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 <polyp/xmalloc.h>
  46
  47 #include <polypcore/module.h>
  48 #include <polypcore/socket-server.h>
  49 #include <polypcore/socket-util.h>
  50 #include <polypcore/util.h>
  51 #include <polypcore/modargs.h>
  52 #include <polypcore/log.h>
  53 #include <polypcore/native-common.h>
  54
  55 #ifdef USE_TCP_SOCKETS
  56 #define SOCKET_DESCRIPTION "(TCP sockets)"
  57 #define SOCKET_USAGE "port=<TCP port number> loopback=<listen on loopback device only?> listen=<address to listen on>"
  58 #else
  59 #define SOCKET_DESCRIPTION "(UNIX sockets)"
  60 #define SOCKET_USAGE "socket=<path to UNIX socket>"
  61 #endif
  62
  63 #if defined(USE_PROTOCOL_SIMPLE)
  64   #include <polypcore/protocol-simple.h>
  65   #define protocol_new pa_protocol_simple_new
  66   #define protocol_free pa_protocol_simple_free
  67   #define TCPWRAP_SERVICE "polypaudio-simple"
  68   #define IPV4_PORT 4711
  69   #define UNIX_SOCKET "simple"
  70   #define MODULE_ARGUMENTS "rate", "format", "channels", "sink", "source", "playback", "record",
  71   #if defined(USE_TCP_SOCKETS)
  72     #include "module-simple-protocol-tcp-symdef.h"
  73   #else
  74     #include "module-simple-protocol-unix-symdef.h"
  75   #endif
  76   PA_MODULE_DESCRIPTION("Simple protocol "SOCKET_DESCRIPTION)
  77   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)
  78 #elif defined(USE_PROTOCOL_CLI)
  79   #include <polypcore/protocol-cli.h>
  80   #define protocol_new pa_protocol_cli_new
  81   #define protocol_free pa_protocol_cli_free
  82   #define TCPWRAP_SERVICE "polypaudio-cli"
  83   #define IPV4_PORT 4712
  84   #define UNIX_SOCKET "cli"
  85   #define MODULE_ARGUMENTS
  86   #ifdef USE_TCP_SOCKETS
  87     #include "module-cli-protocol-tcp-symdef.h"
  88   #else
  89     #include "module-cli-protocol-unix-symdef.h"
  90   #endif
  91   PA_MODULE_DESCRIPTION("Command line interface protocol "SOCKET_DESCRIPTION)
  92   PA_MODULE_USAGE(SOCKET_USAGE)
  93 #elif defined(USE_PROTOCOL_HTTP)
  94   #include <polypcore/protocol-http.h>
  95   #define protocol_new pa_protocol_http_new
  96   #define protocol_free pa_protocol_http_free
  97   #define TCPWRAP_SERVICE "polypaudio-http"
  98   #define IPV4_PORT 4714
  99   #define UNIX_SOCKET "http"
 100   #define MODULE_ARGUMENTS
 101   #ifdef USE_TCP_SOCKETS
 102     #include "module-http-protocol-tcp-symdef.h"
 103   #else
 104     #include "module-http-protocol-unix-symdef.h"
 105   #endif
 106   PA_MODULE_DESCRIPTION("HTTP "SOCKET_DESCRIPTION)
 107   PA_MODULE_USAGE(SOCKET_USAGE)
 108 #elif defined(USE_PROTOCOL_NATIVE)
 109   #include <polypcore/protocol-native.h>
 110   #define protocol_new pa_protocol_native_new
 111   #define protocol_free pa_protocol_native_free
 112   #define TCPWRAP_SERVICE "polypaudio-native"
 113   #define IPV4_PORT PA_NATIVE_DEFAULT_PORT
 114   #define UNIX_SOCKET PA_NATIVE_DEFAULT_UNIX_SOCKET
 115   #define MODULE_ARGUMENTS_COMMON "cookie", "auth-anonymous",
 116   #ifdef USE_TCP_SOCKETS
 117     #include "module-native-protocol-tcp-symdef.h"
 118   #else
 119     #include "module-native-protocol-unix-symdef.h"
 120   #endif
