code.delx.au - pulseaudio/blob - src/modules/module-protocol-stub.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <string.h>
  27 #include <errno.h>
  28 #include <stdio.h>
  29 #include <assert.h>
  30 #include <unistd.h>
  31 #include <limits.h>
  32
  33 #ifdef HAVE_SYS_SOCKET_H
  34 #include <sys/socket.h>
  35 #endif
  36 #ifdef HAVE_ARPA_INET_H
  37 #include <arpa/inet.h>
  38 #endif
  39 #ifdef HAVE_NETINET_IN_H
  40 #include <netinet/in.h>
  41 #endif
  42
  43 #include "../polypcore/winsock.h"
  44
  45 #include <polypcore/module.h>
  46 #include <polypcore/socket-server.h>
  47 #include <polypcore/socket-util.h>
  48 #include <polypcore/util.h>
  49 #include <polypcore/modargs.h>
  50 #include <polypcore/log.h>
  51 #include <polypcore/native-common.h>
  52 #include <polypcore/xmalloc.h>
  53
  54 #ifdef USE_TCP_SOCKETS
  55 #define SOCKET_DESCRIPTION "(TCP sockets)"
  56 #define SOCKET_USAGE "port=<TCP port number> loopback=<listen on loopback device only?> listen=<address to listen on>"
  57 #else
  58 #define SOCKET_DESCRIPTION "(UNIX sockets)"
  59 #define SOCKET_USAGE "socket=<path to UNIX socket>"
  60 #endif
  61
  62 #if defined(USE_PROTOCOL_SIMPLE)
  63   #include <polypcore/protocol-simple.h>
  64   #define protocol_new pa_protocol_simple_new
  65   #define protocol_free pa_protocol_simple_free
  66   #define TCPWRAP_SERVICE "polypaudio-simple"
  67   #define IPV4_PORT 4711
  68   #define UNIX_SOCKET "simple"
  69   #define MODULE_ARGUMENTS "rate", "format", "channels", "sink", "source", "playback", "record",
  70   #if defined(USE_TCP_SOCKETS)
  71     #include "module-simple-protocol-tcp-symdef.h"
  72   #else
  73     #include "module-simple-protocol-unix-symdef.h"
  74   #endif
  75   PA_MODULE_DESCRIPTION("Simple protocol "SOCKET_DESCRIPTION)
  76   PA_MODULE_USAGE("rate=<sample rate> format=<sample format> channels=<number of channels> sink=<sink to connect to> source=<source to connect to> playback=<enable playback?> record=<enable record?> "SOCKET_USAGE)
  77 #elif defined(USE_PROTOCOL_CLI)
  78   #include <polypcore/protocol-cli.h>
  79   #define protocol_new pa_protocol_cli_new
  80   #define protocol_free pa_protocol_cli_free
  81   #define TCPWRAP_SERVICE "polypaudio-cli"
  82   #define IPV4_PORT 4712
  83   #define UNIX_SOCKET "cli"
  84   #define MODULE_ARGUMENTS
  85   #ifdef USE_TCP_SOCKETS
  86     #include "module-cli-protocol-tcp-symdef.h"
  87   #else
  88     #include "module-cli-protocol-unix-symdef.h"
  89   #endif
  90   PA_MODULE_DESCRIPTION("Command line interface protocol "SOCKET_DESCRIPTION)
  91   PA_MODULE_USAGE(SOCKET_USAGE)
  92 #elif defined(USE_PROTOCOL_HTTP)
  93   #include <polypcore/protocol-http.h>
  94   #define protocol_new pa_protocol_http_new
  95   #define protocol_free pa_protocol_http_free
  96   #define TCPWRAP_SERVICE "polypaudio-http"
  97   #define IPV4_PORT 4714
  98   #define UNIX_SOCKET "http"
  99   #define MODULE_ARGUMENTS
 100   #ifdef USE_TCP_SOCKETS
 101     #include "module-http-protocol-tcp-symdef.h"
 102   #else
 103     #include "module-http-protocol-unix-symdef.h"
 104   #endif
 105   PA_MODULE_DESCRIPTION("HTTP "SOCKET_DESCRIPTION)
 106   PA_MODULE_USAGE(SOCKET_USAGE)
 107 #elif defined(USE_PROTOCOL_NATIVE)
 108   #include <polypcore/protocol-native.h>
 109   #define protocol_new pa_protocol_native_new
 110   #define protocol_free pa_protocol_native_free
 111   #define TCPWRAP_SERVICE "polypaudio-native"
 112   #define IPV4_PORT PA_NATIVE_DEFAULT_PORT
