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openldap/servers/slapd/back-asyncmeta/bind.c
Quanah Gibson-Mount 59e9ff6243 Happy New Year
2018-03-22 15:35:24 +00:00

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/* bind.c - bind request handler functions for binding
* to remote targets for back-asyncmeta */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2016-2018 The OpenLDAP Foundation.
* Portions Copyright 2016 Symas Corporation.
* 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>.
*/
/* ACKNOWLEDGEMENTS:
* This work was developed by Symas Corporation
* based on back-meta module for inclusion in OpenLDAP Software.
* This work was sponsored by Ericsson. */
#include "portable.h"
#include <stdio.h>
#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
#define AVL_INTERNAL
#include "slap.h"
#include "../back-ldap/back-ldap.h"
#include "back-asyncmeta.h"
#include "lutil_ldap.h"
static int
asyncmeta_proxy_authz_bind(
a_metaconn_t *mc,
int candidate,
Operation *op,
SlapReply *rs,
ldap_back_send_t sendok,
int dolock );
static int
asyncmeta_single_bind(
Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
int candidate );
int
asyncmeta_back_bind( Operation *op, SlapReply *rs )
{
a_metainfo_t *mi = ( a_metainfo_t * )op->o_bd->be_private;
a_metaconn_t *mc = NULL;
int rc = LDAP_OTHER,
i,
gotit = 0,
isroot = 0;
SlapReply *candidates;
candidates = op->o_tmpcalloc(mi->mi_ntargets, sizeof(SlapReply),op->o_tmpmemctx);
rs->sr_err = LDAP_SUCCESS;
Debug( LDAP_DEBUG_ARGS, "%s asyncmeta_back_bind: dn=\"%s\".\n",
op->o_log_prefix, op->o_req_dn.bv_val, 0 );
/* the test on the bind method should be superfluous */
switch ( be_rootdn_bind( op, rs ) ) {
case LDAP_SUCCESS:
if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
/* frontend will return success */
return rs->sr_err;
}
isroot = 1;
/* fallthru */
case SLAP_CB_CONTINUE:
break;
default:
/* be_rootdn_bind() sent result */
return rs->sr_err;
}
/* we need asyncmeta_getconn() not send result even on error,
* because we want to intercept the error and make it
* invalidCredentials */
mc = asyncmeta_getconn( op, rs, candidates, NULL, LDAP_BACK_BIND_DONTSEND, 1 );
if ( !mc ) {
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ),
"asyncmeta_back_bind: no target "
"for dn \"%s\" (%d%s%s).",
op->o_req_dn.bv_val, rs->sr_err,
rs->sr_text ? ". " : "",
rs->sr_text ? rs->sr_text : "" );
Debug( LDAP_DEBUG_ANY,
"%s %s\n",
op->o_log_prefix, buf, 0 );
}
/* FIXME: there might be cases where we don't want
* to map the error onto invalidCredentials */
switch ( rs->sr_err ) {
case LDAP_NO_SUCH_OBJECT:
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_INVALID_CREDENTIALS;
rs->sr_text = NULL;
break;
}
send_ldap_result( op, rs );
return rs->sr_err;
}
/*
* Each target is scanned ...
*/
mc->mc_authz_target = META_BOUND_NONE;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
a_metatarget_t *mt = mi->mi_targets[ i ];
int lerr;
/*
* Skip non-candidates
*/
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
if ( gotit == 0 ) {
/* set rc to LDAP_SUCCESS only if at least
* one candidate has been tried */
rc = LDAP_SUCCESS;
gotit = 1;
} else if ( !isroot ) {
/*
* A bind operation is expected to have
* ONE CANDIDATE ONLY!
*/
Debug( LDAP_DEBUG_ANY,
"### %s asyncmeta_back_bind: more than one"
" candidate selected...\n",
op->o_log_prefix, 0, 0 );
}
if ( isroot ) {
if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE
|| BER_BVISNULL( &mt->mt_idassert_authcDN ) )
{
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
continue;
}
(void)asyncmeta_proxy_authz_bind( mc, i, op, rs, LDAP_BACK_DONTSEND, 1 );
lerr = rs->sr_err;
} else {
lerr = asyncmeta_single_bind( op, rs, mc, i );
}
if ( lerr != LDAP_SUCCESS ) {
rc = rs->sr_err = lerr;
/* FIXME: in some cases (e.g. unavailable)
* do not assume it's not candidate; rather
* mark this as an error to be eventually
* reported to client */
META_CANDIDATE_CLEAR( &candidates[ i ] );
break;
}
}
if ( mc != NULL ) {
for ( i = 0; i < mi->mi_ntargets; i++ ) {
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
}
}
asyncmeta_back_conn_free( mc );
}
/*
* rc is LDAP_SUCCESS if at least one bind succeeded,
* err is the last error that occurred during a bind;
* if at least (and at most?) one bind succeeds, fine.
*/
if ( rc != LDAP_SUCCESS ) {
/*
* deal with bind failure ...
*/
/*
* no target was found within the naming context,
* so bind must fail with invalid credentials
*/
if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
} else {
rs->sr_err = slap_map_api2result( rs );
}
send_ldap_result( op, rs );
return rs->sr_err;
}
return LDAP_SUCCESS;
}
static int
asyncmeta_bind_op_result(
Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
int candidate,
int msgid,
ldap_back_send_t sendok,
int dolock )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
LDAPMessage *res;
struct timeval tv;
int rc;
int nretries = mt->mt_nretries;
char buf[ SLAP_TEXT_BUFLEN ];
Debug( LDAP_DEBUG_TRACE,
">>> %s asyncmeta_bind_op_result[%d]\n",
op->o_log_prefix, candidate, 0 );
/* make sure this is clean */
assert( rs->sr_ctrls == NULL );
if ( rs->sr_err == LDAP_SUCCESS ) {
time_t stoptime = (time_t)(-1),
timeout;
int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
const char *timeout_text = "Operation timed out";
slap_op_t opidx = slap_req2op( op->o_tag );
/* since timeout is not specified, compute and use
* the one specific to the ongoing operation */
if ( opidx == LDAP_REQ_SEARCH ) {
if ( op->ors_tlimit <= 0 ) {
timeout = 0;
} else {
timeout = op->ors_tlimit;
timeout_err = LDAP_TIMELIMIT_EXCEEDED;
timeout_text = NULL;
}
} else {
timeout = mt->mt_timeout[ opidx ];
}
/* better than nothing :) */
if ( timeout == 0 ) {
if ( mi->mi_idle_timeout ) {
timeout = mi->mi_idle_timeout;
}
}
if ( timeout ) {
stoptime = op->o_time + timeout;
}
LDAP_BACK_TV_SET( &tv );
/*
* handle response!!!
