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 #include "autoload.h"
  49
  50 struct connection;
  51 struct pa_protocol_native;
  52
  53 struct record_stream {
  54     struct connection *connection;
  55     uint32_t index;
  56     struct pa_source_output *source_output;
  57     struct pa_memblockq *memblockq;
  58     size_t fragment_size;
  59 };
  60
  61 struct playback_stream {
  62     int type;
  63     struct connection *connection;
  64     uint32_t index;
  65     struct pa_sink_input *sink_input;
  66     struct pa_memblockq *memblockq;
  67     size_t requested_bytes;
  68     int drain_request;
  69     uint32_t drain_tag;
  70 };
  71
  72 struct upload_stream {
  73     int type;
  74     struct connection *connection;
  75     uint32_t index;
  76     struct pa_memchunk memchunk;
  77     size_t length;
  78     char *name;
  79     struct pa_sample_spec sample_spec;
  80 };
  81
  82 struct output_stream {
  83     int type;
  84 };
  85
  86 enum {
  87     UPLOAD_STREAM,
  88     PLAYBACK_STREAM
  89 };
  90
  91 struct connection {
  92     int authorized;
  93     struct pa_protocol_native *protocol;
  94     struct pa_client *client;
  95     struct pa_pstream *pstream;
  96     struct pa_pdispatch *pdispatch;
  97     struct pa_idxset *record_streams, *output_streams;
  98     uint32_t rrobin_index;
  99     struct pa_subscription *subscription;
 100 };
 101
 102 struct pa_protocol_native {
 103     struct pa_module *module;
 104     int public;
 105     struct pa_core *core;
 106     struct pa_socket_server *server;
 107     struct pa_idxset *connections;
 108     uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
 109 };
 110
 111 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
 112 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
 113 static void sink_input_kill_cb(struct pa_sink_input *i);
 114 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i);
 115
 116 static void request_bytes(struct playback_stream*s);
 117
 118 static void source_output_kill_cb(struct pa_source_output *o);
 119 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
 120 static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o);
 121
 122 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 123 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 124 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 125 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 126 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 127 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 128 static void command_set_client_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 129 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 130 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 131 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 132 static void command_get_record_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 133 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 134 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 135 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 136 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 137 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 138 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 139 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 140 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 141 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 142 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 143 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 144 static void command_set_default_sink_or_source(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 145 static void command_set_stream_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 146 static void command_kill(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 147 static void command_load_module(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 148 static void command_unload_module(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 149 static void command_add_autoload(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 150 static void command_remove_autoload(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 151 static void command_get_autoload_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 152 static void command_get_autoload_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 153 static void command_cork_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 154 static void command_flush_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
 155
 156 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
 157     [PA_COMMAND_ERROR] = { NULL },
 158     [PA_COMMAND_TIMEOUT] = { NULL },
 159     [PA_COMMAND_REPLY] = { NULL },
 160     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
 161     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_stream },
 162     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
 163     [PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
 164     [PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_stream },
 165     [PA_COMMAND_AUTH] = { command_auth },
 166     [PA_COMMAND_REQUEST] = { NULL },
 167     [PA_COMMAND_EXIT] = { command_exit },
 168     [PA_COMMAND_SET_CLIENT_NAME] = { command_set_client_name },
 169     [PA_COMMAND_LOOKUP_SINK] = { command_lookup },
 170     [PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
 171     [PA_COMMAND_STAT] = { command_stat },
 172     [PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
 173     [PA_COMMAND_GET_RECORD_LATENCY] = { command_get_record_latency },
 174     [PA_COMMAND_CREATE_UPLOAD_STREAM] = { command_create_upload_stream },
 175     [PA_COMMAND_DELETE_UPLOAD_STREAM] = { command_delete_stream },
 176     [PA_COMMAND_FINISH_UPLOAD_STREAM] = { command_finish_upload_stream },
 177     [PA_COMMAND_PLAY_SAMPLE] = { command_play_sample },
 178     [PA_COMMAND_REMOVE_SAMPLE] = { command_remove_sample },
 179     [PA_COMMAND_GET_SINK_INFO] = { command_get_info },
 180     [PA_COMMAND_GET_SOURCE_INFO] = { command_get_info },
 181     [PA_COMMAND_GET_CLIENT_INFO] = { command_get_info },
 182     [PA_COMMAND_GET_MODULE_INFO] = { command_get_info },
 183     [PA_COMMAND_GET_SINK_INPUT_INFO] = { command_get_info },
 184     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = { command_get_info },
 185     [PA_COMMAND_GET_SAMPLE_INFO] = { command_get_info },
 186     [PA_COMMAND_GET_SINK_INFO_LIST] = { command_get_info_list },
 187     [PA_COMMAND_GET_SOURCE_INFO_LIST] = { command_get_info_list },
 188     [PA_COMMAND_GET_MODULE_INFO_LIST] = { command_get_info_list },
 189     [PA_COMMAND_GET_CLIENT_INFO_LIST] = { command_get_info_list },
 190     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = { command_get_info_list },
 191     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = { command_get_info_list },
 192     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = { command_get_info_list },
 193     [PA_COMMAND_GET_SERVER_INFO] = { command_get_server_info },
 194     [PA_COMMAND_SUBSCRIBE] = { command_subscribe },
 195
 196     [PA_COMMAND_SET_SINK_VOLUME] = { command_set_volume },
 197     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = { command_set_volume },
 198
 199     [PA_COMMAND_CORK_PLAYBACK_STREAM] = { command_cork_playback_stream },
 200     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 201     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 202     [PA_COMMAND_PREBUF_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
 203
 204     [PA_COMMAND_CORK_RECORD_STREAM] = { command_cork_record_stream },
 205     [PA_COMMAND_FLUSH_RECORD_STREAM] = { command_flush_record_stream },
 206
 207     [PA_COMMAND_SET_DEFAULT_SINK] = { command_set_default_sink_or_source },
 208     [PA_COMMAND_SET_DEFAULT_SOURCE] = { command_set_default_sink_or_source },
 209     [PA_COMMAND_SET_PLAYBACK_STREAM_NAME] = { command_set_stream_name },
 210     [PA_COMMAND_SET_RECORD_STREAM_NAME] = { command_set_stream_name },
 211     [PA_COMMAND_KILL_CLIENT] = { command_kill },
 212     [PA_COMMAND_KILL_SINK_INPUT] = { command_kill },
 213     [PA_COMMAND_KILL_SOURCE_OUTPUT] = { command_kill },
 214     [PA_COMMAND_LOAD_MODULE] = { command_load_module },
 215     [PA_COMMAND_UNLOAD_MODULE] = { command_unload_module },
 216     [PA_COMMAND_GET_AUTOLOAD_INFO] = { command_get_autoload_info },
 217     [PA_COMMAND_GET_AUTOLOAD_INFO_LIST] = { command_get_autoload_info_list },
 218     [PA_COMMAND_ADD_AUTOLOAD] = { command_add_autoload },
 219     [PA_COMMAND_REMOVE_AUTOLOAD] = { command_remove_autoload },
 220
 221 };
 222
 223 /* structure management */
 224
 225 static struct upload_stream* upload_stream_new(struct connection *c, const struct pa_sample_spec *ss, const char *name, size_t length) {
 226     struct upload_stream *s;
 227     assert(c && ss && name && length);
 228
 229     s = pa_xmalloc(sizeof(struct upload_stream));
 230     s->type = UPLOAD_STREAM;
