1 /* ssl/ssl_ciph.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 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 #include <stdio.h> 117 #include <openssl/objects.h> 118 #include <openssl/comp.h> 119 #include "ssl_locl.h" 120 121 #define SSL_ENC_DES_IDX 0 122 #define SSL_ENC_3DES_IDX 1 123 #define SSL_ENC_RC4_IDX 2 124 #define SSL_ENC_RC2_IDX 3 125 #define SSL_ENC_IDEA_IDX 4 126 #define SSL_ENC_eFZA_IDX 5 127 #define SSL_ENC_NULL_IDX 6 128 #define SSL_ENC_AES128_IDX 7 129 #define SSL_ENC_AES256_IDX 8 130 #define SSL_ENC_NUM_IDX 9 131 #define SSL_ENC_CAMELLIA128_IDX 9 132 #define SSL_ENC_CAMELLIA256_IDX 10 133 #undef SSL_ENC_NUM_IDX 134 #define SSL_ENC_NUM_IDX 11 135 136 137 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ 138 NULL,NULL,NULL,NULL,NULL,NULL, 139 }; 140 141 #define SSL_COMP_NULL_IDX 0 142 #define SSL_COMP_ZLIB_IDX 1 143 #define SSL_COMP_NUM_IDX 2 144 145 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; 146 147 #define SSL_MD_MD5_IDX 0 148 #define SSL_MD_SHA1_IDX 1 149 #define SSL_MD_NUM_IDX 2 150 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ 151 NULL,NULL, 152 }; 153 154 #define CIPHER_ADD 1 155 #define CIPHER_KILL 2 156 #define CIPHER_DEL 3 157 #define CIPHER_ORD 4 158 #define CIPHER_SPECIAL 5 159 160 typedef struct cipher_order_st 161 { 162 SSL_CIPHER *cipher; 163 int active; 164 int dead; 165 struct cipher_order_st *next,*prev; 166 } CIPHER_ORDER; 167 168 static const SSL_CIPHER cipher_aliases[]={ 169 /* Don't include eNULL unless specifically enabled. */ 170 /* Don't include ECC in ALL because these ciphers are not yet official. */ 171 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */ 172 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */ 173 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */ 174 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0}, 175 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */ 176 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0}, 177 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, 178 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, 179 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0}, 180 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0}, 181 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0}, 182 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0}, 183 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0}, 184 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */ 185 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0}, 186 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0}, 187 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0}, 188 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0}, 189 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, 190 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0}, 191 192 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0}, 193 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0}, 194 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0}, 195 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0}, 196 #ifndef OPENSSL_NO_IDEA 197 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, 198 #endif 199 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, 200 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, 201 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, 202 {0,SSL_TXT_CAMELLIA, 0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, 203 204 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, 205 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, 206 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, 207 208 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, 209 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 210 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 211 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 212 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, 213 214 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, 215 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, 216 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, 