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, 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
 139 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
 140     [PA_COMMAND_ERROR] = { NULL },
 141     [PA_COMMAND_TIMEOUT] = { NULL },
 142     [PA_COMMAND_REPLY] = { NULL },
 143     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
 144     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_stream },
 145     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
 146     [PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
 147     [PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_stream },
 148     [PA_COMMAND_AUTH] = { command_auth },
 149     [PA_COMMAND_REQUEST] = { NULL },
 150     [PA_COMMAND_EXIT] = { command_exit },
 151     [PA_COMMAND_SET_NAME] = { command_set_name },
 152     [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
 153     [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
 154     [PA_COMMAND_STAT] = { command_stat },
 155     [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
 156     [PA_COMMAND_CREATE_UPLOAD_STREAM] = { command_create_upload_stream },
 157     [PA_COMMAND_DELETE_UPLOAD_STREAM] = { command_delete_stream },
 158     [PA_COMMAND_FINISH_UPLOAD_STREAM] = { command_finish_upload_stream },
 159     [PA_COMMAND_PLAY_SAMPLE] = { command_play_sample },
 160     [PA_COMMAND_REMOVE_SAMPLE] = { command_remove_sample },
 161     [PA_COMMAND_GET_SINK_INFO] = { command_get_info },
 162     [PA_COMMAND_GET_SOURCE_INFO] = { command_get_info },
 163     [PA_COMMAND_GET_CLIENT_INFO] = { command_get_info },
 164     [PA_COMMAND_GET_MODULE_INFO] = { command_get_info },
 165     [PA_COMMAND_GET_SINK_INPUT_INFO] = { command_get_info },
 166     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = { command_get_info },
 167     [PA_COMMAND_GET_SAMPLE_INFO] = { command_get_info },
 168     [PA_COMMAND_GET_SINK_INFO_LIST] = { command_get_info_list },
 169     [PA_COMMAND_GET_SOURCE_INFO_LIST] = { command_get_info_list },
 170     [PA_COMMAND_GET_MODULE_INFO_LIST] = { command_get_info_list },
 171     [PA_COMMAND_GET_CLIENT_INFO_LIST] = { command_get_info_list },
 172     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = { command_get_info_list },
 173     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = { command_get_info_list },
 174     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = { command_get_info_list },
 175     [PA_COMMAND_GET_SERVER_INFO] = { command_get_server_info },
 176     [PA_COMMAND_SUBSCRIBE] = { command_subscribe },
 177     [PA_COMMAND_SET_SINK_VOLUME] = { command_set_volume },
 178     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = { command_set_volume },
 179 };
 180
 181 /* structure management */
 182
 183 static struct upload_stream* upload_stream_new(struct connection *c, const struct pa_sample_spec *ss, const char *name, size_t length) {
 184     struct upload_stream *s;
 185     assert(c && ss && name && length);
 186
 187     s = pa_xmalloc(sizeof(struct upload_stream));
 188     s->type = UPLOAD_STREAM;
 189     s->connection = c;
 190     s->sample_spec = *ss;
 191     s->name = pa_xstrdup(name);
 192
 193     s->memchunk.memblock = NULL;
 194     s->memchunk.index = 0;
 195     s->memchunk.length = 0;
 196
 197     s->length = length;
 198
 199     pa_idxset_put(c->output_streams, s, &s->index);
 200     return s;
 201 }
 202
 203 static void upload_stream_free(struct upload_stream *o) {
 204     assert(o && o->connection);
 205
 206     pa_idxset_remove_by_data(o->connection->output_streams, o, NULL);
 207
 208     pa_xfree(o->name);
 209
 210     if (o->memchunk.memblock)
 211         pa_memblock_unref(o->memchunk.memblock);
 212
 213     pa_xfree(o);
 214 }
 215
 216 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) {
 217     struct record_stream *s;
 218     struct pa_source_output *source_output;
 219     size_t base;
 220     assert(c && source && ss && name && maxlength);
 221
 222     if (!(source_output = pa_source_output_new(source, name, ss)))
 223         return NULL;
 224
 225     s = pa_xmalloc(sizeof(struct record_stream));
 226     s->connection = c;
 227     s->source_output = source_output;
 228     s->source_output->push = source_output_push_cb;
 229     s->source_output->kill = source_output_kill_cb;
 230     s->source_output->userdata = s;
 231     s->source_output->owner = c->protocol->module;
 232     s->source_output->client = c->client;
 233
 234     s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_frame_size(ss), 0, 0, c->protocol->core->memblock_stat);
 235     assert(s->memblockq);
 236
 237     s->fragment_size = (fragment_size/base)*base;
 238     if (!s->fragment_size)
 239         s->fragment_size = base;
 240
 241     pa_idxset_put(c->record_streams, s, &s->index);
 242     return s;
 243 }
 244
 245 static void record_stream_free(struct record_stream* r) {
 246     assert(r && r->connection);
 247
 248     pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
 249     pa_source_output_free(r->source_output);
 250     pa_memblockq_free(r->memblockq);
 251     pa_xfree(r);
 252 }
 253
 254 static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, const struct pa_sample_spec *ss, const char *name,
 255                                                    size_t maxlength,
 256                                                    size_t tlength,
 257                                                    size_t prebuf,
 258                                                    size_t minreq) {
 259     struct playback_stream *s;
 260     struct pa_sink_input *sink_input;
 261     assert(c && sink && ss && name && maxlength);
 262
 263     if (!(sink_input = pa_sink_input_new(sink, name, ss)))
 264         return NULL;
 265
 266     s = pa_xmalloc(sizeof(struct playback_stream));
 267     s->type = PLAYBACK_STREAM;
 268     s->connection = c;
