Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1335 insertions, 0 deletions

diff --git a/libraries/libldap/cyrus.c b/libraries/libldap/cyrus.c
new file mode 100644
index 0000000..cc925d3
--- /dev/null
+++ b/libraries/libldap/cyrus.c
@@ -0,0 +1,1335 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include "ldap-int.h"
+
+#ifdef HAVE_CYRUS_SASL
+
+#include <stdio.h>
+
+#include <ac/socket.h>
+#include <ac/stdlib.h>
+#include <ac/string.h>
+#include <ac/time.h>
+#include <ac/errno.h>
+#include <ac/ctype.h>
+#include <ac/unistd.h>
+
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+
+#ifndef INT_MAX
+#define	INT_MAX	2147483647	/* 32 bit signed max */
+#endif
+
+#if !defined(HOST_NAME_MAX) && defined(_POSIX_HOST_NAME_MAX)
+#define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
+#endif
+
+#ifdef HAVE_SASL_SASL_H
+#include <sasl/sasl.h>
+#else
+#include <sasl.h>
+#endif
+
+#if SASL_VERSION_MAJOR >= 2
+#define SASL_CONST const
+#else
+#define SASL_CONST
+#endif
+
+/*
+* Various Cyrus SASL related stuff.
+*/
+
+static const sasl_callback_t client_callbacks[] = {
+#ifdef SASL_CB_GETREALM
+	{ SASL_CB_GETREALM, NULL, NULL },
+#endif
+	{ SASL_CB_USER, NULL, NULL },
+	{ SASL_CB_AUTHNAME, NULL, NULL },
+	{ SASL_CB_PASS, NULL, NULL },
+	{ SASL_CB_ECHOPROMPT, NULL, NULL },
+	{ SASL_CB_NOECHOPROMPT, NULL, NULL },
+	{ SASL_CB_LIST_END, NULL, NULL }
+};
+
+/*
+ * ldap_int_initialize is responsible for calling this only once.
+ */
+int ldap_int_sasl_init( void )
+{
+#ifdef HAVE_SASL_VERSION
+	/* stringify the version number, sasl.h doesn't do it for us */
+#define VSTR0(maj, min, pat)	#maj "." #min "." #pat
+#define VSTR(maj, min, pat)	VSTR0(maj, min, pat)
+#define SASL_VERSION_STRING	VSTR(SASL_VERSION_MAJOR, SASL_VERSION_MINOR, \
+				SASL_VERSION_STEP)
+	{ int rc;
+	sasl_version( NULL, &rc );
+	if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
+		(rc & 0xffff) < SASL_VERSION_STEP) {
+		char version[sizeof("xxx.xxx.xxxxx")];
+		sprintf( version, "%u.%d.%d", (unsigned)rc >> 24, (rc >> 16) & 0xff,
+			rc & 0xffff );
+
+		Debug1( LDAP_DEBUG_ANY,
+		"ldap_int_sasl_init: SASL library version mismatch:"
+		" expected " SASL_VERSION_STRING ","
+		" got %s\n", version );
+		return -1;
+	}
+	}
+#endif
+
+/* SASL 2 takes care of its own memory completely internally */
+#if SASL_VERSION_MAJOR < 2 && !defined(CSRIMALLOC)
+	sasl_set_alloc(
+		ber_memalloc,
+		ber_memcalloc,
+		ber_memrealloc,
+		ber_memfree );
+#endif /* CSRIMALLOC */
+
+#ifdef LDAP_R_COMPILE
+	sasl_set_mutex(
+		ldap_pvt_sasl_mutex_new,
+		ldap_pvt_sasl_mutex_lock,
+		ldap_pvt_sasl_mutex_unlock,    
+		ldap_pvt_sasl_mutex_dispose );    
+#endif
+
+	if ( sasl_client_init( NULL ) == SASL_OK ) {
+		return 0;
+	}
+
+#if SASL_VERSION_MAJOR < 2
+	/* A no-op to make sure we link with Cyrus 1.5 */
+	sasl_client_auth( NULL, NULL, NULL, 0, NULL, NULL );
+#endif
+	return -1;
+}
+
+static void
+sb_sasl_cyrus_init(
+	struct sb_sasl_generic_data *p,
+	ber_len_t *min_send,
+	ber_len_t *max_send,
+	ber_len_t *max_recv)
+{
+	sasl_conn_t *sasl_context = (sasl_conn_t *)p->ops_private;
+	ber_len_t maxbuf;
+
+	sasl_getprop( sasl_context, SASL_MAXOUTBUF,
+		      (SASL_CONST void **)(char *) &maxbuf );
+
+	*min_send = SASL_MIN_BUFF_SIZE;
+	*max_send = maxbuf;
+	*max_recv = SASL_MAX_BUFF_SIZE;
+}
+
+static ber_int_t
+sb_sasl_cyrus_encode(
+	struct sb_sasl_generic_data *p,
+	unsigned char *buf,
+	ber_len_t len,
+	Sockbuf_Buf *dst)
+{
+	sasl_conn_t *sasl_context = (sasl_conn_t *)p->ops_private;
+	ber_int_t ret;
+	unsigned tmpsize = dst->buf_size;
+
+	ret = sasl_encode( sasl_context, (char *)buf, len,
+			   (SASL_CONST char **)&dst->buf_base,
+			   &tmpsize );
+
+	dst->buf_size = tmpsize;
+	dst->buf_end = dst->buf_size;
+
+	if ( ret != SASL_OK ) {
+		ber_log_printf( LDAP_DEBUG_ANY, p->sbiod->sbiod_sb->sb_debug,
+				"sb_sasl_cyrus_encode: failed to encode packet: %s\n",
+				sasl_errstring( ret, NULL, NULL ) );
+		return -1;
