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 <stdio.h> 60 #include "cryptlib.h" 61 #include <openssl/buffer.h> 62 #include <openssl/objects.h> 63 #include <openssl/evp.h> 64 #include <openssl/x509.h> 65 #include <openssl/pem.h> 66 #ifndef OPENSSL_NO_RSA 67 #include <openssl/rsa.h> 68 #endif 69 #ifndef OPENSSL_NO_DSA 70 #include <openssl/dsa.h> 71 #endif 72 73 #ifndef OPENSSL_NO_FP_API 74 STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u) 75 { 76 BIO *b; 77 STACK_OF(X509_INFO) *ret; 78 79 if ((b=BIO_new(BIO_s_file())) == NULL) 80 { 81 PEMerr(PEM_F_PEM_X509_INFO_READ,ERR_R_BUF_LIB); 82 return(0); 83 } 84 BIO_set_fp(b,fp,BIO_NOCLOSE); 85 ret=PEM_X509_INFO_read_bio(b,sk,cb,u); 86 BIO_free(b); 87 return(ret); 88 } 89 #endif 90 91 STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u) 92 { 93 X509_INFO *xi=NULL; 94 char *name=NULL,*header=NULL; 95 void *pp; 96 unsigned char *data=NULL; 97 const unsigned char *p; 98 long len,error=0; 99 int ok=0; 100 STACK_OF(X509_INFO) *ret=NULL; 101 unsigned int i,raw; 102 d2i_of_void *d2i; 103 104 if (sk == NULL) 105 { 106 if ((ret=sk_X509_INFO_new_null()) == NULL) 107 { 108 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_MALLOC_FAILURE); 109 goto err; 110 } 111 } 112 else 113 ret=sk; 114 115 if ((xi=X509_INFO_new()) == NULL) goto err; 116 for (;;) 117 { 118 raw=0; 119 i=PEM_read_bio(bp,&name,&header,&data,&len); 120 if (i == 0) 121 { 122 error=ERR_GET_REASON(ERR_peek_last_error()); 123 if (error == PEM_R_NO_START_LINE) 124 { 125 ERR_clear_error(); 126 break; 127 } 128 goto err; 129 } 130 start: 131 if ( (strcmp(name,PEM_STRING_X509) == 0) || 132 (strcmp(name,PEM_STRING_X509_OLD) == 0)) 133 { 134 d2i=(D2I_OF(void))d2i_X509; 135 if (xi->x509 != NULL) 136 { 137 if (!sk_X509_INFO_push(ret,xi)) goto err; 138 if ((xi=X509_INFO_new()) == NULL) goto err; 139 goto start; 140 } 141 pp=&(xi->x509); 142 } 143 else if ((strcmp(name,PEM_STRING_X509_TRUSTED) == 0)) 144 { 145 d2i=(D2I_OF(void))d2i_X509_AUX; 146 if (xi->x509 != NULL) 147 { 148 if (!sk_X509_INFO_push(ret,xi)) goto err; 149 if ((xi=X509_INFO_new()) == NULL) goto err; 150 goto start; 151 } 152 pp=&(xi->x509); 153 } 154 else if (strcmp(name,PEM_STRING_X509_CRL) == 0) 155 { 156 d2i=(D2I_OF(void))d2i_X509_CRL; 157 if (xi->crl != NULL) 158 { 159 if (!sk_X509_INFO_push(ret,xi)) goto err; 160 if ((xi=X509_INFO_new()) == NULL) goto err; 161 goto start; 162 } 163 pp=&(xi->crl); 164 } 165 else 166 #ifndef OPENSSL_NO_RSA 167 if (strcmp(name,PEM_STRING_RSA) == 0) 168 { 169 d2i=(D2I_OF(void))d2i_RSAPrivateKey; 170 if (xi->x_pkey != NULL) 171 { 172 if (!sk_X509_INFO_push(ret,xi)) goto err; 173 if ((xi=X509_INFO_new()) == NULL) goto err; 174 goto start; 175 } 176 177 xi->enc_data=NULL; 178 xi->enc_len=0; 179 180 xi->x_pkey=X509_PKEY_new(); 181 if ((xi->x_pkey->dec_pkey=EVP_PKEY_new()) == NULL) 182 goto err; 183 xi->x_pkey->dec_pkey->type=EVP_PKEY_RSA; 184 pp=&(xi->x_pkey->dec_pkey->pkey.rsa); 185 if ((int)strlen(header) > 10) /* assume encrypted */ 186 raw=1; 187 } 188 else 189 #endif 190 #ifndef OPENSSL_NO_DSA 191 if (strcmp(name,PEM_STRING_DSA) == 0) 192 { 193 d2i=(D2I_OF(void))d2i_DSAPrivateKey; 194 if (xi->x_pkey != NULL) 195 { 196 if (!sk_X509_INFO_push(ret,xi)) goto err; 197 if ((xi=X509_INFO_new()) == NULL) goto err; 198 goto start; 199 } 200 201 xi->enc_data=NULL; 202 xi->enc_len=0; 203 204 xi->x_pkey=X509_PKEY_new(); 205 if ((xi->x_pkey->dec_pkey=EVP_PKEY_new()) == NULL) 206 goto err; 207 xi->x_pkey->dec_pkey->type=EVP_PKEY_DSA; 208 pp=&xi->x_pkey->dec_pkey->pkey.dsa; 209 if ((int)strlen(header) > 10) /* assume encrypted */ 210 raw=1; 211 } 212 else 213 #endif 214 #ifndef OPENSSL_NO_EC 215 if (strcmp(name,PEM_STRING_ECPRIVATEKEY) == 0) 216 { 217 d2i=(D2I_OF(void))d2i_ECPrivateKey; 218 if (xi->x_pkey != NULL) 219 { 220 if (!sk_X509_INFO_push(ret,xi)) goto err; 221 if ((xi=X509_INFO_new()) == NULL) goto err; 222 goto start; 223 } 224 225 xi->enc_data=NULL; 226 xi->enc_len=0; 227 228 xi->x_pkey=X509_PKEY_new(); 229 if ((xi->x_pkey->dec_pkey=EVP_PKEY_new()) == NULL) 230 goto err; 231 xi->x_pkey->dec_pkey->type=EVP_PKEY_EC; 232 pp=&(xi->x_pkey->dec_pkey->pkey.ec); 233 if ((int)strlen(header) > 10) /* assume encrypted */ 234 raw=1; 235 } 236 else 237 #endif 238 { 239 d2i=NULL; 240 pp=NULL; 241 } 242 243 if (d2i != NULL) 244 { 245 if (!raw) 246 { 247 EVP_CIPHER_INFO cipher; 248 249 if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) 250 goto err; 251 if (!PEM_do_header(&cipher,data,&len,cb,u)) 252 goto err; 253 p=data; 254 if (d2i(pp,&p,len) == NULL) 255 { 256 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_ASN1_LIB); 257 goto err; 258 } 259 } 260 else 261 { /* encrypted RSA data */ 262 if (!PEM_get_EVP_CIPHER_INFO(header, 263 &xi->enc_cipher)) goto err; 264 xi->enc_data=(char *)data; 265 xi->enc_len=(int)len; 266 data=NULL; 267 } 268 } 269 else { 270 /* unknown */ 271 } 272 if (name != NULL) OPENSSL_free(name); 273 if (header != NULL) OPENSSL_free(header); 274 if (data != NULL) OPENSSL_free(data); 275 name=NULL; 276 header=NULL; 277 data=NULL; 278 } 279 280 /* if the last one hasn't been pushed yet and there is anything 281 * in it then add it to the stack ... 282 */ 283 if ((xi->x509 != NULL) || (xi->crl != NULL) || 284 (xi->x_pkey != NULL) || (xi->enc_data != NULL)) 285 { 286 if (!sk_X509_INFO_push(ret,xi)) goto err; 287 xi=NULL; 288 } 289 ok=1; 290 err: 291 if (xi != NULL) X509_INFO_free(xi); 292 if (!ok) 293 { 294 for (i=0; ((int)i)<sk_X509_INFO_num(ret); i++) 295 { 296 xi=sk_X509_INFO_value(ret,i); 297 X509_INFO_free(xi); 298 } 299 if (ret != sk) sk_X509_INFO_free(ret); 300 ret=NULL; 301 } 302 303 if (name != NULL) OPENSSL_free(name); 304 if (header != NULL) OPENSSL_free(header); 305 if (data != NULL) OPENSSL_free(data); 306 return(ret); 307 } 308 309 310 /* A TJH addition */ 311 int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, 312 unsigned char *kstr, int klen, pem_password_cb *cb, void *u) 313 { 314 EVP_CIPHER_CTX ctx; 315 int i,ret=0; 316 unsigned char *data=NULL; 317 const char *objstr=NULL; 318 char buf[PEM_BUFSIZE]; 319 unsigned char *iv=NULL; 320 321 if (enc != NULL) 322 { 323 objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc)); 324 if (objstr == NULL) 325 { 326 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); 327 goto err; 328 } 329 } 330 331 /* now for the fun part ... if we have a private key then 332 * we have to be able to handle a not-yet-decrypted key 333 * being written out correctly ... if it is decrypted or 334 * it is non-encrypted then we use the base code 335 */ 336 if (xi->x_pkey!=NULL) 337 { 338 if ( (xi->enc_data!=NULL) && (xi->enc_len>0) ) 339 { 340 /* copy from weirdo names into more normal things */ 341 iv=xi->enc_cipher.iv; 342 data=(unsigned char *)xi->enc_data; 343 i=xi->enc_len; 344 345 /* we take the encryption data from the 346 * internal stuff rather than what the 347 * user has passed us ... as we have to 348 * match exactly for some strange reason 349 */ 350 objstr=OBJ_nid2sn( 351 EVP_CIPHER_nid(xi->enc_cipher.cipher)); 352 if (objstr == NULL) 353 { 354 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); 355 goto err; 356 } 357 358 /* create the right magic header stuff */ 359 OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf); 360 buf[0]='\0'; 361 PEM_proc_type(buf,PEM_TYPE_ENCRYPTED); 362 PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv); 363 364 /* use the normal code to write things out */ 365 i=PEM_write_bio(bp,PEM_STRING_RSA,buf,data,i); 366 if (i <= 0) goto err; 367 } 368 else 369 { 370 /* Add DSA/DH */ 371 #ifndef OPENSSL_NO_RSA 372 /* normal optionally encrypted stuff */ 373 if (PEM_write_bio_RSAPrivateKey(bp, 374 xi->x_pkey->dec_pkey->pkey.rsa, 375 enc,kstr,klen,cb,u)<=0) 376 goto err; 377 #endif 378 } 379 } 380 381 /* if we have a certificate then write it out now */ 382 if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp,xi->x509) <= 0)) 383 goto err; 384 385 /* we are ignoring anything else that is loaded into the X509_INFO 386 * structure for the moment ... as I don't need it so I'm not 387 * coding it here and Eric can do it when this makes it into the 388 * base library --tjh 389 */ 390 391 ret=1; 392 393 err: 394 OPENSSL_cleanse((char *)&ctx,sizeof(ctx)); 395 OPENSSL_cleanse(buf,PEM_BUFSIZE); 396 return(ret); 397 } 398