 231     s->connection = c;
 232     s->sample_spec = *ss;
 233     s->name = pa_xstrdup(name);
 234
 235     s->memchunk.memblock = NULL;
 236     s->memchunk.index = 0;
 237     s->memchunk.length = 0;
 238
 239     s->length = length;
 240
 241     pa_idxset_put(c->output_streams, s, &s->index);
 242     return s;
 243 }
 244
 245 static void upload_stream_free(struct upload_stream *o) {
 246     assert(o && o->connection);
 247
 248     pa_idxset_remove_by_data(o->connection->output_streams, o, NULL);
 249
 250     pa_xfree(o->name);
 251
 252     if (o->memchunk.memblock)
 253         pa_memblock_unref(o->memchunk.memblock);
 254
 255     pa_xfree(o);
 256 }
 257
 258 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) {
 259     struct record_stream *s;
 260     struct pa_source_output *source_output;
 261     size_t base;
 262     assert(c && source && ss && name && maxlength);
 263
 264     if (!(source_output = pa_source_output_new(source, name, ss, -1)))
 265         return NULL;
 266
 267     s = pa_xmalloc(sizeof(struct record_stream));
 268     s->connection = c;
 269     s->source_output = source_output;
 270     s->source_output->push = source_output_push_cb;
 271     s->source_output->kill = source_output_kill_cb;
 272     s->source_output->get_latency = source_output_get_latency_cb;
 273     s->source_output->userdata = s;
 274     s->source_output->owner = c->protocol->module;
 275     s->source_output->client = c->client;
 276
 277     s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_frame_size(ss), 0, 0, c->protocol->core->memblock_stat);
 278     assert(s->memblockq);
 279
 280     s->fragment_size = (fragment_size/base)*base;
 281     if (!s->fragment_size)
 282         s->fragment_size = base;
 283
 284     pa_idxset_put(c->record_streams, s, &s->index);
 285     return s;
 286 }
 287
 288 static void record_stream_free(struct record_stream* r) {
 289     assert(r && r->connection);
 290
 291     pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
 292     pa_source_output_disconnect(r->source_output);
 293     pa_source_output_unref(r->source_output);
 294     pa_memblockq_free(r->memblockq);
 295     pa_xfree(r);
 296 }
 297
 298 static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, const struct pa_sample_spec *ss, const char *name,
 299                                                    size_t maxlength,
 300                                                    size_t tlength,
 301                                                    size_t prebuf,
 302                                                    size_t minreq,
 303                                                    pa_volume_t volume) {
 304     struct playback_stream *s;
 305     struct pa_sink_input *sink_input;
 306     assert(c && sink && ss && name && maxlength);
 307
 308     if (!(sink_input = pa_sink_input_new(sink, name, ss, 0, -1)))
 309         return NULL;
 310
 311     s = pa_xmalloc(sizeof(struct playback_stream));
 312     s->type = PLAYBACK_STREAM;
 313     s->connection = c;
 314     s->sink_input = sink_input;
 315
 316     s->sink_input->peek = sink_input_peek_cb;
 317     s->sink_input->drop = sink_input_drop_cb;
 318     s->sink_input->kill = sink_input_kill_cb;
 319     s->sink_input->get_latency = sink_input_get_latency_cb;
 320     s->sink_input->userdata = s;
 321     s->sink_input->owner = c->protocol->module;
 322     s->sink_input->client = c->client;
 323
 324     s->memblockq = pa_memblockq_new(maxlength, tlength, pa_frame_size(ss), prebuf, minreq, c->protocol->core->memblock_stat);
 325     assert(s->memblockq);
 326
 327     s->requested_bytes = 0;
 328     s->drain_request = 0;
 329
 330     s->sink_input->volume = volume;
 331
 332     pa_idxset_put(c->output_streams, s, &s->index);
 333     return s;
 334 }
 335
 336 static void playback_stream_free(struct playback_stream* p) {
 337     assert(p && p->connection);
 338
 339     if (p->drain_request)
 340         pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
 341
 342     pa_idxset_remove_by_data(p->connection->output_streams, p, NULL);
 343     pa_sink_input_disconnect(p->sink_input);
 344     pa_sink_input_unref(p->sink_input);
 345     pa_memblockq_free(p->memblockq);
 346     pa_xfree(p);
 347 }
 348
 349 static void connection_free(struct connection *c) {
 350     struct record_stream *r;
 351     struct output_stream *o;
 352     assert(c && c->protocol);
 353
 354     pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
 355     while ((r = pa_idxset_first(c->record_streams, NULL)))
 356         record_stream_free(r);
 357     pa_idxset_free(c->record_streams, NULL, NULL);
 358
 359     while ((o = pa_idxset_first(c->output_streams, NULL)))
 360         if (o->type == PLAYBACK_STREAM)
 361             playback_stream_free((struct playback_stream*) o);
 362         else
 363             upload_stream_free((struct upload_stream*) o);
 364     pa_idxset_free(c->output_streams, NULL, NULL);
 365
 366     pa_pdispatch_unref(c->pdispatch);
 367     pa_pstream_close(c->pstream);
 368     pa_pstream_unref(c->pstream);
 369     pa_client_free(c->client);
 370
 371     if (c->subscription)
 372         pa_subscription_free(c->subscription);
 373
 374     pa_xfree(c);
 375 }
 376
 377 static void request_bytes(struct playback_stream *s) {
 378     struct pa_tagstruct *t;
 379     size_t l;
 380     assert(s);
 381
 382     if (!(l = pa_memblockq_missing(s->memblockq)))
 383         return;
 384
 385     if (l <= s->requested_bytes)
 386         return;
 387
 388     l -= s->requested_bytes;
 389
 390     if (l < pa_memblockq_get_minreq(s->memblockq))
 391         return;
 392
 393     s->requested_bytes += l;
 394
 395     t = pa_tagstruct_new(NULL, 0);
 396     assert(t);
 397     pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 398     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 399     pa_tagstruct_putu32(t, s->index);
 400     pa_tagstruct_putu32(t, l);
 401     pa_pstream_send_tagstruct(s->connection->pstream, t);
 402
 403 /*     pa_log(__FILE__": Requesting %u bytes\n", l); */
 404 }
 405
 406 static void send_memblock(struct connection *c) {
 407     uint32_t start;
 408     struct record_stream *r;
 409
 410     start = PA_IDXSET_INVALID;
 411     for (;;) {
 412         struct pa_memchunk chunk;
 413
 414         if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
 415             return;
 416
 417         if (start == PA_IDXSET_INVALID)
 418             start = c->rrobin_index;
 419         else if (start == c->rrobin_index)
 420             return;
 421
 422         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
 423             struct pa_memchunk schunk = chunk;
 424
 425             if (schunk.length > r->fragment_size)
 426                 schunk.length = r->fragment_size;
 427
 428             pa_pstream_send_memblock(c->pstream, r->index, 0, &schunk);
 429             pa_memblockq_drop(r->memblockq, &chunk, schunk.length);
 430             pa_memblock_unref(schunk.memblock);
 431
 432             return;
 433         }
 434     }
 435 }
 436
 437 static void send_playback_stream_killed(struct playback_stream *p) {
 438     struct pa_tagstruct *t;
 439     assert(p);
 440
 441     t = pa_tagstruct_new(NULL, 0);
 442     assert(t);
 443     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
 444     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 445     pa_tagstruct_putu32(t, p->index);
 446     pa_pstream_send_tagstruct(p->connection->pstream, t);
 447 }
 448
 449 static void send_record_stream_killed(struct record_stream *r) {
 450     struct pa_tagstruct *t;
 451     assert(r);
 452
 453     t = pa_tagstruct_new(NULL, 0);
 454     assert(t);
 455     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 456     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 457     pa_tagstruct_putu32(t, r->index);
 458     pa_pstream_send_tagstruct(r->connection->pstream, t);
 459 }
 460
 461 /*** sinkinput callbacks ***/
 462
 463 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
 464     struct playback_stream *s;
 465     assert(i && i->userdata && chunk);
 466     s = i->userdata;
 467
 468     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
 469         return -1;
 470
 471     return 0;
 472 }
 473
 474 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
 475     struct playback_stream *s;
 476     assert(i && i->userdata && length);
 477     s = i->userdata;
 478
 479     pa_memblockq_drop(s->memblockq, chunk, length);
 480     request_bytes(s);
 481
 482     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
 483         pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
 484         s->drain_request = 0;
 485     }
 486
 487 /*     pa_log(__FILE__": after_drop: %u\n", pa_memblockq_get_length(s->memblockq)); */
 488 }
 489
 490 static void sink_input_kill_cb(struct pa_sink_input *i) {
 491     assert(i && i->userdata);
