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 <assert.h>
  29 #include <stdlib.h>
  30
  31 #include <pulse/xmalloc.h>
  32
  33 #include <pulsecore/cli.h>
  34 #include <pulsecore/log.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     assert(p);
  51     pa_idxset_remove_by_data(p->connections, c, NULL);
  52     pa_cli_free(c);
  53 }
  54
  55 static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
  56     pa_protocol_cli *p = userdata;
  57     pa_cli *c;
  58     assert(s && io && p);
  59
  60     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
  61         pa_log("Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
  62         pa_iochannel_free(io);
  63         return;
  64     }
  65
  66     c = pa_cli_new(p->core, io, p->module);
  67     assert(c);
  68     pa_cli_set_eof_callback(c, cli_eof_cb, p);
  69
  70     pa_idxset_put(p->connections, c, NULL);
  71 }
  72
  73 pa_protocol_cli* pa_protocol_cli_new(pa_core *core, pa_socket_server *server, pa_module *m, PA_GCC_UNUSED pa_modargs *ma) {
  74     pa_protocol_cli* p;
  75     assert(core && server);
  76
  77     p = pa_xmalloc(sizeof(pa_protocol_cli));
  78     p->module = m;
  79     p->core = core;
  80     p->server = server;
  81     p->connections = pa_idxset_new(NULL, NULL);
  82
  83     pa_socket_server_set_callback(p->server, on_connection, p);
  84
  85     return p;
  86 }
  87
  88 static void free_connection(void *p, PA_GCC_UNUSED void *userdata) {
  89     assert(p);
  90     pa_cli_free(p);
  91 }
  92
  93 void pa_protocol_cli_free(pa_protocol_cli *p) {
  94     assert(p);
  95
  96     pa_idxset_free(p->connections, free_connection, NULL);
  97     pa_socket_server_unref(p->server);
  98     pa_xfree(p);
  99 }