From 3e4d8f433239c40311037616b1b8833a06651ae0 Mon Sep 17 00:00:00 2001 From: Arne Schwabe Date: Mon, 16 Apr 2012 19:21:14 +0200 Subject: Initial import --- openssl/ssl/ssl_ciph.c | 1792 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1792 insertions(+) create mode 100644 openssl/ssl/ssl_ciph.c (limited to 'openssl/ssl/ssl_ciph.c') diff --git a/openssl/ssl/ssl_ciph.c b/openssl/ssl/ssl_ciph.c new file mode 100644 index 0000000..e523a8f --- /dev/null +++ b/openssl/ssl/ssl_ciph.c @@ -0,0 +1,1792 @@ +/* ssl/ssl_ciph.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ +/* ==================================================================== + * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * ECC cipher suite support in OpenSSL originally developed by + * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. + */ +/* ==================================================================== + * Copyright 2005 Nokia. All rights reserved. + * + * The portions of the attached software ("Contribution") is developed by + * Nokia Corporation and is licensed pursuant to the OpenSSL open source + * license. + * + * The Contribution, originally written by Mika Kousa and Pasi Eronen of + * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites + * support (see RFC 4279) to OpenSSL. + * + * No patent licenses or other rights except those expressly stated in + * the OpenSSL open source license shall be deemed granted or received + * expressly, by implication, estoppel, or otherwise. + * + * No assurances are provided by Nokia that the Contribution does not + * infringe the patent or other intellectual property rights of any third + * party or that the license provides you with all the necessary rights + * to make use of the Contribution. + * + * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN + * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA + * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY + * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR + * OTHERWISE. + */ + +#include +#include +#ifndef OPENSSL_NO_COMP +#include +#endif +#ifndef OPENSSL_NO_ENGINE +#include +#endif +#include "ssl_locl.h" + +#define SSL_ENC_DES_IDX 0 +#define SSL_ENC_3DES_IDX 1 +#define SSL_ENC_RC4_IDX 2 +#define SSL_ENC_RC2_IDX 3 +#define SSL_ENC_IDEA_IDX 4 +#define SSL_ENC_NULL_IDX 5 +#define SSL_ENC_AES128_IDX 6 +#define SSL_ENC_AES256_IDX 7 +#define SSL_ENC_CAMELLIA128_IDX 8 +#define SSL_ENC_CAMELLIA256_IDX 9 +#define SSL_ENC_GOST89_IDX 10 +#define SSL_ENC_SEED_IDX 11 +#define SSL_ENC_NUM_IDX 12 + + +static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ + NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, + }; + +#define SSL_COMP_NULL_IDX 0 +#define SSL_COMP_ZLIB_IDX 1 +#define SSL_COMP_NUM_IDX 2 + +static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; + +#define SSL_MD_MD5_IDX 0 +#define SSL_MD_SHA1_IDX 1 +#define SSL_MD_GOST94_IDX 2 +#define SSL_MD_GOST89MAC_IDX 3 +/*Constant SSL_MAX_DIGEST equal to size of digests array should be + * defined in the + * ssl_locl.h */ +#define SSL_MD_NUM_IDX SSL_MAX_DIGEST +static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ + NULL,NULL,NULL,NULL + }; +/* PKEY_TYPE for GOST89MAC is known in advance, but, because + * implementation is engine-provided, we'll fill it only if + * corresponding EVP_PKEY_METHOD is found + */ +static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={ + EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef + }; + +static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={ + 0,0,0,0 + }; + +static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={ + SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA, + SSL_HANDSHAKE_MAC_GOST94,0 + }; + +#define CIPHER_ADD 1 +#define CIPHER_KILL 2 +#define CIPHER_DEL 3 +#define CIPHER_ORD 4 +#define CIPHER_SPECIAL 5 + +typedef struct cipher_order_st + { + const SSL_CIPHER *cipher; + int active; + int dead; + struct cipher_order_st *next,*prev; + } CIPHER_ORDER; + +static const SSL_CIPHER cipher_aliases[]={ + /* "ALL" doesn't include eNULL (must be specifically enabled) */ + {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0}, + /* "COMPLEMENTOFALL" */ + {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0}, + + /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */ + {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0}, + + /* key exchange aliases + * (some of those using only a single bit here combine + * multiple key exchange algs according to the RFCs, + * e.g. kEDH combines DHE_DSS and DHE_RSA) */ + {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0}, + {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0}, + {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0}, + + {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0}, + {0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0}, + + /* server authentication aliases */ + {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, + {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ + {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0}, + {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0}, + {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0}, + {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0}, + {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0}, + + /* aliases