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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31
  32 #include <pulse/timeval.h>
  33 #include <pulse/version.h>
  34 #include <pulse/utf8.h>
  35 #include <pulse/util.h>
  36 #include <pulse/xmalloc.h>
  37
  38 #include <pulsecore/native-common.h>
  39 #include <pulsecore/packet.h>
  40 #include <pulsecore/client.h>
  41 #include <pulsecore/source-output.h>
  42 #include <pulsecore/sink-input.h>
  43 #include <pulsecore/pstream.h>
  44 #include <pulsecore/tagstruct.h>
  45 #include <pulsecore/pdispatch.h>
  46 #include <pulsecore/pstream-util.h>
  47 #include <pulsecore/authkey.h>
  48 #include <pulsecore/namereg.h>
  49 #include <pulsecore/core-scache.h>
  50 #include <pulsecore/core-subscribe.h>
  51 #include <pulsecore/log.h>
  52 #include <pulsecore/autoload.h>
  53 #include <pulsecore/authkey-prop.h>
  54 #include <pulsecore/strlist.h>
  55 #include <pulsecore/shared.h>
  56 #include <pulsecore/sample-util.h>
  57 #include <pulsecore/llist.h>
  58 #include <pulsecore/creds.h>
  59 #include <pulsecore/core-util.h>
  60 #include <pulsecore/ipacl.h>
  61 #include <pulsecore/thread-mq.h>
  62
  63 #include "protocol-native.h"
  64
  65 /* Kick a client if it doesn't authenticate within this time */
  66 #define AUTH_TIMEOUT 60
  67
  68 /* Don't accept more connection than this */
  69 #define MAX_CONNECTIONS 64
  70
  71 #define MAX_MEMBLOCKQ_LENGTH (4*1024*1024) /* 4MB */
  72 #define DEFAULT_TLENGTH_MSEC 2000 /* 2s */
  73 #define DEFAULT_PROCESS_MSEC 20   /* 20ms */
  74 #define DEFAULT_FRAGSIZE_MSEC DEFAULT_TLENGTH_MSEC
  75
  76 typedef struct connection connection;
  77 struct pa_native_protocol;
  78
  79 typedef struct record_stream {
  80     pa_msgobject parent;
  81
  82     connection *connection;
  83     uint32_t index;
  84
  85     pa_source_output *source_output;
  86     pa_memblockq *memblockq;
  87     size_t fragment_size;
  88     pa_usec_t source_latency;
  89 } record_stream;
  90
  91 PA_DECLARE_CLASS(record_stream);
  92 #define RECORD_STREAM(o) (record_stream_cast(o))
  93 static PA_DEFINE_CHECK_TYPE(record_stream, pa_msgobject);
  94
  95 typedef struct output_stream {
  96     pa_msgobject parent;
  97 } output_stream;
  98
  99 PA_DECLARE_CLASS(output_stream);
 100 #define OUTPUT_STREAM(o) (output_stream_cast(o))
 101 static PA_DEFINE_CHECK_TYPE(output_stream, pa_msgobject);
 102
 103 typedef struct playback_stream {
 104     output_stream parent;
 105
 106     connection *connection;
 107     uint32_t index;
 108
 109     pa_sink_input *sink_input;
 110     pa_memblockq *memblockq;
 111     pa_bool_t is_underrun:1;
 112     pa_bool_t drain_request:1;
 113     uint32_t drain_tag;
 114     uint32_t syncid;
 115
 116     pa_atomic_t missing;
 117     size_t minreq;
 118     pa_usec_t sink_latency;
 119
 120     /* Only updated after SINK_INPUT_MESSAGE_UPDATE_LATENCY */
 121     int64_t read_index, write_index;
 122     size_t render_memblockq_length;
 123 } playback_stream;
 124
 125 PA_DECLARE_CLASS(playback_stream);
 126 #define PLAYBACK_STREAM(o) (playback_stream_cast(o))
 127 static PA_DEFINE_CHECK_TYPE(playback_stream, output_stream);
 128
 129 typedef struct upload_stream {
 130     output_stream parent;
 131
 132     connection *connection;
 133     uint32_t index;
 134
 135     pa_memchunk memchunk;
 136     size_t length;
 137     char *name;
 138     pa_sample_spec sample_spec;
 139     pa_channel_map channel_map;
 140     pa_proplist *proplist;
 141 } upload_stream;
 142
 143 PA_DECLARE_CLASS(upload_stream);
 144 #define UPLOAD_STREAM(o) (upload_stream_cast(o))
 145 static PA_DEFINE_CHECK_TYPE(upload_stream, output_stream);
 146
 147 struct connection {
 148     pa_msgobject parent;
 149     pa_native_protocol *protocol;
 150     pa_native_options *options;
 151     pa_bool_t authorized:1;
 152     pa_bool_t is_local:1;
 153     uint32_t version;
 154     pa_client *client;
 155     pa_pstream *pstream;
 156     pa_pdispatch *pdispatch;
 157     pa_idxset *record_streams, *output_streams;
 158     uint32_t rrobin_index;
 159     pa_subscription *subscription;
 160     pa_time_event *auth_timeout_event;
 161 };
 162
 163 PA_DECLARE_CLASS(connection);
 164 #define CONNECTION(o) (connection_cast(o))
 165 static PA_DEFINE_CHECK_TYPE(connection, pa_msgobject);
 166
 167 struct pa_native_protocol {
 168     PA_REFCNT_DECLARE;
 169
 170     pa_core *core;
 171     pa_idxset *connections;
 172
 173     pa_strlist *servers;
 174     pa_hook servers_changed;
 175
 176     /*     pa_hashmap *extensions; */
 177
 178 };
 179
 180 enum {
 181     SINK_INPUT_MESSAGE_POST_DATA = PA_SINK_INPUT_MESSAGE_MAX, /* data from main loop to sink input */
 182     SINK_INPUT_MESSAGE_DRAIN, /* disabled prebuf, get playback started. */
 183     SINK_INPUT_MESSAGE_FLUSH,
 184     SINK_INPUT_MESSAGE_TRIGGER,
 185     SINK_INPUT_MESSAGE_SEEK,
 186     SINK_INPUT_MESSAGE_PREBUF_FORCE,
 187     SINK_INPUT_MESSAGE_UPDATE_LATENCY
 188 };
 189
 190 enum {
 191     PLAYBACK_STREAM_MESSAGE_REQUEST_DATA,      /* data requested from sink input from the main loop */
 192     PLAYBACK_STREAM_MESSAGE_UNDERFLOW,
 193     PLAYBACK_STREAM_MESSAGE_OVERFLOW,
 194     PLAYBACK_STREAM_MESSAGE_DRAIN_ACK,
 195     PLAYBACK_STREAM_MESSAGE_STARTED
 196 };
 197
 198 enum {
 199     RECORD_STREAM_MESSAGE_POST_DATA         /* data from source output to main loop */
 200 };
 201
 202 enum {
 203     CONNECTION_MESSAGE_RELEASE,
 204     CONNECTION_MESSAGE_REVOKE
 205 };
 206
 207 static int sink_input_pop_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk);
 208 static void sink_input_kill_cb(pa_sink_input *i);
 209 static void sink_input_suspend_cb(pa_sink_input *i, pa_bool_t suspend);
 210 static void sink_input_moved_cb(pa_sink_input *i);
 211 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes);
 212 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes);
 213 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes);
 214
 215 static void send_memblock(connection *c);
 216 static void request_bytes(struct playback_stream*s);
 217
 218 static void source_output_kill_cb(pa_source_output *o);
 219 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk);
 220 static void source_output_suspend_cb(pa_source_output *o, pa_bool_t suspend);
 221 static void source_output_moved_cb(pa_source_output *o);
 222 static pa_usec_t source_output_get_latency_cb(pa_source_output *o);
 223
 224 static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
 225
 226 static void command_exit(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 227 static void command_create_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 228 static void command_drain_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 229 static void command_create_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 230 static void command_delete_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 231 static void command_auth(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 232 static void command_set_client_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 233 static void command_lookup(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 234 static void command_stat(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 235 static void command_get_playback_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 236 static void command_get_record_latency(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 237 static void command_create_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 238 static void command_finish_upload_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 239 static void command_play_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 240 static void command_remove_sample(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 241 static void command_get_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 242 static void command_get_info_list(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 243 static void command_get_server_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 244 static void command_subscribe(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 245 static void command_set_volume(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 246 static void command_set_mute(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 247 static void command_cork_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 248 static void command_trigger_or_flush_or_prebuf_playback_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 249 static void command_set_default_sink_or_source(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 250 static void command_set_stream_name(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 251 static void command_kill(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 252 static void command_load_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 253 static void command_unload_module(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 254 static void command_add_autoload(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 255 static void command_remove_autoload(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 256 static void command_get_autoload_info(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 257 static void command_get_autoload_info_list(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 258 static void command_cork_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 259 static void command_flush_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 260 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 261 static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 262 static void command_set_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 263 static void command_update_stream_sample_rate(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 264 static void command_update_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 265 static void command_remove_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 266
 267 static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
 268     [PA_COMMAND_ERROR] = NULL,
 269     [PA_COMMAND_TIMEOUT] = NULL,
 270     [PA_COMMAND_REPLY] = NULL,
 271     [PA_COMMAND_CREATE_PLAYBACK_STREAM] = command_create_playback_stream,
 272     [PA_COMMAND_DELETE_PLAYBACK_STREAM] = command_delete_stream,
 273     [PA_COMMAND_DRAIN_PLAYBACK_STREAM] = command_drain_playback_stream,
 274     [PA_COMMAND_CREATE_RECORD_STREAM] = command_create_record_stream,
 275     [PA_COMMAND_DELETE_RECORD_STREAM] = command_delete_stream,
 276     [PA_COMMAND_AUTH] = command_auth,
 277     [PA_COMMAND_REQUEST] = NULL,
 278     [PA_COMMAND_EXIT] = command_exit,
 279     [PA_COMMAND_SET_CLIENT_NAME] = command_set_client_name,
 280     [PA_COMMAND_LOOKUP_SINK] = command_lookup,
 281     [PA_COMMAND_LOOKUP_SOURCE] = command_lookup,
 282     [PA_COMMAND_STAT] = command_stat,
 283     [PA_COMMAND_GET_PLAYBACK_LATENCY] = command_get_playback_latency,
 284     [PA_COMMAND_GET_RECORD_LATENCY] = command_get_record_latency,
 285     [PA_COMMAND_CREATE_UPLOAD_STREAM] = command_create_upload_stream,
 286     [PA_COMMAND_DELETE_UPLOAD_STREAM] = command_delete_stream,
 287     [PA_COMMAND_FINISH_UPLOAD_STREAM] = command_finish_upload_stream,
 288     [PA_COMMAND_PLAY_SAMPLE] = command_play_sample,
 289     [PA_COMMAND_REMOVE_SAMPLE] = command_remove_sample,
 290     [PA_COMMAND_GET_SINK_INFO] = command_get_info,
 291     [PA_COMMAND_GET_SOURCE_INFO] = command_get_info,
 292     [PA_COMMAND_GET_CLIENT_INFO] = command_get_info,
 293     [PA_COMMAND_GET_MODULE_INFO] = command_get_info,
 294     [PA_COMMAND_GET_SINK_INPUT_INFO] = command_get_info,
 295     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = command_get_info,
 296     [PA_COMMAND_GET_SAMPLE_INFO] = command_get_info,
 297     [PA_COMMAND_GET_SINK_INFO_LIST] = command_get_info_list,
 298     [PA_COMMAND_GET_SOURCE_INFO_LIST] = command_get_info_list,
 299     [PA_COMMAND_GET_MODULE_INFO_LIST] = command_get_info_list,
 300     [PA_COMMAND_GET_CLIENT_INFO_LIST] = command_get_info_list,
 301     [PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = command_get_info_list,
 302     [PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = command_get_info_list,
 303     [PA_COMMAND_GET_SAMPLE_INFO_LIST] = command_get_info_list,
 304     [PA_COMMAND_GET_SERVER_INFO] = command_get_server_info,
 305     [PA_COMMAND_SUBSCRIBE] = command_subscribe,
 306
 307     [PA_COMMAND_SET_SINK_VOLUME] = command_set_volume,
 308     [PA_COMMAND_SET_SINK_INPUT_VOLUME] = command_set_volume,
 309     [PA_COMMAND_SET_SOURCE_VOLUME] = command_set_volume,
 310
 311     [PA_COMMAND_SET_SINK_MUTE] = command_set_mute,
 312     [PA_COMMAND_SET_SINK_INPUT_MUTE] = command_set_mute,
 313     [PA_COMMAND_SET_SOURCE_MUTE] = command_set_mute,
 314
 315     [PA_COMMAND_SUSPEND_SINK] = command_suspend,
 316     [PA_COMMAND_SUSPEND_SOURCE] = command_suspend,
 317
 318     [PA_COMMAND_CORK_PLAYBACK_STREAM] = command_cork_playback_stream,
 319     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 320     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 321     [PA_COMMAND_PREBUF_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
 322
 323     [PA_COMMAND_CORK_RECORD_STREAM] = command_cork_record_stream,
 324     [PA_COMMAND_FLUSH_RECORD_STREAM] = command_flush_record_stream,
 325
 326     [PA_COMMAND_SET_DEFAULT_SINK] = command_set_default_sink_or_source,
 327     [PA_COMMAND_SET_DEFAULT_SOURCE] = command_set_default_sink_or_source,
 328     [PA_COMMAND_SET_PLAYBACK_STREAM_NAME] = command_set_stream_name,
 329     [PA_COMMAND_SET_RECORD_STREAM_NAME] = command_set_stream_name,
 330     [PA_COMMAND_KILL_CLIENT] = command_kill,
 331     [PA_COMMAND_KILL_SINK_INPUT] = command_kill,
 332     [PA_COMMAND_KILL_SOURCE_OUTPUT] = command_kill,
 333     [PA_COMMAND_LOAD_MODULE] = command_load_module,
 334     [PA_COMMAND_UNLOAD_MODULE] = command_unload_module,
 335     [PA_COMMAND_GET_AUTOLOAD_INFO] = command_get_autoload_info,
 336     [PA_COMMAND_GET_AUTOLOAD_INFO_LIST] = command_get_autoload_info_list,
 337     [PA_COMMAND_ADD_AUTOLOAD] = command_add_autoload,
 338     [PA_COMMAND_REMOVE_AUTOLOAD] = command_remove_autoload,
 339
 340     [PA_COMMAND_MOVE_SINK_INPUT] = command_move_stream,
 341     [PA_COMMAND_MOVE_SOURCE_OUTPUT] = command_move_stream,
 342
 343     [PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR] = command_set_stream_buffer_attr,
 344     [PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR] = command_set_stream_buffer_attr,
 345
 346     [PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE] = command_update_stream_sample_rate,
 347     [PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE] = command_update_stream_sample_rate,
 348
 349     [PA_COMMAND_UPDATE_RECORD_STREAM_PROPLIST] = command_update_proplist,
 350     [PA_COMMAND_UPDATE_PLAYBACK_STREAM_PROPLIST] = command_update_proplist,
 351     [PA_COMMAND_UPDATE_CLIENT_PROPLIST] = command_update_proplist,
 352
 353     [PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST] = command_remove_proplist,
 354     [PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST] = command_remove_proplist,
 355     [PA_COMMAND_REMOVE_CLIENT_PROPLIST] = command_remove_proplist,
 356 };
 357
 358 /* structure management */
 359
 360 static void upload_stream_unlink(upload_stream *s) {
 361     pa_assert(s);
 362
 363     if (!s->connection)
 364         return;
 365
 366     pa_assert_se(pa_idxset_remove_by_data(s->connection->output_streams, s, NULL) == s);
 367     s->connection = NULL;
 368     upload_stream_unref(s);
 369 }
 370
 371 static void upload_stream_free(pa_object *o) {
 372     upload_stream *s = UPLOAD_STREAM(o);
 373     pa_assert(s);
 374
 375     upload_stream_unlink(s);
 376
 377     pa_xfree(s->name);
 378
 379     if (s->proplist)
 380         pa_proplist_free(s->proplist);
 381
 382     if (s->memchunk.memblock)
 383         pa_memblock_unref(s->memchunk.memblock);
 384
 385     pa_xfree(s);
 386 }
 387
 388 static upload_stream* upload_stream_new(
 389         connection *c,
 390         const pa_sample_spec *ss,
 391         const pa_channel_map *map,
 392         const char *name,
 393         size_t length,
 394         pa_proplist *p) {
 395
 396     upload_stream *s;
 397
 398     pa_assert(c);
 399     pa_assert(ss);
 400     pa_assert(name);
 401     pa_assert(length > 0);
 402     pa_assert(p);
 403
 404     s = pa_msgobject_new(upload_stream);
 405     s->parent.parent.parent.free = upload_stream_free;
 406     s->connection = c;
 407     s->sample_spec = *ss;
 408     s->channel_map = *map;
 409     s->name = pa_xstrdup(name);
 410     pa_memchunk_reset(&s->memchunk);
 411     s->length = length;
 412     s->proplist = pa_proplist_copy(p);
 413     pa_proplist_update(s->proplist, PA_UPDATE_MERGE, c->client->proplist);
 414
 415     pa_idxset_put(c->output_streams, s, &s->index);
 416
 417     return s;
 418 }
 419
 420 static void record_stream_unlink(record_stream *s) {
 421     pa_assert(s);
 422
 423     if (!s->connection)
 424         return;
 425
 426     if (s->source_output) {
 427         pa_source_output_unlink(s->source_output);
 428         pa_source_output_unref(s->source_output);
 429         s->source_output = NULL;
 430     }
 431
 432     pa_assert_se(pa_idxset_remove_by_data(s->connection->record_streams, s, NULL) == s);
 433     s->connection = NULL;
 434     record_stream_unref(s);
 435 }
 436
 437 static void record_stream_free(pa_object *o) {
 438     record_stream *s = RECORD_STREAM(o);
 439     pa_assert(s);
 440
 441     record_stream_unlink(s);
 442
 443     pa_memblockq_free(s->memblockq);
 444     pa_xfree(s);
 445 }
 446
 447 static int record_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 448     record_stream *s = RECORD_STREAM(o);
 449     record_stream_assert_ref(s);
 450
 451     if (!s->connection)
 452         return -1;
 453
 454     switch (code) {
 455
 456         case RECORD_STREAM_MESSAGE_POST_DATA:
 457
 458             if (pa_memblockq_push_align(s->memblockq, chunk) < 0) {
 459 /*                 pa_log_warn("Failed to push data into output queue."); */
 460                 return -1;
 461             }
 462
 463             if (!pa_pstream_is_pending(s->connection->pstream))
 464                 send_memblock(s->connection);
 465
 466             break;
 467     }
 468
 469     return 0;
 470 }
 471
 472 static void fix_record_buffer_attr_pre(record_stream *s, pa_bool_t adjust_latency, uint32_t *maxlength, uint32_t *fragsize) {
 473     pa_assert(s);
 474     pa_assert(maxlength);
 475     pa_assert(fragsize);
 476
 477     if (*maxlength == (uint32_t) -1 || *maxlength > MAX_MEMBLOCKQ_LENGTH)
 478         *maxlength = MAX_MEMBLOCKQ_LENGTH;
 479     if (*maxlength <= 0)
 480         *maxlength = pa_frame_size(&s->source_output->sample_spec);
 481
 482     if (*fragsize == (uint32_t) -1)
 483         *fragsize = pa_usec_to_bytes(DEFAULT_FRAGSIZE_MSEC*PA_USEC_PER_MSEC, &s->source_output->sample_spec);
 484     if (*fragsize <= 0)
 485         *fragsize = pa_frame_size(&s->source_output->sample_spec);
 486
 487     if (adjust_latency) {
 488         pa_usec_t fragsize_usec;
 489
 490         /* So, the user asked us to adjust the latency according to
 491          * what the source can provide. Half the latency will be
 492          * spent on the hw buffer, half of it in the async buffer
