1*0Sstevel@tonic-gate /* crypto/pkcs7/verify.c */
2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3*0Sstevel@tonic-gate * All rights reserved.
4*0Sstevel@tonic-gate *
5*0Sstevel@tonic-gate * This package is an SSL implementation written
6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com).
7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as
10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions
11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA,
12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms
14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15*0Sstevel@tonic-gate *
16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in
17*0Sstevel@tonic-gate * the code are not to be removed.
18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution
19*0Sstevel@tonic-gate * as the author of the parts of the library used.
20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or
21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package.
22*0Sstevel@tonic-gate *
23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions
25*0Sstevel@tonic-gate * are met:
26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright
27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
32*0Sstevel@tonic-gate * must display the following acknowledgement:
33*0Sstevel@tonic-gate * "This product includes cryptographic software written by
34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)"
35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library
36*0Sstevel@tonic-gate * being used are not cryptographic related :-).
37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from
38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement:
39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40*0Sstevel@tonic-gate *
41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51*0Sstevel@tonic-gate * SUCH DAMAGE.
52*0Sstevel@tonic-gate *
53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or
54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be
55*0Sstevel@tonic-gate * copied and put under another distribution licence
56*0Sstevel@tonic-gate * [including the GNU Public Licence.]
57*0Sstevel@tonic-gate */
58*0Sstevel@tonic-gate #include <stdio.h>
59*0Sstevel@tonic-gate #include <string.h>
60*0Sstevel@tonic-gate #include <openssl/bio.h>
61*0Sstevel@tonic-gate #include <openssl/asn1.h>
62*0Sstevel@tonic-gate #include <openssl/x509.h>
63*0Sstevel@tonic-gate #include <openssl/pem.h>
64*0Sstevel@tonic-gate #include <openssl/err.h>
65*0Sstevel@tonic-gate #include "example.h"
66*0Sstevel@tonic-gate
67*0Sstevel@tonic-gate int verify_callback(int ok, X509_STORE_CTX *ctx);
68*0Sstevel@tonic-gate
69*0Sstevel@tonic-gate BIO *bio_err=NULL;
70*0Sstevel@tonic-gate BIO *bio_out=NULL;
71*0Sstevel@tonic-gate
main(argc,argv)72*0Sstevel@tonic-gate int main(argc,argv)
73*0Sstevel@tonic-gate int argc;
74*0Sstevel@tonic-gate char *argv[];
75*0Sstevel@tonic-gate {
76*0Sstevel@tonic-gate PKCS7 *p7;
77*0Sstevel@tonic-gate PKCS7_SIGNER_INFO *si;
78*0Sstevel@tonic-gate X509_STORE_CTX cert_ctx;
79*0Sstevel@tonic-gate X509_STORE *cert_store=NULL;
80*0Sstevel@tonic-gate BIO *data,*detached=NULL,*p7bio=NULL;
81*0Sstevel@tonic-gate char buf[1024*4];
82*0Sstevel@tonic-gate char *pp;
83*0Sstevel@tonic-gate int i,printit=0;
84*0Sstevel@tonic-gate STACK_OF(PKCS7_SIGNER_INFO) *sk;
85*0Sstevel@tonic-gate
86*0Sstevel@tonic-gate bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
87*0Sstevel@tonic-gate bio_out=BIO_new_fp(stdout,BIO_NOCLOSE);
88*0Sstevel@tonic-gate #ifndef OPENSSL_NO_MD2
89*0Sstevel@tonic-gate EVP_add_digest(EVP_md2());
90*0Sstevel@tonic-gate #endif
91*0Sstevel@tonic-gate #ifndef OPENSSL_NO_MD5
92*0Sstevel@tonic-gate EVP_add_digest(EVP_md5());
93*0Sstevel@tonic-gate #endif
94*0Sstevel@tonic-gate #ifndef OPENSSL_NO_SHA1
95*0Sstevel@tonic-gate EVP_add_digest(EVP_sha1());
