Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/dso/dso_lib.c	Lines:	0	189	0.0 %
Date:	2016-12-06	Branches:	0	116	0.0 %


/* $OpenBSD: dso_lib.c,v 1.18 2014/07/11 08:44:48 jsing Exp $ */
/* 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 <openssl/crypto.h>
#include <openssl/dso.h>
#include <openssl/err.h>

static DSO_METHOD *default_DSO_meth = NULL;

DSO *
DSO_new(void)
{
	return (DSO_new_method(NULL));
}

void
DSO_set_default_method(DSO_METHOD *meth)
{
	default_DSO_meth = meth;
}

DSO_METHOD *
DSO_get_default_method(void)
{
	return (default_DSO_meth);
}

DSO_METHOD *
DSO_get_method(DSO *dso)
{
	return (dso->meth);
}

DSO_METHOD *
DSO_set_method(DSO *dso, DSO_METHOD *meth)
{
	DSO_METHOD *mtmp;

	mtmp = dso->meth;
	dso->meth = meth;
	return (mtmp);
}

DSO *
DSO_new_method(DSO_METHOD *meth)
{
	DSO *ret;

	if (default_DSO_meth == NULL)
		/* We default to DSO_METH_openssl() which in turn defaults
		 * to stealing the "best available" method. Will fallback
		 * to DSO_METH_null() in the worst case. */
		default_DSO_meth = DSO_METHOD_openssl();
	ret = calloc(1, sizeof(DSO));
	if (ret == NULL) {
		DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
		return (NULL);
	}
	ret->meth_data = sk_void_new_null();
	if (ret->meth_data == NULL) {
		/* sk_new doesn't generate any errors so we do */
		DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
		free(ret);
		return (NULL);
	}
	if (meth == NULL)
		ret->meth = default_DSO_meth;
	else
		ret->meth = meth;
	ret->references = 1;
	if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
		free(ret);
		ret = NULL;
	}
	return (ret);
}

int
DSO_free(DSO *dso)
{
	int i;

	if (dso == NULL) {
		DSOerr(DSO_F_DSO_FREE, ERR_R_PASSED_NULL_PARAMETER);
		return (0);
	}

	i = CRYPTO_add(&dso->references, -1, CRYPTO_LOCK_DSO);
	if (i > 0)
		return (1);

	if ((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) {
		DSOerr(DSO_F_DSO_FREE, DSO_R_UNLOAD_FAILED);
		return (0);
	}

	if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
		DSOerr(DSO_F_DSO_FREE, DSO_R_FINISH_FAILED);
		return (0);
	}

	sk_void_free(dso->meth_data);
	free(dso->filename);
	free(dso->loaded_filename);
	free(dso);
	return (1);
}

int
DSO_flags(DSO *dso)
{
	return ((dso == NULL) ? 0 : dso->flags);
}


int
DSO_up_ref(DSO *dso)
{
	if (dso == NULL) {
		DSOerr(DSO_F_DSO_UP_REF, ERR_R_PASSED_NULL_PARAMETER);
		return (0);
	}

	CRYPTO_add(&dso->references, 1, CRYPTO_LOCK_DSO);
	return (1);
}

DSO *
DSO_load(DSO *dso, const char *filename, DSO_METHOD *meth, int flags)
{
	DSO *ret;
	int allocated = 0;

