config.c

/* config.c - ldap backend configuration file routine */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 2003-2007 The OpenLDAP Foundation.
 * Portions Copyright 1999-2003 Howard Chu.
 * Portions Copyright 2000-2003 Pierangelo Masarati.
 * 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 initially developed by the Howard Chu for inclusion
 * in OpenLDAP Software and subsequently enhanced by Pierangelo
 * Masarati.
 */

#include "portable.h"

#include <stdio.h>

#include <ac/string.h>
#include <ac/ctype.h>
#include <ac/socket.h>

#include "slap.h"
#include "config.h"
#include "back-ldap.h"
#include "lutil.h"
#include "ldif.h"
#undef ldap_debug
/* for advanced URL parsing */
#include "../../../libraries/libldap/ldap-int.h"

static SLAP_EXTOP_MAIN_FN ldap_back_exop_whoami;

static ConfigDriver ldap_back_cf_gen;

enum {
	LDAP_BACK_CFG_URI = 1,
	LDAP_BACK_CFG_TLS,
	LDAP_BACK_CFG_ACL_AUTHCDN,
	LDAP_BACK_CFG_ACL_PASSWD,
	LDAP_BACK_CFG_ACL_METHOD,
	LDAP_BACK_CFG_ACL_BIND,
	LDAP_BACK_CFG_IDASSERT_MODE,
	LDAP_BACK_CFG_IDASSERT_AUTHCDN,
	LDAP_BACK_CFG_IDASSERT_PASSWD,
	LDAP_BACK_CFG_IDASSERT_AUTHZFROM,
	LDAP_BACK_CFG_IDASSERT_METHOD,
	LDAP_BACK_CFG_IDASSERT_BIND,
	LDAP_BACK_CFG_REBIND,
	LDAP_BACK_CFG_CHASE,
	LDAP_BACK_CFG_T_F,
	LDAP_BACK_CFG_WHOAMI,
	LDAP_BACK_CFG_TIMEOUT,
	LDAP_BACK_CFG_IDLE_TIMEOUT,
	LDAP_BACK_CFG_CONN_TTL,
	LDAP_BACK_CFG_NETWORK_TIMEOUT,
	LDAP_BACK_CFG_VERSION,
	LDAP_BACK_CFG_SINGLECONN,
	LDAP_BACK_CFG_USETEMP,
	LDAP_BACK_CFG_CONNPOOLMAX,
	LDAP_BACK_CFG_CANCEL,
	LDAP_BACK_CFG_QUARANTINE,
	LDAP_BACK_CFG_REWRITE,

	LDAP_BACK_CFG_LAST
};