 493          * queue we maintain for each client. */
 494
 495         fragsize_usec = pa_bytes_to_usec(*fragsize, &s->source_output->sample_spec);
 496
 497         s->source_latency = pa_source_output_set_requested_latency(s->source_output, fragsize_usec/2);
 498
 499         if (fragsize_usec >= s->source_latency*2)
 500             fragsize_usec -= s->source_latency;
 501         else
 502             fragsize_usec = s->source_latency;
 503
 504         *fragsize = pa_usec_to_bytes(fragsize_usec, &s->source_output->sample_spec);
 505     } else
 506         s->source_latency = 0;
 507 }
 508
 509 static void fix_record_buffer_attr_post(record_stream *s, uint32_t *maxlength, uint32_t *fragsize) {
 510     size_t base;
 511
 512     pa_assert(s);
 513     pa_assert(maxlength);
 514     pa_assert(fragsize);
 515
 516     *maxlength = pa_memblockq_get_maxlength(s->memblockq);
 517
 518     base = pa_frame_size(&s->source_output->sample_spec);
 519
 520     s->fragment_size = (*fragsize/base)*base;
 521     if (s->fragment_size <= 0)
 522         s->fragment_size = base;
 523
 524     if (s->fragment_size > *maxlength)
 525         s->fragment_size = *maxlength;
 526
 527     *fragsize = s->fragment_size;
 528 }
 529
 530 static record_stream* record_stream_new(
 531         connection *c,
 532         pa_source *source,
 533         pa_sample_spec *ss,
 534         pa_channel_map *map,
 535         pa_bool_t peak_detect,
 536         uint32_t *maxlength,
 537         uint32_t *fragsize,
 538         pa_source_output_flags_t flags,
 539         pa_proplist *p,
 540         pa_bool_t adjust_latency,
 541         pa_sink_input *direct_on_input) {
 542
 543     record_stream *s;
 544     pa_source_output *source_output;
 545     size_t base;
 546     pa_source_output_new_data data;
 547
 548     pa_assert(c);
 549     pa_assert(ss);
 550     pa_assert(maxlength);
 551     pa_assert(p);
 552
 553     pa_source_output_new_data_init(&data);
 554
 555     pa_proplist_update(data.proplist, PA_UPDATE_REPLACE, p);
 556     pa_proplist_update(data.proplist, PA_UPDATE_MERGE, c->client->proplist);
 557     data.driver = __FILE__;
 558     data.module = c->options->module;
 559     data.client = c->client;
 560     data.source = source;
 561     data.direct_on_input = direct_on_input;
 562     pa_source_output_new_data_set_sample_spec(&data, ss);
 563     pa_source_output_new_data_set_channel_map(&data, map);
 564     if (peak_detect)
 565         data.resample_method = PA_RESAMPLER_PEAKS;
 566
 567     source_output = pa_source_output_new(c->protocol->core, &data, flags);
 568
 569     pa_source_output_new_data_done(&data);
 570
 571     if (!source_output)
 572         return NULL;
 573
 574     s = pa_msgobject_new(record_stream);
 575     s->parent.parent.free = record_stream_free;
 576     s->parent.process_msg = record_stream_process_msg;
 577     s->connection = c;
 578     s->source_output = source_output;
 579
 580     s->source_output->push = source_output_push_cb;
 581     s->source_output->kill = source_output_kill_cb;
 582     s->source_output->get_latency = source_output_get_latency_cb;
 583     s->source_output->moved = source_output_moved_cb;
 584     s->source_output->suspend = source_output_suspend_cb;
 585     s->source_output->userdata = s;
 586
 587     fix_record_buffer_attr_pre(s, adjust_latency, maxlength, fragsize);
 588
 589     s->memblockq = pa_memblockq_new(
 590             0,
 591             *maxlength,
 592             0,
 593             base = pa_frame_size(&source_output->sample_spec),
 594             1,
 595             0,
 596             0,
 597             NULL);
 598
 599     fix_record_buffer_attr_post(s, maxlength, fragsize);
 600
 601     *ss = s->source_output->sample_spec;
 602     *map = s->source_output->channel_map;
 603
 604     pa_idxset_put(c->record_streams, s, &s->index);
 605
 606     pa_log_info("Final latency %0.2f ms = %0.2f ms + %0.2f ms",
 607                 ((double) pa_bytes_to_usec(s->fragment_size, &source_output->sample_spec) + (double) s->source_latency) / PA_USEC_PER_MSEC,
 608                 (double) pa_bytes_to_usec(s->fragment_size, &source_output->sample_spec) / PA_USEC_PER_MSEC,
 609                 (double) s->source_latency / PA_USEC_PER_MSEC);
 610
 611     pa_source_output_put(s->source_output);
 612     return s;
 613 }
 614
 615 static void playback_stream_unlink(playback_stream *s) {
 616     pa_assert(s);
 617
 618     if (!s->connection)
 619         return;
 620
 621     if (s->sink_input) {
 622         pa_sink_input_unlink(s->sink_input);
 623         pa_sink_input_unref(s->sink_input);
 624         s->sink_input = NULL;
 625     }
 626
 627     if (s->drain_request)
 628         pa_pstream_send_error(s->connection->pstream, s->drain_tag, PA_ERR_NOENTITY);
 629
 630     pa_assert_se(pa_idxset_remove_by_data(s->connection->output_streams, s, NULL) == s);
 631     s->connection = NULL;
 632     playback_stream_unref(s);
 633 }
 634
 635 static void playback_stream_free(pa_object* o) {
 636     playback_stream *s = PLAYBACK_STREAM(o);
 637     pa_assert(s);
 638
 639     playback_stream_unlink(s);
 640
 641     pa_memblockq_free(s->memblockq);
 642     pa_xfree(s);
 643 }
 644
 645 static int playback_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 646     playback_stream *s = PLAYBACK_STREAM(o);
 647     playback_stream_assert_ref(s);
 648
 649     if (!s->connection)
 650         return -1;
 651
 652     switch (code) {
 653         case PLAYBACK_STREAM_MESSAGE_REQUEST_DATA: {
 654             pa_tagstruct *t;
 655             uint32_t l = 0;
 656
 657             for (;;) {
 658                 if ((l = pa_atomic_load(&s->missing)) <= 0)
 659                     break;
 660
 661                 if (pa_atomic_cmpxchg(&s->missing, l, 0))
 662                     break;
 663             }
 664
 665             if (l <= 0)
 666                 break;
 667
 668             t = pa_tagstruct_new(NULL, 0);
 669             pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
 670             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 671             pa_tagstruct_putu32(t, s->index);
 672             pa_tagstruct_putu32(t, l);
 673             pa_pstream_send_tagstruct(s->connection->pstream, t);
 674
 675 /*             pa_log("Requesting %lu bytes", (unsigned long) l); */
 676             break;
 677         }
 678
 679         case PLAYBACK_STREAM_MESSAGE_UNDERFLOW: {
 680             pa_tagstruct *t;
 681
 682             /* Report that we're empty */
 683             t = pa_tagstruct_new(NULL, 0);
 684             pa_tagstruct_putu32(t, PA_COMMAND_UNDERFLOW);
 685             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 686             pa_tagstruct_putu32(t, s->index);
 687             pa_pstream_send_tagstruct(s->connection->pstream, t);
 688             break;
 689         }
 690
 691         case PLAYBACK_STREAM_MESSAGE_OVERFLOW: {
 692             pa_tagstruct *t;
 693
 694             /* Notify the user we're overflowed*/
 695             t = pa_tagstruct_new(NULL, 0);
 696             pa_tagstruct_putu32(t, PA_COMMAND_OVERFLOW);
 697             pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 698             pa_tagstruct_putu32(t, s->index);
 699             pa_pstream_send_tagstruct(s->connection->pstream, t);
 700             break;
 701         }
 702
 703         case PLAYBACK_STREAM_MESSAGE_STARTED:
 704
 705             if (s->connection->version >= 13) {
 706                 pa_tagstruct *t;
 707
 708                 /* Notify the user we're overflowed*/
 709                 t = pa_tagstruct_new(NULL, 0);
 710                 pa_tagstruct_putu32(t, PA_COMMAND_STARTED);
 711                 pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
 712                 pa_tagstruct_putu32(t, s->index);
 713                 pa_pstream_send_tagstruct(s->connection->pstream, t);
 714             }
 715
 716             break;
 717
 718         case PLAYBACK_STREAM_MESSAGE_DRAIN_ACK:
 719             pa_pstream_send_simple_ack(s->connection->pstream, PA_PTR_TO_UINT(userdata));
 720             break;
 721     }
 722
 723     return 0;
 724 }
 725
 726 static void fix_playback_buffer_attr_pre(playback_stream *s, pa_bool_t adjust_latency, uint32_t *maxlength, uint32_t *tlength, uint32_t* prebuf, uint32_t* minreq) {
 727     size_t frame_size;
 728     pa_usec_t tlength_usec, minreq_usec, sink_usec;
 729
 730     pa_assert(s);
 731     pa_assert(maxlength);
 732     pa_assert(tlength);
 733     pa_assert(prebuf);
 734     pa_assert(minreq);
 735
 736     frame_size = pa_frame_size(&s->sink_input->sample_spec);
 737
 738     if (*maxlength == (uint32_t) -1 || *maxlength > MAX_MEMBLOCKQ_LENGTH)
 739         *maxlength = MAX_MEMBLOCKQ_LENGTH;
 740     if (*maxlength <= 0)
 741         *maxlength = frame_size;
 742
 743     if (*tlength == (uint32_t) -1)
 744         *tlength = pa_usec_to_bytes(DEFAULT_TLENGTH_MSEC*PA_USEC_PER_MSEC, &s->sink_input->sample_spec);
 745     if (*tlength <= 0)
 746         *tlength = frame_size;
 747
 748     if (*minreq == (uint32_t) -1)
 749         *minreq = pa_usec_to_bytes(DEFAULT_PROCESS_MSEC*PA_USEC_PER_MSEC, &s->sink_input->sample_spec);
 750     if (*minreq <= 0)
 751         *minreq = frame_size;
 752
 753     if (*tlength < *minreq+frame_size)
 754         *tlength = *minreq+frame_size;
 755
 756     tlength_usec = pa_bytes_to_usec(*tlength, &s->sink_input->sample_spec);
 757     minreq_usec = pa_bytes_to_usec(*minreq, &s->sink_input->sample_spec);
 758
 759     pa_log_info("Requested tlength=%0.2f ms, minreq=%0.2f ms",
 760                 (double) tlength_usec / PA_USEC_PER_MSEC,
 761                 (double) minreq_usec / PA_USEC_PER_MSEC);
 762
 763     if (adjust_latency) {
 764
 765         /* So, the user asked us to adjust the latency of the stream
 766          * buffer according to the what the sink can provide. The
 767          * tlength passed in shall be the overall latency. Roughly
 768          * half the latency will be spent on the hw buffer, the other
 769          * half of it in the async buffer queue we maintain for each
 770          * client. In between we'll have a safety space of size
 771          * 2*minreq. Why the 2*minreq? When the hw buffer is completey
 772          * empty and needs to be filled, then our buffer must have
 773          * enough data to fulfill this request immediatly and thus
 774          * have at least the same tlength as the size of the hw
 775          * buffer. It additionally needs space for 2 times minreq
 776          * because if the buffer ran empty and a partial fillup
 777          * happens immediately on the next iteration we need to be
 778          * able to fulfill it and give the application also minreq
 779          * time to fill it up again for the next request Makes 2 times
 780          * minreq in plus.. */
 781
 782         if (tlength_usec > minreq_usec*2)
 783             sink_usec = (tlength_usec - minreq_usec*2)/2;
 784         else
 785             sink_usec = 0;
 786
 787     } else {
 788
 789         /* Ok, the user didn't ask us to adjust the latency, but we
 790          * still need to make sure that the parameters from the user
 791          * do make sense. */
 792
 793         if (tlength_usec > minreq_usec*2)
 794             sink_usec = (tlength_usec - minreq_usec*2);
 795         else
 796             sink_usec = 0;
 797     }
 798
 799     s->sink_latency = pa_sink_input_set_requested_latency(s->sink_input, sink_usec);
 800
 801     if (adjust_latency) {
 802         /* Ok, we didn't necessarily get what we were asking for, so
 803          * let's subtract from what we asked for for the remaining
 804          * buffer space */
 805
 806         if (tlength_usec >= s->sink_latency)
 807             tlength_usec -= s->sink_latency;
 808     }
 809
 810     /* FIXME: This is actually larger than necessary, since not all of
 811      * the sink latency is actually rewritable. */
 812     if (tlength_usec < s->sink_latency + 2*minreq_usec)
 813         tlength_usec = s->sink_latency + 2*minreq_usec;
 814
 815     *tlength = pa_usec_to_bytes(tlength_usec, &s->sink_input->sample_spec);
 816     *minreq = pa_usec_to_bytes(minreq_usec, &s->sink_input->sample_spec);
 817
 818     if (*minreq <= 0) {
 819         *minreq += frame_size;
 820         *tlength += frame_size*2;
 821     }
 822
 823     if (*tlength <= *minreq)
 824         *tlength =  *minreq*2 + frame_size;
 825
 826     if (*prebuf == (uint32_t) -1 || *prebuf > *tlength)
 827         *prebuf = *tlength;
 828 }
 829
 830 static void fix_playback_buffer_attr_post(playback_stream *s, uint32_t *maxlength, uint32_t *tlength, uint32_t* prebuf, uint32_t* minreq) {
 831     pa_assert(s);
 832     pa_assert(maxlength);
 833     pa_assert(tlength);
 834     pa_assert(prebuf);
 835     pa_assert(minreq);
 836
 837     *maxlength = (uint32_t) pa_memblockq_get_maxlength(s->memblockq);
 838     *tlength = (uint32_t) pa_memblockq_get_tlength(s->memblockq);
 839     *prebuf = (uint32_t) pa_memblockq_get_prebuf(s->memblockq);
 840     *minreq = (uint32_t) pa_memblockq_get_minreq(s->memblockq);
 841
 842     s->minreq = *minreq;
 843 }
 844
 845 static playback_stream* playback_stream_new(
 846         connection *c,
 847         pa_sink *sink,
 848         pa_sample_spec *ss,
 849         pa_channel_map *map,
 850         uint32_t *maxlength,
 851         uint32_t *tlength,
 852         uint32_t *prebuf,
 853         uint32_t *minreq,
 854         pa_cvolume *volume,
 855         pa_bool_t muted,
 856         uint32_t syncid,
 857         uint32_t *missing,
 858         pa_sink_input_flags_t flags,
 859         pa_proplist *p,
 860         pa_bool_t adjust_latency) {
 861
 862     playback_stream *s, *ssync;
 863     pa_sink_input *sink_input;
 864     pa_memchunk silence;
 865     uint32_t idx;
 866     int64_t start_index;
 867     pa_sink_input_new_data data;
 868
 869     pa_assert(c);
 870     pa_assert(ss);
 871     pa_assert(maxlength);
 872     pa_assert(tlength);
 873     pa_assert(prebuf);
 874     pa_assert(minreq);
 875     pa_assert(volume);
 876     pa_assert(missing);
 877     pa_assert(p);
 878
 879     /* Find syncid group */
 880     for (ssync = pa_idxset_first(c->output_streams, &idx); ssync; ssync = pa_idxset_next(c->output_streams, &idx)) {
 881
 882         if (!playback_stream_isinstance(ssync))
 883             continue;
 884
 885         if (ssync->syncid == syncid)
 886             break;
 887     }
 888
 889     /* Synced streams must connect to the same sink */
 890     if (ssync) {
 891
 892         if (!sink)
 893             sink = ssync->sink_input->sink;
 894         else if (sink != ssync->sink_input->sink)
 895             return NULL;
 896     }
 897
 898     pa_sink_input_new_data_init(&data);
 899
 900     pa_proplist_update(data.proplist, PA_UPDATE_REPLACE, p);
 901     pa_proplist_update(data.proplist, PA_UPDATE_MERGE, c->client->proplist);
 902     data.driver = __FILE__;
 903     data.module = c->options->module;
 904     data.client = c->client;
 905     data.sink = sink;
 906     pa_sink_input_new_data_set_sample_spec(&data, ss);
 907     pa_sink_input_new_data_set_channel_map(&data, map);
 908     pa_sink_input_new_data_set_volume(&data, volume);
 909     pa_sink_input_new_data_set_muted(&data, muted);
 910     data.sync_base = ssync ? ssync->sink_input : NULL;
 911
 912     sink_input = pa_sink_input_new(c->protocol->core, &data, flags);
 913
 914     pa_sink_input_new_data_done(&data);
 915
 916     if (!sink_input)
 917         return NULL;
 918
 919     s = pa_msgobject_new(playback_stream);
 920     s->parent.parent.parent.free = playback_stream_free;
 921     s->parent.parent.process_msg = playback_stream_process_msg;
 922     s->connection = c;
 923     s->syncid = syncid;
 924     s->sink_input = sink_input;
 925     s->is_underrun = TRUE;
 926     s->drain_request = FALSE;
 927     pa_atomic_store(&s->missing, 0);
 928
 929     s->sink_input->parent.process_msg = sink_input_process_msg;
 930     s->sink_input->pop = sink_input_pop_cb;
 931     s->sink_input->process_rewind = sink_input_process_rewind_cb;
 932     s->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
 933     s->sink_input->update_max_request = sink_input_update_max_request_cb;
 934     s->sink_input->kill = sink_input_kill_cb;
 935     s->sink_input->moved = sink_input_moved_cb;
 936     s->sink_input->suspend = sink_input_suspend_cb;
 937     s->sink_input->userdata = s;
 938
 939     start_index = ssync ? pa_memblockq_get_read_index(ssync->memblockq) : 0;
 940
 941     fix_playback_buffer_attr_pre(s, adjust_latency, maxlength, tlength, prebuf, minreq);
 942     pa_sink_input_get_silence(sink_input, &silence);
 943
 944     s->memblockq = pa_memblockq_new(
 945             start_index,
 946             *maxlength,
 947             *tlength,
 948             pa_frame_size(&sink_input->sample_spec),
 949             *prebuf,
 950             *minreq,
 951             0,
 952             &silence);
 953
 954     pa_memblock_unref(silence.memblock);
 955     fix_playback_buffer_attr_post(s, maxlength, tlength, prebuf, minreq);
 956
 957     *missing = (uint32_t) pa_memblockq_pop_missing(s->memblockq);
 958
 959     *ss = s->sink_input->sample_spec;
 960     *map = s->sink_input->channel_map;
 961
 962     pa_idxset_put(c->output_streams, s, &s->index);
 963
 964     pa_log_info("Final latency %0.2f ms = %0.2f ms + 2*%0.2f ms + %0.2f ms",
 965                 ((double) pa_bytes_to_usec(*tlength, &sink_input->sample_spec) + (double) s->sink_latency) / PA_USEC_PER_MSEC,
 966                 (double) pa_bytes_to_usec(*tlength-*minreq*2, &sink_input->sample_spec) / PA_USEC_PER_MSEC,
 967                 (double) pa_bytes_to_usec(*minreq, &sink_input->sample_spec) / PA_USEC_PER_MSEC,
 968                 (double) s->sink_latency / PA_USEC_PER_MSEC);
 969
 970     pa_sink_input_put(s->sink_input);
 971     return s;
 972 }
 973
 974 static int connection_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
 975     connection *c = CONNECTION(o);
 976     connection_assert_ref(c);
 977
 978     if (!c->protocol)
 979         return -1;
 980
 981     switch (code) {
 982
 983         case CONNECTION_MESSAGE_REVOKE:
 984             pa_pstream_send_revoke(c->pstream, PA_PTR_TO_UINT(userdata));
 985             break;
 986
 987         case CONNECTION_MESSAGE_RELEASE:
 988             pa_pstream_send_release(c->pstream, PA_PTR_TO_UINT(userdata));
 989             break;
 990     }
 991
 992     return 0;
 993 }
 994
 995 static void connection_unlink(connection *c) {
 996     record_stream *r;
 997     output_stream *o;
 998
 999     pa_assert(c);
1000
1001     if (!c->protocol)
1002         return;
1003
1004     if (c->options)
1005         pa_native_options_unref(c->options);
1006
1007     while ((r = pa_idxset_first(c->record_streams, NULL)))
1008         record_stream_unlink(r);
1009
1010     while ((o = pa_idxset_first(c->output_streams, NULL)))
1011         if (playback_stream_isinstance(o))
1012             playback_stream_unlink(PLAYBACK_STREAM(o));
1013         else
1014             upload_stream_unlink(UPLOAD_STREAM(o));
1015
1016     if (c->subscription)
1017         pa_subscription_free(c->subscription);
1018
1019     if (c->pstream)
1020         pa_pstream_unlink(c->pstream);
1021
1022     if (c->auth_timeout_event) {
