conf_lib.c
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上传日期:2020-08-09
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- /* conf_lib.c */
- /* Written by Richard Levitte (richard@levitte.org) 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 <openssl/crypto.h>
- #include <openssl/err.h>
- #include <openssl/conf.h>
- #include <openssl/conf_api.h>
- #include <openssl/lhash.h>
- const char *CONF_version="CONF" OPENSSL_VERSION_PTEXT;
- static CONF_METHOD *default_CONF_method=NULL;
- /* Init a 'CONF' structure from an old LHASH */
- void CONF_set_nconf(CONF *conf, LHASH *hash)
- {
- if (default_CONF_method == NULL)
- default_CONF_method = NCONF_default();
- default_CONF_method->init(conf);
- conf->data = hash;
- }
- /* The following section contains the "CONF classic" functions,
- rewritten in terms of the new CONF interface. */
- int CONF_set_default_method(CONF_METHOD *meth)
- {
- default_CONF_method = meth;
- return 1;
- }
- LHASH *CONF_load(LHASH *conf, const char *file, long *eline)
- {
- LHASH *ltmp;
- BIO *in=NULL;
- #ifdef OPENSSL_SYS_VMS
- in=BIO_new_file(file, "r");
- #else
- in=BIO_new_file(file, "rb");
- #endif
- if (in == NULL)
- {
- CONFerr(CONF_F_CONF_LOAD,ERR_R_SYS_LIB);
- return NULL;
- }
- ltmp = CONF_load_bio(conf, in, eline);
- BIO_free(in);
- return ltmp;
- }
- #ifndef OPENSSL_NO_FP_API
- LHASH *CONF_load_fp(LHASH *conf, FILE *fp,long *eline)
- {
- BIO *btmp;
- LHASH *ltmp;
- if(!(btmp = BIO_new_fp(fp, BIO_NOCLOSE))) {
- CONFerr(CONF_F_CONF_LOAD_FP,ERR_R_BUF_LIB);
- return NULL;
- }
- ltmp = CONF_load_bio(conf, btmp, eline);
- BIO_free(btmp);
- return ltmp;
- }
- #endif
- LHASH *CONF_load_bio(LHASH *conf, BIO *bp,long *eline)
- {
- CONF ctmp;
- int ret;
- CONF_set_nconf(&ctmp, conf);
- ret = NCONF_load_bio(&ctmp, bp, eline);
- if (ret)
- return ctmp.data;
- return NULL;
- }
- STACK_OF(CONF_VALUE) *CONF_get_section(LHASH *conf,const char *section)
- {
- if (conf == NULL)
- {
- return NULL;
- }
- else
- {
- CONF ctmp;
- CONF_set_nconf(&ctmp, conf);
- return NCONF_get_section(&ctmp, section);
- }
- }
- char *CONF_get_string(LHASH *conf,const char *group,const char *name)
- {
- if (conf == NULL)
- {
- return NCONF_get_string(NULL, group, name);
- }
- else
- {
- CONF ctmp;
- CONF_set_nconf(&ctmp, conf);
- return NCONF_get_string(&ctmp, group, name);
- }
- }
- long CONF_get_number(LHASH *conf,const char *group,const char *name)
- {
- int status;
- long result = 0;
- if (conf == NULL)
- {
- status = NCONF_get_number_e(NULL, group, name, &result);
- }
- else
- {
- CONF ctmp;
- CONF_set_nconf(&ctmp, conf);
- status = NCONF_get_number_e(&ctmp, group, name, &result);
- }
- if (status == 0)
- {
- /* This function does not believe in errors... */
- ERR_clear_error();
- }
- return result;
- }
- void CONF_free(LHASH *conf)
- {
- CONF ctmp;
- CONF_set_nconf(&ctmp, conf);
- NCONF_free_data(&ctmp);
- }
- #ifndef OPENSSL_NO_FP_API
- int CONF_dump_fp(LHASH *conf, FILE *out)
- {
- BIO *btmp;
- int ret;
- if(!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) {
- CONFerr(CONF_F_CONF_DUMP_FP,ERR_R_BUF_LIB);
- return 0;
- }
- ret = CONF_dump_bio(conf, btmp);
- BIO_free(btmp);
- return ret;
- }
- #endif
- int CONF_dump_bio(LHASH *conf, BIO *out)
- {
- CONF ctmp;
- CONF_set_nconf(&ctmp, conf);
- return NCONF_dump_bio(&ctmp, out);
- }
- /* The following section contains the "New CONF" functions. They are
- completely centralised around a new CONF structure that may contain
- basically anything, but at least a method pointer and a table of data.
