headers/posix/netdb.h

   1 /*
   2  * Copyright 2002-2012 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 /*
   7  * Copyright (c) 1980, 1983, 1988, 1993
   8  *      The Regents of the University of California.  All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  * -
  38  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
  39  *
  40  * Permission to use, copy, modify, and distribute this software for any
  41  * purpose with or without fee is hereby granted, provided that the above
  42  * copyright notice and this permission notice appear in all copies, and that
  43  * the name of Digital Equipment Corporation not be used in advertising or
  44  * publicity pertaining to distribution of the document or software without
  45  * specific, written prior permission.
  46  *
  47  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  48  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  49  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
  50  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  51  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  52  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  53  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  54  * SOFTWARE.
  55  * -
  56  * Portions Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  57  * All rights reserved.
  58  *
  59  * Redistribution and use in source and binary forms, with or without
  60  * modification, are permitted provided that the following conditions
  61  * are met:
  62  * 1. Redistributions of source code must retain the above copyright
  63  *    notice, this list of conditions and the following disclaimer.
  64  * 2. Redistributions in binary form must reproduce the above copyright
  65  *    notice, this list of conditions and the following disclaimer in the
  66  *    documentation and/or other materials provided with the distribution.
  67  * 3. All advertising materials mentioning features or use of this software
  68  *    must display the following acknowledgement:
  69  *    This product includes software developed by WIDE Project and
  70  *    its contributors.
  71  * 4. Neither the name of the project nor the names of its contributors
  72  *    may be used to endorse or promote products derived from this software
  73  *    without specific prior written permission.
  74  *
  75  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  76  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  77  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  78  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  79  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  80  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  81  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  82  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  83  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  84  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  85  * SUCH DAMAGE.
  86  */
  87 #ifndef _NETDB_H_
  88 #define _NETDB_H_
  89
  90
  91 #include <sys/param.h>
  92 #include <sys/types.h>
  93 #include <sys/cdefs.h>
  94 #include <sys/socket.h>
  95 #include <netinet/in.h>
  96 #include <stdio.h>
  97
  98 #ifndef _PATH_NETWORKS
  99 #define _PATH_NETWORKS  "/etc/networks"
 100 #endif
 101
 102
 103 __BEGIN_DECLS
 104 extern int * __h_errno(void);
 105 __END_DECLS
 106 #define h_errno (*__h_errno())
 107
 108 /*
 109  * Structures returned by network data base library.  All addresses are
 110  * supplied in host order, and returned in network order (suitable for
 111  * use in system calls).
 112  */
 113 struct hostent {
 114         char            *h_name;                        /* official name of host */
 115         char            **h_aliases;            /* alias list */
 116         int                     h_addrtype;                     /* host address type */
 117         int                     h_length;                       /* length of address */
 118         char            **h_addr_list;          /* list of addresses from name server */
 119 #define h_addr  h_addr_list[0]          /* address, for backward compatiblity */
 120 };
 121
 122 /*
 123  * Assumption here is that a network number
 124  * fits in an unsigned long -- probably a poor one.
 125  */
 126 struct netent {
 127         char            *n_name;                        /* official name of net */
 128         char            **n_aliases;            /* alias list */
 129         int                     n_addrtype;                     /* net address type */
 130         in_addr_t       n_net;                          /* network # */
 131 };
 132
 133 struct servent {
 134         char            *s_name;                        /* official service name */
 135         char            **s_aliases;            /* alias list */
 136         int                     s_port;                         /* port # */
 137         char            *s_proto;                       /* protocol to use */
 138 };
 139
 140 struct protoent {
 141         char            *p_name;                        /* official protocol name */
 142         char            **p_aliases;            /* alias list */
 143         int                     p_proto;                        /* protocol # */
 144 };
 145
 146 struct addrinfo {
 147         int                     ai_flags;                       /* AI_PASSIVE, AI_CANONNAME */
 148         int                     ai_family;                      /* PF_xxx */
 149         int                     ai_socktype;            /* SOCK_xxx */
 150         int                     ai_protocol;            /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
 151         socklen_t       ai_addrlen;                     /* length of ai_addr */
 152         char            *ai_canonname;          /* canonical name for hostname */
 153         struct sockaddr *ai_addr;               /* binary address */
 154         struct addrinfo *ai_next;               /* next structure in linked list */
 155 };
 156
 157 /*
 158  * Error return codes from gethostbyname() and gethostbyaddr()
 159  * (left in extern int h_errno).