+	}
+
+	return 0;
+}
+
+static ber_int_t
+sb_sasl_cyrus_decode(
+	struct sb_sasl_generic_data *p,
+	const Sockbuf_Buf *src,
+	Sockbuf_Buf *dst)
+{
+	sasl_conn_t *sasl_context = (sasl_conn_t *)p->ops_private;
+	ber_int_t ret;
+	unsigned tmpsize = dst->buf_size;
+
+	ret = sasl_decode( sasl_context,
+			   src->buf_base, src->buf_end,
+			   (SASL_CONST char **)&dst->buf_base,
+			   (unsigned *)&tmpsize );
+
+
+	dst->buf_size = tmpsize;
+	dst->buf_end = dst->buf_size;
+
+	if ( ret != SASL_OK ) {
+		ber_log_printf( LDAP_DEBUG_ANY, p->sbiod->sbiod_sb->sb_debug,
+				"sb_sasl_cyrus_decode: failed to decode packet: %s\n",
+				sasl_errstring( ret, NULL, NULL ) );
+		return -1;
+	}
+
+	return 0;
+}
+
+static void
+sb_sasl_cyrus_reset_buf(
+	struct sb_sasl_generic_data *p,
+	Sockbuf_Buf *buf)
+{
+#if SASL_VERSION_MAJOR >= 2
+	ber_pvt_sb_buf_init( buf );
+#else
+	ber_pvt_sb_buf_destroy( buf );
+#endif
+}
+
+static void
+sb_sasl_cyrus_fini(
+	struct sb_sasl_generic_data *p)
+{
+#if SASL_VERSION_MAJOR >= 2
+	/*
+	 * SASLv2 encode/decode buffers are managed by
+	 * libsasl2. Ensure they are not freed by liblber.
+	 */
+	p->buf_in.buf_base = NULL;
+	p->buf_out.buf_base = NULL;
+#endif
+}
+
+static const struct sb_sasl_generic_ops sb_sasl_cyrus_ops = {
+	sb_sasl_cyrus_init,
+	sb_sasl_cyrus_encode,
+	sb_sasl_cyrus_decode,
+	sb_sasl_cyrus_reset_buf,
+	sb_sasl_cyrus_fini
+ };
+
+int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
+{
+	struct sb_sasl_generic_install install_arg;
+
+	install_arg.ops		= &sb_sasl_cyrus_ops;
+	install_arg.ops_private = ctx_arg;
+
+	return ldap_pvt_sasl_generic_install( sb, &install_arg );
+}
+
+void ldap_pvt_sasl_remove( Sockbuf *sb )
+{
+	ldap_pvt_sasl_generic_remove( sb );
+}
+
+static int
+sasl_err2ldap( int saslerr )
+{
+	int rc;
+
+	/* map SASL errors to LDAP API errors returned by:
+	 *	sasl_client_new()
+	 *		SASL_OK, SASL_NOMECH, SASL_NOMEM
+	 *	sasl_client_start()
+	 *		SASL_OK, SASL_NOMECH, SASL_NOMEM, SASL_INTERACT
+	 *	sasl_client_step()
+	 *		SASL_OK, SASL_INTERACT, SASL_BADPROT, SASL_BADSERV
+	 */
+
+	switch (saslerr) {
+		case SASL_CONTINUE:
+			rc = LDAP_MORE_RESULTS_TO_RETURN;
+			break;
+		case SASL_INTERACT:
+			rc = LDAP_LOCAL_ERROR;
+			break;
+		case SASL_OK:
+			rc = LDAP_SUCCESS;
+			break;
+		case SASL_NOMEM:
+			rc = LDAP_NO_MEMORY;
+			break;
+		case SASL_NOMECH:
+			rc = LDAP_AUTH_UNKNOWN;
+			break;
+		case SASL_BADPROT:
+			rc = LDAP_DECODING_ERROR;
+			break;
+		case SASL_BADSERV:
+			rc = LDAP_AUTH_UNKNOWN;
+			break;
+
+		/* other codes */
+		case SASL_BADAUTH:
+			rc = LDAP_AUTH_UNKNOWN;
+			break;
+		case SASL_NOAUTHZ:
+			rc = LDAP_PARAM_ERROR;
+			break;
+		case SASL_FAIL:
+			rc = LDAP_LOCAL_ERROR;
+			break;
+		case SASL_TOOWEAK:
+		case SASL_ENCRYPT:
+			rc = LDAP_AUTH_UNKNOWN;
+			break;
+		default:
+			rc = LDAP_LOCAL_ERROR;
+			break;
+	}
+
+	assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
+	return rc;
+}
+
+int
+ldap_int_sasl_open(
+	LDAP *ld, 
+	LDAPConn *lc,
+	const char * host )
+{
+	int rc;
+	sasl_conn_t *ctx;
+
+	assert( lc->lconn_sasl_authctx == NULL );
+
+	if ( host == NULL ) {
+		ld->ld_errno = LDAP_LOCAL_ERROR;
+		return ld->ld_errno;
+	}
+
+#if SASL_VERSION_MAJOR >= 2
+	rc = sasl_client_new( "ldap", host, NULL, NULL,
+		client_callbacks, 0, &ctx );
+#else
+	rc = sasl_client_new( "ldap", host, client_callbacks,
+		SASL_SECURITY_LAYER, &ctx );
+#endif
+
+	if ( rc != SASL_OK ) {
+		ld->ld_errno = sasl_err2ldap( rc );
+		return ld->ld_errno;
+	}
+
+	Debug1( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: host=%s\n",
+		host );
+
+	lc->lconn_sasl_authctx = ctx;
+
+	return LDAP_SUCCESS;
+}
+
+int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
+{
+	sasl_conn_t *ctx = lc->lconn_sasl_authctx;
+
+	if( ctx != NULL ) {
+		sasl_dispose( &ctx );
+		if ( lc->lconn_sasl_sockctx &&
+			lc->lconn_sasl_authctx != lc->lconn_sasl_sockctx ) {
+			ctx = lc->lconn_sasl_sockctx;