217 218 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 219 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 220 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, 221 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, 222 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, 223 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, 224 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, 225 }; 226 227 void ssl_load_ciphers(void) 228 { 229 ssl_cipher_methods[SSL_ENC_DES_IDX]= 230 EVP_get_cipherbyname(SN_des_cbc); 231 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 232 EVP_get_cipherbyname(SN_des_ede3_cbc); 233 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 234 EVP_get_cipherbyname(SN_rc4); 235 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 236 EVP_get_cipherbyname(SN_rc2_cbc); 237 #ifndef OPENSSL_NO_IDEA 238 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 239 EVP_get_cipherbyname(SN_idea_cbc); 240 #else 241 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 242 #endif 243 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 244 EVP_get_cipherbyname(SN_aes_128_cbc); 245 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 246 EVP_get_cipherbyname(SN_aes_256_cbc); 247 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 248 EVP_get_cipherbyname(SN_camellia_128_cbc); 249 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 250 EVP_get_cipherbyname(SN_camellia_256_cbc); 251 252 ssl_digest_methods[SSL_MD_MD5_IDX]= 253 EVP_get_digestbyname(SN_md5); 254 ssl_digest_methods[SSL_MD_SHA1_IDX]= 255 EVP_get_digestbyname(SN_sha1); 256 } 257 258 259 #ifndef OPENSSL_NO_COMP 260 261 static int sk_comp_cmp(const SSL_COMP * const *a, 262 const SSL_COMP * const *b) 263 { 264 return((*a)->id-(*b)->id); 265 } 266 267 static void load_builtin_compressions(void) 268 { 269 int got_write_lock = 0; 270 271 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 272 if (ssl_comp_methods == NULL) 273 { 274 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 275 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 276 got_write_lock = 1; 277 278 if (ssl_comp_methods == NULL) 279 { 280 SSL_COMP *comp = NULL; 281 282 MemCheck_off(); 283 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 284 if (ssl_comp_methods != NULL) 285 { 286 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 287 if (comp != NULL) 288 { 289 comp->method=COMP_zlib(); 290 if (comp->method 291 && comp->method->type == NID_undef) 292 OPENSSL_free(comp); 293 else 294 { 295 comp->id=SSL_COMP_ZLIB_IDX; 296 comp->name=comp->method->name; 297 sk_SSL_COMP_push(ssl_comp_methods,comp); 298 } 299 } 300 } 301 MemCheck_on(); 302 } 303 } 304 305 if (got_write_lock) 306 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 307 else 308 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 309 } 310 #endif 311 312 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 313 const EVP_MD **md, SSL_COMP **comp) 314 { 315 int i; 316 SSL_CIPHER *c; 317 318 c=s->cipher; 319 if (c == NULL) return(0); 320 if (comp != NULL) 321 { 322 SSL_COMP ctmp; 323 #ifndef OPENSSL_NO_COMP 324 load_builtin_compressions(); 325 #endif 326 327 *comp=NULL; 328 ctmp.id=s->compress_meth; 329 if (ssl_comp_methods != NULL) 330 { 331 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 332 if (i >= 0) 333 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 334 else 335 *comp=NULL; 336 } 337 } 338 339 if ((enc == NULL) || (md == NULL)) return(0); 340 341 switch (c->algorithms & SSL_ENC_MASK) 342 { 343 case SSL_DES: 344 i=SSL_ENC_DES_IDX; 345 break; 346 case SSL_3DES: 347 i=SSL_ENC_3DES_IDX; 348 break; 349 case SSL_RC4: 350 i=SSL_ENC_RC4_IDX; 351 break; 352 case SSL_RC2: 353 i=SSL_ENC_RC2_IDX; 354 break; 355 case SSL_IDEA: 356 i=SSL_ENC_IDEA_IDX; 357 break; 358 case SSL_eNULL: 359 i=SSL_ENC_NULL_IDX; 360 break; 361 case SSL_AES: 362 switch(c->alg_bits) 363 { 364 case 128: i=SSL_ENC_AES128_IDX; break; 365 case 256: i=SSL_ENC_AES256_IDX; break; 366 default: i=-1; break; 367 } 368 break; 369 case SSL_CAMELLIA: 370 switch(c->alg_bits) 371 { 372 case 128: i=SSL_ENC_CAMELLIA128_IDX; break; 373 case 256: i=SSL_ENC_CAMELLIA256_IDX; break; 374 default: i=-1; break; 375 } 376 break; 377 378 default: 379 i= -1; 380 break; 381 } 382 383 if ((i < 0) || (i > SSL_ENC_NUM_IDX)) 384 *enc=NULL; 385 else 386 { 387 if (i == SSL_ENC_NULL_IDX) 388 *enc=EVP_enc_null(); 389 else 390 *enc=ssl_cipher_methods[i]; 391 } 392 393 switch (c->algorithms & SSL_MAC_MASK) 394 { 395 case SSL_MD5: 396 i=SSL_MD_MD5_IDX; 397 break; 398 case SSL_SHA1: 399 i=SSL_MD_SHA1_IDX; 400 break; 401 default: 402 i= -1; 403 break; 404 } 405 if ((i < 0) || (i > SSL_MD_NUM_IDX)) 406 *md=NULL; 407 else 408 *md=ssl_digest_methods[i]; 409 410 if ((*enc != NULL) && (*md != NULL)) 411 return(1); 412 else 413 return(0); 414 } 415 416 #define ITEM_SEP(a) \ 417 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 418 419 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 420 CIPHER_ORDER **tail) 421 { 422 if (curr == *tail) return; 423 if (curr == *head) 424 *head=curr->next; 425 if (curr->prev != NULL) 426 curr->prev->next=curr->next; 427 if (curr->next != NULL) /* should always be true */ 428 curr->next->prev=curr->prev; 429 (*tail)->next=curr; 430 curr->prev= *tail; 431 curr->next=NULL; 432 *tail=curr; 433 } 434 435 static unsigned long ssl_cipher_get_disabled(void) 436 { 437 unsigned long mask; 438 439 mask = SSL_kFZA; 440 #ifdef OPENSSL_NO_RSA 441 mask |= SSL_aRSA|SSL_kRSA; 442 #endif 443 #ifdef OPENSSL_NO_DSA 444 mask |= SSL_aDSS; 445 #endif 446 #ifdef OPENSSL_NO_DH 447 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; 448 #endif 449 #ifdef OPENSSL_NO_KRB5 450 mask |= SSL_kKRB5|SSL_aKRB5; 451 #endif 452 #ifdef OPENSSL_NO_ECDH 453 mask |= SSL_kECDH|SSL_kECDHE; 454 #endif 455 #ifdef SSL_FORBID_ENULL 456 mask |= SSL_eNULL; 457 #endif 458 459 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 460 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 461 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 462 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 463 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 464 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; 465 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; 466 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; 467 468 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 469 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 470 471 return(mask); 472 } 473 474 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 475 int num_of_ciphers, unsigned long mask, CIPHER_ORDER *co_list, 476 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 477 { 478 int i, co_list_num; 479 SSL_CIPHER *c; 480 481 /* 482 * We have num_of_ciphers descriptions compiled in, depending on the 483 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 484 * These will later be sorted in a linked list with at most num 485 * entries. 486 */ 487 488 /* Get the initial list of ciphers */ 489 co_list_num = 0; /* actual count of ciphers */ 490 for (i = 0; i < num_of_ciphers; i++) 491 { 492 c = ssl_method->get_cipher(i); 493 /* drop those that use any of that is not available */ 494 if ((c != NULL) && c->valid && !(c->algorithms & mask)) 495 { 496 co_list[co_list_num].cipher = c; 497 co_list[co_list_num].next = NULL; 498 co_list[co_list_num].prev = NULL; 499 co_list[co_list_num].active = 0; 500 co_list_num++; 501 #ifdef KSSL_DEBUG 502 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); 503 #endif /* KSSL_DEBUG */ 504 /* 505 if (!sk_push(ca_list,(char *)c)) goto err; 506 */ 507 } 508 } 509 510 /* 511 * Prepare linked list from list entries 512 */ 513 for (i = 1; i < co_list_num - 1; i++) 514 { 515 co_list[i].prev = &(co_list[i-1]); 516 co_list[i].next = &(co_list[i+1]); 517 } 518 if (co_list_num > 0) 519 { 520 (*head_p) = &(co_list[0]); 521 (*head_p)->prev = NULL; 522 (*head_p)->next = &(co_list[1]); 523 (*tail_p) = &(co_list[co_list_num - 1]); 524 (*tail_p)->prev = &(co_list[co_list_num - 2]); 525 (*tail_p)->next = NULL; 526 } 527 } 528 529 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, 530 int num_of_group_aliases, unsigned long mask, 531 CIPHER_ORDER *head) 532 { 533 CIPHER_ORDER *ciph_curr; 534 SSL_CIPHER **ca_curr; 535 int i; 536 537 /* 538 * First, add the real ciphers as already collected 539 */ 540 ciph_curr = head; 541 ca_curr = ca_list; 542 while (ciph_curr != NULL) 543 { 544 *ca_curr = ciph_curr->cipher; 545 ca_curr++; 546 ciph_curr = ciph_curr->next; 547 } 548 549 /* 550 * Now we add the available ones from the cipher_aliases[] table. 