 492     send_playback_stream_killed((struct playback_stream *) i->userdata);
 493     playback_stream_free((struct playback_stream *) i->userdata);
 494 }
 495
 496 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i) {
 497     struct playback_stream *s;
 498     assert(i && i->userdata);
 499     s = i->userdata;
 500
 501     /*pa_log(__FILE__": get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
 502
 503     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
 504 }
 505
 506 /*** source_output callbacks ***/
 507
 508 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
 509     struct record_stream *s;
 510     assert(o && o->userdata && chunk);
 511     s = o->userdata;
 512
 513     pa_memblockq_push_align(s->memblockq, chunk, 0);
 514     if (!pa_pstream_is_pending(s->connection->pstream))
 515         send_memblock(s->connection);
 516 }
 517
 518 static void source_output_kill_cb(struct pa_source_output *o) {
 519     assert(o && o->userdata);
 520     send_record_stream_killed((struct record_stream *) o->userdata);
 521     record_stream_free((struct record_stream *) o->userdata);
 522 }
 523
 524 static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o) {
 525     struct record_stream *s;
 526     assert(o && o->userdata);
 527     s = o->userdata;
 528
 529     /*pa_log(__FILE__": get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
 530
 531     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &o->sample_spec);
 532 }
 533
 534 /*** pdispatch callbacks ***/
 535
 536 static void protocol_error(struct connection *c) {
 537     pa_log(__FILE__": protocol error, kicking client\n");
 538     connection_free(c);
 539 }
 540
 541 static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 542     struct connection *c = userdata;
 543     struct playback_stream *s;
 544     size_t maxlength, tlength, prebuf, minreq;
 545     uint32_t sink_index;
 546     const char *name, *sink_name;
 547     struct pa_sample_spec ss;
 548     struct pa_tagstruct *reply;
 549     struct pa_sink *sink;
 550     pa_volume_t volume;
 551     int corked;
 552     assert(c && t && c->protocol && c->protocol->core);
 553
 554     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
 555         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 556         pa_tagstruct_getu32(t, &sink_index) < 0 ||
 557         pa_tagstruct_gets(t, &sink_name) < 0 ||
 558         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 559         pa_tagstruct_get_boolean(t, &corked) < 0 ||
 560         pa_tagstruct_getu32(t, &tlength) < 0 ||
 561         pa_tagstruct_getu32(t, &prebuf) < 0 ||
 562         pa_tagstruct_getu32(t, &minreq) < 0 ||
 563         pa_tagstruct_getu32(t, &volume) < 0 ||
 564         !pa_tagstruct_eof(t)) {
 565         protocol_error(c);
 566         return;
 567     }
 568
 569
 570     if (!c->authorized) {
 571         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 572         return;
 573     }
 574
 575     if (sink_index != (uint32_t) -1)
 576         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
 577     else
 578         sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK, 1);
 579
 580     if (!sink) {
 581         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 582         return;
 583     }
 584
 585     if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq, volume))) {
 586         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 587         return;
 588     }
 589
 590     pa_sink_input_cork(s->sink_input, corked);
 591
 592     reply = pa_tagstruct_new(NULL, 0);
 593     assert(reply);
 594     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 595     pa_tagstruct_putu32(reply, tag);
 596     pa_tagstruct_putu32(reply, s->index);
 597     assert(s->sink_input);
 598     pa_tagstruct_putu32(reply, s->sink_input->index);
 599     pa_tagstruct_putu32(reply, s->requested_bytes = pa_memblockq_missing(s->memblockq));
 600     pa_pstream_send_tagstruct(c->pstream, reply);
 601     request_bytes(s);
 602 }
 603
 604 static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 605     struct connection *c = userdata;
 606     uint32_t channel;
 607     assert(c && t);
 608
 609     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 610         !pa_tagstruct_eof(t)) {
 611         protocol_error(c);
 612         return;
 613     }
 614
 615     if (!c->authorized) {
 616         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 617         return;
 618     }
 619
 620     if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
 621         struct playback_stream *s;
 622         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
 623             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 624             return;
 625         }
 626
 627         playback_stream_free(s);
 628     } else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
 629         struct record_stream *s;
 630         if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
 631             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 632             return;
 633         }
 634
 635         record_stream_free(s);
 636     } else {
 637         struct upload_stream *s;
 638         assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
 639         if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
 640             pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
 641             return;
 642         }
 643
 644         upload_stream_free(s);
 645     }
 646
 647     pa_pstream_send_simple_ack(c->pstream, tag);
 648 }
 649
 650 static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 651     struct connection *c = userdata;
 652     struct record_stream *s;
 653     size_t maxlength, fragment_size;
 654     uint32_t source_index;
 655     const char *name, *source_name;
 656     struct pa_sample_spec ss;
 657     struct pa_tagstruct *reply;
 658     struct pa_source *source;
 659     int corked;
 660     assert(c && t && c->protocol && c->protocol->core);
 661
 662     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
 663         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 664         pa_tagstruct_getu32(t, &source_index) < 0 ||
 665         pa_tagstruct_gets(t, &source_name) < 0 ||
 666         pa_tagstruct_getu32(t, &maxlength) < 0 ||
 667         pa_tagstruct_get_boolean(t, &corked) < 0 ||
 668         pa_tagstruct_getu32(t, &fragment_size) < 0 ||
 669         !pa_tagstruct_eof(t)) {
 670         protocol_error(c);
 671         return;
 672     }
 673
 674     if (!c->authorized) {
 675         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 676         return;
 677     }
 678
 679     if (source_index != (uint32_t) -1)
 680         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
 681     else
 682         source = pa_namereg_get(c->protocol->core, source_name, PA_NAMEREG_SOURCE, 1);
 683
 684     if (!source) {
 685         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 686         return;
 687     }
 688
 689     if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
 690         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 691         return;
 692     }
 693
 694     pa_source_output_cork(s->source_output, corked);
 695
 696     reply = pa_tagstruct_new(NULL, 0);
 697     assert(reply);
 698     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 699     pa_tagstruct_putu32(reply, tag);
 700     pa_tagstruct_putu32(reply, s->index);
 701     assert(s->source_output);
 702     pa_tagstruct_putu32(reply, s->source_output->index);
 703     pa_pstream_send_tagstruct(c->pstream, reply);
 704 }
 705
 706 static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 707     struct connection *c = userdata;
 708     assert(c && t);
 709
 710     if (!pa_tagstruct_eof(t)) {
 711         protocol_error(c);
 712         return;
 713     }
 714
 715     if (!c->authorized) {
 716         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 717         return;
 718     }
 719
 720     assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
 721     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
 722     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 723     return;
 724 }
 725
 726 static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 727     struct connection *c = userdata;
 728     const void*cookie;
 729     assert(c && t);
 730
 731     if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
 732         !pa_tagstruct_eof(t)) {
 733         protocol_error(c);
 734         return;
 735     }
 736
 737     if (!c->authorized) {
 738         if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
 739             pa_log(__FILE__": Denied access to client with invalid authorization key.\n");
 740             pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 741             return;
 742         }
 743
 744         c->authorized = 1;
 745     }
 746
 747     pa_pstream_send_simple_ack(c->pstream, tag);
