sl@0: /* conf_mod.c */
sl@0: /* Written by Stephen Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project 2001.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: #include <stdio.h>
sl@0: #include <ctype.h>
sl@0: #include <openssl/crypto.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/conf.h>
sl@0: #include <openssl/dso.h>
sl@0: #include <openssl/x509.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #define DSO_mod_init_name "OPENSSL_init"
sl@0: #define DSO_mod_finish_name "OPENSSL_finish"
sl@0: 
sl@0: 
sl@0: /* This structure contains a data about supported modules.
sl@0:  * entries in this table correspond to either dynamic or
sl@0:  * static modules.
sl@0:  */
sl@0: 
sl@0: struct conf_module_st
sl@0: 	{
sl@0: 	/* DSO of this module or NULL if static */
sl@0: 	DSO *dso;
sl@0: 	/* Name of the module */
sl@0: 	char *name;
sl@0: 	/* Init function */
sl@0: 	conf_init_func *init; 
sl@0: 	/* Finish function */
sl@0: 	conf_finish_func *finish;
sl@0: 	/* Number of successfully initialized modules */
sl@0: 	int links;
sl@0: 	void *usr_data;
sl@0: 	};
sl@0: 
sl@0: 
sl@0: /* This structure contains information about modules that have been
sl@0:  * successfully initialized. There may be more than one entry for a
sl@0:  * given module.
sl@0:  */
sl@0: 
sl@0: struct conf_imodule_st
sl@0: 	{
sl@0: 	CONF_MODULE *pmod;
sl@0: 	char *name;
sl@0: 	char *value;
sl@0: 	unsigned long flags;
sl@0: 	void *usr_data;
sl@0: 	};
sl@0: #ifndef EMULATOR
sl@0: static STACK_OF(CONF_MODULE) *supported_modules = NULL;
sl@0: static STACK_OF(CONF_IMODULE) *initialized_modules = NULL;
sl@0: #else
sl@0:   GET_STATIC_VAR_FROM_TLS(supported_modules,conf_mod,STACK_OF(CONF_MODULE) *)
sl@0:   #define supported_modules (*GET_WSD_VAR_NAME(supported_modules,conf_mod, s)())
sl@0:   
sl@0:   GET_STATIC_VAR_FROM_TLS(initialized_modules,conf_mod,STACK_OF(CONF_MODULE) *)
sl@0:   #define initialized_modules (*GET_WSD_VAR_NAME(initialized_modules,conf_mod, s)())
sl@0: #endif
sl@0: 
sl@0: static void module_free(CONF_MODULE *md);
sl@0: static void module_finish(CONF_IMODULE *imod);
sl@0: static int module_run(const CONF *cnf, char *name, char *value,
sl@0: 					  unsigned long flags);
sl@0: static CONF_MODULE *module_add(DSO *dso, const char *name,
sl@0: 			conf_init_func *ifunc, conf_finish_func *ffunc);
sl@0: static CONF_MODULE *module_find(char *name);
sl@0: static int module_init(CONF_MODULE *pmod, char *name, char *value,
sl@0: 					   const CONF *cnf);
sl@0: static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value,
sl@0: 									unsigned long flags);
sl@0: 
sl@0: /* Main function: load modules from a CONF structure */
sl@0: 
sl@0: EXPORT_C int CONF_modules_load(const CONF *cnf, const char *appname,
sl@0: 		      unsigned long flags)
sl@0: 	{
sl@0: 	STACK_OF(CONF_VALUE) *values;
sl@0: 	CONF_VALUE *vl;
sl@0: 	char *vsection = NULL;
sl@0: 
sl@0: 	int ret, i;
sl@0: 
sl@0: 	if (!cnf)
sl@0: 		return 1;
sl@0: 
sl@0: 	if (appname)
sl@0: 
sl@0: 	vsection = NCONF_get_string(cnf, NULL, appname); 
sl@0: 	if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION)))
