/src/openssl/crypto/pem/pem_info.c
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1 | | /* |
2 | | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
3 | | * |
4 | | * Licensed under the Apache License 2.0 (the "License"). You may not use |
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 |
8 | | */ |
9 | | |
10 | | /* |
11 | | * DSA low level APIs are deprecated for public use, but still ok for |
12 | | * internal use. |
13 | | */ |
14 | | #include "internal/deprecated.h" |
15 | | |
16 | | #include <stdio.h> |
17 | | #include "internal/cryptlib.h" |
18 | | #include <openssl/buffer.h> |
19 | | #include <openssl/objects.h> |
20 | | #include <openssl/evp.h> |
21 | | #include <openssl/x509.h> |
22 | | #include <openssl/pem.h> |
23 | | #include <openssl/rsa.h> |
24 | | #include <openssl/dsa.h> |
25 | | #include "crypto/evp.h" |
26 | | |
27 | | typedef enum { |
28 | | PEM_INFO_NONE, |
29 | | PEM_INFO_X509, |
30 | | PEM_INFO_X509_AUX, |
31 | | PEM_INFO_X509_CRL, |
32 | | PEM_INFO_PKEY |
33 | | } pem_info_type; |
34 | | |
35 | | #ifndef OPENSSL_NO_STDIO |
36 | | STACK_OF(X509_INFO) |
37 | | *PEM_X509_INFO_read_ex(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, |
38 | | void *u, OSSL_LIB_CTX *libctx, const char *propq) |
39 | 0 | { |
40 | 0 | BIO *b; |
41 | 0 | STACK_OF(X509_INFO) *ret; |
42 | |
|
43 | 0 | if ((b = BIO_new(BIO_s_file())) == NULL) { |
44 | 0 | ERR_raise(ERR_LIB_PEM, ERR_R_BUF_LIB); |
45 | 0 | return 0; |
46 | 0 | } |
47 | 0 | BIO_set_fp(b, fp, BIO_NOCLOSE); |
48 | 0 | ret = PEM_X509_INFO_read_bio_ex(b, sk, cb, u, libctx, propq); |
49 | 0 | BIO_free(b); |
50 | 0 | return ret; |
51 | 0 | } |
52 | | |
53 | | STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, |
54 | | pem_password_cb *cb, void *u) |
55 | 0 | { |
56 | 0 | return PEM_X509_INFO_read_ex(fp, sk, cb, u, NULL, NULL); |
57 | 0 | } |
58 | | #endif |
59 | | |
60 | | STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio_ex(BIO *bp, STACK_OF(X509_INFO) *sk, |
61 | | pem_password_cb *cb, void *u, |
62 | | OSSL_LIB_CTX *libctx, |
63 | | const char *propq) |
64 | 0 | { |
65 | 0 | X509_INFO *xi = NULL; |
66 | 0 | char *name = NULL, *header = NULL, *str; |
67 | 0 | void *pp; |
68 | 0 | unsigned char *data = NULL; |
69 | 0 | const unsigned char *p; |
70 | 0 | long len, error = 0; |
71 | 0 | int ok = 0; |
72 | 0 | STACK_OF(X509_INFO) *ret = NULL; |
73 | 0 | unsigned int i, raw, ptype; |
74 | 0 | pem_info_type itype = PEM_INFO_NONE; |
75 | |
|
76 | 0 | if (sk == NULL) { |
77 | 0 | if ((ret = sk_X509_INFO_new_null()) == NULL) { |
78 | 0 | ERR_raise(ERR_LIB_PEM, ERR_R_CRYPTO_LIB); |
79 | 0 | goto err; |
80 | 0 | } |
81 | 0 | } else |
82 | 0 | ret = sk; |
83 | | |
84 | 0 | if ((xi = X509_INFO_new()) == NULL) |
85 | 0 | goto err; |
86 | 0 | for (;;) { |
87 | 0 | raw = 0; |
88 | 0 | ptype = 0; |
89 | 0 | itype = PEM_INFO_NONE; |
90 | 0 | ERR_set_mark(); |