combining key exchange and server authentication */ + {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, + {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0}, + {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0}, + {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0}, + {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0}, + + + /* symmetric encryption aliases */ + {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0}, + {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0}, + {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0}, + {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0}, + {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0}, + {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0}, + {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, + {0,SSL_TXT_AES128,0, 0,0,SSL_AES128,0,0,0,0,0,0}, + {0,SSL_TXT_AES256,0, 0,0,SSL_AES256,0,0,0,0,0,0}, + {0,SSL_TXT_AES,0, 0,0,SSL_AES128|SSL_AES256,0,0,0,0,0,0}, + {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0}, + {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0}, + {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0}, + + /* MAC aliases */ + {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0}, + {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, + {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, + {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0}, + {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0}, + + /* protocol version aliases */ + {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0}, + {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0}, + {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0}, + + /* export flag */ + {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, + {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, + + /* strength classes */ + {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0}, + {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0}, + {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0}, + {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0}, + {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0}, + /* FIPS 140-2 approved ciphersuite */ + {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0}, + }; +/* Search for public key algorithm with given name and + * return its pkey_id if it is available. Otherwise return 0 + */ +#ifdef OPENSSL_NO_ENGINE + +static int get_optional_pkey_id(const char *pkey_name) + { + const EVP_PKEY_ASN1_METHOD *ameth; + int pkey_id=0; + ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1); + if (ameth) + { + EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); + } + return pkey_id; + } + +#else + +static int get_optional_pkey_id(const char *pkey_name) + { + const EVP_PKEY_ASN1_METHOD *ameth; + ENGINE *tmpeng = NULL; + int pkey_id=0; + ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1); + if (ameth) + { + EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); + } + if (tmpeng) ENGINE_finish(tmpeng); + return pkey_id; + } + +#endif + +void ssl_load_ciphers(void) + { + ssl_cipher_methods[SSL_ENC_DES_IDX]= + EVP_get_cipherbyname(SN_des_cbc); + ssl_cipher_methods[SSL_ENC_3DES_IDX]= + EVP_get_cipherbyname(SN_des_ede3_cbc); + ssl_cipher_methods[SSL_ENC_RC4_IDX]= + EVP_get_cipherbyname(SN_rc4); + ssl_cipher_methods[SSL_ENC_RC2_IDX]= + EVP_get_cipherbyname(SN_rc2_cbc); +#ifndef OPENSSL_NO_IDEA + ssl_cipher_methods[SSL_ENC_IDEA_IDX]= + EVP_get_cipherbyname(SN_idea_cbc); +#else + ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; +#endif + ssl_cipher_methods[SSL_ENC_AES128_IDX]= + EVP_get_cipherbyname(SN_aes_128_cbc); + ssl_cipher_methods[SSL_ENC_AES256_IDX]= + EVP_get_cipherbyname(SN_aes_256_cbc); + ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= + EVP_get_cipherbyname(SN_camellia_128_cbc); + ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= + EVP_get_cipherbyname(SN_camellia_256_cbc); + ssl_cipher_methods[SSL_ENC_GOST89_IDX]= + EVP_get_cipherbyname(SN_gost89_cnt); + ssl_cipher_methods[SSL_ENC_SEED_IDX]= + EVP_get_cipherbyname(SN_seed_cbc); + + ssl_digest_methods[SSL_MD_MD5_IDX]= + EVP_get_digestbyname(SN_md5); + ssl_mac_secret_size[SSL_MD_MD5_IDX]= + EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); + OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); + ssl_digest_methods[SSL_MD_SHA1_IDX]= + EVP_get_digestbyname(SN_sha1); + ssl_mac_secret_size[SSL_MD_SHA1_IDX]= + EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); + OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); + ssl_digest_methods[SSL_MD_GOST94_IDX]= + EVP_get_digestbyname(SN_id_GostR3411_94); + if (ssl_digest_methods[SSL_MD_GOST94_IDX]) + { + ssl_mac_secret_size[SSL_MD_GOST94_IDX]= + EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); + OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); + } + ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= + EVP_get_digestbyname(SN_id_Gost28147_89_MAC); + ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); + if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { + ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32; + } + + } +#ifndef