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pulseaudio/polyp/protocol-native.c
Lennart Poettering 348738751c daemon auto spawn 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@173 fefdeb5f-60dc-0310-8127-8f9354f1896f
2004-09-01 21:12:27 +00:00

1566 lines
53 KiB
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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "protocol-native.h"
#include "native-common.h"
#include "packet.h"
#include "client.h"
#include "source-output.h"
#include "sink-input.h"
#include "pstream.h"
#include "tagstruct.h"
#include "pdispatch.h"
#include "pstream-util.h"
#include "authkey.h"
#include "namereg.h"
#include "scache.h"
#include "xmalloc.h"
#include "util.h"
#include "subscribe.h"
struct connection;
struct pa_protocol_native;
struct record_stream {
struct connection *connection;
uint32_t index;
struct pa_source_output *source_output;
struct pa_memblockq *memblockq;
size_t fragment_size;
};
struct playback_stream {
int type;
struct connection *connection;
uint32_t index;
struct pa_sink_input *sink_input;
struct pa_memblockq *memblockq;
size_t requested_bytes;
int drain_request;
uint32_t drain_tag;
};
struct upload_stream {
int type;
struct connection *connection;
uint32_t index;
struct pa_memchunk memchunk;
size_t length;
char *name;
struct pa_sample_spec sample_spec;
};
struct output_stream {
int type;
};
enum {
UPLOAD_STREAM,
PLAYBACK_STREAM
};
struct connection {
int authorized;
struct pa_protocol_native *protocol;
struct pa_client *client;
struct pa_pstream *pstream;
struct pa_pdispatch *pdispatch;
struct pa_idxset *record_streams, *output_streams;
uint32_t rrobin_index;
struct pa_subscription *subscription;
};
struct pa_protocol_native {
struct pa_module *module;
int public;
struct pa_core *core;
struct pa_socket_server *server;
struct pa_idxset *connections;
uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
};
static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
static void sink_input_kill_cb(struct pa_sink_input *i);
static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i);
static void request_bytes(struct playback_stream*s);
static void source_output_kill_cb(struct pa_source_output *o);
static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
[PA_COMMAND_ERROR] = { NULL },
[PA_COMMAND_TIMEOUT] = { NULL },
[PA_COMMAND_REPLY] = { NULL },
[PA_COMMAND_CREATE_PLAYBACK_STREAM] = { command_create_playback_stream },
[PA_COMMAND_DELETE_PLAYBACK_STREAM] = { command_delete_stream },
[PA_COMMAND_DRAIN_PLAYBACK_STREAM] = { command_drain_playback_stream },
[PA_COMMAND_CREATE_RECORD_STREAM] = { command_create_record_stream },
[PA_COMMAND_DELETE_RECORD_STREAM] = { command_delete_stream },
[PA_COMMAND_AUTH] = { command_auth },
[PA_COMMAND_REQUEST] = { NULL },
[PA_COMMAND_EXIT] = { command_exit },
[PA_COMMAND_SET_NAME] = { command_set_name },
[PA_COMMAND_LOOKUP_SINK] = { command_lookup },
[PA_COMMAND_LOOKUP_SOURCE] = { command_lookup },
[PA_COMMAND_STAT] = { command_stat },
[PA_COMMAND_GET_PLAYBACK_LATENCY] = { command_get_playback_latency },
[PA_COMMAND_CREATE_UPLOAD_STREAM] = { command_create_upload_stream },
[PA_COMMAND_DELETE_UPLOAD_STREAM] = { command_delete_stream },
[PA_COMMAND_FINISH_UPLOAD_STREAM] = { command_finish_upload_stream },
[PA_COMMAND_PLAY_SAMPLE] = { command_play_sample },
[PA_COMMAND_REMOVE_SAMPLE] = { command_remove_sample },
[PA_COMMAND_GET_SINK_INFO] = { command_get_info },
[PA_COMMAND_GET_SOURCE_INFO] = { command_get_info },
[PA_COMMAND_GET_CLIENT_INFO] = { command_get_info },
[PA_COMMAND_GET_MODULE_INFO] = { command_get_info },
[PA_COMMAND_GET_SINK_INPUT_INFO] = { command_get_info },
[PA_COMMAND_GET_SOURCE_OUTPUT_INFO] = { command_get_info },
[PA_COMMAND_GET_SAMPLE_INFO] = { command_get_info },
[PA_COMMAND_GET_SINK_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_SOURCE_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_MODULE_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_CLIENT_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_SINK_INPUT_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_SAMPLE_INFO_LIST] = { command_get_info_list },
[PA_COMMAND_GET_SERVER_INFO] = { command_get_server_info },
[PA_COMMAND_SUBSCRIBE] = { command_subscribe },
[PA_COMMAND_SET_SINK_VOLUME] = { command_set_volume },
[PA_COMMAND_SET_SINK_INPUT_VOLUME] = { command_set_volume },
[PA_COMMAND_CORK_PLAYBACK_STREAM] = { command_cork_playback_stream },
[PA_COMMAND_FLUSH_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
[PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = { command_flush_or_trigger_playback_stream },
};
/* structure management */
static struct upload_stream* upload_stream_new(struct connection *c, const struct pa_sample_spec *ss, const char *name, size_t length) {
