[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 int win32_bind(DSO *dso, const char *symname, void **symptr);
#if 0
static int win32_unbind(DSO *dso, char *symname, void *symptr);
static int win32_init(DSO *dso);
static int win32_finish(DSO *dso);
#endif
static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);

static DSO_METHOD dso_meth_win32 = {
	"OpenSSL 'win32' shared library method",
	win32_load,
	win32_unload,
	win32_bind,
/* For now, "unbind" doesn't exist */
#if 0
	NULL, /* unbind */
#endif
	win32_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);
		OPENSSL_freeLibrary(h);
		return(0);
		}
	*p = h;
	if(!sk_push(dso->meth_data, (char *)p))
		{
		DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
		OPENSSL_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(!OPENSSL_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);
	}

static int win32_bind(DSO *dso, const char *symname, void **symptr)
	{
	HINSTANCE *ptr;
	void *sym;

	if((dso == NULL) || (symptr == NULL) || (symname == NULL))
		{
		DSOerr(DSO_F_WIN32_BIND,ERR_R_PASSED_NULL_PARAMETER);
		return(0);
		}
	if(sk_num(dso->meth_data) < 1)
		{
		DSOerr(DSO_F_WIN32_BIND,DSO_R_STACK_ERROR);
		return(0);
		}
	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	if(ptr == NULL)
		{
		DSOerr(DSO_F_WIN32_BIND,DSO_R_NULL_HANDLE);
		return(0);
		}
	sym = GetProcAddress(*ptr, symname);
	if(sym == NULL)
		{
		DSOerr(DSO_F_WIN32_BIND,DSO_R_SYM_FAILURE);
		return(0);
		}
	*symptr = sym;
	return(1);
	}

static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg)
        {
        if(dso == NULL)
                {
                DSOerr(DSO_F_WIN32_CTRL,ERR_R_PASSED_NULL_PARAMETER);
                return(-1);
                }
        switch(cmd)
                {
        case DSO_CTRL_GET_FLAGS:
                return dso->flags;
        case DSO_CTRL_SET_FLAGS:
                dso->flags = (int)larg;
                return(0);
        case DSO_CTRL_OR_FLAGS:
                dso->flags |= (int)larg;
                return(0);
        default:
                break;
                }
        DSOerr(DSO_F_WIN32_CTRL,DSO_R_UNKNOWN_COMMAND);
        return(-1);
        }

