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/* $OpenLDAP: pkg/ldap/libraries/librewrite/var.c,v 1.3.2.5 2004/03/06 16:10:31 ando Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2004 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENT:
* This work was initially developed by Pierangelo Masarati for
* inclusion in OpenLDAP Software.
*/
#include <portable.h>
#include "rewrite-int.h"
/*
* Compares two vars
*/
static int
rewrite_var_cmp(
const void *c1,
const void *c2
)
{
const struct rewrite_var *v1, *v2;
v1 = ( const struct rewrite_var * )c1;
v2 = ( const struct rewrite_var * )c2;
assert( v1 != NULL );
assert( v2 != NULL );
assert( v1->lv_name != NULL );
assert( v2->lv_name != NULL );
return strcasecmp( v1->lv_name, v2->lv_name );
}
/*
* Duplicate var ?
*/
static int
rewrite_var_dup(
void *c1,
void *c2
)
{
struct rewrite_var *v1, *v2;
v1 = ( struct rewrite_var * )c1;
v2 = ( struct rewrite_var * )c2;
assert( v1 != NULL );
assert( v2 != NULL );
assert( v1->lv_name != NULL );
assert( v2->lv_name != NULL );
return ( strcasecmp( v1->lv_name, v2->lv_name ) == 0 ? -1 : 0 );
}
/*
* Finds a var
*/
struct rewrite_var *
rewrite_var_find(
Avlnode *tree,
const char *name
)
{
struct rewrite_var var;
assert( name != NULL );
var.lv_name = ( char * )name;
return ( struct rewrite_var * )avl_find( tree,
( caddr_t )&var, rewrite_var_cmp );
}
/*
* Inserts a newly created var
*/
struct rewrite_var *
rewrite_var_insert(
Avlnode **tree,
const char *name,
const char *value
)
{
struct rewrite_var *var;
int rc;
assert( tree != NULL );
assert( name != NULL );
assert( value != NULL );
var = calloc( sizeof( struct rewrite_var ), 1 );
if ( var == NULL ) {
return NULL;
}
memset( var, 0, sizeof( struct rewrite_var ) );
var->lv_name = strdup( name );
if ( var->lv_name == NULL ) {
rc = -1;
goto cleanup;
}
var->lv_value.bv_val = strdup( value );
if ( var->lv_value.bv_val == NULL ) {
rc = -1;
goto cleanup;
}
var->lv_value.bv_len = strlen( value );
rc = avl_insert( tree, ( caddr_t )var,
rewrite_var_cmp, rewrite_var_dup );
if ( rc != 0 ) {
rc = -1;
goto cleanup;
}
cleanup:;
if ( rc != 0 ) {
free( var->lv_name );
free( var->lv_value.bv_val );
free( var );
var = NULL;
}
return var;
}
/*
* Sets/inserts a var
*/
struct rewrite_var *
rewrite_var_set(
Avlnode **tree,
const char *name,
const char *value,
int insert
)
{
struct rewrite_var *var;
assert( tree != NULL );
assert( name != NULL );
assert( value != NULL );
var = rewrite_var_find( *tree, name );
if ( var == NULL ) {
if ( insert ) {
return rewrite_var_insert( tree, name, value );
} else {
return NULL;
}
} else {
assert( var->lv_value.bv_val != NULL );
free( var->lv_value.bv_val );
var->lv_value.bv_val = ( char * )value;
var->lv_value.bv_len = strlen( value );
}
return var;
}
/*
* Frees a var
*/
static void
rewrite_var_free(
void *v_var
)
{
struct rewrite_var *var = v_var;
assert( var != NULL );
assert( var->lv_name != NULL );
assert( var->lv_value.bv_val != NULL );
free( var->lv_name );
free( var->lv_value.bv_val );
free( var );
}
/*
* Deletes a var tree
*/
int
rewrite_var_delete(
Avlnode *tree
)
{
avl_free( tree, rewrite_var_free );
return REWRITE_SUCCESS;
}
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