#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: res_data.c,v 1.3 2003/02/25 19:03:07 majka Exp $";
#endif
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <ctype.h>
#include <netdb.h>
#include <resolv.h>
#include <res_update.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "res_private.h"
const char *__res_opcodes[] = {
"QUERY",
"IQUERY",
"CQUERYM",
"CQUERYU",
"NOTIFY",
"UPDATE",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"ZONEINIT",
"ZONEREF",
};
void
__h_errno_set(struct __res_state *res, int err)
{
h_errno = res->res_h_errno = err;
}
void
res_client_close(res_state res)
{
if (res == NULL) return;
if (res->_u._ext.ext != NULL) free(res->_u._ext.ext);
free(res);
}
res_state
res_client_open(char *path)
{
extern int res_vinit_from_file(res_state, int, char *);
res_state x;
int status;
x = (res_state)calloc(1, sizeof(struct __res_state));
if (x == NULL) return NULL;
x->retrans = RES_TIMEOUT;
x->retry = 4;
x->options = RES_DEFAULT;
x->id = res_randomid();
status = res_vinit_from_file(x, 1, path);
if (status != 0)
{
res_client_close(x);
return NULL;
}
return x;
}
int
res_init(void)
{
extern int __res_vinit(res_state, int);
if (!_res.retrans) _res.retrans = RES_TIMEOUT;
if (!_res.retry) _res.retry = 4;
if (!(_res.options & RES_INIT)) _res.options = RES_DEFAULT;
if (!_res.id) _res.id = res_randomid();
return (__res_vinit(&_res, 1));
}
int
res_query(const char *name, int class, int type, u_char *answer, int anslen)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1))
{
RES_SET_H_ERRNO(&_res, NETDB_INTERNAL);
return -1;
}
return (res_nquery(&_res, name, class, type, answer, anslen));
}
void
fp_nquery(const u_char *msg, int len, FILE *file)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1)) return;
res_pquery(&_res, msg, len, file);
}
void
fp_query(const u_char *msg, FILE *file)
{
fp_nquery(msg, NS_PACKETSZ, file);
}
void
p_query(const u_char *msg)
{
fp_query(msg, stdout);
}
const char *
hostalias(const char *name)
{
static char abuf[NS_MAXDNAME];
return (res_hostalias(&_res, name, abuf, sizeof abuf));
}
void
res_close(void)
{
res_nclose(&_res);
}
int
res_isourserver(const struct sockaddr_in *inp)
{
return (res_ourserver_p(&_res, (const struct sockaddr *)inp));
}
int
res_nisourserver(const res_state res, const struct sockaddr_in *inp)
{
return (res_ourserver_p(res, (const struct sockaddr *)inp));
}
int
res_mkquery(int op, const char *dname, int class, int type, const u_char *data, int datalen, const u_char *newrr_in, u_char *buf, int buflen)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1))
{
RES_SET_H_ERRNO(&_res, NETDB_INTERNAL);
return -1;
}
return res_nmkquery(&_res, op, dname, class, type, data, datalen, newrr_in, buf, buflen);
}
int
res_querydomain(const char *name, const char *domain, int class, int type, u_char *answer, int anslen)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1))
{
RES_SET_H_ERRNO(&_res, NETDB_INTERNAL);
return -1;
}
return res_nquerydomain(&_res, name, domain, class, type, answer, anslen);
}
int
res_search(const char *name, int class, int type, u_char *answer, int anslen)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1))
{
RES_SET_H_ERRNO(&_res, NETDB_INTERNAL);
return -1;
}
return res_nsearch(&_res, name, class, type, answer, anslen);
}
int
res_send(const u_char *buf, int buflen, u_char *ans, int anssiz)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1))
{
return -1;
}
return res_nsend(&_res, buf, buflen, ans, anssiz);
}
int
res_sendsigned(const u_char *buf, int buflen, ns_tsig_key *key, u_char *ans, int anssiz)
{
if (((_res.options & RES_INIT) == 0) && (res_init() == -1))
{
return -1;
}
return res_nsendsigned(&_res, buf, buflen, key, ans, anssiz);
}