500 lines
18 KiB
C
500 lines
18 KiB
C
/* ssl/ssl_locl.h */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#ifndef HEADER_SSL_LOCL_H
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#define HEADER_SSL_LOCL_H
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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#include <errno.h>
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#include "openssl/e_os.h"
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#include <openssl/buffer.h>
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#include <openssl/comp.h>
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#include <openssl/bio.h>
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#include <openssl/crypto.h>
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#include <openssl/evp.h>
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#include <openssl/stack.h>
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#include <openssl/x509.h>
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#include <openssl/err.h>
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#include <openssl/ssl.h>
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#define PKCS1_CHECK
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#define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
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l|=(((unsigned long)(*((c)++)))<< 8), \
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l|=(((unsigned long)(*((c)++)))<<16), \
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l|=(((unsigned long)(*((c)++)))<<24))
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/* NOTE - c is not incremented as per c2l */
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#define c2ln(c,l1,l2,n) { \
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c+=n; \
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l1=l2=0; \
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switch (n) { \
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case 8: l2 =((unsigned long)(*(--(c))))<<24; \
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case 7: l2|=((unsigned long)(*(--(c))))<<16; \
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case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
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case 5: l2|=((unsigned long)(*(--(c)))); \
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case 4: l1 =((unsigned long)(*(--(c))))<<24; \
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case 3: l1|=((unsigned long)(*(--(c))))<<16; \
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case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
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case 1: l1|=((unsigned long)(*(--(c)))); \
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} \
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}
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#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
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*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
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*((c)++)=(unsigned char)(((l)>>16)&0xff), \
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*((c)++)=(unsigned char)(((l)>>24)&0xff))
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#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
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l|=((unsigned long)(*((c)++)))<<16, \
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l|=((unsigned long)(*((c)++)))<< 8, \
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l|=((unsigned long)(*((c)++))))
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#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
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*((c)++)=(unsigned char)(((l)>>16)&0xff), \
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*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
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*((c)++)=(unsigned char)(((l) )&0xff))
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/* NOTE - c is not incremented as per l2c */
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#define l2cn(l1,l2,c,n) { \
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c+=n; \
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switch (n) { \
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case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
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case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
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case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
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case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
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case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
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case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
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case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
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case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
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} \
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}
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#define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
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(((unsigned int)(c[1])) )),c+=2)
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#define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
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c[1]=(unsigned char)(((s) )&0xff)),c+=2)
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#define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
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(((unsigned long)(c[1]))<< 8)| \
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(((unsigned long)(c[2])) )),c+=3)
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#define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
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c[1]=(unsigned char)(((l)>> 8)&0xff), \
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c[2]=(unsigned char)(((l) )&0xff)),c+=3)
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/* LOCAL STUFF */
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#define SSL_DECRYPT 0
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#define SSL_ENCRYPT 1
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#define TWO_BYTE_BIT 0x80
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#define SEC_ESC_BIT 0x40
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#define TWO_BYTE_MASK 0x7fff
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#define THREE_BYTE_MASK 0x3fff
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#define INC32(a) ((a)=((a)+1)&0xffffffffL)
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#define DEC32(a) ((a)=((a)-1)&0xffffffffL)
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#define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
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#define SSL_MKEY_MASK 0x0000001FL
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#define SSL_kRSA 0x00000001L /* RSA key exchange */
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#define SSL_kDHr 0x00000002L /* DH cert RSA CA cert */
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#define SSL_kDHd 0x00000004L /* DH cert DSA CA cert */
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#define SSL_kFZA 0x00000008L
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#define SSL_kEDH 0x00000010L /* tmp DH key no DH cert */
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#define SSL_EDH (SSL_kEDH|(SSL_AUTH_MASK^SSL_aNULL))
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#define SSL_AUTH_MASK 0x000003e0L
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#define SSL_aRSA 0x00000020L /* Authenticate with RSA */
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#define SSL_aDSS 0x00000040L /* Authenticate with DSS */
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#define SSL_DSS SSL_aDSS
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#define SSL_aFZA 0x00000080L
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#define SSL_aNULL 0x00000100L /* no Authenticate, ADH */
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#define SSL_aDH 0x00000200L /* no Authenticate, ADH */
