/* $OpenLDAP$ */
-/*
- * Copyright 1999-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2005 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 <ac/time.h>
#include <ac/errno.h>
#include <ac/ctype.h>
+#include <ac/unistd.h>
#include "ldap-int.h"
* 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 }
+};
+
int ldap_int_sasl_init( void )
{
/* XXX not threadsafe */
static int sasl_initialized = 0;
- static 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 }
- };
-
#ifdef HAVE_SASL_VERSION
-#define SASL_BUILD_VERSION ((SASL_VERSION_MAJOR << 24) |\
- (SASL_VERSION_MINOR << 16) | SASL_VERSION_STEP)
-
+ /* 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 );
#ifdef NEW_LOGGING
LDAP_LOG( TRANSPORT, INFO,
- "ldap_int_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
- rc, SASL_BUILD_VERSION, 0 );
+ "ldap_int_sasl_init: SASL library version mismatch:"
+ " expected " SASL_VERSION_STRING ","
+ " got %s\n", version, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
- "ldap_int_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
- rc, SASL_BUILD_VERSION, 0 );
+ "ldap_int_sasl_init: SASL library version mismatch:"
+ " expected " SASL_VERSION_STRING ","
+ " got %s\n", version, 0, 0 );
#endif
return -1;
}
ldap_pvt_sasl_mutex_lock,
ldap_pvt_sasl_mutex_unlock,
ldap_pvt_sasl_mutex_dispose );
-
- ldap_pvt_thread_mutex_init( &ldap_int_sasl_mutex );
#endif
- if ( sasl_client_init( client_callbacks ) == SASL_OK ) {
+ if ( sasl_client_init( NULL ) == SASL_OK ) {
sasl_initialized = 1;
return 0;
}
}
sasl_getprop( p->sasl_context, SASL_MAXOUTBUF,
(SASL_CONST void **) &p->sasl_maxbuf );
-
+
sbiod->sbiod_pvt = p;
return 0;
}
static ber_len_t
-sb_sasl_pkt_length( const unsigned char *buf, unsigned max, int debuglevel )
+sb_sasl_pkt_length( const unsigned char *buf, int debuglevel )
{
ber_len_t size;
/* Drop a processed packet from the input buffer */
static void
-sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, unsigned max, int debuglevel )
+sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, int debuglevel )
{
ber_slen_t len;
sec_buf_in->buf_end, len );
if ( len >= 4 ) {
- sec_buf_in->buf_end = sb_sasl_pkt_length( sec_buf_in->buf_base,
- max, debuglevel);
+ sec_buf_in->buf_end = sb_sasl_pkt_length(
+ (unsigned char *) sec_buf_in->buf_base, debuglevel);
}
else {
sec_buf_in->buf_end = 0;
/* Read the length of the packet */
while ( p->sec_buf_in.buf_ptr < 4 ) {
- ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base,
+ ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
+ p->sec_buf_in.buf_ptr,
4 - p->sec_buf_in.buf_ptr );
#ifdef EINTR
if ( ( ret < 0 ) && ( errno == EINTR ) )
}
/* The new packet always starts at p->sec_buf_in.buf_base */
- ret = sb_sasl_pkt_length( p->sec_buf_in.buf_base,
- *p->sasl_maxbuf, sbiod->sbiod_sb->sb_debug );
+ ret = sb_sasl_pkt_length( (unsigned char *) p->sec_buf_in.buf_base,
+ sbiod->sbiod_sb->sb_debug );
/* Grow the packet buffer if neccessary */
if ( ( p->sec_buf_in.buf_size < (ber_len_t) ret ) &&
}
/* Decode the packet */
- ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
- p->sec_buf_in.buf_end,
- (SASL_CONST char **)&p->buf_in.buf_base,
- (unsigned *)&p->buf_in.buf_end );
+ {
+ unsigned tmpsize = p->buf_in.buf_end;
+ ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
+ p->sec_buf_in.buf_end,
+ (SASL_CONST char **)&p->buf_in.buf_base,
+ (unsigned *)&tmpsize );
+ p->buf_in.buf_end = tmpsize;
+ }
/* Drop the packet from the input buffer */
- sb_sasl_drop_packet( &p->sec_buf_in,
- *p->sasl_maxbuf, sbiod->sbiod_sb->sb_debug );
+ sb_sasl_drop_packet( &p->sec_buf_in, sbiod->sbiod_sb->sb_debug );
if ( ret != SASL_OK ) {
ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
/* Are there anything left in the buffer? */
if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
- if ( ret < 0 )
- return ret;
+ if ( ret < 0 ) return ret;
+
/* Still have something left?? */
if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
errno = EAGAIN;
- return 0;
+ return -1;
}
}
/* now encode the next packet. */
#if SASL_VERSION_MAJOR >= 2
ber_pvt_sb_buf_init( &p->buf_out );
- /* sasl v2 makes sure this number is correct */
- if ( len > *p->sasl_maxbuf )
- len = *p->sasl_maxbuf;
#else
ber_pvt_sb_buf_destroy( &p->buf_out );
- if ( len > *p->sasl_maxbuf - 100 )
- len = *p->sasl_maxbuf - 100; /* For safety margin */
#endif
- ret = sasl_encode( p->sasl_context, buf, len,
- (SASL_CONST char **)&p->buf_out.buf_base,
- (unsigned *)&p->buf_out.buf_size );
+ if ( len > *p->sasl_maxbuf - 100 ) {
+ len = *p->sasl_maxbuf - 100; /* For safety margin */
+ }
+
+ {
+ unsigned tmpsize = p->buf_out.buf_size;
+ ret = sasl_encode( p->sasl_context, buf, len,
+ (SASL_CONST char **)&p->buf_out.buf_base,
+ &tmpsize );
+ p->buf_out.buf_size = tmpsize;
+ }
+
if ( ret != SASL_OK ) {
ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
"sb_sasl_write: failed to encode packet: %s\n",
sasl_errstring( ret, NULL, NULL ) );
+ errno = EIO;
return -1;
}
p->buf_out.buf_end = p->buf_out.buf_size;
ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
- if ( ret <= 0 )
- return ret;
+
+ /* return number of bytes encoded, not written, to ensure
+ * no byte is encoded twice (even if only sent once).
