+ EXTRACT_U_1((obj_tptr + 2))),
+ EXTRACT_U_1(obj_tptr + 2)));
+ obj_tlen-=4+EXTRACT_U_1((obj_tptr + 3));
+ obj_tptr+=4+EXTRACT_U_1((obj_tptr + 3));
+ break;
+ default:
+ hexdump=TRUE;
+ }
+ break;
+
+ case RSVP_OBJ_GENERALIZED_UNI:
+ switch(rsvp_obj_ctype) {
+ int subobj_type,af,subobj_len,total_subobj_len;
+
+ case RSVP_CTYPE_1:
+
+ if (obj_tlen < 4)
+ return-1;
+
+ /* read variable length subobjects */
+ total_subobj_len = obj_tlen;
+ while(total_subobj_len > 0) {
+ /* If RFC 3476 Section 3.1 defined that a sub-object of the
+ * GENERALIZED_UNI RSVP object must have the Length field as
+ * a multiple of 4, instead of the check below it would be
+ * better to test total_subobj_len only once before the loop.
+ * So long as it does not define it and this while loop does
+ * not implement such a requirement, let's accept that within
+ * each iteration subobj_len may happen to be a multiple of 1
+ * and test it and total_subobj_len respectively.
+ */
+ if (total_subobj_len < 4)
+ goto invalid;
+ subobj_len = EXTRACT_BE_U_2(obj_tptr);
+ subobj_type = (EXTRACT_BE_U_2(obj_tptr + 2))>>8;
+ af = (EXTRACT_BE_U_2(obj_tptr + 2))&0x00FF;
+
+ ND_PRINT((ndo, "%s Subobject Type: %s (%u), AF: %s (%u), length: %u",
+ indent,
+ tok2str(rsvp_obj_generalized_uni_values, "Unknown", subobj_type),
+ subobj_type,
+ tok2str(af_values, "Unknown", af), af,
+ subobj_len));
+
+ /* In addition to what is explained above, the same spec does not
+ * explicitly say that the same Length field includes the 4-octet
+ * sub-object header, but as long as this while loop implements it
+ * as it does include, let's keep the check below consistent with
+ * the rest of the code.
+ */
+ if(subobj_len < 4 || subobj_len > total_subobj_len)
+ goto invalid;
+
+ switch(subobj_type) {
+ case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS:
+ case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS:
+
+ switch(af) {
+ case AFNUM_INET:
+ if (subobj_len < 8)
+ return -1;
+ ND_PRINT((ndo, "%s UNI IPv4 TNA address: %s",
+ indent, ipaddr_string(ndo, obj_tptr + 4)));
+ break;
+ case AFNUM_INET6:
+ if (subobj_len < 20)
+ return -1;
+ ND_PRINT((ndo, "%s UNI IPv6 TNA address: %s",
+ indent, ip6addr_string(ndo, obj_tptr + 4)));
+ break;
+ case AFNUM_NSAP:
+ if (subobj_len) {
+ /* unless we have a TLV parser lets just hexdump */
+ hexdump=TRUE;
+ }
+ break;
+ }
+ break;
+
+ case RSVP_GEN_UNI_SUBOBJ_DIVERSITY:
+ if (subobj_len) {
+ /* unless we have a TLV parser lets just hexdump */
+ hexdump=TRUE;
+ }
+ break;
+
+ case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL:
+ if (subobj_len < 16) {
+ return -1;
+ }
+
+ ND_PRINT((ndo, "%s U-bit: %x, Label type: %u, Logical port id: %u, Label: %u",
+ indent,
+ ((EXTRACT_BE_U_4(obj_tptr + 4))>>31),
+ ((EXTRACT_BE_U_4(obj_tptr + 4))&0xFF),
+ EXTRACT_BE_U_4(obj_tptr + 8),
+ EXTRACT_BE_U_4(obj_tptr + 12)));
+ break;
projects / tcpdump / blobdiff