96*0Sstevel@tonic-gate #endif
97*0Sstevel@tonic-gate #ifndef OPENSSL_NO_MDC2
98*0Sstevel@tonic-gate EVP_add_digest(EVP_mdc2());
99*0Sstevel@tonic-gate #endif
100*0Sstevel@tonic-gate
101*0Sstevel@tonic-gate data=BIO_new(BIO_s_file());
102*0Sstevel@tonic-gate
103*0Sstevel@tonic-gate pp=NULL;
104*0Sstevel@tonic-gate while (argc > 1)
105*0Sstevel@tonic-gate {
106*0Sstevel@tonic-gate argc--;
107*0Sstevel@tonic-gate argv++;
108*0Sstevel@tonic-gate if (strcmp(argv[0],"-p") == 0)
109*0Sstevel@tonic-gate {
110*0Sstevel@tonic-gate printit=1;
111*0Sstevel@tonic-gate }
112*0Sstevel@tonic-gate else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2))
113*0Sstevel@tonic-gate {
114*0Sstevel@tonic-gate detached=BIO_new(BIO_s_file());
115*0Sstevel@tonic-gate if (!BIO_read_filename(detached,argv[1]))
116*0Sstevel@tonic-gate goto err;
117*0Sstevel@tonic-gate argc--;
118*0Sstevel@tonic-gate argv++;
119*0Sstevel@tonic-gate }
120*0Sstevel@tonic-gate else
121*0Sstevel@tonic-gate {
122*0Sstevel@tonic-gate pp=argv[0];
123*0Sstevel@tonic-gate if (!BIO_read_filename(data,argv[0]))
124*0Sstevel@tonic-gate goto err;
125*0Sstevel@tonic-gate }
126*0Sstevel@tonic-gate }
127*0Sstevel@tonic-gate
128*0Sstevel@tonic-gate if (pp == NULL)
129*0Sstevel@tonic-gate BIO_set_fp(data,stdin,BIO_NOCLOSE);
130*0Sstevel@tonic-gate
131*0Sstevel@tonic-gate
132*0Sstevel@tonic-gate /* Load the PKCS7 object from a file */
133*0Sstevel@tonic-gate if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL,NULL)) == NULL) goto err;
134*0Sstevel@tonic-gate
135*0Sstevel@tonic-gate /* This stuff is being setup for certificate verification.
136*0Sstevel@tonic-gate * When using SSL, it could be replaced with a
137*0Sstevel@tonic-gate * cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */
138*0Sstevel@tonic-gate cert_store=X509_STORE_new();
139*0Sstevel@tonic-gate X509_STORE_set_default_paths(cert_store);
140*0Sstevel@tonic-gate X509_STORE_load_locations(cert_store,NULL,"../../certs");
141*0Sstevel@tonic-gate X509_STORE_set_verify_cb_func(cert_store,verify_callback);
142*0Sstevel@tonic-gate
143*0Sstevel@tonic-gate ERR_clear_error();
144*0Sstevel@tonic-gate
145*0Sstevel@tonic-gate /* We need to process the data */
146*0Sstevel@tonic-gate if ((PKCS7_get_detached(p7) || detached))
147*0Sstevel@tonic-gate {
148*0Sstevel@tonic-gate if (detached == NULL)
149*0Sstevel@tonic-gate {
150*0Sstevel@tonic-gate printf("no data to verify the signature on\n");
151*0Sstevel@tonic-gate exit(1);
152*0Sstevel@tonic-gate }
153*0Sstevel@tonic-gate else
154*0Sstevel@tonic-gate p7bio=PKCS7_dataInit(p7,detached);
155*0Sstevel@tonic-gate }
156*0Sstevel@tonic-gate else
157*0Sstevel@tonic-gate {
158*0Sstevel@tonic-gate p7bio=PKCS7_dataInit(p7,NULL);
159*0Sstevel@tonic-gate }
160*0Sstevel@tonic-gate
161*0Sstevel@tonic-gate /* We now have to 'read' from p7bio to calculate digests etc. */
162*0Sstevel@tonic-gate for (;;)
163*0Sstevel@tonic-gate {
164*0Sstevel@tonic-gate i=BIO_read(p7bio,buf,sizeof(buf));
165*0Sstevel@tonic-gate /* print it? */
166*0Sstevel@tonic-gate if (i <= 0) break;
167*0Sstevel@tonic-gate }
168*0Sstevel@tonic-gate
169*0Sstevel@tonic-gate /* We can now verify signatures */
170*0Sstevel@tonic-gate sk=PKCS7_get_signer_info(p7);
171*0Sstevel@tonic-gate if (sk == NULL)
172*0Sstevel@tonic-gate {
173*0Sstevel@tonic-gate printf("there are no signatures on this data\n");
174*0Sstevel@tonic-gate exit(1);
175*0Sstevel@tonic-gate }
176*0Sstevel@tonic-gate
177*0Sstevel@tonic-gate /* Ok, first we need to, for each subject entry, see if we can verify */
178*0Sstevel@tonic-gate for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sk); i++)
179*0Sstevel@tonic-gate {
180*0Sstevel@tonic-gate ASN1_UTCTIME *tm;
181*0Sstevel@tonic-gate char *str1,*str2;
182*0Sstevel@tonic-gate int rc;
183*0Sstevel@tonic-gate
