diff options
Diffstat (limited to 'polyp/module-tunnel.c')
| -rw-r--r-- | polyp/module-tunnel.c | 688 |
1 files changed, 0 insertions, 688 deletions
diff --git a/polyp/module-tunnel.c b/polyp/module-tunnel.c deleted file mode 100644 index c088dae0..00000000 --- a/polyp/module-tunnel.c +++ /dev/null @@ -1,688 +0,0 @@ -/* $Id$ */ - -/*** - This file is part of polypaudio. - - polypaudio is free software; you can redistribute it and/or modify - it under the terms of the GNU Lesser 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 Lesser 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 <unistd.h> -#include <assert.h> -#include <string.h> -#include <errno.h> -#include <sys/types.h> -#include <stdio.h> -#include <stdlib.h> - -#include "module.h" -#include "util.h" -#include "modargs.h" -#include "log.h" -#include "subscribe.h" -#include "xmalloc.h" -#include "sink-input.h" -#include "pdispatch.h" -#include "pstream.h" -#include "pstream-util.h" -#include "authkey.h" -#include "socket-client.h" -#include "socket-util.h" -#include "authkey-prop.h" - -#ifdef TUNNEL_SINK -#include "module-tunnel-sink-symdef.h" -PA_MODULE_DESCRIPTION("Tunnel module for sinks") -PA_MODULE_USAGE("server=<address> sink=<remote sink name> cookie=<filename> format=<sample format> channels=<number of channels> rate=<sample rate> sink_name=<name for the local sink>") -#else -#include "module-tunnel-source-symdef.h" -PA_MODULE_DESCRIPTION("Tunnel module for sources") -PA_MODULE_USAGE("server=<address> source=<remote source name> cookie=<filename> format=<sample format> channels=<number of channels> rate=<sample rate> source_name=<name for the local source>") -#endif - -PA_MODULE_AUTHOR("Lennart Poettering") -PA_MODULE_VERSION(PACKAGE_VERSION) - -#define DEFAULT_SINK_NAME "tunnel" -#define DEFAULT_SOURCE_NAME "tunnel" - -#define DEFAULT_TLENGTH (44100*2*2/10) //(10240*8) -#define DEFAULT_MAXLENGTH ((DEFAULT_TLENGTH*3)/2) -#define DEFAULT_MINREQ 512 -#define DEFAULT_PREBUF (DEFAULT_TLENGTH-DEFAULT_MINREQ) -#define DEFAULT_FRAGSIZE 1024 - -#define DEFAULT_TIMEOUT 5 - -#define LATENCY_INTERVAL 10 - -static const char* const valid_modargs[] = { - "server", - "cookie", - "format", - "channels", - "rate", -#ifdef TUNNEL_SINK - "sink_name", - "sink", -#else - "source_name", - "source", -#endif - NULL, -}; - -static void command_stream_killed(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata); - -#ifdef TUNNEL_SINK -static void command_request(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata); -#endif - -static const pa_pdispatch_callback command_table[PA_COMMAND_MAX] = { -#ifdef TUNNEL_SINK - [PA_COMMAND_REQUEST] = command_request, -#endif - [PA_COMMAND_PLAYBACK_STREAM_KILLED] = command_stream_killed, - [PA_COMMAND_RECORD_STREAM_KILLED] = command_stream_killed -}; - -struct userdata { - pa_socket_client *client; - pa_pstream *pstream; - pa_pdispatch *pdispatch; - - char *server_name; -#ifdef TUNNEL_SINK - char *sink_name; - pa_sink *sink; - uint32_t requested_bytes; -#else - char *source_name; - pa_source *source; -#endif - - pa_module *module; - pa_core *core; - - uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH]; - - uint32_t ctag; - uint32_t device_index; - uint32_t channel; - - pa_usec_t host_latency; - - pa_time_event *time_event; - - int auth_cookie_in_property; -}; - -static void close_stuff(struct userdata *u) { - assert(u); - - if (u->pstream) { - pa_pstream_close(u->pstream); - pa_pstream_unref(u->pstream); - u->pstream = NULL; - } - - if (u->pdispatch) { - pa_pdispatch_unref(u->pdispatch); - u->pdispatch = NULL; - } - - if (u->client) { - pa_socket_client_unref(u->client); - u->client = NULL; - } - -#ifdef TUNNEL_SINK - if (u->sink) { - pa_sink_disconnect(u->sink); - pa_sink_unref(u->sink); - u->sink = NULL; - } -#else - if (u->source) { - pa_source_disconnect(u->source); - pa_source_unref(u->source); - u->source = NULL; - } -#endif - - if (u->time_event) { - u->core->mainloop->time_free(u->time_event); - u->time_event = NULL; - } -} - -static void die(struct userdata *u) { - assert(u); - close_stuff(u); - pa_module_unload_request(u->module); -} - -static void command_stream_killed(pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) { - struct userdata *u = userdata; - assert(pd && t && u && u->pdispatch == pd); - - pa_log(__FILE__": stream killed\n"); - die(u); -} - -#ifdef TUNNEL_SINK -static void send_prebuf_request(struct userdata *u) { - pa_tagstruct *t; - - t = pa_tagstruct_new(NULL, 0); - pa_tagstruct_putu32(t, PA_COMMAND_PREBUF_PLAYBACK_STREAM); - pa_tagstruct_putu32(t, u->ctag++); - pa_tagstruct_putu32(t, u->channel); - pa_pstream_send_tagstruct(u->pstream, t); -} - -static void send_bytes(struct userdata *u) { - assert(u); - - if (!u->pstream) - return; - - while (u->requested_bytes > 0) { - pa_memchunk chunk; - if (pa_sink_render(u->sink, u->requested_bytes, &chunk) < 0) { - - - if (u->requested_bytes >= DEFAULT_TLENGTH-DEFAULT_PREBUF) - send_prebuf_request(u); - - return; - } - - pa_pstream_send_memblock(u->pstream, u->channel, 0, &chunk); - pa_memblock_unref(chunk.memblock); - - if (chunk.length > u->requested_bytes) - u->requested_bytes = 0; - else - u->requested_bytes -= chunk.length; - } -} - -static void command_request(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) { - struct userdata *u = userdata; - uint32_t bytes, channel; - assert(pd && command == PA_COMMAND_REQUEST && t && u && u->pdispatch == pd); - - if (pa_tagstruct_getu32(t, &channel) < 0 || - pa_tagstruct_getu32(t, &bytes) < 0 || - !pa_tagstruct_eof(t)) { - pa_log(__FILE__": invalid protocol reply\n"); - die(u); - return; - } - - if (channel != u->channel) { - pa_log(__FILE__": recieved data for invalid channel\n"); - die(u); - return; - } - - u->requested_bytes += bytes; - send_bytes(u); -} - -#endif - -static void stream_get_latency_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) { - struct userdata *u = userdata; - pa_usec_t buffer_usec, sink_usec, source_usec, transport_usec; - int playing; - uint32_t queue_length; - uint64_t counter; - struct timeval local, remote, now; - assert(pd && u); - - if (command != PA_COMMAND_REPLY) { - if (command == PA_COMMAND_ERROR) - pa_log(__FILE__": failed to get latency.\n"); - else - pa_log(__FILE__": protocol error.\n"); - die(u); - return; - } - - if (pa_tagstruct_get_usec(t, &buffer_usec) < 0 || - pa_tagstruct_get_usec(t, &sink_usec) < 0 || - pa_tagstruct_get_usec(t, &source_usec) < 0 || - pa_tagstruct_get_boolean(t, &playing) < 0 || - pa_tagstruct_getu32(t, &queue_length) < 0 || - pa_tagstruct_get_timeval(t, &local) < 0 || - pa_tagstruct_get_timeval(t, &remote) < 0 || - pa_tagstruct_getu64(t, &counter) < 0 || - !pa_tagstruct_eof(t)) { - pa_log(__FILE__": invalid reply.