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 TCPWRAP_SERVICE "polypaudio-simple"
  58   #define IPV4_PORT 4711
  59   #define UNIX_SOCKET "/tmp/polypaudio/simple"
  60   #define MODULE_ARGUMENTS "rate", "format", "channels", "sink", "source", "playback", "record",
  61   PA_MODULE_DESCRIPTION("Simple protocol "SOCKET_DESCRIPTION)
  62   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)
  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 TCPWRAP_SERVICE "polypaudio-cli"
  68   #define IPV4_PORT 4712
  69   #define UNIX_SOCKET "/tmp/polypaudio/cli"
  70   #define MODULE_ARGUMENTS
  71   PA_MODULE_DESCRIPTION("Command line interface protocol "SOCKET_DESCRIPTION)
  72   PA_MODULE_USAGE(SOCKET_USAGE)
  73 #elif defined(USE_PROTOCOL_NATIVE)
  74   #include "protocol-native.h"
  75   #define protocol_new pa_protocol_native_new
  76   #define protocol_free pa_protocol_native_free
  77   #define TCPWRAP_SERVICE "polypaudio-native"
  78   #define IPV4_PORT PA_NATIVE_DEFAULT_PORT
  79   #define UNIX_SOCKET "/tmp/polypaudio/native"
  80   #define MODULE_ARGUMENTS "public", "cookie",
  81   PA_MODULE_DESCRIPTION("Native protocol "SOCKET_DESCRIPTION)
  82   PA_MODULE_USAGE("public=<don't check for cookies?> cookie=<path to cookie file> "SOCKET_USAGE)
  83 #elif defined(USE_PROTOCOL_ESOUND)
  84   #include "protocol-esound.h"
  85   #include "esound.h"
  86   #define protocol_new pa_protocol_esound_new
  87   #define protocol_free pa_protocol_esound_free
  88   #define TCPWRAP_SERVICE "esound"
  89   #define IPV4_PORT ESD_DEFAULT_PORT
  90   #define UNIX_SOCKET ESD_UNIX_SOCKET_NAME
  91   #define MODULE_ARGUMENTS "sink", "source", "public", "cookie",
  92   PA_MODULE_DESCRIPTION("EsounD protocol "SOCKET_DESCRIPTION)
  93   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)
  94 #else
  95   #error "Broken build system"
  96 #endif
  97
  98 static const char* const valid_modargs[] = {
  99     MODULE_ARGUMENTS
 100 #ifdef USE_TCP_SOCKETS
 101     "port",
 102     "loopback",
 103 #else
 104     "socket",
 105 #endif
 106     NULL
 107 };
 108
 109 static struct pa_socket_server *create_socket_server(struct pa_core *c, struct pa_modargs *ma) {
 110     struct pa_socket_server *s;
 111 #ifdef USE_TCP_SOCKETS
 112     int loopback = 1;
 113     uint32_t port = IPV4_PORT;
 114
 115     if (pa_modargs_get_value_boolean(ma, "loopback", &loopback) < 0) {
 116         pa_log(__FILE__": loopback= expects a numerical argument.\n");
 117         return NULL;
 118     }
 119
 120     if (pa_modargs_get_value_u32(ma, "port", &port) < 0 || port < 1 || port > 0xFFFF) {
 121         pa_log(__FILE__": port= expects a numerical argument between 1 and 65535.\n");
 122         return NULL;
 123     }
 124
 125     if (!(s = pa_socket_server_new_ipv4(c->mainloop, loopback ? INADDR_LOOPBACK : INADDR_ANY, port, TCPWRAP_SERVICE)))
 126         return NULL;
 127 #else
 128     int r;
 129     const char *p;
 130
 131     p = pa_modargs_get_value(ma, "socket", UNIX_SOCKET);
 132     assert(p);
 133
 134     if (pa_unix_socket_make_secure_dir(p) < 0) {
 135         pa_log(__FILE__": Failed to create secure socket directory.\n");
 136         return NULL;
 137     }
 138
 139     if ((r = pa_unix_socket_remove_stale(p)) < 0) {
 140         pa_log(__FILE__": Failed to remove stale UNIX socket '%s': %s\n", p, strerror(errno));
 141         return NULL;
 142     }
 143
 144     if (r)
 145         pa_log(__FILE__": Removed stale UNIX socket '%s'.", p);
 146
 147     if (!(s = pa_socket_server_new_unix(c->mainloop, p)))
 148         return NULL;
 149
 150 #endif
 151     return s;
 152 }
 153
 154 int pa__init(struct pa_core *c, struct pa_module*m) {
 155     struct pa_socket_server *s;
 156     struct pa_modargs *ma = NULL;
 157     int ret = -1;
 158     assert(c && m);
 159
 160     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 161         pa_log(__FILE__": Failed to parse module arguments\n");
 162         goto finish;
 163     }
 164
 165     if (!(s = create_socket_server(c, ma)))
 166         goto finish;
 167
 168     if (!(m->userdata = protocol_new(c, s, m, ma))) {
 169         pa_socket_server_unref(s);
 170         goto finish;
 171     }
 172
 173     ret = 0;
 174
 175 finish:
 176     if (ma)
 177         pa_modargs_free(ma);
 178
 179     return ret;
 180 }
 181
 182 void pa__done(struct pa_core *c, struct pa_module*m) {
 183     assert(c && m);
 184
 185     protocol_free(m->userdata);
 186 }