OPENSSL_NO_COMP + +static int sk_comp_cmp(const SSL_COMP * const *a, + const SSL_COMP * const *b) + { + return((*a)->id-(*b)->id); + } + +static void load_builtin_compressions(void) + { + int got_write_lock = 0; + + CRYPTO_r_lock(CRYPTO_LOCK_SSL); + if (ssl_comp_methods == NULL) + { + CRYPTO_r_unlock(CRYPTO_LOCK_SSL); + CRYPTO_w_lock(CRYPTO_LOCK_SSL); + got_write_lock = 1; + + if (ssl_comp_methods == NULL) + { + SSL_COMP *comp = NULL; + + MemCheck_off(); + ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); + if (ssl_comp_methods != NULL) + { + comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); + if (comp != NULL) + { + comp->method=COMP_zlib(); + if (comp->method + && comp->method->type == NID_undef) + OPENSSL_free(comp); + else + { + comp->id=SSL_COMP_ZLIB_IDX; + comp->name=comp->method->name; + sk_SSL_COMP_push(ssl_comp_methods,comp); + } + } + } + MemCheck_on(); + } + } + + if (got_write_lock) + CRYPTO_w_unlock(CRYPTO_LOCK_SSL); + else + CRYPTO_r_unlock(CRYPTO_LOCK_SSL); + } +#endif + +int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, + const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) + { + int i; + const SSL_CIPHER *c; + + c=s->cipher; + if (c == NULL) return(0); + if (comp != NULL) + { + SSL_COMP ctmp; +#ifndef OPENSSL_NO_COMP + load_builtin_compressions(); +#endif + + *comp=NULL; + ctmp.id=s->compress_meth; + if (ssl_comp_methods != NULL) + { + i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); + if (i >= 0) + *comp=sk_SSL_COMP_value(ssl_comp_methods,i); + else + *comp=NULL; + } + } + + if ((enc == NULL) || (md == NULL)) return(0); + + switch (c->algorithm_enc) + { + case SSL_DES: + i=SSL_ENC_DES_IDX; + break; + case SSL_3DES: + i=SSL_ENC_3DES_IDX; + break; + case SSL_RC4: + i=SSL_ENC_RC4_IDX; + break; + case SSL_RC2: + i=SSL_ENC_RC2_IDX; + break; + case SSL_IDEA: + i=SSL_ENC_IDEA_IDX; + break; + case SSL_eNULL: + i=SSL_ENC_NULL_IDX; + break; + case SSL_AES128: + i=SSL_ENC_AES128_IDX; + break; + case SSL_AES256: + i=SSL_ENC_AES256_IDX; + break; + case SSL_CAMELLIA128: + i=SSL_ENC_CAMELLIA128_IDX; + break; + case SSL_CAMELLIA256: + i=SSL_ENC_CAMELLIA256_IDX; + break; + case SSL_eGOST2814789CNT: + i=SSL_ENC_GOST89_IDX; + break; + case SSL_SEED: + i=SSL_ENC_SEED_IDX; + break; + default: + i= -1; + break; + } + + if ((i < 0) || (i > SSL_ENC_NUM_IDX)) + *enc=NULL; + else + { + if (i == SSL_ENC_NULL_IDX) + *enc=EVP_enc_null(); + else + *enc=ssl_cipher_methods[i]; + } + + switch (c->algorithm_mac) + { + case SSL_MD5: + i=SSL_MD_MD5_IDX; + break; + case SSL_SHA1: + i=SSL_MD_SHA1_IDX; + break; + case SSL_GOST94: + i = SSL_MD_GOST94_IDX; + break; + case SSL_GOST89MAC: + i = SSL_MD_GOST89MAC_IDX; + break; + default: + i= -1; + break; + } + if ((i < 0) || (i > SSL_MD_NUM_IDX)) + { + *md=NULL; + if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; + if (mac_secret_size!=NULL) *mac_secret_size = 0; + + } + else + { + *md=ssl_digest_methods[i]; + if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; + if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i]; + } + + if ((*enc != NULL) && (*md != NULL) && (!mac_pkey_type||*mac_pkey_type != NID_undef)) + return(1); + else + return(0); + } + +int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) +{ + if (idx <0||idx>=SSL_MD_NUM_IDX) + { + return 0; + } + if (ssl_handshake_digest_flag[idx]==0) return 0; + *mask = ssl_handshake_digest_flag[idx]; + *md = ssl_digest_methods[idx]; + return 1; +} + +#define ITEM_SEP(a) \ + (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) + +static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, + CIPHER_ORDER **tail) + { + if (curr == *tail) return; + if (curr == *head) + *head=curr->next; + if (curr->prev != NULL) + curr->prev->next=curr->next; + if (curr->next != NULL) + curr->next->prev=curr->prev; + (*tail)->next=curr; + curr->prev= *tail; + curr->next=NULL; + *tail=curr; + } + +static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, + CIPHER_ORDER **tail) + { + if (curr == *head) return; + if (curr == *tail) + *tail=curr->prev; + if (curr->next != NULL) + curr->next->prev=curr->prev; + if (curr->prev != NULL) + curr->prev->next=curr->next; + (*head)->prev=curr; + curr->next= *head; + curr->prev=NULL; + *head=curr; + } + +static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) + { + *mkey = 0; + *auth = 0; + *enc = 0; + *mac = 0; + *ssl = 0; + +#ifdef OPENSSL_NO_RSA + *mkey |= SSL_kRSA; + *auth |= SSL_aRSA; +#endif +#ifdef OPENSSL_NO_DSA + *auth |= SSL_aDSS; +#endif + *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ + *auth |= SSL_aDH; +#ifdef OPENSSL_NO_DH + *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; + *auth |= SSL_aDH; +#endif +#ifdef OPENSSL_NO_KRB5 + *mkey |= SSL_kKRB5; + *auth |= SSL_aKRB5; +#endif +#ifdef OPENSSL_NO_ECDSA + *auth |= SSL_aECDSA; +#endif +#ifdef OPENSSL_NO_ECDH + *mkey |= SSL_kECDHe|SSL_kECDHr; + *auth |= SSL_aECDH; +#endif +#ifdef OPENSSL_NO_PSK + *mkey |= SSL_kPSK; + *auth |= SSL_aPSK; +#endif + /* Check for presence of GOST 34.10 algorithms, and if they + * do not present, disable appropriate auth and key exchange */ + if (!get_optional_pkey_id("gost94")) { + *auth |= SSL_aGOST94; + } + if (!get_optional_pkey_id("gost2001")) { + *auth |= SSL_aGOST01; + } + /* Disable GOST key exchange if no GOST signature algs are available * */ + if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { + *mkey |= SSL_kGOST; + } +#ifdef SSL_FORBID_ENULL + *enc |= SSL_eNULL; +#endif + + + + *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; + *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; + *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; + *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; + *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; + *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; + *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; + *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; + *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; + *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; + *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; + + *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; + *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; + *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; + *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; + + } + +static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, + int num_of_ciphers, + unsigned long disabled_mkey, unsigned long disabled_auth, + unsigned long disabled_enc, unsigned long disabled_mac, + unsigned long disabled_ssl, + CIPHER_ORDER *co_list, + CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) + { + int i, co_list_num; + const SSL_CIPHER *c; + + /* + * We have num_of_ciphers descriptions compiled in, depending on the + * method selected (SSLv2 and/or SSLv3, TLSv1 etc). + * These will later be sorted in a linked list with at most num + * entries. + */ + + /* Get the initial list of ciphers */ + co_list_num = 0; /* actual count of ciphers */ + for (i = 0; i < num_of_ciphers; i++) + { + c = ssl_method->get_cipher(i); + /* drop those that use any of that is not available */ + if ((c != NULL) && c->valid && + !(c->algorithm_mkey & disabled_mkey) && + !(c->algorithm_auth & disabled_auth) && + !(c->algorithm_enc & disabled_enc) && + !(c->algorithm_mac & disabled_mac) && + !(c->algorithm_ssl & disabled_ssl)) + { + co_list[co_list_num].cipher = c; + co_list[co_list_num].next = NULL; + co_list[co_list_num].prev = NULL; + co_list[co_list_num].active = 0; + co_list_num++; +#ifdef KSSL_DEBUG + printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); +#endif /* KSSL_DEBUG */ + /* + if (!sk_push(ca_list,(char *)c)) goto err; + */ + } + } + + /* + * Prepare linked list from list entries + */ + if (co_list_num > 0) + { + co_list[0].prev = NULL; + + if (co_list_num > 1) + { + co_list[0].next = &co_list[1]; + + for (i = 1; i < co_list_num - 1; i++) + { + co_list[i].prev = &co_list[i - 1]; + co_list[i].next = &co_list[i + 1]; + } + + co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; + } + + co_list[co_list_num - 1].next = NULL; + + *head_p = &co_list[0]; + *tail_p = &co_list[co_list_num - 1]; + } + } + +static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, + int num_of_group_aliases, + unsigned long disabled_mkey, unsigned long disabled_auth, + unsigned long disabled_enc, unsigned long disabled_mac, + unsigned long disabled_ssl, + CIPHER_ORDER *head) + { + CIPHER_ORDER *ciph_curr; + const SSL_CIPHER **ca_curr; + int i; + unsigned long mask_mkey = ~disabled_mkey; + unsigned long mask_auth = ~disabled_auth; + unsigned long mask_enc = ~disabled_enc; + unsigned long mask_mac = ~disabled_mac; + unsigned long mask_ssl = ~disabled_ssl; + + /* + * First, add the real ciphers as already collected + */ + ciph_curr = head; + ca_curr = ca_list; + while (ciph_curr != NULL) + { + *ca_curr = ciph_curr->cipher; + ca_curr++; + ciph_curr = ciph_curr->next; + } + + /* + * Now we add the available ones from the cipher_aliases[] table. + * They represent either one or more algorithms, some of which + * in any affected category must be supported (set in enabled_mask), + * or represent a cipher strength value (will be added in any case because algorithms=0). + */ + for (i = 0; i < num_of_group_aliases; i++) + { + unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; + unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; + unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; + unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; + unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; + + if (algorithm_mkey) + if ((algorithm_mkey & mask_mkey) == 0) + continue; + + if (algorithm_auth) + if ((algorithm_auth & mask_auth) == 0) + continue; + + if (algorithm_enc) + if ((algorithm_enc & mask_enc) == 0) + continue; + + if (algorithm_mac) + if ((algorithm_mac & mask_mac) == 0) + continue; + + if (algorithm_ssl) + if ((algorithm_ssl & mask_ssl) == 0) + continue; + + *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); + ca_curr++; + } + + *ca_curr = NULL; /* end of list */ + } + +static void ssl_cipher_apply_rule(unsigned long cipher_id, + unsigned long alg_mkey, unsigned long alg_auth, + unsigned long alg_enc, unsigned long alg_mac, + unsigned long alg_ssl, + unsigned long algo_strength, + int rule, int strength_bits, + CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) + { + CIPHER_ORDER *head, *tail, *curr, *curr2, *last; + const SSL_CIPHER *cp; + int reverse = 0; + +#ifdef CIPHER_DEBUG + printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", + rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); +#endif + + if (rule == CIPHER_DEL) + reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ + + head = *head_p; + tail = *tail_p; + + if (reverse) + { + curr = tail; + last = head; + } + else + { + curr = head; + last = tail; + } + + curr2 = curr; + for (;;) + { + if ((curr == NULL) || (curr == last)) break; + curr = curr2; + curr2 = reverse ? curr->prev : curr->next; + + cp = curr->cipher; + + /* + * Selection criteria is either the value of strength_bits + * or the algorithms used. + */ + if (strength_bits >= 0) + { + if (strength_bits != cp->strength_bits) + continue; + } + else + { +#ifdef CIPHER_DEBUG + printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength); +#endif + + if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) + continue; + if (alg_auth && !(alg_auth & cp->algorithm_auth)) + continue; + if (alg_enc && !(alg_enc & cp->algorithm_enc)) + continue; + if (alg_mac && !(alg_mac & cp->algorithm_mac)) + continue; + if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) + continue; + if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) + continue; + if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) + continue; + } + +#ifdef CIPHER_DEBUG + printf("Action = %d\n", rule); +#endif + + /* add the cipher if it has not been added yet. */ + if (rule == CIPHER_ADD) + { + /* reverse == 0 */ + if (!curr->active) + { + ll_append_tail(&head, curr, &tail); + curr->active = 1; + } + } + /* Move the added cipher to this location */ + else if (rule == CIPHER_ORD) + { + /* reverse == 0 */ + if (curr->active) + { + ll_append_tail(&head, curr, &tail); + } + } + else if (rule == CIPHER_DEL) + { + /* reverse == 1 */ + if (curr->active) + { + /* most recently deleted ciphersuites get best positions + * for any future CIPHER_ADD (note that the CIPHER_DEL loop + * works in reverse to maintain the order) */ + ll_append_head(&head, curr, &tail); + curr->active = 0; + } + } + else if (rule == CIPHER_KILL) + { + /* reverse == 0 */ + if (head == curr) + head = curr->next; + else + curr->prev->next = curr->next; + if (tail == curr) + tail = curr->prev; + curr->active = 0; + if (curr->next != NULL) + curr->next->prev = curr->prev; + if (curr->prev != NULL) + curr->prev->next = curr->next; + curr->next = NULL; + curr->prev = NULL; + } + } + + *head_p = head; + *tail_p = tail; + } + +static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, + CIPHER_ORDER **tail_p) + { + int max_strength_bits, i, *number_uses; + CIPHER_ORDER *curr; + + /* + * This routine sorts the ciphers with descending strength. The sorting + * must keep the pre-sorted sequence, so we apply the normal sorting + * routine as '+' movement to the end of the list. + */ + max_strength_bits = 0; + curr = *head_p; + while (curr != NULL) + { + if (curr->active && + (curr->cipher->strength_bits > max_strength_bits)) + max_strength_bits = curr->cipher->strength_bits; + curr = curr->next; + } + + number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); + if (!number_uses) + { + SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); + return(0); + } + memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); + + /* + * Now find the strength_bits values actually used + */ + curr = *head_p; + while (curr != NULL) + { + if (curr->active) + number_uses[curr->cipher->strength_bits]++; + curr = curr->next; + } + /* + * Go through the list of used strength_bits values in descending + * order. + */ + for (i = max_strength_bits; i >= 0; i--) + if (number_uses[i] > 0) + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); + + OPENSSL_free(number_uses); + return(1); + } + +static int ssl_cipher_process_rulestr(const char *rule_str, + CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, + const SSL_CIPHER **ca_list) + { + unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; + const char *l, *buf; + int j, multi, found, rule, retval, ok, buflen; + unsigned long cipher_id = 0; + char ch; + + retval = 1; + l = rule_str; + for (;;) + { + ch = *l; + + if (ch == '\0') + break; /* done */ + if (ch == '-') + { rule = CIPHER_DEL; l++; } + else if (ch == '+') + { rule = CIPHER_ORD; l++; } + else if (ch == '!') + { rule = CIPHER_KILL; l++; } + else if (ch == '@') + { rule = CIPHER_SPECIAL; l++; } + else + { rule = CIPHER_ADD; } + + if (ITEM_SEP(ch)) + { + l++; + continue; + } + + alg_mkey = 0; + alg_auth = 0; + alg_enc = 0; + alg_mac = 0; + alg_ssl = 0; + algo_strength = 0; + + for (;;) + { + ch = *l; + buf = l; + buflen = 0; +#ifndef CHARSET_EBCDIC + while ( ((ch >= 'A') && (ch <= 'Z')) || + ((ch >= '0') && (ch <= '9')) || + ((ch >= 'a') && (ch <= 'z')) || + (ch == '-')) +#else + while ( isalnum(ch) || (ch == '-')) +#endif + { + ch = *(++l); + buflen++; + } + + if (buflen == 0) + { + /* + * We hit something we cannot deal with, + * it is no command or separator nor + * alphanumeric, so we call this an error. + */ + SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, + SSL_R_INVALID_COMMAND); + retval = found = 0; + l++; + break; + } + + if (rule == CIPHER_SPECIAL) + { + found = 0; /* unused -- avoid compiler warning */ + break; /* special treatment */ + } + + /* check for multi-part specification */ + if (ch == '+') + { + multi=1; + l++; + } + else + multi=0; + + /* + * Now search for the cipher alias in the ca_list. Be careful + * with the strncmp, because the "buflen" limitation + * will make the rule "ADH:SOME" and the cipher + * "ADH-MY-CIPHER" look like a match for buflen=3. + * So additionally check whether the cipher name found + * has the correct length. We can save a strlen() call: + * just checking for the '\0' at the right place is + * sufficient, we have to strncmp() anyway. (We cannot + * use strcmp(), because buf is not '\0' terminated.) + */ + j = found = 0; + cipher_id = 0; + while (ca_list[j]) + { + if (!strncmp(buf, ca_list[j]->name, buflen) && + (ca_list[j]->name[buflen] == '\0')) + { + found = 1; + break; + } + else + j++; + } + + if (!found) + break; /* ignore this entry */ + + if (ca_list[j]->algorithm_mkey) + { + if (alg_mkey) + { + alg_mkey &= ca_list[j]->algorithm_mkey; + if (!alg_mkey) { found = 0; break; } + } + else + alg_mkey = ca_list[j]->algorithm_mkey; + } + + if (ca_list[j]->algorithm_auth) + { + if (alg_auth) + { + alg_auth &= ca_list[j]->algorithm_auth; + if (!alg_auth) { found = 0; break; } + } + else + alg_auth = ca_list[j]->algorithm_auth; + } + + if (ca_list[j]->algorithm_enc) + { + if (alg_enc) + { + alg_enc &= ca_list[j]->algorithm_enc; + if (!alg_enc) { found = 0; break; } + } + else + alg_enc = ca_list[j]->algorithm_enc; + } + + if (ca_list[j]->algorithm_mac) + { + if (alg_mac) + { + alg_mac &= ca_list[j]->algorithm_mac; + if (!alg_mac) { found = 0; break; } + } + else + alg_mac = ca_list[j]->algorithm_mac; + } + + if (ca_list[j]->algo_strength & SSL_EXP_MASK) + { + if (algo_strength & SSL_EXP_MASK) + { + algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; + if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } + } + else + algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; + } + + if (ca_list[j]->algo_strength & SSL_STRONG_MASK) + { + if (algo_strength & SSL_STRONG_MASK) + { + algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; + if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } + } + else + algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; + } + + if (ca_list[j]->valid) + { + /* explicit ciphersuite found; its protocol version + * does not become part of the search pattern!*/ + + cipher_id = ca_list[j]->id; + } + else + { + /* not an explicit ciphersuite; only in this case, the + * protocol version is considered part of the search pattern */ + + if (ca_list[j]->algorithm_ssl) + { + if (alg_ssl) + { + alg_ssl &= ca_list[j]->algorithm_ssl; + if (!alg_ssl) { found = 0; break; } + } + else + alg_ssl = ca_list[j]->algorithm_ssl; + } + } + + if (!multi) break; + } + + /* + * Ok, we have the rule, now apply it + */ + if (rule == CIPHER_SPECIAL) + { /* special command */ + ok = 0; + if ((buflen == 8) && + !strncmp(buf, "STRENGTH", 8)) + ok = ssl_cipher_strength_sort(head_p, tail_p); + else + SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, + SSL_R_INVALID_COMMAND); + if (ok == 0) + retval = 0; + /* + * We do not support any "multi" options + * together with "@", so throw away the + * rest of the command, if any left, until + * end or ':' is found. + */ + while ((*l != '\0') && !ITEM_SEP(*l)) + l++; + } + else if (found) + { + ssl_cipher_apply_rule(cipher_id, + alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, + rule, -1, head_p, tail_p); + } + else + { + while ((*l != '\0') && !ITEM_SEP(*l)) + l++; + } + if (*l == '\0') break; /* done */ + } + + return(retval); + } + +STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, + STACK_OF(SSL_CIPHER) **cipher_list, + STACK_OF(SSL_CIPHER) **cipher_list_by_id, + const char *rule_str) + { + int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; + unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; + STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; + const char *rule_p; + CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; + const SSL_CIPHER **ca_list = NULL; + + /* + * Return with error if nothing to do. + */ + if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) + return NULL; + + /* + * To reduce the work to do we only want to process the compiled + * in algorithms, so we first get the mask of disabled ciphers. + */ + ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); + + /* + * Now we have to collect the available ciphers from the compiled + * in ciphers. We cannot get more than the number compiled in, so + * it is used for allocation. + */ + num_of_ciphers = ssl_method->num_ciphers(); +#ifdef KSSL_DEBUG + printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); +#endif /* KSSL_DEBUG */ + co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); + if (co_list == NULL) + { + SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); + return(NULL); /* Failure */ + } + + ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, + disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, + co_list, &head, &tail); + + + /* Now arrange all