1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/buffer.h>
13#include <openssl/bn.h>
14#include <openssl/objects.h>
15#include <openssl/x509.h>
16#include <openssl/x509v3.h>
17#include "crypto/asn1.h"
18
19#ifndef OPENSSL_NO_STDIO
20int X509_print_fp(FILE *fp, X509 *x)
21{
22    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
23}
24
25int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
26                     unsigned long cflag)
27{
28    BIO *b;
29    int ret;
30
31    if ((b = BIO_new(BIO_s_file())) == NULL) {
32        X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
33        return 0;
34    }
35    BIO_set_fp(b, fp, BIO_NOCLOSE);
36    ret = X509_print_ex(b, x, nmflag, cflag);
37    BIO_free(b);
38    return ret;
39}
40#endif
41
42int X509_print(BIO *bp, X509 *x)
43{
44    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
45}
46
47int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
48                  unsigned long cflag)
49{
50    long l;
51    int ret = 0, i;
52    char *m = NULL, mlch = ' ';
53    int nmindent = 0;
54    ASN1_INTEGER *bs;
55    EVP_PKEY *pkey = NULL;
56    const char *neg;
57
58    if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
59        mlch = '\n';
60        nmindent = 12;
61    }
62
63    if (nmflags == X509_FLAG_COMPAT)
64        nmindent = 16;
65
66    if (!(cflag & X509_FLAG_NO_HEADER)) {
67        if (BIO_write(bp, "Certificate:\n", 13) <= 0)
68            goto err;
69        if (BIO_write(bp, "    Data:\n", 10) <= 0)
70            goto err;
71    }
72    if (!(cflag & X509_FLAG_NO_VERSION)) {
73        l = X509_get_version(x);
74        if (l >= 0 && l <= 2) {
75            if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", "", l + 1, (unsigned long)l) <= 0)
76                goto err;
77        } else {
78            if (BIO_printf(bp, "%8sVersion: Unknown (%ld)\n", "", l) <= 0)
79                goto err;
80        }
81    }
82    if (!(cflag & X509_FLAG_NO_SERIAL)) {
83
84        if (BIO_write(bp, "        Serial Number:", 22) <= 0)
85            goto err;
86
87        bs = X509_get_serialNumber(x);
88        if (bs->length <= (int)sizeof(long)) {
89                ERR_set_mark();
90                l = ASN1_INTEGER_get(bs);
91                ERR_pop_to_mark();
92        } else {
93            l = -1;
94        }
95        if (l != -1) {
96            unsigned long ul;
97            if (bs->type == V_ASN1_NEG_INTEGER) {
98                ul = 0 - (unsigned long)l;
99                neg = "-";
100            } else {
101                ul = l;
102                neg = "";
103            }
104            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, ul, neg, ul) <= 0)
105                goto err;
106        } else {
107            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
108            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
109                goto err;
110
111            for (i = 0; i < bs->length; i++) {
112                if (BIO_printf(bp, "%02x%c", bs->data[i],
113                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
114                    goto err;
115            }
116        }
117
118    }
119
120    if (!(cflag & X509_FLAG_NO_SIGNAME)) {
121        const X509_ALGOR *tsig_alg = X509_get0_tbs_sigalg(x);
122
123        if (BIO_puts(bp, "    ") <= 0)
124            goto err;
125        if (X509_signature_print(bp, tsig_alg, NULL) <= 0)
126            goto err;
127    }
128
129    if (!(cflag & X509_FLAG_NO_ISSUER)) {
130        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
131            goto err;
132        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
133            < 0)
134            goto err;
135        if (BIO_write(bp, "\n", 1) <= 0)
136            goto err;
137    }
138    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
139        if (BIO_write(bp, "        Validity\n", 17) <= 0)
140            goto err;
141        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
142            goto err;
143        if (!ASN1_TIME_print(bp, X509_get0_notBefore(x)))
144            goto err;
145        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
146            goto err;
147        if (!ASN1_TIME_print(bp, X509_get0_notAfter(x)))
148            goto err;
149        if (BIO_write(bp, "\n", 1) <= 0)
150            goto err;
151    }
152    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
153        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
154            goto err;
155        if (X509_NAME_print_ex
156            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
157            goto err;
158        if (BIO_write(bp, "\n", 1) <= 0)
159            goto err;
160    }
161    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
162        X509_PUBKEY *xpkey = X509_get_X509_PUBKEY(x);
163        ASN1_OBJECT *xpoid;
164        X509_PUBKEY_get0_param(&xpoid, NULL, NULL, NULL, xpkey);
165        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
166            goto err;
167        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
168            goto err;
169        if (i2a_ASN1_OBJECT(bp, xpoid) <= 0)
170            goto err;
171        if (BIO_puts(bp, "\n") <= 0)
172            goto err;
173
174        pkey = X509_get0_pubkey(x);
175        if (pkey == NULL) {
176            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
177            ERR_print_errors(bp);
178        } else {
179            EVP_PKEY_print_public(bp, pkey, 16, NULL);
180        }
181    }
182
183    if (!(cflag & X509_FLAG_NO_IDS)) {
184        const ASN1_BIT_STRING *iuid, *suid;
185        X509_get0_uids(x, &iuid, &suid);
186        if (iuid != NULL) {
187            if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
188                goto err;
189            if (!X509_signature_dump(bp, iuid, 12))
190                goto err;
191        }
192        if (suid != NULL) {
