1 /* NetBSD: print-juniper.c,v 1.2 2007/07/24 11:53:45 drochner Exp */ 2 3 /* 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that: (1) source code 6 * distributions retain the above copyright notice and this paragraph 7 * in its entirety, and (2) distributions including binary code include 8 * the above copyright notice and this paragraph in its entirety in 9 * the documentation or other materials provided with the distribution. 10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND 11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT 12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 13 * FOR A PARTICULAR PURPOSE. 14 * 15 * Original code by Hannes Gredler (hannes (at) juniper.net) 16 */ 17 18 #ifndef lint 19 static const char rcsid[] _U_ = 20 "@(#) $Header: /tcpdump/master/tcpdump/print-juniper.c,v 1.34 2007-08-29 02:31:44 mcr Exp $ (LBL)"; 21 #else 22 __RCSID("NetBSD: print-juniper.c,v 1.3 2007/07/25 06:31:32 dogcow Exp "); 23 #endif 24 25 #ifdef HAVE_CONFIG_H 26 #include "config.h" 27 #endif 28 29 #include <tcpdump-stdinc.h> 30 31 #include <pcap.h> 32 #include <stdio.h> 33 34 #include "interface.h" 35 #include "addrtoname.h" 36 #include "extract.h" 37 #include "ppp.h" 38 #include "llc.h" 39 #include "nlpid.h" 40 #include "ethertype.h" 41 #include "atm.h" 42 43 #define JUNIPER_BPF_OUT 0 /* Outgoing packet */ 44 #define JUNIPER_BPF_IN 1 /* Incoming packet */ 45 #define JUNIPER_BPF_PKT_IN 0x1 /* Incoming packet */ 46 #define JUNIPER_BPF_NO_L2 0x2 /* L2 header stripped */ 47 #define JUNIPER_BPF_IIF 0x4 /* IIF is valid */ 48 #define JUNIPER_BPF_FILTER 0x40 /* BPF filtering is supported */ 49 #define JUNIPER_BPF_EXT 0x80 /* extensions present */ 50 #define JUNIPER_MGC_NUMBER 0x4d4743 /* = "MGC" */ 51 52 #define JUNIPER_LSQ_COOKIE_RE (1 << 3) 53 #define JUNIPER_LSQ_COOKIE_DIR (1 << 2) 54 #define JUNIPER_LSQ_L3_PROTO_SHIFT 4 55 #define JUNIPER_LSQ_L3_PROTO_MASK (0x17 << JUNIPER_LSQ_L3_PROTO_SHIFT) 56 #define JUNIPER_LSQ_L3_PROTO_IPV4 (0 << JUNIPER_LSQ_L3_PROTO_SHIFT) 57 #define JUNIPER_LSQ_L3_PROTO_IPV6 (1 << JUNIPER_LSQ_L3_PROTO_SHIFT) 58 #define JUNIPER_LSQ_L3_PROTO_MPLS (2 << JUNIPER_LSQ_L3_PROTO_SHIFT) 59 #define JUNIPER_LSQ_L3_PROTO_ISO (3 << JUNIPER_LSQ_L3_PROTO_SHIFT) 60 #define AS_PIC_COOKIE_LEN 8 61 62 #define JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE 1 63 #define JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE 2 64 #define JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE 3 65 #define JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE 4 66 #define JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE 5 67 68 static const struct tok juniper_ipsec_type_values[] = { 69 { JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE, "ESP ENCR-AUTH" }, 70 { JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE, "ESP ENCR-AH AUTH" }, 71 { JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE, "ESP AUTH" }, 72 { JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE, "AH AUTH" }, 73 { JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE, "ESP ENCR" }, 74 { 0, NULL} 75 }; 76 77 static const struct tok juniper_direction_values[] = { 78 { JUNIPER_BPF_IN, "In"}, 79 { JUNIPER_BPF_OUT, "Out"}, 80 { 0, NULL} 81 }; 82 83 /* codepoints for encoding extensions to a .pcap file */ 84 enum { 85 JUNIPER_EXT_TLV_IFD_IDX = 1, 86 JUNIPER_EXT_TLV_IFD_NAME = 2, 87 JUNIPER_EXT_TLV_IFD_MEDIATYPE = 3, 88 JUNIPER_EXT_TLV_IFL_IDX = 4, 89 JUNIPER_EXT_TLV_IFL_UNIT = 5, 90 JUNIPER_EXT_TLV_IFL_ENCAPS = 6, 91 JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE = 7, 92 JUNIPER_EXT_TLV_TTP_IFL_ENCAPS = 8 93 }; 94 95 /* 1 byte type and 1-byte length */ 96 #define JUNIPER_EXT_TLV_OVERHEAD 2 97 98 static const struct tok jnx_ext_tlv_values[] = { 99 { JUNIPER_EXT_TLV_IFD_IDX, "Device Interface Index" }, 100 { JUNIPER_EXT_TLV_IFD_NAME,"Device Interface Name" }, 101 { JUNIPER_EXT_TLV_IFD_MEDIATYPE, "Device Media Type" }, 102 { JUNIPER_EXT_TLV_IFL_IDX, "Logical Interface Index" }, 103 { JUNIPER_EXT_TLV_IFL_UNIT,"Logical Unit Number" }, 104 { JUNIPER_EXT_TLV_IFL_ENCAPS, "Logical Interface Encapsulation" }, 105 { JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE, "TTP derived Device Media Type" }, 106 { JUNIPER_EXT_TLV_TTP_IFL_ENCAPS, "TTP derived Logical Interface Encapsulation" }, 107 { 0, NULL } 108 }; 109 110 static const struct tok jnx_flag_values[] = { 111 { JUNIPER_BPF_EXT, "Ext" }, 112 { JUNIPER_BPF_FILTER, "Filter" }, 113 { JUNIPER_BPF_IIF, "IIF" }, 114 { JUNIPER_BPF_NO_L2, "no-L2" }, 115 { JUNIPER_BPF_PKT_IN, "In" }, 116 { 0, NULL } 117 }; 118 119 #define JUNIPER_IFML_ETHER 1 120 #define JUNIPER_IFML_FDDI 2 121 #define JUNIPER_IFML_TOKENRING 3 122 #define JUNIPER_IFML_PPP 4 123 #define JUNIPER_IFML_FRAMERELAY 5 124 #define JUNIPER_IFML_CISCOHDLC 6 125 #define JUNIPER_IFML_SMDSDXI 7 126 #define JUNIPER_IFML_ATMPVC 8 127 #define JUNIPER_IFML_PPP_CCC 9 128 #define JUNIPER_IFML_FRAMERELAY_CCC 10 129 #define JUNIPER_IFML_IPIP 11 130 #define JUNIPER_IFML_GRE 12 131 #define JUNIPER_IFML_PIM 13 132 #define JUNIPER_IFML_PIMD 14 133 #define JUNIPER_IFML_CISCOHDLC_CCC 15 134 #define JUNIPER_IFML_VLAN_CCC 16 135 #define JUNIPER_IFML_MLPPP 17 136 #define JUNIPER_IFML_MLFR 18 137 #define JUNIPER_IFML_ML 19 138 #define JUNIPER_IFML_LSI 20 139 #define JUNIPER_IFML_DFE 21 140 #define JUNIPER_IFML_ATM_CELLRELAY_CCC 22 141 #define JUNIPER_IFML_CRYPTO 23 142 #define JUNIPER_IFML_GGSN 24 143 #define JUNIPER_IFML_LSI_PPP 25 144 #define JUNIPER_IFML_LSI_CISCOHDLC 26 145 #define JUNIPER_IFML_PPP_TCC 