2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2007 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
20 #include <ac/socket.h>
21 #include <ac/stdlib.h>
22 #include <ac/string.h>
26 #include <ac/unistd.h>
34 #ifdef HAVE_CYRUS_SASL
41 #define INT_MAX 2147483647 /* 32 bit signed max */
45 ldap_pvt_thread_mutex_t ldap_int_sasl_mutex;
48 #ifdef HAVE_SASL_SASL_H
49 #include <sasl/sasl.h>
54 #if SASL_VERSION_MAJOR >= 2
55 #define SASL_CONST const
61 * Various Cyrus SASL related stuff.
64 static const sasl_callback_t client_callbacks[] = {
65 #ifdef SASL_CB_GETREALM
66 { SASL_CB_GETREALM, NULL, NULL },
68 { SASL_CB_USER, NULL, NULL },
69 { SASL_CB_AUTHNAME, NULL, NULL },
70 { SASL_CB_PASS, NULL, NULL },
71 { SASL_CB_ECHOPROMPT, NULL, NULL },
72 { SASL_CB_NOECHOPROMPT, NULL, NULL },
73 { SASL_CB_LIST_END, NULL, NULL }
76 int ldap_int_sasl_init( void )
78 /* XXX not threadsafe */
79 static int sasl_initialized = 0;
81 #ifdef HAVE_SASL_VERSION
82 /* stringify the version number, sasl.h doesn't do it for us */
83 #define VSTR0(maj, min, pat) #maj "." #min "." #pat
84 #define VSTR(maj, min, pat) VSTR0(maj, min, pat)
85 #define SASL_VERSION_STRING VSTR(SASL_VERSION_MAJOR, SASL_VERSION_MINOR, \
88 sasl_version( NULL, &rc );
89 if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
90 (rc & 0xffff) < SASL_VERSION_STEP) {
91 char version[sizeof("xxx.xxx.xxxxx")];
92 sprintf( version, "%u.%d.%d", (unsigned)rc >> 24, (rc >> 16) & 0xff,
95 Debug( LDAP_DEBUG_ANY,
96 "ldap_int_sasl_init: SASL library version mismatch:"
97 " expected " SASL_VERSION_STRING ","
98 " got %s\n", version, 0, 0 );
103 if ( sasl_initialized ) {
107 /* SASL 2 takes care of its own memory completely internally */
108 #if SASL_VERSION_MAJOR < 2 && !defined(CSRIMALLOC)
114 #endif /* CSRIMALLOC */
116 #ifdef LDAP_R_COMPILE
118 ldap_pvt_sasl_mutex_new,
119 ldap_pvt_sasl_mutex_lock,
120 ldap_pvt_sasl_mutex_unlock,
121 ldap_pvt_sasl_mutex_dispose );
124 if ( sasl_client_init( NULL ) == SASL_OK ) {
125 sasl_initialized = 1;
129 #if SASL_VERSION_MAJOR < 2
130 /* A no-op to make sure we link with Cyrus 1.5 */
131 sasl_client_auth( NULL, NULL, NULL, 0, NULL, NULL );
137 * SASL encryption support for LBER Sockbufs
140 struct sb_sasl_data {
141 sasl_conn_t *sasl_context;
142 unsigned *sasl_maxbuf;
143 Sockbuf_Buf sec_buf_in;
149 sb_sasl_setup( Sockbuf_IO_Desc *sbiod, void *arg )
151 struct sb_sasl_data *p;
153 assert( sbiod != NULL );
155 p = LBER_MALLOC( sizeof( *p ) );
158 p->sasl_context = (sasl_conn_t *)arg;
159 ber_pvt_sb_buf_init( &p->sec_buf_in );
160 ber_pvt_sb_buf_init( &p->buf_in );
161 ber_pvt_sb_buf_init( &p->buf_out );
162 if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, SASL_MIN_BUFF_SIZE ) < 0 ) {
167 sasl_getprop( p->sasl_context, SASL_MAXOUTBUF,
168 (SASL_CONST void **)(char *) &p->sasl_maxbuf );
170 sbiod->sbiod_pvt = p;
176 sb_sasl_remove( Sockbuf_IO_Desc *sbiod )
178 struct sb_sasl_data *p;
180 assert( sbiod != NULL );
182 p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
183 #if SASL_VERSION_MAJOR >= 2
185 * SASLv2 encode/decode buffers are managed by
186 * libsasl2. Ensure they are not freed by liblber.
