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 <openssl/pem.h>
60
61 #include <assert.h>
62 #include <stdio.h>
63 #include <string.h>
64
65 #include <openssl/buf.h>
66 #include <openssl/dsa.h>
67 #include <openssl/err.h>
68 #include <openssl/evp.h>
69 #include <openssl/mem.h>
70 #include <openssl/obj.h>
71 #include <openssl/rsa.h>
72 #include <openssl/x509.h>
73
74
75 #ifndef OPENSSL_NO_FP_API
STACK_OF(X509_INFO)76 STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u)
77 {
78 BIO *b;
79 STACK_OF(X509_INFO) *ret;
80
81 if ((b=BIO_new(BIO_s_file())) == NULL)
82 {
83 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
84 return(0);
85 }
86 BIO_set_fp(b,fp,BIO_NOCLOSE);
87 ret=PEM_X509_INFO_read_bio(b,sk,cb,u);
88 BIO_free(b);
89 return(ret);
90 }
91 #endif
92
STACK_OF(X509_INFO)93 STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u)
94 {
95 X509_INFO *xi=NULL;
96 char *name=NULL,*header=NULL;
97 void *pp;
98 unsigned char *data=NULL;
99 const unsigned char *p;
100 long len,error=0;
101 int ok=0;
102 STACK_OF(X509_INFO) *ret=NULL;
103 unsigned int i,raw,ptype;
104 d2i_of_void *d2i = 0;
105
106 if (sk == NULL)
107 {
108 if ((ret=sk_X509_INFO_new_null()) == NULL)
109 {
110 OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
111 goto err;
112 }
113 }
114 else
115 ret=sk;
116
117 if ((xi=X509_INFO_new()) == NULL) goto err;
118 for (;;)
119 {
120 raw=0;
121 ptype = 0;
122 i=PEM_read_bio(bp,&name,&header,&data,&len);
123 if (i == 0)
124 {
125 error=ERR_GET_REASON(ERR_peek_last_error());
126 if (error == PEM_R_NO_START_LINE)
127 {
128 ERR_clear_error();
129 break;
130 }
131 goto err;
132 }
133 start:
134 if ( (strcmp(name,PEM_STRING_X509) == 0) ||
135 (strcmp(name,PEM_STRING_X509_OLD) == 0))
136 {
137 d2i=(D2I_OF(void))d2i_X509;
138 if (xi->x509 != NULL)
139 {
140 if (!sk_X509_INFO_push(ret,xi)) goto err;
141 if ((xi=X509_INFO_new()) == NULL) goto err;
142 goto start;
143 }
144 pp=&(xi->x509);
145 }
146 else if ((strcmp(name,PEM_STRING_X509_TRUSTED) == 0))
147 {
148 d2i=(D2I_OF(void))d2i_X509_AUX;
149 if (xi->x509 != NULL)
150 {
151 if (!sk_X509_INFO_push(ret,xi)) goto err;
152 if ((xi=X509_INFO_new()) == NULL) goto err;
153 goto start;
154 }
155 pp=&(xi->x509);
156 }
157 else if (strcmp(name,PEM_STRING_X509_CRL) == 0)
158 {
159 d2i=(D2I_OF(void))d2i_X509_CRL;
160 if (xi->crl != NULL)
161 {
162 if (!sk_X509_INFO_push(ret,xi)) goto err;
163 if ((xi=X509_INFO_new()) == NULL) goto err;
164 goto start;
165 }
166 pp=&(xi->crl);
167 }
168 else
169 if (strcmp(name,PEM_STRING_RSA) == 0)
170 {
171 d2i=(D2I_OF(void))d2i_RSAPrivateKey;
172 if (xi->x_pkey != NULL)
173 {
174 if (!sk_X509_INFO_push(ret,xi)) goto err;
175 if ((xi=X509_INFO_new()) == NULL) goto err;
176 goto start;
177 }
178
179 xi->enc_data=NULL;
180 xi->enc_len=0;
181
182 xi->x_pkey=X509_PKEY_new();
183 ptype=EVP_PKEY_RSA;
184 pp=&xi->x_pkey->dec_pkey;
185 if ((int)strlen(header) > 10) /* assume encrypted */
186 raw=1;
187 }
188 else
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 if (strcmp(name,PEM_STRING_ECPRIVATEKEY) == 0)
212 {
213 d2i=(D2I_OF(void))d2i_ECPrivateKey;
214 if (xi->x_pkey != NULL)
215 {
216 if (!sk_X509_INFO_push(ret,xi)) goto err;
217 if ((xi=X509_INFO_new()) == NULL) goto err;
218 goto start;
219 }
220
221 xi->enc_data=NULL;
222 xi->enc_len=0;
223
224 xi->x_pkey=X509_PKEY_new();
225 ptype = EVP_PKEY_EC;
226 pp=&xi->x_pkey->dec_pkey;
227 if ((int)strlen(header) > 10) /* assume encrypted */
228 raw=1;
229 }
230 else