	if (dso == NULL) {
		ret = DSO_new_method(meth);
		if (ret == NULL) {
			DSOerr(DSO_F_DSO_LOAD, ERR_R_MALLOC_FAILURE);
			goto err;
		}
		allocated = 1;
		/* Pass the provided flags to the new DSO object */
		if (DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0) {
			DSOerr(DSO_F_DSO_LOAD, DSO_R_CTRL_FAILED);
			goto err;
		}
	} else
		ret = dso;
	/* Don't load if we're currently already loaded */
	if (ret->filename != NULL) {
		DSOerr(DSO_F_DSO_LOAD, DSO_R_DSO_ALREADY_LOADED);
		goto err;
	}
	/* filename can only be NULL if we were passed a dso that already has
	 * one set. */
	if (filename != NULL)
		if (!DSO_set_filename(ret, filename)) {
		DSOerr(DSO_F_DSO_LOAD, DSO_R_SET_FILENAME_FAILED);
		goto err;
	}
	filename = ret->filename;
	if (filename == NULL) {
		DSOerr(DSO_F_DSO_LOAD, DSO_R_NO_FILENAME);
		goto err;
	}
	if (ret->meth->dso_load == NULL) {
		DSOerr(DSO_F_DSO_LOAD, DSO_R_UNSUPPORTED);
		goto err;
	}
	if (!ret->meth->dso_load(ret)) {
		DSOerr(DSO_F_DSO_LOAD, DSO_R_LOAD_FAILED);
		goto err;
	}
	/* Load succeeded */
	return (ret);

err:
	if (allocated)
		DSO_free(ret);
	return (NULL);
}

void *
DSO_bind_var(DSO *dso, const char *symname)
{
	void *ret = NULL;

	if ((dso == NULL) || (symname == NULL)) {
		DSOerr(DSO_F_DSO_BIND_VAR, ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if (dso->meth->dso_bind_var == NULL) {
		DSOerr(DSO_F_DSO_BIND_VAR, DSO_R_UNSUPPORTED);
		return (NULL);
	}
	if ((ret = dso->meth->dso_bind_var(dso, symname)) == NULL) {
		DSOerr(DSO_F_DSO_BIND_VAR, DSO_R_SYM_FAILURE);
		return (NULL);
	}
	/* Success */
	return (ret);
}

DSO_FUNC_TYPE
DSO_bind_func(DSO *dso, const char *symname)
{
	DSO_FUNC_TYPE ret = NULL;

	if ((dso == NULL) || (symname == NULL)) {
		DSOerr(DSO_F_DSO_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if (dso->meth->dso_bind_func == NULL) {
		DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_UNSUPPORTED);
		return (NULL);
	}
	if ((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) {
		DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_SYM_FAILURE);
		return (NULL);
	}
	/* Success */
	return (ret);
}

/* I don't really like these *_ctrl functions very much to be perfectly
 * honest. For one thing, I think I have to return a negative value for
 * any error because possible DSO_ctrl() commands may return values
 * such as "size"s that can legitimately be zero (making the standard
 * "if(DSO_cmd(...))" form that works almost everywhere else fail at
 * odd times. I'd prefer "output" values to be passed by reference and
 * the return value as success/failure like usual ... but we conform
 * when we must... :-) */
long
DSO_ctrl(DSO *dso, int cmd, long larg, void *parg)
{
	if (dso == NULL) {
		DSOerr(DSO_F_DSO_CTRL, ERR_R_PASSED_NULL_PARAMETER);
		return (-1);
	}
	/* We should intercept certain generic commands and only pass control
	 * to the method-specific ctrl() function if it's something we don't
	 * handle. */
	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;
	}
	if ((dso->meth == NULL) || (dso->meth->dso_ctrl == NULL)) {
		DSOerr(DSO_F_DSO_CTRL, DSO_R_UNSUPPORTED);
		return (-1);
	}
	return (dso->meth->dso_ctrl(dso, cmd, larg, parg));
}

int
DSO_set_name_converter(DSO *dso, DSO_NAME_CONVERTER_FUNC cb,
    DSO_NAME_CONVERTER_FUNC *oldcb)
{
	if (dso == NULL) {
		DSOerr(DSO_F_DSO_SET_NAME_CONVERTER,
		    ERR_R_PASSED_NULL_PARAMETER);
		return (0);
	}
	if (oldcb)
		*oldcb = dso->name_converter;
	dso->name_converter = cb;
	return (1);
}

const char *
DSO_get_filename(DSO *dso)
{
	if (dso == NULL) {
		DSOerr(DSO_F_DSO_GET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	return (dso->filename);
}