 113   #define UNIX_SOCKET PA_NATIVE_DEFAULT_UNIX_SOCKET
 114   #define MODULE_ARGUMENTS_COMMON "cookie", "auth-anonymous",
 115   #ifdef USE_TCP_SOCKETS
 116     #include "module-native-protocol-tcp-symdef.h"
 117   #else
 118     #include "module-native-protocol-unix-symdef.h"
 119   #endif
 120
 121   #if defined(SCM_CREDENTIALS) && !defined(USE_TCP_SOCKETS)
 122     #define MODULE_ARGUMENTS MODULE_ARGUMENTS_COMMON "auth-group",
 123     #define AUTH_USAGE "auth-group=<local group to allow access>"
 124   #else
 125     #define MODULE_ARGUMENTS MODULE_ARGUMENTS_COMMON
 126     #define AUTH_USAGE
 127   #endif
 128
 129   PA_MODULE_DESCRIPTION("Native protocol "SOCKET_DESCRIPTION)
 130   PA_MODULE_USAGE("auth-anonymous=<don't check for cookies?> cookie=<path to cookie file> "AUTH_USAGE SOCKET_USAGE)
 131 #elif defined(USE_PROTOCOL_ESOUND)
 132   #include <polypcore/protocol-esound.h>
 133   #include <polypcore/esound.h>
 134   #define protocol_new pa_protocol_esound_new
 135   #define protocol_free pa_protocol_esound_free
 136   #define TCPWRAP_SERVICE "esound"
 137   #define IPV4_PORT ESD_DEFAULT_PORT
 138   #define UNIX_SOCKET ESD_UNIX_SOCKET_NAME
 139   #define MODULE_ARGUMENTS "sink", "source", "auth-anonymous", "cookie",
 140   #ifdef USE_TCP_SOCKETS
 141     #include "module-esound-protocol-tcp-symdef.h"
 142   #else
 143     #include "module-esound-protocol-unix-symdef.h"
 144   #endif
 145   PA_MODULE_DESCRIPTION("ESOUND protocol "SOCKET_DESCRIPTION)
 146   PA_MODULE_USAGE("sink=<sink to connect to> source=<source to connect to> auth-anonymous=<don't check for cookies?> cookie=<path to cookie file> "SOCKET_USAGE)
 147 #else
 148   #error "Broken build system"
 149 #endif
 150
 151 PA_MODULE_AUTHOR("Lennart Poettering")
 152 PA_MODULE_VERSION(PACKAGE_VERSION)
 153
 154 static const char* const valid_modargs[] = {
 155     MODULE_ARGUMENTS
 156 #if defined(USE_TCP_SOCKETS)
 157     "port",
 158     "loopback",
 159     "listen",
 160 #else
 161     "socket",
 162 #endif
 163     NULL
 164 };
 165
 166 struct userdata {
 167 #if defined(USE_TCP_SOCKETS)
 168     void *protocol_ipv4;
 169     void *protocol_ipv6;
 170 #else
 171     void *protocol_unix;
 172 #endif
 173 };
 174
 175 int pa__init(pa_core *c, pa_module*m) {
 176     pa_modargs *ma = NULL;
 177     int ret = -1;
 178
 179     struct userdata *u = NULL;
 180
 181 #if defined(USE_TCP_SOCKETS)
 182     pa_socket_server *s_ipv4 = NULL, *s_ipv6 = NULL;
 183     int loopback = 1;
 184     uint32_t port = IPV4_PORT;
 185     const char *listen_on;
 186 #else
 187     pa_socket_server *s;
 188     int r;
 189     const char *v;
 190     char tmp[PATH_MAX];
 191 #endif
 192
 193     assert(c && m);
 194
 195     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 196         pa_log(__FILE__": Failed to parse module arguments");
 197         goto finish;
 198     }
 199
 200 #if defined(USE_TCP_SOCKETS)
 201     if (pa_modargs_get_value_boolean(ma, "loopback", &loopback) < 0) {
 202         pa_log(__FILE__": loopback= expects a boolean argument.");
 203         goto fail;
 204     }
 205
 206     if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
 207         pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.");
 208         goto fail;
 209     }
 210
 211     listen_on = pa_modargs_get_value(ma, "listen", NULL);
 212
 213     if (listen_on) {
 214         s_ipv4 = pa_socket_server_new_ipv4_string(c->mainloop, listen_on, port, TCPWRAP_SERVICE);
 215         s_ipv6 = pa_socket_server_new_ipv6_string(c->mainloop, listen_on, port, TCPWRAP_SERVICE);
