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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" | |
61 | #include "buffer.h" | |
62 | #include "objects.h" | |
63 | #include "evp.h" | |
64 | #include "rand.h" | |
65 | #include "x509.h" | |
66 | #include "pem.h" | |
67 | #ifndef NO_DES | |
68 | #include "des.h" | |
69 | #endif | |
70 | ||
e778802f | 71 | const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT; |
d02b48c6 RE |
72 | |
73 | #define MIN_LENGTH 4 | |
74 | ||
75 | /* PEMerr(PEM_F_PEM_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
76 | * PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
77 | */ | |
78 | ||
79 | #ifndef NOPROTO | |
80 | static int def_callback(char *buf, int num, int w); | |
81 | static int load_iv(unsigned char **fromp,unsigned char *to, int num); | |
82 | #else | |
83 | static int def_callback(); | |
84 | static int load_iv(); | |
85 | #endif | |
86 | ||
6b691a5c | 87 | static int def_callback(char *buf, int num, int w) |
d02b48c6 | 88 | { |
58964a49 | 89 | #ifdef NO_FP_API |
d02b48c6 RE |
90 | /* We should not ever call the default callback routine from |
91 | * windows. */ | |
92 | PEMerr(PEM_F_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
93 | return(-1); | |
94 | #else | |
95 | int i,j; | |
e778802f | 96 | const char *prompt; |
d02b48c6 RE |
97 | |
98 | prompt=EVP_get_pw_prompt(); | |
99 | if (prompt == NULL) | |
100 | prompt="Enter PEM pass phrase:"; | |
101 | ||
102 | for (;;) | |
103 | { | |
104 | i=EVP_read_pw_string(buf,num,prompt,w); | |
105 | if (i != 0) | |
106 | { | |
107 | PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD); | |
108 | memset(buf,0,(unsigned int)num); | |
109 | return(-1); | |
110 | } | |
111 | j=strlen(buf); | |
112 | if (j < MIN_LENGTH) | |
113 | { | |
114 | fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH); | |
115 | } | |
116 | else | |
117 | break; | |
118 | } | |
119 | return(j); | |
120 | #endif | |
121 | } | |
122 | ||
6b691a5c | 123 | void PEM_proc_type(char *buf, int type) |
d02b48c6 | 124 | { |
e778802f | 125 | const char *str; |
d02b48c6 RE |
126 | |
127 | if (type == PEM_TYPE_ENCRYPTED) | |
128 | str="ENCRYPTED"; | |
129 | else if (type == PEM_TYPE_MIC_CLEAR) | |
130 | str="MIC-CLEAR"; | |
131 | else if (type == PEM_TYPE_MIC_ONLY) | |
132 | str="MIC-ONLY"; | |
133 | else | |
134 | str="BAD-TYPE"; | |
135 | ||
136 | strcat(buf,"Proc-Type: 4,"); | |
137 | strcat(buf,str); | |
138 | strcat(buf,"\n"); | |
139 | } | |
140 | ||
6b691a5c | 141 | void PEM_dek_info(char *buf, const char *type, int len, char *str) |
d02b48c6 RE |
142 | { |
143 | static unsigned char map[17]="0123456789ABCDEF"; | |
144 | long i; | |
145 | int j; | |
146 | ||
147 | strcat(buf,"DEK-Info: "); | |
148 | strcat(buf,type); | |
149 | strcat(buf,","); | |
150 | j=strlen(buf); | |
151 | for (i=0; i<len; i++) | |
152 | { | |
153 | buf[j+i*2] =map[(str[i]>>4)&0x0f]; | |
154 | buf[j+i*2+1]=map[(str[i] )&0x0f]; | |
155 | } | |
156 | buf[j+i*2]='\n'; | |
157 | buf[j+i*2+1]='\0'; | |
158 | } | |
159 | ||
58964a49 | 160 | #ifndef NO_FP_API |
6b691a5c UM |
161 | char *PEM_ASN1_read(char *(*d2i)(), const char *name, FILE *fp, char **x, |
162 | int (*cb)()) | |
d02b48c6 RE |
163 | { |
164 | BIO *b; | |
165 | char *ret; | |
166 | ||
167 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
168 | { | |
