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 STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u)
75 {
76 BIO *b;
77 STACK_OF(X509_INFO) *ret;
78
79 if ((b=BIO_new(BIO_s_file())) == NULL)
80 {
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 }
89 #endif
90
91 STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u)
92 {
93 X509_INFO *xi=NULL;
94 char *name=NULL,*header=NULL;
95 void *pp;
96 unsigned char *data=NULL;
97 const unsigned char *p;
98 long len,error=0;
99 int ok=0;
100 STACK_OF(X509_INFO) *ret=NULL;
101 unsigned int i,raw,ptype;
102 d2i_of_void *d2i = 0;
103
104 if (sk == NULL)
105 {
106 if ((ret=sk_X509_INFO_new_null()) == NULL)
107 {
108 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_MALLOC_FAILURE);
109 goto err;
110 }
111 }
112 else
113 ret=sk;
114
115 if ((xi=X509_INFO_new()) == NULL) goto err;
116 for (;;)
117 {
118 raw=0;
119 ptype = 0;
120 i=PEM_read_bio(bp,&name,&header,&data,&len);
121 if (i == 0)
122 {
123 error=ERR_GET_REASON(ERR_peek_last_error());
124 if (error == PEM_R_NO_START_LINE)
125 {
126 ERR_clear_error();
127 break;
128 }
129 goto err;
130 }
131 start:
132 if ( (strcmp(name,PEM_STRING_X509) == 0) ||
133 (strcmp(name,PEM_STRING_X509_OLD) == 0))
134 {
135 d2i=(D2I_OF(void))d2i_X509;
136 if (xi->x509 != NULL)
137 {
138 if (!sk_X509_INFO_push(ret,xi)) goto err;
139 if ((xi=X509_INFO_new()) == NULL) goto err;
140 goto start;
141 }
142 pp=&(xi->x509);
143 }
144 else if ((strcmp(name,PEM_STRING_X509_TRUSTED) == 0))
145 {
146 d2i=(D2I_OF(void))d2i_X509_AUX;
147 if (xi->x509 != NULL)
148 {
149 if (!sk_X509_INFO_push(ret,xi)) goto err;
150 if ((xi=X509_INFO_new()) == NULL) goto err;
151 goto start;
152 }
153 pp=&(xi->x509);
154 }
155 else if (strcmp(name,PEM_STRING_X509_CRL) == 0)
156 {
157 d2i=(D2I_OF(void))d2i_X509_CRL;
158 if (xi->crl != NULL)
159 {
160 if (!sk_X509_INFO_push(ret,xi)) goto err;
161 if ((xi=X509_INFO_new()) == NULL) goto err;
162 goto start;
163 }
164 pp=&(xi->crl);
165 }
166 else
167 #ifndef OPENSSL_NO_RSA
168 if (strcmp(name,PEM_STRING_RSA) == 0)
169 {
170 d2i=(D2I_OF(void))d2i_RSAPrivateKey;
171 if (xi->x_pkey != NULL)
172 {
173 if (!sk_X509_INFO_push(ret,xi)) goto err;
174 if ((xi=X509_INFO_new()) == NULL) goto err;
175 goto start;
176 }
177
178 xi->enc_data=NULL;
179 xi->enc_len=0;
180
181 xi->x_pkey=X509_PKEY_new();
182 ptype=EVP_PKEY_RSA;
183 pp=&xi->x_pkey->dec_pkey;
184 if ((int)strlen(header) > 10) /* assume encrypted */
185 raw=1;
186 }
187 else
188 #endif
189 #ifndef OPENSSL_NO_DSA
190 if (strcmp(name,PEM_STRING_DSA) == 0)
191 {
192 d2i=(D2I_OF(void))d2i_DSAPrivateKey;
193 if (xi->x_pkey != NULL)
194 {
195 if (!sk_X509_INFO_push(ret,xi)) goto err;
196 if ((xi=X509_INFO_new()) == NULL) goto err;
197 goto start;
198 }
199
200 xi->enc_data=NULL;
201 xi->enc_len=0;
202
203 xi->x_pkey=X509_PKEY_new();
204 ptype = EVP_PKEY_DSA;
205 pp=&xi->x_pkey->dec_pkey;
206 if ((int)strlen(header) > 10) /* assume encrypted */
207 raw=1;
208 }
209 else
210 #endif
211 #ifndef OPENSSL_NO_EC
212 if (strcmp(name,PEM_STRING_ECPRIVATEKEY) == 0)
213 {
214 d2i=(D2I_OF(void))d2i_ECPrivateKey;
215 if (xi->x_pkey != NULL)
216 {
217 if (!sk_X509_INFO_push(ret,xi)) goto err;
218 if ((xi=X509_INFO_new()) == NULL) goto err;
219 goto start;
220 }
221
222 xi->enc_data=NULL;
223 xi->enc_len=0;
224
225 xi->x_pkey=X509_PKEY_new();
226 ptype = EVP_PKEY_EC;
227 pp=&xi->x_pkey->dec_pkey;
228 if ((int)strlen(header) > 10) /* assume encrypted */
229 raw=1;
230 }
231 else
232 #endif
233 {
234 d2i=NULL;
235 pp=NULL;
236 }
237
238 if (d2i != NULL)
239 {
240 if (!raw)
241 {
242 EVP_CIPHER_INFO cipher;
243
244 if (!PEM_get_EVP_CIPHER_INFO(header,&cipher))
245 goto err;
246 if (!PEM_do_header(&cipher,data,&len,cb,u))
247 goto err;
248 p=data;
249 if (ptype)
250 {
251 if (!d2i_PrivateKey(ptype, pp, &p, len))
252 {
253 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_ASN1_LIB);
254 goto err;
255 }
256 }
257 else if (d2i(pp,&p,len) == NULL)
258 {
259 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_ASN1_LIB);
260 goto err;
261 }
262 }
263 else
264 { /* encrypted RSA data */
265 if (!PEM_get_EVP_CIPHER_INFO(header,
266 &xi->enc_cipher)) goto err;
267 xi->enc_data=(char *)data;
268 xi->enc_len=(int)len;
269 data=NULL;
270 }
271 }
272 else {
273 /* unknown */
274 }
275 if (name != NULL) OPENSSL_free(name);
276 if (header != NULL) OPENSSL_free(header);
277 if (data != NULL) OPENSSL_free(data);
278 name=NULL;
279 header=NULL;
280 data=NULL;
281 }
282
283 /* if the last one hasn't been pushed yet and there is anything
284 * in it then add it to the stack ...