193            if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
194                goto err;
195            if (!X509_signature_dump(bp, suid, 12))
196                goto err;
197        }
198    }
199
200    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
201        X509V3_extensions_print(bp, "X509v3 extensions",
202                                X509_get0_extensions(x), cflag, 8);
203
204    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
205        const X509_ALGOR *sig_alg;
206        const ASN1_BIT_STRING *sig;
207        X509_get0_signature(&sig, &sig_alg, x);
208        if (X509_signature_print(bp, sig_alg, sig) <= 0)
209            goto err;
210    }
211    if (!(cflag & X509_FLAG_NO_AUX)) {
212        if (!X509_aux_print(bp, x, 0))
213            goto err;
214    }
215    ret = 1;
216 err:
217    OPENSSL_free(m);
218    return ret;
219}
220
221int X509_ocspid_print(BIO *bp, X509 *x)
222{
223    unsigned char *der = NULL;
224    unsigned char *dertmp;
225    int derlen;
226    int i;
227    unsigned char SHA1md[SHA_DIGEST_LENGTH];
228    ASN1_BIT_STRING *keybstr;
229    X509_NAME *subj;
230
231    /*
232     * display the hash of the subject as it would appear in OCSP requests
233     */
234    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
235        goto err;
236    subj = X509_get_subject_name(x);
237    derlen = i2d_X509_NAME(subj, NULL);
238    if ((der = dertmp = OPENSSL_malloc(derlen)) == NULL)
239        goto err;
240    i2d_X509_NAME(subj, &dertmp);
241
242    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
243        goto err;
244    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
245        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
246            goto err;
247    }
248    OPENSSL_free(der);
249    der = NULL;
250
251    /*
252     * display the hash of the public key as it would appear in OCSP requests
253     */
254    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
255        goto err;
256
257    keybstr = X509_get0_pubkey_bitstr(x);
258
259    if (keybstr == NULL)
260        goto err;
261
262    if (!EVP_Digest(ASN1_STRING_get0_data(keybstr),
263                    ASN1_STRING_length(keybstr), SHA1md, NULL, EVP_sha1(),
264                    NULL))
265        goto err;
266    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
267        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
268            goto err;
269    }
270    BIO_printf(bp, "\n");
271
272    return 1;
273 err:
274    OPENSSL_free(der);
275    return 0;
276}
277
278int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
279{
280    const unsigned char *s;
281    int i, n;
282
283    n = sig->length;
284    s = sig->data;
285    for (i = 0; i < n; i++) {
286        if ((i % 18) == 0) {
287            if (BIO_write(bp, "\n", 1) <= 0)
288                return 0;
289            if (BIO_indent(bp, indent, indent) <= 0)
290                return 0;
291        }
292        if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
293            return 0;
294    }
295    if (BIO_write(bp, "\n", 1) != 1)
296        return 0;
297
298    return 1;
299}
300
301int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
302                         const ASN1_STRING *sig)
303{
304    int sig_nid;
305    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
306        return 0;
307    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
308        return 0;
309
310    sig_nid = OBJ_obj2nid(sigalg->algorithm);
311    if (sig_nid != NID_undef) {
312        int pkey_nid, dig_nid;
313        const EVP_PKEY_ASN1_METHOD *ameth;
314        if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
315            ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
316            if (ameth && ameth->sig_print)
317                return ameth->sig_print(bp, sigalg, sig, 9, 0);
318        }
319    }
320    if (sig)
321        return X509_signature_dump(bp, sig, 9);
322    else if (BIO_puts(bp, "\n") <= 0)
323        return 0;
324    return 1;
325}
326
327int X509_aux_print(BIO *out, X509 *x, int indent)
328{
329    char oidstr[80], first;
330    STACK_OF(ASN1_OBJECT) *trust, *reject;
331    const unsigned char *alias, *keyid;
332    int keyidlen;
333    int i;
334    if (X509_trusted(x) == 0)
335        return 1;
336    trust = X509_get0_trust_objects(x);
337    reject = X509_get0_reject_objects(x);
338    if (trust) {
339        first = 1;
340        BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, "");
341        for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
342            if (!first)
343                BIO_puts(out, ", ");
344            else
345                first = 0;
346            OBJ_obj2txt(oidstr, sizeof(oidstr),
347                        sk_ASN1_OBJECT_value(trust, i), 0);
348            BIO_puts(out, oidstr);
349        }
350        BIO_puts(out, "\n");
351    } else
352        BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
353    if (reject) {
354        first = 1;
355        BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, "");
356        for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
357            if (!first)
358                BIO_puts(out, ", ");
359            else
360                first = 0;
361            OBJ_obj2txt(oidstr, sizeof(oidstr),
362                        sk_ASN1_OBJECT_value(reject, i), 0);
363            BIO_puts(out, oidstr);
364        }
365        BIO_puts(out, "\n");
366    } else
367        BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
368    alias = X509_alias_get0(x, NULL);
369    if (alias)
370        BIO_printf(out, "%*sAlias: %s\n", indent, "", alias);
371    keyid = X509_keyid_get0(x, &keyidlen);
372    if (keyid) {
373        BIO_printf(out, "%*sKey Id: ", indent, "");
374        for (i = 0; i < keyidlen; i++)
375            BIO_printf(out, "%s%02X", i ? ":" : "", keyid[i]);
376        BIO_write(out, "\n", 1);
377    }
378    return 1;
379}
380