--- /dev/null
+/* $OpenLDAP$ */
+/*
+ * Copyright 1999-2003 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+
+#include "portable.h"
+
+#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 "ldap-int.h"
+
+#ifdef HAVE_CYRUS_SASL
+
+#ifdef LDAP_R_COMPILE
+ldap_pvt_thread_mutex_t ldap_int_sasl_mutex;
+#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.
+*/
+
+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)
+
+ { int rc;
+ sasl_version( NULL, &rc );
+ if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
+ (rc & 0xffff) < SASL_VERSION_STEP) {
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, INFO,
+ "ldap_int_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
+ rc, SASL_BUILD_VERSION, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "ldap_int_sasl_init: SASL version mismatch, got %x, wanted %x.\n",
+ rc, SASL_BUILD_VERSION, 0 );
+#endif
+ return -1;
+ }
+ }
+#endif
+ if ( sasl_initialized ) {
+ return 0;
+ }
+
+/* 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 );
+
+ ldap_pvt_thread_mutex_init( &ldap_int_sasl_mutex );
+#endif
+
+ if ( sasl_client_init( client_callbacks ) == SASL_OK ) {
+ sasl_initialized = 1;
+ 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;
+}
+
+/*
+ * SASL encryption support for LBER Sockbufs
+ */
+
+struct sb_sasl_data {
+ sasl_conn_t *sasl_context;
+ unsigned *sasl_maxbuf;
+ Sockbuf_Buf sec_buf_in;
+ Sockbuf_Buf buf_in;
+ Sockbuf_Buf buf_out;
+};
+
+static int
+sb_sasl_setup( Sockbuf_IO_Desc *sbiod, void *arg )
+{
+ struct sb_sasl_data *p;
+
+ assert( sbiod != NULL );
+
+ p = LBER_MALLOC( sizeof( *p ) );
+ if ( p == NULL )
+ return -1;
+ p->sasl_context = (sasl_conn_t *)arg;
+ ber_pvt_sb_buf_init( &p->sec_buf_in );
+ ber_pvt_sb_buf_init( &p->buf_in );
+ ber_pvt_sb_buf_init( &p->buf_out );
+ if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, SASL_MIN_BUFF_SIZE ) < 0 ) {
+ LBER_FREE( p );
+ errno = ENOMEM;
+ return -1;
+ }
+ sasl_getprop( p->sasl_context, SASL_MAXOUTBUF,
+ (SASL_CONST void **) &p->sasl_maxbuf );
+
+ sbiod->sbiod_pvt = p;
+
+ return 0;
+}
+
+static int
+sb_sasl_remove( Sockbuf_IO_Desc *sbiod )
+{
+ struct sb_sasl_data *p;
+
+ assert( sbiod != NULL );
+
+ p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
+#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
+ ber_pvt_sb_buf_destroy( &p->sec_buf_in );
+ ber_pvt_sb_buf_destroy( &p->buf_in );
+ ber_pvt_sb_buf_destroy( &p->buf_out );
+ LBER_FREE( p );
+ sbiod->sbiod_pvt = NULL;
+ return 0;
+}
+
+static ber_len_t
+sb_sasl_pkt_length( const unsigned char *buf, unsigned max, int debuglevel )
+{
+ ber_len_t size;
+
+ assert( buf != NULL );
+
+ size = buf[0] << 24
+ | buf[1] << 16
+ | buf[2] << 8
+ | buf[3];
+
+ if ( size > SASL_MAX_BUFF_SIZE ) {
+ /* somebody is trying to mess me up. */
+ ber_log_printf( LDAP_DEBUG_ANY, debuglevel,
+ "sb_sasl_pkt_length: received illegal packet length "
+ "of %lu bytes\n", (unsigned long)size );
+ size = 16; /* this should lead to an error. */
+ }
+
+ return size + 4; /* include the size !!! */
+}
+
+/* Drop a processed packet from the input buffer */
+static void
+sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, unsigned max, int debuglevel )
+{
+ ber_slen_t len;
+
+ len = sec_buf_in->buf_ptr - sec_buf_in->buf_end;
+ if ( len > 0 )