*/
retry:;
rc = ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
switch ( rc ) {
case 0:
if ( nretries != META_RETRY_NEVER
|| ( timeout && slap_get_time() <= stoptime ) )
{
ldap_pvt_thread_yield();
if ( nretries > 0 ) {
nretries--;
}
tv = mt->mt_bind_timeout;
goto retry;
}
/* don't let anyone else use this handler,
* because there's a pending bind that will not
* be acknowledged */
assert( LDAP_BACK_CONN_BINDING( msc ) );
#ifdef DEBUG_205
Debug( LDAP_DEBUG_ANY, "### %s asyncmeta_bind_op_result ldap_unbind_ext[%d] ld=%p\n",
op->o_log_prefix, candidate, (void *)msc->msc_ld );
#endif /* DEBUG_205 */
rs->sr_err = timeout_err;
rs->sr_text = timeout_text;
break;
case -1:
ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER,
&rs->sr_err );
snprintf( buf, sizeof( buf ),
"err=%d (%s) nretries=%d",
rs->sr_err, ldap_err2string( rs->sr_err ), nretries );
Debug( LDAP_DEBUG_ANY,
"### %s asyncmeta_bind_op_result[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
break;
default:
/* only touch when activity actually took place... */
if ( mi->mi_idle_timeout != 0 && msc->msc_time < op->o_time ) {
msc->msc_time = op->o_time;
}
/* FIXME: matched? referrals? response controls? */
rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
NULL, NULL, NULL, NULL, 1 );
if ( rc != LDAP_SUCCESS ) {
rs->sr_err = rc;
}
rs->sr_err = slap_map_api2result( rs );
break;
}
}
rs->sr_err = slap_map_api2result( rs );
Debug( LDAP_DEBUG_TRACE,
"<<< %s asyncmeta_bind_op_result[%d] err=%d\n",
op->o_log_prefix, candidate, rs->sr_err );
return rs->sr_err;
}
/*
* asyncmeta_single_bind
*
* attempts to perform a bind with creds
*/
static int
asyncmeta_single_bind(
Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
int candidate )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
struct berval mdn = BER_BVNULL;
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int msgid;
a_dncookie dc;
struct berval save_o_dn;
int save_o_do_not_cache;
LDAPControl **ctrls = NULL;
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
/*
* Rewrite the bind dn if needed
*/
dc.target = mt;
dc.conn = op->o_conn;
dc.rs = rs;
dc.ctx = "bindDN";
if ( asyncmeta_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
rs->sr_text = "DN rewrite error";
rs->sr_err = LDAP_OTHER;
return rs->sr_err;
}
/* don't add proxyAuthz; set the bindDN */
save_o_dn = op->o_dn;
save_o_do_not_cache = op->o_do_not_cache;
op->o_do_not_cache = 1;
op->o_dn = op->o_req_dn;
ctrls = op->o_ctrls;
rs->sr_err = asyncmeta_controls_add( op, rs, mc, candidate, &ctrls );
op->o_dn = save_o_dn;
op->o_do_not_cache = save_o_do_not_cache;
if ( rs->sr_err != LDAP_SUCCESS ) {
goto return_results;
}
/* FIXME: this fixes the bind problem right now; we need
* to use the asynchronous version to get the "matched"
* and more in case of failure ... */
/* FIXME: should we check if at least some of the op->o_ctrls
* can/should be passed? */
for (;;) {
rs->sr_err = ldap_sasl_bind( msc->msc_ld, mdn.bv_val,
LDAP_SASL_SIMPLE, &op->orb_cred,
ctrls, NULL, &msgid );
if ( rs->sr_err != LDAP_X_CONNECTING ) {
break;
}
ldap_pvt_thread_yield();
}
mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
asyncmeta_bind_op_result( op, rs, mc, candidate, msgid, LDAP_BACK_DONTSEND, 1 );
if ( rs->sr_err != LDAP_SUCCESS ) {
goto return_results;
}
/* If defined, proxyAuthz will be used also when
* back-ldap is the authorizing backend; for this
* purpose, a successful bind is followed by a
* bind with the configured identity assertion */
/* NOTE: use with care */
if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
asyncmeta_proxy_authz_bind( mc, candidate, op, rs, LDAP_BACK_SENDERR, 1 );
if ( !LDAP_BACK_CONN_ISBOUND( msc ) ) {
goto return_results;
}
goto cache_refresh;
}
ber_bvreplace( &msc->msc_bound_ndn, &op->o_req_ndn );
LDAP_BACK_CONN_ISBOUND_SET( msc );
mc->mc_authz_target = candidate;
if ( META_BACK_TGT_SAVECRED( mt ) ) {
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
}
ber_bvreplace( &msc->msc_cred, &op->orb_cred );
ldap_set_rebind_proc( msc->msc_ld, mt->mt_rebind_f, msc );
}
cache_refresh:;
if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED
&& !BER_BVISEMPTY( &op->o_req_ndn ) )
{
( void )asyncmeta_dncache_update_entry( &mi->mi_cache,
&op->o_req_ndn, candidate );
}
return_results:;
if ( mdn.bv_val != op->o_req_dn.bv_val ) {
free( mdn.bv_val );
}
if ( META_BACK_TGT_QUARANTINE( mt ) ) {
asyncmeta_quarantine( op, mi, rs, candidate );
}
ldap_unbind_ext( msc->msc_ld, NULL, NULL );
msc->msc_ld = NULL;
ldap_ld_free( msc->msc_ldr, 0, NULL, NULL );
msc->msc_ldr = NULL;
return rs->sr_err;
}
/*
* asyncmeta_back_single_dobind
*/
int
asyncmeta_back_single_dobind(
Operation *op,
SlapReply *rs,
a_metaconn_t **mcp,
int candidate,
ldap_back_send_t sendok,
int nretries,
int dolock )
{
a_metaconn_t *mc = *mcp;
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int msgid;
assert( !LDAP_BACK_CONN_ISBOUND( msc ) );
if ( op->o_conn != NULL &&
!op->o_do_not_cache &&
( BER_BVISNULL( &msc->msc_bound_ndn ) ||
BER_BVISEMPTY( &msc->msc_bound_ndn ) ||
( LDAP_BACK_CONN_ISPRIV( mc ) && dn_match( &msc->msc_bound_ndn, &mt->mt_idassert_authcDN ) ) ||
( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
{
(void)asyncmeta_proxy_authz_bind( mc, candidate, op, rs, sendok, dolock );
} else {
char *binddn = "";
struct berval cred = BER_BVC( "" );
/* use credentials if available */
if ( !BER_BVISNULL( &msc->msc_bound_ndn )
&& !BER_BVISNULL( &msc->msc_cred ) )
{
binddn = msc->msc_bound_ndn.bv_val;
cred = msc->msc_cred;
}
for (;;) {
rs->sr_err = ldap_sasl_bind( msc->msc_ld,
binddn, LDAP_SASL_SIMPLE, &cred,
NULL, NULL, &msgid );
if ( rs->sr_err != LDAP_X_CONNECTING ) {
break;
}
ldap_pvt_thread_yield();
}
rs->sr_err = asyncmeta_bind_op_result( op, rs, mc, candidate, msgid, sendok, dolock );
/* if bind succeeded, but anonymous, clear msc_bound_ndn */
if ( rs->sr_err != LDAP_SUCCESS || binddn[0] == '\0' ) {
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ber_memfree( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
ber_memfree( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
}
}
if ( META_BACK_TGT_QUARANTINE( mt ) ) {
asyncmeta_quarantine( op, mi, rs, candidate );
}
return rs->sr_err;
}
/*
* asyncmeta_back_default_rebind
*
* This is a callback used for chasing referrals using the same
* credentials as the original user on this session.
