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58964a49 RE |
1 | /* crypto/pkcs7/verify.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
d02b48c6 RE |
58 | #include <stdio.h> |
59 | #include "asn1.h" | |
60 | #include "bio.h" | |
61 | #include "x509.h" | |
62 | #include "pem.h" | |
63 | ||
64 | int verify_callback(int ok, X509_STORE_CTX *ctx); | |
65 | ||
66 | BIO *bio_err=NULL; | |
dfeab068 | 67 | BIO *bio_out=NULL; |
d02b48c6 RE |
68 | |
69 | main(argc,argv) | |
70 | int argc; | |
71 | char *argv[]; | |
72 | { | |
73 | X509 *x509,*x; | |
74 | PKCS7 *p7; | |
75 | PKCS7_SIGNED *s; | |
76 | PKCS7_SIGNER_INFO *si; | |
77 | PKCS7_ISSUER_AND_SERIAL *ias; | |
78 | X509_STORE_CTX cert_ctx; | |
79 | X509_STORE *cert_store=NULL; | |
80 | X509_LOOKUP *lookup=NULL; | |
81 | BIO *data,*detached=NULL,*p7bio=NULL; | |
82 | char buf[1024*4]; | |
83 | unsigned char *p,*pp; | |
84 | int i,j,printit=0; | |
85 | STACK *sk; | |
86 | ||
87 | bio_err=BIO_new_fp(stderr,BIO_NOCLOSE); | |
dfeab068 | 88 | bio_out=BIO_new_fp(stdout,BIO_NOCLOSE); |
d02b48c6 RE |
89 | EVP_add_digest(EVP_md2()); |
90 | EVP_add_digest(EVP_md5()); | |
91 | EVP_add_digest(EVP_sha1()); | |
92 | EVP_add_digest(EVP_mdc2()); | |
93 | ||
94 | data=BIO_new(BIO_s_file()); | |
95 | again: | |
96 | pp=NULL; | |
97 | while (argc > 1) | |
98 | { | |
99 | argc--; | |
100 | argv++; | |
101 | if (strcmp(argv[0],"-p") == 0) | |
102 | { | |
103 | printit=1; | |
104 | } | |
105 | else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2)) | |
106 | { | |
107 | detached=BIO_new(BIO_s_file()); | |
108 | if (!BIO_read_filename(detached,argv[1])) | |
109 | goto err; | |
110 | argc--; | |
111 | argv++; | |
112 | } | |
113 | else | |
114 | { | |
115 | pp=argv[0]; | |
116 | if (!BIO_read_filename(data,argv[0])) | |
117 | goto err; | |
118 | } | |
119 | } | |
120 | ||
121 | if (pp == NULL) | |
122 | BIO_set_fp(data,stdin,BIO_NOCLOSE); | |
123 | ||
124 | ||
125 | /* Load the PKCS7 object from a file */ | |
126 | if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL)) == NULL) goto err; | |
127 | ||
128 | /* This stuff is being setup for certificate verification. | |
129 | * When using SSL, it could be replaced with a | |
130 | * cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */ | |
131 | cert_store=X509_STORE_new(); | |
132 | X509_STORE_set_default_paths(cert_store); | |
133 | X509_STORE_load_locations(cert_store,NULL,"../../certs"); | |
134 | X509_STORE_set_verify_cb_func(cert_store,verify_callback); | |
135 | ||
dfeab068 | 136 | ERR_clear_error(); |
d02b48c6 RE |
137 | |
138 | /* We need to process the data */ | |
dfeab068 | 139 | if ((PKCS7_get_detached(p7) || detached)) |
d02b48c6 RE |
140 | { |
141 | if (detached == NULL) | |
142 | { | |
143 | printf("no data to verify the signature on\n"); | |
144 | exit(1); | |
145 | } | |
146 | else | |
147 | p7bio=PKCS7_dataInit(p7,detached); | |
148 | } | |
149 | else | |
150 | { | |
151 | p7bio=PKCS7_dataInit(p7,NULL); | |
152 | } | |
153 | ||
154 | /* We now have to 'read' from p7bio to calculate digests etc. */ | |
155 | for (;;) | |
156 | { | |
157 | i=BIO_read(p7bio,buf,sizeof(buf)); | |
158 | /* print it? */ | |
159 | if (i <= 0) break; | |
