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-rw-r--r--ldap/c-sdk/libldap/psearch.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/ldap/c-sdk/libldap/psearch.c b/ldap/c-sdk/libldap/psearch.c
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+++ b/ldap/c-sdk/libldap/psearch.c
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+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+/*
+ * psearch.c - Persistent search and "Entry Change Notification" support.
+ */
+#include "ldap-int.h"
+
+
+int
+LDAP_CALL
+ldap_create_persistentsearch_control( LDAP *ld, int changetypes,
+ int changesonly, int return_echg_ctls, char ctl_iscritical,
+ LDAPControl **ctrlp )
+{
+ BerElement *ber;
+ int rc;
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
+ return( LDAP_PARAM_ERROR );
+ }
+
+ if ( ctrlp == NULL || ( changetypes & ~LDAP_CHANGETYPE_ANY ) != 0 ) {
+ rc = LDAP_PARAM_ERROR;
+ goto report_error_and_return;
+ }
+
+ /*
+ * create a Persistent Search control. The control value looks like this:
+ *
+ * PersistentSearch ::= SEQUENCE {
+ * changeTypes INTEGER,
+ * -- the changeTypes field is the logical OR of
+ * -- one or more of these values: add (1), delete (2),
+ * -- modify (4), modDN (8). It specifies which types of
+ * -- changes will cause an entry to be returned.
+ * changesOnly BOOLEAN, -- skip initial search?
+ * returnECs BOOLEAN, -- return "Entry Change" controls?
+ * }
+ */
+ if (( nsldapi_alloc_ber_with_options( ld, &ber )) != LDAP_SUCCESS ) {
+ rc = LDAP_NO_MEMORY;
+ goto report_error_and_return;
+ }
+
+ if ( ber_printf( ber, "{ibb}", changetypes, changesonly,
+ return_echg_ctls ) == -1 ) {
+ ber_free( ber, 1 );
+ rc = LDAP_ENCODING_ERROR;
+ goto report_error_and_return;
+ }
+
+ rc = nsldapi_build_control( LDAP_CONTROL_PERSISTENTSEARCH, ber, 1,
+ ctl_iscritical, ctrlp );
+
+report_error_and_return:
+ LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
+ return( rc );
+}
+
+
+int
+LDAP_CALL
+ldap_parse_entrychange_control( LDAP *ld, LDAPControl **ctrls, ber_int_t *chgtypep,
+ char **prevdnp, int *chgnumpresentp, ber_int_t *chgnump )
+{
+ BerElement *ber;
+ int rc, i;
+ ber_int_t changetype;
+ ber_len_t len;
+ ber_int_t along;
+ char *previousdn;
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
+ return( LDAP_PARAM_ERROR );
+ }
+
+ /*
+ * find the entry change notification in the list of controls
+ */
+ for ( i = 0; ctrls != NULL && ctrls[i] != NULL; ++i ) {
+ if ( strcmp( ctrls[i]->ldctl_oid, LDAP_CONTROL_ENTRYCHANGE ) == 0 ) {
+ break;
+ }
+ }
+
+ if ( ctrls == NULL || ctrls[i] == NULL ) {
+ rc = LDAP_CONTROL_NOT_FOUND;
+ goto report_error_and_return;
+ }
+
+ /*
+ * allocate a BER element from the control value and parse it. The control
+ * value should look like this:
+ *
+ * EntryChangeNotification ::= SEQUENCE {
+ * changeType ENUMERATED {
+ * add (1), -- these values match the
+ * delete (2), -- values used for changeTypes
+ * modify (4), -- in the PersistentSearch control.
+ * modDN (8),
+ * },
+ * previousDN LDAPDN OPTIONAL, -- modDN ops. only
+ * changeNumber INTEGER OPTIONAL, -- if supported
+ * }
+ */
+ if (( ber = ber_init( &(ctrls[i]->ldctl_value))) == NULL ) {
+ rc = LDAP_NO_MEMORY;
+ goto report_error_and_return;
+ }
+
+ if ( ber_scanf( ber, "{e", &along ) == LBER_ERROR ) {
+ ber_free( ber, 1 );
+ rc = LDAP_DECODING_ERROR;
+ goto report_error_and_return;
+ }
+ changetype = along;
+
+ if ( changetype == LDAP_CHANGETYPE_MODDN ) {
+ if ( ber_scanf( ber, "a", &previousdn ) == LBER_ERROR ) {
+ ber_free( ber, 1 );
+ rc = LDAP_DECODING_ERROR;
+ goto report_error_and_return;
+ }
+ } else {
+ previousdn = NULL;
+ }
+
+ if ( chgtypep != NULL ) {
+ *chgtypep = changetype;
+ }
+ if ( prevdnp != NULL ) {
+ *prevdnp = previousdn;
+ } else if ( previousdn != NULL ) {
+ NSLDAPI_FREE( previousdn );
+ }
+
+ if ( chgnump != NULL ) { /* check for optional changenumber */
+ if ( ber_peek_tag( ber, &len ) == LBER_INTEGER
+ && ber_get_int( ber, chgnump ) != LBER_ERROR ) {
+ if ( chgnumpresentp != NULL ) {
+ *chgnumpresentp = 1;
+ }
+ } else {
+ if ( chgnumpresentp != NULL ) {
+ *chgnumpresentp = 0;
+ }
+ }
+ }
+
+ ber_free( ber, 1 );
+ rc = LDAP_SUCCESS;
+
+report_error_and_return:
+ LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
+ return( rc );
+}