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-rw-r--r--src/pulse/context.c980
1 files changed, 980 insertions, 0 deletions
diff --git a/src/pulse/context.c b/src/pulse/context.c
new file mode 100644
index 00000000..648024c3
--- /dev/null
+++ b/src/pulse/context.c
@@ -0,0 +1,980 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; 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 <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <signal.h>
+#include <limits.h>
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#include "../pulsecore/winsock.h"
+
+#include <pulsecore/core-error.h>
+#include <pulse/version.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/native-common.h>
+#include <pulsecore/pdispatch.h>
+#include <pulsecore/pstream.h>
+#include <pulsecore/dynarray.h>
+#include <pulsecore/socket-client.h>
+#include <pulsecore/pstream-util.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/log.h>
+#include <pulsecore/socket-util.h>
+
+#include "internal.h"
+
+#include "client-conf.h"
+
+#ifdef HAVE_X11
+#include "client-conf-x11.h"
+#endif
+
+#include "context.h"
+
+#define AUTOSPAWN_LOCK "autospawn.lock"
+
+static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
+ [PA_COMMAND_REQUEST] = pa_command_request,
+ [PA_COMMAND_OVERFLOW] = pa_command_overflow_or_underflow,
+ [PA_COMMAND_UNDERFLOW] = pa_command_overflow_or_underflow,
+ [PA_COMMAND_PLAYBACK_STREAM_KILLED] = pa_command_stream_killed,
+ [PA_COMMAND_RECORD_STREAM_KILLED] = pa_command_stream_killed,
+ [PA_COMMAND_SUBSCRIBE_EVENT] = pa_command_subscribe_event
+};
+
+static void unlock_autospawn_lock_file(pa_context *c) {
+ assert(c);
+
+ if (c->autospawn_lock_fd >= 0) {
+ char lf[PATH_MAX];
+ pa_runtime_path(AUTOSPAWN_LOCK, lf, sizeof(lf));
+
+ pa_unlock_lockfile(lf, c->autospawn_lock_fd);
+ c->autospawn_lock_fd = -1;
+ }
+}
+
+pa_context *pa_context_new(pa_mainloop_api *mainloop, const char *name) {
+ pa_context *c;
+
+ assert(mainloop);
+ assert(name);
+
+ c = pa_xnew(pa_context, 1);
+ c->ref = 1;
+ c->name = pa_xstrdup(name);
+ c->mainloop = mainloop;
+ c->client = NULL;
+ c->pstream = NULL;
+ c->pdispatch = NULL;
+ c->playback_streams = pa_dynarray_new();
+ c->record_streams = pa_dynarray_new();
+
+ PA_LLIST_HEAD_INIT(pa_stream, c->streams);
+ PA_LLIST_HEAD_INIT(pa_operation, c->operations);
+
+ c->error = PA_OK;
+ c->state = PA_CONTEXT_UNCONNECTED;
+ c->ctag = 0;
+ c->csyncid = 0;
+
+ c->state_callback = NULL;
+ c->state_userdata = NULL;
+
+ c->subscribe_callback = NULL;
+ c->subscribe_userdata = NULL;
+
+ c->memblock_stat = pa_memblock_stat_new();
+ c->local = -1;
+ c->server_list = NULL;
+ c->server = NULL;
+ c->autospawn_lock_fd = -1;
+ memset(&c->spawn_api, 0, sizeof(c->spawn_api));
+ c->do_autospawn = 0;
+
+#ifdef SIGPIPE
+ pa_check_signal_is_blocked(SIGPIPE);
+#endif
+
+ c->conf = pa_client_conf_new();
+ pa_client_conf_load(c->conf, NULL);
+#ifdef HAVE_X11
+ pa_client_conf_from_x11(c->conf, NULL);
+#endif
+ pa_client_conf_env(c->conf);
+
+ return c;
+}
+
+static void context_free(pa_context *c) {
+ assert(c);
+
+ unlock_autospawn_lock_file(c);
+
+ while (c->operations)
+ pa_operation_cancel(c->operations);
+
+ while (c->streams)
+ pa_stream_set_state(c->streams, PA_STREAM_TERMINATED);
+
+ if (c->client)
+ pa_socket_client_unref(c->client);
+ if (c->pdispatch)
+ pa_pdispatch_unref(c->pdispatch);
+ if (c->pstream) {
+ pa_pstream_close(c->pstream);
+ pa_pstream_unref(c->pstream);
+ }
+
+ if (c->record_streams)
