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d02b48c6 | 1 | /* crypto/pem/pem_lib.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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" | |
ec577822 BM |
61 | #include <openssl/buffer.h> |
62 | #include <openssl/objects.h> | |
63 | #include <openssl/evp.h> | |
64 | #include <openssl/rand.h> | |
65 | #include <openssl/x509.h> | |
66 | #include <openssl/pem.h> | |
095ce353 | 67 | #include <openssl/pkcs12.h> |
d02b48c6 | 68 | #ifndef NO_DES |
ec577822 | 69 | #include <openssl/des.h> |
d02b48c6 RE |
70 | #endif |
71 | ||
e778802f | 72 | const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT; |
d02b48c6 RE |
73 | |
74 | #define MIN_LENGTH 4 | |
75 | ||
74678cc2 | 76 | static int def_callback(char *buf, int num, int w, void *userdata); |
d02b48c6 | 77 | static int load_iv(unsigned char **fromp,unsigned char *to, int num); |
ce1b4fe1 | 78 | static int check_pem(const char *nm, const char *name); |
525f51f6 DSH |
79 | static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, |
80 | int nid, const EVP_CIPHER *enc, | |
81 | char *kstr, int klen, | |
82 | pem_password_cb *cb, void *u); | |
83 | static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder, | |
84 | int nid, const EVP_CIPHER *enc, | |
85 | char *kstr, int klen, | |
86 | pem_password_cb *cb, void *u); | |
84757d67 | 87 | |
a3fe382e | 88 | static int def_callback(char *buf, int num, int w, void *key) |
d02b48c6 | 89 | { |
58964a49 | 90 | #ifdef NO_FP_API |
d02b48c6 RE |
91 | /* We should not ever call the default callback routine from |
92 | * windows. */ | |
93 | PEMerr(PEM_F_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
94 | return(-1); | |
95 | #else | |
96 | int i,j; | |
e778802f | 97 | const char *prompt; |
a3fe382e DSH |
98 | if(key) { |
99 | i=strlen(key); | |
100 | i=(i > num)?num:i; | |
101 | memcpy(buf,key,i); | |
102 | return(i); | |
103 | } | |
d02b48c6 RE |
104 | |
105 | prompt=EVP_get_pw_prompt(); | |
106 | if (prompt == NULL) | |
107 | prompt="Enter PEM pass phrase:"; | |
108 | ||
109 | for (;;) | |
110 | { | |
111 | i=EVP_read_pw_string(buf,num,prompt,w); | |
112 | if (i != 0) | |
113 | { | |
114 | PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD); | |
115 | memset(buf,0,(unsigned int)num); | |
116 | return(-1); | |
117 | } | |
118 | j=strlen(buf); | |
119 | if (j < MIN_LENGTH) | |
120 | { | |
121 | fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH); | |
122 | } | |
123 | else | |
124 | break; | |
125 | } | |
126 | return(j); | |
127 | #endif | |
128 | } | |
129 | ||
6b691a5c | 130 | void PEM_proc_type(char *buf, int type) |
d02b48c6 | 131 | { |
e778802f | 132 | const char *str; |
d02b48c6 RE |
133 | |
134 | if (type == PEM_TYPE_ENCRYPTED) | |
135 | str="ENCRYPTED"; | |
136 | else if (type == PEM_TYPE_MIC_CLEAR) | |
137 | str="MIC-CLEAR"; | |
138 | else if (type == PEM_TYPE_MIC_ONLY) | |
139 | str="MIC-ONLY"; | |
140 | else | |
141 | str="BAD-TYPE"; | |
142 | ||
143 | strcat(buf,"Proc-Type: 4,"); | |
144 | strcat(buf,str); | |
145 | strcat(buf,"\n"); | |
146 | } | |
147 | ||
6b691a5c | 148 | void PEM_dek_info(char *buf, const char *type, int len, char *str) |
d02b48c6 RE |
149 | { |
150 | static unsigned char map[17]="0123456789ABCDEF"; | |
151 | long i; | |
152 | int j; | |
153 | ||
154 | strcat(buf,"DEK-Info: "); | |
155 | strcat(buf,type); | |
156 | strcat(buf,","); | |
157 | j=strlen(buf); | |
158 | for (i=0; i<len; i++) | |
159 | { | |
160 | buf[j+i*2] =map[(str[i]>>4)&0x0f]; | |
161 | buf[j+i*2+1]=map[(str[i] )&0x0f]; | |
162 | } | |
163 | buf[j+i*2]='\n'; | |
164 | buf[j+i*2+1]='\0'; | |
165 | } | |
166 | ||
58964a49 | 167 | #ifndef NO_FP_API |
6b691a5c | 168 | char *PEM_ASN1_read(char *(*d2i)(), const char *name, FILE *fp, char **x, |
74678cc2 | 169 | pem_password_cb *cb, void *u) |