27 146 #define JUNIPER_IFML_FRAMERELAY_TCC 28 147 #define JUNIPER_IFML_CISCOHDLC_TCC 29 148 #define JUNIPER_IFML_ETHERNET_CCC 30 149 #define JUNIPER_IFML_VT 31 150 #define JUNIPER_IFML_EXTENDED_VLAN_CCC 32 151 #define JUNIPER_IFML_ETHER_OVER_ATM 33 152 #define JUNIPER_IFML_MONITOR 34 153 #define JUNIPER_IFML_ETHERNET_TCC 35 154 #define JUNIPER_IFML_VLAN_TCC 36 155 #define JUNIPER_IFML_EXTENDED_VLAN_TCC 37 156 #define JUNIPER_IFML_CONTROLLER 38 157 #define JUNIPER_IFML_MFR 39 158 #define JUNIPER_IFML_LS 40 159 #define JUNIPER_IFML_ETHERNET_VPLS 41 160 #define JUNIPER_IFML_ETHERNET_VLAN_VPLS 42 161 #define JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS 43 162 #define JUNIPER_IFML_LT 44 163 #define JUNIPER_IFML_SERVICES 45 164 #define JUNIPER_IFML_ETHER_VPLS_OVER_ATM 46 165 #define JUNIPER_IFML_FR_PORT_CCC 47 166 #define JUNIPER_IFML_FRAMERELAY_EXT_CCC 48 167 #define JUNIPER_IFML_FRAMERELAY_EXT_TCC 49 168 #define JUNIPER_IFML_FRAMERELAY_FLEX 50 169 #define JUNIPER_IFML_GGSNI 51 170 #define JUNIPER_IFML_ETHERNET_FLEX 52 171 #define JUNIPER_IFML_COLLECTOR 53 172 #define JUNIPER_IFML_AGGREGATOR 54 173 #define JUNIPER_IFML_LAPD 55 174 #define JUNIPER_IFML_PPPOE 56 175 #define JUNIPER_IFML_PPP_SUBORDINATE 57 176 #define JUNIPER_IFML_CISCOHDLC_SUBORDINATE 58 177 #define JUNIPER_IFML_DFC 59 178 #define JUNIPER_IFML_PICPEER 60 179 180 static const struct tok juniper_ifmt_values[] = { 181 { JUNIPER_IFML_ETHER, "Ethernet" }, 182 { JUNIPER_IFML_FDDI, "FDDI" }, 183 { JUNIPER_IFML_TOKENRING, "Token-Ring" }, 184 { JUNIPER_IFML_PPP, "PPP" }, 185 { JUNIPER_IFML_PPP_SUBORDINATE, "PPP-Subordinate" }, 186 { JUNIPER_IFML_FRAMERELAY, "Frame-Relay" }, 187 { JUNIPER_IFML_CISCOHDLC, "Cisco-HDLC" }, 188 { JUNIPER_IFML_SMDSDXI, "SMDS-DXI" }, 189 { JUNIPER_IFML_ATMPVC, "ATM-PVC" }, 190 { JUNIPER_IFML_PPP_CCC, "PPP-CCC" }, 191 { JUNIPER_IFML_FRAMERELAY_CCC, "Frame-Relay-CCC" }, 192 { JUNIPER_IFML_FRAMERELAY_EXT_CCC, "Extended FR-CCC" }, 193 { JUNIPER_IFML_IPIP, "IP-over-IP" }, 194 { JUNIPER_IFML_GRE, "GRE" }, 195 { JUNIPER_IFML_PIM, "PIM-Encapsulator" }, 196 { JUNIPER_IFML_PIMD, "PIM-Decapsulator" }, 197 { JUNIPER_IFML_CISCOHDLC_CCC, "Cisco-HDLC-CCC" }, 198 { JUNIPER_IFML_VLAN_CCC, "VLAN-CCC" }, 199 { JUNIPER_IFML_EXTENDED_VLAN_CCC, "Extended-VLAN-CCC" }, 200 { JUNIPER_IFML_MLPPP, "Multilink-PPP" }, 201 { JUNIPER_IFML_MLFR, "Multilink-FR" }, 202 { JUNIPER_IFML_MFR, "Multilink-FR-UNI-NNI" }, 203 { JUNIPER_IFML_ML, "Multilink" }, 204 { JUNIPER_IFML_LS, "LinkService" }, 205 { JUNIPER_IFML_LSI, "LSI" }, 206 { JUNIPER_IFML_ATM_CELLRELAY_CCC, "ATM-CCC-Cell-Relay" }, 207 { JUNIPER_IFML_CRYPTO, "IPSEC-over-IP" }, 208 { JUNIPER_IFML_GGSN, "GGSN" }, 209 { JUNIPER_IFML_PPP_TCC, "PPP-TCC" }, 210 { JUNIPER_IFML_FRAMERELAY_TCC, "Frame-Relay-TCC" }, 211 { JUNIPER_IFML_FRAMERELAY_EXT_TCC, "Extended FR-TCC" }, 212 { JUNIPER_IFML_CISCOHDLC_TCC, "Cisco-HDLC-TCC" }, 213 { JUNIPER_IFML_ETHERNET_CCC, "Ethernet-CCC" }, 214 { JUNIPER_IFML_VT, "VPN-Loopback-tunnel" }, 215 { JUNIPER_IFML_ETHER_OVER_ATM, "Ethernet-over-ATM" }, 216 { JUNIPER_IFML_ETHER_VPLS_OVER_ATM, "Ethernet-VPLS-over-ATM" }, 217 { JUNIPER_IFML_MONITOR, "Monitor" }, 218 { JUNIPER_IFML_ETHERNET_TCC, "Ethernet-TCC" }, 219 { JUNIPER_IFML_VLAN_TCC, "VLAN-TCC" }, 220 { JUNIPER_IFML_EXTENDED_VLAN_TCC, "Extended-VLAN-TCC" }, 221 { JUNIPER_IFML_CONTROLLER, "Controller" }, 222 { JUNIPER_IFML_ETHERNET_VPLS, "VPLS" }, 223 { JUNIPER_IFML_ETHERNET_VLAN_VPLS, "VLAN-VPLS" }, 224 { JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS, "Extended-VLAN-VPLS" }, 225 { JUNIPER_IFML_LT, "Logical-tunnel" }, 226 { JUNIPER_IFML_SERVICES, "General-Services" }, 227 { JUNIPER_IFML_PPPOE, "PPPoE" }, 228 { JUNIPER_IFML_ETHERNET_FLEX, "Flexible-Ethernet-Services" }, 229 { JUNIPER_IFML_FRAMERELAY_FLEX, "Flexible-FrameRelay" }, 230 { JUNIPER_IFML_COLLECTOR, "Flow-collection" }, 231 { JUNIPER_IFML_PICPEER, "PIC Peer" }, 232 { JUNIPER_IFML_DFC, "Dynamic-Flow-Capture" }, 233 {0, NULL} 234 }; 235 236 #define JUNIPER_IFLE_ATM_SNAP 2 237 #define JUNIPER_IFLE_ATM_NLPID 3 238 #define JUNIPER_IFLE_ATM_VCMUX 4 239 #define JUNIPER_IFLE_ATM_LLC 5 240 #define JUNIPER_IFLE_ATM_PPP_VCMUX 6 241 #define JUNIPER_IFLE_ATM_PPP_LLC 7 242 #define JUNIPER_IFLE_ATM_PPP_FUNI 8 243 #define JUNIPER_IFLE_ATM_CCC 9 244 #define JUNIPER_IFLE_FR_NLPID 10 245 #define JUNIPER_IFLE_FR_SNAP 11 246 #define JUNIPER_IFLE_FR_PPP 12 247 #define JUNIPER_IFLE_FR_CCC 13 248 #define JUNIPER_IFLE_ENET2 14 249 #define JUNIPER_IFLE_IEEE8023_SNAP 15 250 #define JUNIPER_IFLE_IEEE8023_LLC 16 251 #define JUNIPER_IFLE_PPP 17 252 #define JUNIPER_IFLE_CISCOHDLC 18 253 #define JUNIPER_IFLE_PPP_CCC 19 254 #define JUNIPER_IFLE_IPIP_NULL 20 255 #define JUNIPER_IFLE_PIM_NULL 21 256 #define JUNIPER_IFLE_GRE_NULL 22 257 #define JUNIPER_IFLE_GRE_PPP 23 258 #define JUNIPER_IFLE_PIMD_DECAPS 24 259 #define JUNIPER_IFLE_CISCOHDLC_CCC 25 260 #define JUNIPER_IFLE_ATM_CISCO_NLPID 26 261 #define JUNIPER_IFLE_VLAN_CCC 27 262 #define JUNIPER_IFLE_MLPPP 28 263 #define JUNIPER_IFLE_MLFR 29 264 #define JUNIPER_IFLE_LSI_NULL 30 265 #define JUNIPER_IFLE_AGGREGATE_UNUSED 31 266 #define JUNIPER_IFLE_ATM_CELLRELAY_CCC 32 267 #define JUNIPER_IFLE_CRYPTO 33 268 #define JUNIPER_IFLE_GGSN 34 269 #define JUNIPER_IFLE_ATM_TCC 35 270 #define JUNIPER_IFLE_FR_TCC 36 271 #define JUNIPER_IFLE_PPP_TCC 37 272 #define JUNIPER_IFLE_CISCOHDLC_TCC 38 273 #define JUNIPER_IFLE_ETHERNET_CCC 39 274 #define JUNIPER_IFLE_VT 40 275 #define JUNIPER_IFLE_ATM_EOA_LLC 41 276 #define JUNIPER_IFLE_EXTENDED_VLAN_CCC 42 277 #define