t_x509.c revision 296465 
1/* crypto/asn1/t_x509.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 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/buffer.h>
62#include <openssl/bn.h>
63#ifndef OPENSSL_NO_RSA
64# include <openssl/rsa.h>
65#endif
66#ifndef OPENSSL_NO_DSA
67# include <openssl/dsa.h>
68#endif
69#ifndef OPENSSL_NO_EC
70# include <openssl/ec.h>
71#endif
72#include <openssl/objects.h>
73#include <openssl/x509.h>
74#include <openssl/x509v3.h>
75
76#ifndef OPENSSL_NO_FP_API
77int X509_print_fp(FILE *fp, X509 *x)
78{
79    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
80}
81
82int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
83                     unsigned long cflag)
84{
85    BIO *b;
86    int ret;
87
88    if ((b = BIO_new(BIO_s_file())) == NULL) {
89        X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
90        return (0);
91    }
92    BIO_set_fp(b, fp, BIO_NOCLOSE);
93    ret = X509_print_ex(b, x, nmflag, cflag);
94    BIO_free(b);
95    return (ret);
96}
97#endif
98
99int X509_print(BIO *bp, X509 *x)
100{
101    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
102}
103
104int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
105                  unsigned long cflag)
106{
107    long l;
108    int ret = 0, i;
109    char *m = NULL, mlch = ' ';
110    int nmindent = 0;
111    X509_CINF *ci;
112    ASN1_INTEGER *bs;
113    EVP_PKEY *pkey = NULL;
114    const char *neg;
115    ASN1_STRING *str = NULL;
116
117    if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
118        mlch = '\n';
119        nmindent = 12;
120    }
121
122    if (nmflags == X509_FLAG_COMPAT)
123        nmindent = 16;
124
125    ci = x->cert_info;
126    if (!(cflag & X509_FLAG_NO_HEADER)) {
127        if (BIO_write(bp, "Certificate:\n", 13) <= 0)
128            goto err;
129        if (BIO_write(bp, "    Data:\n", 10) <= 0)
130            goto err;
131    }
132    if (!(cflag & X509_FLAG_NO_VERSION)) {
133        l = X509_get_version(x);
134        if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0)
135            goto err;
136    }
137    if (!(cflag & X509_FLAG_NO_SERIAL)) {
138
139        if (BIO_write(bp, "        Serial Number:", 22) <= 0)
140            goto err;
141
142        bs = X509_get_serialNumber(x);
143        if (bs->length <= 4) {
144            l = ASN1_INTEGER_get(bs);
145            if (l < 0) {
146                l = -l;
147                neg = "-";
148            } else
149                neg = "";
150            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)
151                goto err;
152        } else {
153            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
154            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
155                goto err;
156
157            for (i = 0; i < bs->length; i++) {
158                if (BIO_printf(bp, "%02x%c", bs->data[i],
159                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
160                    goto err;
161            }
162        }
163
164    }
165
166    if (!(cflag & X509_FLAG_NO_SIGNAME)) {
167        if (BIO_printf(bp, "%8sSignature Algorithm: ", "") <= 0)
168            goto err;
169        if (i2a_ASN1_OBJECT(bp, ci->signature->algorithm) <= 0)
170            goto err;
171        if (BIO_puts(bp, "\n") <= 0)
172            goto err;
173    }
174
175    if (!(cflag & X509_FLAG_NO_ISSUER)) {
176        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
177            goto err;
178        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
179            < 0)
180            goto err;
181        if (BIO_write(bp, "\n", 1) <= 0)
182            goto err;
183    }
184    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
185        if (BIO_write(bp, "        Validity\n", 17) <= 0)
186            goto err;
187        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
188            goto err;
189        if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
190            goto err;
191        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
192            goto err;
193        if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
194            goto err;
195        if (BIO_write(bp, "\n", 1) <= 0)
196            goto err;
197    }
198    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
199        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
200            goto err;
201        if (X509_NAME_print_ex
202            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
203            goto err;
204        if (BIO_write(bp, "\n", 1) <= 0)
205            goto err;
206    }
207    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
208        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
209            goto err;
210        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
