polyp/protocol-native.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <string.h>
  27 #include <stdio.h>
  28 #include <assert.h>
  29 #include <stdlib.h>
  30
  31 #include "protocol-native.h"
  32 #include "native-common.h"
  33 #include "packet.h"
  34 #include "client.h"
  35 #include "source-output.h"
  36 #include "sink-input.h"
  37 #include "pstream.h"
  38 #include "tagstruct.h"
  39 #include "pdispatch.h"
  40 #include "pstream-util.h"
  41 #include "authkey.h"
  42 #include "namereg.h"
  43 #include "scache.h"
  44 #include "xmalloc.h"
  45 #include "util.h"
  46 #include "subscribe.h"
  47 #include "log.h"
  48
  49 struct connection;
  50 struct pa_protocol_native;
  51
  52 struct record_stream {
  53     struct connection *connection;
  54     uint32_t index;
  55     struct pa_source_output *source_output;
  56     struct pa_memblockq *memblockq;
  57     size_t fragment_size;
  58 };
  59
  60 struct playback_stream {
  61     int type;
  62     struct connection *connection;
  63     uint32_t index;
  64     struct pa_sink_input *sink_input;
  65     struct pa_memblockq *memblockq;
  66     size_t requested_bytes;
  67     int drain_request;
  68     uint32_t drain_tag;
  69 };
  70
  71 struct upload_stream {
  72     int type;
  73     struct connection *connection;
  74     uint32_t index;
  75     struct pa_memchunk memchunk;
  76     size_t length;
  77     char *name;
  78     struct pa_sample_spec sample_spec;
  79 };
  80
  81 struct output_stream {
  82     int type;
  83 };
  84
  85 enum {
  86     UPLOAD_STREAM,
  87     PLAYBACK_STREAM
  88 };
  89
  90 struct connection {
  91     int authorized;
  92     struct pa_protocol_native *protocol;
  93     struct pa_client *client;
  94     struct pa_pstream *pstream;
  95     struct pa_pdispatch *pdispatch;
  96     struct pa_idxset *record_streams, *output_streams;
  97     uint32_t rrobin_index;
  98     struct pa_subscription *subscription;
  99 };
 100
 101 struct pa_protocol_native {
 102     struct pa_module *module;
 103     int public;
 104     struct pa_core *core;
 105     struct pa_socket_server *server;
 106     struct pa_idxset *connections;
 107     uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
 108 };
 109
 110 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
 111 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
 112 static void sink_input_kill_cb(struct pa_sink_input *i);
 113 static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i);
 114
 115 static void request_bytes(struct playback_stream*s);
 116
 117 static void source_output_kill_cb(struct pa_source_output *o);
 118 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
 119
 120 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 121 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 122 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 123 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 124 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 125 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 126 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 127 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 128 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 129 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 130 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 131 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 132 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 133 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 134 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 135 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 136 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 137 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 138 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 139 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 140 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 141 static void command_set_default_sink_or_source(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 142
 143 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
 144     [PA_COMMAND_ERROR] = { NULL },
 145     [PA_COMMAND_TIMEOUT] = { NULL },
 146     [PA_COMMAND_REPLY] = { NULL },
 147     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
 148     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_stream },
 149     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
 150     [PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
 151     [PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_stream },
 152     [PA_COMMAND_AUTH] = { command_auth },
 153     [PA_COMMAND_REQUEST] = { NULL },
 154     [PA_COMMAND_EXIT] = { command_exit },
 155     [PA_COMMAND_SET_NAME] = { command_set_name },
 156     [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
 157     [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
 158     [PA_COMMAND_STAT] = { command_stat },
 159     [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
 160     [PA_COMMAND_CREATE_UPLOAD_STREAM] = { command_create_upload_stream },
 161     [PA_COMMAND_DELETE_UPLOAD_STREAM] = { command_delete_stream },
 162     [PA_COMMAND_FINISH_UPLOAD_STREAM] = { command_finish_upload_stream },
 163     [PA_COMMAND_PLAY_SAMPLE] = { command_play_sample },
 164     [PA_COMMAND_REMOVE_SAMPLE] = { command_remove_sample },
 165     [PA_COMMAND_GET_SINK_INFO] = { command_get_info },
 166     [PA_COMMAND_GET_SOURCE_INFO] = { command_get_info },
 167     [PA_COMMAND_GET_CLIENT_INFO] = { command_get_info },
 168     [PA_COMMAND_GET_MODULE_INFO] = { command_get_info },
 169     [PA_COMMAND_GET_SINK_INPUT_INFO] = { command_get_info },
 170     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = { command_get_info },
 171     [PA_COMMAND_GET_SAMPLE_INFO] = { command_get_info },
 172     [PA_COMMAND_GET_SINK_INFO_LIST] = { command_get_info_list },
 173     [PA_COMMAND_GET_SOURCE_INFO_LIST] = { command_get_info_list },
 174     [PA_COMMAND_GET_MODULE_INFO_LIST] = { command_get_info_list },
 175     [PA_COMMAND_GET_CLIENT_INFO_LIST] = { command_get_info_list },
 176     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = { command_get_info_list },
 177     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = { command_get_info_list },
 178     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = { command_get_info_list },
 179     [PA_COMMAND_GET_SERVER_INFO] = { command_get_server_info },
 180     [PA_COMMAND_SUBSCRIBE] = { command_subscribe },
 181     [PA_COMMAND_SET_SINK_VOLUME] = { command_set_volume },
 182     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = { command_set_volume },
 183     [PA_COMMAND_CORK_PLAYBACK_STREAM] = { command_cork_playback_stream },
 184     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 185     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 186     [PA_COMMAND_SET_DEFAULT_SINK] = { command_set_default_sink_or_source },
 187     [PA_COMMAND_SET_DEFAULT_SOURCE] = { command_set_default_sink_or_source },