sl@0: 		vsection = NCONF_get_string(cnf, NULL, "openssl_conf");
sl@0: 
sl@0: 	if (!vsection)
sl@0: 		{
sl@0: 		ERR_clear_error();
sl@0: 		return 1;
sl@0: 		}
sl@0: 
sl@0: 	values = NCONF_get_section(cnf, vsection);
sl@0: 
sl@0: 	if (!values)
sl@0: 		return 0;
sl@0: 
sl@0: 	for (i = 0; i < sk_CONF_VALUE_num(values); i++)
sl@0: 		{
sl@0: 		vl = sk_CONF_VALUE_value(values, i);
sl@0: 		ret = module_run(cnf, vl->name, vl->value, flags);
sl@0: 		if (ret <= 0)
sl@0: 			if(!(flags & CONF_MFLAGS_IGNORE_ERRORS))
sl@0: 				return ret;
sl@0: 		}
sl@0: 
sl@0: 	return 1;
sl@0: 
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int CONF_modules_load_file(const char *filename, const char *appname,
sl@0: 			   unsigned long flags)
sl@0: 	{
sl@0: 	char *file = NULL;
sl@0: 	CONF *conf = NULL;
sl@0: 	int ret = 0;
sl@0: 	conf = NCONF_new(NULL);
sl@0: 	if (!conf)
sl@0: 		goto err;
sl@0: 
sl@0: 	if (filename == NULL)
sl@0: 		{
sl@0: 		file = CONF_get1_default_config_file();
sl@0: 		if (!file)
sl@0: 			goto err;
sl@0: 		}
sl@0: 	else
sl@0: 		file = (char *)filename;
sl@0: 
sl@0: 	if (NCONF_load(conf, file, NULL) <= 0)
sl@0: 		{
sl@0: 		if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) &&
sl@0: 		  (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE))
sl@0: 			{
sl@0: 			ERR_clear_error();
sl@0: 			ret = 1;
sl@0: 			}
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	ret = CONF_modules_load(conf, appname, flags);
sl@0: 
sl@0: 	err:
sl@0: 	if (filename == NULL)
sl@0: 		OPENSSL_free(file);
sl@0: 	NCONF_free(conf);
sl@0: 
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: static int module_run(const CONF *cnf, char *name, char *value,
sl@0: 		      unsigned long flags)
sl@0: 	{
sl@0: 	CONF_MODULE *md;
sl@0: 	int ret;
sl@0: 
sl@0: 	md = module_find(name);
sl@0: 
sl@0: 	/* Module not found: try to load DSO */
sl@0: 	if (!md && !(flags & CONF_MFLAGS_NO_DSO))
sl@0: 		md = module_load_dso(cnf, name, value, flags);
sl@0: 
sl@0: 	if (!md)
sl@0: 		{
sl@0: 		if (!(flags & CONF_MFLAGS_SILENT))
sl@0: 			{
sl@0: 			CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME);
sl@0: 			ERR_add_error_data(2, "module=", name);
sl@0: 			}
sl@0: 		return -1;
sl@0: 		}
sl@0: 
sl@0: 	ret = module_init(md, name, value, cnf);
sl@0: 
sl@0: 	if (ret <= 0)
sl@0: 		{
sl@0: 		if (!(flags & CONF_MFLAGS_SILENT))
sl@0: 			{
sl@0: 			char rcode[DECIMAL_SIZE(ret)+1];
sl@0: 			CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR);
sl@0: 			BIO_snprintf(rcode, sizeof rcode, "%-8d", ret);
sl@0: 			ERR_add_error_data(6, "module=", name, ", value=", value, ", retcode=", rcode);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: /* Load a module from a DSO */
sl@0: static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value,
sl@0: 				    unsigned long flags)
sl@0: 	{
sl@0: 	DSO *dso = NULL;
sl@0: 	conf_init_func *ifunc;
sl@0: 	conf_finish_func *ffunc;
sl@0: 	char *path = NULL;
sl@0: 	int errcode = 0;
sl@0: 	CONF_MODULE *md;
sl@0: 	/* Look for alternative path in module section */
sl@0: 	path = NCONF_get_string(cnf, value, "path");
sl@0: 	if (!path)
sl@0: 		{
