Annotation of src/include/netdb.h, Revision 1.29
1.29 ! sobrado 1: /* $OpenBSD: netdb.h,v 1.28 2011/04/05 00:46:06 matthew Exp $ */
1.3 downsj 2:
1.2 dm 3: /*
4: * ++Copyright++ 1980, 1983, 1988, 1993
5: * -
6: * Copyright (c) 1980, 1983, 1988, 1993
7: * The Regents of the University of California. All rights reserved.
1.1 deraadt 8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
1.18 millert 17: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
1.2 dm 32: * -
33: * Portions Copyright (c) 1993 by Digital Equipment Corporation.
1.1 deraadt 34: *
1.2 dm 35: * Permission to use, copy, modify, and distribute this software for any
36: * purpose with or without fee is hereby granted, provided that the above
37: * copyright notice and this permission notice appear in all copies, and that
38: * the name of Digital Equipment Corporation not be used in advertising or
39: * publicity pertaining to distribution of the document or software without
40: * specific, written prior permission.
41: *
42: * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
43: * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
44: * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
45: * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
46: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
47: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
48: * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
49: * SOFTWARE.
50: * -
51: * --Copyright--
52: */
53:
54: /*
1.13 deraadt 55: * Copyright (c) 1995, 1996, 1997, 1998, 1999 Craig Metz. All rights reserved.
56: *
57: * Redistribution and use in source and binary forms, with or without
58: * modification, are permitted provided that the following conditions
59: * are met:
60: * 1. Redistributions of source code must retain the above copyright
61: * notice, this list of conditions and the following disclaimer.
62: * 2. Redistributions in binary form must reproduce the above copyright
63: * notice, this list of conditions and the following disclaimer in the
64: * documentation and/or other materials provided with the distribution.
65: * 3. Neither the name of the author nor the names of any contributors
66: * may be used to endorse or promote products derived from this software
67: * without specific prior written permission.
68: *
69: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
70: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
71: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
72: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
73: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
74: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
75: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
76: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
77: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
78: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
79: * SUCH DAMAGE.
1.5 deraadt 80: */
81:
82: /*
1.2 dm 83: * @(#)netdb.h 8.1 (Berkeley) 6/2/93
1.3 downsj 84: * $From: netdb.h,v 8.7 1996/05/09 05:59:09 vixie Exp $
1.1 deraadt 85: */
86:
87: #ifndef _NETDB_H_
88: #define _NETDB_H_
89:
1.2 dm 90: #include <sys/param.h>
91: #include <sys/cdefs.h>
92:
1.1 deraadt 93: #define _PATH_HEQUIV "/etc/hosts.equiv"
94: #define _PATH_HOSTS "/etc/hosts"
95: #define _PATH_NETWORKS "/etc/networks"
96: #define _PATH_PROTOCOLS "/etc/protocols"
97: #define _PATH_SERVICES "/etc/services"
98:
1.2 dm 99: extern int h_errno;
100:
1.1 deraadt 101: /*
102: * Structures returned by network data base library. All addresses are
103: * supplied in host order, and returned in network order (suitable for
104: * use in system calls).
105: */
106: struct hostent {
107: char *h_name; /* official name of host */
108: char **h_aliases; /* alias list */
109: int h_addrtype; /* host address type */
110: int h_length; /* length of address */
111: char **h_addr_list; /* list of addresses from name server */
1.17 deraadt 112: #define h_addr h_addr_list[0] /* address, for backward compatibility */
1.1 deraadt 113: };
114:
115: /*
116: * Assumption here is that a network number
1.4 millert 117: * fits in an in_addr_t -- probably a poor one.
1.1 deraadt 118: */
119: struct netent {
120: char *n_name; /* official name of net */
121: char **n_aliases; /* alias list */
122: int n_addrtype; /* net address type */
1.4 millert 123: in_addr_t n_net; /* network # */
1.1 deraadt 124: };
125:
126: struct servent {
127: char *s_name; /* official service name */
128: char **s_aliases; /* alias list */
129: int s_port; /* port # */
130: char *s_proto; /* protocol to use */
131: };
132:
133: struct protoent {
134: char *p_name; /* official protocol name */
135: char **p_aliases; /* alias list */
136: int p_proto; /* protocol # */
137: };
138:
139: /*
140: * Error return codes from gethostbyname() and gethostbyaddr()
141: * (left in extern int h_errno).
