1 files changed, 329 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-ip6opts.c b/contrib/tcpdump/print-ip6opts.c
new file mode 100644
index 0000000..7a4bf55
--- /dev/null
+++ b/contrib/tcpdump/print-ip6opts.c
@@ -0,0 +1,329 @@
+/*
+ * Copyright (C) 1998 WIDE Project.
+ * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef lint
+static const char rcsid[] _U_ =
+     "@(#) $Header: /tcpdump/master/tcpdump/print-ip6opts.c,v 1.18 2005-04-20 22:18:50 guy Exp $";
+#endif
+
+#ifdef INET6
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+
+#include "ip6.h"
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+/* items outside of rfc2292bis */
+#ifndef IP6OPT_MINLEN
+#define IP6OPT_MINLEN	2
+#endif
+#ifndef IP6OPT_RTALERT_LEN
+#define IP6OPT_RTALERT_LEN	4
+#endif
+#ifndef IP6OPT_JUMBO_LEN
+#define IP6OPT_JUMBO_LEN	6
+#endif
+#define IP6OPT_HOMEADDR_MINLEN 18
+#define IP6OPT_BU_MINLEN       10
+#define IP6OPT_BA_MINLEN       13
+#define IP6OPT_BR_MINLEN        2
+#define IP6SOPT_UI            0x2
+#define IP6SOPT_UI_MINLEN       4
+#define IP6SOPT_ALTCOA        0x3
+#define IP6SOPT_ALTCOA_MINLEN  18
+#define IP6SOPT_AUTH          0x4
+#define IP6SOPT_AUTH_MINLEN     6
+
+static void ip6_sopt_print(const u_char *, int);
+
+static void
+ip6_sopt_print(const u_char *bp, int len)
+{
+    int i;
+    int optlen;
+
+    for (i = 0; i < len; i += optlen) {
+	if (bp[i] == IP6OPT_PAD1)
+	    optlen = 1;
+	else {
+	    if (i + 1 < len)
+		optlen = bp[i + 1] + 2;
+	    else
+		goto trunc;
+	}
+	if (i + optlen > len)
+	    goto trunc;
+
+	switch (bp[i]) {
+	case IP6OPT_PAD1:
+            printf(", pad1");
+	    break;
+	case IP6OPT_PADN:
+	    if (len - i < IP6OPT_MINLEN) {
+		printf(", padn: trunc");
+		goto trunc;
+	    }
+            printf(", padn");
+	    break;
+        case IP6SOPT_UI:
+             if (len - i < IP6SOPT_UI_MINLEN) {
+		printf(", ui: trunc");
+		goto trunc;
+	    }
+            printf(", ui: 0x%04x ", EXTRACT_16BITS(&bp[i + 2]));
+	    break;
+        case IP6SOPT_ALTCOA:
+             if (len - i < IP6SOPT_ALTCOA_MINLEN) {
+		printf(", altcoa: trunc");
+		goto trunc;
+	    }
+            printf(", alt-CoA: %s", ip6addr_string(&bp[i+2]));
+	    break;
+        case IP6SOPT_AUTH:
+             if (len - i < IP6SOPT_AUTH_MINLEN) {
+		printf(", auth: trunc");
+		goto trunc;
+	    }
+            printf(", auth spi: 0x%08x", EXTRACT_32BITS(&bp[i + 2]));
+	    break;
+	default:
+	    if (len - i < IP6OPT_MINLEN) {
+		printf(", sopt_type %d: trunc)", bp[i]);
+		goto trunc;
+	    }
+	    printf(", sopt_type 0x%02x: len=%d", bp[i], bp[i + 1]);
+	    break;
+	}
+    }
+    return;
+
+trunc:
+    printf("[trunc] ");
+}
+
+void
+ip6_opt_print(const u_char *bp, int len)
+{
+    int i;
+    int optlen = 0;
+
+    for (i = 0; i < len; i += optlen) {
+	if (bp[i] == IP6OPT_PAD1)
+	    optlen = 1;
+	else {
+	    if (i + 1 < len)
+		optlen = bp[i + 1] + 2;
+	    else
+		goto trunc;
+	}
+	if (i + optlen > len)
+	    goto trunc;
+
+	switch (bp[i]) {
+	case IP6OPT_PAD1:
+            printf("(pad1)");
+	    break;
+	case IP6OPT_PADN:
+	    if (len - i < IP6OPT_MINLEN) {
+		printf("(padn: trunc)");
+		goto trunc;
+	    }
+            printf("(padn)");
+	    break;
+	case IP6OPT_ROUTER_ALERT:
+	    if (len - i < IP6OPT_RTALERT_LEN) {
+		printf("(rtalert: trunc)");
+		goto trunc;
+	    }
+	    if (bp[i + 1] != IP6OPT_RTALERT_LEN - 2) {
+		printf("(rtalert: invalid len %d)", bp[i + 1]);
+		goto trunc;
+	    }
+	    printf("(rtalert: 0x%04x) ", EXTRACT_16BITS(&bp[i + 2]));
+	    break;
+	case IP6OPT_JUMBO:
+	    if (len - i < IP6OPT_JUMBO_LEN) {
+		printf("(jumbo: trunc)");
+		goto trunc;
+	    }
+	    if (bp[i + 1] != IP6OPT_JUMBO_LEN - 2) {
