/* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 1998-2010 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 * . */ /* Portions Copyright (c) 1990 Regents of the University of Michigan. * All rights reserved. */ #include "portable.h" #include #include #include #include #include #include "ldap-int.h" char * ldap_first_attribute( LDAP *ld, LDAPMessage *entry, BerElement **berout ) { int rc; ber_tag_t tag; ber_len_t len = 0; char *attr; BerElement *ber; Debug( LDAP_DEBUG_TRACE, "ldap_first_attribute\n", 0, 0, 0 ); assert( ld != NULL ); assert( LDAP_VALID( ld ) ); assert( entry != NULL ); assert( berout != NULL ); *berout = NULL; ber = ldap_alloc_ber_with_options( ld ); if( ber == NULL ) { return NULL; } *ber = *entry->lm_ber; /* * Skip past the sequence, dn, sequence of sequence leaving * us at the first attribute. */ tag = ber_scanf( ber, "{xl{" /*}}*/, &len ); if( tag == LBER_ERROR ) { ld->ld_errno = LDAP_DECODING_ERROR; ber_free( ber, 0 ); return NULL; } /* set the length to avoid overrun */ rc = ber_set_option( ber, LBER_OPT_REMAINING_BYTES, &len ); if( rc != LBER_OPT_SUCCESS ) { ld->ld_errno = LDAP_LOCAL_ERROR; ber_free( ber, 0 ); return NULL; } if ( ber_pvt_ber_remaining( ber ) == 0 ) { assert( len == 0 ); ber_free( ber, 0 ); return NULL; } assert( len != 0 ); /* snatch the first attribute */ tag = ber_scanf( ber, "{ax}", &attr ); if( tag == LBER_ERROR ) { ld->ld_errno = LDAP_DECODING_ERROR; ber_free( ber, 0 ); return NULL; } *berout = ber; return attr; } /* ARGSUSED */ char * ldap_next_attribute( LDAP *ld, LDAPMessage *entry, BerElement *ber ) { ber_tag_t tag; char *attr; Debug( LDAP_DEBUG_TRACE, "ldap_next_attribute\n", 0, 0, 0 ); assert( ld != NULL ); assert( LDAP_VALID( ld ) ); assert( entry != NULL ); assert( ber != NULL ); if ( ber_pvt_ber_remaining( ber ) == 0 ) { return NULL; } /* skip sequence, snarf attribute type, skip values */ tag = ber_scanf( ber, "{ax}", &attr ); if( tag == LBER_ERROR ) { ld->ld_errno = LDAP_DECODING_ERROR; return NULL; } return attr; } /* Fetch attribute type and optionally fetch values. The type * and values are referenced in-place from the BerElement, they are * not dup'd into malloc'd memory. */ /* ARGSUSED */ int ldap_get_attribute_ber( LDAP *ld, LDAPMessage *entry, BerElement *ber, BerValue *attr, BerVarray *vals ) { ber_tag_t tag; int rc = LDAP_SUCCESS; Debug( LDAP_DEBUG_TRACE, "ldap_get_attribute_ber\n", 0, 0, 0 ); assert( ld != NULL ); assert( LDAP_VALID( ld ) ); assert( entry != NULL ); assert( ber != NULL ); assert( attr != NULL ); attr->bv_val = NULL; attr->bv_len = 0; if ( ber_pvt_ber_remaining( ber ) ) { ber_len_t siz = sizeof( BerValue ); /* skip sequence, snarf attribute type */ tag = ber_scanf( ber, vals ? "{mM}" : "{mx}", attr, vals, &siz, 0 ); if( tag == LBER_ERROR ) { rc = ld->ld_errno = LDAP_DECODING_ERROR; } } return rc; }