Line data Source code
1 : /* crypto/pem/pem_info.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/objects.h>
63 : #include <openssl/evp.h>
64 : #include <openssl/x509.h>
65 : #include <openssl/pem.h>
66 : #ifndef OPENSSL_NO_RSA
67 : # include <openssl/rsa.h>
68 : #endif
69 : #ifndef OPENSSL_NO_DSA
70 : # include <openssl/dsa.h>
71 : #endif
72 :
73 : #ifndef OPENSSL_NO_FP_API
74 0 : STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk,
75 : pem_password_cb *cb, void *u)
76 : {
77 : BIO *b;
78 : STACK_OF(X509_INFO) *ret;
79 :
80 0 : if ((b = BIO_new(BIO_s_file())) == NULL) {
81 0 : PEMerr(PEM_F_PEM_X509_INFO_READ, ERR_R_BUF_LIB);
82 0 : return (0);
83 : }
84 0 : BIO_set_fp(b, fp, BIO_NOCLOSE);
85 0 : ret = PEM_X509_INFO_read_bio(b, sk, cb, u);
86 0 : BIO_free(b);
87 0 : return (ret);
88 : }
89 : #endif
90 :
91 0 : STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk,
92 : pem_password_cb *cb, void *u)
93 : {
94 : X509_INFO *xi = NULL;
95 0 : char *name = NULL, *header = NULL;
96 : void *pp;
97 0 : unsigned char *data = NULL;
98 : const unsigned char *p;
99 : long len, error = 0;
100 : int ok = 0;
101 : STACK_OF(X509_INFO) *ret = NULL;
102 : unsigned int i, raw, ptype;
103 : d2i_of_void *d2i = 0;
104 :
105 0 : if (sk == NULL) {
106 0 : if ((ret = sk_X509_INFO_new_null()) == NULL) {
107 0 : PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_MALLOC_FAILURE);
108 0 : goto err;
109 : }
110 : } else
111 : ret = sk;
112 :
113 0 : if ((xi = X509_INFO_new()) == NULL)
114 : goto err;
115 : for (;;) {
116 : raw = 0;
117 : ptype = 0;
118 0 : i = PEM_read_bio(bp, &name, &header, &data, &len);
119 0 : if (i == 0) {
120 0 : error = ERR_GET_REASON(ERR_peek_last_error());
121 0 : if (error == PEM_R_NO_START_LINE) {
122 0 : ERR_clear_error();
123 : break;
124 : }
125 : goto err;
126 : }
127 : start:
128 0 : if ((strcmp(name, PEM_STRING_X509) == 0) ||
129 0 : (strcmp(name, PEM_STRING_X509_OLD) == 0)) {
130 : d2i = (D2I_OF(void)) d2i_X509;
131 0 : if (xi->x509 != NULL) {
132 0 : if (!sk_X509_INFO_push(ret, xi))
133 : goto err;
134 0 : if ((xi = X509_INFO_new()) == NULL)
135 : goto err;
136 : goto start;
137 : }
138 0 : pp = &(xi->x509);
139 0 : } else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) {
140 : d2i = (D2I_OF(void)) d2i_X509_AUX;
141 0 : if (xi->x509 != NULL) {
142 0 : if (!sk_X509_INFO_push(ret, xi))
143 : goto err;
144 0 : if ((xi = X509_INFO_new()) == NULL)
145 : goto err;
146 : goto start;
147 : }
148 0 : pp = &(xi->x509);
149 0 : } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) {
150 : d2i = (D2I_OF(void)) d2i_X509_CRL;
151 0 : if (xi->crl != NULL) {
152 0 : if (!sk_X509_INFO_push(ret, xi))
153 : goto err;
154 0 : if ((xi = X509_INFO_new()) == NULL)
155 : goto err;
156 : goto start;
157 : }
158 0 : pp = &(xi->crl);
159 : } else
160 : #ifndef OPENSSL_NO_RSA
161 0 : if (strcmp(name, PEM_STRING_RSA) == 0) {
