but I'm leaving tls.c intact for now.
char *lt_cacertfile;
char *lt_cacertdir;
char *lt_ciphersuite;
-#ifdef HAVE_GNUTLS
char *lt_crlfile;
-#endif
+ char *lt_randfile; /* OpenSSL only */
};
#endif
#define ldo_tls_cacertdir ldo_tls_info.lt_cacertdir
#define ldo_tls_ciphersuite ldo_tls_info.lt_ciphersuite
#define ldo_tls_crlfile ldo_tls_info.lt_crlfile
+#define ldo_tls_randfile ldo_tls_info.lt_randfile
int ldo_tls_mode;
int ldo_tls_require_cert;
+ int ldo_tls_impl;
#ifdef HAVE_OPENSSL_CRL
int ldo_tls_crlcheck;
#endif
--- /dev/null
+/* ldap-tls.h - TLS defines & prototypes internal to the LDAP library */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008 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>.
+ */
+
+#ifndef _LDAP_TLS_H
+#define _LDAP_TLS_H 1
+
+struct tls_impl;
+
+typedef struct tls_ctx {
+ struct tls_impl *tc_impl;
+} tls_ctx;
+
+typedef struct tls_session {
+ struct tls_impl *ts_impl;
+ void *ts_session;
+} tls_session;
+
+typedef int (TI_tls_init)(void);
+typedef void (TI_tls_destroy)(void);
+
+typedef tls_ctx *(TI_ctx_new)(struct ldapoptions *lo);
+typedef void (TI_ctx_ref)(tls_ctx *ctx);
+typedef void (TI_ctx_free)(tls_ctx *ctx);
+typedef int (TI_ctx_init)(struct ldapoptions *lo, struct ldaptls *lt, int is_server);
+
+typedef tls_session *(TI_session_new)(tls_ctx *ctx, int is_server);
+typedef int (TI_session_connect)(LDAP *ld, tls_session *s);
+typedef int (TI_session_accept)(tls_session *s);
+typedef int (TI_session_upflags)(Sockbuf *sb, tls_session *s, int rc);
+typedef char *(TI_session_errmsg)(int rc, char *buf, size_t len );
+typedef int (TI_session_dn)(tls_session *sess, struct berval *dn);
+typedef int (TI_session_chkhost)(LDAP *ld, tls_session *s, const char *name_in);
+typedef int (TI_session_strength)(tls_session *sess);
+
+typedef void (TI_thr_init)(void);
+
+typedef struct tls_impl {
+ const char *ti_name;
+
+ TI_tls_init *ti_tls_init; /* library initialization */
+ TI_tls_destroy *ti_tls_destroy;
+
+ TI_ctx_new *ti_ctx_new;
+ TI_ctx_ref *ti_ctx_ref;
+ TI_ctx_free *ti_ctx_free;
+ TI_ctx_init *ti_ctx_init;
+
+ TI_session_new *ti_session_new;
+ TI_session_connect *ti_session_connect;
+ TI_session_accept *ti_session_accept;
+ TI_session_upflags *ti_session_upflags;
+ TI_session_errmsg *ti_session_errmsg;
+ TI_session_dn *ti_session_my_dn;
+ TI_session_dn *ti_session_peer_dn;
+ TI_session_chkhost *ti_session_chkhost;
+ TI_session_strength *ti_session_strength;
+
+ Sockbuf_IO *ti_sbio;
+
+ TI_thr_init *ti_thr_init;
+
+ int ti_inited;
+} tls_impl;
+
+#endif /* _LDAP_TLS_H */
--- /dev/null
+/* tls.c - Handle tls/ssl. */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2008 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>.
+ */
+/* ACKNOWLEDGEMENTS: restructured by Howard Chu.
