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
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
|
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
/*
* Source file for all NSS-specific code for the TLS/SSL layer. No code
* but sslgen.c should ever call or use these functions.
*/
#include "setup.h"
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include "urldata.h"
#include "sendf.h"
#include "formdata.h" /* for the boundary function */
#include "url.h" /* for the ssl config check function */
#include "connect.h"
#include "strequal.h"
#include "select.h"
#include "sslgen.h"
#define _MPRINTF_REPLACE /* use the internal *printf() functions */
#include <curl/mprintf.h>
#ifdef USE_NSS
#include "nssg.h"
#include <nspr.h>
#include <nss.h>
#include <ssl.h>
#include <sslerr.h>
#include <secerr.h>
#include <secmod.h>
#include <sslproto.h>
#include <prtypes.h>
#include <pk11pub.h>
#include <prio.h>
#include <secitem.h>
#include <secport.h>
#include <certdb.h>
#include <base64.h>
#include "curl_memory.h"
#include "rawstr.h"
#include "easyif.h" /* for Curl_convert_from_utf8 prototype */
/* The last #include file should be: */
#include "memdebug.h"
#define SSL_DIR "/etc/pki/nssdb"
/* enough to fit the string "PEM Token #[0|1]" */
#define SLOTSIZE 13
PRFileDesc *PR_ImportTCPSocket(PRInt32 osfd);
PRLock * nss_initlock = NULL;
volatile int initialized = 0;
#define HANDSHAKE_TIMEOUT 30
typedef struct {
const char *name;
int num;
PRInt32 version; /* protocol version valid for this cipher */
} cipher_s;
#define PK11_SETATTRS(x,id,v,l) (x)->type = (id); \
(x)->pValue=(v); (x)->ulValueLen = (l)
#define CERT_NewTempCertificate __CERT_NewTempCertificate
enum sslversion { SSL2 = 1, SSL3 = 2, TLS = 4 };
#define NUM_OF_CIPHERS sizeof(cipherlist)/sizeof(cipherlist[0])
static const cipher_s cipherlist[] = {
/* SSL2 cipher suites */
{"rc4", SSL_EN_RC4_128_WITH_MD5, SSL2},
{"rc4-md5", SSL_EN_RC4_128_WITH_MD5, SSL2},
{"rc4export", SSL_EN_RC4_128_EXPORT40_WITH_MD5, SSL2},
{"rc2", SSL_EN_RC2_128_CBC_WITH_MD5, SSL2},
{"rc2export", SSL_EN_RC2_128_CBC_EXPORT40_WITH_MD5, SSL2},
{"des", SSL_EN_DES_64_CBC_WITH_MD5, SSL2},
{"desede3", SSL_EN_DES_192_EDE3_CBC_WITH_MD5, SSL2},
/* SSL3/TLS cipher suites */
{"rsa_rc4_128_md5", SSL_RSA_WITH_RC4_128_MD5, SSL3 | TLS},
{"rsa_rc4_128_sha", SSL_RSA_WITH_RC4_128_SHA, SSL3 | TLS},
{"rsa_3des_sha", SSL_RSA_WITH_3DES_EDE_CBC_SHA, SSL3 | TLS},
{"rsa_des_sha", SSL_RSA_WITH_DES_CBC_SHA, SSL3 | TLS},
{"rsa_rc4_40_md5", SSL_RSA_EXPORT_WITH_RC4_40_MD5, SSL3 | TLS},
{"rsa_rc2_40_md5", SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5, SSL3 | TLS},
{"rsa_null_md5", SSL_RSA_WITH_NULL_MD5, SSL3 | TLS},
{"rsa_null_sha", SSL_RSA_WITH_NULL_SHA, SSL3 | TLS},
{"fips_3des_sha", SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA, SSL3 | TLS},
{"fips_des_sha", SSL_RSA_FIPS_WITH_DES_CBC_SHA, SSL3 | TLS},
{"fortezza", SSL_FORTEZZA_DMS_WITH_FORTEZZA_CBC_SHA, SSL3 | TLS},
{"fortezza_rc4_128_sha", SSL_FORTEZZA_DMS_WITH_RC4_128_SHA, SSL3 | TLS},
{"fortezza_null", SSL_FORTEZZA_DMS_WITH_NULL_SHA, SSL3 | TLS},
/* TLS 1.0: Exportable 56-bit Cipher Suites. */
{"rsa_des_56_sha", TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA, SSL3 | TLS},
{"rsa_rc4_56_sha", TLS_RSA_EXPORT1024_WITH_RC4_56_SHA, SSL3 | TLS},
/* AES ciphers. */
{"rsa_aes_128_sha", TLS_RSA_WITH_AES_128_CBC_SHA, SSL3 | TLS},
{"rsa_aes_256_sha", TLS_RSA_WITH_AES_256_CBC_SHA, SSL3 | TLS},
#ifdef NSS_ENABLE_ECC
/* ECC ciphers. */
{"ecdh_ecdsa_null_sha", TLS_ECDH_ECDSA_WITH_NULL_SHA, TLS},
{"ecdh_ecdsa_rc4_128_sha", TLS_ECDH_ECDSA_WITH_RC4_128_SHA, TLS},
{"ecdh_ecdsa_3des_sha", TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS},
{"ecdh_ecdsa_aes_128_sha", TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, TLS},
{"ecdh_ecdsa_aes_256_sha", TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, TLS},
{"ecdhe_ecdsa_null_sha", TLS_ECDHE_ECDSA_WITH_NULL_SHA, TLS},
{"ecdhe_ecdsa_rc4_128_sha", TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS},
{"ecdhe_ecdsa_3des_sha", TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS},
{"ecdhe_ecdsa_aes_128_sha", TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS},