*/
int
asyncmeta_back_default_rebind(
LDAP *ld,
LDAP_CONST char *url,
ber_tag_t request,
ber_int_t msgid,
void *params )
{
a_metasingleconn_t *msc = ( a_metasingleconn_t * )params;
return ldap_sasl_bind_s( ld, msc->msc_bound_ndn.bv_val,
LDAP_SASL_SIMPLE, &msc->msc_cred,
NULL, NULL, NULL );
}
/*
* meta_back_default_urllist
*
* This is a callback used for mucking with the urllist
*/
int
asyncmeta_back_default_urllist(
LDAP *ld,
LDAPURLDesc **urllist,
LDAPURLDesc **url,
void *params )
{
a_metatarget_t *mt = (a_metatarget_t *)params;
LDAPURLDesc **urltail;
if ( urllist == url ) {
return LDAP_SUCCESS;
}
for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
/* count */ ;
*urltail = *urllist;
*urllist = *url;
*url = NULL;
ldap_pvt_thread_mutex_lock( &mt->mt_uri_mutex );
if ( mt->mt_uri ) {
ch_free( mt->mt_uri );
}
ldap_get_option( ld, LDAP_OPT_URI, (void *)&mt->mt_uri );
ldap_pvt_thread_mutex_unlock( &mt->mt_uri_mutex );
return LDAP_SUCCESS;
}
int
asyncmeta_back_cancel(
a_metaconn_t *mc,
Operation *op,
ber_int_t msgid,
int candidate )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int rc = LDAP_OTHER;
Debug( LDAP_DEBUG_TRACE, ">>> %s asyncmeta_back_cancel[%d] msgid=%d\n",
op->o_log_prefix, candidate, msgid );
if (msc->msc_ld == NULL) {
Debug( LDAP_DEBUG_TRACE, ">>> %s asyncmeta_back_cancel[%d] msgid=%d\n already reset",
op->o_log_prefix, candidate, msgid );
return LDAP_SUCCESS;
}
/* default behavior */
if ( META_BACK_TGT_ABANDON( mt ) ) {
rc = ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
} else if ( META_BACK_TGT_IGNORE( mt ) ) {
rc = ldap_pvt_discard( msc->msc_ld, msgid );
} else if ( META_BACK_TGT_CANCEL( mt ) ) {
rc = ldap_cancel_s( msc->msc_ld, msgid, NULL, NULL );
} else {
assert( 0 );
}
Debug( LDAP_DEBUG_TRACE, "<<< %s asyncmeta_back_cancel[%d] err=%d\n",
op->o_log_prefix, candidate, rc );
return rc;
}
int
asyncmeta_back_abandon_candidate(
a_metaconn_t *mc,
Operation *op,
ber_int_t msgid,
int candidate )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int rc = LDAP_OTHER;
Debug( LDAP_DEBUG_TRACE, ">>> %s asyncmeta_back_abandon[%d] msgid=%d\n",
op->o_log_prefix, candidate, msgid );
rc = ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
Debug( LDAP_DEBUG_TRACE, "<<< %s asyncmeta_back_abandon[%d] err=%d\n",
op->o_log_prefix, candidate, rc );
return rc;
}
int
asyncmeta_back_cancel_msc(
Operation *op,
SlapReply *rs,
ber_int_t msgid,
a_metasingleconn_t *msc,
int candidate,
ldap_back_send_t sendok )
{
a_metainfo_t *mi = (a_metainfo_t *)op->o_bd->be_private;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
int rc = LDAP_OTHER;
Debug( LDAP_DEBUG_TRACE, ">>> %s asyncmeta_back_cancel_msc[%d] msgid=%d\n",
op->o_log_prefix, candidate, msgid );
/* default behavior */
if ( META_BACK_TGT_ABANDON( mt ) ) {
rc = ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
} else if ( META_BACK_TGT_IGNORE( mt ) ) {
rc = ldap_pvt_discard( msc->msc_ld, msgid );
} else if ( META_BACK_TGT_CANCEL( mt ) ) {
rc = ldap_cancel_s( msc->msc_ld, msgid, NULL, NULL );
} else {
assert( 0 );
}
Debug( LDAP_DEBUG_TRACE, "<<< %s asyncmeta_back_cancel_msc[%d] err=%d\n",
op->o_log_prefix, candidate, rc );
return rc;
}
/*
* FIXME: error return must be handled in a cleaner way ...
