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, 288 insertions, 0 deletions

diff --git a/crypto/conf/conf_api.c b/crypto/conf/conf_api.c
new file mode 100644
index 0000000000..975d5c7abe
--- /dev/null
+++ b/crypto/conf/conf_api.c
@@ -0,0 +1,288 @@
+/* conf_api.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * 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 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 acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* Part of the code in here was originally in conf.c, which is now removed */
+
+#include <openssl/conf.h>
+#include <openssl/conf_api.h>
+
+static void value_free_hash(CONF_VALUE *a, LHASH *conf);
+static void value_free_stack(CONF_VALUE *a,LHASH *conf);
+static unsigned long hash(CONF_VALUE *v);
+static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b);
+
+/* This was get_section */
+CONF_VALUE *_CONF_get_section(CONF *conf, char *section)
+	{
+	CONF_VALUE *v,vv;
+
+	if ((conf == NULL) || (section == NULL)) return(NULL);
+	vv.name=NULL;
+	vv.section=section;
+	v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
+	return(v);
+	}
+
+/* This was CONF_get_section */
+STACK_OF(CONF_VALUE) *_CONF_get_section_values(CONF *conf, char *section)
+	{
+	CONF_VALUE *v;
+
+	v=_CONF_get_section(conf,section);
+	if (v != NULL)
+		return((STACK_OF(CONF_VALUE) *)v->value);
+	else
+		return(NULL);
+	}
+
+int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
+	{
+	CONF_VALUE *v = NULL;
+	STACK_OF(CONF_VALUE) *ts;
+
+	ts = (STACK_OF(CONF_VALUE) *)section->value;
+
+	value->section=section->section;	
+	if (!sk_CONF_VALUE_push(ts,value))
+		{
+		return 0;
+		}
+
+	v = (CONF_VALUE *)lh_insert(conf->data, value);
+	if (v != NULL)
+		{
+		sk_CONF_VALUE_delete_ptr(ts,v);
+		Free(v->name);
+		Free(v->value);
+		Free(v);
+		}
+	return 1;
+	}
+
+char *_CONF_get_string(CONF *conf, char *section, char *name)
+	{
+	CONF_VALUE *v,vv;
+	char *p;
+
+	if (name == NULL) return(NULL);
+	if (conf != NULL)
+		{
+		if (section != NULL)
+			{
+			vv.name=name;
+			vv.section=section;
+			v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
+			if (v != NULL) return(v->value);
+			if (strcmp(section,"ENV") == 0)
+				{
+				p=Getenv(name);
+				if (p != NULL) return(p);
+				}
+			}
+		vv.section="default";
+		vv.name=name;
+		v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
+		if (v != NULL)
+			return(v->value);
+		else
+			return(NULL);
+		}
+	else
+		return(Getenv(name));
+	}
+
+long _CONF_get_number(CONF *conf, char *section, char *name)
+	{
+	char *str;
+	long ret=0;
+
+	str=_CONF_get_string(conf,section,name);
+	if (str == NULL) return(0);
+	for (;;)
+		{
+		if (conf->meth->is_number(conf, *str))
+			ret=ret*10+conf->meth->to_int(conf, *str);
+		else
+			return(ret);
+		str++;
+		}
+	}
+
+int _CONF_new_data(CONF *conf)
+	{
+	if (conf == NULL)
+		{
+		return 0;
+		}
+	if (conf->data == NULL)
+		if ((conf->data = lh_new(hash,cmp_conf)) == NULL)
+			{
+			return 0;
+			}
+	return 1;
+	}
+
+void _CONF_free_data(CONF *conf)
+	{
+	if (conf == NULL || conf->data == NULL) return;
+
+	conf->data->down_load=0; /* evil thing to make sure the 'Free()'
+				  * works as expected */
+	lh_doall_arg(conf->data,(void (*)())value_free_hash,conf->data);
+
+	/* We now have only 'section' entries in the hash table.
+	 * Due to problems with */
+
+	lh_doall_arg(conf->data,(void (*)())value_free_stack,conf->data);
+	lh_free(conf->data);
+	}
+
+static void value_free_hash(CONF_VALUE *a, LHASH *conf)
+	{
+	if (a->name != NULL)
+		{
+		a=(CONF_VALUE *)lh_delete(conf,a);
+		}
+	}
+
+static void value_free_stack(CONF_VALUE *a, LHASH *conf)
+	{
+	CONF_VALUE *vv;
+	STACK *sk;
+	int i;
+
+	if (a->name != NULL) return;
+
+	sk=(STACK *)a->value;
+	for (i=sk_num(sk)-1; i>=0; i--)
+		{
+		vv=(CONF_VALUE *)sk_value(sk,i);
+		Free(vv->value);
+		Free(vv->name);
+		Free(vv);
+		}
+	if (sk != NULL) sk_free(sk);
+	Free(a->section);
+	Free(a);
+	}
+
+static unsigned long hash(CONF_VALUE *v)
+	{
+	return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
+	}
+
+static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b)
+	{
+	int i;
+
+	if (a->section != b->section)
+		{
+		i=strcmp(a->section,b->section);
+		if (i) return(i);
+		}
+
+	if ((a->name != NULL) && (b->name != NULL))
+		{
+		i=strcmp(a->name,b->name);
+		return(i);
+		}
+	else if (a->name == b->name)
+		return(0);
+	else
+		return((a->name == NULL)?-1:1);
+	}
+
+/* This was new_section */
+CONF_VALUE *_CONF_new_section(CONF *conf, char *section)
+	{
+	STACK *sk=NULL;
+	int ok=0,i;
+	CONF_VALUE *v=NULL,*vv;
+
+	if ((sk=sk_new_null()) == NULL)
+		goto err;
+	if ((v=(CONF_VALUE *)Malloc(sizeof(CONF_VALUE))) == NULL)
+		goto err;
+	i=strlen(section)+1;
+	if ((v->section=(char *)Malloc(i)) == NULL)
+		goto err;
+
+	memcpy(v->section,section,i);
+	v->name=NULL;
+	v->value=(char *)sk;
+	
+	vv=(CONF_VALUE *)lh_insert(conf->data,v);
+	if (vv != NULL)
+		{
+#if !defined(NO_STDIO) && !defined(WIN16)
+		fprintf(stderr,"internal fault\n");
+#endif
+		abort();
+		}
+	ok=1;
+err:
+	if (!ok)
+		{
+		if (sk != NULL) sk_free(sk);
+		if (v != NULL) Free(v);
+		v=NULL;
+		}
+	return(v);
+	}
+
+IMPLEMENT_STACK_OF(CONF_VALUE)