 121
 122   #if defined(SCM_CREDENTIALS) && !defined(USE_TCP_SOCKETS)
 123     #define MODULE_ARGUMENTS MODULE_ARGUMENTS_COMMON "auth-group",
 124     #define AUTH_USAGE "auth-group=<local group to allow access>"
 125   #else
 126     #define MODULE_ARGUMENTS MODULE_ARGUMENTS_COMMON
 127     #define AUTH_USAGE
 128   #endif
 129
 130   PA_MODULE_DESCRIPTION("Native protocol "SOCKET_DESCRIPTION)
 131   PA_MODULE_USAGE("auth-anonymous=<don't check for cookies?> cookie=<path to cookie file> "AUTH_USAGE SOCKET_USAGE)
 132 #elif defined(USE_PROTOCOL_ESOUND)
 133   #include <polypcore/protocol-esound.h>
 134   #include <polypcore/esound.h>
 135   #define protocol_new pa_protocol_esound_new
 136   #define protocol_free pa_protocol_esound_free
 137   #define TCPWRAP_SERVICE "esound"
 138   #define IPV4_PORT ESD_DEFAULT_PORT
 139   #define UNIX_SOCKET ESD_UNIX_SOCKET_NAME
 140   #define MODULE_ARGUMENTS "sink", "source", "auth-anonymous", "cookie",
 141   #ifdef USE_TCP_SOCKETS
 142     #include "module-esound-protocol-tcp-symdef.h"
 143   #else
 144     #include "module-esound-protocol-unix-symdef.h"
 145   #endif
 146   PA_MODULE_DESCRIPTION("ESOUND protocol "SOCKET_DESCRIPTION)
 147   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)
 148 #else
 149   #error "Broken build system"
 150 #endif
 151
 152 PA_MODULE_AUTHOR("Lennart Poettering")
 153 PA_MODULE_VERSION(PACKAGE_VERSION)
 154
 155 static const char* const valid_modargs[] = {
 156     MODULE_ARGUMENTS
 157 #if defined(USE_TCP_SOCKETS)
 158     "port",
 159     "loopback",
 160     "listen",
 161 #else
 162     "socket",
 163 #endif
 164     NULL
 165 };
 166
 167 struct userdata {
 168 #if defined(USE_TCP_SOCKETS)
 169     void *protocol_ipv4;
 170     void *protocol_ipv6;
 171 #else
 172     void *protocol_unix;
 173     char *socket_path;
 174 #endif
 175 };
 176
 177 int pa__init(pa_core *c, pa_module*m) {
 178     pa_modargs *ma = NULL;
 179     int ret = -1;
 180
 181     struct userdata *u = NULL;
 182
 183 #if defined(USE_TCP_SOCKETS)
 184     pa_socket_server *s_ipv4 = NULL, *s_ipv6 = NULL;
 185     int loopback = 1;
 186     uint32_t port = IPV4_PORT;
 187     const char *listen_on;
 188 #else
 189     pa_socket_server *s;
 190     int r;
 191     const char *v;
 192     char tmp[PATH_MAX];
 193 #endif
 194
 195     assert(c && m);
 196
 197     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 198         pa_log(__FILE__": Failed to parse module arguments");
 199         goto finish;
 200     }
 201
 202     u = pa_xnew0(struct userdata, 1);
 203
 204 #if defined(USE_TCP_SOCKETS)
 205     if (pa_modargs_get_value_boolean(ma, "loopback", &loopback) < 0) {
 206         pa_log(__FILE__": loopback= expects a boolean argument.");
 207         goto fail;
 208     }
 209
 210     if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
 211         pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.");
 212         goto fail;
 213     }
 214
 215     listen_on = pa_modargs_get_value(ma, "listen", NULL);
 216
 217     if (listen_on) {
 218         s_ipv6 = pa_socket_server_new_ipv6_string(c->mainloop, listen_on, port, TCPWRAP_SERVICE);
