X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/ec9f82da4bd3fa96462ebe84719193f32ba54ffb..refs/heads/master:/print-lspping.c diff --git a/print-lspping.c b/print-lspping.c index 655a933d..04a4b21a 100644 --- a/print-lspping.c +++ b/print-lspping.c @@ -10,28 +10,26 @@ * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE. * - * Original code by Hannes Gredler (hannes@juniper.net) + * Original code by Hannes Gredler (hannes@gredler.at) */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-lspping.c,v 1.4 2004-06-12 08:23:45 hannes Exp $"; -#endif +/* \summary: MPLS LSP PING printer */ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif +/* specification: RFC 4379 */ -#include +#include -#include -#include -#include +#include "netdissect-stdinc.h" -#include "interface.h" +#define ND_LONGJMP_FROM_TCHECK +#include "netdissect.h" #include "extract.h" #include "addrtoname.h" -#include "bgp.h" +#include "ntp.h" + +#include "l2vpn.h" +#include "oui.h" + /* * LSPPING common header @@ -62,23 +60,19 @@ static const char rcsid[] _U_ = */ struct lspping_common_header { - u_int8_t version[2]; - u_int8_t reserved[2]; - u_int8_t msg_type; - u_int8_t reply_mode; - u_int8_t return_code; - u_int8_t return_subcode; - u_int8_t sender_handle[4]; - u_int8_t seq_number[4]; - u_int8_t ts_sent_sec[4]; - u_int8_t ts_sent_usec[4]; - u_int8_t ts_rcvd_sec[4]; - u_int8_t ts_rcvd_usec[4]; + nd_uint16_t version; + nd_uint16_t global_flags; + nd_uint8_t msg_type; + nd_uint8_t reply_mode; + nd_uint8_t return_code; + nd_uint8_t return_subcode; + nd_uint32_t sender_handle; + nd_uint32_t seq_number; + struct l_fixedpt ts_sent; + struct l_fixedpt ts_rcvd; }; #define LSPPING_VERSION 1 -#define FALSE 0 -#define TRUE 1 static const struct tok lspping_msg_type_values[] = { { 1, "MPLS Echo Request"}, @@ -108,10 +102,12 @@ static const struct tok lspping_return_code_values[] = { { 10, "Mapping for this FEC is not the given label at stack depth"}, { 11, "No label entry at stack-depth"}, { 12, "Protocol not associated with interface at FEC stack depth"}, + { 13, "Premature termination of ping due to label stack shrinking to a single label"}, + { 0, NULL}, }; -/* +/* * LSPPING TLV header * 0 1 2 3 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 @@ -127,35 +123,54 @@ static const struct tok lspping_return_code_values[] = { */ struct lspping_tlv_header { - u_int8_t type[2]; - u_int8_t length[2]; + nd_uint16_t type; + nd_uint16_t length; }; #define LSPPING_TLV_TARGET_FEC_STACK 1 #define LSPPING_TLV_DOWNSTREAM_MAPPING 2 #define LSPPING_TLV_PAD 3 -#define LSPPING_TLV_ERROR_CODE 4 -#define LSPPING_TLV_VENDOR_PRIVATE 5 +/* not assigned 4 */ +#define LSPPING_TLV_VENDOR_ENTERPRISE 5 +#define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4 +/* not assigned 6 */ +#define LSPPING_TLV_INTERFACE_LABEL_STACK 7 +/* not assigned 8 */ +#define LSPPING_TLV_ERROR_CODE 9 +#define LSPPING_TLV_REPLY_TOS_BYTE 10 +#define LSPPING_TLV_BFD_DISCRIMINATOR 15 /* draft-ietf-bfd-mpls-02 */ +#define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4 +#define LSPPING_TLV_VENDOR_PRIVATE 0xfc00 static const struct tok lspping_tlv_values[] = { { LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" }, { LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" }, { LSPPING_TLV_PAD, "Pad" }, { LSPPING_TLV_ERROR_CODE, "Error Code" }, - { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Enterprise Code" }, + { LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" }, + { LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" }, + { LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" }, + { LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" }, + { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" }, { 0, NULL} }; -#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1 -#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2 -#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3 -#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4 -#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6 -#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7 -#define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8 -#define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID 9 -#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 10 -#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 11 +#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1 +#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2 +#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3 +#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4 +/* not assigned 5 */ +#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6 +#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7 +#define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8 +#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD 9 +#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW 10 +#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_129_PW 11 +#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 