ciphers by preference: */ + + /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ + ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); + ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); + + /* AES is our preferred symmetric cipher */ + ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); + + /* Temporarily enable everything else for sorting */ + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); + + /* Low priority for MD5 */ + ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* Move anonymous ciphers to the end. Usually, these will remain disabled. + * (For applications that allow them, they aren't too bad, but we prefer + * authenticated ciphers.) */ + ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* Move ciphers without forward secrecy to the end */ + ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ + ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* RC4 is sort-of broken -- move the the end */ + ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); + + /* Now sort by symmetric encryption strength. The above ordering remains + * in force within each class */ + if (!ssl_cipher_strength_sort(&head, &tail)) + { + OPENSSL_free(co_list); + return NULL; + } + + /* Now disable everything (maintaining the ordering!) */ + ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); + + + /* + * We also need cipher aliases for selecting based on the rule_str. + * There might be two types of entries in the rule_str: 1) names + * of ciphers themselves 2) aliases for groups of ciphers. + * For 1) we need the available ciphers and for 2) the cipher + * groups of cipher_aliases added together in one list (otherwise + * we would be happy with just the cipher_aliases table). + */ + num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); + num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; + ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); + if (ca_list == NULL) + { + OPENSSL_free(co_list); + SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); + return(NULL); /* Failure */ + } + ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, + disabled_mkey, disabled_auth, disabled_enc, + disabled_mac, disabled_ssl, head); + + /* + * If the rule_string begins with DEFAULT, apply the default rule + * before using the (possibly available) additional rules. + */ + ok = 1; + rule_p = rule_str; + if (strncmp(rule_str,"DEFAULT",7) == 0) + { + ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, + &head, &tail, ca_list); + rule_p += 7; + if (*rule_p == ':') + rule_p++; + } + + if (ok && (strlen(rule_p) > 0)) + ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); + + OPENSSL_free((void *)ca_list); /* Not needed anymore */ + + if (!ok) + { /* Rule processing failure */ + OPENSSL_free(co_list); + return(NULL); + } + + /* + * Allocate new "cipherstack" for the result, return with error + * if we cannot get one. + */ + if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) + { + OPENSSL_free(co_list); + return(NULL); + } + + /* + * The cipher selection for the list is done. The ciphers are added + * to the resulting precedence to the STACK_OF(SSL_CIPHER). + */ + for (curr = head; curr != NULL; curr = curr->next) + { + if (curr->active) + { + sk_SSL_CIPHER_push(cipherstack, curr->cipher); +#ifdef CIPHER_DEBUG + printf("<%s>\n",curr->cipher->name); +#endif + } + } + OPENSSL_free(co_list); /* Not needed any longer */ + + tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); + if (tmp_cipher_list == NULL) + { + sk_SSL_CIPHER_free(cipherstack); + return NULL; + } + if (*cipher_list != NULL) + sk_SSL_CIPHER_free(*cipher_list); + *cipher_list = cipherstack; + if (*cipher_list_by_id != NULL) + sk_SSL_CIPHER_free(*cipher_list_by_id); + *cipher_list_by_id = tmp_cipher_list; + (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); + + sk_SSL_CIPHER_sort(*cipher_list_by_id); + return(cipherstack); + } + +char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) + { + int is_export,pkl,kl; + const char *ver,*exp_str; + const char *kx,*au,*enc,*mac; + unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; +#ifdef KSSL_DEBUG + static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; +#else + static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; +#endif /* KSSL_DEBUG */ + + alg_mkey = cipher->algorithm_mkey; + alg_auth = cipher->algorithm_auth; + alg_enc = cipher->algorithm_enc; + alg_mac = cipher->algorithm_mac; + alg_ssl = cipher->algorithm_ssl; + + alg2=cipher->algorithm2; + + is_export=SSL_C_IS_EXPORT(cipher); + pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); + kl=SSL_C_EXPORT_KEYLENGTH(cipher); + exp_str=is_export?" export":""; + + if (alg_ssl & SSL_SSLV2) + ver="SSLv2"; + else if (alg_ssl & SSL_SSLV3) + ver="SSLv3"; + else + ver="unknown"; + + switch (alg_mkey) + { + case SSL_kRSA: + kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; + break; + case SSL_kDHr: + kx="DH/RSA"; + break; + case SSL_kDHd: + kx="DH/DSS"; + break; + case SSL_kKRB5: + kx="KRB5"; + break; + case SSL_kEDH: + kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; + break; + case SSL_kECDHr: + kx="ECDH/RSA"; + break; + case SSL_kECDHe: + kx="ECDH/ECDSA"; + break; + case SSL_kEECDH: + kx="ECDH"; + break; + case SSL_kPSK: + kx="PSK"; + break; + default: + kx="unknown"; + } + + switch (alg_auth) + { + case SSL_aRSA: + au="RSA"; + break; + case SSL_aDSS: + au="DSS"; + break; + case SSL_aDH: + au="DH"; + break; + case SSL_aKRB5: + au="KRB5"; + break; + case SSL_aECDH: + au="ECDH"; + break; + case SSL_aNULL: + au="None"; + break; + case SSL_aECDSA: + au="ECDSA"; + break; + case SSL_aPSK: + au="PSK"; + break; + default: + au="unknown"; + break; + } + + switch (alg_enc) + { + case SSL_DES: + enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; + break; + case SSL_3DES: + enc="3DES(168)"; + break; + case SSL_RC4: + enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") + :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); + break; + case SSL_RC2: + enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; + break; + case SSL_IDEA: + enc="IDEA(128)"; + break; + case SSL_eNULL: + enc="None"; + break; + case SSL_AES128: + enc="AES(128)"; + break; + case SSL_AES256: + enc="AES(256)"; + break; + case SSL_CAMELLIA128: + enc="Camellia(128)"; + break; + case SSL_CAMELLIA256: + enc="Camellia(256)"; + break; + case SSL_SEED: + enc="SEED(128)"; + break; + default: + enc="unknown"; + break; + } + + switch (alg_mac) + { + case SSL_MD5: + mac="MD5"; + break; + case SSL_SHA1: + mac="SHA1"; + break; + default: + mac="unknown"; + break; + } + + if (buf == NULL) + { + len=128; + buf=OPENSSL_malloc(len); + if (buf == NULL) return("OPENSSL_malloc Error"); + } + else if (len < 128) + return("Buffer too small"); + +#ifdef KSSL_DEBUG + BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); +#else + BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); +#endif /* KSSL_DEBUG */ + return(buf); + } + +char *SSL_CIPHER_get_version(const SSL_CIPHER *c) + { + int i; + + if (c == NULL) return("(NONE)"); + i=(int)(c->id>>24L); + if (i == 3) + return("TLSv1/SSLv3"); + else if (i == 2) + return("SSLv2"); + else + return("unknown"); + } + +/* return the actual cipher being used */ +const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) + { + if (c != NULL) + return(c->name); + return("(NONE)"); + } + +/* number of bits for symmetric cipher */ +int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) + { + int ret=0; + + if (c != NULL) + { + if (alg_bits != NULL) *alg_bits = c->alg_bits; + ret = c->strength_bits; + } + return(ret); + } + +/* return string version of key exchange algorithm */ +const char* SSL_CIPHER_authentication_method(const SSL_CIPHER* cipher) + { + switch (cipher->algorithm_mkey) + { + case SSL_kRSA: + return SSL_TXT_RSA; + case SSL_kDHr: + return SSL_TXT_DH "_" SSL_TXT_RSA; + case SSL_kDHd: + return SSL_TXT_DH "_" SSL_TXT_DSS; + case SSL_kEDH: + switch (cipher->algorithm_auth) + { + case SSL_aDSS: + return "DHE_" SSL_TXT_DSS; + case SSL_aRSA: + return "DHE_" SSL_TXT_RSA; + case SSL_aNULL: + return SSL_TXT_DH "_anon"; + default: + return "UNKNOWN"; + } + case SSL_kKRB5: + return SSL_TXT_KRB5; + case SSL_kECDHr: + return SSL_TXT_ECDH "_" SSL_TXT_RSA; + case SSL_kECDHe: + return SSL_TXT_ECDH "_" SSL_TXT_ECDSA; + case SSL_kEECDH: + switch (cipher->algorithm_auth) + { + case SSL_aECDSA: + return "ECDHE_" SSL_TXT_ECDSA; + case SSL_aRSA: + return "ECDHE_" SSL_TXT_RSA; + case SSL_aNULL: + return SSL_TXT_ECDH "_anon"; + default: + return "UNKNOWN"; + } + default: + return "UNKNOWN"; + } + } + +SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) + { + SSL_COMP *ctmp; + int i,nn; + + if ((n == 0) || (sk == NULL)) return(NULL); + nn=sk_SSL_COMP_num(sk); + for (i=0; iid == n) + return(ctmp); + } + return(NULL); + } + +#ifdef OPENSSL_NO_COMP +void *SSL_COMP_get_compression_methods(void) + { + return NULL; + } +int SSL_COMP_add_compression_method(int id, void *cm) + { + return 1; + } + +const char *SSL_COMP_get_name(const void *comp) + { + return NULL; + } +#else +STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) + { + load_builtin_compressions(); + return(ssl_comp_methods); + } + +int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) + { + SSL_COMP *comp; + + if (cm == NULL || cm->type == NID_undef) + return 1; + + /* According to draft-ietf-tls-compression-04.txt, the + compression number ranges should be the following: + + 0 to 63: methods defined by the IETF + 64 to 192: external party methods assigned by IANA + 193 to 255: reserved for private use */ + if (id < 193 || id > 255) + { + SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); + return 0; + } + + MemCheck_off(); + comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); + comp->id=id; + comp->method=cm; + load_builtin_compressions(); + if (ssl_comp_methods + && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) + { + OPENSSL_free(comp); + MemCheck_on(); + SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); + return(1); + } + else if ((ssl_comp_methods == NULL) + || !sk_SSL_COMP_push(ssl_comp_methods,comp)) + { + OPENSSL_free(comp); + MemCheck_on(); + SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); + return(1); + } + else + { + MemCheck_on(); + return(0); + } + } + +const char *SSL_COMP_get_name(const COMP_METHOD *comp) + { + if (comp) + return comp->name; + return NULL; + } + +#endif -- cgit v1.2.3