d02b48c6 RE |
170 | { |
171 | BIO *b; | |
172 | char *ret; | |
173 | ||
174 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
175 | { | |
176 | PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB); | |
177 | return(0); | |
178 | } | |
179 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
74678cc2 | 180 | ret=PEM_ASN1_read_bio(d2i,name,b,x,cb,u); |
d02b48c6 RE |
181 | BIO_free(b); |
182 | return(ret); | |
183 | } | |
184 | #endif | |
185 | ||
ce1b4fe1 DSH |
186 | static int check_pem(const char *nm, const char *name) |
187 | { | |
188 | /* Normal matching nm and name */ | |
189 | if (!strcmp(nm,name)) return 1; | |
190 | ||
191 | /* Make PEM_STRING_EVP_PKEY match any private key */ | |
192 | ||
193 | if(!strcmp(nm,PEM_STRING_PKCS8) && | |
194 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
195 | ||
196 | if(!strcmp(nm,PEM_STRING_PKCS8INF) && | |
197 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
198 | ||
199 | if(!strcmp(nm,PEM_STRING_RSA) && | |
200 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
201 | ||
202 | if(!strcmp(nm,PEM_STRING_DSA) && | |
203 | !strcmp(name,PEM_STRING_EVP_PKEY)) return 1; | |
204 | ||
205 | /* Permit older strings */ | |
206 | ||
207 | if(!strcmp(nm,PEM_STRING_X509_OLD) && | |
208 | !strcmp(name,PEM_STRING_X509)) return 1; | |
209 | ||
210 | if(!strcmp(nm,PEM_STRING_X509_REQ_OLD) && | |
211 | !strcmp(name,PEM_STRING_X509_REQ)) return 1; | |
212 | ||
213 | /* Allow normal certs to be read as trusted certs */ | |
214 | if(!strcmp(nm,PEM_STRING_X509) && | |
215 | !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1; | |
216 | ||
217 | if(!strcmp(nm,PEM_STRING_X509_OLD) && | |
218 | !strcmp(name,PEM_STRING_X509_TRUSTED)) return 1; | |
219 | ||
3142c86d DSH |
220 | /* Some CAs use PKCS#7 with CERTIFICATE headers */ |
221 | if(!strcmp(nm, PEM_STRING_X509) && | |
222 | !strcmp(name, PEM_STRING_PKCS7)) return 1; | |
223 | ||
ce1b4fe1 DSH |
224 | return 0; |
225 | } | |
226 | ||
6b691a5c | 227 | char *PEM_ASN1_read_bio(char *(*d2i)(), const char *name, BIO *bp, char **x, |
74678cc2 | 228 | pem_password_cb *cb, void *u) |
d02b48c6 RE |
229 | { |
230 | EVP_CIPHER_INFO cipher; | |
231 | char *nm=NULL,*header=NULL; | |
232 | unsigned char *p=NULL,*data=NULL; | |
233 | long len; | |
234 | char *ret=NULL; | |
235 | ||
236 | for (;;) | |
237 | { | |
f769ce3e DSH |
238 | if (!PEM_read_bio(bp,&nm,&header,&data,&len)) { |
239 | if(ERR_GET_REASON(ERR_peek_error()) == | |
240 | PEM_R_NO_START_LINE) | |
241 | ERR_add_error_data(2, "Expecting: ", name); | |
242 | return(NULL); | |
243 | } | |
ce1b4fe1 | 244 | if(check_pem(nm, name)) break; |
26a3a48d RL |
245 | OPENSSL_free(nm); |
246 | OPENSSL_free(header); | |
247 | OPENSSL_free(data); | |
d02b48c6 RE |
248 | } |
249 | if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err; | |
74678cc2 | 250 | if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err; |
d02b48c6 | 251 | p=data; |
095ce353 | 252 | if (strcmp(name,PEM_STRING_EVP_PKEY) == 0) { |
d02b48c6 RE |
253 | if (strcmp(nm,PEM_STRING_RSA) == 0) |
254 | ret=d2i(EVP_PKEY_RSA,x,&p,len); | |
255 | else if (strcmp(nm,PEM_STRING_DSA) == 0) | |
256 | ret=d2i(EVP_PKEY_DSA,x,&p,len); | |
095ce353 DSH |
257 | else if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) { |
258 | PKCS8_PRIV_KEY_INFO *p8inf; | |
259 | p8inf=d2i_PKCS8_PRIV_KEY_INFO( | |
260 | (PKCS8_PRIV_KEY_INFO **) x, &p, len); | |
261 | ret = (char *)EVP_PKCS82PKEY(p8inf); | |
262 | PKCS8_PRIV_KEY_INFO_free(p8inf); | |
263 | } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) { | |
264 | PKCS8_PRIV_KEY_INFO *p8inf; | |
265 | X509_SIG *p8; | |
266 | int klen; | |
267 | char psbuf[PEM_BUFSIZE]; | |
525f51f6 | 268 | p8 = d2i_X509_SIG(NULL, &p, len); |
095ce353 | 269 | if(!p8) goto p8err; |
74678cc2 BM |
