[thirdparty/openssl.git] / crypto / dso / dso_win32.c

/* 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>

#ifndef OPENSSL_SYS_WIN32
DSO_METHOD *DSO_METHOD_win32(void)
	{
	return NULL;
	}
#else

/* 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 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 = LoadLibrary(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;

	if (!filename)
		{
		DSOerr(DSO_F_WIN32_MERGER,DSO_R_NO_FILENAME);
		goto err;
		}

	result = OPENSSL_malloc(sizeof(struct file_st));
	if(result == NULL)
		{
		DSOerr(DSO_F_WIN32_MERGER,
			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
		{
		switch(filename[0])
			{
		case ':':
			if(position != IN_DEVICE)
				{
				DSOerr(DSO_F_WIN32_MERGER,
					DSO_R_INCORRECT_FILE_SYNTAX);
				goto err;
				}
			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
				{
				filename++;
				result->dirlen += filename - start;
				}
			break;
		case '\0':
			if(position == IN_NODE)
				{
				result->nodelen = filename - start;
				}
			else
				{
				if(filename - start > 0)
					{
					if (assume_last_is_dir)
						{
						result->devicelen += filename - start;
						}
					else
						{
						result->file = start;
						result->filelen = filename - start;
						}
					}
				}
			break;
		default:
			filename++;
			break;
			}
		}
	while(*filename);

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

	return(result);
	}

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

	if(!file_split)
		{
		DSOerr(DSO_F_WIN32_MERGER,
				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_MERGER, DSO_R_EMPTY_FILE_STRUCTURE);
		return(NULL);
		}

	result = OPENSSL_malloc(len + 1);
	if (!result)
		{
		DSOerr(DSO_F_WIN32_MERGER,
			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 = 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(file_split->predir && (file_split->dir || file_split->file))
		{
		result[offset] = '\\'; offset++;
		}
	start = file_split->dir;
	while(file_split->dirlen > (start - file_split->dir))
		{
		const char *end = 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(file_split->dir && file_split->file)
		{
		result[offset] = '\\'; offset++;
		}
	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, 1);
		if (!filespec1_split)
			{
			DSOerr(DSO_F_WIN32_MERGER,
				ERR_R_MALLOC_FAILURE);
			return(NULL);
			}
		filespec2_split = win32_splitter(dso, filespec2, 0);
		if (!filespec1_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);
	}

