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

/* dso_win32.c */
/* 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 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, const char *filename);
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 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 */
	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, const char *filename)
	{
	HINSTANCE h, *p;
	char translated[DSO_MAX_TRANSLATED_SIZE];
	int len;

	/* NB: This is a hideous hack, but I'm not yet sure what
	 * to replace it with. This attempts to convert any filename,
	 * that looks like it has no path information, into a
	 * translated form, e. "blah" -> "blah.dll" ... I'm more
	 * comfortable putting hacks into win32 code though ;-) */
	len = strlen(filename);
	if((dso->flags & DSO_FLAG_NAME_TRANSLATION) &&
			(len + 4 < DSO_MAX_TRANSLATED_SIZE) &&
			(strstr(filename, "/") == NULL) &&
			(strstr(filename, "\\") == NULL) &&
			(strstr(filename, ":") == NULL))
		{
		sprintf(translated, "%s.dll", filename);
		h = LoadLibrary(translated);
		}
	else
		h = LoadLibrary(filename);
	if(h == NULL)
		{
		DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
		return(0);
		}
	p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
	if(p == NULL)
		{
		DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
		FreeLibrary(h);
		return(0);
		}
	*p = h;
	if(!sk_push(dso->meth_data, (char *)p))
		{
		DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
		FreeLibrary(h);
		OPENSSL_free(p);
		return(0);
		}
	return(1);
	}

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);
		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);
		return(NULL);
		}
	return((DSO_FUNC_TYPE)sym);
	}

#endif /* WIN32 */
Commit	Line	Data
8f4fac7f GT	1	/* dso_win32.c */
	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
	64	#ifndef WIN32
	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
51175595	74	static int win32_load(DSO dso, const char filename);
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
8f4fac7f GT	85
	86	static DSO_METHOD dso_meth_win32 = {
	87	"OpenSSL 'win32' shared library method",
	88	win32_load,
	89	win32_unload,
e9a68cfb GT	90	win32_bind_var,
e9a68cfb GT	91	win32_bind_func,
8f4fac7f GT	92	/* For now, "unbind" doesn't exist */
8f4fac7f GT	93	#if 0
e9a68cfb GT	94	NULL, /* unbind_var */
e9a68cfb GT	95	NULL, /* unbind_func */
8f4fac7f	96	#endif
75a382bd	97	NULL, /* ctrl */
8f4fac7f GT	98	NULL, /* init */
	99	NULL /* finish */
	100	};
	101
	102	DSO_METHOD *DSO_METHOD_win32(void)
	103	{
	104	return(&dso_meth_win32);
	105	}
	106
	107	/* For this DSO_METHOD, our meth_data STACK will contain;
	108	* (i) a pointer to the handle (HINSTANCE) returned from
b9e63915	109	* LoadLibrary(), and copied.
8f4fac7f GT	110	*/
8f4fac7f GT	111
51175595	112	static int win32_load(DSO dso, const char filename)
8f4fac7f GT	113	{
8f4fac7f GT	114	HINSTANCE h, *p;
b9e63915 GT	115	char translated[DSO_MAX_TRANSLATED_SIZE];
b9e63915 GT	116	int len;
8f4fac7f	117
b9e63915 GT	118	/* NB: This is a hideous hack, but I'm not yet sure what
	119	* to replace it with. This attempts to convert any filename,
	120	* that looks like it has no path information, into a
	121	* translated form, e. "blah" -> "blah.dll" ... I'm more
	122	* comfortable putting hacks into win32 code though ;-) */
	123	len = strlen(filename);
	124	if((dso->flags & DSO_FLAG_NAME_TRANSLATION) &&
	125	(len + 4 < DSO_MAX_TRANSLATED_SIZE) &&
e9e6b88b GT	126	(strstr(filename, "/") == NULL) &&
e9e6b88b GT	127	(strstr(filename, "\\") == NULL) &&
b9e63915 GT	128	(strstr(filename, ":") == NULL))
	129	{
	130	sprintf(translated, "%s.dll", filename);
	131	h = LoadLibrary(translated);
	132	}
	133	else
	134	h = LoadLibrary(filename);
8f4fac7f GT	135	if(h == NULL)
	136	{
	137	DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
	138	return(0);
	139	}
26a3a48d	140	p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
8f4fac7f GT	141	if(p == NULL)
	142	{
	143	DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
8ba92cfe	144	FreeLibrary(h);
8f4fac7f GT	145	return(0);
	146	}
	147	*p = h;
	148	if(!sk_push(dso->meth_data, (char *)p))
	149	{
	150	DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
8ba92cfe	151	FreeLibrary(h);
26a3a48d	152	OPENSSL_free(p);
8f4fac7f GT	153	return(0);
	154	}
	155	return(1);
	156	}
	157
	158	static int win32_unload(DSO *dso)
	159	{
	160	HINSTANCE *p;
	161	if(dso == NULL)
	162	{
	163	DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
	164	return(0);
	165	}
	166	if(sk_num(dso->meth_data) < 1)
ebbaebf7	167	return(1);
8f4fac7f GT	168	p = (HINSTANCE *)sk_pop(dso->meth_data);
	169	if(p == NULL)
	170	{
	171	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
	172	return(0);
	173	}
8ba92cfe	174	if(!FreeLibrary(*p))
8f4fac7f GT	175	{
	176	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
	177	/* We should push the value back onto the stack in
	178	* case of a retry. */
	179	sk_push(dso->meth_data, (char *)p);
	180	return(0);
	181	}
	182	/* Cleanup */
26a3a48d	183	OPENSSL_free(p);
8f4fac7f GT	184	return(1);
	185	}
	186
e9a68cfb GT	187	/* Using GetProcAddress for variables? TODO: Check this out in
	188	* the Win32 API docs, there's probably a variant for variables. */
	189	static void win32_bind_var(DSO dso, const char *symname)
8f4fac7f GT	190	{
	191	HINSTANCE *ptr;
	192	void *sym;
	193
e9a68cfb	194	if((dso == NULL) \|\| (symname == NULL))
8f4fac7f	195	{
e9a68cfb GT	196	DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
e9a68cfb GT	197	return(NULL);
8f4fac7f GT	198	}
	199	if(sk_num(dso->meth_data) < 1)
	200	{
e9a68cfb GT	201	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
e9a68cfb GT	202	return(NULL);
8f4fac7f GT	203	}
	204	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	205	if(ptr == NULL)
	206	{
e9a68cfb GT	207	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
e9a68cfb GT	208	return(NULL);
8f4fac7f GT	209	}
	210	sym = GetProcAddress(*ptr, symname);
	211	if(sym == NULL)
	212	{
e9a68cfb GT	213	DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
e9a68cfb GT	214	return(NULL);
8f4fac7f	215	}
e9a68cfb GT	216	return(sym);
	217	}
	218
	219	static DSO_FUNC_TYPE win32_bind_func(DSO dso, const char symname)
	220	{
	221	HINSTANCE *ptr;
	222	void *sym;
	223
	224	if((dso == NULL) \|\| (symname == NULL))
	225	{
	226	DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
	227	return(NULL);
	228	}
	229	if(sk_num(dso->meth_data) < 1)
	230	{
	231	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
	232	return(NULL);
	233	}
	234	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	235	if(ptr == NULL)
	236	{
	237	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
	238	return(NULL);
	239	}
	240	sym = GetProcAddress(*ptr, symname);
	241	if(sym == NULL)
	242	{
	243	DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
	244	return(NULL);
	245	}
	246	return((DSO_FUNC_TYPE)sym);
8f4fac7f GT	247	}
	248
	249	#endif /* WIN32 */