I've always wanted to make the CONF library more adaptable. Here's

the result.

I have retained the old behavior of the CONF_* functions, and have
added a more "object oriented" interface through NCONF_* functions
(New CONF, you see :-)), working the same way as, for example, the
BIO interface.  Really, the CONF_* are rewritten so they use the
NCONF_* functions internally.

In addition to that, I've split the old conf.c code into two files,
conf_def.c and conf_api.c.  conf_def.c contains the default config
object that reads a configuration file the standard OpenSSL way, as
well as configuration file with Win32 registry file syntax (I'm not
sure I got that one right).  conf_api.c provides an API to build other
configuration file readers around (can you see a configuraion file in
XML?  I can :-)).

Finally, I've changed the name conf_lcl.h to conf_def.h, since it's
made specifically for that "class" and none others.

1 files changed, 352 insertions, 0 deletions

diff --git a/crypto/conf/conf_lib.c b/crypto/conf/conf_lib.c
new file mode 100644
index 0000000000..7a933e56ba
--- /dev/null
+++ b/crypto/conf/conf_lib.c
@@ -0,0 +1,352 @@
+/* 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;
+
+/* 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 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 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;
+
+	if (default_CONF_method == NULL)
+		default_CONF_method = NCONF_default();
+
+	default_CONF_method->init(&ctmp);
+	ctmp.data = conf;
+	ret = NCONF_load_bio(&ctmp, bp, eline);
+	if (ret)
+		return ctmp.data;
+	return NULL;
+	}
+
+STACK_OF(CONF_VALUE) *CONF_get_section(LHASH *conf,char *section)
+	{
+	CONF ctmp;
+
+	if (default_CONF_method == NULL)
+		default_CONF_method = NCONF_default();
+
+	default_CONF_method->init(&ctmp);
+	ctmp.data = conf;
+	return NCONF_get_section(&ctmp, section);
+	}
+
+char *CONF_get_string(LHASH *conf,char *group,char *name)
+	{
+	CONF ctmp;
+
+	if (default_CONF_method == NULL)
+		default_CONF_method = NCONF_default();
+
+	default_CONF_method->init(&ctmp);
+	ctmp.data = conf;
+	return NCONF_get_string(&ctmp, group, name);
+	}
+
+long CONF_get_number(LHASH *conf,char *group,char *name)
+	{
+	CONF ctmp;
+
+	if (default_CONF_method == NULL)
+		default_CONF_method = NCONF_default();
+
+	default_CONF_method->init(&ctmp);
+	ctmp.data = conf;
+	return NCONF_get_number(&ctmp, group, name);
+	}
+
+void CONF_free(LHASH *conf)
+	{
+	CONF ctmp;
+
+	if (default_CONF_method == NULL)
+		default_CONF_method = NCONF_default();
+
+	default_CONF_method->init(&ctmp);
+	ctmp.data = conf;
+	NCONF_free_data(&ctmp);
+	}
+
+#ifndef 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;
+
+	if (default_CONF_method == NULL)
+		default_CONF_method = NCONF_default();
+
+	default_CONF_method->init(&ctmp);
+	ctmp.data = 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)
+		{
+		RSAerr(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)
+	{
+	int ret;
+	BIO *in=NULL;
+
+#ifdef 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 0;
+		}
+
+	ret = NCONF_load_bio(conf, in, eline);
+	BIO_free(in);
+
+	return ret;
+	}
+
+#ifndef 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_CONF_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(conf, bp, eline);
+	}
+
+STACK_OF(CONF_VALUE) *NCONF_get_section(CONF *conf,char *section)
+	{
+	if (conf == NULL)
+		{
+		CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_CONF);
+		return NULL;
+		}
+
+	return _CONF_get_section_values(conf, section);
+	}
+
+char *NCONF_get_string(CONF *conf,char *group,char *name)
+	{
+	if (conf == NULL)
+		{
+		CONFerr(CONF_F_NCONF_GET_STRING,CONF_R_NO_CONF);
+		return NULL;
+		}
+
+	return _CONF_get_string(conf, group, name);
+	}
+
+long NCONF_get_number(CONF *conf,char *group,char *name)
+	{
+	if (conf == NULL)
+		{
+		CONFerr(CONF_F_NCONF_GET_NUMBER,CONF_R_NO_CONF);
+		return 0;
+		}
+	
+	return _CONF_get_number(conf, group, name);
+	}
+
+#ifndef NO_FP_API
+int NCONF_dump_fp(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(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);
+	}
+