/
apps.c
3385 lines (3016 loc) · 95.5 KB
/
apps.c
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
/*
* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
/*
* On VMS, you need to define this to get the declaration of fileno(). The
* value 2 is to make sure no function defined in POSIX-2 is left undefined.
*/
# define _POSIX_C_SOURCE 2
#endif
#ifndef OPENSSL_NO_ENGINE
/* We need to use some deprecated APIs */
# define OPENSSL_SUPPRESS_DEPRECATED
# include <openssl/engine.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifndef OPENSSL_NO_POSIX_IO
# include <sys/stat.h>
# include <fcntl.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/http.h>
#include <openssl/pem.h>
#include <openssl/store.h>
#include <openssl/pkcs12.h>
#include <openssl/ui.h>
#include <openssl/safestack.h>
#include <openssl/rsa.h>
#include <openssl/rand.h>
#include <openssl/bn.h>
#include <openssl/ssl.h>
#include <openssl/core_names.h>
#include "s_apps.h"
#include "apps.h"
#ifdef _WIN32
static int WIN32_rename(const char *from, const char *to);
# define rename(from,to) WIN32_rename((from),(to))
#endif
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
# include <conio.h>
#endif
#if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32) || defined(__BORLANDC__)
# define _kbhit kbhit
#endif
static BIO *bio_open_default_(const char *filename, char mode, int format,
int quiet);
#define PASS_SOURCE_SIZE_MAX 4
DEFINE_STACK_OF(CONF)
typedef struct {
const char *name;
unsigned long flag;
unsigned long mask;
} NAME_EX_TBL;
static int set_table_opts(unsigned long *flags, const char *arg,
const NAME_EX_TBL * in_tbl);
static int set_multi_opts(unsigned long *flags, const char *arg,
const NAME_EX_TBL * in_tbl);
int app_init(long mesgwin);
int chopup_args(ARGS *arg, char *buf)
{
int quoted;
char c = '\0', *p = NULL;
arg->argc = 0;
if (arg->size == 0) {
arg->size = 20;
arg->argv = app_malloc(sizeof(*arg->argv) * arg->size, "argv space");
}
for (p = buf;;) {
/* Skip whitespace. */
while (*p && isspace(_UC(*p)))
p++;
if (*p == '\0')
break;
/* The start of something good :-) */
if (arg->argc >= arg->size) {
char **tmp;
arg->size += 20;
tmp = OPENSSL_realloc(arg->argv, sizeof(*arg->argv) * arg->size);
if (tmp == NULL)
return 0;
arg->argv = tmp;
}
quoted = *p == '\'' || *p == '"';
if (quoted)
c = *p++;
arg->argv[arg->argc++] = p;
/* now look for the end of this */
if (quoted) {
while (*p && *p != c)
p++;
*p++ = '\0';
} else {
while (*p && !isspace(_UC(*p)))
p++;
if (*p)
*p++ = '\0';
}
}
arg->argv[arg->argc] = NULL;
return 1;
}
#ifndef APP_INIT
int app_init(long mesgwin)
{
return 1;
}
#endif
int ctx_set_verify_locations(SSL_CTX *ctx,
const char *CAfile, int noCAfile,
const char *CApath, int noCApath,
const char *CAstore, int noCAstore)
{
if (CAfile == NULL && CApath == NULL && CAstore == NULL) {
if (!noCAfile && SSL_CTX_set_default_verify_file(ctx) <= 0)
return 0;
if (!noCApath && SSL_CTX_set_default_verify_dir(ctx) <= 0)
return 0;
if (!noCAstore && SSL_CTX_set_default_verify_store(ctx) <= 0)
return 0;
return 1;
}
if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
return 0;
if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
return 0;
if (CAstore != NULL && !SSL_CTX_load_verify_store(ctx, CAstore))
return 0;
return 1;
}
#ifndef OPENSSL_NO_CT
int ctx_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
{
if (path == NULL)
return SSL_CTX_set_default_ctlog_list_file(ctx);
return SSL_CTX_set_ctlog_list_file(ctx, path);