551 * They represent either an algorithm, that must be fully 552 * supported (not match any bit in mask) or represent a cipher 553 * strength value (will be added in any case because algorithms=0). 554 */ 555 for (i = 0; i < num_of_group_aliases; i++) 556 { 557 if ((i == 0) || /* always fetch "ALL" */ 558 !(cipher_aliases[i].algorithms & mask)) 559 { 560 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 561 ca_curr++; 562 } 563 } 564 565 *ca_curr = NULL; /* end of list */ 566 } 567 568 static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, 569 unsigned long algorithms, unsigned long mask, 570 unsigned long algo_strength, unsigned long mask_strength, 571 int rule, int strength_bits, CIPHER_ORDER *co_list, 572 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 573 { 574 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; 575 SSL_CIPHER *cp; 576 unsigned long ma, ma_s; 577 578 #ifdef CIPHER_DEBUG 579 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", 580 rule, algorithms, mask, algo_strength, mask_strength, 581 strength_bits); 582 #endif 583 584 curr = head = *head_p; 585 curr2 = head; 586 tail2 = tail = *tail_p; 587 for (;;) 588 { 589 if ((curr == NULL) || (curr == tail2)) break; 590 curr = curr2; 591 curr2 = curr->next; 592 593 cp = curr->cipher; 594 595 /* If explicit cipher suite, match only that one for its own protocol version. 596 * Usual selection criteria will be used for similar ciphersuites from other version! */ 597 598 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) 599 { 600 if (cp->id != cipher_id) 601 continue; 602 } 603 604 /* 605 * Selection criteria is either the number of strength_bits 606 * or the algorithm used. 607 */ 608 else if (strength_bits == -1) 609 { 610 ma = mask & cp->algorithms; 611 ma_s = mask_strength & cp->algo_strength; 612 613 #ifdef CIPHER_DEBUG 614 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); 615 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); 616 #endif 617 /* 618 * Select: if none of the mask bit was met from the 619 * cipher or not all of the bits were met, the 620 * selection does not apply. 621 */ 622 if (((ma == 0) && (ma_s == 0)) || 623 ((ma & algorithms) != ma) || 624 ((ma_s & algo_strength) != ma_s)) 625 continue; /* does not apply */ 626 } 627 else if (strength_bits != cp->strength_bits) 628 continue; /* does not apply */ 629 630 #ifdef CIPHER_DEBUG 631 printf("Action = %d\n", rule); 632 #endif 633 634 /* add the cipher if it has not been added yet. */ 635 if (rule == CIPHER_ADD) 636 { 637 if (!curr->active) 638 { 639 int add_this_cipher = 1; 640 641 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) 642 { 643 /* Make sure "ECCdraft" ciphersuites are activated only if 644 * *explicitly* requested, but not implicitly (such as 645 * as part of the "AES" alias). */ 646 647 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; 648 } 649 650 if (add_this_cipher) 651 { 652 ll_append_tail(&head, curr, &tail); 653 curr->active = 1; 654 } 655 } 656 } 657 /* Move the added cipher to this location */ 658 else if (rule == CIPHER_ORD) 659 { 660 if (curr->active) 661 { 662 ll_append_tail(&head, curr, &tail); 663 } 664 } 665 else if (rule == CIPHER_DEL) 666 curr->active = 0; 667 else if (rule == CIPHER_KILL) 668 { 669 if (head == curr) 670 head = curr->next; 671 else 672 curr->prev->next = curr->next; 673 if (tail == curr) 674 tail = curr->prev; 675 curr->active = 0; 676 if (curr->next != NULL) 677 curr->next->prev = curr->prev; 678 if (curr->prev != NULL) 679 curr->prev->next = curr->next; 680 curr->next = NULL; 681 curr->prev = NULL; 682 } 683 } 684 685 *head_p = head; 686 *tail_p = tail; 687 } 688 689 