struct upload_stream *s;
assert(c && ss && name && length);
s = pa_xmalloc(sizeof(struct upload_stream));
s->type = UPLOAD_STREAM;
s->connection = c;
s->sample_spec = *ss;
s->name = pa_xstrdup(name);
s->memchunk.memblock = NULL;
s->memchunk.index = 0;
s->memchunk.length = 0;
s->length = length;
pa_idxset_put(c->output_streams, s, &s->index);
return s;
}
static void upload_stream_free(struct upload_stream *o) {
assert(o && o->connection);
pa_idxset_remove_by_data(o->connection->output_streams, o, NULL);
pa_xfree(o->name);
if (o->memchunk.memblock)
pa_memblock_unref(o->memchunk.memblock);
pa_xfree(o);
}
static struct record_stream* record_stream_new(struct connection *c, struct pa_source *source, const struct pa_sample_spec *ss, const char *name, size_t maxlength, size_t fragment_size) {
struct record_stream *s;
struct pa_source_output *source_output;
size_t base;
assert(c && source && ss && name && maxlength);
if (!(source_output = pa_source_output_new(source, name, ss)))
return NULL;
s = pa_xmalloc(sizeof(struct record_stream));
s->connection = c;
s->source_output = source_output;
s->source_output->push = source_output_push_cb;
s->source_output->kill = source_output_kill_cb;
s->source_output->userdata = s;
s->source_output->owner = c->protocol->module;
s->source_output->client = c->client;
s->memblockq = pa_memblockq_new(maxlength, 0, base = pa_frame_size(ss), 0, 0, c->protocol->core->memblock_stat);
assert(s->memblockq);
s->fragment_size = (fragment_size/base)*base;
if (!s->fragment_size)
s->fragment_size = base;
pa_idxset_put(c->record_streams, s, &s->index);
return s;
}
static void record_stream_free(struct record_stream* r) {
assert(r && r->connection);
pa_idxset_remove_by_data(r->connection->record_streams, r, NULL);
pa_source_output_free(r->source_output);
pa_memblockq_free(r->memblockq);
pa_xfree(r);
}
static struct playback_stream* playback_stream_new(struct connection *c, struct pa_sink *sink, const struct pa_sample_spec *ss, const char *name,
size_t maxlength,
size_t tlength,
size_t prebuf,
size_t minreq) {
struct playback_stream *s;
struct pa_sink_input *sink_input;
assert(c && sink && ss && name && maxlength);
if (!(sink_input = pa_sink_input_new(sink, name, ss)))
return NULL;
s = pa_xmalloc(sizeof(struct playback_stream));
s->type = PLAYBACK_STREAM;
s->connection = c;
s->sink_input = sink_input;
s->sink_input->peek = sink_input_peek_cb;
s->sink_input->drop = sink_input_drop_cb;
s->sink_input->kill = sink_input_kill_cb;
s->sink_input->get_latency = sink_input_get_latency_cb;
s->sink_input->userdata = s;
s->sink_input->owner = c->protocol->module;
s->sink_input->client = c->client;
s->memblockq = pa_memblockq_new(maxlength, tlength, pa_frame_size(ss), prebuf, minreq, c->protocol->core->memblock_stat);
assert(s->memblockq);
s->requested_bytes = 0;
s->drain_request = 0;
pa_idxset_put(c->output_streams, s, &s->index);
return s;
}
static void playback_stream_free(struct playback_stream* p) {
assert(p && p->connection);
if (p->drain_request)
pa_pstream_send_error(p->connection->pstream, p->drain_tag, PA_ERROR_NOENTITY);
pa_idxset_remove_by_data(p->connection->output_streams, p, NULL);
pa_sink_input_free(p->sink_input);
pa_memblockq_free(p->memblockq);
pa_xfree(p);
}
static void connection_free(struct connection *c) {
struct record_stream *r;
struct output_stream *o;
assert(c && c->protocol);
pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
while ((r = pa_idxset_first(c->record_streams, NULL)))
record_stream_free(r);
pa_idxset_free(c->record_streams, NULL, NULL);
while ((o = pa_idxset_first(c->output_streams, NULL)))
if (o->type == PLAYBACK_STREAM)
playback_stream_free((struct playback_stream*) o);
else
upload_stream_free((struct upload_stream*) o);
pa_idxset_free(c->output_streams, NULL, NULL);
pa_pdispatch_unref(c->pdispatch);
pa_pstream_close(c->pstream);
pa_pstream_unref(c->pstream);
pa_client_free(c->client);
if (c->subscription)
pa_subscription_free(c->subscription);
pa_xfree(c);
}
static void request_bytes(struct playback_stream *s) {
struct pa_tagstruct *t;
size_t l;
assert(s);
if (!(l = pa_memblockq_missing(s->memblockq)))
return;
if (l <= s->requested_bytes)
return;
l -= s->requested_bytes;
if (l < pa_memblockq_get_minreq(s->memblockq))
return;
s->requested_bytes += l;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_REQUEST);
pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
pa_tagstruct_putu32(t, s->index);
pa_tagstruct_putu32(t, l);
pa_pstream_send_tagstruct(s->connection->pstream, t);
/*fprintf(stderr, "Requesting %u bytes\n", l);*/
}
static void send_memblock(struct connection *c) {
uint32_t start;