270 | if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u); |
271 | else klen=def_callback(psbuf,PEM_BUFSIZE,0,u); | |
095ce353 DSH |
272 | if (klen <= 0) { |
273 | PEMerr(PEM_F_PEM_ASN1_READ_BIO, | |
274 | PEM_R_BAD_PASSWORD_READ); | |
275 | goto err; | |
276 | } | |
277 | p8inf = M_PKCS8_decrypt(p8, psbuf, klen); | |
278 | X509_SIG_free(p8); | |
279 | if(!p8inf) goto p8err; | |
280 | ret = (char *)EVP_PKCS82PKEY(p8inf); | |
525f51f6 DSH |
281 | if(x) { |
282 | if(*x) EVP_PKEY_free((EVP_PKEY *)*x); | |
283 | *x = ret; | |
284 | } | |
095ce353 | 285 | PKCS8_PRIV_KEY_INFO_free(p8inf); |
d02b48c6 | 286 | } |
095ce353 DSH |
287 | } else ret=d2i(x,&p,len); |
288 | p8err: | |
d02b48c6 RE |
289 | if (ret == NULL) |
290 | PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB); | |
291 | err: | |
26a3a48d RL |
292 | OPENSSL_free(nm); |
293 | OPENSSL_free(header); | |
294 | OPENSSL_free(data); | |
d02b48c6 RE |
295 | return(ret); |
296 | } | |
297 | ||
58964a49 | 298 | #ifndef NO_FP_API |
6b691a5c UM |
299 | int PEM_ASN1_write(int (*i2d)(), const char *name, FILE *fp, char *x, |
300 | const EVP_CIPHER *enc, unsigned char *kstr, int klen, | |
74678cc2 | 301 | pem_password_cb *callback, void *u) |
d02b48c6 RE |
302 | { |
303 | BIO *b; | |
304 | int ret; | |
305 | ||
306 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
307 | { | |
308 | PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB); | |
309 | return(0); | |
310 | } | |
311 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
74678cc2 | 312 | ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback,u); |
d02b48c6 RE |
313 | BIO_free(b); |
314 | return(ret); | |
315 | } | |
316 | #endif | |
317 | ||
6b691a5c UM |
318 | int PEM_ASN1_write_bio(int (*i2d)(), const char *name, BIO *bp, char *x, |
319 | const EVP_CIPHER *enc, unsigned char *kstr, int klen, | |
74678cc2 | 320 | pem_password_cb *callback, void *u) |
d02b48c6 RE |
321 | { |
322 | EVP_CIPHER_CTX ctx; | |
323 | int dsize=0,i,j,ret=0; | |
324 | unsigned char *p,*data=NULL; | |
e778802f | 325 | const char *objstr=NULL; |
d02b48c6 RE |
326 | char buf[PEM_BUFSIZE]; |
327 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
328 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
329 | ||
330 | if (enc != NULL) | |
331 | { | |
332 | objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc)); | |
333 | if (objstr == NULL) | |
334 | { | |
335 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); | |
336 | goto err; | |
337 | } | |
338 | } | |
339 | ||
58964a49 RE |
340 | if ((dsize=i2d(x,NULL)) < 0) |
341 | { | |
342 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
343 | dsize=0; | |
344 | goto err; | |
345 | } | |
d02b48c6 | 346 | /* dzise + 8 bytes are needed */ |
26a3a48d | 347 | data=(unsigned char *)OPENSSL_malloc((unsigned int)dsize+20); |
d02b48c6 RE |
348 | if (data == NULL) |
349 | { | |
350 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
351 | goto err; | |
352 | } | |
353 | p=data; | |
354 | i=i2d(x,&p); | |
355 | ||
356 | if (enc != NULL) | |
357 | { | |
358 | if (kstr == NULL) | |
359 | { | |
360 | if (callback == NULL) | |
74678cc2 | 361 | klen=def_callback(buf,PEM_BUFSIZE,1,u); |
d02b48c6 | 362 | else |
74678cc2 | 363 | klen=(*callback)(buf,PEM_BUFSIZE,1,u); |
d02b48c6 RE |
364 | if (klen <= 0) |
365 | { | |
366 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY); | |
367 | goto err; | |
368 | } | |
a53955d8 UM |
369 | #ifdef CHARSET_EBCDIC |
370 | /* Convert the pass phrase from EBCDIC */ | |
371 | ebcdic2ascii(buf, buf, klen); | |
372 | #endif | |
d02b48c6 RE |
373 | kstr=(unsigned char *)buf; |
374 | } | |
eb952088 | 375 | RAND_add(data,i,0);/* put in the RSA key. */ |
d6f68fa3 | 376 | if (RAND_pseudo_bytes(iv,8) < 0) /* Generate a salt */ |
e7f97e2d | 377 | goto err; |
d02b48c6 RE |