static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, 690 CIPHER_ORDER **head_p, 691 CIPHER_ORDER **tail_p) 692 { 693 int max_strength_bits, i, *number_uses; 694 CIPHER_ORDER *curr; 695 696 /* 697 * This routine sorts the ciphers with descending strength. The sorting 698 * must keep the pre-sorted sequence, so we apply the normal sorting 699 * routine as '+' movement to the end of the list. 700 */ 701 max_strength_bits = 0; 702 curr = *head_p; 703 while (curr != NULL) 704 { 705 if (curr->active && 706 (curr->cipher->strength_bits > max_strength_bits)) 707 max_strength_bits = curr->cipher->strength_bits; 708 curr = curr->next; 709 } 710 711 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 712 if (!number_uses) 713 { 714 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 715 return(0); 716 } 717 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 718 719 /* 720 * Now find the strength_bits values actually used 721 */ 722 curr = *head_p; 723 while (curr != NULL) 724 { 725 if (curr->active) 726 number_uses[curr->cipher->strength_bits]++; 727 curr = curr->next; 728 } 729 /* 730 * Go through the list of used strength_bits values in descending 731 * order. 732 */ 733 for (i = max_strength_bits; i >= 0; i--) 734 if (number_uses[i] > 0) 735 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, 736 co_list, head_p, tail_p); 737 738 OPENSSL_free(number_uses); 739 return(1); 740 } 741 742 static int ssl_cipher_process_rulestr(const char *rule_str, 743 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 744 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) 745 { 746 unsigned long algorithms, mask, algo_strength, mask_strength; 747 const char *l, *start, *buf; 748 int j, multi, found, rule, retval, ok, buflen; 749 unsigned long cipher_id = 0, ssl_version = 0; 750 char ch; 751 752 retval = 1; 753 l = rule_str; 754 for (;;) 755 { 756 ch = *l; 757 758 if (ch == '\0') 759 break; /* done */ 760 if (ch == '-') 761 { rule = CIPHER_DEL; l++; } 762 else if (ch == '+') 763 { rule = CIPHER_ORD; l++; } 764 else if (ch == '!') 765 { rule = CIPHER_KILL; l++; } 766 else if (ch == '@') 767 { rule = CIPHER_SPECIAL; l++; } 768 else 769 { rule = CIPHER_ADD; } 770 771 if (ITEM_SEP(ch)) 772 { 773 l++; 774 continue; 775 } 776 777 algorithms = mask = algo_strength = mask_strength = 0; 778 779 start=l; 780 for (;;) 781 { 782 ch = *l; 783 buf = l; 784 buflen = 0; 785 #ifndef CHARSET_EBCDIC 786 while ( ((ch >= 'A') && (ch <= 'Z')) || 787 ((ch >= '0') && (ch <= '9')) || 788 ((ch >= 'a') && (ch <= 'z')) || 789 (ch == '-')) 790 #else 791 while ( isalnum(ch) || (ch == '-')) 792 #endif 793 { 794 ch = *(++l); 795 buflen++; 796 } 797 798 if (buflen == 0) 799 { 800 /* 801 * We hit something we cannot deal with, 802 * it is no command or separator nor 803 * alphanumeric, so we call this an error. 804 */ 805 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 806 SSL_R_INVALID_COMMAND); 807 retval = found = 0; 808 l++; 809 break; 810 } 811 812 if (rule == CIPHER_SPECIAL) 813 { 814 found = 0; /* unused -- avoid compiler warning */ 815 break; /* special treatment */ 816 } 817 818 /* check for multi-part specification */ 819 if (ch == '+') 820 { 821 multi=1; 822 l++; 823 } 824 else 825 multi=0; 826 827 /* 828 * Now search for the cipher alias in the ca_list. Be careful 829 * with the strncmp, because the "buflen" limitation 830 * will make the rule "ADH:SOME" and the cipher 831 * "ADH-MY-CIPHER" look like a match for buflen=3. 832 * So additionally check whether the cipher name found 833 * has the correct length. We can save a strlen() call: 834 * just checking for the '\0' at the right place is 835 * sufficient, we have to strncmp() anyway. (We cannot 836 * use strcmp(), because buf is not '\0' terminated.) 