#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
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;
Debug( LDAP_DEBUG_TRACE, "%s do_bind\n",
op->o_log_prefix, 0, 0 );
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 ( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
Statslog( LDAP_DEBUG_STATS,
"%s BIND anonymous mech=implicit ssf=0\n",
op->o_log_prefix, 0, 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 ( !BER_BVISNULL( &op->o_dn ) ) {
op->o_dn.bv_val[0] = '\0';
op->o_dn.bv_len = 0;
}
if ( !BER_BVISNULL( &op->o_ndn ) ) {
op->o_ndn.bv_val[0] = '\0';
op->o_ndn.bv_len = 0;
}
tag = ber_scanf( ber, "{imt" , &version, &dn, &method );
if ( tag == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "%s do_bind: ber_scanf failed\n",
op->o_log_prefix, 0, 0 );
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;
BER_BVZERO( &op->orb_cred );
}
if ( tag != LBER_ERROR ) {
tag = ber_scanf( ber, "}}" );
}
}
}
if ( tag == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "%s do_bind: ber_scanf failed\n",
op->o_log_prefix, 0, 0 );
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 ) {
Debug( LDAP_DEBUG_ANY, "%s do_bind: get_ctrls failed\n",
op->o_log_prefix, 0, 0 );
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 ) {
Debug( LDAP_DEBUG_ANY, "%s do_bind: invalid dn (%s)\n",
op->o_log_prefix, dn.bv_val, 0 );
send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
goto cleanup;
}
Statslog( LDAP_DEBUG_STATS, "%s BIND dn=\"%s\" method=%ld\n",
op->o_log_prefix, op->o_req_dn.bv_val,
(unsigned long) op->orb_method, 0, 0 );
if( op->orb_method == LDAP_AUTH_SASL ) {
Debug( LDAP_DEBUG_TRACE, "do_bind: dn (%s) SASL mech %s\n",
op->o_req_dn.bv_val, mech.bv_val, NULL );
} 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 );
}
if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
Debug( LDAP_DEBUG_ANY, "%s do_bind: unknown version=%ld\n",
op->o_log_prefix, (unsigned long) version, 0 );
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 );
op->orb_mech = mech;
op->o_bd = frontendDB;
rs->sr_err = frontendDB->be_bind( op, rs );
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;
}
if( !BER_BVISNULL( &op->o_req_dn ) ) {
slap_sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
BER_BVZERO( &op->o_req_dn );
}
if( !BER_BVISNULL( &op->o_req_ndn ) ) {
slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
BER_BVZERO( &op->o_req_ndn );
}
return rs->sr_err;
}
int
fe_op_bind( Operation *op, SlapReply *rs )
{
BackendDB *bd = op->o_bd;
if( get_manageDSAit( op ) == SLAP_CONTROL_CRITICAL ) {
send_ldap_error( op, rs,
LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
"manageDSAit control inappropriate" );
goto cleanup;
}
if ( op->orb_method == LDAP_AUTH_SASL ) {
if ( op->o_protocol < LDAP_VERSION3 ) {
Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
(unsigned long)op->o_protocol, 0, 0 );
send_ldap_discon( op, rs,
LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
rs->sr_err = SLAPD_DISCONNECT;
goto cleanup;
}
if( BER_BVISNULL( &op->orb_mech ) || BER_BVISEMPTY( &op->orb_mech ) ) {
Debug( LDAP_DEBUG_ANY,
"do_bind: no sasl mechanism provided\n",
0, 0, 0 );
send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
"no SASL mechanism provided" );
goto cleanup;
}
if( backend_check_restrictions( op, rs, &op->orb_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, &op->orb_mech ) ) {
slap_sasl_reset(op->o_conn);
}
} else {
ber_dupbv(&op->o_conn->c_sasl_bind_mech, &op->orb_mech);
}
op->o_conn->c_sasl_bindop = op;
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
rs->sr_err = slap_sasl_bind( op, rs );
goto cleanup;
} else {
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
free( op->o_conn->c_sasl_bind_mech.bv_val );
BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
}
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_BVSTR( &op->orb_mech, "SIMPLE" );
if ( BER_BVISEMPTY( &op->orb_cred ) || BER_BVISEMPTY( &op->o_req_ndn ) ) {
rs->sr_err = LDAP_SUCCESS;
if( !BER_BVISEMPTY( &op->orb_cred ) &&
!( global_allows & SLAP_ALLOW_BIND_ANON_CRED ))
{
rs->sr_err = LDAP_INVALID_CREDENTIALS;
} else if ( !BER_BVISEMPTY( &op->o_req_ndn ) &&
!( 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, &op->orb_mech );
}
send_ldap_result( op, rs );
Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
op->o_protocol, 0, 0 );
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 );
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d simple bind(%s) disallowed\n",
op->o_protocol, op->o_req_ndn.bv_val, 0 );
goto cleanup;
}
} else {
rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
rs->sr_text = "unknown authentication method";
send_ldap_result( op, rs );
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d unknown authentication method (%d)\n",
op->o_protocol, op->orb_method, 0 );
goto cleanup;
}
if ( (op->o_bd = select_backend( &op->o_req_ndn, 0 )) == NULL ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
op->o_bd = bd;
send_ldap_result( op, rs );
goto cleanup;
}
if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
goto cleanup;
}
if( op->o_bd->be_bind ) {
op->o_conn->c_authz_cookie = NULL;
rs->sr_err = (op->o_bd->be_bind)( op, rs );
if ( rs->sr_err == 0 ) {
(void)fe_op_bind_success( op, rs );
} else if ( !BER_BVISNULL( &op->orb_edn ) ) {
free( op->orb_edn.bv_val );
BER_BVZERO( &op->orb_edn );
}
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported within naming context" );
}
cleanup:;
op->o_bd = bd;
return rs->sr_err;
}
int
fe_op_bind_success( Operation *op, SlapReply *rs )
{
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( !BER_BVISEMPTY( &op->orb_edn ) ) {
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( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
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,
"%s BIND dn=\"%s\" mech=%s ssf=0\n",
op->o_log_prefix,
op->o_conn->c_dn.bv_val, op->orb_mech.bv_val, 0, 0 );
Debug( LDAP_DEBUG_TRACE,
"do_bind: v%d bind: \"%s\" to \"%s\"\n",
op->o_protocol, op->o_req_dn.bv_val, op->o_conn->c_dn.bv_val );
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
send_ldap_result( op, rs );
return LDAP_SUCCESS;
}