142: */
143:
1.2 dm 144: #define NETDB_INTERNAL -1 /* see errno */
145: #define NETDB_SUCCESS 0 /* no problem */
1.1 deraadt 146: #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
1.29 ! sobrado 147: #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
1.1 deraadt 148: #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
149: #define NO_DATA 4 /* Valid name, no data record of requested type */
1.26 jacekm 150: #define NO_ADDRESS NO_DATA /* no address */
1.1 deraadt 151:
1.5 deraadt 152: /* Values for getaddrinfo() and getnameinfo() */
153: #define AI_PASSIVE 1 /* socket address is intended for bind() */
154: #define AI_CANONNAME 2 /* request for canonical name */
1.19 itojun 155: #define AI_NUMERICHOST 4 /* don't ever try hostname lookup */
1.6 cmetz 156: #define AI_EXT 8 /* enable non-portable extensions */
1.19 itojun 157: #define AI_NUMERICSERV 16 /* don't ever try servname lookup */
1.28 matthew 158: #define AI_FQDN 32 /* return the FQDN that was resolved */
1.9 itojun 159: /* valid flags for addrinfo */
1.19 itojun 160: #define AI_MASK \
1.28 matthew 161: (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | AI_FQDN)
1.5 deraadt 162:
163: #define NI_NUMERICHOST 1 /* return the host address, not the name */
164: #define NI_NUMERICSERV 2 /* return the service address, not the name */
165: #define NI_NOFQDN 4 /* return a short name if in the local domain */
166: #define NI_NAMEREQD 8 /* fail if either host or service name is unknown */
167: #define NI_DGRAM 16 /* look up datagram service instead of stream */
168:
1.7 deraadt 169: #define NI_MAXHOST MAXHOSTNAMELEN /* max host name returned by getnameinfo */
1.5 deraadt 170: #define NI_MAXSERV 32 /* max serv. name length returned by getnameinfo */
171:
1.8 itojun 172: /*
173: * Scope delimit character (KAME hack)
174: */
1.9 itojun 175: #define SCOPE_DELIMITER '%'
1.8 itojun 176:
1.5 deraadt 177: #define EAI_BADFLAGS -1 /* invalid value for ai_flags */
178: #define EAI_NONAME -2 /* name or service is not known */
179: #define EAI_AGAIN -3 /* temporary failure in name resolution */
180: #define EAI_FAIL -4 /* non-recoverable failure in name resolution */
181: #define EAI_NODATA -5 /* no address associated with name */
182: #define EAI_FAMILY -6 /* ai_family not supported */
183: #define EAI_SOCKTYPE -7 /* ai_socktype not supported */
184: #define EAI_SERVICE -8 /* service not supported for ai_socktype */
185: #define EAI_ADDRFAMILY -9 /* address family for name not supported */
186: #define EAI_MEMORY -10 /* memory allocation failure */
187: #define EAI_SYSTEM -11 /* system error (code indicated in errno) */
1.8 itojun 188: #define EAI_BADHINTS -12 /* invalid value for hints */
189: #define EAI_PROTOCOL -13 /* resolved protocol is unknown */
1.27 jasper 190: #define EAI_OVERFLOW -14 /* argument buffer overflow */
1.5 deraadt 191:
192: struct addrinfo {
193: int ai_flags; /* input flags */
194: int ai_family; /* protocol family for socket */
195: int ai_socktype; /* socket type */
196: int ai_protocol; /* protocol for socket */
1.12 itojun 197: socklen_t ai_addrlen; /* length of socket-address */
1.5 deraadt 198: struct sockaddr *ai_addr; /* socket-address for socket */
199: char *ai_canonname; /* canonical name for service location (iff req) */
200: struct addrinfo *ai_next; /* pointer to next in list */
201: };
202:
1.14 jakob 203: /*
204: * Flags for getrrsetbyname()
205: */
206: #define RRSET_VALIDATED 1
207:
208: /*
209: * Return codes for getrrsetbyname()
210: */
211: #define ERRSET_SUCCESS 0
212: #define ERRSET_NOMEMORY 1
213: #define ERRSET_FAIL 2
214: #define ERRSET_INVAL 3
215: #define ERRSET_NONAME 4
216: #define ERRSET_NODATA 5
217:
218: /*
219: * Structures used by getrrsetbyname() and freerrset()
220: */
221: struct rdatainfo {
222: unsigned int rdi_length; /* length of data */
223: unsigned char *rdi_data; /* record data */
224: };
225:
226: struct rrsetinfo {
227: unsigned int rri_flags; /* RRSET_VALIDATED ... */
228: unsigned int rri_rdclass; /* class number */
229: unsigned int rri_rdtype; /* RR type number */
230: unsigned int rri_ttl; /* time to live */
