Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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,ptype; |
| 102 | d2i_of_void *d2i = 0; |
| 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 | ptype = 0; |
| 120 | i=PEM_read_bio(bp,&name,&header,&data,&len); |
| 121 | if (i == 0) |
| 122 | { |
| 123 | error=ERR_GET_REASON(ERR_peek_last_error()); |
| 124 | if (error == PEM_R_NO_START_LINE) |
| 125 | { |
| 126 | ERR_clear_error(); |
| 127 | break; |
| 128 | } |
| 129 | goto err; |
| 130 | } |
| 131 | start: |
| 132 | if ( (strcmp(name,PEM_STRING_X509) == 0) || |
| 133 | (strcmp(name,PEM_STRING_X509_OLD) == 0)) |
| 134 | { |
| 135 | d2i=(D2I_OF(void))d2i_X509; |
| 136 | if (xi->x509 != NULL) |
| 137 | { |
| 138 | if (!sk_X509_INFO_push(ret,xi)) goto err; |
| 139 | if ((xi=X509_INFO_new()) == NULL) goto err; |
| 140 | goto start; |
| 141 | } |
| 142 | pp=&(xi->x509); |
| 143 | } |
| 144 | else if ((strcmp(name,PEM_STRING_X509_TRUSTED) == 0)) |
| 145 | { |
| 146 | d2i=(D2I_OF(void))d2i_X509_AUX; |
| 147 | if (xi->x509 != NULL) |
| 148 | { |
| 149 | if (!sk_X509_INFO_push(ret,xi)) goto err; |
| 150 | if ((xi=X509_INFO_new()) == NULL) goto err; |
| 151 | goto start; |
| 152 | } |
| 153 | pp=&(xi->x509); |
| 154 | } |
| 155 | else if (strcmp(name,PEM_STRING_X509_CRL) == 0) |
| 156 | { |
| 157 | d2i=(D2I_OF(void))d2i_X509_CRL; |
| 158 | if (xi->crl != NULL) |
| 159 | { |
| 160 | if (!sk_X509_INFO_push(ret,xi)) goto err; |
| 161 | if ((xi=X509_INFO_new()) == NULL) goto err; |
| 162 | goto start; |
| 163 | } |
| 164 | pp=&(xi->crl); |
| 165 | } |
| 166 | else |
| 167 | #ifndef OPENSSL_NO_RSA |
| 168 | if (strcmp(name,PEM_STRING_RSA) == 0) |
| 169 | { |
| 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 | ptype=EVP_PKEY_RSA; |
| 182 | pp=&xi->x_pkey->dec_pkey; |
| 183 | if ((int)strlen(header) > 10) /* assume encrypted */ |
| 184 | raw=1; |
| 185 | } |
| 186 | else |
| 187 | #endif |
| 188 | #ifndef OPENSSL_NO_DSA |
| 189 | if (strcmp(name,PEM_STRING_DSA) == 0) |
| 190 | { |
| 191 | d2i=(D2I_OF(void))d2i_DSAPrivateKey; |
| 192 | if (xi->x_pkey != NULL) |
| 193 | { |
| 194 | if (!sk_X509_INFO_push(ret,xi)) goto err; |
| 195 | if ((xi=X509_INFO_new()) == NULL) goto err; |
| 196 | goto start; |
| 197 | } |
| 198 | |
| 199 | xi->enc_data=NULL; |
| 200 | xi->enc_len=0; |
| 201 | |
| 202 | xi->x_pkey=X509_PKEY_new(); |
| 203 | ptype = EVP_PKEY_DSA; |
| 204 | pp=&xi->x_pkey->dec_pkey; |
| 205 | if ((int)strlen(header) > 10) /* assume encrypted */ |
| 206 | raw=1; |
| 207 | } |
| 208 | else |
| 209 | #endif |
| 210 | #ifndef OPENSSL_NO_EC |
| 211 | if (strcmp(name,PEM_STRING_ECPRIVATEKEY) == 0) |
| 212 | { |
| 213 | d2i=(D2I_OF(void))d2i_ECPrivateKey; |
| 214 | if (xi->x_pkey != NULL) |
| 215 | { |
| 216 | if (!sk_X509_INFO_push(ret,xi)) goto err; |
| 217 | if ((xi=X509_INFO_new()) == NULL) goto err; |