#endif /* OPENSSL_SYS_WIN32 */
Commit	Line	Data
cbecb3ac	1	/* dso_win32.c -- mode:C; c-file-style: "eay" -- */
8f4fac7f GT	2	/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
	3	* project 2000.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in
	17	* the documentation and/or other materials provided with the
	18	* distribution.
	19	*
	20	* 3. All advertising materials mentioning features or use of this
	21	* software must display the following acknowledgment:
	22	* "This product includes software developed by the OpenSSL Project
	23	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	24	*
	25	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	26	* endorse or promote products derived from this software without
	27	* prior written permission. For written permission, please contact
	28	* licensing@OpenSSL.org.
	29	*
	30	* 5. Products derived from this software may not be called "OpenSSL"
	31	* nor may "OpenSSL" appear in their names without prior written
	32	* permission of the OpenSSL Project.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	39	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	40	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	43	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	44	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	45	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	46	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	48	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	49	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	50	* OF THE POSSIBILITY OF SUCH DAMAGE.
	51	* ====================================================================
	52	*
	53	* This product includes cryptographic software written by Eric Young
	54	* (eay@cryptsoft.com). This product includes software written by Tim
	55	* Hudson (tjh@cryptsoft.com).
	56	*
	57	*/
	58
	59	#include <stdio.h>
22a41547	60	#include <string.h>
8f4fac7f GT	61	#include "cryptlib.h"
	62	#include <openssl/dso.h>
	63
bc36ee62	64	#ifndef OPENSSL_SYS_WIN32
8f4fac7f GT	65	DSO_METHOD *DSO_METHOD_win32(void)
	66	{
	67	return NULL;
	68	}
	69	#else
	70
b9e63915 GT	71	/* Part of the hack in "win32_load" ... */
	72	#define DSO_MAX_TRANSLATED_SIZE 256
	73
51c8dc37	74	static int win32_load(DSO *dso);
8f4fac7f	75	static int win32_unload(DSO *dso);
e9a68cfb GT	76	static void win32_bind_var(DSO dso, const char *symname);
e9a68cfb GT	77	static DSO_FUNC_TYPE win32_bind_func(DSO dso, const char symname);
8f4fac7f	78	#if 0
e9a68cfb GT	79	static int win32_unbind_var(DSO dso, char symname, void *symptr);
e9a68cfb GT	80	static int win32_unbind_func(DSO dso, char symname, DSO_FUNC_TYPE symptr);
8f4fac7f GT	81	static int win32_init(DSO *dso);
8f4fac7f GT	82	static int win32_finish(DSO *dso);
b9e63915	83	static long win32_ctrl(DSO dso, int cmd, long larg, void parg);
75a382bd	84	#endif
51c8dc37	85	static char win32_name_converter(DSO dso, const char *filename);
cbecb3ac RL	86	static char win32_merger(DSO dso, const char *filespec1,
cbecb3ac RL	87	const char *filespec2);
8f4fac7f GT	88
	89	static DSO_METHOD dso_meth_win32 = {
	90	"OpenSSL 'win32' shared library method",
	91	win32_load,
	92	win32_unload,
e9a68cfb GT	93	win32_bind_var,
e9a68cfb GT	94	win32_bind_func,
8f4fac7f GT	95	/* For now, "unbind" doesn't exist */
8f4fac7f GT	96	#if 0
e9a68cfb GT	97	NULL, /* unbind_var */
e9a68cfb GT	98	NULL, /* unbind_func */
8f4fac7f	99	#endif
75a382bd	100	NULL, /* ctrl */
51c8dc37	101	win32_name_converter,
cbecb3ac	102	win32_merger,
8f4fac7f GT	103	NULL, /* init */
	104	NULL /* finish */
	105	};
	106
	107	DSO_METHOD *DSO_METHOD_win32(void)
	108	{
	109	return(&dso_meth_win32);
	110	}
	111
	112	/* For this DSO_METHOD, our meth_data STACK will contain;
	113	* (i) a pointer to the handle (HINSTANCE) returned from
b9e63915	114	* LoadLibrary(), and copied.
8f4fac7f GT	115	*/
8f4fac7f GT	116
51c8dc37	117	static int win32_load(DSO *dso)
8f4fac7f	118	{
51c8dc37 GT	119	HINSTANCE h = NULL, *p = NULL;
	120	/* See applicable comments from dso_dl.c */