 269     s->sink_input = sink_input;
 270
 271     s->sink_input->peek = sink_input_peek_cb;
 272     s->sink_input->drop = sink_input_drop_cb;
 273     s->sink_input->kill = sink_input_kill_cb;
 274     s->sink_input->get_latency = sink_input_get_latency_cb;
 275     s->sink_input->userdata = s;
 276     s->sink_input->owner = c->protocol->module;
 277     s->sink_input->client = c->client;
 278
 279     s->memblockq = pa_memblockq_new(maxlength, tlength, pa_frame_size(ss), prebuf, minreq, c->protocol->core->memblock_stat);
 280     assert(s->memblockq);
 281
 282     s->requested_bytes = 0;
 283     s->drain_request = 0;
 284
 285     pa_idxset_put(c->output_streams, s, &s->index);
 286     return s;
 287 }
 288
 289 static void playback_stream_free(struct playback_stream* p) {
 290     assert(p && p->connection);
 291
 292     if (p->drain_request)
 293         pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
 294
 295     pa_idxset_remove_by_data(p->connection->output_streams, p, NULL);
 296     pa_sink_input_free(p->sink_input);
 297     pa_memblockq_free(p->memblockq);
 298     pa_xfree(p);
 299 }
 300
 301 static void connection_free(struct connection *c) {
 302     struct record_stream *r;
 303     struct output_stream *o;
 304     assert(c && c->protocol);
 305
 306     pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
 307     while ((r = pa_idxset_first(c->record_streams, NULL)))
 308         record_stream_free(r);
 309     pa_idxset_free(c->record_streams, NULL, NULL);
 310
 311     while ((o = pa_idxset_first(c->output_streams, NULL)))
 312         if (o->type == PLAYBACK_STREAM)
 313             playback_stream_free((struct playback_stream*) o);
 314         else
 315             upload_stream_free((struct upload_stream*) o);
 316     pa_idxset_free(c->output_streams, NULL, NULL);
 317
 318     pa_pdispatch_unref(c->pdispatch);
 319     pa_pstream_close(c->pstream);
 320     pa_pstream_unref(c->pstream);
 321     pa_client_free(c->client);
 322
 323     if (c->subscription)
 324         pa_subscription_free(c->subscription);
 325
 326     pa_xfree(c);
 327 }
 328
 329 static void request_bytes(struct playback_stream *s) {
 330     struct pa_tagstruct *t;
 331     size_t l;
 332     assert(s);
 333
 334     if (!(l = pa_memblockq_missing(s->memblockq)))
 335         return;
 336
 337     if (l <= s->requested_bytes)
 338         return;
 339
 340     l -= s->requested_bytes;
 341
 342     if (l < pa_memblockq_get_minreq(s->memblockq))
 343         return;
 344
 345     s->requested_bytes += l;
 346
 347     t = pa_tagstruct_new(NULL, 0);
 348     assert(t);
 349     pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 350     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 351     pa_tagstruct_putu32(t, s->index);
 352     pa_tagstruct_putu32(t, l);
 353     pa_pstream_send_tagstruct(s->connection->pstream, t);
 354
 355     /*fprintf(stderr, "Requesting %u bytes\n", l);*/
 356 }
 357
 358 static void send_memblock(struct connection *c) {
 359     uint32_t start;
 360     struct record_stream *r;
 361
 362     start = PA_IDXSET_INVALID;
 363     for (;;) {
 364         struct pa_memchunk chunk;
 365
 366         if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
 367             return;
 368
 369         if (start == PA_IDXSET_INVALID)
 370             start = c->rrobin_index;
 371         else if (start == c->rrobin_index)
 372             return;
 373
 374         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
 375             if (chunk.length > r->fragment_size)
 376                 chunk.length = r->fragment_size;
 377
 378             pa_pstream_send_memblock(c->pstream, r->index, 0, &chunk);
 379             pa_memblockq_drop(r->memblockq, chunk.length);
 380             pa_memblock_unref(chunk.memblock);
 381
 382             return;
 383         }
 384     }
 385 }
 386
 387 static void send_playback_stream_killed(struct playback_stream *p) {
 388     struct pa_tagstruct *t;
 389     assert(p);
 390
 391     t = pa_tagstruct_new(NULL, 0);
 392     assert(t);
 393     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
 394     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 395     pa_tagstruct_putu32(t, p->index);
 396     pa_pstream_send_tagstruct(p->connection->pstream, t);
 397 }
 398
 399 static void send_record_stream_killed(struct record_stream *r) {
 400     struct pa_tagstruct *t;
 401     assert(r);
 402
 403     t = pa_tagstruct_new(NULL, 0);
 404     assert(t);
 405     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 406     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 407     pa_tagstruct_putu32(t, r->index);
 408     pa_pstream_send_tagstruct(r->connection->pstream, t);
 409 }
 410
 411
 412 /*** sinkinput callbacks ***/
 413
 414 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
 415     struct playback_stream *s;
 416     assert(i && i->userdata && chunk);
 417     s = i->userdata;
 418
 419     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
 420         return -1;
 421
 422     return 0;
 423 }
 424
 425 static void sink_input_drop_cb(struct pa_sink_input *i, size_t length) {
 426     struct playback_stream *s;
 427     assert(i && i->userdata && length);
 428     s = i->userdata;
 429
 430     pa_memblockq_drop(s->memblockq, length);
 431     request_bytes(s);
 432
 433     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
 434         pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
 435         s->drain_request = 0;
 436     }
 437 }
 438
 439 static void sink_input_kill_cb(struct pa_sink_input *i) {
 440     assert(i && i->userdata);
 441     send_playback_stream_killed((struct playback_stream *) i->userdata);
 442     playback_stream_free((struct playback_stream *) i->userdata);
 443 }
 444
 445 static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i) {
 446     struct playback_stream *s;