+ */
return len;
}
p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
if ( opt == LBER_SB_OPT_DATA_READY ) {
- if ( p->buf_in.buf_ptr != p->buf_in.buf_end )
- return 1;
+ if ( p->buf_in.buf_ptr != p->buf_in.buf_end ) return 1;
}
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
return LDAP_SUCCESS;
}
+void ldap_pvt_sasl_remove( Sockbuf *sb )
+{
+ ber_sockbuf_remove_io( sb, &ldap_pvt_sockbuf_io_sasl,
+ LBER_SBIOD_LEVEL_APPLICATION );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_APPLICATION );
+#endif
+}
+
static int
sasl_err2ldap( int saslerr )
{
int rc;
sasl_conn_t *ctx;
- assert( lc->lconn_sasl_ctx == NULL );
+ assert( lc->lconn_sasl_authctx == NULL );
if ( host == NULL ) {
ld->ld_errno = LDAP_LOCAL_ERROR;
return ld->ld_errno;
}
+ if ( ldap_int_sasl_init() ) {
+ ld->ld_errno = LDAP_LOCAL_ERROR;
+ return ld->ld_errno;
+ }
+
#if SASL_VERSION_MAJOR >= 2
rc = sasl_client_new( "ldap", host, NULL, NULL,
- NULL, 0, &ctx );
+ client_callbacks, 0, &ctx );
#else
- rc = sasl_client_new( "ldap", host, NULL,
+ rc = sasl_client_new( "ldap", host, client_callbacks,
SASL_SECURITY_LAYER, &ctx );
#endif
host, 0, 0 );
#endif
- lc->lconn_sasl_ctx = ctx;
+ lc->lconn_sasl_authctx = ctx;
return LDAP_SUCCESS;
}
int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
{
- sasl_conn_t *ctx = lc->lconn_sasl_ctx;
+ sasl_conn_t *ctx = lc->lconn_sasl_authctx;
if( ctx != NULL ) {
sasl_dispose( &ctx );
- lc->lconn_sasl_ctx = NULL;
+ 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;
}
return LDAP_SUCCESS;
const char *pmech = NULL;
int saslrc, rc;
sasl_ssf_t *ssf = NULL;
- sasl_conn_t *ctx;
+ sasl_conn_t *ctx, *oldctx = NULL;
sasl_interact_t *prompts = NULL;
unsigned credlen;
struct berval ccred;
ber_socket_t sd;
+ void *ssl;
#ifdef NEW_LOGGING
LDAP_LOG ( TRANSPORT, ARGS, "ldap_int_sasl_bind: %s\n",
rc = ldap_open_defconn( ld );
if( rc < 0 ) return ld->ld_errno;
- ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
+ 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;
}
}
- ctx = ld->ld_defconn->lconn_sasl_ctx;
+ oldctx = ld->ld_defconn->lconn_sasl_authctx;
- if( ctx == NULL ) {
- ld->ld_errno = LDAP_LOCAL_ERROR;
- return ld->ld_errno;
+ /* 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 = ldap_host_connected_to( ld->ld_defconn->lconn_sb, "localhost" );
+ rc = ldap_int_sasl_open( ld, ld->ld_defconn, saslhost );
+ LDAP_FREE( saslhost );
+ }
+
+ if ( rc != LDAP_SUCCESS ) return rc;
+
+ ctx = ld->ld_defconn->lconn_sasl_authctx;
+
+ /* 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 );
+ }
+
+#if !defined(_WIN32)
+ /* Check for local */
+ if ( ldap_pvt_url_scheme2proto( ld->ld_defconn->lconn_server->lud_scheme ) == LDAP_PROTO_IPC ) {
+ char authid[sizeof("uidNumber=4294967295+gidNumber=4294967295,"
+ "cn=peercred,cn=external,cn=auth")];
+ sprintf( authid, "uidNumber=%d+gidNumber=%d,"
+ "cn=peercred,cn=external,cn=auth",
+ (int) geteuid(), (int) getegid() );
+ (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,
int res;
if( !interact ) break;
res = (interact)( ld, flags, defaults, prompts );
+
if( res != LDAP_SUCCESS ) break;
}
} while ( saslrc == SASL_INTERACT );
if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
rc = ld->ld_errno = sasl_err2ldap( saslrc );
#if SASL_VERSION_MAJOR >= 2
- ld->ld_error = (char *)sasl_errdetail( ctx );
+ ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
