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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser 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   PulseAudio 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 Lesser General Public License
  17   along with PulseAudio; 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 <assert.h>
  27 #include <stdlib.h>
  28
  29 #include <pulse/xmalloc.h>
  30
  31 #include <pulsecore/cli.h>
  32 #include <pulsecore/log.h>
  33
  34 #include "protocol-cli.h"
  35
  36 /* Don't allow more than this many concurrent connections */
  37 #define MAX_CONNECTIONS 25
  38
  39 struct pa_protocol_cli {
  40     pa_module *module;
  41     pa_core *core;
  42     pa_socket_server*server;
  43     pa_idxset *connections;
  44 };
  45
  46 static void cli_eof_cb(pa_cli*c, void*userdata) {
  47     pa_protocol_cli *p = userdata;
  48     assert(p);
  49     pa_idxset_remove_by_data(p->connections, c, NULL);
  50     pa_cli_free(c);
  51 }
  52
  53 static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
  54     pa_protocol_cli *p = userdata;
  55     pa_cli *c;
  56     assert(s && io && p);
  57
  58     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
  59         pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
  60         pa_iochannel_free(io);
  61         return;
  62     }
  63
  64     c = pa_cli_new(p->core, io, p->module);
  65     assert(c);
  66     pa_cli_set_eof_callback(c, cli_eof_cb, p);
  67
  68     pa_idxset_put(p->connections, c, NULL);
  69 }
  70
  71 pa_protocol_cli* pa_protocol_cli_new(pa_core *core, pa_socket_server *server, pa_module *m, PA_GCC_UNUSED pa_modargs *ma) {
  72     pa_protocol_cli* p;
  73     assert(core && server);
  74
  75     p = pa_xmalloc(sizeof(pa_protocol_cli));
  76     p->module = m;
  77     p->core = core;
  78     p->server = server;
  79     p->connections = pa_idxset_new(NULL, NULL);
  80
  81     pa_socket_server_set_callback(p->server, on_connection, p);
  82
  83     return p;
  84 }
  85
  86 static void free_connection(void *p, PA_GCC_UNUSED void *userdata) {
  87     assert(p);
  88     pa_cli_free(p);
  89 }
  90
  91 void pa_protocol_cli_free(pa_protocol_cli *p) {
  92     assert(p);
  93
  94     pa_idxset_free(p->connections, free_connection, NULL);
  95     pa_socket_server_unref(p->server);
  96     pa_xfree(p);
  97 }