12 +#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 13 +#define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV4 14 +#define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV6 15 +#define LSPPING_TLV_TARGETFEC_SUBTLV_NIL_FEC 16 static const struct tok lspping_tlvtargetfec_subtlv_values[] = { { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"}, @@ -166,7 +181,8 @@ static const struct tok lspping_tlvtargetfec_subtlv_values[] = { { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"}, { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"}, { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"}, - { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID, "L2 circuit ID"}, + { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD, "FEC 128 pseudowire (old)"}, + { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW, "FEC 128 pseudowire"}, { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"}, { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"}, { 0, NULL} @@ -182,8 +198,8 @@ static const struct tok lspping_tlvtargetfec_subtlv_values[] = { * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t { - u_int8_t prefix [4]; - u_int8_t prefix_len; + nd_ipv4 prefix; + nd_uint8_t prefix_len; }; /* @@ -199,46 +215,8 @@ struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t { * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t { - u_int8_t prefix [16]; - u_int8_t prefix_len; -}; - -/* - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | Sender identifier | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | IPv4 prefix | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | Prefix Length | Must Be Zero | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - */ -struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t { - u_int8_t sender_id [4]; - u_int8_t prefix [4]; - u_int8_t prefix_len; -}; - -/* - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | Sender identifier | - * | (16 octets) | - * | | - * | | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | IPv6 prefix | - * | (16 octets) | - * | | - * | | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | Prefix Length | Must Be Zero | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - */ -struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t { - u_int8_t sender_id [16]; - u_int8_t prefix [16]; - u_int8_t prefix_len; + nd_ipv6 prefix; + nd_uint8_t prefix_len; }; /* @@ -257,13 +235,13 @@ struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t { * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t { - u_int8_t tunnel_endpoint [4]; - u_int8_t res[2]; - u_int8_t tunnel_id[2]; - u_int8_t extended_tunnel_id[4]; - u_int8_t tunnel_sender [4]; - u_int8_t res2[2]; - u_int8_t lsp_id [2]; + nd_ipv4 tunnel_endpoint; + nd_byte res[2]; + nd_uint16_t tunnel_id; + nd_ipv4 extended_tunnel_id; + nd_ipv4 tunnel_sender; + nd_byte res2[2]; + nd_uint16_t lsp_id; }; /* @@ -291,13 +269,13 @@ struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t { * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t { - u_int8_t tunnel_endpoint [16]; - u_int8_t res[2]; - u_int8_t tunnel_id[2]; - u_int8_t extended_tunnel_id[16]; - u_int8_t tunnel_sender [16]; - u_int8_t res2[2]; - u_int8_t lsp_id [2]; + nd_ipv6 tunnel_endpoint; + nd_byte res[2]; + nd_uint16_t tunnel_id; + nd_ipv6 extended_tunnel_id; + nd_ipv6 tunnel_sender; + nd_byte res2[2]; + nd_uint16_t lsp_id; }; /* @@ -313,9 +291,9 @@ struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t { * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t { - u_int8_t rd [8]; - u_int8_t prefix [4]; - u_int8_t prefix_len; + nd_byte rd[8]; + nd_ipv4 prefix; + nd_uint8_t prefix_len; }; /* @@ -334,21 +312,201 @@ struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t { * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t { - u_int8_t rd [8]; - u_int8_t prefix [16]; - u_int8_t prefix_len; + nd_byte rd[8]; + nd_ipv6 prefix; + nd_uint8_t prefix_len; }; -void -lspping_print(register const u_char *pptr, register u_int len) { +/* + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Route Distinguisher | + * | (8 octets) | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Sender's VE ID | Receiver's VE ID | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Encapsulation Type | Must Be Zero | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * 0 1 2 3 + */ +struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t { + nd_byte rd[8]; + nd_uint16_t sender_ve_id; + nd_uint16_t receiver_ve_id; + nd_uint16_t encapsulation; +}; + +/* + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Remote PE Address | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | PW ID | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | PW Type | Must Be Zero | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +struct lspping_tlv_targetfec_subtlv_fec_128_pw_old { + nd_ipv4 remote_pe_address; + nd_uint32_t pw_id; + nd_uint16_t pw_type; +}; + +/* + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Sender's