+ pa_dynarray_free(c->record_streams, NULL, NULL);
+ if (c->playback_streams)
+ pa_dynarray_free(c->playback_streams, NULL, NULL);
+
+ pa_memblock_stat_unref(c->memblock_stat);
+
+ if (c->conf)
+ pa_client_conf_free(c->conf);
+
+ pa_strlist_free(c->server_list);
+
+ pa_xfree(c->name);
+ pa_xfree(c->server);
+ pa_xfree(c);
+}
+
+pa_context* pa_context_ref(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ c->ref++;
+ return c;
+}
+
+void pa_context_unref(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ if (--c->ref <= 0)
+ context_free(c);
+}
+
+void pa_context_set_state(pa_context *c, pa_context_state_t st) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ if (c->state == st)
+ return;
+
+ pa_context_ref(c);
+
+ c->state = st;
+ if (c->state_callback)
+ c->state_callback(c, c->state_userdata);
+
+ if (st == PA_CONTEXT_FAILED || st == PA_CONTEXT_TERMINATED) {
+ pa_stream *s;
+
+ s = c->streams ? pa_stream_ref(c->streams) : NULL;
+ while (s) {
+ pa_stream *n = s->next ? pa_stream_ref(s->next) : NULL;
+ pa_stream_set_state(s, st == PA_CONTEXT_FAILED ? PA_STREAM_FAILED : PA_STREAM_TERMINATED);
+ pa_stream_unref(s);
+ s = n;
+ }
+
+ if (c->pdispatch)
+ pa_pdispatch_unref(c->pdispatch);
+ c->pdispatch = NULL;
+
+ if (c->pstream) {
+ pa_pstream_close(c->pstream);
+ pa_pstream_unref(c->pstream);
+ }
+ c->pstream = NULL;
+
+ if (c->client)
+ pa_socket_client_unref(c->client);
+ c->client = NULL;
+ }
+
+ pa_context_unref(c);
+}
+
+void pa_context_fail(pa_context *c, int error) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ pa_context_set_error(c, error);
+ pa_context_set_state(c, PA_CONTEXT_FAILED);
+}
+
+int pa_context_set_error(pa_context *c, int error) {
+ assert(error >= 0);
+ assert(error < PA_ERR_MAX);
+
+ if (c)
+ c->error = error;
+
+ return error;
+}
+
+static void pstream_die_callback(pa_pstream *p, void *userdata) {
+ pa_context *c = userdata;
+
+ assert(p);
+ assert(c);
+
+ pa_context_fail(c, PA_ERR_CONNECTIONTERMINATED);
+}
+
+static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const void *creds, void *userdata) {
+ pa_context *c = userdata;
+
+ assert(p);
+ assert(packet);
+ assert(c);
+
+ pa_context_ref(c);
+
+ if (pa_pdispatch_run(c->pdispatch, packet, creds, c) < 0)
+ pa_context_fail(c, PA_ERR_PROTOCOL);
+
+ pa_context_unref(c);
+}
+
+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) {
+ pa_context *c = userdata;
+ pa_stream *s;
+
+ assert(p);
+ assert(chunk);
+ assert(chunk->memblock);
+ assert(chunk->length);
+ assert(c);
+ assert(c->ref >= 1);
+
+ pa_context_ref(c);
+
+ if ((s = pa_dynarray_get(c->record_streams, channel))) {
+
+ assert(seek == PA_SEEK_RELATIVE && offset == 0);
+
+ pa_memblockq_seek(s->record_memblockq, offset, seek);
+ pa_memblockq_push_align(s->record_memblockq, chunk);
+
+ if (s->read_callback) {
+ size_t l;
+
+ if ((l = pa_memblockq_get_length(s->record_memblockq)) > 0)
+ s->read_callback(s, l, s->read_userdata);
+ }
+ }
+
+ pa_context_unref(c);
+}
+
+int pa_context_handle_error(pa_context *c, uint32_t command, pa_tagstruct *t) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ if (command == PA_COMMAND_ERROR) {
+ assert(t);
+
+ if (pa_tagstruct_getu32(t, &c->error) < 0) {
+ pa_context_fail(c, PA_ERR_PROTOCOL);
+ return -1;
+
+ }
+ } else if (command == PA_COMMAND_TIMEOUT)
+ c->error = PA_ERR_TIMEOUT;
+ else {
+ pa_context_fail(c, PA_ERR_PROTOCOL);
+ return -1;
+ }
+
+ return 0;
+}
+
