/* NetBSD: print-juniper.c,v 1.2 2007/07/24 11:53:45 drochner Exp */ /* * 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. * * Original code by Hannes Gredler (hannes@gredler.at) */ /* \summary: DLT_JUNIPER_* printers */ #ifndef lint #else __RCSID("NetBSD: print-juniper.c,v 1.3 2007/07/25 06:31:32 dogcow Exp "); #endif #include #include "netdissect-stdinc.h" #include #define ND_LONGJMP_FROM_TCHECK #include "netdissect.h" #include "addrtoname.h" #include "extract.h" #include "ppp.h" #include "llc.h" #include "nlpid.h" #include "ethertype.h" #include "atm.h" /* * If none of the Juniper DLT_s are defined, there's nothing to do. */ #if defined(DLT_JUNIPER_GGSN) || defined(DLT_JUNIPER_ES) || \ defined(DLT_JUNIPER_MONITOR) || defined(DLT_JUNIPER_SERVICES) || \ defined(DLT_JUNIPER_PPPOE) || defined(DLT_JUNIPER_ETHER) || \ defined(DLT_JUNIPER_PPP) || defined(DLT_JUNIPER_FRELAY) || \ defined(DLT_JUNIPER_CHDLC) || defined(DLT_JUNIPER_PPPOE_ATM) || \ defined(DLT_JUNIPER_MLPPP) || defined(DLT_JUNIPER_MFR) || \ defined(DLT_JUNIPER_MLFR) || defined(DLT_JUNIPER_ATM1) || \ defined(DLT_JUNIPER_ATM2) #define JUNIPER_BPF_OUT 0 /* Outgoing packet */ #define JUNIPER_BPF_IN 1 /* Incoming packet */ #define JUNIPER_BPF_PKT_IN 0x1 /* Incoming packet */ #define JUNIPER_BPF_NO_L2 0x2 /* L2 header stripped */ #define JUNIPER_BPF_IIF 0x4 /* IIF is valid */ #define JUNIPER_BPF_FILTER 0x40 /* BPF filtering is supported */ #define JUNIPER_BPF_EXT 0x80 /* extensions present */ #define JUNIPER_MGC_NUMBER 0x4d4743 /* = "MGC" */ #define JUNIPER_LSQ_COOKIE_RE (1 << 3) #define JUNIPER_LSQ_COOKIE_DIR (1 << 2) #define JUNIPER_LSQ_L3_PROTO_SHIFT 4 #define JUNIPER_LSQ_L3_PROTO_MASK (0x17 << JUNIPER_LSQ_L3_PROTO_SHIFT) #define JUNIPER_LSQ_L3_PROTO_IPV4 (0 << JUNIPER_LSQ_L3_PROTO_SHIFT) #define JUNIPER_LSQ_L3_PROTO_IPV6 (1 << JUNIPER_LSQ_L3_PROTO_SHIFT) #define JUNIPER_LSQ_L3_PROTO_MPLS (2 << JUNIPER_LSQ_L3_PROTO_SHIFT) #define JUNIPER_LSQ_L3_PROTO_ISO (3 << JUNIPER_LSQ_L3_PROTO_SHIFT) #define AS_PIC_COOKIE_LEN 8 #define JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE 1 #define JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE 2 #define JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE 3 #define JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE 4 #define JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE 5 #ifdef DLT_JUNIPER_ES static const struct tok juniper_ipsec_type_values[] = { { JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE, "ESP ENCR-AUTH" }, { JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE, "ESP ENCR-AH AUTH" }, { JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE, "ESP AUTH" }, { JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE, "AH AUTH" }, { JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE, "ESP ENCR" }, { 0, NULL} }; #endif static const struct tok juniper_direction_values[] = { { JUNIPER_BPF_IN, "In"}, { JUNIPER_BPF_OUT, "Out"}, { 0, NULL} }; /* codepoints for encoding extensions to a .pcap file */ enum { JUNIPER_EXT_TLV_IFD_IDX = 1, JUNIPER_EXT_TLV_IFD_NAME = 2, JUNIPER_EXT_TLV_IFD_MEDIATYPE = 3, JUNIPER_EXT_TLV_IFL_IDX = 4, JUNIPER_EXT_TLV_IFL_UNIT = 5, JUNIPER_EXT_TLV_IFL_ENCAPS = 6, JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE = 7, JUNIPER_EXT_TLV_TTP_IFL_ENCAPS = 8 }; /* 1 byte type and 1-byte length */ #define JUNIPER_EXT_TLV_OVERHEAD 2U static const struct tok jnx_ext_tlv_values[] = { { JUNIPER_EXT_TLV_IFD_IDX, "Device Interface Index" }, { JUNIPER_EXT_TLV_IFD_NAME,"Device Interface Name" }, { JUNIPER_EXT_TLV_IFD_MEDIATYPE, "Device Media Type" }, { JUNIPER_EXT_TLV_IFL_IDX, "Logical Interface Index" }, { JUNIPER_EXT_TLV_IFL_UNIT,"Logical Unit Number" }, { JUNIPER_EXT_TLV_IFL_ENCAPS, "Logical Interface Encapsulation" }, { JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE, "TTP derived Device Media Type" }, { JUNIPER_EXT_TLV_TTP_IFL_ENCAPS, "TTP derived Logical Interface Encapsulation" }, { 0, NULL } }; static const struct tok jnx_flag_values[] = { { JUNIPER_BPF_EXT, "Ext" }, { JUNIPER_BPF_FILTER, "Filter" }, { JUNIPER_BPF_IIF, "IIF" }, { JUNIPER_BPF_NO_L2, "no-L2" }, { JUNIPER_BPF_PKT_IN, "In" }, { 0, NULL } }; #define JUNIPER_IFML_ETHER 1 #define JUNIPER_IFML_FDDI 2 #define JUNIPER_IFML_TOKENRING 3 #define JUNIPER_IFML_PPP 4 #define JUNIPER_IFML_FRAMERELAY 5 #define JUNIPER_IFML_CISCOHDLC 6 #define JUNIPER_IFML_SMDSDXI 7 #define JUNIPER_IFML_ATMPVC 8 #define JUNIPER_IFML_PPP_CCC 9 #define JUNIPER_IFML_FRAMERELAY_CCC 10 #define JUNIPER_IFML_IPIP 11 #define JUNIPER_IFML_GRE 12 #define JUNIPER_IFML_PIM 13 #define JUNIPER_IFML_PIMD 14 #define JUNIPER_IFML_CISCOHDLC_CCC 15 #define JUNIPER_IFML_VLAN_CCC 16 #define JUNIPER_IFML_MLPPP 17 #define JUNIPER_IFML_MLFR 18 #define JUNIPER_IFML_ML 19 #define JUNIPER_IFML_LSI 20 #define JUNIPER_IFML_DFE 21 #define JUNIPER_IFML_ATM_CELLRELAY_CCC 22 #define JUNIPER_IFML_CRYPTO 23 #define JUNIPER_IFML_GGSN 24 #define JUNIPER_IFML_LSI_PPP 25 #define JUNIPER_IFML_LSI_CISCOHDLC 26 #define JUNIPER_IFML_PPP_TCC 27 #define