This file is indexed.

/usr/include/asterisk/dnsmgr.h is in asterisk-dev 1:1.8.13.1~dfsg1-3+deb7u3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2005, Digium, Inc.
 *
 * Kevin P. Fleming <kpfleming@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 * \brief Background DNS update manager
 */

#ifndef _ASTERISK_DNSMGR_H
#define _ASTERISK_DNSMGR_H

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

#include "asterisk/netsock2.h"
#include "asterisk/srv.h"

/*!
 * \brief A DNS manager entry
 *
 * This is an opaque type.
 */
struct ast_dnsmgr_entry;

typedef void (*dns_update_func)(struct ast_sockaddr *old_addr, struct ast_sockaddr *new_addr, void *data);

/*!
 * \brief Allocate a new DNS manager entry
 *
 * \param name the hostname
 * \param result where the DNS manager should store the IP address as it refreshes it.
 * \param service
 *
 * \details
 * This function allocates a new DNS manager entry object, and fills it with the
 * provided hostname and IP address.  This function does not force an initial lookup
 * of the IP address.  So, generally, this should be used when the initial address
 * is already known.
 *
 * \return a DNS manager entry
 * \version 1.6.1 result changed from struct in_addr to struct sockaddr_in to store port number
 * \version 1.8.0 result changed from struct ast_sockaddr_in to ast_sockaddr for IPv6 support
 */
struct ast_dnsmgr_entry *ast_dnsmgr_get(const char *name, struct ast_sockaddr *result, const char *service);

/*!
 * \brief Allocate a new DNS manager entry
 *
 * \param name the hostname
 * \param result where the DNS manager should store the IP address as it refreshes it.
 * \param service
 * \param family Address family to filter DNS addresses.
 *
 * \details
 * This function allocates a new DNS manager entry object, and fills it with the
 * provided hostname and IP address.  This function does not force an initial lookup
 * of the IP address.  So, generally, this should be used when the initial address
 * is already known.
 *
 * \return a DNS manager entry
 */
struct ast_dnsmgr_entry *ast_dnsmgr_get_family(const char *name, struct ast_sockaddr *result, const char *service, unsigned int family);

/*!
 * \brief Free a DNS manager entry
 *
 * \param entry the DNS manager entry to free
 *
 * \return nothing
 */
void ast_dnsmgr_release(struct ast_dnsmgr_entry *entry);

/*!
 * \brief Allocate and initialize a DNS manager entry
 *
 * \param name the hostname
 * \param result where to store the IP address as the DNS manager refreshes it.
 * The address family is used as an input parameter to filter the returned addresses.
 * If it is 0, both IPv4 and IPv6 addresses can be returned.
 * \param dnsmgr Where to store the allocate DNS manager entry
 * \param service
 *
 * \note
 * This function allocates a new DNS manager entry object, and fills it with
 * the provided hostname and IP address.  This function _does_ force an initial
 * lookup, so it may block for some period of time.
 *
 * \retval 0 success
 * \retval non-zero failure
 * \version 1.6.1 result changed from struct in_addr to struct aockaddr_in to store port number
 */
int ast_dnsmgr_lookup(const char *name, struct ast_sockaddr *result, struct ast_dnsmgr_entry **dnsmgr, const char *service);

/*!
 * \brief Allocate and initialize a DNS manager entry, with update callback
 *
 * \param name the hostname
 * \param result The addr which is intended to be updated in the update callback when DNS manager calls it on refresh.
 * The address family is used as an input parameter to filter the returned addresses.
 * If it is 0, both IPv4 and IPv6 addresses can be returned.
 * \param dnsmgr Where to store the allocate DNS manager entry
 * \param service
 * \param func The update callback function
 * The update callback will be called when DNS manager detects that an IP address has been changed.
 * Instead of updating the addr itself, DNS manager will call this callback function with the old
 * and new addresses. It is the responsibility of the callback to perform any updates
 * \param data A pointer to data that will be passed through to the callback function
 *
 * \note
 * This function allocates a new DNS manager entry object, and fills it with
 * the provided hostname and IP address.  This function _does_ force an initial
 * lookup, so it may block for some period of time.
 *
 * \retval 0 success
 * \retval non-zero failure
 */
int ast_dnsmgr_lookup_cb(const char *name, struct ast_sockaddr *result, struct ast_dnsmgr_entry **dnsmgr, const char *service, dns_update_func func, void *data);

/*!
 * \brief Force a refresh of a dnsmgr entry
 *
 * \retval non-zero if the result is different than the previous result
 * \retval zero if the result is the same as the previous result
 */
int ast_dnsmgr_refresh(struct ast_dnsmgr_entry *entry);

/*!
 * \brief Check is see if a dnsmgr entry has changed
 *
 * \retval non-zero if the dnsmgr entry has changed since the last call to
 *                  this function
 * \retval zero     if the dnsmgr entry has not changed since the last call to
 *                  this function
 */
int ast_dnsmgr_changed(struct ast_dnsmgr_entry *entry);

#if defined(__cplusplus) || defined(c_plusplus)
}
#endif /* c_plusplus */

#endif /* ASTERISK_DNSMGR_H */