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@@ -1,680 +0,0 @@
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-$Id$
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---- trafshow-5.2.3.orig/domain_resolver.c 2006-01-08 06:59:23.000000000 +0100
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-+++ trafshow-5.2.3/domain_resolver.c 2007-02-04 19:40:27.000000000 +0100
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-@@ -28,6 +28,676 @@
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- #include <resolv.h>
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- #endif
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-
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-+/*
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-+ * Copyright (c) 1985, 1993
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-+ * The Regents of the University of California. All rights reserved.
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-+ *
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-+ * Redistribution and use in source and binary forms, with or without
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-+ * modification, are permitted provided that the following conditions
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-+ * are met:
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-+ * 1. Redistributions of source code must retain the above copyright
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-+ * notice, this list of conditions and the following disclaimer.
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-+ * 2. Redistributions in binary form must reproduce the above copyright
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-+ * notice, this list of conditions and the following disclaimer in the
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-+ * documentation and/or other materials provided with the distribution.
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-+ * 4. Neither the name of the University nor the names of its contributors
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-+ * may be used to endorse or promote products derived from this software
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-+ * without specific prior written permission.
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-+ *
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-+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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-+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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-+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-+ * SUCH DAMAGE.
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-+ */
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-+
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-+/*
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-+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
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-+ *
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-+ * Permission to use, copy, modify, and distribute this software for any
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-+ * purpose with or without fee is hereby granted, provided that the above
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-+ * copyright notice and this permission notice appear in all copies, and that
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-+ * the name of Digital Equipment Corporation not be used in advertising or
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-+ * publicity pertaining to distribution of the document or software without
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-+ * specific, written prior permission.
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-+ *
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-+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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-+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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-+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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-+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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-+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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-+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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-+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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-+ * SOFTWARE.
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-+ */
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-+
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-+/*
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-+ * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
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-+ *
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-+ * Permission to use, copy, modify, and distribute this software for any
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-+ * purpose with or without fee is hereby granted, provided that the above
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-+ * copyright notice and this permission notice appear in all copies.
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-+ *
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-+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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-+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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-+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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-+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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-+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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-+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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-+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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-+ * SOFTWARE.
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-+ */
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-+
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-+/*
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-+ * Copyright (c) 1996,1999 by Internet Software Consortium.
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-+ *
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-+ * Permission to use, copy, modify, and distribute this software for any
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-+ * purpose with or without fee is hereby granted, provided that the above
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-+ * copyright notice and this permission notice appear in all copies.
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-+ *
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-+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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-+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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-+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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-+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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-+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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-+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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-+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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-+ * SOFTWARE.
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-+ */
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-+
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-+/*
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-+ *
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-+ * DNS helper functions not implemented in uclibc
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-+ *
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-+ */
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-+
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-+#include <ctype.h>
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-+#include <unistd.h>
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-+
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-+static const char digits[] = "0123456789";
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-+
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-+/* Forward. */
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-+
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-+static int special(int);
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-+static int printable(int);
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-+static int dn_find(const u_char *, const u_char *,
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-+ const u_char * const *,
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-+ const u_char * const *);
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-+
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-+
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-+/*
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-+ * ns_name_ntop(src, dst, dstsiz)
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-+ * Convert an encoded domain name to printable ascii as per RFC1035.
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-+ * return:
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-+ * Number of bytes written to buffer, or -1 (with errno set)
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-+ * notes:
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-+ * The root is returned as "."
