oldbind.compat.c
上传用户:xu_441
上传日期:2007-01-04
资源大小:1640k
文件大小:1k
- /*
- ** OLDBIND.COMPAT.C
- **
- ** Very old systems do not have res_query(), res_querydomain() or
- ** res_search(), so emulate them here.
- **
- ** You really ought to be upgrading to a newer version of BIND
- ** (4.8.2 or later) rather than be using this.
- **
- ** J.R. Oldroyd <jr@inset.com>
- */
- #include <sys/types.h>
- #include <netinet/in.h>
- #include <arpa/nameser.h>
- #include <resolv.h>
- typedef union
- {
- HEADER qb1;
- char qb2[PACKETSZ];
- } querybuf;
- res_query(dname, class, type, data, datalen)
- char * dname;
- int class;
- int type;
- char * data;
- int datalen;
- {
- int n;
- querybuf buf;
- n = res_mkquery(QUERY, dname, class, type, (char *) NULL, 0,
- NULL, (char *) &buf, sizeof buf);
- n = res_send((char *)&buf, n, data, datalen);
- return n;
- }
- res_querydomain(host, dname, class, type, data, datalen)
- char * host;
- char * dname;
- int class;
- int type;
- char * data;
- int datalen;
- {
- int n;
- querybuf buf;
- char dbuf[256];
- strcpy(dbuf, host);
- if (dbuf[strlen(dbuf)-1] != '.')
- strcat(dbuf, ".");
- strcat(dbuf, dname);
- n = res_mkquery(QUERY, dbuf, class, type, (char *) NULL, 0,
- NULL, (char *)&buf, sizeof buf);
- n = res_send((char *) &buf, n, data, datalen);
- return n;
- }
- res_search(dname, class, type, data, datalen)
- char * dname;
- int class;
- int type;
- char * data;
- int datalen;
- {
- int n;
- querybuf buf;
- n = res_mkquery(QUERY, dname, class, type, (char *)NULL, 0,
- NULL, (char *) &buf, sizeof buf);
- n = res_send((char *) &buf, n, data, datalen);
- return n;
- }