static ConfigTable ldapcfg[] = {
	{ "uri", "uri", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_URI,
		ldap_back_cf_gen, "( OLcfgDbAt:0.14 "
			"NAME 'olcDbURI' "
			"DESC 'URI (list) for remote DSA' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "tls", "what", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_TLS,
		ldap_back_cf_gen, "( OLcfgDbAt:3.1 "
			"NAME 'olcDbStartTLS' "
			"DESC 'StartTLS' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "acl-authcDN", "DN", 2, 2, 0,
		ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_ACL_AUTHCDN,
		ldap_back_cf_gen, "( OLcfgDbAt:3.2 "
			"NAME 'olcDbACLAuthcDn' "
			"DESC 'Remote ACL administrative identity' "
			"OBSOLETE "
			"SYNTAX OMsDN "
			"SINGLE-VALUE )",
		NULL, NULL },
	/* deprecated, will be removed; aliases "acl-authcDN" */
	{ "binddn", "DN", 2, 2, 0,
		ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_ACL_AUTHCDN,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "acl-passwd", "cred", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_ACL_PASSWD,
		ldap_back_cf_gen, "( OLcfgDbAt:3.3 "
			"NAME 'olcDbACLPasswd' "
			"DESC 'Remote ACL administrative identity credentials' "
			"OBSOLETE "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	/* deprecated, will be removed; aliases "acl-passwd" */
	{ "bindpw", "cred", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_ACL_PASSWD,
		ldap_back_cf_gen, NULL, NULL, NULL },
	/* deprecated, will be removed; aliases "acl-bind" */
	{ "acl-method", "args", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_ACL_METHOD,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "acl-bind", "args", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_ACL_BIND,
		ldap_back_cf_gen, "( OLcfgDbAt:3.4 "
			"NAME 'olcDbACLBind' "
			"DESC 'Remote ACL administrative identity auth bind configuration' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "idassert-authcDN", "DN", 2, 2, 0,
		ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHCDN,
		ldap_back_cf_gen, "( OLcfgDbAt:3.5 "
			"NAME 'olcDbIDAssertAuthcDn' "
			"DESC 'Remote Identity Assertion administrative identity' "
			"OBSOLETE "
			"SYNTAX OMsDN "
			"SINGLE-VALUE )",
		NULL, NULL },
	/* deprecated, will be removed; partially aliases "idassert-authcDN" */
	{ "proxyauthzdn", "DN", 2, 2, 0,
		ARG_DN|ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHCDN,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "idassert-passwd", "cred", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_PASSWD,
		ldap_back_cf_gen, "( OLcfgDbAt:3.6 "
			"NAME 'olcDbIDAssertPasswd' "
			"DESC 'Remote Identity Assertion administrative identity credentials' "
			"OBSOLETE "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	/* deprecated, will be removed; partially aliases "idassert-passwd" */
	{ "proxyauthzpw", "cred", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_PASSWD,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "idassert-bind", "args", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_BIND,
		ldap_back_cf_gen, "( OLcfgDbAt:3.7 "
			"NAME 'olcDbIDAssertBind' "
			"DESC 'Remote Identity Assertion administrative identity auth bind configuration' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "idassert-method", "args", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_METHOD,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "idassert-mode", "mode>|u:<user>|[dn:]<DN", 2, 0, 0,
		ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_MODE,
		ldap_back_cf_gen, "( OLcfgDbAt:3.8 "
			"NAME 'olcDbIDAssertMode' "
			"DESC 'Remote Identity Assertion mode' "
			"OBSOLETE "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE)",
		NULL, NULL },
	{ "idassert-authzFrom", "authzRule", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_IDASSERT_AUTHZFROM,
		ldap_back_cf_gen, "( OLcfgDbAt:3.9 "
			"NAME 'olcDbIDAssertAuthzFrom' "
			"DESC 'Remote Identity Assertion authz rules' "
			"SYNTAX OMsDirectoryString "
			"X-ORDERED 'VALUES' )",
		NULL, NULL },
	{ "rebind-as-user", "NO|yes", 1, 2, 0,
		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_REBIND,
		ldap_back_cf_gen, "( OLcfgDbAt:3.10 "
			"NAME 'olcDbRebindAsUser' "
			"DESC 'Rebind as user' "
			"SYNTAX OMsBoolean "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "chase-referrals", "YES|no", 2, 2, 0,
		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_CHASE,
		ldap_back_cf_gen, "( OLcfgDbAt:3.11 "
			"NAME 'olcDbChaseReferrals' "
			"DESC 'Chase referrals' "
			"SYNTAX OMsBoolean "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "t-f-support", "NO|yes|discover", 2, 2, 0,
		ARG_MAGIC|LDAP_BACK_CFG_T_F,
		ldap_back_cf_gen, "( OLcfgDbAt:3.12 "
			"NAME 'olcDbTFSupport' "
			"DESC 'Absolute filters support' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "proxy-whoami", "NO|yes", 1, 2, 0,
		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_WHOAMI,
		ldap_back_cf_gen, "( OLcfgDbAt:3.13 "
			"NAME 'olcDbProxyWhoAmI' "
			"DESC 'Proxy whoAmI exop' "
			"SYNTAX OMsBoolean "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "timeout", "timeout(list)", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_TIMEOUT,
		ldap_back_cf_gen, "( OLcfgDbAt:3.14 "
			"NAME 'olcDbTimeout' "
			"DESC 'Per-operation timeouts' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "idle-timeout", "timeout", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_IDLE_TIMEOUT,
		ldap_back_cf_gen, "( OLcfgDbAt:3.15 "
			"NAME 'olcDbIdleTimeout' "
			"DESC 'connection idle timeout' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "conn-ttl", "ttl", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_CONN_TTL,
		ldap_back_cf_gen, "( OLcfgDbAt:3.16 "
			"NAME 'olcDbConnTtl' "
			"DESC 'connection ttl' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "network-timeout", "timeout", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_NETWORK_TIMEOUT,
		ldap_back_cf_gen, "( OLcfgDbAt:3.17 "
			"NAME 'olcDbNetworkTimeout' "
			"DESC 'connection network timeout' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "protocol-version", "version", 2, 0, 0,
		ARG_MAGIC|ARG_INT|LDAP_BACK_CFG_VERSION,
		ldap_back_cf_gen, "( OLcfgDbAt:3.18 "
			"NAME 'olcDbProtocolVersion' "
			"DESC 'protocol version' "
			"SYNTAX OMsInteger "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "single-conn", "TRUE/FALSE", 2, 0, 0,
		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_SINGLECONN,
		ldap_back_cf_gen, "( OLcfgDbAt:3.19 "
			"NAME 'olcDbSingleConn' "
			"DESC 'cache a single connection per identity' "
			"SYNTAX OMsBoolean "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "cancel", "ABANDON|ignore|exop", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_CANCEL,
		ldap_back_cf_gen, "( OLcfgDbAt:3.20 "
			"NAME 'olcDbCancel' "
			"DESC 'abandon/ignore/exop operations when appropriate' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "quarantine", "retrylist", 2, 0, 0,
		ARG_MAGIC|LDAP_BACK_CFG_QUARANTINE,
		ldap_back_cf_gen, "( OLcfgDbAt:3.21 "
			"NAME 'olcDbQuarantine' "
			"DESC 'Quarantine database if connection fails and retry according to rule' "
			"SYNTAX OMsDirectoryString "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "use-temporary-conn", "TRUE/FALSE", 2, 0, 0,
		ARG_MAGIC|ARG_ON_OFF|LDAP_BACK_CFG_USETEMP,
		ldap_back_cf_gen, "( OLcfgDbAt:3.22 "
			"NAME 'olcDbUseTemporaryConn' "
			"DESC 'Use temporary connections if the cached one is busy' "
			"SYNTAX OMsBoolean "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "conn-pool-max", "<n>", 2, 0, 0,
		ARG_MAGIC|ARG_INT|LDAP_BACK_CFG_CONNPOOLMAX,
		ldap_back_cf_gen, "( OLcfgDbAt:3.23 "
			"NAME 'olcDbConnectionPoolMax' "
			"DESC 'Max size of privileged connections pool' "
			"SYNTAX OMsInteger "
			"SINGLE-VALUE )",
		NULL, NULL },
	{ "suffixmassage", "[virtual]> <real", 2, 3, 0,
		ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "map", "attribute|objectClass> [*|<local>] *|<remote", 3, 4, 0,
		ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ "rewrite", "<arglist>", 2, 4, STRLENOF( "rewrite" ),
		ARG_STRING|ARG_MAGIC|LDAP_BACK_CFG_REWRITE,
		ldap_back_cf_gen, NULL, NULL, NULL },
	{ NULL, NULL, 0, 0, 0, ARG_IGNORED,
		NULL, NULL, NULL, NULL }
};