+			sasl_dispose( &ctx );
+		}
+		lc->lconn_sasl_sockctx = NULL;
+		lc->lconn_sasl_authctx = NULL;
+	}
+	if( lc->lconn_sasl_cbind ) {
+		ldap_memfree( lc->lconn_sasl_cbind );
+		lc->lconn_sasl_cbind = NULL;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+int ldap_pvt_sasl_cbinding_parse( const char *arg )
+{
+	int i = -1;
+
+	if ( strcasecmp(arg, "none") == 0 )
+		i = LDAP_OPT_X_SASL_CBINDING_NONE;
+	else if ( strcasecmp(arg, "tls-unique") == 0 )
+		i = LDAP_OPT_X_SASL_CBINDING_TLS_UNIQUE;
+	else if ( strcasecmp(arg, "tls-endpoint") == 0 )
+		i = LDAP_OPT_X_SASL_CBINDING_TLS_ENDPOINT;
+
+	return i;
+}
+
+void *ldap_pvt_sasl_cbinding( void *ssl, int type, int is_server )
+{
+#if defined(SASL_CHANNEL_BINDING) && defined(HAVE_TLS)
+	char unique_prefix[] = "tls-unique:";
+	char endpoint_prefix[] = "tls-server-end-point:";
+	char cbinding[ 64 ];
+	struct berval cbv = { 64, cbinding };
+	void *cb_data; /* used since cb->data is const* */
+	sasl_channel_binding_t *cb;
+	char *prefix;
+	int plen;
+
+	switch (type) {
+	case LDAP_OPT_X_SASL_CBINDING_NONE:
+		return NULL;
+	case LDAP_OPT_X_SASL_CBINDING_TLS_UNIQUE:
+		if ( !ldap_pvt_tls_get_unique( ssl, &cbv, is_server ))
+			return NULL;
+		prefix = unique_prefix;
+		plen = sizeof(unique_prefix) -1;
+		break;
+	case LDAP_OPT_X_SASL_CBINDING_TLS_ENDPOINT:
+		if ( !ldap_pvt_tls_get_endpoint( ssl, &cbv, is_server ))
+			return NULL;
+		prefix = endpoint_prefix;
+		plen = sizeof(endpoint_prefix) -1;
+		break;
+	default:
+		return NULL;
+	}
+
+	cb = ldap_memalloc( sizeof(*cb) + plen + cbv.bv_len );
+	cb->len = plen + cbv.bv_len;
+	cb->data = cb_data = cb+1;
+	memcpy( cb_data, prefix, plen );
+	memcpy( cb_data + plen, cbv.bv_val, cbv.bv_len );
+	cb->name = "ldap";
+	cb->critical = 0;
+
+	return cb;
+#else
+	return NULL;
+#endif
+}
+
+int
+ldap_int_sasl_bind(
+	LDAP			*ld,
+	const char		*dn,
+	const char		*mechs,
+	LDAPControl		**sctrls,
+	LDAPControl		**cctrls,
+	unsigned		flags,
+	LDAP_SASL_INTERACT_PROC *interact,
+	void			*defaults,
+	LDAPMessage		*result,
+	const char		**rmech,
+	int				*msgid )
+{
+	const char		*mech;
+	sasl_ssf_t		*ssf;
+	sasl_conn_t		*ctx;
+	sasl_interact_t *prompts = NULL;
+	struct berval	ccred = BER_BVNULL;
+	int saslrc, rc;
+	unsigned credlen;
+#if !defined(_WIN32)
+	char my_hostname[HOST_NAME_MAX + 1];
+#endif
+	int free_saslhost = 0;
+
+	Debug1( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
+		mechs ? mechs : "<null>" );
+
+	/* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
+	if (ld->ld_version < LDAP_VERSION3) {
+		ld->ld_errno = LDAP_NOT_SUPPORTED;
+		return ld->ld_errno;
+	}
+
+	/* Starting a Bind */
+	if ( !result ) {
+		const char *pmech = NULL;
+		sasl_conn_t	*oldctx;
+		ber_socket_t		sd;
+		void	*ssl;
+
+		rc = 0;
+		LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
+		ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
+
+		if ( sd == AC_SOCKET_INVALID || !ld->ld_defconn ) {
+			/* not connected yet */
+
+			rc = ldap_open_defconn( ld );
+
+			if ( rc == 0 ) {
+				ber_sockbuf_ctrl( ld->ld_defconn->lconn_sb,
+					LBER_SB_OPT_GET_FD, &sd );
+
+				if( sd == AC_SOCKET_INVALID ) {
+					ld->ld_errno = LDAP_LOCAL_ERROR;
+					rc = ld->ld_errno;
+				}
+			}
+		}
+		if ( rc == 0 && ld->ld_defconn &&
+			ld->ld_defconn->lconn_status == LDAP_CONNST_CONNECTING ) {
+			rc = ldap_int_check_async_open( ld, sd );
+		}
+		LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
+		if( rc != 0 ) return ld->ld_errno;
+
+		oldctx = ld->ld_defconn->lconn_sasl_authctx;
+
+		/* If we already have an authentication context, clear it out */
+		if( oldctx ) {
+			if ( oldctx != ld->ld_defconn->lconn_sasl_sockctx ) {
+				sasl_dispose( &oldctx );
+			}
+			ld->ld_defconn->lconn_sasl_authctx = NULL;
+		}
+
+		{
+			char *saslhost;
+			int nocanon = (int)LDAP_BOOL_GET( &ld->ld_options,
+				LDAP_BOOL_SASL_NOCANON );
+
+			/* If we don't need to canonicalize just use the host
+			 * from the LDAP URI.