378 | /* The 'iv' is used as the iv and as a salt. It is |
379 | * NOT taken from the BytesToKey function */ | |
380 | EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL); | |
381 | ||
382 | if (kstr == (unsigned char *)buf) memset(buf,0,PEM_BUFSIZE); | |
383 | ||
384 | buf[0]='\0'; | |
385 | PEM_proc_type(buf,PEM_TYPE_ENCRYPTED); | |
386 | PEM_dek_info(buf,objstr,8,(char *)iv); | |
387 | /* k=strlen(buf); */ | |
388 | ||
389 | EVP_EncryptInit(&ctx,enc,key,iv); | |
390 | EVP_EncryptUpdate(&ctx,data,&j,data,i); | |
391 | EVP_EncryptFinal(&ctx,&(data[j]),&i); | |
392 | i+=j; | |
393 | ret=1; | |
394 | } | |
395 | else | |
396 | { | |
397 | ret=1; | |
398 | buf[0]='\0'; | |
399 | } | |
400 | i=PEM_write_bio(bp,name,buf,data,i); | |
401 | if (i <= 0) ret=0; | |
402 | err: | |
403 | memset(key,0,sizeof(key)); | |
404 | memset(iv,0,sizeof(iv)); | |
405 | memset((char *)&ctx,0,sizeof(ctx)); | |
406 | memset(buf,0,PEM_BUFSIZE); | |
407 | memset(data,0,(unsigned int)dsize); | |
26a3a48d | 408 | OPENSSL_free(data); |
d02b48c6 RE |
409 | return(ret); |
410 | } | |
411 | ||
6b691a5c | 412 | int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen, |
74678cc2 | 413 | pem_password_cb *callback,void *u) |
d02b48c6 RE |
414 | { |
415 | int i,j,o,klen; | |
416 | long len; | |
417 | EVP_CIPHER_CTX ctx; | |
418 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
419 | char buf[PEM_BUFSIZE]; | |
420 | ||
421 | len= *plen; | |
422 | ||
423 | if (cipher->cipher == NULL) return(1); | |
424 | if (callback == NULL) | |
74678cc2 | 425 | klen=def_callback(buf,PEM_BUFSIZE,0,u); |
d02b48c6 | 426 | else |
74678cc2 | 427 | klen=callback(buf,PEM_BUFSIZE,0,u); |
d02b48c6 RE |
428 | if (klen <= 0) |
429 | { | |
430 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ); | |
431 | return(0); | |
432 | } | |
a53955d8 UM |
433 | #ifdef CHARSET_EBCDIC |
434 | /* Convert the pass phrase from EBCDIC */ | |
435 | ebcdic2ascii(buf, buf, klen); | |
436 | #endif | |
437 | ||
d02b48c6 RE |
438 | EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]), |
439 | (unsigned char *)buf,klen,1,key,NULL); | |
440 | ||
441 | j=(int)len; | |
442 | EVP_DecryptInit(&ctx,cipher->cipher,key,&(cipher->iv[0])); | |
443 | EVP_DecryptUpdate(&ctx,data,&i,data,j); | |
444 | o=EVP_DecryptFinal(&ctx,&(data[i]),&j); | |
445 | EVP_CIPHER_CTX_cleanup(&ctx); | |
446 | memset((char *)buf,0,sizeof(buf)); | |
447 | memset((char *)key,0,sizeof(key)); | |
448 | j+=i; | |
449 | if (!o) | |
450 | { | |
451 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT); | |
452 | return(0); | |
453 | } | |
454 | *plen=j; | |
455 | return(1); | |
456 | } | |
457 | ||
6b691a5c | 458 | int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher) |
d02b48c6 RE |
459 | { |
460 | int o; | |
e778802f | 461 | const EVP_CIPHER *enc=NULL; |
d02b48c6 RE |
462 | char *p,c; |
463 | ||
464 | cipher->cipher=NULL; | |
465 | if ((header == NULL) || (*header == '\0') || (*header == '\n')) | |
466 | return(1); | |
467 | if (strncmp(header,"Proc-Type: ",11) != 0) | |
468 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); } | |
469 | header+=11; | |
470 | if (*header != '4') return(0); header++; | |
471 | if (*header != ',') return(0); header++; | |
472 | if (strncmp(header,"ENCRYPTED",9) != 0) | |
473 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); } | |
474 | for (; (*header != '\n') && (*header != '\0'); header++) | |
475 | ; | |
476 | if (*header == '\0') | |
477 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); } | |
478 | header++; | |
479 | if (strncmp(header,"DEK-Info: ",10) != 0) | |
480 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); } | |
481 | header+=10; | |
482 | ||
483 | p=header; | |
484 | for (;;) | |
485 | { | |
486 | c= *header; | |
a53955d8 | 487 | #ifndef CHARSET_EBCDIC |
d02b48c6 RE |