+ */
+
+#include "portable.h"
+#include "ldap_config.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+#include <ac/param.h>
+#include <ac/dirent.h>
+
+#include "ldap-int.h"
+
+#ifdef HAVE_TLS
+
+#include "ldap-tls.h"
+
+#ifdef LDAP_R_COMPILE
+#include <ldap_pvt_thread.h>
+#endif
+
+#ifdef HAVE_GNUTLS
+extern tls_impl ldap_int_gnutls_impl;
+#endif
+
+#ifdef HAVE_OPENSSL
+extern tls_impl ldap_int_openssl_impl;
+#endif
+
+#ifdef HAVE_MOZNSS
+extern tls_impl ldap_int_moznss_impl;
+#endif
+
+static tls_impl *tls_impls[] = {
+#ifdef HAVE_OPENSSL
+ &ldap_int_openssl_impl,
+#endif
+#ifdef HAVE_GNUTLS
+ &ldap_int_gnutls_impl,
+#endif
+#ifdef HAVE_MOZNSS
+ &ldap_int_moznss_impl,
+#endif
+ NULL
+};
+
+#endif /* HAVE_TLS */
+
+/* RFC2459 minimum required set of supported attribute types
+ * in a certificate DN
+ */
+typedef struct oid_name {
+ struct berval oid;
+ struct berval name;
+} oid_name;
+
+static oid_name oids[] = {
+ { BER_BVC("2.5.4.3"), BER_BVC("cn") },
+ { BER_BVC("2.5.4.4"), BER_BVC("sn") },
+ { BER_BVC("2.5.4.6"), BER_BVC("c") },
+ { BER_BVC("2.5.4.7"), BER_BVC("l") },
+ { BER_BVC("2.5.4.8"), BER_BVC("st") },
+ { BER_BVC("2.5.4.10"), BER_BVC("o") },
+ { BER_BVC("2.5.4.11"), BER_BVC("ou") },
+ { BER_BVC("2.5.4.12"), BER_BVC("title") },
+ { BER_BVC("2.5.4.41"), BER_BVC("name") },
+ { BER_BVC("2.5.4.42"), BER_BVC("givenName") },
+ { BER_BVC("2.5.4.43"), BER_BVC("initials") },
+ { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") },
+ { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") },
+ { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") },
+ { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") },
+ { BER_BVNULL, BER_BVNULL }
+};
+
+void
+ldap_pvt_tls_ctx_free ( void *c )
+{
+ tls_ctx *ctx = c;
+
+ if ( !ctx ) return;
+
+ ctx->tc_impl->ti_ctx_free( ctx );
+}
+
+static void
+tls_ctx_ref( tls_ctx *ctx )
+{
+ if ( !ctx ) return;
+
+ ctx->tc_impl->ti_ctx_ref( ctx );
+}
+
+#ifdef LDAP_R_COMPILE
+/*
+ * an extra mutex for the default ctx.
+ */
+static ldap_pvt_thread_mutex_t tls_def_ctx_mutex;
+#endif
+
+void
+ldap_int_tls_destroy( struct ldapoptions *lo )
+{
+ if ( lo->ldo_tls_ctx ) {
+ ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
+ lo->ldo_tls_ctx = NULL;
+ }
+
+ if ( lo->ldo_tls_certfile ) {
+ LDAP_FREE( lo->ldo_tls_certfile );
+ lo->ldo_tls_certfile = NULL;
+ }
+ if ( lo->ldo_tls_keyfile ) {
+ LDAP_FREE( lo->ldo_tls_keyfile );
+ lo->ldo_tls_keyfile = NULL;
+ }
+ if ( lo->ldo_tls_dhfile ) {
+ LDAP_FREE( lo->ldo_tls_dhfile );
+ lo->ldo_tls_dhfile = NULL;
+ }
+ if ( lo->ldo_tls_cacertfile ) {
+ LDAP_FREE( lo->ldo_tls_cacertfile );
+ lo->ldo_tls_cacertfile = NULL;
+ }
+ if ( lo->ldo_tls_cacertdir ) {
+ LDAP_FREE( lo->ldo_tls_cacertdir );
+ lo->ldo_tls_cacertdir = NULL;
+ }
+ if ( lo->ldo_tls_ciphersuite ) {
+ LDAP_FREE( lo->ldo_tls_ciphersuite );
+ lo->ldo_tls_ciphersuite = NULL;
+ }
+ if ( lo->ldo_tls_crlfile ) {
+ LDAP_FREE( lo->ldo_tls_crlfile );
+ lo->ldo_tls_crlfile = NULL;
+ }
+}
+
+/*
+ * Tear down the TLS subsystem. Should only be called once.
