code.delx.au - pulseaudio/blob - src/pulsecore/protocol-native.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33
  34 #include <pulse/timeval.h>
  35 #include <pulse/version.h>
  36 #include <pulse/utf8.h>
  37 #include <pulse/util.h>
  38 #include <pulse/xmalloc.h>
  39
  40 #include <pulsecore/native-common.h>
  41 #include <pulsecore/packet.h>
  42 #include <pulsecore/client.h>
  43 #include <pulsecore/source-output.h>
  44 #include <pulsecore/sink-input.h>
  45 #include <pulsecore/pstream.h>
  46 #include <pulsecore/tagstruct.h>
  47 #include <pulsecore/pdispatch.h>
  48 #include <pulsecore/pstream-util.h>
  49 #include <pulsecore/authkey.h>
  50 #include <pulsecore/namereg.h>
  51 #include <pulsecore/core-scache.h>
  52 #include <pulsecore/core-subscribe.h>
  53 #include <pulsecore/log.h>
  54 #include <pulsecore/autoload.h>
  55 #include <pulsecore/authkey-prop.h>
  56 #include <pulsecore/strlist.h>
  57 #include <pulsecore/props.h>
  58 #include <pulsecore/sample-util.h>
  59 #include <pulsecore/llist.h>
  60 #include <pulsecore/creds.h>
  61 #include <pulsecore/core-util.h>
  62 #include <pulsecore/ipacl.h>
  63 #include <pulsecore/thread-mq.h>
  64
  65 #include "protocol-native.h"
  66
  67 /* Kick a client if it doesn't authenticate within this time */
  68 #define AUTH_TIMEOUT 60
  69
  70 /* Don't accept more connection than this */
  71 #define MAX_CONNECTIONS 64
  72
  73 #define MAX_MEMBLOCKQ_LENGTH (4*1024*1024) /* 4MB */
  74
  75 typedef struct connection connection;
  76 struct pa_protocol_native;
  77
  78 typedef struct record_stream {
  79     pa_msgobject parent;
  80
  81     connection *connection;
  82     uint32_t index;
  83
  84     pa_source_output *source_output;
  85     pa_memblockq *memblockq;
  86     size_t fragment_size;
  87 } record_stream;
  88
  89 typedef struct output_stream {
  90     pa_msgobject parent;
  91 } output_stream;
  92
  93 typedef struct playback_stream {
  94     output_stream parent;
  95
  96     connection *connection;
  97     uint32_t index;
  98
  99     pa_sink_input *sink_input;
 100     pa_memblockq *memblockq;
 101     int drain_request;
 102     uint32_t drain_tag;
 103     uint32_t syncid;
 104     int underrun;
 105
 106     pa_atomic_t missing;
 107     size_t minreq;
 108
 109     /* Only updated after SINK_INPUT_MESSAGE_UPDATE_LATENCY */
 110     int64_t read_index, write_index;
 111     size_t resampled_chunk_length;
 112 } playback_stream;
 113
 114 typedef struct upload_stream {
 115     output_stream parent;
 116
 117     connection *connection;
 118     uint32_t index;
 119
 120     pa_memchunk memchunk;
 121     size_t length;
 122     char *name;
 123     pa_sample_spec sample_spec;
 124     pa_channel_map channel_map;
 125 } upload_stream;
 126
 127 struct connection {
 128     pa_msgobject parent;
 129
 130     int authorized;
 131     uint32_t version;
 132     pa_protocol_native *protocol;
 133     pa_client *client;
 134     pa_pstream *pstream;
 135     pa_pdispatch *pdispatch;
 136     pa_idxset *record_streams, *output_streams;
 137     uint32_t rrobin_index;
 138     pa_subscription *subscription;
 139     pa_time_event *auth_timeout_event;
 140 };
 141
 142 PA_DECLARE_CLASS(record_stream);
 143 #define RECORD_STREAM(o) (record_stream_cast(o))
 144 static PA_DEFINE_CHECK_TYPE(record_stream, pa_msgobject);
 145
 146 PA_DECLARE_CLASS(output_stream);
 147 #define OUTPUT_STREAM(o) (output_stream_cast(o))
 148 static PA_DEFINE_CHECK_TYPE(output_stream, pa_msgobject);
 149
 150 PA_DECLARE_CLASS(playback_stream);
 151 #define PLAYBACK_STREAM(o) (playback_stream_cast(o))
 152 static PA_DEFINE_CHECK_TYPE(playback_stream, output_stream);
 153
 154 PA_DECLARE_CLASS(upload_stream);
 155 #define UPLOAD_STREAM(o) (upload_stream_cast(o))
 156 static PA_DEFINE_CHECK_TYPE(upload_stream, output_stream);
 157
 158 PA_DECLARE_CLASS(connection);
 159 #define CONNECTION(o) (connection_cast(o))
 160 static PA_DEFINE_CHECK_TYPE(connection, pa_msgobject);
 161
 162 struct pa_protocol_native {
 163     pa_module *module;
 164     pa_core *core;
 165     int public;
 166     pa_socket_server *server;
 167     pa_idxset *connections;
 168     uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
 169     int auth_cookie_in_property;
 170 #ifdef HAVE_CREDS
 171     char *auth_group;
 172 #endif
 173     pa_ip_acl *auth_ip_acl;
 174 };
 175
 176 enum {
 177     SINK_INPUT_MESSAGE_POST_DATA = PA_SINK_INPUT_MESSAGE_MAX, /* data from main loop to sink input */
 178     SINK_INPUT_MESSAGE_DRAIN, /* disabled prebuf, get playback started. */
 179     SINK_INPUT_MESSAGE_FLUSH,
 180     SINK_INPUT_MESSAGE_TRIGGER,
 181     SINK_INPUT_MESSAGE_SEEK,
 182     SINK_INPUT_MESSAGE_PREBUF_FORCE,
 183     SINK_INPUT_MESSAGE_UPDATE_LATENCY
 184 };
 185
 186 enum {
 187     PLAYBACK_STREAM_MESSAGE_REQUEST_DATA,      /* data requested from sink input from the main loop */
 188     PLAYBACK_STREAM_MESSAGE_UNDERFLOW,
 189     PLAYBACK_STREAM_MESSAGE_OVERFLOW,
 190     PLAYBACK_STREAM_MESSAGE_DRAIN_ACK
 191 };
 192
 193 enum {
 194     RECORD_STREAM_MESSAGE_POST_DATA         /* data from source output to main loop */
 195 };
 196
 197 enum {
 198     CONNECTION_MESSAGE_RELEASE,
 199     CONNECTION_MESSAGE_REVOKE
 200 };
 201
 202 static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk);
 203 static void sink_input_drop_cb(pa_sink_input *i, size_t length);
 204 static void sink_input_kill_cb(pa_sink_input *i);
 205 static void sink_input_suspend_cb(pa_sink_input *i, pa_bool_t suspend);
 206 static void sink_input_moved_cb(pa_sink_input *i);
 207
 208 static void send_memblock(connection *c);
 209 static void request_bytes(struct playback_stream*s);
 210
 211 static void source_output_kill_cb(pa_source_output *o);
 212 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk);
 213 static void source_output_suspend_cb(pa_source_output *o, pa_bool_t suspend);
 214 static void source_output_moved_cb(pa_source_output *o);
 215 static pa_usec_t source_output_get_latency_cb(pa_source_output *o);
 216
 217 static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
 218
 219 static void command_exit(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 220 static void command_create_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 221 static void command_drain_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 222 static void command_create_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 223 static void command_delete_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 224 static void command_auth(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 225 static void command_set_client_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 226 static void command_lookup(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 227 static void command_stat(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 228 static void command_get_playback_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 229 static void command_get_record_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 230 static void command_create_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 231 static void command_finish_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 232 static void command_play_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 233 static void command_remove_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 234 static void command_get_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 235 static void command_get_info_list(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 236 static void command_get_server_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 237 static void command_subscribe(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 238 static void command_set_volume(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 239 static void command_set_mute(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 240 static void command_cork_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 241 static void command_trigger_or_flush_or_prebuf_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 242 static void command_set_default_sink_or_source(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 243 static void command_set_stream_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 244 static void command_kill(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 245 static void command_load_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 246 static void command_unload_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 247 static void command_add_autoload(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 248 static void command_remove_autoload(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 249 static void command_get_autoload_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 250 static void command_get_autoload_info_list(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 251 static void command_cork_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 252 static void command_flush_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 253 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 254 static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 255 static void command_set_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 256 static void command_update_stream_sample_rate(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 257
 258 static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
 259     [PA_COMMAND_ERROR] = NULL,
 260     [PA_COMMAND_TIMEOUT] = NULL,
 261     [PA_COMMAND_REPLY] = NULL,
 262     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = command_create_playback_stream,
 263     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = command_delete_stream,
 264     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = command_drain_playback_stream,
 265     [PA_COMMAND_CREATE_RECORD_STREAM] = command_create_record_stream,
 266     [PA_COMMAND_DELETE_RECORD_STREAM] = command_delete_stream,
 267     [PA_COMMAND_AUTH] = command_auth,
 268     [PA_COMMAND_REQUEST] = NULL,
 269     [PA_COMMAND_EXIT] = command_exit,
 270     [PA_COMMAND_SET_CLIENT_NAME] = command_set_client_name,
 271     [PA_COMMAND_LOOKUP_SINK] = command_lookup,
 272     [PA_COMMAND_LOOKUP_SOURCE] = command_lookup,
 273     [PA_COMMAND_STAT] = command_stat,
 274     [PA_COMMAND_GET_PLAYBACK_LATENCY] = command_get_playback_latency,
 275     [PA_COMMAND_GET_RECORD_LATENCY] = command_get_record_latency,
 276     [PA_COMMAND_CREATE_UPLOAD_STREAM] = command_create_upload_stream,
 277     [PA_COMMAND_DELETE_UPLOAD_STREAM] = command_delete_stream,
 278     [PA_COMMAND_FINISH_UPLOAD_STREAM] = command_finish_upload_stream,
 279     [PA_COMMAND_PLAY_SAMPLE] = command_play_sample,
 280     [PA_COMMAND_REMOVE_SAMPLE] = command_remove_sample,
 281     [PA_COMMAND_GET_SINK_INFO] = command_get_info,
 282     [PA_COMMAND_GET_SOURCE_INFO] = command_get_info,
 283     [PA_COMMAND_GET_CLIENT_INFO] = command_get_info,
 284     [PA_COMMAND_GET_MODULE_INFO] = command_get_info,
 285     [PA_COMMAND_GET_SINK_INPUT_INFO] = command_get_info,
 286     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = command_get_info,
 287     [PA_COMMAND_GET_SAMPLE_INFO] = command_get_info,
 288     [PA_COMMAND_GET_SINK_INFO_LIST] = command_get_info_list,
 289     [PA_COMMAND_GET_SOURCE_INFO_LIST] = command_get_info_list,
 290     [PA_COMMAND_GET_MODULE_INFO_LIST] = command_get_info_list,
 291     [PA_COMMAND_GET_CLIENT_INFO_LIST] = command_get_info_list,
 292     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = command_get_info_list,
 293     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = command_get_info_list,
 294     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = command_get_info_list,
 295     [PA_COMMAND_GET_SERVER_INFO] = command_get_server_info,
 296     [PA_COMMAND_SUBSCRIBE] = command_subscribe,
 297
 298     [PA_COMMAND_SET_SINK_VOLUME] = command_set_volume,
 299     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = command_set_volume,
 300     [PA_COMMAND_SET_SOURCE_VOLUME] = command_set_volume,
 301
 302     [PA_COMMAND_SET_SINK_MUTE] = command_set_mute,
 303     [PA_COMMAND_SET_SINK_INPUT_MUTE] = command_set_mute,
 304     [PA_COMMAND_SET_SOURCE_MUTE] = command_set_mute,
 305
 306     [PA_COMMAND_SUSPEND_SINK] = command_suspend,
 307     [PA_COMMAND_SUSPEND_SOURCE] = command_suspend,
 308
 309     [PA_COMMAND_CORK_PLAYBACK_STREAM] = command_cork_playback_stream,
 310     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 311     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 312     [PA_COMMAND_PREBUF_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 313
 314     [PA_COMMAND_CORK_RECORD_STREAM] = command_cork_record_stream,
 315     [PA_COMMAND_FLUSH_RECORD_STREAM] = command_flush_record_stream,
 316
 317     [PA_COMMAND_SET_DEFAULT_SINK] = command_set_default_sink_or_source,
 318     [PA_COMMAND_SET_DEFAULT_SOURCE] = command_set_default_sink_or_source,
 319     [PA_COMMAND_SET_PLAYBACK_STREAM_NAME] = command_set_stream_name,
 320     [PA_COMMAND_SET_RECORD_STREAM_NAME] = command_set_stream_name,
 321     [PA_COMMAND_KILL_CLIENT] = command_kill,
 322     [PA_COMMAND_KILL_SINK_INPUT] = command_kill,
 323     [PA_COMMAND_KILL_SOURCE_OUTPUT] = command_kill,
 324     [PA_COMMAND_LOAD_MODULE] = command_load_module,
 325     [PA_COMMAND_UNLOAD_MODULE] = command_unload_module,
 326     [PA_COMMAND_GET_AUTOLOAD_INFO] = command_get_autoload_info,
 327     [PA_COMMAND_GET_AUTOLOAD_INFO_LIST] = command_get_autoload_info_list,
 328     [PA_COMMAND_ADD_AUTOLOAD] = command_add_autoload,
 329     [PA_COMMAND_REMOVE_AUTOLOAD] = command_remove_autoload,
 330
 331     [PA_COMMAND_MOVE_SINK_INPUT] = command_move_stream,
 332     [PA_COMMAND_MOVE_SOURCE_OUTPUT] = command_move_stream,
 333
 334     [PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR] = command_set_stream_buffer_attr,
 335     [PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR] = command_set_stream_buffer_attr,
 336
 337     [PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE] = command_update_stream_sample_rate,
 338     [PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE] = command_update_stream_sample_rate
 339 };
 340
 341 /* structure management */
 342
 343 static void upload_stream_unlink(upload_stream *s) {
 344     pa_assert(s);
 345
 346     if (!s->connection)
 347         return;
 348
 349     pa_assert_se(pa_idxset_remove_by_data(s->connection->output_streams, s, NULL) == s);
 350     s->connection = NULL;
 351     upload_stream_unref(s);
 352 }
 353
 354 static void upload_stream_free(pa_object *o) {
 355     upload_stream *s = UPLOAD_STREAM(o);
 356     pa_assert(s);
 357
 358     upload_stream_unlink(s);
 359
 360     pa_xfree(s->name);
 361
 362     if (s->memchunk.memblock)
 363         pa_memblock_unref(s->memchunk.memblock);
 364
 365     pa_xfree(s);
 366 }
 367
 368 static upload_stream* upload_stream_new(
 369         connection *c,
 370         const pa_sample_spec *ss,
 371         const pa_channel_map *map,
 372         const char *name, size_t length) {
 373
 374     upload_stream *s;
 375
 376     pa_assert(c);
 377     pa_assert(ss);
 378     pa_assert(name);
 379     pa_assert(length > 0);
 380
 381     s = pa_msgobject_new(upload_stream);
 382     s->parent.parent.parent.free = upload_stream_free;
 383     s->connection = c;
 384     s->sample_spec = *ss;
 385     s->channel_map = *map;
 386     s->name = pa_xstrdup(name);
 387     pa_memchunk_reset(&s->memchunk);
 388     s->length = length;
 389
 390     pa_idxset_put(c->output_streams, s, &s->index);
 391
 392     return s;
 393 }
 394
 395 static void record_stream_unlink(record_stream *s) {
