Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/dso/dso_lib.c	Lines:	0	179	0.0 %
Date:	2017-11-13	Branches:	0	114	0.0 %


/* $OpenBSD: dso_lib.c,v 1.19 2017/01/29 17:49:23 beck 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) {
		DSOerror(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 */
		DSOerror(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) {
		DSOerror(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)) {
		DSOerror(DSO_R_UNLOAD_FAILED);
		return (0);
	}

	if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
		DSOerror(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) {
		DSOerror(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) {
			DSOerror(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) {
			DSOerror(DSO_R_CTRL_FAILED);
			goto err;
		}
	} else
		ret = dso;
	/* Don't load if we're currently already loaded */
	if (ret->filename != NULL) {
		DSOerror(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)) {
		DSOerror(DSO_R_SET_FILENAME_FAILED);
		goto err;
	}
	filename = ret->filename;
	if (filename == NULL) {
		DSOerror(DSO_R_NO_FILENAME);
		goto err;
	}
	if (ret->meth->dso_load == NULL) {
		DSOerror(DSO_R_UNSUPPORTED);
		goto err;
	}
	if (!ret->meth->dso_load(ret)) {
		DSOerror(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)) {
		DSOerror(ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if (dso->meth->dso_bind_var == NULL) {
		DSOerror(DSO_R_UNSUPPORTED);
		return (NULL);
	}
	if ((ret = dso->meth->dso_bind_var(dso, symname)) == NULL) {
		DSOerror(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)) {
		DSOerror(ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if (dso->meth->dso_bind_func == NULL) {
		DSOerror(DSO_R_UNSUPPORTED);
		return (NULL);
	}
	if ((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) {
		DSOerror(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) {
		DSOerror(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)) {
		DSOerror(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) {
		DSOerror(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) {
		DSOerror(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)) {
		DSOerror(ERR_R_PASSED_NULL_PARAMETER);
		return (0);
	}
	if (dso->loaded_filename) {
		DSOerror(DSO_R_DSO_ALREADY_LOADED);
		return (0);
	}
	/* We'll duplicate filename */
	copied = strdup(filename);
	if (copied == NULL) {
		DSOerror(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) {
		DSOerror(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) {
		DSOerror(ERR_R_PASSED_NULL_PARAMETER);
		return (NULL);
	}
	if (filename == NULL)
		filename = dso->filename;
	if (filename == NULL) {
		DSOerror(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) {
			DSOerror(ERR_R_MALLOC_FAILURE);
			return (NULL);
		}
	}
	return (result);
}

const char *
DSO_get_loaded_filename(DSO *dso)
{
	if (dso == NULL) {
		DSOerror(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) {
		DSOerror(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) {
		DSOerror(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 1.19 2017/01/29 17:49:23 beck 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			DSOerror(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			DSOerror(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			DSOerror(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			DSOerror(DSO_R_UNLOAD_FAILED);
152			return (0);
153			}
154
155			if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
156			DSOerror(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			DSOerror(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			DSOerror(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			DSOerror(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			DSOerror(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			DSOerror(DSO_R_SET_FILENAME_FAILED);
216			goto err;
217			}
218			filename = ret->filename;
219			if (filename == NULL) {
220			DSOerror(DSO_R_NO_FILENAME);
221			goto err;
222			}
223			if (ret->meth->dso_load == NULL) {
224			DSOerror(DSO_R_UNSUPPORTED);
225			goto err;
226			}
227			if (!ret->meth->dso_load(ret)) {
228			DSOerror(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			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
247			return (NULL);
248			}
249			if (dso->meth->dso_bind_var == NULL) {
250			DSOerror(DSO_R_UNSUPPORTED);
251			return (NULL);
252			}
253			if ((ret = dso->meth->dso_bind_var(dso, symname)) == NULL) {
254			DSOerror(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			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
268			return (NULL);
269			}
270			if (dso->meth->dso_bind_func == NULL) {
271			DSOerror(DSO_R_UNSUPPORTED);
272			return (NULL);
273			}
274			if ((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) {
275			DSOerror(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			DSOerror(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			DSOerror(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			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
325			return (0);
326			}
327			if (oldcb)
328			*oldcb = dso->name_converter;
329			dso->name_converter = cb;
330			return (1);
331			}
332
333			const char *
334			DSO_get_filename(DSO *dso)
335			{
336			if (dso == NULL) {
337			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
338			return (NULL);
339			}
340			return (dso->filename);
341			}
342
343			int
344			DSO_set_filename(DSO dso, const char filename)
345			{
346			char *copied;
347
348			if ((dso == NULL) \|\| (filename == NULL)) {
349			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
350			return (0);
351			}
352			if (dso->loaded_filename) {
353			DSOerror(DSO_R_DSO_ALREADY_LOADED);
354			return (0);
355			}
356			/* We'll duplicate filename */
357			copied = strdup(filename);
358			if (copied == NULL) {
359			DSOerror(ERR_R_MALLOC_FAILURE);
360			return (0);
361			}
362			free(dso->filename);
363			dso->filename = copied;
364			return (1);
365			}
366
367			char *
368			DSO_merge(DSO dso, const char filespec1, const char *filespec2)
369			{
370			char *result = NULL;
371
372			if (dso == NULL \|\| filespec1 == NULL) {
373			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
374			return (NULL);
375			}
376			if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
377			if (dso->merger != NULL)
378			result = dso->merger(dso, filespec1, filespec2);
379			else if (dso->meth->dso_merger != NULL)
380			result = dso->meth->dso_merger(dso,
381			filespec1, filespec2);
382			}
383			return (result);
384			}
385
386			char *
387			DSO_convert_filename(DSO dso, const char filename)
388			{
389			char *result = NULL;
390
391			if (dso == NULL) {
392			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
393			return (NULL);
394			}
395			if (filename == NULL)
396			filename = dso->filename;
397			if (filename == NULL) {
398			DSOerror(DSO_R_NO_FILENAME);
399			return (NULL);
400			}
401			if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
402			if (dso->name_converter != NULL)
403			result = dso->name_converter(dso, filename);
404			else if (dso->meth->dso_name_converter != NULL)
405			result = dso->meth->dso_name_converter(dso, filename);
406			}
407			if (result == NULL) {
408			result = strdup(filename);
409			if (result == NULL) {
410			DSOerror(ERR_R_MALLOC_FAILURE);
411			return (NULL);
412			}
413			}
414			return (result);
415			}
416
417			const char *
418			DSO_get_loaded_filename(DSO *dso)
419			{
420			if (dso == NULL) {
421			DSOerror(ERR_R_PASSED_NULL_PARAMETER);
422			return (NULL);
423			}
424			return (dso->loaded_filename);
425			}
426
427			int
428			DSO_pathbyaddr(void addr, char path, int sz)
429			{
430			DSO_METHOD *meth = default_DSO_meth;
431			if (meth == NULL)
432			meth = DSO_METHOD_openssl();
433			if (meth->pathbyaddr == NULL) {
434			DSOerror(DSO_R_UNSUPPORTED);
435			return -1;
436			}
437			return (*meth->pathbyaddr)(addr, path, sz);
438			}
439
440			void *
441			DSO_global_lookup(const char *name)
442			{
443			DSO_METHOD *meth = default_DSO_meth;
444			if (meth == NULL)
445			meth = DSO_METHOD_openssl();
446			if (meth->globallookup == NULL) {
447			DSOerror(DSO_R_UNSUPPORTED);
448			return NULL;
449			}
450			return (*meth->globallookup)(name);
451			}