struct record_stream *r;
start = PA_IDXSET_INVALID;
for (;;) {
struct pa_memchunk chunk;
if (!(r = pa_idxset_rrobin(c->record_streams, &c->rrobin_index)))
return;
if (start == PA_IDXSET_INVALID)
start = c->rrobin_index;
else if (start == c->rrobin_index)
return;
if (pa_memblockq_peek(r->memblockq, &chunk) >= 0) {
if (chunk.length > r->fragment_size)
chunk.length = r->fragment_size;
pa_pstream_send_memblock(c->pstream, r->index, 0, &chunk);
pa_memblockq_drop(r->memblockq, &chunk, chunk.length);
pa_memblock_unref(chunk.memblock);
return;
}
}
}
static void send_playback_stream_killed(struct playback_stream *p) {
struct pa_tagstruct *t;
assert(p);
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_PLAYBACK_STREAM_KILLED);
pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
pa_tagstruct_putu32(t, p->index);
pa_pstream_send_tagstruct(p->connection->pstream, t);
}
static void send_record_stream_killed(struct record_stream *r) {
struct pa_tagstruct *t;
assert(r);
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_RECORD_STREAM_KILLED);
pa_tagstruct_putu32(t, (uint32_t) -1); /* tag */
pa_tagstruct_putu32(t, r->index);
pa_pstream_send_tagstruct(r->connection->pstream, t);
}
/*** sinkinput callbacks ***/
static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
struct playback_stream *s;
assert(i && i->userdata && chunk);
s = i->userdata;
/*fprintf(stderr, "%3.0f \r", (double) pa_memblockq_get_length(s->memblockq)/pa_memblockq_get_tlength(s->memblockq)*100);*/
if (pa_memblockq_peek(s->memblockq, chunk) < 0)
return -1;
return 0;
}
static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
struct playback_stream *s;
assert(i && i->userdata && length);
s = i->userdata;
pa_memblockq_drop(s->memblockq, chunk, length);
request_bytes(s);
if (s->drain_request && !pa_memblockq_is_readable(s->memblockq)) {
pa_pstream_send_simple_ack(s->connection->pstream, s->drain_tag);
s->drain_request = 0;
}
/*fprintf(stderr, "after_drop: %u\n", pa_memblockq_get_length(s->memblockq));*/
}
static void sink_input_kill_cb(struct pa_sink_input *i) {
assert(i && i->userdata);
send_playback_stream_killed((struct playback_stream *) i->userdata);
playback_stream_free((struct playback_stream *) i->userdata);
}
static uint32_t sink_input_get_latency_cb(struct pa_sink_input *i) {
struct playback_stream *s;
assert(i && i->userdata);
s = i->userdata;
/*fprintf(stderr, "get_latency: %u\n", pa_memblockq_get_length(s->memblockq));*/
return pa_bytes_to_usec(pa_memblockq_get_length(s->memblockq), &s->sink_input->sample_spec);
}
/*** source_output callbacks ***/
static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
struct record_stream *s;
assert(o && o->userdata && chunk);
s = o->userdata;
pa_memblockq_push(s->memblockq, chunk, 0);
if (!pa_pstream_is_pending(s->connection->pstream))
send_memblock(s->connection);
}
static void source_output_kill_cb(struct pa_source_output *o) {
assert(o && o->userdata);
send_record_stream_killed((struct record_stream *) o->userdata);
record_stream_free((struct record_stream *) o->userdata);
}
/*** pdispatch callbacks ***/
static void protocol_error(struct connection *c) {
fprintf(stderr, __FILE__": protocol error, kicking client\n");
connection_free(c);
}
static void command_create_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct playback_stream *s;
size_t maxlength, tlength, prebuf, minreq;
uint32_t sink_index;
const char *name, *sink_name;
struct pa_sample_spec ss;
struct pa_tagstruct *reply;
struct pa_sink *sink;
assert(c && t && c->protocol && c->protocol->core);
if (pa_tagstruct_gets(t, &name) < 0 ||
pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
pa_tagstruct_getu32(t, &sink_index) < 0 ||
pa_tagstruct_gets(t, &sink_name) < 0 ||
pa_tagstruct_getu32(t, &maxlength) < 0 ||
pa_tagstruct_getu32(t, &tlength) < 0 ||
pa_tagstruct_getu32(t, &prebuf) < 0 ||
pa_tagstruct_getu32(t, &minreq) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (sink_index != (uint32_t) -1)
sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
else
sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
if (!sink) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
if (!(s = playback_stream_new(c, sink, &ss, name, maxlength, tlength, prebuf, minreq))) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_putu32(reply, s->index);
assert(s->sink_input);
pa_tagstruct_putu32(reply, s->sink_input->index);
pa_pstream_send_tagstruct(c->pstream, reply);
request_bytes(s);
}
static void command_delete_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t channel;
assert(c && t);
if (pa_tagstruct_getu32(t, &channel) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (command == PA_COMMAND_DELETE_PLAYBACK_STREAM) {
