1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
|
/*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __included_ikev2_priv_h__
#define __included_ikev2_priv_h__
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <plugins/ikev2/ikev2.h>
#include <vppinfra/hash.h>
#include <vppinfra/elog.h>
#include <vppinfra/error.h>
#include <openssl/rand.h>
#include <openssl/dh.h>
#include <openssl/hmac.h>
#include <openssl/evp.h>
#define foreach_ikev2_log_level \
_(0x00, LOG_NONE) \
_(0x01, LOG_ERROR) \
_(0x02, LOG_WARNING) \
_(0x03, LOG_INFO) \
_(0x04, LOG_DEBUG) \
_(0x05, LOG_DETAIL) \
typedef enum ikev2_log_level_t_
{
#define _(n,f) IKEV2_##f = n,
foreach_ikev2_log_level
#undef _
IKEV2_LOG_MAX
} ikev2_log_level_t;
/* dataplane logging */
#define _ikev2_elog(_level, _msg) \
do { \
ikev2_main_t *km = &ikev2_main; \
if (PREDICT_FALSE (km->log_level >= _level)) \
{ \
ELOG_TYPE_DECLARE (e) = \
{ \
.format = "ikev2 " _msg, \
.format_args = "", \
}; \
ELOG_DATA (&vlib_global_main.elog_main, e); \
} \
} while (0)
#define ikev2_elog_sa_state(_format, _ispi) \
do { \
ikev2_main_t *km = &ikev2_main; \
if (PREDICT_FALSE (km->log_level >= IKEV2_LOG_DEBUG)) \
{ \
ELOG_TYPE_DECLARE (e) = \
{ \
.format = "ikev2: " _format, \
.format_args = "i8", \
}; \
CLIB_PACKED(struct \
{ \
u64 ispi; \
}) *ed; \
ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
ed->ispi = _ispi; \
} \
} while (0) \
#define ikev2_elog_exchange(_format, _ispi, _rspi, _addr) \
do { \
ikev2_main_t *km = &ikev2_main; \
if (PREDICT_FALSE (km->log_level >= IKEV2_LOG_DEBUG)) \
{ \
ELOG_TYPE_DECLARE (e) = \
{ \
.format = "ikev2: " _format, \
.format_args = "i8i8i1i1i1i1", \
}; \
CLIB_PACKED(struct \
{ \
u64 ispi; \
u64 rspi; \
u8 oct1; \
u8 oct2; \
u8 oct3; \
u8 oct4; \
}) *ed; \
ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
ed->ispi = _ispi; \
ed->rspi = _rspi; \
ed->oct4 = (_addr) >> 24; \
ed->oct3 = (_addr) >> 16; \
ed->oct2 = (_addr) >> 8; \
ed->oct1 = (_addr); \
} \
} while (0) \
#define ikev2_elog_uint(_level, _format, _val) \
do { \
ikev2_main_t *km = &ikev2_main; \
if (PREDICT_FALSE (km->log_level >= _level)) \
{ \
ELOG_TYPE_DECLARE (e) = \
{ \
.format = "ikev2: " _format, \
.format_args = "i8", \
}; \
CLIB_PACKED(struct \
{ \
u64 val; \
}) *ed; \
ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
ed->val = _val; \
} \
} while (0)
#define ikev2_elog_uint_peers(_level, _format, _val, _ip1, _ip2) \
do { \
ikev2_main_t *km = &ikev2_main; \
if (PREDICT_FALSE (km->log_level >= _level)) \
{ \
ELOG_TYPE_DECLARE (e) = \
{ \
.format = "ikev2: " _format, \
.format_args = "i8i1i1i1i1i1i1i1i1", \
}; \
CLIB_PACKED(struct { \
u64 val; \
u8 i11; u8 i12; u8 i13; u8 i14; \
u8 i21; u8 i22; u8 i23; u8 i24; }) *ed; \
ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
ed->val = _val; \
ed->i14 = (_ip1) >> 24; \
ed->i13 = (_ip1) >> 16; \
ed->i12 = (_ip1) >> 8; \
ed->i11 = (_ip1); \
ed->i24 = (_ip2) >> 24; \
ed->i23 = (_ip2) >> 16; \
ed->i22 = (_ip2) >> 8; \
ed->i21 = (_ip2); \
} \
} while (0)
#define ikev2_elog_peers(_level, _format, _ip1, _ip2) \
do { \
ikev2_main_t *km = &ikev2_main; \
if (PREDICT_FALSE (km->log_level >= _level)) \
{ \
ELOG_TYPE_DECLARE (e) = \