1023         c->protocol->core->mainloop->time_free(c->auth_timeout_event);
1024         c->auth_timeout_event = NULL;
1025     }
1026
1027     pa_assert_se(pa_idxset_remove_by_data(c->protocol->connections, c, NULL) == c);
1028     c->protocol = NULL;
1029     connection_unref(c);
1030 }
1031
1032 static void connection_free(pa_object *o) {
1033     connection *c = CONNECTION(o);
1034
1035     pa_assert(c);
1036
1037     connection_unlink(c);
1038
1039     pa_idxset_free(c->record_streams, NULL, NULL);
1040     pa_idxset_free(c->output_streams, NULL, NULL);
1041
1042     pa_pdispatch_unref(c->pdispatch);
1043     pa_pstream_unref(c->pstream);
1044     pa_client_free(c->client);
1045
1046     pa_xfree(c);
1047 }
1048
1049 /* Called from thread context */
1050 static void request_bytes(playback_stream *s) {
1051     size_t m, previous_missing;
1052
1053     playback_stream_assert_ref(s);
1054
1055     m = pa_memblockq_pop_missing(s->memblockq);
1056
1057     if (m <= 0)
1058         return;
1059
1060 /*     pa_log("request_bytes(%lu)", (unsigned long) m); */
1061
1062     previous_missing = pa_atomic_add(&s->missing, m);
1063
1064     if (pa_memblockq_prebuf_active(s->memblockq) ||
1065         (previous_missing < s->minreq && previous_missing+m >= s->minreq))
1066         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_REQUEST_DATA, NULL, 0, NULL, NULL);
1067 }
1068
1069 static void send_memblock(connection *c) {
1070     uint32_t start;
1071     record_stream *r;
1072
1073     start = PA_IDXSET_INVALID;
1074     for (;;) {
1075         pa_memchunk chunk;
1076
1077         if (!(r = RECORD_STREAM(pa_idxset_rrobin(c->record_streams, &c->rrobin_index))))
1078             return;
1079
1080         if (start == PA_IDXSET_INVALID)
1081             start = c->rrobin_index;
1082         else if (start == c->rrobin_index)
1083             return;
1084
1085         if (pa_memblockq_peek(r->memblockq,  &chunk) >= 0) {
1086             pa_memchunk schunk = chunk;
1087
1088             if (schunk.length > r->fragment_size)
1089                 schunk.length = r->fragment_size;
1090
1091             pa_pstream_send_memblock(c->pstream, r->index, 0, PA_SEEK_RELATIVE, &schunk);
1092
1093             pa_memblockq_drop(r->memblockq, schunk.length);
1094             pa_memblock_unref(schunk.memblock);
1095
1096             return;
1097         }
1098     }
1099 }
1100
1101 static void send_playback_stream_killed(playback_stream *p) {
1102     pa_tagstruct *t;
1103     playback_stream_assert_ref(p);
1104
1105     t = pa_tagstruct_new(NULL, 0);
1106     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
1107     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1108     pa_tagstruct_putu32(t, p->index);
1109     pa_pstream_send_tagstruct(p->connection->pstream, t);
1110 }
1111
1112 static void send_record_stream_killed(record_stream *r) {
1113     pa_tagstruct *t;
1114     record_stream_assert_ref(r);
1115
1116     t = pa_tagstruct_new(NULL, 0);
1117     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
1118     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1119     pa_tagstruct_putu32(t, r->index);
1120     pa_pstream_send_tagstruct(r->connection->pstream, t);
1121 }
1122
1123 /*** sink input callbacks ***/
1124
1125 static void handle_seek(playback_stream *s, int64_t indexw) {
1126     playback_stream_assert_ref(s);
1127
1128 /*     pa_log("handle_seek: %llu -- %i", (unsigned long long) s->sink_input->thread_info.underrun_for, pa_memblockq_is_readable(s->memblockq)); */
1129
1130     if (s->sink_input->thread_info.underrun_for > 0) {
1131
1132 /*         pa_log("%lu vs. %lu", (unsigned long) pa_memblockq_get_length(s->memblockq), (unsigned long) pa_memblockq_get_prebuf(s->memblockq)); */
1133
1134         if (pa_memblockq_is_readable(s->memblockq)) {
1135
1136             /* We just ended an underrun, let's ask the sink
1137              * for a complete rewind rewrite */
1138
1139             pa_log_debug("Requesting rewind due to end of underrun.");
1140             pa_sink_input_request_rewind(s->sink_input,
1141                                          s->sink_input->thread_info.underrun_for == (size_t) -1 ? 0 : s->sink_input->thread_info.underrun_for,
1142                                          FALSE, TRUE);
1143         }
1144
1145     } else {
1146         int64_t indexr;
1147
1148         indexr = pa_memblockq_get_read_index(s->memblockq);
1149
1150         if (indexw < indexr) {
1151             /* OK, the sink already asked for this data, so
1152              * let's have it usk us again */
1153
1154             pa_log_debug("Requesting rewind due to rewrite.");
1155             pa_sink_input_request_rewind(s->sink_input, indexr - indexw, TRUE, FALSE);
1156         }
1157     }
1158
1159     request_bytes(s);
1160 }
1161
1162 /* Called from thread context */
1163 static int sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1164     pa_sink_input *i = PA_SINK_INPUT(o);
1165     playback_stream *s;
1166
1167     pa_sink_input_assert_ref(i);
1168     s = PLAYBACK_STREAM(i->userdata);
1169     playback_stream_assert_ref(s);
1170
1171     switch (code) {
1172
1173         case SINK_INPUT_MESSAGE_SEEK: {
1174             int64_t windex;
1175
1176             windex = pa_memblockq_get_write_index(s->memblockq);
1177             pa_memblockq_seek(s->memblockq, offset, PA_PTR_TO_UINT(userdata));
1178
1179             handle_seek(s, windex);
1180             return 0;
1181         }
1182
1183         case SINK_INPUT_MESSAGE_POST_DATA: {
1184             int64_t windex;
1185
1186             pa_assert(chunk);
1187
1188             windex = pa_memblockq_get_write_index(s->memblockq);
1189
1190 /*             pa_log("sink input post: %lu %lli", (unsigned long) chunk->length, (long long) windex); */
1191
1192             if (pa_memblockq_push_align(s->memblockq, chunk) < 0) {
1193                 pa_log_warn("Failed to push data into queue");
1194                 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_OVERFLOW, NULL, 0, NULL, NULL);
1195                 pa_memblockq_seek(s->memblockq, chunk->length, PA_SEEK_RELATIVE);
1196             }
1197
1198             handle_seek(s, windex);
1199
1200 /*             pa_log("sink input post2: %lu", (unsigned long) pa_memblockq_get_length(s->memblockq)); */
1201
1202             return 0;
1203         }
1204
1205         case SINK_INPUT_MESSAGE_DRAIN:
1206         case SINK_INPUT_MESSAGE_FLUSH:
1207         case SINK_INPUT_MESSAGE_PREBUF_FORCE:
1208         case SINK_INPUT_MESSAGE_TRIGGER: {
1209
1210             int64_t windex;
1211             pa_sink_input *isync;
1212             void (*func)(pa_memblockq *bq);
1213
1214             switch  (code) {
1215                 case SINK_INPUT_MESSAGE_FLUSH:
1216                     func = pa_memblockq_flush_write;
1217                     break;
1218
1219                 case SINK_INPUT_MESSAGE_PREBUF_FORCE:
1220                     func = pa_memblockq_prebuf_force;
1221                     break;
1222
1223                 case SINK_INPUT_MESSAGE_DRAIN:
1224                 case SINK_INPUT_MESSAGE_TRIGGER:
1225                     func = pa_memblockq_prebuf_disable;
1226                     break;
1227
1228                 default:
1229                     pa_assert_not_reached();
1230             }
1231
1232             windex = pa_memblockq_get_write_index(s->memblockq);
1233             func(s->memblockq);
1234             handle_seek(s, windex);
1235
1236             /* Do the same for all other members in the sync group */
1237             for (isync = i->sync_prev; isync; isync = isync->sync_prev) {
1238                 playback_stream *ssync = PLAYBACK_STREAM(isync->userdata);
1239                 windex = pa_memblockq_get_write_index(ssync->memblockq);
1240                 func(ssync->memblockq);
1241                 handle_seek(ssync, windex);
1242             }
1243
1244             for (isync = i->sync_next; isync; isync = isync->sync_next) {
1245                 playback_stream *ssync = PLAYBACK_STREAM(isync->userdata);
1246                 windex = pa_memblockq_get_write_index(ssync->memblockq);
1247                 func(ssync->memblockq);
1248                 handle_seek(ssync, windex);
1249             }
1250
1251             if (code == SINK_INPUT_MESSAGE_DRAIN) {
1252                 if (!pa_memblockq_is_readable(s->memblockq))
1253                     pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_DRAIN_ACK, userdata, 0, NULL, NULL);
1254                 else {
1255                     s->drain_tag = PA_PTR_TO_UINT(userdata);
1256                     s->drain_request = TRUE;
1257                 }
1258             }
1259
1260             return 0;
1261         }
1262
1263         case SINK_INPUT_MESSAGE_UPDATE_LATENCY:
1264
1265             s->read_index = pa_memblockq_get_read_index(s->memblockq);
1266             s->write_index = pa_memblockq_get_write_index(s->memblockq);
1267             s->render_memblockq_length = pa_memblockq_get_length(s->sink_input->thread_info.render_memblockq);
1268             return 0;
1269
1270         case PA_SINK_INPUT_MESSAGE_SET_STATE: {
1271             int64_t windex;
1272
1273             windex = pa_memblockq_get_write_index(s->memblockq);
1274
1275             pa_memblockq_prebuf_force(s->memblockq);
1276
1277             handle_seek(s, windex);
1278
1279             /* Fall through to the default handler */
1280             break;
1281         }
1282
1283         case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
1284             pa_usec_t *r = userdata;
1285
1286             *r = pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &i->sample_spec);
1287
1288             /* Fall through, the default handler will add in the extra
1289              * latency added by the resampler */
1290             break;
1291         }
1292     }
1293
1294     return pa_sink_input_process_msg(o, code, userdata, offset, chunk);
1295 }
1296
1297 /* Called from thread context */
1298 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
1299     playback_stream *s;
1300
1301     pa_sink_input_assert_ref(i);
1302     s = PLAYBACK_STREAM(i->userdata);
1303     playback_stream_assert_ref(s);
1304     pa_assert(chunk);
1305
1306 /*     pa_log("%s, pop(): %lu", pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME), (unsigned long) pa_memblockq_get_length(s->memblockq)); */
1307
1308     if (pa_memblockq_is_readable(s->memblockq))
1309         s->is_underrun = FALSE;
1310     else {
1311 /*         pa_log("%s, UNDERRUN: %lu", pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME), (unsigned long) pa_memblockq_get_length(s->memblockq)); */
1312
1313         if (s->drain_request && pa_sink_input_safe_to_remove(i)) {
1314             s->drain_request = FALSE;
1315             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);
1316         } else if (!s->is_underrun)
1317             pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_UNDERFLOW, NULL, 0, NULL, NULL);
1318
1319         s->is_underrun = TRUE;
1320
1321         request_bytes(s);
1322     }
1323
1324     /* This call will not fail with prebuf=0, hence we check for
1325        underrun explicitly above */
1326     if (pa_memblockq_peek(s->memblockq, chunk) < 0)
1327         return -1;
1328
1329     chunk->length = PA_MIN(nbytes, chunk->length);
1330
1331     if (i->thread_info.underrun_for > 0)
1332         pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PLAYBACK_STREAM_MESSAGE_STARTED, NULL, 0, NULL, NULL);
1333
1334     pa_memblockq_drop(s->memblockq, chunk->length);
1335     request_bytes(s);
1336
1337     return 0;
1338 }
1339
1340 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
1341     playback_stream *s;
1342
1343     pa_sink_input_assert_ref(i);
1344     s = PLAYBACK_STREAM(i->userdata);
1345     playback_stream_assert_ref(s);
1346
1347     /* If we are in an underrun, then we don't rewind */
1348     if (i->thread_info.underrun_for > 0)
1349         return;
1350
1351     pa_memblockq_rewind(s->memblockq, nbytes);
1352 }
1353
1354 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
1355     playback_stream *s;
1356
1357     pa_sink_input_assert_ref(i);
1358     s = PLAYBACK_STREAM(i->userdata);
1359     playback_stream_assert_ref(s);
1360
1361     pa_memblockq_set_maxrewind(s->memblockq, nbytes);
1362 }
1363
1364 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
1365     playback_stream *s;
1366     size_t tlength;
1367
1368     pa_sink_input_assert_ref(i);
1369     s = PLAYBACK_STREAM(i->userdata);
1370     playback_stream_assert_ref(s);
1371
1372     tlength = nbytes+2*pa_memblockq_get_minreq(s->memblockq);
1373
1374     if (pa_memblockq_get_tlength(s->memblockq) < tlength)
1375         pa_memblockq_set_tlength(s->memblockq, tlength);
1376 }
1377
1378 /* Called from main context */
1379 static void sink_input_kill_cb(pa_sink_input *i) {
1380     playback_stream *s;
1381
1382     pa_sink_input_assert_ref(i);
1383     s = PLAYBACK_STREAM(i->userdata);
1384     playback_stream_assert_ref(s);
1385
1386     send_playback_stream_killed(s);
1387     playback_stream_unlink(s);
1388 }
1389
1390 /* Called from main context */
1391 static void sink_input_suspend_cb(pa_sink_input *i, pa_bool_t suspend) {
1392     playback_stream *s;
1393     pa_tagstruct *t;
1394
1395     pa_sink_input_assert_ref(i);
1396     s = PLAYBACK_STREAM(i->userdata);
1397     playback_stream_assert_ref(s);
1398
1399     if (s->connection->version < 12)
1400       return;
1401
1402     t = pa_tagstruct_new(NULL, 0);
1403     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_SUSPENDED);
1404     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1405     pa_tagstruct_putu32(t, s->index);
1406     pa_tagstruct_put_boolean(t, suspend);
1407     pa_pstream_send_tagstruct(s->connection->pstream, t);
1408 }
1409
1410 /* Called from main context */
1411 static void sink_input_moved_cb(pa_sink_input *i) {
1412     playback_stream *s;
1413     pa_tagstruct *t;
1414     uint32_t maxlength, tlength, prebuf, minreq;
1415
1416     pa_sink_input_assert_ref(i);
1417     s = PLAYBACK_STREAM(i->userdata);
1418     playback_stream_assert_ref(s);
1419
1420     maxlength = (uint32_t) pa_memblockq_get_maxlength(s->memblockq);
1421     tlength = (uint32_t) pa_memblockq_get_tlength(s->memblockq);
1422     prebuf = (uint32_t) pa_memblockq_get_prebuf(s->memblockq);
1423     minreq = (uint32_t) pa_memblockq_get_minreq(s->memblockq);
1424
1425     fix_playback_buffer_attr_pre(s, TRUE, &maxlength, &tlength, &prebuf, &minreq);
1426     pa_memblockq_set_maxlength(s->memblockq, maxlength);
1427     pa_memblockq_set_tlength(s->memblockq, tlength);
1428     pa_memblockq_set_prebuf(s->memblockq, prebuf);
1429     pa_memblockq_set_minreq(s->memblockq, minreq);
1430     fix_playback_buffer_attr_post(s, &maxlength, &tlength, &prebuf, &minreq);
1431
1432     if (s->connection->version < 12)
1433       return;
1434
1435     t = pa_tagstruct_new(NULL, 0);
1436     pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_MOVED);
1437     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1438     pa_tagstruct_putu32(t, s->index);
1439     pa_tagstruct_putu32(t, i->sink->index);
1440     pa_tagstruct_puts(t, i->sink->name);
1441     pa_tagstruct_put_boolean(t, pa_sink_get_state(i->sink) == PA_SINK_SUSPENDED);
1442
1443     if (s->connection->version >= 13) {
1444         pa_tagstruct_putu32(t, maxlength);
1445         pa_tagstruct_putu32(t, tlength);
1446         pa_tagstruct_putu32(t, prebuf);
1447         pa_tagstruct_putu32(t, minreq);
1448         pa_tagstruct_put_usec(t, s->sink_latency);
1449     }
1450
1451     pa_pstream_send_tagstruct(s->connection->pstream, t);
1452 }
1453
1454 /*** source_output callbacks ***/
1455
1456 /* Called from thread context */
1457 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
1458     record_stream *s;
1459
1460     pa_source_output_assert_ref(o);
1461     s = RECORD_STREAM(o->userdata);
1462     record_stream_assert_ref(s);
1463     pa_assert(chunk);
1464
1465     pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), RECORD_STREAM_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
1466 }
1467
1468 static void source_output_kill_cb(pa_source_output *o) {
1469     record_stream *s;
1470
1471     pa_source_output_assert_ref(o);
1472     s = RECORD_STREAM(o->userdata);
1473     record_stream_assert_ref(s);
1474
1475     send_record_stream_killed(s);
1476     record_stream_unlink(s);
1477 }
1478
1479 static pa_usec_t source_output_get_latency_cb(pa_source_output *o) {
1480     record_stream *s;
1481
1482     pa_source_output_assert_ref(o);
1483     s = RECORD_STREAM(o->userdata);
1484     record_stream_assert_ref(s);
1485
1486     /*pa_log("get_latency: %u", pa_memblockq_get_length(s->memblockq));*/
1487
1488     return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &o->sample_spec);
1489 }
1490
1491 /* Called from main context */
1492 static void source_output_suspend_cb(pa_source_output *o, pa_bool_t suspend) {
1493     record_stream *s;
1494     pa_tagstruct *t;
1495
1496     pa_source_output_assert_ref(o);
1497     s = RECORD_STREAM(o->userdata);
1498     record_stream_assert_ref(s);
1499
1500     if (s->connection->version < 12)
1501       return;
1502
1503     t = pa_tagstruct_new(NULL, 0);
1504     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_SUSPENDED);
1505     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1506     pa_tagstruct_putu32(t, s->index);
1507     pa_tagstruct_put_boolean(t, suspend);
1508     pa_pstream_send_tagstruct(s->connection->pstream, t);
1509 }
1510
1511 /* Called from main context */
1512 static void source_output_moved_cb(pa_source_output *o) {
1513     record_stream *s;
1514     pa_tagstruct *t;
1515     uint32_t maxlength, fragsize;
1516
1517     pa_source_output_assert_ref(o);
1518     s = RECORD_STREAM(o->userdata);
1519     record_stream_assert_ref(s);
1520
1521     fragsize = (uint32_t) s->fragment_size;
1522     maxlength = (uint32_t) pa_memblockq_get_length(s->memblockq);
1523
1524     fix_record_buffer_attr_pre(s, TRUE, &maxlength, &fragsize);
1525     pa_memblockq_set_maxlength(s->memblockq, maxlength);
1526     fix_record_buffer_attr_post(s, &maxlength, &fragsize);
1527
1528     if (s->connection->version < 12)
1529       return;
1530
1531     t = pa_tagstruct_new(NULL, 0);
1532     pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_MOVED);
1533     pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
1534     pa_tagstruct_putu32(t, s->index);
1535     pa_tagstruct_putu32(t, o->source->index);
1536     pa_tagstruct_puts(t, o->source->name);
1537     pa_tagstruct_put_boolean(t, pa_source_get_state(o->source) == PA_SOURCE_SUSPENDED);
1538
1539     if (s->connection->version >= 13) {
1540         pa_tagstruct_putu32(t, maxlength);
1541         pa_tagstruct_putu32(t, fragsize);
1542         pa_tagstruct_put_usec(t, s->source_latency);
1543     }
1544
1545     pa_pstream_send_tagstruct(s->connection->pstream, t);
1546 }
1547
1548 /*** pdispatch callbacks ***/
1549
1550 static void protocol_error(connection *c) {
1551     pa_log("protocol error, kicking client");
1552     connection_unlink(c);
1553 }
1554
1555 #define CHECK_VALIDITY(pstream, expression, tag, error) do { \
1556 if (!(expression)) { \
1557     pa_pstream_send_error((pstream), (tag), (error)); \
1558     return; \
1559 } \