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-+ * All other domains are returned in non absolute form
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-+ */
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-+int
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-+ns_name_ntop(const u_char *src, char *dst, size_t dstsiz) {
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-+ const u_char *cp;
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-+ char *dn, *eom;
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-+ u_char c;
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-+ u_int n;
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-+
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-+ cp = src;
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-+ dn = dst;
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-+ eom = dst + dstsiz;
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-+
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-+ while ((n = *cp++) != 0) {
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-+ if ((n & NS_CMPRSFLGS) != 0) {
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-+ /* Some kind of compression pointer. */
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-+ return (-1);
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-+ }
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-+ if (dn != dst) {
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-+ if (dn >= eom) {
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-+ return (-1);
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-+ }
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-+ *dn++ = '.';
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-+ }
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-+ if (dn + n >= eom) {
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-+ return (-1);
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-+ }
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-+ for ((void)NULL; n > 0; n--) {
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-+ c = *cp++;
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-+ if (special(c)) {
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-+ if (dn + 1 >= eom) {
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-+ return (-1);
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-+ }
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-+ *dn++ = '\\';
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-+ *dn++ = (char)c;
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-+ } else if (!printable(c)) {
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-+ if (dn + 3 >= eom) {
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-+ return (-1);
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-+ }
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-+ *dn++ = '\\';
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-+ *dn++ = digits[c / 100];
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-+ *dn++ = digits[(c % 100) / 10];
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-+ *dn++ = digits[c % 10];
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-+ } else {
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-+ if (dn >= eom) {
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-+ return (-1);
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-+ }
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-+ *dn++ = (char)c;
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-+ }
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-+ }
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-+ }
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-+ if (dn == dst) {
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-+ if (dn >= eom) {
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-+ return (-1);
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-+ }
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-+ *dn++ = '.';
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-+ }
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-+ if (dn >= eom) {
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-+ return (-1);
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-+ }
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-+ *dn++ = '\0';
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-+ return (dn - dst);
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-+}
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-+
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-+/*
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-+ * ns_name_pton(src, dst, dstsiz)
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-+ * Convert a ascii string into an encoded domain name as per RFC1035.
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-+ * return:
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-+ * -1 if it fails
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-+ * 1 if string was fully qualified
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-+ * 0 is string was not fully qualified
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-+ * notes:
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-+ * Enforces label and domain length limits.
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-+ */
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-+
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-+int
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-+ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
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-+ u_char *label, *bp, *eom;
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-+ int c, n, escaped;
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-+ char *cp;
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-+
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-+ escaped = 0;
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-+ bp = dst;
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-+ eom = dst + dstsiz;
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-+ label = bp++;
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-+
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-+ while ((c = *src++) != 0) {
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-+ if (escaped) {
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-+ if ((cp = strchr(digits, c)) != NULL) {
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-+ n = (cp - digits) * 100;
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-+ if ((c = *src++) == 0 ||
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-+ (cp = strchr(digits, c)) == NULL) {
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-+ return (-1);
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-+ }
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-+ n += (cp - digits) * 10;
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-+ if ((c = *src++) == 0 ||
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-+ (cp = strchr(digits, c)) == NULL) {
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-+ return (-1);
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-+ }
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-+ n += (cp - digits);
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-+ if (n > 255) {
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-+ return (-1);
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-+ }
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-+ c = n;
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-+ }
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-+ escaped = 0;
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-+ } else if (c == '\\') {
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-+ escaped = 1;
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-+ continue;
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-+ } else if (c == '.') {
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-+ c = (bp - label - 1);
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-+ if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */
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-+ return (-1);
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-+ }
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-+ if (label >= eom) {
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-+ return (-1);
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-+ }
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-+ *label = c;
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-+ /* Fully qualified ? */
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-+ if (*src == '\0') {
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-+ if (c != 0) {
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-+ if (bp >= eom) {
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-+ return (-1);
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-+ }
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-+ *bp++ = '\0';
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-+ }
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-+ if ((bp - dst) > MAXCDNAME) {
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-+ return (-1);
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-+ }
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-+ return (1);
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-+ }
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-+ if (c == 0 || *src == '.') {
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-+ return (-1);
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-+ }
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-+ label = bp++;
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-+ continue;
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-+ }
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-+ if (bp >= eom) {
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-+ return (-1);
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-+ }
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-+ *bp++ = (u_char)c;
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-+ }
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-+ c = (bp - label - 1);
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-+ if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */
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-+ return (-1);
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-+ }
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-+ if (label >= eom) {
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-+ return (-1);
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-+ }
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-+ *label = c;
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-+ if (c != 0) {
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-+ if (bp >= eom) {
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-+ return (-1);
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-+ }
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-+ *bp++ = 0;
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-+ }
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-+ if ((bp - dst) > MAXCDNAME) { /* src too big */
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-+ return (-1);
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-+ }
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-+ return (0);
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-+}
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-+
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-+/*
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-+ * ns_name_ntol(src, dst, dstsiz)
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-+ * Convert a network strings labels into all lowercase.
