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