91 | 0 | i = PEM_read_bio(bp, &name, &header, &data, &len); |
92 | 0 | if (i == 0) { |
93 | 0 | error = ERR_GET_REASON(ERR_peek_last_error()); |
94 | 0 | if (error == PEM_R_NO_START_LINE) { |
95 | 0 | ERR_pop_to_mark(); |
96 | 0 | break; |
97 | 0 | } |
98 | 0 | ERR_clear_last_mark(); |
99 | 0 | goto err; |
100 | 0 | } |
101 | 0 | ERR_clear_last_mark(); |
102 | 0 | start: |
103 | 0 | if (strcmp(name, PEM_STRING_X509) == 0 |
104 | 0 | || strcmp(name, PEM_STRING_X509_OLD) == 0 |
105 | 0 | || strcmp(name, PEM_STRING_X509_TRUSTED) == 0) { |
106 | 0 | if (xi->x509 != NULL) { |
107 | 0 | if (!sk_X509_INFO_push(ret, xi)) |
108 | 0 | goto err; |
109 | 0 | if ((xi = X509_INFO_new()) == NULL) |
110 | 0 | goto err; |
111 | 0 | goto start; |
112 | 0 | } |
113 | 0 | if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) |
114 | 0 | itype = PEM_INFO_X509_AUX; |
115 | 0 | else |
116 | 0 | itype = PEM_INFO_X509; |
117 | 0 | xi->x509 = X509_new_ex(libctx, propq); |
118 | 0 | if (xi->x509 == NULL) |
119 | 0 | goto err; |
120 | 0 | pp = &(xi->x509); |
121 | 0 | } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) { |
122 | 0 | itype = PEM_INFO_X509_CRL; |
123 | 0 | if (xi->crl != NULL) { |
124 | 0 | if (!sk_X509_INFO_push(ret, xi)) |
125 | 0 | goto err; |
126 | 0 | if ((xi = X509_INFO_new()) == NULL) |
127 | 0 | goto err; |
128 | 0 | goto start; |
129 | 0 | } |
130 | 0 | pp = &(xi->crl); |
131 | 0 | } else if ((str = strstr(name, PEM_STRING_PKCS8INF)) != NULL) { |
132 | 0 | if (xi->x_pkey != NULL) { |
133 | 0 | if (!sk_X509_INFO_push(ret, xi)) |
134 | 0 | goto err; |
135 | 0 | if ((xi = X509_INFO_new()) == NULL) |
136 | 0 | goto err; |
137 | 0 | goto start; |
138 | 0 | } |
139 | 0 | if (str == name || strcmp(name, PEM_STRING_PKCS8) == 0) { |
140 | 0 | ptype = EVP_PKEY_NONE; |
141 | 0 | } else { |
142 | | /* chop " PRIVATE KEY" */ |
143 | 0 | *--str = '\0'; |
144 | 0 | ptype = evp_pkey_name2type(name); |
145 | 0 | } |
146 | 0 | xi->enc_data = NULL; |
147 | 0 | xi->enc_len = 0; |
148 | |
|
149 | 0 | itype = PEM_INFO_PKEY; |
150 | 0 | xi->x_pkey = X509_PKEY_new(); |
151 | 0 | if (xi->x_pkey == NULL) |
152 | 0 | goto err; |
153 | 0 | pp = &xi->x_pkey->dec_pkey; |
154 | 0 | if ((int)strlen(header) > 10 /* assume encrypted */ |
155 | 0 | || strcmp(name, PEM_STRING_PKCS8) == 0) |
156 | 0 | raw = 1; |
157 | 0 | } else { /* unknown */ |
158 | 0 | itype = PEM_INFO_NONE; |
159 | 0 | pp = NULL; |
160 | 0 | } |
161 | | |
162 | 0 | if (itype != PEM_INFO_NONE) { |
163 | 0 | if (!raw) { |
164 | 0 | EVP_CIPHER_INFO cipher; |
165 | |
|
166 | 0 | if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) |
167 | 0 | goto err; |
168 | 0 | if (!PEM_do_header(&cipher, data, &len, cb, u)) |
169 | 0 | goto err; |
170 | 0 | p = data; |
171 | 0 | if (ptype) { |
172 | 0 | if (d2i_PrivateKey_ex(ptype, (EVP_PKEY **)pp, &p, len, |
173 | 0 | libctx, propq) |