sl@0: 		ERR_clear_error();
sl@0: 		path = name;
sl@0: 		}
sl@0: 	dso = DSO_load(NULL, path, NULL, 0);
sl@0: 	if (!dso)
sl@0: 		{
sl@0: 		errcode = CONF_R_ERROR_LOADING_DSO;
sl@0: 		goto err;
sl@0: 		}
sl@0:         ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name);
sl@0: 	if (!ifunc)
sl@0: 		{
sl@0: 		errcode = CONF_R_MISSING_INIT_FUNCTION;
sl@0: 		goto err;
sl@0: 		}
sl@0:         ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name);
sl@0: 	/* All OK, add module */
sl@0: 	md = module_add(dso, name, ifunc, ffunc);
sl@0: 
sl@0: 	if (!md)
sl@0: 		goto err;
sl@0: 
sl@0: 	return md;
sl@0: 
sl@0: 	err:
sl@0: 	if (dso)
sl@0: 		DSO_free(dso);
sl@0: 	CONFerr(CONF_F_MODULE_LOAD_DSO, errcode);
sl@0: 	ERR_add_error_data(4, "module=", name, ", path=", path);
sl@0: 	return NULL;
sl@0: 	}
sl@0: 
sl@0: /* add module to list */
sl@0: static CONF_MODULE *module_add(DSO *dso, const char *name,
sl@0: 			       conf_init_func *ifunc, conf_finish_func *ffunc)
sl@0: 	{
sl@0: 	CONF_MODULE *tmod = NULL;
sl@0: 	if (supported_modules == NULL)
sl@0: 		supported_modules = sk_CONF_MODULE_new_null();
sl@0: 	if (supported_modules == NULL)
sl@0: 		return NULL;
sl@0: 	tmod = OPENSSL_malloc(sizeof(CONF_MODULE));
sl@0: 	if (tmod == NULL)
sl@0: 		return NULL;
sl@0: 
sl@0: 	tmod->dso = dso;
sl@0: 	tmod->name = BUF_strdup(name);
sl@0: 	tmod->init = ifunc;
sl@0: 	tmod->finish = ffunc;
sl@0: 	tmod->links = 0;
sl@0: 
sl@0: 	if (!sk_CONF_MODULE_push(supported_modules, tmod))
sl@0: 		{
sl@0: 		OPENSSL_free(tmod);
sl@0: 		return NULL;
sl@0: 		}
sl@0: 
sl@0: 	return tmod;
sl@0: 	}
sl@0: 
sl@0: /* Find a module from the list. We allow module names of the
sl@0:  * form modname.XXXX to just search for modname to allow the
sl@0:  * same module to be initialized more than once.
sl@0:  */
sl@0: 
sl@0: static CONF_MODULE *module_find(char *name)
sl@0: 	{
sl@0: 	CONF_MODULE *tmod;
sl@0: 	int i, nchar;
sl@0: 	char *p;
sl@0: 	p = strrchr(name, '.');
sl@0: 
sl@0: 	if (p)
sl@0: 		nchar = p - name;
sl@0: 	else 
sl@0: 		nchar = strlen(name);
sl@0: 
sl@0: 	for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++)
sl@0: 		{
sl@0: 		tmod = sk_CONF_MODULE_value(supported_modules, i);
sl@0: 		if (!strncmp(tmod->name, name, nchar))
sl@0: 			return tmod;
sl@0: 		}
sl@0: 
sl@0: 	return NULL;
sl@0: 
sl@0: 	}
sl@0: 
sl@0: /* initialize a module */
sl@0: static int module_init(CONF_MODULE *pmod, char *name, char *value,
sl@0: 		       const CONF *cnf)
sl@0: 	{
sl@0: 	int ret = 1;
sl@0: 	int init_called = 0;
sl@0: 	CONF_IMODULE *imod = NULL;
sl@0: 
sl@0: 	/* Otherwise add initialized module to list */
sl@0: 	imod = OPENSSL_malloc(sizeof(CONF_IMODULE));
sl@0: 	if (!imod)
sl@0: 		goto err;
sl@0: 
sl@0: 	imod->pmod = pmod;
sl@0: 	imod->name = BUF_strdup(name);
sl@0: 	imod->value = BUF_strdup(value);
sl@0: 	imod->usr_data = NULL;
sl@0: 
sl@0: 	if (!imod->name || !imod->value)
sl@0: 		goto memerr;
sl@0: 
sl@0: 	/* Try to initialize module */
sl@0: 	if(pmod->init)
sl@0: 		{
sl@0: 		ret = pmod->init(imod, cnf);
sl@0: 		init_called = 1;
sl@0: 		/* Error occurred, exit */
sl@0: 		if (ret <= 0)
