+/* abandon.c */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
- */
-/* Portions
- * Copyright (c) 1990 Regents of the University of Michigan.
- * All rights reserved.
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2006 The OpenLDAP Foundation.
+ * All rights reserved.
*
- * abandon.c
+ * 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>.
*/
-
-/*
- * An abandon request looks like this:
- * AbandonRequest ::= MessageID
+/* Portions Copyright (c) 1990 Regents of the University of Michigan.
+ * All rights reserved.
*/
#include "portable.h"
#include "ldap-int.h"
-static int do_abandon LDAP_P((
+/*
+ * An abandon request looks like this:
+ * AbandonRequest ::= [APPLICATION 16] MessageID
+ * and has no response. (Source: RFC 4511)
+ */
+
+static int
+do_abandon(
LDAP *ld,
ber_int_t origid,
ber_int_t msgid,
LDAPControl **sctrls,
- LDAPControl **cctrls));
+ int sendabandon );
/*
* ldap_abandon_ext - perform an ldap extended abandon operation.
LDAPControl **sctrls,
LDAPControl **cctrls )
{
+ int rc;
+
Debug( LDAP_DEBUG_TRACE, "ldap_abandon_ext %d\n", msgid, 0, 0 );
- return do_abandon( ld, msgid, msgid, sctrls, cctrls );
+ /* check client controls */
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+
+ rc = ldap_int_client_controls( ld, cctrls );
+ if ( rc == LDAP_SUCCESS ) {
+ rc = do_abandon( ld, msgid, msgid, sctrls, 1 );
+ }
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+#endif
+
+ return rc;
}
ldap_abandon( LDAP *ld, int msgid )
{
Debug( LDAP_DEBUG_TRACE, "ldap_abandon %d\n", msgid, 0, 0 );
- return do_abandon( ld, msgid, msgid, NULL, NULL ) == LDAP_SUCCESS
+ return ldap_abandon_ext( ld, msgid, NULL, NULL ) == LDAP_SUCCESS
? 0 : -1;
}
+int
+ldap_pvt_discard(
+ LDAP *ld,
+ ber_int_t msgid )
+{
+ int rc;
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+
+ rc = do_abandon( ld, msgid, msgid, NULL, 0 );
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+#endif
+
+ return rc;
+}
+
static int
do_abandon(
LDAP *ld,
ber_int_t origid,
ber_int_t msgid,
LDAPControl **sctrls,
- LDAPControl **cctrls)
+ int sendabandon )
{
BerElement *ber;
- int i, err, sendabandon;
- ber_int_t *old_abandon;
+ int i, err;
+ ber_int_t *old_abandon;
Sockbuf *sb;
LDAPRequest *lr;
Debug( LDAP_DEBUG_TRACE, "do_abandon origid %d, msgid %d\n",
origid, msgid, 0 );
- sendabandon = 1;
-
/* find the request that we are abandoning */
- for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
+start_again:;
+ lr = ld->ld_requests;
+ while ( lr != NULL ) {
if ( lr->lr_msgid == msgid ) { /* this message */
break;
}
+
if ( lr->lr_origid == msgid ) {/* child: abandon it */
- (void) do_abandon( ld,
- msgid, lr->lr_msgid, sctrls, cctrls );
+ (void)do_abandon( ld, lr->lr_origid, lr->lr_msgid,
+ sctrls, sendabandon );
+
+ /* restart, as lr may now be dangling... */
+ goto start_again;
}
+
+ lr = lr->lr_next;
}
if ( lr != NULL ) {
}
}
- if ( ldap_msgdelete( ld, msgid ) == 0 ) {
+ /* ldap_msgdelete locks the res_mutex. Give up the req_mutex
+ * while we're in there.
+ */
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+#endif
+ err = ldap_msgdelete( ld, msgid );
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
+ if ( err == 0 ) {
ld->ld_errno = LDAP_SUCCESS;
return LDAP_SUCCESS;
}
+ /* fetch again the request that we are abandoning */
+ if ( lr != NULL ) {
+ for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
+ /* this message */
+ if ( lr->lr_msgid == msgid ) {
+ break;
+ }
+ }
+ }
+
err = 0;
if ( sendabandon ) {
- /* create a message to send */
- if ( (ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
+ if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
+ /* not connected */
+ err = -1;
+ ld->ld_errno = LDAP_SERVER_DOWN;
+
+ } else if ( ( ber = ldap_alloc_ber_with_options( ld ) ) == NULL ) {
+ /* BER element allocation failed */
err = -1;
ld->ld_errno = LDAP_NO_MEMORY;
} else {
+ /*
+ * We already have the mutex in LDAP_R_COMPILE, so
+ * don't try to get it again.