 396     pa_assert(s);
 397
 398     if (!s->connection)
 399         return;
 400
 401     if (s->source_output) {
 402         pa_source_output_unlink(s->source_output);
 403         pa_source_output_unref(s->source_output);
 404         s->source_output = NULL;
 405     }
 406
 407     pa_assert_se(pa_idxset_remove_by_data(s->connection->record_streams, s, NULL) == s);
 408     s->connection = NULL;
 409     record_stream_unref(s);
 410 }
 411
 412 static void record_stream_free(pa_object *o) {
 413     record_stream *s = RECORD_STREAM(o);
 414     pa_assert(s);
 415
 416     record_stream_unlink(s);
 417
 418     pa_memblockq_free(s->memblockq);
 419     pa_xfree(s);
 420 }
 421
 422 static int record_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 423     record_stream *s = RECORD_STREAM(o);
 424     record_stream_assert_ref(s);
 425
 426     if (!s->connection)
 427         return -1;
 428
 429     switch (code) {
 430
 431         case RECORD_STREAM_MESSAGE_POST_DATA:
 432
 433             if (pa_memblockq_push_align(s->memblockq, chunk) < 0) {
 434 /*                 pa_log_warn("Failed to push data into output queue."); */
 435                 return -1;
 436             }
 437
 438             if (!pa_pstream_is_pending(s->connection->pstream))
 439                 send_memblock(s->connection);
 440
 441             break;
 442     }
 443
 444     return 0;
 445 }
 446
 447 static record_stream* record_stream_new(
 448         connection *c,
 449         pa_source *source,
 450         pa_sample_spec *ss,
 451         pa_channel_map *map,
 452         const char *name,
 453         uint32_t *maxlength,
 454         uint32_t fragment_size,
 455         pa_source_output_flags_t flags) {
 456
 457     record_stream *s;
 458     pa_source_output *source_output;
 459     size_t base;
 460     pa_source_output_new_data data;
 461
 462     pa_assert(c);
 463     pa_assert(ss);
 464     pa_assert(name);
 465     pa_assert(maxlength);
 466     pa_assert(*maxlength > 0);
 467
 468     pa_source_output_new_data_init(&data);
 469     data.module = c->protocol->module;
 470     data.client = c->client;
 471     data.source = source;
 472     data.driver = __FILE__;
 473     data.name = name;
 474     pa_source_output_new_data_set_sample_spec(&data, ss);
 475     pa_source_output_new_data_set_channel_map(&data, map);
 476
 477     if (!(source_output = pa_source_output_new(c->protocol->core, &data, flags)))
 478         return NULL;
 479
 480     s = pa_msgobject_new(record_stream);
 481     s->parent.parent.free = record_stream_free;
 482     s->parent.process_msg = record_stream_process_msg;
 483     s->connection = c;
 484     s->source_output = source_output;
 485     s->source_output->push = source_output_push_cb;
 486     s->source_output->kill = source_output_kill_cb;
 487     s->source_output->get_latency = source_output_get_latency_cb;
 488     s->source_output->moved = source_output_moved_cb;
 489     s->source_output->suspend = source_output_suspend_cb;
 490     s->source_output->userdata = s;
 491
 492     s->memblockq = pa_memblockq_new(
 493             0,
 494             *maxlength,
 495             0,
 496             base = pa_frame_size(&s->source_output->sample_spec),
 497             1,
 498             0,
 499             NULL);
 500
 501     *maxlength = pa_memblockq_get_maxlength(s->memblockq);
 502
 503     s->fragment_size = (fragment_size/base)*base;
 504     if (s->fragment_size <= 0)
 505         s->fragment_size = base;
 506
 507     if (s->fragment_size > *maxlength)
 508         s->fragment_size = *maxlength;
 509
 510     *ss = s->source_output->sample_spec;
 511     *map = s->source_output->channel_map;
 512
 513     pa_idxset_put(c->record_streams, s, &s->index);
 514
 515     pa_source_output_put(s->source_output);
 516     return s;
 517 }
 518
 519 static void playback_stream_unlink(playback_stream *s) {
 520     pa_assert(s);
 521
 522     if (!s->connection)
 523         return;
 524
 525     if (s->sink_input) {
 526         pa_sink_input_unlink(s->sink_input);
 527         pa_sink_input_unref(s->sink_input);
 528         s->sink_input = NULL;
 529     }
 530
 531     if (s->drain_request)
 532         pa_pstream_send_error(s->connection->pstream, s->drain_tag, PA_ERR_NOENTITY);
 533
 534     pa_assert_se(pa_idxset_remove_by_data(s->connection->output_streams, s, NULL) == s);
 535     s->connection = NULL;
 536     playback_stream_unref(s);
 537 }
 538
 539 static void playback_stream_free(pa_object* o) {
 540     playback_stream *s = PLAYBACK_STREAM(o);
 541     pa_assert(s);
 542
 543     playback_stream_unlink(s);
 544
 545     pa_memblockq_free(s->memblockq);
 546     pa_xfree(s);
 547 }
 548
 549 static int playback_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 550     playback_stream *s = PLAYBACK_STREAM(o);
 551     playback_stream_assert_ref(s);
 552
 553     if (!s->connection)
 554         return -1;
 555
 556     switch (code) {
 557         case PLAYBACK_STREAM_MESSAGE_REQUEST_DATA: {
 558             pa_tagstruct *t;
 559             uint32_t l = 0;
 560
 561             for (;;) {
 562                 int32_t k;
 563
 564                 if ((k = pa_atomic_load(&s->missing)) <= 0)
 565                     break;
 566
 567                 l += k;
 568
 569                 if (l < s->minreq)
 570                     break;
 571
 572                 if (pa_atomic_sub(&s->missing, k) <= k)
 573                     break;
 574             }
 575
 576             if (l < s->minreq)
 577                 break;
 578
 579             t = pa_tagstruct_new(NULL, 0);
 580             pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 581             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 582             pa_tagstruct_putu32(t, s->index);
 583             pa_tagstruct_putu32(t, l);
 584             pa_pstream_send_tagstruct(s->connection->pstream, t);
 585
 586 /*             pa_log("Requesting %u bytes", l);     */
 587             break;
 588         }
 589
 590         case PLAYBACK_STREAM_MESSAGE_UNDERFLOW: {
 591             pa_tagstruct *t;
 592
 593             /* Report that we're empty */
 594             t = pa_tagstruct_new(NULL, 0);
 595             pa_tagstruct_putu32(t, PA_COMMAND_UNDERFLOW);
 596             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 597             pa_tagstruct_putu32(t, s->index);
 598             pa_pstream_send_tagstruct(s->connection->pstream, t);
 599             break;
 600         }
 601
 602         case PLAYBACK_STREAM_MESSAGE_OVERFLOW: {
 603             pa_tagstruct *t;
 604
 605             /* Notify the user we're overflowed*/
 606             t = pa_tagstruct_new(NULL, 0);
 607             pa_tagstruct_putu32(t, PA_COMMAND_OVERFLOW);
 608             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 609             pa_tagstruct_putu32(t, s->index);
 610             pa_pstream_send_tagstruct(s->connection->pstream, t);
 611             break;
 612         }
 613
 614         case PLAYBACK_STREAM_MESSAGE_DRAIN_ACK:
 615             pa_pstream_send_simple_ack(s->connection->pstream, PA_PTR_TO_UINT(userdata));
 616             break;
 617
 618     }
 619
 620     return 0;
 621 }
 622
 623 static playback_stream* playback_stream_new(
 624         connection *c,
 625         pa_sink *sink,
 626         pa_sample_spec *ss,
 627         pa_channel_map *map,
 628         const char *name,
 629         uint32_t *maxlength,
 630         uint32_t *tlength,
 631         uint32_t *prebuf,
 632         uint32_t *minreq,
 633         pa_cvolume *volume,
 634         uint32_t syncid,
 635         uint32_t *missing,
 636         pa_sink_input_flags_t flags) {
 637
 638     playback_stream *s, *ssync;
 639     pa_sink_input *sink_input;
 640     pa_memblock *silence;
 641     uint32_t idx;
 642     int64_t start_index;
 643     pa_sink_input_new_data data;
 644
 645     pa_assert(c);
 646     pa_assert(ss);
 647     pa_assert(name);
 648     pa_assert(maxlength);
 649
 650     /* Find syncid group */
 651     for (ssync = pa_idxset_first(c->output_streams, &idx); ssync; ssync = pa_idxset_next(c->output_streams, &idx)) {
 652
 653         if (!playback_stream_isinstance(ssync))
 654             continue;
 655
 656         if (ssync->syncid == syncid)
 657             break;
 658     }
 659
 660     /* Synced streams must connect to the same sink */
 661     if (ssync) {
 662
 663         if (!sink)
 664             sink = ssync->sink_input->sink;
 665         else if (sink != ssync->sink_input->sink)
 666             return NULL;
 667     }
 668
 669     pa_sink_input_new_data_init(&data);
 670     data.sink = sink;
 671     data.driver = __FILE__;
 672     data.name = name;
 673     pa_sink_input_new_data_set_sample_spec(&data, ss);
 674     pa_sink_input_new_data_set_channel_map(&data, map);
 675     pa_sink_input_new_data_set_volume(&data, volume);
 676     data.module = c->protocol->module;
 677     data.client = c->client;
 678     data.sync_base = ssync ? ssync->sink_input : NULL;
 679
 680     if (!(sink_input = pa_sink_input_new(c->protocol->core, &data, flags)))
 681         return NULL;
 682
 683     s = pa_msgobject_new(playback_stream);
 684     s->parent.parent.parent.free = playback_stream_free;
 685     s->parent.parent.process_msg = playback_stream_process_msg;
 686     s->connection = c;
 687     s->syncid = syncid;
 688     s->sink_input = sink_input;
 689     s->underrun = 1;
 690
 691     s->sink_input->parent.process_msg = sink_input_process_msg;
 692     s->sink_input->peek = sink_input_peek_cb;
 693     s->sink_input->drop = sink_input_drop_cb;
 694     s->sink_input->kill = sink_input_kill_cb;
 695     s->sink_input->moved = sink_input_moved_cb;
 696     s->sink_input->suspend = sink_input_suspend_cb;
 697     s->sink_input->userdata = s;
 698
 699     start_index = ssync ? pa_memblockq_get_read_index(ssync->memblockq) : 0;
 700
 701     silence = pa_silence_memblock_new(c->protocol->core->mempool, &s->sink_input->sample_spec, 0);
 702
 703     s->memblockq = pa_memblockq_new(
 704             start_index,
 705             *maxlength,
 706             *tlength,
 707             pa_frame_size(&s->sink_input->sample_spec),
 708             *prebuf,
 709             *minreq,
 710             silence);
 711
 712     pa_memblock_unref(silence);
 713
 714     *maxlength = (uint32_t) pa_memblockq_get_maxlength(s->memblockq);
 715     *tlength = (uint32_t) pa_memblockq_get_tlength(s->memblockq);
 716     *prebuf = (uint32_t) pa_memblockq_get_prebuf(s->memblockq);
 717     *minreq = (uint32_t) pa_memblockq_get_minreq(s->memblockq);
 718     *missing = (uint32_t) pa_memblockq_pop_missing(s->memblockq);
 719
 720     *ss = s->sink_input->sample_spec;
 721     *map = s->sink_input->channel_map;
 722
 723     s->minreq = pa_memblockq_get_minreq(s->memblockq);
 724     pa_atomic_store(&s->missing, 0);
 725     s->drain_request = 0;
 726
 727     pa_idxset_put(c->output_streams, s, &s->index);
 728
 729     pa_sink_input_put(s->sink_input);
 730
 731     return s;
 732 }
 733
 734 static int connection_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 735     connection *c = CONNECTION(o);
 736     connection_assert_ref(c);
 737
 738     if (!c->protocol)
 739         return -1;
 740
 741     switch (code) {
 742
 743         case CONNECTION_MESSAGE_REVOKE:
 744             pa_pstream_send_revoke(c->pstream, PA_PTR_TO_UINT(userdata));
 745             break;
 746
 747         case CONNECTION_MESSAGE_RELEASE:
 748             pa_pstream_send_release(c->pstream, PA_PTR_TO_UINT(userdata));
 749             break;
 750     }
 751
 752     return 0;
 753 }
 754
 755 static void connection_unlink(connection *c) {
 756     record_stream *r;
 757     output_stream *o;
 758
 759     pa_assert(c);
 760
 761     if (!c->protocol)
 762         return;
 763
 764     while ((r = pa_idxset_first(c->record_streams, NULL)))
 765         record_stream_unlink(r);
 766
 767     while ((o = pa_idxset_first(c->output_streams, NULL)))
 768         if (playback_stream_isinstance(o))
 769             playback_stream_unlink(PLAYBACK_STREAM(o));
 770         else
 771             upload_stream_unlink(UPLOAD_STREAM(o));
 772
 773     if (c->subscription)
 774         pa_subscription_free(c->subscription);
 775
 776     if (c->pstream)
 777         pa_pstream_unlink(c->pstream);
 778
 779     if (c->auth_timeout_event) {
 780         c->protocol->core->mainloop->time_free(c->auth_timeout_event);
 781         c->auth_timeout_event = NULL;
 782     }
 783
 784     pa_assert_se(pa_idxset_remove_by_data(c->protocol->connections, c, NULL) == c);
 785     c->protocol = NULL;
 786     connection_unref(c);
 787 }
 788
 789 static void connection_free(pa_object *o) {
 790     connection *c = CONNECTION(o);
 791
 792     pa_assert(c);
 793
 794     connection_unlink(c);
 795
 796     pa_idxset_free(c->record_streams, NULL, NULL);
 797     pa_idxset_free(c->output_streams, NULL, NULL);
 798
 799     pa_pdispatch_unref(c->pdispatch);
 800     pa_pstream_unref(c->pstream);
 801     pa_client_free(c->client);
 802
 803     pa_xfree(c);
 804 }
 805
 806 /* Called from thread context */
 807 static void request_bytes(playback_stream *s) {
 808     size_t m, previous_missing;
 809
 810     playback_stream_assert_ref(s);
 811
 812     m = pa_memblockq_pop_missing(s->memblockq);
 813
 814     if (m <= 0)
 815         return;
 816
 817 /*     pa_log("request_bytes(%u)", m); */
 818
 819     previous_missing = pa_atomic_add(&s->missing, m);
 820     if (previous_missing < s->minreq && previous_missing+m >= s->minreq) {
 821         pa_assert(pa_thread_mq_get());
 822         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_REQUEST_DATA, NULL, 0, NULL, NULL);
 823     }
 824 }
 825
 826 static void send_memblock(connection *c) {
 827     uint32_t start;
 828     record_stream *r;
 829
 830     start = PA_IDXSET_INVALID;
 831     for (;;) {
 832         pa_memchunk chunk;
 833
 834         if (!(r = RECORD_STREAM(pa_idxset_rrobin(c->record_streams, &c->rrobin_index))))
 835             return;
 836
 837         if (start == PA_IDXSET_INVALID)
 838             start = c->rrobin_index;
 839         else if (start == c->rrobin_index)
 840             return;
 841
 842         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
 843             pa_memchunk schunk = chunk;
 844
 845             if (schunk.length > r->fragment_size)
 846                 schunk.length = r->fragment_size;
 847
 848             pa_pstream_send_memblock(c->pstream, r->index, 0, PA_SEEK_RELATIVE, &schunk);
 849
 850             pa_memblockq_drop(r->memblockq, schunk.length);
 851             pa_memblock_unref(schunk.memblock);
 852
 853             return;
 854         }
 855     }
 856 }
 857
 858 static void send_playback_stream_killed(playback_stream *p) {
 859     pa_tagstruct *t;
 860     playback_stream_assert_ref(p);
 861
 862     t = pa_tagstruct_new(NULL, 0);
 863     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
 864     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 865     pa_tagstruct_putu32(t, p->index);
 866     pa_pstream_send_tagstruct(p->connection->pstream, t);
 867 }
 868
 869 static void send_record_stream_killed(record_stream *r) {
 870     pa_tagstruct *t;
 871     record_stream_assert_ref(r);
 872
 873     t = pa_tagstruct_new(NULL, 0);
 874     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
 875     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 876     pa_tagstruct_putu32(t, r->index);
 877     pa_pstream_send_tagstruct(r->connection->pstream, t);
 878 }
 879
 880 /*** sink input callbacks ***/
 881
 882 /* Called from thread context */