+ */
+void
+ldap_pvt_tls_destroy( void )
+{
+ struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
+ int i;
+
+ ldap_int_tls_destroy( lo );
+
+ for ( i=0; tls_impls[i]; i++ ) {
+ if ( tls_impls[i]->ti_inited ) {
+ tls_impls[i]->ti_tls_destroy();
+ }
+ }
+}
+
+/*
+ * Initialize a particular TLS implementation.
+ * Called once per implementation.
+ */
+static int
+tls_init(tls_impl *impl )
+{
+ static int tls_initialized = 0;
+
+ if ( !tls_initialized++ ) {
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
+#endif
+ }
+
+ if ( impl->ti_inited++ ) return 0;
+
+#ifdef LDAP_R_COMPILE
+ impl->ti_thr_init();
+#endif
+ return impl->ti_tls_init();
+}
+
+/*
+ * Initialize TLS subsystem. Called once per implementation.
+ */
+int
+ldap_pvt_tls_init( void )
+{
+ struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
+
+ return tls_init( tls_impls[lo->ldo_tls_impl] );
+}
+
+/*
+ * initialize a new TLS context
+ */
+static int
+ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
+{
+ int i, rc = 0;
+ tls_impl *ti = tls_impls[lo->ldo_tls_impl];
+ struct ldaptls lts = lo->ldo_tls_info;
+
+ if ( lo->ldo_tls_ctx )
+ return 0;
+
+ tls_init( ti );
+
+ if ( is_server && !lts.lt_certfile && !lts.lt_keyfile &&
+ !lts.lt_cacertfile && !lts.lt_cacertdir ) {
+ /* minimum configuration not provided */
+ return LDAP_NOT_SUPPORTED;
+ }
+
+#ifdef HAVE_EBCDIC
+ /* This ASCII/EBCDIC handling is a real pain! */
+ if ( lts.lt_ciphersuite ) {
+ lts.lt_ciphersuite = LDAP_STRDUP( lts.lt_ciphersuite );
+ __atoe( lts.lt_ciphersuite );
+ }
+ if ( lts.lt_cacertfile ) {
+ lts.lt_cacertfile = LDAP_STRDUP( lts.lt_cacertfile );
+ __atoe( lts.lt_cacertfile );
+ }
+ if ( lts.lt_certfile ) {
+ lts.lt_certfile = LDAP_STRDUP( lts.lt_certfile );
+ __atoe( lts.lt_certfile );
+ }
+ if ( lts.lt_keyfile ) {
+ lts.lt_keyfile = LDAP_STRDUP( lts.lt_keyfile );
+ __atoe( lts.lt_keyfile );
+ }
+ if ( lts.lt_crlfile ) {
+ lts.lt_crlfile = LDAP_STRDUP( lts.lt_crlfile );
+ __atoe( lts.lt_crlfile );
+ }
+ if ( lts.lt_cacertdir ) {
+ lts.lt_cacertdir = LDAP_STRDUP( lts.lt_cacertdir );
+ __atoe( lts.lt_cacertdir );
+ }
+ if ( lts.lt_dhfile ) {
+ lts.lt_dhfile = LDAP_STRDUP( lts.lt_dhfile );
+ __atoe( lts.lt_dhfile );
+ }
+#endif
+ lo->ldo_tls_ctx = ti->ti_ctx_new( lo );
+ if ( lo->ldo_tls_ctx == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not allocate default ctx.\n",
+ 0,0,0);
+ rc = -1;
+ goto error_exit;
+ }
+
+ rc = ti->ti_ctx_init( lo, <s, is_server );
+
+error_exit:
+ if ( rc < 0 && lo->ldo_tls_ctx != NULL ) {
+ ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
+ lo->ldo_tls_ctx = NULL;
+ }
+#ifdef HAVE_EBCDIC
+ LDAP_FREE( lts.lt_ciphersuite );
+ LDAP_FREE( lts.lt_cacertfile );
+ LDAP_FREE( lts.lt_certfile );
+ LDAP_FREE( lts.lt_keyfile );
+ LDAP_FREE( lts.lt_crlfile );
+ LDAP_FREE( lts.lt_cacertdir );
+ LDAP_FREE( lts.lt_dhfile );
+#endif
+ return rc;
+}
+
+/*
+ * initialize the default context
+ */
+int
+ldap_pvt_tls_init_def_ctx( int is_server )
+{
+ struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