int
DSO_set_filename(DSO *dso, const char *filename)
{
	char *copied;

	if ((dso == NULL) || (filename == NULL)) {
		DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
		return (0);
	}
	if (dso->loaded_filename) {
		DSOerr(DSO_F_DSO_SET_FILENAME, DSO_R_DSO_ALREADY_LOADED);
		return (0);
	}
	/* We'll duplicate filename */
	copied = strdup(filename);
	if (copied == NULL) {
		DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_MALLOC_FAILURE);
		return (0);
	}
	free(dso->filename);
	dso->filename = copied;
	return (1);
}

char *
DSO_merge(DSO *dso, const char *filespec1, const char *filespec2)
{
	char *result = NULL;

	if (dso == NULL || filespec1 == NULL) {
		DSOerr(DSO_F_DSO_MERGE, ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
		if (dso->merger != NULL)
			result = dso->merger(dso, filespec1, filespec2);
		else if (dso->meth->dso_merger != NULL)
			result = dso->meth->dso_merger(dso,
			    filespec1, filespec2);
	}
	return (result);
}

char *
DSO_convert_filename(DSO *dso, const char *filename)
{
	char *result = NULL;

	if (dso == NULL) {
		DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if (filename == NULL)
		filename = dso->filename;
	if (filename == NULL) {
		DSOerr(DSO_F_DSO_CONVERT_FILENAME, DSO_R_NO_FILENAME);
		return (NULL);
	}
	if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
		if (dso->name_converter != NULL)
			result = dso->name_converter(dso, filename);
		else if (dso->meth->dso_name_converter != NULL)
			result = dso->meth->dso_name_converter(dso, filename);
	}
	if (result == NULL) {
		result = strdup(filename);
		if (result == NULL) {
			DSOerr(DSO_F_DSO_CONVERT_FILENAME,
			    ERR_R_MALLOC_FAILURE);
			return (NULL);
		}
	}
	return (result);
}

const char *
DSO_get_loaded_filename(DSO *dso)
{
	if (dso == NULL) {
		DSOerr(DSO_F_DSO_GET_LOADED_FILENAME,
		    ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	return (dso->loaded_filename);
}

int
DSO_pathbyaddr(void *addr, char *path, int sz)
{
	DSO_METHOD *meth = default_DSO_meth;
	if (meth == NULL)
		meth = DSO_METHOD_openssl();
	if (meth->pathbyaddr == NULL) {
		DSOerr(DSO_F_DSO_PATHBYADDR, DSO_R_UNSUPPORTED);
		return -1;
	}
	return (*meth->pathbyaddr)(addr, path, sz);
}