\n"); - die(u); - return; - } - - pa_gettimeofday(&now); - - if (pa_timeval_cmp(&local, &remote) < 0 && pa_timeval_cmp(&remote, &now)) { - /* local and remote seem to have synchronized clocks */ -#ifdef TUNNEL_SINK - transport_usec = pa_timeval_diff(&remote, &local); -#else - transport_usec = pa_timeval_diff(&now, &remote); -#endif - } else - transport_usec = pa_timeval_diff(&now, &local)/2; - -#ifdef TUNNEL_SINK - u->host_latency = sink_usec + transport_usec; -#else - u->host_latency = source_usec + transport_usec; - if (u->host_latency > sink_usec) - u->host_latency -= sink_usec; - else - u->host_latency = 0; -#endif - -/* pa_log(__FILE__": estimated host latency: %0.0f usec\n", (double) u->host_latency); */ -} - -static void request_latency(struct userdata *u) { - pa_tagstruct *t; - struct timeval now; - uint32_t tag; - assert(u); - - t = pa_tagstruct_new(NULL, 0); -#ifdef TUNNEL_SINK - pa_tagstruct_putu32(t, PA_COMMAND_GET_PLAYBACK_LATENCY); -#else - pa_tagstruct_putu32(t, PA_COMMAND_GET_RECORD_LATENCY); -#endif - pa_tagstruct_putu32(t, tag = u->ctag++); - pa_tagstruct_putu32(t, u->channel); - - pa_gettimeofday(&now); - pa_tagstruct_put_timeval(t, &now); - pa_tagstruct_putu64(t, 0); - - pa_pstream_send_tagstruct(u->pstream, t); - pa_pdispatch_register_reply(u->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_latency_callback, u); -} - -static void create_stream_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) { - struct userdata *u = userdata; - assert(pd && u && u->pdispatch == pd); - - if (command != PA_COMMAND_REPLY) { - if (command == PA_COMMAND_ERROR) - pa_log(__FILE__": failed to create stream.\n"); - else - pa_log(__FILE__": protocol error.\n"); - die(u); - return; - } - - if (pa_tagstruct_getu32(t, &u->channel) < 0 || - pa_tagstruct_getu32(t, &u->device_index) < 0 || -#ifdef TUNNEL_SINK - pa_tagstruct_getu32(t, &u->requested_bytes) < 0 || -#endif - !pa_tagstruct_eof(t)) { - pa_log(__FILE__": invalid reply.\n"); - die(u); - return; - } - - request_latency(u); -#ifdef TUNNEL_SINK - send_bytes(u); -#endif -} - -static void setup_complete_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) { - struct userdata *u = userdata; - pa_tagstruct *reply; - char name[256], un[128], hn[128]; - assert(pd && u && u->pdispatch == pd); - - if (command != PA_COMMAND_REPLY || !pa_tagstruct_eof(t)) { - if (command == PA_COMMAND_ERROR) - pa_log(__FILE__": failed to authenticate\n"); - else - pa_log(__FILE__": protocol error.\n"); - die(u); - return; - } -#ifdef TUNNEL_SINK - snprintf(name, sizeof(name), "Tunnel from host '%s', user '%s', sink '%s'", - pa_get_host_name(hn, sizeof(hn)), - pa_get_user_name(un, sizeof(un)), - u->sink->name); -#else - snprintf(name, sizeof(name), "Tunnel from host '%s', user '%s', source '%s'", - pa_get_host_name(hn, sizeof(hn)), - pa_get_user_name(un, sizeof(un)), - u->source->name); -#endif - - reply = pa_tagstruct_new(NULL, 0); - pa_tagstruct_putu32(reply, PA_COMMAND_SET_CLIENT_NAME); - pa_tagstruct_putu32(reply, tag = u->ctag++); - pa_tagstruct_puts(reply, name); - pa_pstream_send_tagstruct(u->pstream, reply); - /* We ignore the server's reply here */ - - reply = pa_tagstruct_new(NULL, 0); -#ifdef TUNNEL_SINK - pa_tagstruct_putu32(reply, PA_COMMAND_CREATE_PLAYBACK_STREAM); - pa_tagstruct_putu32(reply, tag = u->ctag++); - pa_tagstruct_puts(reply, name); - pa_tagstruct_put_sample_spec(reply, &u->sink->sample_spec); - pa_tagstruct_putu32(reply, PA_INVALID_INDEX); - pa_tagstruct_puts(reply, u->sink_name); - pa_tagstruct_putu32(reply, DEFAULT_MAXLENGTH); - pa_tagstruct_put_boolean(reply, 0); - pa_tagstruct_putu32(reply, DEFAULT_TLENGTH); - pa_tagstruct_putu32(reply, DEFAULT_PREBUF); - pa_tagstruct_putu32(reply, DEFAULT_MINREQ); - pa_tagstruct_putu32(reply, PA_VOLUME_NORM); -#else - pa_tagstruct_putu32(reply, PA_COMMAND_CREATE_RECORD_STREAM); - pa_tagstruct_putu32(reply, tag = u->ctag++); - pa_tagstruct_puts(reply, name); - pa_tagstruct_put_sample_spec(reply, &u->source->sample_spec); - pa_tagstruct_putu32(reply, PA_INVALID_INDEX); - pa_tagstruct_puts(reply, u->source_name); - pa_tagstruct_putu32(reply, DEFAULT_MAXLENGTH); - pa_tagstruct_put_boolean(reply, 0); - pa_tagstruct_putu32(reply, DEFAULT_FRAGSIZE); -#endif - - pa_pstream_send_tagstruct(u->pstream, reply); - pa_pdispatch_register_reply(u->pdispatch, tag, DEFAULT_TIMEOUT, create_stream_callback, u); -} - -static void pstream_die_callback(pa_pstream *p, void *userdata) { - struct userdata *u = userdata; - assert(p && u); - - pa_log(__FILE__": stream died.\n"); - die(u); -} - - -static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, void *userdata) { - struct userdata *u = userdata; - assert(p && packet && u); - - if (pa_pdispatch_run(u->pdispatch, packet, u) < 0) { - pa_log(__FILE__": invalid packet\n"); - die(u); - } -} - -#ifndef TUNNEL_SINK -static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, uint32_t delta, const pa_memchunk *chunk, void *userdata) { - struct userdata *u = userdata; - assert(p && chunk && u); - - if (channel != u->channel) { - pa_log(__FILE__": recieved memory block on bad channel.\n"); - die(u); - return; - } - - pa_source_post(u->source, chunk); -} -#endif - -static void on_connection(pa_socket_client *sc, pa_iochannel *io, void *userdata) { - struct userdata *u = userdata; - pa_tagstruct *t; - uint32_t tag; - assert(sc && u && u->client == sc); - - pa_socket_client_unref(u->client); - u->client = NULL; - - if (!io) { - pa_log(__FILE__": connection failed.\n"); - pa_module_unload_request(u->module); - return; - } - - u->pstream = pa_pstream_new(u->core->mainloop, io, u->core->memblock_stat); - u->pdispatch = pa_pdispatch_new(u->core->mainloop, command_table, PA_COMMAND_MAX); - - pa_pstream_set_die_callback(u->pstream, pstream_die_callback, u); - pa_pstream_set_recieve_packet_callback(u->pstream, pstream_packet_callback, u); -#ifndef TUNNEL_SINK - pa_pstream_set_recieve_memblock_callback(u->pstream, pstream_memblock_callback, u); -#endif - - t = pa_tagstruct_new(NULL, 0); - pa_tagstruct_putu32(t, PA_COMMAND_AUTH); - pa_tagstruct_putu32(t, tag = u->ctag++); - pa_tagstruct_put_arbitrary(t, u->auth_cookie, sizeof(u->auth_cookie)); - pa_pstream_send_tagstruct(u->pstream, t); - pa_pdispatch_register_reply(u->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, u); - -} - -#ifdef TUNNEL_SINK -static void sink_notify(pa_sink*sink) { - struct userdata *u; - assert(sink && sink->userdata); - u = sink->userdata; - - send_bytes(u); -} - -static pa_usec_t sink_get_latency(pa_sink *sink) { - struct userdata *u; - uint32_t l; - pa_usec_t usec = 0; - assert(sink && sink->userdata); - u = sink->userdata; - - l = DEFAULT_TLENGTH; - - if (l > u->requested_bytes) { - l -= u->requested_bytes; - usec += pa_bytes_to_usec(l, &u->sink->sample_spec); - } - - usec += u->host_latency; - - return usec; -} -#else -static pa_usec_t source_get_latency(pa_source *source) { - struct userdata *u; - assert(source && source->userdata); - u = source->userdata; - - return u->host_latency; -} -#endif - -static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) { - struct userdata *u = userdata; - struct timeval ntv; - assert(m && e && u); - - request_latency(u); - - pa_gettimeofday(&ntv); - ntv.tv_sec += LATENCY_INTERVAL; - m->time_restart(e, &ntv); -} - -static int load_key(struct userdata *u, const char*fn) { - assert(u); - - u->auth_cookie_in_property = 0; - - if (!fn && pa_authkey_prop_get(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME, u->auth_cookie, sizeof(u->auth_cookie)) >= 0) { - pa_log_debug(__FILE__": using already loaded auth cookie.