1560 } while(0);
1561
1562 static pa_tagstruct *reply_new(uint32_t tag) {
1563     pa_tagstruct *reply;
1564
1565     reply = pa_tagstruct_new(NULL, 0);
1566     pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
1567     pa_tagstruct_putu32(reply, tag);
1568     return reply;
1569 }
1570
1571 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) {
1572     connection *c = CONNECTION(userdata);
1573     playback_stream *s;
1574     uint32_t maxlength, tlength, prebuf, minreq, sink_index, syncid, missing;
1575     const char *name = NULL, *sink_name;
1576     pa_sample_spec ss;
1577     pa_channel_map map;
1578     pa_tagstruct *reply;
1579     pa_sink *sink = NULL;
1580     pa_cvolume volume;
1581     pa_bool_t
1582         corked = FALSE,
1583         no_remap = FALSE,
1584         no_remix = FALSE,
1585         fix_format = FALSE,
1586         fix_rate = FALSE,
1587         fix_channels = FALSE,
1588         no_move = FALSE,
1589         variable_rate = FALSE,
1590         muted = FALSE,
1591         adjust_latency = FALSE;
1592
1593     pa_sink_input_flags_t flags = 0;
1594     pa_proplist *p;
1595
1596     connection_assert_ref(c);
1597     pa_assert(t);
1598
1599     if ((c->version < 13 && (pa_tagstruct_gets(t, &name) < 0 || !name)) ||
1600         pa_tagstruct_get(
1601                 t,
1602                 PA_TAG_SAMPLE_SPEC, &ss,
1603                 PA_TAG_CHANNEL_MAP, &map,
1604                 PA_TAG_U32, &sink_index,
1605                 PA_TAG_STRING, &sink_name,
1606                 PA_TAG_U32, &maxlength,
1607                 PA_TAG_BOOLEAN, &corked,
1608                 PA_TAG_U32, &tlength,
1609                 PA_TAG_U32, &prebuf,
1610                 PA_TAG_U32, &minreq,
1611                 PA_TAG_U32, &syncid,
1612                 PA_TAG_CVOLUME, &volume,
1613                 PA_TAG_INVALID) < 0) {
1614
1615         protocol_error(c);
1616         return;
1617     }
1618
1619     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1620     CHECK_VALIDITY(c->pstream, sink_index != PA_INVALID_INDEX || !sink_name || (*sink_name && pa_utf8_valid(sink_name)), tag, PA_ERR_INVALID);
1621     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
1622     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
1623     CHECK_VALIDITY(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID);
1624     CHECK_VALIDITY(c->pstream, map.channels == ss.channels && volume.channels == ss.channels, tag, PA_ERR_INVALID);
1625
1626     p = pa_proplist_new();
1627
1628     if (name)
1629         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
1630
1631     if (c->version >= 12)  {
1632         /* Since 0.9.8 the user can ask for a couple of additional flags */
1633
1634         if (pa_tagstruct_get_boolean(t, &no_remap) < 0 ||
1635             pa_tagstruct_get_boolean(t, &no_remix) < 0 ||
1636             pa_tagstruct_get_boolean(t, &fix_format) < 0 ||
1637             pa_tagstruct_get_boolean(t, &fix_rate) < 0 ||
1638             pa_tagstruct_get_boolean(t, &fix_channels) < 0 ||
1639             pa_tagstruct_get_boolean(t, &no_move) < 0 ||
1640             pa_tagstruct_get_boolean(t, &variable_rate) < 0) {
1641
1642             protocol_error(c);
1643             pa_proplist_free(p);
1644             return;
1645         }
1646     }
1647
1648     if (c->version >= 13) {
1649
1650         if (pa_tagstruct_get_boolean(t, &muted) < 0 ||
1651             pa_tagstruct_get_boolean(t, &adjust_latency) < 0 ||
1652             pa_tagstruct_get_proplist(t, p) < 0) {
1653             protocol_error(c);
1654             pa_proplist_free(p);
1655             return;
1656         }
1657     }
1658
1659     if (!pa_tagstruct_eof(t)) {
1660         protocol_error(c);
1661         pa_proplist_free(p);
1662         return;
1663     }
1664
1665     if (sink_index != PA_INVALID_INDEX) {
1666
1667         if (!(sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index))) {
1668             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1669             pa_proplist_free(p);
1670             return;
1671         }
1672
1673     } else if (sink_name) {
1674
1675         if (!(sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK, 1))) {
1676             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1677             pa_proplist_free(p);
1678             return;
1679         }
1680     }
1681
1682     flags =
1683         (corked ?  PA_SINK_INPUT_START_CORKED : 0) |
1684         (no_remap ?  PA_SINK_INPUT_NO_REMAP : 0) |
1685         (no_remix ?  PA_SINK_INPUT_NO_REMIX : 0) |
1686         (fix_format ?  PA_SINK_INPUT_FIX_FORMAT : 0) |
1687         (fix_rate ?  PA_SINK_INPUT_FIX_RATE : 0) |
1688         (fix_channels ?  PA_SINK_INPUT_FIX_CHANNELS : 0) |
1689         (no_move ?  PA_SINK_INPUT_DONT_MOVE : 0) |
1690         (variable_rate ?  PA_SINK_INPUT_VARIABLE_RATE : 0);
1691
1692     s = playback_stream_new(c, sink, &ss, &map, &maxlength, &tlength, &prebuf, &minreq, &volume, muted, syncid, &missing, flags, p, adjust_latency);
1693     pa_proplist_free(p);
1694
1695     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
1696
1697     reply = reply_new(tag);
1698     pa_tagstruct_putu32(reply, s->index);
1699     pa_assert(s->sink_input);
1700     pa_tagstruct_putu32(reply, s->sink_input->index);
1701     pa_tagstruct_putu32(reply, missing);
1702
1703 /*     pa_log("initial request is %u", missing); */
1704
1705     if (c->version >= 9) {
1706         /* Since 0.9.0 we support sending the buffer metrics back to the client */
1707
1708         pa_tagstruct_putu32(reply, (uint32_t) maxlength);
1709         pa_tagstruct_putu32(reply, (uint32_t) tlength);
1710         pa_tagstruct_putu32(reply, (uint32_t) prebuf);
1711         pa_tagstruct_putu32(reply, (uint32_t) minreq);
1712     }
1713
1714     if (c->version >= 12) {
1715         /* Since 0.9.8 we support sending the chosen sample
1716          * spec/channel map/device/suspend status back to the
1717          * client */
1718
1719         pa_tagstruct_put_sample_spec(reply, &ss);
1720         pa_tagstruct_put_channel_map(reply, &map);
1721
1722         pa_tagstruct_putu32(reply, s->sink_input->sink->index);
1723         pa_tagstruct_puts(reply, s->sink_input->sink->name);
1724
1725         pa_tagstruct_put_boolean(reply, pa_sink_get_state(s->sink_input->sink) == PA_SINK_SUSPENDED);
1726     }
1727
1728     if (c->version >= 13)
1729         pa_tagstruct_put_usec(reply, s->sink_latency);
1730
1731     pa_pstream_send_tagstruct(c->pstream, reply);
1732 }
1733
1734 static void command_delete_stream(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1735     connection *c = CONNECTION(userdata);
1736     uint32_t channel;
1737
1738     connection_assert_ref(c);
1739     pa_assert(t);
1740
1741     if (pa_tagstruct_getu32(t, &channel) < 0 ||
1742         !pa_tagstruct_eof(t)) {
1743         protocol_error(c);
1744         return;
1745     }
1746
1747     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1748
1749     switch (command) {
1750
1751         case PA_COMMAND_DELETE_PLAYBACK_STREAM: {
1752             playback_stream *s;
1753             if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || !playback_stream_isinstance(s)) {
1754                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
1755                 return;
1756             }
1757
1758             playback_stream_unlink(s);
1759             break;
1760         }
1761
1762         case PA_COMMAND_DELETE_RECORD_STREAM: {
1763             record_stream *s;
1764             if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
1765                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
1766                 return;
1767             }
1768
1769             record_stream_unlink(s);
1770             break;
1771         }
1772
1773         case PA_COMMAND_DELETE_UPLOAD_STREAM: {
1774             upload_stream *s;
1775
1776             if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || !upload_stream_isinstance(s)) {
1777                 pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
1778                 return;
1779             }
1780
1781             upload_stream_unlink(s);
1782             break;
1783         }
1784
1785         default:
1786             pa_assert_not_reached();
1787     }
1788
1789     pa_pstream_send_simple_ack(c->pstream, tag);
1790 }
1791
1792 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) {
1793     connection *c = CONNECTION(userdata);
1794     record_stream *s;
1795     uint32_t maxlength, fragment_size;
1796     uint32_t source_index;
1797     const char *name = NULL, *source_name;
1798     pa_sample_spec ss;
1799     pa_channel_map map;
1800     pa_tagstruct *reply;
1801     pa_source *source = NULL;
1802     pa_bool_t
1803         corked = FALSE,
1804         no_remap = FALSE,
1805         no_remix = FALSE,
1806         fix_format = FALSE,
1807         fix_rate = FALSE,
1808         fix_channels = FALSE,
1809         no_move = FALSE,
1810         variable_rate = FALSE,
1811         adjust_latency = FALSE,
1812         peak_detect = FALSE;
1813     pa_source_output_flags_t flags = 0;
1814     pa_proplist *p;
1815     uint32_t direct_on_input_idx = PA_INVALID_INDEX;
1816     pa_sink_input *direct_on_input = NULL;
1817
1818     connection_assert_ref(c);
1819     pa_assert(t);
1820
1821     if ((c->version < 13 && (pa_tagstruct_gets(t, &name) < 0 || !name)) ||
1822         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
1823         pa_tagstruct_get_channel_map(t, &map) < 0 ||
1824         pa_tagstruct_getu32(t, &source_index) < 0 ||
1825         pa_tagstruct_gets(t, &source_name) < 0 ||
1826         pa_tagstruct_getu32(t, &maxlength) < 0 ||
1827         pa_tagstruct_get_boolean(t, &corked) < 0 ||
1828         pa_tagstruct_getu32(t, &fragment_size) < 0) {
1829         protocol_error(c);
1830         return;
1831     }
1832
1833     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1834     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
1835     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
1836     CHECK_VALIDITY(c->pstream, source_index != PA_INVALID_INDEX || !source_name || (*source_name && pa_utf8_valid(source_name)), tag, PA_ERR_INVALID);
1837     CHECK_VALIDITY(c->pstream, map.channels == ss.channels, tag, PA_ERR_INVALID);
1838
1839     p = pa_proplist_new();
1840
1841     if (name)
1842         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
1843
1844     if (c->version >= 12)  {
1845         /* Since 0.9.8 the user can ask for a couple of additional flags */
1846
1847         if (pa_tagstruct_get_boolean(t, &no_remap) < 0 ||
1848             pa_tagstruct_get_boolean(t, &no_remix) < 0 ||
1849             pa_tagstruct_get_boolean(t, &fix_format) < 0 ||
1850             pa_tagstruct_get_boolean(t, &fix_rate) < 0 ||
1851             pa_tagstruct_get_boolean(t, &fix_channels) < 0 ||
1852             pa_tagstruct_get_boolean(t, &no_move) < 0 ||
1853             pa_tagstruct_get_boolean(t, &variable_rate) < 0) {
1854
1855             protocol_error(c);
1856             pa_proplist_free(p);
1857             return;
1858         }
1859     }
1860
1861     if (c->version >= 13) {
1862
1863         if (pa_tagstruct_get_boolean(t, &peak_detect) < 0 ||
1864             pa_tagstruct_get_boolean(t, &adjust_latency) < 0 ||
1865             pa_tagstruct_get_proplist(t, p) < 0 ||
1866             pa_tagstruct_getu32(t, &direct_on_input_idx) < 0) {
1867             protocol_error(c);
1868             pa_proplist_free(p);
1869             return;
1870         }
1871     }
1872
1873     if (!pa_tagstruct_eof(t)) {
1874         protocol_error(c);
1875         pa_proplist_free(p);
1876         return;
1877     }
1878
1879     if (source_index != PA_INVALID_INDEX) {
1880
1881         if (!(source = pa_idxset_get_by_index(c->protocol->core->sources, source_index))) {
1882             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1883             pa_proplist_free(p);
1884             return;
1885         }
1886
1887     } else if (source_name) {
1888
1889         if (!(source = pa_namereg_get(c->protocol->core, source_name, PA_NAMEREG_SOURCE, 1))) {
1890             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1891             pa_proplist_free(p);
1892             return;
1893         }
1894     }
1895
1896     if (direct_on_input_idx != PA_INVALID_INDEX) {
1897
1898         if (!(direct_on_input = pa_idxset_get_by_index(c->protocol->core->sink_inputs, direct_on_input_idx))) {
1899             pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
1900             pa_proplist_free(p);
1901             return;
1902         }
1903     }
1904
1905     flags =
1906         (corked ?  PA_SOURCE_OUTPUT_START_CORKED : 0) |
1907         (no_remap ?  PA_SOURCE_OUTPUT_NO_REMAP : 0) |
1908         (no_remix ?  PA_SOURCE_OUTPUT_NO_REMIX : 0) |
1909         (fix_format ?  PA_SOURCE_OUTPUT_FIX_FORMAT : 0) |
1910         (fix_rate ?  PA_SOURCE_OUTPUT_FIX_RATE : 0) |
1911         (fix_channels ?  PA_SOURCE_OUTPUT_FIX_CHANNELS : 0) |
1912         (no_move ?  PA_SOURCE_OUTPUT_DONT_MOVE : 0) |
1913         (variable_rate ?  PA_SOURCE_OUTPUT_VARIABLE_RATE : 0);
1914
1915     s = record_stream_new(c, source, &ss, &map, peak_detect, &maxlength, &fragment_size, flags, p, adjust_latency, direct_on_input);
1916     pa_proplist_free(p);
1917
1918     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
1919
1920     reply = reply_new(tag);
1921     pa_tagstruct_putu32(reply, s->index);
1922     pa_assert(s->source_output);
1923     pa_tagstruct_putu32(reply, s->source_output->index);
1924
1925     if (c->version >= 9) {
1926         /* Since 0.9 we support sending the buffer metrics back to the client */
1927
1928         pa_tagstruct_putu32(reply, (uint32_t) maxlength);
1929         pa_tagstruct_putu32(reply, (uint32_t) fragment_size);
1930     }
1931
1932     if (c->version >= 12) {
1933         /* Since 0.9.8 we support sending the chosen sample
1934          * spec/channel map/device/suspend status back to the
1935          * client */
1936
1937         pa_tagstruct_put_sample_spec(reply, &ss);
1938         pa_tagstruct_put_channel_map(reply, &map);
1939
1940         pa_tagstruct_putu32(reply, s->source_output->source->index);
1941         pa_tagstruct_puts(reply, s->source_output->source->name);
1942
1943         pa_tagstruct_put_boolean(reply, pa_source_get_state(s->source_output->source) == PA_SOURCE_SUSPENDED);
1944     }
1945
1946     if (c->version >= 13)
1947         pa_tagstruct_put_usec(reply, s->source_latency);
1948
1949     pa_pstream_send_tagstruct(c->pstream, reply);
1950 }
1951
1952 static void command_exit(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1953     connection *c = CONNECTION(userdata);
1954
1955     connection_assert_ref(c);
1956     pa_assert(t);
1957
1958     if (!pa_tagstruct_eof(t)) {
1959         protocol_error(c);
1960         return;
1961     }
1962
1963     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
1964
1965     c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
1966     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
1967 }
1968
1969 static void command_auth(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1970     connection *c = CONNECTION(userdata);
1971     const void*cookie;
1972     pa_tagstruct *reply;
1973     pa_bool_t shm_on_remote, do_shm;
1974
1975     connection_assert_ref(c);
1976     pa_assert(t);
1977
1978     if (pa_tagstruct_getu32(t, &c->version) < 0 ||
1979         pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
1980         !pa_tagstruct_eof(t)) {
1981         protocol_error(c);
1982         return;
1983     }
1984
1985     /* Minimum supported version */
1986     if (c->version < 8) {
1987         pa_pstream_send_error(c->pstream, tag, PA_ERR_VERSION);
1988         return;
1989     }
1990
1991     /* Starting with protocol version 13 the MSB of the version tag
1992        reflects if shm is available for this connection or
1993        not. */
1994     if (c->version >= 13) {
1995         shm_on_remote = !!(c->version & 0x80000000U);
1996         c->version &= 0x7FFFFFFFU;
1997     }
1998
1999     pa_log_debug("Protocol version: remote %u, local %u", c->version, PA_PROTOCOL_VERSION);
2000
2001     pa_proplist_setf(c->client->proplist, "native-protocol.version", "%u", c->version);
2002
2003     if (!c->authorized) {
2004         pa_bool_t success = FALSE;
2005
2006 #ifdef HAVE_CREDS
2007         const pa_creds *creds;
2008
2009         if ((creds = pa_pdispatch_creds(pd))) {
2010             if (creds->uid == getuid())
2011                 success = TRUE;
2012             else if (c->options->auth_group) {
2013                 int r;
2014                 gid_t gid;
2015
2016                 if ((gid = pa_get_gid_of_group(c->options->auth_group)) == (gid_t) -1)
2017                     pa_log_warn("Failed to get GID of group '%s'", c->options->auth_group);
2018                 else if (gid == creds->gid)
2019                     success = TRUE;
2020
2021                 if (!success) {
2022                     if ((r = pa_uid_in_group(creds->uid, c->options->auth_group)) < 0)
2023                         pa_log_warn("Failed to check group membership.");
2024                     else if (r > 0)
2025                         success = TRUE;
2026                 }
2027             }
2028
2029             pa_log_info("Got credentials: uid=%lu gid=%lu success=%i",
2030                         (unsigned long) creds->uid,
2031                         (unsigned long) creds->gid,
2032                         (int) success);
2033         }
2034 #endif
2035
2036         if (!success && c->options->auth_cookie) {
2037             const uint8_t *ac;
2038
2039             if ((ac = pa_auth_cookie_read(c->options->auth_cookie, PA_NATIVE_COOKIE_LENGTH)))
2040                 if (memcmp(ac, cookie, PA_NATIVE_COOKIE_LENGTH) == 0)
2041                     success = TRUE;
2042         }
2043
2044         if (!success) {
2045             pa_log_warn("Denied access to client with invalid authorization data.");
2046             pa_pstream_send_error(c->pstream, tag, PA_ERR_ACCESS);
2047             return;
2048         }
2049
2050         c->authorized = TRUE;
2051         if (c->auth_timeout_event) {
2052             c->protocol->core->mainloop->time_free(c->auth_timeout_event);
2053             c->auth_timeout_event = NULL;
2054         }
2055     }
2056
2057     /* Enable shared memory support if possible */
2058     do_shm =
2059         pa_mempool_is_shared(c->protocol->core->mempool) &&
2060         c->is_local;
2061
2062     pa_log_debug("SHM possible: %s", pa_yes_no(do_shm));
2063
2064     if (do_shm)
2065         if (c->version < 10 || (c->version >= 13 && !shm_on_remote))
2066             do_shm = FALSE;
2067
2068     if (do_shm) {
2069         /* Only enable SHM if both sides are owned by the same
2070          * user. This is a security measure because otherwise data
2071          * private to the user might leak. */
2072
2073         const pa_creds *creds;
2074         if (!(creds = pa_pdispatch_creds(pd)) || getuid() != creds->uid)
2075             do_shm = FALSE;
2076     }
2077
2078     pa_log_debug("Negotiated SHM: %s", pa_yes_no(do_shm));
2079     pa_pstream_enable_shm(c->pstream, do_shm);
2080
2081     reply = reply_new(tag);
2082     pa_tagstruct_putu32(reply, PA_PROTOCOL_VERSION | (do_shm ? 0x80000000 : 0));
2083