 188 };
 189
 190 /* structure management */
 191
 192 static struct upload_stream* upload_stream_new(struct connection *c, const struct pa_sample_spec *ss, const char *name, size_t length) {
 193     struct upload_stream *s;
 194     assert(c && ss && name && length);
 195
 196     s = pa_xmalloc(sizeof(struct upload_stream));
 197     s->type = UPLOAD_STREAM;
 198     s->connection = c;
 199     s->sample_spec = *ss;
 200     s->name = pa_xstrdup(name);
 201
 202     s->memchunk.memblock = NULL;
 203     s->memchunk.index = 0;
 204     s->memchunk.length = 0;
 205
 206     s->length = length;
 207
 208     pa_idxset_put(c->output_streams, s, &s->index);
 209     return s;
 210 }
 211
 212 static void upload_stream_free(struct upload_stream *o) {
 213     assert(o && o->connection);
 214
 215     pa_idxset_remove_by_data(o->connection->output_streams, o, NULL);
 216
 217     pa_xfree(o->name);
 218
 219     if (o->memchunk.memblock)
 220         pa_memblock_unref(o->memchunk.memblock);
 221
 222     pa_xfree(o);
 223 }
 224
 225 static struct record_stream* record_stream_new(struct connection *c, struct pa_source *source, const struct pa_sample_spec *ss, const char *name, size_t maxlength, size_t fragment_size) {
 226     struct record_stream *s;
 227     struct pa_source_output *source_output;
 228     size_t base;
 229     assert(c && source && ss && name && maxlength);
 230
 231     if (!(source_output = pa_source_output_new(source, name, ss)))
 232         return NULL;
 233
 234     s = pa_xmalloc(sizeof(struct record_stream));
 235     s->connection = c;
 236     s->source_output = source_output;
 237     s->source_output->push = source_output_push_cb;
 238     s->source_output->kill = source_output_kill_cb;
 239     s->source_output->userdata = s;
 240     s->source_output->owner = c->protocol->module;
 241     s->source_output->client = c->client;
 242
 243     s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_frame_size(ss), 0, 0, c->protocol->core->memblock_stat);
 244     assert(s->memblockq);
 245
 246     s->fragment_size = (fragment_size/base)*base;
 247     if (!s->fragment_size)
 248         s->fragment_size = base;
 249
 250     pa_idxset_put(c->record_streams, s, &s->index);
 251     return s;
 252 }
 253
 254 static void record_stream_free(struct record_stream* r) {
 255     assert(r && r->connection);
 256
 257     pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
 258     pa_source_output_free(r->source_output);
 259     pa_memblockq_free(r->memblockq);
 260     pa_xfree(r);
 261 }
 262
 263 static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, const struct pa_sample_spec *ss, const char *name,
 264                                                    size_t maxlength,
 265                                                    size_t tlength,
 266                                                    size_t prebuf,
 267                                                    size_t minreq) {
 268     struct playback_stream *s;
 269     struct pa_sink_input *sink_input;
 270     assert(c && sink && ss && name && maxlength);
 271
 272     if (!(sink_input = pa_sink_input_new(sink, name, ss)))
 273         return NULL;
 274
 275     s = pa_xmalloc(sizeof(struct playback_stream));
 276     s->type = PLAYBACK_STREAM;
 277     s->connection = c;
 278     s->sink_input = sink_input;
 279
 280     s->sink_input->peek = sink_input_peek_cb;
 281     s->sink_input->drop = sink_input_drop_cb;
 282     s->sink_input->kill = sink_input_kill_cb;
 283     s->sink_input->get_latency = sink_input_get_latency_cb;
 284     s->sink_input->userdata = s;
 285     s->sink_input->owner = c->protocol->module;
 286     s->sink_input->client = c->client;
 287
 288     s->memblockq = pa_memblockq_new(maxlength, tlength, pa_frame_size(ss), prebuf, minreq, c->protocol->core->memblock_stat);
 289     assert(s->memblockq);
 290
 291     s->requested_bytes = 0;
 292     s->drain_request = 0;
 293
 294     pa_idxset_put(c->output_streams, s, &s->index);
 295     return s;
 296 }
 297
 298 static void playback_stream_free(struct playback_stream* p) {
 299     assert(p && p->connection);
 300
 301     if (p->drain_request)
 302         pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
 303
 304     pa_idxset_remove_by_data(p->connection->output_streams, p, NULL);
 305     pa_sink_input_free(p->sink_input);
 306     pa_memblockq_free(p->memblockq);
 307     pa_xfree(p);
 308 }
 309
 310 static void connection_free(struct connection *c) {
 311     struct record_stream *r;
 312     struct output_stream *o;
 313     assert(c && c->protocol);
 314
 315     pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
 316     while ((r = pa_idxset_first(c->record_streams, NULL)))
 317         record_stream_free(r);
 318     pa_idxset_free(c->record_streams, NULL, NULL);
 319
 320     while ((o = pa_idxset_first(c->output_streams, NULL)))
 321         if (o->type == PLAYBACK_STREAM)
 322             playback_stream_free((struct playback_stream*) o);
 323         else
 324             upload_stream_free((struct upload_stream*) o);
 325     pa_idxset_free(c->output_streams, NULL, NULL);
 326
 327     pa_pdispatch_unref(c->pdispatch);
 328     pa_pstream_close(c->pstream);
 329     pa_pstream_unref(c->pstream);
 330     pa_client_free(c->client);
 331
 332     if (c->subscription)
 333         pa_subscription_free(c->subscription);
 334
 335     pa_xfree(c);
 336 }
 337
 338 static void request_bytes(struct playback_stream *s) {
 339     struct pa_tagstruct *t;
 340     size_t l;
 341     assert(s);
 342
 343     if (!(l = pa_memblockq_missing(s->memblockq)))
 344         return;
 345
 346     if (l <= s->requested_bytes)
 347         return;
 348
 349     l -= s->requested_bytes;
 350
 351     if (l < pa_memblockq_get_minreq(s->memblockq))
 352         return;
 353
 354     s->requested_bytes += l;
 355
 356     t = pa_tagstruct_new(NULL, 0);
 357     assert(t);
 358     pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 359     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 360     pa_tagstruct_putu32(t, s->index);
 361     pa_tagstruct_putu32(t, l);
 362     pa_pstream_send_tagstruct(s->connection->pstream, t);
 363
 364     /*pa_log(__FILE__": Requesting %u bytes\n", l);*/
 365 }
 366
 367 static void send_memblock(struct connection *c) {
 368     uint32_t start;
 369     struct record_stream *r;
 370
 371     start = PA_IDXSET_INVALID;
 372     for (;;) {
 373         struct pa_memchunk chunk;
 374
 375         if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
 376             return;
 377
 378         if (start == PA_IDXSET_INVALID)
 379             start = c->rrobin_index;
 380         else if (start == c->rrobin_index)
 381             return;
 382
 383         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
 384             struct pa_memchunk schunk = chunk;
 385
 386             if (schunk.length > r->fragment_size)