*/
int
asyncmeta_back_op_result(
a_metaconn_t *mc,
Operation *op,
SlapReply *rs,
int candidate,
ber_int_t msgid,
time_t timeout,
ldap_back_send_t sendok )
{
a_metainfo_t *mi = mc->mc_info;
const char *save_text = rs->sr_text,
*save_matched = rs->sr_matched;
BerVarray save_ref = rs->sr_ref;
LDAPControl **save_ctrls = rs->sr_ctrls;
void *matched_ctx = NULL;
char *matched = NULL;
char *text = NULL;
char **refs = NULL;
LDAPControl **ctrls = NULL;
assert( mc != NULL );
rs->sr_text = NULL;
rs->sr_matched = NULL;
rs->sr_ref = NULL;
rs->sr_ctrls = NULL;
if ( candidate != META_TARGET_NONE ) {
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
if ( LDAP_ERR_OK( rs->sr_err ) ) {
int rc;
struct timeval tv;
LDAPMessage *res = NULL;
time_t stoptime = (time_t)(-1);
int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
const char *timeout_text = "Operation timed out";
/* if timeout is not specified, compute and use
* the one specific to the ongoing operation */
if ( timeout == (time_t)(-1) ) {
slap_op_t opidx = slap_req2op( op->o_tag );
if ( opidx == SLAP_OP_SEARCH ) {
if ( op->ors_tlimit <= 0 ) {
timeout = 0;
} else {
timeout = op->ors_tlimit;
timeout_err = LDAP_TIMELIMIT_EXCEEDED;
timeout_text = NULL;
}
} else {
timeout = mt->mt_timeout[ opidx ];
}
}
/* better than nothing :) */
if ( timeout == 0 ) {
if ( mi->mi_idle_timeout ) {
timeout = mi->mi_idle_timeout;
}
}
if ( timeout ) {
stoptime = op->o_time + timeout;
}
LDAP_BACK_TV_SET( &tv );
retry:;
rc = ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
switch ( rc ) {
case 0:
if ( timeout && slap_get_time() > stoptime ) {
(void)asyncmeta_back_cancel( mc, op, msgid, candidate );
rs->sr_err = timeout_err;
rs->sr_text = timeout_text;
break;
}
LDAP_BACK_TV_SET( &tv );
ldap_pvt_thread_yield();
goto retry;
case -1:
ldap_get_option( msc->msc_ld, LDAP_OPT_RESULT_CODE,
&rs->sr_err );
break;
/* otherwise get the result; if it is not
* LDAP_SUCCESS, record it in the reply
* structure (this includes
* LDAP_COMPARE_{TRUE|FALSE}) */
default:
/* only touch when activity actually took place... */
if ( mi->mi_idle_timeout != 0 && msc->msc_time < op->o_time ) {
msc->msc_time = op->o_time;
}
rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
&matched, &text, &refs, &ctrls, 1 );
res = NULL;
if ( rc == LDAP_SUCCESS ) {
rs->sr_text = text;
} else {
rs->sr_err = rc;
}
rs->sr_err = slap_map_api2result( rs );
/* RFC 4511: referrals can only appear
* if result code is LDAP_REFERRAL */
if ( refs != NULL
&& refs[ 0 ] != NULL
&& refs[ 0 ][ 0 ] != '\0' )
{
if ( rs->sr_err != LDAP_REFERRAL ) {
Debug( LDAP_DEBUG_ANY,
"%s asyncmeta_back_op_result[%d]: "
"got referrals with err=%d\n",
op->o_log_prefix,
candidate, rs->sr_err );
} else {
int i;
for ( i = 0; refs[ i ] != NULL; i++ )
/* count */ ;
rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
op->o_tmpmemctx );
for ( i = 0; refs[ i ] != NULL; i++ ) {
ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
}
BER_BVZERO( &rs->sr_ref[ i ] );
}
} else if ( rs->sr_err == LDAP_REFERRAL ) {
Debug( LDAP_DEBUG_ANY,
"%s asyncmeta_back_op_result[%d]: "
"got err=%d with null "
"or empty referrals\n",
op->o_log_prefix,
candidate, rs->sr_err );
rs->sr_err = LDAP_NO_SUCH_OBJECT;
}
if ( ctrls != NULL ) {
rs->sr_ctrls = ctrls;
}
}
assert( res == NULL );
}
/* if the error in the reply structure is not
* LDAP_SUCCESS, try to map it from client
* to server error */
if ( !LDAP_ERR_OK( rs->sr_err ) ) {
rs->sr_err = slap_map_api2result( rs );
/* internal ops ( op->o_conn == NULL )
* must not reply to client */
if ( op->o_conn && !op->o_do_not_cache && matched ) {
/* record the (massaged) matched
* DN into the reply structure */
rs->sr_matched = matched;
}
}
if ( META_BACK_TGT_QUARANTINE( mt ) ) {
asyncmeta_quarantine( op, mi, rs, candidate );
}
} else {
int i,
err = rs->sr_err;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
char *xtext = NULL;
char *xmatched = NULL;
if ( msc->msc_ld == NULL ) {
continue;
}
rs->sr_err = LDAP_SUCCESS;
ldap_get_option( msc->msc_ld, LDAP_OPT_RESULT_CODE, &rs->sr_err );
if ( rs->sr_err != LDAP_SUCCESS ) {
/*
* better check the type of error. In some cases
* (search ?) it might be better to return a
* success if at least one of the targets gave
* positive result ...
*/
ldap_get_option( msc->msc_ld,
LDAP_OPT_DIAGNOSTIC_MESSAGE, &xtext );
if ( xtext != NULL && xtext [ 0 ] == '\0' ) {
ldap_memfree( xtext );
xtext = NULL;
}
ldap_get_option( msc->msc_ld,
LDAP_OPT_MATCHED_DN, &xmatched );
if ( xmatched != NULL && xmatched[ 0 ] == '\0' ) {
ldap_memfree( xmatched );
xmatched = NULL;
}
rs->sr_err = slap_map_api2result( rs );
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ),
"asyncmeta_back_op_result[%d] "
"err=%d text=\"%s\" matched=\"%s\"",
i, rs->sr_err,
( xtext ? xtext : "" ),
( xmatched ? xmatched : "" ) );
Debug( LDAP_DEBUG_ANY, "%s %s.\n",
op->o_log_prefix, buf, 0 );
}
/*
* FIXME: need to rewrite "match" (need rwinfo)
*/
switch ( rs->sr_err ) {
default:
err = rs->sr_err;
if ( xtext != NULL ) {
if ( text ) {
ldap_memfree( text );
}
text = xtext;
xtext = NULL;
}
if ( xmatched != NULL ) {
if ( matched ) {
ldap_memfree( matched );
}
matched = xmatched;
xmatched = NULL;
}
break;
}
if ( xtext ) {
ldap_memfree( xtext );
}
if ( xmatched ) {
ldap_memfree( xmatched );
}
}
if ( META_BACK_TGT_QUARANTINE( mi->mi_targets[ i ] ) ) {
asyncmeta_quarantine( op, mi, rs, i );
}
}
if ( err != LDAP_SUCCESS ) {
rs->sr_err = err;
}
}
if ( matched != NULL ) {
struct berval dn, pdn;
ber_str2bv( matched, 0, 0, &dn );
if ( dnPretty( NULL, &dn, &pdn, op->o_tmpmemctx ) == LDAP_SUCCESS ) {
ldap_memfree( matched );
matched_ctx = op->o_tmpmemctx;
matched = pdn.bv_val;
}
rs->sr_matched = matched;
}
if ( rs->sr_err == LDAP_UNAVAILABLE ) {
if ( !( sendok & LDAP_BACK_RETRYING ) ) {
if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
if ( rs->sr_text == NULL ) rs->sr_text = "Proxy operation retry failed";
send_ldap_result( op, rs );
}
}
} else if ( op->o_conn &&
( ( ( sendok & LDAP_BACK_SENDOK ) && LDAP_ERR_OK( rs->sr_err ) )
|| ( ( sendok & LDAP_BACK_SENDERR ) && !LDAP_ERR_OK( rs->sr_err ) ) ) )
{
send_ldap_result( op, rs );
}
if ( matched ) {
op->o_tmpfree( (char *)rs->sr_matched, matched_ctx );
}
if ( text ) {
ldap_memfree( text );
}
if ( rs->sr_ref ) {
op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
rs->sr_ref = NULL;
}
if ( refs ) {
ber_memvfree( (void **)refs );
}
if ( ctrls ) {
assert( rs->sr_ctrls != NULL );
ldap_controls_free( ctrls );
}
rs->sr_text = save_text;
rs->sr_matched = save_matched;
rs->sr_ref = save_ref;
rs->sr_ctrls = save_ctrls;
return( LDAP_ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
}
/*
* meta_back_proxy_authz_cred()
*
* prepares credentials & method for meta_back_proxy_authz_bind();
* or, if method is SASL, performs the SASL bind directly.