sl@0: 			goto err;
sl@0: 		}
sl@0: 
sl@0: 	if (initialized_modules == NULL)
sl@0: 		{
sl@0: 		initialized_modules = sk_CONF_IMODULE_new_null();
sl@0: 		if (!initialized_modules)
sl@0: 			{
sl@0: 			CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (!sk_CONF_IMODULE_push(initialized_modules, imod))
sl@0: 		{
sl@0: 		CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	pmod->links++;
sl@0: 
sl@0: 	return ret;
sl@0: 
sl@0: 	err:
sl@0: 
sl@0: 	/* We've started the module so we'd better finish it */
sl@0: 	if (pmod->finish && init_called)
sl@0: 		pmod->finish(imod);
sl@0: 
sl@0: 	memerr:
sl@0: 	if (imod)
sl@0: 		{
sl@0: 		if (imod->name)
sl@0: 			OPENSSL_free(imod->name);
sl@0: 		if (imod->value)
sl@0: 			OPENSSL_free(imod->value);
sl@0: 		OPENSSL_free(imod);
sl@0: 		}
sl@0: 
sl@0: 	return -1;
sl@0: 
sl@0: 	}
sl@0: 
sl@0: /* Unload any dynamic modules that have a link count of zero:
sl@0:  * i.e. have no active initialized modules. If 'all' is set
sl@0:  * then all modules are unloaded including static ones.
sl@0:  */
sl@0: 
sl@0: EXPORT_C void CONF_modules_unload(int all)
sl@0: 	{
sl@0: 	int i;
sl@0: 	CONF_MODULE *md;
sl@0: 	CONF_modules_finish();
sl@0: 	/* unload modules in reverse order */
sl@0: 	for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--)
sl@0: 		{
sl@0: 		md = sk_CONF_MODULE_value(supported_modules, i);
sl@0: 		/* If static or in use and 'all' not set ignore it */
sl@0: 		if (((md->links > 0) || !md->dso) && !all)
sl@0: 			continue;
sl@0: 		/* Since we're working in reverse this is OK */
sl@0: 		(void)sk_CONF_MODULE_delete(supported_modules, i);
sl@0: 		module_free(md);
sl@0: 		}
sl@0: 	if (sk_CONF_MODULE_num(supported_modules) == 0)
sl@0: 		{
sl@0: 		sk_CONF_MODULE_free(supported_modules);
sl@0: 		supported_modules = NULL;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /* unload a single module */
sl@0: static void module_free(CONF_MODULE *md)
sl@0: 	{
sl@0: 	if (md->dso)
sl@0: 		DSO_free(md->dso);
sl@0: 	OPENSSL_free(md->name);
sl@0: 	OPENSSL_free(md);
sl@0: 	}
sl@0: 
sl@0: /* finish and free up all modules instances */
sl@0: 
sl@0: EXPORT_C void CONF_modules_finish(void)
sl@0: 	{
sl@0: 	CONF_IMODULE *imod;
sl@0: 	while (sk_CONF_IMODULE_num(initialized_modules) > 0)
sl@0: 		{
sl@0: 		imod = sk_CONF_IMODULE_pop(initialized_modules);
sl@0: 		module_finish(imod);
sl@0: 		}
sl@0: 	sk_CONF_IMODULE_free(initialized_modules);
sl@0: 	initialized_modules = NULL;
sl@0: 	}
sl@0: 
sl@0: /* finish a module instance */
sl@0: 
sl@0: static void module_finish(CONF_IMODULE *imod)
sl@0: 	{
sl@0: 	if (imod->pmod->finish)
sl@0: 		imod->pmod->finish(imod);
sl@0: 	imod->pmod->links--;
sl@0: 	OPENSSL_free(imod->name);
sl@0: 	OPENSSL_free(imod->value);
sl@0: 	OPENSSL_free(imod);
sl@0: 	}
sl@0: 
sl@0: /* Add a static module to OpenSSL */
sl@0: 
sl@0: EXPORT_C int CONF_module_add(const char *name, conf_init_func *ifunc, 
sl@0: 		    conf_finish_func *ffunc)
sl@0: 	{
sl@0: 	if (module_add(NULL, name, ifunc, ffunc))
sl@0: 		return 1;
sl@0: 	else
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CONF_modules_free(void)
sl@0: 	{