+static void setup_complete_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+ pa_context *c = userdata;
+
+ assert(pd);
+ assert(c);
+ assert(c->state == PA_CONTEXT_AUTHORIZING || c->state == PA_CONTEXT_SETTING_NAME);
+
+ pa_context_ref(c);
+
+ if (command != PA_COMMAND_REPLY) {
+
+ if (pa_context_handle_error(c, command, t) < 0)
+ pa_context_fail(c, PA_ERR_PROTOCOL);
+
+ pa_context_fail(c, c->error);
+ goto finish;
+ }
+
+ switch(c->state) {
+ case PA_CONTEXT_AUTHORIZING: {
+ pa_tagstruct *reply;
+
+ if (pa_tagstruct_getu32(t, &c->version) < 0 ||
+ !pa_tagstruct_eof(t)) {
+ pa_context_fail(c, PA_ERR_PROTOCOL);
+ goto finish;
+ }
+
+ /* Minimum supported version */
+ if (c->version < 8) {
+ pa_context_fail(c, PA_ERR_VERSION);
+ goto finish;
+ }
+
+ reply = pa_tagstruct_command(c, PA_COMMAND_SET_CLIENT_NAME, &tag);
+ pa_tagstruct_puts(reply, c->name);
+ pa_pstream_send_tagstruct(c->pstream, reply);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c, NULL);
+
+ pa_context_set_state(c, PA_CONTEXT_SETTING_NAME);
+ break;
+ }
+
+ case PA_CONTEXT_SETTING_NAME :
+ pa_context_set_state(c, PA_CONTEXT_READY);
+ break;
+
+ default:
+ assert(0);
+ }
+
+finish:
+ pa_context_unref(c);
+}
+
+static void setup_context(pa_context *c, pa_iochannel *io) {
+ pa_tagstruct *t;
+ uint32_t tag;
+
+ assert(c);
+ assert(io);
+
+ pa_context_ref(c);
+
+ assert(!c->pstream);
+ c->pstream = pa_pstream_new(c->mainloop, io, c->memblock_stat);
+
+ pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
+ pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
+ pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
+
+ assert(!c->pdispatch);
+ c->pdispatch = pa_pdispatch_new(c->mainloop, command_table, PA_COMMAND_MAX);
+
+ if (!c->conf->cookie_valid) {
+ pa_context_fail(c, PA_ERR_AUTHKEY);
+ goto finish;
+ }
+
+ t = pa_tagstruct_command(c, PA_COMMAND_AUTH, &tag);
+ pa_tagstruct_putu32(t, PA_PROTOCOL_VERSION);
+ pa_tagstruct_put_arbitrary(t, c->conf->cookie, sizeof(c->conf->cookie));
+ pa_pstream_send_tagstruct_with_creds(c->pstream, t, 1);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c, NULL);
+
+ pa_context_set_state(c, PA_CONTEXT_AUTHORIZING);
+
+finish:
+
+ pa_context_unref(c);
+}
+
+static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata);
+
+#ifndef OS_IS_WIN32
+
+static int context_connect_spawn(pa_context *c) {
+ pid_t pid;
+ int status, r;
+ int fds[2] = { -1, -1} ;
+ pa_iochannel *io;
+
+ pa_context_ref(c);
+
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) {
+ pa_log(__FILE__": socketpair(): %s", pa_cstrerror(errno));
+ pa_context_fail(c, PA_ERR_INTERNAL);
+ goto fail;
+ }
+
+ pa_fd_set_cloexec(fds[0], 1);
+
+ pa_socket_low_delay(fds[0]);
+ pa_socket_low_delay(fds[1]);
+
+ if (c->spawn_api.prefork)
+ c->spawn_api.prefork();
+
+ if ((pid = fork()) < 0) {
+ pa_log(__FILE__": fork(): %s", pa_cstrerror(errno));
+ pa_context_fail(c, PA_ERR_INTERNAL);
+
+ if (c->spawn_api.postfork)
+ c->spawn_api.postfork();
+
+ goto fail;
+ } else if (!pid) {
+ /* Child */
+
+ char t[128];
+ const char *state = NULL;
+#define MAX_ARGS 64
+ const char * argv[MAX_ARGS+1];
+ int n;
+
+ /* Not required, since fds[0] has CLOEXEC enabled anyway */
+ close(fds[0]);
+
+ if (c->spawn_api.atfork)
+ c->spawn_api.atfork();
+
+ /* Setup argv */
+
+ n = 0;
+
+ argv[n++] = c->conf->daemon_binary;
+ argv[n++] = "--daemonize=yes";
+
+ snprintf(t, sizeof(t), "-Lmodule-native-protocol-fd fd=%i", fds[1]);
+ argv[n++] = strdup(t);
+
+ while (n < MAX_ARGS) {
+ char *a;
+
