#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "ldap_pvt.h"
#include "slap.h"
#ifdef LDAP_SLAPI
#include "slapi/slapi.h"
#endif
int
do_bind(
Operation *op,
SlapReply *rs )
{
BerElement *ber = op->o_ber;
ber_int_t version;
ber_tag_t method;
struct berval mech = BER_BVNULL;
struct berval dn = BER_BVNULL;
ber_tag_t tag;
Backend *be = NULL;
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ENTRY, "do_bind: conn %d\n", op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
#endif
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
if ( op->o_conn->c_sasl_bind_in_progress ) {
be = op->o_conn->c_authz_backend;
}
if ( op->o_conn->c_dn.bv_len ) {
Statslog( LDAP_DEBUG_STATS,
"conn=%lu op=%lu BIND anonymous mech=implicit ssf=0\n",
op->o_connid, op->o_opid, 0, 0, 0 );
}
connection2anonymous( op->o_conn );
if ( op->o_conn->c_sasl_bind_in_progress ) {
op->o_conn->c_authz_backend = be;
}
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
if ( op->o_dn.bv_val != NULL ) {
free( op->o_dn.bv_val );
op->o_dn.bv_val = ch_strdup( "" );
op->o_dn.bv_len = 0;
}
if ( op->o_ndn.bv_val != NULL ) {
free( op->o_ndn.bv_val );
op->o_ndn.bv_val = ch_strdup( "" );
op->o_ndn.bv_len = 0;
}
tag = ber_scanf( ber, "{imt" , &version, &dn, &method );
if ( tag == LBER_ERROR ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_bind: conn %d ber_scanf failed\n", op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
#endif
send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
rs->sr_err = SLAPD_DISCONNECT;
goto cleanup;
}
op->o_protocol = version;
op->orb_method = method;
if( op->orb_method != LDAP_AUTH_SASL ) {
tag = ber_scanf( ber, "m}", &op->orb_cred );
} else {
tag = ber_scanf( ber, "{m" , &mech );
if ( tag != LBER_ERROR ) {
ber_len_t len;
tag = ber_peek_tag( ber, &len );
if ( tag == LDAP_TAG_LDAPCRED ) {
tag = ber_scanf( ber, "m", &op->orb_cred );
} else {
tag = LDAP_TAG_LDAPCRED;
op->orb_cred.bv_val = NULL;
op->orb_cred.bv_len = 0;
}
if ( tag != LBER_ERROR ) {
tag = ber_scanf( ber, "}}" );
}
}
}
if ( tag == LBER_ERROR ) {
send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
rs->sr_err = SLAPD_DISCONNECT;
goto cleanup;
}
if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %d get_ctrls failed\n", op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 );
#endif
goto cleanup;
}
rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
op->o_tmpmemctx );
if ( rs->sr_err != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %d invalid dn (%s)\n",
op->o_connid, dn.bv_val, 0 );
#else
Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n",
dn.bv_val, 0, 0 );
#endif
send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
goto cleanup;
}
if( op->orb_method == LDAP_AUTH_SASL ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_sasl_bind: conn %d dn (%s) mech %s\n",
op->o_connid, op->o_req_dn.bv_val, mech.bv_val );
#else
Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n",
op->o_req_dn.bv_val, mech.bv_val, NULL );
#endif
} else {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_bind: version=%ld dn=\"%s\" method=%ld\n",
(unsigned long) version, op->o_req_dn.bv_val,
(unsigned long) op->orb_method );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: version=%ld dn=\"%s\" method=%ld\n",
(unsigned long) version, op->o_req_dn.bv_val,
(unsigned long) op->orb_method );
#endif
}
Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu BIND dn=\"%s\" method=%ld\n",
op->o_connid, op->o_opid, op->o_req_dn.bv_val,
(unsigned long) op->orb_method, 0 );
if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %d unknown version = %ld\n",
op->o_connid, (unsigned long)version, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n",
(unsigned long) version, 0, 0 );
#endif
send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
"requested protocol version not supported" );