837 */ 838 j = found = 0; 839 cipher_id = 0; 840 ssl_version = 0; 841 while (ca_list[j]) 842 { 843 if (!strncmp(buf, ca_list[j]->name, buflen) && 844 (ca_list[j]->name[buflen] == '\0')) 845 { 846 found = 1; 847 break; 848 } 849 else 850 j++; 851 } 852 if (!found) 853 break; /* ignore this entry */ 854 855 /* New algorithms: 856 * 1 - any old restrictions apply outside new mask 857 * 2 - any new restrictions apply outside old mask 858 * 3 - enforce old & new where masks intersect 859 */ 860 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ 861 (ca_list[j]->algorithms & ~mask) | /* 2 */ 862 (algorithms & ca_list[j]->algorithms); /* 3 */ 863 mask |= ca_list[j]->mask; 864 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | 865 (ca_list[j]->algo_strength & ~mask_strength) | 866 (algo_strength & ca_list[j]->algo_strength); 867 mask_strength |= ca_list[j]->mask_strength; 868 869 /* explicit ciphersuite found */ 870 if (ca_list[j]->valid) 871 { 872 cipher_id = ca_list[j]->id; 873 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; 874 break; 875 } 876 877 if (!multi) break; 878 } 879 880 /* 881 * Ok, we have the rule, now apply it 882 */ 883 if (rule == CIPHER_SPECIAL) 884 { /* special command */ 885 ok = 0; 886 if ((buflen == 8) && 887 !strncmp(buf, "STRENGTH", 8)) 888 ok = ssl_cipher_strength_sort(co_list, 889 head_p, tail_p); 890 else 891 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 892 SSL_R_INVALID_COMMAND); 893 if (ok == 0) 894 retval = 0; 895 /* 896 * We do not support any "multi" options 897 * together with "@", so throw away the 898 * rest of the command, if any left, until 899 * end or ':' is found. 900 */ 901 while ((*l != '\0') && ITEM_SEP(*l)) 902 l++; 903 } 904 else if (found) 905 { 906 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, 907 algo_strength, mask_strength, rule, -1, 908 co_list, head_p, tail_p); 909 } 910 else 911 { 912 while ((*l != '\0') && ITEM_SEP(*l)) 913 l++; 914 } 915 if (*l == '\0') break; /* done */ 916 } 917 918 return(retval); 919 } 920 921 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 922 STACK_OF(SSL_CIPHER) **cipher_list, 923 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 924 const char *rule_str) 925 { 926 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 927 unsigned long disabled_mask; 928 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 929 const char *rule_p; 930 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 931 SSL_CIPHER **ca_list = NULL; 932 933 /* 934 * Return with error if nothing to do. 935 */ 936 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 937 return NULL; 938 939 /* 940 * To reduce the work to do we only want to process the compiled 941 * in algorithms, so we first get the mask of disabled ciphers. 942 */ 943 disabled_mask = ssl_cipher_get_disabled(); 944 945 /* 946 * Now we have to collect the available ciphers from the compiled 947 * in ciphers. We cannot get more than the number compiled in, so 948 * it is used for allocation. 949 */ 950 num_of_ciphers = ssl_method->num_ciphers(); 951 #ifdef KSSL_DEBUG 952 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 953 #endif /* KSSL_DEBUG */ 954 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 955 if (co_list == NULL) 956 { 957 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 958 return(NULL); /* Failure */ 959 } 960 961 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, 962 co_list, &head, &tail); 963 964 /* 965 * We also need cipher aliases for selecting based on the rule_str. 966 * There might be two types of entries in the rule_str: 1) names 967 * of ciphers themselves 2) aliases for groups of ciphers. 968 * For 1) we need the available ciphers and for 2) the cipher 969 * groups of cipher_aliases added together in one list (otherwise 970 * we would be happy with just the cipher_aliases table). 971 */ 972 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 973 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 974 ca_list = 975 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 976 if (ca_list == NULL) 977 { 978 OPENSSL_free(co_list); 979 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 980 return(NULL); /* Failure */ 981 } 982 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, disabled_mask, 983 head); 984 985 /* 986 * If the rule_string begins with DEFAULT, apply the default rule 987 * before using the (possibly available) additional rules. 