{"ecdhe_ecdsa_aes_256_sha", TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS},
{"ecdh_rsa_null_sha", TLS_ECDH_RSA_WITH_NULL_SHA, TLS},
{"ecdh_rsa_128_sha", TLS_ECDH_RSA_WITH_RC4_128_SHA, TLS},
{"ecdh_rsa_3des_sha", TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, TLS},
{"ecdh_rsa_aes_128_sha", TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, TLS},
{"ecdh_rsa_aes_256_sha", TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, TLS},
{"echde_rsa_null", TLS_ECDHE_RSA_WITH_NULL_SHA, TLS},
{"ecdhe_rsa_rc4_128_sha", TLS_ECDHE_RSA_WITH_RC4_128_SHA, TLS},
{"ecdhe_rsa_3des_sha", TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, TLS},
{"ecdhe_rsa_aes_128_sha", TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS},
{"ecdhe_rsa_aes_256_sha", TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS},
{"ecdh_anon_null_sha", TLS_ECDH_anon_WITH_NULL_SHA, TLS},
{"ecdh_anon_rc4_128sha", TLS_ECDH_anon_WITH_RC4_128_SHA, TLS},
{"ecdh_anon_3des_sha", TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA, TLS},
{"ecdh_anon_aes_128_sha", TLS_ECDH_anon_WITH_AES_128_CBC_SHA, TLS},
{"ecdh_anon_aes_256_sha", TLS_ECDH_anon_WITH_AES_256_CBC_SHA, TLS},
#endif
};
/* following ciphers are new in NSS 3.4 and not enabled by default, therefore
they are enabled explicitly */
static const int enable_ciphers_by_default[] = {
TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
TLS_RSA_WITH_AES_128_CBC_SHA,
TLS_RSA_WITH_AES_256_CBC_SHA,
SSL_NULL_WITH_NULL_NULL
};
#ifdef HAVE_PK11_CREATEGENERICOBJECT
static const char* pem_library = "libnsspem.so";
#endif
SECMODModule* mod = NULL;
static SECStatus set_ciphers(struct SessionHandle *data, PRFileDesc * model,
char *cipher_list)
{
unsigned int i;
PRBool cipher_state[NUM_OF_CIPHERS];
PRBool found;
char *cipher;
SECStatus rv;
/* First disable all ciphers. This uses a different max value in case
* NSS adds more ciphers later we don't want them available by
* accident
*/
for(i=0; i<SSL_NumImplementedCiphers; i++) {
SSL_CipherPrefSet(model, SSL_ImplementedCiphers[i], SSL_NOT_ALLOWED);
}
/* Set every entry in our list to false */
for(i=0; i<NUM_OF_CIPHERS; i++) {
cipher_state[i] = PR_FALSE;
}
cipher = cipher_list;
while(cipher_list && (cipher_list[0])) {
while((*cipher) && (ISSPACE(*cipher)))
++cipher;
if((cipher_list = strchr(cipher, ','))) {
*cipher_list++ = '\0';
}
found = PR_FALSE;
for(i=0; i<NUM_OF_CIPHERS; i++) {
if(Curl_raw_equal(cipher, cipherlist[i].name)) {
cipher_state[i] = PR_TRUE;
found = PR_TRUE;
break;
}
}
if(found == PR_FALSE) {
failf(data, "Unknown cipher in list: %s", cipher);
return SECFailure;
}
if(cipher_list) {
cipher = cipher_list;
}
}
/* Finally actually enable the selected ciphers */
for(i=0; i<NUM_OF_CIPHERS; i++) {
rv = SSL_CipherPrefSet(model, cipherlist[i].num, cipher_state[i]);
if(rv != SECSuccess) {
failf(data, "Unknown cipher in cipher list");
return SECFailure;
}
}
return SECSuccess;
}
/*
* Get the number of ciphers that are enabled. We use this to determine
* if we need to call NSS_SetDomesticPolicy() to enable the default ciphers.
*/
static int num_enabled_ciphers(void)
{
PRInt32 policy = 0;
int count = 0;
unsigned int i;
for(i=0; i<NUM_OF_CIPHERS; i++) {
SSL_CipherPolicyGet(cipherlist[i].num, &policy);
if(policy)
count++;
}
return count;
}
/*
* Determine whether the nickname passed in is a filename that needs to
* be loaded as a PEM or a regular NSS nickname.
*
* returns 1 for a file
* returns 0 for not a file (NSS nickname)
*/
static int is_file(const char *filename)
{
struct stat st;
if(filename == NULL)
return 0;
if(stat(filename, &st) == 0)
if(S_ISREG(st.st_mode))
return 1;
return 0;
}
static int nss_load_cert(struct ssl_connect_data *ssl,
const char *filename, PRBool cacert)
{
#ifdef HAVE_PK11_CREATEGENERICOBJECT
CK_SLOT_ID slotID;
PK11SlotInfo * slot = NULL;
CK_ATTRIBUTE *attrs;
CK_ATTRIBUTE theTemplate[20];
CK_BBOOL cktrue = CK_TRUE;
CK_BBOOL ckfalse = CK_FALSE;
CK_OBJECT_CLASS objClass = CKO_CERTIFICATE;
char slotname[SLOTSIZE];
#endif
CERTCertificate *cert;
char *nickname = NULL;
char *n = NULL;
/* If there is no slash in the filename it is assumed to be a regular
* NSS nickname.
