/* * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved. * COPYING RESTRICTIONS APPLY, see COPYRIGHT file */ /* Adapted for inclusion into OpenLDAP by Kurt D. Zeilenga */ /*--- * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved. * * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND * TREATIES. USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT * TO VERSION 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS * AVAILABLE AT HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" * IN THE TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION * OF THIS WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP * PUBLIC LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT * THE PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY. *---*/ /* Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License * can be found in the file "build/LICENSE-2.0.1" in this distribution * of OpenLDAP Software. */ #include "portable.h" #include <stdio.h> #include <ac/stdlib.h> #include <ac/string.h> #include <ac/time.h> #include "ldap-int.h" #define LDAP_VLVBYINDEX_IDENTIFIER 0xa0L #define LDAP_VLVBYVALUE_IDENTIFIER 0x81L #define LDAP_VLVCONTEXT_IDENTIFIER 0x04L /*--- ldap_create_vlv_control Create and encode the Virtual List View control. ld (IN) An LDAP session handle, as obtained from a call to ldap_init(). vlvinfop (IN) The address of an LDAPVLVInfo structure whose contents are used to construct the value of the control that is created. ctrlp (OUT) A result parameter that will be assigned the address of an LDAPControl structure that contains the VirtualListViewRequest control created by this function. The memory occupied by the LDAPControl structure SHOULD be freed when it is no longer in use by calling ldap_control_free(). Ber encoding VirtualListViewRequest ::= SEQUENCE { beforeCount INTEGER (0 .. maxInt), afterCount INTEGER (0 .. maxInt), CHOICE { byoffset [0] SEQUENCE, { offset INTEGER (0 .. maxInt), contentCount INTEGER (0 .. maxInt) } [1] greaterThanOrEqual assertionValue } contextID OCTET STRING OPTIONAL } Note: The first time the VLV control is created, the ldvlv_context field of the LDAPVLVInfo structure should be set to NULL. The context obtained from calling ldap_parse_vlv_control() should be used as the context in the next ldap_create_vlv_control call. ---*/ int ldap_create_vlv_control( LDAP *ld, LDAPVLVInfo *vlvinfop, LDAPControl **ctrlp ) { ber_tag_t tag; BerElement *ber; assert( ld != NULL ); assert( LDAP_VALID( ld ) ); assert( vlvinfop != NULL ); assert( ctrlp != NULL ); if ((ber = ldap_alloc_ber_with_options(ld)) == NULL) { ld->ld_errno = LDAP_NO_MEMORY; return(LDAP_NO_MEMORY); } tag = ber_printf(ber, "{ii" /*}*/, vlvinfop->ldvlv_before_count, vlvinfop->ldvlv_after_count); if( tag == LBER_ERROR ) goto exit; if (vlvinfop->ldvlv_attrvalue == NULL) { tag = ber_printf(ber, "t{iiN}", LDAP_VLVBYINDEX_IDENTIFIER, vlvinfop->ldvlv_offset, vlvinfop->ldvlv_count); if( tag == LBER_ERROR ) goto exit; } else { tag = ber_printf(ber, "tO", LDAP_VLVBYVALUE_IDENTIFIER, vlvinfop->ldvlv_attrvalue); if( tag == LBER_ERROR ) goto exit; } if (vlvinfop->ldvlv_context) { tag = ber_printf(ber, "tO", LDAP_VLVCONTEXT_IDENTIFIER, vlvinfop->ldvlv_context); if( tag == LBER_ERROR ) goto exit; } tag = ber_printf(ber, /*{*/ "N}"); if( tag == LBER_ERROR ) goto exit; ld->ld_errno = ldap_create_control( LDAP_CONTROL_VLVREQUEST, ber, 1, ctrlp); ber_free(ber, 1); return(ld->ld_errno); exit: ber_free(ber, 1); ld->ld_errno = LDAP_ENCODING_ERROR; return(ld->ld_errno); } /*--- ldap_parse_vlv_control Decode the Virtual List View control return information. ld (IN) An LDAP session handle. ctrls (IN) The address of a NULL-terminated array of LDAPControl structures, typically obtained by a call to ldap_parse_result(). target_posp (OUT) This result parameter is filled in with the list index of the target entry. If this parameter is NULL, the target position is not returned. list_countp (OUT) This result parameter is filled in with the server's estimate of the size of the list. If this parameter is NULL, the size is not returned. contextp (OUT) This result parameter is filled in with the address of a struct berval that contains the server- generated context identifier if one was returned by the server. If the server did not return a context identifier, this parameter will be set to NULL, even if an error occured. The returned context SHOULD be used in the next call to create a VLV sort control. The struct berval returned SHOULD be disposed of by calling ber_bvfree() when it is no longer needed. If NULL is passed for contextp, the context identifier is not returned. errcodep (OUT) This result parameter is filled in with the VLV result code. If this parameter is NULL, the result code is not returned. Ber encoding VirtualListViewResponse ::= SEQUENCE { targetPosition INTEGER (0 .. maxInt), contentCount INTEGER (0 .. maxInt), virtualListViewResult ENUMERATED { success (0), operatonsError (1), unwillingToPerform (53), insufficientAccessRights (50), busy (51), timeLimitExceeded (3), adminLimitExceeded (11), sortControlMissing (60), offsetRangeError (61), other (80) }, contextID OCTET STRING OPTIONAL } ---*/ int ldap_parse_vlv_control( LDAP *ld, LDAPControl **ctrls, unsigned long *target_posp, unsigned long *list_countp, struct berval **contextp, int *errcodep ) { BerElement *ber; LDAPControl *pControl; int i; unsigned long pos, count, err; ber_tag_t tag, berTag; ber_len_t berLen; assert( ld != NULL ); assert( LDAP_VALID( ld ) ); if (contextp) { *contextp = NULL; /* Make sure we return a NULL if error occurs. */ } if (ctrls == NULL) { ld->ld_errno = LDAP_CONTROL_NOT_FOUND; return(ld->ld_errno); } /* Search the list of control responses for a VLV control. */ for (i=0; ctrls[i]; i++) { pControl = ctrls[i]; if (!strcmp(LDAP_CONTROL_VLVRESPONSE, pControl->ldctl_oid)) goto foundVLVControl; } /* No sort control was found. */ ld->ld_errno = LDAP_CONTROL_NOT_FOUND; return(ld->ld_errno); foundVLVControl: /* Create a BerElement from the berval returned in the control. */ ber = ber_init(&pControl->ldctl_value); if (ber == NULL) { ld->ld_errno = LDAP_NO_MEMORY; return(ld->ld_errno); } /* Extract the data returned in the control. */ tag = ber_scanf(ber, "{iie" /*}*/, &pos, &count, &err); if( tag == LBER_ERROR) { ber_free(ber, 1); ld->ld_errno = LDAP_DECODING_ERROR; return(ld->ld_errno); } /* Since the context is the last item encoded, if caller doesn't want it returned, don't decode it. */ if (contextp) { if (LDAP_VLVCONTEXT_IDENTIFIER == ber_peek_tag(ber, &berLen)) { tag = ber_scanf(ber, "tO", &berTag, contextp); if( tag == LBER_ERROR) { ber_free(ber, 1); ld->ld_errno = LDAP_DECODING_ERROR; return(ld->ld_errno); } } } ber_free(ber, 1); /* Return data to the caller for items that were requested. */ if (target_posp) { *target_posp = pos; } if (list_countp) { *list_countp = count; } if (errcodep) { *errcodep = err; } ld->ld_errno = LDAP_SUCCESS; return(ld->ld_errno); }