static ConfigOCs ldapocs[] = {
	{ "( OLcfgDbOc:3.1 "
		"NAME 'olcLDAPConfig' "
		"DESC 'LDAP backend configuration' "
		"SUP olcDatabaseConfig "
		"MAY ( olcDbURI "
			"$ olcDbStartTLS "
			"$ olcDbACLAuthcDn "
			"$ olcDbACLPasswd "
			"$ olcDbACLBind "
			"$ olcDbIDAssertAuthcDn "
			"$ olcDbIDAssertPasswd "
			"$ olcDbIDAssertBind "
			"$ olcDbIDAssertMode "
			"$ olcDbIDAssertAuthzFrom "
			"$ olcDbRebindAsUser "
			"$ olcDbChaseReferrals "
			"$ olcDbTFSupport "
			"$ olcDbProxyWhoAmI "
			"$ olcDbTimeout "
			"$ olcDbIdleTimeout "
			"$ olcDbSingleConn "
			"$ olcDbCancel "
			"$ olcDbQuarantine "
			"$ olcDbUseTemporaryConn "
			"$ olcDbConnectionPoolMax "
		") )",
		 	Cft_Database, ldapcfg},
	{ NULL, 0, NULL }
};

static slap_verbmasks idassert_mode[] = {
	{ BER_BVC("self"),		LDAP_BACK_IDASSERT_SELF },
	{ BER_BVC("anonymous"),		LDAP_BACK_IDASSERT_ANONYMOUS },
	{ BER_BVC("none"),		LDAP_BACK_IDASSERT_NOASSERT },
	{ BER_BVC("legacy"),		LDAP_BACK_IDASSERT_LEGACY },
	{ BER_BVNULL,			0 }
};