void *
DSO_global_lookup(const char *name)
{
	DSO_METHOD *meth = default_DSO_meth;
	if (meth == NULL)
		meth = DSO_METHOD_openssl();
	if (meth->globallookup == NULL) {
		DSOerr(DSO_F_DSO_GLOBAL_LOOKUP, DSO_R_UNSUPPORTED);
		return NULL;
	}
	return (*meth->globallookup)(name);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: dso_lib.c,v 1.18 2014/07/11 08:44:48 jsing Exp $ */
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>
60			#include <string.h>
61
62			#include <openssl/crypto.h>
63			#include <openssl/dso.h>
64			#include <openssl/err.h>
65
66			static DSO_METHOD *default_DSO_meth = NULL;
67
68			DSO *
69			DSO_new(void)
70			{
71			return (DSO_new_method(NULL));
72			}
73
74			void
75			DSO_set_default_method(DSO_METHOD *meth)
76			{
77			default_DSO_meth = meth;
78			}
79
80			DSO_METHOD *
81			DSO_get_default_method(void)
82			{
83			return (default_DSO_meth);
84			}
85
86			DSO_METHOD *
87			DSO_get_method(DSO *dso)
88			{
89			return (dso->meth);
90			}
91
92			DSO_METHOD *
93			DSO_set_method(DSO dso, DSO_METHOD meth)
94			{
95			DSO_METHOD *mtmp;
96
97			mtmp = dso->meth;
98			dso->meth = meth;
99			return (mtmp);
100			}
101
102			DSO *
103			DSO_new_method(DSO_METHOD *meth)
104			{
105			DSO *ret;
106
107			if (default_DSO_meth == NULL)
108			/* We default to DSO_METH_openssl() which in turn defaults
109			* to stealing the "best available" method. Will fallback
110			* to DSO_METH_null() in the worst case. */
111			default_DSO_meth = DSO_METHOD_openssl();
112			ret = calloc(1, sizeof(DSO));
113			if (ret == NULL) {
114			DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
115			return (NULL);
116			}
117			ret->meth_data = sk_void_new_null();
118			if (ret->meth_data == NULL) {
119			/* sk_new doesn't generate any errors so we do */
120			DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
121			free(ret);
122			return (NULL);
123			}
124			if (meth == NULL)
125			ret->meth = default_DSO_meth;
126			else
127			ret->meth = meth;
128			ret->references = 1;
129			if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
130			free(ret);
131			ret = NULL;
132			}
133			return (ret);
134			}
135
136			int
137			DSO_free(DSO *dso)
138			{
139			int i;
140
141			if (dso == NULL) {
142			DSOerr(DSO_F_DSO_FREE, ERR_R_PASSED_NULL_PARAMETER);
143			return (0);
144			}
145
146			i = CRYPTO_add(&dso->references, -1, CRYPTO_LOCK_DSO);
147			if (i > 0)
148			return (1);
149
150			if ((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) {
151			DSOerr(DSO_F_DSO_FREE, DSO_R_UNLOAD_FAILED);
152			return (0);
153			}
154
155			if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
156			DSOerr(DSO_F_DSO_FREE, DSO_R_FINISH_FAILED);
157			return (0);
158			}
159
160			sk_void_free(dso->meth_data);
161			free(dso->filename);
162			free(dso->loaded_filename);
163			free(dso);
164			return (1);
165			}
166
167			int
168			DSO_flags(DSO *dso)
169			{
170			return ((dso == NULL) ? 0 : dso->flags);
171			}
172
173
174			int
175			DSO_up_ref(DSO *dso)
176			{
177			if (dso == NULL) {
178			DSOerr(DSO_F_DSO_UP_REF, ERR_R_PASSED_NULL_PARAMETER);
179			return (0);
180			}
181
182			CRYPTO_add(&dso->references, 1, CRYPTO_LOCK_DSO);
183			return (1);
184			}
185
186			DSO *
187			DSO_load(DSO dso, const char filename, DSO_METHOD *meth, int flags)
188			{
189			DSO *ret;
190			int allocated = 0;
191
192			if (dso == NULL) {
193			ret = DSO_new_method(meth);
194			if (ret == NULL) {
195			DSOerr(DSO_F_DSO_LOAD, ERR_R_MALLOC_FAILURE);
196			goto err;
197			}
198			allocated = 1;
199			/* Pass the provided flags to the new DSO object */
200			if (DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0) {