188 p->buf_in.buf_base = NULL;
189 p->buf_out.buf_base = NULL;
191 ber_pvt_sb_buf_destroy( &p->sec_buf_in );
192 ber_pvt_sb_buf_destroy( &p->buf_in );
193 ber_pvt_sb_buf_destroy( &p->buf_out );
195 sbiod->sbiod_pvt = NULL;
200 sb_sasl_pkt_length( const unsigned char *buf, int debuglevel )
204 assert( buf != NULL );
211 if ( size > SASL_MAX_BUFF_SIZE ) {
212 /* somebody is trying to mess me up. */
213 ber_log_printf( LDAP_DEBUG_ANY, debuglevel,
214 "sb_sasl_pkt_length: received illegal packet length "
215 "of %lu bytes\n", (unsigned long)size );
216 size = 16; /* this should lead to an error. */
219 return size + 4; /* include the size !!! */
222 /* Drop a processed packet from the input buffer */
224 sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, int debuglevel )
228 len = sec_buf_in->buf_ptr - sec_buf_in->buf_end;
230 AC_MEMCPY( sec_buf_in->buf_base, sec_buf_in->buf_base +
231 sec_buf_in->buf_end, len );
234 sec_buf_in->buf_end = sb_sasl_pkt_length(
235 (unsigned char *) sec_buf_in->buf_base, debuglevel);
238 sec_buf_in->buf_end = 0;
240 sec_buf_in->buf_ptr = len;
244 sb_sasl_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
246 struct sb_sasl_data *p;
247 ber_slen_t ret, bufptr;
249 assert( sbiod != NULL );
250 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
252 p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
254 /* Are there anything left in the buffer? */
255 ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len );
262 #if SASL_VERSION_MAJOR >= 2
263 ber_pvt_sb_buf_init( &p->buf_in );
265 ber_pvt_sb_buf_destroy( &p->buf_in );
268 /* Read the length of the packet */
269 while ( p->sec_buf_in.buf_ptr < 4 ) {
270 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
271 p->sec_buf_in.buf_ptr,
272 4 - p->sec_buf_in.buf_ptr );
274 if ( ( ret < 0 ) && ( errno == EINTR ) )
278 return bufptr ? bufptr : ret;
280 p->sec_buf_in.buf_ptr += ret;
283 /* The new packet always starts at p->sec_buf_in.buf_base */
284 ret = sb_sasl_pkt_length( (unsigned char *) p->sec_buf_in.buf_base,
285 sbiod->sbiod_sb->sb_debug );
287 /* Grow the packet buffer if neccessary */
288 if ( ( p->sec_buf_in.buf_size < (ber_len_t) ret ) &&
289 ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 )
294 p->sec_buf_in.buf_end = ret;
296 /* Did we read the whole encrypted packet? */
297 while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) {
298 /* No, we have got only a part of it */
299 ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr;
301 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
302 p->sec_buf_in.buf_ptr, ret );
304 if ( ( ret < 0 ) && ( errno == EINTR ) )
308 return bufptr ? bufptr : ret;
310 p->sec_buf_in.buf_ptr += ret;
313 /* Decode the packet */
315 unsigned tmpsize = p->buf_in.buf_end;
316 ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
317 p->sec_buf_in.buf_end,
318 (SASL_CONST char **)&p->buf_in.buf_base,
319 (unsigned *)&tmpsize );
320 p->buf_in.buf_end = tmpsize;
323 /* Drop the packet from the input buffer */
324 sb_sasl_drop_packet( &p->sec_buf_in, sbiod->sbiod_sb->sb_debug );
326 if ( ret != SASL_OK ) {
327 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
328 "sb_sasl_read: failed to decode packet: %s\n",
329 sasl_errstring( ret, NULL, NULL ) );