+			 * Always use the result of gethostname() for LDAPI.
+			 * Skip for Windows which doesn't support LDAPI.
+			 */
+#if !defined(_WIN32)
+			if (ld->ld_defconn->lconn_server->lud_scheme != NULL &&
+			    strcmp("ldapi", ld->ld_defconn->lconn_server->lud_scheme) == 0) {
+				rc = gethostname(my_hostname, HOST_NAME_MAX + 1);
+				if (rc == 0) {
+					saslhost = my_hostname;
+				} else {
+					saslhost = "localhost";
+				}
+			} else
+#endif
+			if ( nocanon )
+				saslhost = ld->ld_defconn->lconn_server->lud_host;
+			else {
+				saslhost = ldap_host_connected_to( ld->ld_defconn->lconn_sb,
+				"localhost" );
+				free_saslhost = 1;
+			}
+			rc = ldap_int_sasl_open( ld, ld->ld_defconn, saslhost );
+			if ( free_saslhost )
+				LDAP_FREE( saslhost );
+		}
+
+		if ( rc != LDAP_SUCCESS ) return rc;
+
+		ctx = ld->ld_defconn->lconn_sasl_authctx;
+
+#ifdef HAVE_TLS
+		/* Check for TLS */
+		ssl = ldap_pvt_tls_sb_ctx( ld->ld_defconn->lconn_sb );
+		if ( ssl ) {
+			struct berval authid = BER_BVNULL;
+			ber_len_t fac;
+
+			fac = ldap_pvt_tls_get_strength( ssl );
+			/* failure is OK, we just can't use SASL EXTERNAL */
+			(void) ldap_pvt_tls_get_my_dn( ssl, &authid, NULL, 0 );
+
+			(void) ldap_int_sasl_external( ld, ld->ld_defconn, authid.bv_val, fac );
+			LDAP_FREE( authid.bv_val );
+#ifdef SASL_CHANNEL_BINDING	/* 2.1.25+ */
+			if ( ld->ld_defconn->lconn_sasl_cbind == NULL ) {
+				void *cb;
+				cb = ldap_pvt_sasl_cbinding( ssl,
+							     ld->ld_options.ldo_sasl_cbinding,
+							     0 );
+				if ( cb != NULL ) {
+					sasl_setprop( ld->ld_defconn->lconn_sasl_authctx,
+						SASL_CHANNEL_BINDING, cb );
+					ld->ld_defconn->lconn_sasl_cbind = cb;
+				}
+			}
+#endif
+		}
+#endif
+
+#if !defined(_WIN32)
+		/* Check for local */
+		if ( ldap_pvt_url_scheme2proto(
+			ld->ld_defconn->lconn_server->lud_scheme ) == LDAP_PROTO_IPC )
+		{
+			char authid[sizeof("gidNumber=4294967295+uidNumber=4294967295,"
+				"cn=peercred,cn=external,cn=auth")];
+			sprintf( authid, "gidNumber=%u+uidNumber=%u,"
+				"cn=peercred,cn=external,cn=auth",
+				getegid(), geteuid() );
+			(void) ldap_int_sasl_external( ld, ld->ld_defconn, authid,
+				LDAP_PVT_SASL_LOCAL_SSF );
+		}
+#endif
+
+		/* (re)set security properties */
+		sasl_setprop( ctx, SASL_SEC_PROPS,
+			&ld->ld_options.ldo_sasl_secprops );
+
+		mech = NULL;
+
+		do {
+			saslrc = sasl_client_start( ctx,
+				mechs,
+#if SASL_VERSION_MAJOR < 2
+				NULL,
+#endif
+				&prompts,
+				(SASL_CONST char **)&ccred.bv_val,
+				&credlen,
+				&mech );
+
+			if( pmech == NULL && mech != NULL ) {
+				pmech = mech;
+				*rmech = mech;
+
+				if( flags != LDAP_SASL_QUIET ) {
+					fprintf(stderr,
+						"SASL/%s authentication started\n",
+						pmech );
+				}
+			}
+
+			if( saslrc == SASL_INTERACT ) {
+				int res;
+				if( !interact ) break;
+				res = (interact)( ld, flags, defaults, prompts );
+
+				if( res != LDAP_SUCCESS ) break;
+			}
+		} while ( saslrc == SASL_INTERACT );
+		rc = LDAP_SASL_BIND_IN_PROGRESS;
+
+	} else {
+		/* continuing an in-progress Bind */
+		struct berval *scred = NULL;
+
+		ctx = ld->ld_defconn->lconn_sasl_authctx;
+
+		rc = ldap_parse_sasl_bind_result( ld, result, &scred, 0 );
+		if ( rc != LDAP_SUCCESS ) {
+			if ( scred )
+				ber_bvfree( scred );
+			goto done;
+		}
+
+		rc = ldap_result2error( ld, result, 0 );
+		if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
+			if( scred ) {
+				/* and server provided us with data? */
+				Debug2( LDAP_DEBUG_TRACE,
+					"ldap_int_sasl_bind: rc=%d len=%ld\n",
+					rc, scred ? (long) scred->bv_len : -1L );
+				ber_bvfree( scred );
+				scred = NULL;
+			}
+			goto done;
+		}
+
+		mech = *rmech;
+		if ( rc == LDAP_SUCCESS && mech == NULL ) {
+			if ( scred )
+				ber_bvfree( scred );
+			goto success;
+		}
+
+		do {
+			if( ! scred ) {
+				/* no data! */
+				Debug0( LDAP_DEBUG_TRACE,
+					"ldap_int_sasl_bind: no data in step!\n" );