+		printf("(jumbo: invalid len %d)", bp[i + 1]);
+		goto trunc;
+	    }
+	    printf("(jumbo: %u) ", EXTRACT_32BITS(&bp[i + 2]));
+	    break;
+        case IP6OPT_HOME_ADDRESS:
+	    if (len - i < IP6OPT_HOMEADDR_MINLEN) {
+		printf("(homeaddr: trunc)");
+		goto trunc;
+	    }
+	    if (bp[i + 1] < IP6OPT_HOMEADDR_MINLEN - 2) {
+		printf("(homeaddr: invalid len %d)", bp[i + 1]);
+		goto trunc;
+	    }
+	    printf("(homeaddr: %s", ip6addr_string(&bp[i + 2]));
+            if (bp[i + 1] > IP6OPT_HOMEADDR_MINLEN - 2) {
+		ip6_sopt_print(&bp[i + IP6OPT_HOMEADDR_MINLEN],
+		    (optlen - IP6OPT_HOMEADDR_MINLEN));
+	    }
+            printf(")");
+	    break;
+        case IP6OPT_BINDING_UPDATE:
+	    if (len - i < IP6OPT_BU_MINLEN) {
+		printf("(bu: trunc)");
+		goto trunc;
+	    }
+	    if (bp[i + 1] < IP6OPT_BU_MINLEN - 2) {
+		printf("(bu: invalid len %d)", bp[i + 1]);
+		goto trunc;
+	    }
+	    printf("(bu: ");
+	    if (bp[i + 2] & 0x80)
+		    printf("A");
+	    if (bp[i + 2] & 0x40)
+		    printf("H");
+	    if (bp[i + 2] & 0x20)
+		    printf("S");
+	    if (bp[i + 2] & 0x10)
+		    printf("D");
+	    if ((bp[i + 2] & 0x0f) || bp[i + 3] || bp[i + 4])
+		    printf("res");
+	    printf(", sequence: %u", bp[i + 5]);
+	    printf(", lifetime: %u", EXTRACT_32BITS(&bp[i + 6]));
+
+	    if (bp[i + 1] > IP6OPT_BU_MINLEN - 2) {
+		ip6_sopt_print(&bp[i + IP6OPT_BU_MINLEN],
+		    (optlen - IP6OPT_BU_MINLEN));
+	    }
+	    printf(")");
+	    break;
+	case IP6OPT_BINDING_ACK:
+	    if (len - i < IP6OPT_BA_MINLEN) {
+		printf("(ba: trunc)");
+		goto trunc;
+	    }
+	    if (bp[i + 1] < IP6OPT_BA_MINLEN - 2) {
+		printf("(ba: invalid len %d)", bp[i + 1]);
+		goto trunc;
+	    }
+	    printf("(ba: ");
+	    printf("status: %u", bp[i + 2]);
+	    if (bp[i + 3])
+		    printf("res");
+	    printf(", sequence: %u", bp[i + 4]);
+	    printf(", lifetime: %u", EXTRACT_32BITS(&bp[i + 5]));
+	    printf(", refresh: %u", EXTRACT_32BITS(&bp[i + 9]));
+
+	    if (bp[i + 1] > IP6OPT_BA_MINLEN - 2) {
+		ip6_sopt_print(&bp[i + IP6OPT_BA_MINLEN],
+		    (optlen - IP6OPT_BA_MINLEN));
+	    }
+            printf(")");
+	    break;
+        case IP6OPT_BINDING_REQ:
+	    if (len - i < IP6OPT_BR_MINLEN) {
+		printf("(br: trunc)");
+		goto trunc;
+	    }
+            printf("(br");
+            if (bp[i + 1] > IP6OPT_BR_MINLEN - 2) {
+		ip6_sopt_print(&bp[i + IP6OPT_BR_MINLEN],
+		    (optlen - IP6OPT_BR_MINLEN));
+	    }
+            printf(")");
+	    break;
+	default:
+	    if (len - i < IP6OPT_MINLEN) {
+		printf("(type %d: trunc)", bp[i]);
+		goto trunc;
+	    }
+	    printf("(opt_type 0x%02x: len=%d) ", bp[i], bp[i + 1]);
+	    break;
+	}
+    }
+
+#if 0
+end:
+#endif
+    return;
+
+trunc:
+    printf("[trunc] ");
+}
+
+int
+hbhopt_print(register const u_char *bp)
+{
+    const struct ip6_hbh *dp = (struct ip6_hbh *)bp;
+    int hbhlen = 0;
+
+    TCHECK(dp->ip6h_len);
+    hbhlen = (int)((dp->ip6h_len + 1) << 3);
+    TCHECK2(*dp, hbhlen);
+    printf("HBH ");
+    if (vflag)
+	ip6_opt_print((const u_char *)dp + sizeof(*dp), hbhlen - sizeof(*dp));
+
+    return(hbhlen);
+
+  trunc:
+    fputs("[|HBH]", stdout);
+    return(-1);
+}
+
+int
+dstopt_print(register const u_char *bp)
+{
+    const struct ip6_dest *dp = (struct ip6_dest *)bp;
+    int dstoptlen = 0;
+
+    TCHECK(dp->ip6d_len);
+    dstoptlen = (int)((dp->ip6d_len + 1) << 3);
+    TCHECK2(*dp, dstoptlen);
+    printf("DSTOPT ");
+    if (vflag) {
+	ip6_opt_print((const u_char *)dp + sizeof(*dp),
+	    dstoptlen - sizeof(*dp));
+    }
+
+    return(dstoptlen);
+
+  trunc:
+    fputs("[|DSTOPT]", stdout);
+    return(-1);
+}
+#endif /* INET6 */