JUNIPER_IFML_FRAMERELAY_TCC 28 #define JUNIPER_IFML_CISCOHDLC_TCC 29 #define JUNIPER_IFML_ETHERNET_CCC 30 #define JUNIPER_IFML_VT 31 #define JUNIPER_IFML_EXTENDED_VLAN_CCC 32 #define JUNIPER_IFML_ETHER_OVER_ATM 33 #define JUNIPER_IFML_MONITOR 34 #define JUNIPER_IFML_ETHERNET_TCC 35 #define JUNIPER_IFML_VLAN_TCC 36 #define JUNIPER_IFML_EXTENDED_VLAN_TCC 37 #define JUNIPER_IFML_CONTROLLER 38 #define JUNIPER_IFML_MFR 39 #define JUNIPER_IFML_LS 40 #define JUNIPER_IFML_ETHERNET_VPLS 41 #define JUNIPER_IFML_ETHERNET_VLAN_VPLS 42 #define JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS 43 #define JUNIPER_IFML_LT 44 #define JUNIPER_IFML_SERVICES 45 #define JUNIPER_IFML_ETHER_VPLS_OVER_ATM 46 #define JUNIPER_IFML_FR_PORT_CCC 47 #define JUNIPER_IFML_FRAMERELAY_EXT_CCC 48 #define JUNIPER_IFML_FRAMERELAY_EXT_TCC 49 #define JUNIPER_IFML_FRAMERELAY_FLEX 50 #define JUNIPER_IFML_GGSNI 51 #define JUNIPER_IFML_ETHERNET_FLEX 52 #define JUNIPER_IFML_COLLECTOR 53 #define JUNIPER_IFML_AGGREGATOR 54 #define JUNIPER_IFML_LAPD 55 #define JUNIPER_IFML_PPPOE 56 #define JUNIPER_IFML_PPP_SUBORDINATE 57 #define JUNIPER_IFML_CISCOHDLC_SUBORDINATE 58 #define JUNIPER_IFML_DFC 59 #define JUNIPER_IFML_PICPEER 60 static const struct tok juniper_ifmt_values[] = { { JUNIPER_IFML_ETHER, "Ethernet" }, { JUNIPER_IFML_FDDI, "FDDI" }, { JUNIPER_IFML_TOKENRING, "Token-Ring" }, { JUNIPER_IFML_PPP, "PPP" }, { JUNIPER_IFML_PPP_SUBORDINATE, "PPP-Subordinate" }, { JUNIPER_IFML_FRAMERELAY, "Frame-Relay" }, { JUNIPER_IFML_CISCOHDLC, "Cisco-HDLC" }, { JUNIPER_IFML_SMDSDXI, "SMDS-DXI" }, { JUNIPER_IFML_ATMPVC, "ATM-PVC" }, { JUNIPER_IFML_PPP_CCC, "PPP-CCC" }, { JUNIPER_IFML_FRAMERELAY_CCC, "Frame-Relay-CCC" }, { JUNIPER_IFML_FRAMERELAY_EXT_CCC, "Extended FR-CCC" }, { JUNIPER_IFML_IPIP, "IP-over-IP" }, { JUNIPER_IFML_GRE, "GRE" }, { JUNIPER_IFML_PIM, "PIM-Encapsulator" }, { JUNIPER_IFML_PIMD, "PIM-Decapsulator" }, { JUNIPER_IFML_CISCOHDLC_CCC, "Cisco-HDLC-CCC" }, { JUNIPER_IFML_VLAN_CCC, "VLAN-CCC" }, { JUNIPER_IFML_EXTENDED_VLAN_CCC, "Extended-VLAN-CCC" }, { JUNIPER_IFML_MLPPP, "Multilink-PPP" }, { JUNIPER_IFML_MLFR, "Multilink-FR" }, { JUNIPER_IFML_MFR, "Multilink-FR-UNI-NNI" }, { JUNIPER_IFML_ML, "Multilink" }, { JUNIPER_IFML_LS, "LinkService" }, { JUNIPER_IFML_LSI, "LSI" }, { JUNIPER_IFML_ATM_CELLRELAY_CCC, "ATM-CCC-Cell-Relay" }, { JUNIPER_IFML_CRYPTO, "IPSEC-over-IP" }, { JUNIPER_IFML_GGSN, "GGSN" }, { JUNIPER_IFML_PPP_TCC, "PPP-TCC" }, { JUNIPER_IFML_FRAMERELAY_TCC, "Frame-Relay-TCC" }, { JUNIPER_IFML_FRAMERELAY_EXT_TCC, "Extended FR-TCC" }, { JUNIPER_IFML_CISCOHDLC_TCC, "Cisco-HDLC-TCC" }, { JUNIPER_IFML_ETHERNET_CCC, "Ethernet-CCC" }, { JUNIPER_IFML_VT, "VPN-Loopback-tunnel" }, { JUNIPER_IFML_ETHER_OVER_ATM, "Ethernet-over-ATM" }, { JUNIPER_IFML_ETHER_VPLS_OVER_ATM, "Ethernet-VPLS-over-ATM" }, { JUNIPER_IFML_MONITOR, "Monitor" }, { JUNIPER_IFML_ETHERNET_TCC, "Ethernet-TCC" }, { JUNIPER_IFML_VLAN_TCC, "VLAN-TCC" }, { JUNIPER_IFML_EXTENDED_VLAN_TCC, "Extended-VLAN-TCC" }, { JUNIPER_IFML_CONTROLLER, "Controller" }, { JUNIPER_IFML_ETHERNET_VPLS, "VPLS" }, { JUNIPER_IFML_ETHERNET_VLAN_VPLS, "VLAN-VPLS" }, { JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS, "Extended-VLAN-VPLS" }, { JUNIPER_IFML_LT, "Logical-tunnel" }, { JUNIPER_IFML_SERVICES, "General-Services" }, { JUNIPER_IFML_PPPOE, "PPPoE" }, { JUNIPER_IFML_ETHERNET_FLEX, "Flexible-Ethernet-Services" }, { JUNIPER_IFML_FRAMERELAY_FLEX, "Flexible-FrameRelay" }, { JUNIPER_IFML_COLLECTOR, "Flow-collection" }, { JUNIPER_IFML_PICPEER, "PIC Peer" }, { JUNIPER_IFML_DFC, "Dynamic-Flow-Capture" }, {0, NULL} }; #define JUNIPER_IFLE_ATM_SNAP 2 #define JUNIPER_IFLE_ATM_NLPID 3 #define JUNIPER_IFLE_ATM_VCMUX 4 #define JUNIPER_IFLE_ATM_LLC 5 #define JUNIPER_IFLE_ATM_PPP_VCMUX 6 #define JUNIPER_IFLE_ATM_PPP_LLC 7 #define JUNIPER_IFLE_ATM_PPP_FUNI 8 #define JUNIPER_IFLE_ATM_CCC 9 #define JUNIPER_IFLE_FR_NLPID 10 #define JUNIPER_IFLE_FR_SNAP 11 #define JUNIPER_IFLE_FR_PPP 12 #define JUNIPER_IFLE_FR_CCC 13 #define JUNIPER_IFLE_ENET2 14 #define JUNIPER_IFLE_IEEE8023_SNAP 15 #define JUNIPER_IFLE_IEEE8023_LLC 16 #define JUNIPER_IFLE_PPP 17 #define JUNIPER_IFLE_CISCOHDLC 18 #define JUNIPER_IFLE_PPP_CCC 19 #define JUNIPER_IFLE_IPIP_NULL 20 #define JUNIPER_IFLE_PIM_NULL 21 #define JUNIPER_IFLE_GRE_NULL 22 #define JUNIPER_IFLE_GRE_PPP 23 #define JUNIPER_IFLE_PIMD_DECAPS 24 #define JUNIPER_IFLE_CISCOHDLC_CCC 25 #define JUNIPER_IFLE_ATM_CISCO_NLPID 26 #define JUNIPER_IFLE_VLAN_CCC 27 #define JUNIPER_IFLE_MLPPP 28 #define JUNIPER_IFLE_MLFR 29 #define JUNIPER_IFLE_LSI_NULL 30 #define JUNIPER_IFLE_AGGREGATE_UNUSED 31 #define JUNIPER_IFLE_ATM_CELLRELAY_CCC 32 #define JUNIPER_IFLE_CRYPTO 33 #define JUNIPER_IFLE_GGSN 34 #define JUNIPER_IFLE_ATM_TCC 35 #define JUNIPER_IFLE_FR_TCC 36 #define JUNIPER_IFLE_PPP_TCC 37 #define JUNIPER_IFLE_CISCOHDLC_TCC 38 #define JUNIPER_IFLE_ETHERNET_CCC 39 #define JUNIPER_IFLE_VT 40 #define JUNIPER_IFLE_ATM_EOA_LLC 41 #define JUNIPER_IFLE_EXTENDED_VLAN_CCC 42 #define JUNIPER_IFLE_ATM_SNAP_TCC 43 #define JUNIPER_IFLE_MONITOR 44 #define JUNIPER_IFLE_ETHERNET_TCC 45 #define JUNIPER_IFLE_VLAN_TCC 46 #define JUNIPER_IFLE_EXTENDED_VLAN_TCC 47 #define JUNIPER_IFLE_MFR 48 #define JUNIPER_IFLE_ETHERNET_VPLS 49 #define JUNIPER_IFLE_ETHERNET_VLAN_VPLS 50 #define JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS 51 #define JUNIPER_IFLE_SERVICES 52 #define JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC 53 #define JUNIPER_IFLE_FR_PORT_CCC 54 #define JUNIPER_IFLE_ATM_MLPPP_LLC 55 #define JUNIPER_IFLE_ATM_EOA_CCC 56 #define JUNIPER_IFLE_LT_VLAN 57 #define JUNIPER_IFLE_COLLECTOR 58 #define JUNIPER_IFLE_AGGREGATOR 59 #define JUNIPER_IFLE_LAPD 60 #define JUNIPER_IFLE_ATM_PPPOE_LLC 61 #define JUNIPER_IFLE_ETHERNET_PPPOE 62 #define JUNIPER_IFLE_PPPOE 63 #define JUNIPER_IFLE_PPP_SUBORDINATE 64 #define JUNIPER_IFLE_CISCOHDLC_SUBORDINATE 65 #define JUNIPER_IFLE_DFC 66 #define JUNIPER_IFLE_PICPEER 67 static const struct tok juniper_ifle_values[] = { { JUNIPER_IFLE_AGGREGATOR, "Aggregator" }, { JUNIPER_IFLE_ATM_CCC, "CCC over ATM" }, { JUNIPER_IFLE_ATM_CELLRELAY_CCC, "ATM CCC Cell Relay" }, { JUNIPER_IFLE_ATM_CISCO_NLPID, "CISCO compatible NLPID" }, { JUNIPER_IFLE_ATM_EOA_CCC, "Ethernet over ATM CCC" }, { JUNIPER_IFLE_ATM_EOA_LLC, "Ethernet over ATM LLC" }, { JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC, "Ethernet VPLS over ATM LLC" }, { JUNIPER_IFLE_ATM_LLC, "ATM LLC" }, { JUNIPER_IFLE_ATM_MLPPP_LLC, "MLPPP over ATM LLC" }, { JUNIPER_IFLE_ATM_NLPID, "ATM NLPID" }, { JUNIPER_IFLE_ATM_PPPOE_LLC, "PPPoE over ATM LLC" }, { JUNIPER_IFLE_ATM_PPP_FUNI, "PPP over FUNI" }, { JUNIPER_IFLE_ATM_PPP_LLC, "PPP over ATM LLC" }, { JUNIPER_IFLE_ATM_PPP_VCMUX, "PPP over ATM VCMUX" }, { JUNIPER_IFLE_ATM_SNAP, "ATM SNAP" }, { JUNIPER_IFLE_ATM_SNAP_TCC, "ATM SNAP TCC" }, { JUNIPER_IFLE_ATM_TCC, "ATM VCMUX TCC" }, { JUNIPER_IFLE_ATM_VCMUX, "ATM VCMUX" }, { JUNIPER_IFLE_CISCOHDLC, "C-HDLC" }, { JUNIPER_IFLE_CISCOHDLC_CCC, "C-HDLC CCC" }, { JUNIPER_IFLE_CISCOHDLC_SUBORDINATE, "C-HDLC via dialer" }, { JUNIPER_IFLE_CISCOHDLC_TCC, "C-HDLC TCC" }, { JUNIPER_IFLE_COLLECTOR, "Collector" }, { JUNIPER_IFLE_CRYPTO, "Crypto" }, { JUNIPER_IFLE_ENET2, "Ethernet" }, { JUNIPER_IFLE_ETHERNET_CCC, "Ethernet CCC" }, { JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS, "Extended VLAN VPLS" }, { JUNIPER_IFLE_ETHERNET_PPPOE, "PPPoE over Ethernet" }, { JUNIPER_IFLE_ETHERNET_TCC, "Ethernet TCC" }, { JUNIPER_IFLE_ETHERNET_VLAN_VPLS, "VLAN VPLS" }, { JUNIPER_IFLE_ETHERNET_VPLS, "VPLS" }, { JUNIPER_IFLE_EXTENDED_VLAN_CCC, "Extended VLAN CCC" }, { JUNIPER_IFLE_EXTENDED_VLAN_TCC, "Extended VLAN TCC" }, { JUNIPER_IFLE_FR_CCC, "FR CCC" }, { JUNIPER_IFLE_FR_NLPID, "FR NLPID" }, { JUNIPER_IFLE_FR_PORT_CCC, "FR CCC" }, { JUNIPER_IFLE_FR_PPP, "FR PPP" }, { JUNIPER_IFLE_FR_SNAP, "FR SNAP" }, { JUNIPER_IFLE_FR_TCC, "FR TCC" }, { JUNIPER_IFLE_GGSN, "GGSN" }, { JUNIPER_IFLE_GRE_NULL, "GRE NULL" }, { JUNIPER_IFLE_GRE_PPP, "PPP over GRE" }, { JUNIPER_IFLE_IPIP_NULL, "IPIP" }, { JUNIPER_IFLE_LAPD, "LAPD" }, { JUNIPER_IFLE_LSI_NULL, "LSI Null" }, { JUNIPER_IFLE_LT_VLAN, "LT VLAN" }, { JUNIPER_IFLE_MFR, "MFR" }, { JUNIPER_IFLE_MLFR, "MLFR" }, { JUNIPER_IFLE_MLPPP, "MLPPP" }, { JUNIPER_IFLE_MONITOR, "Monitor" }, { JUNIPER_IFLE_PIMD_DECAPS, "PIMd" }, { JUNIPER_IFLE_PIM_NULL, "PIM Null" }, { JUNIPER_IFLE_PPP, "PPP" }, { JUNIPER_IFLE_PPPOE, "PPPoE" }, { JUNIPER_IFLE_PPP_CCC, "PPP CCC" }, { JUNIPER_IFLE_PPP_SUBORDINATE, "" }, { JUNIPER_IFLE_PPP_TCC, "PPP TCC" }, { JUNIPER_IFLE_SERVICES, "General Services" }, { JUNIPER_IFLE_VLAN_CCC, "VLAN CCC" }, { JUNIPER_IFLE_VLAN_TCC, "VLAN TCC" }, { JUNIPER_IFLE_VT, "VT" }, {0, NULL} }; struct juniper_cookie_table_t { uint32_t pictype; /* pic type */ uint8_t cookie_len; /* cookie len */ const char *s; /* pic name */ }; static const struct juniper_cookie_table_t juniper_cookie_table[] = { #ifdef DLT_JUNIPER_ATM1 { DLT_JUNIPER_ATM1, 4, "ATM1"}, #endif #ifdef DLT_JUNIPER_ATM2 { DLT_JUNIPER_ATM2, 8, "ATM2"}, #endif #ifdef DLT_JUNIPER_MLPPP { DLT_JUNIPER_MLPPP, 2, "MLPPP"}, #endif #ifdef DLT_JUNIPER_MLFR { DLT_JUNIPER_MLFR, 2, "MLFR"}, #endif #ifdef DLT_JUNIPER_MFR { DLT_JUNIPER_MFR, 4, "MFR"}, #endif #ifdef DLT_JUNIPER_PPPOE { DLT_JUNIPER_PPPOE, 0, "PPPoE"}, #endif #ifdef DLT_JUNIPER_PPPOE_ATM { DLT_JUNIPER_PPPOE_ATM, 0, "PPPoE ATM"}, #endif #ifdef DLT_JUNIPER_GGSN { DLT_JUNIPER_GGSN, 8, "GGSN"}, #endif #ifdef DLT_JUNIPER_MONITOR { DLT_JUNIPER_MONITOR, 8, "MONITOR"}, #endif #ifdef DLT_JUNIPER_SERVICES { DLT_JUNIPER_SERVICES, 8, "AS"}, #endif #ifdef DLT_JUNIPER_ES { DLT_JUNIPER_ES, 0, "ES"}, #endif { 0, 0, NULL } }; struct juniper_l2info_t { uint32_t length; uint32_t caplen; uint32_t pictype; uint8_t direction; u_int header_len; uint8_t cookie_len; uint8_t cookie_type; uint8_t cookie[8]; u_int bundle; uint16_t proto; uint8_t flags; }; #define LS_COOKIE_ID 0x54 #define AS_COOKIE_ID 0x47 #define LS_MLFR_COOKIE_LEN 4 #define ML_MLFR_COOKIE_LEN 2 #define LS_MFR_COOKIE_LEN 6 #define ATM1_COOKIE_LEN 4 #define ATM2_COOKIE_LEN 8 #define