+ AC_MEMCPY( sec_buf_in->buf_base, sec_buf_in->buf_base +
+ 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);
+ }
+ else {
+ sec_buf_in->buf_end = 0;
+ }
+ sec_buf_in->buf_ptr = len;
+}
+
+static ber_slen_t
+sb_sasl_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct sb_sasl_data *p;
+ ber_slen_t ret, bufptr;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
+
+ /* Are there anything left in the buffer? */
+ ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len );
+ bufptr = ret;
+ len -= ret;
+
+ if ( len == 0 )
+ return bufptr;
+
+#if SASL_VERSION_MAJOR >= 2
+ ber_pvt_sb_buf_init( &p->buf_in );
+#else
+ ber_pvt_sb_buf_destroy( &p->buf_in );
+#endif
+
+ /* 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,
+ 4 - p->sec_buf_in.buf_ptr );
+#ifdef EINTR
+ if ( ( ret < 0 ) && ( errno == EINTR ) )
+ continue;
+#endif
+ if ( ret <= 0 )
+ return bufptr ? bufptr : ret;
+
+ p->sec_buf_in.buf_ptr += ret;
+ }
+
+ /* 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 );
+
+ /* Grow the packet buffer if neccessary */
+ if ( ( p->sec_buf_in.buf_size < (ber_len_t) ret ) &&
+ ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 )
+ {
+ errno = ENOMEM;
+ return -1;
+ }
+ p->sec_buf_in.buf_end = ret;
+
+ /* Did we read the whole encrypted packet? */
+ while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) {
+ /* No, we have got only a part of it */
+ ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr;
+
+ ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
+ p->sec_buf_in.buf_ptr, ret );
+#ifdef EINTR
+ if ( ( ret < 0 ) && ( errno == EINTR ) )
+ continue;
+#endif
+ if ( ret <= 0 )
+ return bufptr ? bufptr : ret;
+
+ p->sec_buf_in.buf_ptr += 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 );
+
+ /* Drop the packet from the input buffer */
+ sb_sasl_drop_packet( &p->sec_buf_in,
+ *p->sasl_maxbuf, sbiod->sbiod_sb->sb_debug );
+
+ if ( ret != SASL_OK ) {
+ ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
+ "sb_sasl_read: failed to decode packet: %s\n",
+ sasl_errstring( ret, NULL, NULL ) );
+ errno = EIO;
+ return -1;
+ }
+
+ p->buf_in.buf_size = p->buf_in.buf_end;
+
+ bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len );
+
+ return bufptr;
+}
+
+static ber_slen_t
+sb_sasl_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct sb_sasl_data *p;
+ int ret;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
+
+ /* 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;
+ /* Still have something left?? */
+ if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
+ errno = EAGAIN;
+ return 0;
+ }
+ }
+
+ /* 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 ( 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 ) );
+ 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 len;
+}
+
+static int
+sb_sasl_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
+{
+ struct sb_sasl_data *p;
+
+ 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;
+ }
+
+ return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
+}
+
+Sockbuf_IO ldap_pvt_sockbuf_io_sasl = {
+ sb_sasl_setup, /* sbi_setup */
+ sb_sasl_remove, /* sbi_remove */
+ sb_sasl_ctrl, /* sbi_ctrl */
+ sb_sasl_read, /* sbi_read */
+ sb_sasl_write, /* sbi_write */
+ NULL /* sbi_close */
+};
+