 883 static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 884     pa_sink_input *i = PA_SINK_INPUT(o);
 885     playback_stream *s;
 886
 887     pa_sink_input_assert_ref(i);
 888     s = PLAYBACK_STREAM(i->userdata);
 889     playback_stream_assert_ref(s);
 890
 891     switch (code) {
 892
 893         case SINK_INPUT_MESSAGE_SEEK:
 894             pa_memblockq_seek(s->memblockq, offset, PA_PTR_TO_UINT(userdata));
 895             request_bytes(s);
 896             return 0;
 897
 898         case SINK_INPUT_MESSAGE_POST_DATA: {
 899             pa_assert(chunk);
 900
 901 /*             pa_log("sink input post: %u", chunk->length); */
 902
 903             if (pa_memblockq_push_align(s->memblockq, chunk) < 0) {
 904
 905                 pa_log_warn("Failed to push data into queue");
 906                 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_OVERFLOW, NULL, 0, NULL, NULL);
 907                 pa_memblockq_seek(s->memblockq, chunk->length, PA_SEEK_RELATIVE);
 908             }
 909
 910             request_bytes(s);
 911
 912             s->underrun = 0;
 913             return 0;
 914         }
 915
 916         case SINK_INPUT_MESSAGE_DRAIN: {
 917
 918             pa_memblockq_prebuf_disable(s->memblockq);
 919
 920             if (!pa_memblockq_is_readable(s->memblockq))
 921                 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_DRAIN_ACK, userdata, 0, NULL, NULL);
 922             else {
 923                 s->drain_tag = PA_PTR_TO_UINT(userdata);
 924                 s->drain_request = 1;
 925             }
 926             request_bytes(s);
 927
 928             return 0;
 929         }
 930
 931         case SINK_INPUT_MESSAGE_FLUSH:
 932         case SINK_INPUT_MESSAGE_PREBUF_FORCE:
 933         case SINK_INPUT_MESSAGE_TRIGGER: {
 934
 935             pa_sink_input *isync;
 936             void (*func)(pa_memblockq *bq);
 937
 938             switch  (code) {
 939                 case SINK_INPUT_MESSAGE_FLUSH:
 940                     func = pa_memblockq_flush;
 941                     break;
 942
 943                 case SINK_INPUT_MESSAGE_PREBUF_FORCE:
 944                     func = pa_memblockq_prebuf_force;
 945                     break;
 946
 947                 case SINK_INPUT_MESSAGE_TRIGGER:
 948                     func = pa_memblockq_prebuf_disable;
 949                     break;
 950
 951                 default:
 952                     pa_assert_not_reached();
 953             }
 954
 955             func(s->memblockq);
 956             s->underrun = 0;
 957             request_bytes(s);
 958
 959             /* Do the same for all other members in the sync group */
 960             for (isync = i->sync_prev; isync; isync = isync->sync_prev) {
 961                 playback_stream *ssync = PLAYBACK_STREAM(isync->userdata);
 962                 func(ssync->memblockq);
 963                 ssync->underrun = 0;
 964                 request_bytes(ssync);
 965             }
 966
 967             for (isync = i->sync_next; isync; isync = isync->sync_next) {
 968                 playback_stream *ssync = PLAYBACK_STREAM(isync->userdata);
 969                 func(ssync->memblockq);
 970                 ssync->underrun = 0;
 971                 request_bytes(ssync);
 972             }
 973
 974             return 0;
 975         }
 976
 977         case SINK_INPUT_MESSAGE_UPDATE_LATENCY:
 978
 979             s->read_index = pa_memblockq_get_read_index(s->memblockq);
 980             s->write_index = pa_memblockq_get_write_index(s->memblockq);
 981             s->resampled_chunk_length = s->sink_input->thread_info.resampled_chunk.memblock ? s->sink_input->thread_info.resampled_chunk.length : 0;
 982             return 0;
 983
 984         case PA_SINK_INPUT_MESSAGE_SET_STATE:
 985
 986             pa_memblockq_prebuf_force(s->memblockq);
 987             request_bytes(s);
 988             break;
 989
 990         case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
 991             pa_usec_t *r = userdata;
 992
 993             *r = pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &i->sample_spec);
 994
 995             /* Fall through, the default handler will add in the extra
 996              * latency added by the resampler */
 997             break;
 998         }
 999     }
1000
1001     return pa_sink_input_process_msg(o, code, userdata, offset, chunk);
1002 }
1003
1004 /* Called from thread context */
1005 static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
1006     playback_stream *s;
1007
1008     pa_sink_input_assert_ref(i);
1009     s = PLAYBACK_STREAM(i->userdata);
1010     playback_stream_assert_ref(s);
1011     pa_assert(chunk);
1012
1013     if (pa_memblockq_get_length(s->memblockq) <= 0 && !s->underrun) {
1014         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_UNDERFLOW, NULL, 0, NULL, NULL);
1015         s->underrun = 1;
1016     }
1017
1018     if (pa_memblockq_peek(s->memblockq, chunk) < 0) {
1019 /*         pa_log("peek: failure");     */
1020         return -1;
1021     }
1022
1023 /*     pa_log("peek: %u", chunk->length); */
1024
1025     request_bytes(s);
1026
1027     return 0;
1028 }
1029
1030 /* Called from thread context */
1031 static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
1032     playback_stream *s;
1033
1034     pa_sink_input_assert_ref(i);
1035     s = PLAYBACK_STREAM(i->userdata);
1036     playback_stream_assert_ref(s);
1037     pa_assert(length > 0);
1038
1039     pa_memblockq_drop(s->memblockq, length);
1040
1041     if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
1042         s->drain_request = 0;
1043         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_DRAIN_ACK, PA_UINT_TO_PTR(s->drain_tag), 0, NULL, NULL);
1044     }
1045
1046     request_bytes(s);
1047
1048 /*     pa_log("after_drop: %u %u", pa_memblockq_get_length(s->memblockq), pa_memblockq_is_readable(s->memblockq)); */
1049 }
1050
1051 /* Called from main context */
1052 static void sink_input_kill_cb(pa_sink_input *i) {
1053     playback_stream *s;
1054
1055     pa_sink_input_assert_ref(i);
1056     s = PLAYBACK_STREAM(i->userdata);
1057     playback_stream_assert_ref(s);
1058
1059     send_playback_stream_killed(s);
1060     playback_stream_unlink(s);
1061 }
1062
1063 /* Called from main context */
1064 static void sink_input_suspend_cb(pa_sink_input *i, pa_bool_t suspend) {
1065     playback_stream *s;
1066     pa_tagstruct *t;
1067
1068     pa_sink_input_assert_ref(i);
1069     s = PLAYBACK_STREAM(i->userdata);
1070     playback_stream_assert_ref(s);
1071
1072     if (s->connection->version < 12)
1073       return;
1074
1075     t = pa_tagstruct_new(NULL, 0);
1076     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_SUSPENDED);
1077     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1078     pa_tagstruct_putu32(t, s->index);
1079     pa_tagstruct_put_boolean(t, suspend);
1080     pa_pstream_send_tagstruct(s->connection->pstream, t);
1081 }
1082
1083 /* Called from main context */
1084 static void sink_input_moved_cb(pa_sink_input *i) {
1085     playback_stream *s;
1086     pa_tagstruct *t;
1087
1088     pa_sink_input_assert_ref(i);
1089     s = PLAYBACK_STREAM(i->userdata);
1090     playback_stream_assert_ref(s);
1091
1092     if (s->connection->version < 12)
1093       return;
1094
1095     t = pa_tagstruct_new(NULL, 0);
1096     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_MOVED);
1097     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1098     pa_tagstruct_putu32(t, s->index);
1099     pa_tagstruct_putu32(t, i->sink->index);
1100     pa_tagstruct_puts(t, i->sink->name);
1101     pa_tagstruct_put_boolean(t, pa_sink_get_state(i->sink) == PA_SINK_SUSPENDED);
1102     pa_pstream_send_tagstruct(s->connection->pstream, t);
1103 }
1104
1105 /*** source_output callbacks ***/
1106
1107 /* Called from thread context */
1108 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
1109     record_stream *s;
1110
1111     pa_source_output_assert_ref(o);
1112     s = RECORD_STREAM(o->userdata);
1113     record_stream_assert_ref(s);
1114     pa_assert(chunk);
1115
1116     pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), RECORD_STREAM_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
1117 }
1118
1119 static void source_output_kill_cb(pa_source_output *o) {
1120     record_stream *s;
1121
1122     pa_source_output_assert_ref(o);
1123     s = RECORD_STREAM(o->userdata);
1124     record_stream_assert_ref(s);
1125
1126     send_record_stream_killed(s);
1127     record_stream_unlink(s);
1128 }
1129
1130 static pa_usec_t source_output_get_latency_cb(pa_source_output *o) {
1131     record_stream *s;
1132
1133     pa_source_output_assert_ref(o);
1134     s = RECORD_STREAM(o->userdata);
1135     record_stream_assert_ref(s);
1136
1137     /*pa_log("get_latency: %u", pa_memblockq_get_length(s->memblockq));*/
1138
1139     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &o->sample_spec);
1140 }
1141
1142 /* Called from main context */
1143 static void source_output_suspend_cb(pa_source_output *o, pa_bool_t suspend) {
1144     record_stream *s;
1145     pa_tagstruct *t;
1146
1147     pa_source_output_assert_ref(o);
1148     s = RECORD_STREAM(o->userdata);
1149     record_stream_assert_ref(s);
1150
1151     if (s->connection->version < 12)
1152       return;
1153
1154     t = pa_tagstruct_new(NULL, 0);
1155     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_SUSPENDED);
1156     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1157     pa_tagstruct_putu32(t, s->index);
1158     pa_tagstruct_put_boolean(t, suspend);
1159     pa_pstream_send_tagstruct(s->connection->pstream, t);
1160 }
1161
1162 /* Called from main context */
1163 static void source_output_moved_cb(pa_source_output *o) {
1164     record_stream *s;
1165     pa_tagstruct *t;
1166
1167     pa_source_output_assert_ref(o);
1168     s = RECORD_STREAM(o->userdata);
1169     record_stream_assert_ref(s);
1170
1171     if (s->connection->version < 12)
1172       return;
1173
1174     t = pa_tagstruct_new(NULL, 0);
1175     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_MOVED);
1176     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1177     pa_tagstruct_putu32(t, s->index);
1178     pa_tagstruct_putu32(t, o->source->index);
1179     pa_tagstruct_puts(t, o->source->name);
1180     pa_tagstruct_put_boolean(t, pa_source_get_state(o->source) == PA_SOURCE_SUSPENDED);
1181     pa_pstream_send_tagstruct(s->connection->pstream, t);
1182 }
1183
1184 /*** pdispatch callbacks ***/
1185
1186 static void protocol_error(connection *c) {
1187     pa_log("protocol error, kicking client");
1188     connection_unlink(c);
1189 }
1190
1191 #define CHECK_VALIDITY(pstream, expression, tag, error) do { \
1192 if (!(expression)) { \
1193     pa_pstream_send_error((pstream), (tag), (error)); \
1194     return; \
1195 } \
1196 } while(0);
1197
1198 static pa_tagstruct *reply_new(uint32_t tag) {
1199     pa_tagstruct *reply;
1200
1201     reply = pa_tagstruct_new(NULL, 0);
1202     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1203     pa_tagstruct_putu32(reply, tag);
1204     return reply;
1205 }
1206
1207 static void command_create_playback_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1208     connection *c = CONNECTION(userdata);
1209     playback_stream *s;
1210     uint32_t maxlength, tlength, prebuf, minreq, sink_index, syncid, missing;
1211     const char *name, *sink_name;
1212     pa_sample_spec ss;
1213     pa_channel_map map;
1214     pa_tagstruct *reply;
1215     pa_sink *sink = NULL;
1216     pa_cvolume volume;
1217     int corked;
1218     int no_remap = 0, no_remix = 0, fix_format = 0, fix_rate = 0, fix_channels = 0, no_move = 0, variable_rate = 0;
1219     pa_sink_input_flags_t flags = 0;
1220
1221     connection_assert_ref(c);
1222     pa_assert(t);
1223
1224     if (pa_tagstruct_get(
1225             t,
1226             PA_TAG_STRING, &name,
1227             PA_TAG_SAMPLE_SPEC, &ss,
1228             PA_TAG_CHANNEL_MAP, &map,
1229             PA_TAG_U32, &sink_index,
1230             PA_TAG_STRING, &sink_name,
1231             PA_TAG_U32, &maxlength,
1232             PA_TAG_BOOLEAN, &corked,
1233             PA_TAG_U32, &tlength,
1234             PA_TAG_U32, &prebuf,
1235             PA_TAG_U32, &minreq,
1236             PA_TAG_U32, &syncid,
1237             PA_TAG_CVOLUME, &volume,
1238             PA_TAG_INVALID) < 0 || !name) {
1239         protocol_error(c);
1240         return;
1241     }
1242
1243     if (c->version >= 12)  {
1244         /* Since 0.9.8 the user can ask for a couple of additional flags */
1245
1246         if (pa_tagstruct_get_boolean(t, &no_remap) < 0 ||
1247             pa_tagstruct_get_boolean(t, &no_remix) < 0 ||
1248             pa_tagstruct_get_boolean(t, &fix_format) < 0 ||
1249             pa_tagstruct_get_boolean(t, &fix_rate) < 0 ||
1250             pa_tagstruct_get_boolean(t, &fix_channels) < 0 ||
1251             pa_tagstruct_get_boolean(t, &no_move) < 0 ||
1252             pa_tagstruct_get_boolean(t, &variable_rate) < 0) {
1253             protocol_error(c);
1254             return;
1255         }
1256     }
1257
1258     if (!pa_tagstruct_eof(t)) {
1259         protocol_error(c);
1260         return;
1261     }
1262
1263     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1264     CHECK_VALIDITY(c->pstream, name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1265     CHECK_VALIDITY(c->pstream, sink_index != PA_INVALID_INDEX || !sink_name || (*sink_name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
1266     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
1267     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
1268     CHECK_VALIDITY(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID);
1269     CHECK_VALIDITY(c->pstream, map.channels == ss.channels && volume.channels == ss.channels, tag, PA_ERR_INVALID);
1270     CHECK_VALIDITY(c->pstream, maxlength > 0, tag, PA_ERR_INVALID);
1271     CHECK_VALIDITY(c->pstream, maxlength <= MAX_MEMBLOCKQ_LENGTH, tag, PA_ERR_INVALID);
1272
1273     if (sink_index != PA_INVALID_INDEX) {
1274         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
1275         CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
1276     } else if (sink_name) {
1277         sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK, 1);
1278         CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
1279     }
1280
1281     flags =
1282         (corked ?  PA_SINK_INPUT_START_CORKED : 0) |
1283         (no_remap ?  PA_SINK_INPUT_NO_REMAP : 0) |
1284         (no_remix ?  PA_SINK_INPUT_NO_REMIX : 0) |
1285         (fix_format ?  PA_SINK_INPUT_FIX_FORMAT : 0) |
1286         (fix_rate ?  PA_SINK_INPUT_FIX_RATE : 0) |
1287         (fix_channels ?  PA_SINK_INPUT_FIX_CHANNELS : 0) |
1288         (no_move ?  PA_SINK_INPUT_DONT_MOVE : 0) |
1289         (variable_rate ?  PA_SINK_INPUT_VARIABLE_RATE : 0);
1290
1291     s = playback_stream_new(c, sink, &ss, &map, name, &maxlength, &tlength, &prebuf, &minreq, &volume, syncid, &missing, flags);
1292     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
1293
1294     reply = reply_new(tag);
1295     pa_tagstruct_putu32(reply, s->index);
1296     pa_assert(s->sink_input);
1297     pa_tagstruct_putu32(reply, s->sink_input->index);
1298     pa_tagstruct_putu32(reply, missing);
1299
1300 /*     pa_log("initial request is %u", missing); */
1301
1302     if (c->version >= 9) {
1303         /* Since 0.9.0 we support sending the buffer metrics back to the client */
1304
1305         pa_tagstruct_putu32(reply, (uint32_t) maxlength);
1306         pa_tagstruct_putu32(reply, (uint32_t) tlength);
1307         pa_tagstruct_putu32(reply, (uint32_t) prebuf);