JUNIPER_IFLE_ATM_SNAP_TCC 43 278 #define JUNIPER_IFLE_MONITOR 44 279 #define JUNIPER_IFLE_ETHERNET_TCC 45 280 #define JUNIPER_IFLE_VLAN_TCC 46 281 #define JUNIPER_IFLE_EXTENDED_VLAN_TCC 47 282 #define JUNIPER_IFLE_MFR 48 283 #define JUNIPER_IFLE_ETHERNET_VPLS 49 284 #define JUNIPER_IFLE_ETHERNET_VLAN_VPLS 50 285 #define JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS 51 286 #define JUNIPER_IFLE_SERVICES 52 287 #define JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC 53 288 #define JUNIPER_IFLE_FR_PORT_CCC 54 289 #define JUNIPER_IFLE_ATM_MLPPP_LLC 55 290 #define JUNIPER_IFLE_ATM_EOA_CCC 56 291 #define JUNIPER_IFLE_LT_VLAN 57 292 #define JUNIPER_IFLE_COLLECTOR 58 293 #define JUNIPER_IFLE_AGGREGATOR 59 294 #define JUNIPER_IFLE_LAPD 60 295 #define JUNIPER_IFLE_ATM_PPPOE_LLC 61 296 #define JUNIPER_IFLE_ETHERNET_PPPOE 62 297 #define JUNIPER_IFLE_PPPOE 63 298 #define JUNIPER_IFLE_PPP_SUBORDINATE 64 299 #define JUNIPER_IFLE_CISCOHDLC_SUBORDINATE 65 300 #define JUNIPER_IFLE_DFC 66 301 #define JUNIPER_IFLE_PICPEER 67 302 303 static const struct tok juniper_ifle_values[] = { 304 { JUNIPER_IFLE_AGGREGATOR, "Aggregator" }, 305 { JUNIPER_IFLE_ATM_CCC, "CCC over ATM" }, 306 { JUNIPER_IFLE_ATM_CELLRELAY_CCC, "ATM CCC Cell Relay" }, 307 { JUNIPER_IFLE_ATM_CISCO_NLPID, "CISCO compatible NLPID" }, 308 { JUNIPER_IFLE_ATM_EOA_CCC, "Ethernet over ATM CCC" }, 309 { JUNIPER_IFLE_ATM_EOA_LLC, "Ethernet over ATM LLC" }, 310 { JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC, "Ethernet VPLS over ATM LLC" }, 311 { JUNIPER_IFLE_ATM_LLC, "ATM LLC" }, 312 { JUNIPER_IFLE_ATM_MLPPP_LLC, "MLPPP over ATM LLC" }, 313 { JUNIPER_IFLE_ATM_NLPID, "ATM NLPID" }, 314 { JUNIPER_IFLE_ATM_PPPOE_LLC, "PPPoE over ATM LLC" }, 315 { JUNIPER_IFLE_ATM_PPP_FUNI, "PPP over FUNI" }, 316 { JUNIPER_IFLE_ATM_PPP_LLC, "PPP over ATM LLC" }, 317 { JUNIPER_IFLE_ATM_PPP_VCMUX, "PPP over ATM VCMUX" }, 318 { JUNIPER_IFLE_ATM_SNAP, "ATM SNAP" }, 319 { JUNIPER_IFLE_ATM_SNAP_TCC, "ATM SNAP TCC" }, 320 { JUNIPER_IFLE_ATM_TCC, "ATM VCMUX TCC" }, 321 { JUNIPER_IFLE_ATM_VCMUX, "ATM VCMUX" }, 322 { JUNIPER_IFLE_CISCOHDLC, "C-HDLC" }, 323 { JUNIPER_IFLE_CISCOHDLC_CCC, "C-HDLC CCC" }, 324 { JUNIPER_IFLE_CISCOHDLC_SUBORDINATE, "C-HDLC via dialer" }, 325 { JUNIPER_IFLE_CISCOHDLC_TCC, "C-HDLC TCC" }, 326 { JUNIPER_IFLE_COLLECTOR, "Collector" }, 327 { JUNIPER_IFLE_CRYPTO, "Crypto" }, 328 { JUNIPER_IFLE_ENET2, "Ethernet" }, 329 { JUNIPER_IFLE_ETHERNET_CCC, "Ethernet CCC" }, 330 { JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS, "Extended VLAN VPLS" }, 331 { JUNIPER_IFLE_ETHERNET_PPPOE, "PPPoE over Ethernet" }, 332 { JUNIPER_IFLE_ETHERNET_TCC, "Ethernet TCC" }, 333 { JUNIPER_IFLE_ETHERNET_VLAN_VPLS, "VLAN VPLS" }, 334 { JUNIPER_IFLE_ETHERNET_VPLS, "VPLS" }, 335 { JUNIPER_IFLE_EXTENDED_VLAN_CCC, "Extended VLAN CCC" }, 336 { JUNIPER_IFLE_EXTENDED_VLAN_TCC, "Extended VLAN TCC" }, 337 { JUNIPER_IFLE_FR_CCC, "FR CCC" }, 338 { JUNIPER_IFLE_FR_NLPID, "FR NLPID" }, 339 { JUNIPER_IFLE_FR_PORT_CCC, "FR CCC" }, 340 { JUNIPER_IFLE_FR_PPP, "FR PPP" }, 341 { JUNIPER_IFLE_FR_SNAP, "FR SNAP" }, 342 { JUNIPER_IFLE_FR_TCC, "FR TCC" }, 343 { JUNIPER_IFLE_GGSN, "GGSN" }, 344 { JUNIPER_IFLE_GRE_NULL, "GRE NULL" }, 345 { JUNIPER_IFLE_GRE_PPP, "PPP over GRE" }, 346 { JUNIPER_IFLE_IPIP_NULL, "IPIP" }, 347 { JUNIPER_IFLE_LAPD, "LAPD" }, 348 { JUNIPER_IFLE_LSI_NULL, "LSI Null" }, 349 { JUNIPER_IFLE_LT_VLAN, "LT VLAN" }, 350 { JUNIPER_IFLE_MFR, "MFR" }, 351 { JUNIPER_IFLE_MLFR, "MLFR" }, 352 { JUNIPER_IFLE_MLPPP, "MLPPP" }, 353 { JUNIPER_IFLE_MONITOR, "Monitor" }, 354 { JUNIPER_IFLE_PIMD_DECAPS, "PIMd" }, 355 { JUNIPER_IFLE_PIM_NULL, "PIM Null" }, 356 { JUNIPER_IFLE_PPP, "PPP" }, 357 { JUNIPER_IFLE_PPPOE, "PPPoE" }, 358 { JUNIPER_IFLE_PPP_CCC, "PPP CCC" }, 359 { JUNIPER_IFLE_PPP_SUBORDINATE, "" }, 360 { JUNIPER_IFLE_PPP_TCC, "PPP TCC" }, 361 { JUNIPER_IFLE_SERVICES, "General Services" }, 362 { JUNIPER_IFLE_VLAN_CCC, "VLAN CCC" }, 363 { JUNIPER_IFLE_VLAN_TCC, "VLAN TCC" }, 364 { JUNIPER_IFLE_VT, "VT" }, 365 {0, NULL} 366 }; 367 368 struct juniper_cookie_table_t { 369 u_int32_t pictype; /* pic type */ 370 u_int8_t cookie_len; /* cookie len */ 371 const char *s; /* pic name */ 372 }; 373 374 static struct juniper_cookie_table_t juniper_cookie_table[] = { 375 #ifdef DLT_JUNIPER_ATM1 376 { DLT_JUNIPER_ATM1, 4, "ATM1"}, 377 #endif 378 #ifdef DLT_JUNIPER_ATM2 379 { DLT_JUNIPER_ATM2, 8, "ATM2"}, 380 #endif 381 #ifdef DLT_JUNIPER_MLPPP 382 { DLT_JUNIPER_MLPPP, 2, "MLPPP"}, 383 #endif 384 #ifdef DLT_JUNIPER_MLFR 385 { DLT_JUNIPER_MLFR, 2, "MLFR"}, 386 #endif 387 #ifdef DLT_JUNIPER_MFR 388 { DLT_JUNIPER_MFR, 4, "MFR"}, 389 #endif 390 #ifdef DLT_JUNIPER_PPPOE 391 { DLT_JUNIPER_PPPOE, 0, "PPPoE"}, 392 #endif 393 #ifdef DLT_JUNIPER_PPPOE_ATM 394 { DLT_JUNIPER_PPPOE_ATM, 0, "PPPoE ATM"}, 395 #endif 396 #ifdef DLT_JUNIPER_GGSN 397 { DLT_JUNIPER_GGSN, 8, "GGSN"}, 398 #endif 399 #ifdef DLT_JUNIPER_MONITOR 400 { DLT_JUNIPER_MONITOR, 8, "MONITOR"}, 401 #endif 402 #ifdef DLT_JUNIPER_SERVICES 403 { DLT_JUNIPER_SERVICES, 8, "AS"}, 404 #endif 405 #ifdef DLT_JUNIPER_ES 406 { DLT_JUNIPER_ES, 0, "ES"}, 407 #endif 408 { 0, 0, NULL } 409 }; 410 411 struct juniper_l2info_t { 412 u_int32_t length; 413 u_int32_t caplen; 414 u_int32_t pictype; 415 u_int8_t direction; 416 u_int8_t header_len; 417 u_int8_t cookie_len; 418 u_int8_t cookie_type; 419 u_int8_t cookie[8]; 420 u_int8_t bundle; 421 u_int16_t proto; 422 u_int8_t flags; 423 }; 424 425 #define LS_COOKIE_ID 0x54 426 #define AS_COOKIE_ID 0x47 427 #define