+ if (!(a = pa_split_spaces(c->conf->extra_arguments, &state)))
+ break;
+
+ argv[n++] = a;
+ }
+
+ argv[n++] = NULL;
+
+ execv(argv[0], (char * const *) argv);
+ _exit(1);
+#undef MAX_ARGS
+ }
+
+ /* Parent */
+
+ r = waitpid(pid, &status, 0);
+
+ if (c->spawn_api.postfork)
+ c->spawn_api.postfork();
+
+ if (r < 0) {
+ pa_log(__FILE__": waitpid(): %s", pa_cstrerror(errno));
+ pa_context_fail(c, PA_ERR_INTERNAL);
+ goto fail;
+ } else if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+ pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
+ goto fail;
+ }
+
+ close(fds[1]);
+
+ c->local = 1;
+
+ io = pa_iochannel_new(c->mainloop, fds[0], fds[0]);
+
+ setup_context(c, io);
+ unlock_autospawn_lock_file(c);
+
+ pa_context_unref(c);
+
+ return 0;
+
+fail:
+ if (fds[0] != -1)
+ close(fds[0]);
+ if (fds[1] != -1)
+ close(fds[1]);
+
+ unlock_autospawn_lock_file(c);
+
+ pa_context_unref(c);
+
+ return -1;
+}
+
+#endif /* OS_IS_WIN32 */
+
+static int try_next_connection(pa_context *c) {
+ char *u = NULL;
+ int r = -1;
+
+ assert(c);
+ assert(!c->client);
+
+ for (;;) {
+ pa_xfree(u);
+ u = NULL;
+
+ c->server_list = pa_strlist_pop(c->server_list, &u);
+
+ if (!u) {
+
+#ifndef OS_IS_WIN32
+ if (c->do_autospawn) {
+ r = context_connect_spawn(c);
+ goto finish;
+ }
+#endif
+
+ pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
+ goto finish;
+ }
+
+ pa_log_debug(__FILE__": Trying to connect to %s...", u);
+
+ pa_xfree(c->server);
+ c->server = pa_xstrdup(u);
+
+ if (!(c->client = pa_socket_client_new_string(c->mainloop, u, PA_NATIVE_DEFAULT_PORT)))
+ continue;
+
+ c->local = pa_socket_client_is_local(c->client);
+ pa_socket_client_set_callback(c->client, on_connection, c);
+ break;
+ }
+
+ r = 0;
+
+finish:
+ pa_xfree(u);
+
+ return r;
+}
+
+static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata) {
+ pa_context *c = userdata;
+
+ assert(client);
+ assert(c);
+ assert(c->state == PA_CONTEXT_CONNECTING);
+
+ pa_context_ref(c);
+
+ pa_socket_client_unref(client);
+ c->client = NULL;
+
+ if (!io) {
+ /* Try the item in the list */
+ if (errno == ECONNREFUSED || errno == ETIMEDOUT || errno == EHOSTUNREACH) {
+ try_next_connection(c);
+ goto finish;
+ }
+
+ pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
+ goto finish;
+ }
+
+ unlock_autospawn_lock_file(c);
+ setup_context(c, io);
+
+finish:
+ pa_context_unref(c);
+}
+
+int pa_context_connect(
+ pa_context *c,
+ const char *server,
+ pa_context_flags_t flags,
+ const pa_spawn_api *api) {
+
+ int r = -1;
+
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY(c, c->state == PA_CONTEXT_UNCONNECTED, PA_ERR_BADSTATE);
+ PA_CHECK_VALIDITY(c, !(flags & ~PA_CONTEXT_NOAUTOSPAWN), PA_ERR_INVALID);
+ PA_CHECK_VALIDITY(c, !server || *server, PA_ERR_INVALID);
+
+ if (!server)
+ server = c->conf->default_server;
+
+ pa_context_ref(c);
+
+ assert(!c->server_list);
+
+ if (server) {
+ if (!(c->server_list = pa_strlist_parse(server))) {
+ pa_context_fail(c, PA_ERR_INVALIDSERVER);
+ goto finish;
+ }
+ } else {
+ char *d;
+ char ufn[PATH_MAX];
+
+ /* Prepend in reverse order */
+
+ if ((d = getenv("DISPLAY"))) {
+ char *e;
+ d = pa_xstrdup(d);
+ if ((e = strchr(d, ':')))
+ *e = 0;
+
+ if (*d)
+ c->server_list = pa_strlist_prepend(c->server_list, d);
+
+ pa_xfree(d);
+ }
+
+ c->server_list = pa_strlist_prepend(c->server_list, "tcp6:localhost");
+ c->server_list = pa_strlist_prepend(c->server_list, "localhost");