struct playback_stream *s;
if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != PLAYBACK_STREAM)) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
return;
}
playback_stream_free(s);
} else if (command == PA_COMMAND_DELETE_RECORD_STREAM) {
struct record_stream *s;
if (!(s = pa_idxset_get_by_index(c->record_streams, channel))) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
return;
}
record_stream_free(s);
} else {
struct upload_stream *s;
assert(command == PA_COMMAND_DELETE_UPLOAD_STREAM);
if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
return;
}
upload_stream_free(s);
}
pa_pstream_send_simple_ack(c->pstream, tag);
}
static void command_create_record_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct record_stream *s;
size_t maxlength, fragment_size;
uint32_t source_index;
const char *name, *source_name;
struct pa_sample_spec ss;
struct pa_tagstruct *reply;
struct pa_source *source;
assert(c && t && c->protocol && c->protocol->core);
if (pa_tagstruct_gets(t, &name) < 0 ||
pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
pa_tagstruct_getu32(t, &source_index) < 0 ||
pa_tagstruct_gets(t, &source_name) < 0 ||
pa_tagstruct_getu32(t, &maxlength) < 0 ||
pa_tagstruct_getu32(t, &fragment_size) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (source_index != (uint32_t) -1)
source = pa_idxset_get_by_index(c->protocol->core->sources, source_index);
else
source = pa_namereg_get(c->protocol->core, *source_name ? source_name : NULL, PA_NAMEREG_SOURCE, 1);
if (!source) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
if (!(s = record_stream_new(c, source, &ss, name, maxlength, fragment_size))) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_putu32(reply, s->index);
assert(s->source_output);
pa_tagstruct_putu32(reply, s->source_output->index);
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void command_exit(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
assert(c && t);
if (!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
assert(c->protocol && c->protocol->core && c->protocol->core->mainloop);
c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
return;
}
static void command_auth(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
const void*cookie;
assert(c && t);
if (pa_tagstruct_get_arbitrary(t, &cookie, PA_NATIVE_COOKIE_LENGTH) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (memcmp(c->protocol->auth_cookie, cookie, PA_NATIVE_COOKIE_LENGTH) != 0) {
fprintf(stderr, "protocol-native.c: Denied access to client with invalid authorization key.\n");
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
c->authorized = 1;
pa_pstream_send_simple_ack(c->pstream, tag);
return;
}
static void command_set_name(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
const char *name;
assert(c && t);
if (pa_tagstruct_gets(t, &name) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
pa_client_rename(c->client, name);
pa_pstream_send_simple_ack(c->pstream, tag);
return;
}
static void command_lookup(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
const char *name;
uint32_t index = PA_IDXSET_INVALID;
assert(c && t);
if (pa_tagstruct_gets(t, &name) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (command == PA_COMMAND_LOOKUP_SINK) {
struct pa_sink *sink;
if ((sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1)))
index = sink->index;
} else {
struct pa_source *source;
assert(command == PA_COMMAND_LOOKUP_SOURCE);
if ((source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1)))
index = source->index;
}
if (index == PA_IDXSET_INVALID)
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
else {
struct pa_tagstruct *reply;
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_putu32(reply, index);
pa_pstream_send_tagstruct(c->pstream, reply);
}
}
static void command_drain_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t index;
struct playback_stream *s;
assert(c && t);
if (pa_tagstruct_getu32(t, &index) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
s->drain_request = 0;
pa_memblockq_prebuf_disable(s->memblockq);
if (!pa_memblockq_is_readable(s->memblockq))
pa_pstream_send_simple_ack(c->pstream, tag);
else {
s->drain_request = 1;
s->drain_tag = tag;
pa_sink_notify(s->sink_input->sink);
}
}
static void command_stat(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct pa_tagstruct *reply;
assert(c && t);
if (!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total);
pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->total_size);
pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated);
pa_tagstruct_putu32(reply, c->protocol->core->memblock_stat->allocated_size);