+int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
+{
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, ENTRY, "ldap_pvt_sasl_install\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_install\n",
+ 0, 0, 0 );
+#endif
+
+ /* don't install the stuff unless security has been negotiated */
+
+ if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO,
+ &ldap_pvt_sockbuf_io_sasl ) )
+ {
+#ifdef LDAP_DEBUG
+ ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_APPLICATION, (void *)"sasl_" );
+#endif
+ ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl,
+ LBER_SBIOD_LEVEL_APPLICATION, ctx_arg );
+ }
+
+ return LDAP_SUCCESS;
+}
+
+static int
+sasl_err2ldap( int saslerr )
+{
+ int rc;
+
+ 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_FAIL:
+ rc = LDAP_LOCAL_ERROR;
+ break;
+ case SASL_NOMEM:
+ rc = LDAP_NO_MEMORY;
+ break;
+ case SASL_NOMECH:
+ rc = LDAP_AUTH_UNKNOWN;
+ break;
+ case SASL_BADAUTH:
+ rc = LDAP_AUTH_UNKNOWN;
+ break;
+ case SASL_NOAUTHZ:
+ rc = LDAP_PARAM_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_ctx == 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,
+ NULL, 0, &ctx );
+#else
+ rc = sasl_client_new( "ldap", host, NULL,
+ SASL_SECURITY_LAYER, &ctx );
+#endif
+
+ if ( rc != SASL_OK ) {
+ ld->ld_errno = sasl_err2ldap( rc );
+ return ld->ld_errno;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, DETAIL1, "ldap_int_sasl_open: host=%s\n",
+ host, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: host=%s\n",
+ host, 0, 0 );
+#endif
+
+ lc->lconn_sasl_ctx = ctx;
+
+ return LDAP_SUCCESS;
+}
+
+int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
+{
+ sasl_conn_t *ctx = lc->lconn_sasl_ctx;
+
+ if( ctx != NULL ) {
+ sasl_dispose( &ctx );
+ lc->lconn_sasl_ctx = NULL;
+ }
+
+ 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 )
+{
+ char *data;
+ const char *mech = NULL;
+ const char *pmech = NULL;
+ int saslrc, rc;
+ sasl_ssf_t *ssf = NULL;
+ sasl_conn_t *ctx;
+ sasl_interact_t *prompts = NULL;
+ unsigned credlen;
+ struct berval ccred;
+ ber_socket_t sd;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, ARGS, "ldap_int_sasl_bind: %s\n",
+ mechs ? mechs : "<null>", 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
+ mechs ? mechs : "<null>", 0, 0 );
+#endif
+
+ /* 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;
+ }
+
+ ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
+
+ if ( sd == AC_SOCKET_INVALID ) {
+ /* not connected yet */
+ int rc;
+
+ rc = ldap_open_defconn( ld );
+ if( rc < 0 ) return ld->ld_errno;
+
+ ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
+
+ if( sd == AC_SOCKET_INVALID ) {
+ ld->ld_errno = LDAP_LOCAL_ERROR;
+ return ld->ld_errno;
+ }
+ }
+
+ ctx = ld->ld_defconn->lconn_sasl_ctx;
+
+ if( ctx == NULL ) {
+ ld->ld_errno = LDAP_LOCAL_ERROR;
+ return ld->ld_errno;
+ }
+
+ /* (re)set security properties */
+ sasl_setprop( ctx, SASL_SEC_PROPS,
+ &ld->ld_options.ldo_sasl_secprops );
+
+ ccred.bv_val = NULL;
+ ccred.bv_len = 0;
+
+ 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;
+
+ if( flags != LDAP_SASL_QUIET ) {
+ fprintf(stderr,
+ "SASL/%s authentication started\n",
+ pmech );
+ }
+ }
+
+ if( saslrc == SASL_INTERACT ) {
+ int res;
+
+#if SASL_VERSION_MAJOR >= 2
+ /* XXX the application should free interact results.