2084 #ifdef HAVE_CREDS
2085 {
2086     /* SHM support is only enabled after both sides made sure they are the same user. */
2087
2088     pa_creds ucred;
2089
2090     ucred.uid = getuid();
2091     ucred.gid = getgid();
2092
2093     pa_pstream_send_tagstruct_with_creds(c->pstream, reply, &ucred);
2094 }
2095 #else
2096     pa_pstream_send_tagstruct(c->pstream, reply);
2097 #endif
2098 }
2099
2100 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) {
2101     connection *c = CONNECTION(userdata);
2102     const char *name = NULL;
2103     pa_proplist *p;
2104     pa_tagstruct *reply;
2105
2106     connection_assert_ref(c);
2107     pa_assert(t);
2108
2109     p = pa_proplist_new();
2110
2111     if ((c->version < 13 && pa_tagstruct_gets(t, &name) < 0) ||
2112         (c->version >= 13 && pa_tagstruct_get_proplist(t, p) < 0) ||
2113         !pa_tagstruct_eof(t)) {
2114
2115         protocol_error(c);
2116         pa_proplist_free(p);
2117         return;
2118     }
2119
2120     if (name)
2121         if (pa_proplist_sets(p, PA_PROP_APPLICATION_NAME, name) < 0) {
2122             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
2123             pa_proplist_free(p);
2124             return;
2125         }
2126
2127     pa_proplist_update(c->client->proplist, PA_UPDATE_REPLACE, p);
2128     pa_proplist_free(p);
2129
2130     pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_CLIENT|PA_SUBSCRIPTION_EVENT_CHANGE, c->client->index);
2131
2132     reply = reply_new(tag);
2133
2134     if (c->version >= 13)
2135         pa_tagstruct_putu32(reply, c->client->index);
2136
2137     pa_pstream_send_tagstruct(c->pstream, reply);
2138 }
2139
2140 static void command_lookup(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2141     connection *c = CONNECTION(userdata);
2142     const char *name;
2143     uint32_t idx = PA_IDXSET_INVALID;
2144
2145     connection_assert_ref(c);
2146     pa_assert(t);
2147
2148     if (pa_tagstruct_gets(t, &name) < 0 ||
2149         !pa_tagstruct_eof(t)) {
2150         protocol_error(c);
2151         return;
2152     }
2153
2154     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2155     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
2156
2157     if (command == PA_COMMAND_LOOKUP_SINK) {
2158         pa_sink *sink;
2159         if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
2160             idx = sink->index;
2161     } else {
2162         pa_source *source;
2163         pa_assert(command == PA_COMMAND_LOOKUP_SOURCE);
2164         if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
2165             idx = source->index;
2166     }
2167
2168     if (idx == PA_IDXSET_INVALID)
2169         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2170     else {
2171         pa_tagstruct *reply;
2172         reply = reply_new(tag);
2173         pa_tagstruct_putu32(reply, idx);
2174         pa_pstream_send_tagstruct(c->pstream, reply);
2175     }
2176 }
2177
2178 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) {
2179     connection *c = CONNECTION(userdata);
2180     uint32_t idx;
2181     playback_stream *s;
2182
2183     connection_assert_ref(c);
2184     pa_assert(t);
2185
2186     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2187         !pa_tagstruct_eof(t)) {
2188         protocol_error(c);
2189         return;
2190     }
2191
2192     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2193     s = pa_idxset_get_by_index(c->output_streams, idx);
2194     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2195     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2196
2197     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);
2198 }
2199
2200 static void command_stat(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2201     connection *c = CONNECTION(userdata);
2202     pa_tagstruct *reply;
2203     const pa_mempool_stat *stat;
2204
2205     connection_assert_ref(c);
2206     pa_assert(t);
2207
2208     if (!pa_tagstruct_eof(t)) {
2209         protocol_error(c);
2210         return;
2211     }
2212
2213     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2214
2215     stat = pa_mempool_get_stat(c->protocol->core->mempool);
2216
2217     reply = reply_new(tag);
2218     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->n_allocated));
2219     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->allocated_size));
2220     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->n_accumulated));
2221     pa_tagstruct_putu32(reply, (uint32_t) pa_atomic_load(&stat->accumulated_size));
2222     pa_tagstruct_putu32(reply, pa_scache_total_size(c->protocol->core));
2223     pa_pstream_send_tagstruct(c->pstream, reply);
2224 }
2225
2226 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) {
2227     connection *c = CONNECTION(userdata);
2228     pa_tagstruct *reply;
2229     playback_stream *s;
2230     struct timeval tv, now;
2231     uint32_t idx;
2232     pa_usec_t latency;
2233
2234     connection_assert_ref(c);
2235     pa_assert(t);
2236
2237     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2238         pa_tagstruct_get_timeval(t, &tv) < 0 ||
2239         !pa_tagstruct_eof(t)) {
2240         protocol_error(c);
2241         return;
2242     }
2243
2244     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2245     s = pa_idxset_get_by_index(c->output_streams, idx);
2246     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2247     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2248     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)
2249
2250     reply = reply_new(tag);
2251
2252     latency = pa_sink_get_latency(s->sink_input->sink);
2253     latency += pa_bytes_to_usec(s->render_memblockq_length, &s->sink_input->sample_spec);
2254
2255     pa_tagstruct_put_usec(reply, latency);
2256
2257     pa_tagstruct_put_usec(reply, 0);
2258     pa_tagstruct_put_boolean(reply, s->sink_input->thread_info.playing_for > 0);
2259     pa_tagstruct_put_timeval(reply, &tv);
2260     pa_tagstruct_put_timeval(reply, pa_gettimeofday(&now));
2261     pa_tagstruct_puts64(reply, s->write_index);
2262     pa_tagstruct_puts64(reply, s->read_index);
2263
2264     if (c->version >= 13) {
2265         pa_tagstruct_putu64(reply, s->sink_input->thread_info.underrun_for);
2266         pa_tagstruct_putu64(reply, s->sink_input->thread_info.playing_for);
2267     }
2268
2269     pa_pstream_send_tagstruct(c->pstream, reply);
2270 }
2271
2272 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) {
2273     connection *c = CONNECTION(userdata);
2274     pa_tagstruct *reply;
2275     record_stream *s;
2276     struct timeval tv, now;
2277     uint32_t idx;
2278
2279     connection_assert_ref(c);
2280     pa_assert(t);
2281
2282     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2283         pa_tagstruct_get_timeval(t, &tv) < 0 ||
2284         !pa_tagstruct_eof(t)) {
2285         protocol_error(c);
2286         return;
2287     }
2288
2289     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2290     s = pa_idxset_get_by_index(c->record_streams, idx);
2291     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2292
2293     reply = reply_new(tag);
2294     pa_tagstruct_put_usec(reply, s->source_output->source->monitor_of ? pa_sink_get_latency(s->source_output->source->monitor_of) : 0);
2295     pa_tagstruct_put_usec(reply, pa_source_get_latency(s->source_output->source));
2296     pa_tagstruct_put_boolean(reply, pa_source_get_state(s->source_output->source) == PA_SOURCE_RUNNING);
2297     pa_tagstruct_put_timeval(reply, &tv);
2298     pa_tagstruct_put_timeval(reply, pa_gettimeofday(&now));
2299     pa_tagstruct_puts64(reply, pa_memblockq_get_write_index(s->memblockq));
2300     pa_tagstruct_puts64(reply, pa_memblockq_get_read_index(s->memblockq));
2301     pa_pstream_send_tagstruct(c->pstream, reply);
2302 }
2303
2304 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) {
2305     connection *c = CONNECTION(userdata);
2306     upload_stream *s;
2307     uint32_t length;
2308     const char *name = NULL;
2309     pa_sample_spec ss;
2310     pa_channel_map map;
2311     pa_tagstruct *reply;
2312     pa_proplist *p;
2313
2314     connection_assert_ref(c);
2315     pa_assert(t);
2316
2317     if (pa_tagstruct_gets(t, &name) < 0 ||
2318         pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
2319         pa_tagstruct_get_channel_map(t, &map) < 0 ||
2320         pa_tagstruct_getu32(t, &length) < 0) {
2321         protocol_error(c);
2322         return;
2323     }
2324
2325     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2326     CHECK_VALIDITY(c->pstream, pa_sample_spec_valid(&ss), tag, PA_ERR_INVALID);
2327     CHECK_VALIDITY(c->pstream, pa_channel_map_valid(&map), tag, PA_ERR_INVALID);
2328     CHECK_VALIDITY(c->pstream, map.channels == ss.channels, tag, PA_ERR_INVALID);
2329     CHECK_VALIDITY(c->pstream, (length % pa_frame_size(&ss)) == 0 && length > 0, tag, PA_ERR_INVALID);
2330     CHECK_VALIDITY(c->pstream, length <= PA_SCACHE_ENTRY_SIZE_MAX, tag, PA_ERR_TOOLARGE);
2331
2332     p = pa_proplist_new();
2333
2334     if (c->version >= 13 && pa_tagstruct_get_proplist(t, p) < 0) {
2335         protocol_error(c);
2336         pa_proplist_free(p);
2337         return;
2338     }
2339
2340     if (c->version < 13)
2341         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
2342     else if (!name)
2343         if (!(name = pa_proplist_gets(p, PA_PROP_EVENT_ID)))
2344             name = pa_proplist_gets(p, PA_PROP_MEDIA_NAME);
2345
2346     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
2347
2348     s = upload_stream_new(c, &ss, &map, name, length, p);
2349     pa_proplist_free(p);
2350
2351     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_INVALID);
2352
2353     reply = reply_new(tag);
2354     pa_tagstruct_putu32(reply, s->index);
2355     pa_tagstruct_putu32(reply, length);
2356     pa_pstream_send_tagstruct(c->pstream, reply);
2357 }
2358
2359 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) {
2360     connection *c = CONNECTION(userdata);
2361     uint32_t channel;
2362     upload_stream *s;
2363     uint32_t idx;
2364
2365     connection_assert_ref(c);
2366     pa_assert(t);
2367
2368     if (pa_tagstruct_getu32(t, &channel) < 0 ||
2369         !pa_tagstruct_eof(t)) {
2370         protocol_error(c);
2371         return;
2372     }
2373
2374     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2375
2376     s = pa_idxset_get_by_index(c->output_streams, channel);
2377     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
2378     CHECK_VALIDITY(c->pstream, upload_stream_isinstance(s), tag, PA_ERR_NOENTITY);
2379
2380     if (pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->channel_map, &s->memchunk, s->proplist, &idx) < 0)
2381         pa_pstream_send_error(c->pstream, tag, PA_ERR_INTERNAL);
2382     else
2383         pa_pstream_send_simple_ack(c->pstream, tag);
2384
2385     upload_stream_unlink(s);
2386 }
2387
2388 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) {
2389     connection *c = CONNECTION(userdata);
2390     uint32_t sink_index;
2391     pa_volume_t volume;
2392     pa_sink *sink;
2393     const char *name, *sink_name;
2394     uint32_t idx;
2395     pa_proplist *p;
2396     pa_tagstruct *reply;
2397
2398     connection_assert_ref(c);
2399     pa_assert(t);
2400
2401     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2402
2403     if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
2404         pa_tagstruct_gets(t, &sink_name) < 0 ||
2405         pa_tagstruct_getu32(t, &volume) < 0 ||
2406         pa_tagstruct_gets(t, &name) < 0) {
2407         protocol_error(c);
2408         return;
2409     }
2410
2411     CHECK_VALIDITY(c->pstream, sink_index != PA_INVALID_INDEX || !sink_name || (*sink_name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2412     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
2413
2414     if (sink_index != PA_INVALID_INDEX)
2415         sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
2416     else
2417         sink = pa_namereg_get(c->protocol->core, sink_name, PA_NAMEREG_SINK, 1);
2418
2419     CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
2420
2421     p = pa_proplist_new();
2422
2423     if ((c->version >= 13 && pa_tagstruct_get_proplist(t, p) < 0) ||
2424         !pa_tagstruct_eof(t)) {
2425         protocol_error(c);
2426         pa_proplist_free(p);
2427         return;
2428     }
2429
2430     if (pa_scache_play_item(c->protocol->core, name, sink, volume, p, &idx) < 0) {
2431         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2432         pa_proplist_free(p);
2433         return;
2434     }
2435
2436     pa_proplist_free(p);
2437
2438     reply = reply_new(tag);
2439
2440     if (c->version >= 13)
2441         pa_tagstruct_putu32(reply, idx);
2442
2443     pa_pstream_send_tagstruct(c->pstream, reply);
2444 }
2445
2446 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) {
2447     connection *c = CONNECTION(userdata);
2448     const char *name;
2449
2450     connection_assert_ref(c);
2451     pa_assert(t);
2452
2453     if (pa_tagstruct_gets(t, &name) < 0 ||
2454         !pa_tagstruct_eof(t)) {
2455         protocol_error(c);
2456         return;
2457     }
2458
2459     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2460     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
2461
2462     if (pa_scache_remove_item(c->protocol->core, name) < 0) {
2463         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2464         return;
2465     }
2466
2467     pa_pstream_send_simple_ack(c->pstream, tag);
2468 }
2469
2470 static void fixup_sample_spec(connection *c, pa_sample_spec *fixed, const pa_sample_spec *original) {
2471     pa_assert(c);
2472     pa_assert(fixed);
2473     pa_assert(original);
2474
2475     *fixed = *original;
2476
2477     if (c->version < 12) {
2478         /* Before protocol version 12 we didn't support S32 samples,
2479          * so we need to lie about this to the client */
2480
2481         if (fixed->format == PA_SAMPLE_S32LE)
2482             fixed->format = PA_SAMPLE_FLOAT32LE;
2483         if (fixed->format == PA_SAMPLE_S32BE)
2484             fixed->format = PA_SAMPLE_FLOAT32BE;
2485     }
2486 }
2487
2488 static void sink_fill_tagstruct(connection *c, pa_tagstruct *t, pa_sink *sink) {
2489     pa_sample_spec fixed_ss;
2490
2491     pa_assert(t);
2492     pa_sink_assert_ref(sink);
2493
2494     fixup_sample_spec(c, &fixed_ss, &sink->sample_spec);
2495
2496     pa_tagstruct_put(
2497         t,
2498         PA_TAG_U32, sink->index,
2499         PA_TAG_STRING, sink->name,
2500         PA_TAG_STRING, pa_strnull(pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_DESCRIPTION)),
2501         PA_TAG_SAMPLE_SPEC, &fixed_ss,
2502         PA_TAG_CHANNEL_MAP, &sink->channel_map,
2503         PA_TAG_U32, sink->module ? sink->module->index : PA_INVALID_INDEX,
2504         PA_TAG_CVOLUME, pa_sink_get_volume(sink),
2505         PA_TAG_BOOLEAN, pa_sink_get_mute(sink),
2506         PA_TAG_U32, sink->monitor_source ? sink->monitor_source->index : PA_INVALID_INDEX,
2507         PA_TAG_STRING, sink->monitor_source ? sink->monitor_source->name : NULL,
2508         PA_TAG_USEC, pa_sink_get_latency(sink),
2509         PA_TAG_STRING, sink->driver,
2510         PA_TAG_U32, sink->flags,
2511         PA_TAG_INVALID);
2512
2513     if (c->version >= 13) {
2514         pa_tagstruct_put_proplist(t, sink->proplist);
2515         pa_tagstruct_put_usec(t, pa_sink_get_requested_latency(sink));
2516     }
2517 }
2518
2519 static void source_fill_tagstruct(connection *c, pa_tagstruct *t, pa_source *source) {
2520     pa_sample_spec fixed_ss;
2521
2522     pa_assert(t);
2523     pa_source_assert_ref(source);
2524
2525     fixup_sample_spec(c, &fixed_ss, &source->sample_spec);
2526
2527     pa_tagstruct_put(
2528         t,
2529         PA_TAG_U32, source->index,
2530         PA_TAG_STRING, source->name,
2531         PA_TAG_STRING, pa_strnull(pa_proplist_gets(source->proplist, PA_PROP_DEVICE_DESCRIPTION)),
2532         PA_TAG_SAMPLE_SPEC, &fixed_ss,
2533         PA_TAG_CHANNEL_MAP, &source->channel_map,
2534         PA_TAG_U32, source->module ? source->module->index : PA_INVALID_INDEX,
2535         PA_TAG_CVOLUME, pa_source_get_volume(source),
2536         PA_TAG_BOOLEAN, pa_source_get_mute(source),
2537         PA_TAG_U32, source->monitor_of ? source->monitor_of->index : PA_INVALID_INDEX,
2538         PA_TAG_STRING, source->monitor_of ? source->monitor_of->name : NULL,
2539         PA_TAG_USEC, pa_source_get_latency(source),
2540         PA_TAG_STRING, source->driver,
2541         PA_TAG_U32, source->flags,
2542         PA_TAG_INVALID);
2543
2544     if (c->version >= 13) {
2545         pa_tagstruct_put_proplist(t, source->proplist);
2546         pa_tagstruct_put_usec(t, pa_source_get_requested_latency(source));
2547     }
2548 }
2549
2550
2551 static void client_fill_tagstruct(connection *c, pa_tagstruct *t, pa_client *client) {
2552     pa_assert(t);
2553     pa_assert(client);
2554
2555     pa_tagstruct_putu32(t, client->index);
2556     pa_tagstruct_puts(t, pa_strnull(pa_proplist_gets(client->proplist, PA_PROP_APPLICATION_NAME)));
2557     pa_tagstruct_putu32(t, client->module ? client->module->index : PA_INVALID_INDEX);
2558     pa_tagstruct_puts(t, client->driver);
2559
2560     if (c->version >= 13)
2561         pa_tagstruct_put_proplist(t, client->proplist);
2562
2563 }
2564
2565 static void module_fill_tagstruct(pa_tagstruct *t, pa_module *module) {
2566     pa_assert(t);
2567     pa_assert(module);
2568
2569     pa_tagstruct_putu32(t, module->index);
2570     pa_tagstruct_puts(t, module->name);
2571     pa_tagstruct_puts(t, module->argument);
2572     pa_tagstruct_putu32(t, module->n_used);
2573     pa_tagstruct_put_boolean(t, module->auto_unload);
2574 }
2575
2576 static void sink_input_fill_tagstruct(connection *c, pa_tagstruct *t, pa_sink_input *s) {
2577     pa_sample_spec fixed_ss;
2578     pa_usec_t sink_latency;
2579
2580     pa_assert(t);
2581     pa_sink_input_assert_ref(s);
2582
2583     fixup_sample_spec(c, &fixed_ss, &s->sample_spec);
2584
2585     pa_tagstruct_putu32(t, s->index);
2586     pa_tagstruct_puts(t, pa_strnull(pa_proplist_gets(s->proplist, PA_PROP_MEDIA_NAME)));
2587     pa_tagstruct_putu32(t, s->module ? s->module->index : PA_INVALID_INDEX);
2588     pa_tagstruct_putu32(t, s->client ? s->client->index : PA_INVALID_INDEX);
2589     pa_tagstruct_putu32(t, s->sink->index);
2590     pa_tagstruct_put_sample_spec(t, &fixed_ss);
2591     pa_tagstruct_put_channel_map(t, &s->channel_map);
2592     pa_tagstruct_put_cvolume(t, &s->volume);
2593     pa_tagstruct_put_usec(t, pa_sink_input_get_latency(s, &sink_latency));
2594     pa_tagstruct_put_usec(t, sink_latency);
2595     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_sink_input_get_resample_method(s)));
2596     pa_tagstruct_puts(t, s->driver);
2597     if (c->version >= 11)
2598         pa_tagstruct_put_boolean(t, pa_sink_input_get_mute(s));
2599     if (c->version >= 13)
2600         pa_tagstruct_put_proplist(t, s->proplist);
2601 }
2602
2603 static void source_output_fill_tagstruct(connection *c, pa_tagstruct *t, pa_source_output *s) {
2604     pa_sample_spec fixed_ss;
2605     pa_usec_t source_latency;
2606
2607     pa_assert(t);
2608     pa_source_output_assert_ref(s);
2609
2610     fixup_sample_spec(c, &fixed_ss, &s->sample_spec);
2611