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-+ * return:
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-+ * Number of bytes written to buffer, or -1 (with errno set)
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-+ * notes:
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-+ * Enforces label and domain length limits.
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-+ */
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-+
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-+int
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-+ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz) {
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-+ const u_char *cp;
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-+ u_char *dn, *eom;
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-+ u_char c;
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-+ u_int n;
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-+
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-+ cp = src;
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-+ dn = dst;
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-+ eom = dst + dstsiz;
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-+
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-+ while ((n = *cp++) != 0) {
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-+ if ((n & NS_CMPRSFLGS) != 0) {
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-+ /* Some kind of compression pointer. */
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-+ return (-1);
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-+ }
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-+ *dn++ = n;
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-+ if (dn + n >= eom) {
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-+ return (-1);
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-+ }
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-+ for ((void)NULL; n > 0; n--) {
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-+ c = *cp++;
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-+ if (isupper(c))
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-+ *dn++ = tolower(c);
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-+ else
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-+ *dn++ = c;
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-+ }
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-+ }
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-+ *dn++ = '\0';
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-+ return (dn - dst);
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-+}
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-+
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-+/*
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-+ * ns_name_unpack(msg, eom, src, dst, dstsiz)
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-+ * Unpack a domain name from a message, source may be compressed.
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-+ * return:
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-+ * -1 if it fails, or consumed octets if it succeeds.
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-+ */
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-+int
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-+ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
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-+ u_char *dst, size_t dstsiz)
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-+{
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-+ const u_char *srcp, *dstlim;
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-+ u_char *dstp;
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-+ int n, len, checked;
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-+
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-+ len = -1;
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-+ checked = 0;
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-+ dstp = dst;
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-+ srcp = src;
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-+ dstlim = dst + dstsiz;
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-+ if (srcp < msg || srcp >= eom) {
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-+ return (-1);
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-+ }
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-+ /* Fetch next label in domain name. */
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-+ while ((n = *srcp++) != 0) {
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-+ /* Check for indirection. */
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-+ switch (n & NS_CMPRSFLGS) {
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-+ case 0:
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-+ /* Limit checks. */
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-+ if (dstp + n + 1 >= dstlim || srcp + n >= eom) {
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-+ return (-1);
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-+ }
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-+ checked += n + 1;
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-+ *dstp++ = n;
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-+ memcpy(dstp, srcp, n);
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-+ dstp += n;
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-+ srcp += n;
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-+ break;
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-+
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-+ case NS_CMPRSFLGS:
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-+ if (srcp >= eom) {
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-+ return (-1);
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-+ }
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-+ if (len < 0)
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-+ len = srcp - src + 1;
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-+ srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff));
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-+ if (srcp < msg || srcp >= eom) { /* Out of range. */
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-+ return (-1);
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-+ }
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-+ checked += 2;
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-+ /*
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-+ * Check for loops in the compressed name;
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-+ * if we've looked at the whole message,
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-+ * there must be a loop.
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-+ */
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-+ if (checked >= eom - msg) {
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-+ return (-1);
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-+ }
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-+ break;
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-+
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-+ default:
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-+ return (-1); /* flag error */
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-+ }
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-+ }
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-+ *dstp = '\0';
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-+ if (len < 0)
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-+ len = srcp - src;
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-+ return (len);
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-+}
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-+
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-+/*
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-+ * ns_name_pack(src, dst, dstsiz, dnptrs, lastdnptr)
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|
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-+ * Pack domain name 'domain' into 'comp_dn'.
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-+ * return:
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-+ * Size of the compressed name, or -1.
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-+ * notes:
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-+ * 'dnptrs' is an array of pointers to previous compressed names.
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-+ * dnptrs[0] is a pointer to the beginning of the message. The array
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-+ * ends with NULL.
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-+ * 'lastdnptr' is a pointer to the end of the array pointed to
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-+ * by 'dnptrs'.