LS_MLFR_COOKIE_LEN 4 428 #define ML_MLFR_COOKIE_LEN 2 429 #define LS_MFR_COOKIE_LEN 6 430 #define ATM1_COOKIE_LEN 4 431 #define ATM2_COOKIE_LEN 8 432 433 #define ATM2_PKT_TYPE_MASK 0x70 434 #define ATM2_GAP_COUNT_MASK 0x3F 435 436 #define JUNIPER_PROTO_NULL 1 437 #define JUNIPER_PROTO_IPV4 2 438 #define JUNIPER_PROTO_IPV6 6 439 440 #define MFR_BE_MASK 0xc0 441 442 static const struct tok juniper_protocol_values[] = { 443 { JUNIPER_PROTO_NULL, "Null" }, 444 { JUNIPER_PROTO_IPV4, "IPv4" }, 445 { JUNIPER_PROTO_IPV6, "IPv6" }, 446 { 0, NULL} 447 }; 448 449 int ip_heuristic_guess(register const u_char *, u_int); 450 int juniper_ppp_heuristic_guess(register const u_char *, u_int); 451 int juniper_read_tlv_value(const u_char *, u_int, u_int); 452 static int juniper_parse_header (const u_char *, const struct pcap_pkthdr *, struct juniper_l2info_t *); 453 454 #ifdef DLT_JUNIPER_GGSN 455 u_int 456 juniper_ggsn_print(const struct pcap_pkthdr *h, register const u_char *p) 457 { 458 struct juniper_l2info_t l2info; 459 struct juniper_ggsn_header { 460 u_int8_t svc_id; 461 u_int8_t flags_len; 462 u_int8_t proto; 463 u_int8_t flags; 464 u_int8_t vlan_id[2]; 465 u_int8_t res[2]; 466 }; 467 const struct juniper_ggsn_header *gh; 468 469 l2info.pictype = DLT_JUNIPER_GGSN; 470 if(juniper_parse_header(p, h, &l2info) == 0) 471 return l2info.header_len; 472 473 p+=l2info.header_len; 474 gh = (struct juniper_ggsn_header *)&l2info.cookie; 475 476 if (eflag) { 477 printf("proto %s (%u), vlan %u: ", 478 tok2str(juniper_protocol_values,"Unknown",gh->proto), 479 gh->proto, 480 EXTRACT_16BITS(&gh->vlan_id[0])); 481 } 482 483 switch (gh->proto) { 484 case JUNIPER_PROTO_IPV4: 485 ip_print(gndo, p, l2info.length); 486 break; 487 #ifdef INET6 488 case JUNIPER_PROTO_IPV6: 489 ip6_print(gndo, p, l2info.length); 490 break; 491 #endif /* INET6 */ 492 default: 493 if (!eflag) 494 printf("unknown GGSN proto (%u)", gh->proto); 495 } 496 497 return l2info.header_len; 498 } 499 #endif 500 501 #ifdef DLT_JUNIPER_ES 502 u_int 503 juniper_es_print(const struct pcap_pkthdr *h, register const u_char *p) 504 { 505 struct juniper_l2info_t l2info; 506 struct juniper_ipsec_header { 507 u_int8_t sa_index[2]; 508 u_int8_t ttl; 509 u_int8_t type; 510 u_int8_t spi[4]; 511 u_int8_t src_ip[4]; 512 u_int8_t dst_ip[4]; 513 }; 514 u_int rewrite_len,es_type_bundle; 515 const struct juniper_ipsec_header *ih; 516 517 l2info.pictype = DLT_JUNIPER_ES; 518 if(juniper_parse_header(p, h, &l2info) == 0) 519 return l2info.header_len; 520 521 p+=l2info.header_len; 522 ih = (struct juniper_ipsec_header *)p; 523 524 switch (ih->type) { 525 case JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE: 526 case JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE: 527 rewrite_len = 0; 528 es_type_bundle = 1; 529 break; 530 case JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE: 531 case JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE: 532 case JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE: 533 rewrite_len = 16; 534 es_type_bundle = 0; 535 default: 536 printf("ES Invalid type %u, length %u", 537 ih->type, 538 l2info.length); 539 return l2info.header_len; 540 } 541 542 l2info.length-=rewrite_len; 543 p+=rewrite_len; 544 545 if (eflag) { 546 if (!es_type_bundle) { 547 printf("ES SA, index %u, ttl %u type %s (%u), spi %u, Tunnel %s > %s, length %u\n", 548 EXTRACT_16BITS(&ih->sa_index), 549 ih->ttl, 550 tok2str(juniper_ipsec_type_values,"Unknown",ih->type), 551 ih->type, 552 EXTRACT_32BITS(&ih->spi), 553 ipaddr_string(&ih->src_ip), 554 ipaddr_string(&ih->dst_ip), 555 l2info.length); 556 } else { 557 printf("ES SA, index %u, ttl %u type %s (%u), length %u\n", 558 EXTRACT_16BITS(&ih->sa_index), 559 ih->ttl, 560 tok2str(juniper_ipsec_type_values,"Unknown",ih->type), 561 ih->type, 562 l2info.length); 563 } 564 } 565 566 ip_print(gndo, p, l2info.length); 567 return l2info.header_len; 568 } 569 #endif 570 571 #ifdef DLT_JUNIPER_MONITOR 572 u_int 573 juniper_monitor_print(const struct pcap_pkthdr *h, register const u_char *p) 574 { 575 struct juniper_l2info_t l2info; 576 struct juniper_monitor_header { 577 u_int8_t pkt_type; 578 u_int8_t padding; 579 u_int8_t iif[2]; 580 u_int8_t service_id[4]; 581 }; 582 const struct juniper_monitor_header *mh; 583 584 l2info.pictype = DLT_JUNIPER_MONITOR; 585 if(juniper_parse_header(p, h, &l2info) == 0) 586 return l2info.header_len; 587 588 p+=l2info.header_len; 589 mh = (struct juniper_monitor_header *)p; 590 591 if (eflag) 592 printf("service-id %u, iif %u, pkt-type %u: ", 593 EXTRACT_32BITS(&mh->service_id), 594 EXTRACT_16BITS(&mh->iif), 595 mh->pkt_type); 596 597 /* no proto field - lets guess by first byte of IP header*/ 598 ip_heuristic_guess(p, l2info.length); 599 600 return l2info.header_len; 601 } 602 #endif 603 604 #ifdef DLT_JUNIPER_SERVICES 605 u_int 606 juniper_services_print(const struct pcap_pkthdr *h, register const u_char *p) 607 { 608 struct juniper_l2info_t l2info; 609 struct juniper_services_header { 610 u_int8_t svc_id; 611 u_int8_t flags_len; 612 u_int8_t svc_set_id[2]; 613 u_int8_t dir_iif[4]; 614 }; 615 const struct juniper_services_header *sh; 616 617 l2info.pictype = DLT_JUNIPER_SERVICES; 618 if(juniper_parse_header(p, h, &l2info) == 0) 619 return l2info.header_len; 620 621 p+=l2info.header_len; 622 sh = (struct juniper_services_header *)p; 623 624 if (eflag) 625 printf("service-id %u flags 0x%02x service-set-id 0x%04x iif %u: ", 626 sh->svc_id, 627 sh->flags_len, 628 EXTRACT_16BITS(&sh->svc_set_id), 629 