*/
if(is_file(filename)) {
n = strrchr(filename, '/');
if(n)
n++;
if(!mod)
return 1;
}
else {
/* A nickname from the NSS internal database */
if(cacert)
return 0; /* You can't specify an NSS CA nickname this way */
nickname = strdup(filename);
if(!nickname)
return 0;
goto done;
}
#ifdef HAVE_PK11_CREATEGENERICOBJECT
attrs = theTemplate;
/* All CA and trust objects go into slot 0. Other slots are used
* for storing certificates. With each new user certificate we increment
* the slot count. We only support 1 user certificate right now.
*/
if(cacert)
slotID = 0;
else
slotID = 1;
snprintf(slotname, SLOTSIZE, "PEM Token #%ld", slotID);
nickname = aprintf("PEM Token #%ld:%s", slotID, n);
if(!nickname)
return 0;
slot = PK11_FindSlotByName(slotname);
if(!slot) {
free(nickname);
return 0;
}
PK11_SETATTRS(attrs, CKA_CLASS, &objClass, sizeof(objClass) );
attrs++;
PK11_SETATTRS(attrs, CKA_TOKEN, &cktrue, sizeof(CK_BBOOL) );
attrs++;
PK11_SETATTRS(attrs, CKA_LABEL, (unsigned char *)filename,
strlen(filename)+1);
attrs++;
if(cacert) {
PK11_SETATTRS(attrs, CKA_TRUST, &cktrue, sizeof(CK_BBOOL) );
}
else {
PK11_SETATTRS(attrs, CKA_TRUST, &ckfalse, sizeof(CK_BBOOL) );
}
attrs++;
/* This load the certificate in our PEM module into the appropriate
* slot.
*/
ssl->cacert[slotID] = PK11_CreateGenericObject(slot, theTemplate, 4,
PR_FALSE /* isPerm */);
PK11_FreeSlot(slot);
if(ssl->cacert[slotID] == NULL) {
free(nickname);
return 0;
}
#else
/* We don't have PK11_CreateGenericObject but a file-based cert was passed
* in. We need to fail.
*/
return 0;
#endif
done:
/* Double-check that the certificate or nickname requested exists in
* either the token or the NSS certificate database.
*/
if(!cacert) {
cert = PK11_FindCertFromNickname((char *)nickname, NULL);
/* An invalid nickname was passed in */
if(cert == NULL) {
free(nickname);
PR_SetError(SEC_ERROR_UNKNOWN_CERT, 0);
return 0;
}
CERT_DestroyCertificate(cert);
}
free(nickname);
return 1;
}
static int nss_load_crl(const char* crlfilename, PRBool ascii)
{
PRFileDesc *infile;
PRStatus prstat;
PRFileInfo info;
PRInt32 nb;
int rv;
SECItem crlDER;
CERTSignedCrl *crl=NULL;
PK11SlotInfo *slot=NULL;
infile = PR_Open(crlfilename,PR_RDONLY,0);
if (!infile) {
return 0;
}
crlDER.data = NULL;
prstat = PR_GetOpenFileInfo(infile,&info);
if (prstat!=PR_SUCCESS)
return 0;
if (ascii) {
SECItem filedata;
char *asc,*body;
filedata.data = NULL;
if (!SECITEM_AllocItem(NULL,&filedata,info.size))
return 0;
nb = PR_Read(infile,filedata.data,info.size);
if (nb!=info.size)
return 0;
asc = (char*)filedata.data;
if (!asc)
return 0;
body=strstr(asc,"-----BEGIN");
if (body != NULL) {
char *trailer=NULL;
asc = body;
body = PORT_Strchr(asc,'\n');
if (!body)
body = PORT_Strchr(asc,'\r');
if (body)
trailer = strstr(++body,"-----END");
if (trailer!=NULL)
*trailer='\0';
else
return 0;
}
else {
body = asc;
}
rv = ATOB_ConvertAsciiToItem(&crlDER,body);
PORT_Free(filedata.data);
if (rv)
return 0;
}
else {
if (!SECITEM_AllocItem(NULL,&crlDER,info.size))
return 0;
nb = PR_Read(infile,crlDER.data,info.size);
if (nb!=info.size)
return 0;
}
slot = PK11_GetInternalKeySlot();
crl = PK11_ImportCRL(slot,&crlDER,
NULL,SEC_CRL_TYPE,
NULL,CRL_IMPORT_DEFAULT_OPTIONS,
NULL,(CRL_DECODE_DEFAULT_OPTIONS|
CRL_DECODE_DONT_COPY_DER));
if (slot) PK11_FreeSlot(slot);
if (!crl) return 0;
SEC_DestroyCrl(crl);
return 1;
}
static int nss_load_key(struct connectdata *conn, int sockindex, char *key_file)
{
#ifdef HAVE_PK11_CREATEGENERICOBJECT
PK11SlotInfo * slot = NULL;
CK_ATTRIBUTE *attrs;
CK_ATTRIBUTE theTemplate[20];
CK_BBOOL cktrue = CK_TRUE;
CK_OBJECT_CLASS objClass = CKO_PRIVATE_KEY;
CK_SLOT_ID slotID;
char slotname[SLOTSIZE];
struct ssl_connect_data *sslconn = &conn->ssl[sockindex];
attrs = theTemplate;
/* FIXME: grok the various file types */
slotID = 1; /* hardcoded for now */
snprintf(slotname, sizeof(slotname), "PEM Token #%ld", slotID);
slot = PK11_FindSlotByName(slotname);
if(!slot)
return 0;
PK11_SETATTRS(attrs, CKA_CLASS, &objClass, sizeof(objClass) ); attrs++;
PK11_SETATTRS(attrs, CKA_TOKEN, &cktrue, sizeof(CK_BBOOL) ); attrs++;