 219         s_ipv4 = pa_socket_server_new_ipv4_string(c->mainloop, listen_on, port, TCPWRAP_SERVICE);
 220     } else if (loopback) {
 221         s_ipv6 = pa_socket_server_new_ipv6_loopback(c->mainloop, port, TCPWRAP_SERVICE);
 222         s_ipv4 = pa_socket_server_new_ipv4_loopback(c->mainloop, port, TCPWRAP_SERVICE);
 223     } else {
 224         s_ipv6 = pa_socket_server_new_ipv6_any(c->mainloop, port, TCPWRAP_SERVICE);
 225         s_ipv4 = pa_socket_server_new_ipv4_any(c->mainloop, port, TCPWRAP_SERVICE);
 226     }
 227
 228     if (!s_ipv4 && !s_ipv6)
 229         goto fail;
 230
 231     if (s_ipv4)
 232         if (!(u->protocol_ipv4 = protocol_new(c, s_ipv4, m, ma)))
 233             pa_socket_server_unref(s_ipv4);
 234
 235     if (s_ipv6)
 236         if (!(u->protocol_ipv6 = protocol_new(c, s_ipv6, m, ma)))
 237             pa_socket_server_unref(s_ipv6);
 238
 239     if (!u->protocol_ipv4 && !u->protocol_ipv6)
 240         goto fail;
 241
 242 #else
 243     v = pa_modargs_get_value(ma, "socket", UNIX_SOCKET);
 244     pa_runtime_path(v, tmp, sizeof(tmp));
 245     u->socket_path = pa_xstrdup(tmp);
 246
 247     if (pa_make_secure_parent_dir(tmp) < 0) {
 248         pa_log(__FILE__": Failed to create secure socket directory.");
 249         goto fail;
 250     }
 251
 252     if ((r = pa_unix_socket_remove_stale(tmp)) < 0) {
 253         pa_log(__FILE__": Failed to remove stale UNIX socket '%s': %s", tmp, strerror(errno));
 254         goto fail;
 255     }
 256
 257     if (r)
 258         pa_log(__FILE__": Removed stale UNIX socket '%s'.", tmp);
 259
 260     if (!(s = pa_socket_server_new_unix(c->mainloop, tmp)))
 261         goto fail;
 262
 263     if (!(u->protocol_unix = protocol_new(c, s, m, ma)))
 264         goto fail;
 265
 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
 289         if (u->socket_path)
 290             pa_xfree(u->socket_path);
 291 #endif
 292
 293         pa_xfree(u);
 294     } else {
 295 #if defined(USE_TCP_SOCKETS)
 296         if (s_ipv4)
 297             pa_socket_server_unref(s_ipv4);
 298         if (s_ipv6)
 299             pa_socket_server_unref(s_ipv6);
 300 #else
 301         if (s)
 302             pa_socket_server_unref(s);
 303 #endif
 304     }
 305
 306     goto finish;
 307 }
 308
 309 void pa__done(pa_core *c, pa_module*m) {
 310     struct userdata *u;
 311
 312     assert(c);
 313     assert(m);
 314
 315     u = m->userdata;
 316
 317 #if defined(USE_TCP_SOCKETS)
 318     if (u->protocol_ipv4)
 319         protocol_free(u->protocol_ipv4);
 320     if (u->protocol_ipv6)
 321         protocol_free(u->protocol_ipv6);
 322 #else
 323     if (u->protocol_unix)
 324         protocol_free(u->protocol_unix);
 325
 326     if (u->socket_path) {
 327         char *p;
 328
 329         if ((p = pa_parent_dir(u->socket_path))) {
 330             if (rmdir(p) < 0 && errno != ENOENT && errno != ENOTEMPTY)
 331                 pa_log(__FILE__": Failed to remove %s: %s.", u->socket_path, strerror(errno));
 332
 333             pa_xfree(p);
 334         }
 335
 336         pa_xfree(u->socket_path);
 337     }
 338 #endif
 339
 340     pa_xfree(u);
 341 }