+			}
+
+			saslrc = sasl_client_step( ctx,
+				(scred == NULL) ? NULL : scred->bv_val,
+				(scred == NULL) ? 0 : scred->bv_len,
+				&prompts,
+				(SASL_CONST char **)&ccred.bv_val,
+				&credlen );
+
+			Debug1( LDAP_DEBUG_TRACE, "sasl_client_step: %d\n",
+				saslrc );
+
+			if( saslrc == SASL_INTERACT ) {
+				int res;
+				if( !interact ) break;
+				res = (interact)( ld, flags, defaults, prompts );
+				if( res != LDAP_SUCCESS ) break;
+			}
+		} while ( saslrc == SASL_INTERACT );
+
+		ber_bvfree( scred );
+	}
+
+	if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
+		rc = ld->ld_errno = sasl_err2ldap( saslrc );
+#if SASL_VERSION_MAJOR >= 2
+		if ( ld->ld_error ) {
+			LDAP_FREE( ld->ld_error );
+		}
+		ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
+#endif
+		goto done;
+	}
+
+	if ( saslrc == SASL_OK )
+		*rmech = NULL;
+
+	ccred.bv_len = credlen;
+
+	if ( rc == LDAP_SASL_BIND_IN_PROGRESS ) {
+		rc = ldap_sasl_bind( ld, dn, mech, &ccred, sctrls, cctrls, msgid );
+
+		if ( ccred.bv_val != NULL ) {
+#if SASL_VERSION_MAJOR < 2
+			LDAP_FREE( ccred.bv_val );
+#endif
+			ccred.bv_val = NULL;
+		}
+		if ( rc == LDAP_SUCCESS )
+			rc = LDAP_SASL_BIND_IN_PROGRESS;
+		goto done;
+	}
+
+success:
+	/* Conversation was completed successfully by now */
+	if( flags != LDAP_SASL_QUIET ) {
+		char *data;
+		saslrc = sasl_getprop( ctx, SASL_USERNAME,
+			(SASL_CONST void **)(char *) &data );
+		if( saslrc == SASL_OK && data && *data ) {
+			fprintf( stderr, "SASL username: %s\n", data );
+		}
+
+#if SASL_VERSION_MAJOR < 2
+		saslrc = sasl_getprop( ctx, SASL_REALM,
+			(SASL_CONST void **) &data );
+		if( saslrc == SASL_OK && data && *data ) {
+			fprintf( stderr, "SASL realm: %s\n", data );
+		}
+#endif
+	}
+
+	ssf = NULL;
+	saslrc = sasl_getprop( ctx, SASL_SSF, (SASL_CONST void **)(char *) &ssf );
+	if( saslrc == SASL_OK ) {
+		if( flags != LDAP_SASL_QUIET ) {
+			fprintf( stderr, "SASL SSF: %lu\n",
+				(unsigned long) *ssf );
+		}
+
+		if( ssf && *ssf ) {
+			if ( ld->ld_defconn->lconn_sasl_sockctx ) {
+				sasl_conn_t	*oldctx = ld->ld_defconn->lconn_sasl_sockctx;
+				sasl_dispose( &oldctx );
+				ldap_pvt_sasl_remove( ld->ld_defconn->lconn_sb );
+			}
+			ldap_pvt_sasl_install( ld->ld_defconn->lconn_sb, ctx );
+			ld->ld_defconn->lconn_sasl_sockctx = ctx;
+
+			if( flags != LDAP_SASL_QUIET ) {
+				fprintf( stderr, "SASL data security layer installed.\n" );
+			}
+		}
+	}
+	ld->ld_defconn->lconn_sasl_authctx = ctx;
+
+done:
+	return rc;
+}
+
+int
+ldap_int_sasl_external(
+	LDAP *ld,
+	LDAPConn *conn,
+	const char * authid,
+	ber_len_t ssf )
+{
+	int sc;
+	sasl_conn_t *ctx;
+#if SASL_VERSION_MAJOR < 2
+	sasl_external_properties_t extprops;
+#else
+	sasl_ssf_t sasl_ssf = ssf;
+#endif
+
+	ctx = conn->lconn_sasl_authctx;
+
+	if ( ctx == NULL ) {
+		return LDAP_LOCAL_ERROR;
+	}
+   
+#if SASL_VERSION_MAJOR >= 2
+	sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &sasl_ssf );
+	if ( sc == SASL_OK )
+		sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL, authid );
+#else
+	memset( &extprops, '\0', sizeof(extprops) );
+	extprops.ssf = ssf;
+	extprops.auth_id = (char *) authid;
+
+	sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
+		(void *) &extprops );
+#endif
+
+	if ( sc != SASL_OK ) {
+		return LDAP_LOCAL_ERROR;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+
+#define GOT_MINSSF	1
+#define	GOT_MAXSSF	2
+#define	GOT_MAXBUF	4
+
+static struct {
+	struct berval key;
+	int sflag;
+	int ival;
+	int idef;
+} sprops[] = {
+	{ BER_BVC("none"), 0, 0, 0 },
+	{ BER_BVC("nodict"), SASL_SEC_NODICTIONARY, 0, 0 },
+	{ BER_BVC("noplain"), SASL_SEC_NOPLAINTEXT, 0, 0 },
+	{ BER_BVC("noactive"), SASL_SEC_NOACTIVE, 0, 0 },
+	{ BER_BVC("passcred"), SASL_SEC_PASS_CREDENTIALS, 0, 0 },
+	{ BER_BVC("forwardsec"), SASL_SEC_FORWARD_SECRECY, 0, 0 },
+	{ BER_BVC("noanonymous"), SASL_SEC_NOANONYMOUS, 0, 0 },