334 p->buf_in.buf_size = p->buf_in.buf_end;
336 bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len );
342 sb_sasl_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
344 struct sb_sasl_data *p;
347 assert( sbiod != NULL );
348 assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
350 p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
352 /* Are there anything left in the buffer? */
353 if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
354 ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
355 if ( ret < 0 ) return ret;
357 /* Still have something left?? */
358 if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
364 /* now encode the next packet. */
365 #if SASL_VERSION_MAJOR >= 2
366 ber_pvt_sb_buf_init( &p->buf_out );
368 ber_pvt_sb_buf_destroy( &p->buf_out );
370 if ( len > *p->sasl_maxbuf - 100 ) {
371 len = *p->sasl_maxbuf - 100; /* For safety margin */
375 unsigned tmpsize = p->buf_out.buf_size;
376 ret = sasl_encode( p->sasl_context, buf, len,
377 (SASL_CONST char **)&p->buf_out.buf_base,
379 p->buf_out.buf_size = tmpsize;
382 if ( ret != SASL_OK ) {
383 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
384 "sb_sasl_write: failed to encode packet: %s\n",
385 sasl_errstring( ret, NULL, NULL ) );
389 p->buf_out.buf_end = p->buf_out.buf_size;
391 ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
393 /* return number of bytes encoded, not written, to ensure
394 * no byte is encoded twice (even if only sent once).
400 sb_sasl_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
402 struct sb_sasl_data *p;
404 p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
406 if ( opt == LBER_SB_OPT_DATA_READY ) {
407 if ( p->buf_in.buf_ptr != p->buf_in.buf_end ) return 1;
410 return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
413 Sockbuf_IO ldap_pvt_sockbuf_io_sasl = {
414 sb_sasl_setup, /* sbi_setup */
415 sb_sasl_remove, /* sbi_remove */
416 sb_sasl_ctrl, /* sbi_ctrl */
417 sb_sasl_read, /* sbi_read */
418 sb_sasl_write, /* sbi_write */
422 int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
424 Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_install\n",
427 /* don't install the stuff unless security has been negotiated */
429 if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO,
430 &ldap_pvt_sockbuf_io_sasl ) )
433 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
434 LBER_SBIOD_LEVEL_APPLICATION, (void *)"sasl_" );
436 ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl,
437 LBER_SBIOD_LEVEL_APPLICATION, ctx_arg );
443 void ldap_pvt_sasl_remove( Sockbuf *sb )
445 ber_sockbuf_remove_io( sb, &ldap_pvt_sockbuf_io_sasl,
446 LBER_SBIOD_LEVEL_APPLICATION );
448 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
449 LBER_SBIOD_LEVEL_APPLICATION );
454 sasl_err2ldap( int saslerr )
458 /* map SASL errors to LDAP API errors returned by:
460 * SASL_OK, SASL_NOMECH, SASL_NOMEM
461 * sasl_client_start()
462 * SASL_OK, SASL_NOMECH, SASL_NOMEM, SASL_INTERACT
464 * SASL_OK, SASL_INTERACT, SASL_BADPROT, SASL_BADSERV
469 rc = LDAP_MORE_RESULTS_TO_RETURN;
472 rc = LDAP_LOCAL_ERROR;
481 rc = LDAP_AUTH_UNKNOWN;
484 rc = LDAP_DECODING_ERROR;
487 rc = LDAP_AUTH_UNKNOWN;
492 rc = LDAP_AUTH_UNKNOWN;
495 rc = LDAP_PARAM_ERROR;
498 rc = LDAP_LOCAL_ERROR;
502 rc = LDAP_AUTH_UNKNOWN;