PK11_SETATTRS(attrs, CKA_LABEL, (unsigned char *)key_file,
strlen(key_file)+1); attrs++;
/* When adding an encrypted key the PKCS#11 will be set as removed */
sslconn->key = PK11_CreateGenericObject(slot, theTemplate, 3,
PR_FALSE /* isPerm */);
if(sslconn->key == NULL) {
PR_SetError(SEC_ERROR_BAD_KEY, 0);
return 0;
}
/* This will force the token to be seen as re-inserted */
SECMOD_WaitForAnyTokenEvent(mod, 0, 0);
PK11_IsPresent(slot);
/* parg is initialized in nss_Init_Tokens() */
if(PK11_Authenticate(slot, PR_TRUE,
conn->data->set.str[STRING_KEY_PASSWD]) != SECSuccess) {
PK11_FreeSlot(slot);
return 0;
}
PK11_FreeSlot(slot);
return 1;
#else
/* If we don't have PK11_CreateGenericObject then we can't load a file-based
* key.
*/
(void)conn; /* unused */
(void)key_file; /* unused */
return 0;
#endif
}
static int display_error(struct connectdata *conn, PRInt32 err,
const char *filename)
{
switch(err) {
case SEC_ERROR_BAD_PASSWORD:
failf(conn->data, "Unable to load client key: Incorrect password");
return 1;
case SEC_ERROR_UNKNOWN_CERT:
failf(conn->data, "Unable to load certificate %s", filename);
return 1;
default:
break;
}
return 0; /* The caller will print a generic error */
}
static int cert_stuff(struct connectdata *conn,
int sockindex, char *cert_file, char *key_file)
{
struct SessionHandle *data = conn->data;
int rv = 0;
if(cert_file) {
rv = nss_load_cert(&conn->ssl[sockindex], cert_file, PR_FALSE);
if(!rv) {
if(!display_error(conn, PR_GetError(), cert_file))
failf(data, "Unable to load client cert %d.", PR_GetError());
return 0;
}
}
if(key_file || (is_file(cert_file))) {
if(key_file)
rv = nss_load_key(conn, sockindex, key_file);
else
/* In case the cert file also has the key */
rv = nss_load_key(conn, sockindex, cert_file);
if(!rv) {
if(!display_error(conn, PR_GetError(), key_file))
failf(data, "Unable to load client key %d.", PR_GetError());
return 0;
}
}
return 1;
}
static char * nss_get_password(PK11SlotInfo * slot, PRBool retry, void *arg)
{
(void)slot; /* unused */
if(retry || NULL == arg)
return NULL;
else
return (char *)PORT_Strdup((char *)arg);
}
static SECStatus BadCertHandler(void *arg, PRFileDesc *sock)
{
SECStatus success = SECSuccess;
struct connectdata *conn = (struct connectdata *)arg;
PRErrorCode err = PR_GetError();
CERTCertificate *cert = NULL;
char *subject, *subject_cn, *issuer;
if(conn->data->set.ssl.certverifyresult!=0)
return success;
conn->data->set.ssl.certverifyresult=err;
cert = SSL_PeerCertificate(sock);
subject = CERT_NameToAscii(&cert->subject);
subject_cn = CERT_GetCommonName(&cert->subject);
issuer = CERT_NameToAscii(&cert->issuer);
CERT_DestroyCertificate(cert);
switch(err) {
case SEC_ERROR_CA_CERT_INVALID:
infof(conn->data, "Issuer certificate is invalid: '%s'\n", issuer);
if(conn->data->set.ssl.verifypeer)
success = SECFailure;
break;
case SEC_ERROR_UNTRUSTED_ISSUER:
if(conn->data->set.ssl.verifypeer)
success = SECFailure;
infof(conn->data, "Certificate is signed by an untrusted issuer: '%s'\n",
issuer);
break;
case SSL_ERROR_BAD_CERT_DOMAIN:
if(conn->data->set.ssl.verifyhost) {
failf(conn->data, "SSL: certificate subject name '%s' does not match "
"target host name '%s'", subject_cn, conn->host.dispname);
success = SECFailure;
} else {
infof(conn->data, "warning: SSL: certificate subject name '%s' does not "
"match target host name '%s'\n", subject_cn, conn->host.dispname);
}
break;
case SEC_ERROR_EXPIRED_CERTIFICATE:
if(conn->data->set.ssl.verifypeer)
success = SECFailure;
infof(conn->data, "Remote Certificate has expired.\n");
break;
case SEC_ERROR_UNKNOWN_ISSUER:
if(conn->data->set.ssl.verifypeer)
success = SECFailure;
infof(conn->data, "Peer's certificate issuer is not recognized: '%s'\n",
issuer);
break;
default:
if(conn->data->set.ssl.verifypeer)
success = SECFailure;
infof(conn->data, "Bad certificate received. Subject = '%s', "
"Issuer = '%s'\n", subject, issuer);
break;
}
if(success == SECSuccess)
infof(conn->data, "SSL certificate verify ok.\n");
PR_Free(subject);
PR_Free(subject_cn);
PR_Free(issuer);
return success;
}
/**
* Inform the application that the handshake is complete.