PE Address | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Remote PE Address | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | PW ID | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | PW Type | Must Be Zero | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +struct lspping_tlv_targetfec_subtlv_fec_128_pw { + nd_ipv4 sender_pe_address; + nd_ipv4 remote_pe_address; + nd_uint32_t pw_id; + nd_uint16_t pw_type; +}; + +/* + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | IPv4 prefix | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Prefix Length | Must Be Zero | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t { + nd_ipv4 prefix; + nd_uint8_t prefix_len; +}; + +/* + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | IPv6 prefix | + * | (16 octets) | + * | | + * | | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Prefix Length | Must Be Zero | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t { + nd_ipv6 prefix; + nd_uint8_t prefix_len; +}; + +/* + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | MTU | Address Type | Resvd (SBZ) | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Downstream IP Address (4 or 16 octets) | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Downstream Interface Address (4 or 16 octets) | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Multipath Type| Depth Limit | Multipath Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * . . + * . (Multipath Information) . + * . . + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Downstream Label | Protocol | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * . . + * . . + * . . + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Downstream Label | Protocol | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +/* Enough to get the address type */ +struct lspping_tlv_downstream_map_t { + nd_uint16_t mtu; + nd_uint8_t address_type; + nd_uint8_t ds_flags; +}; + +struct lspping_tlv_downstream_map_ipv4_t { + nd_uint16_t mtu; + nd_uint8_t address_type; + nd_uint8_t ds_flags; + nd_ipv4 downstream_ip; + nd_ipv4 downstream_interface; +}; + +struct lspping_tlv_downstream_map_ipv4_unmb_t { + nd_uint16_t mtu; + nd_uint8_t address_type; + nd_uint8_t ds_flags; + nd_ipv4 downstream_ip; + nd_uint32_t downstream_interface; +}; + +struct lspping_tlv_downstream_map_ipv6_t { + nd_uint16_t mtu; + nd_uint8_t address_type; + nd_uint8_t ds_flags; + nd_ipv6 downstream_ip; + nd_ipv6 downstream_interface; +}; + +struct lspping_tlv_downstream_map_ipv6_unmb_t { + nd_uint16_t mtu; + nd_uint8_t address_type; + nd_uint8_t ds_flags; + nd_ipv6 downstream_ip; + nd_uint32_t downstream_interface; +}; + +struct lspping_tlv_downstream_map_info_t { + nd_uint8_t multipath_type; + nd_uint8_t depth_limit; + nd_uint16_t multipath_length; +}; +#define LSPPING_AFI_IPV4 1 +#define LSPPING_AFI_IPV4_UNMB 2 +#define LSPPING_AFI_IPV6 3 +#define LSPPING_AFI_IPV6_UNMB 4 + +static const struct tok lspping_tlv_downstream_addr_values[] = { + { LSPPING_AFI_IPV4, "IPv4"}, + { LSPPING_AFI_IPV4_UNMB, "Unnumbered IPv4"}, + { LSPPING_AFI_IPV6, "IPv6"}, + { LSPPING_AFI_IPV6_UNMB, "IPv6"}, + { 0, NULL} +}; + +void +lspping_print(netdissect_options *ndo, + const u_char *pptr, u_int len) +{ const struct lspping_common_header *lspping_com_header; const struct lspping_tlv_header *lspping_tlv_header; const struct lspping_tlv_header *lspping_subtlv_header; const u_char *tptr,*tlv_tptr,*subtlv_tptr; - int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen; + u_int return_code, return_subcode; + u_int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen; int tlv_hexdump,subtlv_hexdump; - int lspping_subtlv_len,lspping_subtlv_type; + u_int lspping_subtlv_len,lspping_subtlv_type; + uint32_t int_part, fraction; + u_int address_type; + + union { + const struct lspping_tlv_downstream_map_t *lspping_tlv_downstream_map; + const struct lspping_tlv_downstream_map_ipv4_t *lspping_tlv_downstream_map_ipv4; + const struct lspping_tlv_downstream_map_ipv4_unmb_t *lspping_tlv_downstream_map_ipv4_unmb; + const struct lspping_tlv_downstream_map_ipv6_t *lspping_tlv_downstream_map_ipv6; + const struct lspping_tlv_downstream_map_ipv6_unmb_t *lspping_tlv_downstream_map_ipv6_unmb; + const struct lspping_tlv_downstream_map_info_t *lspping_tlv_downstream_map_info; + } tlv_ptr; union { const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *lspping_tlv_targetfec_subtlv_ldp_ipv4; @@ -357,29 +515,35 @@ lspping_print(register const u_char *pptr, register u_int len) { const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *lspping_tlv_targetfec_subtlv_rsvp_ipv6; const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv4; const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv6; + const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *lspping_tlv_targetfec_subtlv_l2vpn_endpt; + const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *lspping_tlv_targetfec_subtlv_l2vpn_vcid_old; + const struct