--- /dev/null
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code
+ * distributions retain the above copyright notice and this paragraph
+ * in its entirety, and (2) distributions including binary code include
+ * the above copyright notice and this paragraph in its entirety in
+ * the documentation or other materials provided with the distribution.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
+ * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
+ * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-rsvp.c,v 1.1 2002-10-03 16:01:58 hannes Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "interface.h"
+#include "extract.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+
+/*
+ * RFC 2205 common header
+ *
+ * 0 1 2 3
+ * +-------------+-------------+-------------+-------------+
+ * | Vers | Flags| Msg Type | RSVP Checksum |
+ * +-------------+-------------+-------------+-------------+
+ * | Send_TTL | (Reserved) | RSVP Length |
+ * +-------------+-------------+-------------+-------------+
+ *
+ */
+
+struct rsvp_common_header {
+ u_char version_flags;
+ u_char msg_type;
+ u_char checksum[2];
+ u_char ttl;
+ u_char reserved;
+ u_char length[2];
+};
+
+/*
+ * RFC2205 object header
+ *
+ *
+ * 0 1 2 3
+ * +-------------+-------------+-------------+-------------+
+ * | Length (bytes) | Class-Num | C-Type |
+ * +-------------+-------------+-------------+-------------+
+ * | |
+ * // (Object contents) //
+ * | |
+ * +-------------+-------------+-------------+-------------+
+ */
+
+struct rsvp_object_header {
+ u_char length[2];
+ u_char class_num;
+ u_char ctype;
+};
+
+#define RSVP_VERSION 1
+#define RSVP_EXTRACT_VERSION(x) (((x)&0xf0)>>4)
+
+#define RSVP_MSGTYPE_PATH 1
+#define RSVP_MSGTYPE_RESV 2
+#define RSVP_MSGTYPE_PATHERR 3
+#define RSVP_MSGTYPE_RESVERR 4
+#define RSVP_MSGTYPE_PATHTEAR 5
+#define RSVP_MSGTYPE_RESVTEAR 6
+#define RSVP_MSGTYPE_RESVCONF 7
+#define RSVP_MSGTYPE_AGGREGATE 12
+#define RSVP_MSGTYPE_ACK 13
+#define RSVP_MSGTYPE_HELLO_OLD 14 /* ancient Hellos */
+#define RSVP_MSGTYPE_SREFRESH 15
+#define RSVP_MSGTYPE_HELLO 20
+
+static const struct tok rsvp_msg_type_values[] = {
+ { RSVP_MSGTYPE_PATH, "Path" },
+ { RSVP_MSGTYPE_RESV, "Resv" },
+ { RSVP_MSGTYPE_PATHERR, "PathErr" },
+ { RSVP_MSGTYPE_RESVERR, "ResvErr" },
+ { RSVP_MSGTYPE_PATHTEAR, "PathTear" },
+ { RSVP_MSGTYPE_RESVTEAR, "ResvTear" },
+ { RSVP_MSGTYPE_RESVCONF, "ResvConf" },
+ { RSVP_MSGTYPE_AGGREGATE, "Aggregate" },
+ { RSVP_MSGTYPE_ACK, "Acknowledgement" },
+ { RSVP_MSGTYPE_HELLO_OLD, "Hello (Old)" },
+ { RSVP_MSGTYPE_SREFRESH, "Refresh" },