505 rc = LDAP_LOCAL_ERROR;
509 assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
522 assert( lc->lconn_sasl_authctx == NULL );
524 if ( host == NULL ) {
525 ld->ld_errno = LDAP_LOCAL_ERROR;
529 if ( ldap_int_sasl_init() ) {
530 ld->ld_errno = LDAP_LOCAL_ERROR;
534 #if SASL_VERSION_MAJOR >= 2
535 rc = sasl_client_new( "ldap", host, NULL, NULL,
536 client_callbacks, 0, &ctx );
538 rc = sasl_client_new( "ldap", host, client_callbacks,
539 SASL_SECURITY_LAYER, &ctx );
542 if ( rc != SASL_OK ) {
543 ld->ld_errno = sasl_err2ldap( rc );
547 Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: host=%s\n",
550 lc->lconn_sasl_authctx = ctx;
555 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
557 sasl_conn_t *ctx = lc->lconn_sasl_authctx;
560 sasl_dispose( &ctx );
561 if ( lc->lconn_sasl_sockctx &&
562 lc->lconn_sasl_authctx != lc->lconn_sasl_sockctx ) {
563 ctx = lc->lconn_sasl_sockctx;
564 sasl_dispose( &ctx );
566 lc->lconn_sasl_sockctx = NULL;
567 lc->lconn_sasl_authctx = NULL;
578 LDAPControl **sctrls,
579 LDAPControl **cctrls,
581 LDAP_SASL_INTERACT_PROC *interact,
585 const char *mech = NULL;
586 const char *pmech = NULL;
588 sasl_ssf_t *ssf = NULL;
589 sasl_conn_t *ctx, *oldctx = NULL;
590 sasl_interact_t *prompts = NULL;
596 Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
597 mechs ? mechs : "<null>", 0, 0 );
599 /* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
600 if (ld->ld_version < LDAP_VERSION3) {
601 ld->ld_errno = LDAP_NOT_SUPPORTED;
606 #ifdef LDAP_R_COMPILE
607 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
609 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
611 if ( sd == AC_SOCKET_INVALID ) {
612 /* not connected yet */
614 rc = ldap_open_defconn( ld );
617 ber_sockbuf_ctrl( ld->ld_defconn->lconn_sb,
618 LBER_SB_OPT_GET_FD, &sd );
620 if( sd == AC_SOCKET_INVALID ) {
621 ld->ld_errno = LDAP_LOCAL_ERROR;
626 #ifdef LDAP_R_COMPILE
627 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
629 if( rc != 0 ) return ld->ld_errno;
631 oldctx = ld->ld_defconn->lconn_sasl_authctx;
633 /* If we already have an authentication context, clear it out */
635 if ( oldctx != ld->ld_defconn->lconn_sasl_sockctx ) {
636 sasl_dispose( &oldctx );
638 ld->ld_defconn->lconn_sasl_authctx = NULL;
642 char *saslhost = ldap_host_connected_to( ld->ld_defconn->lconn_sb,
644 rc = ldap_int_sasl_open( ld, ld->ld_defconn, saslhost );
645 LDAP_FREE( saslhost );
648 if ( rc != LDAP_SUCCESS ) return rc;
650 ctx = ld->ld_defconn->lconn_sasl_authctx;
653 ssl = ldap_pvt_tls_sb_ctx( ld->ld_defconn->lconn_sb );
655 struct berval authid = BER_BVNULL;
658 fac = ldap_pvt_tls_get_strength( ssl );
659 /* failure is OK, we just can't use SASL EXTERNAL */
660 (void) ldap_pvt_tls_get_my_dn( ssl, &authid, NULL, 0 );
662 (void) ldap_int_sasl_external( ld, ld->ld_defconn, authid.bv_val, fac );
663 LDAP_FREE( authid.bv_val );
667 /* Check for local */
668 if ( ldap_pvt_url_scheme2proto(
669 ld->ld_defconn->lconn_server->lud_scheme ) == LDAP_PROTO_IPC )
671 char authid[sizeof("gidNumber=4294967295+uidNumber=4294967295,"
672 "cn=peercred,cn=external,cn=auth")];
673 sprintf( authid, "gidNumber=%d+uidNumber=%d,"
674 "cn=peercred,cn=external,cn=auth",
675 (int) getegid(), (int) geteuid() );