lspping_tlv_targetfec_subtlv_fec_128_pw *lspping_tlv_targetfec_subtlv_l2vpn_vcid; const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *lspping_tlv_targetfec_subtlv_bgp_ipv4; const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *lspping_tlv_targetfec_subtlv_bgp_ipv6; } subtlv_ptr; + ndo->ndo_protocol = "lspping"; tptr=pptr; lspping_com_header = (const struct lspping_common_header *)pptr; - TCHECK(*lspping_com_header); + if (len < sizeof(struct lspping_common_header)) + goto tooshort; + ND_TCHECK_SIZE(lspping_com_header); /* * Sanity checking of the header. */ - if (EXTRACT_16BITS(&lspping_com_header->version[0]) != LSPPING_VERSION) { - printf("LSP-PING version %u packet not supported", - EXTRACT_16BITS(&lspping_com_header->version[0])); + if (GET_BE_U_2(lspping_com_header->version) != LSPPING_VERSION) { + ND_PRINT("LSP-PING version %u packet not supported", + GET_BE_U_2(lspping_com_header->version)); return; } /* in non-verbose mode just lets print the basic Message Type*/ - if (vflag < 1) { - printf("LSP-PINGv%u, %s, seq %u, length: %u", - EXTRACT_16BITS(&lspping_com_header->version[0]), - tok2str(lspping_msg_type_values, "unknown (%u)",lspping_com_header->msg_type), - EXTRACT_32BITS(lspping_com_header->seq_number), + if (ndo->ndo_vflag < 1) { + ND_PRINT("LSP-PINGv%u, %s, seq %u, length: %u", + GET_BE_U_2(lspping_com_header->version), + tok2str(lspping_msg_type_values, "unknown (%u)",GET_U_1(lspping_com_header->msg_type)), + GET_BE_U_4(lspping_com_header->seq_number), len); return; } @@ -388,96 +552,115 @@ lspping_print(register const u_char *pptr, register u_int len) { tlen=len; - printf("\n\tLSP-PINGv%u, msg-type: %s (%u), reply-mode: %s (%u)", - EXTRACT_16BITS(&lspping_com_header->version[0]), - tok2str(lspping_msg_type_values, "unknown",lspping_com_header->msg_type), - lspping_com_header->msg_type, - tok2str(lspping_reply_mode_values, "unknown",lspping_com_header->reply_mode), - lspping_com_header->reply_mode); + ND_PRINT("\n\tLSP-PINGv%u, msg-type: %s (%u), length: %u\n\t reply-mode: %s (%u)", + GET_BE_U_2(lspping_com_header->version), + tok2str(lspping_msg_type_values, "unknown",GET_U_1(lspping_com_header->msg_type)), + GET_U_1(lspping_com_header->msg_type), + len, + tok2str(lspping_reply_mode_values, "unknown",GET_U_1(lspping_com_header->reply_mode)), + GET_U_1(lspping_com_header->reply_mode)); /* * the following return codes require that the subcode is attached * at the end of the translated token output */ - if (lspping_com_header->return_code == 3 || - lspping_com_header->return_code == 4 || - lspping_com_header->return_code == 8 || - lspping_com_header->return_code == 10 || - lspping_com_header->return_code == 11 || - lspping_com_header->return_code == 12 ) - printf("\n\t Return Code: %s %u (%u), Return Subcode: (%u)", - tok2str(lspping_return_code_values, "unknown",lspping_com_header->return_code), - lspping_com_header->return_subcode, - lspping_com_header->return_code, - lspping_com_header->return_subcode); + return_code = GET_U_1(lspping_com_header->return_code); + return_subcode = GET_U_1(lspping_com_header->return_subcode); + if (return_code == 3 || + return_code == 4 || + return_code == 8 || + return_code == 10 || + return_code == 11 || + return_code == 12 ) + ND_PRINT("\n\t Return Code: %s %u (%u)\n\t Return Subcode: (%u)", + tok2str(lspping_return_code_values, "unknown",return_code), + return_subcode, + return_code, + return_subcode); + else + ND_PRINT("\n\t Return Code: %s (%u)\n\t Return Subcode: (%u)", + tok2str(lspping_return_code_values, "unknown",return_code), + return_code, + return_subcode); + + ND_PRINT("\n\t Sender Handle: 0x%08x, Sequence: %u", + GET_BE_U_4(lspping_com_header->sender_handle), + GET_BE_U_4(lspping_com_header->seq_number)); + + ND_PRINT("\n\t TimeStamp Sent: "); + p_ntp_time(ndo, &lspping_com_header->ts_sent); + + int_part=GET_BE_U_4(lspping_com_header->ts_rcvd.int_part); + fraction=GET_BE_U_4(lspping_com_header->ts_rcvd.fraction); + ND_PRINT("\n\t TimeStamp Received: "); + if (! (int_part == 0 && fraction == 0)) + p_ntp_time(ndo, &lspping_com_header->ts_rcvd); else - printf("\n\t Return Code: %s (%u), Return Subcode: (%u)", - tok2str(lspping_return_code_values, "unknown",lspping_com_header->return_code), - lspping_com_header->return_code, - lspping_com_header->return_subcode); - - printf("\n\t Sender Handle: 0x%08x, Sequence: %u" \ - "\n\t Sender Timestamp %u.%us, Receiver Timestamp %u.