*/
int
asyncmeta_back_proxy_authz_cred(
a_metaconn_t *mc,
int candidate,
Operation *op,
SlapReply *rs,
ldap_back_send_t sendok,
struct berval *binddn,
struct berval *bindcred,
int *method )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
struct berval ndn;
int dobind = 0;
/* don't proxyAuthz if protocol is not LDAPv3 */
switch ( mt->mt_version ) {
case LDAP_VERSION3:
break;
case 0:
if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
break;
}
/* fall thru */
default:
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
goto done;
}
if ( op->o_tag == LDAP_REQ_BIND ) {
ndn = op->o_req_ndn;
} else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
ndn = op->o_conn->c_ndn;
} else {
ndn = op->o_ndn;
}
rs->sr_err = LDAP_SUCCESS;
/*
* FIXME: we need to let clients use proxyAuthz
* otherwise we cannot do symmetric pools of servers;
* we have to live with the fact that a user can
* authorize itself as any ID that is allowed
* by the authzTo directive of the "proxyauthzdn".
*/
/*
* NOTE: current Proxy Authorization specification
* and implementation do not allow proxy authorization
* control to be provided with Bind requests
*/
/*
* if no bind took place yet, but the connection is bound
* and the "proxyauthzdn" is set, then bind as
* "proxyauthzdn" and explicitly add the proxyAuthz
* control to every operation with the dn bound
* to the connection as control value.
*/
/* bind as proxyauthzdn only if no idassert mode
* is requested, or if the client's identity
* is authorized */
switch ( mt->mt_idassert_mode ) {
case LDAP_BACK_IDASSERT_LEGACY:
if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) && !BER_BVISEMPTY( &mt->mt_idassert_authcDN ) )
{
*binddn = mt->mt_idassert_authcDN;
*bindcred = mt->mt_idassert_passwd;
dobind = 1;
}
}
break;
default:
/* NOTE: rootdn can always idassert */
if ( BER_BVISNULL( &ndn )
&& mt->mt_idassert_authz == NULL
&& !( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
{
if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
goto done;
}
rs->sr_err = LDAP_SUCCESS;
*binddn = slap_empty_bv;
*bindcred = slap_empty_bv;
break;
} else if ( mt->mt_idassert_authz && !be_isroot( op ) ) {
struct berval authcDN;
if ( BER_BVISNULL( &ndn ) ) {
authcDN = slap_empty_bv;
} else {
authcDN = ndn;
}
rs->sr_err = slap_sasl_matches( op, mt->mt_idassert_authz,
&authcDN, &authcDN );
if ( rs->sr_err != LDAP_SUCCESS ) {
if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
goto done;
}
rs->sr_err = LDAP_SUCCESS;
*binddn = slap_empty_bv;
*bindcred = slap_empty_bv;
break;
}
}
*binddn = mt->mt_idassert_authcDN;
*bindcred = mt->mt_idassert_passwd;
dobind = 1;
break;
}
if ( dobind && mt->mt_idassert_authmethod == LDAP_AUTH_SASL ) {
#ifdef HAVE_CYRUS_SASL
void *defaults = NULL;
struct berval authzID = BER_BVNULL;
int freeauthz = 0;
/* if SASL supports native authz, prepare for it */
if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
( mt->mt_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
{
switch ( mt->mt_idassert_mode ) {
case LDAP_BACK_IDASSERT_OTHERID:
case LDAP_BACK_IDASSERT_OTHERDN:
authzID = mt->mt_idassert_authzID;
break;
case LDAP_BACK_IDASSERT_ANONYMOUS:
BER_BVSTR( &authzID, "dn:" );
break;
case LDAP_BACK_IDASSERT_SELF:
if ( BER_BVISNULL( &ndn ) ) {
/* connection is not authc'd, so don't idassert */
BER_BVSTR( &authzID, "dn:" );
break;
}
authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
ndn.bv_val, ndn.bv_len + 1 );
freeauthz = 1;
break;
default:
break;
}
}
if ( mt->mt_idassert_secprops != NULL ) {
rs->sr_err = ldap_set_option( msc->msc_ld,
LDAP_OPT_X_SASL_SECPROPS,
(void *)mt->mt_idassert_secprops );
if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
rs->sr_err = LDAP_OTHER;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
goto done;
}
}
defaults = lutil_sasl_defaults( msc->msc_ld,
mt->mt_idassert_sasl_mech.bv_val,
mt->mt_idassert_sasl_realm.bv_val,
mt->mt_idassert_authcID.bv_val,
mt->mt_idassert_passwd.bv_val,
authzID.bv_val );
if ( defaults == NULL ) {
rs->sr_err = LDAP_OTHER;
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
goto done;
}
rs->sr_err = ldap_sasl_interactive_bind_s( msc->msc_ld, binddn->bv_val,
mt->mt_idassert_sasl_mech.bv_val, NULL, NULL,
LDAP_SASL_QUIET, lutil_sasl_interact,
defaults );
rs->sr_err = slap_map_api2result( rs );
if ( rs->sr_err != LDAP_SUCCESS ) {
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
} else {
LDAP_BACK_CONN_ISBOUND_SET( msc );
}
lutil_sasl_freedefs( defaults );
if ( freeauthz ) {
slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
}
goto done;
#endif /* HAVE_CYRUS_SASL */
}
*method = mt->mt_idassert_authmethod;