174 | 0 | == NULL) { |
175 | 0 | ERR_raise(ERR_LIB_PEM, ERR_R_ASN1_LIB); |
176 | 0 | goto err; |
177 | 0 | } |
178 | 0 | } else { |
179 | 0 | void *decoded = NULL; |
180 | |
|
181 | 0 | switch (itype) { |
182 | 0 | case PEM_INFO_X509: |
183 | 0 | decoded = d2i_X509((X509 **)pp, &p, len); |
184 | 0 | break; |
185 | 0 | case PEM_INFO_X509_AUX: |
186 | 0 | decoded = d2i_X509_AUX((X509 **)pp, &p, len); |
187 | 0 | break; |
188 | 0 | case PEM_INFO_X509_CRL: |
189 | 0 | decoded = d2i_X509_CRL((X509_CRL **)pp, &p, len); |
190 | 0 | break; |
191 | 0 | case PEM_INFO_PKEY: |
192 | 0 | decoded = d2i_AutoPrivateKey_ex((EVP_PKEY **)pp, &p, |
193 | 0 | len, libctx, propq); |
194 | 0 | break; |
195 | 0 | default: |
196 | 0 | break; |
197 | 0 | } |
198 | 0 | if (decoded == NULL) { |
199 | 0 | ERR_raise(ERR_LIB_PEM, ERR_R_ASN1_LIB); |
200 | 0 | goto err; |
201 | 0 | } |
202 | 0 | } |
203 | 0 | } else { /* encrypted key data */ |
204 | 0 | if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher)) |
205 | 0 | goto err; |
206 | 0 | xi->enc_data = (char *)data; |
207 | 0 | xi->enc_len = (int)len; |
208 | 0 | data = NULL; |
209 | 0 | } |
210 | 0 | } |
211 | 0 | OPENSSL_free(name); |
212 | 0 | name = NULL; |
213 | 0 | OPENSSL_free(header); |
214 | 0 | header = NULL; |
215 | 0 | OPENSSL_free(data); |
216 | 0 | data = NULL; |
217 | 0 | } |
218 | | |
219 | | /* |
220 | | * if the last one hasn't been pushed yet and there is anything in it |
221 | | * then add it to the stack ... |
222 | | */ |
223 | 0 | if ((xi->x509 != NULL) || (xi->crl != NULL) || (xi->x_pkey != NULL) || (xi->enc_data != NULL)) { |
224 | 0 | if (!sk_X509_INFO_push(ret, xi)) |
225 | 0 | goto err; |
226 | 0 | xi = NULL; |
227 | 0 | } |
228 | 0 | ok = 1; |
229 | 0 | err: |
230 | 0 | X509_INFO_free(xi); |
231 | 0 | if (!ok) { |
232 | 0 | for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) { |
233 | 0 | xi = sk_X509_INFO_value(ret, i); |
234 | 0 | X509_INFO_free(xi); |
235 | 0 | } |
236 | 0 | if (ret != sk) |
237 | 0 | sk_X509_INFO_free(ret); |
238 | 0 | ret = NULL; |
239 | 0 | } |
240 | |
|
241 | 0 | OPENSSL_free(name); |
242 | 0 | OPENSSL_free(header); |
243 | 0 | OPENSSL_free(data); |
244 | 0 | return ret; |
245 | 0 | } |
246 | | |
247 | | STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, |
248 | | pem_password_cb *cb, void *u) |
249 | 0 | { |
250 | 0 | return PEM_X509_INFO_read_bio_ex(bp, sk, cb, u, NULL, NULL); |
251 | 0 | } |
252 | | |
253 | | /* A TJH addition */ |
254 | | int PEM_X509_INFO_write_bio(BIO *bp, const X509_INFO *xi, EVP_CIPHER *enc, |
255 | | const unsigned char *kstr, int klen, |
256 | | pem_password_cb *cb, void *u) |
257 | 0 | { |
258 | 0 | int i, ret = 0; |
259 | 0 | unsigned char *data = NULL; |
260 | 0 | const char *objstr = NULL; |
261 | 0 | char buf[PEM_BUFSIZE]; |
262 | 0 | const unsigned char *iv = NULL; |
263 | |
|
264 | 0 | if (enc != NULL) { |