%us", - EXTRACT_32BITS(lspping_com_header->sender_handle), - EXTRACT_32BITS(lspping_com_header->seq_number), - EXTRACT_32BITS(lspping_com_header->ts_sent_sec), /* FIXME: replace with ts_print() */ - EXTRACT_32BITS(lspping_com_header->ts_sent_usec), - EXTRACT_32BITS(lspping_com_header->ts_rcvd_sec), /* FIXME: replace with ts_print() */ - EXTRACT_32BITS(lspping_com_header->ts_rcvd_usec)); - - tptr+=sizeof(const struct lspping_common_header); - tlen-=sizeof(const struct lspping_common_header); - - while(tlen>0) { - /* did we capture enough for fully decoding the tlv header ? */ - if (!TTEST2(*tptr, sizeof(struct lspping_tlv_header))) - goto trunc; + ND_PRINT("no timestamp"); - lspping_tlv_header = (const struct lspping_tlv_header *)tptr; - lspping_tlv_type=EXTRACT_16BITS(lspping_tlv_header->type); - lspping_tlv_len=EXTRACT_16BITS(lspping_tlv_header->length); + tptr+=sizeof(struct lspping_common_header); + tlen-=sizeof(struct lspping_common_header); - if (lspping_tlv_len == 0) - return; + while (tlen != 0) { + /* Does the TLV go past the end of the packet? */ + if (tlen < sizeof(struct lspping_tlv_header)) + goto tooshort; - if(lspping_tlv_len % 4 || lspping_tlv_len < 4) { /* aligned to four octet boundary */ - printf("\n\t ERROR: TLV %u bogus size %u",lspping_tlv_type,lspping_tlv_len); - return; - } + lspping_tlv_header = (const struct lspping_tlv_header *)tptr; + lspping_tlv_type=GET_BE_U_2(lspping_tlv_header->type); + lspping_tlv_len=GET_BE_U_2(lspping_tlv_header->length); - printf("\n\t %s TLV (%u), length: %u", + ND_PRINT("\n\t %s TLV (%u), length: %u", tok2str(lspping_tlv_values, "Unknown", lspping_tlv_type), lspping_tlv_type, lspping_tlv_len); + /* some little sanity checking */ + if (lspping_tlv_len == 0) { + tptr+=sizeof(struct lspping_tlv_header); + tlen-=sizeof(struct lspping_tlv_header); + continue; /* no value to dissect */ + } + tlv_tptr=tptr+sizeof(struct lspping_tlv_header); tlv_tlen=lspping_tlv_len; /* header not included -> no adjustment */ + /* Does the TLV go past the end of the packet? */ + if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header)) + goto tooshort; /* did we capture enough for fully decoding the tlv ? */ - if (!TTEST2(*tptr, lspping_tlv_len)) - goto trunc; + ND_TCHECK_LEN(tlv_tptr, lspping_tlv_len); tlv_hexdump=FALSE; switch(lspping_tlv_type) { case LSPPING_TLV_TARGET_FEC_STACK: - while(tlv_tlen>(int)sizeof(struct lspping_tlv_header)) { - - /* did we capture enough for fully decoding the subtlv header ? */ - if (!TTEST2(*tptr, sizeof(struct lspping_tlv_header))) - goto trunc; + while (tlv_tlen != 0) { + /* Does the subTLV header go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_header)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } subtlv_hexdump=FALSE; lspping_subtlv_header = (const struct lspping_tlv_header *)tlv_tptr; - lspping_subtlv_type=EXTRACT_16BITS(lspping_subtlv_header->type); - lspping_subtlv_len=EXTRACT_16BITS(lspping_subtlv_header->length); + lspping_subtlv_type=GET_BE_U_2(lspping_subtlv_header->type); + lspping_subtlv_len=GET_BE_U_2(lspping_subtlv_header->length); subtlv_tptr=tlv_tptr+sizeof(struct lspping_tlv_header); - - if (lspping_subtlv_len == 0) - break; - printf("\n\t %s subTLV (%u), length: %u", + /* Does the subTLV go past the end of the TLV? */ + if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + + /* Did we capture enough for fully decoding the subTLV? */ + ND_TCHECK_LEN(subtlv_tptr, lspping_subtlv_len); + + ND_PRINT("\n\t %s subTLV (%u), length: %u", tok2str(lspping_tlvtargetfec_subtlv_values, "Unknown", lspping_subtlv_type), @@ -487,137 +670,405 @@ lspping_print(register const u_char *pptr, register u_int len) { switch(lspping_subtlv_type) { case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4: - subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 = \ - (const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr; - printf("\n\t %s/%u", - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix), - subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 5) { + ND_PRINT("\n\t invalid subTLV length, should be 5"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 = + (const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr; + ND_PRINT("\n\t %s/%u", + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix), + GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len)); + } break; -#ifdef INET6 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6: - subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 = \ - (const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr; - printf("\n\t %s/%u", - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix), - subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 17) { + ND_PRINT("\n\t invalid subTLV length, should be 17"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 = + (const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr; + ND_PRINT("\n\t %s/%u", + GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix), + GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len)); + } break; -#endif case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4: - subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 = \ - (const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr; - printf("\n\t %s/%u, sender-id %s", - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix), - subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len, - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->sender_id)); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 5) { + ND_PRINT("\n\t invalid subTLV length, should