static slap_verbmasks tls_mode[] = {
	{ BER_BVC( "propagate" ),	LDAP_BACK_F_TLS_PROPAGATE_MASK },
	{ BER_BVC( "try-propagate" ),	LDAP_BACK_F_PROPAGATE_TLS },
	{ BER_BVC( "start" ),		LDAP_BACK_F_TLS_USE_MASK },
	{ BER_BVC( "try-start" ),	LDAP_BACK_F_USE_TLS },
	{ BER_BVC( "ldaps" ),		LDAP_BACK_F_TLS_LDAPS },
	{ BER_BVC( "none" ),		LDAP_BACK_F_NONE },
	{ BER_BVNULL,			0 }
};

static slap_verbmasks t_f_mode[] = {
	{ BER_BVC( "yes" ),		LDAP_BACK_F_T_F },
	{ BER_BVC( "discover" ),	LDAP_BACK_F_T_F_DISCOVER },
	{ BER_BVC( "no" ),		LDAP_BACK_F_NONE },
	{ BER_BVNULL,			0 }
};

static slap_verbmasks cancel_mode[] = {
	{ BER_BVC( "ignore" ),		LDAP_BACK_F_CANCEL_IGNORE },
	{ BER_BVC( "exop" ),		LDAP_BACK_F_CANCEL_EXOP },
	{ BER_BVC( "exop-discover" ),	LDAP_BACK_F_CANCEL_EXOP_DISCOVER },
	{ BER_BVC( "abandon" ),		LDAP_BACK_F_CANCEL_ABANDON },
	{ BER_BVNULL,			0 }
};

/* see enum in slap.h */
static slap_cf_aux_table timeout_table[] = {
	{ BER_BVC("bind="),	SLAP_OP_BIND * sizeof( time_t ),	'u', 0, NULL },
	/* unbind makes no sense */
	{ BER_BVC("add="),	SLAP_OP_ADD * sizeof( time_t ),		'u', 0, NULL },
	{ BER_BVC("delete="),	SLAP_OP_DELETE * sizeof( time_t ),	'u', 0, NULL },
	{ BER_BVC("modrdn="),	SLAP_OP_MODRDN * sizeof( time_t ),	'u', 0, NULL },
	{ BER_BVC("modify="),	SLAP_OP_MODIFY * sizeof( time_t ),	'u', 0, NULL },
	{ BER_BVC("compare="),	SLAP_OP_COMPARE * sizeof( time_t ),	'u', 0, NULL },
#if 0	/* uses timelimit instead */
	{ BER_BVC("search="),	SLAP_OP_SEARCH * sizeof( time_t ),	'u', 0, NULL },
#endif
	/* abandon makes little sense */
#if 0	/* not implemented yet */
	{ BER_BVC("extended="),	SLAP_OP_EXTENDED * sizeof( time_t ),	'u', 0, NULL },
#endif
	{ BER_BVNULL, 0, 0, 0, NULL }
};

int
slap_retry_info_parse(
	char			*in,
	slap_retry_info_t 	*ri,
	char			*buf,
	ber_len_t		buflen )
{
	char			**retrylist = NULL;
	int			rc = 0;
	int			i;

	slap_str2clist( &retrylist, in, " ;" );
	if ( retrylist == NULL ) {
		return 1;
	}

	for ( i = 0; retrylist[ i ] != NULL; i++ )
		/* count */ ;

	ri->ri_interval = ch_calloc( sizeof( time_t ), i + 1 );
	ri->ri_num = ch_calloc( sizeof( int ), i + 1 );

	for ( i = 0; retrylist[ i ] != NULL; i++ ) {
		unsigned long	t;
		char		*sep = strchr( retrylist[ i ], ',' );

		if ( sep == NULL ) {
			snprintf( buf, buflen,
				"missing comma in retry pattern #%d \"%s\"",
				i, retrylist[ i ] );
			rc = 1;
			goto done;
		}

		*sep++ = '\0';

		if ( lutil_parse_time( retrylist[ i ], &t ) ) {
			snprintf( buf, buflen,
				"unable to parse interval #%d \"%s\"",
				i, retrylist[ i ] );
			rc = 1;
			goto done;
		}
		ri->ri_interval[ i ] = (time_t)t;

		if ( strcmp( sep, "+" ) == 0 ) {
			if ( retrylist[ i + 1 ] != NULL ) {
				snprintf( buf, buflen,
					"extra cruft after retry pattern "
					"#%d \"%s,+\" with \"forever\" mark",
					i, retrylist[ i ] );
				rc = 1;
				goto done;
			}
			ri->ri_num[ i ] = SLAP_RETRYNUM_FOREVER;
			