 748     return;
 749 }
 750
 751 static void command_set_client_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 752     struct connection *c = userdata;
 753     const char *name;
 754     assert(c && t);
 755
 756     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
 757         !pa_tagstruct_eof(t)) {
 758         protocol_error(c);
 759         return;
 760     }
 761
 762     pa_client_set_name(c->client, name);
 763     pa_pstream_send_simple_ack(c->pstream, tag);
 764     return;
 765 }
 766
 767 static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 768     struct connection *c = userdata;
 769     const char *name;
 770     uint32_t index = PA_IDXSET_INVALID;
 771     assert(c && t);
 772
 773     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
 774         !pa_tagstruct_eof(t)) {
 775         protocol_error(c);
 776         return;
 777     }
 778
 779     if (!c->authorized) {
 780         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 781         return;
 782     }
 783
 784     if (command == PA_COMMAND_LOOKUP_SINK) {
 785         struct pa_sink *sink;
 786         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
 787             index = sink->index;
 788     } else {
 789         struct pa_source *source;
 790         assert(command == PA_COMMAND_LOOKUP_SOURCE);
 791         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
 792             index = source->index;
 793     }
 794
 795     if (index == PA_IDXSET_INVALID)
 796         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 797     else {
 798         struct pa_tagstruct *reply;
 799         reply = pa_tagstruct_new(NULL, 0);
 800         assert(reply);
 801         pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 802         pa_tagstruct_putu32(reply, tag);
 803         pa_tagstruct_putu32(reply, index);
 804         pa_pstream_send_tagstruct(c->pstream, reply);
 805     }
 806 }
 807
 808 static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 809     struct connection *c = userdata;
 810     uint32_t index;
 811     struct playback_stream *s;
 812     assert(c && t);
 813
 814     if (pa_tagstruct_getu32(t, &index) < 0 ||
 815         !pa_tagstruct_eof(t)) {
 816         protocol_error(c);
 817         return;
 818     }
 819
 820     if (!c->authorized) {
 821         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 822         return;
 823     }
 824
 825     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 826         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 827         return;
 828     }
 829
 830     s->drain_request = 0;
 831
 832     pa_memblockq_prebuf_disable(s->memblockq);
 833
 834     if (!pa_memblockq_is_readable(s->memblockq)) {
 835 /*         pa_log("immediate drain: %u\n", pa_memblockq_get_length(s->memblockq)); */
 836         pa_pstream_send_simple_ack(c->pstream, tag);
 837     } else {
 838 /*         pa_log("slow drain triggered\n"); */
 839         s->drain_request = 1;
 840         s->drain_tag = tag;
 841
 842         pa_sink_notify(s->sink_input->sink);
 843     }
 844 }
 845
 846 static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 847     struct connection *c = userdata;
 848     struct pa_tagstruct *reply;
 849     assert(c && t);
 850
 851     if (!pa_tagstruct_eof(t)) {
 852         protocol_error(c);
 853         return;
 854     }
 855
 856     if (!c->authorized) {
 857         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 858         return;
 859     }
 860
 861     reply = pa_tagstruct_new(NULL, 0);
 862     assert(reply);
 863     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 864     pa_tagstruct_putu32(reply, tag);
 865     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
 866     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
 867     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
 868     pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
 869     pa_tagstruct_putu32(reply, pa_scache_total_size(c->protocol->core));
 870     pa_pstream_send_tagstruct(c->pstream, reply);
 871 }
 872
 873 static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 874     struct connection *c = userdata;
 875     struct pa_tagstruct *reply;
 876     struct playback_stream *s;
 877     struct timeval tv, now;
 878     uint32_t index;
 879     assert(c && t);
 880
 881     if (pa_tagstruct_getu32(t, &index) < 0 ||
 882         pa_tagstruct_get_timeval(t, &tv) < 0 ||
 883         !pa_tagstruct_eof(t)) {
 884         protocol_error(c);
 885         return;
 886     }
 887
 888     if (!c->authorized) {
 889         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 890         return;
 891     }
 892
 893     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
 894         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 895         return;
 896     }
 897
 898     reply = pa_tagstruct_new(NULL, 0);
 899     assert(reply);
 900     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 901     pa_tagstruct_putu32(reply, tag);
 902     pa_tagstruct_put_usec(reply, pa_sink_input_get_latency(s->sink_input));
 903     pa_tagstruct_put_usec(reply, pa_sink_get_latency(s->sink_input->sink));
 904     pa_tagstruct_put_usec(reply, 0);
 905     pa_tagstruct_put_boolean(reply, pa_memblockq_is_readable(s->memblockq));
 906     pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
 907     pa_tagstruct_put_timeval(reply, &tv);
 908     gettimeofday(&now, NULL);
 909     pa_tagstruct_put_timeval(reply, &now);
 910     pa_pstream_send_tagstruct(c->pstream, reply);
 911 }
 912
 913 static void command_get_record_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 914     struct connection *c = userdata;
 915     struct pa_tagstruct *reply;
 916     struct record_stream *s;
 917     struct timeval tv, now;
 918     uint32_t index;
 919     assert(c && t);
 920
 921     if (pa_tagstruct_getu32(t, &index) < 0 ||
 922         pa_tagstruct_get_timeval(t, &tv) < 0 ||
 923         !pa_tagstruct_eof(t)) {
 924         protocol_error(c);
 925         return;
 926     }
 927
 928     if (!c->authorized) {
 929         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 930         return;
 931     }
 932
 933     if (!(s = pa_idxset_get_by_index(c->record_streams, index))) {
 934         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
 935         return;
 936     }
 937
 938     reply = pa_tagstruct_new(NULL, 0);
 939     assert(reply);
 940     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 941     pa_tagstruct_putu32(reply, tag);
 942     pa_tagstruct_put_usec(reply, pa_source_output_get_latency(s->source_output));
 943     pa_tagstruct_put_usec(reply, s->source_output->source->monitor_of ? pa_sink_get_latency(s->source_output->source->monitor_of) : 0);
 944     pa_tagstruct_put_usec(reply, pa_source_get_latency(s->source_output->source));
 945     pa_tagstruct_put_boolean(reply, 0);
 946     pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
 947     pa_tagstruct_put_timeval(reply, &tv);
 948     gettimeofday(&now, NULL);
 949     pa_tagstruct_put_timeval(reply, &now);
 950     pa_pstream_send_tagstruct(c->pstream, reply);
 951 }
 952
 953
 954 static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 955     struct connection *c = userdata;
 956     struct upload_stream *s;
 957     size_t length;
 958     const char *name;
 959     struct pa_sample_spec ss;
 960     struct pa_tagstruct *reply;
 961     assert(c && t && c->protocol && c->protocol->core);
 962
 963     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
 964         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 965         pa_tagstruct_getu32(t, &length) < 0 ||
 966         !pa_tagstruct_eof(t)) {
 967         protocol_error(c);
 968         return;
 969     }
 970
 971     if (!c->authorized) {
 972         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
 973         return;
 974     }
 975
 976     if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
 977         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 978         return;
 979     }
 980
 981     if (!(s = upload_stream_new(c, &ss, name, length))) {
 982         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
 983         return;
 984     }
 985
 986     reply = pa_tagstruct_new(NULL, 0);
 987     assert(reply);
 988     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
 989     pa_tagstruct_putu32(reply, tag);
 990     pa_tagstruct_putu32(reply, s->index);
 991     pa_tagstruct_putu32(reply, length);
 992     pa_pstream_send_tagstruct(c->pstream, reply);
 993 }
 994
 995 static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 996     struct connection *c = userdata;
 997     uint32_t channel;
 998     struct upload_stream *s;
 999     uint32_t index;
1000     assert(c && t);
1001
1002     if (pa_tagstruct_getu32(t, &channel) < 0 ||
1003         !pa_tagstruct_eof(t)) {
1004         protocol_error(c);