160 | } | |
161 | ||
162 | /* We can now verify signatures */ | |
163 | sk=PKCS7_get_signer_info(p7); | |
164 | if (sk == NULL) | |
165 | { | |
166 | printf("there are no signatures on this data\n"); | |
167 | exit(1); | |
168 | } | |
169 | ||
170 | /* Ok, first we need to, for each subject entry, see if we can verify */ | |
171 | for (i=0; i<sk_num(sk); i++) | |
172 | { | |
dfeab068 RE |
173 | ASN1_UTCTIME *tm; |
174 | char *str1,*str2; | |
175 | ||
d02b48c6 RE |
176 | si=(PKCS7_SIGNER_INFO *)sk_value(sk,i); |
177 | i=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si); | |
178 | if (i <= 0) | |
179 | goto err; | |
dfeab068 RE |
180 | printf("signer info\n"); |
181 | if ((tm=get_signed_time(si)) != NULL) | |
182 | { | |
183 | BIO_printf(bio_out,"Signed time:"); | |
184 | ASN1_UTCTIME_print(bio_out,tm); | |
185 | ASN1_UTCTIME_free(tm); | |
186 | BIO_printf(bio_out,"\n"); | |
187 | } | |
188 | if (get_signed_seq2string(si,&str1,&str2)) | |
189 | { | |
190 | BIO_printf(bio_out,"String 1 is %s\n",str1); | |
191 | BIO_printf(bio_out,"String 2 is %s\n",str2); | |
192 | } | |
193 | ||
d02b48c6 RE |
194 | } |
195 | ||
196 | X509_STORE_free(cert_store); | |
197 | ||
198 | printf("done\n"); | |
199 | exit(0); | |
200 | err: | |
201 | ERR_load_crypto_strings(); | |
202 | ERR_print_errors_fp(stderr); | |
203 | exit(1); | |
204 | } | |
205 | ||
206 | /* should be X509 * but we can just have them as char *. */ | |
207 | int verify_callback(ok, ctx) | |
208 | int ok; | |
209 | X509_STORE_CTX *ctx; | |
210 | { | |
211 | char buf[256]; | |
212 | X509 *err_cert; | |
213 | int err,depth; | |
214 | ||
215 | err_cert=X509_STORE_CTX_get_current_cert(ctx); | |
216 | err= X509_STORE_CTX_get_error(ctx); | |
217 | depth= X509_STORE_CTX_get_error_depth(ctx); | |
218 | ||
219 | X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256); | |
220 | BIO_printf(bio_err,"depth=%d %s\n",depth,buf); | |
221 | if (!ok) | |
222 | { | |
223 | BIO_printf(bio_err,"verify error:num=%d:%s\n",err, | |
224 | X509_verify_cert_error_string(err)); | |
225 | if (depth < 6) | |
226 | { | |
227 | ok=1; | |
228 | X509_STORE_CTX_set_error(ctx,X509_V_OK); | |
229 | } | |
230 | else | |
231 | { | |
232 | ok=0; | |
233 | X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_LONG); | |
234 | } | |
235 | } | |
236 | switch (ctx->error) | |
237 | { | |
238 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
239 | X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256); | |
240 | BIO_printf(bio_err,"issuer= %s\n",buf); | |
241 | break; | |
242 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
243 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
244 | BIO_printf(bio_err,"notBefore="); | |
245 | ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert)); | |
246 | BIO_printf(bio_err,"\n"); | |
247 | break; | |
248 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
249 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
250 | BIO_printf(bio_err,"notAfter="); | |
251 | ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert)); | |
252 | BIO_printf(bio_err,"\n"); | |
253 | break; | |
254 | } | |
255 | BIO_printf(bio_err,"verify return:%d\n",ok); | |
256 | return(ok); | |
257 | } |