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ldapsdk.zip
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dn.c
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C/C++ Source or Header
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2000-07-05
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/* dn.c - routines for dealing with distinguished names */
/* $OpenLDAP: pkg/ldap/libraries/libldap/dn.c,v 1.3.2.3 2000/07/04 17:58:51 kurt Exp $ */
/*
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
#include "ldap-int.h"
#if 0
/* this should wait for UTF-8 routines */
#define B4LEADTYPE 0
#define B4TYPE 1
#define INOIDTYPE 2
#define INKEYTYPE 3
#define B4EQUAL 4
#define B4VALUE 5
#define INVALUE 6
#define INQUOTEDVALUE 7
#define B4SEPARATOR 8
/*
* ldap_dn_normalize - put dn into a canonical format
* and return it.
*/
char *
ldap_dn_normalize( const char *dn )
{
char *d, *s;
int state, gotesc;
char *ndn;
if( dn == NULL ) {
return NULL;
}
ndn = LDAP_STRDUP( dn );
if( ndn == NULL ) {
return NULL;
}
gotesc = 0;
state = B4LEADTYPE;
for ( d = s = ndn; *s; s++ ) {
switch ( state ) {
case B4LEADTYPE:
case B4TYPE:
if ( LDAP_LEADOIDCHAR(*s) ) {
state = INOIDTYPE;
*d++ = *s;
} else if ( LDAP_LEADKEYCHAR(*s) ) {
state = INKEYTYPE;
*d++ = *s;
} else if ( ! LDAP_SPACE( *s ) ) {
dn = NULL;
state = INKEYTYPE;
*d++ = *s;
}
break;
case INOIDTYPE:
if ( LDAP_OIDCHAR(*s) ) {
*d++ = *s;
} else if ( *s == '=' ) {
state = B4VALUE;
*d++ = *s;
} else if ( LDAP_SPACE( *s ) ) {
state = B4EQUAL;
} else {
dn = NULL;
*d++ = *s;
}
break;
case INKEYTYPE:
if ( LDAP_KEYCHAR(*s) ) {
*d++ = *s;
} else if ( *s == '=' ) {
state = B4VALUE;
*d++ = *s;
} else if ( LDAP_SPACE( *s ) ) {
state = B4EQUAL;
} else {
dn = NULL;
*d++ = *s;
}
break;
case B4EQUAL:
if ( *s == '=' ) {
state = B4VALUE;
*d++ = *s;
} else if ( ! LDAP_SPACE( *s ) ) {
/* not a valid dn - but what can we do here? */
*d++ = *s;
dn = NULL;
}
break;
case B4VALUE:
if ( *s == '"' ) {
state = INQUOTEDVALUE;
*d++ = *s;
} else if ( ! LDAP_SPACE( *s ) ) {
state = INVALUE;
*d++ = *s;
}
break;
case INVALUE:
if ( !gotesc && LDAP_SEPARATOR( *s ) ) {
while ( LDAP_SPACE( *(d - 1) ) )
d--;
state = B4TYPE;
if ( *s == '+' ) {
*d++ = *s;
} else {
*d++ = ',';
}
} else if ( gotesc && !LDAP_NEEDSESCAPE( *s ) &&
!LDAP_SEPARATOR( *s ) ) {
*--d = *s;
d++;
} else {
*d++ = *s;
}
break;
case INQUOTEDVALUE:
if ( !gotesc && *s == '"' ) {
state = B4SEPARATOR;
*d++ = *s;
} else if ( gotesc && !LDAP_NEEDSESCAPE( *s ) ) {
*--d = *s;
d++;
} else {
*d++ = *s;
}
break;
case B4SEPARATOR:
if ( LDAP_SEPARATOR( *s ) ) {
state = B4TYPE;
*d++ = *s;
}
break;
default:
dn = NULL;
Debug( LDAP_DEBUG_ANY,
"dn_normalize - unknown state %d\n", state, 0, 0 );
break;
}
if ( *s == '\\' ) {
gotesc = 1;
} else {
gotesc = 0;
}
}
*d = '\0';
if( gotesc ) {
/* shouldn't be left in escape */
dn = NULL;
}
/* check end state */
switch( state ) {
case B4LEADTYPE: /* looking for first type */
case B4SEPARATOR: /* looking for separator */
case INVALUE: /* inside value */
break;
default:
dn = NULL;
}
if( dn == NULL ) {
return( ndn );
ndn = NULL;
}
return( ndn );
}
/*
* ldap_dn_parent - return a copy of the dn of dn's parent
*/
char *
ldap_dn_parent(
const char *dn
)
{
const char *s;
int inquote;
if( dn == NULL ) {
return NULL;
}
while(*dn && LDAP_SPACE(*dn)) {
dn++;
}
if( *dn == '\0' ) {
return( NULL );
}
/*
* assume it is an X.500-style name, which looks like
* foo=bar,sha=baz,...
*/
inquote = 0;
for ( s = dn; *s; s++ ) {
if ( *s == '\\' ) {
if ( *(s + 1) ) {
s++;
}
continue;
}
if ( inquote ) {
if ( *s == '"' ) {
inquote = 0;
}
} else {
if ( *s == '"' ) {
inquote = 1;
} else if ( LDAP_DNSEPARATOR( *s ) ) {
return( LDAP_STRDUP( &s[1] ) );
}
}
}
return( LDAP_STRDUP( "" ) );
}
char * ldap_dn_relative(
const char *dn )
{
char *s;
char *rdn;
int inquote;
if( dn == NULL ) {
return NULL;
}
while(*dn && LDAP_SPACE(*dn)) {
dn++;
}
if( *dn == '\0' ) {
return( NULL );
}
rdn = LDAP_STRDUP( dn );
if( rdn == NULL ) {
return NULL;
}
/*
* assume it is an X.500-style name, which looks like
* foo=bar,sha=baz,...
*/
inquote = 0;
for ( s = rdn; *s; s++ ) {
if ( *s == '\\' ) {
if ( *(s + 1) ) {
s++;
}
continue;
}
if ( inquote ) {
if ( *s == '"' ) {
inquote = 0;
}
} else {
if ( *s == '"' ) {
inquote = 1;
} else if ( LDAP_DNSEPARATOR( *s ) ) {
*s = '\0';
return( rdn );
}
}
}
return( rdn );
}
#endif