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openldap/servers/slapd/result.c
Howard Chu 88d22a1ca3 Simplify write waiter handling 
Writer threads do their own wait using select/poll instead of
asking the listener thread. Eliminates one mutex+one condvar
per conn plus multiple wakeups of the listener thread. Also
fixes writetimeout to wait an exact time, instead of the
approximation used in the listener thread.
2013-09-07 14:53:02 -07:00

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/* result.c - routines to send ldap results, errors, and referrals */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2013 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) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of Michigan at Ann Arbor. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/errno.h>
#include <ac/string.h>
#include <ac/ctype.h>
#include <ac/time.h>
#include <ac/unistd.h>
#include "slap.h"
const struct berval slap_dummy_bv = BER_BVNULL;
int slap_null_cb( Operation *op, SlapReply *rs )
{
return 0;
}
int slap_freeself_cb( Operation *op, SlapReply *rs )
{
assert( op->o_callback != NULL );
op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
op->o_callback = NULL;
return SLAP_CB_CONTINUE;
}
static char *v2ref( BerVarray ref, const char *text )
{
size_t len = 0, i = 0;
char *v2;
if(ref == NULL) {
if (text) {
return ch_strdup(text);
} else {
return NULL;
}
}
if ( text != NULL ) {
len = strlen( text );
if (text[len-1] != '\n') {
i = 1;
}
}
v2 = ch_malloc( len+i+sizeof("Referral:") );
if( text != NULL ) {
strcpy(v2, text);
if( i ) {
v2[len++] = '\n';
}
}
strcpy( v2+len, "Referral:" );
len += sizeof("Referral:");
for( i=0; ref[i].bv_val != NULL; i++ ) {
v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
v2[len-1] = '\n';
AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
len += ref[i].bv_len;
if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
++len;
}
}
v2[len-1] = '\0';
return v2;
}
ber_tag_t
slap_req2res( ber_tag_t tag )
{
switch( tag ) {
case LDAP_REQ_ADD:
case LDAP_REQ_BIND:
case LDAP_REQ_COMPARE:
case LDAP_REQ_EXTENDED:
case LDAP_REQ_MODIFY:
case LDAP_REQ_MODRDN:
tag++;
break;
case LDAP_REQ_DELETE:
tag = LDAP_RES_DELETE;
break;
case LDAP_REQ_ABANDON:
case LDAP_REQ_UNBIND:
tag = LBER_SEQUENCE;
break;
case LDAP_REQ_SEARCH:
tag = LDAP_RES_SEARCH_RESULT;
break;
default:
tag = LBER_SEQUENCE;
}
return tag;
}
/* SlapReply debugging, prodo-slap.h overrides it in OpenLDAP releases */
#if defined(LDAP_TEST) || (defined(USE_RS_ASSERT) && (USE_RS_ASSERT))
int rs_suppress_assert = 0;
/* RS_ASSERT() helper function */
void rs_assert_(const char*file, unsigned line, const char*fn, const char*cond)
{
int no_assert = rs_suppress_assert, save_errno = errno;
const char *s;
if ( no_assert >= 0 ) {
if ( no_assert == 0 && (s = getenv( "NO_RS_ASSERT" )) && *s ) {
no_assert = rs_suppress_assert = atoi( s );
}
if ( no_assert > 0 ) {
errno = save_errno;
return;
}
}
#ifdef rs_assert_ /* proto-slap.h #defined away the fn parameter */
fprintf( stderr,"%s:%u: " "RS_ASSERT(%s) failed.\n", file,line,cond );
#else
fprintf( stderr,"%s:%u: %s: RS_ASSERT(%s) failed.\n", file,line,fn,cond );
#endif
fflush( stderr );
errno = save_errno;
/* $NO_RS_ASSERT > 0: ignore rs_asserts, 0: abort, < 0: just warn */
if ( !no_assert /* from $NO_RS_ASSERT */ ) abort();
}
/* SlapReply is consistent */
void
(rs_assert_ok)( const SlapReply *rs )
{
const slap_mask_t flags = rs->sr_flags;
if ( flags & REP_ENTRY_MASK ) {
RS_ASSERT( !(flags & REP_ENTRY_MUSTRELEASE)
|| !(flags & (REP_ENTRY_MASK ^ REP_ENTRY_MUSTRELEASE)) );
RS_ASSERT( rs->sr_entry != NULL );
RS_ASSERT( (1 << rs->sr_type) &
((1 << REP_SEARCH) | (1 << REP_SEARCHREF) |
(1 << REP_RESULT) | (1 << REP_GLUE_RESULT)) );
}
#if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
if ( (flags & (REP_MATCHED_MASK | REP_REF_MASK | REP_CTRLS_MASK)) ) {
RS_ASSERT( !(flags & REP_MATCHED_MASK) || rs->sr_matched );
RS_ASSERT( !(flags & REP_CTRLS_MASK ) || rs->sr_ctrls );
/* Note: LDAP_REFERRAL + !sr_ref is OK, becomes LDAP_NO_SUCH_OBJECT */
}
#if (USE_RS_ASSERT) > 2
if ( rs->sr_err == LDAP_SUCCESS ) {
RS_ASSERT( rs->sr_text == NULL );
RS_ASSERT( rs->sr_matched == NULL );
}
#endif
#endif
}
/* Ready for calling a new backend operation */