169 | PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB); | |
170 | return(0); | |
171 | } | |
172 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
173 | ret=PEM_ASN1_read_bio(d2i,name,b,x,cb); | |
174 | BIO_free(b); | |
175 | return(ret); | |
176 | } | |
177 | #endif | |
178 | ||
6b691a5c UM |
179 | char *PEM_ASN1_read_bio(char *(*d2i)(), const char *name, BIO *bp, char **x, |
180 | int (*cb)()) | |
d02b48c6 RE |
181 | { |
182 | EVP_CIPHER_INFO cipher; | |
183 | char *nm=NULL,*header=NULL; | |
184 | unsigned char *p=NULL,*data=NULL; | |
185 | long len; | |
186 | char *ret=NULL; | |
187 | ||
188 | for (;;) | |
189 | { | |
190 | if (!PEM_read_bio(bp,&nm,&header,&data,&len)) return(NULL); | |
191 | if ( (strcmp(nm,name) == 0) || | |
192 | ((strcmp(nm,PEM_STRING_RSA) == 0) && | |
193 | (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) || | |
194 | ((strcmp(nm,PEM_STRING_DSA) == 0) && | |
195 | (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) || | |
196 | ((strcmp(nm,PEM_STRING_X509_OLD) == 0) && | |
197 | (strcmp(name,PEM_STRING_X509) == 0)) || | |
198 | ((strcmp(nm,PEM_STRING_X509_REQ_OLD) == 0) && | |
199 | (strcmp(name,PEM_STRING_X509_REQ) == 0)) | |
200 | ) | |
201 | break; | |
202 | Free(nm); | |
203 | Free(header); | |
204 | Free(data); | |
205 | } | |
206 | if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err; | |
207 | if (!PEM_do_header(&cipher,data,&len,cb)) goto err; | |
208 | p=data; | |
209 | if (strcmp(name,PEM_STRING_EVP_PKEY) == 0) | |
210 | { | |
211 | if (strcmp(nm,PEM_STRING_RSA) == 0) | |
212 | ret=d2i(EVP_PKEY_RSA,x,&p,len); | |
213 | else if (strcmp(nm,PEM_STRING_DSA) == 0) | |
214 | ret=d2i(EVP_PKEY_DSA,x,&p,len); | |
215 | } | |
216 | else | |
217 | ret=d2i(x,&p,len); | |
218 | if (ret == NULL) | |
219 | PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB); | |
220 | err: | |
221 | Free(nm); | |
222 | Free(header); | |
223 | Free(data); | |
224 | return(ret); | |
225 | } | |
226 | ||
58964a49 | 227 | #ifndef NO_FP_API |
6b691a5c UM |
228 | int PEM_ASN1_write(int (*i2d)(), const char *name, FILE *fp, char *x, |
229 | const EVP_CIPHER *enc, unsigned char *kstr, int klen, | |
230 | int (*callback)()) | |
d02b48c6 RE |
231 | { |
232 | BIO *b; | |
233 | int ret; | |
234 | ||
235 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
236 | { | |
237 | PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB); | |
238 | return(0); | |
239 | } | |
240 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
241 | ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback); | |
242 | BIO_free(b); | |
243 | return(ret); | |
244 | } | |
245 | #endif | |
246 | ||
6b691a5c UM |
247 | int PEM_ASN1_write_bio(int (*i2d)(), const char *name, BIO *bp, char *x, |
248 | const EVP_CIPHER *enc, unsigned char *kstr, int klen, | |
249 | int (*callback)()) | |
d02b48c6 RE |
250 | { |
251 | EVP_CIPHER_CTX ctx; | |
252 | int dsize=0,i,j,ret=0; | |
253 | unsigned char *p,*data=NULL; | |
e778802f | 254 | const char *objstr=NULL; |
d02b48c6 RE |
255 | #define PEM_BUFSIZE 1024 |
256 | char buf[PEM_BUFSIZE]; | |
257 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
258 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
259 | ||
260 | if (enc != NULL) | |
261 | { | |
262 | objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc)); | |
263 | if (objstr == NULL) | |
264 | { | |