2612     pa_tagstruct_putu32(t, s->index);
2613     pa_tagstruct_puts(t, pa_strnull(pa_proplist_gets(s->proplist, PA_PROP_MEDIA_NAME)));
2614     pa_tagstruct_putu32(t, s->module ? s->module->index : PA_INVALID_INDEX);
2615     pa_tagstruct_putu32(t, s->client ? s->client->index : PA_INVALID_INDEX);
2616     pa_tagstruct_putu32(t, s->source->index);
2617     pa_tagstruct_put_sample_spec(t, &fixed_ss);
2618     pa_tagstruct_put_channel_map(t, &s->channel_map);
2619     pa_tagstruct_put_usec(t, pa_source_output_get_latency(s, &source_latency));
2620     pa_tagstruct_put_usec(t, source_latency);
2621     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_source_output_get_resample_method(s)));
2622     pa_tagstruct_puts(t, s->driver);
2623
2624     if (c->version >= 13)
2625         pa_tagstruct_put_proplist(t, s->proplist);
2626 }
2627
2628 static void scache_fill_tagstruct(connection *c, pa_tagstruct *t, pa_scache_entry *e) {
2629     pa_sample_spec fixed_ss;
2630
2631     pa_assert(t);
2632     pa_assert(e);
2633
2634     if (e->memchunk.memblock)
2635         fixup_sample_spec(c, &fixed_ss, &e->sample_spec);
2636     else
2637         memset(&fixed_ss, 0, sizeof(fixed_ss));
2638
2639     pa_tagstruct_putu32(t, e->index);
2640     pa_tagstruct_puts(t, e->name);
2641     pa_tagstruct_put_cvolume(t, &e->volume);
2642     pa_tagstruct_put_usec(t, e->memchunk.memblock ? pa_bytes_to_usec(e->memchunk.length, &e->sample_spec) : 0);
2643     pa_tagstruct_put_sample_spec(t, &fixed_ss);
2644     pa_tagstruct_put_channel_map(t, &e->channel_map);
2645     pa_tagstruct_putu32(t, e->memchunk.length);
2646     pa_tagstruct_put_boolean(t, e->lazy);
2647     pa_tagstruct_puts(t, e->filename);
2648
2649     if (c->version >= 13)
2650         pa_tagstruct_put_proplist(t, e->proplist);
2651 }
2652
2653 static void command_get_info(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2654     connection *c = CONNECTION(userdata);
2655     uint32_t idx;
2656     pa_sink *sink = NULL;
2657     pa_source *source = NULL;
2658     pa_client *client = NULL;
2659     pa_module *module = NULL;
2660     pa_sink_input *si = NULL;
2661     pa_source_output *so = NULL;
2662     pa_scache_entry *sce = NULL;
2663     const char *name;
2664     pa_tagstruct *reply;
2665
2666     connection_assert_ref(c);
2667     pa_assert(t);
2668
2669     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2670         (command != PA_COMMAND_GET_CLIENT_INFO &&
2671          command != PA_COMMAND_GET_MODULE_INFO &&
2672          command != PA_COMMAND_GET_SINK_INPUT_INFO &&
2673          command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
2674          pa_tagstruct_gets(t, &name) < 0) ||
2675         !pa_tagstruct_eof(t)) {
2676         protocol_error(c);
2677         return;
2678     }
2679
2680     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2681     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2682
2683     if (command == PA_COMMAND_GET_SINK_INFO) {
2684         if (idx != PA_INVALID_INDEX)
2685             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
2686         else
2687             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2688     } else if (command == PA_COMMAND_GET_SOURCE_INFO) {
2689         if (idx != PA_INVALID_INDEX)
2690             source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
2691         else
2692             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
2693     } else if (command == PA_COMMAND_GET_CLIENT_INFO)
2694         client = pa_idxset_get_by_index(c->protocol->core->clients, idx);
2695     else if (command == PA_COMMAND_GET_MODULE_INFO)
2696         module = pa_idxset_get_by_index(c->protocol->core->modules, idx);
2697     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
2698         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2699     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
2700         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
2701     else {
2702         pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO);
2703         if (idx != PA_INVALID_INDEX)
2704             sce = pa_idxset_get_by_index(c->protocol->core->scache, idx);
2705         else
2706             sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
2707     }
2708
2709     if (!sink && !source && !client && !module && !si && !so && !sce) {
2710         pa_pstream_send_error(c->pstream, tag, PA_ERR_NOENTITY);
2711         return;
2712     }
2713
2714     reply = reply_new(tag);
2715     if (sink)
2716         sink_fill_tagstruct(c, reply, sink);
2717     else if (source)
2718         source_fill_tagstruct(c, reply, source);
2719     else if (client)
2720         client_fill_tagstruct(c, reply, client);
2721     else if (module)
2722         module_fill_tagstruct(reply, module);
2723     else if (si)
2724         sink_input_fill_tagstruct(c, reply, si);
2725     else if (so)
2726         source_output_fill_tagstruct(c, reply, so);
2727     else
2728         scache_fill_tagstruct(c, reply, sce);
2729     pa_pstream_send_tagstruct(c->pstream, reply);
2730 }
2731
2732 static void command_get_info_list(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2733     connection *c = CONNECTION(userdata);
2734     pa_idxset *i;
2735     uint32_t idx;
2736     void *p;
2737     pa_tagstruct *reply;
2738
2739     connection_assert_ref(c);
2740     pa_assert(t);
2741
2742     if (!pa_tagstruct_eof(t)) {
2743         protocol_error(c);
2744         return;
2745     }
2746
2747     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2748
2749     reply = reply_new(tag);
2750
2751     if (command == PA_COMMAND_GET_SINK_INFO_LIST)
2752         i = c->protocol->core->sinks;
2753     else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
2754         i = c->protocol->core->sources;
2755     else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
2756         i = c->protocol->core->clients;
2757     else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
2758         i = c->protocol->core->modules;
2759     else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
2760         i = c->protocol->core->sink_inputs;
2761     else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
2762         i = c->protocol->core->source_outputs;
2763     else {
2764         pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
2765         i = c->protocol->core->scache;
2766     }
2767
2768     if (i) {
2769         for (p = pa_idxset_first(i, &idx); p; p = pa_idxset_next(i, &idx)) {
2770             if (command == PA_COMMAND_GET_SINK_INFO_LIST)
2771                 sink_fill_tagstruct(c, reply, p);
2772             else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
2773                 source_fill_tagstruct(c, reply, p);
2774             else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
2775                 client_fill_tagstruct(c, reply, p);
2776             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
2777                 module_fill_tagstruct(reply, p);
2778             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
2779                 sink_input_fill_tagstruct(c, reply, p);
2780             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
2781                 source_output_fill_tagstruct(c, reply, p);
2782             else {
2783                 pa_assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
2784                 scache_fill_tagstruct(c, reply, p);
2785             }
2786         }
2787     }
2788
2789     pa_pstream_send_tagstruct(c->pstream, reply);
2790 }
2791
2792 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) {
2793     connection *c = CONNECTION(userdata);
2794     pa_tagstruct *reply;
2795     char txt[256];
2796     const char *n;
2797     pa_sample_spec fixed_ss;
2798
2799     connection_assert_ref(c);
2800     pa_assert(t);
2801
2802     if (!pa_tagstruct_eof(t)) {
2803         protocol_error(c);
2804         return;
2805     }
2806
2807     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2808
2809     reply = reply_new(tag);
2810     pa_tagstruct_puts(reply, PACKAGE_NAME);
2811     pa_tagstruct_puts(reply, PACKAGE_VERSION);
2812     pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
2813     pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
2814
2815     fixup_sample_spec(c, &fixed_ss, &c->protocol->core->default_sample_spec);
2816     pa_tagstruct_put_sample_spec(reply, &fixed_ss);
2817
2818     n = pa_namereg_get_default_sink_name(c->protocol->core);
2819     pa_tagstruct_puts(reply, n);
2820     n = pa_namereg_get_default_source_name(c->protocol->core);
2821     pa_tagstruct_puts(reply, n);
2822
2823     pa_tagstruct_putu32(reply, c->protocol->core->cookie);
2824
2825     pa_pstream_send_tagstruct(c->pstream, reply);
2826 }
2827
2828 static void subscription_cb(pa_core *core, pa_subscription_event_type_t e, uint32_t idx, void *userdata) {
2829     pa_tagstruct *t;
2830     connection *c = CONNECTION(userdata);
2831
2832     connection_assert_ref(c);
2833
2834     t = pa_tagstruct_new(NULL, 0);
2835     pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
2836     pa_tagstruct_putu32(t, (uint32_t) -1);
2837     pa_tagstruct_putu32(t, e);
2838     pa_tagstruct_putu32(t, idx);
2839     pa_pstream_send_tagstruct(c->pstream, t);
2840 }
2841
2842 static void command_subscribe(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2843     connection *c = CONNECTION(userdata);
2844     pa_subscription_mask_t m;
2845
2846     connection_assert_ref(c);
2847     pa_assert(t);
2848
2849     if (pa_tagstruct_getu32(t, &m) < 0 ||
2850         !pa_tagstruct_eof(t)) {
2851         protocol_error(c);
2852         return;
2853     }
2854
2855     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2856     CHECK_VALIDITY(c->pstream, (m & ~PA_SUBSCRIPTION_MASK_ALL) == 0, tag, PA_ERR_INVALID);
2857
2858     if (c->subscription)
2859         pa_subscription_free(c->subscription);
2860
2861     if (m != 0) {
2862         c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
2863         pa_assert(c->subscription);
2864     } else
2865         c->subscription = NULL;
2866
2867     pa_pstream_send_simple_ack(c->pstream, tag);
2868 }
2869
2870 static void command_set_volume(
2871         PA_GCC_UNUSED pa_pdispatch *pd,
2872         uint32_t command,
2873         uint32_t tag,
2874         pa_tagstruct *t,
2875         void *userdata) {
2876
2877     connection *c = CONNECTION(userdata);
2878     uint32_t idx;
2879     pa_cvolume volume;
2880     pa_sink *sink = NULL;
2881     pa_source *source = NULL;
2882     pa_sink_input *si = NULL;
2883     const char *name = NULL;
2884
2885     connection_assert_ref(c);
2886     pa_assert(t);
2887
2888     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2889         (command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
2890         (command == PA_COMMAND_SET_SOURCE_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
2891         pa_tagstruct_get_cvolume(t, &volume) ||
2892         !pa_tagstruct_eof(t)) {
2893         protocol_error(c);
2894         return;
2895     }
2896
2897     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2898     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2899     CHECK_VALIDITY(c->pstream, pa_cvolume_valid(&volume), tag, PA_ERR_INVALID);
2900
2901     switch (command) {
2902
2903         case PA_COMMAND_SET_SINK_VOLUME:
2904             if (idx != PA_INVALID_INDEX)
2905                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
2906             else
2907                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2908             break;
2909
2910         case PA_COMMAND_SET_SOURCE_VOLUME:
2911             if (idx != PA_INVALID_INDEX)
2912                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
2913             else
2914                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
2915             break;
2916
2917         case PA_COMMAND_SET_SINK_INPUT_VOLUME:
2918             si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2919             break;
2920
2921         default:
2922             pa_assert_not_reached();
2923     }
2924
2925     CHECK_VALIDITY(c->pstream, si || sink || source, tag, PA_ERR_NOENTITY);
2926
2927     if (sink)
2928         pa_sink_set_volume(sink, &volume);
2929     else if (source)
2930         pa_source_set_volume(source, &volume);
2931     else if (si)
2932         pa_sink_input_set_volume(si, &volume);
2933
2934     pa_pstream_send_simple_ack(c->pstream, tag);
2935 }
2936
2937 static void command_set_mute(
2938         PA_GCC_UNUSED pa_pdispatch *pd,
2939         uint32_t command,
2940         uint32_t tag,
2941         pa_tagstruct *t,
2942         void *userdata) {
2943
2944     connection *c = CONNECTION(userdata);
2945     uint32_t idx;
2946     pa_bool_t mute;
2947     pa_sink *sink = NULL;
2948     pa_source *source = NULL;
2949     pa_sink_input *si = NULL;
2950     const char *name = NULL;
2951
2952     connection_assert_ref(c);
2953     pa_assert(t);
2954
2955     if (pa_tagstruct_getu32(t, &idx) < 0 ||
2956         (command == PA_COMMAND_SET_SINK_MUTE && pa_tagstruct_gets(t, &name) < 0) ||
2957         (command == PA_COMMAND_SET_SOURCE_MUTE && pa_tagstruct_gets(t, &name) < 0) ||
2958         pa_tagstruct_get_boolean(t, &mute) ||
2959         !pa_tagstruct_eof(t)) {
2960         protocol_error(c);
2961         return;
2962     }
2963
2964     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
2965     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
2966
2967     switch (command) {
2968
2969         case PA_COMMAND_SET_SINK_MUTE:
2970
2971             if (idx != PA_INVALID_INDEX)
2972                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
2973             else
2974                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
2975
2976             break;
2977
2978         case PA_COMMAND_SET_SOURCE_MUTE:
2979             if (idx != PA_INVALID_INDEX)
2980                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
2981             else
2982                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
2983
2984             break;
2985
2986         case PA_COMMAND_SET_SINK_INPUT_MUTE:
2987             si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
2988             break;
2989
2990         default:
2991             pa_assert_not_reached();
2992     }
2993
2994     CHECK_VALIDITY(c->pstream, si || sink || source, tag, PA_ERR_NOENTITY);
2995
2996     if (sink)
2997         pa_sink_set_mute(sink, mute);
2998     else if (source)
2999         pa_source_set_mute(source, mute);
3000     else if (si)
3001         pa_sink_input_set_mute(si, mute);
3002
3003     pa_pstream_send_simple_ack(c->pstream, tag);
3004 }
3005
3006 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) {
3007     connection *c = CONNECTION(userdata);
3008     uint32_t idx;
3009     pa_bool_t b;
3010     playback_stream *s;
3011
3012     connection_assert_ref(c);
3013     pa_assert(t);
3014
3015     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3016         pa_tagstruct_get_boolean(t, &b) < 0 ||
3017         !pa_tagstruct_eof(t)) {
3018         protocol_error(c);
3019         return;
3020     }
3021
3022     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3023     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
3024     s = pa_idxset_get_by_index(c->output_streams, idx);
3025     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3026     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3027
3028     pa_sink_input_cork(s->sink_input, b);
3029     pa_pstream_send_simple_ack(c->pstream, tag);
3030 }
3031
3032 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) {
3033     connection *c = CONNECTION(userdata);
3034     uint32_t idx;
3035     playback_stream *s;
3036
3037     connection_assert_ref(c);
3038     pa_assert(t);
3039
3040     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3041         !pa_tagstruct_eof(t)) {
3042         protocol_error(c);
3043         return;
3044     }
3045
3046     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3047     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
3048     s = pa_idxset_get_by_index(c->output_streams, idx);
3049     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3050     CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3051
3052     switch (command) {
3053         case PA_COMMAND_FLUSH_PLAYBACK_STREAM:
3054             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_FLUSH, NULL, 0, NULL);
3055             break;
3056
3057         case PA_COMMAND_PREBUF_PLAYBACK_STREAM:
3058             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_PREBUF_FORCE, NULL, 0, NULL);
3059             break;
3060
3061         case PA_COMMAND_TRIGGER_PLAYBACK_STREAM:
3062             pa_asyncmsgq_send(s->sink_input->sink->asyncmsgq, PA_MSGOBJECT(s->sink_input), SINK_INPUT_MESSAGE_TRIGGER, NULL, 0, NULL);
3063             break;
3064
3065         default:
3066             pa_assert_not_reached();
3067     }
3068
3069     pa_pstream_send_simple_ack(c->pstream, tag);
3070 }
3071
3072 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) {
3073     connection *c = CONNECTION(userdata);
3074     uint32_t idx;
3075     record_stream *s;
3076     pa_bool_t b;
3077
3078     connection_assert_ref(c);
3079     pa_assert(t);
3080
3081     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3082         pa_tagstruct_get_boolean(t, &b) < 0 ||
3083         !pa_tagstruct_eof(t)) {
3084         protocol_error(c);
3085         return;
3086     }
3087
3088     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3089     s = pa_idxset_get_by_index(c->record_streams, idx);
3090     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3091
3092     pa_source_output_cork(s->source_output, b);
3093     pa_memblockq_prebuf_force(s->memblockq);
3094     pa_pstream_send_simple_ack(c->pstream, tag);
3095 }
3096
3097 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) {
3098     connection *c = CONNECTION(userdata);
3099     uint32_t idx;
3100     record_stream *s;
3101
3102     connection_assert_ref(c);
3103     pa_assert(t);
3104
3105     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3106         !pa_tagstruct_eof(t)) {
3107         protocol_error(c);
3108         return;
3109     }
3110
3111     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3112     s = pa_idxset_get_by_index(c->record_streams, idx);
3113     CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3114
3115     pa_memblockq_flush_read(s->memblockq);
3116     pa_pstream_send_simple_ack(c->pstream, tag);
3117 }
3118
3119 static void command_set_stream_buffer_attr(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3120     connection *c = CONNECTION(userdata);
3121     uint32_t idx;
3122     uint32_t maxlength, tlength, prebuf, minreq, fragsize;
3123     pa_tagstruct *reply;
3124
3125     connection_assert_ref(c);
3126     pa_assert(t);
3127
3128     if (pa_tagstruct_getu32(t, &idx) < 0) {
3129         protocol_error(c);
3130         return;
3131     }
3132
3133     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3134
3135     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR) {
3136         playback_stream *s;
3137         pa_bool_t adjust_latency = FALSE;
3138
3139         s = pa_idxset_get_by_index(c->output_streams, idx);