676 (void) ldap_int_sasl_external( ld, ld->ld_defconn, authid,
677 LDAP_PVT_SASL_LOCAL_SSF );
681 /* (re)set security properties */
682 sasl_setprop( ctx, SASL_SEC_PROPS,
683 &ld->ld_options.ldo_sasl_secprops );
689 saslrc = sasl_client_start( ctx,
691 #if SASL_VERSION_MAJOR < 2
695 (SASL_CONST char **)&ccred.bv_val,
699 if( pmech == NULL && mech != NULL ) {
702 if( flags != LDAP_SASL_QUIET ) {
704 "SASL/%s authentication started\n",
709 if( saslrc == SASL_INTERACT ) {
711 if( !interact ) break;
712 res = (interact)( ld, flags, defaults, prompts );
714 if( res != LDAP_SUCCESS ) break;
716 } while ( saslrc == SASL_INTERACT );
718 ccred.bv_len = credlen;
720 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
721 rc = ld->ld_errno = sasl_err2ldap( saslrc );
722 #if SASL_VERSION_MAJOR >= 2
723 if ( ld->ld_error ) {
724 LDAP_FREE( ld->ld_error );
726 ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
732 struct berval *scred;
737 rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls,
740 if ( ccred.bv_val != NULL ) {
741 #if SASL_VERSION_MAJOR < 2
742 LDAP_FREE( ccred.bv_val );
747 if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
749 /* and server provided us with data? */
750 Debug( LDAP_DEBUG_TRACE,
751 "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
752 rc, saslrc, scred ? scred->bv_len : -1 );
760 if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
761 /* we're done, no need to step */
763 /* but we got additional data? */
764 #define KLUDGE_FOR_MSAD
765 #ifdef KLUDGE_FOR_MSAD
767 * MSAD provides empty additional data in violation of LDAP
768 * technical specifications. As no existing SASL mechanism
769 * allows empty data with an outcome message, just ignore it
770 * for now. Hopefully MS will fix their bug before someone
771 * defines a mechanism with possibly empty additional data.
773 if( scred->bv_len == 0 ) {
774 Debug( LDAP_DEBUG_ANY,
775 "ldap_int_sasl_bind: ignoring "
776 " bogus empty data provided with SASL outcome message.\n",
777 rc, saslrc, scred->bv_len );
782 Debug( LDAP_DEBUG_TRACE,
783 "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
784 rc, saslrc, scred->bv_len );
785 rc = ld->ld_errno = LDAP_LOCAL_ERROR;
796 Debug( LDAP_DEBUG_TRACE,
797 "ldap_int_sasl_bind: no data in step!\n",
801 saslrc = sasl_client_step( ctx,
802 (scred == NULL) ? NULL : scred->bv_val,
803 (scred == NULL) ? 0 : scred->bv_len,
805 (SASL_CONST char **)&ccred.bv_val,
808 Debug( LDAP_DEBUG_TRACE, "sasl_client_step: %d\n",
811 if( saslrc == SASL_INTERACT ) {
813 if( !interact ) break;
814 res = (interact)( ld, flags, defaults, prompts );
815 if( res != LDAP_SUCCESS ) break;
817 } while ( saslrc == SASL_INTERACT );
819 ccred.bv_len = credlen;
822 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
823 ld->ld_errno = sasl_err2ldap( saslrc );
824 #if SASL_VERSION_MAJOR >= 2
825 if ( ld->ld_error ) {
826 LDAP_FREE( ld->ld_error );
828 ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
833 } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
835 if ( rc != LDAP_SUCCESS ) goto done;
837 if ( saslrc != SASL_OK ) {
838 #if SASL_VERSION_MAJOR >= 2
839 if ( ld->ld_error ) {
840 LDAP_FREE( ld->ld_error );
842 ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
844 rc = ld->ld_errno = sasl_err2ldap( saslrc );