 447     assert(i && i->userdata);
 448     s = i->userdata;
 449
 450     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
 451 }
 452
 453 /*** source_output callbacks ***/
 454
 455 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
 456     struct record_stream *s;
 457     assert(o && o->userdata && chunk);
 458     s = o->userdata;
 459
 460     pa_memblockq_push(s->memblockq, chunk, 0);
 461     if (!pa_pstream_is_pending(s->connection->pstream))
 462         send_memblock(s->connection);
 463 }
 464
 465 static void source_output_kill_cb(struct pa_source_output *o) {
 466     assert(o && o->userdata);
 467     send_record_stream_killed((struct record_stream *) o->userdata);
 468     record_stream_free((struct record_stream *) o->userdata);
 469 }
 470
 471 /*** pdispatch callbacks ***/
 472
 473 static void protocol_error(struct connection *c) {
 474     fprintf(stderr, __FILE__": protocol error, kicking client\n");
 475     connection_free(c);
 476 }
 477
 478 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 479     struct connection *c = userdata;
 480     struct playback_stream *s;
 481     size_t maxlength, tlength, prebuf, minreq;
 482     uint32_t sink_index;
 483     const char *name, *sink_name;
 484     struct pa_sample_spec ss;
 485     struct pa_tagstruct *reply;
 486     struct pa_sink *sink;
 487     assert(c && t && c->protocol && c->protocol->core);
 488
 489     if (pa_tagstruct_gets(t, &name) < 0 ||
 490         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 491         pa_tagstruct_getu32(t, &sink_index) < 0 ||
 492         pa_tagstruct_gets(t, &sink_name) < 0 ||
 493         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 494         pa_tagstruct_getu32(t, &tlength) < 0 ||
 495         pa_tagstruct_getu32(t, &prebuf) < 0 ||
 496         pa_tagstruct_getu32(t, &minreq) < 0 ||
 497         !pa_tagstruct_eof(t)) {
 498         protocol_error(c);
 499         return;
 500     }
 501
 502     if (!c->authorized) {
 503         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 504         return;
 505     }
 506
 507     if (sink_index != (uint32_t) -1)
 508         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 509     else
 510         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 511
 512     if (!sink) {
 513         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 514         return;
 515     }
 516
 517     if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
 518         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 519         return;
 520     }
 521
 522     reply = pa_tagstruct_new(NULL, 0);
 523     assert(reply);
 524     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 525     pa_tagstruct_putu32(reply, tag);
 526     pa_tagstruct_putu32(reply, s->index);
 527     assert(s->sink_input);
 528     pa_tagstruct_putu32(reply, s->sink_input->index);
 529     pa_pstream_send_tagstruct(c->pstream, reply);
 530     request_bytes(s);
 531 }
 532
 533 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 534     struct connection *c = userdata;
 535     uint32_t channel;
 536     assert(c && t);
 537
 538     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 539         !pa_tagstruct_eof(t)) {
 540         protocol_error(c);
 541         return;
 542     }
 543
 544     if (!c->authorized) {
 545         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 546         return;
 547     }
 548
 549     if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
 550         struct playback_stream *s;
 551         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
 552             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 553             return;
 554         }
 555
 556         playback_stream_free(s);
 557     } else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
 558         struct record_stream *s;
 559         if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
 560             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 561             return;
 562         }
 563
 564         record_stream_free(s);
 565     } else {
 566         struct upload_stream *s;
 567         assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
 568         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 569             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 570             return;
 571         }
 572
 573         upload_stream_free(s);
 574     }
 575
 576     pa_pstream_send_simple_ack(c->pstream, tag);
 577 }
 578
 579 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 580     struct connection *c = userdata;
 581     struct record_stream *s;
 582     size_t maxlength, fragment_size;
 583     uint32_t source_index;
 584     const char *name, *source_name;
 585     struct pa_sample_spec ss;
 586     struct pa_tagstruct *reply;
 587     struct pa_source *source;
 588     assert(c && t && c->protocol && c->protocol->core);
 589
 590     if (pa_tagstruct_gets(t, &name) < 0 ||
 591         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 592         pa_tagstruct_getu32(t, &source_index) < 0 ||
 593         pa_tagstruct_gets(t, &source_name) < 0 ||
 594         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 595         pa_tagstruct_getu32(t, &fragment_size) < 0 ||
 596         !pa_tagstruct_eof(t)) {
 597         protocol_error(c);
 598         return;
 599     }
 600
 601     if (!c->authorized) {
 602         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 603         return;
 604     }
 605
 606     if (source_index != (uint32_t) -1)
 607         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
 608     else
 609         source = pa_namereg_get(c->protocol->core, *source_name ? source_name : NULL, PA_NAMEREG_SOURCE, 1);
 610
 611     if (!source) {
 612         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 613         return;