 387                 schunk.length = r->fragment_size;
 388
 389             pa_pstream_send_memblock(c->pstream, r->index, 0, &schunk);
 390             pa_memblockq_drop(r->memblockq, &chunk, schunk.length);
 391             pa_memblock_unref(schunk.memblock);
 392
 393             return;
 394         }
 395     }
 396 }
 397
 398 static void send_playback_stream_killed(struct playback_stream *p) {
 399     struct pa_tagstruct *t;
 400     assert(p);
 401
 402     t = pa_tagstruct_new(NULL, 0);
 403     assert(t);
 404     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
 405     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 406     pa_tagstruct_putu32(t, p->index);
 407     pa_pstream_send_tagstruct(p->connection->pstream, t);
 408 }
 409
 410 static void send_record_stream_killed(struct record_stream *r) {
 411     struct pa_tagstruct *t;
 412     assert(r);
 413
 414     t = pa_tagstruct_new(NULL, 0);
 415     assert(t);
 416     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 417     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 418     pa_tagstruct_putu32(t, r->index);
 419     pa_pstream_send_tagstruct(r->connection->pstream, t);
 420 }
 421
 422
 423 /*** sinkinput callbacks ***/
 424
 425 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
 426     struct playback_stream *s;
 427     assert(i && i->userdata && chunk);
 428     s = i->userdata;
 429
 430     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
 431         return -1;
 432
 433     return 0;
 434 }
 435
 436 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
 437     struct playback_stream *s;
 438     assert(i && i->userdata && length);
 439     s = i->userdata;
 440
 441     pa_memblockq_drop(s->memblockq, chunk, length);
 442     request_bytes(s);
 443
 444     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
 445         pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
 446         s->drain_request = 0;
 447     }
 448
 449     /*pa_log(__FILE__": after_drop: %u\n", pa_memblockq_get_length(s->memblockq));*/
 450 }
 451
 452 static void sink_input_kill_cb(struct pa_sink_input *i) {
 453     assert(i && i->userdata);
 454     send_playback_stream_killed((struct playback_stream *) i->userdata);
 455     playback_stream_free((struct playback_stream *) i->userdata);
 456 }
 457
 458 static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i) {
 459     struct playback_stream *s;
 460     assert(i && i->userdata);
 461     s = i->userdata;
 462
 463     /*pa_log(__FILE__": get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
 464
 465     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
 466 }
 467
 468 /*** source_output callbacks ***/
 469
 470 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
 471     struct record_stream *s;
 472     assert(o && o->userdata && chunk);
 473     s = o->userdata;
 474
 475     pa_memblockq_push_align(s->memblockq, chunk, 0);
 476     if (!pa_pstream_is_pending(s->connection->pstream))
 477         send_memblock(s->connection);
 478 }
 479
 480 static void source_output_kill_cb(struct pa_source_output *o) {
 481     assert(o && o->userdata);
 482     send_record_stream_killed((struct record_stream *) o->userdata);
 483     record_stream_free((struct record_stream *) o->userdata);
 484 }
 485
 486 /*** pdispatch callbacks ***/
 487
 488 static void protocol_error(struct connection *c) {
 489     pa_log(__FILE__": protocol error, kicking client\n");
 490     connection_free(c);
 491 }
 492
 493 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 494     struct connection *c = userdata;
 495     struct playback_stream *s;
 496     size_t maxlength, tlength, prebuf, minreq;
 497     uint32_t sink_index;
 498     const char *name, *sink_name;
 499     struct pa_sample_spec ss;
 500     struct pa_tagstruct *reply;
 501     struct pa_sink *sink;
 502     assert(c && t && c->protocol && c->protocol->core);
 503
 504     if (pa_tagstruct_gets(t, &name) < 0 ||
 505         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 506         pa_tagstruct_getu32(t, &sink_index) < 0 ||
 507         pa_tagstruct_gets(t, &sink_name) < 0 ||
 508         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 509         pa_tagstruct_getu32(t, &tlength) < 0 ||
 510         pa_tagstruct_getu32(t, &prebuf) < 0 ||
 511         pa_tagstruct_getu32(t, &minreq) < 0 ||
 512         !pa_tagstruct_eof(t)) {
 513         protocol_error(c);
 514         return;
 515     }
 516
 517     if (!c->authorized) {
 518         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 519         return;
 520     }
 521
 522     if (sink_index != (uint32_t) -1)
 523         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 524     else
 525         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 526
 527     if (!sink) {
 528         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 529         return;
 530     }
 531
 532     if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
 533         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 534         return;
 535     }
 536
 537     reply = pa_tagstruct_new(NULL, 0);
 538     assert(reply);
 539     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 540     pa_tagstruct_putu32(reply, tag);
 541     pa_tagstruct_putu32(reply, s->index);
 542     assert(s->sink_input);
 543     pa_tagstruct_putu32(reply, s->sink_input->index);
 544     pa_pstream_send_tagstruct(c->pstream, reply);
 545     request_bytes(s);
 546 }
 547
 548 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 549     struct connection *c = userdata;
 550     uint32_t channel;
 551     assert(c && t);
 552
 553     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 554         !pa_tagstruct_eof(t)) {
 555         protocol_error(c);
 556         return;
 557     }
 558
 559     if (!c->authorized) {
 560         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 561         return;
 562     }
 563
 564     if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
 565         struct playback_stream *s;
 566         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
 567             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 568             return;
 569         }
 570
 571         playback_stream_free(s);
 572     } else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
 573         struct record_stream *s;
 574         if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
 575             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 576             return;
 577         }
 578
 579         record_stream_free(s);
 580     } else {
 581         struct upload_stream *s;
 582         assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
 583         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 584             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 585             return;
 586         }
 587
 588         upload_stream_free(s);
 589     }
 590