}
#endif
static unsigned long nmflag = 0;
static char nmflag_set = 0;
int set_nameopt(const char *arg)
{
int ret = set_name_ex(&nmflag, arg);
if (ret)
nmflag_set = 1;
return ret;
}
unsigned long get_nameopt(void)
{
return (nmflag_set) ? nmflag : XN_FLAG_ONELINE;
}
void dump_cert_text(BIO *out, X509 *x)
{
print_name(out, "subject=", X509_get_subject_name(x));
print_name(out, "issuer=", X509_get_issuer_name(x));
}
int wrap_password_callback(char *buf, int bufsiz, int verify, void *userdata)
{
return password_callback(buf, bufsiz, verify, (PW_CB_DATA *)userdata);
}
static char *app_get_pass(const char *arg, int keepbio);
char *get_passwd(const char *pass, const char *desc)
{
char *result = NULL;
if (desc == NULL)
desc = "<unknown>";
if (!app_passwd(pass, NULL, &result, NULL))
BIO_printf(bio_err, "Error getting password for %s\n", desc);
if (pass != NULL && result == NULL) {
BIO_printf(bio_err,
"Trying plain input string (better precede with 'pass:')\n");
result = OPENSSL_strdup(pass);
if (result == NULL)
BIO_printf(bio_err, "Out of memory getting password for %s\n", desc);
}
return result;
}
int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
{
int same = arg1 != NULL && arg2 != NULL && strcmp(arg1, arg2) == 0;
if (arg1 != NULL) {
*pass1 = app_get_pass(arg1, same);
if (*pass1 == NULL)
return 0;
} else if (pass1 != NULL) {
*pass1 = NULL;
}
if (arg2 != NULL) {
*pass2 = app_get_pass(arg2, same ? 2 : 0);
if (*pass2 == NULL)
return 0;
} else if (pass2 != NULL) {
*pass2 = NULL;
}
return 1;
}
static char *app_get_pass(const char *arg, int keepbio)
{
static BIO *pwdbio = NULL;
char *tmp, tpass[APP_PASS_LEN];
int i;
/* PASS_SOURCE_SIZE_MAX = max number of chars before ':' in below strings */
if (strncmp(arg, "pass:", 5) == 0)
return OPENSSL_strdup(arg + 5);
if (strncmp(arg, "env:", 4) == 0) {
tmp = getenv(arg + 4);
if (tmp == NULL) {
BIO_printf(bio_err, "No environment variable %s\n", arg + 4);
return NULL;
}
return OPENSSL_strdup(tmp);
}
if (!keepbio || pwdbio == NULL) {
if (strncmp(arg, "file:", 5) == 0) {
pwdbio = BIO_new_file(arg + 5, "r");
if (pwdbio == NULL) {
BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
return NULL;
}
#if !defined(_WIN32)
/*
* Under _WIN32, which covers even Win64 and CE, file
* descriptors referenced by BIO_s_fd are not inherited
* by child process and therefore below is not an option.
* It could have been an option if bss_fd.c was operating
* on real Windows descriptors, such as those obtained
* with CreateFile.
*/
} else if (strncmp(arg, "fd:", 3) == 0) {
BIO *btmp;
i = atoi(arg + 3);
if (i >= 0)
pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
if ((i < 0) || pwdbio == NULL) {
BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
return NULL;
}
/*
* Can't do BIO_gets on an fd BIO so add a buffering BIO
*/
btmp = BIO_new(BIO_f_buffer());
if (btmp == NULL) {
BIO_free_all(pwdbio);
pwdbio = NULL;
BIO_printf(bio_err, "Out of memory\n");
return NULL;
}
pwdbio = BIO_push(btmp, pwdbio);
#endif
} else if (strcmp(arg, "stdin") == 0) {
unbuffer(stdin);
pwdbio = dup_bio_in(FORMAT_TEXT);
if (pwdbio == NULL) {
BIO_printf(bio_err, "Can't open BIO for stdin\n");
return NULL;
}
} else {
/* argument syntax error; do not reveal too much about arg */
tmp = strchr(arg, ':');
if (tmp == NULL || tmp - arg > PASS_SOURCE_SIZE_MAX)
BIO_printf(bio_err,
"Invalid password argument, missing ':' within the first %d chars\n",
PASS_SOURCE_SIZE_MAX + 1);
else