1308         pa_tagstruct_putu32(reply, (uint32_t) minreq);
1309     }
1310
1311     if (c->version >= 12) {
1312         /* Since 0.9.8 we support sending the chosen sample
1313          * spec/channel map/device/suspend status back to the
1314          * client */
1315
1316         pa_tagstruct_put_sample_spec(reply, &ss);
1317         pa_tagstruct_put_channel_map(reply, &map);
1318
1319         pa_tagstruct_putu32(reply, s->sink_input->sink->index);
1320         pa_tagstruct_puts(reply, s->sink_input->sink->name);
1321
1322         pa_tagstruct_put_boolean(reply, pa_sink_get_state(s->sink_input->sink) == PA_SINK_SUSPENDED);
1323     }
1324
1325     pa_pstream_send_tagstruct(c->pstream, reply);
1326 }
1327
1328 static void command_delete_stream(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1329     connection *c = CONNECTION(userdata);
1330     uint32_t channel;
1331
1332     connection_assert_ref(c);
1333     pa_assert(t);
1334
1335     if (pa_tagstruct_getu32(t, &channel) < 0 ||
1336         !pa_tagstruct_eof(t)) {
1337         protocol_error(c);
1338         return;
1339     }
1340
1341     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1342
1343     switch (command) {
1344
1345         case PA_COMMAND_DELETE_PLAYBACK_STREAM: {
1346             playback_stream *s;
1347             if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || !playback_stream_isinstance(s)) {
1348                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
1349                 return;
1350             }
1351
1352             playback_stream_unlink(s);
1353             break;
1354         }
1355
1356         case PA_COMMAND_DELETE_RECORD_STREAM: {
1357             record_stream *s;
1358             if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
1359                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
1360                 return;
1361             }
1362
1363             record_stream_unlink(s);
1364             break;
1365         }
1366
1367         case PA_COMMAND_DELETE_UPLOAD_STREAM: {
1368             upload_stream *s;
1369
1370             if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || !upload_stream_isinstance(s)) {
1371                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
1372                 return;
1373             }
1374
1375             upload_stream_unlink(s);
1376             break;
1377         }
1378
1379         default:
1380             pa_assert_not_reached();
1381     }
1382
1383     pa_pstream_send_simple_ack(c->pstream, tag);
1384 }
1385
1386 static void command_create_record_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1387     connection *c = CONNECTION(userdata);
1388     record_stream *s;
1389     uint32_t maxlength, fragment_size;
1390     uint32_t source_index;
1391     const char *name, *source_name;
1392     pa_sample_spec ss;
1393     pa_channel_map map;
1394     pa_tagstruct *reply;
1395     pa_source *source = NULL;
1396     int corked;
1397     int no_remap = 0, no_remix = 0, fix_format = 0, fix_rate = 0, fix_channels = 0, no_move = 0, variable_rate = 0;
1398     pa_source_output_flags_t flags = 0;
1399
1400     connection_assert_ref(c);
1401     pa_assert(t);
1402
1403     if (pa_tagstruct_gets(t, &name) < 0 ||
1404         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
1405         pa_tagstruct_get_channel_map(t, &map) < 0 ||
1406         pa_tagstruct_getu32(t, &source_index) < 0 ||
1407         pa_tagstruct_gets(t, &source_name) < 0 ||
1408         pa_tagstruct_getu32(t, &maxlength) < 0 ||
1409         pa_tagstruct_get_boolean(t, &corked) < 0 ||
1410         pa_tagstruct_getu32(t, &fragment_size) < 0) {
1411         protocol_error(c);
1412         return;
1413     }
1414
1415     if (c->version >= 12)  {
1416         /* Since 0.9.8 the user can ask for a couple of additional flags */
1417
1418         if (pa_tagstruct_get_boolean(t, &no_remap) < 0 ||
1419             pa_tagstruct_get_boolean(t, &no_remix) < 0 ||
1420             pa_tagstruct_get_boolean(t, &fix_format) < 0 ||
1421             pa_tagstruct_get_boolean(t, &fix_rate) < 0 ||
1422             pa_tagstruct_get_boolean(t, &fix_channels) < 0 ||
1423             pa_tagstruct_get_boolean(t, &no_move) < 0 ||
1424             pa_tagstruct_get_boolean(t, &variable_rate) < 0) {
1425             protocol_error(c);
1426             return;
1427         }
1428     }
1429
1430     if (!pa_tagstruct_eof(t)) {
1431         protocol_error(c);
1432         return;
1433     }
1434
1435     flags =
1436         (corked ?  PA_SOURCE_OUTPUT_START_CORKED : 0) |
1437         (no_remap ?  PA_SOURCE_OUTPUT_NO_REMAP : 0) |
1438         (no_remix ?  PA_SOURCE_OUTPUT_NO_REMIX : 0) |
1439         (fix_format ?  PA_SOURCE_OUTPUT_FIX_FORMAT : 0) |
1440         (fix_rate ?  PA_SOURCE_OUTPUT_FIX_RATE : 0) |
1441         (fix_channels ?  PA_SOURCE_OUTPUT_FIX_CHANNELS : 0) |
1442         (no_move ?  PA_SOURCE_OUTPUT_DONT_MOVE : 0) |
1443         (variable_rate ?  PA_SOURCE_OUTPUT_VARIABLE_RATE : 0);
1444
1445     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1446     CHECK_VALIDITY(c->pstream, name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1447     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
1448     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
1449     CHECK_VALIDITY(c->pstream, source_index != PA_INVALID_INDEX || !source_name || (*source_name && pa_utf8_valid(source_name)), tag, PA_ERR_INVALID);
1450     CHECK_VALIDITY(c->pstream, map.channels == ss.channels, tag, PA_ERR_INVALID);
1451     CHECK_VALIDITY(c->pstream, maxlength > 0, tag, PA_ERR_INVALID);
1452     CHECK_VALIDITY(c->pstream, maxlength <= MAX_MEMBLOCKQ_LENGTH, tag, PA_ERR_INVALID);
1453
1454     if (source_index != PA_INVALID_INDEX) {
1455         source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
1456         CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
1457     } else if (source_name) {
1458         source = pa_namereg_get(c->protocol->core, source_name, PA_NAMEREG_SOURCE, 1);
1459         CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
1460     }
1461
1462     s = record_stream_new(c, source, &ss, &map, name, &maxlength, fragment_size, flags);
1463     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
1464
1465     reply = reply_new(tag);
1466     pa_tagstruct_putu32(reply, s->index);
1467     pa_assert(s->source_output);
1468     pa_tagstruct_putu32(reply, s->source_output->index);
1469
1470     if (c->version >= 9) {
1471         /* Since 0.9 we support sending the buffer metrics back to the client */
1472
1473         pa_tagstruct_putu32(reply, (uint32_t) maxlength);
1474         pa_tagstruct_putu32(reply, (uint32_t) s->fragment_size);
1475     }
1476
1477     if (c->version >= 12) {
1478         /* Since 0.9.8 we support sending the chosen sample
1479          * spec/channel map/device/suspend status back to the
1480          * client */
1481
1482         pa_tagstruct_put_sample_spec(reply, &ss);
1483         pa_tagstruct_put_channel_map(reply, &map);
1484
1485         pa_tagstruct_putu32(reply, s->source_output->source->index);
1486         pa_tagstruct_puts(reply, s->source_output->source->name);
1487
1488         pa_tagstruct_put_boolean(reply, pa_source_get_state(s->source_output->source) == PA_SOURCE_SUSPENDED);
1489     }
1490
1491     pa_pstream_send_tagstruct(c->pstream, reply);
1492 }
1493
1494 static void command_exit(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1495     connection *c = CONNECTION(userdata);
1496
1497     connection_assert_ref(c);
1498     pa_assert(t);
1499
1500     if (!pa_tagstruct_eof(t)) {
1501         protocol_error(c);
1502         return;
1503     }
1504
1505     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1506
1507     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
1508     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
1509 }
1510
1511 static void command_auth(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1512     connection *c = CONNECTION(userdata);
1513     const void*cookie;
1514     pa_tagstruct *reply;
1515
1516     connection_assert_ref(c);
1517     pa_assert(t);
1518
1519     if (pa_tagstruct_getu32(t, &c->version) < 0 ||
1520         pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
1521         !pa_tagstruct_eof(t)) {
1522         protocol_error(c);
1523         return;
1524     }
1525
1526     /* Minimum supported version */
1527     if (c->version < 8) {
1528         pa_pstream_send_error(c->pstream, tag, PA_ERR_VERSION);
1529         return;
1530     }
1531
1532     if (!c->authorized) {
1533         int success = 0;
1534
1535 #ifdef HAVE_CREDS
1536         const pa_creds *creds;
1537
1538         if ((creds = pa_pdispatch_creds(pd))) {
1539             if (creds->uid == getuid())
1540                 success = 1;
1541             else if (c->protocol->auth_group) {
1542                 int r;
1543                 gid_t gid;
1544
1545                 if ((gid = pa_get_gid_of_group(c->protocol->auth_group)) == (gid_t) -1)
1546                     pa_log_warn("failed to get GID of group '%s'", c->protocol->auth_group);
1547                 else if (gid == creds->gid)
1548                     success = 1;
1549
1550                 if (!success) {
1551                     if ((r = pa_uid_in_group(creds->uid, c->protocol->auth_group)) < 0)
1552                         pa_log_warn("failed to check group membership.");
1553                     else if (r > 0)
1554                         success = 1;
1555                 }
1556             }
1557
1558             pa_log_info("Got credentials: uid=%lu gid=%lu success=%i",
1559                         (unsigned long) creds->uid,
1560                         (unsigned long) creds->gid,
1561                         success);
1562
1563             if (c->version >= 10 &&
1564                 pa_mempool_is_shared(c->protocol->core->mempool) &&
1565                 creds->uid == getuid()) {
1566
1567                 pa_pstream_use_shm(c->pstream, 1);
1568                 pa_log_info("Enabled SHM for new connection");
1569             }
1570
1571         }
1572 #endif
1573
1574         if (!success && memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) == 0)
1575             success = 1;
1576
1577         if (!success) {
1578             pa_log_warn("Denied access to client with invalid authorization data.");
1579             pa_pstream_send_error(c->pstream, tag, PA_ERR_ACCESS);
1580             return;
1581         }
1582
1583         c->authorized = 1;
1584         if (c->auth_timeout_event) {
1585             c->protocol->core->mainloop->time_free(c->auth_timeout_event);
1586             c->auth_timeout_event = NULL;
1587         }
1588     }
1589
1590     reply = reply_new(tag);
1591     pa_tagstruct_putu32(reply, PA_PROTOCOL_VERSION);
1592
1593 #ifdef HAVE_CREDS
1594 {
1595     /* SHM support is only enabled after both sides made sure they are the same user. */
1596
1597     pa_creds ucred;
1598
1599     ucred.uid = getuid();
1600     ucred.gid = getgid();
1601
1602     pa_pstream_send_tagstruct_with_creds(c->pstream, reply, &ucred);
1603 }
1604 #else
1605     pa_pstream_send_tagstruct(c->pstream, reply);
1606 #endif
1607 }
1608
1609 static void command_set_client_name(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1610     connection *c = CONNECTION(userdata);
1611     const char *name;
1612
1613     connection_assert_ref(c);
1614     pa_assert(t);
1615
1616     if (pa_tagstruct_gets(t, &name) < 0 ||
1617         !pa_tagstruct_eof(t)) {
1618         protocol_error(c);
1619         return;
1620     }
1621
1622     CHECK_VALIDITY(c->pstream, name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1623
1624     pa_client_set_name(c->client, name);
1625     pa_pstream_send_simple_ack(c->pstream, tag);
1626 }
1627
1628 static void command_lookup(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1629     connection *c = CONNECTION(userdata);
1630     const char *name;
1631     uint32_t idx = PA_IDXSET_INVALID;
1632
1633     connection_assert_ref(c);
1634     pa_assert(t);
1635
1636     if (pa_tagstruct_gets(t, &name) < 0 ||
1637         !pa_tagstruct_eof(t)) {
1638         protocol_error(c);
1639         return;
1640     }
1641
1642     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1643     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1644
1645     if (command == PA_COMMAND_LOOKUP_SINK) {
1646         pa_sink *sink;
1647         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
1648             idx = sink->index;
1649     } else {
1650         pa_source *source;
1651         pa_assert(command == PA_COMMAND_LOOKUP_SOURCE);
1652         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
1653             idx = source->index;
1654     }
1655
1656     if (idx == PA_IDXSET_INVALID)
1657         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1658     else {
1659         pa_tagstruct *reply;
1660         reply = reply_new(tag);
1661         pa_tagstruct_putu32(reply, idx);
1662         pa_pstream_send_tagstruct(c->pstream, reply);
1663     }
1664 }
1665
1666 static void command_drain_playback_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1667     connection *c = CONNECTION(userdata);
1668     uint32_t idx;
1669     playback_stream *s;
1670
1671     connection_assert_ref(c);
1672     pa_assert(t);
1673
1674     if (pa_tagstruct_getu32(t, &idx) < 0 ||
1675         !pa_tagstruct_eof(t)) {
1676         protocol_error(c);
1677         return;
1678     }
1679
1680     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1681     s = pa_idxset_get_by_index(c->output_streams, idx);
1682     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
1683     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
1684
1685     pa_asyncmsgq_post(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_DRAIN, PA_UINT_TO_PTR(tag), 0, NULL, NULL);
1686 }
1687
1688 static void command_stat(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1689     connection *c = CONNECTION(userdata);
1690     pa_tagstruct *reply;
1691     const pa_mempool_stat *stat;
1692
1693     connection_assert_ref(c);
1694     pa_assert(t);
1695
1696     if (!pa_tagstruct_eof(t)) {
1697         protocol_error(c);
1698         return;
1699     }
1700
1701     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1702
1703     stat = pa_mempool_get_stat(c->protocol->core->mempool);
1704
1705     reply = reply_new(tag);
1706     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->n_allocated));
1707     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->allocated_size));
1708     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->n_accumulated));
1709     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->accumulated_size));
1710     pa_tagstruct_putu32(reply, pa_scache_total_size(c->protocol->core));
1711     pa_pstream_send_tagstruct(c->pstream, reply);
1712 }
1713
1714 static void command_get_playback_latency(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1715     connection *c = CONNECTION(userdata);
1716     pa_tagstruct *reply;
1717     playback_stream *s;
1718     struct timeval tv, now;
1719     uint32_t idx;
1720     pa_usec_t latency;
1721
1722     connection_assert_ref(c);
1723     pa_assert(t);
1724
1725     if (pa_tagstruct_getu32(t, &idx) < 0 ||
1726         pa_tagstruct_get_timeval(t, &tv) < 0 ||
1727         !pa_tagstruct_eof(t)) {
1728         protocol_error(c);
1729         return;
1730     }
1731
1732     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1733     s = pa_idxset_get_by_index(c->output_streams, idx);
1734     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
1735     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