		} else if ( lutil_atoi( &ri->ri_num[ i ], sep ) ) {
			snprintf( buf, buflen,
				"unable to parse retry num #%d \"%s\"",
				i, sep );
			rc = 1;
			goto done;
		}
	}

	ri->ri_num[ i ] = SLAP_RETRYNUM_TAIL;

	ri->ri_idx = 0;
	ri->ri_count = 0;
	ri->ri_last = (time_t)(-1);

done:;
	ldap_charray_free( retrylist );

	if ( rc ) {
		slap_retry_info_destroy( ri );
	}

	return rc;
}

int
slap_retry_info_unparse(
	slap_retry_info_t	*ri,
	struct berval		*bvout )
{
	int		i;
	char		buf[ BUFSIZ * 2 ],
			*ptr = buf;
	struct berval	bv = BER_BVNULL;

	assert( ri != NULL );
	assert( bvout != NULL );

	BER_BVZERO( bvout );

#define WHATSLEFT	( sizeof( buf ) - ( ptr - buf ) )

	for ( i = 0; ri->ri_num[ i ] != SLAP_RETRYNUM_TAIL; i++ ) {
		if ( i > 0 ) {
			if ( WHATSLEFT <= 1 ) {
				return 1;
			}
			*ptr++ = ';';
		}

		if ( lutil_unparse_time( ptr, WHATSLEFT, (long)ri->ri_interval[i] ) ) {
			return 1;
		}
		ptr += strlen( ptr );

		if ( WHATSLEFT <= 1 ) {
			return 1;
		}
		*ptr++ = ',';

		if ( ri->ri_num[i] == SLAP_RETRYNUM_FOREVER ) {
			if ( WHATSLEFT <= 1 ) {
				return 1;
			}
			*ptr++ = '+';

		} else {
			ptr += snprintf( ptr, WHATSLEFT, "%d", ri->ri_num[i] );
			if ( WHATSLEFT <= 0 ) {
				return 1;
			}
		}
	}

	bv.bv_val = buf;
	bv.bv_len = ptr - buf;

	ber_dupbv( bvout, &bv );

	return 0;
}

void
slap_retry_info_destroy(
	slap_retry_info_t	*ri )
{
	assert( ri != NULL );

	assert( ri->ri_interval != NULL );
	ch_free( ri->ri_interval );
	ri->ri_interval = NULL;

	assert( ri->ri_num != NULL );
	ch_free( ri->ri_num );
	ri->ri_num = NULL;
}

static int
slap_idassert_authzfrom_parse( ConfigArgs *c, slap_idassert_t *si )
{
	struct berval	bv;
	struct berval	in;
	int		rc;

 	if ( strcmp( c->argv[ 1 ], "*" ) == 0
 		|| strcmp( c->argv[ 1 ], "dn:*" ) == 0
 		|| strcasecmp( c->argv[ 1 ], "dn.regex:.*" ) == 0 )
 	{
 		if ( si->si_authz != NULL ) {
 			snprintf( c->msg, sizeof( c->msg ),
 				"\"idassert-authzFrom <authz>\": "
 				"\"%s\" conflicts with existing authz rules",
 				c->argv[ 1 ] );
 			Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
 			return 1;
 		}
 
 		si->si_flags |= LDAP_BACK_AUTH_AUTHZ_ALL;
 
 		return 0;
 
 	} else if ( ( si->si_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) ) {
  		snprintf( c->msg, sizeof( c->msg ),
  			"\"idassert-authzFrom <authz>\": "
 			"\"<authz>\" conflicts with \"*\"" );
  		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
  		return 1;
  	}
 	
 	ber_str2bv( c->argv[ 1 ], 0, 0, &in );
 	rc = authzNormalize( 0, NULL, NULL, &in, &bv, NULL );
 	if ( rc != LDAP_SUCCESS ) {
 		snprintf( c->msg, sizeof( c->msg ),
 			"\"idassert-authzFrom <authz>\": "
 			"invalid syntax" );
 		Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
 		return 1;
 	}
  
	ber_bvarray_add( &si->si_authz, &bv );

	return 0;
}

static int
slap_idassert_parse( ConfigArgs *c, slap_idassert_t *si )
{
	int		i;

	for ( i = 1; i < c->argc; i++ ) {
		if ( strncasecmp( c->argv[ i ], "mode=", STRLENOF( "mode=" ) ) == 0 ) {
			char	*argvi = c->argv[ i ] + STRLENOF( "mode=" );
			int	j;

			j = verb_to_mask( argvi, idassert_mode );
			if ( BER_BVISNULL( &idassert_mode[ j ].word ) ) {
				snprintf( c->msg, sizeof( c->msg ),
					"\"idassert-bind <args>\": "
					"unknown mode \"%s\"",
					argvi );
				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
				return 1;
			}

			si->si_mode = idassert_mode[ j ].mask;