+	{ BER_BVC("minssf="), 0, GOT_MINSSF, 0 },
+	{ BER_BVC("maxssf="), 0, GOT_MAXSSF, INT_MAX },
+	{ BER_BVC("maxbufsize="), 0, GOT_MAXBUF, 65536 },
+	{ BER_BVNULL, 0, 0, 0 }
+};
+
+void ldap_pvt_sasl_secprops_unparse(
+	sasl_security_properties_t *secprops,
+	struct berval *out )
+{
+	int i, l = 0;
+	int comma;
+	char *ptr;
+
+	if ( secprops == NULL || out == NULL ) {
+		return;
+	}
+
+	comma = 0;
+	for ( i=0; !BER_BVISNULL( &sprops[i].key ); i++ ) {
+		if ( sprops[i].ival ) {
+			int v = 0;
+
+			switch( sprops[i].ival ) {
+			case GOT_MINSSF: v = secprops->min_ssf; break;
+			case GOT_MAXSSF: v = secprops->max_ssf; break;
+			case GOT_MAXBUF: v = secprops->maxbufsize; break;
+			}
+			/* It is the default, ignore it */
+			if ( v == sprops[i].idef ) continue;
+
+			l += sprops[i].key.bv_len + 24;
+		} else if ( sprops[i].sflag ) {
+			if ( sprops[i].sflag & secprops->security_flags ) {
+				l += sprops[i].key.bv_len;
+			}
+		} else if ( secprops->security_flags == 0 ) {
+			l += sprops[i].key.bv_len;
+		}
+		if ( comma ) l++;
+		comma = 1;
+	}
+	l++;
+
+	out->bv_val = LDAP_MALLOC( l );
+	if ( out->bv_val == NULL ) {
+		out->bv_len = 0;
+		return;
+	}
+
+	ptr = out->bv_val;
+	comma = 0;
+	for ( i=0; !BER_BVISNULL( &sprops[i].key ); i++ ) {
+		if ( sprops[i].ival ) {
+			int v = 0;
+
+			switch( sprops[i].ival ) {
+			case GOT_MINSSF: v = secprops->min_ssf; break;
+			case GOT_MAXSSF: v = secprops->max_ssf; break;
+			case GOT_MAXBUF: v = secprops->maxbufsize; break;
+			}
+			/* It is the default, ignore it */
+			if ( v == sprops[i].idef ) continue;
+
+			if ( comma ) *ptr++ = ',';
+			ptr += sprintf(ptr, "%s%d", sprops[i].key.bv_val, v );
+			comma = 1;
+		} else if ( sprops[i].sflag ) {
+			if ( sprops[i].sflag & secprops->security_flags ) {
+				if ( comma ) *ptr++ = ',';
+				ptr += sprintf(ptr, "%s", sprops[i].key.bv_val );
+				comma = 1;
+			}
+		} else if ( secprops->security_flags == 0 ) {
+			if ( comma ) *ptr++ = ',';
+			ptr += sprintf(ptr, "%s", sprops[i].key.bv_val );
+			comma = 1;
+		}
+	}
+	out->bv_len = ptr - out->bv_val;
+}
+
+int ldap_pvt_sasl_secprops(
+	const char *in,
+	sasl_security_properties_t *secprops )
+{
+	unsigned i, j, l;
+	char **props;
+	unsigned sflags = 0;
+	int got_sflags = 0;
+	sasl_ssf_t max_ssf = 0;
+	int got_max_ssf = 0;
+	sasl_ssf_t min_ssf = 0;
+	int got_min_ssf = 0;
+	unsigned maxbufsize = 0;
+	int got_maxbufsize = 0;
+
+	if( secprops == NULL ) {
+		return LDAP_PARAM_ERROR;
+	}
+	props = ldap_str2charray( in, "," );
+	if( props == NULL ) {
+		return LDAP_PARAM_ERROR;
+	}
+
+	for( i=0; props[i]; i++ ) {
+		l = strlen( props[i] );
+		for ( j=0; !BER_BVISNULL( &sprops[j].key ); j++ ) {
+			if ( l < sprops[j].key.bv_len ) continue;
+			if ( strncasecmp( props[i], sprops[j].key.bv_val,
+				sprops[j].key.bv_len )) continue;
+			if ( sprops[j].ival ) {
+				unsigned v;
+				char *next = NULL;
+				if ( !isdigit( (unsigned char)props[i][sprops[j].key.bv_len] ))
+					continue;
+				v = strtoul( &props[i][sprops[j].key.bv_len], &next, 10 );
+				if ( next == &props[i][sprops[j].key.bv_len] || next[0] != '\0' ) continue;
+				switch( sprops[j].ival ) {
+				case GOT_MINSSF:
+					min_ssf = v; got_min_ssf++; break;
+				case GOT_MAXSSF:
+					max_ssf = v; got_max_ssf++; break;
+				case GOT_MAXBUF:
+					maxbufsize = v; got_maxbufsize++; break;
+				}
+			} else {
+				if ( props[i][sprops[j].key.bv_len] ) continue;
+				if ( sprops[j].sflag )
+					sflags |= sprops[j].sflag;
+				else
+					sflags = 0;
+				got_sflags++;
+			}
+			break;
+		}
+		if ( BER_BVISNULL( &sprops[j].key )) {
+			ldap_charray_free( props );
+			return LDAP_NOT_SUPPORTED;
+		}
+	}
+
+	if(got_sflags) {
+		secprops->security_flags = sflags;
+	}
+	if(got_min_ssf) {
+		secprops->min_ssf = min_ssf;
+	}
+	if(got_max_ssf) {
+		secprops->max_ssf = max_ssf;
+	}
+	if(got_maxbufsize) {
+		secprops->maxbufsize = maxbufsize;
+	}
+