*/
static SECStatus HandshakeCallback(PRFileDesc *sock, void *arg)
{
(void)sock;
(void)arg;
return SECSuccess;
}
static void display_cert_info(struct SessionHandle *data, CERTCertificate *cert) {
char *subject, *issuer, *common_name;
PRExplodedTime printableTime;
char timeString[256];
PRTime notBefore, notAfter;
subject = CERT_NameToAscii(&cert->subject);
issuer = CERT_NameToAscii(&cert->issuer);
common_name = CERT_GetCommonName(&cert->subject);
infof(data, "\tsubject: %s\n", subject);
CERT_GetCertTimes(cert, ¬Before, ¬After);
PR_ExplodeTime(notBefore, PR_GMTParameters, &printableTime);
PR_FormatTime(timeString, 256, "%b %d %H:%M:%S %Y GMT", &printableTime);
infof(data, "\tstart date: %s\n", timeString);
PR_ExplodeTime(notAfter, PR_GMTParameters, &printableTime);
PR_FormatTime(timeString, 256, "%b %d %H:%M:%S %Y GMT", &printableTime);
infof(data, "\texpire date: %s\n", timeString);
infof(data, "\tcommon name: %s\n", common_name);
infof(data, "\tissuer: %s\n", issuer);
PR_Free(subject);
PR_Free(issuer);
PR_Free(common_name);
}
static void display_conn_info(struct connectdata *conn, PRFileDesc *sock)
{
SSLChannelInfo channel;
SSLCipherSuiteInfo suite;
CERTCertificate *cert;
if(SSL_GetChannelInfo(sock, &channel, sizeof channel) ==
SECSuccess && channel.length == sizeof channel &&
channel.cipherSuite) {
if(SSL_GetCipherSuiteInfo(channel.cipherSuite,
&suite, sizeof suite) == SECSuccess) {
infof(conn->data, "SSL connection using %s\n", suite.cipherSuiteName);
}
}
infof(conn->data, "Server certificate:\n");
cert = SSL_PeerCertificate(sock);
display_cert_info(conn->data, cert);
CERT_DestroyCertificate(cert);
return;
}
/**
*
* Check that the Peer certificate's issuer certificate matches the one found
* by issuer_nickname. This is not exactly the way OpenSSL and GNU TLS do the
* issuer check, so we provide comments that mimic the OpenSSL
* X509_check_issued function (in x509v3/v3_purp.c)
*/
static SECStatus check_issuer_cert(PRFileDesc *sock,
char *issuer_nickname)
{
CERTCertificate *cert,*cert_issuer,*issuer;
SECStatus res=SECSuccess;
void *proto_win = NULL;
/*
PRArenaPool *tmpArena = NULL;
CERTAuthKeyID *authorityKeyID = NULL;
SECITEM *caname = NULL;
*/
cert = SSL_PeerCertificate(sock);
cert_issuer = CERT_FindCertIssuer(cert,PR_Now(),certUsageObjectSigner);
proto_win = SSL_RevealPinArg(sock);
issuer = NULL;
issuer = PK11_FindCertFromNickname(issuer_nickname, proto_win);
if ((!cert_issuer) || (!issuer))
res = SECFailure;
else if (SECITEM_CompareItem(&cert_issuer->derCert,
&issuer->derCert)!=SECEqual)
res = SECFailure;
CERT_DestroyCertificate(cert);
CERT_DestroyCertificate(issuer);
CERT_DestroyCertificate(cert_issuer);
return res;
}
/**
*
* Callback to pick the SSL client certificate.