265 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); | |
266 | goto err; | |
267 | } | |
268 | } | |
269 | ||
58964a49 RE |
270 | if ((dsize=i2d(x,NULL)) < 0) |
271 | { | |
272 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
273 | dsize=0; | |
274 | goto err; | |
275 | } | |
d02b48c6 RE |
276 | /* dzise + 8 bytes are needed */ |
277 | data=(unsigned char *)Malloc((unsigned int)dsize+20); | |
278 | if (data == NULL) | |
279 | { | |
280 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE); | |
281 | goto err; | |
282 | } | |
283 | p=data; | |
284 | i=i2d(x,&p); | |
285 | ||
286 | if (enc != NULL) | |
287 | { | |
288 | if (kstr == NULL) | |
289 | { | |
290 | if (callback == NULL) | |
291 | klen=def_callback(buf,PEM_BUFSIZE,1); | |
292 | else | |
293 | klen=(*callback)(buf,PEM_BUFSIZE,1); | |
294 | if (klen <= 0) | |
295 | { | |
296 | PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY); | |
297 | goto err; | |
298 | } | |
299 | kstr=(unsigned char *)buf; | |
300 | } | |
301 | RAND_seed(data,i);/* put in the RSA key. */ | |
302 | RAND_bytes(iv,8); /* Generate a salt */ | |
303 | /* The 'iv' is used as the iv and as a salt. It is | |
304 | * NOT taken from the BytesToKey function */ | |
305 | EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL); | |
306 | ||
307 | if (kstr == (unsigned char *)buf) memset(buf,0,PEM_BUFSIZE); | |
308 | ||
309 | buf[0]='\0'; | |
310 | PEM_proc_type(buf,PEM_TYPE_ENCRYPTED); | |
311 | PEM_dek_info(buf,objstr,8,(char *)iv); | |
312 | /* k=strlen(buf); */ | |
313 | ||
314 | EVP_EncryptInit(&ctx,enc,key,iv); | |
315 | EVP_EncryptUpdate(&ctx,data,&j,data,i); | |
316 | EVP_EncryptFinal(&ctx,&(data[j]),&i); | |
317 | i+=j; | |
318 | ret=1; | |
319 | } | |
320 | else | |
321 | { | |
322 | ret=1; | |
323 | buf[0]='\0'; | |
324 | } | |
325 | i=PEM_write_bio(bp,name,buf,data,i); | |
326 | if (i <= 0) ret=0; | |
327 | err: | |
328 | memset(key,0,sizeof(key)); | |
329 | memset(iv,0,sizeof(iv)); | |
330 | memset((char *)&ctx,0,sizeof(ctx)); | |
331 | memset(buf,0,PEM_BUFSIZE); | |
332 | memset(data,0,(unsigned int)dsize); | |
333 | Free(data); | |
334 | return(ret); | |
335 | } | |
336 | ||
6b691a5c UM |
337 | int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen, |
338 | int (*callback)()) | |
d02b48c6 RE |
339 | { |
340 | int i,j,o,klen; | |
341 | long len; | |
342 | EVP_CIPHER_CTX ctx; | |
343 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
344 | char buf[PEM_BUFSIZE]; | |
345 | ||
346 | len= *plen; | |
347 | ||
348 | if (cipher->cipher == NULL) return(1); | |
349 | if (callback == NULL) | |
350 | klen=def_callback(buf,PEM_BUFSIZE,0); | |
351 | else | |
352 | klen=callback(buf,PEM_BUFSIZE,0); | |
353 | if (klen <= 0) | |
354 | { | |
355 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ); | |
356 | return(0); | |
357 | } | |
358 | EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]), | |
359 | (unsigned char *)buf,klen,1,key,NULL); | |
360 | ||
361 | j=(int)len; | |
362 | EVP_DecryptInit(&ctx,cipher->cipher,key,&(cipher->iv[0])); | |
363 | EVP_DecryptUpdate(&ctx,data,&i,data,j); | |
364 | o=EVP_DecryptFinal(&ctx,&(data[i]),&j); | |
365 | EVP_CIPHER_CTX_cleanup(&ctx); | |
366 | memset((char *)buf,0,sizeof(buf)); | |
367 | memset((char *)key,0,sizeof(key)); | |
368 | j+=i; | |
369 | if (!o) | |
370 | { | |
