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[unleashed.git] / contrib / tcpdump / print-juniper.c
blobff1de9c03d15bf9edf72b93ba2c356e4754b3262
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@gredler.at)
16 */
17
18 /* \summary: DLT_JUNIPER_* printers */
19
20 #ifndef lint
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 <netdissect-stdinc.h>
30
31 #include <string.h>
32
33 #include "netdissect.h"
34 #include "addrtoname.h"
35 #include "extract.h"
36 #include "ppp.h"
37 #include "llc.h"
38 #include "nlpid.h"
39 #include "ethertype.h"
40 #include "atm.h"
41
42 #define JUNIPER_BPF_OUT 0 /* Outgoing packet */
43 #define JUNIPER_BPF_IN 1 /* Incoming packet */
44 #define JUNIPER_BPF_PKT_IN 0x1 /* Incoming packet */
45 #define JUNIPER_BPF_NO_L2 0x2 /* L2 header stripped */
46 #define JUNIPER_BPF_IIF 0x4 /* IIF is valid */
47 #define JUNIPER_BPF_FILTER 0x40 /* BPF filtering is supported */
48 #define JUNIPER_BPF_EXT 0x80 /* extensions present */
49 #define JUNIPER_MGC_NUMBER 0x4d4743 /* = "MGC" */
50
51 #define JUNIPER_LSQ_COOKIE_RE (1 << 3)
52 #define JUNIPER_LSQ_COOKIE_DIR (1 << 2)
53 #define JUNIPER_LSQ_L3_PROTO_SHIFT 4
54 #define JUNIPER_LSQ_L3_PROTO_MASK (0x17 << JUNIPER_LSQ_L3_PROTO_SHIFT)
55 #define JUNIPER_LSQ_L3_PROTO_IPV4 (0 << JUNIPER_LSQ_L3_PROTO_SHIFT)
56 #define JUNIPER_LSQ_L3_PROTO_IPV6 (1 << JUNIPER_LSQ_L3_PROTO_SHIFT)
57 #define JUNIPER_LSQ_L3_PROTO_MPLS (2 << JUNIPER_LSQ_L3_PROTO_SHIFT)
58 #define JUNIPER_LSQ_L3_PROTO_ISO (3 << JUNIPER_LSQ_L3_PROTO_SHIFT)
59 #define AS_PIC_COOKIE_LEN 8
60
61 #define JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE 1
62 #define JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE 2
63 #define JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE 3
64 #define JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE 4
65 #define JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE 5
66
67 static const struct tok juniper_ipsec_type_values[] = {
68 { JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE, "ESP ENCR-AUTH" },
69 { JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE, "ESP ENCR-AH AUTH" },
70 { JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE, "ESP AUTH" },
71 { JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE, "AH AUTH" },
72 { JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE, "ESP ENCR" },
73 { 0, NULL}
74 };
75
76 static const struct tok juniper_direction_values[] = {
77 { JUNIPER_BPF_IN, "In"},
78 { JUNIPER_BPF_OUT, "Out"},
79 { 0, NULL}
80 };
81
82 /* codepoints for encoding extensions to a .pcap file */
83 enum {
84 JUNIPER_EXT_TLV_IFD_IDX = 1,
85 JUNIPER_EXT_TLV_IFD_NAME = 2,
86 JUNIPER_EXT_TLV_IFD_MEDIATYPE = 3,
87 JUNIPER_EXT_TLV_IFL_IDX = 4,
88 JUNIPER_EXT_TLV_IFL_UNIT = 5,
89 JUNIPER_EXT_TLV_IFL_ENCAPS = 6,
90 JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE = 7,
91 JUNIPER_EXT_TLV_TTP_IFL_ENCAPS = 8
92 };
93
94 /* 1 byte type and 1-byte length */
95 #define JUNIPER_EXT_TLV_OVERHEAD 2U
96
97 static const struct tok jnx_ext_tlv_values[] = {
98 { JUNIPER_EXT_TLV_IFD_IDX, "Device Interface Index" },
99 { JUNIPER_EXT_TLV_IFD_NAME,"Device Interface Name" },
100 { JUNIPER_EXT_TLV_IFD_MEDIATYPE, "Device Media Type" },
101 { JUNIPER_EXT_TLV_IFL_IDX, "Logical Interface Index" },
102 { JUNIPER_EXT_TLV_IFL_UNIT,"Logical Unit Number" },
103 { JUNIPER_EXT_TLV_IFL_ENCAPS, "Logical Interface Encapsulation" },
104 { JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE, "TTP derived Device Media Type" },
105 { JUNIPER_EXT_TLV_TTP_IFL_ENCAPS, "TTP derived Logical Interface Encapsulation" },
106 { 0, NULL }
107 };
108
109 static const struct tok jnx_flag_values[] = {
110 { JUNIPER_BPF_EXT, "Ext" },
111 { JUNIPER_BPF_FILTER, "Filter" },
112 { JUNIPER_BPF_IIF, "IIF" },
113 { JUNIPER_BPF_NO_L2, "no-L2" },
114 { JUNIPER_BPF_PKT_IN, "In" },
115 { 0, NULL }
116 };
117
118 #define JUNIPER_IFML_ETHER 1
119 #define JUNIPER_IFML_FDDI 2
120 #define JUNIPER_IFML_TOKENRING 3
121 #define JUNIPER_IFML_PPP 4
122 #define JUNIPER_IFML_FRAMERELAY 5
123 #define JUNIPER_IFML_CISCOHDLC 6
124 #define JUNIPER_IFML_SMDSDXI 7
125 #define JUNIPER_IFML_ATMPVC 8
126 #define JUNIPER_IFML_PPP_CCC 9
127 #define JUNIPER_IFML_FRAMERELAY_CCC 10
128 #define JUNIPER_IFML_IPIP 11
129 #define JUNIPER_IFML_GRE 12
130 #define JUNIPER_IFML_PIM 13
131 #define JUNIPER_IFML_PIMD 14
132 #define JUNIPER_IFML_CISCOHDLC_CCC 15
133 #define JUNIPER_IFML_VLAN_CCC 16
134 #define JUNIPER_IFML_MLPPP 17
135 #define JUNIPER_IFML_MLFR 18
136 #define JUNIPER_IFML_ML 19
137 #define JUNIPER_IFML_LSI 20
138 #define JUNIPER_IFML_DFE 21
139 #define JUNIPER_IFML_ATM_CELLRELAY_CCC 22
140 #define JUNIPER_IFML_CRYPTO 23
141 #define JUNIPER_IFML_GGSN 24
142 #define JUNIPER_IFML_LSI_PPP 25
143 #define JUNIPER_IFML_LSI_CISCOHDLC 26
144 #define JUNIPER_IFML_PPP_TCC 27
145 #define JUNIPER_IFML_FRAMERELAY_TCC 28
146 #define JUNIPER_IFML_CISCOHDLC_TCC 29
147 #define JUNIPER_IFML_ETHERNET_CCC 30
148 #define JUNIPER_IFML_VT 31
149 #define JUNIPER_IFML_EXTENDED_VLAN_CCC 32
150 #define JUNIPER_IFML_ETHER_OVER_ATM 33
151 #define JUNIPER_IFML_MONITOR 34
152 #define JUNIPER_IFML_ETHERNET_TCC 35
153 #define JUNIPER_IFML_VLAN_TCC 36
154 #define JUNIPER_IFML_EXTENDED_VLAN_TCC 37
155 #define JUNIPER_IFML_CONTROLLER 38
156 #define JUNIPER_IFML_MFR 39
157 #define JUNIPER_IFML_LS 40
158 #define JUNIPER_IFML_ETHERNET_VPLS 41
159 #define JUNIPER_IFML_ETHERNET_VLAN_VPLS 42
160 #define JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS 43
161 #define JUNIPER_IFML_LT 44
162 #define JUNIPER_IFML_SERVICES 45
163 #define JUNIPER_IFML_ETHER_VPLS_OVER_ATM 46
164 #define JUNIPER_IFML_FR_PORT_CCC 47
165 #define JUNIPER_IFML_FRAMERELAY_EXT_CCC 48