488 | if (!( ((c >= 'A') && (c <= 'Z')) || (c == '-') || |
489 | ((c >= '0') && (c <= '9')))) | |
490 | break; | |
a53955d8 UM |
491 | #else |
492 | if (!( isupper(c) || (c == '-') || | |
493 | isdigit(c))) | |
494 | break; | |
495 | #endif | |
d02b48c6 RE |
496 | header++; |
497 | } | |
498 | *header='\0'; | |
499 | o=OBJ_sn2nid(p); | |
500 | cipher->cipher=enc=EVP_get_cipherbyname(p); | |
501 | *header=c; | |
502 | header++; | |
503 | ||
504 | if (enc == NULL) | |
505 | { | |
506 | PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION); | |
507 | return(0); | |
508 | } | |
509 | if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),8)) return(0); | |
510 | ||
511 | return(1); | |
512 | } | |
513 | ||
6b691a5c | 514 | static int load_iv(unsigned char **fromp, unsigned char *to, int num) |
d02b48c6 RE |
515 | { |
516 | int v,i; | |
517 | unsigned char *from; | |
518 | ||
519 | from= *fromp; | |
520 | for (i=0; i<num; i++) to[i]=0; | |
521 | num*=2; | |
522 | for (i=0; i<num; i++) | |
523 | { | |
524 | if ((*from >= '0') && (*from <= '9')) | |
525 | v= *from-'0'; | |
526 | else if ((*from >= 'A') && (*from <= 'F')) | |
527 | v= *from-'A'+10; | |
528 | else if ((*from >= 'a') && (*from <= 'f')) | |
529 | v= *from-'a'+10; | |
530 | else | |
531 | { | |
532 | PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS); | |
533 | return(0); | |
534 | } | |
535 | from++; | |
536 | to[i/2]|=v<<(long)((!(i&1))*4); | |
537 | } | |
538 | ||
539 | *fromp=from; | |
540 | return(1); | |
541 | } | |
542 | ||
58964a49 | 543 | #ifndef NO_FP_API |
6b691a5c UM |
544 | int PEM_write(FILE *fp, char *name, char *header, unsigned char *data, |
545 | long len) | |
d02b48c6 RE |
546 | { |
547 | BIO *b; | |
548 | int ret; | |
549 | ||
550 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
551 | { | |
552 | PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB); | |
553 | return(0); | |
554 | } | |
555 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
556 | ret=PEM_write_bio(b, name, header, data,len); | |
557 | BIO_free(b); | |
558 | return(ret); | |
559 | } | |
560 | #endif | |
561 | ||
6b691a5c UM |
562 | int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data, |
563 | long len) | |
d02b48c6 RE |
564 | { |
565 | int nlen,n,i,j,outl; | |
566 | unsigned char *buf; | |
567 | EVP_ENCODE_CTX ctx; | |
568 | int reason=ERR_R_BUF_LIB; | |
569 | ||
570 | EVP_EncodeInit(&ctx); | |
571 | nlen=strlen(name); | |
572 | ||
573 | if ( (BIO_write(bp,"-----BEGIN ",11) != 11) || | |
574 | (BIO_write(bp,name,nlen) != nlen) || | |
575 | (BIO_write(bp,"-----\n",6) != 6)) | |
576 | goto err; | |
577 | ||
578 | i=strlen(header); | |
579 | if (i > 0) | |
580 | { | |
581 | if ( (BIO_write(bp,header,i) != i) || | |
582 | (BIO_write(bp,"\n",1) != 1)) | |
583 | goto err; | |
584 | } | |
585 | ||
26a3a48d | 586 | buf=(unsigned char *)OPENSSL_malloc(PEM_BUFSIZE*8); |
d02b48c6 RE |
587 | if (buf == NULL) |
588 | { | |
589 | reason=ERR_R_MALLOC_FAILURE; | |
590 | goto err; | |
591 | } | |
592 | ||
593 | i=j=0; | |
594 | while (len > 0) | |
595 | { | |
596 | n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len); | |
597 | EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n); | |
598 | if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl)) | |
599 | goto err; | |
600 | i+=outl; | |
601 | len-=n; | |
602 | j+=n; | |
603 | } | |
604 | EVP_EncodeFinal(&ctx,buf,&outl); | |
605 | if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err; | |
26a3a48d | 606 | OPENSSL_free(buf); |
d02b48c6 RE |
607 | if ( (BIO_write(bp,"-----END ",9) != 9) || |
608 | (BIO_write(bp,name,nlen) != nlen) || | |
609 | (BIO_write(bp,"-----\n",6) != 6)) | |
610 | goto err; | |
611 | return(i+outl); | |
612 | err: | |
613 | PEMerr(PEM_F_PEM_WRITE_BIO,reason); | |
614 | return(0); | |
615 | } | |
616 | ||