988 */ 989 ok = 1; 990 rule_p = rule_str; 991 if (strncmp(rule_str,"DEFAULT",7) == 0) 992 { 993 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 994 co_list, &head, &tail, ca_list); 995 rule_p += 7; 996 if (*rule_p == ':') 997 rule_p++; 998 } 999 1000 if (ok && (strlen(rule_p) > 0)) 1001 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, 1002 ca_list); 1003 1004 OPENSSL_free(ca_list); /* Not needed anymore */ 1005 1006 if (!ok) 1007 { /* Rule processing failure */ 1008 OPENSSL_free(co_list); 1009 return(NULL); 1010 } 1011 /* 1012 * Allocate new "cipherstack" for the result, return with error 1013 * if we cannot get one. 1014 */ 1015 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1016 { 1017 OPENSSL_free(co_list); 1018 return(NULL); 1019 } 1020 1021 /* 1022 * The cipher selection for the list is done. The ciphers are added 1023 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1024 */ 1025 for (curr = head; curr != NULL; curr = curr->next) 1026 { 1027 if (curr->active) 1028 { 1029 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1030 #ifdef CIPHER_DEBUG 1031 printf("<%s>\n",curr->cipher->name); 1032 #endif 1033 } 1034 } 1035 OPENSSL_free(co_list); /* Not needed any longer */ 1036 1037 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1038 if (tmp_cipher_list == NULL) 1039 { 1040 sk_SSL_CIPHER_free(cipherstack); 1041 return NULL; 1042 } 1043 if (*cipher_list != NULL) 1044 sk_SSL_CIPHER_free(*cipher_list); 1045 *cipher_list = cipherstack; 1046 if (*cipher_list_by_id != NULL) 1047 sk_SSL_CIPHER_free(*cipher_list_by_id); 1048 *cipher_list_by_id = tmp_cipher_list; 1049 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1050 1051 return(cipherstack); 1052 } 1053 1054 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) 1055 { 1056 int is_export,pkl,kl; 1057 const char *ver,*exp_str; 1058 const char *kx,*au,*enc,*mac; 1059 unsigned long alg,alg2,alg_s; 1060 #ifdef KSSL_DEBUG 1061 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; 1062 #else 1063 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1064 #endif /* KSSL_DEBUG */ 1065 1066 alg=cipher->algorithms; 1067 alg_s=cipher->algo_strength; 1068 alg2=cipher->algorithm2; 1069 1070 is_export=SSL_C_IS_EXPORT(cipher); 1071 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1072 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1073 exp_str=is_export?" export":""; 1074 1075 if (alg & SSL_SSLV2) 1076 ver="SSLv2"; 1077 else if (alg & SSL_SSLV3) 1078 ver="SSLv3"; 1079 else 1080 ver="unknown"; 1081 1082 switch (alg&SSL_MKEY_MASK) 1083 { 1084 case SSL_kRSA: 1085 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1086 break; 1087 case SSL_kDHr: 1088 kx="DH/RSA"; 1089 break; 1090 case SSL_kDHd: 1091 kx="DH/DSS"; 1092 break; 1093 case SSL_kKRB5: /* VRS */ 1094 case SSL_KRB5: /* VRS */ 1095 kx="KRB5"; 1096 break; 1097 case SSL_kFZA: 1098 kx="Fortezza"; 1099 break; 1100 case SSL_kEDH: 1101 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1102 break; 1103 case SSL_kECDH: 1104 case SSL_kECDHE: 1105 kx=is_export?"ECDH(<=163)":"ECDH"; 1106 break; 1107 default: 1108 kx="unknown"; 1109 } 1110 1111 switch (alg&SSL_AUTH_MASK) 1112 { 1113 case SSL_aRSA: 1114 au="RSA"; 1115 break; 1116 case SSL_aDSS: 1117 au="DSS"; 1118 break; 1119 case SSL_aDH: 1120 au="DH"; 1121 break; 1122 case SSL_aKRB5: /* VRS */ 1123 case SSL_KRB5: /* VRS */ 1124 au="KRB5"; 1125 break; 1126 case SSL_aFZA: 1127 case SSL_aNULL: 1128 au="None"; 1129 break; 1130 case SSL_aECDSA: 1131 au="ECDSA"; 1132 break; 1133 default: 1134 au="unknown"; 1135 break; 1136 } 1137 1138 switch (alg&SSL_ENC_MASK) 1139 { 1140 case SSL_DES: 1141 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1142 break; 1143 case SSL_3DES: 1144 enc="3DES(168)"; 1145 break; 1146 case SSL_RC4: 1147 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1148 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1149 break; 1150 case SSL_RC2: 1151 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1152 break; 1153 case SSL_IDEA: 1154 enc="IDEA(128)"; 1155 break; 1156 case SSL_eFZA: 1157 enc="Fortezza"; 1158 break; 1159 case SSL_eNULL: 1160 enc="None"; 1161 break; 1162 case SSL_AES: 1163 switch(cipher->strength_bits) 1164 { 1165 case 128: enc="AES(128)"; break; 1166 case 192: enc="AES(192)"; break; 1167 case 256: enc="AES(256)"; break; 1168 default: enc="AES(?""