162 : d2i = (D2I_OF(void)) d2i_RSAPrivateKey;
163 0 : if (xi->x_pkey != NULL) {
164 0 : if (!sk_X509_INFO_push(ret, xi))
165 : goto err;
166 0 : if ((xi = X509_INFO_new()) == NULL)
167 : goto err;
168 : goto start;
169 : }
170 :
171 0 : xi->enc_data = NULL;
172 0 : xi->enc_len = 0;
173 :
174 0 : xi->x_pkey = X509_PKEY_new();
175 : ptype = EVP_PKEY_RSA;
176 0 : pp = &xi->x_pkey->dec_pkey;
177 0 : if ((int)strlen(header) > 10) /* assume encrypted */
178 : raw = 1;
179 : } else
180 : #endif
181 : #ifndef OPENSSL_NO_DSA
182 0 : if (strcmp(name, PEM_STRING_DSA) == 0) {
183 : d2i = (D2I_OF(void)) d2i_DSAPrivateKey;
184 0 : if (xi->x_pkey != NULL) {
185 0 : if (!sk_X509_INFO_push(ret, xi))
186 : goto err;
187 0 : if ((xi = X509_INFO_new()) == NULL)
188 : goto err;
189 : goto start;
190 : }
191 :
192 0 : xi->enc_data = NULL;
193 0 : xi->enc_len = 0;
194 :
195 0 : xi->x_pkey = X509_PKEY_new();
196 : ptype = EVP_PKEY_DSA;
197 0 : pp = &xi->x_pkey->dec_pkey;
198 0 : if ((int)strlen(header) > 10) /* assume encrypted */
199 : raw = 1;
200 : } else
201 : #endif
202 : #ifndef OPENSSL_NO_EC
203 0 : if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) {
204 : d2i = (D2I_OF(void)) d2i_ECPrivateKey;
205 0 : if (xi->x_pkey != NULL) {
206 0 : if (!sk_X509_INFO_push(ret, xi))
207 : goto err;
208 0 : if ((xi = X509_INFO_new()) == NULL)
209 : goto err;
210 : goto start;
211 : }
212 :
213 0 : xi->enc_data = NULL;
214 0 : xi->enc_len = 0;
215 :
216 0 : xi->x_pkey = X509_PKEY_new();
217 : ptype = EVP_PKEY_EC;
218 0 : pp = &xi->x_pkey->dec_pkey;
219 0 : if ((int)strlen(header) > 10) /* assume encrypted */
220 : raw = 1;
221 : } else
222 : #endif
223 : {
224 : d2i = NULL;
225 : pp = NULL;
226 : }
227 :
228 0 : if (d2i != NULL) {
229 0 : if (!raw) {
230 : EVP_CIPHER_INFO cipher;
231 :
232 0 : if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
233 : goto err;
234 0 : if (!PEM_do_header(&cipher, data, &len, cb, u))
235 : goto err;
236 0 : p = data;
237 0 : if (ptype) {
238 0 : if (!d2i_PrivateKey(ptype, pp, &p, len)) {
239 0 : PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB);
240 0 : goto err;
241 : }
242 0 : } else if (d2i(pp, &p, len) == NULL) {
243 0 : PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB);
244 0 : goto err;
245 : }
246 : } else { /* encrypted RSA data */
247 0 : if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher))
248 : goto err;
249 0 : xi->enc_data = (char *)data;
250 0 : xi->enc_len = (int)len;
251 0 : data = NULL;
252 : }
253 : } else {
254 : /* unknown */
255 : }
256 0 : if (name != NULL)
257 0 : OPENSSL_free(name);
258 0 : if (header != NULL)
259 0 : OPENSSL_free(header);
260 0 : if (data != NULL)
261 0 : OPENSSL_free(data);
262 0 : name = NULL;
263 0 : header = NULL;
264 0 : data = NULL;
265 0 : }
266 :
267 : /*
268 : * if the last one hasn't been pushed yet and there is anything in it
269 : * then add it to the stack ...
