include/asterisk/dnsmgr.h

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2005, Digium, Inc.
   5  *
   6  * Kevin P. Fleming <kpfleming@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  * \brief Background DNS update manager
  21  */
  22
  23 #ifndef _ASTERISK_DNSMGR_H
  24 #define _ASTERISK_DNSMGR_H
  25
  26 #if defined(__cplusplus) || defined(c_plusplus)
  27 extern "C" {
  28 #endif
  29
  30 #include <netinet/in.h>
  31
  32 struct ast_dnsmgr_entry;
  33
  34 struct ast_dnsmgr_entry *ast_dnsmgr_get(const char *name, struct in_addr *result);
  35
  36 void ast_dnsmgr_release(struct ast_dnsmgr_entry *entry);
  37
  38 int ast_dnsmgr_lookup(const char *name, struct in_addr *result, struct ast_dnsmgr_entry **dnsmgr);
  39
  40 /*!
  41  * \brief Force a refresh of a dnsmgr entry
  42  *
  43  * \retval non-zero if the result is different than the previous result
  44  * \retval zero if the result is the same as the previous result
  45  */
  46 int ast_dnsmgr_refresh(struct ast_dnsmgr_entry *entry);
  47
  48 /*!
  49  * \brief Check is see if a dnsmgr entry has changed
  50  *
  51  * \retval non-zero if the dnsmgr entry has changed since the last call to
  52  *                  this function
  53  * \retval zero     if the dnsmgr entry has not changed since the last call to
  54  *                  this function
  55  */
  56 int ast_dnsmgr_changed(struct ast_dnsmgr_entry *entry);
  57
  58 #if defined(__cplusplus) || defined(c_plusplus)
  59 }
  60 #endif /* c_plusplus */
  61
  62 #endif /* ASTERISK_DNSMGR_H */