166 #define JUNIPER_IFML_FRAMERELAY_EXT_TCC 49
167 #define JUNIPER_IFML_FRAMERELAY_FLEX 50
168 #define JUNIPER_IFML_GGSNI 51
169 #define JUNIPER_IFML_ETHERNET_FLEX 52
170 #define JUNIPER_IFML_COLLECTOR 53
171 #define JUNIPER_IFML_AGGREGATOR 54
172 #define JUNIPER_IFML_LAPD 55
173 #define JUNIPER_IFML_PPPOE 56
174 #define JUNIPER_IFML_PPP_SUBORDINATE 57
175 #define JUNIPER_IFML_CISCOHDLC_SUBORDINATE 58
176 #define JUNIPER_IFML_DFC 59
177 #define JUNIPER_IFML_PICPEER 60
178
179 static const struct tok juniper_ifmt_values[] = {
180 { JUNIPER_IFML_ETHER, "Ethernet" },
181 { JUNIPER_IFML_FDDI, "FDDI" },
182 { JUNIPER_IFML_TOKENRING, "Token-Ring" },
183 { JUNIPER_IFML_PPP, "PPP" },
184 { JUNIPER_IFML_PPP_SUBORDINATE, "PPP-Subordinate" },
185 { JUNIPER_IFML_FRAMERELAY, "Frame-Relay" },
186 { JUNIPER_IFML_CISCOHDLC, "Cisco-HDLC" },
187 { JUNIPER_IFML_SMDSDXI, "SMDS-DXI" },
188 { JUNIPER_IFML_ATMPVC, "ATM-PVC" },
189 { JUNIPER_IFML_PPP_CCC, "PPP-CCC" },
190 { JUNIPER_IFML_FRAMERELAY_CCC, "Frame-Relay-CCC" },
191 { JUNIPER_IFML_FRAMERELAY_EXT_CCC, "Extended FR-CCC" },
192 { JUNIPER_IFML_IPIP, "IP-over-IP" },
193 { JUNIPER_IFML_GRE, "GRE" },
194 { JUNIPER_IFML_PIM, "PIM-Encapsulator" },
195 { JUNIPER_IFML_PIMD, "PIM-Decapsulator" },
196 { JUNIPER_IFML_CISCOHDLC_CCC, "Cisco-HDLC-CCC" },
197 { JUNIPER_IFML_VLAN_CCC, "VLAN-CCC" },
198 { JUNIPER_IFML_EXTENDED_VLAN_CCC, "Extended-VLAN-CCC" },
199 { JUNIPER_IFML_MLPPP, "Multilink-PPP" },
200 { JUNIPER_IFML_MLFR, "Multilink-FR" },
201 { JUNIPER_IFML_MFR, "Multilink-FR-UNI-NNI" },
202 { JUNIPER_IFML_ML, "Multilink" },
203 { JUNIPER_IFML_LS, "LinkService" },
204 { JUNIPER_IFML_LSI, "LSI" },
205 { JUNIPER_IFML_ATM_CELLRELAY_CCC, "ATM-CCC-Cell-Relay" },
206 { JUNIPER_IFML_CRYPTO, "IPSEC-over-IP" },
207 { JUNIPER_IFML_GGSN, "GGSN" },
208 { JUNIPER_IFML_PPP_TCC, "PPP-TCC" },
209 { JUNIPER_IFML_FRAMERELAY_TCC, "Frame-Relay-TCC" },
210 { JUNIPER_IFML_FRAMERELAY_EXT_TCC, "Extended FR-TCC" },
211 { JUNIPER_IFML_CISCOHDLC_TCC, "Cisco-HDLC-TCC" },
212 { JUNIPER_IFML_ETHERNET_CCC, "Ethernet-CCC" },
213 { JUNIPER_IFML_VT, "VPN-Loopback-tunnel" },
214 { JUNIPER_IFML_ETHER_OVER_ATM, "Ethernet-over-ATM" },
215 { JUNIPER_IFML_ETHER_VPLS_OVER_ATM, "Ethernet-VPLS-over-ATM" },
216 { JUNIPER_IFML_MONITOR, "Monitor" },
217 { JUNIPER_IFML_ETHERNET_TCC, "Ethernet-TCC" },
218 { JUNIPER_IFML_VLAN_TCC, "VLAN-TCC" },
219 { JUNIPER_IFML_EXTENDED_VLAN_TCC, "Extended-VLAN-TCC" },
220 { JUNIPER_IFML_CONTROLLER, "Controller" },
221 { JUNIPER_IFML_ETHERNET_VPLS, "VPLS" },
222 { JUNIPER_IFML_ETHERNET_VLAN_VPLS, "VLAN-VPLS" },
223 { JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS, "Extended-VLAN-VPLS" },
224 { JUNIPER_IFML_LT, "Logical-tunnel" },
225 { JUNIPER_IFML_SERVICES, "General-Services" },
226 { JUNIPER_IFML_PPPOE, "PPPoE" },
227 { JUNIPER_IFML_ETHERNET_FLEX, "Flexible-Ethernet-Services" },
228 { JUNIPER_IFML_FRAMERELAY_FLEX, "Flexible-FrameRelay" },
229 { JUNIPER_IFML_COLLECTOR, "Flow-collection" },
230 { JUNIPER_IFML_PICPEER, "PIC Peer" },
231 { JUNIPER_IFML_DFC, "Dynamic-Flow-Capture" },
232 {0, NULL}
233 };
234
235 #define JUNIPER_IFLE_ATM_SNAP 2
236 #define JUNIPER_IFLE_ATM_NLPID 3
237 #define JUNIPER_IFLE_ATM_VCMUX 4
238 #define JUNIPER_IFLE_ATM_LLC 5
239 #define JUNIPER_IFLE_ATM_PPP_VCMUX 6
240 #define JUNIPER_IFLE_ATM_PPP_LLC 7
241 #define JUNIPER_IFLE_ATM_PPP_FUNI 8
242 #define JUNIPER_IFLE_ATM_CCC 9
243 #define JUNIPER_IFLE_FR_NLPID 10
244 #define JUNIPER_IFLE_FR_SNAP 11
245 #define JUNIPER_IFLE_FR_PPP 12
246 #define JUNIPER_IFLE_FR_CCC 13
247 #define JUNIPER_IFLE_ENET2 14
248 #define JUNIPER_IFLE_IEEE8023_SNAP 15
249 #define JUNIPER_IFLE_IEEE8023_LLC 16
250 #define JUNIPER_IFLE_PPP 17
251 #define JUNIPER_IFLE_CISCOHDLC 18
252 #define JUNIPER_IFLE_PPP_CCC 19
253 #define JUNIPER_IFLE_IPIP_NULL 20
254 #define JUNIPER_IFLE_PIM_NULL 21
255 #define JUNIPER_IFLE_GRE_NULL 22
256 #define JUNIPER_IFLE_GRE_PPP 23
257 #define JUNIPER_IFLE_PIMD_DECAPS 24
258 #define JUNIPER_IFLE_CISCOHDLC_CCC 25
259 #define JUNIPER_IFLE_ATM_CISCO_NLPID 26
260 #define JUNIPER_IFLE_VLAN_CCC 27
261 #define JUNIPER_IFLE_MLPPP 28
262 #define JUNIPER_IFLE_MLFR 29
263 #define JUNIPER_IFLE_LSI_NULL 30
264 #define JUNIPER_IFLE_AGGREGATE_UNUSED 31
265 #define JUNIPER_IFLE_ATM_CELLRELAY_CCC 32
266 #define JUNIPER_IFLE_CRYPTO 33
267 #define JUNIPER_IFLE_GGSN 34
268 #define JUNIPER_IFLE_ATM_TCC 35
269 #define JUNIPER_IFLE_FR_TCC 36
270 #define JUNIPER_IFLE_PPP_TCC 37
271 #define JUNIPER_IFLE_CISCOHDLC_TCC 38
272 #define JUNIPER_IFLE_ETHERNET_CCC 39
273 #define JUNIPER_IFLE_VT 40
274 #define JUNIPER_IFLE_ATM_EOA_LLC 41
275 #define JUNIPER_IFLE_EXTENDED_VLAN_CCC 42
276 #define JUNIPER_IFLE_ATM_SNAP_TCC 43
277 #define JUNIPER_IFLE_MONITOR 44
278 #define JUNIPER_IFLE_ETHERNET_TCC 45
279 #define JUNIPER_IFLE_VLAN_TCC 46
280 #define JUNIPER_IFLE_EXTENDED_VLAN_TCC 47
281 #define JUNIPER_IFLE_MFR 48
282 #define JUNIPER_IFLE_ETHERNET_VPLS 49
283 #define JUNIPER_IFLE_ETHERNET_VLAN_VPLS 50
284 #define JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS 51
285 #define JUNIPER_IFLE_SERVICES 52
286 #define JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC 53
287 #define JUNIPER_IFLE_FR_PORT_CCC 54
288 #define JUNIPER_IFLE_ATM_MLPPP_LLC 55
289 #define JUNIPER_IFLE_ATM_EOA_CCC 56
290 #define JUNIPER_IFLE_LT_VLAN 57
291 #define JUNIPER_IFLE_COLLECTOR 58
292 #define JUNIPER_IFLE_AGGREGATOR 59
293 #define JUNIPER_IFLE_LAPD 60
294 #define JUNIPER_IFLE_ATM_PPPOE_LLC 61
295 #define JUNIPER_IFLE_ETHERNET_PPPOE 62
296 #define JUNIPER_IFLE_PPPOE 63
297 #define JUNIPER_IFLE_PPP_SUBORDINATE 64
298 #define JUNIPER_IFLE_CISCOHDLC_SUBORDINATE 65
299 #define JUNIPER_IFLE_DFC 66