 591     pa_pstream_send_simple_ack(c->pstream, tag);
 592 }
 593
 594 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 595     struct connection *c = userdata;
 596     struct record_stream *s;
 597     size_t maxlength, fragment_size;
 598     uint32_t source_index;
 599     const char *name, *source_name;
 600     struct pa_sample_spec ss;
 601     struct pa_tagstruct *reply;
 602     struct pa_source *source;
 603     assert(c && t && c->protocol && c->protocol->core);
 604
 605     if (pa_tagstruct_gets(t, &name) < 0 ||
 606         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 607         pa_tagstruct_getu32(t, &source_index) < 0 ||
 608         pa_tagstruct_gets(t, &source_name) < 0 ||
 609         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 610         pa_tagstruct_getu32(t, &fragment_size) < 0 ||
 611         !pa_tagstruct_eof(t)) {
 612         protocol_error(c);
 613         return;
 614     }
 615
 616     if (!c->authorized) {
 617         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 618         return;
 619     }
 620
 621     if (source_index != (uint32_t) -1)
 622         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
 623     else
 624         source = pa_namereg_get(c->protocol->core, *source_name ? source_name : NULL, PA_NAMEREG_SOURCE, 1);
 625
 626     if (!source) {
 627         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 628         return;
 629     }
 630
 631     if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
 632         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 633         return;
 634     }
 635
 636     reply = pa_tagstruct_new(NULL, 0);
 637     assert(reply);
 638     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 639     pa_tagstruct_putu32(reply, tag);
 640     pa_tagstruct_putu32(reply, s->index);
 641     assert(s->source_output);
 642     pa_tagstruct_putu32(reply, s->source_output->index);
 643     pa_pstream_send_tagstruct(c->pstream, reply);
 644 }
 645
 646 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 647     struct connection *c = userdata;
 648     assert(c && t);
 649
 650     if (!pa_tagstruct_eof(t)) {
 651         protocol_error(c);
 652         return;
 653     }
 654
 655     if (!c->authorized) {
 656         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 657         return;
 658     }
 659
 660     assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
 661     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
 662     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 663     return;
 664 }
 665
 666 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 667     struct connection *c = userdata;
 668     const void*cookie;
 669     assert(c && t);
 670
 671     if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
 672         !pa_tagstruct_eof(t)) {
 673         protocol_error(c);
 674         return;
 675     }
 676
 677     if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
 678         pa_log(__FILE__": Denied access to client with invalid authorization key.\n");
 679         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 680         return;
 681     }
 682
 683     c->authorized = 1;
 684     pa_pstream_send_simple_ack(c->pstream, tag);
 685     return;
 686 }
 687
 688 static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 689     struct connection *c = userdata;
 690     const char *name;
 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     pa_client_rename(c->client, name);
 700     pa_pstream_send_simple_ack(c->pstream, tag);
 701     return;
 702 }
 703
 704 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 705     struct connection *c = userdata;
 706     const char *name;
 707     uint32_t index = PA_IDXSET_INVALID;
 708     assert(c && t);
 709
 710     if (pa_tagstruct_gets(t, &name) < 0 ||
 711         !pa_tagstruct_eof(t)) {
 712         protocol_error(c);
 713         return;
 714     }
 715
 716     if (!c->authorized) {
 717         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 718         return;
 719     }
 720
 721     if (command == PA_COMMAND_LOOKUP_SINK) {
 722         struct pa_sink *sink;
 723         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
 724             index = sink->index;
 725     } else {
 726         struct pa_source *source;
 727         assert(command == PA_COMMAND_LOOKUP_SOURCE);
 728         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
 729             index = source->index;
 730     }
 731
 732     if (index == PA_IDXSET_INVALID)
 733         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 734     else {
 735         struct pa_tagstruct *reply;
 736         reply = pa_tagstruct_new(NULL, 0);
 737         assert(reply);
 738         pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 739         pa_tagstruct_putu32(reply, tag);
 740         pa_tagstruct_putu32(reply, index);
 741         pa_pstream_send_tagstruct(c->pstream, reply);
 742     }
 743 }
 744
 745 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 746     struct connection *c = userdata;
 747     uint32_t index;
 748     struct playback_stream *s;
 749     assert(c && t);
 750
 751     if (pa_tagstruct_getu32(t, &index) < 0 ||
 752         !pa_tagstruct_eof(t)) {
 753         protocol_error(c);
 754         return;
 755     }
 756
 757     if (!c->authorized) {
 758         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 759         return;
 760     }
 761
 762     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 763         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 764         return;
 765     }
 766
 767     s->drain_request = 0;
 768
 769     pa_memblockq_prebuf_disable(s->memblockq);
 770
 771     if (!pa_memblockq_is_readable(s->memblockq)) {
 772         pa_pstream_send_simple_ack(c->pstream, tag);
 773     } else {
 774         s->drain_request = 1;
 775         s->drain_tag = tag;
 776
 777         pa_sink_notify(s->sink_input->sink);
 778     }
 779 }
 780
 781 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 782     struct connection *c = userdata;
 783     struct pa_tagstruct *reply;
 784     assert(c && t);
 785
 786     if (!pa_tagstruct_eof(t)) {
 787         protocol_error(c);
 788         return;
 789     }
 790
 791     if (!c->authorized) {
 792         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 793         return;
 794     }
 795
 796     reply = pa_tagstruct_new(NULL, 0);
 797     assert(reply);
 798     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 799     pa_tagstruct_putu32(reply, tag);
 800     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
 801     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
 802     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
 803     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
 804     pa_tagstruct_putu32(reply, pa_scache_total_size(c->protocol->core));
 805     pa_pstream_send_tagstruct(c->pstream, reply);
 806 }
 807