BIO_printf(bio_err,
"Invalid password argument, starting with \"%.*s\"\n",
(int)(tmp - arg + 1), arg);
return NULL;
}
}
i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
if (keepbio != 1) {
BIO_free_all(pwdbio);
pwdbio = NULL;
}
if (i <= 0) {
BIO_printf(bio_err, "Error reading password from BIO\n");
return NULL;
}
tmp = strchr(tpass, '\n');
if (tmp != NULL)
*tmp = 0;
return OPENSSL_strdup(tpass);
}
CONF *app_load_config_bio(BIO *in, const char *filename)
{
long errorline = -1;
CONF *conf;
int i;
conf = NCONF_new_ex(app_get0_libctx(), NULL);
i = NCONF_load_bio(conf, in, &errorline);
if (i > 0)
return conf;
if (errorline <= 0) {
BIO_printf(bio_err, "%s: Can't load ", opt_getprog());
} else {
BIO_printf(bio_err, "%s: Error on line %ld of ", opt_getprog(),
errorline);
}
if (filename != NULL)
BIO_printf(bio_err, "config file \"%s\"\n", filename);
else
BIO_printf(bio_err, "config input");
NCONF_free(conf);
return NULL;
}
CONF *app_load_config_verbose(const char *filename, int verbose)
{
if (verbose) {
if (*filename == '\0')
BIO_printf(bio_err, "No configuration used\n");
else
BIO_printf(bio_err, "Using configuration from %s\n", filename);
}
return app_load_config_internal(filename, 0);
}
CONF *app_load_config_internal(const char *filename, int quiet)
{
BIO *in;
CONF *conf;
if (filename == NULL || *filename != '\0') {
if ((in = bio_open_default_(filename, 'r', FORMAT_TEXT, quiet)) == NULL)
return NULL;
conf = app_load_config_bio(in, filename);
BIO_free(in);
} else {
/* Return empty config if filename is empty string. */
conf = NCONF_new_ex(app_get0_libctx(), NULL);
}
return conf;
}
int app_load_modules(const CONF *config)
{
CONF *to_free = NULL;
if (config == NULL)
config = to_free = app_load_config_quiet(default_config_file);
if (config == NULL)
return 1;
if (CONF_modules_load(config, NULL, 0) <= 0) {
BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
ERR_print_errors(bio_err);
NCONF_free(to_free);
return 0;
}
NCONF_free(to_free);
return 1;
}
int add_oid_section(CONF *conf)
{
char *p;
STACK_OF(CONF_VALUE) *sktmp;
CONF_VALUE *cnf;
int i;
if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
ERR_clear_error();
return 1;
}
if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
BIO_printf(bio_err, "problem loading oid section %s\n", p);
return 0;
}
for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
cnf = sk_CONF_VALUE_value(sktmp, i);
if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
BIO_printf(bio_err, "problem creating object %s=%s\n",
cnf->name, cnf->value);
return 0;
}
}
return 1;
}
CONF *app_load_config_modules(const char *configfile)
{
CONF *conf = NULL;
if (configfile != NULL) {
if ((conf = app_load_config_verbose(configfile, 1)) == NULL)
return NULL;
if (configfile != default_config_file && !app_load_modules(conf)) {
NCONF_free(conf);
conf = NULL;
}
}
return conf;
}
#define IS_HTTP(uri) ((uri) != NULL \
&& strncmp(uri, OSSL_HTTP_PREFIX, strlen(OSSL_HTTP_PREFIX)) == 0)
#define IS_HTTPS(uri) ((uri) != NULL \
&& strncmp(uri, OSSL_HTTPS_PREFIX, strlen(OSSL_HTTPS_PREFIX)) == 0)
X509 *load_cert_pass(const char *uri, int format, int maybe_stdin,
const char *pass, const char *desc)
{
X509 *cert = NULL;
if (desc == NULL)
desc = "certificate";
if (IS_HTTPS(uri)) {
BIO_printf(bio_err, "Loading %s over HTTPS is unsupported\n", desc);
} else if (IS_HTTP(uri)) {
cert = X509_load_http(uri, NULL, NULL, 0 /* timeout */);
if (cert == NULL) {
ERR_print_errors(bio_err);
