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031e5cce SM |
1 | /* crypto/pem/pem_info.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
3e575651 | 4 | * |
031e5cce SM |
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.] | |
3e575651 SL |
57 | */ |
58 | ||
59 | #include <stdio.h> | |
031e5cce | 60 | #include "cryptlib.h" |
3e575651 SL |
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> | |
031e5cce SM |
66 | #ifndef OPENSSL_NO_RSA |
67 | # include <openssl/rsa.h> | |
68 | #endif | |
69 | #ifndef OPENSSL_NO_DSA | |
70 | # include <openssl/dsa.h> | |
71 | #endif | |
3e575651 | 72 | |
031e5cce | 73 | #ifndef OPENSSL_NO_FP_API |
d3819813 MTL |
74 | 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; | |
3e575651 | 79 | |
d3819813 MTL |
80 | if ((b = BIO_new(BIO_s_file())) == NULL) { |
81 | PEMerr(PEM_F_PEM_X509_INFO_READ, ERR_R_BUF_LIB); | |
82 | return (0); | |
83 | } | |
84 | BIO_set_fp(b, fp, BIO_NOCLOSE); | |
85 | ret = PEM_X509_INFO_read_bio(b, sk, cb, u); | |
86 | BIO_free(b); | |
87 | return (ret); | |
88 | } | |
3e575651 SL |
89 | #endif |
90 | ||
d3819813 MTL |
91 | 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 | char *name = NULL, *header = NULL; | |
96 | void *pp; | |
97 | 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; | |
3e575651 | 104 | |
d3819813 MTL |
105 | if (sk == NULL) { |
106 | if ((ret = sk_X509_INFO_new_null()) == NULL) { | |
107 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_MALLOC_FAILURE); | |
108 | goto err; | |
109 | } | |
110 | } else | |
111 | ret = sk; | |
3e575651 | 112 | |
d3819813 MTL |
113 | if ((xi = X509_INFO_new()) == NULL) |
114 | goto err; | |
115 | for (;;) { | |
116 | raw = 0; | |
117 | ptype = 0; | |
118 | i = PEM_read_bio(bp, &name, &header, &data, &len); | |
119 | if (i == 0) { | |
120 | error = ERR_GET_REASON(ERR_peek_last_error()); | |
121 | if (error == PEM_R_NO_START_LINE) { | |
122 | ERR_clear_error(); | |
123 | break; | |
124 | } | |
125 | goto err; | |
126 | } | |
127 | start: | |
128 | if ((strcmp(name, PEM_STRING_X509) == 0) || | |
129 | (strcmp(name, PEM_STRING_X509_OLD) == 0)) { | |
130 | d2i = (D2I_OF(void)) d2i_X509; | |
131 | if (xi->x509 != NULL) { | |
132 | if (!sk_X509_INFO_push(ret, xi)) | |
133 | goto err; | |
134 | if ((xi = X509_INFO_new()) == NULL) | |
135 | goto err; | |
136 | goto start; | |
137 | } | |
138 | pp = &(xi->x509); | |
139 | } else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) { | |
140 | d2i = (D2I_OF(void)) d2i_X509_AUX; | |
141 | if (xi->x509 != NULL) { | |
142 | if (!sk_X509_INFO_push(ret, xi)) | |
143 | goto err; | |
144 | if ((xi = X509_INFO_new()) == NULL) | |
145 | goto err; | |
146 | goto start; | |
147 | } | |
148 | pp = &(xi->x509); | |
149 | } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) { | |
150 | d2i = (D2I_OF(void)) d2i_X509_CRL; | |
151 | if (xi->crl != NULL) { | |
152 | if (!sk_X509_INFO_push(ret, xi)) | |
153 | goto err; | |
154 | if ((xi = X509_INFO_new()) == NULL) | |
155 | goto err; | |
156 | goto start; | |
157 | } | |
158 | pp = &(xi->crl); | |
159 | } else | |
3e575651 | 160 | #ifndef OPENSSL_NO_RSA |
d3819813 MTL |
161 | if (strcmp(name, PEM_STRING_RSA) == 0) { |
162 | d2i = (D2I_OF(void)) d2i_RSAPrivateKey; | |
163 | if (xi->x_pkey != NULL) { | |
164 | if (!sk_X509_INFO_push(ret, xi)) | |
165 | goto err; | |
166 | if ((xi = X509_INFO_new()) == NULL) | |
167 | goto err; | |
168 | goto start; | |
169 | } | |
3e575651 | 170 | |
d3819813 MTL |
171 | xi->enc_data = NULL; |
172 | xi->enc_len = 0; | |
3e575651 | 173 | |
d3819813 | 174 | xi->x_pkey = X509_PKEY_new(); |
62f0afa2 MTL |
175 | if (xi->x_pkey == NULL) |
176 | goto err; | |
d3819813 MTL |
177 | ptype = EVP_PKEY_RSA; |
178 | pp = &xi->x_pkey->dec_pkey; | |
