code.delx.au - pulseaudio/blob - polyp/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 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 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 <arpa/inet.h>
  31 #include <unistd.h>
  32 #include <netinet/in.h>
  33
  34 #include "module.h"
  35 #include "socket-server.h"
  36 #include "socket-util.h"
  37 #include "util.h"
  38 #include "modargs.h"
  39 #include "log.h"
  40 #include "native-common.h"
  41
  42 PA_MODULE_AUTHOR("Lennart Poettering")
  43 PA_MODULE_VERSION(PACKAGE_VERSION)
  44
  45 #ifdef USE_TCP_SOCKETS
  46 #define SOCKET_DESCRIPTION "(TCP sockets)"
  47 #define SOCKET_USAGE "port=<TCP port number> loopback=<listen on loopback device only?>"
  48 #else
  49 #define SOCKET_DESCRIPTION "(UNIX sockets)"
  50 #define SOCKET_USAGE "socket=<path to UNIX socket>"
  51 #endif
  52
  53 #if defined(USE_PROTOCOL_SIMPLE)
  54   #include "protocol-simple.h"
  55   #define protocol_new pa_protocol_simple_new
  56   #define protocol_free pa_protocol_simple_free
  57   #define IPV4_PORT 4711
  58   #define UNIX_SOCKET "/tmp/polypaudio/simple"
  59   #define MODULE_ARGUMENTS "rate", "format", "channels", "sink", "source", "playback", "record",
  60   PA_MODULE_DESCRIPTION("Simple protocol "SOCKET_DESCRIPTION)
  61   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)
  62
  63 #elif defined(USE_PROTOCOL_CLI)
  64   #include "protocol-cli.h"
  65   #define protocol_new pa_protocol_cli_new
  66   #define protocol_free pa_protocol_cli_free
  67   #define IPV4_PORT 4712
  68   #define UNIX_SOCKET "/tmp/polypaudio/cli"
  69   #define MODULE_ARGUMENTS
  70   PA_MODULE_DESCRIPTION("Command line interface protocol "SOCKET_DESCRIPTION)
  71   PA_MODULE_USAGE(SOCKET_USAGE)
  72 #elif defined(USE_PROTOCOL_NATIVE)
  73   #include "protocol-native.h"
  74   #define protocol_new pa_protocol_native_new
  75   #define protocol_free pa_protocol_native_free
  76   #define IPV4_PORT PA_NATIVE_DEFAULT_PORT
  77   #define UNIX_SOCKET "/tmp/polypaudio/native"
  78   #define MODULE_ARGUMENTS "public", "cookie",
  79   PA_MODULE_DESCRIPTION("Native protocol "SOCKET_DESCRIPTION)
  80   PA_MODULE_USAGE("public=<don't check for cookies?> cookie=<path to cookie file> "SOCKET_USAGE)
  81 #elif defined(USE_PROTOCOL_ESOUND)
  82   #include "protocol-esound.h"
  83   #include "esound.h"
  84   #define protocol_new pa_protocol_esound_new
  85   #define protocol_free pa_protocol_esound_free
  86   #define IPV4_PORT ESD_DEFAULT_PORT
  87   #define UNIX_SOCKET ESD_UNIX_SOCKET_NAME
  88   #define MODULE_ARGUMENTS "sink", "source", "public", "cookie",
  89   PA_MODULE_DESCRIPTION("EsounD protocol "SOCKET_DESCRIPTION)
  90   PA_MODULE_USAGE("sink=<sink to connect to> source=<source to connect to> public=<don't check for cookies?> cookie=<path to cookie file> "SOCKET_USAGE)
  91 #else
  92   #error "Broken build system"
  93 #endif
  94
  95 static const char* const valid_modargs[] = {
  96     MODULE_ARGUMENTS
  97 #ifdef USE_TCP_SOCKETS
  98     "port",
  99     "loopback",
 100 #else
 101     "socket",
 102 #endif
 103     NULL
 104 };
 105
 106 static struct pa_socket_server *create_socket_server(struct pa_core *c, struct pa_modargs *ma) {
 107     struct pa_socket_server *s;
 108 #ifdef USE_TCP_SOCKETS
 109     int loopback = 1;
 110     uint32_t port = IPV4_PORT;
 111
 112     if (pa_modargs_get_value_boolean(ma, "loopback", &loopback) < 0) {
 113         pa_log(__FILE__": loopback= expects a numerical argument.\n");
 114         return NULL;
 115     }
 116
 117     if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
 118         pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.\n");
 119         return NULL;
 120     }
 121
 122     if (!(s = pa_socket_server_new_ipv4(c->mainloop, loopback ? INADDR_LOOPBACK : INADDR_ANY, port)))
 123         return NULL;
 124 #else
 125     int r;
 126     const char *p;
 127
 128     p = pa_modargs_get_value(ma, "socket", UNIX_SOCKET);
 129     assert(p);
 130
 131     if (pa_unix_socket_make_secure_dir(p) < 0) {
 132         pa_log(__FILE__": Failed to create secure socket directory.\n");
 133         return NULL;
 134     }
 135
 136     if ((r = pa_unix_socket_remove_stale(p)) < 0) {
 137         pa_log(__FILE__": Failed to remove stale UNIX socket '%s': %s\n", p, strerror(errno));
 138         return NULL;
 139     }
 140
 141     if (r)
 142         pa_log(__FILE__": Removed stale UNIX socket '%s'.", p);
 143
 144     if (!(s = pa_socket_server_new_unix(c->mainloop, p)))
 145         return NULL;
 146
 147 #endif
 148     return s;
 149 }
 150
 151 int pa__init(struct pa_core *c, struct pa_module*m) {
 152     struct pa_socket_server *s;
 153     struct pa_modargs *ma = NULL;
 154     int ret = -1;
 155     assert(c && m);
 156
 157     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 158         pa_log(__FILE__": Failed to parse module arguments\n");
 159         goto finish;
 160     }
 161
 162     if (!(s = create_socket_server(c, ma)))
 163         goto finish;
 164
 165     if (!(m->userdata = protocol_new(c, s, m, ma))) {
 166         pa_socket_server_unref(s);
 167         goto finish;
 168     }
 169
 170     ret = 0;
 171
 172 finish:
 173     if (ma)
 174         pa_modargs_free(ma);
 175
 176     return ret;
 177 }
 178
 179 void pa__done(struct pa_core *c, struct pa_module*m) {
 180     assert(c && m);
 181
 182     protocol_free(m->userdata);
 183 }