	121	char *filename = DSO_convert_filename(dso, NULL);
	122
	123	if(filename == NULL)
b9e63915	124	{
51c8dc37 GT	125	DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
51c8dc37 GT	126	goto err;
b9e63915	127	}
51c8dc37	128	h = LoadLibrary(filename);
8f4fac7f GT	129	if(h == NULL)
	130	{
	131	DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
b7b6c047	132	ERR_add_error_data(3, "filename(", filename, ")");
51c8dc37	133	goto err;
8f4fac7f	134	}
26a3a48d	135	p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
8f4fac7f GT	136	if(p == NULL)
	137	{
	138	DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
51c8dc37	139	goto err;
8f4fac7f GT	140	}
	141	*p = h;
	142	if(!sk_push(dso->meth_data, (char *)p))
	143	{
	144	DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
51c8dc37	145	goto err;
8f4fac7f	146	}
51c8dc37 GT	147	/* Success */
51c8dc37 GT	148	dso->loaded_filename = filename;
8f4fac7f	149	return(1);
51c8dc37 GT	150	err:
	151	/* Cleanup !*/
	152	if(filename != NULL)
	153	OPENSSL_free(filename);
	154	if(p != NULL)
	155	OPENSSL_free(p);
	156	if(h != NULL)
	157	FreeLibrary(h);
	158	return(0);
8f4fac7f GT	159	}
	160
	161	static int win32_unload(DSO *dso)
	162	{
	163	HINSTANCE *p;
	164	if(dso == NULL)
	165	{
	166	DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
	167	return(0);
	168	}
	169	if(sk_num(dso->meth_data) < 1)
ebbaebf7	170	return(1);
8f4fac7f GT	171	p = (HINSTANCE *)sk_pop(dso->meth_data);
	172	if(p == NULL)
	173	{
	174	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
	175	return(0);
	176	}
8ba92cfe	177	if(!FreeLibrary(*p))
8f4fac7f GT	178	{
	179	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
	180	/* We should push the value back onto the stack in
	181	* case of a retry. */
	182	sk_push(dso->meth_data, (char *)p);
	183	return(0);
	184	}
	185	/* Cleanup */
26a3a48d	186	OPENSSL_free(p);
8f4fac7f GT	187	return(1);
	188	}
	189
e9a68cfb GT	190	/* Using GetProcAddress for variables? TODO: Check this out in
	191	* the Win32 API docs, there's probably a variant for variables. */
	192	static void win32_bind_var(DSO dso, const char *symname)
8f4fac7f GT	193	{
	194	HINSTANCE *ptr;
	195	void *sym;
	196
e9a68cfb	197	if((dso == NULL) \|\| (symname == NULL))
8f4fac7f	198	{
e9a68cfb GT	199	DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
e9a68cfb GT	200	return(NULL);
8f4fac7f GT	201	}
	202	if(sk_num(dso->meth_data) < 1)
	203	{
e9a68cfb GT	204	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
e9a68cfb GT	205	return(NULL);
8f4fac7f GT	206	}
	207	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	208	if(ptr == NULL)
	209	{
e9a68cfb GT	210	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
e9a68cfb GT	211	return(NULL);
8f4fac7f GT	212	}
	213	sym = GetProcAddress(*ptr, symname);
	214	if(sym == NULL)
	215	{
e9a68cfb	216	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
b7b6c047	217	ERR_add_error_data(3, "symname(", symname, ")");
e9a68cfb	218	return(NULL);
8f4fac7f	219	}
e9a68cfb GT	220	return(sym);
	221	}
	222
	223	static DSO_FUNC_TYPE win32_bind_func(DSO dso, const char symname)
	224	{
	225	HINSTANCE *ptr;
	226	void *sym;
	227
	228	if((dso == NULL) \|\| (symname == NULL))
	229	{
	230	DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
	231	return(NULL);
	232	}
	233	if(sk_num(dso->meth_data) < 1)
	234	{
	235	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
	236	return(NULL);
	237	}
	238	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	239	if(ptr == NULL)
	240	{
	241	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
	242	return(NULL);
	243	}
	244	sym = GetProcAddress(*ptr, symname);
	245	if(sym == NULL)
	246	{
	247	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
b7b6c047	248	ERR_add_error_data(3, "symname(", symname, ")");
e9a68cfb GT	249	return(NULL);
	250	}
	251	return((DSO_FUNC_TYPE)sym);
8f4fac7f GT	252	}
8f4fac7f GT	253
cbecb3ac RL	254	struct file_st
	255	{
	256	const char *node; int nodelen;
	257	const char *device; int devicelen;