+ { RSVP_MSGTYPE_HELLO, "Hello" },
+ { 0, NULL}
+};
+
+#define RSVP_OBJ_SESSION 1
+#define RSVP_OBJ_RSVP_HOP 3
+#define RSVP_OBJ_INTEGRITY 4
+#define RSVP_OBJ_TIME_VALUES 5
+#define RSVP_OBJ_ERROR_SPEC 6
+#define RSVP_OBJ_SCOPE 7
+#define RSVP_OBJ_STYLE 8
+#define RSVP_OBJ_FLOWSPEC 9
+#define RSVP_OBJ_FILTERSPEC 10
+#define RSVP_OBJ_SENDER_TEMPLATE 11
+#define RSVP_OBJ_SENDER_TSPEC 12
+#define RSVP_OBJ_ADSPEC 13
+#define RSVP_OBJ_POLICY_DATA 14
+#define RSVP_OBJ_CONFIRM 15
+#define RSVP_OBJ_LABEL 16
+#define RSVP_OBJ_LABEL_REQ 19
+#define RSVP_OBJ_ERO 20
+#define RSVP_OBJ_RRO 21
+#define RSVP_OBJ_HELLO 22
+#define RSVP_OBJ_MESSAGE_ID 23
+#define RSVP_OBJ_MESSAGE_ID_ACK 24
+#define RSVP_OBJ_MESSAGE_ID_LIST 25
+#define RSVP_OBJ_RECOVERY_LABEL 34
+#define RSVP_OBJ_UPSTREAM_LABEL 35
+#define RSVP_OBJ_DETOUR 63
+#define RSVP_OBJ_SUGGESTED_LABEL 129
+#define RSVP_OBJ_PROPERTIES 204
+#define RSVP_OBJ_FASTREROUTE 205
+#define RSVP_OBJ_SESSION_ATTTRIBUTE 207
+#define RSVP_OBJ_RESTART_CAPABILITY 131
+
+static const struct tok rsvp_obj_values[] = {
+ { RSVP_OBJ_SESSION, "Session" },
+ { RSVP_OBJ_RSVP_HOP, "RSVP Hop" },
+ { RSVP_OBJ_INTEGRITY, "Integrity" },
+ { RSVP_OBJ_TIME_VALUES, "Time Values" },
+ { RSVP_OBJ_ERROR_SPEC, "Error Spec" },
+ { RSVP_OBJ_SCOPE, "Scope" },
+ { RSVP_OBJ_STYLE, "Style" },
+ { RSVP_OBJ_FLOWSPEC, "Flowspec" },
+ { RSVP_OBJ_FILTERSPEC, "FilterSpec" },
+ { RSVP_OBJ_SENDER_TEMPLATE, "Sender Template" },
+ { RSVP_OBJ_SENDER_TSPEC, "Sender TSpec" },
+ { RSVP_OBJ_ADSPEC, "Adspec" },
+ { RSVP_OBJ_POLICY_DATA, "Policy Data" },
+ { RSVP_OBJ_CONFIRM, "Confirm" },
+ { RSVP_OBJ_LABEL, "Label" },
+ { RSVP_OBJ_LABEL_REQ, "Label Request" },
+ { RSVP_OBJ_ERO, "ERO" },
+ { RSVP_OBJ_RRO, "RRO" },
+ { RSVP_OBJ_HELLO, "Hello" },
+ { RSVP_OBJ_MESSAGE_ID, "Message ID" },
+ { RSVP_OBJ_MESSAGE_ID_ACK, "Message ID Ack" },
+ { RSVP_OBJ_MESSAGE_ID_LIST, "Message ID List" },
+ { RSVP_OBJ_RECOVERY_LABEL, "Recovery Label" },
+ { RSVP_OBJ_UPSTREAM_LABEL, "Upstream Label" },
+ { RSVP_OBJ_DETOUR, "Detour" },
+ { RSVP_OBJ_SUGGESTED_LABEL, "Suggested Label" },
+ { RSVP_OBJ_PROPERTIES, "Properties" },
+ { RSVP_OBJ_FASTREROUTE, "Fast Re-Route" },
+ { RSVP_OBJ_SESSION_ATTTRIBUTE, "Session Attribute" },
+ { RSVP_OBJ_RESTART_CAPABILITY, "Restart Capability" },
+ { 0, NULL}
+};
+
+#define RSVP_CTYPE_IPV4 1
+#define RSVP_CTYPE_IPV6 2
+#define RSVP_CTYPE_TUNNEL_IPV4 7
+
+static const struct tok rsvp_ctype_values[] = {
+ { RSVP_CTYPE_IPV4, "IPv4" },
+ { RSVP_CTYPE_IPV6, "IPv6" },
+ { RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
