diff options
Diffstat (limited to 'openssl/ssl/s2_lib.c')
| -rw-r--r-- | openssl/ssl/s2_lib.c | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/openssl/ssl/s2_lib.c b/openssl/ssl/s2_lib.c new file mode 100644 index 000000000..10751b22b --- /dev/null +++ b/openssl/ssl/s2_lib.c @@ -0,0 +1,478 @@ +/* ssl/s2_lib.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.] + */ + +#include "ssl_locl.h" +#ifndef OPENSSL_NO_SSL2 +#include <stdio.h> +#include <openssl/objects.h> +#include <openssl/evp.h> +#include <openssl/md5.h> + +const char ssl2_version_str[]="SSLv2" OPENSSL_VERSION_PTEXT; + +#define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER)) + +/* list of available SSLv2 ciphers (sorted by id) */ +OPENSSL_GLOBAL SSL_CIPHER ssl2_ciphers[]={ +/* NULL_WITH_MD5 v3 */ +#if 0 + { + 1, + SSL2_TXT_NULL_WITH_MD5, + SSL2_CK_NULL_WITH_MD5, + 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_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_NOT_EXP|SSL_MEDIUM, + 0, + 128, + 128, + SSL_ALL_CIPHERS, + SSL_ALL_STRENGTHS, + }, +/* 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, + }, +/* 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_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, + SSL_ALL_CIPHERS, + SSL_ALL_STRENGTHS, + }, +/* IDEA_128_CBC_WITH_MD5 */ +#ifndef OPENSSL_NO_IDEA + { + 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_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_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_NOT_EXP|SSL_HIGH, + 0, + 168, + 168, + SSL_ALL_CIPHERS, + SSL_ALL_STRENGTHS, + }, +/* RC4_64_WITH_MD5 */ +#if 0 + { + 1, + SSL2_TXT_RC4_64_WITH_MD5, + SSL2_CK_RC4_64_WITH_MD5, + 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 + { + 0, + SSL2_TXT_NULL, + SSL2_CK_NULL, + 0, + SSL_STRONG_NONE, + 0, + 0, + 0, + SSL_ALL_CIPHERS, + SSL_ALL_STRENGTHS, + }, +#endif + +/* end of list :-) */ + }; + +long ssl2_default_timeout(void) + { + return(300); + } + +IMPLEMENT_ssl2_meth_func(sslv2_base_method, + ssl_undefined_function, + ssl_undefined_function, + ssl_bad_method) + +int ssl2_num_ciphers(void) + { + return(SSL2_NUM_CIPHERS); + } + +SSL_CIPHER *ssl2_get_cipher(unsigned int u) + { + if (u < SSL2_NUM_CIPHERS) + return(&(ssl2_ciphers[SSL2_NUM_CIPHERS-1-u])); + else + return(NULL); + } + +int ssl2_pending(const SSL *s) + { + return SSL_in_init(s) ? 0 : s->s2->ract_data_length; + } + +int ssl2_new(SSL *s) + { + SSL2_STATE *s2; + + if ((s2=OPENSSL_malloc(sizeof *s2)) == NULL) goto err; + memset(s2,0,sizeof *s2); + +#if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2 +# error "assertion failed" +#endif + + if ((s2->rbuf=OPENSSL_malloc( + SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2)) == NULL) goto err; + /* wbuf needs one byte more because when using two-byte headers, + * we leave the first byte unused in do_ssl_write (s2_pkt.c) */ + if ((s2->wbuf=OPENSSL_malloc( + SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+3)) == NULL) goto err; + s->s2=s2; + + ssl2_clear(s); + return(1); +err: + if (s2 != NULL) + { + if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf); + if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf); + OPENSSL_free(s2); + } + return(0); + } + +void ssl2_free(SSL *s) + { + SSL2_STATE *s2; + + if(s == NULL) + return; + + s2=s->s2; + if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf); + if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf); + OPENSSL_cleanse(s2,sizeof *s2); + OPENSSL_free(s2); + s->s2=NULL; + } + +void ssl2_clear(SSL *s) + { + SSL2_STATE *s2; + unsigned char *rbuf,*wbuf; + + s2=s->s2; + + rbuf=s2->rbuf; + wbuf=s2->wbuf; + + memset(s2,0,sizeof *s2); + + s2->rbuf=rbuf; + s2->wbuf=wbuf; + s2->clear_text=1; + s->packet=s2->rbuf; + s->version=SSL2_VERSION; + s->packet_length=0; + } + +long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg) + { + int ret=0; + + switch(cmd) + { + case SSL_CTRL_GET_SESSION_REUSED: + ret=s->hit; + break; + default: + break; + } + return(ret); + } + +long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) + { + return(0); + } + +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)(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) + { + SSL_CIPHER c,*cp; + unsigned long id; + + id=0x02000000L|((unsigned long)p[0]<<16L)| + ((unsigned long)p[1]<<8L)|(unsigned long)p[2]; + c.id=id; + cp = (SSL_CIPHER *)OBJ_bsearch((char *)&c, + (char *)ssl2_ciphers, + SSL2_NUM_CIPHERS,sizeof(SSL_CIPHER), + FP_ICC ssl_cipher_id_cmp); + if ((cp == NULL) || (cp->valid == 0)) + return NULL; + else + return cp; + } + +int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p) + { + long l; + + if (p != NULL) + { + l=c->id; + if ((l & 0xff000000) != 0x02000000) return(0); + p[0]=((unsigned char)(l>>16L))&0xFF; + p[1]=((unsigned char)(l>> 8L))&0xFF; + p[2]=((unsigned char)(l ))&0xFF; + } + return(3); + } + +int ssl2_generate_key_material(SSL *s) + { + unsigned int i; + EVP_MD_CTX ctx; + unsigned char *km; + unsigned char c='0'; + const EVP_MD *md5; + + md5 = EVP_md5(); + +#ifdef CHARSET_EBCDIC + c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0', + see SSLv2 docu */ +#endif + EVP_MD_CTX_init(&ctx); + km=s->s2->key_material; + + 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; i<s->s2->key_material_length; i += EVP_MD_size(md5)) + { + if (((km - s->s2->key_material) + EVP_MD_size(md5)) > + (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); + return 0; + } + + 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); + } + + EVP_MD_CTX_cleanup(&ctx); + return 1; + } + +void ssl2_return_error(SSL *s, int err) + { + if (!s->error) + { + s->error=3; + s->error_code=err; + + ssl2_write_error(s); + } + } + + +void ssl2_write_error(SSL *s) + { + unsigned char buf[3]; + int i,error; + + buf[0]=SSL2_MT_ERROR; + buf[1]=(s->error_code>>8)&0xff; + buf[2]=(s->error_code)&0xff; + +/* state=s->rwstate;*/ + + error=s->error; /* number of bytes left to write */ + s->error=0; + OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf)); + i=ssl2_write(s,&(buf[3-error]),error); + +/* if (i == error) s->rwstate=state; */ + + if (i < 0) + s->error=error; + else + { + s->error=error-i; + + if (s->error == 0) + if (s->msg_callback) + s->msg_callback(1, s->version, 0, buf, 3, s, s->msg_callback_arg); /* ERROR */ + } + } + +int ssl2_shutdown(SSL *s) + { + s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN); + return(1); + } +#else /* !OPENSSL_NO_SSL2 */ + +# if PEDANTIC +static void *dummy=&dummy; +# endif + +#endif |