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Diffstat (limited to 'openssl/crypto/dyn_lck.c')
| -rw-r--r-- | openssl/crypto/dyn_lck.c | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/openssl/crypto/dyn_lck.c b/openssl/crypto/dyn_lck.c new file mode 100644 index 000000000..7f82c4126 --- /dev/null +++ b/openssl/crypto/dyn_lck.c @@ -0,0 +1,428 @@ +/* crypto/cryptlib.c */ +/* ==================================================================== + * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * ECDH support in OpenSSL originally developed by + * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. + */ + +#include "cryptlib.h" +#include <openssl/safestack.h> + +#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16) +static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */ +#endif + +DECLARE_STACK_OF(CRYPTO_dynlock) +IMPLEMENT_STACK_OF(CRYPTO_dynlock) + +/* real #defines in crypto.h, keep these upto date */ +static const char* const lock_names[CRYPTO_NUM_LOCKS] = + { + "<<ERROR>>", + "err", + "ex_data", + "x509", + "x509_info", + "x509_pkey", + "x509_crl", + "x509_req", + "dsa", + "rsa", + "evp_pkey", + "x509_store", + "ssl_ctx", + "ssl_cert", + "ssl_session", + "ssl_sess_cert", + "ssl", + "ssl_method", + "rand", + "rand2", + "debug_malloc", + "BIO", + "gethostbyname", + "getservbyname", + "readdir", + "RSA_blinding", + "dh", + "debug_malloc2", + "dso", + "dynlock", + "engine", + "ui", + "ecdsa", + "ec", + "ecdh", + "bn", + "ec_pre_comp", + "store", + "comp", +#ifndef OPENSSL_FIPS +# if CRYPTO_NUM_LOCKS != 39 +# error "Inconsistency between crypto.h and cryptlib.c" +# endif +#else + "fips", + "fips2", +# if CRYPTO_NUM_LOCKS != 41 +# error "Inconsistency between crypto.h and cryptlib.c" +# endif +#endif + }; + +/* This is for applications to allocate new type names in the non-dynamic + array of lock names. These are numbered with positive numbers. */ +static STACK *app_locks=NULL; + +/* For applications that want a more dynamic way of handling threads, the + following stack is used. These are externally numbered with negative + numbers. */ +static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL; + + +static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback) + (const char *file,int line)=NULL; +static void (MS_FAR *dynlock_lock_callback)(int mode, + struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL; +static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l, + const char *file,int line)=NULL; + +int CRYPTO_get_new_lockid(char *name) + { + char *str; + int i; + +#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16) + /* A hack to make Visual C++ 5.0 work correctly when linking as + * a DLL using /MT. Without this, the application cannot use + * and floating point printf's. + * It also seems to be needed for Visual C 1.5 (win16) */ + SSLeay_MSVC5_hack=(double)name[0]*(double)name[1]; +#endif + + if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL)) + { + CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE); + return(0); + } + if ((str=BUF_strdup(name)) == NULL) + { + CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE); + return(0); + } + i=sk_push(app_locks,str); + if (!i) + OPENSSL_free(str); + else + i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */ + return(i); + } + +int CRYPTO_get_new_dynlockid(void) + { + int i = 0; + CRYPTO_dynlock *pointer = NULL; + + if (dynlock_create_callback == NULL) + { + CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK); + return(0); + } + CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK); + if ((dyn_locks == NULL) + && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL)) + { + CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK); + CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE); + return(0); + } + CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK); + + pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock)); + if (pointer == NULL) + { + CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE); + return(0); + } + pointer->references = 1; + pointer->data = dynlock_create_callback(__FILE__,__LINE__); + if (pointer->data == NULL) + { + OPENSSL_free(pointer); + CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE); + return(0); + } + + CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK); + /* First, try to find an existing empty slot */ + i=sk_CRYPTO_dynlock_find(dyn_locks,NULL); + /* If there was none, push, thereby creating a new one */ + if (i == -1) + /* Since sk_push() returns the number of items on the + stack, not the location of the pushed item, we need + to transform the returned number into a position, + by decreasing it. */ + i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1; + else + /* If we found a place with a NULL pointer, put our pointer + in it. */ + (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer); + CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK); + + if (i == -1) + { + dynlock_destroy_callback(pointer->data,__FILE__,__LINE__); + OPENSSL_free(pointer); + } + else + i += 1; /* to avoid 0 */ + return -i; + } + +void CRYPTO_destroy_dynlockid(int i) + { + CRYPTO_dynlock *pointer = NULL; + if (i) + i = -i-1; + if (dynlock_destroy_callback == NULL) + return; + + CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK); + + if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks)) + { + CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK); + return; + } + pointer = sk_CRYPTO_dynlock_value(dyn_locks, i); + if (pointer != NULL) + { + --pointer->references; +#ifdef REF_CHECK + if (pointer->references < 0) + { + fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n"); + abort(); + } + else +#endif + if (pointer->references <= 0) + { + (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL); + } + else + pointer = NULL; + } + CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK); + + if (pointer) + { + dynlock_destroy_callback(pointer->data,__FILE__,__LINE__); + OPENSSL_free(pointer); + } + } + +struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i) + { + CRYPTO_dynlock *pointer = NULL; + if (i) + i = -i-1; + + CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK); + + if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks)) + pointer = sk_CRYPTO_dynlock_value(dyn_locks, i); + if (pointer) + pointer->references++; + + CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK); + + if (pointer) + return pointer->data; + return NULL; + } + +struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void)) + (const char *file,int line) + { + return(dynlock_create_callback); + } + +void (*CRYPTO_get_dynlock_lock_callback(void))(int mode, + struct CRYPTO_dynlock_value *l, const char *file,int line) + { + return(dynlock_lock_callback); + } + +void (*CRYPTO_get_dynlock_destroy_callback(void)) + (struct CRYPTO_dynlock_value *l, const char *file,int line) + { + return(dynlock_destroy_callback); + } + +void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func) + (const char *file, int line)) + { + dynlock_create_callback=func; + } + +static void do_dynlock(int mode, int type, const char *file, int line) + { + if (dynlock_lock_callback != NULL) + { + struct CRYPTO_dynlock_value *pointer + = CRYPTO_get_dynlock_value(type); + + OPENSSL_assert(pointer != NULL); + + dynlock_lock_callback(mode, pointer, file, line); + + CRYPTO_destroy_dynlockid(type); + } + } + +void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode, + struct CRYPTO_dynlock_value *l, const char *file, int line)) + { + /* Set callback so CRYPTO_lock() can now handle dynamic locks. + * This is OK because at this point and application shouldn't be using + * OpenSSL from multiple threads because it is setting up the locking + * callbacks. + */ + static int done = 0; + if (!done) + { + int_CRYPTO_set_do_dynlock_callback(do_dynlock); + done = 1; + } + + dynlock_lock_callback=func; + } + +void CRYPTO_set_dynlock_destroy_callback(void (*func) + (struct CRYPTO_dynlock_value *l, const char *file, int line)) + { + dynlock_destroy_callback=func; + } + +const char *CRYPTO_get_lock_name(int type) + { + if (type < 0) + return("dynamic"); + else if (type < CRYPTO_NUM_LOCKS) + return(lock_names[type]); + else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks)) + return("ERROR"); + else + return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS)); + } + |