*/
static SECStatus SelectClientCert(void *arg, PRFileDesc *sock,
struct CERTDistNamesStr *caNames,
struct CERTCertificateStr **pRetCert,
struct SECKEYPrivateKeyStr **pRetKey)
{
static const char pem_nickname[] = "PEM Token #1";
const char *pem_slotname = pem_nickname;
struct ssl_connect_data *connssl = (struct ssl_connect_data *)arg;
struct SessionHandle *data = connssl->data;
const char *nickname = connssl->client_nickname;
if (mod && nickname &&
0 == strncmp(nickname, pem_nickname, /* length of "PEM Token" */ 9)) {
/* use the cert/key provided by PEM reader */
PK11SlotInfo *slot;
void *proto_win = SSL_RevealPinArg(sock);
*pRetKey = NULL;
*pRetCert = PK11_FindCertFromNickname(nickname, proto_win);
if (NULL == *pRetCert) {
failf(data, "NSS: client certificate not found: %s", nickname);
return SECFailure;
}
slot = PK11_FindSlotByName(pem_slotname);
if (NULL == slot) {
failf(data, "NSS: PK11 slot not found: %s", pem_slotname);
return SECFailure;
}
*pRetKey = PK11_FindPrivateKeyFromCert(slot, *pRetCert, NULL);
PK11_FreeSlot(slot);
if (NULL == *pRetKey) {
failf(data, "NSS: private key not found for certificate: %s", nickname);
return SECFailure;
}
infof(data, "NSS: Client client certificate: %s\n", nickname);
display_cert_info(data, *pRetCert);
return SECSuccess;
}
/* use the default NSS hook */
if (SECSuccess != NSS_GetClientAuthData((void *)nickname, sock, caNames,
pRetCert, pRetKey)
|| NULL == *pRetCert) {
if (NULL == nickname)
failf(data, "NSS: client certificate not found (nickname not specified)");
else
failf(data, "NSS: client certificate not found: %s", nickname);
return SECFailure;
}
/* get certificate nickname if any */
nickname = (*pRetCert)->nickname;
if (NULL == nickname)
nickname = "[unknown]";
if (NULL == *pRetKey) {
failf(data, "NSS: private key not found for certificate: %s", nickname);
return SECFailure;
}
infof(data, "NSS: using client certificate: %s\n", nickname);
display_cert_info(data, *pRetCert);
return SECSuccess;
}
/**
* Global SSL init
*
* @retval 0 error initializing SSL
* @retval 1 SSL initialized successfully
*/
int Curl_nss_init(void)
{
/* curl_global_init() is not thread-safe so this test is ok */
if (nss_initlock == NULL) {
PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 256);
nss_initlock = PR_NewLock();
}
/* We will actually initialize NSS later */
return 1;
}
/* Global cleanup */
void Curl_nss_cleanup(void)
{
/* This function isn't required to be threadsafe and this is only done
* as a safety feature.
*/
PR_Lock(nss_initlock);
if (initialized) {
/* Free references to client certificates held in the SSL session cache.
* Omitting this hampers destruction of the security module owning
* the certificates. */
SSL_ClearSessionCache();
if(mod && SECSuccess == SECMOD_UnloadUserModule(mod)) {
SECMOD_DestroyModule(mod);
mod = NULL;
}
NSS_Shutdown();
}
PR_Unlock(nss_initlock);
PR_DestroyLock(nss_initlock);
nss_initlock = NULL;
initialized = 0;
}
/*
* This function uses SSL_peek to determine connection status.
*
* Return codes:
* 1 means the connection is still in place
* 0 means the connection has been closed
* -1 means the connection status is unknown
*/
int
Curl_nss_check_cxn(struct connectdata *conn)
{
int rc;
char buf;
rc =
PR_Recv(conn->ssl[FIRSTSOCKET].handle, (void *)&buf, 1, PR_MSG_PEEK,
PR_SecondsToInterval(1));
if(rc > 0)
return 1; /* connection still in place */
if(rc == 0)
return 0; /* connection has been closed */
return -1; /* connection status unknown */
}
/*
* This function is called when an SSL connection is closed.
*/
void Curl_nss_close(struct connectdata *conn, int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
if(connssl->handle) {
PR_Close(connssl->handle);
if(connssl->client_nickname != NULL) {
free(connssl->client_nickname);
connssl->client_nickname = NULL;
}
#ifdef HAVE_PK11_CREATEGENERICOBJECT
if(connssl->key)
(void)PK11_DestroyGenericObject(connssl->key);
if(connssl->cacert[1])
(void)PK11_DestroyGenericObject(connssl->cacert[1]);
if(connssl->cacert[0])
(void)PK11_DestroyGenericObject(connssl->cacert[0]);
#endif
connssl->handle = NULL;
}
}
/*
* This function is called when the 'data' struct is going away. Close
* down everything and free all resources!
*/
int Curl_nss_close_all(struct SessionHandle *data)
{
(void)data;
return 0;
}
CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
{
PRInt32 err;
PRFileDesc *model = NULL;
PRBool ssl2, ssl3, tlsv1;
struct SessionHandle *data = conn->data;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
SECStatus rv;
char *certDir = NULL;
int curlerr;