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void command_get_playback_latency(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct pa_tagstruct *reply;
struct playback_stream *s;
uint32_t index;
assert(c && t);
if (pa_tagstruct_getu32(t, &index) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_putu32(reply, pa_sink_input_get_latency(s->sink_input));
pa_tagstruct_putu32(reply, pa_sink_get_latency(s->sink_input->sink));
pa_tagstruct_putu32(reply, pa_memblockq_is_readable(s->memblockq));
pa_tagstruct_putu32(reply, pa_memblockq_get_length(s->memblockq));
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void command_create_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct upload_stream *s;
size_t length;
const char *name;
struct pa_sample_spec ss;
struct pa_tagstruct *reply;
assert(c && t && c->protocol && c->protocol->core);
if (pa_tagstruct_gets(t, &name) < 0 ||
pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
pa_tagstruct_getu32(t, &length) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if ((length % pa_frame_size(&ss)) != 0 || length <= 0 || !*name) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
return;
}
if (!(s = upload_stream_new(c, &ss, name, length))) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_INVALID);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_putu32(reply, s->index);
pa_pstream_send_tagstruct(c->pstream, reply);
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REQUEST);
pa_tagstruct_putu32(reply, (uint32_t) -1); /* tag */
pa_tagstruct_putu32(reply, s->index);
pa_tagstruct_putu32(reply, length);
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void command_finish_upload_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t channel;
struct upload_stream *s;
uint32_t index;
assert(c && t);
if (pa_tagstruct_getu32(t, &channel) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (!(s = pa_idxset_get_by_index(c->output_streams, channel)) || (s->type != UPLOAD_STREAM)) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_EXIST);
return;
}
pa_scache_add_item(c->protocol->core, s->name, &s->sample_spec, &s->memchunk, &index);
pa_pstream_send_simple_ack(c->pstream, tag);
upload_stream_free(s);
}
static void command_play_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t sink_index, volume;
struct pa_sink *sink;
const char *name, *sink_name;
assert(c && t);
if (pa_tagstruct_getu32(t, &sink_index) < 0 ||
pa_tagstruct_gets(t, &sink_name) < 0 ||
pa_tagstruct_getu32(t, &volume) < 0 ||
pa_tagstruct_gets(t, &name) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (sink_index != (uint32_t) -1)
sink = pa_idxset_get_by_index(c->protocol->core->sinks, sink_index);
else
sink = pa_namereg_get(c->protocol->core, *sink_name ? sink_name : NULL, PA_NAMEREG_SINK, 1);
if (!sink) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
if (pa_scache_play_item(c->protocol->core, name, sink, volume) < 0) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
pa_pstream_send_simple_ack(c->pstream, tag);
}
static void command_remove_sample(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
const char *name;
assert(c && t);
if (pa_tagstruct_gets(t, &name) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (pa_scache_remove_item(c->protocol->core, name) < 0) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
pa_pstream_send_simple_ack(c->pstream, tag);
}
static void sink_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink *sink) {
assert(t && sink);
pa_tagstruct_putu32(t, sink->index);
pa_tagstruct_puts(t, sink->name);
pa_tagstruct_puts(t, sink->description ? sink->description : "");
pa_tagstruct_put_sample_spec(t, &sink->sample_spec);
pa_tagstruct_putu32(t, sink->owner ? sink->owner->index : (uint32_t) -1);
pa_tagstruct_putu32(t, sink->volume);
pa_tagstruct_putu32(t, sink->monitor_source->index);
pa_tagstruct_puts(t, sink->monitor_source->name);
pa_tagstruct_putu32(t, pa_sink_get_latency(sink));
}
static void source_fill_tagstruct(struct pa_tagstruct *t, struct pa_source *source) {
assert(t && source);
pa_tagstruct_putu32(t, source->index);
pa_tagstruct_puts(t, source->name);
pa_tagstruct_puts(t, source->description ? source->description : "");
pa_tagstruct_put_sample_spec(t, &source->sample_spec);
pa_tagstruct_putu32(t, source->owner ? source->owner->index : (uint32_t) -1);
pa_tagstruct_putu32(t, source->monitor_of ? source->monitor_of->index : (uint32_t) -1);
pa_tagstruct_puts(t, source->monitor_of ? source->monitor_of->name : "");
}
static void client_fill_tagstruct(struct pa_tagstruct *t, struct pa_client *client) {
assert(t && client);
pa_tagstruct_putu32(t, client->index);
pa_tagstruct_puts(t, client->name);
pa_tagstruct_puts(t, client->protocol_name);
pa_tagstruct_putu32(t, client->owner ? client->owner->index : (uint32_t) -1);