1736     CHECK_VALIDITY(c->pstream, pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_UPDATE_LATENCY, s, 0, NULL) == 0, tag, PA_ERR_NOENTITY)
1737
1738     reply = reply_new(tag);
1739
1740     latency = pa_sink_get_latency(s->sink_input->sink);
1741     latency += pa_bytes_to_usec(s->resampled_chunk_length, &s->sink_input->sample_spec);
1742
1743     pa_tagstruct_put_usec(reply, latency);
1744
1745     pa_tagstruct_put_usec(reply, 0);
1746     pa_tagstruct_put_boolean(reply, pa_sink_input_get_state(s->sink_input) == PA_SINK_INPUT_RUNNING);
1747     pa_tagstruct_put_timeval(reply, &tv);
1748     pa_tagstruct_put_timeval(reply, pa_gettimeofday(&now));
1749     pa_tagstruct_puts64(reply, s->write_index);
1750     pa_tagstruct_puts64(reply, s->read_index);
1751     pa_pstream_send_tagstruct(c->pstream, reply);
1752 }
1753
1754 static void command_get_record_latency(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1755     connection *c = CONNECTION(userdata);
1756     pa_tagstruct *reply;
1757     record_stream *s;
1758     struct timeval tv, now;
1759     uint32_t idx;
1760
1761     connection_assert_ref(c);
1762     pa_assert(t);
1763
1764     if (pa_tagstruct_getu32(t, &idx) < 0 ||
1765         pa_tagstruct_get_timeval(t, &tv) < 0 ||
1766         !pa_tagstruct_eof(t)) {
1767         protocol_error(c);
1768         return;
1769     }
1770
1771     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1772     s = pa_idxset_get_by_index(c->record_streams, idx);
1773     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
1774
1775     reply = reply_new(tag);
1776     pa_tagstruct_put_usec(reply, s->source_output->source->monitor_of ? pa_sink_get_latency(s->source_output->source->monitor_of) : 0);
1777     pa_tagstruct_put_usec(reply, pa_source_get_latency(s->source_output->source));
1778     pa_tagstruct_put_boolean(reply, 0);
1779     pa_tagstruct_put_timeval(reply, &tv);
1780     pa_tagstruct_put_timeval(reply, pa_gettimeofday(&now));
1781     pa_tagstruct_puts64(reply, pa_memblockq_get_write_index(s->memblockq));
1782     pa_tagstruct_puts64(reply, pa_memblockq_get_read_index(s->memblockq));
1783     pa_pstream_send_tagstruct(c->pstream, reply);
1784 }
1785
1786 static void command_create_upload_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1787     connection *c = CONNECTION(userdata);
1788     upload_stream *s;
1789     uint32_t length;
1790     const char *name;
1791     pa_sample_spec ss;
1792     pa_channel_map map;
1793     pa_tagstruct *reply;
1794
1795     connection_assert_ref(c);
1796     pa_assert(t);
1797
1798     if (pa_tagstruct_gets(t, &name) < 0 ||
1799         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
1800         pa_tagstruct_get_channel_map(t, &map) < 0 ||
1801         pa_tagstruct_getu32(t, &length) < 0 ||
1802         !pa_tagstruct_eof(t)) {
1803         protocol_error(c);
1804         return;
1805     }
1806
1807     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1808     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
1809     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
1810     CHECK_VALIDITY(c->pstream, map.channels == ss.channels, tag, PA_ERR_INVALID);
1811     CHECK_VALIDITY(c->pstream, (length % pa_frame_size(&ss)) == 0 && length > 0, tag, PA_ERR_INVALID);
1812     CHECK_VALIDITY(c->pstream, length <= PA_SCACHE_ENTRY_SIZE_MAX, tag, PA_ERR_TOOLARGE);
1813     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1814
1815     s = upload_stream_new(c, &ss, &map, name, length);
1816     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
1817
1818     reply = reply_new(tag);
1819     pa_tagstruct_putu32(reply, s->index);
1820     pa_tagstruct_putu32(reply, length);
1821     pa_pstream_send_tagstruct(c->pstream, reply);
1822 }
1823
1824 static void command_finish_upload_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1825     connection *c = CONNECTION(userdata);
1826     uint32_t channel;
1827     upload_stream *s;
1828     uint32_t idx;
1829
1830     connection_assert_ref(c);
1831     pa_assert(t);
1832
1833     if (pa_tagstruct_getu32(t, &channel) < 0 ||
1834         !pa_tagstruct_eof(t)) {
1835         protocol_error(c);
1836         return;
1837     }
1838
1839     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1840
1841     s = pa_idxset_get_by_index(c->output_streams, channel);
1842     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
1843     CHECK_VALIDITY(c->pstream, upload_stream_isinstance(s), tag, PA_ERR_NOENTITY);
1844
1845     if (pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->channel_map, &s->memchunk, &idx) < 0)
1846         pa_pstream_send_error(c->pstream, tag, PA_ERR_INTERNAL);
1847     else
1848         pa_pstream_send_simple_ack(c->pstream, tag);
1849
1850     upload_stream_unlink(s);
1851 }
1852
1853 static void command_play_sample(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1854     connection *c = CONNECTION(userdata);
1855     uint32_t sink_index;
1856     pa_volume_t volume;
1857     pa_sink *sink;
1858     const char *name, *sink_name;
1859
1860     connection_assert_ref(c);
1861     pa_assert(t);
1862
1863     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
1864         pa_tagstruct_gets(t, &sink_name) < 0 ||
1865         pa_tagstruct_getu32(t, &volume) < 0 ||
1866         pa_tagstruct_gets(t, &name) < 0 ||
1867         !pa_tagstruct_eof(t)) {
1868         protocol_error(c);
1869         return;
1870     }
1871
1872     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1873     CHECK_VALIDITY(c->pstream, sink_index != PA_INVALID_INDEX || !sink_name || (*sink_name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
1874     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1875
1876     if (sink_index != PA_INVALID_INDEX)
1877         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
1878     else
1879         sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK, 1);
1880
1881     CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
1882
1883     if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
1884         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1885         return;
1886     }
1887
1888     pa_pstream_send_simple_ack(c->pstream, tag);
1889 }
1890
1891 static void command_remove_sample(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1892     connection *c = CONNECTION(userdata);
1893     const char *name;
1894
1895     connection_assert_ref(c);
1896     pa_assert(t);
1897
1898     if (pa_tagstruct_gets(t, &name) < 0 ||
1899         !pa_tagstruct_eof(t)) {
1900         protocol_error(c);
1901         return;
1902     }
1903
1904     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1905     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
1906
1907     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
1908         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1909         return;
1910     }
1911
1912     pa_pstream_send_simple_ack(c->pstream, tag);
1913 }
1914
1915 static void fixup_sample_spec(connection *c, pa_sample_spec *fixed, const pa_sample_spec *original) {
1916     pa_assert(c);
1917     pa_assert(fixed);
1918     pa_assert(original);
1919
1920     *fixed = *original;
1921
1922     if (c->version < 12) {
1923         /* Before protocol version 12 we didn't support S32 samples,
1924          * so we need to lie about this to the client */
1925
1926         if (fixed->format == PA_SAMPLE_S32LE)
1927             fixed->format = PA_SAMPLE_FLOAT32LE;
1928         if (fixed->format == PA_SAMPLE_S32BE)
1929             fixed->format = PA_SAMPLE_FLOAT32BE;
1930     }
1931 }
1932
1933 static void sink_fill_tagstruct(connection *c, pa_tagstruct *t, pa_sink *sink) {
1934     pa_sample_spec fixed_ss;
1935
1936     pa_assert(t);
1937     pa_sink_assert_ref(sink);
1938
1939     fixup_sample_spec(c, &fixed_ss, &sink->sample_spec);
1940
1941     pa_tagstruct_put(
1942         t,
1943         PA_TAG_U32, sink->index,
1944         PA_TAG_STRING, sink->name,
1945         PA_TAG_STRING, sink->description,
1946         PA_TAG_SAMPLE_SPEC, &fixed_ss,
1947         PA_TAG_CHANNEL_MAP, &sink->channel_map,
1948         PA_TAG_U32, sink->module ? sink->module->index : PA_INVALID_INDEX,
1949         PA_TAG_CVOLUME, pa_sink_get_volume(sink),
1950         PA_TAG_BOOLEAN, pa_sink_get_mute(sink),
1951         PA_TAG_U32, sink->monitor_source ? sink->monitor_source->index : PA_INVALID_INDEX,
1952         PA_TAG_STRING, sink->monitor_source ? sink->monitor_source->name : NULL,
1953         PA_TAG_USEC, pa_sink_get_latency(sink),
1954         PA_TAG_STRING, sink->driver,
1955         PA_TAG_U32, sink->flags,
1956         PA_TAG_INVALID);
1957 }
1958
1959 static void source_fill_tagstruct(connection *c, pa_tagstruct *t, pa_source *source) {
1960     pa_sample_spec fixed_ss;
1961
1962     pa_assert(t);
1963     pa_source_assert_ref(source);
1964
1965     fixup_sample_spec(c, &fixed_ss, &source->sample_spec);
1966
1967     pa_tagstruct_put(
1968         t,
1969         PA_TAG_U32, source->index,
1970         PA_TAG_STRING, source->name,
1971         PA_TAG_STRING, source->description,
1972         PA_TAG_SAMPLE_SPEC, &fixed_ss,
1973         PA_TAG_CHANNEL_MAP, &source->channel_map,
1974         PA_TAG_U32, source->module ? source->module->index : PA_INVALID_INDEX,
1975         PA_TAG_CVOLUME, pa_source_get_volume(source),
1976         PA_TAG_BOOLEAN, pa_source_get_mute(source),
1977         PA_TAG_U32, source->monitor_of ? source->monitor_of->index : PA_INVALID_INDEX,
1978         PA_TAG_STRING, source->monitor_of ? source->monitor_of->name : NULL,
1979         PA_TAG_USEC, pa_source_get_latency(source),
1980         PA_TAG_STRING, source->driver,
1981         PA_TAG_U32, source->flags,
1982         PA_TAG_INVALID);
1983 }
1984
1985 static void client_fill_tagstruct(pa_tagstruct *t, pa_client *client) {
1986     pa_assert(t);
1987     pa_assert(client);
1988
1989     pa_tagstruct_putu32(t, client->index);
1990     pa_tagstruct_puts(t, client->name);
1991     pa_tagstruct_putu32(t, client->owner ? client->owner->index : PA_INVALID_INDEX);
1992     pa_tagstruct_puts(t, client->driver);
1993 }
1994
1995 static void module_fill_tagstruct(pa_tagstruct *t, pa_module *module) {
1996     pa_assert(t);
1997     pa_assert(module);
1998
1999     pa_tagstruct_putu32(t, module->index);
2000     pa_tagstruct_puts(t, module->name);
2001     pa_tagstruct_puts(t, module->argument);
2002     pa_tagstruct_putu32(t, module->n_used);
2003     pa_tagstruct_put_boolean(t, module->auto_unload);
2004 }
2005
2006 static void sink_input_fill_tagstruct(connection *c, pa_tagstruct *t, pa_sink_input *s) {
2007     pa_sample_spec fixed_ss;
2008
2009     pa_assert(t);
2010     pa_sink_input_assert_ref(s);
2011
2012     fixup_sample_spec(c, &fixed_ss, &s->sample_spec);
2013
2014     pa_tagstruct_putu32(t, s->index);
2015     pa_tagstruct_puts(t, s->name);
2016     pa_tagstruct_putu32(t, s->module ? s->module->index : PA_INVALID_INDEX);
2017     pa_tagstruct_putu32(t, s->client ? s->client->index : PA_INVALID_INDEX);
2018     pa_tagstruct_putu32(t, s->sink->index);
2019     pa_tagstruct_put_sample_spec(t, &fixed_ss);
2020     pa_tagstruct_put_channel_map(t, &s->channel_map);
2021     pa_tagstruct_put_cvolume(t, &s->volume);
2022     pa_tagstruct_put_usec(t, pa_sink_input_get_latency(s));
2023     pa_tagstruct_put_usec(t, pa_sink_get_latency(s->sink));
2024     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_sink_input_get_resample_method(s)));
2025     pa_tagstruct_puts(t, s->driver);
2026     if (c->version >= 11)
2027         pa_tagstruct_put_boolean(t, pa_sink_input_get_mute(s));
2028 }
2029
2030 static void source_output_fill_tagstruct(connection *c, pa_tagstruct *t, pa_source_output *s) {
2031     pa_sample_spec fixed_ss;
2032
2033     pa_assert(t);
2034     pa_source_output_assert_ref(s);
2035
2036     fixup_sample_spec(c, &fixed_ss, &s->sample_spec);
2037
2038     pa_tagstruct_putu32(t, s->index);
2039     pa_tagstruct_puts(t, s->name);
2040     pa_tagstruct_putu32(t, s->module ? s->module->index : PA_INVALID_INDEX);
2041     pa_tagstruct_putu32(t, s->client ? s->client->index : PA_INVALID_INDEX);
2042     pa_tagstruct_putu32(t, s->source->index);
2043     pa_tagstruct_put_sample_spec(t, &fixed_ss);
2044     pa_tagstruct_put_channel_map(t, &s->channel_map);
2045     pa_tagstruct_put_usec(t, pa_source_output_get_latency(s));
2046     pa_tagstruct_put_usec(t, pa_source_get_latency(s->source));
2047     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_source_output_get_resample_method(s)));
2048     pa_tagstruct_puts(t, s->driver);
2049 }
2050
2051 static void scache_fill_tagstruct(connection *c, pa_tagstruct *t, pa_scache_entry *e) {
2052     pa_sample_spec fixed_ss;
2053
2054     pa_assert(t);
2055     pa_assert(e);
2056
2057     fixup_sample_spec(c, &fixed_ss, &e->sample_spec);
2058
2059     pa_tagstruct_putu32(t, e->index);
2060     pa_tagstruct_puts(t, e->name);
2061     pa_tagstruct_put_cvolume(t, &e->volume);
2062     pa_tagstruct_put_usec(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
2063     pa_tagstruct_put_sample_spec(t, &fixed_ss);
2064     pa_tagstruct_put_channel_map(t, &e->channel_map);
2065     pa_tagstruct_putu32(t, e->memchunk.length);
2066     pa_tagstruct_put_boolean(t, e->lazy);
2067     pa_tagstruct_puts(t, e->filename);
2068 }
2069
2070 static void command_get_info(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2071     connection *c = CONNECTION(userdata);
2072     uint32_t idx;
2073     pa_sink *sink = NULL;
2074     pa_source *source = NULL;
2075     pa_client *client = NULL;
2076     pa_module *module = NULL;
2077     pa_sink_input *si = NULL;
2078     pa_source_output *so = NULL;
2079     pa_scache_entry *sce = NULL;
2080     const char *name;
2081     pa_tagstruct *reply;
2082
2083     connection_assert_ref(c);
2084     pa_assert(t);
2085
2086     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2087         (command != PA_COMMAND_GET_CLIENT_INFO &&
2088          command != PA_COMMAND_GET_MODULE_INFO &&
2089          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
2090          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
2091          pa_tagstruct_gets(t, &name) < 0) ||
2092         !pa_tagstruct_eof(t)) {
2093         protocol_error(c);
2094         return;
2095     }
2096
2097     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2098     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2099
2100     if (command == PA_COMMAND_GET_SINK_INFO) {
2101         if (idx != PA_INVALID_INDEX)
2102             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
2103         else
2104             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2105     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
2106         if (idx != PA_INVALID_INDEX)
2107             source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
2108         else
2109             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
2110     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
2111         client = pa_idxset_get_by_index(c->protocol->core->clients, idx);
2112     else if (command == PA_COMMAND_GET_MODULE_INFO)
2113         module = pa_idxset_get_by_index(c->protocol->core->modules, idx);
2114     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
2115         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2116     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
2117         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
2118     else {
2119         pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO);
2120         if (idx != PA_INVALID_INDEX)
2121             sce = pa_idxset_get_by_index(c->protocol->core->scache, idx);