const int *cipher_to_enable;
curlerr = CURLE_SSL_CONNECT_ERROR;
if (connssl->state == ssl_connection_complete)
return CURLE_OK;
connssl->data = data;
#ifdef HAVE_PK11_CREATEGENERICOBJECT
connssl->cacert[0] = NULL;
connssl->cacert[1] = NULL;
connssl->key = NULL;
#endif
/* FIXME. NSS doesn't support multiple databases open at the same time. */
PR_Lock(nss_initlock);
if(!initialized) {
certDir = getenv("SSL_DIR"); /* Look in $SSL_DIR */
if(!certDir) {
struct stat st;
if(stat(SSL_DIR, &st) == 0)
if(S_ISDIR(st.st_mode)) {
certDir = (char *)SSL_DIR;
}
}
if (!NSS_IsInitialized()) {
initialized = 1;
if(!certDir) {
rv = NSS_NoDB_Init(NULL);
}
else {
rv = NSS_Initialize(certDir, NULL, NULL, "secmod.db",
NSS_INIT_READONLY);
}
if(rv != SECSuccess) {
infof(conn->data, "Unable to initialize NSS database\n");
curlerr = CURLE_SSL_CACERT_BADFILE;
initialized = 0;
PR_Unlock(nss_initlock);
goto error;
}
}
if(num_enabled_ciphers() == 0)
NSS_SetDomesticPolicy();
#ifdef HAVE_PK11_CREATEGENERICOBJECT
if(!mod) {
char *configstring = aprintf("library=%s name=PEM", pem_library);
if(!configstring) {
PR_Unlock(nss_initlock);
goto error;
}
mod = SECMOD_LoadUserModule(configstring, NULL, PR_FALSE);
free(configstring);
if(!mod || !mod->loaded) {
if(mod) {
SECMOD_DestroyModule(mod);
mod = NULL;
}
infof(data, "WARNING: failed to load NSS PEM library %s. Using OpenSSL "
"PEM certificates will not work.\n", pem_library);
}
}
#endif
PK11_SetPasswordFunc(nss_get_password);
}
PR_Unlock(nss_initlock);
model = PR_NewTCPSocket();
if(!model)
goto error;
model = SSL_ImportFD(NULL, model);
if(SSL_OptionSet(model, SSL_SECURITY, PR_TRUE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) != SECSuccess)
goto error;
ssl2 = ssl3 = tlsv1 = PR_FALSE;
switch (data->set.ssl.version) {
default:
case CURL_SSLVERSION_DEFAULT:
ssl3 = tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_TLSv1:
tlsv1 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv2:
ssl2 = PR_TRUE;
break;
case CURL_SSLVERSION_SSLv3:
ssl3 = PR_TRUE;
break;
}
if(SSL_OptionSet(model, SSL_ENABLE_SSL2, ssl2) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_SSL3, ssl3) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_ENABLE_TLS, tlsv1) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_V2_COMPATIBLE_HELLO, ssl2) != SECSuccess)
goto error;
/* enable all ciphers from enable_ciphers_by_default */
cipher_to_enable = enable_ciphers_by_default;
while (SSL_NULL_WITH_NULL_NULL != *cipher_to_enable) {
if (SSL_CipherPrefSet(model, *cipher_to_enable, PR_TRUE) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
cipher_to_enable++;
}
if(data->set.ssl.cipher_list) {
if(set_ciphers(data, model, data->set.ssl.cipher_list) != SECSuccess) {
curlerr = CURLE_SSL_CIPHER;
goto error;
}
}
if(data->set.ssl.verifyhost == 1)
infof(data, "warning: ignoring unsupported value (1) of ssl.verifyhost\n");
data->set.ssl.certverifyresult=0; /* not checked yet */
if(SSL_BadCertHook(model, (SSLBadCertHandler) BadCertHandler, conn)
!= SECSuccess) {
goto error;
}
if(SSL_HandshakeCallback(model, (SSLHandshakeCallback) HandshakeCallback,
NULL) != SECSuccess)
goto error;
if(!data->set.ssl.verifypeer)
/* skip the verifying of the peer */
;
else if(data->set.ssl.CAfile) {
int rc = nss_load_cert(&conn->ssl[sockindex], data->set.ssl.CAfile,
PR_TRUE);
if(!rc) {
curlerr = CURLE_SSL_CACERT_BADFILE;
goto error;
}
}
else if(data->set.ssl.CApath) {
struct stat st;
PRDir *dir;
PRDirEntry *entry;
if(stat(data->set.ssl.CApath, &st) == -1) {
curlerr = CURLE_SSL_CACERT_BADFILE;
goto error;
}
if(S_ISDIR(st.st_mode)) {
int rc;
dir = PR_OpenDir(data->set.ssl.CApath);
do {
entry = PR_ReadDir(dir, PR_SKIP_BOTH | PR_SKIP_HIDDEN);
if(entry) {
char fullpath[PATH_MAX];
snprintf(fullpath, sizeof(fullpath), "%s/%s", data->set.ssl.CApath,
entry->name);
rc = nss_load_cert(&conn->ssl[sockindex], fullpath, PR_TRUE);
/* FIXME: check this return value! */
}
/* This is purposefully tolerant of errors so non-PEM files
* can be in the same directory */
} while(entry != NULL);
PR_CloseDir(dir);
}
}
infof(data,
" CAfile: %s\n"
" CApath: %s\n",
data->set.ssl.CAfile ? data->set.ssl.CAfile : "none",
data->set.ssl.CApath ? data->set.ssl.CApath : "none");
if (data->set.ssl.CRLfile) {
int rc = nss_load_crl(data->set.ssl.CRLfile, PR_FALSE);
if (!rc) {
curlerr = CURLE_SSL_CRL_BADFILE;
goto error;
}
infof(data,
" CRLfile: %s\n",
data->set.ssl.CRLfile ? data->set.ssl.CRLfile : "none");
}
if(data->set.str[STRING_CERT]) {
char *n;
char *nickname;
bool nickname_alloc = FALSE;
if(is_file(data->set.str[STRING_CERT])) {
