Adding upstream version 2.6.7+dfsg.upstream/2.6.7+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 361 insertions, 0 deletions

diff --git a/libraries/libldap/vlvctrl.c b/libraries/libldap/vlvctrl.c
new file mode 100644
index 0000000..db009df
--- /dev/null
+++ b/libraries/libldap/vlvctrl.c
@@ -0,0 +1,361 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 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
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions 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.
+   
+   vlvinfop  (IN)  The address of an LDAPVLVInfo structure whose contents 
+				   are used to construct the value of the control
+				   that is created.
+   
+   value     (OUT) A struct berval that contains the value to be assigned to the ldctl_value member
+				   of an LDAPControl structure that contains the 
+				   VirtualListViewRequest control.
+				   The bv_val member of the berval structure
+				   SHOULD be freed when it is no longer in use by
+				   calling ldap_memfree().
+					  
+   
+   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_value(
+	LDAP *ld,
+	LDAPVLVInfo *vlvinfop,
+	struct berval *value )
+{
+	ber_tag_t tag;
+	BerElement *ber;
+
+	if ( ld == NULL || vlvinfop == NULL || value == NULL ) {
+		if ( ld )
+			ld->ld_errno = LDAP_PARAM_ERROR;
+		return LDAP_PARAM_ERROR;
+	}
+
+	assert( LDAP_VALID( ld ) );
+
+	value->bv_val = NULL;
+	value->bv_len = 0;
+	ld->ld_errno = LDAP_SUCCESS;
+
+	ber = ldap_alloc_ber_with_options( ld );
+	if ( ber == NULL ) {
+		ld->ld_errno = LDAP_NO_MEMORY;
+		return ld->ld_errno;
+	}
+
+	tag = ber_printf( ber, "{ii" /*}*/,
+		vlvinfop->ldvlv_before_count,
+		vlvinfop->ldvlv_after_count );
+	if ( tag == LBER_ERROR ) {
+		goto error_return;
+	}
+
+	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 error_return;
+		}
+
+	} else {
+		tag = ber_printf( ber, "tO",
+			LDAP_VLVBYVALUE_IDENTIFIER,
+			vlvinfop->ldvlv_attrvalue );
+		if ( tag == LBER_ERROR ) {
+			goto error_return;
+		}
+	}
+
+	if ( vlvinfop->ldvlv_context ) {
+		tag = ber_printf( ber, "tO",
+			LDAP_VLVCONTEXT_IDENTIFIER,
+			vlvinfop->ldvlv_context );
+		if ( tag == LBER_ERROR ) {
+			goto error_return;
+		}
+	}
+
+	tag = ber_printf( ber, /*{*/ "N}" ); 
+	if ( tag == LBER_ERROR ) {
+		goto error_return;
+	}
+
+	if ( ber_flatten2( ber, value, 1 ) == -1 ) {
+		ld->ld_errno = LDAP_NO_MEMORY;
+	}
+
+	if ( 0 ) {
+error_return:;
+		ld->ld_errno = LDAP_ENCODING_ERROR;
+	}
+
+	if ( ber != NULL ) {
+		ber_free( ber, 1 );
+	}
+
+	return ld->ld_errno;
+}
+
+/*---
+   ldap_create_vlv_control
+   
+   Create and encode the Virtual List View control.
+
+   ld        (IN)  An LDAP session handle.
+   
+   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 )
+{
+	struct berval	value;
+
+	if ( ctrlp == NULL ) {
+		ld->ld_errno = LDAP_PARAM_ERROR;
+		return ld->ld_errno;
+	}
+
+	ld->ld_errno = ldap_create_vlv_control_value( ld, vlvinfop, &value );
+	if ( ld->ld_errno == LDAP_SUCCESS ) {
+
+		ld->ld_errno = ldap_control_create( LDAP_CONTROL_VLVREQUEST,
+			1, &value, 0, ctrlp );
+		if ( ld->ld_errno != LDAP_SUCCESS ) {
+			LDAP_FREE( value.bv_val );
+		}
+	}
+
+	return ld->ld_errno;
+}
+
+
+/*---
+   ldap_parse_vlvresponse_control
+   
+   Decode the Virtual List View control return information.
+
+   ld           (IN)   An LDAP session handle.
+   
+   ctrl         (IN)   The address of the LDAPControl structure.
+   
+   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 occurred.
+					   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),
+		operationsError (1),
+		unwillingToPerform (53),
+		insufficientAccessRights (50),
+		busy (51),
+		timeLimitExceeded (3),
+		adminLimitExceeded (11),
+		sortControlMissing (60),
+		offsetRangeError (61),
+		other (80) },
+		contextID     OCTET STRING OPTIONAL }
+   
+---*/
+
+int
+ldap_parse_vlvresponse_control(
+	LDAP *ld,
+	LDAPControl *ctrl,
+	ber_int_t *target_posp,
+	ber_int_t *list_countp,
+	struct berval  **contextp,
+	ber_int_t *errcodep )
+{
+	BerElement  *ber;
+	ber_int_t 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 (ctrl == NULL) {
+		ld->ld_errno = LDAP_PARAM_ERROR;
+		return(ld->ld_errno);
+	}
+
+	if (strcmp(LDAP_CONTROL_VLVRESPONSE, ctrl->ldctl_oid) != 0) {
+		/* Not VLV Response control */
+		ld->ld_errno = LDAP_CONTROL_NOT_FOUND;
+		return(ld->ld_errno);
+	}
+
+	/* Create a BerElement from the berval returned in the control. */
+	ber = ber_init(&ctrl->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);
+}