src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/ssl/src/crypto/dso/dso_win32.c - public/gem5-resources - Git at Google

 /* dso_win32.c -*- mode:C; c-file-style: "eay" -*- */
 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
  * project 2000.
  */
 /* ====================================================================
  * Copyright (c) 2000 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
  *    licensing@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).
  *
  */

 #include <stdio.h>
 #include <string.h>
 #include "cryptlib.h"
 #include <openssl/dso.h>

 #if !defined(DSO_WIN32)
 DSO_METHOD *DSO_METHOD_win32(void)
 	{
 	return NULL;
 	}
 #else

 #ifdef _WIN32_WCE
 # if _WIN32_WCE < 300
 static FARPROC GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)
 	{
 	WCHAR lpProcNameW[64];
 	int i;

 	for (i=0;lpProcName[i] && i<64;i++)
 		lpProcNameW[i] = (WCHAR)lpProcName[i];
 	if (i==64) return NULL;
 	lpProcNameW[i] = 0;

 	return GetProcAddressW(hModule,lpProcNameW);
 	}
 # endif
 # undef GetProcAddress
 # define GetProcAddress GetProcAddressA

 static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
 	{
 	WCHAR *fnamw;
 	size_t len_0=strlen(lpLibFileName)+1,i;

 #ifdef _MSC_VER
 	fnamw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
 #else
 	fnamw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
 #endif
 	if (fnamw == NULL) return NULL;

 #if defined(_WIN32_WCE) && _WIN32_WCE>=101
 	if (!MultiByteToWideChar(CP_ACP,0,lpLibFileName,len_0,fnamw,len_0))
 #endif
 		for (i=0;i<len_0;i++) fnamw[i]=(WCHAR)lpLibFileName[i];

 	return LoadLibraryW(fnamw);
 	}
 #endif

 /* Part of the hack in "win32_load" ... */
 #define DSO_MAX_TRANSLATED_SIZE 256

 static int win32_load(DSO *dso);
 static int win32_unload(DSO *dso);
 static void *win32_bind_var(DSO *dso, const char *symname);
 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
 #if 0
 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
 static int win32_init(DSO *dso);
 static int win32_finish(DSO *dso);
 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
 #endif
 static char *win32_name_converter(DSO *dso, const char *filename);
 static char *win32_merger(DSO *dso, const char *filespec1,
 	const char *filespec2);

 static const char *openssl_strnchr(const char *string, int c, size_t len);

 static DSO_METHOD dso_meth_win32 = {
 	"OpenSSL 'win32' shared library method",
 	win32_load,
 	win32_unload,
 	win32_bind_var,
 	win32_bind_func,
 /* For now, "unbind" doesn't exist */
 #if 0
 	NULL, /* unbind_var */
 	NULL, /* unbind_func */
 #endif
 	NULL, /* ctrl */
 	win32_name_converter,
 	win32_merger,
 	NULL, /* init */
 	NULL  /* finish */
 	};

 DSO_METHOD *DSO_METHOD_win32(void)
 	{
 	return(&dso_meth_win32);
 	}

 /* For this DSO_METHOD, our meth_data STACK will contain;
  * (i) a pointer to the handle (HINSTANCE) returned from
  *     LoadLibrary(), and copied.
  */

 static int win32_load(DSO *dso)
 	{
 	HINSTANCE h = NULL, *p = NULL;
 	/* See applicable comments from dso_dl.c */
 	char *filename = DSO_convert_filename(dso, NULL);

 	if(filename == NULL)
 		{
 		DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
 		goto err;
 		}
 	h = LoadLibraryA(filename);
 	if(h == NULL)
 		{
 		DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
 		ERR_add_error_data(3, "filename(", filename, ")");
 		goto err;
 		}
 	p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
 	if(p == NULL)
 		{
 		DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
 		goto err;
 		}
 	*p = h;
 	if(!sk_push(dso->meth_data, (char *)p))
 		{
 		DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
 		goto err;
 		}
 	/* Success */
 	dso->loaded_filename = filename;
 	return(1);
 err:
 	/* Cleanup !*/
 	if(filename != NULL)
 		OPENSSL_free(filename);
 	if(p != NULL)
 		OPENSSL_free(p);
 	if(h != NULL)
 		FreeLibrary(h);
 	return(0);
 	}

