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 #else
  46 #define SOCKET_DESCRIPTION "(UNIX sockets)"
  47 #endif
  48
  49
  50 #if defined(USE_PROTOCOL_SIMPLE)
  51   #include "protocol-simple.h"
  52   #define protocol_new pa_protocol_simple_new
  53   #define protocol_free pa_protocol_simple_free
  54   #define IPV4_PORT 4711
  55   #define UNIX_SOCKET "/tmp/polypaudio/simple"
  56   #define MODULE_ARGUMENTS "rate", "format", "channels", "sink", "source", "playback", "record",
  57   PA_MODULE_DESCRIPTION("Simple protocol "SOCKET_DESCRIPTION)
  58 #elif defined(USE_PROTOCOL_CLI)
  59   #include "protocol-cli.h"
  60   #define protocol_new pa_protocol_cli_new
  61   #define protocol_free pa_protocol_cli_free
  62   #define IPV4_PORT 4712
  63   #define UNIX_SOCKET "/tmp/polypaudio/cli"
  64   #define MODULE_ARGUMENTS
  65   PA_MODULE_DESCRIPTION("Command line interface protocol "SOCKET_DESCRIPTION)
  66 #elif defined(USE_PROTOCOL_NATIVE)
  67   #include "protocol-native.h"
  68   #define protocol_new pa_protocol_native_new
  69   #define protocol_free pa_protocol_native_free
  70   #define IPV4_PORT 4713
  71   #define UNIX_SOCKET "/tmp/polypaudio/native"
  72   #define MODULE_ARGUMENTS "public", "cookie",
  73   PA_MODULE_DESCRIPTION("Native protocol "SOCKET_DESCRIPTION)
  74 #elif defined(USE_PROTOCOL_ESOUND)
  75   #include "protocol-esound.h"
  76   #include "esound.h"
  77   #define protocol_new pa_protocol_esound_new
  78   #define protocol_free pa_protocol_esound_free
  79   #define IPV4_PORT ESD_DEFAULT_PORT
  80   #define UNIX_SOCKET ESD_UNIX_SOCKET_NAME
  81   #define MODULE_ARGUMENTS "sink", "source", "public", "cookie",
  82   PA_MODULE_DESCRIPTION("EsounD protocol "SOCKET_DESCRIPTION)
  83 #else
  84   #error "Broken build system"
  85 #endif
  86
  87 static const char* const valid_modargs[] = {
  88     MODULE_ARGUMENTS
  89 #ifdef USE_TCP_SOCKETS
  90     "port",
  91     "loopback",
  92 #else
  93     "socket",
  94 #endif
  95     NULL
  96 };
  97
  98 static struct pa_socket_server *create_socket_server(struct pa_core *c, struct pa_modargs *ma) {
  99     struct pa_socket_server *s;
 100 #ifdef USE_TCP_SOCKETS
 101     int loopback = 1;
 102     uint32_t port = IPV4_PORT;
 103
 104     if (pa_modargs_get_value_boolean(ma, "loopback", &loopback) < 0) {
 105         pa_log(__FILE__": loopback= expects a numerical argument.\n");
 106         return NULL;
 107     }
 108
 109     if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
 110         pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.\n");
 111         return NULL;
 112     }
 113
 114     if (!(s = pa_socket_server_new_ipv4(c->mainloop, loopback ? INADDR_LOOPBACK : INADDR_ANY, port)))
 115         return NULL;
 116 #else
 117     int r;
 118     const char *p;
 119
 120     p = pa_modargs_get_value(ma, "socket", UNIX_SOCKET);
 121     assert(p);
 122
 123     if (pa_unix_socket_make_secure_dir(p) < 0) {
 124         pa_log(__FILE__": Failed to create secure socket directory.\n");
 125         return NULL;
 126     }
 127
 128     if ((r = pa_unix_socket_remove_stale(p)) < 0) {
 129         pa_log(__FILE__": Failed to remove stale UNIX socket '%s': %s\n", p, strerror(errno));
 130         return NULL;
 131     }
 132
 133     if (r)
 134         pa_log(__FILE__": Removed stale UNIX socket '%s'.", p);
 135
 136     if (!(s = pa_socket_server_new_unix(c->mainloop, p)))
 137         return NULL;
 138
 139 #endif
 140     return s;
 141 }
 142
 143 int pa__init(struct pa_core *c, struct pa_module*m) {
 144     struct pa_socket_server *s;
 145     struct pa_modargs *ma = NULL;
 146     int ret = -1;
 147     assert(c && m);
 148
 149     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 150         pa_log(__FILE__": Failed to parse module arguments\n");
 151         goto finish;
 152     }
 153
 154     if (!(s = create_socket_server(c, ma)))
 155         goto finish;
 156
 157     if (!(m->userdata = protocol_new(c, s, m, ma))) {
 158         pa_socket_server_unref(s);
 159         goto finish;
 160     }
 161
 162     ret = 0;
 163
 164 finish:
 165     if (ma)
 166         pa_modargs_free(ma);
 167
 168     return ret;
 169 }
 170
 171 void pa__done(struct pa_core *c, struct pa_module*m) {
 172     assert(c && m);
 173
 174     protocol_free(m->userdata);
 175 }