{ \
.format = "ikev2: " _format, \
.format_args = "i1i1i1i1i1i1i1i1", \
}; \
CLIB_PACKED(struct { \
u8 i11; u8 i12; u8 i13; u8 i14; \
u8 i21; u8 i22; u8 i23; u8 i24; }) *ed; \
ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
ed->i14 = (_ip1) >> 24; \
ed->i13 = (_ip1) >> 16; \
ed->i12 = (_ip1) >> 8; \
ed->i11 = (_ip1); \
ed->i24 = (_ip2) >> 24; \
ed->i23 = (_ip2) >> 16; \
ed->i22 = (_ip2) >> 8; \
ed->i21 = (_ip2); \
} \
} while (0)
#define ikev2_elog_error(_msg) \
_ikev2_elog(IKEV2_LOG_ERROR, "[error] " _msg)
#define ikev2_elog_warning(_msg) \
_ikev2_elog(IKEV2_LOG_WARNING, "[warning] " _msg)
#define ikev2_elog_debug(_msg) \
_ikev2_elog(IKEV2_LOG_DEBUG, "[debug] " _msg)
#define ikev2_elog_detail(_msg) \
_ikev2_elog(IKEV2_LOG_DETAIL, "[detail] " _msg)
/* logging for main thread */
#define ikev2_log_error(...) \
vlib_log(VLIB_LOG_LEVEL_ERR, ikev2_main.log_class, __VA_ARGS__)
#define ikev2_log_warning(...) \
vlib_log(VLIB_LOG_LEVEL_WARNING, ikev2_main.log_class, __VA_ARGS__)
#define ikev2_log_debug(...) \
vlib_log(VLIB_LOG_LEVEL_DEBUG, ikev2_main.log_class, __VA_ARGS__)
typedef enum
{
IKEV2_STATE_UNKNOWN,
IKEV2_STATE_SA_INIT,
IKEV2_STATE_DELETED,
IKEV2_STATE_AUTH_FAILED,
IKEV2_STATE_AUTHENTICATED,
IKEV2_STATE_NOTIFY_AND_DELETE,
IKEV2_STATE_TS_UNACCEPTABLE,
IKEV2_STATE_NO_PROPOSAL_CHOSEN,
} ikev2_state_t;
typedef struct
{
ikev2_auth_method_t method:8;
u8 *data;
u8 hex; /* hex encoding of the shared secret */
EVP_PKEY *key;
} ikev2_auth_t;
typedef enum
{
IKEV2_DH_GROUP_MODP = 0,
IKEV2_DH_GROUP_ECP = 1,
} ikev2_dh_group_t;
typedef struct
{
ikev2_transform_type_t type;
union
{
u16 transform_id;
ikev2_transform_encr_type_t encr_type:16;
ikev2_transform_prf_type_t prf_type:16;
ikev2_transform_integ_type_t integ_type:16;
ikev2_transform_dh_type_t dh_type:16;
ikev2_transform_esn_type_t esn_type:16;
};
u8 *attrs;
u16 key_len;
u16 key_trunc;
u16 block_size;
u8 dh_group;
int nid;
const char *dh_p;
const char *dh_g;
const void *md;
const void *cipher;
} ikev2_sa_transform_t;
typedef struct
{
u8 proposal_num;
ikev2_protocol_id_t protocol_id:8;
u32 spi;
ikev2_sa_transform_t *transforms;
} ikev2_sa_proposal_t;
typedef struct
{
u8 ts_type;
u8 protocol_id;
u16 selector_len;
u16 start_port;
u16 end_port;
ip4_address_t start_addr;
ip4_address_t end_addr;
} ikev2_ts_t;
typedef struct
{
u32 sw_if_index;
ip4_address_t ip4;
} ikev2_responder_t;
typedef struct
{
ikev2_transform_encr_type_t crypto_alg;
ikev2_transform_integ_type_t integ_alg;
ikev2_transform_dh_type_t dh_type;
u32 crypto_key_size;
} ikev2_transforms_set;
typedef struct
{
ikev2_id_type_t type:8;
u8 *data;
} ikev2_id_t;
typedef struct
{
/* sa proposals vectors */
ikev2_sa_proposal_t *i_proposals;
ikev2_sa_proposal_t *r_proposals;
/* Traffic Selectors */
ikev2_ts_t *tsi;
ikev2_ts_t *tsr;
/* keys */
u8 *sk_ai;
u8 *sk_ar;
u8 *sk_ei;
u8 *sk_er;
u32 salt_ei;
u32 salt_er;
/* installed data */
u32 local_sa_id;
u32 remote_sa_id;
/* lifetime data */
f64 time_to_expiration;
u8 is_expired;
i8 rekey_retries;
} ikev2_child_sa_t;
typedef struct
{
u8 protocol_id;
u32 spi; /*for ESP and AH SPI size is 4, for IKE size is 0 */
} ikev2_delete_t;
typedef struct
{