 808 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 809     struct connection *c = userdata;
 810     struct pa_tagstruct *reply;
 811     struct playback_stream *s;
 812     uint32_t index;
 813     assert(c && t);
 814
 815     if (pa_tagstruct_getu32(t, &index) < 0 ||
 816         !pa_tagstruct_eof(t)) {
 817         protocol_error(c);
 818         return;
 819     }
 820
 821     if (!c->authorized) {
 822         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 823         return;
 824     }
 825
 826     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 827         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 828         return;
 829     }
 830
 831     reply = pa_tagstruct_new(NULL, 0);
 832     assert(reply);
 833     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 834     pa_tagstruct_putu32(reply, tag);
 835     pa_tagstruct_putu32(reply, pa_sink_input_get_latency(s->sink_input));
 836     pa_tagstruct_putu32(reply, pa_sink_get_latency(s->sink_input->sink));
 837     pa_tagstruct_put_boolean(reply, pa_memblockq_is_readable(s->memblockq));
 838     pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
 839     pa_pstream_send_tagstruct(c->pstream, reply);
 840 }
 841
 842 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 843     struct connection *c = userdata;
 844     struct upload_stream *s;
 845     size_t length;
 846     const char *name;
 847     struct pa_sample_spec ss;
 848     struct pa_tagstruct *reply;
 849     assert(c && t && c->protocol && c->protocol->core);
 850
 851     if (pa_tagstruct_gets(t, &name) < 0 ||
 852         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 853         pa_tagstruct_getu32(t, &length) < 0 ||
 854         !pa_tagstruct_eof(t)) {
 855         protocol_error(c);
 856         return;
 857     }
 858
 859     if (!c->authorized) {
 860         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 861         return;
 862     }
 863
 864     if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
 865         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 866         return;
 867     }
 868
 869     if (!(s = upload_stream_new(c, &ss, name, length))) {
 870         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 871         return;
 872     }
 873
 874     reply = pa_tagstruct_new(NULL, 0);
 875     assert(reply);
 876     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 877     pa_tagstruct_putu32(reply, tag);
 878     pa_tagstruct_putu32(reply, s->index);
 879     pa_pstream_send_tagstruct(c->pstream, reply);
 880
 881     reply = pa_tagstruct_new(NULL, 0);
 882     assert(reply);
 883     pa_tagstruct_putu32(reply, PA_COMMAND_REQUEST);
 884     pa_tagstruct_putu32(reply, (uint32_t) -1); /* tag */
 885     pa_tagstruct_putu32(reply, s->index);
 886     pa_tagstruct_putu32(reply, length);
 887     pa_pstream_send_tagstruct(c->pstream, reply);
 888 }
 889
 890 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 891     struct connection *c = userdata;
 892     uint32_t channel;
 893     struct upload_stream *s;
 894     uint32_t index;
 895     assert(c && t);
 896
 897     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 898         !pa_tagstruct_eof(t)) {
 899         protocol_error(c);
 900         return;
 901     }
 902
 903     if (!c->authorized) {
 904         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 905         return;
 906     }
 907
 908     if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 909         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 910         return;
 911     }
 912
 913     pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
 914     pa_pstream_send_simple_ack(c->pstream, tag);
 915     upload_stream_free(s);
 916 }
 917
 918 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 919     struct connection *c = userdata;
 920     uint32_t sink_index, volume;
 921     struct pa_sink *sink;
 922     const char *name, *sink_name;
 923     assert(c && t);
 924
 925     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
 926         pa_tagstruct_gets(t, &sink_name) < 0 ||
 927         pa_tagstruct_getu32(t, &volume) < 0 ||
 928         pa_tagstruct_gets(t, &name) < 0 ||
 929         !pa_tagstruct_eof(t)) {
 930         protocol_error(c);
 931         return;
 932     }
 933
 934     if (!c->authorized) {
 935         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 936         return;
 937     }
 938
 939     if (sink_index != (uint32_t) -1)
 940         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 941     else
 942         sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
 943
 944     if (!sink) {
 945         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 946         return;
 947     }
 948
 949     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
 950         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 951         return;
 952     }
 953
 954     pa_pstream_send_simple_ack(c->pstream, tag);
 955 }
 956
 957 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 958     struct connection *c = userdata;
 959     const char *name;
 960     assert(c && t);
 961
 962     if (pa_tagstruct_gets(t, &name) < 0 ||
 963         !pa_tagstruct_eof(t)) {
 964         protocol_error(c);
 965         return;
 966     }
 967
 968     if (!c->authorized) {
 969         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 970         return;
 971     }
 972
 973     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
 974         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 975         return;
 976     }
 977
 978     pa_pstream_send_simple_ack(c->pstream, tag);
 979 }
 980
 981 static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
 982     assert(t && sink);
 983     pa_tagstruct_putu32(t, sink->index);
 984     pa_tagstruct_puts(t, sink->name);
 985     pa_tagstruct_puts(t, sink->description ? sink->description : "");
 986     pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
 987     pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
 988     pa_tagstruct_putu32(t, sink->volume);
 989     pa_tagstruct_putu32(t, sink->monitor_source->index);
 990     pa_tagstruct_puts(t, sink->monitor_source->name);
 991     pa_tagstruct_putu32(t, pa_sink_get_latency(sink));
 992 }
 993
 994 static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
 995     assert(t && source);
 996     pa_tagstruct_putu32(t, source->index);
 997     pa_tagstruct_puts(t, source->name);
 998     pa_tagstruct_puts(t, source->description ? source->description : "");
 999     pa_tagstruct_put_sample_spec(t, &source->sample_spec);
1000     pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
1001     pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
1002     pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : "");
1003 }
1004
1005 static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
1006     assert(t && client);
1007     pa_tagstruct_putu32(t, client->index);