+ * FIXME: this should happen only
+ * if saslrc == SASL_INTERACT
+ *
+ * I assume that prompts->result is not needed
+ * by the subsequent call to (interact)() */
+ if ( prompts != NULL && prompts->result != NULL ) {
+ LDAP_FREE( (void *)prompts->result );
+ prompts->result = NULL;
+ }
+#endif
+
+ if( !interact ) break;
+ res = (interact)( ld, flags, defaults, prompts );
+ if( res != LDAP_SUCCESS ) {
+ break;
+ }
+ }
+ } while ( saslrc == SASL_INTERACT );
+
+ ccred.bv_len = credlen;
+
+ 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 );
+#endif
+ return ld->ld_errno;
+ }
+
+ do {
+ struct berval *scred;
+ unsigned credlen;
+
+ scred = NULL;
+
+ rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls, &scred );
+
+ 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 ) {
+ if( scred && 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 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
+ rc, saslrc, scred->bv_len );
+#endif
+ ber_bvfree( scred );
+ }
+ return ld->ld_errno;
+ }
+
+ if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
+ /* we're done, no need to step */
+ if( scred && 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 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
+ rc, saslrc, scred->bv_len );
+#endif
+ ber_bvfree( scred );
+ return ld->ld_errno = LDAP_LOCAL_ERROR;
+ }
+ break;
+ }
+
+ do {
+ 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 );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, DETAIL1,
+ "ldap_int_sasl_bind: sasl_client_step: %d\n", saslrc,0,0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "sasl_client_step: %d\n",
+ saslrc, 0, 0 );
+#endif
+
+#if SASL_VERSION_MAJOR >= 2
+ /* XXX the application should free interact results. */
+ if ( prompts != NULL && prompts->result != NULL ) {
+ LDAP_FREE( (void *)prompts->result );
+ prompts->result = NULL;
+ }
+#endif
+
+ if( saslrc == SASL_INTERACT ) {
+ int res;
+ if( !interact ) break;
+ res = (interact)( ld, flags, defaults, prompts );
+ if( res != LDAP_SUCCESS ) {
+ break;
+ }
+ }
+ } while ( saslrc == SASL_INTERACT );
+
+ ccred.bv_len = credlen;
+ ber_bvfree( scred );
+
+ 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 );
+#endif
+ return ld->ld_errno;
+ }
+ } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
+
+ if ( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+
+ if ( saslrc != SASL_OK ) {
+#if SASL_VERSION_MAJOR >= 2
+ ld->ld_error = (char *)sasl_errdetail( ctx );
+#endif
+ return ld->ld_errno = sasl_err2ldap( saslrc );
+ }
+
+ if( flags != LDAP_SASL_QUIET ) {
+ saslrc = sasl_getprop( ctx, SASL_USERNAME, (SASL_CONST void **) &data );
+ if( saslrc == SASL_OK && data && *data ) {
+ fprintf( stderr, "SASL username: %s\n", data );
+ }
+
+#if SASL_VERSION_MAJOR >= 2
+ saslrc = sasl_getprop( ctx, SASL_DEFUSERREALM, (SASL_CONST void **) &data );
+#else
+ saslrc = sasl_getprop( ctx, SASL_REALM, (SASL_CONST void **) &data );
+#endif
+ if( saslrc == SASL_OK && data && *data ) {
+ fprintf( stderr, "SASL realm: %s\n", data );
+ }
+ }
+
+ saslrc = sasl_getprop( ctx, SASL_SSF, (SASL_CONST void **) &ssf );
+ if( saslrc == SASL_OK ) {
+ if( flags != LDAP_SASL_QUIET ) {
+ fprintf( stderr, "SASL SSF: %lu\n",
+ (unsigned long) *ssf );
+ }
+
+ if( ssf && *ssf ) {
+ if( flags != LDAP_SASL_QUIET ) {
+ fprintf( stderr, "SASL installing layers\n" );
+ }
+ ldap_pvt_sasl_install( ld->ld_conns->lconn_sb, ctx );
+ }
+ }
+
+ 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;
+#endif
+
+ ctx = conn->lconn_sasl_ctx;
+
+ if ( ctx == NULL ) {
+ return LDAP_LOCAL_ERROR;
+ }
+
+#if SASL_VERSION_MAJOR >= 2
+ sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &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;
+}
+
+