2122         else
2123             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
2124     }
2125
2126     if (!sink && !source && !client && !module && !si && !so && !sce) {
2127         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2128         return;
2129     }
2130
2131     reply = reply_new(tag);
2132     if (sink)
2133         sink_fill_tagstruct(c, reply, sink);
2134     else if (source)
2135         source_fill_tagstruct(c, reply, source);
2136     else if (client)
2137         client_fill_tagstruct(reply, client);
2138     else if (module)
2139         module_fill_tagstruct(reply, module);
2140     else if (si)
2141         sink_input_fill_tagstruct(c, reply, si);
2142     else if (so)
2143         source_output_fill_tagstruct(c, reply, so);
2144     else
2145         scache_fill_tagstruct(c, reply, sce);
2146     pa_pstream_send_tagstruct(c->pstream, reply);
2147 }
2148
2149 static void command_get_info_list(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2150     connection *c = CONNECTION(userdata);
2151     pa_idxset *i;
2152     uint32_t idx;
2153     void *p;
2154     pa_tagstruct *reply;
2155
2156     connection_assert_ref(c);
2157     pa_assert(t);
2158
2159     if (!pa_tagstruct_eof(t)) {
2160         protocol_error(c);
2161         return;
2162     }
2163
2164     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2165
2166     reply = reply_new(tag);
2167
2168     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
2169         i = c->protocol->core->sinks;
2170     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
2171         i = c->protocol->core->sources;
2172     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
2173         i = c->protocol->core->clients;
2174     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
2175         i = c->protocol->core->modules;
2176     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
2177         i = c->protocol->core->sink_inputs;
2178     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
2179         i = c->protocol->core->source_outputs;
2180     else {
2181         pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
2182         i = c->protocol->core->scache;
2183     }
2184
2185     if (i) {
2186         for (p = pa_idxset_first(i, &idx); p; p = pa_idxset_next(i, &idx)) {
2187             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
2188                 sink_fill_tagstruct(c, reply, p);
2189             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
2190                 source_fill_tagstruct(c, reply, p);
2191             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
2192                 client_fill_tagstruct(reply, p);
2193             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
2194                 module_fill_tagstruct(reply, p);
2195             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
2196                 sink_input_fill_tagstruct(c, reply, p);
2197             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
2198                 source_output_fill_tagstruct(c, reply, p);
2199             else {
2200                 pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
2201                 scache_fill_tagstruct(c, reply, p);
2202             }
2203         }
2204     }
2205
2206     pa_pstream_send_tagstruct(c->pstream, reply);
2207 }
2208
2209 static void command_get_server_info(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2210     connection *c = CONNECTION(userdata);
2211     pa_tagstruct *reply;
2212     char txt[256];
2213     const char *n;
2214     pa_sample_spec fixed_ss;
2215
2216     connection_assert_ref(c);
2217     pa_assert(t);
2218
2219     if (!pa_tagstruct_eof(t)) {
2220         protocol_error(c);
2221         return;
2222     }
2223
2224     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2225
2226     reply = reply_new(tag);
2227     pa_tagstruct_puts(reply, PACKAGE_NAME);
2228     pa_tagstruct_puts(reply, PACKAGE_VERSION);
2229     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
2230     pa_tagstruct_puts(reply, pa_get_fqdn(txt, sizeof(txt)));
2231
2232     fixup_sample_spec(c, &fixed_ss, &c->protocol->core->default_sample_spec);
2233     pa_tagstruct_put_sample_spec(reply, &fixed_ss);
2234
2235     n = pa_namereg_get_default_sink_name(c->protocol->core);
2236     pa_tagstruct_puts(reply, n);
2237     n = pa_namereg_get_default_source_name(c->protocol->core);
2238     pa_tagstruct_puts(reply, n);
2239
2240     pa_tagstruct_putu32(reply, c->protocol->core->cookie);
2241
2242     pa_pstream_send_tagstruct(c->pstream, reply);
2243 }
2244
2245 static void subscription_cb(pa_core *core, pa_subscription_event_type_t e, uint32_t idx, void *userdata) {
2246     pa_tagstruct *t;
2247     connection *c = CONNECTION(userdata);
2248
2249     connection_assert_ref(c);
2250
2251     t = pa_tagstruct_new(NULL, 0);
2252     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
2253     pa_tagstruct_putu32(t, (uint32_t) -1);
2254     pa_tagstruct_putu32(t, e);
2255     pa_tagstruct_putu32(t, idx);
2256     pa_pstream_send_tagstruct(c->pstream, t);
2257 }
2258
2259 static void command_subscribe(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2260     connection *c = CONNECTION(userdata);
2261     pa_subscription_mask_t m;
2262
2263     connection_assert_ref(c);
2264     pa_assert(t);
2265
2266     if (pa_tagstruct_getu32(t, &m) < 0 ||
2267         !pa_tagstruct_eof(t)) {
2268         protocol_error(c);
2269         return;
2270     }
2271
2272     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2273     CHECK_VALIDITY(c->pstream, (m & ~PA_SUBSCRIPTION_MASK_ALL) == 0, tag, PA_ERR_INVALID);
2274
2275     if (c->subscription)
2276         pa_subscription_free(c->subscription);
2277
2278     if (m != 0) {
2279         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
2280         pa_assert(c->subscription);
2281     } else
2282         c->subscription = NULL;
2283
2284     pa_pstream_send_simple_ack(c->pstream, tag);
2285 }
2286
2287 static void command_set_volume(
2288         PA_GCC_UNUSED pa_pdispatch *pd,
2289         uint32_t command,
2290         uint32_t tag,
2291         pa_tagstruct *t,
2292         void *userdata) {
2293
2294     connection *c = CONNECTION(userdata);
2295     uint32_t idx;
2296     pa_cvolume volume;
2297     pa_sink *sink = NULL;
2298     pa_source *source = NULL;
2299     pa_sink_input *si = NULL;
2300     const char *name = NULL;
2301
2302     connection_assert_ref(c);
2303     pa_assert(t);
2304
2305     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2306         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
2307         (command == PA_COMMAND_SET_SOURCE_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
2308         pa_tagstruct_get_cvolume(t, &volume) ||
2309         !pa_tagstruct_eof(t)) {
2310         protocol_error(c);
2311         return;
2312     }
2313
2314     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2315     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2316     CHECK_VALIDITY(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID);
2317
2318     switch (command) {
2319
2320         case PA_COMMAND_SET_SINK_VOLUME:
2321             if (idx != PA_INVALID_INDEX)
2322                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
2323             else
2324                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2325             break;
2326
2327         case PA_COMMAND_SET_SOURCE_VOLUME:
2328             if (idx != PA_INVALID_INDEX)
2329                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
2330             else
2331                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
2332             break;
2333
2334         case PA_COMMAND_SET_SINK_INPUT_VOLUME:
2335             si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2336             break;
2337
2338         default:
2339             pa_assert_not_reached();
2340     }
2341
2342     CHECK_VALIDITY(c->pstream, si || sink || source, tag, PA_ERR_NOENTITY);
2343
2344     if (sink)
2345         pa_sink_set_volume(sink, &volume);
2346     else if (source)
2347         pa_source_set_volume(source, &volume);
2348     else if (si)
2349         pa_sink_input_set_volume(si, &volume);
2350
2351     pa_pstream_send_simple_ack(c->pstream, tag);
2352 }
2353
2354 static void command_set_mute(
2355         PA_GCC_UNUSED pa_pdispatch *pd,
2356         uint32_t command,
2357         uint32_t tag,
2358         pa_tagstruct *t,
2359         void *userdata) {
2360
2361     connection *c = CONNECTION(userdata);
2362     uint32_t idx;
2363     int mute;
2364     pa_sink *sink = NULL;
2365     pa_source *source = NULL;
2366     pa_sink_input *si = NULL;
2367     const char *name = NULL;
2368
2369     connection_assert_ref(c);
2370     pa_assert(t);
2371
2372     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2373         (command == PA_COMMAND_SET_SINK_MUTE && pa_tagstruct_gets(t, &name) < 0) ||
2374         (command == PA_COMMAND_SET_SOURCE_MUTE && pa_tagstruct_gets(t, &name) < 0) ||
2375         pa_tagstruct_get_boolean(t, &mute) ||
2376         !pa_tagstruct_eof(t)) {
2377         protocol_error(c);
2378         return;
2379     }
2380
2381     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2382     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2383
2384     switch (command) {
2385
2386         case PA_COMMAND_SET_SINK_MUTE:
2387
2388             if (idx != PA_INVALID_INDEX)
2389                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
2390             else
2391                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2392
2393             break;
2394
2395         case PA_COMMAND_SET_SOURCE_MUTE:
2396             if (idx != PA_INVALID_INDEX)
2397                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
2398             else
2399                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
2400
2401             break;
2402
2403         case PA_COMMAND_SET_SINK_INPUT_MUTE:
2404             si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2405             break;
2406
2407         default:
2408             pa_assert_not_reached();
2409     }
2410
2411     CHECK_VALIDITY(c->pstream, si || sink || source, tag, PA_ERR_NOENTITY);
2412
2413     if (sink)
2414         pa_sink_set_mute(sink, mute);
2415     else if (source)
2416         pa_source_set_mute(source, mute);
2417     else if (si)
2418         pa_sink_input_set_mute(si, mute);
2419
2420     pa_pstream_send_simple_ack(c->pstream, tag);
2421 }
2422
2423 static void command_cork_playback_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2424     connection *c = CONNECTION(userdata);
2425     uint32_t idx;
2426     int b;
2427     playback_stream *s;
2428
2429     connection_assert_ref(c);
2430     pa_assert(t);
2431
2432     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2433         pa_tagstruct_get_boolean(t, &b) < 0 ||
2434         !pa_tagstruct_eof(t)) {
2435         protocol_error(c);
2436         return;
2437     }
2438
2439     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2440     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
2441     s = pa_idxset_get_by_index(c->output_streams, idx);
2442     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2443     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2444
2445     pa_sink_input_cork(s->sink_input, b);
2446     pa_pstream_send_simple_ack(c->pstream, tag);
2447 }
2448
2449 static void command_trigger_or_flush_or_prebuf_playback_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2450     connection *c = CONNECTION(userdata);
2451     uint32_t idx;
2452     playback_stream *s;
2453
2454     connection_assert_ref(c);
2455     pa_assert(t);
2456
2457     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2458         !pa_tagstruct_eof(t)) {
2459         protocol_error(c);
2460         return;
2461     }
2462
2463     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2464     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
2465     s = pa_idxset_get_by_index(c->output_streams, idx);
2466     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2467     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2468
2469     switch (command) {
2470         case PA_COMMAND_FLUSH_PLAYBACK_STREAM:
2471             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_FLUSH, NULL, 0, NULL);
2472             break;
2473
2474         case PA_COMMAND_PREBUF_PLAYBACK_STREAM:
2475             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_PREBUF_FORCE, NULL, 0, NULL);
2476             break;
2477
2478         case PA_COMMAND_TRIGGER_PLAYBACK_STREAM:
2479             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_TRIGGER, NULL, 0, NULL);
2480             break;
2481
2482         default:
2483             pa_assert_not_reached();
2484     }
2485
2486     pa_pstream_send_simple_ack(c->pstream, tag);
2487 }
2488
2489 static void command_cork_record_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2490     connection *c = CONNECTION(userdata);
2491     uint32_t idx;
2492     record_stream *s;
2493     int b;
2494
2495     connection_assert_ref(c);
2496     pa_assert(t);
2497
2498     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2499         pa_tagstruct_get_boolean(t, &b) < 0 ||
2500         !pa_tagstruct_eof(t)) {
2501         protocol_error(c);
2502         return;
2503     }
2504
2505     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2506     s = pa_idxset_get_by_index(c->record_streams, idx);
2507     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2508
2509     pa_source_output_cork(s->source_output, b);
2510     pa_memblockq_prebuf_force(s->memblockq);
2511     pa_pstream_send_simple_ack(c->pstream, tag);
2512 }
2513
2514 static void command_flush_record_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2515     connection *c = CONNECTION(userdata);
2516     uint32_t idx;
2517     record_stream *s;
2518
2519     connection_assert_ref(c);
2520     pa_assert(t);
2521
2522     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2523         !pa_tagstruct_eof(t)) {
2524         protocol_error(c);
2525         return;
2526     }
2527
2528     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2529     s = pa_idxset_get_by_index(c->record_streams, idx);
2530     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2531
2532     pa_memblockq_flush(s->memblockq);
2533     pa_pstream_send_simple_ack(c->pstream, tag);
2534 }
2535
2536 static void command_set_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2537     connection *c = CONNECTION(userdata);
2538     uint32_t idx;
2539     uint32_t maxlength, tlength, prebuf, minreq, fragsize;
2540     pa_tagstruct *reply;
2541
2542     connection_assert_ref(c);
2543     pa_assert(t);
2544
2545     if (pa_tagstruct_getu32(t, &idx) < 0) {
2546         protocol_error(c);
2547         return;
2548     }
2549
2550     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2551
2552     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR) {
2553         playback_stream *s;
2554
2555         s = pa_idxset_get_by_index(c->output_streams, idx);
2556         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2557         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2558
2559         if (pa_tagstruct_get(
2560                     t,
2561                     PA_TAG_U32, &maxlength,
2562                     PA_TAG_U32, &tlength,
2563                     PA_TAG_U32, &prebuf,
2564                     PA_TAG_U32, &minreq,
2565                     PA_TAG_INVALID) < 0 ||
2566             !pa_tagstruct_eof(t)) {
2567             protocol_error(c);