 614     }
 615
 616     if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
 617         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 618         return;
 619     }
 620
 621     reply = pa_tagstruct_new(NULL, 0);
 622     assert(reply);
 623     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 624     pa_tagstruct_putu32(reply, tag);
 625     pa_tagstruct_putu32(reply, s->index);
 626     assert(s->source_output);
 627     pa_tagstruct_putu32(reply, s->source_output->index);
 628     pa_pstream_send_tagstruct(c->pstream, reply);
 629 }
 630
 631 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 632     struct connection *c = userdata;
 633     assert(c && t);
 634
 635     if (!pa_tagstruct_eof(t)) {
 636         protocol_error(c);
 637         return;
 638     }
 639
 640     if (!c->authorized) {
 641         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 642         return;
 643     }
 644
 645     assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
 646     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
 647     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 648     return;
 649 }
 650
 651 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 652     struct connection *c = userdata;
 653     const void*cookie;
 654     assert(c && t);
 655
 656     if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
 657         !pa_tagstruct_eof(t)) {
 658         protocol_error(c);
 659         return;
 660     }
 661
 662     if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
 663         fprintf(stderr, "protocol-native.c: Denied access to client with invalid authorization key.\n");
 664         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 665         return;
 666     }
 667
 668     c->authorized = 1;
 669     pa_pstream_send_simple_ack(c->pstream, tag);
 670     return;
 671 }
 672
 673 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 674     struct connection *c = userdata;
 675     const char *name;
 676     assert(c && t);
 677
 678     if (pa_tagstruct_gets(t, &name) < 0 ||
 679         !pa_tagstruct_eof(t)) {
 680         protocol_error(c);
 681         return;
 682     }
 683
 684     pa_client_rename(c->client, name);
 685     pa_pstream_send_simple_ack(c->pstream, tag);
 686     return;
 687 }
 688
 689 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 690     struct connection *c = userdata;
 691     const char *name;
 692     uint32_t index = PA_IDXSET_INVALID;
 693     assert(c && t);
 694
 695     if (pa_tagstruct_gets(t, &name) < 0 ||
 696         !pa_tagstruct_eof(t)) {
 697         protocol_error(c);
 698         return;
 699     }
 700
 701     if (!c->authorized) {
 702         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 703         return;
 704     }
 705
 706     if (command == PA_COMMAND_LOOKUP_SINK) {
 707         struct pa_sink *sink;
 708         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
 709             index = sink->index;
 710     } else {
 711         struct pa_source *source;
 712         assert(command == PA_COMMAND_LOOKUP_SOURCE);
 713         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
 714             index = source->index;
 715     }
 716
 717     if (index == PA_IDXSET_INVALID)
 718         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 719     else {
 720         struct pa_tagstruct *reply;
 721         reply = pa_tagstruct_new(NULL, 0);
 722         assert(reply);
 723         pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 724         pa_tagstruct_putu32(reply, tag);
 725         pa_tagstruct_putu32(reply, index);
 726         pa_pstream_send_tagstruct(c->pstream, reply);
 727     }
 728 }
 729
 730 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 731     struct connection *c = userdata;
 732     uint32_t index;
 733     struct playback_stream *s;
 734     assert(c && t);
 735
 736     if (pa_tagstruct_getu32(t, &index) < 0 ||
 737         !pa_tagstruct_eof(t)) {
 738         protocol_error(c);
 739         return;
 740     }
 741
 742     if (!c->authorized) {
 743         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 744         return;
 745     }
 746
 747     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 748         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 749         return;
 750     }
 751
 752     s->drain_request = 0;
 753
 754     pa_memblockq_prebuf_disable(s->memblockq);
 755
 756     if (!pa_memblockq_is_readable(s->memblockq))
 757         pa_pstream_send_simple_ack(c->pstream, tag);
 758     else {
 759         s->drain_request = 1;
 760         s->drain_tag = tag;
 761
 762         pa_sink_notify(s->sink_input->sink);
 763     }
 764 }
 765
 766 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 767     struct connection *c = userdata;
 768     struct pa_tagstruct *reply;
 769     assert(c && t);
 770
 771     if (!pa_tagstruct_eof(t)) {
 772         protocol_error(c);
 773         return;
 774     }
 775
 776     if (!c->authorized) {
 777         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 778         return;
 779     }
 780
 781     reply = pa_tagstruct_new(NULL, 0);
 782     assert(reply);
 783     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 784     pa_tagstruct_putu32(reply, tag);
 785     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
 786     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
 787     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
 788     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
 789     pa_pstream_send_tagstruct(c->pstream, reply);
 790 }
 791
 792 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 793     struct connection *c = userdata;
 794     struct pa_tagstruct *reply;
 795     struct playback_stream *s;
 796     uint32_t index, latency;
 797     assert(c && t);
 798
 799     if (pa_tagstruct_getu32(t, &index) < 0 ||
