/* * Copyright (c) 1985 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. */ #if defined(LIBC_SCCS) && !defined(lint) /*static char *sccsid = "from: @(#)res_querydomain.c 6.22 (Berkeley) 3/19/91";*/ static char *rcsid = "$Id: res_querydomain.c,v 1.1 1998/07/21 13:19:47 peter Exp $"; #endif /* LIBC_SCCS and not lint */ #include #include #include /* For backwards compatibility. */ int res_querydomain(char *name, char *domain, int class, int type, unsigned char *answer, int anslen) { char buf[2 * MAXDNAME + 2]; char *longname = buf; int len; if (domain == NULL) { /* Check for trailing '.'; copy without '.' if present. */ len = strlen(name); if (len > 0 && name[len - 1] == '.' && len < sizeof(buf)) { memcpy(buf, name, len - 1); buf[len - 1] = '\0'; } else { longname = name; } } else { sprintf(buf, "%.*s.%.*s", MAXDNAME, name, MAXDNAME, domain); } return (res_query(longname, class, type, answer, anslen)); }