848 if( flags != LDAP_SASL_QUIET ) {
849 saslrc = sasl_getprop( ctx, SASL_USERNAME,
850 (SASL_CONST void **)(char *) &data );
851 if( saslrc == SASL_OK && data && *data ) {
852 fprintf( stderr, "SASL username: %s\n", data );
855 #if SASL_VERSION_MAJOR < 2
856 saslrc = sasl_getprop( ctx, SASL_REALM,
857 (SASL_CONST void **) &data );
858 if( saslrc == SASL_OK && data && *data ) {
859 fprintf( stderr, "SASL realm: %s\n", data );
864 saslrc = sasl_getprop( ctx, SASL_SSF, (SASL_CONST void **)(char *) &ssf );
865 if( saslrc == SASL_OK ) {
866 if( flags != LDAP_SASL_QUIET ) {
867 fprintf( stderr, "SASL SSF: %lu\n",
868 (unsigned long) *ssf );
872 if ( ld->ld_defconn->lconn_sasl_sockctx ) {
873 oldctx = ld->ld_defconn->lconn_sasl_sockctx;
874 sasl_dispose( &oldctx );
875 ldap_pvt_sasl_remove( ld->ld_defconn->lconn_sb );
877 ldap_pvt_sasl_install( ld->ld_defconn->lconn_sb, ctx );
878 ld->ld_defconn->lconn_sasl_sockctx = ctx;
880 if( flags != LDAP_SASL_QUIET ) {
881 fprintf( stderr, "SASL data security layer installed.\n" );
885 ld->ld_defconn->lconn_sasl_authctx = ctx;
892 ldap_int_sasl_external(
900 #if SASL_VERSION_MAJOR < 2
901 sasl_external_properties_t extprops;
904 ctx = conn->lconn_sasl_authctx;
907 return LDAP_LOCAL_ERROR;
910 #if SASL_VERSION_MAJOR >= 2
911 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
913 sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL, authid );
915 memset( &extprops, '\0', sizeof(extprops) );
917 extprops.auth_id = (char *) authid;
919 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
920 (void *) &extprops );
923 if ( sc != SASL_OK ) {
924 return LDAP_LOCAL_ERROR;
941 { BER_BVC("none"), 0, 0, 0 },
942 { BER_BVC("nodict"), SASL_SEC_NODICTIONARY, 0, 0 },
943 { BER_BVC("noplain"), SASL_SEC_NOPLAINTEXT, 0, 0 },
944 { BER_BVC("noactive"), SASL_SEC_NOACTIVE, 0, 0 },
945 { BER_BVC("passcred"), SASL_SEC_PASS_CREDENTIALS, 0, 0 },
946 { BER_BVC("forwardsec"), SASL_SEC_FORWARD_SECRECY, 0, 0 },
947 { BER_BVC("noanonymous"), SASL_SEC_NOANONYMOUS, 0, 0 },
948 { BER_BVC("minssf="), 0, GOT_MINSSF, 0 },
949 { BER_BVC("maxssf="), 0, GOT_MAXSSF, INT_MAX },
950 { BER_BVC("maxbufsize="), 0, GOT_MAXBUF, 65536 },
951 { BER_BVNULL, 0, 0, 0 }
954 void ldap_pvt_sasl_secprops_unparse(
955 sasl_security_properties_t *secprops,
962 if ( secprops == NULL || out == NULL ) {
967 for ( i=0; !BER_BVISNULL( &sprops[i].key ); i++ ) {
968 if ( sprops[i].ival ) {
971 switch( sprops[i].ival ) {
972 case GOT_MINSSF: v = secprops->min_ssf; break;
973 case GOT_MAXSSF: v = secprops->max_ssf; break;
974 case GOT_MAXBUF: v = secprops->maxbufsize; break;
976 /* It is the default, ignore it */
977 if ( v == sprops[i].idef ) continue;
979 l += sprops[i].key.bv_len + 24;
980 } else if ( sprops[i].sflag ) {
981 if ( sprops[i].sflag & secprops->security_flags ) {
982 l += sprops[i].key.bv_len;
984 } else if ( secprops->security_flags == 0 ) {
985 l += sprops[i].key.bv_len;
992 out->bv_val = LDAP_MALLOC( l );
993 if ( out->bv_val == NULL ) {
1000 for ( i=0; !BER_BVISNULL( &sprops[i].key ); i++ ) {
1001 if ( sprops[i].ival ) {
1004 switch( sprops[i].ival ) {
1005 case GOT_MINSSF: v = secprops->min_ssf; break;
1006 case GOT_MAXSSF: v = secprops->max_ssf; break;
1007 case GOT_MAXBUF: v = secprops->maxbufsize; break;
