = client_kill_cb;
1472     c->client->userdata = c;
1473     c->client->owner = p->module;
1474
1475     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
1476     assert(c->pstream);
1477
1478     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
1479     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
1480     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
1481     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
1482
1483     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
1484     assert(c->pdispatch);
1485
1486     c->record_streams = pa_idxset_new(NULL, NULL);
1487     c->output_streams = pa_idxset_new(NULL, NULL);
1488     assert(c->record_streams && c->output_streams);
1489
1490     c->rrobin_index = PA_IDXSET_INVALID;
1491     c->subscription = NULL;
1492
1493     pa_idxset_put(p->connections, c, NULL);
1494 }
1495
1496 /*** module entry points ***/
1497
1498 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) {
1499     struct pa_protocol_native *p;
1500     uint32_t public;
1501     assert(core && server && ma);
1502
1503     if (pa_modargs_get_value_u32(ma, "public", &public) < 0) {
1504         fprintf(stderr, __FILE__": public= expects numeric argument.\n");
1505         return NULL;
1506     }
1507
1508     p = pa_xmalloc(sizeof(struct pa_protocol_native));
1509
1510     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
1511         pa_xfree(p);
1512         return NULL;
1513     }
1514
1515     p->module = m;
1516     p->public = public;
1517     p->server = server;
1518     p->core = core;
1519     p->connections = pa_idxset_new(NULL, NULL);
1520     assert(p->connections);
1521
1522     pa_socket_server_set_callback(p->server, on_connection, p);
1523
1524     return p;
1525 }
1526
1527 void pa_protocol_native_free(struct pa_protocol_native *p) {
1528     struct connection *c;
1529     assert(p);
1530
1531     while ((c = pa_idxset_first(p->connections, NULL)))
1532         connection_free(c);
1533     pa_idxset_free(p->connections, NULL, NULL);
1534     pa_socket_server_unref(p->server);
1535     pa_xfree(p);
1536 }