EXTRACT_24BITS(&sh->dir_iif[1])); 630 631 /* no proto field - lets guess by first byte of IP header*/ 632 ip_heuristic_guess(p, l2info.length); 633 634 return l2info.header_len; 635 } 636 #endif 637 638 #ifdef DLT_JUNIPER_PPPOE 639 u_int 640 juniper_pppoe_print(const struct pcap_pkthdr *h, register const u_char *p) 641 { 642 struct juniper_l2info_t l2info; 643 644 l2info.pictype = DLT_JUNIPER_PPPOE; 645 if(juniper_parse_header(p, h, &l2info) == 0) 646 return l2info.header_len; 647 648 p+=l2info.header_len; 649 /* this DLT contains nothing but raw ethernet frames */ 650 ether_print(gndo, p, l2info.length, l2info.caplen, NULL, NULL); 651 return l2info.header_len; 652 } 653 #endif 654 655 #ifdef DLT_JUNIPER_ETHER 656 u_int 657 juniper_ether_print(const struct pcap_pkthdr *h, register const u_char *p) 658 { 659 struct juniper_l2info_t l2info; 660 661 l2info.pictype = DLT_JUNIPER_ETHER; 662 if(juniper_parse_header(p, h, &l2info) == 0) 663 return l2info.header_len; 664 665 p+=l2info.header_len; 666 /* this DLT contains nothing but raw Ethernet frames */ 667 ether_print(gndo, p, l2info.length, l2info.caplen, NULL, NULL); 668 return l2info.header_len; 669 } 670 #endif 671 672 #ifdef DLT_JUNIPER_PPP 673 u_int 674 juniper_ppp_print(const struct pcap_pkthdr *h, register const u_char *p) 675 { 676 struct juniper_l2info_t l2info; 677 678 l2info.pictype = DLT_JUNIPER_PPP; 679 if(juniper_parse_header(p, h, &l2info) == 0) 680 return l2info.header_len; 681 682 p+=l2info.header_len; 683 /* this DLT contains nothing but raw ppp frames */ 684 ppp_print(p, l2info.length); 685 return l2info.header_len; 686 } 687 #endif 688 689 #ifdef DLT_JUNIPER_FRELAY 690 u_int 691 juniper_frelay_print(const struct pcap_pkthdr *h, register const u_char *p) 692 { 693 struct juniper_l2info_t l2info; 694 695 l2info.pictype = DLT_JUNIPER_FRELAY; 696 if(juniper_parse_header(p, h, &l2info) == 0) 697 return l2info.header_len; 698 699 p+=l2info.header_len; 700 /* this DLT contains nothing but raw frame-relay frames */ 701 fr_print(p, l2info.length); 702 return l2info.header_len; 703 } 704 #endif 705 706 #ifdef DLT_JUNIPER_CHDLC 707 u_int 708 juniper_chdlc_print(const struct pcap_pkthdr *h, register const u_char *p) 709 { 710 struct juniper_l2info_t l2info; 711 712 l2info.pictype = DLT_JUNIPER_CHDLC; 713 if(juniper_parse_header(p, h, &l2info) == 0) 714 return l2info.header_len; 715 716 p+=l2info.header_len; 717 /* this DLT contains nothing but raw c-hdlc frames */ 718 chdlc_print(p, l2info.length); 719 return l2info.header_len; 720 } 721 #endif 722 723 #ifdef DLT_JUNIPER_PPPOE_ATM 724 u_int 725 juniper_pppoe_atm_print(const struct pcap_pkthdr *h, register const u_char *p) 726 { 727 struct juniper_l2info_t l2info; 728 u_int16_t extracted_ethertype; 729 730 l2info.pictype = DLT_JUNIPER_PPPOE_ATM; 731 if(juniper_parse_header(p, h, &l2info) == 0) 732 return l2info.header_len; 733 734 p+=l2info.header_len; 735 736 extracted_ethertype = EXTRACT_16BITS(p); 737 /* this DLT contains nothing but raw PPPoE frames, 738 * prepended with a type field*/ 739 if (ethertype_print(gndo, extracted_ethertype, 740 p+ETHERTYPE_LEN, 741 l2info.length-ETHERTYPE_LEN, 742 l2info.caplen-ETHERTYPE_LEN) == 0) 743 /* ether_type not known, probably it wasn't one */ 744 printf("unknown ethertype 0x%04x", extracted_ethertype); 745 746 return l2info.header_len; 747 } 748 #endif 749 750 #ifdef DLT_JUNIPER_MLPPP 751 u_int 752 juniper_mlppp_print(const struct pcap_pkthdr *h, register const u_char *p) 753 { 754 struct juniper_l2info_t l2info; 755 756 l2info.pictype = DLT_JUNIPER_MLPPP; 757 if(juniper_parse_header(p, h, &l2info) == 0) 758 return l2info.header_len; 759 760 /* suppress Bundle-ID if frame was captured on a child-link 761 * best indicator if the cookie looks like a proto */ 762 if (eflag && 763 EXTRACT_16BITS(&l2info.cookie) != PPP_OSI && 764 EXTRACT_16BITS(&l2info.cookie) != (PPP_ADDRESS << 8 | PPP_CONTROL)) 765 printf("Bundle-ID %u: ",l2info.bundle); 766 767 p+=l2info.header_len; 768 769 /* first try the LSQ protos */ 770 switch(l2info.proto) { 771 case JUNIPER_LSQ_L3_PROTO_IPV4: 772 /* IP traffic going to the RE would not have a cookie 773 * -> this must be incoming IS-IS over PPP 774 */ 775 if (l2info.cookie[4] == (JUNIPER_LSQ_COOKIE_RE|JUNIPER_LSQ_COOKIE_DIR)) 776 ppp_print(p, l2info.length); 777 else 778 ip_print(gndo, p, l2info.length); 779 return l2info.header_len; 780 #ifdef INET6 781 case JUNIPER_LSQ_L3_PROTO_IPV6: 782 ip6_print(gndo, p,l2info.length); 783 return l2info.header_len; 784 #endif 785 case JUNIPER_LSQ_L3_PROTO_MPLS: 786 mpls_print(p,l2info.length); 787 return l2info.header_len; 788 case JUNIPER_LSQ_L3_PROTO_ISO: 789 isoclns_print(p,l2info.length,l2info.caplen); 790 return l2info.header_len; 791 default: 792 break; 793 } 794 795 /* zero length cookie ? */ 796 switch (EXTRACT_16BITS(&l2info.cookie)) { 797 case PPP_OSI: 798 ppp_print(p-2,l2info.length+2); 799 break; 800 case (PPP_ADDRESS << 8 | PPP_CONTROL): /* fall through */ 801 default: 802 ppp_print(p,l2info.length); 803 break; 804 } 805 806 return l2info.header_len; 807 } 808 #endif 809 810 811 #ifdef DLT_JUNIPER_MFR 812 u_int 813 juniper_mfr_print(const struct pcap_pkthdr *h, register const u_char *p) 814 { 815 struct juniper_l2info_t l2info; 816 817 l2info.pictype = DLT_JUNIPER_MFR; 818 if(juniper_parse_header(p, h, &l2info) == 0) 819 return l2info.header_len; 820 821 p+=l2info.header_len; 822 823 /* child-link ? */ 824 if (l2info.cookie_len == 0) { 825 mfr_print(p,l2info.length); 826 return l2info.header_len; 827 } 