t_x509.c revision 298999 
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#include "asn1_locl.h"
76
77#ifndef OPENSSL_NO_FP_API
78int X509_print_fp(FILE *fp, X509 *x)
79{
80    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
81}
82
83int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
84                     unsigned long cflag)
85{
86    BIO *b;
87    int ret;
88
89    if ((b = BIO_new(BIO_s_file())) == NULL) {
90        X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
91        return (0);
92    }
93    BIO_set_fp(b, fp, BIO_NOCLOSE);
94    ret = X509_print_ex(b, x, nmflag, cflag);
95    BIO_free(b);
96    return (ret);
97}
98#endif
99
100int X509_print(BIO *bp, X509 *x)
101{
102    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
103}
104
105int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
106                  unsigned long cflag)
107{
108    long l;
109    int ret = 0, i;
110    char *m = NULL, mlch = ' ';
111    int nmindent = 0;
112    X509_CINF *ci;
113    ASN1_INTEGER *bs;
114    EVP_PKEY *pkey = NULL;
115    const char *neg;
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 < (int)sizeof(long)
144            || (bs->length == sizeof(long) && (bs->data[0] & 0x80) == 0)) {
145            l = ASN1_INTEGER_get(bs);
146            if (bs->type == V_ASN1_NEG_INTEGER) {
147                l = -l;
148                neg = "-";
149            } else
150                neg = "";
151            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)
152                goto err;
153        } else {
154            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
155            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
156                goto err;
157
158            for (i = 0; i < bs->length; i++) {
159                if (BIO_printf(bp, "%02x%c", bs->data[i],
160                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
161                    goto err;
162            }
163        }
164
165    }
166
167    if (!(cflag & X509_FLAG_NO_SIGNAME)) {
168        if (X509_signature_print(bp, ci->signature, NULL) <= 0)
169            goto err;
170#if 0
171        if (BIO_printf(bp, "%8sSignature Algorithm: ", "") <= 0)
172            goto err;
173        if (i2a_ASN1_OBJECT(bp, ci->signature->algorithm) <= 0)
174            goto err;
175        if (BIO_puts(bp, "\n") <= 0)
176            goto err;
177#endif
178    }
179
180    if (!(cflag & X509_FLAG_NO_ISSUER)) {
181        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
182            goto err;
183        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
184            < 0)
185            goto err;
186        if (BIO_write(bp, "\n", 1) <= 0)
187            goto err;
188    }
189    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
190        if (BIO_write(bp, "        Validity\n", 17) <= 0)
191            goto err;
192        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
193            goto err;
194        if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
195            goto err;
196        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
197            goto err;
198        if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
199            goto err;
200        if (BIO_write(bp, "\n", 1) <= 0)
201            goto err;
202    }
203    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
204        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
205            goto err;
206        if (X509_NAME_print_ex
207            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
208            goto err;
209        if (BIO_write(bp, "\n", 1) <= 0)
210            goto err;
211    }
212    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
213        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
214            goto err;
215        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
216            goto err;
217        if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
218            goto err;
219        if (BIO_puts(bp, "\n") <= 0)
220            goto err;
221
222        pkey = X509_get_pubkey(x);
223        if (pkey == NULL) {
224            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
225            ERR_print_errors(bp);
226        } else {
227            EVP_PKEY_print_public(bp, pkey, 16, NULL);
228            EVP_PKEY_free(pkey);
229        }
230    }
231
232    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
233        X509V3_extensions_print(bp, "X509v3 extensions",
234                                ci->extensions, cflag, 8);