 800         !pa_tagstruct_eof(t)) {
 801         protocol_error(c);
 802         return;
 803     }
 804
 805     if (!c->authorized) {
 806         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 807         return;
 808     }
 809
 810     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 811         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 812         return;
 813     }
 814
 815     latency = pa_sink_input_get_latency(s->sink_input);
 816     reply = pa_tagstruct_new(NULL, 0);
 817     assert(reply);
 818     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 819     pa_tagstruct_putu32(reply, tag);
 820     pa_tagstruct_putu32(reply, latency);
 821     pa_pstream_send_tagstruct(c->pstream, reply);
 822 }
 823
 824 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 825     struct connection *c = userdata;
 826     struct upload_stream *s;
 827     size_t length;
 828     const char *name;
 829     struct pa_sample_spec ss;
 830     struct pa_tagstruct *reply;
 831     assert(c && t && c->protocol && c->protocol->core);
 832
 833     if (pa_tagstruct_gets(t, &name) < 0 ||
 834         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 835         pa_tagstruct_getu32(t, &length) < 0 ||
 836         !pa_tagstruct_eof(t)) {
 837         protocol_error(c);
 838         return;
 839     }
 840
 841     if (!c->authorized) {
 842         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 843         return;
 844     }
 845
 846     if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
 847         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 848         return;
 849     }
 850
 851     if (!(s = upload_stream_new(c, &ss, name, length))) {
 852         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 853         return;
 854     }
 855
 856     reply = pa_tagstruct_new(NULL, 0);
 857     assert(reply);
 858     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 859     pa_tagstruct_putu32(reply, tag);
 860     pa_tagstruct_putu32(reply, s->index);
 861     pa_pstream_send_tagstruct(c->pstream, reply);
 862
 863     reply = pa_tagstruct_new(NULL, 0);
 864     assert(reply);
 865     pa_tagstruct_putu32(reply, PA_COMMAND_REQUEST);
 866     pa_tagstruct_putu32(reply, (uint32_t) -1); /* tag */
 867     pa_tagstruct_putu32(reply, s->index);
 868     pa_tagstruct_putu32(reply, length);
 869     pa_pstream_send_tagstruct(c->pstream, reply);
 870 }
 871
 872 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 873     struct connection *c = userdata;
 874     uint32_t channel;
 875     struct upload_stream *s;
 876     uint32_t index;
 877     assert(c && t);
 878
 879     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 880         !pa_tagstruct_eof(t)) {
 881         protocol_error(c);
 882         return;
 883     }
 884
 885     if (!c->authorized) {
 886         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 887         return;
 888     }
 889
 890     if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 891         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 892         return;
 893     }
 894
 895     pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
 896     pa_pstream_send_simple_ack(c->pstream, tag);
 897     upload_stream_free(s);
 898 }
 899
 900 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 901     struct connection *c = userdata;
 902     uint32_t sink_index, volume;
 903     struct pa_sink *sink;
 904     const char *name, *sink_name;
 905     assert(c && t);
 906
 907     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
 908         pa_tagstruct_gets(t, &sink_name) < 0 ||
 909         pa_tagstruct_getu32(t, &volume) < 0 ||
 910         pa_tagstruct_gets(t, &name) < 0 ||
 911         !pa_tagstruct_eof(t)) {
 912         protocol_error(c);
 913         return;
 914     }
 915
 916     if (!c->authorized) {
 917         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 918         return;
 919     }
 920
 921     if (sink_index != (uint32_t) -1)
 922         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 923     else
 924         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 925
 926     if (!sink) {
 927         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 928         return;
 929     }
 930
 931     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
 932         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 933         return;
 934     }
 935
 936     pa_pstream_send_simple_ack(c->pstream, tag);
 937 }
 938
 939 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 940     struct connection *c = userdata;
 941     const char *name;
 942     assert(c && t);
 943
 944     if (pa_tagstruct_gets(t, &name) < 0 ||
 945         !pa_tagstruct_eof(t)) {
 946         protocol_error(c);
 947         return;
 948     }
 949
 950     if (!c->authorized) {
 951         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 952         return;
 953     }
 954
 955     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
 956         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 957         return;
 958     }
 959
 960     pa_pstream_send_simple_ack(c->pstream, tag);
 961 }
 962
 963 static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
 964     assert(t && sink);
 965     pa_tagstruct_putu32(t, sink->index);
 966     pa_tagstruct_puts(t, sink->name);
 967     pa_tagstruct_puts(t, sink->description ? sink->description : "");
 968     pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
 969     pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
 970     pa_tagstruct_putu32(t, sink->volume);
 971     pa_tagstruct_putu32(t, sink->monitor_source->index);
 972     pa_tagstruct_puts(t, sink->monitor_source->name);
 973     pa_tagstruct_putu32(t, pa_sink_get_latency(sink));
 974 }
 975
 976 static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
