4ed9388e5d
OpenSSL-fips-0_9_7-stable. Since the 0.9.7-stable branch is supposed to be in freeze and should only contain bug corrections, this change removes the FIPS changes from that branch.
515 lines
13 KiB
C
515 lines
13 KiB
C
/* crypto/cryptlib.c */
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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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#include <stdio.h>
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#include <string.h>
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#include "cryptlib.h"
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#include <openssl/crypto.h>
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#include <openssl/safestack.h>
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#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
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static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
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#endif
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DECLARE_STACK_OF(CRYPTO_dynlock)
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IMPLEMENT_STACK_OF(CRYPTO_dynlock)
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/* real #defines in crypto.h, keep these upto date */
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static const char* lock_names[CRYPTO_NUM_LOCKS] =
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{
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"<<ERROR>>",
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"err",
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"ex_data",
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"x509",
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"x509_info",
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"x509_pkey",
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"x509_crl",
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"x509_req",
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"dsa",
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"rsa",
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"evp_pkey",
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"x509_store",
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"ssl_ctx",
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"ssl_cert",
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"ssl_session",
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"ssl_sess_cert",
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"ssl",
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"ssl_method",
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"rand",
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"rand2",
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"debug_malloc",
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"BIO",
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"gethostbyname",
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"getservbyname",
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"readdir",
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"RSA_blinding",
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"dh",
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"debug_malloc2",
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"dso",
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"dynlock",
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"engine",
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"ui",
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"hwcrhk", /* This is a HACK which will disappear in 0.9.8 */
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#if CRYPTO_NUM_LOCKS != 33
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# error "Inconsistency between crypto.h and cryptlib.c"
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#endif
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};
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/* This is for applications to allocate new type names in the non-dynamic
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array of lock names. These are numbered with positive numbers. */
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static STACK *app_locks=NULL;
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/* For applications that want a more dynamic way of handling threads, the
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following stack is used. These are externally numbered with negative
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numbers. */
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static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
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static void (MS_FAR *locking_callback)(int mode,int type,
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const char *file,int line)=NULL;
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static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
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int type,const char *file,int line)=NULL;
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static unsigned long (MS_FAR *id_callback)(void)=NULL;
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static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
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(const char *file,int line)=NULL;
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static void (MS_FAR *dynlock_lock_callback)(int mode,
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struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
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static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
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const char *file,int line)=NULL;
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int CRYPTO_get_new_lockid(char *name)
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{
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char *str;
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int i;
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#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
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/* A hack to make Visual C++ 5.0 work correctly when linking as
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* a DLL using /MT. Without this, the application cannot use
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* and floating point printf's.
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* It also seems to be needed for Visual C 1.5 (win16) */
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SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
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#endif
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if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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if ((str=BUF_strdup(name)) == NULL)
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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i=sk_push(app_locks,str);
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if (!i)
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OPENSSL_free(str);
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else
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i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
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return(i);
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}
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int CRYPTO_num_locks(void)
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{
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return CRYPTO_NUM_LOCKS;
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}
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int CRYPTO_get_new_dynlockid(void)
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{
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int i = 0;
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CRYPTO_dynlock *pointer = NULL;
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if (dynlock_create_callback == NULL)
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
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return(0);
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}
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CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
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if ((dyn_locks == NULL)
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&& ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
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{
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CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
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if (pointer == NULL)
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{
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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pointer->references = 1;
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pointer->data = dynlock_create_callback(__FILE__,__LINE__);
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if (pointer->data == NULL)
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{
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OPENSSL_free(pointer);
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CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
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/* First, try to find an existing empty slot */
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i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
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/* If there was none, push, thereby creating a new one */
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if (i == -1)
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/* Since sk_push() returns the number of items on the
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stack, not the location of the pushed item, we need
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to transform the returned number into a position,
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by decreasing it. */
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i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
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else
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/* If we found a place with a NULL pointer, put our pointer
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in it. */
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sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
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CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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if (i == -1)
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{
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dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
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OPENSSL_free(pointer);
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}
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else
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i += 1; /* to avoid 0 */
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return -i;
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}
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void CRYPTO_destroy_dynlockid(int i)
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{
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CRYPTO_dynlock *pointer = NULL;
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if (i)
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i = -i-1;
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if (dynlock_destroy_callback == NULL)
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return;
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CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
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if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
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{
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CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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return;
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}
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pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
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if (pointer != NULL)
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{
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--pointer->references;
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#ifdef REF_CHECK
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if (pointer->references < 0)
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{
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fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
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abort();
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}
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else
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#endif
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if (pointer->references <= 0)
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{
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sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
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}
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else
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pointer = NULL;
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}
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CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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if (pointer)
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{
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dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
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OPENSSL_free(pointer);
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}
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}
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struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
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{
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CRYPTO_dynlock *pointer = NULL;
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if (i)
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i = -i-1;
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CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
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if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