235
236    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
237        if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
238            goto err;
239    }
240    if (!(cflag & X509_FLAG_NO_AUX)) {
241        if (!X509_CERT_AUX_print(bp, x->aux, 0))
242            goto err;
243    }
244    ret = 1;
245 err:
246    if (m != NULL)
247        OPENSSL_free(m);
248    return (ret);
249}
250
251int X509_ocspid_print(BIO *bp, X509 *x)
252{
253    unsigned char *der = NULL;
254    unsigned char *dertmp;
255    int derlen;
256    int i;
257    unsigned char SHA1md[SHA_DIGEST_LENGTH];
258
259    /*
260     * display the hash of the subject as it would appear in OCSP requests
261     */
262    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
263        goto err;
264    derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
265    if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)
266        goto err;
267    i2d_X509_NAME(x->cert_info->subject, &dertmp);
268
269    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
270        goto err;
271    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
272        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
273            goto err;
274    }
275    OPENSSL_free(der);
276    der = NULL;
277
278    /*
279     * display the hash of the public key as it would appear in OCSP requests
280     */
281    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
282        goto err;
283
284    if (!EVP_Digest(x->cert_info->key->public_key->data,
285                    x->cert_info->key->public_key->length,
286                    SHA1md, NULL, EVP_sha1(), NULL))
287        goto err;
288    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
289        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
290            goto err;
291    }
292    BIO_printf(bp, "\n");
293
294    return (1);
295 err:
296    if (der != NULL)
297        OPENSSL_free(der);
298    return (0);
299}
300
301int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
302{
303    const unsigned char *s;
304    int i, n;
305
306    n = sig->length;
307    s = sig->data;
308    for (i = 0; i < n; i++) {
309        if ((i % 18) == 0) {
310            if (BIO_write(bp, "\n", 1) <= 0)
311                return 0;
312            if (BIO_indent(bp, indent, indent) <= 0)
313                return 0;
314        }
315        if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
316            return 0;
317    }
318    if (BIO_write(bp, "\n", 1) != 1)
319        return 0;
320
321    return 1;
322}
323
324int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
325{
326    int sig_nid;
327    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
328        return 0;
329    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
330        return 0;
331
332    sig_nid = OBJ_obj2nid(sigalg->algorithm);
333    if (sig_nid != NID_undef) {
334        int pkey_nid, dig_nid;
335        const EVP_PKEY_ASN1_METHOD *ameth;
336        if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
337            ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
338            if (ameth && ameth->sig_print)
339                return ameth->sig_print(bp, sigalg, sig, 9, 0);
340        }
341    }
342    if (sig)
343        return X509_signature_dump(bp, sig, 9);
344    else if (BIO_puts(bp, "\n") <= 0)
345        return 0;
346    return 1;
347}
348
349int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
350{
351    int i, n;
352    char buf[80];
353    const char *p;
354
355    if (v == NULL)
356        return (0);
357    n = 0;
358    p = (const char *)v->data;
359    for (i = 0; i < v->length; i++) {
360        if ((p[i] > '~') || ((p[i] < ' ') &&
361                             (p[i] != '\n') && (p[i] != '\r')))
362            buf[n] = '.';
363        else
364            buf[n] = p[i];
365        n++;
366        if (n >= 80) {
367            if (BIO_write(bp, buf, n) <= 0)
368                return (0);
369            n = 0;
370        }
371    }
372    if (n > 0)
373        if (BIO_write(bp, buf, n) <= 0)
374            return (0);
375    return (1);
376}
377
378int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
379{
380    if (tm->type == V_ASN1_UTCTIME)
381        return ASN1_UTCTIME_print(bp, tm);
382    if (tm->type == V_ASN1_GENERALIZEDTIME)
383        return ASN1_GENERALIZEDTIME_print(bp, tm);
384    BIO_write(bp, "Bad time value", 14);
385    return (0);
386}
387
388static const char *mon[12] = {
389    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