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#define SSL_NULL (SSL_eNULL)
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#define SSL_ADH (SSL_kEDH|SSL_aNULL)
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#define SSL_RSA (SSL_kRSA|SSL_aRSA)
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#define SSL_DH (SSL_kDHr|SSL_kDHd|SSL_kEDH)
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#define SSL_FZA (SSL_aFZA|SSL_kFZA|SSL_eFZA)
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#define SSL_ENC_MASK 0x0001Fc00L
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#define SSL_DES 0x00000400L
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#define SSL_3DES 0x00000800L
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#define SSL_RC4 0x00001000L
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#define SSL_RC2 0x00002000L
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#define SSL_IDEA 0x00004000L
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#define SSL_eFZA 0x00008000L
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#define SSL_eNULL 0x00010000L
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#define SSL_MAC_MASK 0x00060000L
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#define SSL_MD5 0x00020000L
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#define SSL_SHA1 0x00040000L
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#define SSL_SHA (SSL_SHA1)
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#define SSL_EXP_MASK 0x00300000L
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#define SSL_EXP40 0x00100000L
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#define SSL_NOT_EXP 0x00200000L
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#define SSL_EXP56 0x00300000L
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#define SSL_IS_EXPORT(a) ((a)&SSL_EXP40)
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#define SSL_IS_EXPORT56(a) (((a)&SSL_EXP_MASK) == SSL_EXP56)
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#define SSL_IS_EXPORT40(a) (((a)&SSL_EXP_MASK) == SSL_EXP40)
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#define SSL_C_IS_EXPORT(c) SSL_IS_EXPORT((c)->algorithms)
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#define SSL_C_IS_EXPORT56(c) SSL_IS_EXPORT56((c)->algorithms)
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#define SSL_C_IS_EXPORT40(c) SSL_IS_EXPORT40((c)->algorithms)
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#define SSL_EXPORT_KEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 5 : \
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((a)&SSL_ENC_MASK) == SSL_DES ? 8 : 7)
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#define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
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#define SSL_C_EXPORT_KEYLENGTH(c) SSL_EXPORT_KEYLENGTH((c)->algorithms)
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#define SSL_C_EXPORT_PKEYLENGTH(c) SSL_EXPORT_PKEYLENGTH((c)->algorithms)
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#define SSL_SSL_MASK 0x00c00000L
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#define SSL_SSLV2 0x00400000L
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#define SSL_SSLV3 0x00800000L
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#define SSL_TLSV1 SSL_SSLV3 /* for now */
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#define SSL_STRONG_MASK 0x07000000L
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#define SSL_LOW 0x01000000L
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#define SSL_MEDIUM 0x02000000L
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#define SSL_HIGH 0x04000000L
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/* we have used 0fffffff - 4 bits left to go */
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#define SSL_ALL 0xffffffffL
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#define SSL_ALL_CIPHERS (SSL_MKEY_MASK|SSL_AUTH_MASK|SSL_ENC_MASK|\
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SSL_MAC_MASK|SSL_EXP_MASK)
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/* Mostly for SSLv3 */
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#define SSL_PKEY_RSA_ENC 0
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#define SSL_PKEY_RSA_SIGN 1
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#define SSL_PKEY_DSA_SIGN 2
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#define SSL_PKEY_DH_RSA 3
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#define SSL_PKEY_DH_DSA 4
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#define SSL_PKEY_NUM 5
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/* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
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* <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
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* SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
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* SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
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* SSL_aRSA <- RSA_ENC | RSA_SIGN
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* SSL_aDSS <- DSA_SIGN
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*/
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/*
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#define CERT_INVALID 0
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#define CERT_PUBLIC_KEY 1
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#define CERT_PRIVATE_KEY 2
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*/
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typedef struct cert_pkey_st
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{
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X509 *x509;
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EVP_PKEY *privatekey;
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} CERT_PKEY;
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typedef struct cert_st
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{
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/* Current active set */
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CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
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* Probably it would make more sense to store
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* an index, not a pointer. */
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/* The following masks are for the key and auth
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* algorithms that are supported by the certs below */
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int valid;
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unsigned long mask;
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unsigned long export_mask;
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#ifndef NO_RSA
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RSA *rsa_tmp;
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RSA *(*rsa_tmp_cb)(SSL *ssl,int is_export,int keysize);
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#endif
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#ifndef NO_DH
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DH *dh_tmp;
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DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
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#endif
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CERT_PKEY pkeys[SSL_PKEY_NUM];
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int references; /* >1 only if SSL_copy_session_id is used */
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} CERT;
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typedef struct sess_cert_st
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{
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STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
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/* The 'peer_...' members are used only by clients. */
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int peer_cert_type;
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CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
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CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
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/* Obviously we don't have the private keys of these,
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* so maybe we shouldn't even use the CERT_PKEY type here. */