| 218 | goto start; |
| 219 | } |
| 220 | |
| 221 | xi->enc_data=NULL; |
| 222 | xi->enc_len=0; |
| 223 | |
| 224 | xi->x_pkey=X509_PKEY_new(); |
| 225 | ptype = EVP_PKEY_EC; |
| 226 | pp=&xi->x_pkey->dec_pkey; |
| 227 | if ((int)strlen(header) > 10) /* assume encrypted */ |
| 228 | raw=1; |
| 229 | } |
| 230 | else |
| 231 | #endif |
| 232 | { |
| 233 | d2i=NULL; |
| 234 | pp=NULL; |
| 235 | } |
| 236 | |
| 237 | if (d2i != NULL) |
| 238 | { |
| 239 | if (!raw) |
| 240 | { |
| 241 | EVP_CIPHER_INFO cipher; |
| 242 | |
| 243 | if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) |
| 244 | goto err; |
| 245 | if (!PEM_do_header(&cipher,data,&len,cb,u)) |
| 246 | goto err; |
| 247 | p=data; |
| 248 | if (ptype) |
| 249 | { |
| 250 | if (!d2i_PrivateKey(ptype, pp, &p, len)) |
| 251 | { |
| 252 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_ASN1_LIB); |
| 253 | goto err; |
| 254 | } |
| 255 | } |
| 256 | else if (d2i(pp,&p,len) == NULL) |
| 257 | { |
| 258 | PEMerr(PEM_F_PEM_X509_INFO_READ_BIO,ERR_R_ASN1_LIB); |
| 259 | goto err; |
| 260 | } |
| 261 | } |
| 262 | else |
| 263 | { /* encrypted RSA data */ |
| 264 | if (!PEM_get_EVP_CIPHER_INFO(header, |
| 265 | &xi->enc_cipher)) goto err; |
| 266 | xi->enc_data=(char *)data; |
| 267 | xi->enc_len=(int)len; |
| 268 | data=NULL; |
| 269 | } |
| 270 | } |
| 271 | else { |
| 272 | /* unknown */ |
| 273 | } |
| 274 | if (name != NULL) OPENSSL_free(name); |
| 275 | if (header != NULL) OPENSSL_free(header); |
| 276 | if (data != NULL) OPENSSL_free(data); |
| 277 | name=NULL; |
| 278 | header=NULL; |
| 279 | data=NULL; |
| 280 | } |
| 281 | |
| 282 | /* if the last one hasn't been pushed yet and there is anything |
| 283 | * in it then add it to the stack ... |
| 284 | */ |
| 285 | if ((xi->x509 != NULL) || (xi->crl != NULL) || |
| 286 | (xi->x_pkey != NULL) || (xi->enc_data != NULL)) |
| 287 | { |
| 288 | if (!sk_X509_INFO_push(ret,xi)) goto err; |
| 289 | xi=NULL; |
| 290 | } |
| 291 | ok=1; |
| 292 | err: |
| 293 | if (xi != NULL) X509_INFO_free(xi); |
| 294 | if (!ok) |
| 295 | { |
| 296 | for (i=0; ((int)i)<sk_X509_INFO_num(ret); i++) |
| 297 | { |
| 298 | xi=sk_X509_INFO_value(ret,i); |
| 299 | X509_INFO_free(xi); |
| 300 | } |
| 301 | if (ret != sk) sk_X509_INFO_free(ret); |
| 302 | ret=NULL; |
| 303 | } |
| 304 | |
| 305 | if (name != NULL) OPENSSL_free(name); |
| 306 | if (header != NULL) OPENSSL_free(header); |
| 307 | if (data != NULL) OPENSSL_free(data); |
| 308 | return(ret); |
| 309 | } |
| 310 | |
| 311 | |
| 312 | /* A TJH addition */ |
| 313 | int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, |
| 314 | unsigned char *kstr, int klen, pem_password_cb *cb, void *u) |
| 315 | { |
| 316 | EVP_CIPHER_CTX ctx; |
| 317 | int i,ret=0; |
| 318 | unsigned char *data=NULL; |
| 319 | const char *objstr=NULL; |
| 320 | char buf[PEM_BUFSIZE]; |
| 321 | unsigned char *iv=NULL; |
