On Solaris, for 64-bit builds, use the 64-bit pcap-config.

[tcpdump] / print-dhcp6.c

diff --git a/print-dhcp6.c b/print-dhcp6.c
index 0b40af81f93174c2df4d9a2d39b1ec2870429cd0..6b0dc21335d31c432c3e97ccf77d5a72b695a155 100644 (file)
--- a/print-dhcp6.c
+++ b/print-dhcp6.c
@@ -49,9 +49,6 @@
 
 #include "netdissect-stdinc.h"
 
-#include <stdio.h>
-#include <string.h>
-
 #include "netdissect.h"
 #include "addrtoname.h"
 #include "extract.h"
@@ -411,11 +408,26 @@ dhcp6opt_print(netdissect_options *ndo,
                        ND_PRINT(" %u)", GET_BE_U_2(tp));
                        break;
                case DH6OPT_RELAY_MSG:
+                   {
+                       const u_char *snapend_save;
+
                        ND_PRINT(" (");
                        tp = (const u_char *)(dh6o + 1);
+                       /*
+                        * Update the snapend to the end of the option before
+                        * calling recursively dhcp6_print() for the nested
+                        * packet. Other options may be present after the
+                        * nested DHCPv6 packet. This prevents that, in
+                        * dhcp6_print(), for the nested DHCPv6 packet, the
+                        * remaining length < remaining caplen.
+                        */
+                       snapend_save = ndo->ndo_snapend;
+                       ndo->ndo_snapend = ND_MIN(tp + optlen, ndo->ndo_snapend);
                        dhcp6_print(ndo, tp, optlen);
+                       ndo->ndo_snapend = snapend_save;
                        ND_PRINT(")");
                        break;
+                   }
                case DH6OPT_AUTH:
                        if (optlen < 11) {
                                ND_PRINT(" ?)");
@@ -748,7 +760,7 @@ dhcp6opt_print(netdissect_options *ndo,
                                label_len = GET_U_1(tp);
                                tp++;
                                if (label_len < remain_len - 1) {
-                                       (void)nd_printn(ndo, tp, label_len, NULL);
+                                       nd_printjnp(ndo, tp, label_len);
                                        tp += label_len;
                                        remain_len -= (label_len + 1);
                                        if(GET_U_1(tp)) ND_PRINT(".");
@@ -767,8 +779,8 @@ dhcp6opt_print(netdissect_options *ndo,
                                break;
                        }
                        tp = (const u_char *)(dh6o + 1);
-                       ND_PRINT("=");
-                       (void)nd_printn(ndo, tp, (u_int)optlen, NULL);
+                       ND_PRINT(" ");
+                       nd_printjnp(ndo, tp, optlen);
                        ND_PRINT(")");
                        break;
 
@@ -826,8 +838,6 @@ dhcp6_print(netdissect_options *ndo,
                extp = (const u_char *)(dh6 + 1);
                dhcp6opt_print(ndo, extp, ep);
        } else {                /* relay messages */
-               ND_TCHECK_16(dh6relay->dh6relay_peeraddr);
-
                ND_PRINT("linkaddr=%s", GET_IP6ADDR_STRING(dh6relay->dh6relay_linkaddr));
 
                ND_PRINT(" peeraddr=%s", GET_IP6ADDR_STRING(dh6relay->dh6relay_peeraddr));