More bounds checking when fetching addresses and converting to strings.

[tcpdump] / print-eigrp.c

diff --git a/print-eigrp.c b/print-eigrp.c
index 37570979c3459b7531b4a8747f24ca37e4315ba8..029d245871370c776f70af808a0e70c4113da43a 100644 (file)
--- a/print-eigrp.c
+++ b/print-eigrp.c
@@ -360,13 +360,13 @@ eigrp_print(netdissect_options *ndo, const u_char *pptr, u_int len)
             GET_CPY_BYTES(prefix, tlv_ptr.eigrp_tlv_ip_int->destination, byte_length);
 
             ND_PRINT("\n\t    IPv4 prefix: %15s/%u, nexthop: ",
-                   ipaddr_string(ndo, prefix),
+                   ipaddr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
                    bit_length);
             if (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0)
                 ND_PRINT("self");
             else
                 ND_PRINT("%s",
-                         ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_int->nexthop));
+                         GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_int->nexthop));
 
             ND_PRINT("\n\t      delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
                    (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->delay)/100),
@@ -395,16 +395,16 @@ eigrp_print(netdissect_options *ndo, const u_char *pptr, u_int len)
             GET_CPY_BYTES(prefix, tlv_ptr.eigrp_tlv_ip_ext->destination, byte_length);
 
             ND_PRINT("\n\t    IPv4 prefix: %15s/%u, nexthop: ",
-                   ipaddr_string(ndo, prefix),
+                   ipaddr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
                    bit_length);
             if (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0)
                 ND_PRINT("self");
             else
                 ND_PRINT("%s",
-                         ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_ext->nexthop));
+                         GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_ext->nexthop));
 
             ND_PRINT("\n\t      origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
-                   ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_ext->origin_router),
+                   GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_ext->origin_router),
                    GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->origin_as),
                    tok2str(eigrp_ext_proto_id_values,"unknown",GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->proto_id)),
                    GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->flags),