}
static void module_fill_tagstruct(struct pa_tagstruct *t, struct pa_module *module) {
assert(t && module);
pa_tagstruct_putu32(t, module->index);
pa_tagstruct_puts(t, module->name);
pa_tagstruct_puts(t, module->argument ? module->argument : "");
pa_tagstruct_putu32(t, module->n_used);
pa_tagstruct_putu32(t, module->auto_unload);
}
static void sink_input_fill_tagstruct(struct pa_tagstruct *t, struct pa_sink_input *s) {
assert(t && s);
pa_tagstruct_putu32(t, s->index);
pa_tagstruct_puts(t, s->name ? s->name : "");
pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
pa_tagstruct_putu32(t, s->sink->index);
pa_tagstruct_put_sample_spec(t, &s->sample_spec);
pa_tagstruct_putu32(t, s->volume);
pa_tagstruct_putu32(t, pa_sink_input_get_latency(s));
pa_tagstruct_putu32(t, pa_sink_get_latency(s->sink));
}
static void source_output_fill_tagstruct(struct pa_tagstruct *t, struct pa_source_output *s) {
assert(t && s);
pa_tagstruct_putu32(t, s->index);
pa_tagstruct_puts(t, s->name ? s->name : "");
pa_tagstruct_putu32(t, s->owner ? s->owner->index : (uint32_t) -1);
pa_tagstruct_putu32(t, s->client ? s->client->index : (uint32_t) -1);
pa_tagstruct_putu32(t, s->source->index);
pa_tagstruct_put_sample_spec(t, &s->sample_spec);
}
static void scache_fill_tagstruct(struct pa_tagstruct *t, struct pa_scache_entry *e) {
assert(t && e);
pa_tagstruct_putu32(t, e->index);
pa_tagstruct_puts(t, e->name);
pa_tagstruct_putu32(t, e->volume);
pa_tagstruct_putu32(t, pa_bytes_to_usec(e->memchunk.length, &e->sample_spec));
pa_tagstruct_put_sample_spec(t, &e->sample_spec);
}
static void command_get_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t index;
struct pa_sink *sink = NULL;
struct pa_source *source = NULL;
struct pa_client *client = NULL;
struct pa_module *module = NULL;
struct pa_sink_input *si = NULL;
struct pa_source_output *so = NULL;
struct pa_scache_entry *sce = NULL;
const char *name;
struct pa_tagstruct *reply;
assert(c && t);
if (pa_tagstruct_getu32(t, &index) < 0 ||
(command != PA_COMMAND_GET_CLIENT_INFO &&
command != PA_COMMAND_GET_MODULE_INFO &&
command != PA_COMMAND_GET_SINK_INPUT_INFO &&
command != PA_COMMAND_GET_SOURCE_OUTPUT_INFO &&
pa_tagstruct_gets(t, &name) < 0) ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (command == PA_COMMAND_GET_SINK_INFO) {
if (index != (uint32_t) -1)
sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
else
sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
} else if (command == PA_COMMAND_GET_SOURCE_INFO) {
if (index != (uint32_t) -1)
source = pa_idxset_get_by_index(c->protocol->core->sources, index);
else
source = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SOURCE, 1);
} else if (command == PA_COMMAND_GET_CLIENT_INFO)
client = pa_idxset_get_by_index(c->protocol->core->clients, index);
else if (command == PA_COMMAND_GET_MODULE_INFO)
module = pa_idxset_get_by_index(c->protocol->core->modules, index);
else if (command == PA_COMMAND_GET_SINK_INPUT_INFO)
si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO)
so = pa_idxset_get_by_index(c->protocol->core->source_outputs, index);
else {
assert(command == PA_COMMAND_GET_SAMPLE_INFO && name);
if (index != (uint32_t) -1)
sce = pa_idxset_get_by_index(c->protocol->core->scache, index);
else
sce = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SAMPLE, 0);
}
if (!sink && !source && !client && !module && !si && !so && !sce) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
if (sink)
sink_fill_tagstruct(reply, sink);
else if (source)
source_fill_tagstruct(reply, source);
else if (client)
client_fill_tagstruct(reply, client);
else if (module)
module_fill_tagstruct(reply, module);
else if (si)
sink_input_fill_tagstruct(reply, si);
else if (so)
source_output_fill_tagstruct(reply, so);
else
scache_fill_tagstruct(reply, sce);
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void command_get_info_list(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct pa_idxset *i;
uint32_t index;
void *p;
struct pa_tagstruct *reply;
assert(c && t);
if (!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
if (command == PA_COMMAND_GET_SINK_INFO_LIST)
i = c->protocol->core->sinks;
else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
i = c->protocol->core->sources;
else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
i = c->protocol->core->clients;
else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
i = c->protocol->core->modules;
else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
i = c->protocol->core->sink_inputs;
else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
i = c->protocol->core->source_outputs;
else {
assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