ATM2_PKT_TYPE_MASK 0x70 #define ATM2_GAP_COUNT_MASK 0x3F #define JUNIPER_PROTO_NULL 1 #define JUNIPER_PROTO_IPV4 2 #define JUNIPER_PROTO_IPV6 6 #define MFR_BE_MASK 0xc0 #ifdef DLT_JUNIPER_GGSN static const struct tok juniper_protocol_values[] = { { JUNIPER_PROTO_NULL, "Null" }, { JUNIPER_PROTO_IPV4, "IPv4" }, { JUNIPER_PROTO_IPV6, "IPv6" }, { 0, NULL} }; #endif static int ip_heuristic_guess(netdissect_options *, const u_char *, u_int); #ifdef DLT_JUNIPER_ATM2 static int juniper_ppp_heuristic_guess(netdissect_options *, const u_char *, u_int); #endif static int juniper_parse_header(netdissect_options *, const u_char *, const struct pcap_pkthdr *, struct juniper_l2info_t *); #ifdef DLT_JUNIPER_GGSN void juniper_ggsn_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; struct juniper_ggsn_header { nd_uint8_t svc_id; nd_uint8_t flags_len; nd_uint8_t proto; nd_uint8_t flags; nd_uint16_t vlan_id; nd_byte res[2]; }; const struct juniper_ggsn_header *gh; uint8_t proto; ndo->ndo_protocol = "juniper_ggsn"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_GGSN; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; gh = (struct juniper_ggsn_header *)&l2info.cookie; /* use EXTRACT_, not GET_ (not packet buffer pointer) */ proto = EXTRACT_U_1(gh->proto); if (ndo->ndo_eflag) { ND_PRINT("proto %s (%u), vlan %u: ", tok2str(juniper_protocol_values,"Unknown",proto), proto, EXTRACT_BE_U_2(gh->vlan_id)); } switch (proto) { case JUNIPER_PROTO_IPV4: ip_print(ndo, p, l2info.length); break; case JUNIPER_PROTO_IPV6: ip6_print(ndo, p, l2info.length); break; default: if (!ndo->ndo_eflag) ND_PRINT("unknown GGSN proto (%u)", proto); } ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_ES void juniper_es_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; struct juniper_ipsec_header { nd_uint16_t sa_index; nd_uint8_t ttl; nd_uint8_t type; nd_uint32_t spi; nd_ipv4 src_ip; nd_ipv4 dst_ip; }; u_int rewrite_len,es_type_bundle; const struct juniper_ipsec_header *ih; ndo->ndo_protocol = "juniper_es"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_ES; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; ih = (const struct juniper_ipsec_header *)p; ND_TCHECK_SIZE(ih); switch (GET_U_1(ih->type)) { case JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE: case JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE: rewrite_len = 0; es_type_bundle = 1; break; case JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE: case JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE: case JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE: rewrite_len = 16; es_type_bundle = 0; break; default: ND_PRINT("ES Invalid type %u, length %u", GET_U_1(ih->type), l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; } l2info.length-=rewrite_len; p+=rewrite_len; if (ndo->ndo_eflag) { if (!es_type_bundle) { ND_PRINT("ES SA, index %u, ttl %u type %s (%u), spi %u, Tunnel %s > %s, length %u\n", GET_BE_U_2(ih->sa_index), GET_U_1(ih->ttl), tok2str(juniper_ipsec_type_values,"Unknown",GET_U_1(ih->type)), GET_U_1(ih->type), GET_BE_U_4(ih->spi), GET_IPADDR_STRING(ih->src_ip), GET_IPADDR_STRING(ih->dst_ip), l2info.length); } else { ND_PRINT("ES SA, index %u, ttl %u type %s (%u), length %u\n", GET_BE_U_2(ih->sa_index), GET_U_1(ih->ttl), tok2str(juniper_ipsec_type_values,"Unknown",GET_U_1(ih->type)), GET_U_1(ih->type), l2info.length); } } ip_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_MONITOR void juniper_monitor_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; struct juniper_monitor_header { nd_uint8_t pkt_type; nd_byte padding; nd_uint16_t iif; nd_uint32_t service_id; }; const struct juniper_monitor_header *mh; ndo->ndo_protocol = "juniper_monitor"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_MONITOR; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; mh = (const struct juniper_monitor_header *)p; ND_TCHECK_SIZE(mh); if (ndo->ndo_eflag) ND_PRINT("service-id %u, iif %u, pkt-type %u: ", GET_BE_U_4(mh->service_id), GET_BE_U_2(mh->iif), GET_U_1(mh->pkt_type)); /* no proto field - lets guess by first byte of IP header*/ ip_heuristic_guess (ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_SERVICES void juniper_services_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; struct juniper_services_header { nd_uint8_t svc_id; nd_uint8_t flags_len; nd_uint16_t svc_set_id; nd_byte pad; nd_uint24_t dir_iif; }; const struct juniper_services_header *sh; ndo->ndo_protocol = "juniper_services"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_SERVICES; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; sh = (const struct juniper_services_header *)p; ND_TCHECK_SIZE(sh); if (ndo->ndo_eflag) ND_PRINT("service-id %u flags 0x%02x service-set-id 0x%04x iif %u: ", GET_U_1(sh->svc_id), GET_U_1(sh->flags_len), GET_BE_U_2(sh->svc_set_id), GET_BE_U_3(sh->dir_iif)); /* no proto field - lets guess by first byte of IP header*/ ip_heuristic_guess (ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_PPPOE void