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-+ * Side effects:
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-+ * The list of pointers in dnptrs is updated for labels inserted into
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|
|
-+ * the message as we compress the name. If 'dnptr' is NULL, we don't
|
|
|
-+ * try to compress names. If 'lastdnptr' is NULL, we don't update the
|
|
|
-+ * list.
|
|
|
-+ */
|
|
|
-+int
|
|
|
-+ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
|
|
|
-+ const u_char **dnptrs, const u_char **lastdnptr)
|
|
|
-+{
|
|
|
-+ u_char *dstp;
|
|
|
-+ const u_char **cpp, **lpp, *eob, *msg;
|
|
|
-+ const u_char *srcp;
|
|
|
-+ int n, l, first = 1;
|
|
|
-+
|
|
|
-+ srcp = src;
|
|
|
-+ dstp = dst;
|
|
|
-+ eob = dstp + dstsiz;
|
|
|
-+ lpp = cpp = NULL;
|
|
|
-+ if (dnptrs != NULL) {
|
|
|
-+ if ((msg = *dnptrs++) != NULL) {
|
|
|
-+ for (cpp = dnptrs; *cpp != NULL; cpp++)
|
|
|
-+ (void)NULL;
|
|
|
-+ lpp = cpp; /* end of list to search */
|
|
|
-+ }
|
|
|
-+ } else
|
|
|
-+ msg = NULL;
|
|
|
-+
|
|
|
-+ /* make sure the domain we are about to add is legal */
|
|
|
-+ l = 0;
|
|
|
-+ do {
|
|
|
-+ n = *srcp;
|
|
|
-+ if ((n & NS_CMPRSFLGS) != 0) {
|
|
|
-+ return (-1);
|
|
|
-+ }
|
|
|
-+ l += n + 1;
|
|
|
-+ if (l > MAXCDNAME) {
|
|
|
-+ return (-1);
|
|
|
-+ }
|
|
|
-+ srcp += n + 1;
|
|
|
-+ } while (n != 0);
|
|
|
-+
|
|
|
-+ /* from here on we need to reset compression pointer array on error */
|
|
|
-+ srcp = src;
|
|
|
-+ do {
|
|
|
-+ /* Look to see if we can use pointers. */
|
|
|
-+ n = *srcp;
|
|
|
-+ if (n != 0 && msg != NULL) {
|
|
|
-+ l = dn_find(srcp, msg, (const u_char * const *)dnptrs,
|
|
|
-+ (const u_char * const *)lpp);
|
|
|
-+ if (l >= 0) {
|
|
|
-+ if (dstp + 1 >= eob) {
|
|
|
-+ goto cleanup;
|
|
|
-+ }
|
|
|
-+ *dstp++ = (l >> 8) | NS_CMPRSFLGS;
|
|
|
-+ *dstp++ = l % 256;
|
|
|
-+ return (dstp - dst);
|
|
|
-+ }
|
|
|
-+ /* Not found, save it. */
|
|
|
-+ if (lastdnptr != NULL && cpp < lastdnptr - 1 &&
|
|
|
-+ (dstp - msg) < 0x4000 && first) {
|
|
|
-+ *cpp++ = dstp;
|
|
|
-+ *cpp = NULL;
|
|
|
-+ first = 0;
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+ /* copy label to buffer */
|
|
|
-+ if (n & NS_CMPRSFLGS) { /* Should not happen. */
|
|
|
-+ goto cleanup;
|
|
|
-+ }
|
|
|
-+ if (dstp + 1 + n >= eob) {
|
|
|
-+ goto cleanup;
|
|
|
-+ }
|
|
|
-+ memcpy(dstp, srcp, n + 1);
|
|
|
-+ srcp += n + 1;
|
|
|
-+ dstp += n + 1;
|
|
|
-+ } while (n != 0);
|
|
|
-+
|
|
|
-+ if (dstp > eob) {
|
|
|
-+cleanup:
|
|
|
-+ if (msg != NULL)
|
|
|
-+ *lpp = NULL;
|
|
|
-+ return (-1);
|
|
|
-+ }
|
|
|
-+ return (dstp - dst);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * ns_name_uncompress(msg, eom, src, dst, dstsiz)
|
|
|
-+ * Expand compressed domain name to presentation format.
|
|
|
-+ * return:
|
|
|
-+ * Number of bytes read out of `src', or -1 (with errno set).