1005         return;
1006     }
1007
1008     if (!c->authorized) {
1009         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1010         return;
1011     }
1012
1013     if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
1014         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
1015         return;
1016     }
1017
1018     pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
1019     pa_pstream_send_simple_ack(c->pstream, tag);
1020     upload_stream_free(s);
1021 }
1022
1023 static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1024     struct connection *c = userdata;
1025     uint32_t sink_index, volume;
1026     struct pa_sink *sink;
1027     const char *name, *sink_name;
1028     assert(c && t);
1029
1030     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
1031         pa_tagstruct_gets(t, &sink_name) < 0 ||
1032         pa_tagstruct_getu32(t, &volume) < 0 ||
1033         pa_tagstruct_gets(t, &name) < 0 || !name ||
1034         !pa_tagstruct_eof(t)) {
1035         protocol_error(c);
1036         return;
1037     }
1038
1039     if (!c->authorized) {
1040         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1041         return;
1042     }
1043
1044     if (sink_index != (uint32_t) -1)
1045         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
1046     else
1047         sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK, 1);
1048
1049     if (!sink) {
1050         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1051         return;
1052     }
1053
1054     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
1055         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1056         return;
1057     }
1058
1059     pa_pstream_send_simple_ack(c->pstream, tag);
1060 }
1061
1062 static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1063     struct connection *c = userdata;
1064     const char *name;
1065     assert(c && t);
1066
1067     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
1068         !pa_tagstruct_eof(t)) {
1069         protocol_error(c);
1070         return;
1071     }
1072
1073     if (!c->authorized) {
1074         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1075         return;
1076     }
1077
1078     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
1079         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1080         return;
1081     }
1082
1083     pa_pstream_send_simple_ack(c->pstream, tag);
1084 }
1085
1086 static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
1087     assert(t && sink);
1088     pa_tagstruct_putu32(t, sink->index);
1089     pa_tagstruct_puts(t, sink->name);
1090     pa_tagstruct_puts(t, sink->description);
1091     pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
1092     pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
1093     pa_tagstruct_putu32(t, sink->volume);
1094     pa_tagstruct_putu32(t, sink->monitor_source->index);
1095     pa_tagstruct_puts(t, sink->monitor_source->name);
1096     pa_tagstruct_put_usec(t, pa_sink_get_latency(sink));
1097 }
1098
1099 static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
1100     assert(t && source);
1101     pa_tagstruct_putu32(t, source->index);
1102     pa_tagstruct_puts(t, source->name);
1103     pa_tagstruct_puts(t, source->description);
1104     pa_tagstruct_put_sample_spec(t, &source->sample_spec);
1105     pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
1106     pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
1107     pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : NULL);
1108     pa_tagstruct_put_usec(t, pa_source_get_latency(source));
1109 }
1110
1111 static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
1112     assert(t && client);
1113     pa_tagstruct_putu32(t, client->index);
1114     pa_tagstruct_puts(t, client->name);
1115     pa_tagstruct_puts(t, client->protocol_name);
1116     pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
1117 }
1118
1119 static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
1120     assert(t && module);
1121     pa_tagstruct_putu32(t, module->index);
1122     pa_tagstruct_puts(t, module->name);
1123     pa_tagstruct_puts(t, module->argument);
1124     pa_tagstruct_putu32(t, module->n_used);
1125     pa_tagstruct_put_boolean(t, module->auto_unload);
1126 }
1127
1128 static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
1129     assert(t && s);
1130     pa_tagstruct_putu32(t, s->index);
1131     pa_tagstruct_puts(t, s->name);
1132     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1133     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1134     pa_tagstruct_putu32(t, s->sink->index);
1135     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1136     pa_tagstruct_putu32(t, s->volume);
1137     pa_tagstruct_put_usec(t, pa_sink_input_get_latency(s));
1138     pa_tagstruct_put_usec(t, pa_sink_get_latency(s->sink));
1139 }
1140
1141 static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
1142     assert(t && s);
1143     pa_tagstruct_putu32(t, s->index);
1144     pa_tagstruct_puts(t, s->name);
1145     pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
1146     pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
1147     pa_tagstruct_putu32(t, s->source->index);
1148     pa_tagstruct_put_sample_spec(t, &s->sample_spec);
1149     pa_tagstruct_put_usec(t, pa_source_output_get_latency(s));
1150     pa_tagstruct_put_usec(t, pa_source_get_latency(s->source));
1151 }
1152
1153 static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
1154     assert(t && e);
1155     pa_tagstruct_putu32(t, e->index);
1156     pa_tagstruct_puts(t, e->name);
1157     pa_tagstruct_putu32(t, e->volume);
1158     pa_tagstruct_put_usec(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
1159     pa_tagstruct_put_sample_spec(t, &e->sample_spec);
1160     pa_tagstruct_putu32(t, e->memchunk.length);
1161     pa_tagstruct_put_boolean(t, e->lazy);
1162     pa_tagstruct_puts(t, e->filename);
1163 }
1164
1165 static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1166     struct connection *c = userdata;
1167     uint32_t index;
1168     struct pa_sink *sink = NULL;
1169     struct pa_source *source = NULL;
1170     struct pa_client *client = NULL;
1171     struct pa_module *module = NULL;
1172     struct pa_sink_input *si = NULL;
1173     struct pa_source_output *so = NULL;
1174     struct pa_scache_entry *sce = NULL;
1175     const char *name;
1176     struct pa_tagstruct *reply;
1177     assert(c && t);
1178
1179
1180     if (pa_tagstruct_getu32(t, &index) < 0 ||
1181         (command != PA_COMMAND_GET_CLIENT_INFO &&
1182          command != PA_COMMAND_GET_MODULE_INFO &&
1183          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
1184          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
1185          pa_tagstruct_gets(t, &name) < 0) ||
1186         !pa_tagstruct_eof(t)) {
1187         protocol_error(c);
1188         return;
1189     }
1190
1191     if (!c->authorized) {
1192         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1193         return;
1194     }
1195
1196     if (command == PA_COMMAND_GET_SINK_INFO) {
1197         if (index != (uint32_t) -1)
1198             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1199         else
1200             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
1201     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
1202         if (index != (uint32_t) -1)
1203             source = pa_idxset_get_by_index(c->protocol->core->sources, index);
1204         else
1205             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
1206     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
1207         client = pa_idxset_get_by_index(c->protocol->core->clients, index);
1208     else if (command == PA_COMMAND_GET_MODULE_INFO)
1209         module = pa_idxset_get_by_index(c->protocol->core->modules, index);
1210     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
1211         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1212     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
1213         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
1214     else {
1215         assert(command == PA_COMMAND_GET_SAMPLE_INFO);
1216         if (index != (uint32_t) -1)
1217             sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
1218         else
1219             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
1220     }
1221
1222     if (!sink && !source && !client && !module && !si && !so && !sce) {
1223         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1224         return;
1225     }
1226
1227     reply = pa_tagstruct_new(NULL, 0);
1228     assert(reply);
1229     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1230     pa_tagstruct_putu32(reply, tag);
1231     if (sink)
1232         sink_fill_tagstruct(reply, sink);
1233     else if (source)
1234         source_fill_tagstruct(reply, source);