be 5"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 = + (const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr; + ND_PRINT("\n\t %s/%u", + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix), + GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len)); + } break; -#ifdef INET6 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6: - subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 = \ - (const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr; - printf("\n\t %s/%u, sender-id %s", - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix), - subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len, - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->sender_id)); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 17) { + ND_PRINT("\n\t invalid subTLV length, should be 17"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 = + (const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr; + ND_PRINT("\n\t %s/%u", + GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix), + GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len)); + } break; -#endif case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4: - subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 = \ - (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr; - printf("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" \ - "\n\t tunnel-id 0x%04x, extended tunnel-id %s", - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint), - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender), - EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id), - EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id), - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id)); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 20) { + ND_PRINT("\n\t invalid subTLV length, should be 20"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 = + (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr; + ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" + "\n\t tunnel-id 0x%04x, extended tunnel-id %s", + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint), + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id), + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id)); + } break; -#ifdef INET6 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6: - subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 = \ - (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr; - printf("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" \ - "\n\t tunnel-id 0x%04x, extended tunnel-id %s", - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint), - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender), - EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id), - EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id), - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id)); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 56) { + ND_PRINT("\n\t invalid subTLV length, should be 56"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 = + (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr; + ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" + "\n\t tunnel-id 0x%04x, extended tunnel-id %s", + GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint), + GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id), + GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id)); + } break; -#endif case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4: - subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 = \ - (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr; - printf("\n\t RD: %s :%s/%u", - bgp_vpn_rd_print(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd), - ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix), - subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 13) { + ND_PRINT("\n\t invalid subTLV length, should be 13"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 = + (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr; + ND_PRINT("\n\t RD: %s, %s/%u", + bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd), + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix), + GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len)); + } break; -#ifdef INET6 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6: - subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 = \ - (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr; - printf("\n\t RD: %s :%s/%u", - bgp_vpn_rd_print(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd), - ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix), - subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len); + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 25) { + ND_PRINT("\n\t invalid subTLV length, should be 25"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 = + (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr; + ND_PRINT("\n\t RD: %s, %s/%u", + bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd), + GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix), + GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len)); + } break; -#endif + case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT: + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 14) { + ND_PRINT("\n\t invalid subTLV length, should be 14"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt = + (const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *)subtlv_tptr; + ND_PRINT("\n\t RD: %s, Sender VE ID: %u, Receiver VE ID: %u" + "\n\t Encapsulation Type: %s (%u)", + bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->rd), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->sender_ve_id), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->receiver_ve_id), + tok2str(mpls_pw_types_values, + "unknown", + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)); + } + break; - /* - * FIXME those are the defined subTLVs that lack a decoder - * you are welcome to contribute code ;-) - */ + /* the old L2VPN VCID subTLV does not have support for the sender field */ + case LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD: + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 10) { + ND_PRINT("\n\t invalid subTLV length, should be 10"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old = + (const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *)subtlv_tptr; + ND_PRINT("\n\t Remote PE: %s" + "\n\t PW ID: 0x%08x, PW Type: %s (%u)", + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->remote_pe_address), + GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_id), + tok2str(mpls_pw_types_values, + "unknown", + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type)), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type)); + } + break; - case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT: - case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID: + case LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW: + /* Is the subTLV length correct? */ + if (lspping_subtlv_len != 14) { + ND_PRINT("\n\t invalid subTLV length, should be 14"); + subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ + } else { + subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid = + (const struct lspping_tlv_targetfec_subtlv_fec_128_pw *)subtlv_tptr; + ND_PRINT("\n\t Sender PE: %s, Remote PE: %s" + "\n\t PW ID: 0x%08x, PW Type: %s (%u)", + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->sender_pe_address), + GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->remote_pe_address), + GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_id), + tok2str(mpls_pw_types_values, + "unknown", + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type)), + GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type)); + } + break; default: subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ break; } /* do we want to see an additionally subtlv hexdump ? */ - if (vflag > 1 || subtlv_hexdump==TRUE) - print_unknown_data(tlv_tptr+sizeof(struct lspping_tlv_header), \ + if (ndo->ndo_vflag > 1 || subtlv_hexdump==TRUE) + print_unknown_data(ndo, tlv_tptr+sizeof(struct lspping_tlv_header), "\n\t ", lspping_subtlv_len); + /* All subTLVs are aligned to four octet boundary */ + if (lspping_subtlv_len % 4) { + lspping_subtlv_len += 4 - (lspping_subtlv_len % 4); + /* Does the subTLV, including padding, go past the end of the TLV? */ + if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) { + ND_PRINT("\n\t\t TLV is too short"); + return; + } + } tlv_tptr+=lspping_subtlv_len; tlv_tlen-=lspping_subtlv_len+sizeof(struct lspping_tlv_header); } break; + case LSPPING_TLV_DOWNSTREAM_MAPPING: + /* Does the header go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_t)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + /* Did we capture enough to get the address family? */ + ND_TCHECK_LEN(tlv_tptr, + sizeof(struct lspping_tlv_downstream_map_t)); + + tlv_ptr.lspping_tlv_downstream_map= + (const struct lspping_tlv_downstream_map_t *)tlv_tptr; + + /* that strange thing with the downstream map TLV is that until now + * we do not know if its IPv4 or IPv6 or is unnumbered; after + * we find the address-type, we recast the tlv_tptr and move on. */ + + address_type = GET_U_1(tlv_ptr.lspping_tlv_downstream_map->address_type); + ND_PRINT("\n\t MTU: %u, Address-Type: %s (%u)", + GET_BE_U_2(tlv_ptr.lspping_tlv_downstream_map->mtu), + tok2str(lspping_tlv_downstream_addr_values, + "unknown", + address_type), + address_type); + + switch(address_type) { + + case LSPPING_AFI_IPV4: + /* Does the data go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_t)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + /* Did we capture enough for this part of the TLV? */ + ND_TCHECK_LEN(tlv_tptr, + sizeof(struct lspping_tlv_downstream_map_ipv4_t)); + + tlv_ptr.lspping_tlv_downstream_map_ipv4= + (const struct lspping_tlv_downstream_map_ipv4_t *)tlv_tptr; + ND_PRINT("\n\t Downstream IP: %s" + "\n\t Downstream Interface IP: %s", + GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip), + GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface)); + tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t); + tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t); + break; + case LSPPING_AFI_IPV4_UNMB: + /* Does the data go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + /* Did we capture enough for this part of the TLV? */ + ND_TCHECK_LEN(tlv_tptr, + sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t)); + + tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb= + (const struct lspping_tlv_downstream_map_ipv4_unmb_t *)tlv_tptr; + ND_PRINT("\n\t Downstream IP: %s" + "\n\t Downstream Interface Index: 0x%08x", + GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_ip), + GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_interface)); + tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t); + tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t); + break; + case LSPPING_AFI_IPV6: + /* Does the data go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_t)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + /* Did we capture enough for this part of the TLV? */ + ND_TCHECK_LEN(tlv_tptr, + sizeof(struct lspping_tlv_downstream_map_ipv6_t)); + + tlv_ptr.lspping_tlv_downstream_map_ipv6= + (const struct lspping_tlv_downstream_map_ipv6_t *)tlv_tptr; + ND_PRINT("\n\t Downstream IP: %s" + "\n\t Downstream Interface IP: %s", + GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_ip), + GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_interface)); + tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_t); + tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_t); + break; + case LSPPING_AFI_IPV6_UNMB: + /* Does the data go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + /* Did we capture enough for this part of the TLV? */ + ND_TCHECK_LEN(tlv_tptr, + sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t)); + + tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb= + (const struct lspping_tlv_downstream_map_ipv6_unmb_t *)tlv_tptr; + ND_PRINT("\n\t Downstream IP: %s" + "\n\t Downstream Interface Index: 0x%08x", + GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_ip), + GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_interface)); + tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t); + tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t); + break; + + default: + /* should not happen ! - no error message - tok2str() has barked already */ + break; + } + + /* Does the data go past the end of the TLV? */ + if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_info_t)) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } + /* Did we capture enough for this part of the TLV? */ + ND_TCHECK_LEN(tlv_tptr, + sizeof(struct lspping_tlv_downstream_map_info_t)); + + tlv_ptr.lspping_tlv_downstream_map_info= + (const struct lspping_tlv_downstream_map_info_t *)tlv_tptr; + + /* FIXME add hash-key type, depth limit, multipath processing */ + + /* FIXME print downstream labels */ + + tlv_hexdump=TRUE; /* dump the TLV until code complete */ + + break; + + case LSPPING_TLV_BFD_DISCRIMINATOR: + if (tlv_tlen < LSPPING_TLV_BFD_DISCRIMINATOR_LEN) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } else { + ND_PRINT("\n\t BFD Discriminator 0x%08x", GET_BE_U_4(tlv_tptr)); + } + break; + + case LSPPING_TLV_VENDOR_ENTERPRISE: + { + uint32_t vendor_id; + + if (tlv_tlen < LSPPING_TLV_VENDOR_ENTERPRISE_LEN) { + ND_PRINT("\n\t TLV is too short"); + tlv_hexdump = TRUE; + goto tlv_tooshort; + } else { + vendor_id = GET_BE_U_4(tlv_tptr); + ND_PRINT("\n\t Vendor: %s (0x%04x)", + tok2str(smi_values, "Unknown", vendor_id), + vendor_id); + } + } + break; + /* * FIXME those are the defined TLVs that lack a decoder * you are welcome to contribute code ;-) */ - - case LSPPING_TLV_DOWNSTREAM_MAPPING: case LSPPING_TLV_PAD: case LSPPING_TLV_ERROR_CODE: case LSPPING_TLV_VENDOR_PRIVATE: - + default: - if (vflag <= 1) - print_unknown_data(tlv_tptr,"\n\t ",tlv_tlen); + if (ndo->ndo_vflag <= 1) + print_unknown_data(ndo, tlv_tptr, "\n\t ", tlv_tlen); break; } /* do we want to see an additionally tlv hexdump ? */ - if (vflag > 1 || tlv_hexdump==TRUE) - print_unknown_data(tptr+sizeof(sizeof(struct lspping_tlv_header)),"\n\t ", + tlv_tooshort: + if (ndo->ndo_vflag > 1 || tlv_hexdump==TRUE) + print_unknown_data(ndo, tptr+sizeof(struct lspping_tlv_header), "\n\t ", lspping_tlv_len); - tptr+=lspping_tlv_len; - tlen-=lspping_tlv_len; + + /* All TLVs are aligned to four octet boundary */ + if (lspping_tlv_len % 4) { + lspping_tlv_len += (4 - lspping_tlv_len % 4); + /* Does the TLV, including padding, go past the end of the packet? */ + if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header)) + goto tooshort; + } + + tptr+=lspping_tlv_len+sizeof(struct lspping_tlv_header); + tlen-=lspping_tlv_len+sizeof(struct lspping_tlv_header); } return; -trunc: - printf("\n\t\t packet exceeded snapshot"); +tooshort: + ND_PRINT("\n\t\t packet is too short"); }