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#ifndef NO_RSA
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RSA *peer_rsa_tmp; /* not used for SSL 2 */
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#endif
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#ifndef NO_DH
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DH *peer_dh_tmp; /* not used for SSL 2 */
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#endif
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int references; /* actually always 1 at the moment */
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} SESS_CERT;
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/*#define MAC_DEBUG */
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/*#define ERR_DEBUG */
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/*#define ABORT_DEBUG */
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/*#define PKT_DEBUG 1 */
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/*#define DES_DEBUG */
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/*#define DES_OFB_DEBUG */
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/*#define SSL_DEBUG */
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/*#define RSA_DEBUG */
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/*#define IDEA_DEBUG */
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#define FP_ICC (int (*)(const void *,const void *))
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#define ssl_put_cipher_by_char(ssl,ciph,ptr) \
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((ssl)->method->put_cipher_by_char((ciph),(ptr)))
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#define ssl_get_cipher_by_char(ssl,ptr) \
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((ssl)->method->get_cipher_by_char(ptr))
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/* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
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* It is a bit of a mess of functions, but hell, think of it as
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* an opaque strucute :-) */
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typedef struct ssl3_enc_method
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{
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int (*enc)();
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int (*mac)();
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int (*setup_key_block)();
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int (*generate_master_secret)();
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int (*change_cipher_state)();
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int (*final_finish_mac)();
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int finish_mac_length;
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int (*cert_verify_mac)();
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unsigned char client_finished[20];
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int client_finished_len;
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unsigned char server_finished[20];
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int server_finished_len;
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int (*alert_value)();
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} SSL3_ENC_METHOD;
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/* Used for holding the relevant compression methods loaded into SSL_CTX */
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typedef struct ssl3_comp_st
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{
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int comp_id; /* The identifer byte for this compression type */
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char *name; /* Text name used for the compression type */
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COMP_METHOD *method; /* The method :-) */
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} SSL3_COMP;
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OPENSSL_EXTERN SSL3_ENC_METHOD ssl3_undef_enc_method;
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OPENSSL_EXTERN SSL_CIPHER ssl2_ciphers[];
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OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
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#ifdef VMS
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#undef SSL_COMP_get_compression_methods
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#define SSL_COMP_get_compression_methods SSL_COMP_get_compress_methods
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#endif
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SSL_METHOD *ssl_bad_method(int ver);
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SSL_METHOD *sslv2_base_method(void);
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SSL_METHOD *sslv23_base_method(void);
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SSL_METHOD *sslv3_base_method(void);
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void ssl_clear_cipher_ctx(SSL *s);
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int ssl_clear_bad_session(SSL *s);
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CERT *ssl_cert_new(void);
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CERT *ssl_cert_dup(CERT *cert);
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int ssl_cert_inst(CERT **o);
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void ssl_cert_free(CERT *c);
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SESS_CERT *ssl_sess_cert_new(void);
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void ssl_sess_cert_free(SESS_CERT *sc);
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int ssl_set_peer_cert_type(SESS_CERT *c, int type);
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int ssl_get_new_session(SSL *s, int session);
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int ssl_get_prev_session(SSL *s, unsigned char *session,int len);
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int ssl_cipher_id_cmp(SSL_CIPHER *a,SSL_CIPHER *b);
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int ssl_cipher_ptr_id_cmp(SSL_CIPHER **ap,SSL_CIPHER **bp);
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STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
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STACK_OF(SSL_CIPHER) **skp);
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int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p);
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STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_METHOD *meth,
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STACK_OF(SSL_CIPHER) **pref,
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STACK_OF(SSL_CIPHER) **sorted,
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char *str);
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void ssl_update_cache(SSL *s, int mode);
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int ssl_cipher_get_evp(SSL_SESSION *s,const EVP_CIPHER **enc,const EVP_MD **md,
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SSL_COMP **comp);
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int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
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int ssl_undefined_function(SSL *s);
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X509 *ssl_get_server_send_cert(SSL *);
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EVP_PKEY *ssl_get_sign_pkey(SSL *,SSL_CIPHER *);
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int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
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void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher);
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STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
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int ssl_verify_alarm_type(long type);
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int ssl2_enc_init(SSL *s, int client);
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void ssl2_generate_key_material(SSL *s);
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void ssl2_enc(SSL *s,int send_data);
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void ssl2_mac(SSL *s,unsigned char *mac,int send_data);
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SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
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int ssl2_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
