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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_STDIO | |
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 | } |