i = c->protocol->core->scache;
}
if (i) {
for (p = pa_idxset_first(i, &index); p; p = pa_idxset_next(i, &index)) {
if (command == PA_COMMAND_GET_SINK_INFO_LIST)
sink_fill_tagstruct(reply, p);
else if (command == PA_COMMAND_GET_SOURCE_INFO_LIST)
source_fill_tagstruct(reply, p);
else if (command == PA_COMMAND_GET_CLIENT_INFO_LIST)
client_fill_tagstruct(reply, p);
else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
module_fill_tagstruct(reply, p);
else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
sink_input_fill_tagstruct(reply, p);
else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
source_output_fill_tagstruct(reply, p);
else {
assert(command == PA_COMMAND_GET_SAMPLE_INFO_LIST);
scache_fill_tagstruct(reply, p);
}
}
}
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void command_get_server_info(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
struct pa_tagstruct *reply;
char txt[256];
assert(c && t);
if (!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
reply = pa_tagstruct_new(NULL, 0);
assert(reply);
pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
pa_tagstruct_putu32(reply, tag);
pa_tagstruct_puts(reply, PACKAGE_NAME);
pa_tagstruct_puts(reply, PACKAGE_VERSION);
pa_tagstruct_puts(reply, pa_get_user_name(txt, sizeof(txt)));
pa_tagstruct_puts(reply, pa_get_host_name(txt, sizeof(txt)));
pa_tagstruct_put_sample_spec(reply, &c->protocol->core->default_sample_spec);
pa_pstream_send_tagstruct(c->pstream, reply);
}
static void subscription_cb(struct pa_core *core, enum pa_subscription_event_type e, uint32_t index, void *userdata) {
struct pa_tagstruct *t;
struct connection *c = userdata;
assert(c && core);
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE_EVENT);
pa_tagstruct_putu32(t, (uint32_t) -1);
pa_tagstruct_putu32(t, e);
pa_tagstruct_putu32(t, index);
pa_pstream_send_tagstruct(c->pstream, t);
}
static void command_subscribe(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
enum pa_subscription_mask m;
assert(c && t);
if (pa_tagstruct_getu32(t, &m) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (c->subscription)
pa_subscription_free(c->subscription);
if (m != 0) {
c->subscription = pa_subscription_new(c->protocol->core, m, subscription_cb, c);
assert(c->subscription);
} else
c->subscription = NULL;
pa_pstream_send_simple_ack(c->pstream, tag);
}
static void command_set_volume(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t index, volume;
struct pa_sink *sink = NULL;
struct pa_sink_input *si = NULL;
const char *name = NULL;
assert(c && t);
if (pa_tagstruct_getu32(t, &index) < 0 ||
(command == PA_COMMAND_SET_SINK_VOLUME && pa_tagstruct_gets(t, &name) < 0) ||
pa_tagstruct_getu32(t, &volume) ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (command == PA_COMMAND_SET_SINK_VOLUME) {
if (index != (uint32_t) -1)
sink = pa_idxset_get_by_index(c->protocol->core->sinks, index);
else
sink = pa_namereg_get(c->protocol->core, *name ? name : NULL, PA_NAMEREG_SINK, 1);
} else {
assert(command == PA_COMMAND_SET_SINK_INPUT_VOLUME);
si = pa_idxset_get_by_index(c->protocol->core->sink_inputs, index);
}
if (!si && !sink) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
if (sink)
pa_sink_set_volume(sink, volume);
else if (si)
pa_sink_input_set_volume(si, volume);
pa_pstream_send_simple_ack(c->pstream, tag);
}
static void command_cork_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t index;
uint32_t b;
struct playback_stream *s;
assert(c && t);
if (pa_tagstruct_getu32(t, &index) < 0 ||
pa_tagstruct_getu32(t, &b) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
pa_sink_input_cork(s->sink_input, b);
pa_pstream_send_simple_ack(c->pstream, tag);
}
static void command_flush_or_trigger_playback_stream(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct connection *c = userdata;
uint32_t index;
struct playback_stream *s;
assert(c && t);
if (pa_tagstruct_getu32(t, &index) < 0 ||
!pa_tagstruct_eof(t)) {
protocol_error(c);
return;
}
if (!c->authorized) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_ACCESS);
return;
}
if (!(s = pa_idxset_get_by_index(c->output_streams, index)) || s->type != PLAYBACK_STREAM) {
pa_pstream_send_error(c->pstream, tag, PA_ERROR_NOENTITY);
return;
}
if (command == PA_COMMAND_TRIGGER_PLAYBACK_STREAM)
pa_memblockq_prebuf_disable(s->memblockq);
else {
assert(command == PA_COMMAND_FLUSH_PLAYBACK_STREAM);
pa_memblockq_flush(s->memblockq);
/*fprintf(stderr, "flush: %u\n", pa_memblockq_get_length(s->memblockq));*/
}
pa_sink_notify(s->sink_input->sink);
pa_pstream_send_simple_ack(c->pstream, tag);
request_bytes(s);
}
/*** pstream callbacks ***/
static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
struct connection *c = userdata;
