From 1166f90fe87cef69f7923a1b8c386eecdc6cb92b Mon Sep 17 00:00:00 2001 From: sam Date: Mon, 11 Jul 2005 03:54:22 +0000 Subject: Virgin import of tcpdump v3.9.1 (release) from tcpdump.org Approved by: re (scottl) --- contrib/tcpdump/print-ldp.c | 131 ++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 119 insertions(+), 12 deletions(-) (limited to 'contrib/tcpdump/print-ldp.c') diff --git a/contrib/tcpdump/print-ldp.c b/contrib/tcpdump/print-ldp.c index 61d2a54..e296508 100644 --- a/contrib/tcpdump/print-ldp.c +++ b/contrib/tcpdump/print-ldp.c @@ -16,7 +16,7 @@ #ifndef lint static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-ldp.c,v 1.8 2004/06/15 09:42:42 hannes Exp $"; + "@(#) $Header: /tcpdump/master/tcpdump/print-ldp.c,v 1.8.2.5 2005/06/16 01:10:35 guy Exp $"; #endif #ifdef HAVE_CONFIG_H @@ -187,6 +187,33 @@ static const struct tok ldp_fec_values[] = { { 0, NULL} }; +#define LDP_FEC_MARTINI_IFPARM_MTU 0x01 +#define LDP_FEC_MARTINI_IFPARM_DESC 0x03 +#define LDP_FEC_MARTINI_IFPARM_VCCV 0x0c + +static const struct tok ldp_fec_martini_ifparm_values[] = { + { LDP_FEC_MARTINI_IFPARM_MTU, "MTU" }, + { LDP_FEC_MARTINI_IFPARM_DESC, "Description" }, + { LDP_FEC_MARTINI_IFPARM_VCCV, "VCCV" }, + { 0, NULL} +}; + +/* draft-ietf-pwe3-vccv-04.txt */ +static const struct tok ldp_fec_martini_ifparm_vccv_cc_values[] = { + { 0x01, "PWE3 control word" }, + { 0x02, "MPLS Router Alert Label" }, + { 0x04, "MPLS inner label TTL = 1" }, + { 0, NULL} +}; + +/* draft-ietf-pwe3-vccv-04.txt */ +static const struct tok ldp_fec_martini_ifparm_vccv_cv_values[] = { + { 0x01, "ICMP Ping" }, + { 0x02, "LSP Ping" }, + { 0x04, "BFD" }, + { 0, NULL} +}; + /* RFC1700 address family numbers, same definition in print-bgp.c */ #define AFNUM_INET 1 #define AFNUM_INET6 2 @@ -194,6 +221,7 @@ static const struct tok ldp_fec_values[] = { #define FALSE 0 #define TRUE 1 +int ldp_msg_print(register const u_char *); int ldp_tlv_print(register const u_char *); /* @@ -224,7 +252,7 @@ ldp_tlv_print(register const u_char *tptr) { const struct ldp_tlv_header *ldp_tlv_header; u_short tlv_type,tlv_len,tlv_tlen,af,ft_flags; u_char fec_type; - u_int ui; + u_int ui,vc_info_len, vc_info_tlv_type, vc_info_tlv_len,idx; char buf[100]; int i; @@ -324,10 +352,65 @@ ldp_tlv_print(register const u_char *tptr) { case LDP_FEC_HOSTADDRESS: break; case LDP_FEC_MARTINI_VC: - printf(": %s, %scontrol word, VC %u", + if (!TTEST2(*tptr, 11)) + goto trunc; + vc_info_len = *(tptr+2); + + printf(": %s, %scontrol word, group-ID %u, VC-ID %u, VC-info-length: %u", tok2str(l2vpn_encaps_values, "Unknown", EXTRACT_16BITS(tptr)&0x7fff), EXTRACT_16BITS(tptr)&0x8000 ? "" : "no ", - EXTRACT_32BITS(tptr+7)); + EXTRACT_32BITS(tptr+3), + EXTRACT_32BITS(tptr+7), + vc_info_len); + + if (vc_info_len == 0) /* infinite loop protection */ + break; + + tptr+=11; + if (!TTEST2(*tptr, vc_info_len)) + goto trunc; + + while (vc_info_len > 2) { + vc_info_tlv_type = *tptr; + vc_info_tlv_len = *(tptr+1); + if (vc_info_tlv_len < 2) + break; + if (vc_info_len < vc_info_tlv_len) + break; + + printf("\n\t\tInterface Parameter: %s (0x%02x), len %u", + tok2str(ldp_fec_martini_ifparm_values,"Unknown",vc_info_tlv_type), + vc_info_tlv_type, + vc_info_tlv_len); + + switch(vc_info_tlv_type) { + case