code.delx.au - pulseaudio/blob - src/pulsecore/protocol-cli.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdlib.h>
  29
  30 #include <pulse/xmalloc.h>
  31
  32 #include <pulsecore/cli.h>
  33 #include <pulsecore/log.h>
  34 #include <pulsecore/macro.h>
  35
  36 #include "protocol-cli.h"
  37
  38 /* Don't allow more than this many concurrent connections */
  39 #define MAX_CONNECTIONS 25
  40
  41 struct pa_protocol_cli {
  42     pa_module *module;
  43     pa_core *core;
  44     pa_socket_server*server;
  45     pa_idxset *connections;
  46 };
  47
  48 static void cli_eof_cb(pa_cli*c, void*userdata) {
  49     pa_protocol_cli *p = userdata;
  50     pa_assert(p);
  51
  52     pa_idxset_remove_by_data(p->connections, c, NULL);
  53     pa_cli_free(c);
  54 }
  55
  56 static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
  57     pa_protocol_cli *p = userdata;
  58     pa_cli *c;
  59
  60     pa_assert(s);
  61     pa_assert(io);
  62     pa_assert(p);
  63
  64     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
  65         pa_log("Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
  66         pa_iochannel_free(io);
  67         return;
  68     }
  69
  70     c = pa_cli_new(p->core, io, p->module);
  71     pa_cli_set_eof_callback(c, cli_eof_cb, p);
  72
  73     pa_idxset_put(p->connections, c, NULL);
  74 }
  75
  76 pa_protocol_cli* pa_protocol_cli_new(pa_core *core, pa_socket_server *server, pa_module *m, PA_GCC_UNUSED pa_modargs *ma) {
  77     pa_protocol_cli* p;
  78
  79     pa_core_assert_ref(core);
  80     pa_assert(server);
  81
  82     p = pa_xnew(pa_protocol_cli, 1);
  83     p->module = m;
  84     p->core = core;
  85     p->server = server;
  86     p->connections = pa_idxset_new(NULL, NULL);
  87
  88     pa_socket_server_set_callback(p->server, on_connection, p);
  89
  90     return p;
  91 }
  92
  93 static void free_connection(void *p, PA_GCC_UNUSED void *userdata) {
  94     pa_assert(p);
  95
  96     pa_cli_free(p);
  97 }
  98
  99 void pa_protocol_cli_free(pa_protocol_cli *p) {
 100     pa_assert(p);
 101
 102     pa_idxset_free(p->connections, free_connection, NULL);
 103     pa_socket_server_unref(p->server);
 104     pa_xfree(p);
 105 }