+	ldap_charray_free( props );
+	return LDAP_SUCCESS;
+}
+
+int
+ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
+{
+	int rc, i;
+
+	switch( option ) {
+	case LDAP_OPT_X_SASL_SECPROPS:
+		rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
+		if( rc == LDAP_SUCCESS ) return 0;
+		break;
+	case LDAP_OPT_X_SASL_CBINDING:
+		i = ldap_pvt_sasl_cbinding_parse( arg );
+		if ( i >= 0 ) {
+			lo->ldo_sasl_cbinding = i;
+			return 0;
+		}
+		break;
+	}
+
+	return -1;
+}
+
+int
+ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
+{
+	if ( option == LDAP_OPT_X_SASL_MECHLIST ) {
+		*(char ***)arg = (char **)sasl_global_listmech();
+		return 0;
+	}
+
+	if ( ld == NULL )
+		return -1;
+
+	switch ( option ) {
+		case LDAP_OPT_X_SASL_MECH: {
+			*(char **)arg = ld->ld_options.ldo_def_sasl_mech
+				? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_mech ) : NULL;
+		} break;
+		case LDAP_OPT_X_SASL_REALM: {
+			*(char **)arg = ld->ld_options.ldo_def_sasl_realm
+				? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_realm ) : NULL;
+		} break;
+		case LDAP_OPT_X_SASL_AUTHCID: {
+			*(char **)arg = ld->ld_options.ldo_def_sasl_authcid
+				? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authcid ) : NULL;
+		} break;
+		case LDAP_OPT_X_SASL_AUTHZID: {
+			*(char **)arg = ld->ld_options.ldo_def_sasl_authzid
+				? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authzid ) : NULL;
+		} break;
+
+		case LDAP_OPT_X_SASL_SSF: {
+			int sc;
+			sasl_ssf_t	*ssf;
+			sasl_conn_t *ctx;
+
+			if( ld->ld_defconn == NULL ) {
+				return -1;
+			}
+
+			ctx = ld->ld_defconn->lconn_sasl_sockctx;
+
+			if ( ctx == NULL ) {
+				return -1;
+			}
+
+			sc = sasl_getprop( ctx, SASL_SSF,
+				(SASL_CONST void **)(char *) &ssf );
+
+			if ( sc != SASL_OK ) {
+				return -1;
+			}
+
+			*(ber_len_t *)arg = *ssf;
+		} break;
+
+		case LDAP_OPT_X_SASL_SSF_EXTERNAL:
+			/* this option is write only */
+			return -1;
+
+		case LDAP_OPT_X_SASL_SSF_MIN:
+			*(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
+			break;
+		case LDAP_OPT_X_SASL_SSF_MAX:
+			*(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
+			break;
+		case LDAP_OPT_X_SASL_MAXBUFSIZE:
+			*(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
+			break;
+		case LDAP_OPT_X_SASL_NOCANON:
+			*(int *)arg = (int) LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_SASL_NOCANON );
+			break;
+
+		case LDAP_OPT_X_SASL_USERNAME: {
+			int sc;
+			char *username;
+			sasl_conn_t *ctx;
+
+			if( ld->ld_defconn == NULL ) {
+				return -1;
+			}
+
+			ctx = ld->ld_defconn->lconn_sasl_authctx;
+
+			if ( ctx == NULL ) {
+				return -1;
+			}
+
+			sc = sasl_getprop( ctx, SASL_USERNAME,
+				(SASL_CONST void **)(char **) &username );
+
+			if ( sc != SASL_OK ) {
+				return -1;
+			}
+
+			*(char **)arg = username ? LDAP_STRDUP( username ) : NULL;
+		} break;
+
+		case LDAP_OPT_X_SASL_SECPROPS:
+			/* this option is write only */
+			return -1;
+
+		case LDAP_OPT_X_SASL_CBINDING:
+			*(int *)arg = ld->ld_options.ldo_sasl_cbinding;
+			break;
+
+#ifdef SASL_GSS_CREDS
+		case LDAP_OPT_X_SASL_GSS_CREDS: {
+			sasl_conn_t *ctx;
+			int sc;
+
+			if ( ld->ld_defconn == NULL )
+				return -1;
+
+			ctx = ld->ld_defconn->lconn_sasl_authctx;
+			if ( ctx == NULL )
+				return -1;
+
+			sc = sasl_getprop( ctx, SASL_GSS_CREDS, arg );
+			if ( sc != SASL_OK )
+				return -1;
+			}
+			break;
+#endif
+
+		default:
+			return -1;
+	}
+	return 0;
+}
+
+int
+ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
+{
+	if ( ld == NULL )
+		return -1;
+
+	if ( arg == NULL && option != LDAP_OPT_X_SASL_NOCANON )
+		return -1;
+
+	switch ( option ) {
+	case LDAP_OPT_X_SASL_SSF:
+	case LDAP_OPT_X_SASL_USERNAME:
+		/* This option is read-only */
+		return -1;
+
+	case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
+		int sc;
+#if SASL_VERSION_MAJOR < 2
+		sasl_external_properties_t extprops;
+#else
+		sasl_ssf_t sasl_ssf;