 977     assert(t && source);
 978     pa_tagstruct_putu32(t, source->index);
 979     pa_tagstruct_puts(t, source->name);
 980     pa_tagstruct_puts(t, source->description ? source->description : "");
 981     pa_tagstruct_put_sample_spec(t, &source->sample_spec);
 982     pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
 983     pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
 984     pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : "");
 985 }
 986
 987 static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
 988     assert(t && client);
 989     pa_tagstruct_putu32(t, client->index);
 990     pa_tagstruct_puts(t, client->name);
 991     pa_tagstruct_puts(t, client->protocol_name);
 992     pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
 993 }
 994
 995 static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
 996     assert(t && module);
 997     pa_tagstruct_putu32(t, module->index);
 998     pa_tagstruct_puts(t, module->name);
 999     pa_tagstruct_puts(t, module->argument ? module->argument : "");
1000     pa_tagstruct_putu32(t, module->n_used);
1001     pa_tagstruct_putu32(t, module->auto_unload);
1002 }
1003
1004 static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
1005     assert(t && s);
1006     pa_tagstruct_putu32(t, s->index);
1007     pa_tagstruct_puts(t, s->name ? s->name : "");
1008     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1009     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1010     pa_tagstruct_putu32(t, s->sink->index);
1011     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1012     pa_tagstruct_putu32(t, s->volume);
1013     pa_tagstruct_putu32(t, pa_sink_input_get_latency(s));
1014 }
1015
1016 static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
1017     assert(t && s);
1018     pa_tagstruct_putu32(t, s->index);
1019     pa_tagstruct_puts(t, s->name ? s->name : "");
1020     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1021     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1022     pa_tagstruct_putu32(t, s->source->index);
1023     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1024 }
1025
1026 static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
1027     assert(t && e);
1028     pa_tagstruct_putu32(t, e->index);
1029     pa_tagstruct_puts(t, e->name);
1030     pa_tagstruct_putu32(t, e->volume);
1031     pa_tagstruct_putu32(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
1032     pa_tagstruct_put_sample_spec(t, &e->sample_spec);
1033 }
1034
1035 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1036     struct connection *c = userdata;
1037     uint32_t index;
1038     struct pa_sink *sink = NULL;
1039     struct pa_source *source = NULL;
1040     struct pa_client *client = NULL;
1041     struct pa_module *module = NULL;
1042     struct pa_sink_input *si = NULL;
1043     struct pa_source_output *so = NULL;
1044     struct pa_scache_entry *sce = NULL;
1045     const char *name;
1046     struct pa_tagstruct *reply;
1047     assert(c && t);
1048
1049
1050     if (pa_tagstruct_getu32(t, &index) < 0 ||
1051         (command != PA_COMMAND_GET_CLIENT_INFO &&
1052          command != PA_COMMAND_GET_MODULE_INFO &&
1053          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
1054          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
1055          pa_tagstruct_gets(t, &name) < 0) ||
1056         !pa_tagstruct_eof(t)) {
1057         protocol_error(c);
1058         return;
1059     }
1060
1061     if (!c->authorized) {
1062         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1063         return;
1064     }
1065
1066     if (command == PA_COMMAND_GET_SINK_INFO) {
1067         if (index != (uint32_t) -1)
1068             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1069         else
1070             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1071     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
1072         if (index != (uint32_t) -1)
1073             source = pa_idxset_get_by_index(c->protocol->core->sources, index);
1074         else
1075             source = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SOURCE, 1);
1076     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
1077         client = pa_idxset_get_by_index(c->protocol->core->clients, index);
1078     else if (command == PA_COMMAND_GET_MODULE_INFO)
1079         module = pa_idxset_get_by_index(c->protocol->core->modules, index);
1080     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
1081         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1082     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
1083         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
1084     else {
1085         assert(command == PA_COMMAND_GET_SAMPLE_INFO && name);
1086         if (index != (uint32_t) -1)
1087             sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
1088         else
1089             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
1090     }
1091
1092     if (!sink && !source && !client && !module && !si && !so && !sce) {
1093         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1094         return;
1095     }
1096
1097     reply = pa_tagstruct_new(NULL, 0);
1098     assert(reply);
1099     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1100     pa_tagstruct_putu32(reply, tag);
1101     if (sink)
1102         sink_fill_tagstruct(reply, sink);
1103     else if (source)
1104         source_fill_tagstruct(reply, source);
1105     else if (client)
1106         client_fill_tagstruct(reply, client);
1107     else if (module)
1108         module_fill_tagstruct(reply, module);
1109     else if (si)
1110         sink_input_fill_tagstruct(reply, si);
1111     else if (so)
1112         source_output_fill_tagstruct(reply, so);
1113     else
1114         scache_fill_tagstruct(reply, sce);
