1 /*- 2 * Copyright (C) 2005 The FreeBSD Project. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #ifndef _NETDB_PRIVATE_H_ 29 #define _NETDB_PRIVATE_H_ 30 31 #include <stdio.h> /* XXX: for FILE */ 32 33 #define NETDB_THREAD_ALLOC(name) \ 34 static struct name name; \ 35 static thread_key_t name##_key; \ 36 static once_t name##_init_once = ONCE_INITIALIZER; \ 37 static int name##_thr_keycreated = 0; \ 38 \ 39 static void name##_free(void *); \ 40 \ 41 static void \ 42 name##_keycreate(void) \ 43 { \ 44 name##_thr_keycreated = \ 45 (thr_keycreate(&name##_key, name##_free) == 0); \ 46 } \ 47 \ 48 struct name * \ 49 __##name##_init(void) \ 50 { \ 51 struct name *he; \ 52 \ 53 if (thr_main() != 0) \ 54 return (&name); \ 55 if (thr_once(&name##_init_once, name##_keycreate) != 0 || \ 56 !name##_thr_keycreated) \ 57 return (NULL); \ 58 if ((he = thr_getspecific(name##_key)) != NULL) \ 59 return (he); \ 60 if ((he = calloc(1, sizeof(*he))) == NULL) \ 61 return (NULL); \ 62 if (thr_setspecific(name##_key, he) == 0) \ 63 return (he); \ 64 free(he); \ 65 return (NULL); \ 66 } 67 68 #define _MAXALIASES 35 69 #define _MAXLINELEN 1024 70 #define _MAXADDRS 35 71 #define _HOSTBUFSIZE (8 * 1024) 72 #define _NETBUFSIZE 1025 73 74 struct hostent_data { 75 uint32_t host_addr[4]; /* IPv4 or IPv6 */ 76 char *h_addr_ptrs[_MAXADDRS + 1]; 77 char *host_aliases[_MAXALIASES]; 78 char hostbuf[_HOSTBUFSIZE]; 79 FILE *hostf; 80 int stayopen; 81 #ifdef YP 82 char *yp_domain; 83 #endif 84 }; 85 86 struct netent_data { 87 char *net_aliases[_MAXALIASES]; 88 char netbuf[_NETBUFSIZE]; 89 FILE *netf; 90 int stayopen; 91 #ifdef YP 92 char *yp_domain; 93 #endif 94 }; 95 96 struct protoent_data { 97 FILE *fp; 98 char *aliases[_MAXALIASES]; 99 int stayopen; 100 char line[_MAXLINELEN + 1]; 101 }; 102 103 struct hostdata { 104 struct hostent host; 105 char data[sizeof(struct hostent_data)]; 106 }; 107 108 struct netdata { 109 struct netent net; 110 char data[sizeof(struct netent_data)]; 111 }; 112 113 struct protodata { 114 struct protoent proto; 115 char data[sizeof(struct protoent_data)]; 116 }; 117 118 struct hostdata *__hostdata_init(void); 119 struct hostent *__hostent_init(void); 120 struct hostent_data *__hostent_data_init(void); 121 struct netdata *__netdata_init(void); 122 struct netent_data *__netent_data_init(void); 123 struct protodata *__protodata_init(void); 124 struct protoent_data *__protoent_data_init(void); 125 int __copy_hostent(struct hostent *, struct hostent *, char *, size_t); 126 int __copy_netent(struct netent *, struct netent *, char *, size_t); 127 int __copy_protoent(struct protoent *, struct protoent *, char *, size_t); 128 129 void __endprotoent_p(struct protoent_data *); 130 int __getprotoent_p(struct protoent *, struct protoent_data *); 131 void __setprotoent_p(int, struct protoent_data *); 132 void _endhostdnsent(void); 133 void _endhosthtent(struct hostent_data *); 134 void _endnetdnsent(void); 135 void _endnethtent(struct netent_data *); 136 void _map_v4v6_address(const char *, char *); 137 void _map_v4v6_hostent(struct hostent *, char **, char *); 138 void _sethostdnsent(int); 139 void _sethosthtent(int, struct hostent_data *); 140 void _setnetdnsent(int); 141 void _setnethtent(int, struct netent_data *); 142 143 struct hostent *__dns_getanswer(const char *, int, const char *, int); 144 int _dns_gethostbyaddr(void *, void *, va_list); 145 int _dns_gethostbyname(void *, void *, va_list); 146 int _dns_getnetbyaddr(void *, void *, va_list); 147 int _dns_getnetbyname(void *, void *, va_list); 148 int _ht_gethostbyaddr(void *, void *, va_list); 149 int _ht_gethostbyname(void *, void *, va_list); 150 int _ht_getnetbyaddr(void *, void *, va_list); 151 int _ht_getnetbyname(void *, void *, va_list); 152 int _nis_gethostbyaddr(void *, void *, va_list); 153 int _nis_gethostbyname(void *, void *, va_list); 154 int _nis_getnetbyaddr(void *, void *, va_list); 155 int _nis_getnetbyname(void *, void *, va_list); 156 #ifdef NS_CACHING 157 int __proto_id_func(char *, size_t *, va_list, void *); 158 int __proto_marshal_func(char *, size_t *, void *, va_list, void *); 159 int __proto_unmarshal_func(char *, size_t, void *, va_list, void *); 160 #endif 161 162 #endif /* _NETDB_PRIVATE_H_ */ 163