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int ssl2_part_read(SSL *s, unsigned long f, int i);
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int ssl2_do_write(SSL *s);
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int ssl2_set_certificate(SSL *s, int type, int len, unsigned char *data);
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void ssl2_return_error(SSL *s,int reason);
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void ssl2_write_error(SSL *s);
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int ssl2_num_ciphers(void);
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SSL_CIPHER *ssl2_get_cipher(unsigned int u);
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int ssl2_new(SSL *s);
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void ssl2_free(SSL *s);
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int ssl2_accept(SSL *s);
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int ssl2_connect(SSL *s);
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int ssl2_read(SSL *s, void *buf, int len);
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int ssl2_peek(SSL *s, char *buf, int len);
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int ssl2_write(SSL *s, const void *buf, int len);
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int ssl2_shutdown(SSL *s);
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void ssl2_clear(SSL *s);
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long ssl2_ctrl(SSL *s,int cmd, long larg, char *parg);
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long ssl2_ctx_ctrl(SSL_CTX *s,int cmd, long larg, char *parg);
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int ssl2_pending(SSL *s);
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SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
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int ssl3_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
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void ssl3_init_finished_mac(SSL *s);
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int ssl3_send_server_certificate(SSL *s);
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int ssl3_get_finished(SSL *s,int state_a,int state_b);
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int ssl3_setup_key_block(SSL *s);
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int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
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int ssl3_change_cipher_state(SSL *s,int which);
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void ssl3_cleanup_key_block(SSL *s);
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int ssl3_do_write(SSL *s,int type);
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void ssl3_send_alert(SSL *s,int level, int desc);
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int ssl3_generate_master_secret(SSL *s, unsigned char *out,
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unsigned char *p, int len);
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int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
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long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
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int ssl3_send_finished(SSL *s, int a, int b, unsigned char *sender,int slen);
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int ssl3_num_ciphers(void);
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SSL_CIPHER *ssl3_get_cipher(unsigned int u);
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int ssl3_renegotiate(SSL *ssl);
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int ssl3_renegotiate_check(SSL *ssl);
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int ssl3_dispatch_alert(SSL *s);
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int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len);
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int ssl3_part_read(SSL *s, int i);
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int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
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int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1,EVP_MD_CTX *ctx2,
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unsigned char *sender, int slen,unsigned char *p);
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int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
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void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
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int ssl3_enc(SSL *s, int send_data);
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int ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
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unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
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SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *have,
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STACK_OF(SSL_CIPHER) *pref);
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int ssl3_setup_buffers(SSL *s);
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int ssl3_new(SSL *s);
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void ssl3_free(SSL *s);
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int ssl3_accept(SSL *s);
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int ssl3_connect(SSL *s);
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int ssl3_read(SSL *s, void *buf, int len);
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int ssl3_peek(SSL *s,char *buf, int len);
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int ssl3_write(SSL *s, const void *buf, int len);
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int ssl3_shutdown(SSL *s);
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void ssl3_clear(SSL *s);
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long ssl3_ctrl(SSL *s,int cmd, long larg, char *parg);
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long ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, char *parg);
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int ssl3_pending(SSL *s);
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int ssl23_accept(SSL *s);
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int ssl23_connect(SSL *s);
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int ssl23_read_bytes(SSL *s, int n);
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int ssl23_write_bytes(SSL *s);
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int tls1_new(SSL *s);
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void tls1_free(SSL *s);
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void tls1_clear(SSL *s);
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long tls1_ctrl(SSL *s,int cmd, long larg, char *parg);
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SSL_METHOD *tlsv1_base_method(void );
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int ssl_init_wbio_buffer(SSL *s, int push);
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void ssl_free_wbio_buffer(SSL *s);
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int tls1_change_cipher_state(SSL *s, int which);
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int tls1_setup_key_block(SSL *s);
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int tls1_enc(SSL *s, int snd);
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int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
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unsigned char *str, int slen, unsigned char *p);
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int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
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int tls1_mac(SSL *ssl, unsigned char *md, int snd);
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int tls1_generate_master_secret(SSL *s, unsigned char *out,
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unsigned char *p, int len);
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int tls1_alert_code(int code);
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int ssl3_alert_code(int code);
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int ssl_ok(SSL *s);
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SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
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STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
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#endif
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