+ { 0, NULL}
+};
+
+#define RSVP_OBJ_XRO_MASK_SUBOBJ(x) ((x)&0x7f)
+#define RSVP_OBJ_XRO_MASK_LOOSE(x) ((x)&0x80)
+
+#define RSVP_OBJ_XRO_RES 0
+#define RSVP_OBJ_XRO_IPV4 1
+#define RSVP_OBJ_XRO_IPV6 2
+#define RSVP_OBJ_XRO_ASN 32
+#define RSVP_OBJ_XRO_MPLS 64
+
+static const struct tok rsvp_obj_xro_values[] = {
+ { RSVP_OBJ_XRO_RES, "Reserved" },
+ { RSVP_OBJ_XRO_IPV4, "IPv4 prefix" },
+ { RSVP_OBJ_XRO_IPV6, "IPv6 prefix" },
+ { RSVP_OBJ_XRO_ASN, "Autonomous system number" },
+ { RSVP_OBJ_XRO_MPLS, "MPLS label switched path termination" },
+ { 0, NULL}
+};
+
+void
+rsvp_print(register const u_char *pptr, register u_int len) {
+
+ const struct rsvp_common_header *rsvp_com_header;
+ const struct rsvp_object_header *rsvp_obj_header;
+ const u_char *tptr,*obj_tptr;
+ u_short tlen,rsvp_obj_len,rsvp_obj_ctype,obj_tlen;
+
+ tptr=pptr;
+ rsvp_com_header = (const struct rsvp_common_header *)pptr;
+ TCHECK(*rsvp_com_header);
+
+ /*
+ * Sanity checking of the header.
+ */
+ if (RSVP_EXTRACT_VERSION(rsvp_com_header->version_flags) != RSVP_VERSION) {
+ printf("RSVP version %u packet not supported",
+ RSVP_EXTRACT_VERSION(rsvp_com_header->version_flags));
+ return;
+ }
+
+ /* in non-verbose mode just lets print the basic Message Type*/
+ if (vflag < 1) {
+ printf("RSVP %s Message, length: %u",
+ tok2str(rsvp_msg_type_values, "unknown (%u)",rsvp_com_header->msg_type),
+ len);
+ return;
+ }
+
+ /* ok they seem to want to know everything - lets fully decode it */
+
+ printf("RSVP, length: %u",len);
+
+ tlen=EXTRACT_16BITS(rsvp_com_header->length);
+
+ printf("\n\tv: %u, msg-type: %s, length: %u, ttl: %u, checksum: 0x%04x",
+ RSVP_EXTRACT_VERSION(rsvp_com_header->version_flags),
+ tok2str(rsvp_msg_type_values, "unknown, type: %u",rsvp_com_header->msg_type),
+ tlen,
+ rsvp_com_header->ttl,
+ EXTRACT_16BITS(rsvp_com_header->checksum));
+
+ tptr+=sizeof(const struct rsvp_common_header);
+ tlen-=sizeof(const struct rsvp_common_header);
+
+ while(tlen>0) {
+ /* did we capture enough for fully decoding the object header ? */
+ if (!TTEST2(*tptr, sizeof(struct rsvp_object_header)))
+ goto trunc;
+
+ rsvp_obj_header = (const struct rsvp_object_header *)tptr;
+ rsvp_obj_len=EXTRACT_16BITS(rsvp_obj_header->length);
+ rsvp_obj_ctype=rsvp_obj_header->ctype;
+
+ if(rsvp_obj_len % 4 || rsvp_obj_len < 4)
+ return;
+
+ printf("\n\t %s Object (%u), Class-Type: %s (%u), length: %u",
+ tok2str(rsvp_obj_values, "Unknown",rsvp_obj_header->class_num),
+ rsvp_obj_header->class_num,
+ tok2str(rsvp_ctype_values, "Unknown",rsvp_obj_ctype),
+ rsvp_obj_ctype,