371 | PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT); | |
372 | return(0); | |
373 | } | |
374 | *plen=j; | |
375 | return(1); | |
376 | } | |
377 | ||
6b691a5c | 378 | int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher) |
d02b48c6 RE |
379 | { |
380 | int o; | |
e778802f | 381 | const EVP_CIPHER *enc=NULL; |
d02b48c6 RE |
382 | char *p,c; |
383 | ||
384 | cipher->cipher=NULL; | |
385 | if ((header == NULL) || (*header == '\0') || (*header == '\n')) | |
386 | return(1); | |
387 | if (strncmp(header,"Proc-Type: ",11) != 0) | |
388 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); } | |
389 | header+=11; | |
390 | if (*header != '4') return(0); header++; | |
391 | if (*header != ',') return(0); header++; | |
392 | if (strncmp(header,"ENCRYPTED",9) != 0) | |
393 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); } | |
394 | for (; (*header != '\n') && (*header != '\0'); header++) | |
395 | ; | |
396 | if (*header == '\0') | |
397 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); } | |
398 | header++; | |
399 | if (strncmp(header,"DEK-Info: ",10) != 0) | |
400 | { PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); } | |
401 | header+=10; | |
402 | ||
403 | p=header; | |
404 | for (;;) | |
405 | { | |
406 | c= *header; | |
407 | if (!( ((c >= 'A') && (c <= 'Z')) || (c == '-') || | |
408 | ((c >= '0') && (c <= '9')))) | |
409 | break; | |
410 | header++; | |
411 | } | |
412 | *header='\0'; | |
413 | o=OBJ_sn2nid(p); | |
414 | cipher->cipher=enc=EVP_get_cipherbyname(p); | |
415 | *header=c; | |
416 | header++; | |
417 | ||
418 | if (enc == NULL) | |
419 | { | |
420 | PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION); | |
421 | return(0); | |
422 | } | |
423 | if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),8)) return(0); | |
424 | ||
425 | return(1); | |
426 | } | |
427 | ||
6b691a5c | 428 | static int load_iv(unsigned char **fromp, unsigned char *to, int num) |
d02b48c6 RE |
429 | { |
430 | int v,i; | |
431 | unsigned char *from; | |
432 | ||
433 | from= *fromp; | |
434 | for (i=0; i<num; i++) to[i]=0; | |
435 | num*=2; | |
436 | for (i=0; i<num; i++) | |
437 | { | |
438 | if ((*from >= '0') && (*from <= '9')) | |
439 | v= *from-'0'; | |
440 | else if ((*from >= 'A') && (*from <= 'F')) | |
441 | v= *from-'A'+10; | |
442 | else if ((*from >= 'a') && (*from <= 'f')) | |
443 | v= *from-'a'+10; | |
444 | else | |
445 | { | |
446 | PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS); | |
447 | return(0); | |
448 | } | |
449 | from++; | |
450 | to[i/2]|=v<<(long)((!(i&1))*4); | |
451 | } | |
452 | ||
453 | *fromp=from; | |
454 | return(1); | |
455 | } | |
456 | ||
58964a49 | 457 | #ifndef NO_FP_API |
6b691a5c UM |
458 | int PEM_write(FILE *fp, char *name, char *header, unsigned char *data, |
459 | long len) | |
d02b48c6 RE |
460 | { |
461 | BIO *b; | |
462 | int ret; | |
463 | ||
464 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
465 | { | |
466 | PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB); | |
467 | return(0); | |
468 | } | |
469 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
470 | ret=PEM_write_bio(b, name, header, data,len); | |
471 | BIO_free(b); | |
472 | return(ret); | |
473 | } | |
474 | #endif | |
475 | ||
6b691a5c UM |
476 | int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data, |
477 | long len) | |
d02b48c6 RE |