#endif
goto done;
}
}
if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
- if( scred && scred->bv_len ) {
- /* and server provided us with data? */
+ if( scred ) {
+ if ( scred->bv_len ) {
+ /* and server provided us with data? */
#ifdef NEW_LOGGING
- LDAP_LOG ( TRANSPORT, DETAIL1,
- "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
- rc, saslrc, scred->bv_len );
+ LDAP_LOG ( TRANSPORT, DETAIL1,
+ "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
+ rc, saslrc, scred->bv_len );
#else
- Debug( LDAP_DEBUG_TRACE,
- "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
- rc, saslrc, scred->bv_len );
+ Debug( LDAP_DEBUG_TRACE,
+ "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
+ rc, saslrc, scred->bv_len );
#endif
+ }
ber_bvfree( scred );
}
rc = ld->ld_errno;
if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
/* we're done, no need to step */
- if( scred && scred->bv_len ) {
+ if( scred ) {
+ if ( scred->bv_len ) {
/* but server provided us with data! */
#ifdef NEW_LOGGING
- LDAP_LOG ( TRANSPORT, DETAIL1,
- "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
- rc, saslrc, scred->bv_len );
+ LDAP_LOG ( TRANSPORT, DETAIL1,
+ "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
+ rc, saslrc, scred->bv_len );
#else
- Debug( LDAP_DEBUG_TRACE,
- "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
- rc, saslrc, scred->bv_len );
+ Debug( LDAP_DEBUG_TRACE,
+ "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
+ rc, saslrc, scred->bv_len );
#endif
+ }
ber_bvfree( scred );
rc = ld->ld_errno = LDAP_LOCAL_ERROR;
goto done;
if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
ld->ld_errno = sasl_err2ldap( saslrc );
#if SASL_VERSION_MAJOR >= 2
- ld->ld_error = (char *)sasl_errdetail( ctx );
+ ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
#endif
rc = ld->ld_errno;
goto done;
if ( saslrc != SASL_OK ) {
#if SASL_VERSION_MAJOR >= 2
- ld->ld_error = (char *)sasl_errdetail( ctx );
+ ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
#endif
rc = ld->ld_errno = sasl_err2ldap( saslrc );
goto done;
fprintf( stderr, "SASL username: %s\n", data );
}
-#if SASL_VERSION_MAJOR >= 2
- saslrc = sasl_getprop( ctx, SASL_DEFUSERREALM, (SASL_CONST void **) &data );
-#else
+#if SASL_VERSION_MAJOR < 2
saslrc = sasl_getprop( ctx, SASL_REALM, (SASL_CONST void **) &data );
-#endif
if( saslrc == SASL_OK && data && *data ) {
fprintf( stderr, "SASL realm: %s\n", data );
}
+#endif
}
saslrc = sasl_getprop( ctx, SASL_SSF, (SASL_CONST void **) &ssf );
if( flags != LDAP_SASL_QUIET ) {
fprintf( stderr, "SASL installing layers\n" );
}
- ldap_pvt_sasl_install( ld->ld_conns->lconn_sb, ctx );
+ if ( ld->ld_defconn->lconn_sasl_sockctx ) {
+ 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;
}
}
+ ld->ld_defconn->lconn_sasl_authctx = ctx;
done:
- if( interact ) {
- /* cleanup */
- (void) (interact)( NULL, flags, defaults, prompts );
- }
-
return rc;
}
sasl_external_properties_t extprops;
#endif
- ctx = conn->lconn_sasl_ctx;
+ ctx = conn->lconn_sasl_authctx;
if ( ctx == NULL ) {
return LDAP_LOCAL_ERROR;
return -1;
}
- ctx = ld->ld_defconn->lconn_sasl_ctx;
+ ctx = ld->ld_defconn->lconn_sasl_sockctx;
if ( ctx == NULL ) {
return -1;
return -1;
}
- ctx = ld->ld_defconn->lconn_sasl_ctx;
+ ctx = ld->ld_defconn->lconn_sasl_authctx;
if ( ctx == NULL ) {
return -1;