+ c->server_list = pa_strlist_prepend(c->server_list, pa_runtime_path(PA_NATIVE_DEFAULT_UNIX_SOCKET, ufn, sizeof(ufn)));
+
+ /* Wrap the connection attempts in a single transaction for sane autospawn locking */
+ if (!(flags & PA_CONTEXT_NOAUTOSPAWN) && c->conf->autospawn) {
+ char lf[PATH_MAX];
+
+ pa_runtime_path(AUTOSPAWN_LOCK, lf, sizeof(lf));
+ pa_make_secure_parent_dir(lf);
+ assert(c->autospawn_lock_fd <= 0);
+ c->autospawn_lock_fd = pa_lock_lockfile(lf);
+
+ if (api)
+ c->spawn_api = *api;
+ c->do_autospawn = 1;
+ }
+
+ }
+
+ pa_context_set_state(c, PA_CONTEXT_CONNECTING);
+ r = try_next_connection(c);
+
+finish:
+ pa_context_unref(c);
+
+ return r;
+}
+
+void pa_context_disconnect(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ pa_context_set_state(c, PA_CONTEXT_TERMINATED);
+}
+
+pa_context_state_t pa_context_get_state(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ return c->state;
+}
+
+int pa_context_errno(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ return c->error;
+}
+
+void pa_context_set_state_callback(pa_context *c, pa_context_notify_cb_t cb, void *userdata) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ c->state_callback = cb;
+ c->state_userdata = userdata;
+}
+
+int pa_context_is_pending(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY(c,
+ c->state == PA_CONTEXT_CONNECTING ||
+ c->state == PA_CONTEXT_AUTHORIZING ||
+ c->state == PA_CONTEXT_SETTING_NAME ||
+ c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+
+ return (c->pstream && pa_pstream_is_pending(c->pstream)) ||
+ (c->pdispatch && pa_pdispatch_is_pending(c->pdispatch)) ||
+ c->client;
+}
+
+static void set_dispatch_callbacks(pa_operation *o);
+
+static void pdispatch_drain_callback(PA_GCC_UNUSED pa_pdispatch*pd, void *userdata) {
+ set_dispatch_callbacks(userdata);
+}
+
+static void pstream_drain_callback(PA_GCC_UNUSED pa_pstream *s, void *userdata) {
+ set_dispatch_callbacks(userdata);
+}
+
+static void set_dispatch_callbacks(pa_operation *o) {
+ int done = 1;
+
+ assert(o);
+ assert(o->ref >= 1);
+ assert(o->context);
+ assert(o->context->ref >= 1);
+ assert(o->context->state == PA_CONTEXT_READY);
+
+ pa_pstream_set_drain_callback(o->context->pstream, NULL, NULL);
+ pa_pdispatch_set_drain_callback(o->context->pdispatch, NULL, NULL);
+
+ if (pa_pdispatch_is_pending(o->context->pdispatch)) {
+ pa_pdispatch_set_drain_callback(o->context->pdispatch, pdispatch_drain_callback, o);
+ done = 0;
+ }
+
+ if (pa_pstream_is_pending(o->context->pstream)) {
+ pa_pstream_set_drain_callback(o->context->pstream, pstream_drain_callback, o);
+ done = 0;
+ }
+
+ if (done) {
+ if (o->callback) {
+ pa_context_notify_cb_t cb = (pa_context_notify_cb_t) o->callback;
+ cb(o->context, o->userdata);
+ }
+
+ pa_operation_done(o);
+ pa_operation_unref(o);
+ }
+}
+
+pa_operation* pa_context_drain(pa_context *c, pa_context_notify_cb_t cb, void *userdata) {
+ pa_operation *o;
+
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+ PA_CHECK_VALIDITY_RETURN_NULL(c, pa_context_is_pending(c), PA_ERR_BADSTATE);
+
+ o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+ set_dispatch_callbacks(pa_operation_ref(o));
+
+ return o;
+}
+
+void pa_context_simple_ack_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
+ pa_operation *o = userdata;
+ int success = 1;
+
+ assert(pd);
+ assert(o);
+ assert(o->ref >= 1);
+
+ if (!o->context)
+ goto finish;
+
+ if (command != PA_COMMAND_REPLY) {
+ if (pa_context_handle_error(o->context, command, t) < 0)
+ goto finish;