300 #define JUNIPER_IFLE_PICPEER 67
301
302 static const struct tok juniper_ifle_values[] = {
303 { JUNIPER_IFLE_AGGREGATOR, "Aggregator" },
304 { JUNIPER_IFLE_ATM_CCC, "CCC over ATM" },
305 { JUNIPER_IFLE_ATM_CELLRELAY_CCC, "ATM CCC Cell Relay" },
306 { JUNIPER_IFLE_ATM_CISCO_NLPID, "CISCO compatible NLPID" },
307 { JUNIPER_IFLE_ATM_EOA_CCC, "Ethernet over ATM CCC" },
308 { JUNIPER_IFLE_ATM_EOA_LLC, "Ethernet over ATM LLC" },
309 { JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC, "Ethernet VPLS over ATM LLC" },
310 { JUNIPER_IFLE_ATM_LLC, "ATM LLC" },
311 { JUNIPER_IFLE_ATM_MLPPP_LLC, "MLPPP over ATM LLC" },
312 { JUNIPER_IFLE_ATM_NLPID, "ATM NLPID" },
313 { JUNIPER_IFLE_ATM_PPPOE_LLC, "PPPoE over ATM LLC" },
314 { JUNIPER_IFLE_ATM_PPP_FUNI, "PPP over FUNI" },
315 { JUNIPER_IFLE_ATM_PPP_LLC, "PPP over ATM LLC" },
316 { JUNIPER_IFLE_ATM_PPP_VCMUX, "PPP over ATM VCMUX" },
317 { JUNIPER_IFLE_ATM_SNAP, "ATM SNAP" },
318 { JUNIPER_IFLE_ATM_SNAP_TCC, "ATM SNAP TCC" },
319 { JUNIPER_IFLE_ATM_TCC, "ATM VCMUX TCC" },
320 { JUNIPER_IFLE_ATM_VCMUX, "ATM VCMUX" },
321 { JUNIPER_IFLE_CISCOHDLC, "C-HDLC" },
322 { JUNIPER_IFLE_CISCOHDLC_CCC, "C-HDLC CCC" },
323 { JUNIPER_IFLE_CISCOHDLC_SUBORDINATE, "C-HDLC via dialer" },
324 { JUNIPER_IFLE_CISCOHDLC_TCC, "C-HDLC TCC" },
325 { JUNIPER_IFLE_COLLECTOR, "Collector" },
326 { JUNIPER_IFLE_CRYPTO, "Crypto" },
327 { JUNIPER_IFLE_ENET2, "Ethernet" },
328 { JUNIPER_IFLE_ETHERNET_CCC, "Ethernet CCC" },
329 { JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS, "Extended VLAN VPLS" },
330 { JUNIPER_IFLE_ETHERNET_PPPOE, "PPPoE over Ethernet" },
331 { JUNIPER_IFLE_ETHERNET_TCC, "Ethernet TCC" },
332 { JUNIPER_IFLE_ETHERNET_VLAN_VPLS, "VLAN VPLS" },
333 { JUNIPER_IFLE_ETHERNET_VPLS, "VPLS" },
334 { JUNIPER_IFLE_EXTENDED_VLAN_CCC, "Extended VLAN CCC" },
335 { JUNIPER_IFLE_EXTENDED_VLAN_TCC, "Extended VLAN TCC" },
336 { JUNIPER_IFLE_FR_CCC, "FR CCC" },
337 { JUNIPER_IFLE_FR_NLPID, "FR NLPID" },
338 { JUNIPER_IFLE_FR_PORT_CCC, "FR CCC" },
339 { JUNIPER_IFLE_FR_PPP, "FR PPP" },
340 { JUNIPER_IFLE_FR_SNAP, "FR SNAP" },
341 { JUNIPER_IFLE_FR_TCC, "FR TCC" },
342 { JUNIPER_IFLE_GGSN, "GGSN" },
343 { JUNIPER_IFLE_GRE_NULL, "GRE NULL" },
344 { JUNIPER_IFLE_GRE_PPP, "PPP over GRE" },
345 { JUNIPER_IFLE_IPIP_NULL, "IPIP" },
346 { JUNIPER_IFLE_LAPD, "LAPD" },
347 { JUNIPER_IFLE_LSI_NULL, "LSI Null" },
348 { JUNIPER_IFLE_LT_VLAN, "LT VLAN" },
349 { JUNIPER_IFLE_MFR, "MFR" },
350 { JUNIPER_IFLE_MLFR, "MLFR" },
351 { JUNIPER_IFLE_MLPPP, "MLPPP" },
352 { JUNIPER_IFLE_MONITOR, "Monitor" },
353 { JUNIPER_IFLE_PIMD_DECAPS, "PIMd" },
354 { JUNIPER_IFLE_PIM_NULL, "PIM Null" },
355 { JUNIPER_IFLE_PPP, "PPP" },
356 { JUNIPER_IFLE_PPPOE, "PPPoE" },
357 { JUNIPER_IFLE_PPP_CCC, "PPP CCC" },
358 { JUNIPER_IFLE_PPP_SUBORDINATE, "" },
359 { JUNIPER_IFLE_PPP_TCC, "PPP TCC" },
360 { JUNIPER_IFLE_SERVICES, "General Services" },
361 { JUNIPER_IFLE_VLAN_CCC, "VLAN CCC" },
362 { JUNIPER_IFLE_VLAN_TCC, "VLAN TCC" },
363 { JUNIPER_IFLE_VT, "VT" },
364 {0, NULL}
365 };
366
367 struct juniper_cookie_table_t {
368 uint32_t pictype; /* pic type */
369 uint8_t cookie_len; /* cookie len */
370 const char *s; /* pic name */
371 };
372
373 static const struct juniper_cookie_table_t juniper_cookie_table[] = {
374 #ifdef DLT_JUNIPER_ATM1
375 { DLT_JUNIPER_ATM1, 4, "ATM1"},
376 #endif
377 #ifdef DLT_JUNIPER_ATM2
378 { DLT_JUNIPER_ATM2, 8, "ATM2"},
379 #endif
380 #ifdef DLT_JUNIPER_MLPPP
381 { DLT_JUNIPER_MLPPP, 2, "MLPPP"},
382 #endif
383 #ifdef DLT_JUNIPER_MLFR
384 { DLT_JUNIPER_MLFR, 2, "MLFR"},
385 #endif
386 #ifdef DLT_JUNIPER_MFR
387 { DLT_JUNIPER_MFR, 4, "MFR"},
388 #endif
389 #ifdef DLT_JUNIPER_PPPOE
390 { DLT_JUNIPER_PPPOE, 0, "PPPoE"},
391 #endif
392 #ifdef DLT_JUNIPER_PPPOE_ATM
393 { DLT_JUNIPER_PPPOE_ATM, 0, "PPPoE ATM"},
394 #endif
395 #ifdef DLT_JUNIPER_GGSN
396 { DLT_JUNIPER_GGSN, 8, "GGSN"},
397 #endif
398 #ifdef DLT_JUNIPER_MONITOR
399 { DLT_JUNIPER_MONITOR, 8, "MONITOR"},
400 #endif
401 #ifdef DLT_JUNIPER_SERVICES
402 { DLT_JUNIPER_SERVICES, 8, "AS"},
403 #endif
404 #ifdef DLT_JUNIPER_ES
405 { DLT_JUNIPER_ES, 0, "ES"},
406 #endif
407 { 0, 0, NULL }
408 };
409
410 struct juniper_l2info_t {
411 uint32_t length;
412 uint32_t caplen;
413 uint32_t pictype;
414 uint8_t direction;
415 uint8_t header_len;
416 uint8_t cookie_len;
417 uint8_t cookie_type;
418 uint8_t cookie[8];
419 uint8_t bundle;
420 uint16_t proto;
421 uint8_t flags;
422 };
423
424 #define LS_COOKIE_ID 0x54
425 #define AS_COOKIE_ID 0x47
426 #define LS_MLFR_COOKIE_LEN 4
427 #define ML_MLFR_COOKIE_LEN 2
428 #define LS_MFR_COOKIE_LEN 6
429 #define ATM1_COOKIE_LEN 4
430 #define ATM2_COOKIE_LEN 8
431
432 #define ATM2_PKT_TYPE_MASK 0x70
433 #define ATM2_GAP_COUNT_MASK 0x3F
434
435 #define JUNIPER_PROTO_NULL 1
436 #define JUNIPER_PROTO_IPV4 2
437 #define JUNIPER_PROTO_IPV6 6
438
439 #define MFR_BE_MASK 0xc0
440
441 static const struct tok juniper_protocol_values[] = {
442 { JUNIPER_PROTO_NULL, "Null" },
443 { JUNIPER_PROTO_IPV4, "IPv4" },
444 { JUNIPER_PROTO_IPV6, "IPv6" },
445 { 0, NULL}
446 };
447
448 static int ip_heuristic_guess(netdissect_options *, register const u_char *, u_int);
449 static int juniper_ppp_heuristic_guess(netdissect_options *, register const u_char *, u_int);
450 static int juniper_parse_header(netdissect_options *, const u_char *, const struct pcap_pkthdr *, struct juniper_l2info_t *);
451
452 #ifdef DLT_JUNIPER_GGSN
453 u_int
454 juniper_ggsn_print(netdissect_options *ndo,
455 const struct pcap_pkthdr *h, register const u_char *p)
456 {
457 struct juniper_l2info_t l2info;
458 struct juniper_ggsn_header {
459 uint8_t svc_id;
460 uint8_t flags_len;
461 uint8_t proto;
