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62867571 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
d02b48c6 | 3 | * |
16742672 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
ec577822 BM |
12 | #include <openssl/buffer.h> |
13 | #include <openssl/objects.h> | |
14 | #include <openssl/evp.h> | |
15 | #include <openssl/x509.h> | |
16 | #include <openssl/pem.h> | |
3c27208f RS |
17 | #include <openssl/rsa.h> |
18 | #include <openssl/dsa.h> | |
d02b48c6 | 19 | |
4b618848 | 20 | #ifndef OPENSSL_NO_STDIO |
0f113f3e MC |
21 | STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, |
22 | pem_password_cb *cb, void *u) | |
23 | { | |
24 | BIO *b; | |
25 | STACK_OF(X509_INFO) *ret; | |
d02b48c6 | 26 | |
0f113f3e MC |
27 | if ((b = BIO_new(BIO_s_file())) == NULL) { |
28 | PEMerr(PEM_F_PEM_X509_INFO_READ, ERR_R_BUF_LIB); | |
26a7d938 | 29 | return 0; |
0f113f3e MC |
30 | } |
31 | BIO_set_fp(b, fp, BIO_NOCLOSE); | |
32 | ret = PEM_X509_INFO_read_bio(b, sk, cb, u); | |
33 | BIO_free(b); | |
26a7d938 | 34 | return ret; |
0f113f3e | 35 | } |
d02b48c6 RE |
36 | #endif |
37 | ||
0f113f3e MC |
38 | STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, |
39 | pem_password_cb *cb, void *u) | |
40 | { | |
41 | X509_INFO *xi = NULL; | |
42 | char *name = NULL, *header = NULL; | |
43 | void *pp; | |
44 | unsigned char *data = NULL; | |
45 | const unsigned char *p; | |
46 | long len, error = 0; | |
47 | int ok = 0; | |
48 | STACK_OF(X509_INFO) *ret = NULL; | |
49 | unsigned int i, raw, ptype; | |
50 | d2i_of_void *d2i = 0; | |
d02b48c6 | 51 | |
0f113f3e MC |
52 | if (sk == NULL) { |
53 | if ((ret = sk_X509_INFO_new_null()) == NULL) { | |
54 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_MALLOC_FAILURE); | |
55 | goto err; | |
56 | } | |
57 | } else | |
58 | ret = sk; | |
d02b48c6 | 59 | |
0f113f3e MC |
60 | if ((xi = X509_INFO_new()) == NULL) |
61 | goto err; | |
62 | for (;;) { | |
63 | raw = 0; | |
64 | ptype = 0; | |
65 | i = PEM_read_bio(bp, &name, &header, &data, &len); | |
66 | if (i == 0) { | |
67 | error = ERR_GET_REASON(ERR_peek_last_error()); | |
68 | if (error == PEM_R_NO_START_LINE) { | |
69 | ERR_clear_error(); | |
70 | break; | |
71 | } | |
72 | goto err; | |
73 | } | |
74 | start: | |
75 | if ((strcmp(name, PEM_STRING_X509) == 0) || | |
76 | (strcmp(name, PEM_STRING_X509_OLD) == 0)) { | |
77 | d2i = (D2I_OF(void)) d2i_X509; | |
78 | if (xi->x509 != NULL) { | |
79 | if (!sk_X509_INFO_push(ret, xi)) | |
80 | goto err; | |
81 | if ((xi = X509_INFO_new()) == NULL) | |
82 | goto err; | |
83 | goto start; | |
84 | } | |
85 | pp = &(xi->x509); | |
86 | } else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) { | |
87 | d2i = (D2I_OF(void)) d2i_X509_AUX; | |
88 | if (xi->x509 != NULL) { | |
89 | if (!sk_X509_INFO_push(ret, xi)) | |
90 | goto err; | |
91 | if ((xi = X509_INFO_new()) == NULL) | |
92 | goto err; | |
93 | goto start; | |
94 | } | |
95 | pp = &(xi->x509); | |
96 | } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) { | |
97 | d2i = (D2I_OF(void)) d2i_X509_CRL; | |
98 | if (xi->crl != NULL) { | |
99 | if (!sk_X509_INFO_push(ret, xi)) | |
100 | goto err; | |
101 | if ((xi = X509_INFO_new()) == NULL) | |
102 | goto err; | |
103 | goto start; | |
104 | } | |
105 | pp = &(xi->crl); | |
106 | } else | |
cf1b7d96 | 107 | #ifndef OPENSSL_NO_RSA |
0f113f3e MC |
108 | if (strcmp(name, PEM_STRING_RSA) == 0) { |
109 | d2i = (D2I_OF(void)) d2i_RSAPrivateKey; | |
110 | if (xi->x_pkey != NULL) { | |
111 | if (!sk_X509_INFO_push(ret, xi)) | |
112 | goto err; | |
113 | if ((xi = X509_INFO_new()) == NULL) | |
114 | goto err; | |
115 | goto start; | |
116 | } | |
d02b48c6 | 117 | |
0f113f3e MC |
118 | xi->enc_data = NULL; |
119 | xi->enc_len = 0; | |
d02b48c6 | 120 | |
0f113f3e | 121 | xi->x_pkey = X509_PKEY_new(); |
90945fa3 MC |