2568             return;
2569         }
2570
2571         CHECK_VALIDITY(c->pstream, maxlength > 0, tag, PA_ERR_INVALID);
2572         CHECK_VALIDITY(c->pstream, maxlength <= MAX_MEMBLOCKQ_LENGTH, tag, PA_ERR_INVALID);
2573
2574         pa_memblockq_set_maxlength(s->memblockq, maxlength);
2575         pa_memblockq_set_tlength(s->memblockq, tlength);
2576         pa_memblockq_set_prebuf(s->memblockq, prebuf);
2577         pa_memblockq_set_minreq(s->memblockq, minreq);
2578
2579         reply = reply_new(tag);
2580         pa_tagstruct_putu32(reply, (uint32_t) pa_memblockq_get_maxlength(s->memblockq));
2581         pa_tagstruct_putu32(reply, (uint32_t) pa_memblockq_get_tlength(s->memblockq));
2582         pa_tagstruct_putu32(reply, (uint32_t) pa_memblockq_get_prebuf(s->memblockq));
2583         pa_tagstruct_putu32(reply, (uint32_t) pa_memblockq_get_minreq(s->memblockq));
2584
2585     } else {
2586         record_stream *s;
2587         size_t base;
2588         pa_assert(command == PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR);
2589
2590         s = pa_idxset_get_by_index(c->record_streams, idx);
2591         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2592
2593         if (pa_tagstruct_get(
2594                     t,
2595                     PA_TAG_U32, &maxlength,
2596                     PA_TAG_U32, &fragsize,
2597                     PA_TAG_INVALID) < 0 ||
2598             !pa_tagstruct_eof(t)) {
2599             protocol_error(c);
2600             return;
2601         }
2602
2603         CHECK_VALIDITY(c->pstream, maxlength > 0, tag, PA_ERR_INVALID);
2604         CHECK_VALIDITY(c->pstream, maxlength <= MAX_MEMBLOCKQ_LENGTH, tag, PA_ERR_INVALID);
2605
2606         pa_memblockq_set_maxlength(s->memblockq, maxlength);
2607
2608         base = pa_frame_size(&s->source_output->sample_spec);
2609         s->fragment_size = (fragsize/base)*base;
2610         if (s->fragment_size <= 0)
2611             s->fragment_size = base;
2612
2613         if (s->fragment_size > pa_memblockq_get_maxlength(s->memblockq))
2614             s->fragment_size = pa_memblockq_get_maxlength(s->memblockq);
2615
2616         reply = reply_new(tag);
2617         pa_tagstruct_putu32(reply, (uint32_t) pa_memblockq_get_maxlength(s->memblockq));
2618         pa_tagstruct_putu32(reply, s->fragment_size);
2619     }
2620
2621     pa_pstream_send_tagstruct(c->pstream, reply);
2622 }
2623
2624 static void command_update_stream_sample_rate(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2625     connection *c = CONNECTION(userdata);
2626     uint32_t idx;
2627     uint32_t rate;
2628
2629     connection_assert_ref(c);
2630     pa_assert(t);
2631
2632     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2633         pa_tagstruct_getu32(t, &rate) < 0 ||
2634         !pa_tagstruct_eof(t)) {
2635         protocol_error(c);
2636         return;
2637     }
2638
2639     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2640     CHECK_VALIDITY(c->pstream, rate > 0 && rate <= PA_RATE_MAX, tag, PA_ERR_INVALID);
2641
2642     if (command == PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE) {
2643         playback_stream *s;
2644
2645         s = pa_idxset_get_by_index(c->output_streams, idx);
2646         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2647         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2648
2649         pa_sink_input_set_rate(s->sink_input, rate);
2650
2651     } else {
2652         record_stream *s;
2653         pa_assert(command == PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE);
2654
2655         s = pa_idxset_get_by_index(c->record_streams, idx);
2656         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2657
2658         pa_source_output_set_rate(s->source_output, rate);
2659     }
2660
2661     pa_pstream_send_simple_ack(c->pstream, tag);
2662 }
2663
2664 static void command_set_default_sink_or_source(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2665     connection *c = CONNECTION(userdata);
2666     const char *s;
2667
2668     connection_assert_ref(c);
2669     pa_assert(t);
2670
2671     if (pa_tagstruct_gets(t, &s) < 0 ||
2672         !pa_tagstruct_eof(t)) {
2673         protocol_error(c);
2674         return;
2675     }
2676
2677     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2678     CHECK_VALIDITY(c->pstream, !s || (*s && pa_utf8_valid(s)), tag, PA_ERR_INVALID);
2679
2680     pa_namereg_set_default(c->protocol->core, s, command == PA_COMMAND_SET_DEFAULT_SOURCE ? PA_NAMEREG_SOURCE : PA_NAMEREG_SINK);
2681     pa_pstream_send_simple_ack(c->pstream, tag);
2682 }
2683
2684 static void command_set_stream_name(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2685     connection *c = CONNECTION(userdata);
2686     uint32_t idx;
2687     const char *name;
2688
2689     connection_assert_ref(c);
2690     pa_assert(t);
2691
2692     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2693         pa_tagstruct_gets(t, &name) < 0 ||
2694         !pa_tagstruct_eof(t)) {
2695         protocol_error(c);
2696         return;
2697     }
2698
2699     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2700     CHECK_VALIDITY(c->pstream, name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
2701
2702     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_NAME) {
2703         playback_stream *s;
2704
2705         s = pa_idxset_get_by_index(c->output_streams, idx);
2706         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2707         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2708
2709         pa_sink_input_set_name(s->sink_input, name);
2710
2711     } else {
2712         record_stream *s;
2713         pa_assert(command == PA_COMMAND_SET_RECORD_STREAM_NAME);
2714
2715         s = pa_idxset_get_by_index(c->record_streams, idx);
2716         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2717
2718         pa_source_output_set_name(s->source_output, name);
2719     }
2720
2721     pa_pstream_send_simple_ack(c->pstream, tag);
2722 }
2723
2724 static void command_kill(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2725     connection *c = CONNECTION(userdata);
2726     uint32_t idx;
2727
2728     connection_assert_ref(c);
2729     pa_assert(t);
2730
2731     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2732         !pa_tagstruct_eof(t)) {
2733         protocol_error(c);
2734         return;
2735     }
2736
2737     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2738
2739     if (command == PA_COMMAND_KILL_CLIENT) {
2740         pa_client *client;
2741
2742         client = pa_idxset_get_by_index(c->protocol->core->clients, idx);
2743         CHECK_VALIDITY(c->pstream, client, tag, PA_ERR_NOENTITY);
2744
2745         connection_ref(c);
2746         pa_client_kill(client);
2747
2748     } else if (command == PA_COMMAND_KILL_SINK_INPUT) {
2749         pa_sink_input *s;
2750
2751         s = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2752         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2753
2754         connection_ref(c);
2755         pa_sink_input_kill(s);
2756     } else {
2757         pa_source_output *s;
2758
2759         pa_assert(command == PA_COMMAND_KILL_SOURCE_OUTPUT);
2760
2761         s = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
2762         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2763
2764         connection_ref(c);
2765         pa_source_output_kill(s);
2766     }
2767
2768     pa_pstream_send_simple_ack(c->pstream, tag);
2769     connection_unref(c);
2770 }
2771
2772 static void command_load_module(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2773     connection *c = CONNECTION(userdata);
2774     pa_module *m;
2775     const char *name, *argument;
2776     pa_tagstruct *reply;
2777
2778     connection_assert_ref(c);
2779     pa_assert(t);
2780
2781     if (pa_tagstruct_gets(t, &name) < 0 ||
2782         pa_tagstruct_gets(t, &argument) < 0 ||
2783         !pa_tagstruct_eof(t)) {
2784         protocol_error(c);
2785         return;
2786     }
2787
2788     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2789     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name) && !strchr(name, '/'), tag, PA_ERR_INVALID);
2790     CHECK_VALIDITY(c->pstream, !argument || pa_utf8_valid(argument), tag, PA_ERR_INVALID);
2791
2792     if (!(m = pa_module_load(c->protocol->core, name, argument))) {
2793         pa_pstream_send_error(c->pstream, tag, PA_ERR_MODINITFAILED);
2794         return;
2795     }
2796
2797     reply = reply_new(tag);
2798     pa_tagstruct_putu32(reply, m->index);
2799     pa_pstream_send_tagstruct(c->pstream, reply);
2800 }
2801
2802 static void command_unload_module(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2803     connection *c = CONNECTION(userdata);
2804     uint32_t idx;
2805     pa_module *m;
2806
2807     connection_assert_ref(c);
2808     pa_assert(t);
2809
2810     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2811         !pa_tagstruct_eof(t)) {
2812         protocol_error(c);
2813         return;
2814     }
2815
2816     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2817     m = pa_idxset_get_by_index(c->protocol->core->modules, idx);
2818     CHECK_VALIDITY(c->pstream, m, tag, PA_ERR_NOENTITY);
2819
2820     pa_module_unload_request(m);
2821     pa_pstream_send_simple_ack(c->pstream, tag);
2822 }
2823
2824 static void command_add_autoload(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2825     connection *c = CONNECTION(userdata);
2826     const char *name, *module, *argument;
2827     uint32_t type;
2828     uint32_t idx;
2829     pa_tagstruct *reply;
2830
2831     connection_assert_ref(c);
2832     pa_assert(t);
2833
2834     if (pa_tagstruct_gets(t, &name) < 0 ||
2835         pa_tagstruct_getu32(t, &type) < 0 ||
2836         pa_tagstruct_gets(t, &module) < 0 ||
2837         pa_tagstruct_gets(t, &argument) < 0 ||
2838         !pa_tagstruct_eof(t)) {
2839         protocol_error(c);
2840         return;
2841     }
2842
2843     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2844     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
2845     CHECK_VALIDITY(c->pstream, type == 0 || type == 1, tag, PA_ERR_INVALID);
2846     CHECK_VALIDITY(c->pstream, module && *module && pa_utf8_valid(module), tag, PA_ERR_INVALID);
2847     CHECK_VALIDITY(c->pstream, !argument || pa_utf8_valid(argument), tag, PA_ERR_INVALID);
2848
2849     if (pa_autoload_add(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE, module, argument, &idx) < 0) {
2850         pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
2851         return;
2852     }
2853
2854     reply = reply_new(tag);
2855     pa_tagstruct_putu32(reply, idx);
2856     pa_pstream_send_tagstruct(c->pstream, reply);
2857 }
2858
2859 static void command_remove_autoload(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2860     connection *c = CONNECTION(userdata);
2861     const char *name = NULL;
2862     uint32_t type, idx = PA_IDXSET_INVALID;
2863     int r;
2864
2865     connection_assert_ref(c);
2866     pa_assert(t);
2867
2868     if ((pa_tagstruct_getu32(t, &idx) < 0 &&
2869         (pa_tagstruct_gets(t, &name) < 0 ||
2870          pa_tagstruct_getu32(t, &type) < 0)) ||
2871         !pa_tagstruct_eof(t)) {
2872         protocol_error(c);
2873         return;
2874     }
2875
2876     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2877     CHECK_VALIDITY(c->pstream, name || idx != PA_IDXSET_INVALID, tag, PA_ERR_INVALID);
2878     CHECK_VALIDITY(c->pstream, !name || (*name && pa_utf8_valid(name) && (type == 0 || type == 1)), tag, PA_ERR_INVALID);
2879
2880     if (name)
2881         r = pa_autoload_remove_by_name(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE);
2882     else
2883         r = pa_autoload_remove_by_index(c->protocol->core, idx);
2884
2885     CHECK_VALIDITY(c->pstream, r >= 0, tag, PA_ERR_NOENTITY);
2886
2887     pa_pstream_send_simple_ack(c->pstream, tag);
2888 }
2889
2890 static void autoload_fill_tagstruct(pa_tagstruct *t, const pa_autoload_entry *e) {
2891     pa_assert(t && e);
2892
2893     pa_tagstruct_putu32(t, e->index);
2894     pa_tagstruct_puts(t, e->name);
2895     pa_tagstruct_putu32(t, e->type == PA_NAMEREG_SINK ? 0 : 1);
2896     pa_tagstruct_puts(t, e->module);
2897     pa_tagstruct_puts(t, e->argument);
2898 }
2899
2900 static void command_get_autoload_info(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2901     connection *c = CONNECTION(userdata);
2902     const pa_autoload_entry *a = NULL;
2903     uint32_t type, idx;
2904     const char *name;
2905     pa_tagstruct *reply;
2906
2907     connection_assert_ref(c);
2908     pa_assert(t);
2909
2910     if ((pa_tagstruct_getu32(t, &idx) < 0 &&
2911         (pa_tagstruct_gets(t, &name) < 0 ||
2912          pa_tagstruct_getu32(t, &type) < 0)) ||
2913         !pa_tagstruct_eof(t)) {
2914         protocol_error(c);
2915         return;
2916     }
2917
2918     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2919     CHECK_VALIDITY(c->pstream, name || idx != PA_IDXSET_INVALID, tag, PA_ERR_INVALID);
2920     CHECK_VALIDITY(c->pstream, !name || (*name && (type == 0 || type == 1) && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2921
2922     if (name)
2923         a = pa_autoload_get_by_name(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE);
2924     else
2925         a = pa_autoload_get_by_index(c->protocol->core, idx);
2926
2927     CHECK_VALIDITY(c->pstream, a, tag, PA_ERR_NOENTITY);
2928
2929     reply = reply_new(tag);
2930     autoload_fill_tagstruct(reply, a);
2931     pa_pstream_send_tagstruct(c->pstream, reply);
2932 }
2933
2934 static void command_get_autoload_info_list(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2935     connection *c = CONNECTION(userdata);
2936     pa_tagstruct *reply;
2937
2938     connection_assert_ref(c);
2939     pa_assert(t);
2940
2941     if (!pa_tagstruct_eof(t)) {
2942         protocol_error(c);
2943         return;
2944     }
2945
2946     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2947
2948     reply = reply_new(tag);
2949
2950     if (c->protocol->core->autoload_hashmap) {
2951         pa_autoload_entry *a;
2952         void *state = NULL;
2953
2954         while ((a = pa_hashmap_iterate(c->protocol->core->autoload_hashmap, &state, NULL)))
2955             autoload_fill_tagstruct(reply, a);
2956     }
2957
2958     pa_pstream_send_tagstruct(c->pstream, reply);
2959 }
2960
2961 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2962     connection *c = CONNECTION(userdata);
2963     uint32_t idx = PA_INVALID_INDEX, idx_device = PA_INVALID_INDEX;
2964     const char *name = NULL;
2965
2966     connection_assert_ref(c);
2967     pa_assert(t);
2968
2969     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2970         pa_tagstruct_getu32(t, &idx_device) < 0 ||
2971         pa_tagstruct_gets(t, &name) < 0 ||
2972         !pa_tagstruct_eof(t)) {
2973         protocol_error(c);
2974         return;
2975     }
2976
2977     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2978     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
2979     CHECK_VALIDITY(c->pstream, idx_device != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2980
2981     if (command == PA_COMMAND_MOVE_SINK_INPUT) {
2982         pa_sink_input *si = NULL;
2983         pa_sink *sink = NULL;
2984
2985         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2986
2987         if (idx_device != PA_INVALID_INDEX)
2988             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx_device);
2989         else
2990             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2991
2992         CHECK_VALIDITY(c->pstream, si && sink, tag, PA_ERR_NOENTITY);