184*0Sstevel@tonic-gate si=sk_PKCS7_SIGNER_INFO_value(sk,i);
185*0Sstevel@tonic-gate rc=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si);
186*0Sstevel@tonic-gate if (rc <= 0)
187*0Sstevel@tonic-gate goto err;
188*0Sstevel@tonic-gate printf("signer info\n");
189*0Sstevel@tonic-gate if ((tm=get_signed_time(si)) != NULL)
190*0Sstevel@tonic-gate {
191*0Sstevel@tonic-gate BIO_printf(bio_out,"Signed time:");
192*0Sstevel@tonic-gate ASN1_UTCTIME_print(bio_out,tm);
193*0Sstevel@tonic-gate ASN1_UTCTIME_free(tm);
194*0Sstevel@tonic-gate BIO_printf(bio_out,"\n");
195*0Sstevel@tonic-gate }
196*0Sstevel@tonic-gate if (get_signed_seq2string(si,&str1,&str2))
197*0Sstevel@tonic-gate {
198*0Sstevel@tonic-gate BIO_printf(bio_out,"String 1 is %s\n",str1);
199*0Sstevel@tonic-gate BIO_printf(bio_out,"String 2 is %s\n",str2);
200*0Sstevel@tonic-gate }
201*0Sstevel@tonic-gate
202*0Sstevel@tonic-gate }
203*0Sstevel@tonic-gate
204*0Sstevel@tonic-gate X509_STORE_free(cert_store);
205*0Sstevel@tonic-gate
206*0Sstevel@tonic-gate printf("done\n");
207*0Sstevel@tonic-gate exit(0);
208*0Sstevel@tonic-gate err:
209*0Sstevel@tonic-gate ERR_load_crypto_strings();
210*0Sstevel@tonic-gate ERR_print_errors_fp(stderr);
211*0Sstevel@tonic-gate exit(1);
212*0Sstevel@tonic-gate }
213*0Sstevel@tonic-gate
214*0Sstevel@tonic-gate /* should be X509 * but we can just have them as char *. */
verify_callback(int ok,X509_STORE_CTX * ctx)215*0Sstevel@tonic-gate int verify_callback(int ok, X509_STORE_CTX *ctx)
216*0Sstevel@tonic-gate {
217*0Sstevel@tonic-gate char buf[256];
218*0Sstevel@tonic-gate X509 *err_cert;
219*0Sstevel@tonic-gate int err,depth;
220*0Sstevel@tonic-gate
221*0Sstevel@tonic-gate err_cert=X509_STORE_CTX_get_current_cert(ctx);
222*0Sstevel@tonic-gate err= X509_STORE_CTX_get_error(ctx);
223*0Sstevel@tonic-gate depth= X509_STORE_CTX_get_error_depth(ctx);
224*0Sstevel@tonic-gate
225*0Sstevel@tonic-gate X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256);
226*0Sstevel@tonic-gate BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
227*0Sstevel@tonic-gate if (!ok)
228*0Sstevel@tonic-gate {
229*0Sstevel@tonic-gate BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
230*0Sstevel@tonic-gate X509_verify_cert_error_string(err));
231*0Sstevel@tonic-gate if (depth < 6)
232*0Sstevel@tonic-gate {
233*0Sstevel@tonic-gate ok=1;
234*0Sstevel@tonic-gate X509_STORE_CTX_set_error(ctx,X509_V_OK);
235*0Sstevel@tonic-gate }
236*0Sstevel@tonic-gate else
237*0Sstevel@tonic-gate {
238*0Sstevel@tonic-gate ok=0;
239*0Sstevel@tonic-gate X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_LONG);
240*0Sstevel@tonic-gate }
241*0Sstevel@tonic-gate }
242*0Sstevel@tonic-gate switch (ctx->error)
243*0Sstevel@tonic-gate {
244*0Sstevel@tonic-gate case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
245*0Sstevel@tonic-gate X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256);
246*0Sstevel@tonic-gate BIO_printf(bio_err,"issuer= %s\n",buf);
247*0Sstevel@tonic-gate break;
248*0Sstevel@tonic-gate case X509_V_ERR_CERT_NOT_YET_VALID:
249*0Sstevel@tonic-gate case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
250*0Sstevel@tonic-gate BIO_printf(bio_err,"notBefore=");
251*0Sstevel@tonic-gate ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
252*0Sstevel@tonic-gate BIO_printf(bio_err,"\n");
253*0Sstevel@tonic-gate break;
254*0Sstevel@tonic-gate case X509_V_ERR_CERT_HAS_EXPIRED:
255*0Sstevel@tonic-gate case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
256*0Sstevel@tonic-gate BIO_printf(bio_err,"notAfter=");
257*0Sstevel@tonic-gate ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
258*0Sstevel@tonic-gate BIO_printf(bio_err,"\n");
259*0Sstevel@tonic-gate break;
260*0Sstevel@tonic-gate }
261*0Sstevel@tonic-gate BIO_printf(bio_err,"verify return:%d\n",ok);
262*0Sstevel@tonic-gate return(ok);
263*0Sstevel@tonic-gate }
264