179 | if ((int)strlen(header) > 10) /* assume encrypted */ | |
180 | raw = 1; | |
181 | } else | |
3e575651 SL |
182 | #endif |
183 | #ifndef OPENSSL_NO_DSA | |
d3819813 MTL |
184 | if (strcmp(name, PEM_STRING_DSA) == 0) { |
185 | d2i = (D2I_OF(void)) d2i_DSAPrivateKey; | |
186 | if (xi->x_pkey != NULL) { | |
187 | if (!sk_X509_INFO_push(ret, xi)) | |
188 | goto err; | |
189 | if ((xi = X509_INFO_new()) == NULL) | |
190 | goto err; | |
191 | goto start; | |
192 | } | |
3e575651 | 193 | |
d3819813 MTL |
194 | xi->enc_data = NULL; |
195 | xi->enc_len = 0; | |
3e575651 | 196 | |
d3819813 | 197 | xi->x_pkey = X509_PKEY_new(); |
62f0afa2 MTL |
198 | if (xi->x_pkey == NULL) |
199 | goto err; | |
d3819813 MTL |
200 | ptype = EVP_PKEY_DSA; |
201 | pp = &xi->x_pkey->dec_pkey; | |
202 | if ((int)strlen(header) > 10) /* assume encrypted */ | |
203 | raw = 1; | |
204 | } else | |
3e575651 SL |
205 | #endif |
206 | #ifndef OPENSSL_NO_EC | |
d3819813 MTL |
207 | if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) { |
208 | d2i = (D2I_OF(void)) d2i_ECPrivateKey; | |
209 | if (xi->x_pkey != NULL) { | |
210 | if (!sk_X509_INFO_push(ret, xi)) | |
211 | goto err; | |
212 | if ((xi = X509_INFO_new()) == NULL) | |
213 | goto err; | |
214 | goto start; | |
215 | } | |
216 | ||
217 | xi->enc_data = NULL; | |
218 | xi->enc_len = 0; | |
219 | ||
220 | xi->x_pkey = X509_PKEY_new(); | |
62f0afa2 MTL |
221 | if (xi->x_pkey == NULL) |
222 | goto err; | |
d3819813 MTL |
223 | ptype = EVP_PKEY_EC; |
224 | pp = &xi->x_pkey->dec_pkey; | |
225 | if ((int)strlen(header) > 10) /* assume encrypted */ | |
226 | raw = 1; | |
227 | } else | |
3e575651 | 228 | #endif |
d3819813 MTL |
229 | { |
230 | d2i = NULL; | |
231 | pp = NULL; | |
232 | } | |
3e575651 | 233 | |
d3819813 MTL |
234 | if (d2i != NULL) { |
235 | if (!raw) { | |
236 | EVP_CIPHER_INFO cipher; | |
3e575651 | 237 | |
d3819813 MTL |
238 | if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) |
239 | goto err; | |
240 | if (!PEM_do_header(&cipher, data, &len, cb, u)) | |
241 | goto err; | |
242 | p = data; | |
243 | if (ptype) { | |
244 | if (!d2i_PrivateKey(ptype, pp, &p, len)) { | |
245 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB); | |
246 | goto err; | |
247 | } | |
248 | } else if (d2i(pp, &p, len) == NULL) { | |
249 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB); | |
250 | goto err; | |
251 | } | |
252 | } else { /* encrypted RSA data */ | |
253 | if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher)) | |
254 | goto err; | |
255 | xi->enc_data = (char *)data; | |
256 | xi->enc_len = (int)len; | |
257 | data = NULL; | |
258 | } | |
259 | } else { | |
260 | /* unknown */ | |
261 | } | |
031e5cce SM |
262 | if (name != NULL) |
263 | OPENSSL_free(name); | |
264 | if (header != NULL) | |
265 | OPENSSL_free(header); | |
266 | if (data != NULL) | |
267 | OPENSSL_free(data); | |
d3819813 MTL |
268 | name = NULL; |
269 | header = NULL; | |
270 | data = NULL; | |
271 | } | |
3e575651 | 272 | |
d3819813 MTL |
273 | /* |
274 | * if the last one hasn't been pushed yet and there is anything in it | |
275 | * then add it to the stack ... | |
276 | */ | |
277 | if ((xi->x509 != NULL) || (xi->crl != NULL) || | |
278 | (xi->x_pkey != NULL) || (xi->enc_data != NULL)) { | |
279 | if (!sk_X509_INFO_push(ret, xi)) | |
280 | goto err; | |
281 | xi = NULL; | |
282 | } | |
283 | ok = 1; | |
284 | err: | |
031e5cce SM |
285 | if (xi != NULL) |
286 | X509_INFO_free(xi); | |
d3819813 MTL |
287 | if (!ok) { |
288 | for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) { | |
289 | xi = sk_X509_INFO_value(ret, i); | |
290 | X509_INFO_free(xi); | |
291 | } | |
292 | if (ret != sk) | |
293 | sk_X509_INFO_free(ret); | |
294 | ret = NULL; | |
295 | } | |
3e575651 | 296 | |
031e5cce SM |