		} else if ( strncasecmp( c->argv[ i ], "authz=", STRLENOF( "authz=" ) ) == 0 ) {
			char	*argvi = c->argv[ i ] + STRLENOF( "authz=" );

			if ( strcasecmp( argvi, "native" ) == 0 ) {
				if ( si->si_bc.sb_method != LDAP_AUTH_SASL ) {
					snprintf( c->msg, sizeof( c->msg ),
						"\"idassert-bind <args>\": "
						"authz=\"native\" incompatible "
						"with auth method" );
					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
					return 1;
				}
				si->si_flags |= LDAP_BACK_AUTH_NATIVE_AUTHZ;

			} else if ( strcasecmp( argvi, "proxyAuthz" ) == 0 ) {
				si->si_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;

			} else {
				snprintf( c->msg, sizeof( c->msg ),
					"\"idassert-bind <args>\": "
					"unknown authz \"%s\"",
					argvi );
				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
				return 1;
			}

		} else if ( strncasecmp( c->argv[ i ], "flags=", STRLENOF( "flags=" ) ) == 0 ) {
			char	*argvi = c->argv[ i ] + STRLENOF( "flags=" );
			char	**flags = ldap_str2charray( argvi, "," );
			int	j, err = 0;

			if ( flags == NULL ) {
				snprintf( c->msg, sizeof( c->msg ),
					"\"idassert-bind <args>\": "
					"unable to parse flags \"%s\"",
					argvi );
				Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
				return 1;
			}

			for ( j = 0; flags[ j ] != NULL; j++ ) {

				if ( strcasecmp( flags[ j ], "override" ) == 0 ) {
					si->si_flags |= LDAP_BACK_AUTH_OVERRIDE;

				} else if ( strcasecmp( flags[ j ], "prescriptive" ) == 0 ) {
					si->si_flags |= LDAP_BACK_AUTH_PRESCRIPTIVE;

				} else if ( strcasecmp( flags[ j ], "non-prescriptive" ) == 0 ) {
					si->si_flags &= ( ~LDAP_BACK_AUTH_PRESCRIPTIVE );

				} else if ( strcasecmp( flags[ j ], "obsolete-proxy-authz" ) == 0 ) {
					if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
						Debug( LDAP_DEBUG_ANY,
                                      		 		"%s: \"obsolete-proxy-authz\" flag "
                                      		 		"in \"idassert-mode <args>\" "
                                      		 		"incompatible with previously issued \"obsolete-encoding-workaround\" flag.\n",
                                      	 			c->log, 0, 0 );
						err = 1;
						break;

					} else {
						si->si_flags |= LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ;
					}

				} else if ( strcasecmp( flags[ j ], "obsolete-encoding-workaround" ) == 0 ) {
					if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
						Debug( LDAP_DEBUG_ANY,
                                      	 			"%s: \"obsolete-encoding-workaround\" flag "
                                       			"in \"idassert-mode <args>\" "
                                       			"incompatible with previously issued \"obsolete-proxy-authz\" flag.\n",
                                       			c->log, 0, 0 );
						err = 1;
						break;

					} else {
						si->si_flags |= LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND;
					}

				} else {
					snprintf( c->msg, sizeof( c->msg ),
						"\"idassert-bind <args>\": "
						"unknown flag \"%s\"",
						flags[ j ] );
					Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
					err = 1;
					break;
				}
			}

			ldap_charray_free( flags );
			if ( err ) {
				return 1;
			}

		} else if ( bindconf_parse( c->argv[ i ], &si->si_bc ) ) {
			return 1;
		}
	}
	bindconf_tls_defaults( &si->si_bc );

	return 0;
}

/* NOTE: temporary, until back-meta is ported to back-config */
int
slap_idassert_authzfrom_parse_cf( const char *fname, int lineno, const char *arg, slap_idassert_t *si )
{
	ConfigArgs	c = { 0 };
	char		*argv[ 3 ];

	snprintf( c.log, sizeof( c.log ), "%s: line %d", fname, lineno );
	c.argc = 2;
	c.argv = argv;
	argv[ 0 ] = "idassert-authzFrom";
	argv[ 1 ] = (char *)arg;
	argv[ 2 ] = NULL;