1235     else if (client)
1236         client_fill_tagstruct(reply, client);
1237     else if (module)
1238         module_fill_tagstruct(reply, module);
1239     else if (si)
1240         sink_input_fill_tagstruct(reply, si);
1241     else if (so)
1242         source_output_fill_tagstruct(reply, so);
1243     else
1244         scache_fill_tagstruct(reply, sce);
1245     pa_pstream_send_tagstruct(c->pstream, reply);
1246 }
1247
1248 static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1249     struct connection *c = userdata;
1250     struct pa_idxset *i;
1251     uint32_t index;
1252     void *p;
1253     struct pa_tagstruct *reply;
1254     assert(c && t);
1255
1256     if (!pa_tagstruct_eof(t)) {
1257         protocol_error(c);
1258         return;
1259     }
1260
1261     if (!c->authorized) {
1262         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1263         return;
1264     }
1265
1266     reply = pa_tagstruct_new(NULL, 0);
1267     assert(reply);
1268     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1269     pa_tagstruct_putu32(reply, tag);
1270
1271     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1272         i = c->protocol->core->sinks;
1273     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1274         i = c->protocol->core->sources;
1275     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1276         i = c->protocol->core->clients;
1277     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1278         i = c->protocol->core->modules;
1279     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1280         i = c->protocol->core->sink_inputs;
1281     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1282         i = c->protocol->core->source_outputs;
1283     else {
1284         assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1285         i = c->protocol->core->scache;
1286     }
1287
1288     if (i) {
1289         for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
1290             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
1291                 sink_fill_tagstruct(reply, p);
1292             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
1293                 source_fill_tagstruct(reply, p);
1294             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
1295                 client_fill_tagstruct(reply, p);
1296             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
1297                 module_fill_tagstruct(reply, p);
1298             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
1299                 sink_input_fill_tagstruct(reply, p);
1300             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
1301                 source_output_fill_tagstruct(reply, p);
1302             else {
1303                 assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
1304                 scache_fill_tagstruct(reply, p);
1305             }
1306         }
1307     }
1308
1309     pa_pstream_send_tagstruct(c->pstream, reply);
1310 }
1311
1312 static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1313     struct connection *c = userdata;
1314     struct pa_tagstruct *reply;
1315     char txt[256];
1316     const char *n;
1317     assert(c && t);
1318
1319     if (!pa_tagstruct_eof(t)) {
1320         protocol_error(c);
1321         return;
1322     }
1323
1324     if (!c->authorized) {
1325         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1326         return;
1327     }
1328
1329     reply = pa_tagstruct_new(NULL, 0);
1330     assert(reply);
1331     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1332     pa_tagstruct_putu32(reply, tag);
1333     pa_tagstruct_puts(reply, PACKAGE_NAME);
1334     pa_tagstruct_puts(reply, PACKAGE_VERSION);
1335     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
1336     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
1337     pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
1338
1339     n = pa_namereg_get_default_sink_name(c->protocol->core);
1340     pa_tagstruct_puts(reply, n);
1341     n = pa_namereg_get_default_source_name(c->protocol->core);
1342     pa_tagstruct_puts(reply, n);
1343     pa_pstream_send_tagstruct(c->pstream, reply);
1344 }
1345
1346 static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
1347     struct pa_tagstruct *t;
1348     struct connection *c = userdata;
1349     assert(c && core);
1350
1351     t = pa_tagstruct_new(NULL, 0);
1352     assert(t);
1353     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
1354     pa_tagstruct_putu32(t, (uint32_t) -1);
1355     pa_tagstruct_putu32(t, e);
1356     pa_tagstruct_putu32(t, index);
1357     pa_pstream_send_tagstruct(c->pstream, t);
1358 }
1359
1360 static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1361     struct connection *c = userdata;
1362     enum pa_subscription_mask m;
1363     assert(c && t);
1364
1365     if (pa_tagstruct_getu32(t, &m) < 0 ||
1366         !pa_tagstruct_eof(t)) {
1367         protocol_error(c);
1368         return;
1369     }
1370
1371     if (!c->authorized) {
1372         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1373         return;
1374     }
1375
1376     if (c->subscription)
1377         pa_subscription_free(c->subscription);
1378
1379     if (m != 0) {
1380         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
1381         assert(c->subscription);
1382     } else
1383         c->subscription = NULL;
1384
1385     pa_pstream_send_simple_ack(c->pstream, tag);
1386 }
1387
1388 static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1389     struct connection *c = userdata;
1390     uint32_t index, volume;
1391     struct pa_sink *sink = NULL;
1392     struct pa_sink_input *si = NULL;
1393     const char *name = NULL;
1394     assert(c && t);
1395
1396     if (pa_tagstruct_getu32(t, &index) < 0 ||
1397         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
1398         pa_tagstruct_getu32(t, &volume) ||
1399         !pa_tagstruct_eof(t)) {
1400         protocol_error(c);
1401         return;
1402     }
1403
1404     if (!c->authorized) {
1405         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1406         return;
1407     }
1408
1409     if (command == PA_COMMAND_SET_SINK_VOLUME) {
1410         if (index != (uint32_t) -1)
1411             sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
1412         else
1413             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
1414     }  else {
1415         assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
1416         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
1417     }
1418
1419     if (!si && !sink) {
1420         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1421         return;
1422     }
1423
1424     if (sink)
1425         pa_sink_set_volume(sink, volume);
1426     else if (si)
1427         pa_sink_input_set_volume(si, volume);
1428
1429     pa_pstream_send_simple_ack(c->pstream, tag);
1430 }
1431
1432 static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1433     struct connection *c = userdata;
1434     uint32_t index;
1435     int b;
1436     struct playback_stream *s;
1437     assert(c && t);
1438
1439     if (pa_tagstruct_getu32(t, &index) < 0 ||
1440         pa_tagstruct_get_boolean(t, &b) < 0 ||
1441         !pa_tagstruct_eof(t)) {
1442         protocol_error(c);
1443         return;
1444     }
1445
1446     if (!c->authorized) {
1447         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1448         return;
1449     }
1450
1451     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1452         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1453         return;
1454     }
1455
1456     pa_sink_input_cork(s->sink_input, b);
1457     pa_pstream_send_simple_ack(c->pstream, tag);
1458 }
1459
1460 static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1461     struct connection *c = userdata;
1462     uint32_t index;
1463     struct playback_stream *s;
1464     assert(c && t);
1465
1466     if (pa_tagstruct_getu32(t, &index) < 0 ||
1467         !pa_tagstruct_eof(t)) {
1468         protocol_error(c);
1469         return;
1470     }
1471
1472     if (!c->authorized) {
1473         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1474         return;
1475     }
1476
1477     if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1478         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1479         return;
1480     }
1481
1482     if (command == PA_COMMAND_PREBUF_PLAYBACK_STREAM)
1483         pa_memblockq_prebuf_reenable(s->memblockq);
1484     else if (command == PA_COMMAND_TRIGGER_PLAYBACK_STREAM)
1485         pa_memblockq_prebuf_disable(s->memblockq);
1486     else {
1487         assert(command == PA_COMMAND_FLUSH_PLAYBACK_STREAM);
1488         pa_memblockq_flush(s->memblockq);
1489         /*pa_log(__FILE__": flush: %u\n", pa_memblockq_get_length(s->memblockq));*/
1490     }
1491
1492     pa_sink_notify(s->sink_input->sink);