+
+ success = 0;
+ } else if (!pa_tagstruct_eof(t)) {
+ pa_context_fail(o->context, PA_ERR_PROTOCOL);
+ goto finish;
+ }
+
+ if (o->callback) {
+ pa_context_success_cb_t cb = (pa_context_success_cb_t) o->callback;
+ cb(o->context, success, o->userdata);
+ }
+
+finish:
+ pa_operation_done(o);
+ pa_operation_unref(o);
+}
+
+pa_operation* pa_context_exit_daemon(pa_context *c, pa_context_success_cb_t cb, void *userdata) {
+ pa_tagstruct *t;
+ pa_operation *o;
+ uint32_t tag;
+
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+
+ o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+ t = pa_tagstruct_command(c, PA_COMMAND_EXIT, &tag);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+pa_operation* pa_context_send_simple_command(pa_context *c, uint32_t command, pa_pdispatch_cb_t internal_cb, pa_operation_cb_t cb, void *userdata) {
+ pa_tagstruct *t;
+ pa_operation *o;
+ uint32_t tag;
+
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+
+ o = pa_operation_new(c, NULL, cb, userdata);
+
+ t = pa_tagstruct_command(c, command, &tag);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, internal_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+pa_operation* pa_context_set_default_sink(pa_context *c, const char *name, pa_context_success_cb_t cb, void *userdata) {
+ pa_tagstruct *t;
+ pa_operation *o;
+ uint32_t tag;
+
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+
+ o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+ t = pa_tagstruct_command(c, PA_COMMAND_SET_DEFAULT_SINK, &tag);
+ pa_tagstruct_puts(t, name);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+pa_operation* pa_context_set_default_source(pa_context *c, const char *name, pa_context_success_cb_t cb, void *userdata) {
+ pa_tagstruct *t;
+ pa_operation *o;
+ uint32_t tag;
+
+ assert(c);
+ assert(c->ref >= 1);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+
+ o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+ t = pa_tagstruct_command(c, PA_COMMAND_SET_DEFAULT_SOURCE, &tag);
+ pa_tagstruct_puts(t, name);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+int pa_context_is_local(pa_context *c) {
+ assert(c);
+
+ return c->local;
+}
+
+pa_operation* pa_context_set_name(pa_context *c, const char *name, pa_context_success_cb_t cb, void *userdata) {
+ pa_tagstruct *t;
+ pa_operation *o;
+ uint32_t tag;
+
+ assert(c);
+ assert(c->ref >= 1);
+ assert(name);
+
+ PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+
+ o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+ t = pa_tagstruct_command(c, PA_COMMAND_SET_CLIENT_NAME, &tag);
+ pa_tagstruct_puts(t, name);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+const char* pa_get_library_version(void) {
+ return PACKAGE_VERSION;
+}
+
+const char* pa_context_get_server(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ if (!c->server)
+ return NULL;
+
+ if (*c->server == '{') {
+ char *e = strchr(c->server+1, '}');
+ return e ? e+1 : c->server;
+ }
+
+ return c->server;
+}
+
+uint32_t pa_context_get_protocol_version(PA_GCC_UNUSED pa_context *c) {
+ return PA_PROTOCOL_VERSION;
+}
+
+uint32_t pa_context_get_server_protocol_version(pa_context *c) {
+ assert(c);
+ assert(c->ref >= 1);
+
+ return c->version;
+}
+
+pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *tag) {
+ pa_tagstruct *t;
+
+ assert(c);
+ assert(tag);
+
+ t = pa_tagstruct_new(NULL, 0);
+ pa_tagstruct_putu32(t, command);
+ pa_tagstruct_putu32(t, *tag = c->ctag++);
+
+ return t;
+}