3140         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3141         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3142
3143         if (pa_tagstruct_get(
3144                     t,
3145                     PA_TAG_U32, &maxlength,
3146                     PA_TAG_U32, &tlength,
3147                     PA_TAG_U32, &prebuf,
3148                     PA_TAG_U32, &minreq,
3149                     PA_TAG_INVALID) < 0 ||
3150             (c->version >= 13 && pa_tagstruct_get_boolean(t, &adjust_latency) < 0) ||
3151             !pa_tagstruct_eof(t)) {
3152             protocol_error(c);
3153             return;
3154         }
3155
3156         fix_playback_buffer_attr_pre(s, adjust_latency, &maxlength, &tlength, &prebuf, &minreq);
3157         pa_memblockq_set_maxlength(s->memblockq, maxlength);
3158         pa_memblockq_set_tlength(s->memblockq, tlength);
3159         pa_memblockq_set_prebuf(s->memblockq, prebuf);
3160         pa_memblockq_set_minreq(s->memblockq, minreq);
3161         fix_playback_buffer_attr_post(s, &maxlength, &tlength, &prebuf, &minreq);
3162
3163         reply = reply_new(tag);
3164         pa_tagstruct_putu32(reply, maxlength);
3165         pa_tagstruct_putu32(reply, tlength);
3166         pa_tagstruct_putu32(reply, prebuf);
3167         pa_tagstruct_putu32(reply, minreq);
3168
3169         if (c->version >= 13)
3170             pa_tagstruct_put_usec(reply, s->sink_latency);
3171
3172     } else {
3173         record_stream *s;
3174         pa_bool_t adjust_latency = FALSE;
3175         pa_assert(command == PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR);
3176
3177         s = pa_idxset_get_by_index(c->record_streams, idx);
3178         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3179
3180         if (pa_tagstruct_get(
3181                     t,
3182                     PA_TAG_U32, &maxlength,
3183                     PA_TAG_U32, &fragsize,
3184                     PA_TAG_INVALID) < 0 ||
3185             (c->version >= 13 && pa_tagstruct_get_boolean(t, &adjust_latency) < 0) ||
3186             !pa_tagstruct_eof(t)) {
3187             protocol_error(c);
3188             return;
3189         }
3190
3191         fix_record_buffer_attr_pre(s, adjust_latency, &maxlength, &fragsize);
3192         pa_memblockq_set_maxlength(s->memblockq, maxlength);
3193         fix_record_buffer_attr_post(s, &maxlength, &fragsize);
3194
3195         reply = reply_new(tag);
3196         pa_tagstruct_putu32(reply, maxlength);
3197         pa_tagstruct_putu32(reply, fragsize);
3198
3199         if (c->version >= 13)
3200             pa_tagstruct_put_usec(reply, s->source_latency);
3201     }
3202
3203     pa_pstream_send_tagstruct(c->pstream, reply);
3204 }
3205
3206 static void command_update_stream_sample_rate(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3207     connection *c = CONNECTION(userdata);
3208     uint32_t idx;
3209     uint32_t rate;
3210
3211     connection_assert_ref(c);
3212     pa_assert(t);
3213
3214     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3215         pa_tagstruct_getu32(t, &rate) < 0 ||
3216         !pa_tagstruct_eof(t)) {
3217         protocol_error(c);
3218         return;
3219     }
3220
3221     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3222     CHECK_VALIDITY(c->pstream, rate > 0 && rate <= PA_RATE_MAX, tag, PA_ERR_INVALID);
3223
3224     if (command == PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE) {
3225         playback_stream *s;
3226
3227         s = pa_idxset_get_by_index(c->output_streams, idx);
3228         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3229         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3230
3231         pa_sink_input_set_rate(s->sink_input, rate);
3232
3233     } else {
3234         record_stream *s;
3235         pa_assert(command == PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE);
3236
3237         s = pa_idxset_get_by_index(c->record_streams, idx);
3238         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3239
3240         pa_source_output_set_rate(s->source_output, rate);
3241     }
3242
3243     pa_pstream_send_simple_ack(c->pstream, tag);
3244 }
3245
3246 static void command_update_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3247     connection *c = CONNECTION(userdata);
3248     uint32_t idx;
3249     uint32_t mode;
3250     pa_proplist *p;
3251
3252     connection_assert_ref(c);
3253     pa_assert(t);
3254
3255     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3256
3257     p = pa_proplist_new();
3258
3259     if (command == PA_COMMAND_UPDATE_CLIENT_PROPLIST) {
3260
3261         if (pa_tagstruct_getu32(t, &mode) < 0 ||
3262             pa_tagstruct_get_proplist(t, p) < 0 ||
3263             !pa_tagstruct_eof(t)) {
3264             protocol_error(c);
3265             pa_proplist_free(p);
3266             return;
3267         }
3268
3269     } else {
3270
3271         if (pa_tagstruct_getu32(t, &idx) < 0 ||
3272             pa_tagstruct_getu32(t, &mode) < 0 ||
3273             pa_tagstruct_get_proplist(t, p) < 0 ||
3274             !pa_tagstruct_eof(t)) {
3275             protocol_error(c);
3276             pa_proplist_free(p);
3277             return;
3278         }
3279     }
3280
3281     CHECK_VALIDITY(c->pstream, mode == PA_UPDATE_SET || mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE, tag, PA_ERR_INVALID);
3282
3283     if (command == PA_COMMAND_UPDATE_PLAYBACK_STREAM_PROPLIST) {
3284         playback_stream *s;
3285
3286         s = pa_idxset_get_by_index(c->output_streams, idx);
3287         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3288         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3289
3290         pa_proplist_update(s->sink_input->proplist, mode, p);
3291         pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, s->sink_input->index);
3292
3293     } else if (command == PA_COMMAND_UPDATE_RECORD_STREAM_PROPLIST) {
3294         record_stream *s;
3295
3296         s = pa_idxset_get_by_index(c->record_streams, idx);
3297         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3298
3299         pa_proplist_update(s->source_output->proplist, mode, p);
3300         pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, s->source_output->index);
3301     } else {
3302         pa_assert(command == PA_COMMAND_UPDATE_CLIENT_PROPLIST);
3303
3304         pa_proplist_update(c->client->proplist, mode, p);
3305         pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_CLIENT|PA_SUBSCRIPTION_EVENT_CHANGE, c->client->index);
3306     }
3307
3308     pa_pstream_send_simple_ack(c->pstream, tag);
3309 }
3310
3311 static void command_remove_proplist(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3312     connection *c = CONNECTION(userdata);
3313     uint32_t idx;
3314     unsigned changed = 0;
3315     pa_proplist *p;
3316     pa_strlist *l = NULL;
3317
3318     connection_assert_ref(c);
3319     pa_assert(t);
3320
3321     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3322
3323     if (command != PA_COMMAND_REMOVE_CLIENT_PROPLIST) {
3324
3325         if (pa_tagstruct_getu32(t, &idx) < 0) {
3326             protocol_error(c);
3327             return;
3328         }
3329     }
3330
3331     if (command == PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST) {
3332         playback_stream *s;
3333
3334         s = pa_idxset_get_by_index(c->output_streams, idx);
3335         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3336         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3337
3338         p = s->sink_input->proplist;
3339
3340     } else if (command == PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST) {
3341         record_stream *s;
3342
3343         s = pa_idxset_get_by_index(c->record_streams, idx);
3344         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3345
3346         p = s->source_output->proplist;
3347     } else {
3348         pa_assert(command == PA_COMMAND_REMOVE_CLIENT_PROPLIST);
3349
3350         p = c->client->proplist;
3351     }
3352
3353     for (;;) {
3354         const char *k;
3355
3356         if (pa_tagstruct_gets(t, &k) < 0) {
3357             protocol_error(c);
3358             pa_strlist_free(l);
3359             return;
3360         }
3361
3362         if (!k)
3363             break;
3364
3365         l = pa_strlist_prepend(l, k);
3366     }
3367
3368     if (!pa_tagstruct_eof(t)) {
3369         protocol_error(c);
3370         pa_strlist_free(l);
3371         return;
3372     }
3373
3374     for (;;) {
3375         char *z;
3376
3377         l = pa_strlist_pop(l, &z);
3378
3379         if (!z)
3380             break;
3381
3382         changed += pa_proplist_unset(p, z) >= 0;
3383         pa_xfree(z);
3384     }
3385
3386     pa_pstream_send_simple_ack(c->pstream, tag);
3387
3388     if (changed) {
3389         if (command == PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST) {
3390             playback_stream *s;
3391
3392             s = pa_idxset_get_by_index(c->output_streams, idx);
3393             pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, s->sink_input->index);
3394
3395         } else if (command == PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST) {
3396             record_stream *s;
3397
3398             s = pa_idxset_get_by_index(c->record_streams, idx);
3399             pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, s->source_output->index);
3400
3401         } else {
3402             pa_assert(command == PA_COMMAND_REMOVE_CLIENT_PROPLIST);
3403             pa_subscription_post(c->protocol->core, PA_SUBSCRIPTION_EVENT_CLIENT|PA_SUBSCRIPTION_EVENT_CHANGE, c->client->index);
3404         }
3405     }
3406 }
3407
3408 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) {
3409     connection *c = CONNECTION(userdata);
3410     const char *s;
3411
3412     connection_assert_ref(c);
3413     pa_assert(t);
3414
3415     if (pa_tagstruct_gets(t, &s) < 0 ||
3416         !pa_tagstruct_eof(t)) {
3417         protocol_error(c);
3418         return;
3419     }
3420
3421     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3422     CHECK_VALIDITY(c->pstream, !s || (*s && pa_utf8_valid(s)), tag, PA_ERR_INVALID);
3423
3424     pa_namereg_set_default(c->protocol->core, s, command == PA_COMMAND_SET_DEFAULT_SOURCE ? PA_NAMEREG_SOURCE : PA_NAMEREG_SINK);
3425     pa_pstream_send_simple_ack(c->pstream, tag);
3426 }
3427
3428 static void command_set_stream_name(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3429     connection *c = CONNECTION(userdata);
3430     uint32_t idx;
3431     const char *name;
3432
3433     connection_assert_ref(c);
3434     pa_assert(t);
3435
3436     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3437         pa_tagstruct_gets(t, &name) < 0 ||
3438         !pa_tagstruct_eof(t)) {
3439         protocol_error(c);
3440         return;
3441     }
3442
3443     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3444     CHECK_VALIDITY(c->pstream, name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
3445
3446     if (command == PA_COMMAND_SET_PLAYBACK_STREAM_NAME) {
3447         playback_stream *s;
3448
3449         s = pa_idxset_get_by_index(c->output_streams, idx);
3450         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3451         CHECK_VALIDITY(c->pstream, playback_stream_isinstance(s), tag, PA_ERR_NOENTITY);
3452
3453         pa_sink_input_set_name(s->sink_input, name);
3454
3455     } else {
3456         record_stream *s;
3457         pa_assert(command == PA_COMMAND_SET_RECORD_STREAM_NAME);
3458
3459         s = pa_idxset_get_by_index(c->record_streams, idx);
3460         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3461
3462         pa_source_output_set_name(s->source_output, name);
3463     }
3464
3465     pa_pstream_send_simple_ack(c->pstream, tag);
3466 }
3467
3468 static void command_kill(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3469     connection *c = CONNECTION(userdata);
3470     uint32_t idx;
3471
3472     connection_assert_ref(c);
3473     pa_assert(t);
3474
3475     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3476         !pa_tagstruct_eof(t)) {
3477         protocol_error(c);
3478         return;
3479     }
3480
3481     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3482
3483     if (command == PA_COMMAND_KILL_CLIENT) {
3484         pa_client *client;
3485
3486         client = pa_idxset_get_by_index(c->protocol->core->clients, idx);
3487         CHECK_VALIDITY(c->pstream, client, tag, PA_ERR_NOENTITY);
3488
3489         connection_ref(c);
3490         pa_client_kill(client);
3491
3492     } else if (command == PA_COMMAND_KILL_SINK_INPUT) {
3493         pa_sink_input *s;
3494
3495         s = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
3496         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3497
3498         connection_ref(c);
3499         pa_sink_input_kill(s);
3500     } else {
3501         pa_source_output *s;
3502
3503         pa_assert(command == PA_COMMAND_KILL_SOURCE_OUTPUT);
3504
3505         s = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
3506         CHECK_VALIDITY(c->pstream, s, tag, PA_ERR_NOENTITY);
3507
3508         connection_ref(c);
3509         pa_source_output_kill(s);
3510     }
3511
3512     pa_pstream_send_simple_ack(c->pstream, tag);
3513     connection_unref(c);
3514 }
3515
3516 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) {
3517     connection *c = CONNECTION(userdata);
3518     pa_module *m;
3519     const char *name, *argument;
3520     pa_tagstruct *reply;
3521
3522     connection_assert_ref(c);
3523     pa_assert(t);
3524
3525     if (pa_tagstruct_gets(t, &name) < 0 ||
3526         pa_tagstruct_gets(t, &argument) < 0 ||
3527         !pa_tagstruct_eof(t)) {
3528         protocol_error(c);
3529         return;
3530     }
3531
3532     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3533     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name) && !strchr(name, '/'), tag, PA_ERR_INVALID);
3534     CHECK_VALIDITY(c->pstream, !argument || pa_utf8_valid(argument), tag, PA_ERR_INVALID);
3535
3536     if (!(m = pa_module_load(c->protocol->core, name, argument))) {
3537         pa_pstream_send_error(c->pstream, tag, PA_ERR_MODINITFAILED);
3538         return;
3539     }
3540
3541     reply = reply_new(tag);
3542     pa_tagstruct_putu32(reply, m->index);
3543     pa_pstream_send_tagstruct(c->pstream, reply);
3544 }
3545
3546 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) {
3547     connection *c = CONNECTION(userdata);
3548     uint32_t idx;
3549     pa_module *m;
3550
3551     connection_assert_ref(c);
3552     pa_assert(t);
3553
3554     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3555         !pa_tagstruct_eof(t)) {
3556         protocol_error(c);
3557         return;
3558     }
3559
3560     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3561     m = pa_idxset_get_by_index(c->protocol->core->modules, idx);
3562     CHECK_VALIDITY(c->pstream, m, tag, PA_ERR_NOENTITY);
3563
3564     pa_module_unload_request(m);
3565     pa_pstream_send_simple_ack(c->pstream, tag);
3566 }
3567
3568 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) {
3569     connection *c = CONNECTION(userdata);
3570     const char *name, *module, *argument;
3571     uint32_t type;
3572     uint32_t idx;
3573     pa_tagstruct *reply;
3574
3575     connection_assert_ref(c);
3576     pa_assert(t);
3577
3578     if (pa_tagstruct_gets(t, &name) < 0 ||
3579         pa_tagstruct_getu32(t, &type) < 0 ||
3580         pa_tagstruct_gets(t, &module) < 0 ||
3581         pa_tagstruct_gets(t, &argument) < 0 ||
3582         !pa_tagstruct_eof(t)) {
3583         protocol_error(c);
3584         return;
3585     }
3586
3587     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3588     CHECK_VALIDITY(c->pstream, name && *name && pa_utf8_valid(name), tag, PA_ERR_INVALID);
3589     CHECK_VALIDITY(c->pstream, type == 0 || type == 1, tag, PA_ERR_INVALID);
3590     CHECK_VALIDITY(c->pstream, module && *module && pa_utf8_valid(module), tag, PA_ERR_INVALID);
3591     CHECK_VALIDITY(c->pstream, !argument || pa_utf8_valid(argument), tag, PA_ERR_INVALID);
3592
3593     if (pa_autoload_add(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE, module, argument, &idx) < 0) {
3594         pa_pstream_send_error(c->pstream, tag, PA_ERR_EXIST);
3595         return;
3596     }
3597
3598     reply = reply_new(tag);
3599     pa_tagstruct_putu32(reply, idx);
3600     pa_pstream_send_tagstruct(c->pstream, reply);
3601 }
3602
3603 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) {
3604     connection *c = CONNECTION(userdata);
3605     const char *name = NULL;
3606     uint32_t type, idx = PA_IDXSET_INVALID;
3607     int r;
3608
3609     connection_assert_ref(c);
3610     pa_assert(t);
3611
3612     if ((pa_tagstruct_getu32(t, &idx) < 0 &&
3613         (pa_tagstruct_gets(t, &name) < 0 ||
3614          pa_tagstruct_getu32(t, &type) < 0)) ||
3615         !pa_tagstruct_eof(t)) {
3616         protocol_error(c);
3617         return;
3618     }
3619
3620     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3621     CHECK_VALIDITY(c->pstream, name || idx != PA_IDXSET_INVALID, tag, PA_ERR_INVALID);
3622     CHECK_VALIDITY(c->pstream, !name || (*name && pa_utf8_valid(name) && (type == 0 || type == 1)), tag, PA_ERR_INVALID);
3623
3624     if (name)
3625         r = pa_autoload_remove_by_name(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE);
3626     else
3627         r = pa_autoload_remove_by_index(c->protocol->core, idx);
3628
3629     CHECK_VALIDITY(c->pstream, r >= 0, tag, PA_ERR_NOENTITY);
3630
3631     pa_pstream_send_simple_ack(c->pstream, tag);
3632 }
3633
3634 static void autoload_fill_tagstruct(pa_tagstruct *t, const pa_autoload_entry *e) {
3635     pa_assert(t && e);
3636
3637     pa_tagstruct_putu32(t, e->index);
3638     pa_tagstruct_puts(t, e->name);
3639     pa_tagstruct_putu32(t, e->type == PA_NAMEREG_SINK ? 0 : 1);
3640     pa_tagstruct_puts(t, e->module);
3641     pa_tagstruct_puts(t, e->argument);
3642 }
3643
3644 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) {
3645     connection *c = CONNECTION(userdata);
3646     const pa_autoload_entry *a = NULL;
3647     uint32_t type, idx;
3648     const char *name;
3649     pa_tagstruct *reply;
3650
3651     connection_assert_ref(c);
3652     pa_assert(t);
3653
3654     if ((pa_tagstruct_getu32(t, &idx) < 0 &&
3655         (pa_tagstruct_gets(t, &name) < 0 ||
3656          pa_tagstruct_getu32(t, &type) < 0)) ||
3657         !pa_tagstruct_eof(t)) {
3658         protocol_error(c);
3659         return;
3660     }
3661
3662     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3663     CHECK_VALIDITY(c->pstream, name || idx != PA_IDXSET_INVALID, tag, PA_ERR_INVALID);
3664     CHECK_VALIDITY(c->pstream, !name || (*name && (type == 0 || type == 1) && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
3665
3666     if (name)
3667         a = pa_autoload_get_by_name(c->protocol->core, name, type == 0 ? PA_NAMEREG_SINK : PA_NAMEREG_SOURCE);
3668     else
3669         a = pa_autoload_get_by_index(c->protocol->core, idx);
3670
3671     CHECK_VALIDITY(c->pstream, a, tag, PA_ERR_NOENTITY);
3672
3673     reply = reply_new(tag);
3674     autoload_fill_tagstruct(reply, a);
3675     pa_pstream_send_tagstruct(c->pstream, reply);
3676 }
3677
3678 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) {