void
(rs_assert_ready)( const SlapReply *rs )
{
RS_ASSERT( !rs->sr_entry );
#if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
RS_ASSERT( !rs->sr_text );
RS_ASSERT( !rs->sr_ref );
RS_ASSERT( !rs->sr_matched );
RS_ASSERT( !rs->sr_ctrls );
RS_ASSERT( !rs->sr_flags );
#if (USE_RS_ASSERT) > 2
RS_ASSERT( rs->sr_err == LDAP_SUCCESS );
#endif
#else
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
#endif
}
/* Backend operation done */
void
(rs_assert_done)( const SlapReply *rs )
{
#if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
RS_ASSERT( !(rs->sr_flags & ~(REP_ENTRY_MODIFIABLE|REP_NO_OPERATIONALS)) );
rs_assert_ok( rs );
#else
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MUSTFLUSH) );
#endif
}
#endif /* LDAP_TEST || USE_RS_ASSERT */
/* Reset a used SlapReply whose contents has been flushed (freed/released) */
void
(rs_reinit)( SlapReply *rs, slap_reply_t type )
{
rs_reinit( rs, type ); /* proto-slap.h macro */
}
/* Obey and clear rs->sr_flags & REP_ENTRY_MASK. Clear sr_entry if freed. */
void
rs_flush_entry( Operation *op, SlapReply *rs, slap_overinst *on )
{
rs_assert_ok( rs );
if ( (rs->sr_flags & REP_ENTRY_MUSTFLUSH) && rs->sr_entry != NULL ) {
if ( !(rs->sr_flags & REP_ENTRY_MUSTRELEASE) ) {
entry_free( rs->sr_entry );
} else if ( on != NULL ) {
overlay_entry_release_ov( op, rs->sr_entry, 0, on );
} else {
be_entry_release_rw( op, rs->sr_entry, 0 );
}
rs->sr_entry = NULL;
}
rs->sr_flags &= ~REP_ENTRY_MASK;
}
/* Set rs->sr_entry after obeying and clearing sr_flags & REP_ENTRY_MASK. */
void
rs_replace_entry( Operation *op, SlapReply *rs, slap_overinst *on, Entry *e )
{
rs_flush_entry( op, rs, on );
rs->sr_entry = e;
}
/*
* Ensure rs->sr_entry is modifiable, by duplicating it if necessary.
* Obey sr_flags. Set REP_ENTRY_<MODIFIABLE, and MUSTBEFREED if duplicated>.
* Return nonzero if rs->sr_entry was replaced.
*/
int
rs_entry2modifiable( Operation *op, SlapReply *rs, slap_overinst *on )
{
if ( rs->sr_flags & REP_ENTRY_MODIFIABLE ) {
rs_assert_ok( rs );
return 0;
}
rs_replace_entry( op, rs, on, entry_dup( rs->sr_entry ));
rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
return 1;
}
static long send_ldap_ber(
Operation *op,
BerElement *ber )
{
Connection *conn = op->o_conn;
ber_len_t bytes;
long ret = 0;
char *close_reason;
ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
/* write only one pdu at a time - wait til it's our turn */
ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
if (( op->o_abandon && !op->o_cancel ) || !connection_valid( conn ) ||
conn->c_writers < 0 ) {
ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
return 0;
}
conn->c_writers++;
while ( conn->c_writers > 0 && conn->c_writing ) {
ldap_pvt_thread_pool_idle( &connection_pool );
ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
ldap_pvt_thread_pool_unidle( &connection_pool );
}
/* connection was closed under us */
if ( conn->c_writers < 0 ) {
/* we're the last waiter, let the closer continue */
if ( conn->c_writers == -1 )
ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
conn->c_writers++;
ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
return 0;
}
/* Our turn */
conn->c_writing = 1;
/* write the pdu */
while( 1 ) {
int err;
if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
ret = bytes;
break;
}
err = sock_errno();
/*
* we got an error. if it's ewouldblock, we need to
* wait on the socket being writable. otherwise, figure
* it's a hard error and return.
*/
Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
err, sock_errstr(err), 0 );
if ( err != EWOULDBLOCK && err != EAGAIN ) {
close_reason = "connection lost on write";
fail:
conn->c_writers--;
conn->c_writing = 0;
ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
connection_closing( conn, close_reason );
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
return -1;
}
/* wait for socket to be write-ready */
conn->c_writewaiter = 1;
ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
ldap_pvt_thread_pool_idle( &connection_pool );
err = slapd_wait_writer( conn->c_sd );
conn->c_writewaiter = 0;
ldap_pvt_thread_pool_unidle( &connection_pool );
ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
/* 0 is timeout, so we close it.
* -1 is an error, close it.
