third_party/apple_apsl/dnsinfo.h

   1 /*
   2  * Copyright (c) 2004-2006, 2008, 2009, 2011 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef __DNSINFO_H__
  25 #define __DNSINFO_H__
  26
  27 /*
  28  * These routines provide access to the systems DNS configuration
  29  */
  30
  31 #include <sys/cdefs.h>
  32 #include <stdint.h>
  33 #include <sys/types.h>
  34 #include <sys/socket.h>
  35 #include <netinet/in.h>
  36
  37 #define DNSINFO_VERSION         20111104
  38
  39 #define DEFAULT_SEARCH_ORDER    200000   /* search order for the "default" resolver domain name */
  40
  41 #define DNS_PTR(type, name)                             \
  42         union {                                         \
  43                 type            name;                   \
  44                 uint64_t        _ ## name ## _p;        \
  45         }
  46
  47 #define DNS_VAR(type, name)                             \
  48         type    name
  49
  50
  51 #pragma pack(4)
  52 typedef struct {
  53         struct in_addr  address;
  54         struct in_addr  mask;
  55 } dns_sortaddr_t;
  56 #pragma pack()
  57
  58
  59 #pragma pack(4)
  60 typedef struct {
  61         DNS_PTR(char *,                 domain);        /* domain */
  62         DNS_VAR(int32_t,                n_nameserver);  /* # nameserver */
  63         DNS_PTR(struct sockaddr **,     nameserver);
  64         DNS_VAR(uint16_t,               port);          /* port (in host byte order) */
  65         DNS_VAR(int32_t,                n_search);      /* # search */
  66         DNS_PTR(char **,                search);
  67         DNS_VAR(int32_t,                n_sortaddr);    /* # sortaddr */
  68         DNS_PTR(dns_sortaddr_t **,      sortaddr);
  69         DNS_PTR(char *,                 options);       /* options */
  70         DNS_VAR(uint32_t,               timeout);       /* timeout */
  71         DNS_VAR(uint32_t,               search_order);  /* search_order */
  72         DNS_VAR(uint32_t,               if_index);
  73         DNS_VAR(uint32_t,               flags);
  74         DNS_VAR(uint32_t,               reach_flags);   /* SCNetworkReachabilityFlags */
  75         DNS_VAR(uint32_t,               reserved[5]);
  76 } dns_resolver_t;
  77 #pragma pack()
  78
  79
  80 #define DNS_RESOLVER_FLAGS_SCOPED       1               /* configuration is for scoped questions */
  81
  82
  83 #pragma pack(4)
  84 typedef struct {
  85         DNS_VAR(int32_t,                n_resolver);            /* resolver configurations */
  86         DNS_PTR(dns_resolver_t **,      resolver);
  87         DNS_VAR(int32_t,                n_scoped_resolver);     /* "scoped" resolver configurations */
  88         DNS_PTR(dns_resolver_t **,      scoped_resolver);
  89         DNS_VAR(uint32_t,               reserved[5]);
  90 } dns_config_t;
  91 #pragma pack()
  92
  93
  94 __BEGIN_DECLS
  95
  96 /*
  97  * DNS configuration access APIs
  98  */
  99 const char *
 100 dns_configuration_notify_key    ();
 101
 102 dns_config_t *
 103 dns_configuration_copy          ();
 104
 105 void
 106 dns_configuration_free          (dns_config_t   *config);
 107
 108 void
 109 _dns_configuration_ack          (dns_config_t   *config,
 110                                  const char     *bundle_id);
 111
 112 __END_DECLS
 113
 114 #endif  /* __DNSINFO_H__ */