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/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2022 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 );
}
/*
* 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 );
if ( var->lv_flags & REWRITE_VAR_COPY_NAME )
free( var->lv_name );
if ( var->lv_flags & REWRITE_VAR_COPY_VALUE )
free( var->lv_value.bv_val );
free( var );
}
/*
* Deletes a var tree
*/
int
rewrite_var_delete(
Avlnode *tree
)
{
ldap_avl_free( tree, rewrite_var_free );
return REWRITE_SUCCESS;
}
/*
* 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 * )ldap_avl_find( tree,
( caddr_t )&var, rewrite_var_cmp );
}
int
rewrite_var_replace(
struct rewrite_var *var,
const char *value,
int flags
)
{
ber_len_t len;
assert( value != NULL );
len = strlen( value );
if ( var->lv_flags & REWRITE_VAR_COPY_VALUE ) {
if ( flags & REWRITE_VAR_COPY_VALUE ) {
if ( len <= var->lv_value.bv_len ) {
AC_MEMCPY(var->lv_value.bv_val, value, len + 1);
} else {
free( var->lv_value.bv_val );
var->lv_value.bv_val = strdup( value );
}
} else {
free( var->lv_value.bv_val );
var->lv_value.bv_val = (char *)value;
var->lv_flags &= ~REWRITE_VAR_COPY_VALUE;
}
} else {
if ( flags & REWRITE_VAR_COPY_VALUE ) {
var->lv_value.bv_val = strdup( value );
var->lv_flags |= REWRITE_VAR_COPY_VALUE;
} else {
var->lv_value.bv_val = (char *)value;
}
}
if ( var->lv_value.bv_val == NULL ) {
return -1;
}
var->lv_value.bv_len = len;
return 0;
}
/*
* Inserts a newly created var
*/
struct rewrite_var *
rewrite_var_insert_f(
Avlnode **tree,
const char *name,
const char *value,
int flags
)
{
struct rewrite_var *var;
int rc = 0;
assert( tree != NULL );
assert( name != NULL );
assert( value != NULL );
var = rewrite_var_find( *tree, name );
if ( var != NULL ) {
if ( flags & REWRITE_VAR_UPDATE ) {
(void)rewrite_var_replace( var, value, flags );
goto cleanup;
}
rc = -1;
goto cleanup;
}
var = calloc( sizeof( struct rewrite_var ), 1 );
if ( var == NULL ) {
return NULL;
}
memset( var, 0, sizeof( struct rewrite_var ) );
if ( flags & REWRITE_VAR_COPY_NAME ) {
var->lv_name = strdup( name );
if ( var->lv_name == NULL ) {
rc = -1;
goto cleanup;
}
var->lv_flags |= REWRITE_VAR_COPY_NAME;
} else {
var->lv_name = (char *)name;
}
if ( flags & REWRITE_VAR_COPY_VALUE ) {
var->lv_value.bv_val = strdup( value );
if ( var->lv_value.bv_val == NULL ) {
rc = -1;
goto cleanup;
}
var->lv_flags |= REWRITE_VAR_COPY_VALUE;
} else {
var->lv_value.bv_val = (char *)value;
}
var->lv_value.bv_len = strlen( value );
rc = ldap_avl_insert( tree, ( caddr_t )var,
rewrite_var_cmp, rewrite_var_dup );
cleanup:;
if ( rc != 0 && var ) {
ldap_avl_delete( tree, ( caddr_t )var, rewrite_var_cmp );
rewrite_var_free( var );
var = NULL;
}
return var;
}
/*
* Sets/inserts a var
*/
struct rewrite_var *
rewrite_var_set_f(
Avlnode **tree,
const char *name,
const char *value,
int flags
)
{
struct rewrite_var *var;
assert( tree != NULL );
assert( name != NULL );
assert( value != NULL );
var = rewrite_var_find( *tree, name );
if ( var == NULL ) {
if ( flags & REWRITE_VAR_INSERT ) {
return rewrite_var_insert_f( tree, name, value, flags );
} else {
return NULL;
}
} else {
assert( var->lv_value.bv_val != NULL );
(void)rewrite_var_replace( var, value, flags );
}
return var;
}
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