231 {
232 d2i=NULL;
233 pp=NULL;
234 }
235
236 if (d2i != NULL)
237 {
238 if (!raw)
239 {
240 EVP_CIPHER_INFO cipher;
241
242 if (!PEM_get_EVP_CIPHER_INFO(header,&cipher))
243 goto err;
244 if (!PEM_do_header(&cipher,data,&len,cb,u))
245 goto err;
246 p=data;
247 if (ptype)
248 {
249 if (!d2i_PrivateKey(ptype, pp, &p, len))
250 {
251 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
252 goto err;
253 }
254 }
255 else if (d2i(pp,&p,len) == NULL)
256 {
257 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
258 goto err;
259 }
260 }
261 else
262 { /* encrypted RSA data */
263 if (!PEM_get_EVP_CIPHER_INFO(header,
264 &xi->enc_cipher)) goto err;
265 xi->enc_data=(char *)data;
266 xi->enc_len=(int)len;
267 data=NULL;
268 }
269 }
270 else {
271 /* unknown */
272 }
273 if (name != NULL) OPENSSL_free(name);
274 if (header != NULL) OPENSSL_free(header);
275 if (data != NULL) OPENSSL_free(data);
276 name=NULL;
277 header=NULL;
278 data=NULL;
279 }
280
281 /* if the last one hasn't been pushed yet and there is anything
282 * in it then add it to the stack ...
283 */
284 if ((xi->x509 != NULL) || (xi->crl != NULL) ||
285 (xi->x_pkey != NULL) || (xi->enc_data != NULL))
286 {
287 if (!sk_X509_INFO_push(ret,xi)) goto err;
288 xi=NULL;
289 }
290 ok=1;
291 err:
292 if (xi != NULL) X509_INFO_free(xi);
293 if (!ok)
294 {
295 for (i=0; i<sk_X509_INFO_num(ret); i++)
296 {
297 xi=sk_X509_INFO_value(ret,i);
298 X509_INFO_free(xi);
299 }
300 if (ret != sk) sk_X509_INFO_free(ret);
301 ret=NULL;
302 }
303
304 if (name != NULL) OPENSSL_free(name);
305 if (header != NULL) OPENSSL_free(header);
306 if (data != NULL) OPENSSL_free(data);
307 return(ret);
308 }
309
310
311 /* A TJH addition */
PEM_X509_INFO_write_bio(BIO * bp,X509_INFO * xi,EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)312 int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
313 unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
314 {
315 EVP_CIPHER_CTX ctx;
316 int i,ret=0;
317 unsigned char *data=NULL;
318 const char *objstr=NULL;
319 char buf[PEM_BUFSIZE];
320 unsigned char *iv=NULL;
321 unsigned iv_len = 0;
322
323 if (enc != NULL)
324 {
325 iv_len = EVP_CIPHER_iv_length(enc);
326 objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
327 if (objstr == NULL)
328 {
329 OPENSSL_PUT_ERROR(PEM, 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 OPENSSL_PUT_ERROR(PEM, 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 OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
364 goto err;
365 }
366
367 /* create the right magic header stuff */
368 assert(strlen(objstr)+23+2*iv_len+13 <= sizeof buf);
369 buf[0]='\0';
370 PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
371 PEM_dek_info(buf,objstr,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 /* normal optionally encrypted stuff */
381 if (PEM_write_bio_RSAPrivateKey(bp,
382 xi->x_pkey->dec_pkey->pkey.rsa,
383 enc,kstr,klen,cb,u)<=0)
384 goto err;
385 }
386 }
387
388 /* if we have a certificate then write it out now */
389 if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp,xi->x509) <= 0))
390 goto err;
391
392 /* we are ignoring anything else that is loaded into the X509_INFO
393 * structure for the moment ... as I don't need it so I'm not
394 * coding it here and Eric can do it when this makes it into the
395 * base library --tjh
396 */
397
398 ret=1;
399
400 err:
401 OPENSSL_cleanse((char *)&ctx,sizeof(ctx));
402 OPENSSL_cleanse(buf,PEM_BUFSIZE);
403 return(ret);
404 }
405