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