- These functions are also written in terms of the bridge functions used
- by the "CONF classic" functions, for consistency. */
- CONF *NCONF_new(CONF_METHOD *meth)
- {
- CONF *ret;
- if (meth == NULL)
- meth = NCONF_default();
- ret = meth->create(meth);
- if (ret == NULL)
- {
- CONFerr(CONF_F_NCONF_NEW,ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- return ret;
- }
- void NCONF_free(CONF *conf)
- {
- if (conf == NULL)
- return;
- conf->meth->destroy(conf);
- }
- void NCONF_free_data(CONF *conf)
- {
- if (conf == NULL)
- return;
- conf->meth->destroy_data(conf);
- }
- int NCONF_load(CONF *conf, const char *file, long *eline)
- {
- if (conf == NULL)
- {
- CONFerr(CONF_F_NCONF_LOAD,CONF_R_NO_CONF);
- return 0;
- }
- return conf->meth->load(conf, file, eline);
- }
- #ifndef OPENSSL_NO_FP_API
- int NCONF_load_fp(CONF *conf, FILE *fp,long *eline)
- {
- BIO *btmp;
- int ret;
- if(!(btmp = BIO_new_fp(fp, BIO_NOCLOSE)))
- {
- CONFerr(CONF_F_NCONF_LOAD_FP,ERR_R_BUF_LIB);
- return 0;
- }
- ret = NCONF_load_bio(conf, btmp, eline);
- BIO_free(btmp);
- return ret;
- }
- #endif
- int NCONF_load_bio(CONF *conf, BIO *bp,long *eline)
- {
- if (conf == NULL)
- {
- CONFerr(CONF_F_NCONF_LOAD_BIO,CONF_R_NO_CONF);
- return 0;
- }
- return conf->meth->load_bio(conf, bp, eline);
- }
- STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf,const char *section)
- {
- if (conf == NULL)
- {
- CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_CONF);
- return NULL;
- }
- if (section == NULL)
- {
- CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_SECTION);
- return NULL;
- }
- return _CONF_get_section_values(conf, section);
- }
- char *NCONF_get_string(const CONF *conf,const char *group,const char *name)
- {
- char *s = _CONF_get_string(conf, group, name);
- /* Since we may get a value from an environment variable even
- if conf is NULL, let's check the value first */
- if (s) return s;
- if (conf == NULL)
- {
- CONFerr(CONF_F_NCONF_GET_STRING,
- CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE);
- return NULL;
- }
- CONFerr(CONF_F_NCONF_GET_STRING,
- CONF_R_NO_VALUE);
- ERR_add_error_data(4,"group=",group," name=",name);
- return NULL;
- }
- int NCONF_get_number_e(const CONF *conf,const char *group,const char *name,
- long *result)
- {
- char *str;
- if (result == NULL)
- {
- CONFerr(CONF_F_NCONF_GET_NUMBER_E,ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- str = NCONF_get_string(conf,group,name);
- if (str == NULL)
- return 0;
- for (*result = 0;conf->meth->is_number(conf, *str);)
- {
- *result = (*result)*10 + conf->meth->to_int(conf, *str);
- str++;
- }
- return 1;
- }
- #ifndef OPENSSL_NO_FP_API
- int NCONF_dump_fp(const CONF *conf, FILE *out)
- {
- BIO *btmp;
- int ret;
- if(!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) {
- CONFerr(CONF_F_NCONF_DUMP_FP,ERR_R_BUF_LIB);
- return 0;
- }
- ret = NCONF_dump_bio(conf, btmp);
- BIO_free(btmp);
- return ret;
- }
- #endif
- int NCONF_dump_bio(const CONF *conf, BIO *out)
- {
- if (conf == NULL)
- {
- CONFerr(CONF_F_NCONF_DUMP_BIO,CONF_R_NO_CONF);
- return 0;
- }
- return conf->meth->dump(conf, out);
- }
- /* This function should be avoided */
- #if 0
- long NCONF_get_number(CONF *conf,char *group,char *name)
- {
- int status;
- long ret=0;
- status = NCONF_get_number_e(conf, group, name, &ret);
- if (status == 0)
- {
- /* This function does not believe in errors... */
- ERR_get_error();
- }
- return ret;
- }
- #endif