2993
2994         if (pa_sink_input_move_to(si, sink, 0) < 0) {
2995             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
2996             return;
2997         }
2998     } else {
2999         pa_source_output *so = NULL;
3000         pa_source *source;
3001
3002         pa_assert(command == PA_COMMAND_MOVE_SOURCE_OUTPUT);
3003
3004         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
3005
3006         if (idx_device != PA_INVALID_INDEX)
3007             source = pa_idxset_get_by_index(c->protocol->core->sources, idx_device);
3008         else
3009             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
3010
3011         CHECK_VALIDITY(c->pstream, so && source, tag, PA_ERR_NOENTITY);
3012
3013         if (pa_source_output_move_to(so, source) < 0) {
3014             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3015             return;
3016         }
3017     }
3018
3019     pa_pstream_send_simple_ack(c->pstream, tag);
3020 }
3021
3022 static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3023     connection *c = CONNECTION(userdata);
3024     uint32_t idx = PA_INVALID_INDEX;
3025     const char *name = NULL;
3026     int b;
3027
3028     connection_assert_ref(c);
3029     pa_assert(t);
3030
3031     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3032         pa_tagstruct_gets(t, &name) < 0 ||
3033         pa_tagstruct_get_boolean(t, &b) < 0 ||
3034         !pa_tagstruct_eof(t)) {
3035         protocol_error(c);
3036         return;
3037     }
3038
3039     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3040     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || !*name || pa_utf8_valid(name), tag, PA_ERR_INVALID);
3041
3042     if (command == PA_COMMAND_SUSPEND_SINK) {
3043
3044         if (idx == PA_INVALID_INDEX && name && !*name) {
3045
3046             if (pa_sink_suspend_all(c->protocol->core, b) < 0) {
3047                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3048                 return;
3049             }
3050         } else {
3051             pa_sink *sink = NULL;
3052
3053             if (idx != PA_INVALID_INDEX)
3054                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
3055             else
3056                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
3057
3058             CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
3059
3060             if (pa_sink_suspend(sink, b) < 0) {
3061                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3062                 return;
3063             }
3064         }
3065     } else {
3066
3067         pa_assert(command == PA_COMMAND_SUSPEND_SOURCE);
3068
3069         if (idx == PA_INVALID_INDEX && name && !*name) {
3070
3071             if (pa_source_suspend_all(c->protocol->core, b) < 0) {
3072                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3073                 return;
3074             }
3075
3076         } else {
3077             pa_source *source;
3078
3079             if (idx != PA_INVALID_INDEX)
3080                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
3081             else
3082                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
3083
3084             CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
3085
3086             if (pa_source_suspend(source, b) < 0) {
3087                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3088                 return;
3089             }
3090         }
3091     }
3092
3093     pa_pstream_send_simple_ack(c->pstream, tag);
3094 }
3095
3096 /*** pstream callbacks ***/
3097
3098 static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const pa_creds *creds, void *userdata) {
3099     connection *c = CONNECTION(userdata);
3100
3101     pa_assert(p);
3102     pa_assert(packet);
3103     connection_assert_ref(c);
3104
3105     if (pa_pdispatch_run(c->pdispatch, packet, creds, c) < 0) {
3106         pa_log("invalid packet.");
3107         connection_unlink(c);
3108     }
3109 }
3110
3111 static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, int64_t offset, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata) {
3112     connection *c = CONNECTION(userdata);
3113     output_stream *stream;
3114
3115     pa_assert(p);
3116     pa_assert(chunk);
3117     connection_assert_ref(c);
3118
3119     if (!(stream = OUTPUT_STREAM(pa_idxset_get_by_index(c->output_streams, channel)))) {
3120         pa_log("client sent block for invalid stream.");
3121         /* Ignoring */
3122         return;
3123     }
3124
3125     if (playback_stream_isinstance(stream)) {
3126         playback_stream *ps = PLAYBACK_STREAM(stream);
3127
3128         if (seek != PA_SEEK_RELATIVE || offset != 0)
3129             pa_asyncmsgq_post(ps->sink_input->sink->asyncmsgq, PA_MSGOBJECT(ps->sink_input), SINK_INPUT_MESSAGE_SEEK, PA_UINT_TO_PTR(seek), offset, NULL, NULL);
3130
3131         pa_asyncmsgq_post(ps->sink_input->sink->asyncmsgq, PA_MSGOBJECT(ps->sink_input), SINK_INPUT_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
3132
3133     } else {
3134         upload_stream *u = UPLOAD_STREAM(stream);
3135         size_t l;
3136
3137         if (!u->memchunk.memblock) {
3138             if (u->length == chunk->length) {
3139                 u->memchunk = *chunk;
3140                 pa_memblock_ref(u->memchunk.memblock);
3141                 u->length = 0;
3142             } else {
3143                 u->memchunk.memblock = pa_memblock_new(c->protocol->core->mempool, u->length);
3144                 u->memchunk.index = u->memchunk.length = 0;
3145             }
3146         }
3147
3148         pa_assert(u->memchunk.memblock);
3149
3150         l = u->length;
3151         if (l > chunk->length)
3152             l = chunk->length;
3153
3154
3155         if (l > 0) {
3156             void *src, *dst;
3157             dst = pa_memblock_acquire(u->memchunk.memblock);
3158             src = pa_memblock_acquire(chunk->memblock);
3159
3160             memcpy((uint8_t*) dst + u->memchunk.index + u->memchunk.length,
3161                    (uint8_t*) src+chunk->index, l);
3162
3163             pa_memblock_release(u->memchunk.memblock);
3164             pa_memblock_release(chunk->memblock);
3165
3166             u->memchunk.length += l;
3167             u->length -= l;
3168         }
3169     }
3170 }
3171
3172 static void pstream_die_callback(pa_pstream *p, void *userdata) {
3173     connection *c = CONNECTION(userdata);
3174
3175     pa_assert(p);
3176     connection_assert_ref(c);
3177
3178     connection_unlink(c);
3179     pa_log_info("connection died.");
3180 }
3181
3182 static void pstream_drain_callback(pa_pstream *p, void *userdata) {
3183     connection *c = CONNECTION(userdata);
3184
3185     pa_assert(p);
3186     connection_assert_ref(c);
3187
3188     send_memblock(c);
3189 }
3190
3191 static void pstream_revoke_callback(pa_pstream *p, uint32_t block_id, void *userdata) {
3192     pa_thread_mq *q;
3193
3194     if (!(q = pa_thread_mq_get()))
3195         pa_pstream_send_revoke(p, block_id);
3196     else
3197         pa_asyncmsgq_post(q->outq, PA_MSGOBJECT(userdata), CONNECTION_MESSAGE_REVOKE, PA_UINT_TO_PTR(block_id), 0, NULL, NULL);
3198 }
3199
3200 static void pstream_release_callback(pa_pstream *p, uint32_t block_id, void *userdata) {
3201     pa_thread_mq *q;
3202
3203     if (!(q = pa_thread_mq_get()))
3204         pa_pstream_send_release(p, block_id);
3205     else
3206         pa_asyncmsgq_post(q->outq, PA_MSGOBJECT(userdata), CONNECTION_MESSAGE_RELEASE, PA_UINT_TO_PTR(block_id), 0, NULL, NULL);
3207 }
3208
3209 /*** client callbacks ***/
3210
3211 static void client_kill_cb(pa_client *c) {
3212     pa_assert(c);
3213
3214     connection_unlink(CONNECTION(c->userdata));
3215 }
3216
3217 /*** socket server callbacks ***/
3218
3219 static void auth_timeout(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
3220     connection *c = CONNECTION(userdata);
3221
3222     pa_assert(m);
3223     pa_assert(tv);
3224     connection_assert_ref(c);
3225     pa_assert(c->auth_timeout_event == e);
3226
3227     if (!c->authorized)
3228         connection_unlink(c);
3229 }
3230
3231 static void on_connection(PA_GCC_UNUSED pa_socket_server*s, pa_iochannel *io, void *userdata) {
3232     pa_protocol_native *p = userdata;
3233     connection *c;
3234     char cname[256], pname[128];
3235
3236     pa_assert(s);
3237     pa_assert(io);
3238     pa_assert(p);
3239
3240     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
3241         pa_log_warn("Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
3242         pa_iochannel_free(io);
3243         return;
3244     }
3245
3246     c = pa_msgobject_new(connection);
3247     c->parent.parent.free = connection_free;
3248     c->parent.process_msg = connection_process_msg;
3249
3250     c->authorized = !!p->public;
3251
3252     if (!c->authorized && p->auth_ip_acl && pa_ip_acl_check(p->auth_ip_acl, pa_iochannel_get_recv_fd(io)) > 0) {
3253         pa_log_info("Client authenticated by IP ACL.");
3254         c->authorized = 1;
3255     }
3256
3257     if (!c->authorized) {
3258         struct timeval tv;
3259         pa_gettimeofday(&tv);
3260         tv.tv_sec += AUTH_TIMEOUT;
3261         c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
3262     } else
3263         c->auth_timeout_event = NULL;
3264
3265     c->version = 8;
3266     c->protocol = p;
3267     pa_iochannel_socket_peer_to_string(io, pname, sizeof(pname));
3268     pa_snprintf(cname, sizeof(cname), "Native client (%s)", pname);
3269     c->client = pa_client_new(p->core, __FILE__, cname);
3270     c->client->kill = client_kill_cb;
3271     c->client->userdata = c;
3272     c->client->owner = p->module;
3273
3274     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->mempool);
3275
3276     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
3277     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
3278     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
3279     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
3280     pa_pstream_set_revoke_callback(c->pstream, pstream_revoke_callback, c);
3281     pa_pstream_set_release_callback(c->pstream, pstream_release_callback, c);
3282
3283     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
3284
3285     c->record_streams = pa_idxset_new(NULL, NULL);
3286     c->output_streams = pa_idxset_new(NULL, NULL);
3287
3288     c->rrobin_index = PA_IDXSET_INVALID;
3289     c->subscription = NULL;
3290
3291     pa_idxset_put(p->connections, c, NULL);
3292
3293 #ifdef HAVE_CREDS
3294     if (pa_iochannel_creds_supported(io))
3295         pa_iochannel_creds_enable(io);
3296
3297 #endif
3298 }
3299
3300 /*** module entry points ***/
3301
3302 static int load_key(pa_protocol_native*p, const char*fn) {
3303     pa_assert(p);
3304
3305     p->auth_cookie_in_property = 0;
3306
3307     if (!fn && pa_authkey_prop_get(p->core, PA_NATIVE_COOKIE_PROPERTY_NAME, p->auth_cookie, sizeof(p->auth_cookie)) >= 0) {
3308         pa_log_info("using already loaded auth cookie.");
3309         pa_authkey_prop_ref(p->core, PA_NATIVE_COOKIE_PROPERTY_NAME);
3310         p->auth_cookie_in_property = 1;
3311         return 0;
3312     }
3313
3314     if (!fn)
3315         fn = PA_NATIVE_COOKIE_FILE;
3316
3317     if (pa_authkey_load_auto(fn, p->auth_cookie, sizeof(p->auth_cookie)) < 0)
3318         return -1;
3319
3320     pa_log_info("loading cookie from disk.");
3321
3322     if (pa_authkey_prop_put(p->core, PA_NATIVE_COOKIE_PROPERTY_NAME, p->auth_cookie, sizeof(p->auth_cookie)) >= 0)
3323         p->auth_cookie_in_property = 1;
3324
3325     return 0;
3326 }
3327
3328 static pa_protocol_native* protocol_new_internal(pa_core *c, pa_module *m, pa_modargs *ma) {
3329     pa_protocol_native *p;
3330     pa_bool_t public = FALSE;
3331     const char *acl;
3332
3333     pa_assert(c);
3334     pa_assert(ma);
3335
3336     if (pa_modargs_get_value_boolean(ma, "auth-anonymous", &public) < 0) {
3337         pa_log("auth-anonymous= expects a boolean argument.");
3338         return NULL;
3339     }
3340
3341     p = pa_xnew(pa_protocol_native, 1);
3342     p->core = c;
3343     p->module = m;
3344     p->public = public;
3345     p->server = NULL;
3346     p->auth_ip_acl = NULL;
3347
3348 #ifdef HAVE_CREDS
3349     {
3350         pa_bool_t a = 1;
3351         if (pa_modargs_get_value_boolean(ma, "auth-group-enabled", &a) < 0) {
3352             pa_log("auth-group-enabled= expects a boolean argument.");
3353             return NULL;
3354         }
3355         p->auth_group = a ? pa_xstrdup(pa_modargs_get_value(ma, "auth-group", c->is_system_instance ? PA_ACCESS_GROUP : NULL)) : NULL;
3356
3357         if (p->auth_group)
3358             pa_log_info("Allowing access to group '%s'.", p->auth_group);
3359     }
3360 #endif
3361
3362
3363     if ((acl = pa_modargs_get_value(ma, "auth-ip-acl", NULL))) {
3364
3365         if (!(p->auth_ip_acl = pa_ip_acl_new(acl))) {
3366             pa_log("Failed to parse IP ACL '%s'", acl);
3367             goto fail;
3368         }
3369     }
3370
3371     if (load_key(p, pa_modargs_get_value(ma, "cookie", NULL)) < 0)
3372         goto fail;
3373
3374     p->connections = pa_idxset_new(NULL, NULL);
3375
3376     return p;
3377
3378 fail:
3379 #ifdef HAVE_CREDS
3380     pa_xfree(p->auth_group);
3381 #endif
3382     if (p->auth_ip_acl)
3383         pa_ip_acl_free(p->auth_ip_acl);
3384     pa_xfree(p);
3385     return NULL;
3386 }
3387
3388 pa_protocol_native* pa_protocol_native_new(pa_core *core, pa_socket_server *server, pa_module *m, pa_modargs *ma) {
3389     char t[256];
3390     pa_protocol_native *p;
3391
3392     if (!(p = protocol_new_internal(core, m, ma)))
3393         return NULL;
3394
3395     p->server = server;
3396     pa_socket_server_set_callback(p->server, on_connection, p);
3397
3398     if (pa_socket_server_get_address(p->server, t, sizeof(t))) {
3399         pa_strlist *l;
3400         l = pa_property_get(core, PA_NATIVE_SERVER_PROPERTY_NAME);
3401         l = pa_strlist_prepend(l, t);
3402         pa_property_replace(core, PA_NATIVE_SERVER_PROPERTY_NAME, l);
3403     }
3404
3405     return p;
3406 }
3407
3408 void pa_protocol_native_free(pa_protocol_native *p) {
3409     connection *c;
3410     pa_assert(p);
3411
3412     while ((c = pa_idxset_first(p->connections, NULL)))
3413         connection_unlink(c);
3414     pa_idxset_free(p->connections, NULL, NULL);
3415
3416     if (p->server) {
3417         char t[256];
3418
3419         if (pa_socket_server_get_address(p->server, t, sizeof(t))) {
3420             pa_strlist *l;
3421             l = pa_property_get(p->core, PA_NATIVE_SERVER_PROPERTY_NAME);
3422             l = pa_strlist_remove(l, t);
3423
3424             if (l)
3425                 pa_property_replace(p->core, PA_NATIVE_SERVER_PROPERTY_NAME, l);
3426             else
3427                 pa_property_remove(p->core, PA_NATIVE_SERVER_PROPERTY_NAME);
3428         }
3429
3430         pa_socket_server_unref(p->server);
3431     }
3432
3433     if (p->auth_cookie_in_property)
3434         pa_authkey_prop_unref(p->core, PA_NATIVE_COOKIE_PROPERTY_NAME);
3435
3436     if (p->auth_ip_acl)
3437         pa_ip_acl_free(p->auth_ip_acl);
3438
3439 #ifdef HAVE_CREDS
3440     pa_xfree(p->auth_group);
3441 #endif
3442     pa_xfree(p);
3443 }
3444
3445 pa_protocol_native* pa_protocol_native_new_iochannel(
3446         pa_core*core,
3447         pa_iochannel *io,
3448         pa_module *m,
3449         pa_modargs *ma) {
3450
3451     pa_protocol_native *p;
3452
3453     if (!(p = protocol_new_internal(core, m, ma)))
3454         return NULL;
3455
3456     on_connection(NULL, io, p);
3457
3458     return p;
3459 }