462 uint8_t flags;
463 uint8_t vlan_id[2];
464 uint8_t res[2];
465 };
466 const struct juniper_ggsn_header *gh;
467
468 l2info.pictype = DLT_JUNIPER_GGSN;
469 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
470 return l2info.header_len;
471
472 p+=l2info.header_len;
473 gh = (struct juniper_ggsn_header *)&l2info.cookie;
474
475 ND_TCHECK(*gh);
476 if (ndo->ndo_eflag) {
477 ND_PRINT((ndo, "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(ndo, p, l2info.length);
486 break;
487 case JUNIPER_PROTO_IPV6:
488 ip6_print(ndo, p, l2info.length);
489 break;
490 default:
491 if (!ndo->ndo_eflag)
492 ND_PRINT((ndo, "unknown GGSN proto (%u)", gh->proto));
493 }
494
495 return l2info.header_len;
496
497 trunc:
498 ND_PRINT((ndo, "[|juniper_services]"));
499 return l2info.header_len;
500 }
501 #endif
502
503 #ifdef DLT_JUNIPER_ES
504 u_int
505 juniper_es_print(netdissect_options *ndo,
506 const struct pcap_pkthdr *h, register const u_char *p)
507 {
508 struct juniper_l2info_t l2info;
509 struct juniper_ipsec_header {
510 uint8_t sa_index[2];
511 uint8_t ttl;
512 uint8_t type;
513 uint8_t spi[4];
514 uint8_t src_ip[4];
515 uint8_t dst_ip[4];
516 };
517 u_int rewrite_len,es_type_bundle;
518 const struct juniper_ipsec_header *ih;
519
520 l2info.pictype = DLT_JUNIPER_ES;
521 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
522 return l2info.header_len;
523
524 p+=l2info.header_len;
525 ih = (const struct juniper_ipsec_header *)p;
526
527 ND_TCHECK(*ih);
528 switch (ih->type) {
529 case JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE:
530 case JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE:
531 rewrite_len = 0;
532 es_type_bundle = 1;
533 break;
534 case JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE:
535 case JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE:
536 case JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE:
537 rewrite_len = 16;
538 es_type_bundle = 0;
539 break;
540 default:
541 ND_PRINT((ndo, "ES Invalid type %u, length %u",
542 ih->type,
543 l2info.length));
544 return l2info.header_len;
545 }
546
547 l2info.length-=rewrite_len;
548 p+=rewrite_len;
549
550 if (ndo->ndo_eflag) {
551 if (!es_type_bundle) {
552 ND_PRINT((ndo, "ES SA, index %u, ttl %u type %s (%u), spi %u, Tunnel %s > %s, length %u\n",
553 EXTRACT_16BITS(&ih->sa_index),
554 ih->ttl,
555 tok2str(juniper_ipsec_type_values,"Unknown",ih->type),
556 ih->type,
557 EXTRACT_32BITS(&ih->spi),
558 ipaddr_string(ndo, &ih->src_ip),
559 ipaddr_string(ndo, &ih->dst_ip),
560 l2info.length));
561 } else {
562 ND_PRINT((ndo, "ES SA, index %u, ttl %u type %s (%u), length %u\n",
563 EXTRACT_16BITS(&ih->sa_index),
564 ih->ttl,
565 tok2str(juniper_ipsec_type_values,"Unknown",ih->type),
566 ih->type,
567 l2info.length));
568 }
569 }
570
571 ip_print(ndo, p, l2info.length);
572 return l2info.header_len;
573
574 trunc:
575 ND_PRINT((ndo, "[|juniper_services]"));
576 return l2info.header_len;
577 }
578 #endif
579
580 #ifdef DLT_JUNIPER_MONITOR
581 u_int
582 juniper_monitor_print(netdissect_options *ndo,
583 const struct pcap_pkthdr *h, register const u_char *p)
584 {
585 struct juniper_l2info_t l2info;
586 struct juniper_monitor_header {
587 uint8_t pkt_type;
588 uint8_t padding;
589 uint8_t iif[2];
590 uint8_t service_id[4];
591 };
592 const struct juniper_monitor_header *mh;
593
594 l2info.pictype = DLT_JUNIPER_MONITOR;
595 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
596 return l2info.header_len;
597
598 p+=l2info.header_len;
599 mh = (const struct juniper_monitor_header *)p;
600
601 ND_TCHECK(*mh);
602 if (ndo->ndo_eflag)
603 ND_PRINT((ndo, "service-id %u, iif %u, pkt-type %u: ",
604 EXTRACT_32BITS(&mh->service_id),
605 EXTRACT_16BITS(&mh->iif),
606 mh->pkt_type));
607
608 /* no proto field - lets guess by first byte of IP header*/
609 ip_heuristic_guess (ndo, p, l2info.length);
610
611 return l2info.header_len;
612
613 trunc:
614 ND_PRINT((ndo, "[|juniper_services]"));
615 return l2info.header_len;
616 }
617 #endif
618
619 #ifdef DLT_JUNIPER_SERVICES
620 u_int
621 juniper_services_print(netdissect_options *ndo,
622 const struct pcap_pkthdr *h, register const u_char *p)
623 {
624 struct juniper_l2info_t l2info;
625 struct juniper_services_header {
626 uint8_t svc_id;
627 uint8_t flags_len;
628 uint8_t svc_set_id[2];
629 uint8_t dir_iif[4];
630 };
631 const struct juniper_services_header *sh;
632
633 l2info.pictype = DLT_JUNIPER_SERVICES;
634 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
635 return l2info.header_len;
636
637 p+=l2info.header_len;
638 sh = (const struct juniper_services_header *)p;
639
640 ND_TCHECK(*sh);
641 if (ndo->ndo_eflag)
642 ND_PRINT((ndo, "service-id %u flags 0x%02x service-set-id 0x%04x iif %u: ",
643 sh->svc_id,
644 sh->flags_len,
645 EXTRACT_16BITS(&sh->svc_set_id),
646 EXTRACT_24BITS(&sh->dir_iif[1])));
647
648 /* no proto field - lets guess by first byte of IP header*/
649 ip_heuristic_guess (ndo, p, l2info.length);
650
651 return l2info.header_len;
652
653 trunc:
654 ND_PRINT((ndo, "[|juniper_services]"));
655 return l2info.header_len;
656 }
657 #endif
658
659 #ifdef DLT_JUNIPER_PPPOE
660 u_int
661 juniper_pppoe_print(netdissect_options *ndo,
662 const struct pcap_pkthdr *h, register const u_char *p)
663 {
664 struct juniper_l2info_t l2info;
665
666 l2info.pictype = DLT_JUNIPER_PPPOE;
667 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
668 return l2info.header_len;
669
670 p+=l2info.header_len;
671 /* this DLT contains nothing but raw ethernet frames */
672 ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
673 return l2info.header_len;
674 }
675 #endif
676
677 #ifdef DLT_JUNIPER_ETHER
678 u_int