 216     } else if (loopback) {
 217         s_ipv4 = pa_socket_server_new_ipv4_loopback(c->mainloop, port, TCPWRAP_SERVICE);
 218         s_ipv6 = pa_socket_server_new_ipv6_loopback(c->mainloop, port, TCPWRAP_SERVICE);
 219     } else {
 220         s_ipv4 = pa_socket_server_new_ipv4_any(c->mainloop, port, TCPWRAP_SERVICE);
 221         s_ipv6 = pa_socket_server_new_ipv6_any(c->mainloop, port, TCPWRAP_SERVICE);
 222     }
 223
 224     if (!s_ipv4 && !s_ipv6)
 225         goto fail;
 226
 227 #else
 228     v = pa_modargs_get_value(ma, "socket", UNIX_SOCKET);
 229     assert(v);
 230
 231     pa_runtime_path(v, tmp, sizeof(tmp));
 232
 233     if (pa_make_secure_parent_dir(tmp) < 0) {
 234         pa_log(__FILE__": Failed to create secure socket directory.");
 235         goto fail;
 236     }
 237
 238     if ((r = pa_unix_socket_remove_stale(tmp)) < 0) {
 239         pa_log(__FILE__": Failed to remove stale UNIX socket '%s': %s", tmp, strerror(errno));
 240         goto fail;
 241     }
 242
 243     if (r)
 244         pa_log(__FILE__": Removed stale UNIX socket '%s'.", tmp);
 245
 246     if (!(s = pa_socket_server_new_unix(c->mainloop, tmp)))
 247         goto fail;
 248 #endif
 249
 250     u = pa_xnew0(struct userdata, 1);
 251
 252 #if defined(USE_TCP_SOCKETS)
 253     if (s_ipv4)
 254         if (!(u->protocol_ipv4 = protocol_new(c, s_ipv4, m, ma)))
 255             pa_socket_server_unref(s_ipv4);
 256
 257     if (s_ipv6)
 258         if (!(u->protocol_ipv6 = protocol_new(c, s_ipv6, m, ma)))
 259             pa_socket_server_unref(s_ipv6);
 260
 261     if (!u->protocol_ipv4 && !u->protocol_ipv6)
 262         goto fail;
 263 #else
 264     if (!(u->protocol_unix = protocol_new(c, s, m, ma)))
 265         goto fail;
 266 #endif
 267
 268     m->userdata = u;
 269
 270     ret = 0;
 271
 272 finish:
 273     if (ma)
 274         pa_modargs_free(ma);
 275
 276     return ret;
 277
 278 fail:
 279     if (u) {
 280 #if defined(USE_TCP_SOCKETS)
 281         if (u->protocol_ipv4)
 282             protocol_free(u->protocol_ipv4);
 283         if (u->protocol_ipv6)
 284             protocol_free(u->protocol_ipv6);
 285 #else
 286         if (u->protocol_unix)
 287             protocol_free(u->protocol_unix);
 288 #endif
 289         pa_xfree(u);
 290     } else {
 291 #if defined(USE_TCP_SOCKETS)
 292         if (s_ipv4)
 293             pa_socket_server_unref(s_ipv4);
 294         if (s_ipv6)
 295             pa_socket_server_unref(s_ipv6);
 296 #else
 297         if (s)
 298             pa_socket_server_unref(s);
 299 #endif
 300     }
 301
 302     goto finish;
 303 }
 304
 305 void pa__done(pa_core *c, pa_module*m) {
 306     struct userdata *u;
 307     assert(c && m);
 308
 309 #if defined(USE_PROTOCOL_ESOUND) && !defined(USE_TCP_SOCKETS)
 310     if (remove(ESD_UNIX_SOCKET_NAME) != 0)
 311         pa_log("%s: Failed to remove %s : %s.", __FILE__, ESD_UNIX_SOCKET_NAME, strerror (errno));
 312     if (remove(ESD_UNIX_SOCKET_DIR) != 0)
 313         pa_log("%s: Failed to remove %s : %s.", __FILE__, ESD_UNIX_SOCKET_DIR, strerror (errno));
 314 #endif
 315
 316     u = m->userdata;
 317     assert(u);
 318
 319 #if defined(USE_TCP_SOCKETS)
 320     if (u->protocol_ipv4)
 321         protocol_free(u->protocol_ipv4);
 322     if (u->protocol_ipv6)
 323         protocol_free(u->protocol_ipv6);
 324 #else
 325     if (u->protocol_unix)
 326         protocol_free(u->protocol_unix);
 327 #endif
 328
 329     pa_xfree(u);
 330 }