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627 lines
11 KiB
C
627 lines
11 KiB
C
/* dn.c - routines for dealing with distinguished names */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/ctype.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include "ldap_pvt.h"
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#include "slap.h"
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#define B4LEADTYPE 0
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#define B4TYPE 1
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#define INOIDTYPE 2
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#define INKEYTYPE 3
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#define B4EQUAL 4
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#define B4VALUE 5
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#define INVALUE 6
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#define INQUOTEDVALUE 7
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#define B4SEPARATOR 8
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/* schema_init.c */
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extern int
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dnNormalize( Syntax *syntax, struct berval *val, struct berval **normalized );
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/*
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* dn_validate - validate and compress dn. the dn is
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* compressed in place are returned if valid.
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*/
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char *
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dn_validate( char *dn_in )
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{
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char *d, *s;
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int state, gotesc;
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char *dn = dn_in;
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gotesc = 0;
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state = B4LEADTYPE;
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for ( d = s = dn; *s; s++ ) {
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switch ( state ) {
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case B4LEADTYPE:
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case B4TYPE:
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if ( OID_LEADCHAR(*s) ) {
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state = INOIDTYPE;
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*d++ = *s;
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} else if ( ATTR_LEADCHAR(*s) ) {
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state = INKEYTYPE;
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*d++ = *s;
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} else if ( ! ASCII_SPACE( *s ) ) {
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dn = NULL;
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state = INKEYTYPE;
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*d++ = *s;
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}
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break;
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case INOIDTYPE:
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if ( OID_CHAR(*s) ) {
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*d++ = *s;
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} else if ( *s == '=' ) {
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state = B4VALUE;
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*d++ = *s;
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} else if ( ASCII_SPACE( *s ) ) {
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state = B4EQUAL;
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} else {
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dn = NULL;
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*d++ = *s;
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}
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break;
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case INKEYTYPE:
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if ( ATTR_CHAR(*s) ) {
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*d++ = *s;
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} else if ( *s == '=' ) {
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state = B4VALUE;
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*d++ = *s;
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} else if ( ASCII_SPACE( *s ) ) {
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state = B4EQUAL;
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} else {
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dn = NULL;
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*d++ = *s;
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}
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break;
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case B4EQUAL:
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if ( *s == '=' ) {
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state = B4VALUE;
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*d++ = *s;
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} else if ( ! ASCII_SPACE( *s ) ) {
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/* not a valid dn - but what can we do here? */
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*d++ = *s;
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dn = NULL;
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}
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break;
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case B4VALUE:
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if ( *s == '"' ) {
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state = INQUOTEDVALUE;
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*d++ = *s;
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} else if ( ! ASCII_SPACE( *s ) ) {
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state = INVALUE;
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*d++ = *s;
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}
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break;
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case INVALUE:
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if ( !gotesc && RDN_SEPARATOR( *s ) ) {
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while ( ASCII_SPACE( *(d - 1) ) )
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d--;
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state = B4TYPE;
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if ( *s == '+' ) {
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*d++ = *s;
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} else {
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*d++ = ',';
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}
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} else if ( gotesc && !RDN_NEEDSESCAPE( *s ) &&
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!RDN_SEPARATOR( *s ) )
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{
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*--d = *s;
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d++;
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} else if( !ASCII_SPACE( *s ) || !ASCII_SPACE( *(d - 1) ) ) {
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*d++ = *s;
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}
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break;
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case INQUOTEDVALUE:
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if ( !gotesc && *s == '"' ) {
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state = B4SEPARATOR;
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*d++ = *s;
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} else if ( gotesc && !RDN_NEEDSESCAPE( *s ) ) {
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*--d = *s;
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d++;
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} else if( !ASCII_SPACE( *s ) || !ASCII_SPACE( *(d - 1) ) ) {
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*d++ = *s;
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}
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break;
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case B4SEPARATOR:
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if ( RDN_SEPARATOR( *s ) ) {
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state = B4TYPE;
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*d++ = *s;
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} else if ( !ASCII_SPACE( *s ) ) {
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dn = NULL;
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}
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break;
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default:
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dn = NULL;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"dn_validate: unknown state %d for dn \"%s\".\n",
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state, dn_in ));
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#else
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Debug( LDAP_DEBUG_ANY,
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"dn_validate - unknown state %d\n", state, 0, 0 );
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#endif
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break;
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}
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if ( *s == '\\' ) {
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gotesc = 1;
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} else {
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gotesc = 0;
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}
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}
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/* trim trailing spaces */
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while( d > dn_in && ASCII_SPACE( *(d-1) ) ) {
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--d;
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}
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*d = '\0';
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if( gotesc ) {
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/* shouldn't be left in escape */
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dn = NULL;
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}
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/* check end state */
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switch( state ) {
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case B4LEADTYPE: /* looking for first type */
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case B4SEPARATOR: /* looking for separator */
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case INVALUE: /* inside value */
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break;
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default:
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dn = NULL;
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}
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return( dn );
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}
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/*
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* dn_normalize - put dn into a canonical form suitable for storing
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* in a hash database. this involves normalizing the case as well as
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* the format. the dn is normalized in place as well as returned if valid.