679 juniper_ether_print(netdissect_options *ndo,
680 const struct pcap_pkthdr *h, register const u_char *p)
681 {
682 struct juniper_l2info_t l2info;
683
684 l2info.pictype = DLT_JUNIPER_ETHER;
685 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
686 return l2info.header_len;
687
688 p+=l2info.header_len;
689 /* this DLT contains nothing but raw Ethernet frames */
690 ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
691 return l2info.header_len;
692 }
693 #endif
694
695 #ifdef DLT_JUNIPER_PPP
696 u_int
697 juniper_ppp_print(netdissect_options *ndo,
698 const struct pcap_pkthdr *h, register const u_char *p)
699 {
700 struct juniper_l2info_t l2info;
701
702 l2info.pictype = DLT_JUNIPER_PPP;
703 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
704 return l2info.header_len;
705
706 p+=l2info.header_len;
707 /* this DLT contains nothing but raw ppp frames */
708 ppp_print(ndo, p, l2info.length);
709 return l2info.header_len;
710 }
711 #endif
712
713 #ifdef DLT_JUNIPER_FRELAY
714 u_int
715 juniper_frelay_print(netdissect_options *ndo,
716 const struct pcap_pkthdr *h, register const u_char *p)
717 {
718 struct juniper_l2info_t l2info;
719
720 l2info.pictype = DLT_JUNIPER_FRELAY;
721 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
722 return l2info.header_len;
723
724 p+=l2info.header_len;
725 /* this DLT contains nothing but raw frame-relay frames */
726 fr_print(ndo, p, l2info.length);
727 return l2info.header_len;
728 }
729 #endif
730
731 #ifdef DLT_JUNIPER_CHDLC
732 u_int
733 juniper_chdlc_print(netdissect_options *ndo,
734 const struct pcap_pkthdr *h, register const u_char *p)
735 {
736 struct juniper_l2info_t l2info;
737
738 l2info.pictype = DLT_JUNIPER_CHDLC;
739 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
740 return l2info.header_len;
741
742 p+=l2info.header_len;
743 /* this DLT contains nothing but raw c-hdlc frames */
744 chdlc_print(ndo, p, l2info.length);
745 return l2info.header_len;
746 }
747 #endif
748
749 #ifdef DLT_JUNIPER_PPPOE_ATM
750 u_int
751 juniper_pppoe_atm_print(netdissect_options *ndo,
752 const struct pcap_pkthdr *h, register const u_char *p)
753 {
754 struct juniper_l2info_t l2info;
755 uint16_t extracted_ethertype;
756
757 l2info.pictype = DLT_JUNIPER_PPPOE_ATM;
758 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
759 return l2info.header_len;
760
761 p+=l2info.header_len;
762
763 ND_TCHECK2(p[0], 2);
764 extracted_ethertype = EXTRACT_16BITS(p);
765 /* this DLT contains nothing but raw PPPoE frames,
766 * prepended with a type field*/
767 if (ethertype_print(ndo, extracted_ethertype,
768 p+ETHERTYPE_LEN,
769 l2info.length-ETHERTYPE_LEN,
770 l2info.caplen-ETHERTYPE_LEN,
771 NULL, NULL) == 0)
772 /* ether_type not known, probably it wasn't one */
773 ND_PRINT((ndo, "unknown ethertype 0x%04x", extracted_ethertype));
774
775 return l2info.header_len;
776
777 trunc:
778 ND_PRINT((ndo, "[|juniper_pppoe_atm]"));
779 return l2info.header_len;
780 }
781 #endif
782
783 #ifdef DLT_JUNIPER_MLPPP
784 u_int
785 juniper_mlppp_print(netdissect_options *ndo,
786 const struct pcap_pkthdr *h, register const u_char *p)
787 {
788 struct juniper_l2info_t l2info;
789
790 l2info.pictype = DLT_JUNIPER_MLPPP;
791 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
792 return l2info.header_len;
793
794 /* suppress Bundle-ID if frame was captured on a child-link
795 * best indicator if the cookie looks like a proto */
796 if (ndo->ndo_eflag &&
797 EXTRACT_16BITS(&l2info.cookie) != PPP_OSI &&
798 EXTRACT_16BITS(&l2info.cookie) != (PPP_ADDRESS << 8 | PPP_CONTROL))
799 ND_PRINT((ndo, "Bundle-ID %u: ", l2info.bundle));
800
801 p+=l2info.header_len;
802
803 /* first try the LSQ protos */
804 switch(l2info.proto) {
805 case JUNIPER_LSQ_L3_PROTO_IPV4:
806 /* IP traffic going to the RE would not have a cookie
807 * -> this must be incoming IS-IS over PPP
808 */
809 if (l2info.cookie[4] == (JUNIPER_LSQ_COOKIE_RE|JUNIPER_LSQ_COOKIE_DIR))
810 ppp_print(ndo, p, l2info.length);
811 else
812 ip_print(ndo, p, l2info.length);
813 return l2info.header_len;
814 case JUNIPER_LSQ_L3_PROTO_IPV6:
815 ip6_print(ndo, p,l2info.length);
816 return l2info.header_len;
817 case JUNIPER_LSQ_L3_PROTO_MPLS:
818 mpls_print(ndo, p, l2info.length);
819 return l2info.header_len;
820 case JUNIPER_LSQ_L3_PROTO_ISO:
821 isoclns_print(ndo, p, l2info.length);
822 return l2info.header_len;
823 default:
824 break;
825 }
826
827 /* zero length cookie ? */
828 switch (EXTRACT_16BITS(&l2info.cookie)) {
829 case PPP_OSI:
830 ppp_print(ndo, p - 2, l2info.length + 2);
831 break;
832 case (PPP_ADDRESS << 8 | PPP_CONTROL): /* fall through */
833 default:
834 ppp_print(ndo, p, l2info.length);
835 break;
836 }
837
838 return l2info.header_len;
839 }
840 #endif
841
842
843 #ifdef DLT_JUNIPER_MFR
844 u_int
845 juniper_mfr_print(netdissect_options *ndo,
846 const struct pcap_pkthdr *h, register const u_char *p)
847 {
848 struct juniper_l2info_t l2info;
849
850 memset(&l2info, 0, sizeof(l2info));
851 l2info.pictype = DLT_JUNIPER_MFR;
852 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
853 return l2info.header_len;
854
855 p+=l2info.header_len;
856
857 /* child-link ? */
858 if (l2info.cookie_len == 0) {
859 mfr_print(ndo, p, l2info.length);
860 return l2info.header_len;
861 }
862
863 /* first try the LSQ protos */
864 if (l2info.cookie_len == AS_PIC_COOKIE_LEN) {
865 switch(l2info.proto) {
866 case JUNIPER_LSQ_L3_PROTO_IPV4:
867 ip_print(ndo, p, l2info.length);
868 return l2info.header_len;
869 case JUNIPER_LSQ_L3_PROTO_IPV6:
870 ip6_print(ndo, p,l2info.length);
871 return l2info.header_len;
872 case JUNIPER_LSQ_L3_PROTO_MPLS:
873 mpls_print(ndo, p, l2info.length);