BIO_printf(bio_err, "Unable to load %s from %s\n", desc, uri);
}
} else {
(void)load_key_certs_crls(uri, format, maybe_stdin, pass, desc,
NULL, NULL, NULL, &cert, NULL, NULL, NULL);
}
return cert;
}
X509_CRL *load_crl(const char *uri, int format, int maybe_stdin,
const char *desc)
{
X509_CRL *crl = NULL;
if (desc == NULL)
desc = "CRL";
if (IS_HTTPS(uri)) {
BIO_printf(bio_err, "Loading %s over HTTPS is unsupported\n", desc);
} else if (IS_HTTP(uri)) {
crl = X509_CRL_load_http(uri, NULL, NULL, 0 /* timeout */);
if (crl == NULL) {
ERR_print_errors(bio_err);
BIO_printf(bio_err, "Unable to load %s from %s\n", desc, uri);
}
} else {
(void)load_key_certs_crls(uri, format, maybe_stdin, NULL, desc,
NULL, NULL, NULL, NULL, NULL, &crl, NULL);
}
return crl;
}
X509_REQ *load_csr(const char *file, int format, const char *desc)
{
X509_REQ *req = NULL;
BIO *in;
if (format == FORMAT_UNDEF)
format = FORMAT_PEM;
if (desc == NULL)
desc = "CSR";
in = bio_open_default(file, 'r', format);
if (in == NULL)
goto end;
if (format == FORMAT_ASN1)
req = d2i_X509_REQ_bio(in, NULL);
else if (format == FORMAT_PEM)
req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
else
print_format_error(format, OPT_FMT_PEMDER);
end:
if (req == NULL) {
ERR_print_errors(bio_err);
BIO_printf(bio_err, "Unable to load %s\n", desc);
}
BIO_free(in);
return req;
}
void cleanse(char *str)
{
if (str != NULL)
OPENSSL_cleanse(str, strlen(str));
}
void clear_free(char *str)
{
if (str != NULL)
OPENSSL_clear_free(str, strlen(str));
}
EVP_PKEY *load_key(const char *uri, int format, int may_stdin,
const char *pass, ENGINE *e, const char *desc)
{
EVP_PKEY *pkey = NULL;
char *allocated_uri = NULL;
if (desc == NULL)
desc = "private key";
if (format == FORMAT_ENGINE) {
uri = allocated_uri = make_engine_uri(e, uri, desc);
}
(void)load_key_certs_crls(uri, format, may_stdin, pass, desc,
&pkey, NULL, NULL, NULL, NULL, NULL, NULL);
OPENSSL_free(allocated_uri);
return pkey;
}
EVP_PKEY *load_pubkey(const char *uri, int format, int maybe_stdin,
const char *pass, ENGINE *e, const char *desc)
{
EVP_PKEY *pkey = NULL;
char *allocated_uri = NULL;
if (desc == NULL)
desc = "public key";
if (format == FORMAT_ENGINE) {
uri = allocated_uri = make_engine_uri(e, uri, desc);
}
(void)load_key_certs_crls(uri, format, maybe_stdin, pass, desc,
NULL, &pkey, NULL, NULL, NULL, NULL, NULL);
OPENSSL_free(allocated_uri);
return pkey;
}
EVP_PKEY *load_keyparams_suppress(const char *uri, int format, int maybe_stdin,
const char *keytype, const char *desc,
int suppress_decode_errors)
{
EVP_PKEY *params = NULL;
BIO *bio_bak = bio_err;
if (desc == NULL)
desc = "key parameters";
if (suppress_decode_errors)
bio_err = NULL;
(void)load_key_certs_crls(uri, format, maybe_stdin, NULL, desc,
NULL, NULL, ¶ms, NULL, NULL, NULL, NULL);
if (params != NULL && keytype != NULL && !EVP_PKEY_is_a(params, keytype)) {
ERR_print_errors(bio_err);
BIO_printf(bio_err,
"Unable to load %s from %s (unexpected parameters type)\n",
desc, uri);
EVP_PKEY_free(params);
params = NULL;
}
bio_err = bio_bak;
return params;
}
EVP_PKEY *load_keyparams(const char *uri, int format, int maybe_stdin,
const char *keytype, const char *desc)
{
return load_keyparams_suppress(uri, format, maybe_stdin, keytype, desc, 0);
}
void app_bail_out(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
BIO_vprintf(bio_err, fmt, args);
va_end(args);
ERR_print_errors(bio_err);
exit(EXIT_FAILURE);
}
void *app_malloc(size_t sz, const char *what)