122 | if (xi->x_pkey == NULL) |
123 | goto err; | |
0f113f3e MC |
124 | ptype = EVP_PKEY_RSA; |
125 | pp = &xi->x_pkey->dec_pkey; | |
126 | if ((int)strlen(header) > 10) /* assume encrypted */ | |
127 | raw = 1; | |
128 | } else | |
d02b48c6 | 129 | #endif |
cf1b7d96 | 130 | #ifndef OPENSSL_NO_DSA |
0f113f3e MC |
131 | if (strcmp(name, PEM_STRING_DSA) == 0) { |
132 | d2i = (D2I_OF(void)) d2i_DSAPrivateKey; | |
133 | if (xi->x_pkey != NULL) { | |
134 | if (!sk_X509_INFO_push(ret, xi)) | |
135 | goto err; | |
136 | if ((xi = X509_INFO_new()) == NULL) | |
137 | goto err; | |
138 | goto start; | |
139 | } | |
d02b48c6 | 140 | |
0f113f3e MC |
141 | xi->enc_data = NULL; |
142 | xi->enc_len = 0; | |
d02b48c6 | 143 | |
0f113f3e | 144 | xi->x_pkey = X509_PKEY_new(); |
90945fa3 MC |
145 | if (xi->x_pkey == NULL) |
146 | goto err; | |
0f113f3e MC |
147 | ptype = EVP_PKEY_DSA; |
148 | pp = &xi->x_pkey->dec_pkey; | |
149 | if ((int)strlen(header) > 10) /* assume encrypted */ | |
150 | raw = 1; | |
151 | } else | |
4d94ae00 | 152 | #endif |
14a7cfb3 | 153 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
154 | if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) { |
155 | d2i = (D2I_OF(void)) d2i_ECPrivateKey; | |
156 | if (xi->x_pkey != NULL) { | |
157 | if (!sk_X509_INFO_push(ret, xi)) | |
158 | goto err; | |
159 | if ((xi = X509_INFO_new()) == NULL) | |
160 | goto err; | |
161 | goto start; | |
162 | } | |
163 | ||
164 | xi->enc_data = NULL; | |
165 | xi->enc_len = 0; | |
166 | ||
167 | xi->x_pkey = X509_PKEY_new(); | |
90945fa3 MC |
168 | if (xi->x_pkey == NULL) |
169 | goto err; | |
0f113f3e MC |
170 | ptype = EVP_PKEY_EC; |
171 | pp = &xi->x_pkey->dec_pkey; | |
172 | if ((int)strlen(header) > 10) /* assume encrypted */ | |
173 | raw = 1; | |
174 | } else | |
d02b48c6 | 175 | #endif |
0f113f3e MC |
176 | { |
177 | d2i = NULL; | |
178 | pp = NULL; | |
179 | } | |
d02b48c6 | 180 | |
0f113f3e MC |
181 | if (d2i != NULL) { |
182 | if (!raw) { | |
183 | EVP_CIPHER_INFO cipher; | |
d02b48c6 | 184 | |
0f113f3e MC |
185 | if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) |
186 | goto err; | |
187 | if (!PEM_do_header(&cipher, data, &len, cb, u)) | |
188 | goto err; | |
189 | p = data; | |
190 | if (ptype) { | |
191 | if (!d2i_PrivateKey(ptype, pp, &p, len)) { | |
192 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB); | |
193 | goto err; | |
194 | } | |
195 | } else if (d2i(pp, &p, len) == NULL) { | |
196 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB); | |
197 | goto err; | |
198 | } | |
199 | } else { /* encrypted RSA data */ | |
200 | if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher)) | |
201 | goto err; | |
202 | xi->enc_data = (char *)data; | |
203 | xi->enc_len = (int)len; | |
204 | data = NULL; | |
205 | } | |
206 | } else { | |
207 | /* unknown */ | |
208 | } | |
b548a1f1 | 209 | OPENSSL_free(name); |
0f113f3e | 210 | name = NULL; |
b548a1f1 | 211 | OPENSSL_free(header); |
0f113f3e | 212 | header = NULL; |
b548a1f1 | 213 | OPENSSL_free(data); |
0f113f3e MC |
214 | data = NULL; |
215 | } | |
d02b48c6 | 216 | |
0f113f3e MC |
217 | /* |
218 | * if the last one hasn't been pushed yet and there is anything in it | |
219 | * then add it to the stack ... | |
220 | */ | |
221 | if ((xi->x509 != NULL) || (xi->crl != NULL) || | |
222 | (xi->x_pkey != NULL) || (xi->enc_data != NULL)) { | |
223 | if (!sk_X509_INFO_push(ret, xi)) | |
224 | goto err; | |
225 | xi = NULL; | |
226 | } | |
227 | ok = 1; | |
228 | err: | |
222561fe | 229 | X509_INFO_free(xi); |
0f113f3e MC |
230 | if (!ok) { |
231 | for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) { | |
232 | xi = sk_X509_INFO_value(ret, i); | |
233 | X509_INFO_free(xi); | |
234 | } | |
235 | if (ret != sk) | |
236 | sk_X509_INFO_free(ret); | |
237 | ret = NULL; | |
238 | } | |