|
|
|
-+ * note:
|
|
|
-+ * Root domain returns as "." not "".
|
|
|
-+ */
|
|
|
-+int
|
|
|
-+ns_name_uncompress(const u_char *msg, const u_char *eom, const u_char *src,
|
|
|
-+ char *dst, size_t dstsiz)
|
|
|
-+{
|
|
|
-+ u_char tmp[NS_MAXCDNAME];
|
|
|
-+ int n;
|
|
|
-+
|
|
|
-+ if ((n = ns_name_unpack(msg, eom, src, tmp, sizeof tmp)) == -1)
|
|
|
-+ return (-1);
|
|
|
-+ if (ns_name_ntop(tmp, dst, dstsiz) == -1)
|
|
|
-+ return (-1);
|
|
|
-+ return (n);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * ns_name_compress(src, dst, dstsiz, dnptrs, lastdnptr)
|
|
|
-+ * Compress a domain name into wire format, using compression pointers.
|
|
|
-+ * return:
|
|
|
-+ * Number of bytes consumed in `dst' or -1 (with errno set).
|
|
|
-+ * notes:
|
|
|
-+ * 'dnptrs' is an array of pointers to previous compressed names.
|
|
|
-+ * dnptrs[0] is a pointer to the beginning of the message.
|
|
|
-+ * The list ends with NULL. 'lastdnptr' is a pointer to the end of the
|
|
|
-+ * array pointed to by 'dnptrs'. Side effect is to update the list of
|
|
|
-+ * pointers for labels inserted into the message as we compress the name.
|
|
|
-+ * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
|
|
|
-+ * is NULL, we don't update the list.
|
|
|
-+ */
|
|
|
-+int
|
|
|
-+ns_name_compress(const char *src, u_char *dst, size_t dstsiz,
|
|
|
-+ const u_char **dnptrs, const u_char **lastdnptr)
|
|
|
-+{
|
|
|
-+ u_char tmp[NS_MAXCDNAME];
|
|
|
-+
|
|
|
-+ if (ns_name_pton(src, tmp, sizeof tmp) == -1)
|
|
|
-+ return (-1);
|
|
|
-+ return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr));
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * special(ch)
|
|
|
-+ * Thinking in noninternationalized USASCII (per the DNS spec),
|
|
|
-+ * is this characted special ("in need of quoting") ?
|
|
|
-+ * return:
|
|
|
-+ * boolean.
|
|
|
-+ */
|
|
|
-+static int
|
|
|
-+special(int ch) {
|
|
|
-+ switch (ch) {
|
|
|
-+ case 0x22: /* '"' */
|
|
|
-+ case 0x2E: /* '.' */
|
|
|
-+ case 0x3B: /* ';' */
|
|
|
-+ case 0x5C: /* '\\' */
|
|
|
-+ /* Special modifiers in zone files. */
|
|
|
-+ case 0x40: /* '@' */
|
|
|
-+ case 0x24: /* '$' */
|
|
|
-+ return (1);
|
|
|
-+ default:
|
|
|
-+ return (0);
|
|
|
-+ }
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * printable(ch)
|
|
|
-+ * Thinking in noninternationalized USASCII (per the DNS spec),
|
|
|
-+ * is this character visible and not a space when printed ?
|
|
|
-+ * return:
|
|
|
-+ * boolean.
|
|
|
-+ */
|
|
|
-+static int
|
|
|
-+printable(int ch) {
|
|
|
-+ return (ch > 0x20 && ch < 0x7f);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Thinking in noninternationalized USASCII (per the DNS spec),
|
|
|
-+ * convert this character to lower case if it's upper case.
|
|
|
-+ */
|
|
|
-+static int
|
|
|
-+mklower(int ch) {
|
|
|
-+ if (ch >= 0x41 && ch <= 0x5A)
|
|
|
-+ return (ch + 0x20);
|
|
|
-+ return (ch);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * dn_find(domain, msg, dnptrs, lastdnptr)
|
|
|
-+ * Search for the counted-label name in an array of compressed names.
|
|
|
-+ * return:
|
|
|
-+ * offset from msg if found, or -1.