#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);
51175595	76	static int win32_bind(DSO dso, const char symname, void **symptr);
8f4fac7f GT	77	#if 0
	78	static int win32_unbind(DSO dso, char symname, void *symptr);
	79	static int win32_init(DSO *dso);
	80	static int win32_finish(DSO *dso);
	81	#endif
b9e63915	82	static long win32_ctrl(DSO dso, int cmd, long larg, void parg);
8f4fac7f GT	83
	84	static DSO_METHOD dso_meth_win32 = {
	85	"OpenSSL 'win32' shared library method",
	86	win32_load,
	87	win32_unload,
	88	win32_bind,
	89	/* For now, "unbind" doesn't exist */
	90	#if 0
	91	NULL, /* unbind */
	92	#endif
b9e63915	93	win32_ctrl,
8f4fac7f GT	94	NULL, /* init */
	95	NULL /* finish */
	96	};
	97
	98	DSO_METHOD *DSO_METHOD_win32(void)
	99	{
	100	return(&dso_meth_win32);
	101	}
	102
	103	/* For this DSO_METHOD, our meth_data STACK will contain;
	104	* (i) a pointer to the handle (HINSTANCE) returned from
b9e63915	105	* LoadLibrary(), and copied.
8f4fac7f GT	106	*/
8f4fac7f GT	107
51175595	108	static int win32_load(DSO dso, const char filename)
8f4fac7f GT	109	{
8f4fac7f GT	110	HINSTANCE h, *p;
b9e63915 GT	111	char translated[DSO_MAX_TRANSLATED_SIZE];
b9e63915 GT	112	int len;
8f4fac7f	113
b9e63915 GT	114	/* NB: This is a hideous hack, but I'm not yet sure what
	115	* to replace it with. This attempts to convert any filename,
	116	* that looks like it has no path information, into a
	117	* translated form, e. "blah" -> "blah.dll" ... I'm more
	118	* comfortable putting hacks into win32 code though ;-) */
	119	len = strlen(filename);
	120	if((dso->flags & DSO_FLAG_NAME_TRANSLATION) &&
	121	(len + 4 < DSO_MAX_TRANSLATED_SIZE) &&
e9e6b88b GT	122	(strstr(filename, "/") == NULL) &&
e9e6b88b GT	123	(strstr(filename, "\\") == NULL) &&
b9e63915 GT	124	(strstr(filename, ":") == NULL))
	125	{
	126	sprintf(translated, "%s.dll", filename);
	127	h = LoadLibrary(translated);
	128	}
	129	else
	130	h = LoadLibrary(filename);
8f4fac7f GT	131	if(h == NULL)
	132	{
	133	DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
	134	return(0);
	135	}
26a3a48d	136	p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
8f4fac7f GT	137	if(p == NULL)
	138	{
	139	DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
26a3a48d	140	OPENSSL_freeLibrary(h);
8f4fac7f GT	141	return(0);
	142	}
	143	*p = h;
	144	if(!sk_push(dso->meth_data, (char *)p))
	145	{
	146	DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
26a3a48d RL	147	OPENSSL_freeLibrary(h);
26a3a48d RL	148	OPENSSL_free(p);
8f4fac7f GT	149	return(0);
	150	}
	151	return(1);
	152	}
	153
	154	static int win32_unload(DSO *dso)
	155	{
	156	HINSTANCE *p;
	157	if(dso == NULL)
	158	{
	159	DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
	160	return(0);
	161	}
	162	if(sk_num(dso->meth_data) < 1)
ebbaebf7	163	return(1);
8f4fac7f GT	164	p = (HINSTANCE *)sk_pop(dso->meth_data);
	165	if(p == NULL)
	166	{
	167	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
	168	return(0);
	169	}
26a3a48d	170	if(!OPENSSL_freeLibrary(p))
8f4fac7f GT	171	{
	172	DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
	173	/* We should push the value back onto the stack in
	174	* case of a retry. */
	175	sk_push(dso->meth_data, (char *)p);
	176	return(0);
	177	}
	178	/* Cleanup */
26a3a48d	179	OPENSSL_free(p);
8f4fac7f GT	180	return(1);
	181	}
	182
51175595	183	static int win32_bind(DSO dso, const char symname, void **symptr)
8f4fac7f GT	184	{
	185	HINSTANCE *ptr;
	186	void *sym;
	187
	188	if((dso == NULL) \|\| (symptr == NULL) \|\| (symname == NULL))
	189	{
	190	DSOerr(DSO_F_WIN32_BIND,ERR_R_PASSED_NULL_PARAMETER);
	191	return(0);
	192	}
	193	if(sk_num(dso->meth_data) < 1)
	194	{
	195	DSOerr(DSO_F_WIN32_BIND,DSO_R_STACK_ERROR);
	196	return(0);
	197	}
	198	ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
	199	if(ptr == NULL)
	200	{
	201	DSOerr(DSO_F_WIN32_BIND,DSO_R_NULL_HANDLE);
	202	return(0);
	203	}
	204	sym = GetProcAddress(*ptr, symname);
	205	if(sym == NULL)
	206	{
	207	DSOerr(DSO_F_WIN32_BIND,DSO_R_SYM_FAILURE);
	208	return(0);
	209	}
	210	*symptr = sym;
	211	return(1);
	212	}
	213
8c343cf8	214	static long win32_ctrl(DSO dso, int cmd, long larg, void parg)
b9e63915 GT	215	{
	216	if(dso == NULL)
	217	{
	218	DSOerr(DSO_F_WIN32_CTRL,ERR_R_PASSED_NULL_PARAMETER);
	219	return(-1);
	220	}
	221	switch(cmd)
	222	{
	223	case DSO_CTRL_GET_FLAGS:
	224	return dso->flags;
	225	case DSO_CTRL_SET_FLAGS:
	226	dso->flags = (int)larg;
	227	return(0);
	228	case DSO_CTRL_OR_FLAGS:
	229	dso->flags \|= (int)larg;
	230	return(0);
	231	default:
	232	break;
	233	}
	234	DSOerr(DSO_F_WIN32_CTRL,DSO_R_UNKNOWN_COMMAND);
	235	return(-1);
	236	}
	237
8f4fac7f	238	#endif /* WIN32 */