1009 /* It is the default, ignore it */
1010 if ( v == sprops[i].idef ) continue;
1012 if ( comma ) *ptr++ = ',';
1013 ptr += sprintf(ptr, "%s%d", sprops[i].key.bv_val, v );
1015 } else if ( sprops[i].sflag ) {
1016 if ( sprops[i].sflag & secprops->security_flags ) {
1017 if ( comma ) *ptr++ = ',';
1018 ptr += sprintf(ptr, "%s", sprops[i].key.bv_val );
1021 } else if ( secprops->security_flags == 0 ) {
1022 if ( comma ) *ptr++ = ',';
1023 ptr += sprintf(ptr, "%s", sprops[i].key.bv_val );
1027 out->bv_len = ptr - out->bv_val;
1030 int ldap_pvt_sasl_secprops(
1032 sasl_security_properties_t *secprops )
1036 unsigned sflags = 0;
1038 sasl_ssf_t max_ssf = 0;
1039 int got_max_ssf = 0;
1040 sasl_ssf_t min_ssf = 0;
1041 int got_min_ssf = 0;
1042 unsigned maxbufsize = 0;
1043 int got_maxbufsize = 0;
1045 if( secprops == NULL ) {
1046 return LDAP_PARAM_ERROR;
1048 props = ldap_str2charray( in, "," );
1049 if( props == NULL ) {
1050 return LDAP_PARAM_ERROR;
1053 for( i=0; props[i]; i++ ) {
1054 l = strlen( props[i] );
1055 for ( j=0; !BER_BVISNULL( &sprops[j].key ); j++ ) {
1056 if ( l < sprops[j].key.bv_len ) continue;
1057 if ( strncasecmp( props[i], sprops[j].key.bv_val,
1058 sprops[j].key.bv_len )) continue;
1059 if ( sprops[j].ival ) {
1062 if ( !isdigit( (unsigned char)props[i][sprops[j].key.bv_len] ))
1064 v = strtoul( &props[i][sprops[j].key.bv_len], &next, 10 );
1065 if ( next == &props[i][sprops[j].key.bv_len] || next[0] != '\0' ) continue;
1066 switch( sprops[j].ival ) {
1068 min_ssf = v; got_min_ssf++; break;
1070 max_ssf = v; got_max_ssf++; break;
1072 maxbufsize = v; got_maxbufsize++; break;
1075 if ( props[i][sprops[j].key.bv_len] ) continue;
1076 if ( sprops[j].sflag )
1077 sflags |= sprops[j].sflag;
1084 if ( BER_BVISNULL( &sprops[j].key )) {
1085 ldap_charray_free( props );
1086 return LDAP_NOT_SUPPORTED;
1091 secprops->security_flags = sflags;
1094 secprops->min_ssf = min_ssf;
1097 secprops->max_ssf = max_ssf;
1099 if(got_maxbufsize) {
1100 secprops->maxbufsize = maxbufsize;
1103 ldap_charray_free( props );
1104 return LDAP_SUCCESS;
1108 ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
1113 case LDAP_OPT_X_SASL_SECPROPS:
1114 rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
1115 if( rc == LDAP_SUCCESS ) return 0;
1122 ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
1128 case LDAP_OPT_X_SASL_MECH: {
1129 *(char **)arg = ld->ld_options.ldo_def_sasl_mech
1130 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_mech ) : NULL;
1132 case LDAP_OPT_X_SASL_REALM: {
1133 *(char **)arg = ld->ld_options.ldo_def_sasl_realm
1134 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_realm ) : NULL;
1136 case LDAP_OPT_X_SASL_AUTHCID: {
1137 *(char **)arg = ld->ld_options.ldo_def_sasl_authcid
1138 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authcid ) : NULL;
1140 case LDAP_OPT_X_SASL_AUTHZID: {
1141 *(char **)arg = ld->ld_options.ldo_def_sasl_authzid
1142 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authzid ) : NULL;
1145 case LDAP_OPT_X_SASL_SSF: {
1150 if( ld->ld_defconn == NULL ) {
1154 ctx = ld->ld_defconn->lconn_sasl_sockctx;
1156 if ( ctx == NULL ) {
1160 sc = sasl_getprop( ctx, SASL_SSF,
1161 (SASL_CONST void **)(char *) &ssf );
1163 if ( sc != SASL_OK ) {