{
void *vp = OPENSSL_malloc(sz);
if (vp == NULL)
app_bail_out("%s: Could not allocate %zu bytes for %s\n",
opt_getprog(), sz, what);
return vp;
}
char *next_item(char *opt) /* in list separated by comma and/or space */
{
/* advance to separator (comma or whitespace), if any */
while (*opt != ',' && !isspace(*opt) && *opt != '\0')
opt++;
if (*opt != '\0') {
/* terminate current item */
*opt++ = '\0';
/* skip over any whitespace after separator */
while (isspace(*opt))
opt++;
}
return *opt == '\0' ? NULL : opt; /* NULL indicates end of input */
}
static void warn_cert_msg(const char *uri, X509 *cert, const char *msg)
{
char *subj = X509_NAME_oneline(X509_get_subject_name(cert), NULL, 0);
BIO_printf(bio_err, "Warning: certificate from '%s' with subject '%s' %s\n",
uri, subj, msg);
OPENSSL_free(subj);
}
static void warn_cert(const char *uri, X509 *cert, int warn_EE,
X509_VERIFY_PARAM *vpm)
{
uint32_t ex_flags = X509_get_extension_flags(cert);
int res = X509_cmp_timeframe(vpm, X509_get0_notBefore(cert),
X509_get0_notAfter(cert));
if (res != 0)
warn_cert_msg(uri, cert, res > 0 ? "has expired" : "not yet valid");
if (warn_EE && (ex_flags & EXFLAG_V1) == 0 && (ex_flags & EXFLAG_CA) == 0)
warn_cert_msg(uri, cert, "is not a CA cert");
}
static void warn_certs(const char *uri, STACK_OF(X509) *certs, int warn_EE,
X509_VERIFY_PARAM *vpm)
{
int i;
for (i = 0; i < sk_X509_num(certs); i++)
warn_cert(uri, sk_X509_value(certs, i), warn_EE, vpm);
}
int load_cert_certs(const char *uri,
X509 **pcert, STACK_OF(X509) **pcerts,
int exclude_http, const char *pass, const char *desc,
X509_VERIFY_PARAM *vpm)
{
int ret = 0;
char *pass_string;
if (desc == NULL)
desc = pcerts == NULL ? "certificate" : "certificates";
if (exclude_http && (OPENSSL_strncasecmp(uri, "http://", 7) == 0
|| OPENSSL_strncasecmp(uri, "https://", 8) == 0)) {
BIO_printf(bio_err, "error: HTTP retrieval not allowed for %s\n", desc);
return ret;
}
pass_string = get_passwd(pass, desc);
ret = load_key_certs_crls(uri, FORMAT_UNDEF, 0, pass_string, desc,
NULL, NULL, NULL, pcert, pcerts, NULL, NULL);
clear_free(pass_string);
if (ret) {
if (pcert != NULL)
warn_cert(uri, *pcert, 0, vpm);
if (pcerts != NULL)
warn_certs(uri, *pcerts, 1, vpm);
} else {
if (pcerts != NULL) {
sk_X509_pop_free(*pcerts, X509_free);
*pcerts = NULL;
}
}
return ret;
}
STACK_OF(X509) *load_certs_multifile(char *files, const char *pass,
const char *desc, X509_VERIFY_PARAM *vpm)
{
STACK_OF(X509) *certs = NULL;
STACK_OF(X509) *result = sk_X509_new_null();
if (files == NULL)
goto err;
if (result == NULL)
goto oom;
while (files != NULL) {
char *next = next_item(files);
if (!load_cert_certs(files, NULL, &certs, 0, pass, desc, vpm))
goto err;
if (!X509_add_certs(result, certs,
X509_ADD_FLAG_UP_REF | X509_ADD_FLAG_NO_DUP))
goto oom;
sk_X509_pop_free(certs, X509_free);
certs = NULL;
files = next;
}
return result;
oom:
BIO_printf(bio_err, "out of memory\n");
err:
sk_X509_pop_free(certs, X509_free);
sk_X509_pop_free(result, X509_free);
return NULL;
}
static X509_STORE *sk_X509_to_store(X509_STORE *store /* may be NULL */,
const STACK_OF(X509) *certs /* may NULL */)
{
int i;
if (store == NULL)
store = X509_STORE_new();
if (store == NULL)
return NULL;
for (i = 0; i < sk_X509_num(certs); i++) {
if (!X509_STORE_add_cert(store, sk_X509_value(certs, i))) {
X509_STORE_free(store);
return NULL;
}
}
return store;
}
/*
* Create cert store structure with certificates read from given file(s).