265 | 0 | objstr = EVP_CIPHER_get0_name(enc); |
266 | 0 | if (objstr == NULL |
267 | | /* |
268 | | * Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n" |
269 | | * fits into buf |
270 | | */ |
271 | 0 | || strlen(objstr) + 23 + 2 * EVP_CIPHER_get_iv_length(enc) + 13 |
272 | 0 | > sizeof(buf)) { |
273 | 0 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER); |
274 | 0 | goto err; |
275 | 0 | } |
276 | 0 | } |
277 | | |
278 | | /* |
279 | | * now for the fun part ... if we have a private key then we have to be |
280 | | * able to handle a not-yet-decrypted key being written out correctly ... |
281 | | * if it is decrypted or it is non-encrypted then we use the base code |
282 | | */ |
283 | 0 | if (xi->x_pkey != NULL) { |
284 | 0 | if ((xi->enc_data != NULL) && (xi->enc_len > 0)) { |
285 | 0 | if (enc == NULL) { |
286 | 0 | ERR_raise(ERR_LIB_PEM, PEM_R_CIPHER_IS_NULL); |
287 | 0 | goto err; |
288 | 0 | } |
289 | | |
290 | | /* copy from weirdo names into more normal things */ |
291 | 0 | iv = xi->enc_cipher.iv; |
292 | 0 | data = (unsigned char *)xi->enc_data; |
293 | 0 | i = xi->enc_len; |
294 | | |
295 | | /* |
296 | | * we take the encryption data from the internal stuff rather |
297 | | * than what the user has passed us ... as we have to match |
298 | | * exactly for some strange reason |
299 | | */ |
300 | 0 | objstr = EVP_CIPHER_get0_name(xi->enc_cipher.cipher); |
301 | 0 | if (objstr == NULL) { |
302 | 0 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER); |
303 | 0 | goto err; |
304 | 0 | } |
305 | | |
306 | | /* Create the right magic header stuff */ |
307 | 0 | buf[0] = '\0'; |
308 | 0 | PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); |
309 | 0 | PEM_dek_info(buf, objstr, EVP_CIPHER_get_iv_length(enc), |
310 | 0 | (const char *)iv); |
311 | | |
312 | | /* use the normal code to write things out */ |
313 | 0 | i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i); |
314 | 0 | if (i <= 0) |
315 | 0 | goto err; |
316 | 0 | } else { |
317 | | /* Add DSA/DH */ |
318 | | /* normal optionally encrypted stuff */ |
319 | 0 | if (PEM_write_bio_RSAPrivateKey(bp, |
320 | 0 | EVP_PKEY_get0_RSA(xi->x_pkey->dec_pkey), |
321 | 0 | enc, kstr, klen, cb, u) |
322 | 0 | <= 0) |
323 | 0 | goto err; |
324 | 0 | } |
325 | 0 | } |
326 | | |
327 | | /* if we have a certificate then write it out now */ |
328 | 0 | if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0)) |
329 | 0 | goto err; |
330 | | |
331 | | /* |
332 | | * we are ignoring anything else that is loaded into the X509_INFO |
333 | | * structure for the moment ... as I don't need it so I'm not coding it |
334 | | * here and Eric can do it when this makes it into the base library --tjh |
335 | | */ |
336 | | |
337 | 0 | ret = 1; |
338 | |
|
339 | 0 | err: |
340 | 0 | OPENSSL_cleanse(buf, PEM_BUFSIZE); |
341 | 0 | return ret; |
342 | 0 | } |