478 | { |
479 | int nlen,n,i,j,outl; | |
480 | unsigned char *buf; | |
481 | EVP_ENCODE_CTX ctx; | |
482 | int reason=ERR_R_BUF_LIB; | |
483 | ||
484 | EVP_EncodeInit(&ctx); | |
485 | nlen=strlen(name); | |
486 | ||
487 | if ( (BIO_write(bp,"-----BEGIN ",11) != 11) || | |
488 | (BIO_write(bp,name,nlen) != nlen) || | |
489 | (BIO_write(bp,"-----\n",6) != 6)) | |
490 | goto err; | |
491 | ||
492 | i=strlen(header); | |
493 | if (i > 0) | |
494 | { | |
495 | if ( (BIO_write(bp,header,i) != i) || | |
496 | (BIO_write(bp,"\n",1) != 1)) | |
497 | goto err; | |
498 | } | |
499 | ||
500 | buf=(unsigned char *)Malloc(PEM_BUFSIZE*8); | |
501 | if (buf == NULL) | |
502 | { | |
503 | reason=ERR_R_MALLOC_FAILURE; | |
504 | goto err; | |
505 | } | |
506 | ||
507 | i=j=0; | |
508 | while (len > 0) | |
509 | { | |
510 | n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len); | |
511 | EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n); | |
512 | if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl)) | |
513 | goto err; | |
514 | i+=outl; | |
515 | len-=n; | |
516 | j+=n; | |
517 | } | |
518 | EVP_EncodeFinal(&ctx,buf,&outl); | |
519 | if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err; | |
520 | Free(buf); | |
521 | if ( (BIO_write(bp,"-----END ",9) != 9) || | |
522 | (BIO_write(bp,name,nlen) != nlen) || | |
523 | (BIO_write(bp,"-----\n",6) != 6)) | |
524 | goto err; | |
525 | return(i+outl); | |
526 | err: | |
527 | PEMerr(PEM_F_PEM_WRITE_BIO,reason); | |
528 | return(0); | |
529 | } | |
530 | ||
58964a49 | 531 | #ifndef NO_FP_API |
6b691a5c UM |
532 | int PEM_read(FILE *fp, char **name, char **header, unsigned char **data, |
533 | long *len) | |
d02b48c6 RE |
534 | { |
535 | BIO *b; | |
536 | int ret; | |
537 | ||
538 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
539 | { | |
540 | PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB); | |
541 | return(0); | |
542 | } | |
543 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
544 | ret=PEM_read_bio(b, name, header, data,len); | |
545 | BIO_free(b); | |
546 | return(ret); | |
547 | } | |
548 | #endif | |
549 | ||
6b691a5c UM |
550 | int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data, |
551 | long *len) | |
d02b48c6 RE |
552 | { |
553 | EVP_ENCODE_CTX ctx; | |
554 | int end=0,i,k,bl=0,hl=0,nohead=0; | |
555 | char buf[256]; | |
556 | BUF_MEM *nameB; | |
557 | BUF_MEM *headerB; | |
558 | BUF_MEM *dataB,*tmpB; | |
559 | ||
560 | nameB=BUF_MEM_new(); | |
561 | headerB=BUF_MEM_new(); | |
562 | dataB=BUF_MEM_new(); | |
563 | if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) | |
564 | { | |
565 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
566 | return(0); | |
567 | } | |
568 | ||
569 | buf[254]='\0'; | |
570 | for (;;) | |
571 | { | |
572 | i=BIO_gets(bp,buf,254); | |
573 | ||
574 | if (i <= 0) | |
575 | { | |
576 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE); | |
577 | goto err; | |
578 | } | |
579 | ||
580 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
581 | buf[++i]='\n'; buf[++i]='\0'; | |
582 | ||
583 | if (strncmp(buf,"-----BEGIN ",11) == 0) | |
584 | { | |
585 | i=strlen(&(buf[11])); | |
586 | ||
587 | if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0) | |
588 | continue; | |
589 | if (!BUF_MEM_grow(nameB,i+9)) | |
590 | { | |
591 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
