mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
162 lines
3.2 KiB
C
162 lines
3.2 KiB
C
/* $OpenLDAP$ */
|
|
/*
|
|
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
|
|
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
|
|
*/
|
|
/* Portions
|
|
* Copyright (c) 1994 Regents of the University of Michigan.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that this notice is preserved and that due credit is given
|
|
* to the University of Michigan at Ann Arbor. The name of the University
|
|
* may not be used to endorse or promote products derived from this
|
|
* software without specific prior written permission. This software
|
|
* is provided ``as is'' without express or implied warranty.
|
|
*
|
|
* sort.c: LDAP library entry and value sort routines
|
|
*/
|
|
|
|
#include "portable.h"
|
|
|
|
#include <stdio.h>
|
|
#include <ac/stdlib.h>
|
|
|
|
#include <ac/ctype.h>
|
|
#include <ac/string.h>
|
|
#include <ac/time.h>
|
|
|
|
|
|
#include "ldap-int.h"
|
|
|
|
struct entrything {
|
|
char **et_vals;
|
|
LDAPMessage *et_msg;
|
|
int (*et_cmp_fn) LDAP_P((const char *a, const char *b));
|
|
};
|
|
|
|
static int et_cmp LDAP_P(( const void *aa, const void *bb));
|
|
|
|
|
|
int
|
|
ldap_sort_strcasecmp(
|
|
LDAP_CONST void *a,
|
|
LDAP_CONST void *b
|
|
)
|
|
{
|
|
return( strcasecmp( *(char *const *)a, *(char *const *)b ) );
|
|
}
|
|
|
|
static int
|
|
et_cmp(
|
|
const void *aa,
|
|
const void *bb
|
|
)
|
|
{
|
|
int i, rc;
|
|
const struct entrything *a = (const struct entrything *)aa;
|
|
const struct entrything *b = (const struct entrything *)bb;
|
|
|
|
if ( a->et_vals == NULL && b->et_vals == NULL )
|
|
return( 0 );
|
|
if ( a->et_vals == NULL )
|
|
return( -1 );
|
|
if ( b->et_vals == NULL )
|
|
return( 1 );
|
|
|
|
for ( i = 0; a->et_vals[i] && b->et_vals[i]; i++ ) {
|
|
if ( (rc = a->et_cmp_fn( a->et_vals[i], b->et_vals[i] )) != 0 ) {
|
|
return( rc );
|
|
}
|
|
}
|
|
|
|
if ( a->et_vals[i] == NULL && b->et_vals[i] == NULL )
|
|
return( 0 );
|
|
if ( a->et_vals[i] == NULL )
|
|
return( -1 );
|
|
return( 1 );
|
|
}
|
|
|
|
int
|
|
ldap_sort_entries(
|
|
LDAP *ld,
|
|
LDAPMessage **chain,
|
|
LDAP_CONST char *attr, /* NULL => sort by DN */
|
|
int (*cmp) (LDAP_CONST char *, LDAP_CONST char *)
|
|
)
|
|
{
|
|
int i, count;
|
|
struct entrything *et;
|
|
LDAPMessage *e, *last;
|
|
LDAPMessage **ep;
|
|
|
|
count = ldap_count_entries( ld, *chain );
|
|
|
|
|
|
if ( count < 0 ) {
|
|
if( ld != NULL ) {
|
|
ld->ld_errno = LDAP_PARAM_ERROR;
|
|
}
|
|
return -1;
|
|
|
|
} else if ( count < 2 ) {
|
|
/* zero or one entries -- already sorted! */
|
|
return 0;
|
|
}
|
|
|
|
if ( (et = (struct entrything *) LDAP_MALLOC( count *
|
|
sizeof(struct entrything) )) == NULL ) {
|
|
ld->ld_errno = LDAP_NO_MEMORY;
|
|
return( -1 );
|
|
}
|
|
|
|
e = *chain;
|
|
for ( i = 0; i < count; i++ ) {
|
|
et[i].et_cmp_fn = cmp;
|
|
et[i].et_msg = e;
|
|
if ( attr == NULL ) {
|
|
char *dn;
|
|
|
|
dn = ldap_get_dn( ld, e );
|
|
et[i].et_vals = ldap_explode_dn( dn, 1 );
|
|
LDAP_FREE( dn );
|
|
} else {
|
|
et[i].et_vals = ldap_get_values( ld, e, attr );
|
|
}
|
|
|
|
e = e->lm_chain;
|
|
}
|
|
last = e;
|
|
|
|
qsort( et, count, sizeof(struct entrything), et_cmp );
|
|
|
|
ep = chain;
|
|
for ( i = 0; i < count; i++ ) {
|
|
*ep = et[i].et_msg;
|
|
ep = &(*ep)->lm_chain;
|
|
|
|
ldap_value_free( et[i].et_vals );
|
|
}
|
|
*ep = last;
|
|
LDAP_FREE( (char *) et );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int
|
|
ldap_sort_values(
|
|
LDAP *ld,
|
|
char **vals,
|
|
int (*cmp) (LDAP_CONST void *, LDAP_CONST void *)
|
|
)
|
|
{
|
|
int nel;
|
|
|
|
for ( nel = 0; vals[nel] != NULL; nel++ )
|
|
; /* NULL */
|
|
|
|
qsort( vals, nel, sizeof(char *), cmp );
|
|
|
|
return( 0 );
|
|
}
|