juniper_pppoe_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_pppoe"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_PPPOE; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* this DLT contains nothing but raw ethernet frames */ ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_ETHER void juniper_ether_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_ether"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_ETHER; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* this DLT contains nothing but raw Ethernet frames */ ndo->ndo_ll_hdr_len += l2info.header_len + ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL); } #endif #ifdef DLT_JUNIPER_PPP void juniper_ppp_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_ppp"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_PPP; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* this DLT contains nothing but raw ppp frames */ ppp_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_FRELAY void juniper_frelay_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_frelay"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_FRELAY; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* this DLT contains nothing but raw frame-relay frames */ fr_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_CHDLC void juniper_chdlc_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_chdlc"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_CHDLC; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* this DLT contains nothing but raw c-hdlc frames */ chdlc_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_PPPOE_ATM void juniper_pppoe_atm_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; uint16_t extracted_ethertype; ndo->ndo_protocol = "juniper_pppoe_atm"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_PPPOE_ATM; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; extracted_ethertype = GET_BE_U_2(p); /* this DLT contains nothing but raw PPPoE frames, * prepended with a type field*/ if (ethertype_print(ndo, extracted_ethertype, p+ETHERTYPE_LEN, l2info.length-ETHERTYPE_LEN, l2info.caplen-ETHERTYPE_LEN, NULL, NULL) == 0) /* ether_type not known, probably it wasn't one */ ND_PRINT("unknown ethertype 0x%04x", extracted_ethertype); ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_MLPPP void juniper_mlppp_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_mlppp"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_MLPPP; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } /* suppress Bundle-ID if frame was captured on a child-link * best indicator if the cookie looks like a proto */ if (ndo->ndo_eflag && /* use EXTRACT_, not GET_ (not packet buffer pointer) */ EXTRACT_BE_U_2(&l2info.cookie) != PPP_OSI && /* use EXTRACT_, not GET_ (not packet buffer pointer) */ EXTRACT_BE_U_2(&l2info.cookie) != (PPP_ADDRESS << 8 | PPP_CONTROL)) ND_PRINT("Bundle-ID %u: ", l2info.bundle); p+=l2info.header_len; /* first try the LSQ protos */ switch(l2info.proto) { case JUNIPER_LSQ_L3_PROTO_IPV4: /* IP traffic going to the RE would not have a cookie * -> this must be incoming IS-IS over PPP */ if (l2info.cookie[4] == (JUNIPER_LSQ_COOKIE_RE|JUNIPER_LSQ_COOKIE_DIR)) ppp_print(ndo, p, l2info.length); else ip_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; case JUNIPER_LSQ_L3_PROTO_IPV6: ip6_print(ndo, p,l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; case JUNIPER_LSQ_L3_PROTO_MPLS: mpls_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; case JUNIPER_LSQ_L3_PROTO_ISO: isoclns_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; default: break; } /* zero length cookie ? */ /* use EXTRACT_, not GET_ (not packet buffer pointer) */ switch (EXTRACT_BE_U_2(&l2info.cookie)) { case PPP_OSI: ppp_print(ndo, p - 2, l2info.length + 2); break; case (PPP_ADDRESS << 8 | PPP_CONTROL): /* fall through */ default: ppp_print(ndo, p, l2info.length); break; } ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_MFR void juniper_mfr_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_mfr"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_MFR; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* child-link ? */ if (l2info.cookie_len == 0) { mfr_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; } /* first try the LSQ protos */ if (l2info.cookie_len == AS_PIC_COOKIE_LEN) { switch(l2info.proto) { case JUNIPER_LSQ_L3_PROTO_IPV4: ip_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; case JUNIPER_LSQ_L3_PROTO_IPV6: ip6_print(ndo, p,l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; case JUNIPER_LSQ_L3_PROTO_MPLS: mpls_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; case JUNIPER_LSQ_L3_PROTO_ISO: isoclns_print(ndo, p, l2info.length); ndo->ndo_ll_hdr_len += l2info.header_len; return; default: break; } ndo->ndo_ll_hdr_len += l2info.header_len; return; } /* suppress Bundle-ID if frame was captured on a child-link */ /* use EXTRACT_, not GET_ (not packet buffer pointer) */ if (ndo->ndo_eflag && EXTRACT_BE_U_4(l2info.cookie) != 1) ND_PRINT("Bundle-ID %u, ", l2info.bundle); switch (l2info.proto) { case (LLCSAP_ISONS<<8 | LLCSAP_ISONS): /* At least one byte is required */ ND_TCHECK_LEN(p, 1); isoclns_print(ndo, p + 1, l2info.length - 1); break; case (LLC_UI<<8 | NLPID_Q933): case (LLC_UI<<8 | NLPID_IP): case (LLC_UI<<8 | NLPID_IP6): /* pass IP{4,6} to the OSI layer for proper link-layer printing */ isoclns_print(ndo, p - 1, l2info.length + 1); break; default: ND_PRINT("unknown protocol 0x%04x, length %u", l2info.proto, l2info.length); } ndo->ndo_ll_hdr_len += l2info.header_len; } #endif #ifdef DLT_JUNIPER_MLFR void juniper_mlfr_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_mlfr"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_MLFR; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; /* suppress Bundle-ID if frame was captured on a child-link */ /* use EXTRACT_, not GET_ (not packet buffer pointer) */ if (ndo->ndo_eflag && EXTRACT_BE_U_4(l2info.cookie) != 1) ND_PRINT("Bundle-ID %u, ", l2info.bundle); switch (l2info.proto) { case (LLC_UI): case (LLC_UI<<8): isoclns_print(ndo, p, l2info.length); break; case (LLC_UI<<8 | NLPID_Q933): case (LLC_UI<<8 | NLPID_IP): case (LLC_UI<<8 | NLPID_IP6): /* pass IP{4,6} to the OSI layer for proper link-layer printing */ isoclns_print(ndo, p - 1, l2info.length + 1); break; default: ND_PRINT("unknown protocol 0x%04x, length %u", l2info.proto, l2info.length); } ndo->ndo_ll_hdr_len += l2info.header_len; } #endif /* * ATM1 PIC cookie format * * +-----+-------------------------+-------------------------------+ * |fmtid| vc index | channel ID | * +-----+-------------------------+-------------------------------+ */ #ifdef DLT_JUNIPER_ATM1 void juniper_atm1_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { int llc_hdrlen; struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_atm1"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_ATM1; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; if (l2info.cookie[0] == 0x80) { /* OAM cell ? */ oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC); ndo->ndo_ll_hdr_len += l2info.header_len; return; } if (GET_BE_U_3(p) == 0xfefe03 || /* NLPID encaps ? */ GET_BE_U_3(p) == 0xaaaa03) { /* SNAP encaps ? */ llc_hdrlen = llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL); if (llc_hdrlen > 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } } if (GET_U_1(p) == 0x03) { /* Cisco style NLPID encaps ? */ /* At least one byte is required */ ND_TCHECK_LEN(p, 1); isoclns_print(ndo, p + 1, l2info.length - 1); /* FIXME check if frame was recognized */ ndo->ndo_ll_hdr_len += l2info.header_len; return; } if (ip_heuristic_guess(ndo, p, l2info.length) != 0) { /* last try - vcmux encaps ? */ ndo->ndo_ll_hdr_len += l2info.header_len; return; } ndo->ndo_ll_hdr_len += l2info.header_len; } #endif /* * ATM2 PIC cookie format * * +-------------------------------+---------+---+-----+-----------+ * | channel ID | reserv |AAL| CCRQ| gap cnt | * +-------------------------------+---------+---+-----+-----------+ */ #ifdef DLT_JUNIPER_ATM2 void juniper_atm2_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { int llc_hdrlen; struct juniper_l2info_t l2info; ndo->ndo_protocol = "juniper_atm2"; memset(&l2info, 0, sizeof(l2info)); l2info.pictype = DLT_JUNIPER_ATM2; if (juniper_parse_header(ndo, p, h, &l2info) == 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } p+=l2info.header_len; if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { /* OAM cell ? */ oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC); ndo->ndo_ll_hdr_len += l2info.header_len; return; } if (GET_BE_U_3(p) == 0xfefe03 || /* NLPID encaps ? */ GET_BE_U_3(p) == 0xaaaa03) { /* SNAP encaps ? */ llc_hdrlen = llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL); if (llc_hdrlen > 0) { ndo->ndo_ll_hdr_len += l2info.header_len; return; } } if (l2info.direction != JUNIPER_BPF_PKT_IN && /* ether-over-1483 encaps ? */ /* use EXTRACT_, not GET_ (not packet buffer pointer) */ (EXTRACT_BE_U_4(l2info.cookie) & ATM2_GAP_COUNT_MASK)) { ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL); ndo->ndo_ll_hdr_len += l2info.header_len; return; } if (GET_U_1(p) == 0x03) { /* Cisco style NLPID encaps ? */ /* At least one byte is required */ ND_TCHECK_LEN(p, 1); isoclns_print(ndo, p + 1, l2info.length - 1); /* FIXME check if frame was recognized */ ndo->ndo_ll_hdr_len += l2info.header_len; return; } if(juniper_ppp_heuristic_guess(ndo, p, l2info.length) != 0) { /* PPPoA vcmux encaps ? */ ndo->ndo_ll_hdr_len += l2info.header_len; return; } if (ip_heuristic_guess(ndo, p, l2info.length) != 0) { /* last try - vcmux encaps ? */ ndo->ndo_ll_hdr_len += l2info.header_len; return; } ndo->ndo_ll_hdr_len += l2info.header_len; } /* try to guess, based on all PPP protos that are supported in * a juniper router if the payload data is encapsulated using PPP */ static int juniper_ppp_heuristic_guess(netdissect_options *ndo, const u_char *p, u_int length) { switch(GET_BE_U_2(p)) { case PPP_IP : case PPP_OSI : case PPP_MPLS_UCAST : case PPP_MPLS_MCAST : case PPP_IPCP : case