	return slap_idassert_authzfrom_parse( &c, si );
}

int
slap_idassert_parse_cf( const char *fname, int lineno, int argc, char *argv[], slap_idassert_t *si )
{
	ConfigArgs	c = { 0 };

	snprintf( c.log, sizeof( c.log ), "%s: line %d", fname, lineno );
	c.argc = argc;
	c.argv = argv;

	return slap_idassert_parse( &c, si );
}

static int
ldap_back_cf_gen( ConfigArgs *c )
{
	ldapinfo_t	*li = ( ldapinfo_t * )c->be->be_private;
	int		rc = 0;
	int		i;

	if ( c->op == SLAP_CONFIG_EMIT ) {
		struct berval	bv = BER_BVNULL;

		if ( li == NULL ) {
			return 1;
		}

		switch( c->type ) {
		case LDAP_BACK_CFG_URI:
			if ( li->li_uri != NULL ) {
				struct berval	bv, bv2;

				ber_str2bv( li->li_uri, 0, 0, &bv );
				bv2.bv_len = bv.bv_len + STRLENOF( "\"\"" );
				bv2.bv_val = ch_malloc( bv2.bv_len + 1 );
				snprintf( bv2.bv_val, bv2.bv_len + 1,
					"\"%s\"", bv.bv_val );
				ber_bvarray_add( &c->rvalue_vals, &bv2 );

			} else {
				rc = 1;
			}
			break;

		case LDAP_BACK_CFG_TLS: {
			struct berval bc = BER_BVNULL, bv2;
			enum_to_verb( tls_mode, ( li->li_flags & LDAP_BACK_F_TLS_MASK ), &bv );
			assert( !BER_BVISNULL( &bv ) );
			bindconf_tls_unparse( &li->li_tls, &bc );

			if ( !BER_BVISEMPTY( &bc )) {
				bv2.bv_len = bv.bv_len + bc.bv_len + 1;
				bv2.bv_val = ch_malloc( bv2.bv_len + 1 );
				strcpy( bv2.bv_val, bv.bv_val );
				bv2.bv_val[bv.bv_len] = ' ';
				strcpy( &bv2.bv_val[bv.bv_len + 1], bc.bv_val );
				ber_bvarray_add( &c->rvalue_vals, &bv2 );

			} else {
				value_add_one( &c->rvalue_vals, &bv );
			}
			ber_memfree( bc.bv_val );
			}
			break;

		case LDAP_BACK_CFG_ACL_AUTHCDN:
		case LDAP_BACK_CFG_ACL_PASSWD:
		case LDAP_BACK_CFG_ACL_METHOD:
			/* handled by LDAP_BACK_CFG_ACL_BIND */
			rc = 1;
			break;

		case LDAP_BACK_CFG_ACL_BIND: {
			int	i;

			if ( li->li_acl_authmethod == LDAP_AUTH_NONE ) {
				return 1;
			}

			bindconf_unparse( &li->li_acl, &bv );

			for ( i = 0; isspace( (unsigned char) bv.bv_val[ i ] ); i++ )
				/* count spaces */ ;

			if ( i ) {
				bv.bv_len -= i;
				AC_MEMCPY( bv.bv_val, &bv.bv_val[ i ],
					bv.bv_len + 1 );
			}

			ber_bvarray_add( &c->rvalue_vals, &bv );
			break;
		}

		case LDAP_BACK_CFG_IDASSERT_MODE:
		case LDAP_BACK_CFG_IDASSERT_AUTHCDN:
		case LDAP_BACK_CFG_IDASSERT_PASSWD:
		case LDAP_BACK_CFG_IDASSERT_METHOD:
			/* handled by LDAP_BACK_CFG_IDASSERT_BIND */
			rc = 1;
			break;

		case LDAP_BACK_CFG_IDASSERT_AUTHZFROM: {
			int		i;

			if ( li->li_idassert_authz == NULL ) {
				if ( ( li->li_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) ) {
					BER_BVSTR( &bv, "*" );
					value_add_one( &c->rvalue_vals, &bv );