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*/
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char *
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dn_normalize( char *dn )
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{
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char *out;
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struct berval *bvdn, *nbvdn;
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out = NULL;
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bvdn = ber_bvstr( dn );
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if ( dnNormalize( NULL, bvdn, &nbvdn ) == LDAP_SUCCESS ) {
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if ( nbvdn->bv_len <= bvdn->bv_len ) {
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out = dn;
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strcpy( out, nbvdn->bv_val );
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}
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ber_bvfree( nbvdn );
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}
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bvdn->bv_val = NULL; /* prevent bvfree from freeing dn */
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ber_bvfree( bvdn );
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return( out );
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}
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/*
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* dn_parent - return a copy of the dn of dn's parent
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*/
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char *
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dn_parent(
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Backend *be,
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const char *dn
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)
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{
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const char *s;
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int inquote;
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if( dn == NULL ) {
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return NULL;
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}
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while(*dn != '\0' && ASCII_SPACE(*dn)) {
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dn++;
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}
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if( *dn == '\0' ) {
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return NULL;
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}
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if ( be != NULL && be_issuffix( be, dn ) ) {
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return NULL;
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}
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/*
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* assume it is an X.500-style name, which looks like
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* foo=bar,sha=baz,...
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*/
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inquote = 0;
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for ( s = dn; *s; s++ ) {
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if ( *s == '\\' ) {
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if ( *(s + 1) ) {
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s++;
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}
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continue;
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}
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if ( inquote ) {
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if ( *s == '"' ) {
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inquote = 0;
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}
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} else {
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if ( *s == '"' ) {
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inquote = 1;
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} else if ( DN_SEPARATOR( *s ) ) {
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return ch_strdup( &s[1] );
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}
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}
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}
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return ch_strdup( "" );
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}
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char * dn_rdn(
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Backend *be,
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const char *dn_in )
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{
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char *dn, *s;
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int inquote;
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if( dn_in == NULL ) {
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return NULL;
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}
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while(*dn_in && ASCII_SPACE(*dn_in)) {
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dn_in++;
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}
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if( *dn_in == '\0' ) {
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return( NULL );
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}
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if ( be != NULL && be_issuffix( be, dn_in ) ) {
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return( NULL );
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}
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dn = ch_strdup( dn_in );
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inquote = 0;
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for ( s = dn; *s; s++ ) {
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if ( *s == '\\' ) {
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if ( *(s + 1) ) {
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s++;
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}
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continue;
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}
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if ( inquote ) {
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if ( *s == '"' ) {
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inquote = 0;
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}
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} else {
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if ( *s == '"' ) {
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inquote = 1;
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} else if ( DN_SEPARATOR( *s ) ) {
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*s = '\0';
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return( dn );
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}
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}
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}
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return( dn );
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}
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/*
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* return a charray of all subtrees to which the DN resides in
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*/
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char **dn_subtree(
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Backend *be,
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const char *dn )
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{
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char *child, *parent;
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char **subtree = NULL;
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child = ch_strdup( dn );
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do {
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charray_add( &subtree, child );
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parent = dn_parent( be, child );
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free( child );
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child = parent;
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} while ( child != NULL );
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return subtree;
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}
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/*
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* dn_issuffix - tells whether suffix is a suffix of dn. Both dn
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* and suffix must be normalized.
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*/
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int
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dn_issuffix(
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const char *dn,
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const char *suffix
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)
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{
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int dnlen, suffixlen;
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if ( dn == NULL ) {
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return( 0 );
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}
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suffixlen = strlen( suffix );
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dnlen = strlen( dn );
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if ( suffixlen > dnlen ) {
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return( 0 );
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}
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return( strcmp( dn + dnlen - suffixlen, suffix ) == 0 );
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}
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/*
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* get_next_substring(), rdn_attr_type(), rdn_attr_value(), and
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* build_new_dn().
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*
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* Copyright 1999, Juan C. Gomez, All rights reserved.
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* This software is not subject to any license of Silicon Graphics
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* Inc. or Purdue University.
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*
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* Redistribution and use in source and binary forms are permitted
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* without restriction or fee of any kind as long as this notice
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* is preserved.
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*
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*/
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/* get_next_substring:
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*
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* Gets next substring in s, using d (or the end of the string '\0') as a
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* string delimiter, and places it in a duplicated memory space. Leading
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* spaces are ignored. String s **must** be null-terminated.