	258	const char *predir; int predirlen;
	259	const char *dir; int dirlen;
	260	const char *file; int filelen;
	261	}
	262
	263	static struct file_st win32_splitter(DSO dso, const char *filename,
	264	int assume_last_is_dir)
	265	{
	266	struct file_st *result = NULL;
	267	enum { IN_NODE, IN_DEVICE, IN_FILE } position;
	268	const char *start = filename;
	269
	270	if (!filename)
	271	{
	272	DSOerr(DSO_F_WIN32_MERGER,DSO_R_NO_FILENAME);
	273	goto err;
	274	}
	275
	276	result = OPENSSL_malloc(sizeof(struct file_st));
	277	if(result == NULL)
	278	{
	279	DSOerr(DSO_F_WIN32_MERGER,
	280	ERR_R_MALLOC_FAILURE);
	281	return(NULL);
	282	}
	283
	284	memset(result, 0, sizeof(struct file_st));
	285	position = IN_DEVICE;
	286
	287	if(filename[0] == '\\' && filename[1] == '\\'
	288	\|\| filename[0] == '/' && filename[1] == '/')
	289	{
	290	position = IN_NODE;
	291	filename += 2;
	292	start = filename;
	293	result->node = start;
	294	}
	295
	296	do
	297	{
	298	switch(filename[0])
	299	{
	300	case ':':
	301	if(position != IN_DEVICE)
	302	{
	303	DSOerr(DSO_F_WIN32_MERGER,
	304	DSO_R_INCORRECT_FILE_SYNTAX);
	305	goto err;
	306	}
	307	result->device = start;
	308	result->devicelen = filename - start;
	309	position = IN_FILE;
	310	start = ++filename;
	311	result->dir = start;
	312	break;
	313	case '\\':
	314	case '/':
	315	if(position == IN_NODE)
	316	{
	317	result->nodelen = filename - start;
318	position = IN_FILE;
319	start = ++filename;
320	result->dir = start;
321	}
322	else
323	{
324	filename++;
325	result->dirlen += filename - start;
326	}
327	break;
328	case '\0':
329	if(position == IN_NODE)
330	{
331	result->nodelen = filename - start;
332	}
333	else
334	{
335	if(filename - start > 0)
336	{
337	if (assume_last_is_dir)
338	{
339	result->devicelen += filename - start;
340	}
341	else
342	{
343	result->file = start;
344	result->filelen = filename - start;
345	}
346	}
347	}
348	break;
349	default:
350	filename++;
351	break;
352	}
353	}
354	while(*filename);
355
356	if(!result->nodelen) result->node = NULL;
357	if(!result->devicelen) result->devicce = NULL;
358	if(!result->dirlen) result->dir = NULL;
359	if(!result->filelen) result->file = NULL;
360
361	return(result);
362	}
363
364	static char win32_joiner(DSO dso, const file_st *file_split)
365	{
366	int len = 0, offset = 0;
367	char *result = NULL;
368	const char *start;
369
370	if(!file_split)
371	{
372	DSOerr(DSO_F_WIN32_MERGER,
373	ERR_R_PASSED_NULL_PARAMETER);
374	return(NULL);
375	}
376	if(file_split->node)
377	{
378	len += 2 + file_split->nodelen; /* 2 for starting \\ */
379	if(file_split->predir \|\| file_split->dir \|\| file_split->file)
380	len++; /* 1 for ending \ */
381	}
382	else if(file_split->device)
383	{
384	len += file_split->devicelen + 1; /* 1 for ending : */
385	}
386	len += file_split->predirlen;
387	if(file_split->predir && (file_split->dir \|\| file_split->file))
388	{
389	len++; /* 1 for ending \ */
390	}
391	len += file_split->dirlen;
392	if(file_split->dir && file_split->file)
393	{
394	len++; /* 1 for ending \ */
395	}
396	len += file_split->filelen;
397
398	if(!len)
399	{
400	DSOerr(DSO_F_WIN32_MERGER, DSO_R_EMPTY_FILE_STRUCTURE);
401	return(NULL);
402	}
403
404	result = OPENSSL_malloc(len + 1);
405	if (!result)
406	{
407	DSOerr(DSO_F_WIN32_MERGER,
408	ERR_R_MALLOC_FAILURE);
409	return(NULL);
410	}
411
412	if(file_split->node)
413	{
414	strcpy(&result[offset], "\\\\"); offset += 2;
415	strncpy(&result[offset], file_split->node,
416	file_split->nodelen); offset += file_split->nodelen;
417	if(file_split->predir \|\| file_split->dir \|\| file_split->file)
418	{
419	result[offset] = '\\'; offset++;
420	}
421	}
422	else if(file_split->device)
423	{
424	strncpy(&result[offset], file_split->device,
425	file_split->devicelen); offset += file_split->devicelen;
426	result[offset] = ':'; offset++;
427	}
428	start = file_split->predir;
429	while(file_split->predirlen > (start - file_split->predir))
430	{
431	const char *end = strnchr(start, '/',
432	file_split->predirlen - (start - file_split->predir));