58964a49 | 617 | #ifndef NO_FP_API |
6b691a5c UM |
618 | int PEM_read(FILE *fp, char **name, char **header, unsigned char **data, |
619 | long *len) | |
d02b48c6 RE |
620 | { |
621 | BIO *b; | |
622 | int ret; | |
623 | ||
624 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
625 | { | |
626 | PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB); | |
627 | return(0); | |
628 | } | |
629 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
630 | ret=PEM_read_bio(b, name, header, data,len); | |
631 | BIO_free(b); | |
632 | return(ret); | |
633 | } | |
634 | #endif | |
635 | ||
6b691a5c UM |
636 | int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data, |
637 | long *len) | |
d02b48c6 RE |
638 | { |
639 | EVP_ENCODE_CTX ctx; | |
640 | int end=0,i,k,bl=0,hl=0,nohead=0; | |
641 | char buf[256]; | |
642 | BUF_MEM *nameB; | |
643 | BUF_MEM *headerB; | |
644 | BUF_MEM *dataB,*tmpB; | |
645 | ||
646 | nameB=BUF_MEM_new(); | |
647 | headerB=BUF_MEM_new(); | |
648 | dataB=BUF_MEM_new(); | |
649 | if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) | |
650 | { | |
651 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
652 | return(0); | |
653 | } | |
654 | ||
655 | buf[254]='\0'; | |
656 | for (;;) | |
657 | { | |
658 | i=BIO_gets(bp,buf,254); | |
659 | ||
660 | if (i <= 0) | |
661 | { | |
662 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE); | |
663 | goto err; | |
664 | } | |
665 | ||
666 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
667 | buf[++i]='\n'; buf[++i]='\0'; | |
668 | ||
669 | if (strncmp(buf,"-----BEGIN ",11) == 0) | |
670 | { | |
671 | i=strlen(&(buf[11])); | |
672 | ||
673 | if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0) | |
674 | continue; | |
675 | if (!BUF_MEM_grow(nameB,i+9)) | |
676 | { | |
677 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
678 | goto err; | |
679 | } | |
61f5b6f3 | 680 | memcpy(nameB->data,&(buf[11]),i-6); |
d02b48c6 RE |
681 | nameB->data[i-6]='\0'; |
682 | break; | |
683 | } | |
684 | } | |
685 | hl=0; | |
686 | if (!BUF_MEM_grow(headerB,256)) | |
687 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
688 | headerB->data[0]='\0'; | |
689 | for (;;) | |
690 | { | |
691 | i=BIO_gets(bp,buf,254); | |
692 | if (i <= 0) break; | |
693 | ||
694 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
695 | buf[++i]='\n'; buf[++i]='\0'; | |
696 | ||
697 | if (buf[0] == '\n') break; | |
698 | if (!BUF_MEM_grow(headerB,hl+i+9)) | |
699 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
700 | if (strncmp(buf,"-----END ",9) == 0) | |
701 | { | |
702 | nohead=1; | |
703 | break; | |
704 | } | |
61f5b6f3 | 705 | memcpy(&(headerB->data[hl]),buf,i); |
d02b48c6 RE |
706 | headerB->data[hl+i]='\0'; |
707 | hl+=i; | |
708 | } | |
709 | ||
710 | bl=0; | |
711 | if (!BUF_MEM_grow(dataB,1024)) | |
712 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
713 | dataB->data[0]='\0'; | |
714 | if (!nohead) | |
715 | { | |
716 | for (;;) | |
717 | { | |
718 | i=BIO_gets(bp,buf,254); | |
719 | if (i <= 0) break; | |
720 | ||
721 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
722 | buf[++i]='\n'; buf[++i]='\0'; | |
723 | ||
724 | if (i != 65) end=1; | |
725 | if (strncmp(buf,"-----END ",9) == 0) | |
726 | break; | |
727 | if (i > 65) break; | |
728 | if (!BUF_MEM_grow(dataB,i+bl+9)) | |
729 | { | |
730 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
731 | goto err; | |
732 | } | |
61f5b6f3 | 733 | memcpy(&(dataB->data[bl]),buf,i); |
d02b48c6 RE |
734 | dataB->data[bl+i]='\0'; |
735 | bl+=i; | |
736 | if (end) | |
737 | { | |
738 | buf[0]='\0'; | |
739 | i=BIO_gets(bp,buf,254); | |
740 | if (i <= 0) break; | |
741 | ||
742 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
743 | buf[++i]='\n'; buf[++i]='\0'; | |
744 | ||
745 | break; | |
746 | } | |
747 | } | |