u8 protocol_id;
u32 spi;
u32 ispi;
ikev2_sa_proposal_t *i_proposal;
ikev2_sa_proposal_t *r_proposal;
ikev2_ts_t *tsi;
ikev2_ts_t *tsr;
} ikev2_rekey_t;
typedef struct
{
u16 msg_type;
u8 protocol_id;
u32 spi;
u8 *data;
} ikev2_notify_t;
typedef struct
{
u8 *name;
ikev2_auth_t auth;
ikev2_id_t loc_id;
ikev2_id_t rem_id;
ikev2_ts_t loc_ts;
ikev2_ts_t rem_ts;
ikev2_responder_t responder;
ikev2_transforms_set ike_ts;
ikev2_transforms_set esp_ts;
u64 lifetime;
u64 lifetime_maxdata;
u32 lifetime_jitter;
u32 handover;
u16 ipsec_over_udp_port;
u32 tun_itf;
u8 udp_encap;
} ikev2_profile_t;
typedef struct
{
ikev2_state_t state;
u8 unsupported_cp;
u8 initial_contact;
ip4_address_t iaddr;
ip4_address_t raddr;
u64 ispi;
u64 rspi;
u8 *i_nonce;
u8 *r_nonce;
/* DH data */
u16 dh_group;
u8 *dh_shared_key;
u8 *dh_private_key;
u8 *i_dh_data;
u8 *r_dh_data;
/* sa proposals vectors */
ikev2_sa_proposal_t *i_proposals;
ikev2_sa_proposal_t *r_proposals;
/* keys */
u8 *sk_d;
u8 *sk_ai;
u8 *sk_ar;
u8 *sk_ei;
u8 *sk_er;
u8 *sk_pi;
u8 *sk_pr;
/* auth */
ikev2_auth_t i_auth;
ikev2_auth_t r_auth;
/* ID */
ikev2_id_t i_id;
ikev2_id_t r_id;
/* pending deletes */
ikev2_delete_t *del;
/* pending rekeyings */
ikev2_rekey_t *rekey;
/* packet data */
u8 *last_sa_init_req_packet_data;
u8 *last_sa_init_res_packet_data;
/* retransmit */
u32 last_msg_id;
u8 *last_res_packet_data;
u8 is_initiator;
u32 last_init_msg_id;
u32 profile_index;
u8 is_tun_itf_set;
u32 tun_itf;
u8 udp_encap;
u16 ipsec_over_udp_port;
f64 old_id_expiration;
u32 current_remote_id_mask;
u32 old_remote_id;
u8 old_remote_id_present;
u8 init_response_received;
ikev2_child_sa_t *childs;
u8 liveness_retries;
f64 liveness_period_check;
u16 dst_port;
u32 sw_if_index;
/* is NAT traversal mode */
u8 natt;
u8 keys_generated;
} ikev2_sa_t;
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/* pool of IKEv2 Security Associations */
ikev2_sa_t *sas;
/* hash */
uword *sa_by_rspi;
EVP_CIPHER_CTX *evp_ctx;
HMAC_CTX *hmac_ctx;
#if OPENSSL_VERSION_NUMBER < 0x10100000L
HMAC_CTX _hmac_ctx;
EVP_CIPHER_CTX _evp_ctx;
#endif
} ikev2_main_per_thread_data_t;
typedef struct
{
/* pool of IKEv2 profiles */
ikev2_profile_t *profiles;
/* vector of supported transform types */
ikev2_sa_transform_t *supported_transforms;
/* hash */
mhash_t profile_index_by_name;
/* local private key */
EVP_PKEY *pkey;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
/* pool of IKEv2 Security Associations created in initiator mode */
ikev2_sa_t *sais;
/* hash */
uword *sa_by_ispi;
ikev2_main_per_thread_data_t *per_thread_data;
/* interface indices managed by IKE */
uword *sw_if_indices;
/* API message ID base */
u16 msg_id_base;
/* log class used for main thread */
vlib_log_class_t log_class;
/* logging level */
ikev2_log_level_t log_level;
/* custom ipsec-over-udp ports managed by ike */
uword *udp_ports;
/* how often a liveness check will be performed */
u32 liveness_period;
/* max number of retries before considering peer dead */
u32 liveness_max_retries;
} ikev2_main_t;
extern ikev2_main_t ikev2_main;
void ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v);
ikev2_sa_transform_t *ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p,