*/
if ( err <= 0 ) {
if ( err == 0 )
close_reason = "writetimeout";
else
close_reason = "connection lost on writewait";
goto fail;
}
if ( conn->c_writers < 0 ) {
ret = 0;
break;
}
}
conn->c_writing = 0;
if ( conn->c_writers < 0 ) {
conn->c_writers++;
if ( !conn->c_writers )
ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
} else {
conn->c_writers--;
ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
}
ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
return ret;
}
static int
send_ldap_control( BerElement *ber, LDAPControl *c )
{
int rc;
assert( c != NULL );
rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
if( c->ldctl_iscritical ) {
rc = ber_printf( ber, "b",
(ber_int_t) c->ldctl_iscritical ) ;
if( rc == -1 ) return rc;
}
if( c->ldctl_value.bv_val != NULL ) {
rc = ber_printf( ber, "O", &c->ldctl_value );
if( rc == -1 ) return rc;
}
rc = ber_printf( ber, /*{*/"N}" );
if( rc == -1 ) return rc;
return 0;
}
static int
send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
{
int rc;
if( c == NULL )
return 0;
rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
if( rc == -1 ) return rc;
for( ; *c != NULL; c++) {
rc = send_ldap_control( ber, *c );
if( rc == -1 ) return rc;
}
#ifdef SLAP_CONTROL_X_SORTEDRESULTS
/* this is a hack to avoid having to modify op->s_ctrls */
if( o->o_sortedresults ) {
BerElementBuffer berbuf;
BerElement *sber = (BerElement *) &berbuf;
LDAPControl sorted;
BER_BVZERO( &sorted.ldctl_value );
sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
sorted.ldctl_iscritical = 0;
ber_init2( sber, NULL, LBER_USE_DER );
ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
if( ber_flatten2( sber, &sorted.ldctl_value, 0 ) == -1 ) {
return -1;
}
(void) ber_free_buf( sber );
rc = send_ldap_control( ber, &sorted );
if( rc == -1 ) return rc;
}
#endif
rc = ber_printf( ber, /*{*/"N}" );
return rc;
}
/*
* slap_response_play()
*
* plays the callback list; rationale: a callback can
* - remove itself from the list, by setting op->o_callback = NULL;
* malloc()'ed callbacks should free themselves from inside the
* sc_response() function.
* - replace itself with another (list of) callback(s), by setting
* op->o_callback = a new (list of) callback(s); in this case, it
* is the callback's responsibility to to append existing subsequent
* callbacks to the end of the list that is passed to the sc_response()
* function.
* - modify the list of subsequent callbacks by modifying the value
* of the sc_next field from inside the sc_response() function; this
* case does not require any handling from inside slap_response_play()
*
* To stop execution of the playlist, the sc_response() function must return
* a value different from SLAP_SC_CONTINUE.
*
* The same applies to slap_cleanup_play(); only, there is no means to stop
* execution of the playlist, since all cleanup functions must be called.
*/
static int
slap_response_play(
Operation *op,
SlapReply *rs )
{
int rc;
slap_callback *sc = op->o_callback, **scp;
rc = SLAP_CB_CONTINUE;
for ( scp = &sc; *scp; ) {
slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
op->o_callback = *scp;
if ( op->o_callback->sc_response ) {
rc = op->o_callback->sc_response( op, rs );
if ( op->o_callback == NULL ) {
/* the callback has been removed;
* repair the list */
*scp = sc_next;
sc_nextp = scp;
} else if ( op->o_callback != *scp ) {
/* a new callback has been inserted
* in place of the existing one; repair the list */
*scp = op->o_callback;
sc_nextp = scp;
}
if ( rc != SLAP_CB_CONTINUE ) break;
}
scp = sc_nextp;
}
op->o_callback = sc;
return rc;
}
static int
slap_cleanup_play(
Operation *op,
SlapReply *rs )
{
slap_callback *sc = op->o_callback, **scp;
for ( scp = &sc; *scp; ) {
slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
op->o_callback = *scp;
if ( op->o_callback->sc_cleanup ) {
(void)op->o_callback->sc_cleanup( op, rs );
if ( op->o_callback == NULL ) {
/* the callback has been removed;
* repair the list */
*scp = sc_next;
sc_nextp = scp;
} else if ( op->o_callback != *scp ) {
/* a new callback has been inserted
* after the existing one; repair the list */
/* a new callback has been inserted
* in place of the existing one; repair the list */
*scp = op->o_callback;
sc_nextp = scp;
}
/* don't care about the result; do all cleanup */
}
scp = sc_nextp;
}
op->o_callback = sc;
return LDAP_SUCCESS;
}
static int
send_ldap_response(
Operation *op,
SlapReply *rs )
{
BerElementBuffer berbuf;
BerElement *ber = (BerElement *) &berbuf;
int rc = LDAP_SUCCESS;
long bytes;
/* op was actually aborted, bypass everything if client didn't Cancel */
if (( rs->sr_err == SLAPD_ABANDON ) && !op->o_cancel ) {
rc = SLAPD_ABANDON;
goto clean2;
}
if ( op->o_callback ) {
rc = slap_response_play( op, rs );
if ( rc != SLAP_CB_CONTINUE ) {
goto clean2;
}
}
/* op completed, connection aborted, bypass sending response */
if ( op->o_abandon && !op->o_cancel ) {
rc = SLAPD_ABANDON;
goto clean2;
}
#ifdef LDAP_CONNECTIONLESS
if (op->o_conn && op->o_conn->c_is_udp)
ber = op->o_res_ber;
else
#endif
{
ber_init_w_nullc( ber, LBER_USE_DER );
ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
}
rc = rs->sr_err;
if ( rc == SLAPD_ABANDON && op->o_cancel )
rc = LDAP_CANCELLED;