\n"); - pa_authkey_prop_ref(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME); - u->auth_cookie_in_property = 1; - return 0; - } - - if (!fn) - fn = PA_NATIVE_COOKIE_FILE; - - if (pa_authkey_load_auto(fn, u->auth_cookie, sizeof(u->auth_cookie)) < 0) - return -1; - - pa_log_debug(__FILE__": loading cookie from disk.\n"); - - if (pa_authkey_prop_put(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME, u->auth_cookie, sizeof(u->auth_cookie)) >= 0) - u->auth_cookie_in_property = 1; - - return 0; -} - -int pa__init(pa_core *c, pa_module*m) { - pa_modargs *ma = NULL; - struct userdata *u = NULL; - pa_sample_spec ss; - struct timeval ntv; - assert(c && m); - - if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { - pa_log(__FILE__": failed to parse module arguments\n"); - goto fail; - } - - u = pa_xmalloc(sizeof(struct userdata)); - m->userdata = u; - u->module = m; - u->core = c; - u->client = NULL; - u->pdispatch = NULL; - u->pstream = NULL; - u->server_name = NULL; -#ifdef TUNNEL_SINK - u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));; - u->sink = NULL; - u->requested_bytes = 0; -#else - u->source_name = pa_xstrdup(pa_modargs_get_value(ma, "source", NULL));; - u->source = NULL; -#endif - u->ctag = 1; - u->device_index = u->channel = PA_INVALID_INDEX; - u->host_latency = 0; - u->auth_cookie_in_property = 0; - u->time_event = NULL; - - if (load_key(u, pa_modargs_get_value(ma, "cookie", NULL)) < 0) - goto fail; - - if (!(u->server_name = pa_xstrdup(pa_modargs_get_value(ma, "server", NULL)))) { - pa_log(__FILE__": no server specified.\n"); - goto fail; - } - - ss = c->default_sample_spec; - if (pa_modargs_get_sample_spec(ma, &ss) < 0) { - pa_log(__FILE__": invalid sample format specification\n"); - goto fail; - } - - if (!(u->client = pa_socket_client_new_string(c->mainloop, u->server_name, PA_NATIVE_DEFAULT_PORT))) { - pa_log(__FILE__": failed to connect to server '%s'\n", u->server_name); - goto fail; - } - - if (!u->client) - goto fail; - - pa_socket_client_set_callback(u->client, on_connection, u); - -#ifdef TUNNEL_SINK - if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, NULL))) { - pa_log(__FILE__": failed to create sink.\n"); - goto fail; - } - - u->sink->notify = sink_notify; - u->sink->get_latency = sink_get_latency; - u->sink->userdata = u; - u->sink->description = pa_sprintf_malloc("Tunnel to '%s%s%s'", u->sink_name ? u->sink_name : "", u->sink_name ? "@" : "", u->server_name); - - pa_sink_set_owner(u->sink, m); -#else - if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL))) { - pa_log(__FILE__": failed to create source.\n"); - goto fail; - } - - u->source->get_latency = source_get_latency; - u->source->userdata = u; - u->source->description = pa_sprintf_malloc("Tunnel to '%s%s%s'", u->source_name ? u->source_name : "", u->source_name ? "@" : "", u->server_name); - - pa_source_set_owner(u->source, m); -#endif - - pa_gettimeofday(&ntv); - ntv.tv_sec += LATENCY_INTERVAL; - u->time_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, u); - - pa_modargs_free(ma); - - return 0; - -fail: - pa__done(c, m); - - if (ma) - pa_modargs_free(ma); - return -1; -} - -void pa__done(pa_core *c, pa_module*m) { - struct userdata* u; - assert(c && m); - - if (!(u = m->userdata)) - return; - - close_stuff(u); - - if (u->auth_cookie_in_property) - pa_authkey_prop_unref(c, PA_NATIVE_COOKIE_PROPERTY_NAME); - -#ifdef TUNNEL_SINK - pa_xfree(u->sink_name); -#else - pa_xfree(u->source_name); -#endif - pa_xfree(u->server_name); - - pa_xfree(u); -} - - |