1493     pa_pstream_send_simple_ack(c->pstream, tag);
1494     request_bytes(s);
1495 }
1496
1497 static void command_cork_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1498     struct connection *c = userdata;
1499     uint32_t index;
1500     struct record_stream *s;
1501     int b;
1502     assert(c && t);
1503
1504     if (pa_tagstruct_getu32(t, &index) < 0 ||
1505         pa_tagstruct_get_boolean(t, &b) < 0 ||
1506         !pa_tagstruct_eof(t)) {
1507         protocol_error(c);
1508         return;
1509     }
1510
1511     if (!c->authorized) {
1512         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1513         return;
1514     }
1515
1516     if (!(s = pa_idxset_get_by_index(c->record_streams, index))) {
1517         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1518         return;
1519     }
1520
1521     pa_source_output_cork(s->source_output, b);
1522     pa_pstream_send_simple_ack(c->pstream, tag);
1523 }
1524
1525 static void command_flush_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1526     struct connection *c = userdata;
1527     uint32_t index;
1528     struct record_stream *s;
1529     assert(c && t);
1530
1531     if (pa_tagstruct_getu32(t, &index) < 0 ||
1532         !pa_tagstruct_eof(t)) {
1533         protocol_error(c);
1534         return;
1535     }
1536
1537     if (!c->authorized) {
1538         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1539         return;
1540     }
1541
1542     if (!(s = pa_idxset_get_by_index(c->record_streams, index))) {
1543         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1544         return;
1545     }
1546
1547     pa_memblockq_flush(s->memblockq);
1548     pa_pstream_send_simple_ack(c->pstream, tag);
1549 }
1550
1551 static void command_set_default_sink_or_source(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1552     struct connection *c = userdata;
1553     uint32_t index;
1554     const char *s;
1555     assert(c && t);
1556
1557     if (pa_tagstruct_getu32(t, &index) < 0 ||
1558         pa_tagstruct_gets(t, &s) < 0 || !s ||
1559         !pa_tagstruct_eof(t)) {
1560         protocol_error(c);
1561         return;
1562     }
1563
1564     if (!c->authorized) {
1565         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1566         return;
1567     }
1568
1569     pa_namereg_set_default(c->protocol->core, s, command == PA_COMMAND_SET_DEFAULT_SOURCE ? PA_NAMEREG_SOURCE : PA_NAMEREG_SINK);
1570     pa_pstream_send_simple_ack(c->pstream, tag);
1571 }
1572
1573 static void command_set_stream_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1574     struct connection *c = userdata;
1575     uint32_t index;
1576     const char *name;
1577     assert(c && t);
1578
1579     if (pa_tagstruct_getu32(t, &index) < 0 ||
1580         pa_tagstruct_gets(t, &name) < 0 || !name ||
1581         !pa_tagstruct_eof(t)) {
1582         protocol_error(c);
1583         return;
1584     }
1585
1586     if (!c->authorized) {
1587         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1588         return;
1589     }
1590
1591     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_NAME) {
1592         struct playback_stream *s;
1593
1594         if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
1595             pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1596             return;
1597         }
1598
1599         pa_sink_input_set_name(s->sink_input, name);
1600
1601     } else {
1602         struct record_stream *s;
1603
1604         if (!(s = pa_idxset_get_by_index(c->record_streams, index))) {
1605             pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1606             return;
1607         }
1608
1609         pa_source_output_set_name(s->source_output, name);
1610     }
1611
1612     pa_pstream_send_simple_ack(c->pstream, tag);
1613 }
1614
1615 static void command_kill(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1616     struct connection *c = userdata;
1617     uint32_t index;
1618     assert(c && t);
1619
1620     if (pa_tagstruct_getu32(t, &index) < 0 ||
1621         !pa_tagstruct_eof(t)) {
1622         protocol_error(c);
1623         return;
1624     }
1625
1626     if (!c->authorized) {
1627         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1628         return;
1629     }
1630
1631     if (command == PA_COMMAND_KILL_CLIENT) {
1632         struct pa_client *client;
1633
1634         if (!(client = pa_idxset_get_by_index(c->protocol->core->clients, index))) {
1635             pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1636             return;
1637         }
1638
1639         pa_client_kill(client);
1640     } else if (command == PA_COMMAND_KILL_SINK_INPUT) {
1641         struct pa_sink_input *s;
1642
1643         if (!(s = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index))) {
1644             pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1645             return;
1646         }
1647
1648         pa_sink_input_kill(s);
1649     } else {
1650         struct pa_source_output *s;
1651
1652         assert(command == PA_COMMAND_KILL_SOURCE_OUTPUT);
1653
1654         if (!(s = pa_idxset_get_by_index(c->protocol->core->source_outputs, index))) {
1655             pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1656             return;
1657         }
1658
1659         pa_source_output_kill(s);
1660     }
1661
1662     pa_pstream_send_simple_ack(c->pstream, tag);
1663 }
1664
1665 static void command_load_module(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1666     struct connection *c = userdata;
1667     struct pa_module *m;
1668     const char *name, *argument;
1669     struct pa_tagstruct *reply;
1670     assert(c && t);
1671
1672     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
1673         pa_tagstruct_gets(t, &argument) < 0 ||
1674         !pa_tagstruct_eof(t)) {
1675         protocol_error(c);
1676         return;
1677     }
1678
1679     if (!c->authorized) {
1680         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1681         return;
1682     }
1683
1684     if (!(m = pa_module_load(c->protocol->core, name, argument))) {
1685         pa_pstream_send_error(c->pstream, tag, PA_ERROR_INITFAILED);
1686         return;
1687     }
1688
1689     reply = pa_tagstruct_new(NULL, 0);
1690     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1691     pa_tagstruct_putu32(reply, tag);
1692     pa_tagstruct_putu32(reply, m->index);
1693     pa_pstream_send_tagstruct(c->pstream, reply);
1694 }
1695
1696 static void command_unload_module(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1697     struct connection *c = userdata;
1698     uint32_t index;
1699     struct pa_module *m;
1700     assert(c && t);
1701
1702     if (pa_tagstruct_getu32(t, &index) < 0 ||
1703         !pa_tagstruct_eof(t)) {
1704         protocol_error(c);
1705         return;
1706     }
1707
1708     if (!c->authorized) {
1709         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1710         return;
1711     }
1712
1713     if (!(m = pa_idxset_get_by_index(c->protocol->core->modules, index))) {
1714         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1715         return;
1716     }
1717
1718     pa_module_unload_request(m);
1719     pa_pstream_send_simple_ack(c->pstream, tag);
1720 }
1721
1722 static void command_add_autoload(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1723     struct connection *c = userdata;
1724     const char *name, *module, *argument;
1725     uint32_t type;
1726     assert(c && t);
1727
1728     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
1729         pa_tagstruct_getu32(t, &type) < 0 || type > 1 ||
1730         pa_tagstruct_gets(t, &module) < 0 || !module ||
1731         pa_tagstruct_gets(t, &argument) < 0 ||
1732         !pa_tagstruct_eof(t)) {
1733         protocol_error(c);
1734         return;
1735     }
1736
1737     if (!c->authorized) {
1738         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1739         return;
1740     }
1741
1742     if (pa_autoload_add(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE, module, argument) < 0) {
1743         pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
1744         return;
1745     }
1746
1747     pa_pstream_send_simple_ack(c->pstream, tag);
1748 }
1749
1750 static void command_remove_autoload(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1751     struct connection *c = userdata;
1752     const char *name;
1753     uint32_t type;
1754     assert(c && t);
1755
1756     if (pa_tagstruct_gets(t, &name) < 0 || !name ||
1757         pa_tagstruct_getu32(t, &type) < 0 || type > 1 ||
1758         !pa_tagstruct_eof(t)) {
1759         protocol_error(c);
1760         return;
1761     }
1762
1763     if (!c->authorized) {
1764         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1765         return;
1766     }
1767
1768     if (pa_autoload_remove(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE) < 0) {