| 322 | |
| 323 | if (enc != NULL) |
| 324 | { |
| 325 | objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc)); |
| 326 | if (objstr == NULL) |
| 327 | { |
| 328 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); |
| 329 | goto err; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | /* now for the fun part ... if we have a private key then |
| 334 | * we have to be able to handle a not-yet-decrypted key |
| 335 | * being written out correctly ... if it is decrypted or |
| 336 | * it is non-encrypted then we use the base code |
| 337 | */ |
| 338 | if (xi->x_pkey!=NULL) |
| 339 | { |
| 340 | if ( (xi->enc_data!=NULL) && (xi->enc_len>0) ) |
| 341 | { |
| 342 | if (enc == NULL) |
| 343 | { |
| 344 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_CIPHER_IS_NULL); |
| 345 | goto err; |
| 346 | } |
| 347 | |
| 348 | /* copy from weirdo names into more normal things */ |
| 349 | iv=xi->enc_cipher.iv; |
| 350 | data=(unsigned char *)xi->enc_data; |
| 351 | i=xi->enc_len; |
| 352 | |
| 353 | /* we take the encryption data from the |
| 354 | * internal stuff rather than what the |
| 355 | * user has passed us ... as we have to |
| 356 | * match exactly for some strange reason |
| 357 | */ |
| 358 | objstr=OBJ_nid2sn( |
| 359 | EVP_CIPHER_nid(xi->enc_cipher.cipher)); |
| 360 | if (objstr == NULL) |
| 361 | { |
| 362 | PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER); |
| 363 | goto err; |
| 364 | } |
| 365 | |
| 366 | /* create the right magic header stuff */ |
| 367 | OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf); |
| 368 | buf[0]='\0'; |
| 369 | PEM_proc_type(buf,PEM_TYPE_ENCRYPTED); |
| 370 | PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv); |
| 371 | |
| 372 | /* use the normal code to write things out */ |
| 373 | i=PEM_write_bio(bp,PEM_STRING_RSA,buf,data,i); |
| 374 | if (i <= 0) goto err; |
| 375 | } |
| 376 | else |
| 377 | { |
| 378 | /* Add DSA/DH */ |
| 379 | #ifndef OPENSSL_NO_RSA |
| 380 | /* normal optionally encrypted stuff */ |
| 381 | if (PEM_write_bio_RSAPrivateKey(bp, |
| 382 | xi->x_pkey->dec_pkey->pkey.rsa, |
| 383 | enc,kstr,klen,cb,u)<=0) |
| 384 | goto err; |
| 385 | #endif |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | /* if we have a certificate then write it out now */ |
| 390 | if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp,xi->x509) <= 0)) |
| 391 | goto err; |
| 392 | |
| 393 | /* we are ignoring anything else that is loaded into the X509_INFO |
| 394 | * structure for the moment ... as I don't need it so I'm not |
| 395 | * coding it here and Eric can do it when this makes it into the |
| 396 | * base library --tjh |
| 397 | */ |
| 398 | |
| 399 | ret=1; |
| 400 | |
| 401 | err: |
| 402 | OPENSSL_cleanse((char *)&ctx,sizeof(ctx)); |
| 403 | OPENSSL_cleanse(buf,PEM_BUFSIZE); |
| 404 | return(ret); |
| 405 | } |