748 | } | |
749 | else | |
750 | { | |
751 | tmpB=headerB; | |
752 | headerB=dataB; | |
753 | dataB=tmpB; | |
754 | bl=hl; | |
755 | } | |
756 | i=strlen(nameB->data); | |
757 | if ( (strncmp(buf,"-----END ",9) != 0) || | |
61f5b6f3 | 758 | (strncmp(nameB->data,&(buf[9]),i) != 0) || |
d02b48c6 RE |
759 | (strncmp(&(buf[9+i]),"-----\n",6) != 0)) |
760 | { | |
761 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE); | |
762 | goto err; | |
763 | } | |
764 | ||
765 | EVP_DecodeInit(&ctx); | |
766 | i=EVP_DecodeUpdate(&ctx, | |
767 | (unsigned char *)dataB->data,&bl, | |
768 | (unsigned char *)dataB->data,bl); | |
769 | if (i < 0) | |
770 | { | |
771 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
772 | goto err; | |
773 | } | |
774 | i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k); | |
775 | if (i < 0) | |
776 | { | |
777 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
778 | goto err; | |
779 | } | |
780 | bl+=k; | |
781 | ||
782 | if (bl == 0) goto err; | |
783 | *name=nameB->data; | |
784 | *header=headerB->data; | |
785 | *data=(unsigned char *)dataB->data; | |
786 | *len=bl; | |
26a3a48d RL |
787 | OPENSSL_free(nameB); |
788 | OPENSSL_free(headerB); | |
789 | OPENSSL_free(dataB); | |
d02b48c6 RE |
790 | return(1); |
791 | err: | |
792 | BUF_MEM_free(nameB); | |
793 | BUF_MEM_free(headerB); | |
794 | BUF_MEM_free(dataB); | |
795 | return(0); | |
796 | } | |
b7d135b3 | 797 | |
525f51f6 DSH |
798 | /* These functions write a private key in PKCS#8 format: it is a "drop in" |
799 | * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc' | |
800 | * is NULL then it uses the unencrypted private key form. The 'nid' versions | |
801 | * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0. | |
b7d135b3 DSH |
802 | */ |
803 | ||
525f51f6 DSH |
804 | int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, |
805 | char *kstr, int klen, | |
806 | pem_password_cb *cb, void *u) | |
807 | { | |
808 | return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u); | |
809 | } | |
810 | ||
b7d135b3 | 811 | int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, |
84757d67 | 812 | char *kstr, int klen, |
74678cc2 | 813 | pem_password_cb *cb, void *u) |
525f51f6 DSH |
814 | { |
815 | return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u); | |
816 | } | |
817 | ||
818 | int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, | |
819 | char *kstr, int klen, | |
820 | pem_password_cb *cb, void *u) | |
821 | { | |
822 | return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u); | |
823 | } | |
824 | ||
825 | int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, | |
826 | char *kstr, int klen, | |
827 | pem_password_cb *cb, void *u) | |
828 | { | |
829 | return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u); | |
830 | } | |
831 | ||
832 | static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc, | |
833 | char *kstr, int klen, | |
834 | pem_password_cb *cb, void *u) | |
b7d135b3 DSH |
835 | { |
836 | X509_SIG *p8; | |
837 | PKCS8_PRIV_KEY_INFO *p8inf; | |
838 | char buf[PEM_BUFSIZE]; | |
839 | int ret; | |
840 | if(!(p8inf = EVP_PKEY2PKCS8(x))) { | |
841 | PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY, | |
842 | PEM_R_ERROR_CONVERTING_PRIVATE_KEY); | |
843 | return 0; | |
844 | } | |
525f51f6 | 845 | if(enc || (nid != -1)) { |
b7d135b3 | 846 | if(!kstr) { |
74678cc2 BM |
847 | if(!cb) klen = def_callback(buf, PEM_BUFSIZE, 1, u); |
848 | else klen = cb(buf, PEM_BUFSIZE, 1, u); | |
b7d135b3 DSH |
849 | if(klen <= 0) { |
850 | PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY, | |
851 | PEM_R_READ_KEY); | |
852 | PKCS8_PRIV_KEY_INFO_free(p8inf); | |
853 | return 0; | |
854 | } | |
855 | ||
856 | kstr = buf; | |
857 | } | |
525f51f6 | 858 | p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf); |