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pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
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if (pointer)
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pointer->references++;
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CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
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if (pointer)
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return pointer->data;
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return NULL;
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}
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struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
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(const char *file,int line)
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{
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return(dynlock_create_callback);
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}
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void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
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struct CRYPTO_dynlock_value *l, const char *file,int line)
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{
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return(dynlock_lock_callback);
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}
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void (*CRYPTO_get_dynlock_destroy_callback(void))
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(struct CRYPTO_dynlock_value *l, const char *file,int line)
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{
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return(dynlock_destroy_callback);
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}
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void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
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(const char *file, int line))
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{
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dynlock_create_callback=func;
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}
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void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
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struct CRYPTO_dynlock_value *l, const char *file, int line))
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{
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dynlock_lock_callback=func;
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}
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void CRYPTO_set_dynlock_destroy_callback(void (*func)
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(struct CRYPTO_dynlock_value *l, const char *file, int line))
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{
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dynlock_destroy_callback=func;
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}
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void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
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int line)
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{
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return(locking_callback);
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}
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int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
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const char *file,int line)
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{
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return(add_lock_callback);
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}
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void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
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const char *file,int line))
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{
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locking_callback=func;
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}
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void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
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const char *file,int line))
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{
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add_lock_callback=func;
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}
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unsigned long (*CRYPTO_get_id_callback(void))(void)
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{
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return(id_callback);
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}
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void CRYPTO_set_id_callback(unsigned long (*func)(void))
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{
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id_callback=func;
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}
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unsigned long CRYPTO_thread_id(void)
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{
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unsigned long ret=0;
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if (id_callback == NULL)
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{
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#ifdef OPENSSL_SYS_WIN16
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ret=(unsigned long)GetCurrentTask();
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#elif defined(OPENSSL_SYS_WIN32)
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ret=(unsigned long)GetCurrentThreadId();
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#elif defined(GETPID_IS_MEANINGLESS)
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ret=1L;
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#else
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ret=(unsigned long)getpid();
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#endif
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}
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else
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ret=id_callback();
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return(ret);
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}
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void CRYPTO_lock(int mode, int type, const char *file, int line)
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{
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#ifdef LOCK_DEBUG
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{
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char *rw_text,*operation_text;
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if (mode & CRYPTO_LOCK)
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operation_text="lock ";
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else if (mode & CRYPTO_UNLOCK)
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operation_text="unlock";
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else
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operation_text="ERROR ";
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if (mode & CRYPTO_READ)
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rw_text="r";
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else if (mode & CRYPTO_WRITE)
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rw_text="w";
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else
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rw_text="ERROR";
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fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
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CRYPTO_thread_id(), rw_text, operation_text,
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CRYPTO_get_lock_name(type), file, line);
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}
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#endif
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if (type < 0)
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{
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if (dynlock_lock_callback != NULL)
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{
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struct CRYPTO_dynlock_value *pointer
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= CRYPTO_get_dynlock_value(type);
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OPENSSL_assert(pointer != NULL);
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dynlock_lock_callback(mode, pointer, file, line);
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CRYPTO_destroy_dynlockid(type);
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}
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}
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else
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if (locking_callback != NULL)
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locking_callback(mode,type,file,line);
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}
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int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
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int line)
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{
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int ret = 0;
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if (add_lock_callback != NULL)
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{
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#ifdef LOCK_DEBUG
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int before= *pointer;
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#endif
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ret=add_lock_callback(pointer,amount,type,file,line);
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#ifdef LOCK_DEBUG
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fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
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CRYPTO_thread_id(),
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before,amount,ret,
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CRYPTO_get_lock_name(type),
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file,line);
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#endif
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}
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else
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{
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CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
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ret= *pointer+amount;
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#ifdef LOCK_DEBUG
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fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
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CRYPTO_thread_id(),
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*pointer,amount,ret,
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CRYPTO_get_lock_name(type),
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file,line);
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#endif
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*pointer=ret;
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CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
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}
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return(ret);
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}
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const char *CRYPTO_get_lock_name(int type)
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{
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if (type < 0)
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return("dynamic");
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else if (type < CRYPTO_NUM_LOCKS)
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return(lock_names[type]);
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else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
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return("ERROR");
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else
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return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
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}
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#ifdef _DLL
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#ifdef OPENSSL_SYS_WIN32
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/* All we really need to do is remove the 'error' state when a thread
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* detaches */
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BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
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LPVOID lpvReserved)
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{
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switch(fdwReason)
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{
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case DLL_PROCESS_ATTACH:
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break;
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case DLL_THREAD_ATTACH:
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break;
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case DLL_THREAD_DETACH:
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ERR_remove_state(0);
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break;
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case DLL_PROCESS_DETACH:
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break;
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}
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return(TRUE);
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}
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#endif
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#endif
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void OpenSSLDie(const char *file,int line,const char *assertion)
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{
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fprintf(stderr,
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"%s(%d): OpenSSL internal error, assertion failed: %s\n",
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file,line,assertion);
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abort();
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}
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