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
  33 #include "module.h"
  34 #include "socket-server.h"
  35 #include "socket-util.h"
  36 #include "util.h"
  37 #include "modargs.h"
  38 #include "log.h"
  39
  40 PA_MODULE_AUTHOR("Lennart Poettering")
  41 PA_MODULE_VERSION(PACKAGE_VERSION)
  42
  43 #ifdef USE_TCP_SOCKETS
  44 #define SOCKET_DESCRIPTION "(TCP sockets)"
  45 #define SOCKET_USAGE "port=<TCP port number> loopback=<listen on loopback device only?>"
  46 #else
  47 #define SOCKET_DESCRIPTION "(UNIX sockets)"
  48 #define SOCKET_USAGE "socket=<path to UNIX socket>"
  49 #endif
  50
  51 #if defined(USE_PROTOCOL_SIMPLE)
  52   #include "protocol-simple.h"
  53   #define protocol_new pa_protocol_simple_new
  54   #define protocol_free pa_protocol_simple_free
  55   #define IPV4_PORT 4711
  56   #define UNIX_SOCKET "/tmp/polypaudio/simple"
  57   #define MODULE_ARGUMENTS "rate", "format", "channels", "sink", "source", "playback", "record",
  58   PA_MODULE_DESCRIPTION("Simple protocol "SOCKET_DESCRIPTION)
  59   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)
  60
  61 #elif defined(USE_PROTOCOL_CLI)
  62   #include "protocol-cli.h"
  63   #define protocol_new pa_protocol_cli_new
  64   #define protocol_free pa_protocol_cli_free
  65   #define IPV4_PORT 4712
  66   #define UNIX_SOCKET "/tmp/polypaudio/cli"
  67   #define MODULE_ARGUMENTS
  68   PA_MODULE_DESCRIPTION("Command line interface protocol "SOCKET_DESCRIPTION)
  69   PA_MODULE_USAGE(SOCKET_USAGE)
  70 #elif defined(USE_PROTOCOL_NATIVE)
  71   #include "protocol-native.h"
  72   #define protocol_new pa_protocol_native_new
  73   #define protocol_free pa_protocol_native_free
  74   #define IPV4_PORT 4713
  75   #define UNIX_SOCKET "/tmp/polypaudio/native"
  76   #define MODULE_ARGUMENTS "public", "cookie",
  77   PA_MODULE_DESCRIPTION("Native protocol "SOCKET_DESCRIPTION)
  78   PA_MODULE_USAGE("public=<don't check for cookies?> cookie=<path to cookie file> "SOCKET_USAGE)
  79 #elif defined(USE_PROTOCOL_ESOUND)
  80   #include "protocol-esound.h"
  81   #include "esound.h"
  82   #define protocol_new pa_protocol_esound_new
  83   #define protocol_free pa_protocol_esound_free
  84   #define IPV4_PORT ESD_DEFAULT_PORT
  85   #define UNIX_SOCKET ESD_UNIX_SOCKET_NAME
  86   #define MODULE_ARGUMENTS "sink", "source", "public", "cookie",
  87   PA_MODULE_DESCRIPTION("EsounD protocol "SOCKET_DESCRIPTION)
  88   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)
  89 #else
  90   #error "Broken build system"
  91 #endif
  92
  93 static const char* const valid_modargs[] = {
  94     MODULE_ARGUMENTS
  95 #ifdef USE_TCP_SOCKETS
  96     "port",
  97     "loopback",
  98 #else
  99     "socket",
 100 #endif
 101     NULL
 102 };
 103
 104 static struct pa_socket_server *create_socket_server(struct pa_core *c, struct pa_modargs *ma) {
 105     struct pa_socket_server *s;
 106 #ifdef USE_TCP_SOCKETS
 107     int loopback = 1;
 108     uint32_t port = IPV4_PORT;
 109
 110     if (pa_modargs_get_value_boolean(ma, "loopback", &loopback) < 0) {
 111         pa_log(__FILE__": loopback= expects a numerical argument.\n");
 112         return NULL;
 113     }
 114
 115     if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
 116         pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.\n");
 117         return NULL;
 118     }
 119
 120     if (!(s = pa_socket_server_new_ipv4(c->mainloop, loopback ? INADDR_LOOPBACK : INADDR_ANY, port)))
 121         return NULL;
 122 #else
 123     int r;
 124     const char *p;
 125
 126     p = pa_modargs_get_value(ma, "socket", UNIX_SOCKET);
 127     assert(p);
 128
 129     if (pa_unix_socket_make_secure_dir(p) < 0) {
 130         pa_log(__FILE__": Failed to create secure socket directory.\n");
 131         return NULL;
 132     }
 133
 134     if ((r = pa_unix_socket_remove_stale(p)) < 0) {
 135         pa_log(__FILE__": Failed to remove stale UNIX socket '%s': %s\n", p, strerror(errno));
 136         return NULL;
 137     }
 138
 139     if (r)
 140         pa_log(__FILE__": Removed stale UNIX socket '%s'.", p);
 141
 142     if (!(s = pa_socket_server_new_unix(c->mainloop, p)))
 143         return NULL;
 144
 145 #endif
 146     return s;
 147 }
 148
 149 int pa__init(struct pa_core *c, struct pa_module*m) {
 150     struct pa_socket_server *s;
 151     struct pa_modargs *ma = NULL;
 152     int ret = -1;
 153     assert(c && m);
 154
 155     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 156         pa_log(__FILE__": Failed to parse module arguments\n");
 157         goto finish;
 158     }
 159
 160     if (!(s = create_socket_server(c, ma)))
 161         goto finish;
 162
 163     if (!(m->userdata = protocol_new(c, s, m, ma))) {
 164         pa_socket_server_unref(s);
 165         goto finish;
 166     }
 167
 168     ret = 0;
 169
 170 finish:
 171     if (ma)
 172         pa_modargs_free(ma);
 173
 174     return ret;
 175 }
 176
 177 void pa__done(struct pa_core *c, struct pa_module*m) {
 178     assert(c && m);
 179
 180     protocol_free(m->userdata);
 181 }