201			DSOerr(DSO_F_DSO_LOAD, DSO_R_CTRL_FAILED);
202			goto err;
203			}
204			} else
205			ret = dso;
206			/* Don't load if we're currently already loaded */
207			if (ret->filename != NULL) {
208			DSOerr(DSO_F_DSO_LOAD, DSO_R_DSO_ALREADY_LOADED);
209			goto err;
210			}
211			/* filename can only be NULL if we were passed a dso that already has
212			* one set. */
213			if (filename != NULL)
214			if (!DSO_set_filename(ret, filename)) {
215			DSOerr(DSO_F_DSO_LOAD, DSO_R_SET_FILENAME_FAILED);
216			goto err;
217			}
218			filename = ret->filename;
219			if (filename == NULL) {
220			DSOerr(DSO_F_DSO_LOAD, DSO_R_NO_FILENAME);
221			goto err;
222			}
223			if (ret->meth->dso_load == NULL) {
224			DSOerr(DSO_F_DSO_LOAD, DSO_R_UNSUPPORTED);
225			goto err;
226			}
227			if (!ret->meth->dso_load(ret)) {
228			DSOerr(DSO_F_DSO_LOAD, DSO_R_LOAD_FAILED);
229			goto err;
230			}
231			/* Load succeeded */
232			return (ret);
233
234			err:
235			if (allocated)
236			DSO_free(ret);
237			return (NULL);
238			}
239
240			void *
241			DSO_bind_var(DSO dso, const char symname)
242			{
243			void *ret = NULL;
244
245			if ((dso == NULL) \|\| (symname == NULL)) {
246			DSOerr(DSO_F_DSO_BIND_VAR, ERR_R_PASSED_NULL_PARAMETER);
247			return (NULL);
248			}
249			if (dso->meth->dso_bind_var == NULL) {
250			DSOerr(DSO_F_DSO_BIND_VAR, DSO_R_UNSUPPORTED);
251			return (NULL);
252			}
253			if ((ret = dso->meth->dso_bind_var(dso, symname)) == NULL) {
254			DSOerr(DSO_F_DSO_BIND_VAR, DSO_R_SYM_FAILURE);
255			return (NULL);
256			}
257			/* Success */
258			return (ret);
259			}
260
261			DSO_FUNC_TYPE
262			DSO_bind_func(DSO dso, const char symname)
263			{
264			DSO_FUNC_TYPE ret = NULL;
265
266			if ((dso == NULL) \|\| (symname == NULL)) {
267			DSOerr(DSO_F_DSO_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
268			return (NULL);
269			}
270			if (dso->meth->dso_bind_func == NULL) {
271			DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_UNSUPPORTED);
272			return (NULL);
273			}
274			if ((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) {
275			DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_SYM_FAILURE);
276			return (NULL);
277			}
278			/* Success */
279			return (ret);
280			}
281
282			/* I don't really like these *_ctrl functions very much to be perfectly
283			* honest. For one thing, I think I have to return a negative value for
284			* any error because possible DSO_ctrl() commands may return values
285			* such as "size"s that can legitimately be zero (making the standard
286			* "if(DSO_cmd(...))" form that works almost everywhere else fail at
287			* odd times. I'd prefer "output" values to be passed by reference and
288			* the return value as success/failure like usual ... but we conform
289			* when we must... :-) */
290			long
291			DSO_ctrl(DSO dso, int cmd, long larg, void parg)
292			{
293			if (dso == NULL) {
294			DSOerr(DSO_F_DSO_CTRL, ERR_R_PASSED_NULL_PARAMETER);
295			return (-1);
296			}
297			/* We should intercept certain generic commands and only pass control
298			* to the method-specific ctrl() function if it's something we don't
299			* handle. */
300			switch (cmd) {
301			case DSO_CTRL_GET_FLAGS:
302			return dso->flags;
303			case DSO_CTRL_SET_FLAGS:
304			dso->flags = (int)larg;
305			return (0);
306			case DSO_CTRL_OR_FLAGS:
307			dso->flags \|= (int)larg;
308			return (0);
309			default:
310			break;
311			}
312			if ((dso->meth == NULL) \|\| (dso->meth->dso_ctrl == NULL)) {
313			DSOerr(DSO_F_DSO_CTRL, DSO_R_UNSUPPORTED);
314			return (-1);
315			}
316			return (dso->meth->dso_ctrl(dso, cmd, larg, parg));
317			}
318
319			int