1769         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1770         return;
1771     }
1772
1773     pa_pstream_send_simple_ack(c->pstream, tag);
1774 }
1775
1776 static void autoload_fill_tagstruct(struct pa_tagstruct *t, struct pa_autoload_entry *e) {
1777     assert(t && e);
1778     pa_tagstruct_puts(t, e->name);
1779     pa_tagstruct_putu32(t, e->type == PA_NAMEREG_SINK ? 0 : 1);
1780     pa_tagstruct_puts(t, e->module);
1781     pa_tagstruct_puts(t, e->argument);
1782 }
1783
1784 static void command_get_autoload_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1785     struct connection *c = userdata;
1786     struct pa_autoload_entry *a = NULL;
1787     uint32_t type;
1788     const char *name;
1789     struct pa_tagstruct *reply;
1790     assert(c && t);
1791
1792     if (pa_tagstruct_gets(t, &name) < 0 || name ||
1793         pa_tagstruct_getu32(t, &type) < 0 || type > 1 ||
1794         !pa_tagstruct_eof(t)) {
1795         protocol_error(c);
1796         return;
1797     }
1798
1799     if (!c->authorized) {
1800         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1801         return;
1802     }
1803
1804     if (!c->protocol->core->autoload_hashmap || !(a = pa_hashmap_get(c->protocol->core->autoload_hashmap, name)) || (a->type == PA_NAMEREG_SINK && type != 0) || (a->type == PA_NAMEREG_SOURCE && type != 1)) {
1805         pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
1806         return;
1807     }
1808
1809     reply = pa_tagstruct_new(NULL, 0);
1810     assert(reply);
1811     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1812     pa_tagstruct_putu32(reply, tag);
1813     autoload_fill_tagstruct(reply, a);
1814     pa_pstream_send_tagstruct(c->pstream, reply);
1815 }
1816
1817 static void command_get_autoload_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
1818     struct connection *c = userdata;
1819     struct pa_tagstruct *reply;
1820     assert(c && t);
1821
1822     if (!pa_tagstruct_eof(t)) {
1823         protocol_error(c);
1824         return;
1825     }
1826
1827     if (!c->authorized) {
1828         pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
1829         return;
1830     }
1831
1832     reply = pa_tagstruct_new(NULL, 0);
1833     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1834     pa_tagstruct_putu32(reply, tag);
1835
1836     if (c->protocol->core->autoload_hashmap) {
1837         struct pa_autoload_entry *a;
1838         void *state = NULL;
1839
1840         while ((a = pa_hashmap_iterate(c->protocol->core->autoload_hashmap, &state)))
1841             autoload_fill_tagstruct(reply, a);
1842     }
1843
1844     pa_pstream_send_tagstruct(c->pstream, reply);
1845 }
1846
1847 /*** pstream callbacks ***/
1848
1849 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
1850     struct connection *c = userdata;
1851     assert(p && packet && packet->data && c);
1852
1853     if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
1854         pa_log(__FILE__": invalid packet.\n");
1855         connection_free(c);
1856     }
1857 }
1858
1859 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
1860     struct connection *c = userdata;
1861     struct output_stream *stream;
1862     assert(p && chunk && userdata);
1863
1864     if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
1865         pa_log(__FILE__": client sent block for invalid stream.\n");
1866         connection_free(c);
1867         return;
1868     }
1869
1870     if (stream->type == PLAYBACK_STREAM) {
1871         struct playback_stream *p = (struct playback_stream*) stream;
1872         if (chunk->length >= p->requested_bytes)
1873             p->requested_bytes = 0;
1874         else
1875             p->requested_bytes -= chunk->length;
1876
1877         pa_memblockq_push_align(p->memblockq, chunk, delta);
1878         assert(p->sink_input);
1879 /*         pa_log(__FILE__": after_recv: %u\n", pa_memblockq_get_length(p->memblockq)); */
1880
1881         pa_sink_notify(p->sink_input->sink);
1882 /*          pa_log(__FILE__": Recieved %u bytes.\n", chunk->length);  */
1883
1884     } else {
1885         struct upload_stream *u = (struct upload_stream*) stream;
1886         size_t l;
1887         assert(u->type == UPLOAD_STREAM);
1888
1889         if (!u->memchunk.memblock) {
1890             if (u->length == chunk->length) {
1891                 u->memchunk = *chunk;
1892                 pa_memblock_ref(u->memchunk.memblock);
1893                 u->length = 0;
1894             } else {
1895                 u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
1896                 u->memchunk.index = u->memchunk.length = 0;
1897             }
1898         }
1899
1900         assert(u->memchunk.memblock);
1901
1902         l = u->length;
1903         if (l > chunk->length)
1904             l = chunk->length;
1905
1906         if (l > 0) {
1907             memcpy((uint8_t*) u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length,
1908                    (uint8_t*) chunk->memblock->data+chunk->index, l);
1909             u->memchunk.length += l;
1910             u->length -= l;
1911         }
1912     }
1913 }
1914
1915 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
1916     struct connection *c = userdata;
1917     assert(p && c);
1918     connection_free(c);
1919
1920 /*    pa_log(__FILE__": connection died.\n");*/
1921 }
1922
1923
1924 static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
1925     struct connection *c = userdata;
1926     assert(p && c);
1927
1928     send_memblock(c);
1929 }
1930
1931 /*** client callbacks ***/
1932
1933 static void client_kill_cb(struct pa_client *c) {
1934     assert(c && c->userdata);
1935     connection_free(c->userdata);
1936 }
1937
1938 /*** socket server callbacks ***/
1939
1940 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1941     struct pa_protocol_native *p = userdata;
1942     struct connection *c;
1943     assert(io && p);
1944
1945     c = pa_xmalloc(sizeof(struct connection));
1946
1947     c->authorized =!! p->public;
1948     c->protocol = p;
1949     assert(p->core);
1950     c->client = pa_client_new(p->core, "NATIVE", "Client");
1951     assert(c->client);
1952     c->client->kill = client_kill_cb;
1953     c->client->userdata = c;
1954     c->client->owner = p->module;
1955
1956     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
1957     assert(c->pstream);
1958
1959     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
1960     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
1961     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
1962     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
1963
1964     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
1965     assert(c->pdispatch);
1966
1967     c->record_streams = pa_idxset_new(NULL, NULL);
1968     c->output_streams = pa_idxset_new(NULL, NULL);
1969     assert(c->record_streams && c->output_streams);
1970
1971     c->rrobin_index = PA_IDXSET_INVALID;
1972     c->subscription = NULL;
1973
1974     pa_idxset_put(p->connections, c, NULL);
1975 }
1976
1977 /*** module entry points ***/
1978
1979 static struct pa_protocol_native* protocol_new_internal(struct pa_core *c, struct pa_module *m, struct pa_modargs *ma) {
1980     struct pa_protocol_native *p;
1981     int public = 0;
1982     assert(c && ma);
1983
1984     if (pa_modargs_get_value_boolean(ma, "public", &public) < 0) {
1985         pa_log(__FILE__": public= expects a boolean argument.\n");
1986         return NULL;
1987     }
1988
1989     p = pa_xmalloc(sizeof(struct pa_protocol_native));
1990
1991     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
1992         pa_xfree(p);
1993         return NULL;
1994     }
1995
1996     p->module = m;
1997     p->public = public;
1998     p->server = NULL;
1999     p->core = c;
2000     p->connections = pa_idxset_new(NULL, NULL);
2001     assert(p->connections);
2002
2003     return p;
2004 }
2005
2006 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) {
2007     struct pa_protocol_native *p;
2008
2009     if (!(p = protocol_new_internal(core, m, ma)))
2010         return NULL;
2011
2012     p->server = server;
2013     pa_socket_server_set_callback(p->server, on_connection, p);
2014
2015     return p;
2016 }
2017
2018 void pa_protocol_native_free(struct pa_protocol_native *p) {
2019     struct connection *c;
2020     assert(p);
2021
2022     while ((c = pa_idxset_first(p->connections, NULL)))
2023         connection_free(c);
2024     pa_idxset_free(p->connections, NULL, NULL);
2025
2026     if (p->server)
2027         pa_socket_server_unref(p->server);
2028
2029     pa_xfree(p);
2030 }
2031
2032 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) {
2033     struct pa_protocol_native *p;
2034
2035     if (!(p = protocol_new_internal(core, m, ma)))
2036         return NULL;
2037
2038     on_connection(NULL, io, p);
2039
2040     return p;
2041 }