285 */
286 if ((xi->x509 != NULL) || (xi->crl != NULL) ||
287 (xi->x_pkey != NULL) || (xi->enc_data != NULL))
288 {
289 if (!sk_X509_INFO_push(ret,xi)) goto err;
290 xi=NULL;
291 }
292 ok=1;
293 err:
294 if (xi != NULL) X509_INFO_free(xi);
295 if (!ok)
296 {
297 for (i=0; ((int)i)<sk_X509_INFO_num(ret); i++)
298 {
299 xi=sk_X509_INFO_value(ret,i);
300 X509_INFO_free(xi);
301 }
302 if (ret != sk) sk_X509_INFO_free(ret);
303 ret=NULL;
304 }
305
306 if (name != NULL) OPENSSL_free(name);
307 if (header != NULL) OPENSSL_free(header);
308 if (data != NULL) OPENSSL_free(data);
309 return(ret);
310 }
311
312
313 /* A TJH addition */
314 int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
315 unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
316 {
317 EVP_CIPHER_CTX ctx;
318 int i,ret=0;
319 unsigned char *data=NULL;
320 const char *objstr=NULL;
321 char buf[PEM_BUFSIZE];
322 unsigned char *iv=NULL;
323
324 if (enc != NULL)
325 {
326 objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
327 if (objstr == NULL)
328 {
329 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
330 goto err;
331 }
332 }
333
334 /* now for the fun part ... if we have a private key then
335 * we have to be able to handle a not-yet-decrypted key
336 * being written out correctly ... if it is decrypted or
337 * it is non-encrypted then we use the base code
338 */
339 if (xi->x_pkey!=NULL)
340 {
341 if ( (xi->enc_data!=NULL) && (xi->enc_len>0) )
342 {
343 if (enc == NULL)
344 {
345 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_CIPHER_IS_NULL);
346 goto err;
347 }
348
349 /* copy from weirdo names into more normal things */
350 iv=xi->enc_cipher.iv;
351 data=(unsigned char *)xi->enc_data;
352 i=xi->enc_len;
353
354 /* we take the encryption data from the
355 * internal stuff rather than what the
356 * user has passed us ... as we have to
357 * match exactly for some strange reason
358 */
359 objstr=OBJ_nid2sn(
360 EVP_CIPHER_nid(xi->enc_cipher.cipher));
361 if (objstr == NULL)
362 {
363 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
364 goto err;
365 }
366
367 /* create the right magic header stuff */
368 OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf);
369 buf[0]='\0';
370 PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
371 PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv);
372
373 /* use the normal code to write things out */
374 i=PEM_write_bio(bp,PEM_STRING_RSA,buf,data,i);
375 if (i <= 0) goto err;
376 }
377 else
378 {
379 /* Add DSA/DH */
380 #ifndef OPENSSL_NO_RSA
381 /* normal optionally encrypted stuff */
382 if (PEM_write_bio_RSAPrivateKey(bp,
383 xi->x_pkey->dec_pkey->pkey.rsa,
384 enc,kstr,klen,cb,u)<=0)
385 goto err;
386 #endif
387 }
388 }
389
390 /* if we have a certificate then write it out now */
391 if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp,xi->x509) <= 0))
392 goto err;
393
394 /* we are ignoring anything else that is loaded into the X509_INFO
395 * structure for the moment ... as I don't need it so I'm not
396 * coding it here and Eric can do it when this makes it into the
397 * base library --tjh
398 */
399
400 ret=1;
401
402 err:
403 OPENSSL_cleanse((char *)&ctx,sizeof(ctx));
404 OPENSSL_cleanse(buf,PEM_BUFSIZE);
405 return(ret);
406 }