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[apple/security.git] / OSX / libsecurity_apple_csp / open_ssl / cryptlib.c
diff --git a/OSX/libsecurity_apple_csp/open_ssl/cryptlib.c b/OSX/libsecurity_apple_csp/open_ssl/cryptlib.c
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+/*
+ * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
+ * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
+ * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
+ * specific language governing rights and limitations under the License.
+ */
+
+
+/* crypto/cryptlib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "cryptlib.h"
+#include <openssl/crypto.h>
+
+#if defined(WIN32) || defined(WIN16)
+static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
+#endif
+
+/* real #defines in crypto.h, keep these upto date */
+#if defined(LOCK_DEBUG)
+static const char* const lock_names[CRYPTO_NUM_LOCKS] =
+       {
+       "<<ERROR>>",
+       "err",
+       "err_hash",
+       "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",
+       "rand",
+       "debug_malloc",
+       "BIO",
+       "gethostbyname",
+       "getservbyname",
+       "readdir",
+       "RSA_blinding",
+       "dh",
+       "debug_malloc2",
+#if CRYPTO_NUM_LOCKS != 26
+# error "Inconsistency between crypto.h and cryptlib.c"
+#endif
+       };
+#endif /*LOCK_DEBUG*/
+
+static STACK *app_locks=NULL;
+
+#if            CRYPTO_CALLBACK_ENABLE
+static void (MS_FAR *locking_callback)(int mode,int type,
+       const char *file,int line)=NULL;
+static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
+       int type,const char *file,int line)=NULL;
+static unsigned long (MS_FAR *id_callback)(void)=NULL;
+#endif /* CRYPTO_CALLBACK_ENABLE */
+
+int CRYPTO_get_new_lockid(char *name)
+       {
+       char *str;
+       int i;
+
+       /* 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) */
+#if defined(WIN32) || defined(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)
+               return(0);
+       i=sk_push(app_locks,str);
+       if (!i)
+               Free(str);
+       else
+               i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
+       return(i);
+       }
+
+int CRYPTO_num_locks(void)
+       {
+       return CRYPTO_NUM_LOCKS;
+       }
+
+void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
+               int line)
+       {
+       #if     CRYPTO_CALLBACK_ENABLE
+       return(locking_callback);
+       #else
+       return NULL;
+       #endif
+       }
+
+int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
+                                         const char *file,int line)
+       {
+       #if     CRYPTO_CALLBACK_ENABLE
+       return(add_lock_callback);
+       #else
+       return NULL;
+       #endif
+       }
+
+void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
+                                             const char *file,int line))
+       {
+       #if     CRYPTO_CALLBACK_ENABLE
+       locking_callback=func;
+       #endif
+       }
+
+void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
+                                             const char *file,int line))
+       {
+       #if     CRYPTO_CALLBACK_ENABLE
+       add_lock_callback=func;
+       #endif
+       }
+
+unsigned long (*CRYPTO_get_id_callback(void))(void)
+       {
+       #if     CRYPTO_CALLBACK_ENABLE
+       return(id_callback);
+       #else
+       return NULL;
+       #endif
+       }
+
+void CRYPTO_set_id_callback(unsigned long (*func)(void))
+       {
+       #if     CRYPTO_CALLBACK_ENABLE
+       id_callback=func;
+       #endif
+       }
+
+unsigned long CRYPTO_thread_id(void)
+       {
+       unsigned long ret=0;
+
+#if    CRYPTO_CALLBACK_ENABLE
+       if (id_callback == NULL)
+               {
+#ifdef WIN16
+               ret=(unsigned long)GetCurrentTask();
+#elif defined(WIN32)
+               ret=(unsigned long)GetCurrentThreadId();
+#elif defined(GETPID_IS_MEANINGLESS)
+               ret=1L;
+#else
+               ret=(unsigned long)getpid();
+#endif
+               }
+       else
+               ret=id_callback();
+#endif /* CRYPTO_CALLBACK_ENABLE */
+       return(ret);
+       }
+
+void CRYPTO_lock(int mode, int type, const char *file, int line)
+       {
+#ifdef LOCK_DEBUG
+               {
+               char *rw_text,*operation_text;
+
+               if (mode & CRYPTO_LOCK)
+                       operation_text="lock  ";
+               else if (mode & CRYPTO_UNLOCK)
+                       operation_text="unlock";
+               else
+                       operation_text="ERROR ";
+
+               if (mode & CRYPTO_READ)
+                       rw_text="r";
+               else if (mode & CRYPTO_WRITE)
+                       rw_text="w";
+               else
+                       rw_text="ERROR";
+
+               fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
+                       CRYPTO_thread_id(), rw_text, operation_text,
+                       CRYPTO_get_lock_name(type), file, line);
+               }
+#endif
+#if    CRYPTO_CALLBACK_ENABLE
+       if (locking_callback != NULL)
+               locking_callback(mode,type,file,line);
+#endif
+       }
+
+int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
+            int line)
+       {
+       int ret;
+#if    CRYPTO_CALLBACK_ENABLE
+       if (add_lock_callback != NULL)
+               {
+#ifdef LOCK_DEBUG
+               int before= *pointer;
+#endif
+
+               ret=add_lock_callback(pointer,amount,type,file,line);
+#ifdef LOCK_DEBUG
+               fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
+                       CRYPTO_thread_id(),
+                       before,amount,ret,
+                       CRYPTO_get_lock_name(type),
+                       file,line);
+#endif
+               *pointer=ret;
+               }
+       else
+#endif /* CRYPTO_CALLBACK_ENABLE */
+               {
+               CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
+
+               ret= *pointer+amount;
+#ifdef LOCK_DEBUG
+               fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
+                       CRYPTO_thread_id(),
+                       *pointer,amount,ret,
+                       CRYPTO_get_lock_name(type),
+                       file,line);
+#endif
+               *pointer=ret;
+               CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
+               }
+       return(ret);
+       }
+
+#ifdef LOCK_DEBUG
+const char *CRYPTO_get_lock_name(int type)
+       {
+       if (type < 0)
+               return("ERROR");
+       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));
+       }
+#endif /*LOCK_DEBUG*/
+
+#ifdef _DLL
+#ifdef WIN32
+
+/* All we really need to do is remove the 'error' state when a thread
+ * detaches */
+
+BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
+            LPVOID lpvReserved)
+       {
+       switch(fdwReason)
+               {
+       case DLL_PROCESS_ATTACH:
+               break;
+       case DLL_THREAD_ATTACH:
+               break;
+       case DLL_THREAD_DETACH:
+               ERR_remove_state(0);
+               break;
+       case DLL_PROCESS_DETACH:
+               break;
+               }
+       return(TRUE);
+       }
+#endif
+
+#endif