1167 *(ber_len_t *)arg = *ssf;
1170 case LDAP_OPT_X_SASL_SSF_EXTERNAL:
1171 /* this option is write only */
1174 case LDAP_OPT_X_SASL_SSF_MIN:
1175 *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
1177 case LDAP_OPT_X_SASL_SSF_MAX:
1178 *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
1180 case LDAP_OPT_X_SASL_MAXBUFSIZE:
1181 *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
1184 case LDAP_OPT_X_SASL_SECPROPS:
1185 /* this option is write only */
1195 ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
1197 if ( ld == NULL || arg == NULL )
1201 case LDAP_OPT_X_SASL_SSF:
1202 /* This option is read-only */
1205 case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
1207 #if SASL_VERSION_MAJOR < 2
1208 sasl_external_properties_t extprops;
1212 if( ld->ld_defconn == NULL ) {
1216 ctx = ld->ld_defconn->lconn_sasl_authctx;
1218 if ( ctx == NULL ) {
1222 #if SASL_VERSION_MAJOR >= 2
1223 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, arg);
1225 memset(&extprops, 0L, sizeof(extprops));
1227 extprops.ssf = * (ber_len_t *) arg;
1229 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
1230 (void *) &extprops );
1233 if ( sc != SASL_OK ) {
1238 case LDAP_OPT_X_SASL_SSF_MIN:
1239 ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
1241 case LDAP_OPT_X_SASL_SSF_MAX:
1242 ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
1244 case LDAP_OPT_X_SASL_MAXBUFSIZE:
1245 ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
1248 case LDAP_OPT_X_SASL_SECPROPS: {
1250 sc = ldap_pvt_sasl_secprops( (char *) arg,
1251 &ld->ld_options.ldo_sasl_secprops );
1253 return sc == LDAP_SUCCESS ? 0 : -1;
1262 #ifdef LDAP_R_COMPILE
1263 #define LDAP_DEBUG_R_SASL
1264 void *ldap_pvt_sasl_mutex_new(void)
1266 ldap_pvt_thread_mutex_t *mutex;
1268 mutex = (ldap_pvt_thread_mutex_t *) LDAP_CALLOC( 1,
1269 sizeof(ldap_pvt_thread_mutex_t) );
1271 if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
1274 #ifndef LDAP_DEBUG_R_SASL
1276 #endif /* !LDAP_DEBUG_R_SASL */
1280 int ldap_pvt_sasl_mutex_lock(void *mutex)
1282 #ifdef LDAP_DEBUG_R_SASL
1283 if ( mutex == NULL ) {
1286 #else /* !LDAP_DEBUG_R_SASL */
1287 assert( mutex != NULL );
1288 #endif /* !LDAP_DEBUG_R_SASL */
1289 return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
1290 ? SASL_FAIL : SASL_OK;
1293 int ldap_pvt_sasl_mutex_unlock(void *mutex)
1295 #ifdef LDAP_DEBUG_R_SASL
1296 if ( mutex == NULL ) {
1299 #else /* !LDAP_DEBUG_R_SASL */
1300 assert( mutex != NULL );
1301 #endif /* !LDAP_DEBUG_R_SASL */
1302 return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
1303 ? SASL_FAIL : SASL_OK;
1306 void ldap_pvt_sasl_mutex_dispose(void *mutex)
1308 #ifdef LDAP_DEBUG_R_SASL
1309 if ( mutex == NULL ) {
1312 #else /* !LDAP_DEBUG_R_SASL */
1313 assert( mutex != NULL );
1314 #endif /* !LDAP_DEBUG_R_SASL */
1315 (void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
1321 int ldap_int_sasl_init( void )
1322 { return LDAP_SUCCESS; }
1324 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
1325 { return LDAP_SUCCESS; }
1332 LDAPControl **sctrls,
1333 LDAPControl **cctrls,
1335 LDAP_SASL_INTERACT_PROC *interact,
1337 { return LDAP_NOT_SUPPORTED; }
1340 ldap_int_sasl_external(
1343 const char * authid,
1345 { return LDAP_SUCCESS; }
1347 #endif /* HAVE_CYRUS_SASL */