code.delx.au - pulseaudio/blob - polyp/protocol-cli.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 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   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 Lesser 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 <assert.h>
  27 #include <stdlib.h>
  28
  29 #include "protocol-cli.h"
  30 #include "cli.h"
  31 #include "xmalloc.h"
  32 #include "log.h"
  33
  34 /* Don't allow more than this many concurrent connections */
  35 #define MAX_CONNECTIONS 10
  36
  37 struct pa_protocol_cli {
  38     struct pa_module *module;
  39     struct pa_core *core;
  40     struct pa_socket_server*server;
  41     struct pa_idxset *connections;
  42 };
  43
  44 static void cli_eof_cb(struct pa_cli*c, void*userdata) {
  45     struct pa_protocol_cli *p = userdata;
  46     assert(p);
  47     pa_idxset_remove_by_data(p->connections, c, NULL);
  48     pa_cli_free(c);
  49 }
  50
  51 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
  52     struct pa_protocol_cli *p = userdata;
  53     struct pa_cli *c;
  54     assert(s && io && p);
  55
  56     if (pa_idxset_ncontents(p->connections)+1 > MAX_CONNECTIONS) {
  57         pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.\n", MAX_CONNECTIONS);
  58         pa_iochannel_free(io);
  59         return;
  60     }
  61
  62     c = pa_cli_new(p->core, io, p->module);
  63     assert(c);
  64     pa_cli_set_eof_callback(c, cli_eof_cb, p);
  65
  66     pa_idxset_put(p->connections, c, NULL);
  67 }
  68
  69 struct pa_protocol_cli* pa_protocol_cli_new(struct pa_core *core, struct pa_socket_server *server, struct pa_module *m, struct pa_modargs *ma) {
  70     struct pa_protocol_cli* p;
  71     assert(core && server);
  72
  73     p = pa_xmalloc(sizeof(struct pa_protocol_cli));
  74     p->module = m;
  75     p->core = core;
  76     p->server = server;
  77     p->connections = pa_idxset_new(NULL, NULL);
  78
  79     pa_socket_server_set_callback(p->server, on_connection, p);
  80
  81     return p;
  82 }
  83
  84 static void free_connection(void *p, void *userdata) {
  85     assert(p);
  86     pa_cli_free(p);
  87 }
  88
  89 void pa_protocol_cli_free(struct pa_protocol_cli *p) {
  90     assert(p);
  91
  92     pa_idxset_free(p->connections, free_connection, NULL);
  93     pa_socket_server_unref(p->server);
  94     pa_xfree(p);
  95 }