+ int rc;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &tls_def_ctx_mutex );
+#endif
+ rc = ldap_int_tls_init_ctx( lo, is_server );
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
+#endif
+ return rc;
+}
+
+static tls_session *
+alloc_handle( void *ctx_arg, int is_server )
+{
+ tls_ctx *ctx;
+ tls_session *ssl;
+
+ if ( ctx_arg ) {
+ ctx = ctx_arg;
+ } else {
+ struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
+ if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL;
+ ctx = lo->ldo_tls_ctx;
+ }
+
+ ssl = ctx->tc_impl->ti_session_new( ctx, is_server );
+ if ( ssl == NULL ) {
+ Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0);
+ return NULL;
+ }
+ return ssl;
+}
+
+static int
+update_flags( Sockbuf *sb, tls_session * ssl, int rc )
+{
+ sb->sb_trans_needs_read = 0;
+ sb->sb_trans_needs_write = 0;
+
+ return ssl->ts_impl->ti_session_upflags( sb, ssl, rc );
+}
+
+/*
+ * Call this to do a TLS connect on a sockbuf. ctx_arg can be
+ * a SSL_CTX * or NULL, in which case the default ctx is used.
+ *
+ * Return value:
+ *
+ * 0 - Success. Connection is ready for communication.
+ * <0 - Error. Can't create a TLS stream.
+ * >0 - Partial success.
+ * Do a select (using information from lber_pvt_sb_needs_{read,write}
+ * and call again.
+ */
+
+static int
+ldap_int_tls_connect( LDAP *ld, LDAPConn *conn )
+{
+ Sockbuf *sb = conn->lconn_sb;
+ int err;
+ tls_session *ssl = NULL;
+
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
+ if ( !ssl ) {
+ struct ldapoptions *lo;
+ tls_ctx *ctx;
+
+ ctx = ld->ld_options.ldo_tls_ctx;
+
+ ssl = alloc_handle( ctx, 0 );
+
+ if ( ssl == NULL ) return -1;
+
+#ifdef LDAP_DEBUG
+ ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
+#endif
+ ber_sockbuf_add_io( sb, ssl->ts_impl->ti_sbio,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
+
+ lo = LDAP_INT_GLOBAL_OPT();
+ if( ctx == NULL ) {
+ ctx = lo->ldo_tls_ctx;
+ ld->ld_options.ldo_tls_ctx = ctx;
+ tls_ctx_ref( ctx );
+ }
+ if ( ld->ld_options.ldo_tls_connect_cb )
+ ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx,
+ ld->ld_options.ldo_tls_connect_arg );
+ if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb !=
+ ld->ld_options.ldo_tls_connect_cb )
+ lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg );
+ }
+
+ err = ssl->ts_impl->ti_session_connect( ld, ssl );
+
+#ifdef HAVE_WINSOCK
+ errno = WSAGetLastError();
+#endif
+
+ if ( err < 0 )
+ {
+ char buf[256], *msg;
+ if ( update_flags( sb, ssl, err )) {
+ return 1;
+ }
+
+ msg = ssl->ts_impl->ti_session_errmsg( err, buf, sizeof(buf) );
+ if ( msg ) {
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP( msg );
+#ifdef HAVE_EBCDIC
+ if ( ld->ld_error ) __etoa(ld->ld_error);
+#endif
+ }
+
+ Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n",
+ ld->ld_error ? ld->ld_error : "" ,0,0);
+
+ ber_sockbuf_remove_io( sb, ssl->ts_impl->ti_sbio,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#endif
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Call this to do a TLS accept on a sockbuf.