Debug( LDAP_DEBUG_TRACE,
"send_ldap_response: msgid=%d tag=%lu err=%d\n",
rs->sr_msgid, rs->sr_tag, rc );
if( rs->sr_ref ) {
Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
NULL, NULL );
}
#ifdef LDAP_CONNECTIONLESS
if (op->o_conn && op->o_conn->c_is_udp &&
op->o_protocol == LDAP_VERSION2 )
{
rc = ber_printf( ber, "t{ess" /*"}"*/,
rs->sr_tag, rc,
rs->sr_matched == NULL ? "" : rs->sr_matched,
rs->sr_text == NULL ? "" : rs->sr_text );
} else
#endif
if ( rs->sr_type == REP_INTERMEDIATE ) {
rc = ber_printf( ber, "{it{" /*"}}"*/,
rs->sr_msgid, rs->sr_tag );
} else {
rc = ber_printf( ber, "{it{ess" /*"}}"*/,
rs->sr_msgid, rs->sr_tag, rc,
rs->sr_matched == NULL ? "" : rs->sr_matched,
rs->sr_text == NULL ? "" : rs->sr_text );
}
if( rc != -1 ) {
if ( rs->sr_ref != NULL ) {
assert( rs->sr_err == LDAP_REFERRAL );
rc = ber_printf( ber, "t{W}",
LDAP_TAG_REFERRAL, rs->sr_ref );
} else {
assert( rs->sr_err != LDAP_REFERRAL );
}
}
if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
rc = ber_printf( ber, "tO",
LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
}
if( rc != -1 &&
( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
{
if ( rs->sr_rspoid != NULL ) {
rc = ber_printf( ber, "ts",
rs->sr_type == REP_EXTENDED
? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
rs->sr_rspoid );
}
if( rc != -1 && rs->sr_rspdata != NULL ) {
rc = ber_printf( ber, "tO",
rs->sr_type == REP_EXTENDED
? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
rs->sr_rspdata );
}
}
if( rc != -1 ) {
rc = ber_printf( ber, /*"{"*/ "N}" );
}
if( rc != -1 ) {
rc = send_ldap_controls( op, ber, rs->sr_ctrls );
}
if( rc != -1 ) {
rc = ber_printf( ber, /*"{"*/ "N}" );
}
#ifdef LDAP_CONNECTIONLESS
if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
&& rc != -1 )
{
rc = ber_printf( ber, /*"{"*/ "N}" );
}
#endif
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
#ifdef LDAP_CONNECTIONLESS
if (!op->o_conn || op->o_conn->c_is_udp == 0)
#endif
{
ber_free_buf( ber );
}
goto cleanup;
}
/* send BER */
bytes = send_ldap_ber( op, ber );
#ifdef LDAP_CONNECTIONLESS
if (!op->o_conn || op->o_conn->c_is_udp == 0)
#endif
{
ber_free_buf( ber );
}
if ( bytes < 0 ) {
Debug( LDAP_DEBUG_ANY,
"send_ldap_response: ber write failed\n",
0, 0, 0 );
goto cleanup;
}
ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
cleanup:;
/* Tell caller that we did this for real, as opposed to being
* overridden by a callback
*/
rc = SLAP_CB_CONTINUE;
clean2:;
if ( op->o_callback ) {
(void)slap_cleanup_play( op, rs );
}
if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
if ( rs->sr_matched ) {
free( (char *)rs->sr_matched );
rs->sr_matched = NULL;
}
}
if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
if ( rs->sr_ref ) {
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
}
}
if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
if ( rs->sr_ctrls ) {
slap_free_ctrls( op, rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
}
return rc;
}
void
send_ldap_disconnect( Operation *op, SlapReply *rs )
{
#define LDAP_UNSOLICITED_ERROR(e) \
( (e) == LDAP_PROTOCOL_ERROR \
|| (e) == LDAP_STRONG_AUTH_REQUIRED \
|| (e) == LDAP_UNAVAILABLE )
Debug( LDAP_DEBUG_TRACE,
"send_ldap_disconnect %d:%s\n",
rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
/* TODO: Flush the entry if sr_type == REP_SEARCH/REP_SEARCHREF? */
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */
rs->sr_type = REP_EXTENDED;
rs->sr_rspdata = NULL;
if ( op->o_protocol < LDAP_VERSION3 ) {
rs->sr_rspoid = NULL;
rs->sr_tag = slap_req2res( op->o_tag );
rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
} else {
rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
rs->sr_tag = LDAP_RES_EXTENDED;
rs->sr_msgid = LDAP_RES_UNSOLICITED;
}
if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
Statslog( LDAP_DEBUG_STATS,
"%s DISCONNECT tag=%lu err=%d text=%s\n",
op->o_log_prefix, rs->sr_tag, rs->sr_err,
rs->sr_text ? rs->sr_text : "", 0 );
}
}
void
slap_send_ldap_result( Operation *op, SlapReply *rs )
{
char *tmp = NULL;
const char *otext = rs->sr_text;
BerVarray oref = rs->sr_ref;
rs->sr_type = REP_RESULT;
/* Propagate Abandons so that cleanup callbacks can be processed */
if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
goto abandon;
Debug( LDAP_DEBUG_TRACE,
"send_ldap_result: %s p=%d\n",
op->o_log_prefix, op->o_protocol, 0 );
Debug( LDAP_DEBUG_ARGS,
"send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
rs->sr_text ? rs->sr_text : "" );
if( rs->sr_ref ) {
Debug( LDAP_DEBUG_ARGS,
"send_ldap_result: referral=\"%s\"\n",
rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
NULL, NULL );
}
assert( !LDAP_API_ERROR( rs->sr_err ) );
assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
if ( rs->sr_err == LDAP_REFERRAL ) {
if( op->o_domain_scope ) rs->sr_ref = NULL;
if( rs->sr_ref == NULL ) {
rs->sr_err = LDAP_NO_SUCH_OBJECT;
} else if ( op->o_protocol < LDAP_VERSION3 ) {
rs->sr_err = LDAP_PARTIAL_RESULTS;
}
}
if ( op->o_protocol < LDAP_VERSION3 ) {
tmp = v2ref( rs->sr_ref, rs->sr_text );
rs->sr_text = tmp;
rs->sr_ref = NULL;
}
abandon:
rs->sr_tag = slap_req2res( op->o_tag );
rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
if ( rs->sr_ref == NULL ) {