211            goto err;
212        if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
213            goto err;
214        if (BIO_puts(bp, "\n") <= 0)
215            goto err;
216
217        pkey = X509_get_pubkey(x);
218        if (pkey == NULL) {
219            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
220            ERR_print_errors(bp);
221        } else
222#ifndef OPENSSL_NO_RSA
223        if (pkey->type == EVP_PKEY_RSA) {
224            BIO_printf(bp, "%12sRSA Public Key: (%d bit)\n", "",
225                       BN_num_bits(pkey->pkey.rsa->n));
226            RSA_print(bp, pkey->pkey.rsa, 16);
227        } else
228#endif
229#ifndef OPENSSL_NO_DSA
230        if (pkey->type == EVP_PKEY_DSA) {
231            BIO_printf(bp, "%12sDSA Public Key:\n", "");
232            DSA_print(bp, pkey->pkey.dsa, 16);
233        } else
234#endif
235#ifndef OPENSSL_NO_EC
236        if (pkey->type == EVP_PKEY_EC) {
237            BIO_printf(bp, "%12sEC Public Key:\n", "");
238            EC_KEY_print(bp, pkey->pkey.ec, 16);
239        } else
240#endif
241            BIO_printf(bp, "%12sUnknown Public Key:\n", "");
242
243        EVP_PKEY_free(pkey);
244    }
245
246    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
247        X509V3_extensions_print(bp, "X509v3 extensions",
248                                ci->extensions, cflag, 8);
249
250    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
251        if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
252            goto err;
253    }
254    if (!(cflag & X509_FLAG_NO_AUX)) {
255        if (!X509_CERT_AUX_print(bp, x->aux, 0))
256            goto err;
257    }
258    ret = 1;
259 err:
260    if (str != NULL)
261        ASN1_STRING_free(str);
262    if (m != NULL)
263        OPENSSL_free(m);
264    return (ret);
265}
266
267int X509_ocspid_print(BIO *bp, X509 *x)
268{
269    unsigned char *der = NULL;
270    unsigned char *dertmp;
271    int derlen;
272    int i;
273    unsigned char SHA1md[SHA_DIGEST_LENGTH];
274
275    /*
276     * display the hash of the subject as it would appear in OCSP requests
277     */
278    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
279        goto err;
280    derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
281    if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)
282        goto err;
283    i2d_X509_NAME(x->cert_info->subject, &dertmp);
284
285    EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL);
286    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
287        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
288            goto err;
289    }
290    OPENSSL_free(der);
291    der = NULL;
292
293    /*
294     * display the hash of the public key as it would appear in OCSP requests
295     */
296    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
297        goto err;
298
299    EVP_Digest(x->cert_info->key->public_key->data,
300               x->cert_info->key->public_key->length, SHA1md, NULL,
301               EVP_sha1(), NULL);
302    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
303        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
304            goto err;
305    }
306    BIO_printf(bp, "\n");
307
308    return (1);
309 err:
310    if (der != NULL)
311        OPENSSL_free(der);
312    return (0);
313}
314
315int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
316{
317    unsigned char *s;
318    int i, n;
319    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
320        return 0;
321    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
322        return 0;
323
324    n = sig->length;
325    s = sig->data;
326    for (i = 0; i < n; i++) {
327        if ((i % 18) == 0)
328            if (BIO_write(bp, "\n        ", 9) <= 0)
329                return 0;
330        if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
331            return 0;
332    }
333    if (BIO_write(bp, "\n", 1) != 1)
334        return 0;
335    return 1;
336}
337
338int ASN1_STRING_print(BIO *bp, ASN1_STRING *v)
339{
340    int i, n;
341    char buf[80], *p;
342
343    if (v == NULL)
344        return (0);
345    n = 0;
346    p = (char *)v->data;
347    for (i = 0; i < v->length; i++) {
348        if ((p[i] > '~') || ((p[i] < ' ') &&
349                             (p[i] != '\n') && (p[i] != '\r')))
350            buf[n] = '.';
351        else
352            buf[n] = p[i];
353        n++;
354        if (n >= 80) {
355            if (BIO_write(bp, buf, n) <= 0)
356                return (0);
357            n = 0;
358        }
359    }
360    if (n > 0)
361        if (BIO_write(bp, buf, n) <= 0)
362            return (0);
363    return (1);
364}
365
366int ASN1_TIME_print(BIO *bp, ASN1_TIME *tm)
367{
368    if (tm->type == V_ASN1_UTCTIME)