231: unsigned int rri_nrdatas; /* size of rdatas array */
232: unsigned int rri_nsigs; /* size of sigs array */
233: char *rri_name; /* canonical name */
234: struct rdatainfo *rri_rdatas; /* individual records */
235: struct rdatainfo *rri_sigs; /* individual signatures */
236: };
237:
1.25 millert 238: #if __BSD_VISIBLE
1.20 millert 239: struct servent_data {
1.21 millert 240: void *fp;
1.20 millert 241: char **aliases;
242: int maxaliases;
243: int stayopen;
244: char *line;
245: };
246:
247: struct protoent_data {
1.21 millert 248: void *fp;
1.20 millert 249: char **aliases;
250: int maxaliases;
251: int stayopen;
252: char *line;
253: };
254: #endif
255:
1.1 deraadt 256: __BEGIN_DECLS
1.15 millert 257: void endhostent(void);
258: void endnetent(void);
259: void endprotoent(void);
1.25 millert 260: #if __BSD_VISIBLE
1.20 millert 261: void endprotoent_r(struct protoent_data *);
262: #endif
1.15 millert 263: void endservent(void);
1.25 millert 264: #if __BSD_VISIBLE
1.20 millert 265: void endservent_r(struct servent_data *);
266: #endif
1.24 millert 267: struct hostent *gethostbyaddr(const void *, socklen_t, int);
1.15 millert 268: struct hostent *gethostbyname(const char *);
269: struct hostent *gethostbyname2(const char *, int);
270: struct hostent *gethostent(void);
271: struct netent *getnetbyaddr(in_addr_t, int);
272: struct netent *getnetbyname(const char *);
273: struct netent *getnetent(void);
274: struct protoent *getprotobyname(const char *);
275: struct protoent *getprotobynumber(int);
276: struct protoent *getprotoent(void);
1.25 millert 277: #if __BSD_VISIBLE
1.21 millert 278: int getprotobyname_r(const char *, struct protoent *,
1.20 millert 279: struct protoent_data *);
1.21 millert 280: int getprotobynumber_r(int, struct protoent *,
1.20 millert 281: struct protoent_data *);
1.21 millert 282: int getprotoent_r(struct protoent *, struct protoent_data *);
1.20 millert 283: #endif
1.15 millert 284: struct servent *getservbyname(const char *, const char *);
285: struct servent *getservbyport(int, const char *);
286: struct servent *getservent(void);
1.25 millert 287: #if __BSD_VISIBLE
1.21 millert 288: int getservbyname_r(const char *, const char *, struct servent *,
1.20 millert 289: struct servent_data *);
1.21 millert 290: int getservbyport_r(int, const char *, struct servent *,
1.20 millert 291: struct servent_data *);
1.21 millert 292: int getservent_r(struct servent *, struct servent_data *);
1.20 millert 293: #endif
1.15 millert 294: void herror(const char *);
295: const char *hstrerror(int);
296: void sethostent(int);
297: /* void sethostfile(const char *); */
298: void setnetent(int);
299: void setprotoent(int);
1.25 millert 300: #if __BSD_VISIBLE
1.20 millert 301: void setprotoent_r(int, struct protoent_data *);
302: #endif
1.15 millert 303: void setservent(int);
1.25 millert 304: #if __BSD_VISIBLE
1.20 millert 305: void setservent_r(int, struct servent_data *);
306: #endif
1.5 deraadt 307:
1.16 millert 308: int getaddrinfo(const char *, const char *,
309: const struct addrinfo *, struct addrinfo **);
1.15 millert 310: void freeaddrinfo(struct addrinfo *);
1.16 millert 311: int getnameinfo(const struct sockaddr *, socklen_t,
312: char *, size_t, char *, size_t, int);
1.23 millert 313: const char *gai_strerror(int);
1.15 millert 314: int net_addrcmp(struct sockaddr *, struct sockaddr *);
1.14 jakob 315: int getrrsetbyname(const char *, unsigned int, unsigned int, unsigned int, struct rrsetinfo **);
316: void freerrset(struct rrsetinfo *);
1.1 deraadt 317: __END_DECLS
1.2 dm 318:
319: /* This is nec'y to make this include file properly replace the sun version. */
320: #ifdef sun
321: #ifdef __GNU_LIBRARY__
322: #include <rpc/netdb.h>
323: #else
324: struct rpcent {
325: char *r_name; /* name of server for this rpc program */
326: char **r_aliases; /* alias list */
327: int r_number; /* rpc program number */
328: };
329: struct rpcent *getrpcbyname(), *getrpcbynumber(), *getrpcent();
330: #endif /* __GNU_LIBRARY__ */
331: #endif /* sun */
1.1 deraadt 332:
333: #endif /* !_NETDB_H_ */
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