d02b48c6 | 239 | |
b548a1f1 RS |
240 | OPENSSL_free(name); |
241 | OPENSSL_free(header); | |
242 | OPENSSL_free(data); | |
26a7d938 | 243 | return ret; |
0f113f3e | 244 | } |
d02b48c6 RE |
245 | |
246 | /* A TJH addition */ | |
6b691a5c | 247 | int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, |
0f113f3e MC |
248 | unsigned char *kstr, int klen, |
249 | pem_password_cb *cb, void *u) | |
250 | { | |
0f113f3e MC |
251 | int i, ret = 0; |
252 | unsigned char *data = NULL; | |
253 | const char *objstr = NULL; | |
254 | char buf[PEM_BUFSIZE]; | |
255 | unsigned char *iv = NULL; | |
256 | ||
257 | if (enc != NULL) { | |
258 | objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); | |
e40ada04 MC |
259 | if (objstr == NULL |
260 | /* | |
261 | * Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n" | |
262 | * fits into buf | |
263 | */ | |
264 | || (strlen(objstr) + 23 + 2 * EVP_CIPHER_iv_length(enc) + 13) | |
265 | > sizeof(buf)) { | |
0f113f3e MC |
266 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER); |
267 | goto err; | |
268 | } | |
269 | } | |
d02b48c6 | 270 | |
0f113f3e MC |
271 | /* |
272 | * now for the fun part ... if we have a private key then we have to be | |
273 | * able to handle a not-yet-decrypted key being written out correctly ... | |
274 | * if it is decrypted or it is non-encrypted then we use the base code | |
275 | */ | |
276 | if (xi->x_pkey != NULL) { | |
277 | if ((xi->enc_data != NULL) && (xi->enc_len > 0)) { | |
278 | if (enc == NULL) { | |
279 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL); | |
280 | goto err; | |
281 | } | |
8bbf6ac0 | 282 | |
0f113f3e MC |
283 | /* copy from weirdo names into more normal things */ |
284 | iv = xi->enc_cipher.iv; | |
285 | data = (unsigned char *)xi->enc_data; | |
286 | i = xi->enc_len; | |
d02b48c6 | 287 | |
0f113f3e MC |
288 | /* |
289 | * we take the encryption data from the internal stuff rather | |
290 | * than what the user has passed us ... as we have to match | |
291 | * exactly for some strange reason | |
292 | */ | |
293 | objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher)); | |
294 | if (objstr == NULL) { | |
295 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, | |
296 | PEM_R_UNSUPPORTED_CIPHER); | |
297 | goto err; | |
298 | } | |
d02b48c6 | 299 | |
df443918 | 300 | /* Create the right magic header stuff */ |
0f113f3e MC |
301 | buf[0] = '\0'; |
302 | PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); | |
6c2ff56e RL |
303 | PEM_dek_info(buf, objstr, EVP_CIPHER_iv_length(enc), |
304 | (char *)iv); | |
d02b48c6 | 305 | |
0f113f3e MC |
306 | /* use the normal code to write things out */ |
307 | i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i); | |
308 | if (i <= 0) | |
309 | goto err; | |
310 | } else { | |
311 | /* Add DSA/DH */ | |
cf1b7d96 | 312 | #ifndef OPENSSL_NO_RSA |
0f113f3e MC |
313 | /* normal optionally encrypted stuff */ |
314 | if (PEM_write_bio_RSAPrivateKey(bp, | |
3aeb9348 | 315 | EVP_PKEY_get0_RSA(xi->x_pkey->dec_pkey), |
0f113f3e MC |
316 | enc, kstr, klen, cb, u) <= 0) |
317 | goto err; | |
d02b48c6 | 318 | #endif |
0f113f3e MC |
319 | } |
320 | } | |
d02b48c6 | 321 | |
0f113f3e MC |
322 | /* if we have a certificate then write it out now */ |
323 | if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0)) | |
324 | goto err; | |
d02b48c6 | 325 | |
0f113f3e MC |
326 | /* |
327 | * we are ignoring anything else that is loaded into the X509_INFO | |
328 | * structure for the moment ... as I don't need it so I'm not coding it | |
329 | * here and Eric can do it when this makes it into the base library --tjh | |
330 | */ | |
d02b48c6 | 331 | |
0f113f3e | 332 | ret = 1; |
d02b48c6 | 333 | |
0f113f3e | 334 | err: |
0f113f3e | 335 | OPENSSL_cleanse(buf, PEM_BUFSIZE); |
26a7d938 | 336 | return ret; |
0f113f3e | 337 | } |