828 829 /* first try the LSQ protos */ 830 if (l2info.cookie_len == AS_PIC_COOKIE_LEN) { 831 switch(l2info.proto) { 832 case JUNIPER_LSQ_L3_PROTO_IPV4: 833 ip_print(gndo, p, l2info.length); 834 return l2info.header_len; 835 #ifdef INET6 836 case JUNIPER_LSQ_L3_PROTO_IPV6: 837 ip6_print(gndo, p,l2info.length); 838 return l2info.header_len; 839 #endif 840 case JUNIPER_LSQ_L3_PROTO_MPLS: 841 mpls_print(p,l2info.length); 842 return l2info.header_len; 843 case JUNIPER_LSQ_L3_PROTO_ISO: 844 isoclns_print(p,l2info.length,l2info.caplen); 845 return l2info.header_len; 846 default: 847 break; 848 } 849 return l2info.header_len; 850 } 851 852 /* suppress Bundle-ID if frame was captured on a child-link */ 853 if (eflag && EXTRACT_32BITS(l2info.cookie) != 1) printf("Bundle-ID %u, ",l2info.bundle); 854 switch (l2info.proto) { 855 case (LLCSAP_ISONS<<8 | LLCSAP_ISONS): 856 isoclns_print(p+1, l2info.length-1, l2info.caplen-1); 857 break; 858 case (LLC_UI<<8 | NLPID_Q933): 859 case (LLC_UI<<8 | NLPID_IP): 860 case (LLC_UI<<8 | NLPID_IP6): 861 /* pass IP{4,6} to the OSI layer for proper link-layer printing */ 862 isoclns_print(p-1, l2info.length+1, l2info.caplen+1); 863 break; 864 default: 865 printf("unknown protocol 0x%04x, length %u",l2info.proto, l2info.length); 866 } 867 868 return l2info.header_len; 869 } 870 #endif 871 872 #ifdef DLT_JUNIPER_MLFR 873 u_int 874 juniper_mlfr_print(const struct pcap_pkthdr *h, register const u_char *p) 875 { 876 struct juniper_l2info_t l2info; 877 878 l2info.pictype = DLT_JUNIPER_MLFR; 879 if(juniper_parse_header(p, h, &l2info) == 0) 880 return l2info.header_len; 881 882 p+=l2info.header_len; 883 884 /* suppress Bundle-ID if frame was captured on a child-link */ 885 if (eflag && EXTRACT_32BITS(l2info.cookie) != 1) printf("Bundle-ID %u, ",l2info.bundle); 886 switch (l2info.proto) { 887 case (LLC_UI): 888 case (LLC_UI<<8): 889 isoclns_print(p, l2info.length, l2info.caplen); 890 break; 891 case (LLC_UI<<8 | NLPID_Q933): 892 case (LLC_UI<<8 | NLPID_IP): 893 case (LLC_UI<<8 | NLPID_IP6): 894 /* pass IP{4,6} to the OSI layer for proper link-layer printing */ 895 isoclns_print(p-1, l2info.length+1, l2info.caplen+1); 896 break; 897 default: 898 printf("unknown protocol 0x%04x, length %u",l2info.proto, l2info.length); 899 } 900 901 return l2info.header_len; 902 } 903 #endif 904 905 /* 906 * ATM1 PIC cookie format 907 * 908 * +-----+-------------------------+-------------------------------+ 909 * |fmtid| vc index | channel ID | 910 * +-----+-------------------------+-------------------------------+ 911 */ 912 913 #ifdef DLT_JUNIPER_ATM1 914 u_int 915 juniper_atm1_print(const struct pcap_pkthdr *h, register const u_char *p) 916 { 917 u_int16_t extracted_ethertype; 918 919 struct juniper_l2info_t l2info; 920 921 l2info.pictype = DLT_JUNIPER_ATM1; 922 if(juniper_parse_header(p, h, &l2info) == 0) 923 return l2info.header_len; 924 925 p+=l2info.header_len; 926 927 if (l2info.cookie[0] == 0x80) { /* OAM cell ? */ 928 oam_print(p,l2info.length,ATM_OAM_NOHEC); 929 return l2info.header_len; 930 } 931 932 if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */ 933 EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */ 934 935 if (llc_print(p, l2info.length, l2info.caplen, NULL, NULL, 936 &extracted_ethertype) != 0) 937 return l2info.header_len; 938 } 939 940 if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */ 941 isoclns_print(p + 1, l2info.length - 1, l2info.caplen - 1); 942 /* FIXME check if frame was recognized */ 943 return l2info.header_len; 944 } 945 946 if(ip_heuristic_guess(p, l2info.length) != 0) /* last try - vcmux encaps ? */ 947 return l2info.header_len; 948 949 return l2info.header_len; 950 } 951 #endif 952 953 /* 954 * ATM2 PIC cookie format 955 * 956 * +-------------------------------+---------+---+-----+-----------+ 957 * | channel ID | reserv |AAL| CCRQ| gap cnt | 958 * +-------------------------------+---------+---+-----+-----------+ 959 */ 960 961 #ifdef DLT_JUNIPER_ATM2 962 u_int 963 juniper_atm2_print(const struct pcap_pkthdr *h, register const u_char *p) 964 { 965 u_int16_t extracted_ethertype; 966 967 struct juniper_l2info_t l2info; 968 969 l2info.pictype = DLT_JUNIPER_ATM2; 970 if(juniper_parse_header(p, h, &l2info) == 0) 971 return l2info.header_len; 972 973 p+=l2info.header_len; 974 975 if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { /* OAM cell ? */ 976 oam_print(p,l2info.length,ATM_OAM_NOHEC); 977 return l2info.header_len; 978 } 979 980 if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */ 981 EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */ 982 983 if (llc_print(p, l2info.length, l2info.caplen, NULL, NULL, 984 &extracted_ethertype) != 0) 985 return l2info.header_len; 986 } 987 988 if (l2info.direction != JUNIPER_BPF_PKT_IN && /* ether-over-1483 encaps ? */ 989 (EXTRACT_32BITS(l2info.cookie) & ATM2_GAP_COUNT_MASK)) { 990 ether_print(gndo, p, l2info.length, l2info.caplen, NULL, NULL); 991 return l2info.header_len; 992 } 993 994 if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */ 995 isoclns_print(p + 1, l2info.length - 1, l2info.caplen - 1); 996 /* FIXME check if frame was recognized */ 997 return l2info.header_len; 998 } 999 1000 if(juniper_ppp_heuristic_guess(p, l2info.length) != 0) /* PPPoA vcmux encaps ? */ 1001 return l2info.header_len; 1002 1003 if(ip_heuristic_guess(p, l2info.length) != 0) /* last try - vcmux encaps ? */ 1004 return l2info.header_len; 1005 1006 return l2info.header_len; 1007 } 1008 #endif 1009 1010 1011 /* try to guess, based