goto cleanup;
} else if (!( global_allows & SLAP_ALLOW_BIND_V2 ) &&
version < LDAP_VERSION3 )
{
send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
"historical protocol version requested, use LDAPv3 instead" );
goto cleanup;
}
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
op->o_conn->c_protocol = version;
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
send_ldap_error( op, rs,
LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
"manageDSAit control inappropriate" );
goto cleanup;
}
op->o_conn->c_sasl_bindop = op;
if ( op->orb_method == LDAP_AUTH_SASL ) {
if ( version < LDAP_VERSION3 ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %d sasl with LDAPv%ld\n",
op->o_connid, (unsigned long)version , 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
(unsigned long) version, 0, 0 );
#endif
send_ldap_discon( op, rs,
LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
rs->sr_err = SLAPD_DISCONNECT;
goto cleanup;
}
if( mech.bv_len == 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %d no SASL mechanism provided\n",
op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"do_bind: no sasl mechanism provided\n",
0, 0, 0 );
#endif
send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
"no SASL mechanism provided" );
goto cleanup;
}
if( backend_check_restrictions( op, rs, &mech ) != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
goto cleanup;
}
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
if ( op->o_conn->c_sasl_bind_in_progress ) {
if( !bvmatch( &op->o_conn->c_sasl_bind_mech, &mech ) ) {
slap_sasl_reset(op->o_conn);
}
} else {
ber_dupbv(&op->o_conn->c_sasl_bind_mech, &mech);
}
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
rs->sr_err = slap_sasl_bind( op, rs );
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
if( rs->sr_err == LDAP_SUCCESS ) {
ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
if( op->orb_edn.bv_len != 0 ) {
ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
}
op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
BER_BVZERO( &op->orb_edn );
op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
op->o_conn->c_sasl_bind_in_progress = 0;
op->o_conn->c_sasl_ssf = op->orb_ssf;
if( op->orb_ssf > op->o_conn->c_ssf ) {
op->o_conn->c_ssf = op->orb_ssf;
}
if( op->o_conn->c_dn.bv_len != 0 ) {
ber_len_t max = sockbuf_max_incoming_auth;
ber_sockbuf_ctrl( op->o_conn->c_sb,
LBER_SB_OPT_SET_MAX_INCOMING, &max );
}
Statslog( LDAP_DEBUG_STATS,
"conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=%d\n",
op->o_connid, op->o_opid,
op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
op->o_conn->c_authmech.bv_val, op->orb_ssf );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
op->o_conn->c_authmech.bv_val,
op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
op->orb_ssf );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
op->o_conn->c_authmech.bv_val,
op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
op->orb_ssf );
#endif
} else if ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS ) {
op->o_conn->c_sasl_bind_in_progress = 1;
} else {
if ( op->o_conn->c_sasl_bind_mech.bv_val ) {
free( op->o_conn->c_sasl_bind_mech.bv_val );
op->o_conn->c_sasl_bind_mech.bv_val = NULL;
op->o_conn->c_sasl_bind_mech.bv_len = 0;
}
op->o_conn->c_sasl_bind_in_progress = 0;
}
#ifdef LDAP_SLAPI
#define pb op->o_pb
if ( pb ) {
slapi_int_pblock_set_operation( pb, op );
slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)dn.bv_val );
slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
slapi_pblock_set( pb, SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
(void) slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_BIND_FN, pb );
}
#endif
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
goto cleanup;
} else {
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