rs->sr_flags ^= REP_REF_MUSTBEFREED;
ber_bvarray_free( oref );
}
oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
}
if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
if ( op->o_tag == LDAP_REQ_SEARCH ) {
Statslog( LDAP_DEBUG_STATS,
"%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
op->o_log_prefix, rs->sr_tag, rs->sr_err,
rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
} else {
Statslog( LDAP_DEBUG_STATS,
"%s RESULT tag=%lu err=%d text=%s\n",
op->o_log_prefix, rs->sr_tag, rs->sr_err,
rs->sr_text ? rs->sr_text : "", 0 );
}
}
if( tmp != NULL ) ch_free(tmp);
rs->sr_text = otext;
rs->sr_ref = oref;
}
void
send_ldap_sasl( Operation *op, SlapReply *rs )
{
Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
rs->sr_err,
rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */
rs->sr_type = REP_SASL;
rs->sr_tag = slap_req2res( op->o_tag );
rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
Statslog( LDAP_DEBUG_STATS,
"%s RESULT tag=%lu err=%d text=%s\n",
op->o_log_prefix, rs->sr_tag, rs->sr_err,
rs->sr_text ? rs->sr_text : "", 0 );
}
}
void
slap_send_ldap_extended( Operation *op, SlapReply *rs )
{
Debug( LDAP_DEBUG_TRACE,
"send_ldap_extended: err=%d oid=%s len=%ld\n",
rs->sr_err,
rs->sr_rspoid ? rs->sr_rspoid : "",
rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */
rs->sr_type = REP_EXTENDED;
rs->sr_tag = slap_req2res( op->o_tag );
rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
Statslog( LDAP_DEBUG_STATS,
"%s RESULT oid=%s err=%d text=%s\n",
op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
}
}
void
slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
{
Debug( LDAP_DEBUG_TRACE,
"send_ldap_intermediate: err=%d oid=%s len=%ld\n",
rs->sr_err,
rs->sr_rspoid ? rs->sr_rspoid : "",
rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia */
rs->sr_type = REP_INTERMEDIATE;
rs->sr_tag = LDAP_RES_INTERMEDIATE;
rs->sr_msgid = op->o_msgid;
if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
Statslog( LDAP_DEBUG_STATS2,
"%s INTERM oid=%s\n",
op->o_log_prefix,
rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
}
}
#define set_ldap_error( rs, err, text ) do { \
(rs)->sr_err = err; (rs)->sr_text = text; } while(0)
/*
* returns:
*
* LDAP_SUCCESS entry sent
* LDAP_OTHER entry not sent (other)
* LDAP_INSUFFICIENT_ACCESS entry not sent (ACL)
* LDAP_UNAVAILABLE entry not sent (connection closed)
* LDAP_SIZELIMIT_EXCEEDED entry not sent (caller must send sizelimitExceeded)
*/
int
slap_send_search_entry( Operation *op, SlapReply *rs )
{
BerElementBuffer berbuf;
BerElement *ber = (BerElement *) &berbuf;
Attribute *a;
int i, j, rc = LDAP_UNAVAILABLE, bytes;
int userattrs;
AccessControlState acl_state = ACL_STATE_INIT;
int attrsonly;
AttributeDescription *ad_entry = slap_schema.si_ad_entry;
/* a_flags: array of flags telling if the i-th element will be
* returned or filtered out
* e_flags: array of a_flags
*/
char **e_flags = NULL;
rs->sr_type = REP_SEARCH;
if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
rc = LDAP_SIZELIMIT_EXCEEDED;
goto error_return;
}
/* Every 64 entries, check for thread pool pause */
if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
{
rc = LDAP_BUSY;
goto error_return;
}
/* eventually will loop through generated operational attribute types
* currently implemented types include:
* entryDN, subschemaSubentry, and hasSubordinates */
/* NOTE: moved before overlays callback circling because
* they may modify entry and other stuff in rs */
/* check for special all operational attributes ("+") type */
/* FIXME: maybe we could set this flag at the operation level;
* however, in principle the caller of send_search_entry() may
* change the attribute list at each call */
rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
rc = backend_operational( op, rs );
if ( rc ) {
goto error_return;
}
if ( op->o_callback ) {
rc = slap_response_play( op, rs );
if ( rc != SLAP_CB_CONTINUE ) {
goto error_return;
}
}
Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
op->o_connid, rs->sr_entry->e_name.bv_val,
op->ors_attrsonly ? " (attrsOnly)" : "" );
attrsonly = op->ors_attrsonly;
if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
Debug( LDAP_DEBUG_ACL,
"send_search_entry: conn %lu access to entry (%s) not allowed\n",
op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
rc = LDAP_INSUFFICIENT_ACCESS;
goto error_return;
}
if ( op->o_res_ber ) {
/* read back control or LDAP_CONNECTIONLESS */
ber = op->o_res_ber;
} else {
struct berval bv;
bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
ber_init2( ber, &bv, LBER_USE_DER );
ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
}
#ifdef LDAP_CONNECTIONLESS
if ( op->o_conn && op->o_conn->c_is_udp ) {
/* CONNECTIONLESS */
if ( op->o_protocol == LDAP_VERSION2 ) {
rc = ber_printf(ber, "t{O{" /*}}*/,
LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
} else {
rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
}
} else
#endif
if ( op->o_res_ber ) {
/* read back control */
rc = ber_printf( ber, "t{O{" /*}}*/,
LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
} else {
rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
}