switch ( mt->mt_idassert_authmethod ) {
case LDAP_AUTH_NONE:
BER_BVSTR( binddn, "" );
BER_BVSTR( bindcred, "" );
/* fallthru */
case LDAP_AUTH_SIMPLE:
break;
default:
/* unsupported! */
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
break;
}
done:;
if ( !BER_BVISEMPTY( binddn ) ) {
LDAP_BACK_CONN_ISIDASSERT_SET( msc );
}
return rs->sr_err;
}
static int
asyncmeta_proxy_authz_bind(
a_metaconn_t *mc,
int candidate,
Operation *op,
SlapReply *rs,
ldap_back_send_t sendok,
int dolock )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
struct berval binddn = BER_BVC( "" ),
cred = BER_BVC( "" );
int method = LDAP_AUTH_NONE,
rc;
rc = asyncmeta_back_proxy_authz_cred( mc, candidate, op, rs, sendok, &binddn, &cred, &method );
if ( rc == LDAP_SUCCESS && !LDAP_BACK_CONN_ISBOUND( msc ) ) {
int msgid;
switch ( method ) {
case LDAP_AUTH_NONE:
case LDAP_AUTH_SIMPLE:
for (;;) {
rs->sr_err = ldap_sasl_bind( msc->msc_ld,
binddn.bv_val, LDAP_SASL_SIMPLE,
&cred, NULL, NULL, &msgid );
if ( rs->sr_err != LDAP_X_CONNECTING ) {
break;
}
ldap_pvt_thread_yield();
}
rc = asyncmeta_bind_op_result( op, rs, mc, candidate, msgid, sendok, dolock );
if ( rc == LDAP_SUCCESS ) {
/* set rebind stuff in case of successful proxyAuthz bind,
* so that referral chasing is attempted using the right
* identity */
LDAP_BACK_CONN_ISBOUND_SET( msc );
ber_bvreplace( &msc->msc_bound_ndn, &binddn );
if ( META_BACK_TGT_SAVECRED( mt ) ) {
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
}
ber_bvreplace( &msc->msc_cred, &cred );
ldap_set_rebind_proc( msc->msc_ld, mt->mt_rebind_f, msc );
}
}
break;
default:
assert( 0 );
break;
}
}
return LDAP_BACK_CONN_ISBOUND( msc );
}
/*
* Add controls;
*
* if any needs to be added, it is prepended to existing ones,
* in a newly allocated array. The companion function
* mi->mi_ldap_extra->controls_free() must be used to restore the original
* status of op->o_ctrls.
*/
int
asyncmeta_controls_add(
Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
int candidate,
LDAPControl ***pctrls )
{
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
LDAPControl **ctrls = NULL;
/* set to the maximum number of controls this backend can add */
LDAPControl c[ 2 ] = {{ 0 }};
int n = 0, i, j1 = 0, j2 = 0;
*pctrls = NULL;
rs->sr_err = LDAP_SUCCESS;
/* don't add controls if protocol is not LDAPv3 */
switch ( mt->mt_version ) {
case LDAP_VERSION3:
break;
case 0:
if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
break;
}
/* fall thru */
default:
goto done;
}
/* put controls that go __before__ existing ones here */
/* proxyAuthz for identity assertion */
switch ( mi->mi_ldap_extra->proxy_authz_ctrl( op, rs, &msc->msc_bound_ndn,
mt->mt_version, &mt->mt_idassert, &c[ j1 ] ) )
{
case SLAP_CB_CONTINUE:
break;
case LDAP_SUCCESS:
j1++;
break;
default:
goto done;
}
/* put controls that go __after__ existing ones here */
#ifdef SLAP_CONTROL_X_SESSION_TRACKING
/* session tracking */
if ( META_BACK_TGT_ST_REQUEST( mt ) ) {
switch ( slap_ctrl_session_tracking_request_add( op, rs, &c[ j1 + j2 ] ) ) {
case SLAP_CB_CONTINUE:
break;
case LDAP_SUCCESS:
j2++;
break;
default:
goto done;
}
}
#endif /* SLAP_CONTROL_X_SESSION_TRACKING */
if ( rs->sr_err == SLAP_CB_CONTINUE ) {
rs->sr_err = LDAP_SUCCESS;
}
/* if nothing to do, just bail out */
if ( j1 == 0 && j2 == 0 ) {
goto done;
}
assert( j1 + j2 <= (int) (sizeof( c )/sizeof( c[0] )) );
if ( op->o_ctrls ) {
for ( n = 0; op->o_ctrls[ n ]; n++ )
/* just count ctrls */ ;
}
ctrls = op->o_tmpalloc( (n + j1 + j2 + 1) * sizeof( LDAPControl * ) + ( j1 + j2 ) * sizeof( LDAPControl ),
op->o_tmpmemctx );
if ( j1 ) {
ctrls[ 0 ] = (LDAPControl *)&ctrls[ n + j1 + j2 + 1 ];
*ctrls[ 0 ] = c[ 0 ];
for ( i = 1; i < j1; i++ ) {
ctrls[ i ] = &ctrls[ 0 ][ i ];
*ctrls[ i ] = c[ i ];
}
}
i = 0;
if ( op->o_ctrls ) {
for ( i = 0; op->o_ctrls[ i ]; i++ ) {
ctrls[ i + j1 ] = op->o_ctrls[ i ];
}
}
n += j1;
if ( j2 ) {
ctrls[ n ] = (LDAPControl *)&ctrls[ n + j2 + 1 ] + j1;
*ctrls[ n ] = c[ j1 ];
for ( i = 1; i < j2; i++ ) {
ctrls[ n + i ] = &ctrls[ n ][ i ];
*ctrls[ n + i ] = c[ i ];
}
}
ctrls[ n + j2 ] = NULL;
done:;
if ( ctrls == NULL ) {
ctrls = op->o_ctrls;
}
*pctrls = ctrls;
return rs->sr_err;
}
#if 0
/*
* Add controls;
*
* same as asyncmeta_controls_add, but creates a new controls array
* to be used by the operation copy
*/
int
asyncmeta_controls_add_copy(
Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
int candidate,
LDAPControl ***pctrls )
{
a_metainfo_t *mi = (a_metainfo_t *)op->o_bd->be_private;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = mc->mc_conns[ candidate ];
