242 lines
6.6 KiB
C
242 lines
6.6 KiB
C
/* eng_cnf.c */
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/* Written by Stephen Henson (shenson@bigfoot.com) 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 <stdio.h>
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#include <openssl/crypto.h>
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#include "cryptlib.h"
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#include <openssl/conf.h>
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#include <openssl/engine.h>
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/* #define ENGINE_CONF_DEBUG */
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/* ENGINE config module */
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static char *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 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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{
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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 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;
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char *ctrlname, *ctrlvalue;
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ENGINE *e = NULL;
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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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{
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ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, 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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{
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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", 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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/* Load a dynamic ENGINE */
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else if (!strcmp(ctrlname, "dynamic_path"))
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{
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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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{
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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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{
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e = ENGINE_by_id(name);
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if (!e)
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return 0;
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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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else if (!strcmp(ctrlname, "init"))
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{
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if (!NCONF_get_number_e(cnf, value, "init", &do_init))
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goto err;
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if (do_init == 1)
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{
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if (!int_engine_init(e))
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goto err;
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}
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else if (do_init != 0)
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{
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ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, 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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{
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if (!ENGINE_set_default_string(e, ctrlvalue))
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goto err;
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}
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else if (!ENGINE_ctrl_cmd_string(e,
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ctrlname, ctrlvalue, 0))
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return 0;
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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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goto err;
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ret = 1;
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err:
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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 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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{
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ENGINEerr(ENGINE_F_ENGINE_MODULE_INIT, 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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{
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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 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 ENGINE_add_conf_module(void)
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{
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CONF_module_add("engines",
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int_engine_module_init,
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int_engine_module_finish);
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}
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