LDP_FEC_MARTINI_IFPARM_MTU: + printf(": %u",EXTRACT_16BITS(tptr+2)); + break; + + case LDP_FEC_MARTINI_IFPARM_DESC: + printf(": "); + for (idx = 2; idx < vc_info_tlv_len; idx++) + safeputchar(*(tptr+idx)); + break; + + case LDP_FEC_MARTINI_IFPARM_VCCV: + printf("\n\t\t Control Channels (0x%02x) = [%s]", + *(tptr+2), + bittok2str(ldp_fec_martini_ifparm_vccv_cc_values,"none",*(tptr+2))); + printf("\n\t\t CV Types (0x%02x) = [%s]", + *(tptr+3), + bittok2str(ldp_fec_martini_ifparm_vccv_cv_values,"none",*(tptr+3))); + break; + + default: + print_unknown_data(tptr+2,"\n\t\t ",vc_info_tlv_len-2); + break; + } + + vc_info_len -= vc_info_tlv_len; + tptr += vc_info_tlv_len; + } break; } @@ -391,16 +474,34 @@ ldp_tlv_print(register const u_char *tptr) { break; } return(tlv_len+4); /* Type & Length fields not included */ + +trunc: + printf("\n\t\t packet exceeded snapshot"); + return 0; } void ldp_print(register const u_char *pptr, register u_int len) { + int processed; + while (len > (sizeof(struct ldp_common_header) + sizeof(struct ldp_msg_header))) { + processed = ldp_msg_print(pptr); + if (processed == 0) + return; + len -= processed; + pptr += processed; + } +} + + +int +ldp_msg_print(register const u_char *pptr) { + const struct ldp_common_header *ldp_com_header; const struct ldp_msg_header *ldp_msg_header; const u_char *tptr,*msg_tptr; u_short tlen; - u_short msg_len,msg_type,msg_tlen; + u_short pdu_len,msg_len,msg_type,msg_tlen; int hexdump,processed; tptr=pptr; @@ -411,24 +512,26 @@ ldp_print(register const u_char *pptr, register u_int len) { * Sanity checking of the header. */ if (EXTRACT_16BITS(&ldp_com_header->version) != LDP_VERSION) { - printf("LDP version %u packet not supported", + printf("%sLDP version %u packet not supported", + (vflag < 1) ? "" : "\n\t", EXTRACT_16BITS(&ldp_com_header->version)); - return; + return 0; } /* print the LSR-ID, label-space & length */ - printf("%sLDP, Label-Space-ID: %s:%u, length: %u", + pdu_len = EXTRACT_16BITS(&ldp_com_header->pdu_length); + printf("%sLDP, Label-Space-ID: %s:%u, pdu-length: %u", (vflag < 1) ? "" : "\n\t", ipaddr_string(&ldp_com_header->lsr_id), EXTRACT_16BITS(&ldp_com_header->label_space), - len); + pdu_len); /* bail out if non-verbose */ if (vflag < 1) - return; + return 0; /* ok they seem to want to know everything - lets fully decode it */ - tlen=EXTRACT_16BITS(ldp_com_header->pdu_length); + tlen=pdu_len; tptr += sizeof(const struct ldp_common_header); tlen -= sizeof(const struct ldp_common_header)-4; /* Type & Length fields not included */ @@ -452,6 +555,9 @@ ldp_print(register const u_char *pptr, register u_int len) { EXTRACT_32BITS(&ldp_msg_header->id), LDP_MASK_U_BIT(EXTRACT_16BITS(&ldp_msg_header->type)) ? "continue processing" : "ignore"); + if (msg_len == 0) /* infinite loop protection */ + return 0; + msg_tptr=tptr+sizeof(struct ldp_msg_header); msg_tlen=msg_len-sizeof(struct ldp_msg_header)+4; /* Type & Length fields not included */ @@ -501,8 +607,9 @@ ldp_print(register const u_char *pptr, register u_int len) { tptr += msg_len+4; tlen -= msg_len+4; } - return; + return pdu_len+4; trunc: printf("\n\t\t packet exceeded snapshot"); + return 0; } -- cgit v1.1