1115     pa_pstream_send_tagstruct(c->pstream, reply);
1116 }
1117
1118 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1119     struct connection *c = userdata;
1120     struct pa_idxset *i;
1121     uint32_t index;
1122     void *p;
1123     struct pa_tagstruct *reply;
1124     assert(c && t);
1125
1126     if (!pa_tagstruct_eof(t)) {
1127         protocol_error(c);
1128         return;
1129     }
1130
1131     if (!c->authorized) {
1132         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1133         return;
1134     }
1135
1136     reply = pa_tagstruct_new(NULL, 0);
1137     assert(reply);
1138     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1139     pa_tagstruct_putu32(reply, tag);
1140
1141     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1142         i = c->protocol->core->sinks;
1143     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1144         i = c->protocol->core->sources;
1145     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1146         i = c->protocol->core->clients;
1147     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1148         i = c->protocol->core->modules;
1149     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1150         i = c->protocol->core->sink_inputs;
1151     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1152         i = c->protocol->core->source_outputs;
1153     else {
1154         assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1155         i = c->protocol->core->scache;
1156     }
1157
1158     for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
1159         if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1160             sink_fill_tagstruct(reply, p);
1161         else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1162             source_fill_tagstruct(reply, p);
1163         else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1164             client_fill_tagstruct(reply, p);
1165         else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1166             module_fill_tagstruct(reply, p);
1167         else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1168             sink_input_fill_tagstruct(reply, p);
1169         else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1170             source_output_fill_tagstruct(reply, p);
1171         else {
1172             assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1173             scache_fill_tagstruct(reply, p);
1174         }
1175     }
1176
1177     pa_pstream_send_tagstruct(c->pstream, reply);
1178 }
1179
1180 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1181     struct connection *c = userdata;
1182     struct pa_tagstruct *reply;
1183     char txt[256];
1184     assert(c && t);
1185
1186     if (!pa_tagstruct_eof(t)) {
1187         protocol_error(c);
1188         return;
1189     }
1190
1191     if (!c->authorized) {
1192         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1193         return;
1194     }
1195
1196     reply = pa_tagstruct_new(NULL, 0);
1197     assert(reply);
1198     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1199     pa_tagstruct_putu32(reply, tag);
1200     pa_tagstruct_puts(reply, PACKAGE_NAME);
1201     pa_tagstruct_puts(reply, PACKAGE_VERSION);
1202     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
1203     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
1204     pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
1205     pa_pstream_send_tagstruct(c->pstream, reply);
1206 }
1207
1208 static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
1209     struct pa_tagstruct *t;
1210     struct connection *c = userdata;
1211     assert(c && core);
1212
1213     t = pa_tagstruct_new(NULL, 0);
1214     assert(t);
1215     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
1216     pa_tagstruct_putu32(t, (uint32_t) -1);
1217     pa_tagstruct_putu32(t, e);
1218     pa_tagstruct_putu32(t, index);
1219     pa_pstream_send_tagstruct(c->pstream, t);
1220 }
1221
1222 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1223     struct connection *c = userdata;
1224     enum pa_subscription_mask m;
1225     assert(c && t);
1226
1227     if (pa_tagstruct_getu32(t, &m) < 0 ||
1228         !pa_tagstruct_eof(t)) {
1229         protocol_error(c);
1230         return;
1231     }
1232
1233     if (!c->authorized) {
1234         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1235         return;
1236     }
1237
1238     if (c->subscription)
1239         pa_subscription_free(c->subscription);
1240
1241     if (m != 0) {
1242         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
1243         assert(c->subscription);
1244     } else
1245         c->subscription = NULL;
1246
1247     pa_pstream_send_simple_ack(c->pstream, tag);
1248 }
1249
1250 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1251     struct connection *c = userdata;
1252     uint32_t index, volume;
1253     struct pa_sink *sink = NULL;
1254     struct pa_sink_input *si = NULL;
1255     const char *name = NULL;
1256     assert(c && t);
1257
1258     if (pa_tagstruct_getu32(t, &index) < 0 ||
1259         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
1260         pa_tagstruct_getu32(t, &volume) ||
1261         !pa_tagstruct_eof(t)) {
1262         protocol_error(c);
1263         return;
1264     }
1265
1266     if (!c->authorized) {
1267         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1268         return;
1269     }
1270
1271     if (command == PA_COMMAND_SET_SINK_VOLUME) {
1272         if (index != (uint32_t) -1)
1273             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1274         else
1275             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1276     }  else {
1277         assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
1278         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1279     }
1280
1281     if (!si && !sink) {