297 | if (name != NULL) |
298 | OPENSSL_free(name); | |
299 | if (header != NULL) | |
300 | OPENSSL_free(header); | |
301 | if (data != NULL) | |
302 | OPENSSL_free(data); | |
d3819813 MTL |
303 | return (ret); |
304 | } | |
3e575651 SL |
305 | |
306 | /* A TJH addition */ | |
307 | int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, | |
d3819813 MTL |
308 | unsigned char *kstr, int klen, |
309 | pem_password_cb *cb, void *u) | |
310 | { | |
031e5cce | 311 | EVP_CIPHER_CTX ctx; |
d3819813 MTL |
312 | int i, ret = 0; |
313 | unsigned char *data = NULL; | |
314 | const char *objstr = NULL; | |
315 | char buf[PEM_BUFSIZE]; | |
316 | unsigned char *iv = NULL; | |
317 | ||
318 | if (enc != NULL) { | |
319 | objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); | |
320 | if (objstr == NULL) { | |
321 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER); | |
322 | goto err; | |
323 | } | |
324 | } | |
325 | ||
326 | /* | |
327 | * now for the fun part ... if we have a private key then we have to be | |
328 | * able to handle a not-yet-decrypted key being written out correctly ... | |
329 | * if it is decrypted or it is non-encrypted then we use the base code | |
330 | */ | |
331 | if (xi->x_pkey != NULL) { | |
332 | if ((xi->enc_data != NULL) && (xi->enc_len > 0)) { | |
333 | if (enc == NULL) { | |
334 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL); | |
335 | goto err; | |
336 | } | |
3e575651 | 337 | |
d3819813 MTL |
338 | /* copy from weirdo names into more normal things */ |
339 | iv = xi->enc_cipher.iv; | |
340 | data = (unsigned char *)xi->enc_data; | |
341 | i = xi->enc_len; | |
3e575651 | 342 | |
d3819813 MTL |
343 | /* |
344 | * we take the encryption data from the internal stuff rather | |
345 | * than what the user has passed us ... as we have to match | |
346 | * exactly for some strange reason | |
347 | */ | |
348 | objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher)); | |
349 | if (objstr == NULL) { | |
350 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, | |
351 | PEM_R_UNSUPPORTED_CIPHER); | |
352 | goto err; | |
353 | } | |
3e575651 | 354 | |
d3819813 | 355 | /* create the right magic header stuff */ |
031e5cce | 356 | OPENSSL_assert(strlen(objstr) + 23 + 2 * enc->iv_len + 13 <= |
d3819813 MTL |
357 | sizeof buf); |
358 | buf[0] = '\0'; | |
359 | PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); | |
031e5cce | 360 | PEM_dek_info(buf, objstr, enc->iv_len, (char *)iv); |
3e575651 | 361 | |
d3819813 MTL |
362 | /* use the normal code to write things out */ |
363 | i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i); | |
364 | if (i <= 0) | |
365 | goto err; | |
366 | } else { | |
367 | /* Add DSA/DH */ | |
3e575651 | 368 | #ifndef OPENSSL_NO_RSA |
d3819813 MTL |
369 | /* normal optionally encrypted stuff */ |
370 | if (PEM_write_bio_RSAPrivateKey(bp, | |
031e5cce | 371 | xi->x_pkey->dec_pkey->pkey.rsa, |
d3819813 MTL |
372 | enc, kstr, klen, cb, u) <= 0) |
373 | goto err; | |
3e575651 | 374 | #endif |
d3819813 MTL |
375 | } |
376 | } | |
3e575651 | 377 | |
d3819813 MTL |
378 | /* if we have a certificate then write it out now */ |
379 | if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0)) | |
380 | goto err; | |
3e575651 | 381 | |
d3819813 MTL |
382 | /* |
383 | * we are ignoring anything else that is loaded into the X509_INFO | |
384 | * structure for the moment ... as I don't need it so I'm not coding it | |
385 | * here and Eric can do it when this makes it into the base library --tjh | |
386 | */ | |
3e575651 | 387 | |
d3819813 | 388 | ret = 1; |
3e575651 | 389 | |
d3819813 | 390 | err: |
031e5cce | 391 | OPENSSL_cleanse((char *)&ctx, sizeof(ctx)); |
d3819813 MTL |
392 | OPENSSL_cleanse(buf, PEM_BUFSIZE); |
393 | return (ret); | |
394 | } |