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber_printf failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER, "encoding DN error" );
rc = rs->sr_err;
goto error_return;
}
/* check for special all user attributes ("*") type */
userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
/* create an array of arrays of flags. Each flag corresponds
* to particular value of attribute and equals 1 if value matches
* to ValuesReturnFilter or 0 if not
*/
if ( op->o_vrFilter != NULL ) {
int k = 0;
size_t size;
for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
}
size = i * sizeof(char *) + k;
if ( size > 0 ) {
char *a_flags;
e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
if( e_flags == NULL ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu slap_sl_calloc failed\n",
op->o_connid, 0, 0 );
ber_free( ber, 1 );
set_ldap_error( rs, LDAP_OTHER, "out of memory" );
goto error_return;
}
a_flags = (char *)(e_flags + i);
memset( a_flags, 0, k );
for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
e_flags[i] = a_flags;
a_flags += j;
}
rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY, "send_search_entry: "
"conn %lu matched values filtering failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"matched values filtering error" );
rc = rs->sr_err;
goto error_return;
}
}
}
for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
AttributeDescription *desc = a->a_desc;
int finish = 0;
if ( rs->sr_attrs == NULL ) {
/* all user attrs request, skip operational attributes */
if( is_at_operational( desc->ad_type ) ) {
continue;
}
} else {
/* specific attrs requested */
if ( is_at_operational( desc->ad_type ) ) {
/* if not explicitly requested */
if ( !ad_inlist( desc, rs->sr_attrs )) {
/* if not all op attrs requested, skip */
if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
continue;
/* if DSA-specific and replicating, skip */
if ( op->o_sync != SLAP_CONTROL_NONE &&
desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
continue;
}
} else {
if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
continue;
}
}
}
if ( attrsonly ) {
if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
ACL_READ, &acl_state ) )
{
Debug( LDAP_DEBUG_ACL, "send_search_entry: "
"conn %lu access to attribute %s not allowed\n",
op->o_connid, desc->ad_cname.bv_val, 0 );
continue;
}
if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber_printf failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"encoding description error");
rc = rs->sr_err;
goto error_return;
}
finish = 1;
} else {
int first = 1;
for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
if ( ! access_allowed( op, rs->sr_entry,
desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
{
Debug( LDAP_DEBUG_ACL,
"send_search_entry: conn %lu "
"access to attribute %s, value #%d not allowed\n",
op->o_connid, desc->ad_cname.bv_val, i );
continue;
}
if ( op->o_vrFilter && e_flags[j][i] == 0 ){
continue;
}
if ( first ) {
first = 0;
finish = 1;
if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber_printf failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"encoding description error");
rc = rs->sr_err;
goto error_return;
}
}
if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu "
"ber_printf failed.\n", op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"encoding values error" );
rc = rs->sr_err;
goto error_return;
}
}
}
if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber_printf failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER, "encode end error" );
rc = rs->sr_err;
goto error_return;
}
}
/* NOTE: moved before overlays callback circling because
* they may modify entry and other stuff in rs */
if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
int k = 0;
size_t size;
for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
}
size = i * sizeof(char *) + k;
if ( size > 0 ) {
char *a_flags, **tmp;
/*
* Reuse previous memory - we likely need less space
* for operational attributes
*/
tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
op->o_tmpmemctx );
if ( tmp == NULL ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu "
"not enough memory "
"for matched values filtering\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"not enough memory for matched values filtering" );
goto error_return;
}
e_flags = tmp;
a_flags = (char *)(e_flags + i);
memset( a_flags, 0, k );
for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
e_flags[i] = a_flags;
a_flags += j;
}
rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu "
"matched values filtering failed\n",
op->o_connid, 0, 0);
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"matched values filtering error" );
rc = rs->sr_err;
goto error_return;
}
}
}
for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
AttributeDescription *desc = a->a_desc;
if ( rs->sr_attrs == NULL ) {
/* all user attrs request, skip operational attributes */
if( is_at_operational( desc->ad_type ) ) {
continue;
}
} else {
/* specific attrs requested */
if( is_at_operational( desc->ad_type ) ) {
if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
!ad_inlist( desc, rs->sr_attrs ) )
{
continue;
}
/* if DSA-specific and replicating, skip */
if ( op->o_sync != SLAP_CONTROL_NONE &&
desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
continue;
} else {
if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
continue;
}
}
}
if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
ACL_READ, &acl_state ) )
{
Debug( LDAP_DEBUG_ACL,
"send_search_entry: conn %lu "
"access to attribute %s not allowed\n",
op->o_connid, desc->ad_cname.bv_val, 0 );
continue;
}
rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu "
"ber_printf failed\n", op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"encoding description error" );
rc = rs->sr_err;
goto error_return;
}
if ( ! attrsonly ) {
for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
if ( ! access_allowed( op, rs->sr_entry,
desc, &a->a_vals[i], ACL_READ, &acl_state ) )
{
Debug( LDAP_DEBUG_ACL,
"send_search_entry: conn %lu "
"access to %s, value %d not allowed\n",
op->o_connid, desc->ad_cname.bv_val, i );
continue;
}
if ( op->o_vrFilter && e_flags[j][i] == 0 ){
continue;
}
if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber_printf failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER,
"encoding values error" );
rc = rs->sr_err;
goto error_return;
}
}
}
if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber_printf failed\n",
op->o_connid, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER, "encode end error" );
rc = rs->sr_err;
goto error_return;
}
}
/* free e_flags */
if ( e_flags ) {
slap_sl_free( e_flags, op->o_tmpmemctx );
e_flags = NULL;
}
rc = ber_printf( ber, /*{{*/ "}N}" );
if( rc != -1 ) {
rc = send_ldap_controls( op, ber, rs->sr_ctrls );
}
if( rc != -1 ) {
#ifdef LDAP_CONNECTIONLESS
if( op->o_conn && op->o_conn->c_is_udp ) {
if ( op->o_protocol != LDAP_VERSION2 ) {
rc = ber_printf( ber, /*{*/ "N}" );
}
} else
#endif
if ( op->o_res_ber == NULL ) {
rc = ber_printf( ber, /*{*/ "N}" );
}
}
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
if ( op->o_res_ber == NULL ) ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER, "encode entry end error" );
rc = rs->sr_err;
goto error_return;
}
Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
rs_flush_entry( op, rs, NULL );
if ( op->o_res_ber == NULL ) {
bytes = send_ldap_ber( op, ber );
ber_free_buf( ber );
if ( bytes < 0 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_entry: conn %lu ber write failed.\n",
op->o_connid, 0, 0 );
rc = LDAP_UNAVAILABLE;
goto error_return;
}
rs->sr_nentries++;
ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
}
Debug( LDAP_DEBUG_TRACE,
"<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
rc = LDAP_SUCCESS;
error_return:;
if ( op->o_callback ) {
(void)slap_cleanup_play( op, rs );
}
if ( e_flags ) {
slap_sl_free( e_flags, op->o_tmpmemctx );
}
/* FIXME: Can break if rs now contains an extended response */
if ( rs->sr_operational_attrs ) {
attrs_free( rs->sr_operational_attrs );
rs->sr_operational_attrs = NULL;
}
rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
rs_flush_entry( op, rs, NULL );
} else {
RS_ASSERT( (rs->sr_flags & REP_ENTRY_MASK) == 0 );
}
if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
if ( rs->sr_ctrls ) {
slap_free_ctrls( op, rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
}
return( rc );
}
int
slap_send_search_reference( Operation *op, SlapReply *rs )
{
BerElementBuffer berbuf;
BerElement *ber = (BerElement *) &berbuf;
int rc = 0;
int bytes;
char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
AttributeDescription *ad_ref = slap_schema.si_ad_ref;
AttributeDescription *ad_entry = slap_schema.si_ad_entry;
rs->sr_type = REP_SEARCHREF;
if ( op->o_callback ) {
rc = slap_response_play( op, rs );
if ( rc != SLAP_CB_CONTINUE ) {
goto rel;
}
}
Debug( LDAP_DEBUG_TRACE,
"=> send_search_reference: dn=\"%s\"\n",
edn, 0, 0 );
if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
ad_entry, NULL, ACL_READ, NULL ) )
{
Debug( LDAP_DEBUG_ACL,
"send_search_reference: access to entry not allowed\n",
0, 0, 0 );
rc = 1;
goto rel;
}
if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
ad_ref, NULL, ACL_READ, NULL ) )
{
Debug( LDAP_DEBUG_ACL,
"send_search_reference: access "
"to reference not allowed\n",
0, 0, 0 );
rc = 1;
goto rel;
}
if( op->o_domain_scope ) {
Debug( LDAP_DEBUG_ANY,
"send_search_reference: domainScope control in (%s)\n",
edn, 0, 0 );
rc = 0;
goto rel;
}
if( rs->sr_ref == NULL ) {
Debug( LDAP_DEBUG_ANY,
"send_search_reference: null ref in (%s)\n",
edn, 0, 0 );
rc = 1;
goto rel;
}
if( op->o_protocol < LDAP_VERSION3 ) {
rc = 0;
/* save the references for the result */
if( rs->sr_ref[0].bv_val != NULL ) {
if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
rc = LDAP_OTHER;
}
goto rel;
}
#ifdef LDAP_CONNECTIONLESS
if( op->o_conn && op->o_conn->c_is_udp ) {
ber = op->o_res_ber;
} else
#endif
{
ber_init_w_nullc( ber, LBER_USE_DER );
ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
}
rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
if( rc != -1 ) {
rc = send_ldap_controls( op, ber, rs->sr_ctrls );
}
if( rc != -1 ) {
rc = ber_printf( ber, /*"{"*/ "N}" );
}
if ( rc == -1 ) {
Debug( LDAP_DEBUG_ANY,
"send_search_reference: ber_printf failed\n", 0, 0, 0 );
#ifdef LDAP_CONNECTIONLESS
if (!op->o_conn || op->o_conn->c_is_udp == 0)
#endif
ber_free_buf( ber );