84757d67 | 859 | if(kstr == buf) memset(buf, 0, klen); |
b7d135b3 | 860 | PKCS8_PRIV_KEY_INFO_free(p8inf); |
525f51f6 DSH |
861 | if(isder) ret = i2d_PKCS8_bio(bp, p8); |
862 | else ret = PEM_write_bio_PKCS8(bp, p8); | |
b7d135b3 DSH |
863 | X509_SIG_free(p8); |
864 | return ret; | |
865 | } else { | |
525f51f6 DSH |
866 | if(isder) ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf); |
867 | else ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf); | |
b7d135b3 DSH |
868 | PKCS8_PRIV_KEY_INFO_free(p8inf); |
869 | return ret; | |
870 | } | |
871 | } | |
525f51f6 DSH |
872 | |
873 | /* Finally the DER version to read PKCS#8 encrypted private keys. It has to be | |
874 | * here to access the default callback. | |
875 | */ | |
876 | ||
877 | EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u) | |
878 | { | |
879 | PKCS8_PRIV_KEY_INFO *p8inf = NULL; | |
880 | X509_SIG *p8 = NULL; | |
881 | int klen; | |
882 | EVP_PKEY *ret; | |
883 | char psbuf[PEM_BUFSIZE]; | |
884 | p8 = d2i_PKCS8_bio(bp, NULL); | |
885 | if(!p8) return NULL; | |
886 | if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u); | |
887 | else klen=def_callback(psbuf,PEM_BUFSIZE,0,u); | |
888 | if (klen <= 0) { | |
889 | PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ); | |
890 | X509_SIG_free(p8); | |
891 | return NULL; | |
892 | } | |
893 | p8inf = M_PKCS8_decrypt(p8, psbuf, klen); | |
894 | X509_SIG_free(p8); | |
895 | if(!p8inf) return NULL; | |
896 | ret = EVP_PKCS82PKEY(p8inf); | |
897 | PKCS8_PRIV_KEY_INFO_free(p8inf); | |
898 | if(!ret) return NULL; | |
899 | if(x) { | |
900 | if(*x) EVP_PKEY_free(*x); | |
901 | *x = ret; | |
902 | } | |
903 | return ret; | |
904 | } | |
905 | ||
53b1899e | 906 | #ifndef NO_FP_API |
525f51f6 DSH |
907 | |
908 | int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, | |
909 | char *kstr, int klen, | |
910 | pem_password_cb *cb, void *u) | |
911 | { | |
912 | return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u); | |
913 | } | |
914 | ||
915 | int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, | |
916 | char *kstr, int klen, | |
917 | pem_password_cb *cb, void *u) | |
918 | { | |
919 | return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u); | |
920 | } | |
921 | ||
922 | int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, | |
923 | char *kstr, int klen, | |
924 | pem_password_cb *cb, void *u) | |
925 | { | |
926 | return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u); | |
927 | } | |
928 | ||
b7d135b3 | 929 | int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, |
74678cc2 | 930 | char *kstr, int klen, pem_password_cb *cb, void *u) |
525f51f6 DSH |
931 | { |
932 | return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u); | |
933 | } | |
934 | ||
935 | static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc, | |
936 | char *kstr, int klen, | |
937 | pem_password_cb *cb, void *u) | |
b7d135b3 DSH |
938 | { |
939 | BIO *bp; | |
940 | int ret; | |
941 | if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { | |
525f51f6 | 942 | PEMerr(PEM_F_PEM_F_DO_PK8KEY_FP,ERR_R_BUF_LIB); |
b7d135b3 DSH |
943 | return(0); |
944 | } | |
525f51f6 | 945 | ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u); |
b7d135b3 DSH |
946 | BIO_free(bp); |
947 | return ret; | |
948 | } | |
525f51f6 DSH |
949 | |
950 | EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u) | |
951 | { | |
952 | BIO *bp; | |
953 | EVP_PKEY *ret; | |
954 | if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) { | |
955 | PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP,ERR_R_BUF_LIB); | |
956 | return NULL; | |
957 | } | |
958 | ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u); | |
959 | BIO_free(bp); | |
960 | return ret; | |
961 | } | |
962 | ||
53b1899e | 963 | #endif |