?""?)"; break; 1169 } 1170 break; 1171 case SSL_CAMELLIA: 1172 switch(cipher->strength_bits) 1173 { 1174 case 128: enc="Camellia(128)"; break; 1175 case 256: enc="Camellia(256)"; break; 1176 default: enc="Camellia(?""?""?)"; break; 1177 } 1178 break; 1179 1180 default: 1181 enc="unknown"; 1182 break; 1183 } 1184 1185 switch (alg&SSL_MAC_MASK) 1186 { 1187 case SSL_MD5: 1188 mac="MD5"; 1189 break; 1190 case SSL_SHA1: 1191 mac="SHA1"; 1192 break; 1193 default: 1194 mac="unknown"; 1195 break; 1196 } 1197 1198 if (buf == NULL) 1199 { 1200 len=128; 1201 buf=OPENSSL_malloc(len); 1202 if (buf == NULL) return("OPENSSL_malloc Error"); 1203 } 1204 else if (len < 128) 1205 return("Buffer too small"); 1206 1207 #ifdef KSSL_DEBUG 1208 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); 1209 #else 1210 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1211 #endif /* KSSL_DEBUG */ 1212 return(buf); 1213 } 1214 1215 char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1216 { 1217 int i; 1218 1219 if (c == NULL) return("(NONE)"); 1220 i=(int)(c->id>>24L); 1221 if (i == 3) 1222 return("TLSv1/SSLv3"); 1223 else if (i == 2) 1224 return("SSLv2"); 1225 else 1226 return("unknown"); 1227 } 1228 1229 /* return the actual cipher being used */ 1230 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1231 { 1232 if (c != NULL) 1233 return(c->name); 1234 return("(NONE)"); 1235 } 1236 1237 /* number of bits for symmetric cipher */ 1238 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1239 { 1240 int ret=0; 1241 1242 if (c != NULL) 1243 { 1244 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1245 ret = c->strength_bits; 1246 } 1247 return(ret); 1248 } 1249 1250 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1251 { 1252 SSL_COMP *ctmp; 1253 int i,nn; 1254 1255 if ((n == 0) || (sk == NULL)) return(NULL); 1256 nn=sk_SSL_COMP_num(sk); 1257 for (i=0; i<nn; i++) 1258 { 1259 ctmp=sk_SSL_COMP_value(sk,i); 1260 if (ctmp->id == n) 1261 return(ctmp); 1262 } 1263 return(NULL); 1264 } 1265 1266 #ifdef OPENSSL_NO_COMP 1267 void *SSL_COMP_get_compression_methods(void) 1268 { 1269 return NULL; 1270 } 1271 int SSL_COMP_add_compression_method(int id, void *cm) 1272 { 1273 return 1; 1274 } 1275 1276 const char *SSL_COMP_get_name(const void *comp) 1277 { 1278 return NULL; 1279 } 1280 #else 1281 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1282 { 1283 load_builtin_compressions(); 1284 return(ssl_comp_methods); 1285 } 1286 1287 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1288 { 1289 SSL_COMP *comp; 1290 1291 if (cm == NULL || cm->type == NID_undef) 1292 return 1; 1293 1294 /* According to draft-ietf-tls-compression-04.txt, the 1295 compression number ranges should be the following: 1296 1297 0 to 63: methods defined by the IETF 1298 64 to 192: external party methods assigned by IANA 1299 193 to 255: reserved for private use */ 1300 if (id < 193 || id > 255) 1301 { 1302 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1303 return 0; 1304 } 1305 1306 MemCheck_off(); 1307 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1308 comp->id=id; 1309 comp->method=cm; 1310 load_builtin_compressions(); 1311 if (ssl_comp_methods 1312 && !sk_SSL_COMP_find(ssl_comp_methods,comp)) 1313 { 1314 OPENSSL_free(comp); 1315 MemCheck_on(); 1316 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1317 return(1); 1318 } 1319 else if ((ssl_comp_methods == NULL) 1320 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1321 { 1322 OPENSSL_free(comp); 1323 MemCheck_on(); 1324 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1325 return(1); 1326 } 1327 else 1328 { 1329 MemCheck_on(); 1330 return(0); 1331 } 1332 } 1333 1334 const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1335 { 1336 if (comp) 1337 return comp->name; 1338 return NULL; 1339 } 1340 1341 #endif 1342