390    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
391};
392
393int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
394{
395    char *v;
396    int gmt = 0;
397    int i;
398    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
399    char *f = NULL;
400    int f_len = 0;
401
402    i = tm->length;
403    v = (char *)tm->data;
404
405    if (i < 12)
406        goto err;
407    if (v[i - 1] == 'Z')
408        gmt = 1;
409    for (i = 0; i < 12; i++)
410        if ((v[i] > '9') || (v[i] < '0'))
411            goto err;
412    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100
413        + (v[2] - '0') * 10 + (v[3] - '0');
414    M = (v[4] - '0') * 10 + (v[5] - '0');
415    if ((M > 12) || (M < 1))
416        goto err;
417    d = (v[6] - '0') * 10 + (v[7] - '0');
418    h = (v[8] - '0') * 10 + (v[9] - '0');
419    m = (v[10] - '0') * 10 + (v[11] - '0');
420    if (tm->length >= 14 &&
421        (v[12] >= '0') && (v[12] <= '9') &&
422        (v[13] >= '0') && (v[13] <= '9')) {
423        s = (v[12] - '0') * 10 + (v[13] - '0');
424        /* Check for fractions of seconds. */
425        if (tm->length >= 15 && v[14] == '.') {
426            int l = tm->length;
427            f = &v[14];         /* The decimal point. */
428            f_len = 1;
429            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
430                ++f_len;
431        }
432    }
433
434    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
435                   mon[M - 1], d, h, m, s, f_len, f, y,
436                   (gmt) ? " GMT" : "") <= 0)
437        return (0);
438    else
439        return (1);
440 err:
441    BIO_write(bp, "Bad time value", 14);
442    return (0);
443}
444
445int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
446{
447    const char *v;
448    int gmt = 0;
449    int i;
450    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
451
452    i = tm->length;
453    v = (const char *)tm->data;
454
455    if (i < 10)
456        goto err;
457    if (v[i - 1] == 'Z')
458        gmt = 1;
459    for (i = 0; i < 10; i++)
460        if ((v[i] > '9') || (v[i] < '0'))
461            goto err;
462    y = (v[0] - '0') * 10 + (v[1] - '0');
463    if (y < 50)
464        y += 100;
465    M = (v[2] - '0') * 10 + (v[3] - '0');
466    if ((M > 12) || (M < 1))
467        goto err;
468    d = (v[4] - '0') * 10 + (v[5] - '0');
469    h = (v[6] - '0') * 10 + (v[7] - '0');
470    m = (v[8] - '0') * 10 + (v[9] - '0');
471    if (tm->length >= 12 &&
472        (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
473        s = (v[10] - '0') * 10 + (v[11] - '0');
474
475    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
476                   mon[M - 1], d, h, m, s, y + 1900,
477                   (gmt) ? " GMT" : "") <= 0)
478        return (0);
479    else
480        return (1);
481 err:
482    BIO_write(bp, "Bad time value", 14);
483    return (0);
484}
485
486int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
487{
488    char *s, *c, *b;
489    int ret = 0, l, i;
490
491    l = 80 - 2 - obase;
492
493    b = X509_NAME_oneline(name, NULL, 0);
494    if (!b)
495        return 0;
496    if (!*b) {
497        OPENSSL_free(b);
498        return 1;
499    }
500    s = b + 1;                  /* skip the first slash */
501
502    c = s;
503    for (;;) {
504#ifndef CHARSET_EBCDIC
505        if (((*s == '/') &&
506             ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
507                                                 ((s[2] >= 'A')
508                                                  && (s[2] <= 'Z')
509                                                  && (s[3] == '='))
510              ))) || (*s == '\0'))
511#else
512        if (((*s == '/') &&
513             (isupper(s[1]) && ((s[2] == '=') ||
514                                (isupper(s[2]) && (s[3] == '='))
515              ))) || (*s == '\0'))
516#endif
517        {
518            i = s - c;
519            if (BIO_write(bp, c, i) != i)
520                goto err;
521            c = s + 1;          /* skip following slash */
522            if (*s != '\0') {
523                if (BIO_write(bp, ", ", 2) != 2)
524                    goto err;
525            }
526            l--;
527        }
528        if (*s == '\0')
529            break;
530        s++;
531        l--;
532    }
533
534    ret = 1;
535    if (0) {
536 err:
537        X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);
538    }
539    OPENSSL_free(b);
540    return (ret);
541}
542