433	if(!end)
434	end = start
435	+ file_split->predirlen
436	- (start - file_split->predir);
437	strncpy(&result[offset], start,
438	end - start); offset += end - start;
439	result[offset] = '\\'; offset++;
440	start = end + 1;
441	}
442	if(file_split->predir && (file_split->dir \|\| file_split->file))
443	{
444	result[offset] = '\\'; offset++;
445	}
446	start = file_split->dir;
447	while(file_split->dirlen > (start - file_split->dir))
448	{
449	const char *end = strnchr(start, '/',
450	file_split->dirlen - (start - file_split->dir));
451	if(!end)
452	end = start
453	+ file_split->dirlen
454	- (start - file_split->dir);
455	strncpy(&result[offset], start,
456	end - start); offset += end - start;
457	result[offset] = '\\'; offset++;
458	start = end + 1;
459	}
460	if(file_split->dir && file_split->file)
461	{
462	result[offset] = '\\'; offset++;
463	}
464	strncpy(&result[offset], file_split->file,
465	file_split->filelen); offset += file_split->filelen;
466	result[offset] = '\0';
467	return(result);
468	}
469
470	static char win32_merger(DSO dso, const char filespec1, const char filespec2)
471	{
472	char *merged = NULL;
473	struct file_st *filespec1_split = NULL;
474	struct file_st *filespec2_split = NULL;
475
476	if(!filespec1 && !filespec2)
477	{
478	DSOerr(DSO_F_WIN32_MERGER,
479	ERR_R_PASSED_NULL_PARAMETER);
480	return(NULL);
481	}
482	if (!filespec2)
483	{
484	merged = OPENSSL_malloc(strlen(filespec1) + 1);
485	if(!merged)
486	{
487	DSOerr(DSO_F_WIN32_MERGER,
488	ERR_R_MALLOC_FAILURE);
489	return(NULL);
490	}
491	strcpy(merged, filespec1);
492	}
493	else if (!filespec1)
494	{
495	merged = OPENSSL_malloc(strlen(filespec2) + 1);
496	if(!merged)
497	{
498	DSOerr(DSO_F_WIN32_MERGER,
499	ERR_R_MALLOC_FAILURE);
500	return(NULL);
501	}
502	strcpy(merged, filespec2);
503	}
504	else
505	{
506	filespec1_split = win32_splitter(dso, filespec1, 1);
507	if (!filespec1_split)
508	{
509	DSOerr(DSO_F_WIN32_MERGER,
510	ERR_R_MALLOC_FAILURE);
511	return(NULL);
512	}
513	filespec2_split = win32_splitter(dso, filespec2, 0);
514	if (!filespec1_split)
515	{
516	DSOerr(DSO_F_WIN32_MERGER,
517	ERR_R_MALLOC_FAILURE);
518	OPENSSL_free(filespec1_split);
519	return(NULL);
520	}
521
522	/* Fill in into filespec1_split */
523	if (!filespec1_split->node && !filespec1_split->device)
524	{
525	filespec1_split->node = filespec2_split->node;
526	filespec1_split->nodelen = filespec2_split->nodelen;
527	filespec1_split->device = filespec2_split->device;
528	filespec1_split->devicelen = filespec2_split->devicelen;
529	}
530	if (!filespec1_split->dir)
531	{
532	filespec1_split->dir = filespec2_split->dir;
533	filespec1_split->dirlen = filespec2_split->dirlen;
534	}
535	else if (filespec1_split->dir[0] != '\\'
536	&& filespec1_split->dir[0] != '/')
537	{
538	filespec1_split->predir = filespec2_split->dir;
539	filespec1_split->predirlen = filespec2_split->dirlen;
540	}
541	if (!filespec1_split->file)
542	{
543	filespec1_split->file = filespec2_split->file;
544	filespec1_split->filelen = filespec2_split->filelen;
545	}
546
547	merged = win32_joiner(dso, filespec1_split);
548	}
549	return(merged);
550	}
551
51c8dc37 GT	552	static char win32_name_converter(DSO dso, const char *filename)
	553	{
	554	char *translated;
	555	int len, transform;
	556
	557	len = strlen(filename);
	558	transform = ((strstr(filename, "/") == NULL) &&
	559	(strstr(filename, "\\") == NULL) &&
	560	(strstr(filename, ":") == NULL));
	561	if(transform)
	562	/* We will convert this to "%s.dll" */
	563	translated = OPENSSL_malloc(len + 5);
	564	else
	565	/* We will simply duplicate filename */
	566	translated = OPENSSL_malloc(len + 1);
	567	if(translated == NULL)
	568	{
	569	DSOerr(DSO_F_WIN32_NAME_CONVERTER,
	570	DSO_R_NAME_TRANSLATION_FAILED);
	571	return(NULL);
	572	}
	573	if(transform)
	574	sprintf(translated, "%s.dll", filename);
	575	else
	576	sprintf(translated, "%s", filename);
	577	return(translated);
	578	}
	579
bc36ee62	580	#endif /* OPENSSL_SYS_WIN32 */