1282         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1283         return;
1284     }
1285
1286     if (sink)
1287         pa_sink_set_volume(sink, volume);
1288     else if (si)
1289         pa_sink_input_set_volume(si, volume);
1290
1291     pa_pstream_send_simple_ack(c->pstream, tag);
1292 }
1293
1294
1295 /*** pstream callbacks ***/
1296
1297 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
1298     struct connection *c = userdata;
1299     assert(p && packet && packet->data && c);
1300
1301     if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
1302         fprintf(stderr, "protocol-native: invalid packet.\n");
1303         connection_free(c);
1304     }
1305 }
1306
1307 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk, void *userdata) {
1308     struct connection *c = userdata;
1309     struct output_stream *stream;
1310     assert(p && chunk && userdata);
1311
1312     if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
1313         fprintf(stderr, "protocol-native: client sent block for invalid stream.\n");
1314         connection_free(c);
1315         return;
1316     }
1317
1318     if (stream->type == PLAYBACK_STREAM) {
1319         struct playback_stream *p = (struct playback_stream*) stream;
1320         if (chunk->length >= p->requested_bytes)
1321             p->requested_bytes = 0;
1322         else
1323             p->requested_bytes -= chunk->length;
1324
1325         pa_memblockq_push_align(p->memblockq, chunk, delta);
1326         assert(p->sink_input);
1327         pa_sink_notify(p->sink_input->sink);
1328         /*fprintf(stderr, "Recieved %u bytes.\n", chunk->length);*/
1329     } else {
1330         struct upload_stream *u = (struct upload_stream*) stream;
1331         size_t l;
1332         assert(u->type == UPLOAD_STREAM);
1333
1334         if (!u->memchunk.memblock) {
1335             if (u->length == chunk->length) {
1336                 u->memchunk = *chunk;
1337                 pa_memblock_ref(u->memchunk.memblock);
1338                 u->length = 0;
1339                 fprintf(stderr, "COPY\n");
1340             } else {
1341                 u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
1342                 u->memchunk.index = u->memchunk.length = 0;
1343             }
1344         }
1345
1346         assert(u->memchunk.memblock);
1347
1348         l = u->length;
1349         if (l > chunk->length)
1350             l = chunk->length;
1351
1352         if (l > 0) {
1353             memcpy(u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length, chunk->memblock->data+chunk->index, l);
1354             u->memchunk.length += l;
1355             u->length -= l;
1356         }
1357     }
1358 }
1359
1360 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
1361     struct connection *c = userdata;
1362     assert(p && c);
1363     connection_free(c);
1364
1365     fprintf(stderr, "protocol-native: connection died.\n");
1366 }
1367
1368
1369 static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
1370     struct connection *c = userdata;
1371     assert(p && c);
1372
1373     send_memblock(c);
1374 }
1375
1376 /*** client callbacks ***/
1377
1378 static void client_kill_cb(struct pa_client *c) {
1379     assert(c && c->userdata);
1380     connection_free(c->userdata);
1381 }
1382
1383 /*** socket server callbacks ***/
1384
1385 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1386     struct pa_protocol_native *p = userdata;
1387     struct connection *c;
1388     assert(s && io && p);
1389
1390     c = pa_xmalloc(sizeof(struct connection));
1391     c->authorized = p->public;
1392     c->protocol = p;
1393     assert(p->core);
1394     c->client = pa_client_new(p->core, "NATIVE", "Client");
1395     assert(c->client);
1396     c->client->kill = client_kill_cb;
1397     c->client->userdata = c;
1398     c->client->owner = p->module;
1399
1400     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
1401     assert(c->pstream);
1402
1403     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
1404     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
1405     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
1406     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
1407
1408     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
1409     assert(c->pdispatch);
1410
1411     c->record_streams = pa_idxset_new(NULL, NULL);
1412     c->output_streams = pa_idxset_new(NULL, NULL);
1413     assert(c->record_streams && c->output_streams);
1414
1415     c->rrobin_index = PA_IDXSET_INVALID;
1416     c->subscription = NULL;
1417
1418     pa_idxset_put(p->connections, c, NULL);
1419 }
1420
1421 /*** module entry points ***/
1422
1423 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) {
1424     struct pa_protocol_native *p;
1425     uint32_t public;
1426     assert(core && server && ma);
1427
1428     if (pa_modargs_get_value_u32(ma, "public", &public) < 0) {
1429         fprintf(stderr, __FILE__": public= expects numeric argument.\n");
1430         return NULL;
1431     }
1432
1433     p = pa_xmalloc(sizeof(struct pa_protocol_native));
1434
1435     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
1436         pa_xfree(p);
1437         return NULL;
1438     }
1439
1440     p->module = m;
1441     p->public = public;
1442     p->server = server;
1443     p->core = core;
1444     p->connections = pa_idxset_new(NULL, NULL);
1445     assert(p->connections);
1446
1447     pa_socket_server_set_callback(p->server, on_connection, p);
1448
1449     return p;
1450 }
1451
1452 void pa_protocol_native_free(struct pa_protocol_native *p) {
1453     struct connection *c;
1454     assert(p);
1455
1456     while ((c = pa_idxset_first(p->connections, NULL)))
1457         connection_free(c);
1458     pa_idxset_free(p->connections, NULL, NULL);
1459     pa_socket_server_unref(p->server);
1460     pa_xfree(p);
1461 }