369        return ASN1_UTCTIME_print(bp, tm);
370    if (tm->type == V_ASN1_GENERALIZEDTIME)
371        return ASN1_GENERALIZEDTIME_print(bp, tm);
372    BIO_write(bp, "Bad time value", 14);
373    return (0);
374}
375
376static const char *mon[12] = {
377    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
378    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
379};
380
381int ASN1_GENERALIZEDTIME_print(BIO *bp, ASN1_GENERALIZEDTIME *tm)
382{
383    char *v;
384    int gmt = 0;
385    int i;
386    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
387    char *f = NULL;
388    int f_len = 0;
389
390    i = tm->length;
391    v = (char *)tm->data;
392
393    if (i < 12)
394        goto err;
395    if (v[i - 1] == 'Z')
396        gmt = 1;
397    for (i = 0; i < 12; i++)
398        if ((v[i] > '9') || (v[i] < '0'))
399            goto err;
400    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100
401        + (v[2] - '0') * 10 + (v[3] - '0');
402    M = (v[4] - '0') * 10 + (v[5] - '0');
403    if ((M > 12) || (M < 1))
404        goto err;
405    d = (v[6] - '0') * 10 + (v[7] - '0');
406    h = (v[8] - '0') * 10 + (v[9] - '0');
407    m = (v[10] - '0') * 10 + (v[11] - '0');
408    if (tm->length >= 14 &&
409        (v[12] >= '0') && (v[12] <= '9') &&
410        (v[13] >= '0') && (v[13] <= '9')) {
411        s = (v[12] - '0') * 10 + (v[13] - '0');
412        /* Check for fractions of seconds. */
413        if (tm->length >= 15 && v[14] == '.') {
414            int l = tm->length;
415            f = &v[14];         /* The decimal point. */
416            f_len = 1;
417            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
418                ++f_len;
419        }
420    }
421
422    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
423                   mon[M - 1], d, h, m, s, f_len, f, y,
424                   (gmt) ? " GMT" : "") <= 0)
425        return (0);
426    else
427        return (1);
428 err:
429    BIO_write(bp, "Bad time value", 14);
430    return (0);
431}
432
433int ASN1_UTCTIME_print(BIO *bp, ASN1_UTCTIME *tm)
434{
435    char *v;
436    int gmt = 0;
437    int i;
438    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
439
440    i = tm->length;
441    v = (char *)tm->data;
442
443    if (i < 10)
444        goto err;
445    if (v[i - 1] == 'Z')
446        gmt = 1;
447    for (i = 0; i < 10; i++)
448        if ((v[i] > '9') || (v[i] < '0'))
449            goto err;
450    y = (v[0] - '0') * 10 + (v[1] - '0');
451    if (y < 50)
452        y += 100;
453    M = (v[2] - '0') * 10 + (v[3] - '0');
454    if ((M > 12) || (M < 1))
455        goto err;
456    d = (v[4] - '0') * 10 + (v[5] - '0');
457    h = (v[6] - '0') * 10 + (v[7] - '0');
458    m = (v[8] - '0') * 10 + (v[9] - '0');
459    if (tm->length >= 12 &&
460        (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
461        s = (v[10] - '0') * 10 + (v[11] - '0');
462
463    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
464                   mon[M - 1], d, h, m, s, y + 1900,
465                   (gmt) ? " GMT" : "") <= 0)
466        return (0);
467    else
468        return (1);
469 err:
470    BIO_write(bp, "Bad time value", 14);
471    return (0);
472}
473
474int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
475{
476    char *s, *c, *b;
477    int ret = 0, l, i;
478
479    l = 80 - 2 - obase;
480
481    b = X509_NAME_oneline(name, NULL, 0);
482    if (!b)
483        return 0;
484    if (!*b) {
485        OPENSSL_free(b);
486        return 1;
487    }
488    s = b + 1;                  /* skip the first slash */
489
490    c = s;
491    for (;;) {
492#ifndef CHARSET_EBCDIC
493        if (((*s == '/') &&
494             ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
495                                                 ((s[2] >= 'A')
496                                                  && (s[2] <= 'Z')
497                                                  && (s[3] == '='))
498              ))) || (*s == '\0'))
499#else
500        if (((*s == '/') &&
501             (isupper(s[1]) && ((s[2] == '=') ||
502                                (isupper(s[2]) && (s[3] == '='))
503              ))) || (*s == '\0'))
504#endif
505        {
506            i = s - c;
507            if (BIO_write(bp, c, i) != i)
508                goto err;
509            c = s + 1;          /* skip following slash */
510            if (*s != '\0') {
511                if (BIO_write(bp, ", ", 2) != 2)
512                    goto err;
513            }
514            l--;
515        }
516        if (*s == '\0')
517            break;
518        s++;
519        l--;
520    }
521
522    ret = 1;
523    if (0) {
524 err:
525        X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);
526    }
527    OPENSSL_free(b);
528    return (ret);
529}
530