1008     pa_tagstruct_puts(t, client->name);
1009     pa_tagstruct_puts(t, client->protocol_name);
1010     pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
1011 }
1012
1013 static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
1014     assert(t && module);
1015     pa_tagstruct_putu32(t, module->index);
1016     pa_tagstruct_puts(t, module->name);
1017     pa_tagstruct_puts(t, module->argument ? module->argument : "");
1018     pa_tagstruct_putu32(t, module->n_used);
1019     pa_tagstruct_put_boolean(t, module->auto_unload);
1020 }
1021
1022 static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
1023     assert(t && s);
1024     pa_tagstruct_putu32(t, s->index);
1025     pa_tagstruct_puts(t, s->name ? s->name : "");
1026     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1027     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1028     pa_tagstruct_putu32(t, s->sink->index);
1029     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1030     pa_tagstruct_putu32(t, s->volume);
1031     pa_tagstruct_putu32(t, pa_sink_input_get_latency(s));
1032     pa_tagstruct_putu32(t, pa_sink_get_latency(s->sink));
1033 }
1034
1035 static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
1036     assert(t && s);
1037     pa_tagstruct_putu32(t, s->index);
1038     pa_tagstruct_puts(t, s->name ? s->name : "");
1039     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1040     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1041     pa_tagstruct_putu32(t, s->source->index);
1042     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1043 }
1044
1045 static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
1046     assert(t && e);
1047     pa_tagstruct_putu32(t, e->index);
1048     pa_tagstruct_puts(t, e->name);
1049     pa_tagstruct_putu32(t, e->volume);
1050     pa_tagstruct_putu32(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
1051     pa_tagstruct_put_sample_spec(t, &e->sample_spec);
1052     pa_tagstruct_putu32(t, e->memchunk.length);
1053 }
1054
1055 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1056     struct connection *c = userdata;
1057     uint32_t index;
1058     struct pa_sink *sink = NULL;
1059     struct pa_source *source = NULL;
1060     struct pa_client *client = NULL;
1061     struct pa_module *module = NULL;
1062     struct pa_sink_input *si = NULL;
1063     struct pa_source_output *so = NULL;
1064     struct pa_scache_entry *sce = NULL;
1065     const char *name;
1066     struct pa_tagstruct *reply;
1067     assert(c && t);
1068
1069
1070     if (pa_tagstruct_getu32(t, &index) < 0 ||
1071         (command != PA_COMMAND_GET_CLIENT_INFO &&
1072          command != PA_COMMAND_GET_MODULE_INFO &&
1073          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
1074          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
1075          pa_tagstruct_gets(t, &name) < 0) ||
1076         !pa_tagstruct_eof(t)) {
1077         protocol_error(c);
1078         return;
1079     }
1080
1081     if (!c->authorized) {
1082         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1083         return;
1084     }
1085
1086     if (command == PA_COMMAND_GET_SINK_INFO) {
1087         if (index != (uint32_t) -1)
1088             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1089         else
1090             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1091     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
1092         if (index != (uint32_t) -1)
1093             source = pa_idxset_get_by_index(c->protocol->core->sources, index);
1094         else
1095             source = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SOURCE, 1);
1096     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
1097         client = pa_idxset_get_by_index(c->protocol->core->clients, index);
1098     else if (command == PA_COMMAND_GET_MODULE_INFO)
1099         module = pa_idxset_get_by_index(c->protocol->core->modules, index);
1100     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
1101         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1102     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
1103         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
1104     else {
1105         assert(command == PA_COMMAND_GET_SAMPLE_INFO && name);
1106         if (index != (uint32_t) -1)
1107             sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
1108         else
1109             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
1110     }
1111
1112     if (!sink && !source && !client && !module && !si && !so && !sce) {
1113         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1114         return;
1115     }
1116
1117     reply = pa_tagstruct_new(NULL, 0);
1118     assert(reply);
1119     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1120     pa_tagstruct_putu32(reply, tag);
1121     if (sink)
1122         sink_fill_tagstruct(reply, sink);
1123     else if (source)
1124         source_fill_tagstruct(reply, source);
1125     else if (client)
1126         client_fill_tagstruct(reply, client);
1127     else if (module)
1128         module_fill_tagstruct(reply, module);
1129     else if (si)
1130         sink_input_fill_tagstruct(reply, si);
1131     else if (so)
1132         source_output_fill_tagstruct(reply, so);
1133     else
1134         scache_fill_tagstruct(reply, sce);
1135     pa_pstream_send_tagstruct(c->pstream, reply);
1136 }
1137
1138 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1139     struct connection *c = userdata;
1140     struct pa_idxset *i;
1141     uint32_t index;
1142     void *p;
1143     struct pa_tagstruct *reply;
1144     assert(c && t);
1145
1146     if (!pa_tagstruct_eof(t)) {
1147         protocol_error(c);
1148         return;
1149     }
1150
1151     if (!c->authorized) {
1152         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1153         return;
1154     }
1155
1156     reply = pa_tagstruct_new(NULL, 0);
1157     assert(reply);
1158     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1159     pa_tagstruct_putu32(reply, tag);
1160
1161     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1162         i = c->protocol->core->sinks;
1163     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1164         i = c->protocol->core->sources;
1165     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1166         i = c->protocol->core->clients;
1167     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1168         i = c->protocol->core->modules;
1169     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1170         i = c->protocol->core->sink_inputs;
1171     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1172         i = c->protocol->core->source_outputs;
1173     else {
1174         assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1175         i = c->protocol->core->scache;
1176     }
1177
1178     if (i) {
1179         for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
