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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
commit5ea77a75dd2d2158401331879f3c8f47940a732c (patch)
treed89dc06e9f4850a900f161e25f84e922c4f86cc8 /libraries/libldap/cyrus.c
parentInitial commit. (diff)
downloadopenldap-5ea77a75dd2d2158401331879f3c8f47940a732c.tar.xz
openldap-5ea77a75dd2d2158401331879f3c8f47940a732c.zip
Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libraries/libldap/cyrus.c')
-rw-r--r--libraries/libldap/cyrus.c1335
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 */