+ * LDAP_NEXT_MSGID(ld, i);
+ */
+
+ i = ++(ld)->ld_msgid;
#ifdef LDAP_CONNECTIONLESS
- if ( ld->ld_cldapnaddr > 0 ) {
- err = ber_printf( ber, "{isti", /* '}' */
- ++ld->ld_msgid, ld->ld_cldapdn,
- LDAP_REQ_ABANDON, msgid );
+ if ( LDAP_IS_UDP(ld) ) {
+ err = ber_write( ber, ld->ld_options.ldo_peer,
+ sizeof(struct sockaddr), 0);
+ }
+ if ( LDAP_IS_UDP(ld) && ld->ld_options.ldo_version ==
+ LDAP_VERSION2 )
+ {
+ char *dn = ld->ld_options.ldo_cldapdn;
+ if (!dn) dn = "";
+ err = ber_printf( ber, "{isti", /* '}' */
+ i, dn,
+ LDAP_REQ_ABANDON, msgid );
} else
-#endif /* LDAP_CONNECTIONLESS */
+#endif
{
+ /* create a message to send */
err = ber_printf( ber, "{iti", /* '}' */
- ++ld->ld_msgid,
- LDAP_REQ_ABANDON, msgid );
+ i,
+ LDAP_REQ_ABANDON, msgid );
}
- if( err == -1 ) {
+ if ( err == -1 ) {
/* encoding error */
ld->ld_errno = LDAP_ENCODING_ERROR;
} else {
/* close '{' */
- err = ber_printf( ber, /*{*/ "}" );
+ err = ber_printf( ber, /*{*/ "N}" );
- if( err == -1 ) {
+ if ( err == -1 ) {
/* encoding error */
ld->ld_errno = LDAP_ENCODING_ERROR;
}
} else {
/* send the message */
if ( lr != NULL ) {
+ assert( lr->lr_conn != NULL );
sb = lr->lr_conn->lconn_sb;
} else {
sb = ld->ld_sb;
}
- if ( ber_flush( sb, ber, 1 ) != 0 ) {
+ if ( ber_flush2( sb, ber, LBER_FLUSH_FREE_ALWAYS ) != 0 ) {
ld->ld_errno = LDAP_SERVER_DOWN;
err = -1;
} else {
}
if ( lr != NULL ) {
- if ( sendabandon ) {
+ if ( sendabandon || lr->lr_status == LDAP_REQST_WRITING ) {
ldap_free_connection( ld, lr->lr_conn, 0, 1 );
}
+
if ( origid == msgid ) {
ldap_free_request( ld, lr );
}
}
+#ifdef LDAP_R_COMPILE
+ /* ld_abandoned is actually protected by the ld_res_mutex;
+ * give up the ld_req_mutex and get the other */
+ ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
+ ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
+#endif
+
+ /* use bisection */
i = 0;
if ( ld->ld_abandoned != NULL ) {
- for ( ; ld->ld_abandoned[i] != -1; i++ )
- ; /* NULL */
- }
+ int begin,
+ end;
+
+ assert( ld->ld_nabandoned >= 0 );
+
+ begin = 0;
+ end = ld->ld_nabandoned - 1;
+
+ if ( ld->ld_nabandoned == 0 || ld->ld_abandoned[ begin ] > msgid ) {
+ i = 0;
+
+ } else if ( ld->ld_abandoned[ end ] < msgid ) {
+ i = ld->ld_nabandoned;
+
+ } else {
+ int pos, curid;
- old_abandon = ld->ld_abandoned;
+ while ( end >= begin ) {
+ pos = (begin + end)/2;
+ curid = ld->ld_abandoned[ pos ];
- ld->ld_abandoned = (ber_int_t *) LDAP_REALLOC( (char *)
- ld->ld_abandoned, (i + 2) * sizeof(ber_int_t) );
-
- if ( ld->ld_abandoned == NULL ) {
- ld->ld_abandoned = old_abandon;
- ld->ld_errno = LDAP_NO_MEMORY;
- return( ld->ld_errno );
+ if ( msgid < curid ) {
+ end = pos - 1;
+
+ } else if ( msgid > curid ) {
+ begin = pos + 1;
+
+ } else {
+ /* already abandoned? */
+ i = -1;
+ break;
+ }
+ }
+
+ if ( i == 0 ) {
+ i = pos;
+ }
+ }
}
- ld->ld_abandoned[i] = msgid;
- ld->ld_abandoned[i + 1] = -1;
+ if ( i != -1 ) {
+ int pos = i;
+
+ old_abandon = ld->ld_abandoned;
+
+ ld->ld_abandoned = (ber_int_t *) LDAP_REALLOC( (char *)ld->ld_abandoned,
+ ( ld->ld_nabandoned + 1 ) * sizeof( ber_int_t ) );
+
+ if ( ld->ld_abandoned == NULL ) {
+ ld->ld_abandoned = old_abandon;
+ ld->ld_errno = LDAP_NO_MEMORY;
+ goto done;
+ }
+
+ for ( i = ld->ld_nabandoned; i > pos; i-- ) {
+ ld->ld_abandoned[ i ] = ld->ld_abandoned[ i - 1 ];
+ }
+ ld->ld_abandoned[ pos ] = msgid;
+ ++ld->ld_nabandoned;
+ }
if ( err != -1 ) {
ld->ld_errno = LDAP_SUCCESS;
}
+done:;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
+ ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
+#endif
return( ld->ld_errno );
}
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