* Returns pointer to created X509_STORE on success, NULL on error.
*/
X509_STORE *load_certstore(char *input, const char *pass, const char *desc,
X509_VERIFY_PARAM *vpm)
{
X509_STORE *store = NULL;
STACK_OF(X509) *certs = NULL;
while (input != NULL) {
char *next = next_item(input);
int ok;
if (!load_cert_certs(input, NULL, &certs, 1, pass, desc, vpm)) {
X509_STORE_free(store);
return NULL;
}
ok = (store = sk_X509_to_store(store, certs)) != NULL;
sk_X509_pop_free(certs, X509_free);
certs = NULL;
if (!ok)
return NULL;
input = next;
}
return store;
}
/*
* Initialize or extend, if *certs != NULL, a certificate stack.
* The caller is responsible for freeing *certs if its value is left not NULL.
*/
int load_certs(const char *uri, int maybe_stdin, STACK_OF(X509) **certs,
const char *pass, const char *desc)
{
int ret, was_NULL = *certs == NULL;
if (desc == NULL)
desc = "certificates";
ret = load_key_certs_crls(uri, FORMAT_UNDEF, maybe_stdin, pass, desc,
NULL, NULL, NULL, NULL, certs, NULL, NULL);
if (!ret && was_NULL) {
sk_X509_pop_free(*certs, X509_free);
*certs = NULL;
}
return ret;
}
/*
* Initialize or extend, if *crls != NULL, a certificate stack.
* The caller is responsible for freeing *crls if its value is left not NULL.
*/
int load_crls(const char *uri, STACK_OF(X509_CRL) **crls,
const char *pass, const char *desc)
{
int ret, was_NULL = *crls == NULL;
if (desc == NULL)
desc = "CRLs";
ret = load_key_certs_crls(uri, FORMAT_UNDEF, 0, pass, desc,
NULL, NULL, NULL, NULL, NULL, NULL, crls);
if (!ret && was_NULL) {
sk_X509_CRL_pop_free(*crls, X509_CRL_free);
*crls = NULL;
}
return ret;
}
static const char *format2string(int format)
{
switch(format) {
case FORMAT_PEM:
return "PEM";
case FORMAT_ASN1:
return "DER";
}
return NULL;
}
/* Set type expectation, but clear it if objects of different types expected. */
#define SET_EXPECT(expect, val) ((expect) = (expect) < 0 ? (val) : ((expect) == (val) ? (val) : 0))
/*
* Load those types of credentials for which the result pointer is not NULL.
* Reads from stdio if uri is NULL and maybe_stdin is nonzero.
* For non-NULL ppkey, pcert, and pcrl the first suitable value found is loaded.
* If pcerts is non-NULL and *pcerts == NULL then a new cert list is allocated.
* If pcerts is non-NULL then all available certificates are appended to *pcerts
* except any certificate assigned to *pcert.
* If pcrls is non-NULL and *pcrls == NULL then a new list of CRLs is allocated.
* If pcrls is non-NULL then all available CRLs are appended to *pcerts
* except any CRL assigned to *pcrl.
* In any case (also on error) the caller is responsible for freeing all members
* of *pcerts and *pcrls (as far as they are not NULL).
