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
X509_print_fp(FILE * fp,X509 * x)20 int X509_print_fp(FILE *fp, X509 *x)
21 {
22     return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
23 }
24 
X509_print_ex_fp(FILE * fp,X509 * x,unsigned long nmflag,unsigned long cflag)25 int 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 
X509_print(BIO * bp,X509 * x)42 int X509_print(BIO *bp, X509 *x)
43 {
44     return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
45 }
46 
X509_print_ex(BIO * bp,X509 * x,unsigned long nmflags,unsigned long cflag)47 int 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 
X509_ocspid_print(BIO * bp,X509 * x)221 int 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 
X509_signature_dump(BIO * bp,const ASN1_STRING * sig,int indent)278 int 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 
X509_signature_print(BIO * bp,const X509_ALGOR * sigalg,const ASN1_STRING * sig)301 int 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 
X509_aux_print(BIO * out,X509 * x,int indent)327 int 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