assert(p && packet && packet->data && c);
if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
fprintf(stderr, "protocol-native: invalid packet.\n");
connection_free(c);
}
}
static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
struct connection *c = userdata;
struct output_stream *stream;
assert(p && chunk && userdata);
if (!(stream = pa_idxset_get_by_index(c->output_streams, channel))) {
fprintf(stderr, "protocol-native: client sent block for invalid stream.\n");
connection_free(c);
return;
}
if (stream->type == PLAYBACK_STREAM) {
struct playback_stream *p = (struct playback_stream*) stream;
if (chunk->length >= p->requested_bytes)
p->requested_bytes = 0;
else
p->requested_bytes -= chunk->length;
pa_memblockq_push_align(p->memblockq, chunk, delta);
assert(p->sink_input);
/*fprintf(stderr, "after_recv: %u\n", pa_memblockq_get_length(p->memblockq));*/
pa_sink_notify(p->sink_input->sink);
/*fprintf(stderr, "Recieved %u bytes.\n", chunk->length);*/
} else {
struct upload_stream *u = (struct upload_stream*) stream;
size_t l;
assert(u->type == UPLOAD_STREAM);
if (!u->memchunk.memblock) {
if (u->length == chunk->length) {
u->memchunk = *chunk;
pa_memblock_ref(u->memchunk.memblock);
u->length = 0;
} else {
u->memchunk.memblock = pa_memblock_new(u->length, c->protocol->core->memblock_stat);
u->memchunk.index = u->memchunk.length = 0;
}
}
assert(u->memchunk.memblock);
l = u->length;
if (l > chunk->length)
l = chunk->length;
if (l > 0) {
memcpy((uint8_t*) u->memchunk.memblock->data + u->memchunk.index + u->memchunk.length,
(uint8_t*) chunk->memblock->data+chunk->index, l);
u->memchunk.length += l;
u->length -= l;
}
}
}
static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
struct connection *c = userdata;
assert(p && c);
connection_free(c);
/* fprintf(stderr, "protocol-native: connection died.\n");*/
}
static void pstream_drain_callback(struct pa_pstream *p, void *userdata) {
struct connection *c = userdata;
assert(p && c);
send_memblock(c);
}
/*** client callbacks ***/
static void client_kill_cb(struct pa_client *c) {
assert(c && c->userdata);
connection_free(c->userdata);
}
/*** socket server callbacks ***/
static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
struct pa_protocol_native *p = userdata;
struct connection *c;
assert(io && p);
c = pa_xmalloc(sizeof(struct connection));
c->authorized = p->public;
c->protocol = p;
assert(p->core);
c->client = pa_client_new(p->core, "NATIVE", "Client");
assert(c->client);
c->client->kill = client_kill_cb;
c->client->userdata = c;
c->client->owner = p->module;
c->pstream = pa_pstream_new(p->core->mainloop, io, p->core->memblock_stat);
assert(c->pstream);
pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
c->pdispatch = pa_pdispatch_new(p->core->mainloop, command_table, PA_COMMAND_MAX);
assert(c->pdispatch);
c->record_streams = pa_idxset_new(NULL, NULL);
c->output_streams = pa_idxset_new(NULL, NULL);
assert(c->record_streams && c->output_streams);
c->rrobin_index = PA_IDXSET_INVALID;
c->subscription = NULL;
pa_idxset_put(p->connections, c, NULL);
}
/*** module entry points ***/
static struct pa_protocol_native* protocol_new_internal(struct pa_core *c, struct pa_module *m, struct pa_modargs *ma) {
struct pa_protocol_native *p;
uint32_t public;
assert(c && ma);
if (pa_modargs_get_value_u32(ma, "public", &public) < 0) {
fprintf(stderr, __FILE__": public= expects numeric argument.\n");
return NULL;
}
p = pa_xmalloc(sizeof(struct pa_protocol_native));
if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), p->auth_cookie, sizeof(p->auth_cookie)) < 0) {
pa_xfree(p);
return NULL;
}
p->module = m;
p->public = public;
p->server = NULL;
p->core = c;
p->connections = pa_idxset_new(NULL, NULL);
assert(p->connections);
return p;
}
struct pa_protocol_native* pa_protocol_native_new(struct pa_core *core, struct pa_socket_server *server, struct pa_module *m, struct pa_modargs *ma) {
struct pa_protocol_native *p;
if (!(p = protocol_new_internal(core, m, ma)))
return NULL;
p->server = server;
pa_socket_server_set_callback(p->server, on_connection, p);
return p;
}
void pa_protocol_native_free(struct pa_protocol_native *p) {
struct connection *c;
assert(p);
while ((c = pa_idxset_first(p->connections, NULL)))
connection_free(c);
pa_idxset_free(p->connections, NULL, NULL);
if (p->server)
pa_socket_server_unref(p->server);
pa_xfree(p);
}
struct pa_protocol_native* pa_protocol_native_new_iochannel(struct pa_core*core, struct pa_iochannel *io, struct pa_module *m, struct pa_modargs *ma) {
struct pa_protocol_native *p;
if (!(p = protocol_new_internal(core, m, ma)))
return NULL;
on_connection(NULL, io, p);
return p;
}
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