874 return l2info.header_len;
875 case JUNIPER_LSQ_L3_PROTO_ISO:
876 isoclns_print(ndo, p, l2info.length);
877 return l2info.header_len;
878 default:
879 break;
880 }
881 return l2info.header_len;
882 }
883
884 /* suppress Bundle-ID if frame was captured on a child-link */
885 if (ndo->ndo_eflag && EXTRACT_32BITS(l2info.cookie) != 1)
886 ND_PRINT((ndo, "Bundle-ID %u, ", l2info.bundle));
887 switch (l2info.proto) {
888 case (LLCSAP_ISONS<<8 | LLCSAP_ISONS):
889 isoclns_print(ndo, p + 1, l2info.length - 1);
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(ndo, p - 1, l2info.length + 1);
896 break;
897 default:
898 ND_PRINT((ndo, "unknown protocol 0x%04x, length %u", l2info.proto, l2info.length));
899 }
900
901 return l2info.header_len;
902 }
903 #endif
904
905 #ifdef DLT_JUNIPER_MLFR
906 u_int
907 juniper_mlfr_print(netdissect_options *ndo,
908 const struct pcap_pkthdr *h, register const u_char *p)
909 {
910 struct juniper_l2info_t l2info;
911
912 l2info.pictype = DLT_JUNIPER_MLFR;
913 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
914 return l2info.header_len;
915
916 p+=l2info.header_len;
917
918 /* suppress Bundle-ID if frame was captured on a child-link */
919 if (ndo->ndo_eflag && EXTRACT_32BITS(l2info.cookie) != 1)
920 ND_PRINT((ndo, "Bundle-ID %u, ", l2info.bundle));
921 switch (l2info.proto) {
922 case (LLC_UI):
923 case (LLC_UI<<8):
924 isoclns_print(ndo, p, l2info.length);
925 break;
926 case (LLC_UI<<8 | NLPID_Q933):
927 case (LLC_UI<<8 | NLPID_IP):
928 case (LLC_UI<<8 | NLPID_IP6):
929 /* pass IP{4,6} to the OSI layer for proper link-layer printing */
930 isoclns_print(ndo, p - 1, l2info.length + 1);
931 break;
932 default:
933 ND_PRINT((ndo, "unknown protocol 0x%04x, length %u", l2info.proto, l2info.length));
934 }
935
936 return l2info.header_len;
937 }
938 #endif
939
940 /*
941 * ATM1 PIC cookie format
942 *
943 * +-----+-------------------------+-------------------------------+
944 * |fmtid| vc index | channel ID |
945 * +-----+-------------------------+-------------------------------+
946 */
947
948 #ifdef DLT_JUNIPER_ATM1
949 u_int
950 juniper_atm1_print(netdissect_options *ndo,
951 const struct pcap_pkthdr *h, register const u_char *p)
952 {
953 int llc_hdrlen;
954
955 struct juniper_l2info_t l2info;
956
957 l2info.pictype = DLT_JUNIPER_ATM1;
958 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
959 return l2info.header_len;
960
961 p+=l2info.header_len;
962
963 if (l2info.cookie[0] == 0x80) { /* OAM cell ? */
964 oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC);
965 return l2info.header_len;
966 }
967
968 ND_TCHECK2(p[0], 3);
969 if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */
970 EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */
971
972 llc_hdrlen = llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
973 if (llc_hdrlen > 0)
974 return l2info.header_len;
975 }
976
977 if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */
978 isoclns_print(ndo, p + 1, l2info.length - 1);
979 /* FIXME check if frame was recognized */
980 return l2info.header_len;
981 }
982
983 if (ip_heuristic_guess(ndo, p, l2info.length) != 0) /* last try - vcmux encaps ? */
984 return l2info.header_len;
985
986 return l2info.header_len;
987
988 trunc:
989 ND_PRINT((ndo, "[|juniper_atm1]"));
990 return l2info.header_len;
991 }
992 #endif
993
994 /*
995 * ATM2 PIC cookie format
996 *
997 * +-------------------------------+---------+---+-----+-----------+
998 * | channel ID | reserv |AAL| CCRQ| gap cnt |
999 * +-------------------------------+---------+---+-----+-----------+
1000 */
1001
1002 #ifdef DLT_JUNIPER_ATM2
1003 u_int
1004 juniper_atm2_print(netdissect_options *ndo,
1005 const struct pcap_pkthdr *h, register const u_char *p)
1006 {
1007 int llc_hdrlen;
1008
1009 struct juniper_l2info_t l2info;
1010
1011 l2info.pictype = DLT_JUNIPER_ATM2;
1012 if (juniper_parse_header(ndo, p, h, &l2info) == 0)
1013 return l2info.header_len;
1014
1015 p+=l2info.header_len;
1016
1017 if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { /* OAM cell ? */
1018 oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC);
1019 return l2info.header_len;
1020 }
1021
1022 ND_TCHECK2(p[0], 3);
1023 if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */
1024 EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */
1025
1026 llc_hdrlen = llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
1027 if (llc_hdrlen > 0)
1028 return l2info.header_len;
1029 }
1030
1031 if (l2info.direction != JUNIPER_BPF_PKT_IN && /* ether-over-1483 encaps ? */
1032 (EXTRACT_32BITS(l2info.cookie) & ATM2_GAP_COUNT_MASK)) {
1033 ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
1034 return l2info.header_len;
1035 }
1036
1037 if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */
1038 isoclns_print(ndo, p + 1, l2info.length - 1);
1039 /* FIXME check if frame was recognized */
1040 return l2info.header_len;
1041 }
1042
1043 if(juniper_ppp_heuristic_guess(ndo, p, l2info.length) != 0) /* PPPoA vcmux encaps ? */
1044 return l2info.header_len;
1045
1046 if (ip_heuristic_guess(ndo, p, l2info.length) != 0) /* last try - vcmux encaps ? */
1047 return l2info.header_len;
1048
1049 return l2info.header_len;
1050
1051 trunc:
1052 ND_PRINT((ndo, "[|juniper_atm2]"));
1053 return l2info.header_len;
1054 }
1055 #endif
1056
1057
1058 /* try to guess, based on all PPP protos that are supported in
1059 * a juniper router if the payload data is encapsulated using PPP */
1060 static int
1061 juniper_ppp_heuristic_guess(netdissect_options *ndo,
1062 register const u_char *p, u_int length)
1063 {
1064 switch(EXTRACT_16BITS(p)) {
1065 case PPP_IP :
1066 case PPP_OSI :
1067 case PPP_MPLS_UCAST :