+ rsvp_obj_len);
+
+ obj_tptr=tptr+sizeof(struct rsvp_object_header);
+ obj_tlen=rsvp_obj_len-sizeof(struct rsvp_object_header);
+
+ /* did we capture enough for fully decoding the object ? */
+ if (!TTEST2(*tptr, rsvp_obj_len))
+ goto trunc;
+
+ switch(rsvp_obj_header->class_num) {
+ case RSVP_OBJ_LABEL:
+ switch(rsvp_obj_ctype) {
+ case RSVP_CTYPE_IPV4:
+ while(obj_tlen >= 4 ) {
+ printf("\n\t Label: %u", EXTRACT_32BITS(obj_tptr));
+ obj_tlen-=4;
+ obj_tptr+=4;
+ }
+ break;
+ }
+ break;
+ case RSVP_OBJ_LABEL_REQ:
+ switch(rsvp_obj_ctype) {
+ case RSVP_CTYPE_IPV4:
+ while(obj_tlen >= 4 ) {
+ printf("\n\t L3 Protocol ID: %s",
+ tok2str(ethertype_values,
+ "Unknown Protocol 0x%04x",
+ EXTRACT_16BITS(obj_tptr+2)));
+ obj_tlen-=4;
+ obj_tptr+=4;
+ }
+ break;
+ }
+ break;
+ case RSVP_OBJ_RRO:
+ case RSVP_OBJ_ERO:
+ switch(rsvp_obj_ctype) {
+ case RSVP_CTYPE_IPV4:
+ while(obj_tlen >= 4 ) {
+ printf("\n\t Subobject Type: %s",
+ tok2str(rsvp_obj_xro_values,
+ "Unknown %u",
+ RSVP_OBJ_XRO_MASK_SUBOBJ(*obj_tptr)));
+ switch(RSVP_OBJ_XRO_MASK_SUBOBJ(*obj_tptr)) {
+ case RSVP_OBJ_XRO_IPV4:
+ printf(", %s, %s/%u",
+ RSVP_OBJ_XRO_MASK_LOOSE(*obj_tptr) ? "Loose" : "Strict",
+ ipaddr_string(obj_tptr+2),
+ *(obj_tptr+6));
+ }
+ obj_tlen-=*(obj_tptr+1);
+ obj_tptr+=*(obj_tptr+1);
+ }
+ break;
+ }
+ break;
+ /*
+ * FIXME those are the defined objects that lack a decoder
+ * you are welcome to contribute code ;-)
+ */
+ case RSVP_OBJ_SESSION:
+ case RSVP_OBJ_RSVP_HOP:
+ case RSVP_OBJ_INTEGRITY:
+ case RSVP_OBJ_TIME_VALUES:
+ case RSVP_OBJ_ERROR_SPEC:
+ case RSVP_OBJ_SCOPE:
+ case RSVP_OBJ_STYLE:
+ case RSVP_OBJ_FILTERSPEC:
+ case RSVP_OBJ_SENDER_TEMPLATE:
+ case RSVP_OBJ_SENDER_TSPEC:
+ case RSVP_OBJ_ADSPEC:
+ case RSVP_OBJ_POLICY_DATA:
+ case RSVP_OBJ_CONFIRM:
+ case RSVP_OBJ_HELLO:
+ case RSVP_OBJ_MESSAGE_ID:
+ case RSVP_OBJ_MESSAGE_ID_ACK:
+ case RSVP_OBJ_MESSAGE_ID_LIST:
+ case RSVP_OBJ_RECOVERY_LABEL:
+ case RSVP_OBJ_UPSTREAM_LABEL:
+ case RSVP_OBJ_DETOUR:
+ case RSVP_OBJ_SUGGESTED_LABEL:
+ case RSVP_OBJ_PROPERTIES:
+ case RSVP_OBJ_FASTREROUTE:
+ case RSVP_OBJ_SESSION_ATTTRIBUTE:
+ case RSVP_OBJ_RESTART_CAPABILITY:
+ default:
+ if (vflag <= 1)
+ print_unknown_data(obj_tptr,"\n\t ",obj_tlen);
+ break;
+ }
+ /* do we want to see an additionally hexdump ? */
+ if (vflag > 1)
+ print_unknown_data(tptr+sizeof(sizeof(struct rsvp_object_header)),"\n\t ",
+ rsvp_obj_len-sizeof(struct rsvp_object_header));
+
+ tptr+=rsvp_obj_len;
+ tlen-=rsvp_obj_len;
+ }
+ return;
+trunc:
+ printf("\n\t\t packet exceeded snapshot");
+}
+
+
projects / tcpdump / commitdiff
