--- /dev/null
+/*
+
+@doc
+
+@module resolv.h |
+ * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
+ * All rights reserved. <nl>
+
+ Structure definitions for resolver functions and #define statements
+
+*/
+
+/*
+ * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)resolv.h 5.15 (Berkeley) 4/3/91
+ */
+
+#ifndef _RESOLV_H_
+#define _RESOLV_H_
+
+#if defined(_WINDOWS) || defined(_WIN32)
+#include <windows.h>
+#endif
+
+/*
+ * Resolver configuration file.
+ * Normally not present, but may contain the address of the
+ * inital name server(s) to query and the domain search list.
+ */
+
+#ifndef _PATH_RESCONF
+#if defined(_WINDOWS) || defined(_WIN32)
+#define _PATH_RESCONF "c:\\net\\tcp\\resolv.cfg"
+#else
+#define _PATH_RESCONF "/etc/resolv.conf"
+#endif
+#endif
+
+#ifndef MAXDNAME
+#include <arpa/nameser.h>
+#endif
+
+/*
+ * Global defines and variables for resolver stub.
+ */
+#define MAXNS 3 /* max # name servers we'll track */
+#define MAXDFLSRCH 3 /* # default domain levels to try */
+#define MAXDNSRCH 6 /* max # domains in search path */
+#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
+
+#define RES_TIMEOUT 5 /* min. seconds between retries */
+
+// new
+#define MAXMXRECS 8
+
+struct mxent {
+ int numrecs;
+ u_short pref[MAXMXRECS];
+ char FAR * FAR * hostname;
+};
+
+
+/*
+
+ @struct state | This structure holds the state for the resolver query
+
+ */
+struct state {
+ int retrans; /* @field retransmition time interval */
+ int retry; /* @field number of times to retransmit */
+ long options; /* @field option flags - see below. */
+ int nscount; /* @field number of name servers */
+ struct sockaddr_in nsaddr_list[MAXNS]; /* @field address of name server */
+#define nsaddr nsaddr_list[0] /* @field for backward compatibility */
+ u_short id; /* @field current packet id */
+ char defdname[MAXDNAME]; /* @field default domain */
+ char *dnsrch[MAXDNSRCH+1]; /* @field components of domain to search */
+};
+
+/*
+ * Resolver options
+ */
+#define RES_INIT 0x0001 /* address initialized */
+#define RES_DEBUG 0x0002 /* print debug messages */
+#define RES_AAONLY 0x0004 /* authoritative answers only */
+#define RES_USEVC 0x0008 /* use virtual circuit */
+#define RES_PRIMARY 0x0010 /* query primary server only */
+#define RES_IGNTC 0x0020 /* ignore trucation errors */
+#define RES_RECURSE 0x0040 /* recursion desired */
+#define RES_DEFNAMES 0x0080 /* use default domain name */
+#define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
+#define RES_DNSRCH 0x0200 /* search up local domain tree */
+
+#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
+
+extern struct state _res;
+
+#include <stdio.h>
+
+/* Private routines shared between libc/net, named, nslookup and others. */
+#define dn_skipname __dn_skipname
+#define fp_query __fp_query
+#define hostalias __hostalias
+#define putlong __putlong
+#define putshort __putshort
+#define p_class __p_class
+#define p_time __p_time
+#define p_type __p_type
+
+#if defined(_WINDOWS) || defined(_WIN32)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int WINAPI res_init();
+void WINAPI res_setopts(long opts);
+long WINAPI res_getopts(void);
+int WINAPI res_mkquery(int op, const char FAR *dname,
+ int qclass, int type,
+ const char FAR *data, int datalen,
+ const struct rrec FAR *newrr,
+ char FAR *buf, int buflen);
+int WINAPI res_send(const char FAR *msg, int msglen,
+ char FAR *answer, int anslen);
+int WINAPI res_querydomain(const char FAR *name,
+ const char FAR *domain,
+ int qclass, int type,
+ u_char FAR *answer, int anslen);
+int WINAPI res_search(const char FAR *name,
+ int qclass, int type,
+ u_char FAR *answer, int anslen);
+
+int WINAPI dn_comp(const u_char FAR *exp_dn,
+ u_char FAR *comp_dn,
+ int length, u_char FAR * FAR *dnptrs,
+ u_char FAR * FAR *lastdnptr);
+int WINAPI rdn_expand(const u_char FAR *msg,
+ const u_char FAR *eomorig,
+ const u_char FAR *comp_dn,
+ u_char FAR *exp_dn,
+ int length);
+/* Microsoft includes an implementation of dn_expand() in winsock */
+/* Make sure we do not use it. jaltman@columbia.edu */
+#define dn_expand(a,b,c,d,e) rdn_expand(a,b,c,d,e)
+
+#ifdef __cplusplus
+}
+#endif
+#else
+__BEGIN_DECLS
+int __dn_skipname __P((const u_char *, const u_char *));
+void __fp_query __P((char *, FILE *));
+char *__hostalias __P((const char *));
+void __putlong __P((u_long, u_char *));
+void __putshort __P((u_short, u_char *));
+char *__p_class __P((int));
+char *__p_time __P((u_long));
+char *__p_type __P((int));
+
+int dn_comp __P((const u_char *, u_char *, int, u_char **, u_char **));
+int rdn_expand __P((const u_char *, const u_char *, const u_char *,
+ u_char *, int));
+int res_init __P((void));
+int res_mkquery __P((int, const char *, int, int, const char *, int,
+ const struct rrec *, char *, int));
+int res_send __P((const char *, int, char *, int));
+__END_DECLS
+#endif /* _WINDOWS || _WIN32 */
+
+#endif /* !_RESOLV_H_ */
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