				} else {
					rc = 1;
				}
				break;
			}

			for ( i = 0; !BER_BVISNULL( &li->li_idassert_authz[ i ] ); i++ )
			{
				value_add_one( &c->rvalue_vals, &li->li_idassert_authz[ i ] );
			}
			break;
		}

		case LDAP_BACK_CFG_IDASSERT_BIND: {
			int		i;
			struct berval	bc = BER_BVNULL;
			char		*ptr;

			if ( li->li_idassert_authmethod == LDAP_AUTH_NONE ) {
				return 1;
			}

			if ( li->li_idassert_authmethod != LDAP_AUTH_NONE ) {
				ber_len_t	len;

				switch ( li->li_idassert_mode ) {
				case LDAP_BACK_IDASSERT_OTHERID:
				case LDAP_BACK_IDASSERT_OTHERDN:
					break;

				default: {
					struct berval	mode = BER_BVNULL;

					enum_to_verb( idassert_mode, li->li_idassert_mode, &mode );
					if ( BER_BVISNULL( &mode ) ) {
						/* there's something wrong... */
						assert( 0 );
						rc = 1;
	
					} else {
						bv.bv_len = STRLENOF( "mode=" ) + mode.bv_len;
						bv.bv_val = ch_malloc( bv.bv_len + 1 );

						ptr = lutil_strcopy( bv.bv_val, "mode=" );
						ptr = lutil_strcopy( ptr, mode.bv_val );
					}
					break;
				}
				}

				if ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) {
					len = bv.bv_len + STRLENOF( "authz=native" );

					if ( !BER_BVISEMPTY( &bv ) ) {
						len += STRLENOF( " " );
					}

					bv.bv_val = ch_realloc( bv.bv_val, len + 1 );

					ptr = &bv.bv_val[ bv.bv_len ];

					if ( !BER_BVISEMPTY( &bv ) ) {
						ptr = lutil_strcopy( ptr, " " );
					}

					(void)lutil_strcopy( ptr, "authz=native" );
				}

				len = bv.bv_len + STRLENOF( "flags=non-prescriptive,override,obsolete-encoding-workaround" );
				/* flags */
				if ( !BER_BVISEMPTY( &bv ) ) {
					len += STRLENOF( " " );
				}

				bv.bv_val = ch_realloc( bv.bv_val, len + 1 );

				ptr = &bv.bv_val[ bv.bv_len ];

				if ( !BER_BVISEMPTY( &bv ) ) {
					ptr = lutil_strcopy( ptr, " " );
				}

				ptr = lutil_strcopy( ptr, "flags=" );

				if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
					ptr = lutil_strcopy( ptr, "prescriptive" );
				} else {
					ptr = lutil_strcopy( ptr, "non-prescriptive" );
				}

				if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
					ptr = lutil_strcopy( ptr, ",override" );
				}

				if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
					ptr = lutil_strcopy( ptr, ",obsolete-proxy-authz" );

				} else if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
					ptr = lutil_strcopy( ptr, ",obsolete-encoding-workaround" );
				}

				bv.bv_len = ( ptr - bv.bv_val );
				/* end-of-flags */
			}

			bindconf_unparse( &li->li_idassert.si_bc, &bc );

			if ( !BER_BVISNULL( &bv ) ) {
				ber_len_t	len = bv.bv_len + bc.bv_len;

				bv.bv_val = ch_realloc( bv.bv_val, len + 1 );

				assert( bc.bv_val[ 0 ] == ' ' );

				ptr = lutil_strcopy( &bv.bv_val[ bv.bv_len ], bc.bv_val );
				free( bc.bv_val );
				bv.bv_len = ptr - bv.bv_val;

			} else {
				for ( i = 0; isspace( (unsigned char) bc.bv_val[ i ] ); i++ )
					/* count spaces */ ;

				if ( i ) {
					bc.bv_len -= i;
					AC_MEMCPY( bc.bv_val, &bc.bv_val[ i ], bc.bv_len + 1 );
				}

				bv = bc;
			}
			
			ber_bvarray_add( &c->rvalue_vals, &bv );

			break;
		}

		case LDAP_BACK_CFG_REBIND:
			c->value_int = LDAP_BACK_SAVECRED( li );
			break;

		case LDAP_BACK_CFG_CHASE:
			c->value_int = LDAP_BACK_CHASE_REFERRALS( li );
			break;

		case LDAP_BACK_CFG_T_F:
			enum_to_verb( t_f_mode, (li->li_flags & LDAP_BACK_F_T_F_MASK2), &bv );
			if ( BER_BVISNULL( &bv ) ) {
				/* there's something wrong... */
				assert( 0 );
				rc = 1;

			} else {
				value_add_one( &c->rvalue_vals, &bv );
			}
			break;