320			DSO_set_name_converter(DSO *dso, DSO_NAME_CONVERTER_FUNC cb,
321			DSO_NAME_CONVERTER_FUNC *oldcb)
322			{
323			if (dso == NULL) {
324			DSOerr(DSO_F_DSO_SET_NAME_CONVERTER,
325			ERR_R_PASSED_NULL_PARAMETER);
326			return (0);
327			}
328			if (oldcb)
329			*oldcb = dso->name_converter;
330			dso->name_converter = cb;
331			return (1);
332			}
333
334			const char *
335			DSO_get_filename(DSO *dso)
336			{
337			if (dso == NULL) {
338			DSOerr(DSO_F_DSO_GET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
339			return (NULL);
340			}
341			return (dso->filename);
342			}
343
344			int
345			DSO_set_filename(DSO dso, const char filename)
346			{
347			char *copied;
348
349			if ((dso == NULL) \|\| (filename == NULL)) {
350			DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
351			return (0);
352			}
353			if (dso->loaded_filename) {
354			DSOerr(DSO_F_DSO_SET_FILENAME, DSO_R_DSO_ALREADY_LOADED);
355			return (0);
356			}
357			/* We'll duplicate filename */
358			copied = strdup(filename);
359			if (copied == NULL) {
360			DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_MALLOC_FAILURE);
361			return (0);
362			}
363			free(dso->filename);
364			dso->filename = copied;
365			return (1);
366			}
367
368			char *
369			DSO_merge(DSO dso, const char filespec1, const char *filespec2)
370			{
371			char *result = NULL;
372
373			if (dso == NULL \|\| filespec1 == NULL) {
374			DSOerr(DSO_F_DSO_MERGE, ERR_R_PASSED_NULL_PARAMETER);
375			return (NULL);
376			}
377			if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
378			if (dso->merger != NULL)
379			result = dso->merger(dso, filespec1, filespec2);
380			else if (dso->meth->dso_merger != NULL)
381			result = dso->meth->dso_merger(dso,
382			filespec1, filespec2);
383			}
384			return (result);
385			}
386
387			char *
388			DSO_convert_filename(DSO dso, const char filename)
389			{
390			char *result = NULL;
391
392			if (dso == NULL) {
393			DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
394			return (NULL);
395			}
396			if (filename == NULL)
397			filename = dso->filename;
398			if (filename == NULL) {
399			DSOerr(DSO_F_DSO_CONVERT_FILENAME, DSO_R_NO_FILENAME);
400			return (NULL);
401			}
402			if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
403			if (dso->name_converter != NULL)
404			result = dso->name_converter(dso, filename);
405			else if (dso->meth->dso_name_converter != NULL)
406			result = dso->meth->dso_name_converter(dso, filename);
407			}
408			if (result == NULL) {
409			result = strdup(filename);
410			if (result == NULL) {
411			DSOerr(DSO_F_DSO_CONVERT_FILENAME,
412			ERR_R_MALLOC_FAILURE);
413			return (NULL);
414			}
415			}
416			return (result);
417			}
418
419			const char *
420			DSO_get_loaded_filename(DSO *dso)
421			{
422			if (dso == NULL) {
423			DSOerr(DSO_F_DSO_GET_LOADED_FILENAME,
424			ERR_R_PASSED_NULL_PARAMETER);
425			return (NULL);
426			}
427			return (dso->loaded_filename);
428			}
429
430			int
431			DSO_pathbyaddr(void addr, char path, int sz)
432			{
433			DSO_METHOD *meth = default_DSO_meth;
434			if (meth == NULL)
435			meth = DSO_METHOD_openssl();
436			if (meth->pathbyaddr == NULL) {
437			DSOerr(DSO_F_DSO_PATHBYADDR, DSO_R_UNSUPPORTED);
438			return -1;
439			}
440			return (*meth->pathbyaddr)(addr, path, sz);
441			}
442
443			void *
444			DSO_global_lookup(const char *name)
445			{
446			DSO_METHOD *meth = default_DSO_meth;
447			if (meth == NULL)
448			meth = DSO_METHOD_openssl();
449			if (meth->globallookup == NULL) {
450			DSOerr(DSO_F_DSO_GLOBAL_LOOKUP, DSO_R_UNSUPPORTED);
451			return NULL;
452			}
453			return (*meth->globallookup)(name);
454			}