 static int win32_unload(DSO *dso)
 	{
 	HINSTANCE *p;
 	if(dso == NULL)
 		{
 		DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
 		return(0);
 		}
 	if(sk_num(dso->meth_data) < 1)
 		return(1);
 	p = (HINSTANCE *)sk_pop(dso->meth_data);
 	if(p == NULL)
 		{
 		DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
 		return(0);
 		}
 	if(!FreeLibrary(*p))
 		{
 		DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
 		/* We should push the value back onto the stack in
 		 * case of a retry. */
 		sk_push(dso->meth_data, (char *)p);
 		return(0);
 		}
 	/* Cleanup */
 	OPENSSL_free(p);
 	return(1);
 	}

 /* Using GetProcAddress for variables? TODO: Check this out in
  * the Win32 API docs, there's probably a variant for variables. */
 static void *win32_bind_var(DSO *dso, const char *symname)
 	{
 	HINSTANCE *ptr;
 	void *sym;

 	if((dso == NULL) || (symname == NULL))
 		{
 		DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
 		return(NULL);
 		}
 	if(sk_num(dso->meth_data) < 1)
 		{
 		DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
 		return(NULL);
 		}
 	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
 	if(ptr == NULL)
 		{
 		DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
 		return(NULL);
 		}
 	sym = GetProcAddress(*ptr, symname);
 	if(sym == NULL)
 		{
 		DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
 		ERR_add_error_data(3, "symname(", symname, ")");
 		return(NULL);
 		}
 	return(sym);
 	}

 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
 	{
 	HINSTANCE *ptr;
 	void *sym;

 	if((dso == NULL) || (symname == NULL))
 		{
 		DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
 		return(NULL);
 		}
 	if(sk_num(dso->meth_data) < 1)
 		{
 		DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
 		return(NULL);
 		}
 	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
 	if(ptr == NULL)
 		{
 		DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
 		return(NULL);
 		}
 	sym = GetProcAddress(*ptr, symname);
 	if(sym == NULL)
 		{
 		DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
 		ERR_add_error_data(3, "symname(", symname, ")");
 		return(NULL);
 		}
 	return((DSO_FUNC_TYPE)sym);
 	}

 struct file_st
 	{
 	const char *node; int nodelen;
 	const char *device; int devicelen;
 	const char *predir; int predirlen;
 	const char *dir; int dirlen;
 	const char *file; int filelen;
 	};

 static struct file_st *win32_splitter(DSO *dso, const char *filename,
 	int assume_last_is_dir)
 	{
 	struct file_st *result = NULL;
 	enum { IN_NODE, IN_DEVICE, IN_FILE } position;
 	const char *start = filename;
 	char last;

 	if (!filename)
 		{
 		DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
 		/*goto err;*/
 		return(NULL);
 		}

 	result = OPENSSL_malloc(sizeof(struct file_st));
 	if(result == NULL)
 		{
 		DSOerr(DSO_F_WIN32_SPLITTER,
 			ERR_R_MALLOC_FAILURE);
 		return(NULL);
 		}

 	memset(result, 0, sizeof(struct file_st));
 	position = IN_DEVICE;

 	if(filename[0] == '\\' && filename[1] == '\\'
 		|| filename[0] == '/' && filename[1] == '/')
 		{
 		position = IN_NODE;
 		filename += 2;
 		start = filename;
 		result->node = start;
 		}