1068 case PPP_MPLS_MCAST :
1069 case PPP_IPCP :
1070 case PPP_OSICP :
1071 case PPP_MPLSCP :
1072 case PPP_LCP :
1073 case PPP_PAP :
1074 case PPP_CHAP :
1075 case PPP_ML :
1076 case PPP_IPV6 :
1077 case PPP_IPV6CP :
1078 ppp_print(ndo, p, length);
1079 break;
1080
1081 default:
1082 return 0; /* did not find a ppp header */
1083 break;
1084 }
1085 return 1; /* we printed a ppp packet */
1086 }
1087
1088 static int
1089 ip_heuristic_guess(netdissect_options *ndo,
1090 register const u_char *p, u_int length)
1091 {
1092 switch(p[0]) {
1093 case 0x45:
1094 case 0x46:
1095 case 0x47:
1096 case 0x48:
1097 case 0x49:
1098 case 0x4a:
1099 case 0x4b:
1100 case 0x4c:
1101 case 0x4d:
1102 case 0x4e:
1103 case 0x4f:
1104 ip_print(ndo, p, length);
1105 break;
1106 case 0x60:
1107 case 0x61:
1108 case 0x62:
1109 case 0x63:
1110 case 0x64:
1111 case 0x65:
1112 case 0x66:
1113 case 0x67:
1114 case 0x68:
1115 case 0x69:
1116 case 0x6a:
1117 case 0x6b:
1118 case 0x6c:
1119 case 0x6d:
1120 case 0x6e:
1121 case 0x6f:
1122 ip6_print(ndo, p, length);
1123 break;
1124 default:
1125 return 0; /* did not find a ip header */
1126 break;
1127 }
1128 return 1; /* we printed an v4/v6 packet */
1129 }
1130
1131 static int
1132 juniper_read_tlv_value(const u_char *p, u_int tlv_type, u_int tlv_len)
1133 {
1134 int tlv_value;
1135
1136 /* TLVs < 128 are little endian encoded */
1137 if (tlv_type < 128) {
1138 switch (tlv_len) {
1139 case 1:
1140 tlv_value = *p;
1141 break;
1142 case 2:
1143 tlv_value = EXTRACT_LE_16BITS(p);
1144 break;
1145 case 3:
1146 tlv_value = EXTRACT_LE_24BITS(p);
1147 break;
1148 case 4:
1149 tlv_value = EXTRACT_LE_32BITS(p);
1150 break;
1151 default:
1152 tlv_value = -1;
1153 break;
1154 }
1155 } else {
1156 /* TLVs >= 128 are big endian encoded */
1157 switch (tlv_len) {
1158 case 1:
1159 tlv_value = *p;
1160 break;
1161 case 2:
1162 tlv_value = EXTRACT_16BITS(p);
1163 break;
1164 case 3:
1165 tlv_value = EXTRACT_24BITS(p);
1166 break;
1167 case 4:
1168 tlv_value = EXTRACT_32BITS(p);
1169 break;
1170 default:
1171 tlv_value = -1;
1172 break;
1173 }
1174 }
1175 return tlv_value;
1176 }
1177
1178 static int
1179 juniper_parse_header(netdissect_options *ndo,
1180 const u_char *p, const struct pcap_pkthdr *h, struct juniper_l2info_t *l2info)
1181 {
1182 const struct juniper_cookie_table_t *lp = juniper_cookie_table;
1183 u_int idx, jnx_ext_len, jnx_header_len = 0;
1184 uint8_t tlv_type,tlv_len;
1185 uint32_t control_word;
1186 int tlv_value;
1187 const u_char *tptr;
1188
1189
1190 l2info->header_len = 0;
1191 l2info->cookie_len = 0;
1192 l2info->proto = 0;
1193
1194
1195 l2info->length = h->len;
1196 l2info->caplen = h->caplen;
1197 ND_TCHECK2(p[0], 4);
1198 l2info->flags = p[3];
1199 l2info->direction = p[3]&JUNIPER_BPF_PKT_IN;
1200
1201 if (EXTRACT_24BITS(p) != JUNIPER_MGC_NUMBER) { /* magic number found ? */
1202 ND_PRINT((ndo, "no magic-number found!"));
1203 return 0;
1204 }
1205
1206 if (ndo->ndo_eflag) /* print direction */
1207 ND_PRINT((ndo, "%3s ", tok2str(juniper_direction_values, "---", l2info->direction)));
1208
1209 /* magic number + flags */
1210 jnx_header_len = 4;
1211
1212 if (ndo->ndo_vflag > 1)
1213 ND_PRINT((ndo, "\n\tJuniper PCAP Flags [%s]",
1214 bittok2str(jnx_flag_values, "none", l2info->flags)));
1215
1216 /* extensions present ? - calculate how much bytes to skip */
1217 if ((l2info->flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) {
1218
1219 tptr = p+jnx_header_len;
1220
1221 /* ok to read extension length ? */
1222 ND_TCHECK2(tptr[0], 2);
1223 jnx_ext_len = EXTRACT_16BITS(tptr);
1224 jnx_header_len += 2;
1225 tptr +=2;
1226
1227 /* nail up the total length -
1228 * just in case something goes wrong
1229 * with TLV parsing */
1230 jnx_header_len += jnx_ext_len;
1231
1232 if (ndo->ndo_vflag > 1)
1233 ND_PRINT((ndo, ", PCAP Extension(s) total length %u", jnx_ext_len));
1234
1235 ND_TCHECK2(tptr[0], jnx_ext_len);
1236 while (jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD) {
1237 tlv_type = *(tptr++);
1238 tlv_len = *(tptr++);
1239 tlv_value = 0;
1240
1241 /* sanity checks */
1242 if (tlv_type == 0 || tlv_len == 0)
1243 break;
1244 if (tlv_len+JUNIPER_EXT_TLV_OVERHEAD > jnx_ext_len)
1245 goto trunc;
1246
1247 if (ndo->ndo_vflag > 1)
1248 ND_PRINT((ndo, "\n\t %s Extension TLV #%u, length %u, value ",
1249 tok2str(jnx_ext_tlv_values,"Unknown",tlv_type),
1250 tlv_type,
1251 tlv_len));
1252
1253 tlv_value = juniper_read_tlv_value(tptr, tlv_type, tlv_len);
1254 switch (tlv_type) {
1255 case JUNIPER_EXT_TLV_IFD_NAME:
1256 /* FIXME */
1257 break;
1258 case JUNIPER_EXT_TLV_IFD_MEDIATYPE:
1259 case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE:
1260 if (tlv_value != -1) {
1261 if (ndo->ndo_vflag > 1)
1262 ND_PRINT((ndo, "%s (%u)",
1263 tok2str(juniper_ifmt_values, "Unknown", tlv_value),
1264 tlv_value));
1265 }
1266 break;
1267 case JUNIPER_EXT_TLV_IFL_ENCAPS:
1268 case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS:
1269 if (tlv_value != -1) {
1270 if (ndo->ndo_vflag > 1)
1271 ND_PRINT((ndo, "%s (%u)",
1272 tok2str(juniper_ifle_values, "Unknown", tlv_value),
1273 tlv_value));
1274 }
1275 break;
1276 case JUNIPER_EXT_TLV_IFL_IDX: /* fall through */
1277 case JUNIPER_EXT_TLV_IFL_UNIT:
1278 case JUNIPER_EXT_TLV_IFD_IDX:
1279 default:
1280 if (tlv_value != -1) {
1281 if (ndo->ndo_vflag > 1)
1282 ND_PRINT((ndo, "%u", tlv_value));
1283 }
1284 break;
1285 }
1286
1287 tptr+=tlv_len;
1288 jnx_ext_len -= tlv_len+JUNIPER_EXT_TLV_OVERHEAD;
1289 }
1290
1291 if (ndo->ndo_vflag > 1)
1292 ND_PRINT((ndo, "\n\t-----original packet-----\n\t"));
1293 }
1294
1295 if ((l2info->flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) {