+#endif
+		sasl_conn_t *ctx;
+
+		if( ld->ld_defconn == NULL ) {
+			return -1;
+		}
+
+		ctx = ld->ld_defconn->lconn_sasl_authctx;
+
+		if ( ctx == NULL ) {
+			return -1;
+		}
+
+#if SASL_VERSION_MAJOR >= 2
+		sasl_ssf = * (ber_len_t *)arg;
+		sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &sasl_ssf);
+#else
+		memset(&extprops, 0L, sizeof(extprops));
+
+		extprops.ssf = * (ber_len_t *) arg;
+
+		sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
+			(void *) &extprops );
+#endif
+
+		if ( sc != SASL_OK ) {
+			return -1;
+		}
+		} break;
+
+	case LDAP_OPT_X_SASL_SSF_MIN:
+		ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
+		break;
+	case LDAP_OPT_X_SASL_SSF_MAX:
+		ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
+		break;
+	case LDAP_OPT_X_SASL_MAXBUFSIZE:
+		ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
+		break;
+	case LDAP_OPT_X_SASL_NOCANON:
+		if ( arg == LDAP_OPT_OFF ) {
+			LDAP_BOOL_CLR(&ld->ld_options, LDAP_BOOL_SASL_NOCANON );
+		} else {
+			LDAP_BOOL_SET(&ld->ld_options, LDAP_BOOL_SASL_NOCANON );
+		}
+		break;
+
+	case LDAP_OPT_X_SASL_SECPROPS: {
+		int sc;
+		sc = ldap_pvt_sasl_secprops( (char *) arg,
+			&ld->ld_options.ldo_sasl_secprops );
+
+		return sc == LDAP_SUCCESS ? 0 : -1;
+		}
+
+	case LDAP_OPT_X_SASL_CBINDING:
+		if ( !arg ) return -1;
+		switch( *(int *) arg ) {
+		case LDAP_OPT_X_SASL_CBINDING_NONE:
+		case LDAP_OPT_X_SASL_CBINDING_TLS_UNIQUE:
+		case LDAP_OPT_X_SASL_CBINDING_TLS_ENDPOINT:
+			ld->ld_options.ldo_sasl_cbinding = *(int *) arg;
+			return 0;
+		}
+		return -1;
+
+#ifdef SASL_GSS_CREDS
+	case LDAP_OPT_X_SASL_GSS_CREDS: {
+		sasl_conn_t *ctx;
+		int sc;
+
+		if ( ld->ld_defconn == NULL )
+			return -1;
+
+		ctx = ld->ld_defconn->lconn_sasl_authctx;
+		if ( ctx == NULL )
+			return -1;
+
+		sc = sasl_setprop( ctx, SASL_GSS_CREDS, arg );
+		if ( sc != SASL_OK )
+			return -1;
+		}
+		break;
+#endif
+
+	default:
+		return -1;
+	}
+	return 0;
+}
+
+#ifdef LDAP_R_COMPILE
+#define LDAP_DEBUG_R_SASL
+void *ldap_pvt_sasl_mutex_new(void)
+{
+	ldap_pvt_thread_mutex_t *mutex;
+
+	mutex = (ldap_pvt_thread_mutex_t *) LDAP_CALLOC( 1,
+		sizeof(ldap_pvt_thread_mutex_t) );
+
+	if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
+		return mutex;
+	}
+	LDAP_FREE( mutex );
+#ifndef LDAP_DEBUG_R_SASL
+	assert( 0 );
+#endif /* !LDAP_DEBUG_R_SASL */
+	return NULL;
+}
+
+int ldap_pvt_sasl_mutex_lock(void *mutex)
+{
+#ifdef LDAP_DEBUG_R_SASL
+	if ( mutex == NULL ) {
+		return SASL_OK;
+	}
+#else /* !LDAP_DEBUG_R_SASL */
+	assert( mutex != NULL );
+#endif /* !LDAP_DEBUG_R_SASL */
+	return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
+		? SASL_FAIL : SASL_OK;
+}
+
+int ldap_pvt_sasl_mutex_unlock(void *mutex)
+{
+#ifdef LDAP_DEBUG_R_SASL
+	if ( mutex == NULL ) {
+		return SASL_OK;
+	}
+#else /* !LDAP_DEBUG_R_SASL */
+	assert( mutex != NULL );
+#endif /* !LDAP_DEBUG_R_SASL */
+	return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
+		? SASL_FAIL : SASL_OK;
+}
+
+void ldap_pvt_sasl_mutex_dispose(void *mutex)
+{
+#ifdef LDAP_DEBUG_R_SASL
+	if ( mutex == NULL ) {
+		return;
+	}
+#else /* !LDAP_DEBUG_R_SASL */
+	assert( mutex != NULL );
+#endif /* !LDAP_DEBUG_R_SASL */
+	(void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
+	LDAP_FREE( mutex );
+}
+#endif
+
+#else
+int ldap_int_sasl_init( void )
+{ return LDAP_SUCCESS; }
+
+int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
+{ return LDAP_SUCCESS; }
+
+int
+ldap_int_sasl_bind(
+	LDAP			*ld,
+	const char		*dn,
+	const char		*mechs,
+	LDAPControl		**sctrls,
+	LDAPControl		**cctrls,
+	unsigned		flags,
+	LDAP_SASL_INTERACT_PROC *interact,
+	void			*defaults,
+	LDAPMessage		*result,
+	const char		**rmech,
+	int				*msgid )
+{ return LDAP_NOT_SUPPORTED; }
+
+int
+ldap_int_sasl_external(
+	LDAP *ld,
+	LDAPConn *conn,
+	const char * authid,
+	ber_len_t ssf )
+{ return LDAP_SUCCESS; }
+
+#endif /* HAVE_CYRUS_SASL */