n = strrchr(data->set.str[STRING_CERT], '/');
if(n) {
n++; /* skip last slash */
nickname = aprintf("PEM Token #%d:%s", 1, n);
if(!nickname)
return CURLE_OUT_OF_MEMORY;
nickname_alloc = TRUE;
}
}
else {
nickname = data->set.str[STRING_CERT];
}
if(!cert_stuff(conn, sockindex, data->set.str[STRING_CERT],
data->set.str[STRING_KEY])) {
/* failf() is already done in cert_stuff() */
if(nickname_alloc)
free(nickname);
return CURLE_SSL_CERTPROBLEM;
}
/* this "takes over" the pointer to the allocated name or makes a
dup of it */
connssl->client_nickname = nickname_alloc?nickname:strdup(nickname);
if(!connssl->client_nickname)
return CURLE_OUT_OF_MEMORY;
}
else
connssl->client_nickname = NULL;
if(SSL_GetClientAuthDataHook(model, SelectClientCert,
(void *)connssl) != SECSuccess) {
curlerr = CURLE_SSL_CERTPROBLEM;
goto error;
}
/* Import our model socket onto the existing file descriptor */
connssl->handle = PR_ImportTCPSocket(sockfd);
connssl->handle = SSL_ImportFD(model, connssl->handle);
if(!connssl->handle)
goto error;
PR_Close(model); /* We don't need this any more */
/* This is the password associated with the cert that we're using */
if (data->set.str[STRING_KEY_PASSWD]) {
SSL_SetPKCS11PinArg(connssl->handle, data->set.str[STRING_KEY_PASSWD]);
}
/* Force handshake on next I/O */
SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE);
SSL_SetURL(connssl->handle, conn->host.name);
/* Force the handshake now */
if(SSL_ForceHandshakeWithTimeout(connssl->handle,
PR_SecondsToInterval(HANDSHAKE_TIMEOUT))
!= SECSuccess) {
if(conn->data->set.ssl.certverifyresult == SSL_ERROR_BAD_CERT_DOMAIN)
curlerr = CURLE_PEER_FAILED_VERIFICATION;
else if(conn->data->set.ssl.certverifyresult!=0)
curlerr = CURLE_SSL_CACERT;
goto error;
}
connssl->state = ssl_connection_complete;
display_conn_info(conn, connssl->handle);
if (data->set.str[STRING_SSL_ISSUERCERT]) {
char *n;
char *nickname;
bool nickname_alloc = FALSE;
SECStatus ret;
if(is_file(data->set.str[STRING_SSL_ISSUERCERT])) {
n = strrchr(data->set.str[STRING_SSL_ISSUERCERT], '/');
if (n) {
n++; /* skip last slash */
nickname = aprintf("PEM Token #%d:%s", 1, n);
if(!nickname)
return CURLE_OUT_OF_MEMORY;
nickname_alloc = TRUE;
}
}
else
nickname = data->set.str[STRING_SSL_ISSUERCERT];
ret = check_issuer_cert(connssl->handle, nickname);
if(nickname_alloc)
free(nickname);
if(SECFailure == ret) {
infof(data,"SSL certificate issuer check failed\n");
curlerr = CURLE_SSL_ISSUER_ERROR;
goto error;
}
else {
infof(data, "SSL certificate issuer check ok\n");
}
}
return CURLE_OK;
error:
err = PR_GetError();
infof(data, "NSS error %d\n", err);
if(model)
PR_Close(model);
return curlerr;
}
/* return number of sent (non-SSL) bytes */
int Curl_nss_send(struct connectdata *conn, /* connection data */
int sockindex, /* socketindex */
const void *mem, /* send this data */
size_t len) /* amount to write */
{
PRInt32 err;
struct SessionHandle *data = conn->data;
PRInt32 timeout;
int rc;
if(data->set.timeout)
timeout = PR_MillisecondsToInterval(data->set.timeout);
else
timeout = PR_MillisecondsToInterval(DEFAULT_CONNECT_TIMEOUT);
rc = PR_Send(conn->ssl[sockindex].handle, mem, (int)len, 0, timeout);
if(rc < 0) {
err = PR_GetError();
if(err == PR_IO_TIMEOUT_ERROR) {
failf(data, "SSL connection timeout");
return CURLE_OPERATION_TIMEDOUT;
}
failf(conn->data, "SSL write: error %d", err);
return -1;
}
return rc; /* number of bytes */
}
/*
* If the read would block we return -1 and set 'wouldblock' to TRUE.
* Otherwise we return the amount of data read. Other errors should return -1
* and set 'wouldblock' to FALSE.
*/
ssize_t Curl_nss_recv(struct connectdata * conn, /* connection data */
int num, /* socketindex */
char *buf, /* store read data here */
size_t buffersize, /* max amount to read */
bool * wouldblock)
{
ssize_t nread;
struct SessionHandle *data = conn->data;
PRInt32 timeout;
if(data->set.timeout)
timeout = PR_SecondsToInterval(data->set.timeout);
else
timeout = PR_MillisecondsToInterval(DEFAULT_CONNECT_TIMEOUT);
nread = PR_Recv(conn->ssl[num].handle, buf, (int)buffersize, 0, timeout);
*wouldblock = FALSE;
if(nread < 0) {
/* failed SSL read */
PRInt32 err = PR_GetError();
if(err == PR_WOULD_BLOCK_ERROR) {
*wouldblock = TRUE;
return -1; /* basically EWOULDBLOCK */
}
if(err == PR_IO_TIMEOUT_ERROR) {
failf(data, "SSL connection timeout");
return CURLE_OPERATION_TIMEDOUT;
}
failf(conn->data, "SSL read: errno %d", err);
return -1;
}
return nread;
}
size_t Curl_nss_version(char *buffer, size_t size)
{
return snprintf(buffer, size, "NSS/%s", NSS_VERSION);
}
#endif /* USE_NSS */
|