if ( op->o_conn->c_sasl_bind_mech.bv_val != NULL ) {
free(op->o_conn->c_sasl_bind_mech.bv_val);
op->o_conn->c_sasl_bind_mech.bv_val = NULL;
op->o_conn->c_sasl_bind_mech.bv_len = 0;
}
op->o_conn->c_sasl_bind_in_progress = 0;
slap_sasl_reset( op->o_conn );
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
}
if ( op->orb_method == LDAP_AUTH_SIMPLE ) {
ber_str2bv( "SIMPLE", sizeof("SIMPLE")-1, 0, &mech );
if ( op->orb_cred.bv_len == 0 || op->o_req_ndn.bv_len == 0 ) {
rs->sr_err = LDAP_SUCCESS;
if( op->orb_cred.bv_len &&
!( global_allows & SLAP_ALLOW_BIND_ANON_CRED ))
{
rs->sr_err = LDAP_INVALID_CREDENTIALS;
} else if ( op->o_req_ndn.bv_len &&
!( global_allows & SLAP_ALLOW_BIND_ANON_DN ))
{
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text =
"unauthenticated bind (DN with no password) disallowed";
} else if ( global_disallows & SLAP_DISALLOW_BIND_ANON ) {
rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
rs->sr_text = "anonymous bind disallowed";
} else {
backend_check_restrictions( op, rs, &mech );
}
send_ldap_result( op, rs );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_bind: conn %d v%d anonymous bind\n",
op->o_connid, version , 0 );
#else
Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
version, 0, 0 );
#endif
goto cleanup;
} else if ( global_disallows & SLAP_DISALLOW_BIND_SIMPLE ) {
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "unwilling to perform simple authentication";
send_ldap_result( op, rs );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %d v%d simple bind(%s) disallowed\n",
op->o_connid, version, op->o_req_ndn.bv_val );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d simple bind(%s) disallowed\n",
version, op->o_req_ndn.bv_val, 0 );
#endif
goto cleanup;
}
#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
} else if ( op->orb_method == LDAP_AUTH_KRBV41 ) {
if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) {
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "unwilling to perform Kerberos V4 bind";
send_ldap_result( op, rs );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_bind: conn %d v%d Kerberos V4 (step 1) bind refused\n",
op->o_connid, version , 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d Kerberos V4 (step 1) bind refused\n",
version, 0, 0 );
#endif
goto cleanup;
}
ber_str2bv( "KRBV4", sizeof("KRBV4")-1, 0, &mech );
} else if ( op->orb_method == LDAP_AUTH_KRBV42 ) {
rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
rs->sr_text = "Kerberos V4 (step 2) bind not supported";
send_ldap_result( op, rs );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_bind: conn %d v%d Kerberos V4 (step 2) bind refused\n",
op->o_connid, version , 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d Kerberos V4 (step 2) bind refused\n",
version, 0, 0 );
#endif
goto cleanup;
#endif
} else {
rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
rs->sr_text = "unknown authentication method";
send_ldap_result( op, rs );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: conn %ld v%d unknown authentication method (%ld)\n",
op->o_connid, version, op->orb_method );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d unknown authentication method (%ld)\n",
version, op->orb_method, 0 );
#endif
goto cleanup;
}
if ( (op->o_bd = select_backend( &op->o_req_ndn, 0, 0 )) == NULL ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
send_ldap_result( op, rs );
goto cleanup;
}
if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
goto cleanup;
}
#ifdef LDAP_SLAPI
if ( pb ) {
int rc;
slapi_int_pblock_set_operation( pb, op );
slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)dn.bv_val );
slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
slapi_pblock_set( pb, SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
