t_x509.c revision 296341 
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            l = ASN1_INTEGER_get(bs);
145            if (bs->type == V_ASN1_NEG_INTEGER) {
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 (X509_signature_print(bp, ci->signature, NULL) <= 0)
168            goto err;
169#if 0
170        if (BIO_printf(bp, "%8sSignature Algorithm: ", "") <= 0)
171            goto err;
172        if (i2a_ASN1_OBJECT(bp, ci->signature->algorithm) <= 0)
173            goto err;
174        if (BIO_puts(bp, "\n") <= 0)
175            goto err;
176#endif
177    }
178
179    if (!(cflag & X509_FLAG_NO_ISSUER)) {
180        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
181            goto err;
182        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
183            < 0)
184            goto err;
185        if (BIO_write(bp, "\n", 1) <= 0)
186            goto err;
187    }
188    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
189        if (BIO_write(bp, "        Validity\n", 17) <= 0)
190            goto err;
191        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
192            goto err;
193        if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
194            goto err;
195        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
196            goto err;
197        if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
198            goto err;
199        if (BIO_write(bp, "\n", 1) <= 0)
200            goto err;
201    }
202    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
203        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
204            goto err;
205        if (X509_NAME_print_ex
206            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
207            goto err;
208        if (BIO_write(bp, "\n", 1) <= 0)
209            goto err;
210    }
211    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
212        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
213            goto err;
214        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
215            goto err;
216        if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
217            goto err;
218        if (BIO_puts(bp, "\n") <= 0)
219            goto err;
220
221        pkey = X509_get_pubkey(x);
222        if (pkey == NULL) {
223            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
224            ERR_print_errors(bp);
225        } else {
226            EVP_PKEY_print_public(bp, pkey, 16, NULL);
227            EVP_PKEY_free(pkey);
228        }
229    }
230
231    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
232        X509V3_extensions_print(bp, "X509v3 extensions",
233                                ci->extensions, cflag, 8);
234
235    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
236        if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
237            goto err;
238    }
239    if (!(cflag & X509_FLAG_NO_AUX)) {
240        if (!X509_CERT_AUX_print(bp, x->aux, 0))
241            goto err;
242    }
243    ret = 1;
244 err:
245    if (m != NULL)
246        OPENSSL_free(m);
247    return (ret);
248}
249
250int X509_ocspid_print(BIO *bp, X509 *x)
251{
252    unsigned char *der = NULL;
253    unsigned char *dertmp;
254    int derlen;
255    int i;
256    unsigned char SHA1md[SHA_DIGEST_LENGTH];
257
258    /*
259     * display the hash of the subject as it would appear in OCSP requests
260     */
261    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
262        goto err;
263    derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
264    if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)
265        goto err;
266    i2d_X509_NAME(x->cert_info->subject, &dertmp);
267
268    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
269        goto err;
270    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
271        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
272            goto err;
273    }
274    OPENSSL_free(der);
275    der = NULL;
276
277    /*
278     * display the hash of the public key as it would appear in OCSP requests
279     */
280    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
281        goto err;
282
283    if (!EVP_Digest(x->cert_info->key->public_key->data,
284                    x->cert_info->key->public_key->length,
285                    SHA1md, NULL, EVP_sha1(), NULL))
286        goto err;
287    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
288        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
289            goto err;
290    }
291    BIO_printf(bp, "\n");
292
293    return (1);
294 err:
295    if (der != NULL)
296        OPENSSL_free(der);
297    return (0);
298}
299
300int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
301{
302    const unsigned char *s;
303    int i, n;
304
305    n = sig->length;
306    s = sig->data;
307    for (i = 0; i < n; i++) {
308        if ((i % 18) == 0) {
309            if (BIO_write(bp, "\n", 1) <= 0)
310                return 0;
311            if (BIO_indent(bp, indent, indent) <= 0)
312                return 0;
313        }
314        if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
315            return 0;
316    }
317    if (BIO_write(bp, "\n", 1) != 1)
318        return 0;
319
320    return 1;
321}
322
323int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
324{
325    int sig_nid;
326    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
327        return 0;
328    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
329        return 0;
330
331    sig_nid = OBJ_obj2nid(sigalg->algorithm);
332    if (sig_nid != NID_undef) {
333        int pkey_nid, dig_nid;
334        const EVP_PKEY_ASN1_METHOD *ameth;
335        if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
336            ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
337            if (ameth && ameth->sig_print)