set_ldap_error( rs, LDAP_OTHER, "encode DN error" );
goto rel;
}
rc = 0;
rs_flush_entry( op, rs, NULL );
#ifdef LDAP_CONNECTIONLESS
if (!op->o_conn || op->o_conn->c_is_udp == 0) {
#endif
bytes = send_ldap_ber( op, ber );
ber_free_buf( ber );
if ( bytes < 0 ) {
rc = LDAP_UNAVAILABLE;
} else {
ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
}
#ifdef LDAP_CONNECTIONLESS
}
#endif
if ( rs->sr_ref != NULL ) {
int r;
for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
op->o_log_prefix, r, rs->sr_ref[0].bv_val,
0, 0 );
}
} else {
Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
op->o_log_prefix, 0, 0, 0, 0 );
}
Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
if ( 0 ) {
rel:
rs_flush_entry( op, rs, NULL );
}
if ( op->o_callback ) {
(void)slap_cleanup_play( op, rs );
}
if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
if ( rs->sr_ctrls ) {
slap_free_ctrls( op, rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
}
return rc;
}
int
str2result(
char *s,
int *code,
char **matched,
char **info )
{
int rc;
char *c;
*code = LDAP_SUCCESS;
*matched = NULL;
*info = NULL;
if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
s, 0, 0 );
return( -1 );
}
rc = 0;
while ( (s = strchr( s, '\n' )) != NULL ) {
*s++ = '\0';
if ( *s == '\0' ) {
break;
}
if ( (c = strchr( s, ':' )) != NULL ) {
c++;
}
if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
char *next = NULL;
long retcode;
if ( c == NULL ) {
Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
s, 0, 0 );
rc = -1;
continue;
}
while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
if ( c[ 0 ] == '\0' ) {
Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
s, 0, 0 );
rc = -1;
continue;
}
retcode = strtol( c, &next, 10 );
if ( next == NULL || next == c ) {
Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
s, 0, 0 );
rc = -1;
continue;
}
while ( isspace( (unsigned char) next[ 0 ] ) && next[ 0 ] != '\n' )
next++;
if ( next[ 0 ] != '\0' && next[ 0 ] != '\n' ) {
Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
s, 0, 0 );
rc = -1;
continue;
}
/* FIXME: what if it's larger than max int? */
*code = (int)retcode;
} else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
if ( c != NULL ) {
*matched = c;
}
} else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
if ( c != NULL ) {
*info = c;
}
} else {
Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
s, 0, 0 );
rc = -1;
}
}
return( rc );
}
int slap_read_controls(
Operation *op,
SlapReply *rs,
Entry *e,
const struct berval *oid,
LDAPControl **ctrl )
{
int rc;
struct berval bv;
BerElementBuffer berbuf;
BerElement *ber = (BerElement *) &berbuf;
LDAPControl c;
Operation myop;
Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
op->o_log_prefix, oid->bv_val, e->e_dn );
rs->sr_entry = e;
rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
op->o_preread_attrs : op->o_postread_attrs;
bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
ber_init2( ber, &bv, LBER_USE_DER );
ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
/* create new operation */
myop = *op;
/* FIXME: o_bd needed for ACL */
myop.o_bd = op->o_bd;
myop.o_res_ber = ber;
myop.o_callback = NULL;
myop.ors_slimit = 1;
myop.ors_attrsonly = 0;
rc = slap_send_search_entry( &myop, rs );
if( rc ) return rc;
rc = ber_flatten2( ber, &c.ldctl_value, 0 );
if( rc == -1 ) return LDAP_OTHER;
c.ldctl_oid = oid->bv_val;
c.ldctl_iscritical = 0;
if ( *ctrl == NULL ) {
/* first try */
*ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
} else {
/* retry: free previous try */
slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
}
**ctrl = c;
return LDAP_SUCCESS;
}
/* Map API errors to protocol errors... */
int
slap_map_api2result( SlapReply *rs )
{
switch(rs->sr_err) {
case LDAP_SERVER_DOWN:
return LDAP_UNAVAILABLE;
case LDAP_LOCAL_ERROR:
return LDAP_OTHER;
case LDAP_ENCODING_ERROR:
case LDAP_DECODING_ERROR:
return LDAP_PROTOCOL_ERROR;
case LDAP_TIMEOUT:
return LDAP_UNAVAILABLE;
case LDAP_AUTH_UNKNOWN:
return LDAP_AUTH_METHOD_NOT_SUPPORTED;
case LDAP_FILTER_ERROR:
rs->sr_text = "Filter error";
return LDAP_OTHER;
case LDAP_USER_CANCELLED:
rs->sr_text = "User cancelled";
return LDAP_OTHER;
case LDAP_PARAM_ERROR:
return LDAP_PROTOCOL_ERROR;
case LDAP_NO_MEMORY:
return LDAP_OTHER;
case LDAP_CONNECT_ERROR:
return LDAP_UNAVAILABLE;
case LDAP_NOT_SUPPORTED:
return LDAP_UNWILLING_TO_PERFORM;
case LDAP_CONTROL_NOT_FOUND:
return LDAP_PROTOCOL_ERROR;
case LDAP_NO_RESULTS_RETURNED:
return LDAP_NO_SUCH_OBJECT;
case LDAP_MORE_RESULTS_TO_RETURN:
rs->sr_text = "More results to return";
return LDAP_OTHER;
case LDAP_CLIENT_LOOP:
case LDAP_REFERRAL_LIMIT_EXCEEDED:
return LDAP_LOOP_DETECT;
default:
if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
return rs->sr_err;
}
}
slap_mask_t
slap_attr_flags( AttributeName *an )
{
slap_mask_t flags = SLAP_ATTRS_UNDEFINED;
if ( an == NULL ) {
flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
} else {
flags |= an_find( an, slap_bv_all_operational_attrs )
? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
flags |= an_find( an, slap_bv_all_user_attrs )
? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
}
return flags;
}
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