3679     connection *c = CONNECTION(userdata);
3680     pa_tagstruct *reply;
3681
3682     connection_assert_ref(c);
3683     pa_assert(t);
3684
3685     if (!pa_tagstruct_eof(t)) {
3686         protocol_error(c);
3687         return;
3688     }
3689
3690     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3691
3692     reply = reply_new(tag);
3693
3694     if (c->protocol->core->autoload_hashmap) {
3695         pa_autoload_entry *a;
3696         void *state = NULL;
3697
3698         while ((a = pa_hashmap_iterate(c->protocol->core->autoload_hashmap, &state, NULL)))
3699             autoload_fill_tagstruct(reply, a);
3700     }
3701
3702     pa_pstream_send_tagstruct(c->pstream, reply);
3703 }
3704
3705 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3706     connection *c = CONNECTION(userdata);
3707     uint32_t idx = PA_INVALID_INDEX, idx_device = PA_INVALID_INDEX;
3708     const char *name = NULL;
3709
3710     connection_assert_ref(c);
3711     pa_assert(t);
3712
3713     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3714         pa_tagstruct_getu32(t, &idx_device) < 0 ||
3715         pa_tagstruct_gets(t, &name) < 0 ||
3716         !pa_tagstruct_eof(t)) {
3717         protocol_error(c);
3718         return;
3719     }
3720
3721     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3722     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX, tag, PA_ERR_INVALID);
3723     CHECK_VALIDITY(c->pstream, idx_device != PA_INVALID_INDEX || !name || (*name && pa_utf8_valid(name)), tag, PA_ERR_INVALID);
3724
3725     if (command == PA_COMMAND_MOVE_SINK_INPUT) {
3726         pa_sink_input *si = NULL;
3727         pa_sink *sink = NULL;
3728
3729         si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, idx);
3730
3731         if (idx_device != PA_INVALID_INDEX)
3732             sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx_device);
3733         else
3734             sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
3735
3736         CHECK_VALIDITY(c->pstream, si && sink, tag, PA_ERR_NOENTITY);
3737
3738         if (pa_sink_input_move_to(si, sink) < 0) {
3739             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3740             return;
3741         }
3742     } else {
3743         pa_source_output *so = NULL;
3744         pa_source *source;
3745
3746         pa_assert(command == PA_COMMAND_MOVE_SOURCE_OUTPUT);
3747
3748         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
3749
3750         if (idx_device != PA_INVALID_INDEX)
3751             source = pa_idxset_get_by_index(c->protocol->core->sources, idx_device);
3752         else
3753             source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
3754
3755         CHECK_VALIDITY(c->pstream, so && source, tag, PA_ERR_NOENTITY);
3756
3757         if (pa_source_output_move_to(so, source) < 0) {
3758             pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3759             return;
3760         }
3761     }
3762
3763     pa_pstream_send_simple_ack(c->pstream, tag);
3764 }
3765
3766 static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
3767     connection *c = CONNECTION(userdata);
3768     uint32_t idx = PA_INVALID_INDEX;
3769     const char *name = NULL;
3770     pa_bool_t b;
3771
3772     connection_assert_ref(c);
3773     pa_assert(t);
3774
3775     if (pa_tagstruct_getu32(t, &idx) < 0 ||
3776         pa_tagstruct_gets(t, &name) < 0 ||
3777         pa_tagstruct_get_boolean(t, &b) < 0 ||
3778         !pa_tagstruct_eof(t)) {
3779         protocol_error(c);
3780         return;
3781     }
3782
3783     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
3784     CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || !*name || pa_utf8_valid(name), tag, PA_ERR_INVALID);
3785
3786     if (command == PA_COMMAND_SUSPEND_SINK) {
3787
3788         if (idx == PA_INVALID_INDEX && name && !*name) {
3789
3790             if (pa_sink_suspend_all(c->protocol->core, b) < 0) {
3791                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3792                 return;
3793             }
3794         } else {
3795             pa_sink *sink = NULL;
3796
3797             if (idx != PA_INVALID_INDEX)
3798                 sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
3799             else
3800                 sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
3801
3802             CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
3803
3804             if (pa_sink_suspend(sink, b) < 0) {
3805                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3806                 return;
3807             }
3808         }
3809     } else {
3810
3811         pa_assert(command == PA_COMMAND_SUSPEND_SOURCE);
3812
3813         if (idx == PA_INVALID_INDEX && name && !*name) {
3814
3815             if (pa_source_suspend_all(c->protocol->core, b) < 0) {
3816                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3817                 return;
3818             }
3819
3820         } else {
3821             pa_source *source;
3822
3823             if (idx != PA_INVALID_INDEX)
3824                 source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
3825             else
3826                 source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
3827
3828             CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
3829
3830             if (pa_source_suspend(source, b) < 0) {
3831                 pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
3832                 return;
3833             }
3834         }
3835     }
3836
3837     pa_pstream_send_simple_ack(c->pstream, tag);
3838 }
3839
3840 /*** pstream callbacks ***/
3841
3842 static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const pa_creds *creds, void *userdata) {
3843     connection *c = CONNECTION(userdata);
3844
3845     pa_assert(p);
3846     pa_assert(packet);
3847     connection_assert_ref(c);
3848
3849     if (pa_pdispatch_run(c->pdispatch, packet, creds, c) < 0) {
3850         pa_log("invalid packet.");
3851         connection_unlink(c);
3852     }
3853 }
3854
3855 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) {
3856     connection *c = CONNECTION(userdata);
3857     output_stream *stream;
3858
3859     pa_assert(p);
3860     pa_assert(chunk);
3861     connection_assert_ref(c);
3862
3863     if (!(stream = OUTPUT_STREAM(pa_idxset_get_by_index(c->output_streams, channel)))) {
3864         pa_log("client sent block for invalid stream.");
3865         /* Ignoring */
3866         return;
3867     }
3868
3869     if (playback_stream_isinstance(stream)) {
3870         playback_stream *ps = PLAYBACK_STREAM(stream);
3871
3872         if (seek != PA_SEEK_RELATIVE || offset != 0)
3873             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);
3874
3875         pa_asyncmsgq_post(ps->sink_input->sink->asyncmsgq, PA_MSGOBJECT(ps->sink_input), SINK_INPUT_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
3876
3877     } else {
3878         upload_stream *u = UPLOAD_STREAM(stream);
3879         size_t l;
3880
3881         if (!u->memchunk.memblock) {
3882             if (u->length == chunk->length) {
3883                 u->memchunk = *chunk;
3884                 pa_memblock_ref(u->memchunk.memblock);
3885                 u->length = 0;
3886             } else {
3887                 u->memchunk.memblock = pa_memblock_new(c->protocol->core->mempool, u->length);
3888                 u->memchunk.index = u->memchunk.length = 0;
3889             }
3890         }
3891
3892         pa_assert(u->memchunk.memblock);
3893
3894         l = u->length;
3895         if (l > chunk->length)
3896             l = chunk->length;
3897
3898
3899         if (l > 0) {
3900             void *src, *dst;
3901             dst = pa_memblock_acquire(u->memchunk.memblock);
3902             src = pa_memblock_acquire(chunk->memblock);
3903
3904             memcpy((uint8_t*) dst + u->memchunk.index + u->memchunk.length,
3905                    (uint8_t*) src+chunk->index, l);
3906
3907             pa_memblock_release(u->memchunk.memblock);
3908             pa_memblock_release(chunk->memblock);
3909
3910             u->memchunk.length += l;
3911             u->length -= l;
3912         }
3913     }
3914 }
3915
3916 static void pstream_die_callback(pa_pstream *p, void *userdata) {
3917     connection *c = CONNECTION(userdata);
3918
3919     pa_assert(p);
3920     connection_assert_ref(c);
3921
3922     connection_unlink(c);
3923     pa_log_info("connection died.");
3924 }
3925
3926 static void pstream_drain_callback(pa_pstream *p, void *userdata) {
3927     connection *c = CONNECTION(userdata);
3928
3929     pa_assert(p);
3930     connection_assert_ref(c);
3931
3932     send_memblock(c);
3933 }
3934
3935 static void pstream_revoke_callback(pa_pstream *p, uint32_t block_id, void *userdata) {
3936     pa_thread_mq *q;
3937
3938     if (!(q = pa_thread_mq_get()))
3939         pa_pstream_send_revoke(p, block_id);
3940     else
3941         pa_asyncmsgq_post(q->outq, PA_MSGOBJECT(userdata), CONNECTION_MESSAGE_REVOKE, PA_UINT_TO_PTR(block_id), 0, NULL, NULL);
3942 }
3943
3944 static void pstream_release_callback(pa_pstream *p, uint32_t block_id, void *userdata) {
3945     pa_thread_mq *q;
3946
3947     if (!(q = pa_thread_mq_get()))
3948         pa_pstream_send_release(p, block_id);
3949     else
3950         pa_asyncmsgq_post(q->outq, PA_MSGOBJECT(userdata), CONNECTION_MESSAGE_RELEASE, PA_UINT_TO_PTR(block_id), 0, NULL, NULL);
3951 }
3952
3953 /*** client callbacks ***/
3954
3955 static void client_kill_cb(pa_client *c) {
3956     pa_assert(c);
3957
3958     connection_unlink(CONNECTION(c->userdata));
3959 }
3960
3961 /*** module entry points ***/
3962
3963 static void auth_timeout(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
3964     connection *c = CONNECTION(userdata);
3965
3966     pa_assert(m);
3967     pa_assert(tv);
3968     connection_assert_ref(c);
3969     pa_assert(c->auth_timeout_event == e);
3970
3971     if (!c->authorized)
3972         connection_unlink(c);
3973 }
3974
3975 void pa_native_protocol_connect(pa_native_protocol *p, pa_iochannel *io, pa_native_options *o) {
3976     connection *c;
3977     char cname[256], pname[128];
3978
3979     pa_assert(p);
3980     pa_assert(io);
3981     pa_assert(o);
3982
3983     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
3984         pa_log_warn("Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
3985         pa_iochannel_free(io);
3986         return;
3987     }
3988
3989     c = pa_msgobject_new(connection);
3990     c->parent.parent.free = connection_free;
3991     c->parent.process_msg = connection_process_msg;
3992     c->protocol = p;
3993     c->options = pa_native_options_ref(o);
3994     c->authorized = FALSE;
3995
3996     if (o->auth_anonymous) {
3997         pa_log_info("Client authenticated anonymously.");
3998         c->authorized = TRUE;
3999     }
4000
4001     if (!c->authorized &&
4002         o->auth_ip_acl &&
4003         pa_ip_acl_check(o->auth_ip_acl, pa_iochannel_get_recv_fd(io)) > 0) {
4004
4005         pa_log_info("Client authenticated by IP ACL.");
4006         c->authorized = TRUE;
4007     }
4008
4009     if (!c->authorized) {
4010         struct timeval tv;
4011         pa_gettimeofday(&tv);
4012         tv.tv_sec += AUTH_TIMEOUT;
4013         c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
4014     } else
4015         c->auth_timeout_event = NULL;
4016
4017     c->is_local = pa_iochannel_socket_is_local(io);
4018     c->version = 8;
4019
4020     pa_iochannel_socket_peer_to_string(io, pname, sizeof(pname));
4021     pa_snprintf(cname, sizeof(cname), "Native client (%s)", pname);
4022     c->client = pa_client_new(p->core, __FILE__, cname);
4023     pa_proplist_sets(c->client->proplist, "native-protocol.peer", pname);
4024     c->client->kill = client_kill_cb;
4025     c->client->userdata = c;
4026     c->client->module = o->module;
4027
4028     c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->mempool);
4029     pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
4030     pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
4031     pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
4032     pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
4033     pa_pstream_set_revoke_callback(c->pstream, pstream_revoke_callback, c);
4034     pa_pstream_set_release_callback(c->pstream, pstream_release_callback, c);
4035
4036     c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
4037
4038     c->record_streams = pa_idxset_new(NULL, NULL);
4039     c->output_streams = pa_idxset_new(NULL, NULL);
4040
4041     c->rrobin_index = PA_IDXSET_INVALID;
4042     c->subscription = NULL;
4043
4044     pa_idxset_put(p->connections, c, NULL);
4045
4046 #ifdef HAVE_CREDS
4047     if (pa_iochannel_creds_supported(io))
4048         pa_iochannel_creds_enable(io);
4049 #endif
4050 }
4051
4052 void pa_native_protocol_disconnect(pa_native_protocol *p, pa_module *m) {
4053     connection *c;
4054     void *state = NULL;
4055
4056     pa_assert(p);
4057     pa_assert(m);
4058
4059     while ((c = pa_idxset_iterate(p->connections, &state, NULL)))
4060         if (c->options->module == m)
4061             connection_unlink(c);
4062 }
4063
4064 static pa_native_protocol* native_protocol_new(pa_core *c) {
4065     pa_native_protocol *p;
4066
4067     pa_assert(c);
4068
4069     p = pa_xnew(pa_native_protocol, 1);
4070     PA_REFCNT_INIT(p);
4071     p->core = c;
4072     p->connections = pa_idxset_new(NULL, NULL);
4073
4074     p->servers = NULL;
4075     pa_hook_init(&p->servers_changed, p);
4076
4077     pa_assert_se(pa_shared_set(c, "native-protocol", p) >= 0);
4078
4079     return p;
4080 }
4081
4082 pa_native_protocol* pa_native_protocol_get(pa_core *c) {
4083     pa_native_protocol *p;
4084
4085     if ((p = pa_shared_get(c, "native-protocol")))
4086         return pa_native_protocol_ref(p);
4087
4088     return native_protocol_new(c);
4089 }
4090
4091 pa_native_protocol* pa_native_protocol_ref(pa_native_protocol *p) {
4092     pa_assert(p);
4093     pa_assert(PA_REFCNT_VALUE(p) >= 1);
4094
4095     PA_REFCNT_INC(p);
4096
4097     return p;
4098 }
4099
4100 void pa_native_protocol_unref(pa_native_protocol *p) {
4101     connection *c;
4102     pa_assert(p);
4103     pa_assert(PA_REFCNT_VALUE(p) >= 1);
4104
4105     if (PA_REFCNT_DEC(p) > 0)
4106         return;
4107
4108     while ((c = pa_idxset_first(p->connections, NULL)))
4109         connection_unlink(c);
4110
4111     pa_idxset_free(p->connections, NULL, NULL);
4112
4113     pa_strlist_free(p->servers);
4114     pa_hook_done(&p->servers_changed);
4115
4116     pa_assert_se(pa_shared_remove(p->core, "native-protocol") >= 0);
4117
4118     pa_xfree(p);
4119 }
4120
4121 void pa_native_protocol_add_server_string(pa_native_protocol *p, const char *name) {
4122     pa_assert(p);
4123     pa_assert(PA_REFCNT_VALUE(p) >= 1);
4124     pa_assert(name);
4125
4126     p->servers = pa_strlist_prepend(p->servers, name);
4127
4128     pa_hook_fire(&p->servers_changed, p->servers);
4129 }
4130
4131 void pa_native_protocol_remove_server_string(pa_native_protocol *p, const char *name) {
4132     pa_assert(p);
4133     pa_assert(PA_REFCNT_VALUE(p) >= 1);
4134     pa_assert(name);
4135
4136     p->servers = pa_strlist_remove(p->servers, name);
4137
4138     pa_hook_fire(&p->servers_changed, p->servers);
4139 }
4140
4141 pa_hook *pa_native_protocol_servers_changed(pa_native_protocol *p) {
4142     pa_assert(p);
4143     pa_assert(PA_REFCNT_VALUE(p) >= 1);
4144
4145     return &p->servers_changed;
4146 }
4147
4148 pa_strlist *pa_native_protocol_servers(pa_native_protocol *p) {
4149     pa_assert(p);
4150     pa_assert(PA_REFCNT_VALUE(p) >= 1);
4151
4152     return p->servers;
4153 }
4154
4155 /* int pa_native_protocol_install_extension(pa_native_protocol *p, pa_module *m, pa_native_protocol_extension_cb_t cb) { */
4156 /*     pa_assert(p); */
4157 /*     pa_assert(PA_REFCNT_VALUE(p) >= 1); */
4158 /*     pa_assert(m); */
4159 /*     pa_assert(cb); */
4160
4161
4162 /* } */
4163
4164 /* void pa_native_protocol_remove_extension(pa_native_protocol *p, pa_module *m) { */
4165 /*     pa_assert(p); */
4166 /*     pa_assert(PA_REFCNT_VALUE(p) >= 1); */
4167 /*     pa_assert(m); */
4168
4169 /* } */
4170
4171 pa_native_options* pa_native_options_new(void) {
4172     pa_native_options *o;
4173
4174     o = pa_xnew0(pa_native_options, 1);
4175     PA_REFCNT_INIT(o);
4176
4177     return o;
4178 }
4179
4180 pa_native_options* pa_native_options_ref(pa_native_options *o) {
4181     pa_assert(o);
4182     pa_assert(PA_REFCNT_VALUE(o) >= 1);
4183
4184     PA_REFCNT_INC(o);
4185
4186     return o;
4187 }
4188
4189 void pa_native_options_unref(pa_native_options *o) {
4190     pa_assert(o);
4191     pa_assert(PA_REFCNT_VALUE(o) >= 1);
4192
4193     if (PA_REFCNT_DEC(o) > 0)
4194         return;
4195
4196     pa_xfree(o->auth_group);
4197
4198     if (o->auth_ip_acl)
4199         pa_ip_acl_free(o->auth_ip_acl);
4200
4201     if (o->auth_cookie)
4202         pa_auth_cookie_unref(o->auth_cookie);
4203
4204     pa_xfree(o);
4205 }
4206
4207 int pa_native_options_parse(pa_native_options *o, pa_core *c, pa_modargs *ma) {
4208     pa_bool_t enabled;
4209     const char *acl;
4210
4211     pa_assert(o);
4212     pa_assert(PA_REFCNT_VALUE(o) >= 1);
4213     pa_assert(ma);
4214
4215     if (pa_modargs_get_value_boolean(ma, "auth-anonymous", &o->auth_anonymous) < 0) {
4216         pa_log("auth-anonymous= expects a boolean argument.");
4217         return -1;
4218     }
4219
4220     enabled = TRUE;
4221     if (pa_modargs_get_value_boolean(ma, "auth-group-enabled", &enabled) < 0) {
4222         pa_log("auth-group-enabled= expects a boolean argument.");
4223         return -1;
4224     }
4225
4226     pa_xfree(o->auth_group);
4227     o->auth_group = enabled ? pa_xstrdup(pa_modargs_get_value(ma, "auth-group", pa_in_system_mode() ? PA_ACCESS_GROUP : NULL)) : NULL;
4228
4229 #ifndef HAVE_CREDS
4230     if (o->auth_group)
4231         pa_log_warn("Authentication group configured, but not available on local system. Ignoring.");
4232 #endif
4233
4234     if ((acl = pa_modargs_get_value(ma, "auth-ip-acl", NULL))) {
4235         pa_ip_acl *ipa;
4236
4237         if (!(o->auth_ip_acl = pa_ip_acl_new(acl))) {
4238             pa_log("Failed to parse IP ACL '%s'", acl);
4239             return -1;
4240         }
4241
4242         if (o->auth_ip_acl)
4243             pa_ip_acl_free(o->auth_ip_acl);
4244
4245         o->auth_ip_acl = ipa;
4246     }
4247
4248     enabled = TRUE;
4249     if (pa_modargs_get_value_boolean(ma, "auth-cookie-enabled", &enabled) < 0) {
4250         pa_log("auth-cookie-enabled= expects a boolean argument.");
4251         return -1;
4252     }
4253
4254     if (o->auth_cookie)
4255         pa_auth_cookie_unref(o->auth_cookie);
4256
4257     if (enabled) {
4258         const char *cn;
4259
4260         /* The new name for this is 'auth-cookie', for compat reasons
4261          * we check the old name too */
4262         if (!(cn = pa_modargs_get_value(ma, "auth-cookie", NULL)))
4263             if (!(cn = pa_modargs_get_value(ma, "cookie", NULL)))
4264                 cn = PA_NATIVE_COOKIE_FILE;
4265
4266         if (!(o->auth_cookie = pa_auth_cookie_get(c, cn, PA_NATIVE_COOKIE_LENGTH)))
4267             return -1;
4268
4269     } else
4270           o->auth_cookie = NULL;
4271
4272     return 0;
4273 }