ikev2_transform_type_t type);
/* ikev2_crypto.c */
v8 *ikev2_calc_prf (ikev2_sa_transform_t * tr, v8 * key, v8 * data);
u8 *ikev2_calc_prfplus (ikev2_sa_transform_t * tr, u8 * key, u8 * seed,
int len);
v8 *ikev2_calc_integr (ikev2_sa_transform_t * tr, v8 * key, u8 * data,
int len);
int ikev2_decrypt_data (ikev2_main_per_thread_data_t * ptd, ikev2_sa_t * sa,
ikev2_sa_transform_t * tr_encr, u8 * data, int len,
u32 * out_len);
int ikev2_encrypt_data (ikev2_main_per_thread_data_t * ptd, ikev2_sa_t * sa,
ikev2_sa_transform_t * tr_encr, v8 * src, u8 * dst);
int ikev2_encrypt_aead_data (ikev2_main_per_thread_data_t * ptd,
ikev2_sa_t * sa, ikev2_sa_transform_t * tr_encr,
v8 * src, u8 * dst, u8 * aad,
u32 aad_len, u8 * tag);
int ikev2_decrypt_aead_data (ikev2_main_per_thread_data_t * ptd,
ikev2_sa_t * sa, ikev2_sa_transform_t * tr_encr,
u8 * data, int data_len, u8 * aad, u32 aad_len,
u8 * tag, u32 * out_len);
void ikev2_generate_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t);
void ikev2_complete_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t);
int ikev2_verify_sign (EVP_PKEY * pkey, u8 * sigbuf, u8 * data);
u8 *ikev2_calc_sign (EVP_PKEY * pkey, u8 * data);
EVP_PKEY *ikev2_load_cert_file (u8 * file);
EVP_PKEY *ikev2_load_key_file (u8 * file);
void ikev2_crypto_init (ikev2_main_t * km);
/* ikev2_payload.c */
typedef struct
{
u8 first_payload_type;
u16 last_hdr_off;
u8 *data;
} ikev2_payload_chain_t;
#define ikev2_payload_new_chain(V) vec_validate (V, 0)
#define ikev2_payload_destroy_chain(V) do { \
vec_free((V)->data); \
vec_free(V); \
} while (0)
void ikev2_payload_add_notify (ikev2_payload_chain_t * c, u16 msg_type,
u8 * data);
void ikev2_payload_add_notify_2 (ikev2_payload_chain_t * c, u16 msg_type,
u8 * data, ikev2_notify_t * notify);
void ikev2_payload_add_sa (ikev2_payload_chain_t * c,
ikev2_sa_proposal_t * proposals);
void ikev2_payload_add_ke (ikev2_payload_chain_t * c, u16 dh_group,
u8 * dh_data);
void ikev2_payload_add_nonce (ikev2_payload_chain_t * c, u8 * nonce);
void ikev2_payload_add_id (ikev2_payload_chain_t * c, ikev2_id_t * id,
u8 type);
void ikev2_payload_add_auth (ikev2_payload_chain_t * c, ikev2_auth_t * auth);
void ikev2_payload_add_ts (ikev2_payload_chain_t * c, ikev2_ts_t * ts,
u8 type);
void ikev2_payload_add_delete (ikev2_payload_chain_t * c, ikev2_delete_t * d);
void ikev2_payload_chain_add_padding (ikev2_payload_chain_t * c, int bs);
void ikev2_parse_vendor_payload (ike_payload_header_t * ikep);
ikev2_sa_proposal_t *ikev2_parse_sa_payload (ike_payload_header_t * ikep,
u32 rlen);
ikev2_ts_t *ikev2_parse_ts_payload (ike_payload_header_t * ikep, u32 rlen);
ikev2_delete_t *ikev2_parse_delete_payload (ike_payload_header_t * ikep,
u32 rlen);
ikev2_notify_t *ikev2_parse_notify_payload (ike_payload_header_t * ikep,
u32 rlen);
int ikev2_set_log_level (ikev2_log_level_t log_level);
static_always_inline ikev2_main_per_thread_data_t *
ikev2_get_per_thread_data ()
{
u32 thread_index = vlib_get_thread_index ();
return vec_elt_at_index (ikev2_main.per_thread_data, thread_index);
}
#endif /* __included_ikev2_priv_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
