/* 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)); }