270 : */
271 0 : if ((xi->x509 != NULL) || (xi->crl != NULL) ||
272 0 : (xi->x_pkey != NULL) || (xi->enc_data != NULL)) {
273 0 : if (!sk_X509_INFO_push(ret, xi))
274 : goto err;
275 : xi = NULL;
276 : }
277 : ok = 1;
278 : err:
279 0 : if (xi != NULL)
280 0 : X509_INFO_free(xi);
281 0 : if (!ok) {
282 0 : for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) {
283 0 : xi = sk_X509_INFO_value(ret, i);
284 0 : X509_INFO_free(xi);
285 : }
286 0 : if (ret != sk)
287 0 : sk_X509_INFO_free(ret);
288 : ret = NULL;
289 : }
290 :
291 0 : if (name != NULL)
292 0 : OPENSSL_free(name);
293 0 : if (header != NULL)
294 0 : OPENSSL_free(header);
295 0 : if (data != NULL)
296 0 : OPENSSL_free(data);
297 0 : return (ret);
298 : }
299 :
300 : /* A TJH addition */
301 0 : int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
302 : unsigned char *kstr, int klen,
303 : pem_password_cb *cb, void *u)
304 : {
305 : EVP_CIPHER_CTX ctx;
306 : int i, ret = 0;
307 : unsigned char *data = NULL;
308 : const char *objstr = NULL;
309 : char buf[PEM_BUFSIZE];
310 : unsigned char *iv = NULL;
311 :
312 0 : if (enc != NULL) {
313 0 : objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
314 0 : if (objstr == NULL) {
315 0 : PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER);
316 0 : goto err;
317 : }
318 : }
319 :
320 : /*
321 : * now for the fun part ... if we have a private key then we have to be
322 : * able to handle a not-yet-decrypted key being written out correctly ...
323 : * if it is decrypted or it is non-encrypted then we use the base code
324 : */
325 0 : if (xi->x_pkey != NULL) {
326 0 : if ((xi->enc_data != NULL) && (xi->enc_len > 0)) {
327 0 : if (enc == NULL) {
328 0 : PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL);
329 0 : goto err;
330 : }
331 :
332 : /* copy from weirdo names into more normal things */
333 0 : iv = xi->enc_cipher.iv;
334 : data = (unsigned char *)xi->enc_data;
335 : i = xi->enc_len;
336 :
337 : /*
338 : * we take the encryption data from the internal stuff rather
339 : * than what the user has passed us ... as we have to match
340 : * exactly for some strange reason
341 : */
342 0 : objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher));
343 0 : if (objstr == NULL) {
344 0 : PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,
345 : PEM_R_UNSUPPORTED_CIPHER);
346 0 : goto err;
347 : }
348 :
349 : /* create the right magic header stuff */
350 0 : OPENSSL_assert(strlen(objstr) + 23 + 2 * enc->iv_len + 13 <=
351 : sizeof buf);
352 0 : buf[0] = '\0';
353 0 : PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
354 0 : PEM_dek_info(buf, objstr, enc->iv_len, (char *)iv);
355 :
356 : /* use the normal code to write things out */
357 0 : i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i);
358 0 : if (i <= 0)
359 : goto err;
360 : } else {
361 : /* Add DSA/DH */
362 : #ifndef OPENSSL_NO_RSA
363 : /* normal optionally encrypted stuff */
364 0 : if (PEM_write_bio_RSAPrivateKey(bp,
365 0 : xi->x_pkey->dec_pkey->pkey.rsa,
366 : enc, kstr, klen, cb, u) <= 0)
367 : goto err;
368 : #endif
369 : }
370 : }
371 :
372 : /* if we have a certificate then write it out now */
373 0 : if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0))
374 : goto err;
375 :
376 : /*
377 : * we are ignoring anything else that is loaded into the X509_INFO
378 : * structure for the moment ... as I don't need it so I'm not coding it
379 : * here and Eric can do it when this makes it into the base library --tjh
380 : */
381 :
382 : ret = 1;
383 :
384 : err:
385 0 : OPENSSL_cleanse((char *)&ctx, sizeof(ctx));
386 0 : OPENSSL_cleanse(buf, PEM_BUFSIZE);
387 0 : return (ret);
388 : }
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