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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   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 <stdlib.h>
  27
  28 #include <pulse/xmalloc.h>
  29
  30 #include <pulsecore/cli.h>
  31 #include <pulsecore/log.h>
  32 #include <pulsecore/macro.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     pa_assert(p);
  49
  50     pa_idxset_remove_by_data(p->connections, c, NULL);
  51     pa_cli_free(c);
  52 }
  53
  54 static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
  55     pa_protocol_cli *p = userdata;
  56     pa_cli *c;
  57
  58     pa_assert(s);
  59     pa_assert(io);
  60     pa_assert(p);
  61
  62     if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
  63         pa_log("Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
  64         pa_iochannel_free(io);
  65         return;
  66     }
  67
  68     c = pa_cli_new(p->core, io, p->module);
  69     pa_cli_set_eof_callback(c, cli_eof_cb, p);
  70
  71     pa_idxset_put(p->connections, c, NULL);
  72 }
  73
  74 pa_protocol_cli* pa_protocol_cli_new(pa_core *core, pa_socket_server *server, pa_module *m, PA_GCC_UNUSED pa_modargs *ma) {
  75     pa_protocol_cli* p;
  76
  77     pa_core_assert_ref(core);
  78     pa_assert(server);
  79
  80     p = pa_xnew(pa_protocol_cli, 1);
  81     p->module = m;
  82     p->core = core;
  83     p->server = pa_socket_server_ref(server);
  84     p->connections = pa_idxset_new(NULL, NULL);
  85
  86     pa_socket_server_set_callback(p->server, on_connection, p);
  87
  88     return p;
  89 }
  90
  91 static void free_connection(void *p, PA_GCC_UNUSED void *userdata) {
  92     pa_assert(p);
  93
  94     pa_cli_free(p);
  95 }
  96
  97 void pa_protocol_cli_free(pa_protocol_cli *p) {
  98     pa_assert(p);
  99
 100     pa_idxset_free(p->connections, free_connection, NULL);
 101     pa_socket_server_unref(p->server);
 102     pa_xfree(p);
 103 }