diff options
Diffstat (limited to 'ldap/c-sdk/libraries/libldap/psearch.c')
| -rw-r--r-- | ldap/c-sdk/libraries/libldap/psearch.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/ldap/c-sdk/libraries/libldap/psearch.c b/ldap/c-sdk/libraries/libldap/psearch.c new file mode 100644 index 000000000..71b9da90d --- /dev/null +++ b/ldap/c-sdk/libraries/libldap/psearch.c @@ -0,0 +1,190 @@ +/* ***** 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 ); +} |