1180             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1181                 sink_fill_tagstruct(reply, p);
1182             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1183                 source_fill_tagstruct(reply, p);
1184             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1185                 client_fill_tagstruct(reply, p);
1186             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1187                 module_fill_tagstruct(reply, p);
1188             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1189                 sink_input_fill_tagstruct(reply, p);
1190             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1191                 source_output_fill_tagstruct(reply, p);
1192             else {
1193                 assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1194                 scache_fill_tagstruct(reply, p);
1195             }
1196         }
1197     }
1198
1199     pa_pstream_send_tagstruct(c->pstream, reply);
1200 }
1201
1202 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1203     struct connection *c = userdata;
1204     struct pa_tagstruct *reply;
1205     char txt[256];
1206     assert(c && t);
1207
1208     if (!pa_tagstruct_eof(t)) {
1209         protocol_error(c);
1210         return;
1211     }
1212
1213     if (!c->authorized) {
1214         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1215         return;
1216     }
1217
1218     reply = pa_tagstruct_new(NULL, 0);
1219     assert(reply);
1220     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1221     pa_tagstruct_putu32(reply, tag);
1222     pa_tagstruct_puts(reply, PACKAGE_NAME);
1223     pa_tagstruct_puts(reply, PACKAGE_VERSION);
1224     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
1225     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
1226     pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
1227     pa_tagstruct_puts(reply, c->protocol->core->default_sink_name ?  c->protocol->core->default_sink_name : "");
1228     pa_tagstruct_puts(reply, c->protocol->core->default_source_name ?  c->protocol->core->default_source_name : "");
1229     pa_pstream_send_tagstruct(c->pstream, reply);
1230 }
1231
1232 static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
1233     struct pa_tagstruct *t;
1234     struct connection *c = userdata;
1235     assert(c && core);
1236
1237     t = pa_tagstruct_new(NULL, 0);
1238     assert(t);
1239     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
1240     pa_tagstruct_putu32(t, (uint32_t) -1);
1241     pa_tagstruct_putu32(t, e);
1242     pa_tagstruct_putu32(t, index);
1243     pa_pstream_send_tagstruct(c->pstream, t);
1244 }
1245
1246 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1247     struct connection *c = userdata;
1248     enum pa_subscription_mask m;
1249     assert(c && t);
1250
1251     if (pa_tagstruct_getu32(t, &m) < 0 ||
1252         !pa_tagstruct_eof(t)) {
1253         protocol_error(c);
1254         return;
1255     }
1256
1257     if (!c->authorized) {
1258         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1259         return;
1260     }
1261
1262     if (c->subscription)
1263         pa_subscription_free(c->subscription);
1264
1265     if (m != 0) {
1266         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
1267         assert(c->subscription);
1268     } else
1269         c->subscription = NULL;
1270
1271     pa_pstream_send_simple_ack(c->pstream, tag);
1272 }
1273
1274 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1275     struct connection *c = userdata;
1276     uint32_t index, volume;
1277     struct pa_sink *sink = NULL;
1278     struct pa_sink_input *si = NULL;
1279     const char *name = NULL;
1280     assert(c && t);
1281
1282     if (pa_tagstruct_getu32(t, &index) < 0 ||
1283         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
1284         pa_tagstruct_getu32(t, &volume) ||
1285         !pa_tagstruct_eof(t)) {
1286         protocol_error(c);
1287         return;
1288     }
1289
1290     if (!c->authorized) {
1291         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1292         return;
1293     }
1294
1295     if (command == PA_COMMAND_SET_SINK_VOLUME) {
1296         if (index != (uint32_t) -1)
1297             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1298         else
1299             sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
1300     }  else {
1301         assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
1302         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1303     }
1304
1305     if (!si && !sink) {
1306         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1307         return;
1308     }
1309
1310     if (sink)
1311         pa_sink_set_volume(sink, volume);
1312     else if (si)
1313         pa_sink_input_set_volume(si, volume);
1314
1315     pa_pstream_send_simple_ack(c->pstream, tag);
1316 }
1317
1318 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1319     struct connection *c = userdata;
1320     uint32_t index;
1321     uint32_t b;
1322     struct playback_stream *s;
1323     assert(c && t);
1324
1325     if (pa_tagstruct_getu32(t, &index) < 0 ||
1326         pa_tagstruct_getu32(t, &b) < 0 ||
1327         !pa_tagstruct_eof(t)) {
1328         protocol_error(c);
1329         return;
1330     }
1331
1332     if (!c->authorized) {
1333         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1334         return;
1335     }
1336
1337     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1338         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1339         return;
1340     }
1341
1342     pa_sink_input_cork(s->sink_input, b);
1343     pa_pstream_send_simple_ack(c->pstream, tag);
1344 }
1345
1346 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1347     struct connection *c = userdata;
1348     uint32_t index;
1349     struct playback_stream *s;
1350     assert(c && t);
1351
1352     if (pa_tagstruct_getu32(t, &index) < 0 ||
1353         !pa_tagstruct_eof(t)) {
1354         protocol_error(c);
1355         return;
1356     }
1357
1358     if (!c->authorized) {
1359         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1360         return;
1361     }
1362
1363     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1364         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1365         return;
1366     }
1367
1368     if (command == PA_COMMAND_TRIGGER_PLAYBACK_STREAM)
1369         pa_memblockq_prebuf_disable(s->memblockq);
1370     else {
1371         assert(command == PA_COMMAND_FLUSH_PLAYBACK_STREAM);
1372         pa_memblockq_flush(s->memblockq);
1373         /*pa_log(__FILE__": flush: %u\n", pa_memblockq_get_length(s->memblockq));*/
1374     }
1375
1376     pa_sink_notify(s->sink_input->sink);
1377     pa_pstream_send_simple_ack(c->pstream, tag);
1378     request_bytes(s);
1379 }
1380
1381 static void command_set_default_sink_or_source(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1382     struct connection *c = userdata;
1383     uint32_t index;
1384     const char *s;
1385     assert(c && t);
1386
1387     if (pa_tagstruct_getu32(t, &index) < 0 ||
1388         pa_tagstruct_gets(t, &s) < 0 ||
1389         !pa_tagstruct_eof(t)) {
1390         protocol_error(c);
1391         return;
1392     }
1393
1394     if (!c->authorized) {
1395         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1396         return;
1397     }
1398
1399     pa_namereg_set_default(c->protocol->core, s, command == PA_COMMAND_SET_DEFAULT_SOURCE ? PA_NAMEREG_SOURCE : PA_NAMEREG_SINK);
1400     pa_pstream_send_simple_ack(c->pstream, tag);
1401 }
1402
1403 /*** pstream callbacks ***/
1404
1405 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
1406     struct connection *c = userdata;
1407     assert(p && packet && packet->data && c);
1408
1409     if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
1410         pa_log(__FILE__": invalid packet.\n");
1411         connection_free(c);
1412     }
1413 }
1414
1415 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
1416     struct connection *c = userdata;
1417     struct output_stream *stream;
1418     assert(p && chunk && userdata);
1419
1420     if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
1421         pa_log(__FILE__": client sent block for invalid stream.\n");
1422         connection_free(c);
1423         return;
1424     }
1425
1426     if (stream->type == PLAYBACK_STREAM) {
1427         struct playback_stream *p = (struct playback_stream*) stream;
1428         if (chunk->length >= p->requested_bytes)
1429             p->requested_bytes = 0;
1430         else
1431             p->requested_bytes -= chunk->length;
1432
1433         pa_memblockq_push_align(p->memblockq, chunk, delta);
1434         assert(p->sink_input);
1435         /*pa_log(__FILE__": after_recv: %u\n", pa_memblockq_get_length(p->memblockq));*/
1436
1437         pa_sink_notify(p->sink_input->sink);
1438         /*pa_log(__FILE__": Recieved %u bytes.\n", chunk->length);*/
1439
1440     } else {
1441         struct upload_stream *u = (struct upload_stream*) stream;
1442         size_t l;
1443         assert(u->type == UPLOAD_STREAM);
1444
1445         if (!u->memchunk.memblock) {
1446             if (u->length == chunk->length) {
1447                 u->memchunk = *chunk;
1448                 pa_memblock_ref(u->memchunk.memblock);
1449                 u->length = 0;
1450             } else {
1451                 u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
1452                 u->memchunk.index = u->memchunk.length = 0;
1453             }
1454         }
1455
1456         assert(u->memchunk.memblock);
1457
1458         l = u->length;
1459         if (l > chunk->length)
1460             l = chunk->length;
1461
1462         if (l > 0) {
1463             memcpy((uint8_t*) u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length,
1464                    (uint8_t*) chunk->memblock->data+chunk->index, l);
1465             u->memchunk.length += l;
1466             u->length -= l;
1467         }
1468     }
1469 }
1470
1471 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
1472     struct connection *c = userdata;
1473     assert(p && c);
1474     connection_free(c);
1475
1476 /*    pa_log(__FILE__": connection died.\n");*/
1477 }
1478
1479
1480 static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
1481     struct connection *c = userdata;
1482     assert(p && c);
1483
1484     send_memblock(c);
1485 }
1486
1487 /*** client callbacks ***/
1488
1489 static void client_kill_cb(struct pa_client *c) {
1490     assert(c && c->userdata);
1491     connection_free(c->userdata);
1492 }
1493
1494 /*** socket server callbacks ***/
1495
1496 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1497     struct pa_protocol_native *p = userdata;
1498     struct connection *c;
1499     assert(io && p);
1500
1501     c = pa_xmalloc(sizeof(struct connection));
1502     c->authorized = p->public;
1503     c->protocol = p;
1504     assert(p->core);
1505     c->client = pa_client_new(p->core, "NATIVE", "Client");
1506     assert(c->client);
1507     c->client->kill = client_kill_cb;
1508     c->client->userdata = c;
1509     c->client->owner = p->module;
1510
1511     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
1512     assert(c->pstream);
1513
1514     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
1515     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
1516     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
1517     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
1518
1519     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
1520     assert(c->pdispatch);
1521
1522     c->record_streams = pa_idxset_new(NULL, NULL);
1523     c->output_streams = pa_idxset_new(NULL, NULL);
1524     assert(c->record_streams && c->output_streams);
1525
1526     c->rrobin_index = PA_IDXSET_INVALID;
1527     c->subscription = NULL;
1528
1529     pa_idxset_put(p->connections, c, NULL);
1530 }
1531
1532 /*** module entry points ***/
1533
1534 static struct pa_protocol_native* protocol_new_internal(struct pa_core *c, struct pa_module *m, struct pa_modargs *ma) {
1535     struct pa_protocol_native *p;
1536     int public;
1537     assert(c && ma);
1538
1539     if (pa_modargs_get_value_boolean(ma, "public", &public) < 0) {
1540         pa_log(__FILE__": public= expects numeric argument.\n");
1541         return NULL;
1542     }
1543
1544     p = pa_xmalloc(sizeof(struct pa_protocol_native));
1545
1546     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
1547         pa_xfree(p);
1548         return NULL;
1549     }
1550
1551     p->module = m;
1552     p->public = public;
1553     p->server = NULL;
1554     p->core = c;
1555     p->connections = pa_idxset_new(NULL, NULL);
1556     assert(p->connections);
1557
1558     return p;
1559 }
1560
1561 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) {
1562     struct pa_protocol_native *p;
1563
1564     if (!(p = protocol_new_internal(core, m, ma)))
1565         return NULL;
1566
1567     p->server = server;
1568     pa_socket_server_set_callback(p->server, on_connection, p);
1569
1570     return p;
1571 }
1572
1573 void pa_protocol_native_free(struct pa_protocol_native *p) {
1574     struct connection *c;
1575     assert(p);
1576
1577     while ((c = pa_idxset_first(p->connections, NULL)))
1578         connection_free(c);
1579     pa_idxset_free(p->connections, NULL, NULL);
1580
1581     if (p->server)
1582         pa_socket_server_unref(p->server);
1583
1584     pa_xfree(p);
1585 }
1586
1587 struct pa_protocol_native* pa_protocol_native_new_iochannel(struct pa_core*core, struct pa_iochannel *io, struct pa_module *m, struct pa_modargs *ma) {
1588     struct pa_protocol_native *p;
1589
1590     if (!(p = protocol_new_internal(core, m, ma)))
1591         return NULL;
1592
1593     on_connection(NULL, io, p);
1594
1595     return p;
1596 }