1296 if (ndo->ndo_eflag)
1297 ND_PRINT((ndo, "no-L2-hdr, "));
1298
1299 /* there is no link-layer present -
1300 * perform the v4/v6 heuristics
1301 * to figure out what it is
1302 */
1303 ND_TCHECK2(p[jnx_header_len + 4], 1);
1304 if (ip_heuristic_guess(ndo, p + jnx_header_len + 4,
1305 l2info->length - (jnx_header_len + 4)) == 0)
1306 ND_PRINT((ndo, "no IP-hdr found!"));
1307
1308 l2info->header_len=jnx_header_len+4;
1309 return 0; /* stop parsing the output further */
1310
1311 }
1312 l2info->header_len = jnx_header_len;
1313 p+=l2info->header_len;
1314 l2info->length -= l2info->header_len;
1315 l2info->caplen -= l2info->header_len;
1316
1317 /* search through the cookie table and copy values matching for our PIC type */
1318 ND_TCHECK(p[0]);
1319 while (lp->s != NULL) {
1320 if (lp->pictype == l2info->pictype) {
1321
1322 l2info->cookie_len += lp->cookie_len;
1323
1324 switch (p[0]) {
1325 case LS_COOKIE_ID:
1326 l2info->cookie_type = LS_COOKIE_ID;
1327 l2info->cookie_len += 2;
1328 break;
1329 case AS_COOKIE_ID:
1330 l2info->cookie_type = AS_COOKIE_ID;
1331 l2info->cookie_len = 8;
1332 break;
1333
1334 default:
1335 l2info->bundle = l2info->cookie[0];
1336 break;
1337 }
1338
1339
1340 #ifdef DLT_JUNIPER_MFR
1341 /* MFR child links don't carry cookies */
1342 if (l2info->pictype == DLT_JUNIPER_MFR &&
1343 (p[0] & MFR_BE_MASK) == MFR_BE_MASK) {
1344 l2info->cookie_len = 0;
1345 }
1346 #endif
1347
1348 l2info->header_len += l2info->cookie_len;
1349 l2info->length -= l2info->cookie_len;
1350 l2info->caplen -= l2info->cookie_len;
1351
1352 if (ndo->ndo_eflag)
1353 ND_PRINT((ndo, "%s-PIC, cookie-len %u",
1354 lp->s,
1355 l2info->cookie_len));
1356
1357 if (l2info->cookie_len > 0) {
1358 ND_TCHECK2(p[0], l2info->cookie_len);
1359 if (ndo->ndo_eflag)
1360 ND_PRINT((ndo, ", cookie 0x"));
1361 for (idx = 0; idx < l2info->cookie_len; idx++) {
1362 l2info->cookie[idx] = p[idx]; /* copy cookie data */
1363 if (ndo->ndo_eflag) ND_PRINT((ndo, "%02x", p[idx]));
1364 }
1365 }
1366
1367 if (ndo->ndo_eflag) ND_PRINT((ndo, ": ")); /* print demarc b/w L2/L3*/
1368
1369
1370 ND_TCHECK_16BITS(p+l2info->cookie_len);
1371 l2info->proto = EXTRACT_16BITS(p+l2info->cookie_len);
1372 break;
1373 }
1374 ++lp;
1375 }
1376 p+=l2info->cookie_len;
1377
1378 /* DLT_ specific parsing */
1379 switch(l2info->pictype) {
1380 #ifdef DLT_JUNIPER_MLPPP
1381 case DLT_JUNIPER_MLPPP:
1382 switch (l2info->cookie_type) {
1383 case LS_COOKIE_ID:
1384 l2info->bundle = l2info->cookie[1];
1385 break;
1386 case AS_COOKIE_ID:
1387 l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
1388 l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
1389 break;
1390 default:
1391 l2info->bundle = l2info->cookie[0];
1392 break;
1393 }
1394 break;
1395 #endif
1396 #ifdef DLT_JUNIPER_MLFR
1397 case DLT_JUNIPER_MLFR:
1398 switch (l2info->cookie_type) {
1399 case LS_COOKIE_ID:
1400 ND_TCHECK2(p[0], 2);
1401 l2info->bundle = l2info->cookie[1];
1402 l2info->proto = EXTRACT_16BITS(p);
1403 l2info->header_len += 2;
1404 l2info->length -= 2;
1405 l2info->caplen -= 2;
1406 break;
1407 case AS_COOKIE_ID:
1408 l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
1409 l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
1410 break;
1411 default:
1412 l2info->bundle = l2info->cookie[0];
1413 l2info->header_len += 2;
1414 l2info->length -= 2;
1415 l2info->caplen -= 2;
1416 break;
1417 }
1418 break;
1419 #endif
1420 #ifdef DLT_JUNIPER_MFR
1421 case DLT_JUNIPER_MFR:
1422 switch (l2info->cookie_type) {
1423 case LS_COOKIE_ID:
1424 ND_TCHECK2(p[0], 2);
1425 l2info->bundle = l2info->cookie[1];
1426 l2info->proto = EXTRACT_16BITS(p);
1427 l2info->header_len += 2;
1428 l2info->length -= 2;
1429 l2info->caplen -= 2;
1430 break;
1431 case AS_COOKIE_ID:
1432 l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
1433 l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
1434 break;
1435 default:
1436 l2info->bundle = l2info->cookie[0];
1437 break;
1438 }
1439 break;
1440 #endif
1441 #ifdef DLT_JUNIPER_ATM2
1442 case DLT_JUNIPER_ATM2:
1443 ND_TCHECK2(p[0], 4);
1444 /* ATM cell relay control word present ? */
1445 if (l2info->cookie[7] & ATM2_PKT_TYPE_MASK) {
1446 control_word = EXTRACT_32BITS(p);
1447 /* some control word heuristics */
1448 switch(control_word) {
1449 case 0: /* zero control word */
1450 case 0x08000000: /* < JUNOS 7.4 control-word */
1451 case 0x08380000: /* cntl word plus cell length (56) >= JUNOS 7.4*/
1452 l2info->header_len += 4;
1453 break;
1454 default:
1455 break;
1456 }
1457
1458 if (ndo->ndo_eflag)
1459 ND_PRINT((ndo, "control-word 0x%08x ", control_word));
1460 }
1461 break;
1462 #endif
1463 #ifdef DLT_JUNIPER_GGSN
1464 case DLT_JUNIPER_GGSN:
1465 break;
1466 #endif
1467 #ifdef DLT_JUNIPER_ATM1
1468 case DLT_JUNIPER_ATM1:
1469 break;
1470 #endif
1471 #ifdef DLT_JUNIPER_PPP
1472 case DLT_JUNIPER_PPP:
1473 break;
1474 #endif
1475 #ifdef DLT_JUNIPER_CHDLC
1476 case DLT_JUNIPER_CHDLC:
1477 break;
1478 #endif
1479 #ifdef DLT_JUNIPER_ETHER
1480 case DLT_JUNIPER_ETHER:
1481 break;
1482 #endif
1483 #ifdef DLT_JUNIPER_FRELAY
1484 case DLT_JUNIPER_FRELAY:
1485 break;
1486 #endif
1487
1488 default:
1489 ND_PRINT((ndo, "Unknown Juniper DLT_ type %u: ", l2info->pictype));
1490 break;
1491 }
1492
1493 if (ndo->ndo_eflag > 1)
1494 ND_PRINT((ndo, "hlen %u, proto 0x%04x, ", l2info->header_len, l2info->proto));
1495
1496 return 1; /* everything went ok so far. continue parsing */
1497 trunc:
1498 ND_PRINT((ndo, "[|juniper_hdr], length %u", h->len));
1499 return 0;
1500 }
1501
1502
1503 /*
1504 * Local Variables:
1505 * c-style: whitesmith
1506 * c-basic-offset: 4
1507 * End:
1508 */
Unleashed OS