|
|
|
-+ * notes:
|
|
|
-+ * dnptrs is the pointer to the first name on the list,
|
|
|
-+ * not the pointer to the start of the message.
|
|
|
-+ */
|
|
|
-+static int
|
|
|
-+dn_find(const u_char *domain, const u_char *msg,
|
|
|
-+ const u_char * const *dnptrs,
|
|
|
-+ const u_char * const *lastdnptr)
|
|
|
-+{
|
|
|
-+ const u_char *dn, *cp, *sp;
|
|
|
-+ const u_char * const *cpp;
|
|
|
-+ u_int n;
|
|
|
-+
|
|
|
-+ for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
|
|
|
-+ sp = *cpp;
|
|
|
-+ /*
|
|
|
-+ * terminate search on:
|
|
|
-+ * root label
|
|
|
-+ * compression pointer
|
|
|
-+ * unusable offset
|
|
|
-+ */
|
|
|
-+ while (*sp != 0 && (*sp & NS_CMPRSFLGS) == 0 &&
|
|
|
-+ (sp - msg) < 0x4000) {
|
|
|
-+ dn = domain;
|
|
|
-+ cp = sp;
|
|
|
-+ while ((n = *cp++) != 0) {
|
|
|
-+ /*
|
|
|
-+ * check for indirection
|
|
|
-+ */
|
|
|
-+ switch (n & NS_CMPRSFLGS) {
|
|
|
-+ case 0: /* normal case, n == len */
|
|
|
-+ if (n != *dn++)
|
|
|
-+ goto next;
|
|
|
-+ for ((void)NULL; n > 0; n--)
|
|
|
-+ if (mklower(*dn++) !=
|
|
|
-+ mklower(*cp++))
|
|
|
-+ goto next;
|
|
|
-+ /* Is next root for both ? */
|
|
|
-+ if (*dn == '\0' && *cp == '\0')
|
|
|
-+ return (sp - msg);
|
|
|
-+ if (*dn)
|
|
|
-+ continue;
|
|
|
-+ goto next;
|
|
|
-+
|
|
|
-+ case NS_CMPRSFLGS: /* indirection */
|
|
|
-+ cp = msg + (((n & 0x3f) << 8) | *cp);
|
|
|
-+ break;
|
|
|
-+
|
|
|
-+ default: /* illegal type */
|
|
|
-+ return (-1);
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+ next:
|
|
|
-+ sp += *sp + 1;
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+ return (-1);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Expand compressed domain name 'comp_dn' to full domain name.
|
|
|
-+ * 'msg' is a pointer to the begining of the message,
|
|
|
-+ * 'eomorig' points to the first location after the message,
|
|
|
-+ * 'exp_dn' is a pointer to a buffer of size 'length' for the result.
|
|
|
-+ * Return size of compressed name or -1 if there was an error.
|
|
|
-+ */
|
|
|
-+int
|
|
|
-+dn_expand(const u_char *msg, const u_char *eom, const u_char *src,
|
|
|
-+ char *dst, int dstsiz)
|
|
|
-+{
|
|
|
-+ int n = ns_name_uncompress(msg, eom, src, dst, (size_t)dstsiz);
|
|
|
-+
|
|
|
-+ if (n > 0 && dst[0] == '.')
|
|
|
-+ dst[0] = '\0';
|
|
|
-+ return (n);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Pack domain name 'exp_dn' in presentation form into 'comp_dn'.
|
|
|
-+ * Return the size of the compressed name or -1.
|
|
|
-+ * 'length' is the size of the array pointed to by 'comp_dn'.
|
|
|
-+ */
|
|
|
-+int
|
|
|
-+dn_comp(const char *src, u_char *dst, int dstsiz,
|
|
|
-+ u_char **dnptrs, u_char **lastdnptr)
|
|
|
-+{
|
|
|
-+ return (ns_name_compress(src, dst, (size_t)dstsiz,
|
|
|
-+ (const u_char **)dnptrs,
|
|
|
-+ (const u_char **)lastdnptr));
|
|
|
-+}
|
|
|
-+
|
|
|
-+
|
|
|
- #include "domain_resolver.h"
|
|
|
- #include "session.h"
|
|
|
- #include "util.h"
|