338                return ameth->sig_print(bp, sigalg, sig, 9, 0);
339        }
340    }
341    if (sig)
342        return X509_signature_dump(bp, sig, 9);
343    else if (BIO_puts(bp, "\n") <= 0)
344        return 0;
345    return 1;
346}
347
348int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
349{
350    int i, n;
351    char buf[80];
352    const char *p;
353
354    if (v == NULL)
355        return (0);
356    n = 0;
357    p = (const char *)v->data;
358    for (i = 0; i < v->length; i++) {
359        if ((p[i] > '~') || ((p[i] < ' ') &&
360                             (p[i] != '\n') && (p[i] != '\r')))
361            buf[n] = '.';
362        else
363            buf[n] = p[i];
364        n++;
365        if (n >= 80) {
366            if (BIO_write(bp, buf, n) <= 0)
367                return (0);
368            n = 0;
369        }
370    }
371    if (n > 0)
372        if (BIO_write(bp, buf, n) <= 0)
373            return (0);
374    return (1);
375}
376
377int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
378{
379    if (tm->type == V_ASN1_UTCTIME)
380        return ASN1_UTCTIME_print(bp, tm);
381    if (tm->type == V_ASN1_GENERALIZEDTIME)
382        return ASN1_GENERALIZEDTIME_print(bp, tm);
383    BIO_write(bp, "Bad time value", 14);
384    return (0);
385}
386
387static const char *mon[12] = {
388    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
389    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
390};
391
392int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
393{
394    char *v;
395    int gmt = 0;
396    int i;
397    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
398    char *f = NULL;
399    int f_len = 0;
400
401    i = tm->length;
402    v = (char *)tm->data;
403
404    if (i < 12)
405        goto err;
406    if (v[i - 1] == 'Z')
407        gmt = 1;
408    for (i = 0; i < 12; i++)
409        if ((v[i] > '9') || (v[i] < '0'))
410            goto err;
411    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100
412        + (v[2] - '0') * 10 + (v[3] - '0');
413    M = (v[4] - '0') * 10 + (v[5] - '0');
414    if ((M > 12) || (M < 1))
415        goto err;
416    d = (v[6] - '0') * 10 + (v[7] - '0');
417    h = (v[8] - '0') * 10 + (v[9] - '0');
418    m = (v[10] - '0') * 10 + (v[11] - '0');
419    if (tm->length >= 14 &&
420        (v[12] >= '0') && (v[12] <= '9') &&
421        (v[13] >= '0') && (v[13] <= '9')) {
422        s = (v[12] - '0') * 10 + (v[13] - '0');
423        /* Check for fractions of seconds. */
424        if (tm->length >= 15 && v[14] == '.') {
425            int l = tm->length;
426            f = &v[14];         /* The decimal point. */
427            f_len = 1;
428            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
429                ++f_len;
430        }
431    }
432
433    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
434                   mon[M - 1], d, h, m, s, f_len, f, y,
435                   (gmt) ? " GMT" : "") <= 0)
436        return (0);
437    else
438        return (1);
439 err:
440    BIO_write(bp, "Bad time value", 14);
441    return (0);
442}
443
444int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
445{
446    const char *v;
447    int gmt = 0;
448    int i;
449    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
450
451    i = tm->length;
452    v = (const char *)tm->data;
453
454    if (i < 10)
455        goto err;
456    if (v[i - 1] == 'Z')
457        gmt = 1;
458    for (i = 0; i < 10; i++)
459        if ((v[i] > '9') || (v[i] < '0'))
460            goto err;
461    y = (v[0] - '0') * 10 + (v[1] - '0');
462    if (y < 50)
463        y += 100;
464    M = (v[2] - '0') * 10 + (v[3] - '0');
465    if ((M > 12) || (M < 1))
466        goto err;
467    d = (v[4] - '0') * 10 + (v[5] - '0');
468    h = (v[6] - '0') * 10 + (v[7] - '0');
469    m = (v[8] - '0') * 10 + (v[9] - '0');
470    if (tm->length >= 12 &&
471        (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
472        s = (v[10] - '0') * 10 + (v[11] - '0');
473
474    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
475                   mon[M - 1], d, h, m, s, y + 1900,
476                   (gmt) ? " GMT" : "") <= 0)
477        return (0);
478    else
479        return (1);
480 err:
481    BIO_write(bp, "Bad time value", 14);
482    return (0);
483}
484
485int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
486{
487    char *s, *c, *b;
488    int ret = 0, l, i;
489
490    l = 80 - 2 - obase;
491
492    b = X509_NAME_oneline(name, NULL, 0);
493    if (!b)
494        return 0;
495    if (!*b) {
496        OPENSSL_free(b);
497        return 1;
498    }
499    s = b + 1;                  /* skip the first slash */
500
501    c = s;
502    for (;;) {
503#ifndef CHARSET_EBCDIC
504        if (((*s == '/') &&
505             ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
506                                                 ((s[2] >= 'A')
507                                                  && (s[2] <= 'Z')
508                                                  && (s[3] == '='))
509              ))) || (*s == '\0'))
510#else
511        if (((*s == '/') &&
512             (isupper(s[1]) && ((s[2] == '=') ||
513                                (isupper(s[2]) && (s[3] == '='))
514              ))) || (*s == '\0'))
515#endif
516        {
517            i = s - c;
518            if (BIO_write(bp, c, i) != i)
519                goto err;
520            c = s + 1;          /* skip following slash */
521            if (*s != '\0') {
522                if (BIO_write(bp, ", ", 2) != 2)
523                    goto err;
524            }
525            l--;
526        }
527        if (*s == '\0')
528            break;
529        s++;
530        l--;
531    }
532
533    ret = 1;
534    if (0) {
535 err:
536        X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);
537    }
538    OPENSSL_free(b);
539    return (ret);
540}
541