PPP_OSICP : case PPP_MPLSCP : case PPP_LCP : case PPP_PAP : case PPP_CHAP : case PPP_ML : case PPP_IPV6 : case PPP_IPV6CP : ppp_print(ndo, p, length); break; default: return 0; /* did not find a ppp header */ break; } return 1; /* we printed a ppp packet */ } #endif static int ip_heuristic_guess(netdissect_options *ndo, const u_char *p, u_int length) { switch(GET_U_1(p)) { case 0x45: case 0x46: case 0x47: case 0x48: case 0x49: case 0x4a: case 0x4b: case 0x4c: case 0x4d: case 0x4e: case 0x4f: ip_print(ndo, p, length); break; case 0x60: case 0x61: case 0x62: case 0x63: case 0x64: case 0x65: case 0x66: case 0x67: case 0x68: case 0x69: case 0x6a: case 0x6b: case 0x6c: case 0x6d: case 0x6e: case 0x6f: ip6_print(ndo, p, length); break; default: return 0; /* did not find a ip header */ break; } return 1; /* we printed an v4/v6 packet */ } static int juniper_read_tlv_value(netdissect_options *ndo, const u_char *p, u_int tlv_type, u_int tlv_len) { int tlv_value; /* TLVs < 128 are little endian encoded */ if (tlv_type < 128) { switch (tlv_len) { case 1: tlv_value = GET_U_1(p); break; case 2: tlv_value = GET_LE_U_2(p); break; case 3: tlv_value = GET_LE_U_3(p); break; case 4: tlv_value = GET_LE_U_4(p); break; default: tlv_value = -1; break; } } else { /* TLVs >= 128 are big endian encoded */ switch (tlv_len) { case 1: tlv_value = GET_U_1(p); break; case 2: tlv_value = GET_BE_U_2(p); break; case 3: tlv_value = GET_BE_U_3(p); break; case 4: tlv_value = GET_BE_U_4(p); break; default: tlv_value = -1; break; } } return tlv_value; } static int juniper_parse_header(netdissect_options *ndo, const u_char *p, const struct pcap_pkthdr *h, struct juniper_l2info_t *l2info) { const struct juniper_cookie_table_t *lp; u_int idx, extension_length, jnx_header_len = 0; uint8_t tlv_type,tlv_len; #ifdef DLT_JUNIPER_ATM2 uint32_t control_word; #endif int tlv_value; const u_char *tptr; l2info->header_len = 0; l2info->cookie_len = 0; l2info->proto = 0; l2info->length = h->len; l2info->caplen = h->caplen; l2info->flags = GET_U_1(p + 3); l2info->direction = GET_U_1(p + 3) & JUNIPER_BPF_PKT_IN; if (GET_BE_U_3(p) != JUNIPER_MGC_NUMBER) { /* magic number found ? */ ND_PRINT("no magic-number found!"); return 0; } if (ndo->ndo_eflag) /* print direction */ ND_PRINT("%3s ", tok2str(juniper_direction_values, "---", l2info->direction)); /* magic number + flags */ jnx_header_len = 4; if (ndo->ndo_vflag > 1) ND_PRINT("\n\tJuniper PCAP Flags [%s]", bittok2str(jnx_flag_values, "none", l2info->flags)); /* extensions present ? - calculate how much bytes to skip */ if ((l2info->flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) { tptr = p+jnx_header_len; /* ok to read extension length ? */ extension_length = GET_BE_U_2(tptr); jnx_header_len += 2; tptr +=2; /* nail up the total length - * just in case something goes wrong * with TLV parsing */ jnx_header_len += extension_length; if (ndo->ndo_vflag > 1) ND_PRINT(", PCAP Extension(s) total length %u", extension_length); ND_TCHECK_LEN(tptr, extension_length); while (extension_length > JUNIPER_EXT_TLV_OVERHEAD) { tlv_type = GET_U_1(tptr); tptr++; tlv_len = GET_U_1(tptr); tptr++; tlv_value = 0; /* sanity checks */ if (tlv_type == 0 || tlv_len == 0) break; ND_ICHECK_U(extension_length, <, tlv_len + JUNIPER_EXT_TLV_OVERHEAD); if (ndo->ndo_vflag > 1) ND_PRINT("\n\t %s Extension TLV #%u, length %u, value ", tok2str(jnx_ext_tlv_values,"Unknown",tlv_type), tlv_type, tlv_len); tlv_value = juniper_read_tlv_value(ndo, tptr, tlv_type, tlv_len); switch (tlv_type) { case JUNIPER_EXT_TLV_IFD_NAME: /* FIXME */ break; case JUNIPER_EXT_TLV_IFD_MEDIATYPE: case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE: if (tlv_value != -1) { if (ndo->ndo_vflag > 1) ND_PRINT("%s (%u)", tok2str(juniper_ifmt_values, "Unknown", tlv_value), tlv_value); } break; case JUNIPER_EXT_TLV_IFL_ENCAPS: case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS: if (tlv_value != -1) { if (ndo->ndo_vflag > 1) ND_PRINT("%s (%u)", tok2str(juniper_ifle_values, "Unknown", tlv_value), tlv_value); } break; case JUNIPER_EXT_TLV_IFL_IDX: /* fall through */ case JUNIPER_EXT_TLV_IFL_UNIT: case JUNIPER_EXT_TLV_IFD_IDX: default: if (tlv_value != -1) { if (ndo->ndo_vflag > 1) ND_PRINT("%u", tlv_value); } break; } tptr+=tlv_len; extension_length -= tlv_len+JUNIPER_EXT_TLV_OVERHEAD; } if (ndo->ndo_vflag > 1) ND_PRINT("\n\t-----original packet-----\n\t"); } if ((l2info->flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) { if (ndo->ndo_eflag) ND_PRINT("no-L2-hdr, "); /* there is no link-layer present - * perform the v4/v6 heuristics * to figure out what it is */ ND_TCHECK_1(p + (jnx_header_len + 4)); if (ip_heuristic_guess(ndo, p + jnx_header_len + 4, l2info->length - (jnx_header_len + 4)) == 0) ND_PRINT("no IP-hdr found!"); l2info->header_len=jnx_header_len+4; return 0; /* stop parsing the output further */ } l2info->header_len = jnx_header_len; p+=l2info->header_len; l2info->length -= l2info->header_len; l2info->caplen -= l2info->header_len; /* search through