*/
int load_key_certs_crls(const char *uri, int format, int maybe_stdin,
const char *pass, const char *desc,
EVP_PKEY **ppkey, EVP_PKEY **ppubkey,
EVP_PKEY **pparams,
X509 **pcert, STACK_OF(X509) **pcerts,
X509_CRL **pcrl, STACK_OF(X509_CRL) **pcrls)
{
PW_CB_DATA uidata;
OSSL_STORE_CTX *ctx = NULL;
OSSL_LIB_CTX *libctx = app_get0_libctx();
const char *propq = app_get0_propq();
int ncerts = 0;
int ncrls = 0;
const char *failed =
ppkey != NULL ? "key" : ppubkey != NULL ? "public key" :
pparams != NULL ? "params" : pcert != NULL ? "cert" :
pcrl != NULL ? "CRL" : pcerts != NULL ? "certs" :
pcrls != NULL ? "CRLs" : NULL;
int cnt_expectations = 0;
int expect = -1;
const char *input_type;
OSSL_PARAM itp[2];
const OSSL_PARAM *params = NULL;
ERR_set_mark();
if (ppkey != NULL) {
*ppkey = NULL;
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_PKEY);
}
if (ppubkey != NULL) {
*ppubkey = NULL;
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_PUBKEY);
}
if (pparams != NULL) {
*pparams = NULL;
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_PARAMS);
}
if (pcert != NULL) {
*pcert = NULL;
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_CERT);
}
if (pcerts != NULL) {
if (*pcerts == NULL && (*pcerts = sk_X509_new_null()) == NULL) {
BIO_printf(bio_err, "Out of memory loading");
goto end;
}
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_CERT);
}
if (pcrl != NULL) {
*pcrl = NULL;
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_CRL);
}
if (pcrls != NULL) {
if (*pcrls == NULL && (*pcrls = sk_X509_CRL_new_null()) == NULL) {
BIO_printf(bio_err, "Out of memory loading");
goto end;
}
cnt_expectations++;
SET_EXPECT(expect, OSSL_STORE_INFO_CRL);
}
if (cnt_expectations == 0) {
BIO_printf(bio_err, "Internal error: no expectation to load");
failed = "anything";
goto end;
}
uidata.password = pass;
uidata.prompt_info = uri;
if ((input_type = format2string(format)) != NULL) {
itp[0] = OSSL_PARAM_construct_utf8_string(OSSL_STORE_PARAM_INPUT_TYPE,
(char *)input_type, 0);
itp[1] = OSSL_PARAM_construct_end();
params = itp;
}
if (uri == NULL) {
BIO *bio;
if (!maybe_stdin) {
BIO_printf(bio_err, "No filename or uri specified for loading");
goto end;
}
uri = "<stdin>";
unbuffer(stdin);
bio = BIO_new_fp(stdin, 0);
if (bio != NULL) {
ctx = OSSL_STORE_attach(bio, "file", libctx, propq,
get_ui_method(), &uidata, params,
NULL, NULL);
BIO_free(bio);
}
} else {
ctx = OSSL_STORE_open_ex(uri, libctx, propq, get_ui_method(), &uidata,
params, NULL, NULL);
}
if (ctx == NULL) {
BIO_printf(bio_err, "Could not open file or uri for loading");
goto end;
}
if (expect > 0 && !OSSL_STORE_expect(ctx, expect))
goto end;
failed = NULL;
while (cnt_expectations > 0 && !OSSL_STORE_eof(ctx)) {
OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
int type, ok = 1;
/*
* This can happen (for example) if we attempt to load a file with
* multiple different types of things in it - but the thing we just
* tried to load wasn't one of the ones we wanted, e.g. if we're trying
* to load a certificate but the file has both the private key and the
* certificate in it. We just retry until eof.
*/
if (info == NULL) {
continue;
}
type = OSSL_STORE_INFO_get_type(info);
switch (type) {
case OSSL_STORE_INFO_PKEY:
if (ppkey != NULL && *ppkey == NULL) {
ok = (*ppkey = OSSL_STORE_INFO_get1_PKEY(info)) != NULL;
cnt_expectations -= ok;
}
/*
* An EVP_PKEY with private parts also holds the public parts,
* so if the caller asked for a public key, and we got a private
* key, we can still pass it back.
*/
if (ok && ppubkey != NULL && *ppubkey == NULL) {
ok = ((*ppubkey = OSSL_STORE_INFO_get1_PKEY(info)) != NULL);
cnt_expectations -= ok;
}
break;
case OSSL_STORE_INFO_PUBKEY:
if (ppubkey != NULL && *ppubkey == NULL) {