diff options
Diffstat (limited to 'lib/libc/net/res_mkquery.c')
-rw-r--r-- | lib/libc/net/res_mkquery.c | 137 |
1 files changed, 78 insertions, 59 deletions
diff --git a/lib/libc/net/res_mkquery.c b/lib/libc/net/res_mkquery.c index a284562..76786db 100644 --- a/lib/libc/net/res_mkquery.c +++ b/lib/libc/net/res_mkquery.c @@ -1,7 +1,9 @@ -/*- +/* + * ++Copyright++ 1985, 1993 + * - * Copyright (c) 1985, 1993 - * The Regents of the University of California. All rights reserved. - * + * 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: @@ -12,12 +14,12 @@ * 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. + * 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 @@ -53,36 +55,53 @@ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93"; -static char rcsid[] = "$Id: res_mkquery.c,v 4.9.1.2 1993/05/17 10:00:01 vixie Exp $"; +static char rcsid[] = "$Id: res_mkquery.c,v 8.3 1995/06/29 09:26:28 vixie Exp $"; #endif /* LIBC_SCCS and not lint */ #include <sys/param.h> #include <netinet/in.h> #include <arpa/nameser.h> -#include <resolv.h> + #include <stdio.h> -#include <string.h> +#include <netdb.h> +#include <resolv.h> +#if defined(BSD) && (BSD >= 199103) +# include <string.h> +#else +# include "../conf/portability.h" +#endif + +#if defined(USE_OPTIONS_H) +# include <../conf/options.h> +#endif /* * Form all types of queries. * Returns the size of the result or -1. */ +int res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) int op; /* opcode of query */ - const char *dname; /* domain name */ + const char *dname; /* domain name */ int class, type; /* class and type of query */ - const char *data; /* resource record data */ + const u_char *data; /* resource record data */ int datalen; /* length of data */ - const char *newrr_in; /* new rr for modify or append */ - char *buf; /* buffer to put query */ + const u_char *newrr_in; /* new rr for modify or append */ + u_char *buf; /* buffer to put query */ int buflen; /* size of buffer */ { register HEADER *hp; - register char *cp; + register u_char *cp; register int n; +#ifdef ALLOW_UPDATES struct rrec *newrr = (struct rrec *) newrr_in; - char *dnptrs[10], **dpp, **lastdnptr; +#endif + u_char *dnptrs[20], **dpp, **lastdnptr; + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (-1); + } #ifdef DEBUG if (_res.options & RES_DEBUG) printf(";; res_mkquery(%d, %s, %d, %d)\n", @@ -91,37 +110,36 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) /* * Initialize header fields. */ - if ((buf == NULL) || (buflen < sizeof(HEADER))) - return(-1); - bzero(buf, sizeof(HEADER)); + if ((buf == NULL) || (buflen < HFIXEDSZ)) + return (-1); + bzero(buf, HFIXEDSZ); hp = (HEADER *) buf; hp->id = htons(++_res.id); hp->opcode = op; - hp->pr = (_res.options & RES_PRIMARY) != 0; hp->rd = (_res.options & RES_RECURSE) != 0; hp->rcode = NOERROR; - cp = buf + sizeof(HEADER); - buflen -= sizeof(HEADER); + cp = buf + HFIXEDSZ; + buflen -= HFIXEDSZ; dpp = dnptrs; *dpp++ = buf; *dpp++ = NULL; - lastdnptr = dnptrs + sizeof(dnptrs)/sizeof(dnptrs[0]); + lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0]; /* * perform opcode specific processing */ switch (op) { - case QUERY: + case QUERY: /*FALLTHROUGH*/ + case NS_NOTIFY_OP: if ((buflen -= QFIXEDSZ) < 0) - return(-1); - if ((n = dn_comp((u_char *)dname, (u_char *)cp, buflen, - (u_char **)dnptrs, (u_char **)lastdnptr)) < 0) + return (-1); + if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0) return (-1); cp += n; buflen -= n; - __putshort(type, (u_char *)cp); - cp += sizeof(u_int16_t); - __putshort(class, (u_char *)cp); - cp += sizeof(u_int16_t); + __putshort(type, cp); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; hp->qdcount = htons(1); if (op == QUERY || data == NULL) break; @@ -129,19 +147,19 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) * Make an additional record for completion domain. */ buflen -= RRFIXEDSZ; - if ((n = dn_comp((u_char *)data, (u_char *)cp, buflen, - (u_char **)dnptrs, (u_char **)lastdnptr)) < 0) + n = dn_comp((char *)data, cp, buflen, dnptrs, lastdnptr); + if (n < 0) return (-1); cp += n; buflen -= n; - __putshort(T_NULL, (u_char *)cp); - cp += sizeof(u_int16_t); - __putshort(class, (u_char *)cp); - cp += sizeof(u_int16_t); - __putlong(0, (u_char *)cp); - cp += sizeof(u_int32_t); - __putshort(0, (u_char *)cp); - cp += sizeof(u_int16_t); + __putshort(T_NULL, cp); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; + __putlong(0, cp); + cp += INT32SZ; + __putshort(0, cp); + cp += INT16SZ; hp->arcount = htons(1); break; @@ -152,14 +170,14 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) if (buflen < 1 + RRFIXEDSZ + datalen) return (-1); *cp++ = '\0'; /* no domain name */ - __putshort(type, (u_char *)cp); - cp += sizeof(u_int16_t); - __putshort(class, (u_char *)cp); - cp += sizeof(u_int16_t); - __putlong(0, (u_char *)cp); - cp += sizeof(u_int32_t); - __putshort(datalen, (u_char *)cp); - cp += sizeof(u_int16_t); + __putshort(type, cp); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; + __putlong(0, cp); + cp += INT32SZ; + __putshort(datalen, cp); + cp += INT16SZ; if (datalen) { bcopy(data, cp, datalen); cp += datalen; @@ -187,13 +205,13 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) return (-1); cp += n; __putshort(type, cp); - cp += sizeof(u_int16_t); - __putshort(class, cp); - cp += sizeof(u_int16_t); + cp += INT16SZ; + __putshort(class, cp); + cp += INT16SZ; __putlong(0, cp); - cp += sizeof(u_int32_t); + cp += INT32SZ; __putshort(datalen, cp); - cp += sizeof(u_int16_t); + cp += INT16SZ; if (datalen) { bcopy(data, cp, datalen); cp += datalen; @@ -210,21 +228,22 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen) return (-1); cp += n; __putshort(newrr->r_type, cp); - cp += sizeof(u_int16_t); - __putshort(newrr->r_class, cp); - cp += sizeof(u_int16_t); + cp += INT16SZ; + __putshort(newrr->r_class, cp); + cp += INT16SZ; __putlong(0, cp); - cp += sizeof(u_int32_t); + cp += INT32SZ; __putshort(newrr->r_size, cp); - cp += sizeof(u_int16_t); + cp += INT16SZ; if (newrr->r_size) { bcopy(newrr->r_data, cp, newrr->r_size); cp += newrr->r_size; } hp->ancount = htons(0); break; - #endif /* ALLOW_UPDATES */ + default: + return (-1); } return (cp - buf); } |