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*/
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static char *
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get_next_substring( const char * s, char d )
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{
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char *str, *r;
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r = str = ch_malloc( strlen(s) + 1 );
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/* Skip leading spaces */
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while ( *s && ASCII_SPACE(*s) ) {
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s++;
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}
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/* Copy word */
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while ( *s && (*s != d) ) {
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/* Don't stop when you see trailing spaces may be a multi-word
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* string, i.e. name=John Doe!
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*/
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*str++ = *s++;
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}
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*str = '\0';
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return r;
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}
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/* rdn_attr_type:
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*
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* Given a string (i.e. an rdn) of the form:
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* "attribute_type = attribute_value"
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* this function returns the type of an attribute, that is the
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* string "attribute_type" which is placed in newly allocated
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* memory. The returned string will be null-terminated.
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*/
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char * rdn_attr_type( const char * s )
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{
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return get_next_substring( s, '=' );
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}
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/* rdn_attr_value:
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*
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* Given a string (i.e. an rdn) of the form:
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* "attribute_type = attribute_value"
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* this function returns "attribute_type" which is placed in newly allocated
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* memory. The returned string will be null-terminated and may contain
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* spaces (i.e. "John Doe\0").
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*/
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char *
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rdn_attr_value( const char * rdn )
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{
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const char *str;
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if ( (str = strchr( rdn, '=' )) != NULL ) {
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return get_next_substring(++str, '\0');
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}
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return NULL;
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}
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/* rdn_attrs:
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*
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* Given a string (i.e. an rdn) of the form:
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* "attribute_type=attribute_value[+attribute_type=attribute_value[...]]"
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* this function stores the types of the attributes in ptypes, that is the
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* array of strings "attribute_type" which is placed in newly allocated
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* memory, and the values of the attributes in pvalues, that is the
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* array of strings "attribute_value" which is placed in newly allocated
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* memory. Returns 0 on success, -1 on failure.
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*
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* note: got part of the code from dn_validate
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*/
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int
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rdn_attrs( const char * rdn_in, char ***ptypes, char ***pvalues)
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{
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char **parts, **p;
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*ptypes = NULL;
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*pvalues = NULL;
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/*
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* explode the rdn in parts
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*/
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parts = ldap_explode_rdn( rdn_in, 0 );
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if ( parts == NULL ) {
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return( -1 );
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}
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for ( p = parts; p[0]; p++ ) {
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char *s, *e, *d;
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/* split each rdn part in type value */
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s = strchr( p[0], '=' );
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if ( s == NULL ) {
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charray_free( *ptypes );
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charray_free( *pvalues );
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charray_free( parts );
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return( -1 );
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}
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/* type should be fine */
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charray_add_n( ptypes, p[0], ( s-p[0] ) );
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/* value needs to be unescaped
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* (maybe this should be moved to ldap_explode_rdn?) */
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for ( e = d = s + 1; e[0]; e++ ) {
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if ( *e != '\\' ) {
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*d++ = *e;
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}
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}
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d[0] = '\0';
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charray_add( pvalues, s + 1 );
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}
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/* free array */
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charray_free( parts );
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return( 0 );
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}
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/* rdn_validate:
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*
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* 1 if rdn is a legal rdn;
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* 0 otherwise (including a sequence of rdns)
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*
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* note: got it from dn_rdn; it should be rewritten
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* according to dn_validate
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*/
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int
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rdn_validate( const char * rdn )
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{
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int inquote;
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if ( rdn == NULL ) {
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return( 0 );
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}
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if ( strchr( rdn, '=' ) == NULL ) {
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return( 0 );
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}
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while ( *rdn && ASCII_SPACE( *rdn ) ) {
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rdn++;
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}
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if( *rdn == '\0' ) {
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return( 0 );
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}
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inquote = 0;
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for ( ; *rdn; rdn++ ) {
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if ( *rdn == '\\' ) {
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if ( *(rdn + 1) ) {
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rdn++;
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}
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continue;
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}
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if ( inquote ) {
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if ( *rdn == '"' ) {
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inquote = 0;
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}
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} else {
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if ( *rdn == '"' ) {
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inquote = 1;
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} else if ( DN_SEPARATOR( *rdn ) ) {
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return( 0 );
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}
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}
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}
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return( 1 );
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}
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/* build_new_dn:
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*
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* Used by ldbm/bdb2 back_modrdn to create the new dn of entries being
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* renamed.
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*
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* new_dn = parent (p_dn) + separator(s) + rdn (newrdn) + null.
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*/
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void
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build_new_dn( char ** new_dn,
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const char *e_dn,
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const char * p_dn,
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const char * newrdn )
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{
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if ( p_dn == NULL ) {
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*new_dn = ch_strdup( newrdn );
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return;
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}
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*new_dn = (char *) ch_malloc( strlen( p_dn ) + strlen( newrdn ) + 3 );
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strcpy( *new_dn, newrdn );
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strcat( *new_dn, "," );
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strcat( *new_dn, p_dn );
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}
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