the cookie table for one matching our PIC type */ lp = NULL; for (const struct juniper_cookie_table_t *table_lp = juniper_cookie_table; table_lp->s != NULL; table_lp++) { if (table_lp->pictype == l2info->pictype) { lp = table_lp; break; } } /* If we found one matching our PIC type, copy its values */ if (lp != NULL) { l2info->cookie_len += lp->cookie_len; switch (GET_U_1(p)) { case LS_COOKIE_ID: l2info->cookie_type = LS_COOKIE_ID; l2info->cookie_len += 2; break; case AS_COOKIE_ID: l2info->cookie_type = AS_COOKIE_ID; l2info->cookie_len = 8; break; default: l2info->bundle = l2info->cookie[0]; break; } #ifdef DLT_JUNIPER_MFR /* MFR child links don't carry cookies */ if (l2info->pictype == DLT_JUNIPER_MFR && (GET_U_1(p) & MFR_BE_MASK) == MFR_BE_MASK) { l2info->cookie_len = 0; } #endif l2info->header_len += l2info->cookie_len; l2info->length -= l2info->cookie_len; l2info->caplen -= l2info->cookie_len; if (ndo->ndo_eflag) ND_PRINT("%s-PIC, cookie-len %u", lp->s, l2info->cookie_len); if (l2info->cookie_len > 8) { nd_print_invalid(ndo); return 0; } if (l2info->cookie_len > 0) { ND_TCHECK_LEN(p, l2info->cookie_len); if (ndo->ndo_eflag) ND_PRINT(", cookie 0x"); for (idx = 0; idx < l2info->cookie_len; idx++) { l2info->cookie[idx] = GET_U_1(p + idx); /* copy cookie data */ if (ndo->ndo_eflag) ND_PRINT("%02x", GET_U_1(p + idx)); } } if (ndo->ndo_eflag) ND_PRINT(": "); /* print demarc b/w L2/L3*/ l2info->proto = GET_BE_U_2(p + l2info->cookie_len); } p+=l2info->cookie_len; /* DLT_ specific parsing */ switch(l2info->pictype) { #ifdef DLT_JUNIPER_MLPPP case DLT_JUNIPER_MLPPP: switch (l2info->cookie_type) { case LS_COOKIE_ID: l2info->bundle = l2info->cookie[1]; break; case AS_COOKIE_ID: /* use EXTRACT_, not GET_ (not packet buffer pointer) */ l2info->bundle = (EXTRACT_BE_U_2(&l2info->cookie[6])>>3)&0xfff; l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK; break; default: l2info->bundle = l2info->cookie[0]; break; } break; #endif #ifdef DLT_JUNIPER_MLFR case DLT_JUNIPER_MLFR: switch (l2info->cookie_type) { case LS_COOKIE_ID: l2info->bundle = l2info->cookie[1]; l2info->proto = GET_BE_U_2(p); l2info->header_len += 2; l2info->length -= 2; l2info->caplen -= 2; break; case AS_COOKIE_ID: /* use EXTRACT_, not GET_ (not packet buffer pointer) */ l2info->bundle = (EXTRACT_BE_U_2(&l2info->cookie[6])>>3)&0xfff; l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK; break; default: l2info->bundle = l2info->cookie[0]; l2info->header_len += 2; l2info->length -= 2; l2info->caplen -= 2; break; } break; #endif #ifdef DLT_JUNIPER_MFR case DLT_JUNIPER_MFR: switch (l2info->cookie_type) { case LS_COOKIE_ID: l2info->bundle = l2info->cookie[1]; l2info->proto = GET_BE_U_2(p); l2info->header_len += 2; l2info->length -= 2; l2info->caplen -= 2; break; case AS_COOKIE_ID: /* use EXTRACT_, not GET_ (not packet buffer pointer) */ l2info->bundle = (EXTRACT_BE_U_2(&l2info->cookie[6])>>3)&0xfff; l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK; break; default: l2info->bundle = l2info->cookie[0]; break; } break; #endif #ifdef DLT_JUNIPER_ATM2 case DLT_JUNIPER_ATM2: ND_TCHECK_4(p); /* ATM cell relay control word present ? */ if (l2info->cookie[7] & ATM2_PKT_TYPE_MASK) { control_word = GET_BE_U_4(p); /* some control word heuristics */ switch(control_word) { case 0: /* zero control word */ case 0x08000000: /* < JUNOS 7.4 control-word */ case 0x08380000: /* cntl word plus cell length (56) >= JUNOS 7.4*/ l2info->header_len += 4; break; default: break; } if (ndo->ndo_eflag) ND_PRINT("control-word 0x%08x ", control_word); } break; #endif #ifdef DLT_JUNIPER_ES case DLT_JUNIPER_ES: break; #endif #ifdef DLT_JUNIPER_GGSN case DLT_JUNIPER_GGSN: break; #endif #ifdef DLT_JUNIPER_SERVICES case DLT_JUNIPER_SERVICES: break; #endif #ifdef DLT_JUNIPER_ATM1 case DLT_JUNIPER_ATM1: break; #endif #ifdef DLT_JUNIPER_PPP case DLT_JUNIPER_PPP: break; #endif #ifdef DLT_JUNIPER_CHDLC case DLT_JUNIPER_CHDLC: break; #endif #ifdef DLT_JUNIPER_ETHER case DLT_JUNIPER_ETHER: break; #endif #ifdef DLT_JUNIPER_FRELAY case DLT_JUNIPER_FRELAY: break; #endif #ifdef DLT_JUNIPER_MONITOR case DLT_JUNIPER_MONITOR: break; #endif #ifdef DLT_JUNIPER_PPPOE case DLT_JUNIPER_PPPOE: break; #endif #ifdef DLT_JUNIPER_PPPOE_ATM case DLT_JUNIPER_PPPOE_ATM: break; #endif default: ND_PRINT("Unknown Juniper DLT_ type %u: ", l2info->pictype); break; } if (ndo->ndo_eflag) ND_PRINT("hlen %u, proto 0x%04x, ", l2info->header_len, l2info->proto); return 1; /* everything went ok so far. continue parsing */ invalid: nd_print_invalid(ndo); return 0; } #endif /* defined(DLT_JUNIPER_GGSN) || defined(DLT_JUNIPER_ES) || \ defined(DLT_JUNIPER_MONITOR) || defined(DLT_JUNIPER_SERVICES) || \ defined(DLT_JUNIPER_PPPOE) || defined(DLT_JUNIPER_ETHER) || \ defined(DLT_JUNIPER_PPP) || defined(DLT_JUNIPER_FRELAY) || \ defined(DLT_JUNIPER_CHDLC) || defined(DLT_JUNIPER_PPPOE_ATM) || \ defined(DLT_JUNIPER_MLPPP) || defined(DLT_JUNIPER_MFR) || \ defined(DLT_JUNIPER_MLFR) || defined(DLT_JUNIPER_ATM1) || \ defined(DLT_JUNIPER_ATM2) */