code.delx.au - pulseaudio/blob - polyp/authkey-prop.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 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 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 #include <assert.h>
  23 #include <string.h>
  24
  25 #include "xmalloc.h"
  26 #include "authkey-prop.h"
  27 #include "props.h"
  28 #include "log.h"
  29
  30 struct authkey_data {
  31     int ref;
  32     size_t length;
  33 };
  34
  35 int pa_authkey_prop_get(struct pa_core *c, const char *name, void *data, size_t len) {
  36     struct authkey_data *a;
  37     assert(c && name && data && len > 0);
  38
  39     if (!(a = pa_property_get(c, name)))
  40         return -1;
  41
  42     assert(a->length == len);
  43     memcpy(data, a+1, len);
  44     return 0;
  45 }
  46
  47 int pa_authkey_prop_put(struct pa_core *c, const char *name, const void *data, size_t len) {
  48     struct authkey_data *a;
  49     assert(c && name);
  50
  51     if (pa_property_get(c, name))
  52         return -1;
  53
  54     a = pa_xmalloc(sizeof(struct authkey_data) + len);
  55     a->ref = 1;
  56     a->length = len;
  57     memcpy(a+1, data, len);
  58
  59     pa_property_set(c, name, a);
  60
  61     return 0;
  62 }
  63
  64 void pa_authkey_prop_ref(struct pa_core *c, const char *name) {
  65     struct authkey_data *a;
  66     assert(c && name);
  67
  68     a = pa_property_get(c, name);
  69     assert(a && a->ref >= 1);
  70
  71     a->ref++;
  72 }
  73
  74 void pa_authkey_prop_unref(struct pa_core *c, const char *name) {
  75     struct authkey_data *a;
  76     assert(c && name);
  77
  78     a = pa_property_get(c, name);
  79     assert(a && a->ref >= 1);
  80
  81     if (!(--a->ref)) {
  82         pa_property_remove(c, name);
  83         pa_xfree(a);
  84     }
  85 }
  86
  87