592 | goto err; | |
593 | } | |
594 | strncpy(nameB->data,&(buf[11]),(unsigned int)i-6); | |
595 | nameB->data[i-6]='\0'; | |
596 | break; | |
597 | } | |
598 | } | |
599 | hl=0; | |
600 | if (!BUF_MEM_grow(headerB,256)) | |
601 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
602 | headerB->data[0]='\0'; | |
603 | for (;;) | |
604 | { | |
605 | i=BIO_gets(bp,buf,254); | |
606 | if (i <= 0) break; | |
607 | ||
608 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
609 | buf[++i]='\n'; buf[++i]='\0'; | |
610 | ||
611 | if (buf[0] == '\n') break; | |
612 | if (!BUF_MEM_grow(headerB,hl+i+9)) | |
613 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
614 | if (strncmp(buf,"-----END ",9) == 0) | |
615 | { | |
616 | nohead=1; | |
617 | break; | |
618 | } | |
619 | strncpy(&(headerB->data[hl]),buf,(unsigned int)i); | |
620 | headerB->data[hl+i]='\0'; | |
621 | hl+=i; | |
622 | } | |
623 | ||
624 | bl=0; | |
625 | if (!BUF_MEM_grow(dataB,1024)) | |
626 | { PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; } | |
627 | dataB->data[0]='\0'; | |
628 | if (!nohead) | |
629 | { | |
630 | for (;;) | |
631 | { | |
632 | i=BIO_gets(bp,buf,254); | |
633 | if (i <= 0) break; | |
634 | ||
635 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
636 | buf[++i]='\n'; buf[++i]='\0'; | |
637 | ||
638 | if (i != 65) end=1; | |
639 | if (strncmp(buf,"-----END ",9) == 0) | |
640 | break; | |
641 | if (i > 65) break; | |
642 | if (!BUF_MEM_grow(dataB,i+bl+9)) | |
643 | { | |
644 | PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); | |
645 | goto err; | |
646 | } | |
647 | strncpy(&(dataB->data[bl]),buf,(unsigned int)i); | |
648 | dataB->data[bl+i]='\0'; | |
649 | bl+=i; | |
650 | if (end) | |
651 | { | |
652 | buf[0]='\0'; | |
653 | i=BIO_gets(bp,buf,254); | |
654 | if (i <= 0) break; | |
655 | ||
656 | while ((i >= 0) && (buf[i] <= ' ')) i--; | |
657 | buf[++i]='\n'; buf[++i]='\0'; | |
658 | ||
659 | break; | |
660 | } | |
661 | } | |
662 | } | |
663 | else | |
664 | { | |
665 | tmpB=headerB; | |
666 | headerB=dataB; | |
667 | dataB=tmpB; | |
668 | bl=hl; | |
669 | } | |
670 | i=strlen(nameB->data); | |
671 | if ( (strncmp(buf,"-----END ",9) != 0) || | |
672 | (strncmp(nameB->data,&(buf[9]),(unsigned int)i) != 0) || | |
673 | (strncmp(&(buf[9+i]),"-----\n",6) != 0)) | |
674 | { | |
675 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE); | |
676 | goto err; | |
677 | } | |
678 | ||
679 | EVP_DecodeInit(&ctx); | |
680 | i=EVP_DecodeUpdate(&ctx, | |
681 | (unsigned char *)dataB->data,&bl, | |
682 | (unsigned char *)dataB->data,bl); | |
683 | if (i < 0) | |
684 | { | |
685 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
686 | goto err; | |
687 | } | |
688 | i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k); | |
689 | if (i < 0) | |
690 | { | |
691 | PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE); | |
692 | goto err; | |
693 | } | |
694 | bl+=k; | |
695 | ||
696 | if (bl == 0) goto err; | |
697 | *name=nameB->data; | |
698 | *header=headerB->data; | |
699 | *data=(unsigned char *)dataB->data; | |
700 | *len=bl; | |
701 | Free(nameB); | |
702 | Free(headerB); | |
703 | Free(dataB); | |
704 | return(1); | |
705 | err: | |
706 | BUF_MEM_free(nameB); | |
707 | BUF_MEM_free(headerB); | |
708 | BUF_MEM_free(dataB); | |
709 | return(0); | |
710 | } |