+int ldap_pvt_sasl_secprops(
+ const char *in,
+ sasl_security_properties_t *secprops )
+{
+ int i;
+ char **props = ldap_str2charray( in, "," );
+ 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( props == NULL || secprops == NULL ) {
+ return LDAP_PARAM_ERROR;
+ }
+
+ for( i=0; props[i]; i++ ) {
+ if( !strcasecmp(props[i], "none") ) {
+ got_sflags++;
+
+ } else if( !strcasecmp(props[i], "noplain") ) {
+ got_sflags++;
+ sflags |= SASL_SEC_NOPLAINTEXT;
+
+ } else if( !strcasecmp(props[i], "noactive") ) {
+ got_sflags++;
+ sflags |= SASL_SEC_NOACTIVE;
+
+ } else if( !strcasecmp(props[i], "nodict") ) {
+ got_sflags++;
+ sflags |= SASL_SEC_NODICTIONARY;
+
+ } else if( !strcasecmp(props[i], "forwardsec") ) {
+ got_sflags++;
+ sflags |= SASL_SEC_FORWARD_SECRECY;
+
+ } else if( !strcasecmp(props[i], "noanonymous")) {
+ got_sflags++;
+ sflags |= SASL_SEC_NOANONYMOUS;
+
+ } else if( !strcasecmp(props[i], "passcred") ) {
+ got_sflags++;
+ sflags |= SASL_SEC_PASS_CREDENTIALS;
+
+ } else if( !strncasecmp(props[i],
+ "minssf=", sizeof("minssf")) )
+ {
+ if( isdigit( (unsigned char) props[i][sizeof("minssf")] ) ) {
+ got_min_ssf++;
+ min_ssf = atoi( &props[i][sizeof("minssf")] );
+ } else {
+ return LDAP_NOT_SUPPORTED;
+ }
+
+ } else if( !strncasecmp(props[i],
+ "maxssf=", sizeof("maxssf")) )
+ {
+ if( isdigit( (unsigned char) props[i][sizeof("maxssf")] ) ) {
+ got_max_ssf++;
+ max_ssf = atoi( &props[i][sizeof("maxssf")] );
+ } else {
+ return LDAP_NOT_SUPPORTED;
+ }
+
+ } else if( !strncasecmp(props[i],
+ "maxbufsize=", sizeof("maxbufsize")) )
+ {
+ if( isdigit( (unsigned char) props[i][sizeof("maxbufsize")] ) ) {
+ got_maxbufsize++;
+ maxbufsize = atoi( &props[i][sizeof("maxbufsize")] );
+ } else {
+ return LDAP_NOT_SUPPORTED;
+ }
+
+ if( maxbufsize && (( maxbufsize < SASL_MIN_BUFF_SIZE )
+ || (maxbufsize > SASL_MAX_BUFF_SIZE )))
+ {
+ /* bad maxbufsize */
+ return LDAP_PARAM_ERROR;
+ }
+
+ } else {
+ 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;
+
+ switch( option ) {
+ case LDAP_OPT_X_SASL_SECPROPS:
+ rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
+ if( rc == LDAP_SUCCESS ) return 0;
+ }
+
+ return -1;
+}
+
+int
+ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
+{
+ 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_ctx;
+
+ if ( ctx == NULL ) {
+ return -1;
+ }
+
+ sc = sasl_getprop( ctx, SASL_SSF,
+ (SASL_CONST void **) &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_SECPROPS:
+ /* this option is write only */
+ return -1;
+
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+int
+ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
+{
+ if ( ld == NULL )
+ return -1;
+
+ switch ( option ) {
+ case LDAP_OPT_X_SASL_SSF:
+ /* 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;
+#endif
+ sasl_conn_t *ctx;
+
+ if( ld->ld_defconn == NULL ) {
+ return -1;
+ }
+
+ ctx = ld->ld_defconn->lconn_sasl_ctx;
+
+ if ( ctx == NULL ) {
+ return -1;
+ }
+
+#if SASL_VERSION_MAJOR >= 2
+ sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, arg);
+#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_SECPROPS: {
+ int sc;
+ sc = ldap_pvt_sasl_secprops( (char *) arg,
+ &ld->ld_options.ldo_sasl_secprops );
+
+ return sc == LDAP_SUCCESS ? 0 : -1;
+ }
+
+ 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_MALLOC(
+ sizeof(ldap_pvt_thread_mutex_t) );
+
+ if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
+ return 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 );
+#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 );
+#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 );
+#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 )
+{ 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 */
projects / openldap / commitdiff