+ * Everything else is the same as with tls_connect.
+ */
+int
+ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg )
+{
+ int err;
+ tls_session *ssl = NULL;
+
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
+ if ( !ssl ) {
+ ssl = alloc_handle( ctx_arg, 1 );
+ if ( ssl == NULL ) return -1;
+
+#ifdef LDAP_DEBUG
+ ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" );
+#endif
+ ber_sockbuf_add_io( sb, ssl->ts_impl->ti_sbio,
+ LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
+ }
+
+ err = ssl->ts_impl->ti_session_accept( ssl );
+
+#ifdef HAVE_WINSOCK
+ errno = WSAGetLastError();
+#endif
+
+ if ( err < 0 )
+ {
+ char buf[256];
+ if ( update_flags( sb, ssl, err )) return 1;
+
+ Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
+ ssl->ts_impl->ti_session_errmsg( err, buf, sizeof(buf) ),0,0 );
+
+ ber_sockbuf_remove_io( sb, ssl->ts_impl->ti_sbio,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#ifdef LDAP_DEBUG
+ ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
+ LBER_SBIOD_LEVEL_TRANSPORT );
+#endif
+ return -1;
+ }
+ return 0;
+}
+
+int
+ldap_pvt_tls_inplace ( Sockbuf *sb )
+{
+ tls_session *ssl = NULL;
+
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
+ return ssl != NULL;
+}
+
+int
+ldap_tls_inplace( LDAP *ld )
+{
+ Sockbuf *sb = NULL;
+
+ if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) {
+ sb = ld->ld_defconn->lconn_sb;
+
+ } else if ( ld->ld_sb ) {
+ sb = ld->ld_sb;
+
+ } else {
+ return 0;
+ }
+
+ return ldap_pvt_tls_inplace( sb );
+}
+
+int
+ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn,
+ LDAPDN_rewrite_dummy *func, unsigned flags )
+{
+ tls_session *session = s;
+ struct berval bvdn;
+ int rc;
+
+ rc = session->ts_impl->ti_session_peer_dn( session, &bvdn );
+ if ( rc ) return rc;
+
+ rc = ldap_X509dn2bv( &bvdn, dn,
+ (LDAPDN_rewrite_func *)func, flags);
+ return rc;
+}
+
+int
+ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
+{
+ tls_session *session = s;
+
+ return session->ts_impl->ti_session_chkhost( ld, session, name_in );
+}
+
+int
+ldap_int_tls_config( LDAP *ld, int option, const char *arg )
+{
+ int i;
+
+ switch( option ) {
+ case LDAP_OPT_X_TLS_CACERTFILE:
+ case LDAP_OPT_X_TLS_CACERTDIR:
+ case LDAP_OPT_X_TLS_CERTFILE:
+ case LDAP_OPT_X_TLS_KEYFILE:
+ case LDAP_OPT_X_TLS_RANDOM_FILE:
+ case LDAP_OPT_X_TLS_CIPHER_SUITE:
+ case LDAP_OPT_X_TLS_DHFILE:
+ case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
+ return ldap_pvt_tls_set_option( ld, option, (void *) arg );
+
+ case LDAP_OPT_X_TLS_REQUIRE_CERT:
+ case LDAP_OPT_X_TLS:
+ i = -1;
+ if ( strcasecmp( arg, "never" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_NEVER ;
+