on all PPP protos that are supported in 1012 * a juniper router if the payload data is encapsulated using PPP */ 1013 int 1014 juniper_ppp_heuristic_guess(register const u_char *p, u_int length) { 1015 1016 switch(EXTRACT_16BITS(p)) { 1017 case PPP_IP : 1018 case PPP_OSI : 1019 case PPP_MPLS_UCAST : 1020 case PPP_MPLS_MCAST : 1021 case PPP_IPCP : 1022 case PPP_OSICP : 1023 case PPP_MPLSCP : 1024 case PPP_LCP : 1025 case PPP_PAP : 1026 case PPP_CHAP : 1027 case PPP_ML : 1028 #ifdef INET6 1029 case PPP_IPV6 : 1030 case PPP_IPV6CP : 1031 #endif 1032 ppp_print(p, length); 1033 break; 1034 1035 default: 1036 return 0; /* did not find a ppp header */ 1037 break; 1038 } 1039 return 1; /* we printed a ppp packet */ 1040 } 1041 1042 int 1043 ip_heuristic_guess(register const u_char *p, u_int length) { 1044 1045 switch(p[0]) { 1046 case 0x45: 1047 case 0x46: 1048 case 0x47: 1049 case 0x48: 1050 case 0x49: 1051 case 0x4a: 1052 case 0x4b: 1053 case 0x4c: 1054 case 0x4d: 1055 case 0x4e: 1056 case 0x4f: 1057 ip_print(gndo, p, length); 1058 break; 1059 #ifdef INET6 1060 case 0x60: 1061 case 0x61: 1062 case 0x62: 1063 case 0x63: 1064 case 0x64: 1065 case 0x65: 1066 case 0x66: 1067 case 0x67: 1068 case 0x68: 1069 case 0x69: 1070 case 0x6a: 1071 case 0x6b: 1072 case 0x6c: 1073 case 0x6d: 1074 case 0x6e: 1075 case 0x6f: 1076 ip6_print(gndo, p, length); 1077 break; 1078 #endif 1079 default: 1080 return 0; /* did not find a ip header */ 1081 break; 1082 } 1083 return 1; /* we printed an v4/v6 packet */ 1084 } 1085 1086 int 1087 juniper_read_tlv_value(const u_char *p, u_int tlv_type, u_int tlv_len) { 1088 1089 int tlv_value; 1090 1091 /* TLVs < 128 are little endian encoded */ 1092 if (tlv_type < 128) { 1093 switch (tlv_len) { 1094 case 1: 1095 tlv_value = *p; 1096 break; 1097 case 2: 1098 tlv_value = EXTRACT_LE_16BITS(p); 1099 break; 1100 case 3: 1101 tlv_value = EXTRACT_LE_24BITS(p); 1102 break; 1103 case 4: 1104 tlv_value = EXTRACT_LE_32BITS(p); 1105 break; 1106 default: 1107 tlv_value = -1; 1108 break; 1109 } 1110 } else { 1111 /* TLVs >= 128 are big endian encoded */ 1112 switch (tlv_len) { 1113 case 1: 1114 tlv_value = *p; 1115 break; 1116 case 2: 1117 tlv_value = EXTRACT_16BITS(p); 1118 break; 1119 case 3: 1120 tlv_value = EXTRACT_24BITS(p); 1121 break; 1122 case 4: 1123 tlv_value = EXTRACT_32BITS(p); 1124 break; 1125 default: 1126 tlv_value = -1; 1127 break; 1128 } 1129 } 1130 return tlv_value; 1131 } 1132 1133 static int 1134 juniper_parse_header (const u_char *p, const struct pcap_pkthdr *h, struct juniper_l2info_t *l2info) { 1135 1136 struct juniper_cookie_table_t *lp = juniper_cookie_table; 1137 u_int idx, jnx_ext_len, jnx_header_len = 0; 1138 u_int8_t tlv_type,tlv_len; 1139 u_int32_t control_word; 1140 int tlv_value; 1141 const u_char *tptr; 1142 1143 1144 l2info->header_len = 0; 1145 l2info->cookie_len = 0; 1146 l2info->proto = 0; 1147 1148 1149 l2info->length = h->len; 1150 l2info->caplen = h->caplen; 1151 TCHECK2(p[0],4); 1152 l2info->flags = p[3]; 1153 l2info->direction = p[3]&JUNIPER_BPF_PKT_IN; 1154 1155 if (EXTRACT_24BITS(p) != JUNIPER_MGC_NUMBER) { /* magic number found ? */ 1156 printf("no magic-number found!"); 1157 return 0; 1158 } 1159 1160 if (eflag) /* print direction */ 1161 printf("%3s ",tok2str(juniper_direction_values,"---",l2info->direction)); 1162 1163 /* magic number + flags */ 1164 jnx_header_len = 4; 1165 1166 if (vflag>1) 1167 printf("\n\tJuniper PCAP Flags [%s]", 1168 bittok2str(jnx_flag_values, "none", l2info->flags)); 1169 1170 /* extensions present ? - calculate how much bytes to skip */ 1171 if ((l2info->flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) { 1172 1173 tptr = p+jnx_header_len; 1174 1175 /* ok to read extension length ? */ 1176 TCHECK2(tptr[0], 2); 1177 jnx_ext_len = EXTRACT_16BITS(tptr); 1178 jnx_header_len += 2; 1179 tptr +=2; 1180 1181 /* nail up the total length - 1182 * just in case something goes wrong 1183 * with TLV parsing */ 1184 jnx_header_len += jnx_ext_len; 1185 1186 if (vflag>1) 1187 printf(", PCAP Extension(s) total length %u", 1188 jnx_ext_len); 1189 1190 TCHECK2(tptr[0], jnx_ext_len); 1191 while (jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD) { 1192 tlv_type = *(tptr++); 1193 tlv_len = *(tptr++); 1194 tlv_value = 0; 1195 1196 /* sanity check */ 1197 if (tlv_type == 0 || tlv_len == 0) 1198 break; 1199 1200 if (vflag>1) 1201 printf("\n\t %s Extension TLV #%u, length %u, value ", 1202 tok2str(jnx_ext_tlv_values,"Unknown",tlv_type), 1203 tlv_type, 1204 tlv_len); 1205 1206 tlv_value = juniper_read_tlv_value(tptr, tlv_type, tlv_len); 1207 switch (tlv_type) { 1208 case JUNIPER_EXT_TLV_IFD_NAME: 1209 /* FIXME */ 1210 break; 1211 case JUNIPER_EXT_TLV_IFD_MEDIATYPE: 1212 case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE: 1213 if (tlv_value != -1) { 1214 if (vflag>1) 1215 printf("%s (%u)", 1216 tok2str(juniper_ifmt_values, "Unknown", tlv_value), 1217 tlv_value); 1218 } 1219 break; 1220 case JUNIPER_EXT_TLV_IFL_ENCAPS: 1221 case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS: 1222 if (tlv_value != -1) { 1223 if (vflag>1) 1224 printf("%s (%u)", 1225 tok2str(juniper_ifle_values, "Unknown", tlv_value), 1226 tlv_value); 1227 } 1228 break; 1229 case JUNIPER_EXT_TLV_IFL_IDX: /* fall through */ 1230 case JUNIPER_EXT_TLV_IFL_UNIT: 1231 case JUNIPER_EXT_TLV_IFD_IDX: 1232 default: 1233 if (tlv_value != -1) { 1234 if (vflag>1) 1235 printf("%u",tlv_value); 1236 } 1237 break; 1238 } 1239 1240 tptr+=tlv_len; 1241 jnx_ext_len -= tlv_len+JUNIPER_EXT_TLV_OVERHEAD; 