 160  */
 161 #define NETDB_INTERNAL  -1              /* see errno */
 162 #define NETDB_SUCCESS   0               /* no problem */
 163 #define HOST_NOT_FOUND  1               /* Authoritative Answer Host not found */
 164 #define TRY_AGAIN               2
 165         /* Non-Authoritive Host not found, or SERVERFAIL */
 166 #define NO_RECOVERY             3
 167         /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
 168 #define NO_DATA                 4
 169         /* Valid name, no data record of requested type */
 170 #define NO_ADDRESS              NO_DATA /* no address, look for MX record */
 171
 172 /*
 173  * Error return codes from getaddrinfo()
 174  */
 175 #define EAI_ADDRFAMILY  1       /* address family for hostname not supported */
 176 #define EAI_AGAIN               2       /* temporary failure in name resolution */
 177 #define EAI_BADFLAGS    3       /* invalid value for ai_flags */
 178 #define EAI_FAIL                4       /* non-recoverable failure in name resolution */
 179 #define EAI_FAMILY              5       /* ai_family not supported */
 180 #define EAI_MEMORY              6       /* memory allocation failure */
 181 #define EAI_NODATA              7       /* no address associated with hostname */
 182 #define EAI_NONAME              8       /* hostname nor servname provided, or not known */
 183 #define EAI_SERVICE             9       /* servname not supported for ai_socktype */
 184 #define EAI_SOCKTYPE    10      /* ai_socktype not supported */
 185 #define EAI_SYSTEM              11      /* system error returned in errno */
 186 #define EAI_BADHINTS    12
 187 #define EAI_PROTOCOL    13
 188 #define EAI_OVERFLOW    14
 189 #define EAI_MAX                 15
 190
 191 /*
 192  * Flag values for getaddrinfo()
 193  */
 194 #define AI_PASSIVE              0x00000001
 195 #define AI_CANONNAME    0x00000002
 196 #define AI_NUMERICHOST  0x00000004
 197 #define AI_NUMERICSERV  0x00000008
 198 #define AI_MASK                 \
 199         (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV \
 200                 | AI_ADDRCONFIG)
 201
 202 /*
 203  * Flag values for getipnodebyname()
 204  */
 205 #define AI_ALL                  0x00000100
 206 #define AI_V4MAPPED_CFG 0x00000200
 207 #define AI_ADDRCONFIG   0x00000400
 208 #define AI_V4MAPPED             0x00000800
 209 #define AI_DEFAULT              (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
 210
 211 /*
 212  * Constants for getnameinfo()
 213  */
 214 #define NI_MAXHOST              1025
 215 #define NI_MAXSERV              32
 216
 217 /*
 218  * Flag values for getnameinfo()
 219  */
 220 #define NI_NOFQDN               0x00000001
 221 #define NI_NUMERICHOST  0x00000002
 222 #define NI_NAMEREQD             0x00000004
 223 #define NI_NUMERICSERV  0x00000008
 224 #define NI_DGRAM                0x00000010
 225 #define NI_WITHSCOPEID  0x00000020
 226 #define NI_NUMERICSCOPE 0x00000040
 227
 228 /*
 229  * Scope delimit character
 230  */
 231 #define SCOPE_DELIMITER '%'
 232
 233
 234 __BEGIN_DECLS
 235 void                    endhostent(void);
 236 void                    endnetent(void);
 237 void                    endprotoent(void);
 238 void                    endservent(void);
 239 void                    freehostent(struct hostent *host);
 240 struct hostent  *gethostbyaddr(const char *address, socklen_t length, int type);
 241 struct hostent  *gethostbyname(const char *name);
 242 struct hostent  *gethostbyname2(const char *name, int type);
 243 struct hostent  *gethostent(void);
 244 struct hostent  *getipnodebyaddr(const void *, size_t, int, int *);
 245 struct hostent  *getipnodebyname(const char *, int, int, int *);
 246 struct netent   *getnetbyaddr(uint32_t, int);
 247 struct netent   *getnetbyname(const char *);
 248 struct netent   *getnetent(void);
 249 struct protoent *getprotobyname(const char *);
 250 struct protoent *getprotobynumber(int);
 251 struct protoent *getprotoent(void);
 252 struct servent  *getservbyname(const char *, const char *);
 253 struct servent  *getservbyport(int, const char *);
 254 struct servent  *getservent(void);
 255 void                    herror(const char *);
 256 const char              *hstrerror(int);
 257 void                    sethostent(int);
 258 /* void                 sethostfile(const char *); */
 259 void                    setnetent(int);
 260 void                    setprotoent(int);
 261 void                    setservent(int);
 262 int                             getaddrinfo(const char *, const char *,
 263                                         const struct addrinfo *, struct addrinfo **);
 264 int                             getnameinfo(const struct sockaddr *, socklen_t, char *,
 265                                         socklen_t, char *, socklen_t, int);
 266 struct addrinfo *allocaddrinfo(socklen_t);
 267 void                    freeaddrinfo(struct addrinfo *);
 268 const char              *gai_strerror(int);
 269
 270 struct hostent  *gethostent_r(struct hostent *, char *, int, int *);
 271 void                    sethostent_r(int);
 272 void                    endhostent_r(void);
 273
 274 struct netent   *getnetbyname_r(const char *, struct netent *,
 275                                         char *, int);
 276 struct netent   *getnetbyaddr_r(long, int, struct netent *,
 277                                         char *, int);
 278 struct netent   *getnetent_r(struct netent *, char *, int);
 279 void                    setnetent_r(int);
 280 void                    endnetent_r(void);
 281
 282 struct protoent_data;
 283 struct protoent *getprotobyname_r(const char *,
 284                                 struct protoent *, struct protoent_data *);
 285 struct protoent *getprotobynumber_r(int,
 286                                 struct protoent *, struct protoent_data *);
 287 struct protoent *getprotoent_r(struct protoent *, struct protoent_data *);
 288 void                    setprotoent_r(int, struct protoent_data *);
 289 void                    endprotoent_r(struct protoent_data *);
 290
 291 struct servent_data;
 292 struct servent  *getservbyname_r(const char *name, const char *,
 293                                         struct servent *, struct servent_data *);
 294 struct servent  *getservbyport_r(int port, const char *,
 295                                         struct servent *, struct servent_data *);
 296 struct servent  *getservent_r(struct servent *, struct servent_data *);
 297 void                    setservent_r(int, struct servent_data *);
 298 void                    endservent_r(struct servent_data *);
 299 __END_DECLS
 300
 301 #endif /* _NETDB_H_ */