sl@0: 	CONF_modules_finish();
sl@0: 	CONF_modules_unload(1);
sl@0: 	}
sl@0: 
sl@0: /* Utility functions */
sl@0: 
sl@0: EXPORT_C const char *CONF_imodule_get_name(const CONF_IMODULE *md)
sl@0: 	{
sl@0: 	return md->name;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C const char *CONF_imodule_get_value(const CONF_IMODULE *md)
sl@0: 	{
sl@0: 	return md->value;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void *CONF_imodule_get_usr_data(const CONF_IMODULE *md)
sl@0: 	{
sl@0: 	return md->usr_data;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data)
sl@0: 	{
sl@0: 	md->usr_data = usr_data;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md)
sl@0: 	{
sl@0: 	return md->pmod;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md)
sl@0: 	{
sl@0: 	return md->flags;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags)
sl@0: 	{
sl@0: 	md->flags = flags;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void *CONF_module_get_usr_data(CONF_MODULE *pmod)
sl@0: 	{
sl@0: 	return pmod->usr_data;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data)
sl@0: 	{
sl@0: 	pmod->usr_data = usr_data;
sl@0: 	}
sl@0: 
sl@0: /* Return default config file name */
sl@0: 
sl@0: EXPORT_C char *CONF_get1_default_config_file(void)
sl@0: 	{
sl@0: 	char *file;
sl@0: 	int len;
sl@0: 
sl@0: 	file = getenv("OPENSSL_CONF");
sl@0: 	if (file) 
sl@0: 		return BUF_strdup(file);
sl@0: 
sl@0: 	len = strlen(X509_get_default_cert_area());
sl@0: #ifndef OPENSSL_SYS_VMS
sl@0: 	len++;
sl@0: #endif
sl@0: 	len += strlen(OPENSSL_CONF);
sl@0: 
sl@0: 	file = OPENSSL_malloc(len + 1);
sl@0: 
sl@0: 	if (!file)
sl@0: 		return NULL;
sl@0: 	BUF_strlcpy(file,X509_get_default_cert_area(),len + 1);
sl@0: #ifndef OPENSSL_SYS_VMS
sl@0: 	BUF_strlcat(file,"/",len + 1);
sl@0: #endif
sl@0: 	BUF_strlcat(file,OPENSSL_CONF,len + 1);
sl@0: 
sl@0: 	return file;
sl@0: 	}
sl@0: 
sl@0: /* This function takes a list separated by 'sep' and calls the
sl@0:  * callback function giving the start and length of each member
sl@0:  * optionally stripping leading and trailing whitespace. This can
sl@0:  * be used to parse comma separated lists for example.
sl@0:  */
sl@0: 
sl@0: EXPORT_C int CONF_parse_list(const char *list_, int sep, int nospc,
sl@0: 	int (*list_cb)(const char *elem, int len, void *usr), void *arg)
sl@0: 	{
sl@0: 	int ret;
sl@0: 	const char *lstart, *tmpend, *p;
sl@0: 	lstart = list_;
sl@0: 
sl@0: 	for(;;)
sl@0: 		{
sl@0: 		if (nospc)
sl@0: 			{
sl@0: 			while(*lstart && isspace((unsigned char)*lstart))
sl@0: 				lstart++;
sl@0: 			}
sl@0: 		p = strchr(lstart, sep);
sl@0: 		if (p == lstart || !*lstart)
sl@0: 			ret = list_cb(NULL, 0, arg);
sl@0: 		else
sl@0: 			{
sl@0: 			if (p)
sl@0: 				tmpend = p - 1;
sl@0: 			else 
sl@0: 				tmpend = lstart + strlen(lstart) - 1;
sl@0: 			if (nospc)
sl@0: 				{
sl@0: 				while(isspace((unsigned char)*tmpend))
sl@0: 					tmpend--;
sl@0: 				}
sl@0: 			ret = list_cb(lstart, tmpend - lstart + 1, arg);
sl@0: 			}
sl@0: 		if (ret <= 0)
sl@0: 			return ret;
sl@0: 		if (p == NULL)
sl@0: 			return 1;
sl@0: 		lstart = p + 1;
sl@0: 		}
sl@0: 	}
sl@0: