X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs2_lib.c;h=99146041091087eb2757c316b773be8fc3725c88;hp=cc0dcfa95685d1e1ed089b60639b18ab4b9e4e5e;hb=d0666f289ac013094bbbf547bfbcd616199b7d2d;hpb=db4f691f9f4a077cf26822bef7c72fb0499d5823 diff --git a/ssl/s2_lib.c b/ssl/s2_lib.c index cc0dcfa956..9914604109 100644 --- a/ssl/s2_lib.c +++ b/ssl/s2_lib.c @@ -55,206 +55,255 @@ * 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). + * + */ #include "ssl_locl.h" #ifndef OPENSSL_NO_SSL2 #include -#include #include #include #include -#include "cryptlib.h" -static long ssl2_default_timeout(void ); -const char *ssl2_version_str="SSLv2" OPENSSL_VERSION_PTEXT; +const char ssl2_version_str[]="SSLv2" OPENSSL_VERSION_PTEXT; #define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER)) -OPENSSL_GLOBAL SSL_CIPHER ssl2_ciphers[]={ -/* NULL_WITH_MD5 v3 */ +/* list of available SSLv2 ciphers (sorted by id) */ +OPENSSL_GLOBAL const SSL_CIPHER ssl2_ciphers[]={ #if 0 +/* NULL_WITH_MD5 v3 */ { 1, SSL2_TXT_NULL_WITH_MD5, SSL2_CK_NULL_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_eNULL|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_eNULL, + SSL_MD5, + SSL_SSLV2, SSL_EXPORT|SSL_EXP40|SSL_STRONG_NONE, 0, 0, 0, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, #endif -/* RC4_128_EXPORT40_WITH_MD5 */ - { - 1, - SSL2_TXT_RC4_128_EXPORT40_WITH_MD5, - SSL2_CK_RC4_128_EXPORT40_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_SSLV2, - SSL_EXPORT|SSL_EXP40, - SSL2_CF_5_BYTE_ENC, - 40, - 128, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, - }, + /* RC4_128_WITH_MD5 */ { 1, SSL2_TXT_RC4_128_WITH_MD5, SSL2_CK_RC4_128_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_RC4, + SSL_MD5, + SSL_SSLV2, SSL_NOT_EXP|SSL_MEDIUM, 0, 128, 128, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, -/* RC2_128_CBC_EXPORT40_WITH_MD5 */ + +/* RC4_128_EXPORT40_WITH_MD5 */ { 1, - SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5, - SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_SSLV2, + SSL2_TXT_RC4_128_EXPORT40_WITH_MD5, + SSL2_CK_RC4_128_EXPORT40_WITH_MD5, + SSL_kRSA, + SSL_aRSA, + SSL_RC4, + SSL_MD5, + SSL_SSLV2, SSL_EXPORT|SSL_EXP40, SSL2_CF_5_BYTE_ENC, 40, 128, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, + /* RC2_128_CBC_WITH_MD5 */ { 1, SSL2_TXT_RC2_128_CBC_WITH_MD5, SSL2_CK_RC2_128_CBC_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_RC2, + SSL_MD5, + SSL_SSLV2, SSL_NOT_EXP|SSL_MEDIUM, 0, 128, 128, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, + +/* RC2_128_CBC_EXPORT40_WITH_MD5 */ + { + 1, + SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5, + SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5, + SSL_kRSA, + SSL_aRSA, + SSL_RC2, + SSL_MD5, + SSL_SSLV2, + SSL_EXPORT|SSL_EXP40, + SSL2_CF_5_BYTE_ENC, + 40, + 128, + }, + +#ifndef OPENSSL_NO_IDEA /* IDEA_128_CBC_WITH_MD5 */ { 1, SSL2_TXT_IDEA_128_CBC_WITH_MD5, SSL2_CK_IDEA_128_CBC_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_IDEA|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_IDEA, + SSL_MD5, + SSL_SSLV2, SSL_NOT_EXP|SSL_MEDIUM, 0, 128, 128, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, +#endif + /* DES_64_CBC_WITH_MD5 */ { 1, SSL2_TXT_DES_64_CBC_WITH_MD5, SSL2_CK_DES_64_CBC_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_DES|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_DES, + SSL_MD5, + SSL_SSLV2, SSL_NOT_EXP|SSL_LOW, 0, 56, 56, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, + /* DES_192_EDE3_CBC_WITH_MD5 */ { 1, SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5, SSL2_CK_DES_192_EDE3_CBC_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_3DES|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_3DES, + SSL_MD5, + SSL_SSLV2, SSL_NOT_EXP|SSL_HIGH, 0, 168, 168, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, + +#if 0 /* RC4_64_WITH_MD5 */ -#if 1 { 1, SSL2_TXT_RC4_64_WITH_MD5, SSL2_CK_RC4_64_WITH_MD5, - SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_SSLV2, + SSL_kRSA, + SSL_aRSA, + SSL_RC4, + SSL_MD5, + SSL_SSLV2, SSL_NOT_EXP|SSL_LOW, SSL2_CF_8_BYTE_ENC, 64, 64, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, #endif -/* NULL SSLeay (testing) */ + #if 0 +/* NULL SSLeay (testing) */ { 0, SSL2_TXT_NULL, SSL2_CK_NULL, 0, + 0, + 0, + 0, + SSL_SSLV2, SSL_STRONG_NONE, 0, 0, 0, - SSL_ALL_CIPHERS, - SSL_ALL_STRENGTHS, }, #endif /* end of list :-) */ }; -static SSL_METHOD SSLv2_data= { - SSL2_VERSION, - ssl2_new, /* local */ - ssl2_clear, /* local */ - ssl2_free, /* local */ - ssl_undefined_function, - ssl_undefined_function, - ssl2_read, - ssl2_peek, - ssl2_write, - ssl2_shutdown, - ssl_ok, /* NULL - renegotiate */ - ssl_ok, /* NULL - check renegotiate */ - ssl2_ctrl, /* local */ - ssl2_ctx_ctrl, /* local */ - ssl2_get_cipher_by_char, - ssl2_put_cipher_by_char, - ssl2_pending, - ssl2_num_ciphers, - ssl2_get_cipher, - ssl_bad_method, - ssl2_default_timeout, - &ssl3_undef_enc_method, - ssl_undefined_function, - ssl2_callback_ctrl, /* local */ - ssl2_ctx_callback_ctrl, /* local */ - }; - -static long ssl2_default_timeout(void) +long ssl2_default_timeout(void) { return(300); } -SSL_METHOD *sslv2_base_method(void) - { - return(&SSLv2_data); - } - int ssl2_num_ciphers(void) { return(SSL2_NUM_CIPHERS); } -SSL_CIPHER *ssl2_get_cipher(unsigned int u) +const SSL_CIPHER *ssl2_get_cipher(unsigned int u) { if (u < SSL2_NUM_CIPHERS) return(&(ssl2_ciphers[SSL2_NUM_CIPHERS-1-u])); @@ -262,7 +311,7 @@ SSL_CIPHER *ssl2_get_cipher(unsigned int u) return(NULL); } -int ssl2_pending(SSL *s) +int ssl2_pending(const SSL *s) { return SSL_in_init(s) ? 0 : s->s2->ract_data_length; } @@ -308,7 +357,7 @@ void ssl2_free(SSL *s) s2=s->s2; if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf); if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf); - memset(s2,0,sizeof *s2); + OPENSSL_cleanse(s2,sizeof *s2); OPENSSL_free(s2); s->s2=NULL; } @@ -348,7 +397,7 @@ long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg) return(ret); } -long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)()) +long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) { return(0); } @@ -358,47 +407,27 @@ long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) return(0); } -long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)()) +long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) { return(0); } /* This function needs to check if the ciphers required are actually * available */ -SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p) +const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p) { - static int init=1; - static SSL_CIPHER *sorted[SSL2_NUM_CIPHERS]; - SSL_CIPHER c,*cp= &c,**cpp; + SSL_CIPHER c; + const SSL_CIPHER *cp; unsigned long id; - int i; - - if (init) - { - CRYPTO_w_lock(CRYPTO_LOCK_SSL); - - for (i=0; ivalid) - return(NULL); + cp = OBJ_bsearch_ssl_cipher_id(&c, ssl2_ciphers, SSL2_NUM_CIPHERS); + if ((cp == NULL) || (cp->valid == 0)) + return NULL; else - return(*cpp); + return cp; } int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p) @@ -423,6 +452,7 @@ int ssl2_generate_key_material(SSL *s) unsigned char *km; unsigned char c='0'; const EVP_MD *md5; + int md_size; md5 = EVP_md5(); @@ -433,15 +463,19 @@ int ssl2_generate_key_material(SSL *s) EVP_MD_CTX_init(&ctx); km=s->s2->key_material; - if (s->session->master_key_length < 0 || s->session->master_key_length > sizeof s->session->master_key) + if (s->session->master_key_length < 0 || + s->session->master_key_length > (int)sizeof(s->session->master_key)) { SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR); return 0; } - - for (i=0; is2->key_material_length; i += EVP_MD_size(md5)) + md_size = EVP_MD_size(md5); + if (md_size < 0) + return 0; + for (i=0; is2->key_material_length; i += md_size) { - if (((km - s->s2->key_material) + EVP_MD_size(md5)) > sizeof s->s2->key_material) + if (((km - s->s2->key_material) + md_size) > + (int)sizeof(s->s2->key_material)) { /* EVP_DigestFinal_ex() below would write beyond buffer */ SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR); @@ -450,13 +484,16 @@ int ssl2_generate_key_material(SSL *s) EVP_DigestInit_ex(&ctx, md5, NULL); + OPENSSL_assert(s->session->master_key_length >= 0 + && s->session->master_key_length + < (int)sizeof(s->session->master_key)); EVP_DigestUpdate(&ctx,s->session->master_key,s->session->master_key_length); EVP_DigestUpdate(&ctx,&c,1); c++; EVP_DigestUpdate(&ctx,s->s2->challenge,s->s2->challenge_length); EVP_DigestUpdate(&ctx,s->s2->conn_id,s->s2->conn_id_length); EVP_DigestFinal_ex(&ctx,km,NULL); - km += EVP_MD_size(md5); + km += md_size; } EVP_MD_CTX_cleanup(&ctx); @@ -488,9 +525,7 @@ void ssl2_write_error(SSL *s) error=s->error; /* number of bytes left to write */ s->error=0; - if (error < 0 || error > sizeof buf) /* can't happen */ - return; - + OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf)); i=ssl2_write(s,&(buf[3-error]),error); /* if (i == error) s->rwstate=state; */