1242 } 1243 1244 if (vflag>1) 1245 printf("\n\t-----original packet-----\n\t"); 1246 } 1247 1248 if ((l2info->flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) { 1249 if (eflag) 1250 printf("no-L2-hdr, "); 1251 1252 /* there is no link-layer present - 1253 * perform the v4/v6 heuristics 1254 * to figure out what it is 1255 */ 1256 TCHECK2(p[jnx_header_len+4],1); 1257 if(ip_heuristic_guess(p+jnx_header_len+4,l2info->length-(jnx_header_len+4)) == 0) 1258 printf("no IP-hdr found!"); 1259 1260 l2info->header_len=jnx_header_len+4; 1261 return 0; /* stop parsing the output further */ 1262 1263 } 1264 l2info->header_len = jnx_header_len; 1265 p+=l2info->header_len; 1266 l2info->length -= l2info->header_len; 1267 l2info->caplen -= l2info->header_len; 1268 1269 /* search through the cookie table and copy values matching for our PIC type */ 1270 while (lp->s != NULL) { 1271 if (lp->pictype == l2info->pictype) { 1272 1273 l2info->cookie_len += lp->cookie_len; 1274 1275 switch (p[0]) { 1276 case LS_COOKIE_ID: 1277 l2info->cookie_type = LS_COOKIE_ID; 1278 l2info->cookie_len += 2; 1279 break; 1280 case AS_COOKIE_ID: 1281 l2info->cookie_type = AS_COOKIE_ID; 1282 l2info->cookie_len = 8; 1283 break; 1284 1285 default: 1286 l2info->bundle = l2info->cookie[0]; 1287 break; 1288 } 1289 1290 1291 #ifdef DLT_JUNIPER_MFR 1292 /* MFR child links don't carry cookies */ 1293 if (l2info->pictype == DLT_JUNIPER_MFR && 1294 (p[0] & MFR_BE_MASK) == MFR_BE_MASK) { 1295 l2info->cookie_len = 0; 1296 } 1297 #endif 1298 1299 l2info->header_len += l2info->cookie_len; 1300 l2info->length -= l2info->cookie_len; 1301 l2info->caplen -= l2info->cookie_len; 1302 1303 if (eflag) 1304 printf("%s-PIC, cookie-len %u", 1305 lp->s, 1306 l2info->cookie_len); 1307 1308 if (l2info->cookie_len > 0) { 1309 TCHECK2(p[0],l2info->cookie_len); 1310 if (eflag) 1311 printf(", cookie 0x"); 1312 for (idx = 0; idx < l2info->cookie_len; idx++) { 1313 l2info->cookie[idx] = p[idx]; /* copy cookie data */ 1314 if (eflag) printf("%02x",p[idx]); 1315 } 1316 } 1317 1318 if (eflag) printf(": "); /* print demarc b/w L2/L3*/ 1319 1320 1321 l2info->proto = EXTRACT_16BITS(p+l2info->cookie_len); 1322 break; 1323 } 1324 ++lp; 1325 } 1326 p+=l2info->cookie_len; 1327 1328 /* DLT_ specific parsing */ 1329 switch(l2info->pictype) { 1330 #ifdef DLT_JUNIPER_MLPPP 1331 case DLT_JUNIPER_MLPPP: 1332 switch (l2info->cookie_type) { 1333 case LS_COOKIE_ID: 1334 l2info->bundle = l2info->cookie[1]; 1335 break; 1336 case AS_COOKIE_ID: 1337 l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff; 1338 l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK; 1339 break; 1340 default: 1341 l2info->bundle = l2info->cookie[0]; 1342 break; 1343 } 1344 break; 1345 #endif 1346 #ifdef DLT_JUNIPER_MLFR 1347 case DLT_JUNIPER_MLFR: 1348 switch (l2info->cookie_type) { 1349 case LS_COOKIE_ID: 1350 l2info->bundle = l2info->cookie[1]; 1351 l2info->proto = EXTRACT_16BITS(p); 1352 l2info->header_len += 2; 1353 l2info->length -= 2; 1354 l2info->caplen -= 2; 1355 break; 1356 case AS_COOKIE_ID: 1357 l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff; 1358 l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK; 1359 break; 1360 default: 1361 l2info->bundle = l2info->cookie[0]; 1362 l2info->header_len += 2; 1363 l2info->length -= 2; 1364 l2info->caplen -= 2; 1365 break; 1366 } 1367 break; 1368 #endif 1369 #ifdef DLT_JUNIPER_MFR 1370 case DLT_JUNIPER_MFR: 1371 switch (l2info->cookie_type) { 1372 case LS_COOKIE_ID: 1373 l2info->bundle = l2info->cookie[1]; 1374 l2info->proto = EXTRACT_16BITS(p); 1375 l2info->header_len += 2; 1376 l2info->length -= 2; 1377 l2info->caplen -= 2; 1378 break; 1379 case AS_COOKIE_ID: 1380 l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff; 1381 l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK; 1382 break; 1383 default: 1384 l2info->bundle = l2info->cookie[0]; 1385 break; 1386 } 1387 break; 1388 #endif 1389 #ifdef DLT_JUNIPER_ATM2 1390 case DLT_JUNIPER_ATM2: 1391 TCHECK2(p[0],4); 1392 /* ATM cell relay control word present ? */ 1393 if (l2info->cookie[7] & ATM2_PKT_TYPE_MASK) { 1394 control_word = EXTRACT_32BITS(p); 1395 /* some control word heuristics */ 1396 switch(control_word) { 1397 case 0: /* zero control word */ 1398 case 0x08000000: /* < JUNOS 7.4 control-word */ 1399 case 0x08380000: /* cntl word plus cell length (56) >= JUNOS 7.4*/ 1400 l2info->header_len += 4; 1401 break; 1402 default: 1403 break; 1404 } 1405 1406 if (eflag) 1407 printf("control-word 0x%08x ", control_word); 1408 } 1409 break; 1410 #endif 1411 #ifdef DLT_JUNIPER_GGSN 1412 case DLT_JUNIPER_GGSN: 1413 break; 1414 #endif 1415 #ifdef DLT_JUNIPER_ATM1 1416 case DLT_JUNIPER_ATM1: 1417 break; 1418 #endif 1419 #ifdef DLT_JUNIPER_PPP 1420 case DLT_JUNIPER_PPP: 1421 break; 1422 #endif 1423 #ifdef DLT_JUNIPER_CHDLC 1424 case DLT_JUNIPER_CHDLC: 1425 break; 1426 #endif 1427 #ifdef DLT_JUNIPER_ETHER 1428 case DLT_JUNIPER_ETHER: 1429 break; 1430 #endif 1431 #ifdef DLT_JUNIPER_FRELAY 1432 case DLT_JUNIPER_FRELAY: 1433 break; 1434 #endif 1435 1436 default: 1437 printf("Unknown Juniper DLT_ type %u: ", l2info->pictype); 1438 break; 1439 } 1440 1441 if (eflag > 1) 1442 printf("hlen %u, proto 0x%04x, ",l2info->header_len,l2info->proto); 1443 1444 return 1; /* everything went ok so far. continue parsing */ 1445 trunc: 1446 printf("[|juniper_hdr], length %u",h->len); 1447 return 0; 1448 } 1449 1450 1451 /* 1452 * Local Variables: 1453 * c-style: whitesmith 1454 * c-basic-offset: 4 1455 * End: 1456 */ 1457