+ } else if ( strcasecmp( arg, "demand" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_DEMAND ;
+
+ } else if ( strcasecmp( arg, "allow" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_ALLOW ;
+
+ } else if ( strcasecmp( arg, "try" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_TRY ;
+
+ } else if ( ( strcasecmp( arg, "hard" ) == 0 ) ||
+ ( strcasecmp( arg, "on" ) == 0 ) ||
+ ( strcasecmp( arg, "yes" ) == 0) ||
+ ( strcasecmp( arg, "true" ) == 0 ) )
+ {
+ i = LDAP_OPT_X_TLS_HARD ;
+ }
+
+ if (i >= 0) {
+ return ldap_pvt_tls_set_option( ld, option, &i );
+ }
+ return -1;
+ case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
+ i = -1;
+ if ( strcasecmp( arg, "none" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_CRL_NONE ;
+ } else if ( strcasecmp( arg, "peer" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_CRL_PEER ;
+ } else if ( strcasecmp( arg, "all" ) == 0 ) {
+ i = LDAP_OPT_X_TLS_CRL_ALL ;
+ }
+ if (i >= 0) {
+ return ldap_pvt_tls_set_option( ld, option, &i );
+ }
+ return -1;
+ }
+ return -1;
+}
+
+int
+ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg )
+{
+ struct ldapoptions *lo;
+
+ if( ld != NULL ) {
+ assert( LDAP_VALID( ld ) );
+
+ if( !LDAP_VALID( ld ) ) {
+ return LDAP_OPT_ERROR;
+ }
+
+ lo = &ld->ld_options;
+
+ } else {
+ /* Get pointer to global option structure */
+ lo = LDAP_INT_GLOBAL_OPT();
+ if ( lo == NULL ) {
+ return LDAP_NO_MEMORY;
+ }
+ }
+
+ switch( option ) {
+ case LDAP_OPT_X_TLS:
+ *(int *)arg = lo->ldo_tls_mode;
+ break;
+ case LDAP_OPT_X_TLS_CTX:
+ *(void **)arg = lo->ldo_tls_ctx;
+ if ( lo->ldo_tls_ctx ) {
+ tls_ctx_ref( lo->ldo_tls_ctx );
+ }
+ break;
+ case LDAP_OPT_X_TLS_CACERTFILE:
+ *(char **)arg = lo->ldo_tls_cacertfile ?
+ LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_CACERTDIR:
+ *(char **)arg = lo->ldo_tls_cacertdir ?
+ LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_CERTFILE:
+ *(char **)arg = lo->ldo_tls_certfile ?
+ LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_KEYFILE:
+ *(char **)arg = lo->ldo_tls_keyfile ?
+ LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_DHFILE:
+ *(char **)arg = lo->ldo_tls_dhfile ?
+ LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
+ *(char **)arg = lo->ldo_tls_crlfile ?
+ LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_REQUIRE_CERT:
+ *(int *)arg = lo->ldo_tls_require_cert;
+ break;
+ case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
+ *(int *)arg = lo->ldo_tls_crlcheck;
+ break;
+ case LDAP_OPT_X_TLS_CIPHER_SUITE:
+ *(char **)arg = lo->ldo_tls_ciphersuite ?
+ LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_RANDOM_FILE: /* OpenSSL only */
+ *(char **)arg = lo->ldo_tls_randfile ?