slapi_pblock_set( pb, SLAPI_CONN_DN, (void *)(0) );
rc = slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_PRE_BIND_FN, pb );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: Bind preoperation plugin returned %d\n",
rs->sr_err, 0, 0);
#else
Debug(LDAP_DEBUG_TRACE,
"do_bind: Bind preoperation plugin returned %d.\n",
rs->sr_err, 0, 0);
#endif
switch ( rc ) {
case SLAPI_BIND_SUCCESS:
break;
case SLAPI_BIND_FAIL:
rs->sr_err = LDAP_INVALID_CREDENTIALS;
send_ldap_result( op, rs );
goto cleanup;
break;
case SLAPI_BIND_ANONYMOUS:
default:
if ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
(void *)&rs->sr_err) != 0 )
{
rs->sr_err = LDAP_OTHER;
}
op->orb_edn.bv_val = NULL;
op->orb_edn.bv_len = 0;
if ( rs->sr_err == LDAP_SUCCESS ) {
slapi_pblock_get( pb, SLAPI_CONN_DN,
(void *)&op->orb_edn.bv_val );
if ( op->orb_edn.bv_val == NULL ) {
if ( rc == 1 ) {
break;
}
} else {
op->orb_edn.bv_len = strlen( op->orb_edn.bv_val );
}
rs->sr_err = dnPrettyNormal( NULL, &op->orb_edn,
&op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
ber_dupbv(&op->o_conn->c_ndn, &op->o_req_ndn);
op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
op->o_req_dn.bv_val = NULL;
op->o_req_dn.bv_len = 0;
op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
op->o_req_ndn.bv_val = NULL;
op->o_req_ndn.bv_len = 0;
if ( op->o_conn->c_dn.bv_len != 0 ) {
ber_len_t max = sockbuf_max_incoming_auth;
ber_sockbuf_ctrl( op->o_conn->c_sb,
LBER_SB_OPT_SET_MAX_INCOMING, &max );
}
Statslog( LDAP_DEBUG_STATS,
"conn=%lu op=%lu BIND dn=\"%s\" mech=%s (SLAPI) ssf=0\n",
op->o_connid, op->o_opid,
op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
mech.bv_val, 0 );
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
}
goto cleanup;
break;
}
}
#endif
if( op->o_bd->be_bind ) {
rs->sr_err = (op->o_bd->be_bind)( op, rs );
if ( rs->sr_err == 0 ) {
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
if( op->o_conn->c_authz_backend == NULL ) {
op->o_conn->c_authz_backend = op->o_bd;
}
if( op->orb_edn.bv_len ) {
op->o_conn->c_dn = op->orb_edn;
} else {
ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
}
ber_dupbv( &op->o_conn->c_ndn, &op->o_req_ndn );
if( op->o_conn->c_dn.bv_len != 0 ) {
ber_len_t max = sockbuf_max_incoming_auth;
ber_sockbuf_ctrl( op->o_conn->c_sb,
LBER_SB_OPT_SET_MAX_INCOMING, &max );
}
Statslog( LDAP_DEBUG_STATS,
"conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=0\n",
op->o_connid, op->o_opid,
op->o_conn->c_dn.bv_val, mech.bv_val, 0 );
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_bind: v%d bind: \"%s\" to \"%s\" \n",
version, op->o_conn->c_dn.bv_val, op->o_conn->c_dn.bv_val );
#else
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d bind: \"%s\" to \"%s\"\n",
version, dn.bv_val, op->o_conn->c_dn.bv_val );
#endif
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
send_ldap_result( op, rs );
} else if (op->orb_edn.bv_val != NULL) {
free( op->orb_edn.bv_val );
}
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported within naming context" );
}
#ifdef LDAP_SLAPI
if ( pb != NULL &&
slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_BIND_FN, pb ) < 0 )
{
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, INFO,
"do_bind: Bind postoperation plugins failed\n",
0, 0, 0);
#else
Debug(LDAP_DEBUG_TRACE,
"do_bind: Bind postoperation plugins failed.\n",
0, 0, 0);
#endif
}
#endif
cleanup:
if ( rs->sr_err == LDAP_SUCCESS ) {
if ( op->orb_method != LDAP_AUTH_SASL ) {
ber_dupbv( &op->o_conn->c_authmech, &mech );
}
op->o_conn->c_authtype = op->orb_method;
}
op->o_conn->c_sasl_bindop = NULL;
if( op->o_req_dn.bv_val != NULL ) {
sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
op->o_req_dn.bv_val = NULL;
}
if( op->o_req_ndn.bv_val != NULL ) {
sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
op->o_req_ndn.bv_val = NULL;
}
return rs->sr_err;
}