LDAPControl **ctrls = NULL;
/* set to the maximum number of controls this backend can add */
LDAPControl c[ 2 ] = {{ 0 }};
int n = 0, i, j1 = 0, j2 = 0;
*pctrls = NULL;
rs->sr_err = LDAP_SUCCESS;
/* don't add controls if protocol is not LDAPv3 */
switch ( mt->mt_version ) {
case LDAP_VERSION3:
break;
case 0:
if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
break;
}
/* fall thru */
default:
goto done;
}
/* put controls that go __before__ existing ones here */
/* proxyAuthz for identity assertion */
switch ( mi->mi_ldap_extra->proxy_authz_ctrl( op, rs, &msc->msc_bound_ndn,
mt->mt_version, &mt->mt_idassert, &c[ j1 ] ) )
{
case SLAP_CB_CONTINUE:
break;
case LDAP_SUCCESS:
j1++;
break;
default:
goto done;
}
/* put controls that go __after__ existing ones here */
#ifdef SLAP_CONTROL_X_SESSION_TRACKING
/* session tracking */
if ( META_BACK_TGT_ST_REQUEST( mt ) ) {
switch ( slap_ctrl_session_tracking_request_add( op, rs, &c[ j1 + j2 ] ) ) {
case SLAP_CB_CONTINUE:
break;
case LDAP_SUCCESS:
j2++;
break;
default:
goto copy;
}
}
#endif /* SLAP_CONTROL_X_SESSION_TRACKING */
if ( rs->sr_err == SLAP_CB_CONTINUE ) {
rs->sr_err = LDAP_SUCCESS;
}
copy:
if ( op->o_ctrls ) {
for ( n = 0; op->o_ctrls[ n ]; n++ )
/* just count ctrls */ ;
}
ctrls = ch_calloc( (n + j1 + j2 + 1) * sizeof( LDAPControl * ) + ( j1 + j2 ) * sizeof( LDAPControl ));
if ( j1 ) {
ctrls[ 0 ] = (LDAPControl *)&ctrls[ n + j1 + j2 + 1 ];
*ctrls[ 0 ] = c[ 0 ];
for ( i = 1; i < j1; i++ ) {
ctrls[ i ] = &ctrls[ 0 ][ i ];
*ctrls[ i ] = c[ i ];
}
}
i = 0;
if ( op->o_ctrls ) {
for ( i = 0; op->o_ctrls[ i ]; i++ ) {
ctrls[ i + j1 ] = op->o_ctrls[ i ];
}
}
n += j1;
if ( j2 ) {
ctrls[ n ] = (LDAPControl *)&ctrls[ n + j2 + 1 ] + j1;
*ctrls[ n ] = c[ j1 ];
for ( i = 1; i < j2; i++ ) {
ctrls[ n + i ] = &ctrls[ n ][ i ];
*ctrls[ n + i ] = c[ i ];
}
}
ctrls[ n + j2 ] = NULL;
done:;
op->o_ctrls = ctrls;
return rs->sr_err;
}
#endif
/*
* asyncmeta_dobind_init()
*
* initiates bind for a candidate target
*/
meta_search_candidate_t
asyncmeta_dobind_init(Operation *op, SlapReply *rs, bm_context_t *bc, a_metaconn_t *mc, int candidate)
{
SlapReply *candidates = bc->candidates;
a_metainfo_t *mi = ( a_metainfo_t * )mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
ber_socket_t s;
struct berval binddn = msc->msc_bound_ndn,
cred = msc->msc_cred;
int method;
int rc;
ber_int_t msgid;
meta_search_candidate_t retcode;
Debug( LDAP_DEBUG_TRACE, "%s >>> asyncmeta_search_dobind_init[%d]\n",
op->o_log_prefix, candidate, 0 );
if ( mc->mc_authz_target == META_BOUND_ALL ) {
return META_SEARCH_CANDIDATE;
}
retcode = META_SEARCH_BINDING;
if ( LDAP_BACK_CONN_ISBOUND( msc ) || LDAP_BACK_CONN_ISANON( msc ) ) {
/* already bound (or anonymous) */
#ifdef DEBUG_205
char buf[ SLAP_TEXT_BUFLEN ] = { '\0' };
int bound = 0;
if ( LDAP_BACK_CONN_ISBOUND( msc ) ) {
bound = 1;
}
snprintf( buf, sizeof( buf ), " mc=%p ld=%p%s DN=\"%s\"",
(void *)mc, (void *)msc->msc_ld,
bound ? " bound" : " anonymous",
bound == 0 ? "" : msc->msc_bound_ndn.bv_val );
Debug( LDAP_DEBUG_ANY, "### %s asyncmeta_search_dobind_init[%d]%s\n",
op->o_log_prefix, candidate, buf );
#endif /* DEBUG_205 */
retcode = META_SEARCH_CANDIDATE;
} else if ( META_BACK_CONN_CREATING( msc ) || LDAP_BACK_CONN_BINDING( msc ) ) {
/* another thread is binding the target for this conn; wait */
#ifdef DEBUG_205
char buf[ SLAP_TEXT_BUFLEN ] = { '\0' };
snprintf( buf, sizeof( buf ), " mc=%p ld=%p needbind",
(void *)mc, (void *)msc->msc_ld );
Debug( LDAP_DEBUG_ANY, "### %s asyncmeta_search_dobind_init[%d]%s\n",
op->o_log_prefix, candidate, buf );
#endif /* DEBUG_205 */
candidates[ candidate ].sr_msgid = META_MSGID_NEED_BIND;
retcode = META_SEARCH_NEED_BIND;
} else {
/* we'll need to bind the target for this conn */
#ifdef DEBUG_205
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ), " mc=%p ld=%p binding",
(void *)mc, (void *)msc->msc_ld );
Debug( LDAP_DEBUG_ANY, "### %s asyncmeta_search_dobind_init[%d]%s\n",
op->o_log_prefix, candidate, buf );
#endif /* DEBUG_205 */
if ( msc->msc_ld == NULL ) {
/* for some reason (e.g. because formerly in "binding"
* state, with eventual connection expiration or invalidation)
* it was not initialized as expected */
Debug( LDAP_DEBUG_ANY, "%s asyncmeta_search_dobind_init[%d] mc=%p ld=NULL\n",
op->o_log_prefix, candidate, (void *)mc );
rc = asyncmeta_init_one_conn( op, rs, mc, candidate,
LDAP_BACK_CONN_ISPRIV( mc ), LDAP_BACK_DONTSEND, 0 );
switch ( rc ) {
case LDAP_SUCCESS:
assert( msc->msc_ld != NULL );
break;
case LDAP_SERVER_DOWN:
case LDAP_UNAVAILABLE:
goto down;
default:
goto other;
}
}
LDAP_BACK_CONN_BINDING_SET( msc );
}
if ( retcode != META_SEARCH_BINDING ) {
return retcode;
}
if ( op->o_conn != NULL &&
!op->o_do_not_cache &&
( BER_BVISNULL( &msc->msc_bound_ndn ) ||
BER_BVISEMPTY( &msc->msc_bound_ndn ) ||
( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
{
rc = asyncmeta_back_proxy_authz_cred( mc, candidate, op, rs, LDAP_BACK_DONTSEND, &binddn, &cred, &method );
switch ( rc ) {
case LDAP_SUCCESS:
break;
case LDAP_UNAVAILABLE:
goto down;
default:
goto other;
}
/* NOTE: we copy things here, even if bind didn't succeed yet,
* because the connection is not shared until bind is over */
if ( !BER_BVISNULL( &binddn ) ) {
ldap_pvt_thread_mutex_lock(&mc->mc_om_mutex);
ber_bvreplace( &msc->msc_bound_ndn, &binddn );
if ( META_BACK_TGT_SAVECRED( mt ) && !BER_BVISNULL( &cred ) ) {
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
}
ber_bvreplace( &msc->msc_cred, &cred );
}
ldap_pvt_thread_mutex_unlock(&mc->mc_om_mutex);
}
if ( LDAP_BACK_CONN_ISBOUND( msc ) ) {
/* apparently, idassert was configured with SASL bind,
* so bind occurred inside meta_back_proxy_authz_cred() */
LDAP_BACK_CONN_BINDING_CLEAR( msc );
return META_SEARCH_CANDIDATE;
}
/* paranoid */
switch ( method ) {
case LDAP_AUTH_NONE:
case LDAP_AUTH_SIMPLE:
/* do a simple bind with binddn, cred */
break;
default:
assert( 0 );
break;
}
}
assert( msc->msc_ld != NULL );
if ( !BER_BVISEMPTY( &binddn ) && BER_BVISEMPTY( &cred ) ) {
/* bind anonymously? */
Debug( LDAP_DEBUG_ANY, "%s asyncmeta_search_dobind_init[%d] mc=%p: "
"non-empty dn with empty cred; binding anonymously\n",
op->o_log_prefix, candidate, (void *)mc );
cred = slap_empty_bv;
} else if ( BER_BVISEMPTY( &binddn ) && !BER_BVISEMPTY( &cred ) ) {
/* error */
Debug( LDAP_DEBUG_ANY, "%s asyncmeta_search_dobind_init[%d] mc=%p: "
"empty dn with non-empty cred: error\n",
op->o_log_prefix, candidate, (void *)mc );
rc = LDAP_OTHER;
goto other;
}
retry_bind:
rc = ldap_sasl_bind( msc->msc_ld, binddn.bv_val, LDAP_SASL_SIMPLE, &cred,
NULL, NULL, &msgid );
ldap_get_option( msc->msc_ld, LDAP_OPT_RESULT_CODE, &rc );
if (rc == LDAP_SERVER_DOWN ) {
goto down;
}
candidates[ candidate ].sr_msgid = msgid;
asyncmeta_set_msc_time(msc);
#ifdef DEBUG_205
{
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ), "asyncmeta_search_dobind_init[%d] mc=%p ld=%p rc=%d",
candidate, (void *)mc, (void *)mc->mc_conns[ candidate ].msc_ld, rc );
Debug( LDAP_DEBUG_ANY, "### %s %s\n",
op->o_log_prefix, buf, 0 );
}
#endif /* DEBUG_205 */
switch ( rc ) {
case LDAP_SUCCESS:
assert( msgid >= 0 );
META_BINDING_SET( &candidates[ candidate ] );
rs->sr_err = LDAP_SUCCESS;
return META_SEARCH_BINDING;
case LDAP_X_CONNECTING:
/* must retry, same conn */
candidates[ candidate ].sr_msgid = META_MSGID_CONNECTING;
LDAP_BACK_CONN_BINDING_CLEAR( msc );
goto retry_bind;
case LDAP_SERVER_DOWN:
down:;
retcode = META_SEARCH_ERR;
rs->sr_err = LDAP_UNAVAILABLE;
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
break;
/* fall thru */
default:
other:;
rs->sr_err = rc;
rc = slap_map_api2result( rs );
candidates[ candidate ].sr_err = rc;
if ( META_BACK_ONERR_STOP( mi ) ) {
retcode = META_SEARCH_ERR;
} else {
retcode = META_SEARCH_NOT_CANDIDATE;
}
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
break;
}
return retcode;
}
meta_search_candidate_t
asyncmeta_dobind_init_with_retry(Operation *op, SlapReply *rs, bm_context_t *bc, a_metaconn_t *mc, int candidate)
{
int rc, retries = 1;
a_metasingleconn_t *msc = &mc->mc_conns[candidate];
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
SlapReply *candidates = bc->candidates;
retry_dobind:
rc = asyncmeta_dobind_init(op, rs, bc, mc, candidate);
if (rs->sr_err != LDAP_UNAVAILABLE) {
return rc;
} else if (retries <= 0) {
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
return rc;
}
/* need to retry */
retries--;
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
/* this lock is required; however,
* it's invoked only when logging is on */
ldap_pvt_thread_mutex_lock( &mt->mt_uri_mutex );
snprintf( buf, sizeof( buf ),
"retrying URI=\"%s\" DN=\"%s\"",
mt->mt_uri,
BER_BVISNULL( &msc->msc_bound_ndn ) ?
"" : msc->msc_bound_ndn.bv_val );
ldap_pvt_thread_mutex_unlock( &mt->mt_uri_mutex );
Debug( LDAP_DEBUG_ANY,
"%s asyncmeta_search_dobind_init_with_retry[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
rc = asyncmeta_init_one_conn( op, rs, mc, candidate,
LDAP_BACK_CONN_ISPRIV( mc ), LDAP_BACK_DONTSEND, 0 );
if (rs->sr_err != LDAP_SUCCESS) {
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
return META_SEARCH_ERR;
}
goto retry_dobind;
return rc;
}
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