GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/engine/eng_cnf.c Lines: 2 76 2.6 %
Date: 2017-11-13 Branches: 0 70 0.0 %

Line Branch Exec Source
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/* $OpenBSD: eng_cnf.c,v 1.14 2017/01/29 17:49:23 beck Exp $ */
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/* Written by Stephen Henson (steve@openssl.org) for the OpenSSL
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 * project 2001.
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 */
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/* ====================================================================
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 * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    licensing@OpenSSL.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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#include <string.h>
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#include <openssl/err.h>
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#include "eng_int.h"
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#include <openssl/conf.h>
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/* #define ENGINE_CONF_DEBUG */
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/* ENGINE config module */
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static char *
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skip_dot(char *name)
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{
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	char *p;
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	p = strchr(name, '.');
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	if (p)
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		return p + 1;
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	return name;
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}
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static STACK_OF(ENGINE) *initialized_engines = NULL;
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static int
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int_engine_init(ENGINE *e)
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{
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	if (!ENGINE_init(e))
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		return 0;
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	if (!initialized_engines)
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		initialized_engines = sk_ENGINE_new_null();
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	if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e)) {
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		ENGINE_finish(e);
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		return 0;
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	}
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	return 1;
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}
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static int
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int_engine_configure(char *name, char *value, const CONF *cnf)
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{
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	int i;
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	int ret = 0;
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	long do_init = -1;
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	STACK_OF(CONF_VALUE) *ecmds;
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	CONF_VALUE *ecmd = NULL;
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	char *ctrlname, *ctrlvalue;
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	ENGINE *e = NULL;
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	int soft = 0;
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	name = skip_dot(name);
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#ifdef ENGINE_CONF_DEBUG
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	fprintf(stderr, "Configuring engine %s\n", name);
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#endif
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	/* Value is a section containing ENGINE commands */
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	ecmds = NCONF_get_section(cnf, value);
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	if (!ecmds) {
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		ENGINEerror(ENGINE_R_ENGINE_SECTION_ERROR);
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		return 0;
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	}
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	for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
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		ecmd = sk_CONF_VALUE_value(ecmds, i);
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		ctrlname = skip_dot(ecmd->name);
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		ctrlvalue = ecmd->value;
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#ifdef ENGINE_CONF_DEBUG
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		fprintf(stderr, "ENGINE conf: doing ctrl(%s,%s)\n",
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		    ctrlname, ctrlvalue);
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#endif
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		/* First handle some special pseudo ctrls */
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		/* Override engine name to use */
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		if (!strcmp(ctrlname, "engine_id"))
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			name = ctrlvalue;
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		else if (!strcmp(ctrlname, "soft_load"))
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			soft = 1;
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		/* Load a dynamic ENGINE */
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		else if (!strcmp(ctrlname, "dynamic_path")) {
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			e = ENGINE_by_id("dynamic");
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			if (!e)
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				goto err;
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			if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0))
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				goto err;
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			if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0))
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				goto err;
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			if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
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				goto err;
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		}
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		/* ... add other pseudos here ... */
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		else {
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			/* At this point we need an ENGINE structural reference
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			 * if we don't already have one.
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			 */
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			if (!e) {
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				e = ENGINE_by_id(name);
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				if (!e && soft) {
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					ERR_clear_error();
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					return 1;
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				}
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				if (!e)
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					goto err;
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			}
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			/* Allow "EMPTY" to mean no value: this allows a valid
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			 * "value" to be passed to ctrls of type NO_INPUT
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		 	 */
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			if (!strcmp(ctrlvalue, "EMPTY"))
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				ctrlvalue = NULL;
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			if (!strcmp(ctrlname, "init")) {
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				if (!NCONF_get_number_e(cnf, value, "init",
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				    &do_init))
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					goto err;
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				if (do_init == 1) {
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					if (!int_engine_init(e))
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						goto err;
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				} else if (do_init != 0) {
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					ENGINEerror(ENGINE_R_INVALID_INIT_VALUE);
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					goto err;
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				}
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			}
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			else if (!strcmp(ctrlname, "default_algorithms")) {
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				if (!ENGINE_set_default_string(e, ctrlvalue))
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					goto err;
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			} else if (!ENGINE_ctrl_cmd_string(e,
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				ctrlname, ctrlvalue, 0))
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				goto err;
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		}
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	}
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	if (e && (do_init == -1) && !int_engine_init(e)) {
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		ecmd = NULL;
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		goto err;
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	}
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	ret = 1;
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err:
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	if (ret != 1) {
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		ENGINEerror(ENGINE_R_ENGINE_CONFIGURATION_ERROR);
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		if (ecmd)
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			ERR_asprintf_error_data(
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			    "section=%s, name=%s, value=%s",
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			    ecmd->section, ecmd->name, ecmd->value);
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	}
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	if (e)
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		ENGINE_free(e);
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	return ret;
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}
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static int
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int_engine_module_init(CONF_IMODULE *md, const CONF *cnf)
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{
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	STACK_OF(CONF_VALUE) *elist;
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	CONF_VALUE *cval;
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	int i;
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#ifdef ENGINE_CONF_DEBUG
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	fprintf(stderr, "Called engine module: name %s, value %s\n",
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	    CONF_imodule_get_name(md), CONF_imodule_get_value(md));
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#endif
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	/* Value is a section containing ENGINEs to configure */
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	elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
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	if (!elist) {
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		ENGINEerror(ENGINE_R_ENGINES_SECTION_ERROR);
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		return 0;
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	}
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	for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
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		cval = sk_CONF_VALUE_value(elist, i);
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		if (!int_engine_configure(cval->name, cval->value, cnf))
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			return 0;
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	}
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	return 1;
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}
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static void
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int_engine_module_finish(CONF_IMODULE *md)
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{
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	ENGINE *e;
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	while ((e = sk_ENGINE_pop(initialized_engines)))
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		ENGINE_finish(e);
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	sk_ENGINE_free(initialized_engines);
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	initialized_engines = NULL;
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}
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void
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ENGINE_add_conf_module(void)
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{
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2792
	CONF_module_add("engines", int_engine_module_init,
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	    int_engine_module_finish);
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}