 	do
 		{
 		last = filename[0];
 		switch(last)
 			{
 		case ':':
 			if(position != IN_DEVICE)
 				{
 				DSOerr(DSO_F_WIN32_SPLITTER,
 					DSO_R_INCORRECT_FILE_SYNTAX);
 				/*goto err;*/
 				return(NULL);
 				}
 			result->device = start;
 			result->devicelen = filename - start;
 			position = IN_FILE;
 			start = ++filename;
 			result->dir = start;
 			break;
 		case '\\':
 		case '/':
 			if(position == IN_NODE)
 				{
 				result->nodelen = filename - start;
 				position = IN_FILE;
 				start = ++filename;
 				result->dir = start;
 				}
 			else if(position == IN_DEVICE)
 				{
 				position = IN_FILE;
 				filename++;
 				result->dir = start;
 				result->dirlen = filename - start;
 				start = filename;
 				}
 			else
 				{
 				filename++;
 				result->dirlen += filename - start;
 				start = filename;
 				}
 			break;
 		case '\0':
 			if(position == IN_NODE)
 				{
 				result->nodelen = filename - start;
 				}
 			else
 				{
 				if(filename - start > 0)
 					{
 					if (assume_last_is_dir)
 						{
 						if (position == IN_DEVICE)
 							{
 							result->dir = start;
 							result->dirlen = 0;
 							}
 						result->dirlen +=
 							filename - start;
 						}
 					else
 						{
 						result->file = start;
 						result->filelen =
 							filename - start;
 						}
 					}
 				}
 			break;
 		default:
 			filename++;
 			break;
 			}
 		}
 	while(last);

 	if(!result->nodelen) result->node = NULL;
 	if(!result->devicelen) result->device = NULL;
 	if(!result->dirlen) result->dir = NULL;
 	if(!result->filelen) result->file = NULL;

 	return(result);
 	}

 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
 	{
 	int len = 0, offset = 0;
 	char *result = NULL;
 	const char *start;

 	if(!file_split)
 		{
 		DSOerr(DSO_F_WIN32_JOINER,
 				ERR_R_PASSED_NULL_PARAMETER);
 		return(NULL);
 		}
 	if(file_split->node)
 		{
 		len += 2 + file_split->nodelen;	/* 2 for starting \\ */
 		if(file_split->predir || file_split->dir || file_split->file)
 			len++;	/* 1 for ending \ */
 		}
 	else if(file_split->device)
 		{
 		len += file_split->devicelen + 1; /* 1 for ending : */
 		}
 	len += file_split->predirlen;
 	if(file_split->predir && (file_split->dir || file_split->file))
 		{
 		len++;	/* 1 for ending \ */
 		}
 	len += file_split->dirlen;
 	if(file_split->dir && file_split->file)
 		{
 		len++;	/* 1 for ending \ */
 		}
 	len += file_split->filelen;

 	if(!len)
 		{
 		DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
 		return(NULL);
 		}

 	result = OPENSSL_malloc(len + 1);
 	if (!result)
 		{
 		DSOerr(DSO_F_WIN32_JOINER,
 			ERR_R_MALLOC_FAILURE);
 		return(NULL);
 		}

 	if(file_split->node)
 		{
 		strcpy(&result[offset], "\\\\"); offset += 2;
 		strncpy(&result[offset], file_split->node,
 			file_split->nodelen); offset += file_split->nodelen;
 		if(file_split->predir || file_split->dir || file_split->file)
 			{
 			result[offset] = '\\'; offset++;
 			}
 		}
 	else if(file_split->device)
 		{
 		strncpy(&result[offset], file_split->device,
 			file_split->devicelen); offset += file_split->devicelen;
 		result[offset] = ':'; offset++;
 		}
 	start = file_split->predir;
 	while(file_split->predirlen > (start - file_split->predir))
 		{
 		const char *end = openssl_strnchr(start, '/',
 			file_split->predirlen - (start - file_split->predir));
 		if(!end)
 			end = start
 				+ file_split->predirlen
 				- (start - file_split->predir);
 		strncpy(&result[offset], start,
 			end - start); offset += end - start;
 		result[offset] = '\\'; offset++;
 		start = end + 1;
 		}
 #if 0 /* Not needed, since the directory converter above already appeneded
 	 a backslash */
 	if(file_split->predir && (file_split->dir || file_split->file))
 		{
 		result[offset] = '\\'; offset++;
 		}
 #endif
 	start = file_split->dir;
 	while(file_split->dirlen > (start - file_split->dir))
 		{
 		const char *end = openssl_strnchr(start, '/',
 			file_split->dirlen - (start - file_split->dir));
 		if(!end)
 			end = start
 				+ file_split->dirlen
 				- (start - file_split->dir);
 		strncpy(&result[offset], start,
 			end - start); offset += end - start;
 		result[offset] = '\\'; offset++;
 		start = end + 1;
 		}
 #if 0 /* Not needed, since the directory converter above already appeneded
 	 a backslash */
 	if(file_split->dir && file_split->file)
 		{
 		result[offset] = '\\'; offset++;
 		}
 #endif
 	strncpy(&result[offset], file_split->file,
 		file_split->filelen); offset += file_split->filelen;
 	result[offset] = '\0';
 	return(result);
 	}

 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
 	{
 	char *merged = NULL;
 	struct file_st *filespec1_split = NULL;
 	struct file_st *filespec2_split = NULL;

 	if(!filespec1 && !filespec2)
 		{
 		DSOerr(DSO_F_WIN32_MERGER,
 				ERR_R_PASSED_NULL_PARAMETER);
 		return(NULL);
 		}
 	if (!filespec2)
 		{
 		merged = OPENSSL_malloc(strlen(filespec1) + 1);
 		if(!merged)
 			{
 			DSOerr(DSO_F_WIN32_MERGER,
 				ERR_R_MALLOC_FAILURE);
 			return(NULL);
 			}
 		strcpy(merged, filespec1);
 		}
 	else if (!filespec1)
 		{
 		merged = OPENSSL_malloc(strlen(filespec2) + 1);
 		if(!merged)
 			{
 			DSOerr(DSO_F_WIN32_MERGER,
 				ERR_R_MALLOC_FAILURE);
 			return(NULL);
 			}
 		strcpy(merged, filespec2);
 		}
 	else
 		{
 		filespec1_split = win32_splitter(dso, filespec1, 0);
 		if (!filespec1_split)
 			{
 			DSOerr(DSO_F_WIN32_MERGER,
 				ERR_R_MALLOC_FAILURE);
 			return(NULL);
 			}
 		filespec2_split = win32_splitter(dso, filespec2, 1);
 		if (!filespec2_split)
 			{
 			DSOerr(DSO_F_WIN32_MERGER,
 				ERR_R_MALLOC_FAILURE);
 			OPENSSL_free(filespec1_split);
 			return(NULL);
 			}

 		/* Fill in into filespec1_split */
 		if (!filespec1_split->node && !filespec1_split->device)
 			{
 			filespec1_split->node = filespec2_split->node;
 			filespec1_split->nodelen = filespec2_split->nodelen;
 			filespec1_split->device = filespec2_split->device;
 			filespec1_split->devicelen = filespec2_split->devicelen;
 			}
 		if (!filespec1_split->dir)
 			{
 			filespec1_split->dir = filespec2_split->dir;
 			filespec1_split->dirlen = filespec2_split->dirlen;
 			}
 		else if (filespec1_split->dir[0] != '\\'
 			&& filespec1_split->dir[0] != '/')
 			{
 			filespec1_split->predir = filespec2_split->dir;
 			filespec1_split->predirlen = filespec2_split->dirlen;
 			}
 		if (!filespec1_split->file)
 			{
 			filespec1_split->file = filespec2_split->file;
 			filespec1_split->filelen = filespec2_split->filelen;
 			}

 		merged = win32_joiner(dso, filespec1_split);
 		}
 	return(merged);
 	}

 static char *win32_name_converter(DSO *dso, const char *filename)
 	{
 	char *translated;
 	int len, transform;

 	len = strlen(filename);
 	transform = ((strstr(filename, "/") == NULL) &&
 			(strstr(filename, "\\") == NULL) &&
 			(strstr(filename, ":") == NULL));
 	if(transform)
 		/* We will convert this to "%s.dll" */
 		translated = OPENSSL_malloc(len + 5);
 	else
 		/* We will simply duplicate filename */
 		translated = OPENSSL_malloc(len + 1);
 	if(translated == NULL)
 		{
 		DSOerr(DSO_F_WIN32_NAME_CONVERTER,
 				DSO_R_NAME_TRANSLATION_FAILED);
 		return(NULL);
 		}
 	if(transform)
 		sprintf(translated, "%s.dll", filename);
 	else
 		sprintf(translated, "%s", filename);
 	return(translated);
 	}

 static const char *openssl_strnchr(const char *string, int c, size_t len)
 	{
 	size_t i;
 	const char *p;
 	for (i = 0, p = string; i < len && *p; i++, p++)
 		{
 		if (*p == c)
 			return p;
 		}
 	return NULL;
 	}


 #endif /* OPENSSL_SYS_WIN32 */
	/* dso_win32.c -- mode:C; c-file-style: "eay" -- */
	/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
	* project 2000.
	*/
	/* ====================================================================
	* Copyright (c) 2000 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
	* licensing@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).
	*
	*/

	#include <stdio.h>
	#include <string.h>
	#include "cryptlib.h"
	#include <openssl/dso.h>

	#if !defined(DSO_WIN32)
	DSO_METHOD *DSO_METHOD_win32(void)
	{
	return NULL;
	}
	#else

	#ifdef _WIN32_WCE
	# if _WIN32_WCE < 300
	static FARPROC GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)
	{
	WCHAR lpProcNameW[64];
	int i;

	for (i=0;lpProcName[i] && i<64;i++)
	lpProcNameW[i] = (WCHAR)lpProcName[i];
	if (i==64) return NULL;
	lpProcNameW[i] = 0;

	return GetProcAddressW(hModule,lpProcNameW);
	}
	# endif
	# undef GetProcAddress
	# define GetProcAddress GetProcAddressA

	static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
	{
	WCHAR *fnamw;
	size_t len_0=strlen(lpLibFileName)+1,i;

	#ifdef _MSC_VER
	fnamw = (WCHAR )_alloca (len_0sizeof(WCHAR));
	#else
	fnamw = (WCHAR )alloca (len_0sizeof(WCHAR));
	#endif
	if (fnamw == NULL) return NULL;

	#if defined(_WIN32_WCE) && _WIN32_WCE>=101
	if (!MultiByteToWideChar(CP_ACP,0,lpLibFileName,len_0,fnamw,len_0))
	#endif
	for (i=0;i<len_0;i++) fnamw[i]=(WCHAR)lpLibFileName[i];

	return LoadLibraryW(fnamw);
	}
	#endif

	/* Part of the hack in "win32_load" ... */
	#define DSO_MAX_TRANSLATED_SIZE 256

	static int win32_load(DSO *dso);
	static int win32_unload(DSO *dso);
	static void win32_bind_var(DSO dso, const char *symname);
	static DSO_FUNC_TYPE win32_bind_func(DSO dso, const char symname);
	#if 0
	static int win32_unbind_var(DSO dso, char symname, void *symptr);
	static int win32_unbind_func(DSO dso, char symname, DSO_FUNC_TYPE symptr);
	static int win32_init(DSO *dso);
	static int win32_finish(DSO *dso);
	static long win32_ctrl(DSO dso, int cmd, long larg, void parg);
	#endif
	static char win32_name_converter(DSO dso, const char *filename);
	static char win32_merger(DSO dso, const char *filespec1,
	const char *filespec2);

	static const char openssl_strnchr(const char string, int c, size_t len);

	static DSO_METHOD dso_meth_win32 = {
	"OpenSSL 'win32' shared library method",
	win32_load,
	win32_unload,
	win32_bind_var,
	win32_bind_func,
	/* For now, "unbind" doesn't exist */
	#if 0
	NULL, /* unbind_var */
	NULL, /* unbind_func */
	#endif
	NULL, /* ctrl */
	win32_name_converter,
	win32_merger,
	NULL, /* init */
	NULL /* finish */
	};

	DSO_METHOD *DSO_METHOD_win32(void)
	{
	return(&dso_meth_win32);
	}

	/* For this DSO_METHOD, our meth_data STACK will contain;
	* (i) a pointer to the handle (HINSTANCE) returned from
	* LoadLibrary(), and copied.
	*/

	static int win32_load(DSO *dso)
	{
	HINSTANCE h = NULL, *p = NULL;
	/* See applicable comments from dso_dl.c */
	char *filename = DSO_convert_filename(dso, NULL);

	if(filename == NULL)
	{
	DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
	goto err;
	}
	h = LoadLibraryA(filename);
	if(h == NULL)
	{
	DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
	ERR_add_error_data(3, "filename(", filename, ")");
	goto err;
	}
	p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
	if(p == NULL)
	{
	DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
	goto err;
	}
	*p = h;
	if(!sk_push(dso->meth_data, (char *)p))
	{
	DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
	goto err;
	}
	/* Success */
	dso->loaded_filename = filename;
	return(1);
	err:
	/* Cleanup !*/
	if(filename != NULL)
	OPENSSL_free(filename);
	if(p != NULL)
	OPENSSL_free(p);
	if(h != NULL)
	FreeLibrary(h);
	return(0);
	}

	static int win32_unload(DSO *dso)
	{
	HINSTANCE *p;
	if(dso == NULL)
	{
	DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
	return(0);
	}
	if(sk_num(dso->meth_data) < 1)
	return(1);
	p = (HINSTANCE *)sk_pop(dso->meth_data);
	if(p == NULL)
	{
	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
	return(0);
	}
	if(!FreeLibrary(*p))
	{
	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
	/* We should push the value back onto the stack in
	* case of a retry. */
	sk_push(dso->meth_data, (char *)p);
	return(0);
	}
	/* Cleanup */
	OPENSSL_free(p);
	return(1);
	}

	/* Using GetProcAddress for variables? TODO: Check this out in
	* the Win32 API docs, there's probably a variant for variables. */
	static void win32_bind_var(DSO dso, const char *symname)
	{
	HINSTANCE *ptr;
	void *sym;

	if((dso == NULL) \|\| (symname == NULL))
	{
	DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
	return(NULL);
	}
	if(sk_num(dso->meth_data) < 1)
	{
	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
	return(NULL);
	}
	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	if(ptr == NULL)
	{
	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
	return(NULL);
	}
	sym = GetProcAddress(*ptr, symname);
	if(sym == NULL)
	{
	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
	ERR_add_error_data(3, "symname(", symname, ")");
	return(NULL);
	}
	return(sym);
	}

	static DSO_FUNC_TYPE win32_bind_func(DSO dso, const char symname)
	{
	HINSTANCE *ptr;
	void *sym;

	if((dso == NULL) \|\| (symname == NULL))
	{
	DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
	return(NULL);
	}
	if(sk_num(dso->meth_data) < 1)
	{
	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
	return(NULL);
	}
	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	if(ptr == NULL)
	{
	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
	return(NULL);
	}
	sym = GetProcAddress(*ptr, symname);
	if(sym == NULL)
	{
	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
	ERR_add_error_data(3, "symname(", symname, ")");
	return(NULL);
	}
	return((DSO_FUNC_TYPE)sym);
	}

	struct file_st
	{
	const char *node; int nodelen;
	const char *device; int devicelen;
	const char *predir; int predirlen;
	const char *dir; int dirlen;
	const char *file; int filelen;
	};

	static struct file_st win32_splitter(DSO dso, const char *filename,
	int assume_last_is_dir)
	{
	struct file_st *result = NULL;
	enum { IN_NODE, IN_DEVICE, IN_FILE } position;
	const char *start = filename;
	char last;

	if (!filename)
	{
	DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
	/goto err;/
	return(NULL);
	}

	result = OPENSSL_malloc(sizeof(struct file_st));
	if(result == NULL)
	{
	DSOerr(DSO_F_WIN32_SPLITTER,
	ERR_R_MALLOC_FAILURE);
	return(NULL);
	}

	memset(result, 0, sizeof(struct file_st));
	position = IN_DEVICE;

	if(filename[0] == '\\' && filename[1] == '\\'
	\|\| filename[0] == '/' && filename[1] == '/')
	{
	position = IN_NODE;
	filename += 2;
	start = filename;
	result->node = start;
	}

	do
	{
	last = filename[0];
	switch(last)
	{
	case ':':
	if(position != IN_DEVICE)
	{
	DSOerr(DSO_F_WIN32_SPLITTER,
	DSO_R_INCORRECT_FILE_SYNTAX);
	/goto err;/
	return(NULL);
	}
	result->device = start;
	result->devicelen = filename - start;
	position = IN_FILE;
	start = ++filename;
	result->dir = start;
	break;
	case '\\':
	case '/':
	if(position == IN_NODE)
	{
	result->nodelen = filename - start;
	position = IN_FILE;
	start = ++filename;
	result->dir = start;
	}
	else if(position == IN_DEVICE)
	{
	position = IN_FILE;
	filename++;
	result->dir = start;
	result->dirlen = filename - start;
	start = filename;
	}
	else
	{
	filename++;
	result->dirlen += filename - start;
	start = filename;
	}
	break;
	case '\0':
	if(position == IN_NODE)
	{
	result->nodelen = filename - start;
	}
	else
	{
	if(filename - start > 0)
	{
	if (assume_last_is_dir)
	{
	if (position == IN_DEVICE)
	{
	result->dir = start;
	result->dirlen = 0;
	}
	result->dirlen +=
	filename - start;
	}
	else
	{
	result->file = start;
	result->filelen =
	filename - start;
	}
	}
	}
	break;
	default:
	filename++;
	break;
	}
	}
	while(last);

	if(!result->nodelen) result->node = NULL;
	if(!result->devicelen) result->device = NULL;
	if(!result->dirlen) result->dir = NULL;
	if(!result->filelen) result->file = NULL;

	return(result);
	}

	static char win32_joiner(DSO dso, const struct file_st *file_split)
	{
	int len = 0, offset = 0;
	char *result = NULL;
	const char *start;

	if(!file_split)
	{
	DSOerr(DSO_F_WIN32_JOINER,
	ERR_R_PASSED_NULL_PARAMETER);
	return(NULL);
	}
	if(file_split->node)
	{
	len += 2 + file_split->nodelen; /* 2 for starting \\ */
	if(file_split->predir \|\| file_split->dir \|\| file_split->file)
	len++; /* 1 for ending \ */
	}
	else if(file_split->device)
	{
	len += file_split->devicelen + 1; /* 1 for ending : */
	}
	len += file_split->predirlen;
	if(file_split->predir && (file_split->dir \|\| file_split->file))
	{
	len++; /* 1 for ending \ */
	}
	len += file_split->dirlen;
	if(file_split->dir && file_split->file)
	{
	len++; /* 1 for ending \ */
	}
	len += file_split->filelen;

	if(!len)
	{
	DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
	return(NULL);
	}

	result = OPENSSL_malloc(len + 1);
	if (!result)
	{
	DSOerr(DSO_F_WIN32_JOINER,
	ERR_R_MALLOC_FAILURE);
	return(NULL);
	}

	if(file_split->node)
	{
	strcpy(&result[offset], "\\\\"); offset += 2;
	strncpy(&result[offset], file_split->node,
	file_split->nodelen); offset += file_split->nodelen;
	if(file_split->predir \|\| file_split->dir \|\| file_split->file)
	{
	result[offset] = '\\'; offset++;
	}
	}
	else if(file_split->device)
	{
	strncpy(&result[offset], file_split->device,
	file_split->devicelen); offset += file_split->devicelen;
	result[offset] = ':'; offset++;
	}
	start = file_split->predir;
	while(file_split->predirlen > (start - file_split->predir))
	{
	const char *end = openssl_strnchr(start, '/',
	file_split->predirlen - (start - file_split->predir));
	if(!end)
	end = start
	+ file_split->predirlen
	- (start - file_split->predir);
	strncpy(&result[offset], start,
	end - start); offset += end - start;
	result[offset] = '\\'; offset++;
	start = end + 1;
	}
	#if 0 /* Not needed, since the directory converter above already appeneded
	a backslash */
	if(file_split->predir && (file_split->dir \|\| file_split->file))
	{
	result[offset] = '\\'; offset++;
	}
	#endif
	start = file_split->dir;
	while(file_split->dirlen > (start - file_split->dir))
	{
	const char *end = openssl_strnchr(start, '/',
	file_split->dirlen - (start - file_split->dir));
	if(!end)
	end = start
	+ file_split->dirlen
	- (start - file_split->dir);
	strncpy(&result[offset], start,
	end - start); offset += end - start;
	result[offset] = '\\'; offset++;
	start = end + 1;
	}
	#if 0 /* Not needed, since the directory converter above already appeneded
	a backslash */
	if(file_split->dir && file_split->file)
	{
	result[offset] = '\\'; offset++;
	}
	#endif
	strncpy(&result[offset], file_split->file,
	file_split->filelen); offset += file_split->filelen;
	result[offset] = '\0';
	return(result);
	}

	static char win32_merger(DSO dso, const char filespec1, const char filespec2)
	{
	char *merged = NULL;
	struct file_st *filespec1_split = NULL;
	struct file_st *filespec2_split = NULL;

	if(!filespec1 && !filespec2)
	{
	DSOerr(DSO_F_WIN32_MERGER,
	ERR_R_PASSED_NULL_PARAMETER);
	return(NULL);
	}
	if (!filespec2)
	{
	merged = OPENSSL_malloc(strlen(filespec1) + 1);
	if(!merged)
	{
	DSOerr(DSO_F_WIN32_MERGER,
	ERR_R_MALLOC_FAILURE);
	return(NULL);
	}
	strcpy(merged, filespec1);
	}
	else if (!filespec1)
	{
	merged = OPENSSL_malloc(strlen(filespec2) + 1);
	if(!merged)
	{
	DSOerr(DSO_F_WIN32_MERGER,
	ERR_R_MALLOC_FAILURE);
	return(NULL);
	}
	strcpy(merged, filespec2);
	}
	else
	{
	filespec1_split = win32_splitter(dso, filespec1, 0);
	if (!filespec1_split)
	{
	DSOerr(DSO_F_WIN32_MERGER,
	ERR_R_MALLOC_FAILURE);
	return(NULL);
	}
	filespec2_split = win32_splitter(dso, filespec2, 1);
	if (!filespec2_split)
	{
	DSOerr(DSO_F_WIN32_MERGER,
	ERR_R_MALLOC_FAILURE);
	OPENSSL_free(filespec1_split);
	return(NULL);
	}

	/* Fill in into filespec1_split */
	if (!filespec1_split->node && !filespec1_split->device)
	{
	filespec1_split->node = filespec2_split->node;
	filespec1_split->nodelen = filespec2_split->nodelen;
	filespec1_split->device = filespec2_split->device;
	filespec1_split->devicelen = filespec2_split->devicelen;
	}
	if (!filespec1_split->dir)
	{
	filespec1_split->dir = filespec2_split->dir;
	filespec1_split->dirlen = filespec2_split->dirlen;
	}
	else if (filespec1_split->dir[0] != '\\'
	&& filespec1_split->dir[0] != '/')
	{
	filespec1_split->predir = filespec2_split->dir;
	filespec1_split->predirlen = filespec2_split->dirlen;
	}
	if (!filespec1_split->file)
	{
	filespec1_split->file = filespec2_split->file;
	filespec1_split->filelen = filespec2_split->filelen;
	}

	merged = win32_joiner(dso, filespec1_split);
	}
	return(merged);
	}

	static char win32_name_converter(DSO dso, const char *filename)
	{
	char *translated;
	int len, transform;

	len = strlen(filename);
	transform = ((strstr(filename, "/") == NULL) &&
	(strstr(filename, "\\") == NULL) &&
	(strstr(filename, ":") == NULL));
	if(transform)
	/* We will convert this to "%s.dll" */
	translated = OPENSSL_malloc(len + 5);
	else
	/* We will simply duplicate filename */
	translated = OPENSSL_malloc(len + 1);
	if(translated == NULL)
	{
	DSOerr(DSO_F_WIN32_NAME_CONVERTER,
	DSO_R_NAME_TRANSLATION_FAILED);
	return(NULL);
	}
	if(transform)
	sprintf(translated, "%s.dll", filename);
	else
	sprintf(translated, "%s", filename);
	return(translated);
	}

	static const char openssl_strnchr(const char string, int c, size_t len)
	{
	size_t i;
	const char *p;
	for (i = 0, p = string; i < len && *p; i++, p++)
	{
	if (*p == c)
	return p;
	}
	return NULL;
	}


	#endif /* OPENSSL_SYS_WIN32 */