+ LDAP_STRDUP( lo->ldo_tls_randfile ) : NULL;
+ break;
+ case LDAP_OPT_X_TLS_SSL_CTX: {
+ void *retval = 0;
+ if ( ld != NULL ) {
+ LDAPConn *conn = ld->ld_defconn;
+ if ( conn != NULL ) {
+ Sockbuf *sb = conn->lconn_sb;
+ retval = ldap_pvt_tls_sb_ctx( sb );
+ }
+ }
+ *(void **)arg = retval;
+ break;
+ }
+ case LDAP_OPT_X_TLS_CONNECT_CB:
+ *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb;
+ break;
+ case LDAP_OPT_X_TLS_CONNECT_ARG:
+ *(void **)arg = lo->ldo_tls_connect_arg;
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+int
+ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg )
+{
+ struct ldapoptions *lo;
+
+ if( ld != NULL ) {
+ assert( LDAP_VALID( ld ) );
+
+ if( !LDAP_VALID( ld ) ) {
+ return LDAP_OPT_ERROR;
+ }
+
+ lo = &ld->ld_options;
+
+ } else {
+ /* Get pointer to global option structure */
+ lo = LDAP_INT_GLOBAL_OPT();
+ if ( lo == NULL ) {
+ return LDAP_NO_MEMORY;
+ }
+ }
+
+ switch( option ) {
+ case LDAP_OPT_X_TLS:
+ if ( !arg ) return -1;
+
+ switch( *(int *) arg ) {
+ case LDAP_OPT_X_TLS_NEVER:
+ case LDAP_OPT_X_TLS_DEMAND:
+ case LDAP_OPT_X_TLS_ALLOW:
+ case LDAP_OPT_X_TLS_TRY:
+ case LDAP_OPT_X_TLS_HARD:
+ if (lo != NULL) {
+ lo->ldo_tls_mode = *(int *)arg;
+ }
+
+ return 0;
+ }
+ return -1;
+
+ case LDAP_OPT_X_TLS_CTX:
+ if ( lo->ldo_tls_ctx )
+ ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
+ lo->ldo_tls_ctx = arg;
+ tls_ctx_ref( lo->ldo_tls_ctx );
+ return 0;
+ case LDAP_OPT_X_TLS_CONNECT_CB:
+ lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg;
+ return 0;
+ case LDAP_OPT_X_TLS_CONNECT_ARG:
+ lo->ldo_tls_connect_arg = arg;
+ return 0;
+ case LDAP_OPT_X_TLS_CACERTFILE:
+ if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile );
+ lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+ case LDAP_OPT_X_TLS_CACERTDIR:
+ if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir );
+ lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+ case LDAP_OPT_X_TLS_CERTFILE:
+ if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile );
+ lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+ case LDAP_OPT_X_TLS_KEYFILE:
+ if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile );
+ lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+ case LDAP_OPT_X_TLS_DHFILE:
+ if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile );
+ lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+ case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */
+ if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
+ lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+ case LDAP_OPT_X_TLS_REQUIRE_CERT:
+ if ( !arg ) return -1;
+ switch( *(int *) arg ) {
+ case LDAP_OPT_X_TLS_NEVER:
+ case LDAP_OPT_X_TLS_DEMAND:
+ case LDAP_OPT_X_TLS_ALLOW:
+ case LDAP_OPT_X_TLS_TRY:
+ case LDAP_OPT_X_TLS_HARD:
+ lo->ldo_tls_require_cert = * (int *) arg;
+ return 0;
+ }
+ return -1;
+ case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL only */
+ if ( !arg ) return -1;
+ switch( *(int *) arg ) {
+ case LDAP_OPT_X_TLS_CRL_NONE:
+ case LDAP_OPT_X_TLS_CRL_PEER:
+ case LDAP_OPT_X_TLS_CRL_ALL:
+ lo->ldo_tls_crlcheck = * (int *) arg;
+ return 0;
+ }
+ return -1;
+ case LDAP_OPT_X_TLS_CIPHER_SUITE:
+ if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite );
+ lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ return 0;
+
+ case LDAP_OPT_X_TLS_RANDOM_FILE: /* OpenSSL only */
+ if ( ld != NULL )
+ return -1;
+ if ( lo->ldo_tls_randfile ) LDAP_FREE (lo->ldo_tls_randfile );
+ lo->ldo_tls_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
+ break;
+
+ case LDAP_OPT_X_TLS_NEWCTX:
+ if ( !arg ) return -1;
+ if ( lo->ldo_tls_ctx )
+ ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
+ lo->ldo_tls_ctx = NULL;
+ return ldap_int_tls_init_ctx( lo, *(int *)arg );
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+int
+ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv )
+{
+ Sockbuf *sb = conn->lconn_sb;
+ char *host;
+ void *ssl;
+
+ if( srv ) {
+ host = srv->lud_host;
+ } else {
+ host = conn->lconn_server->lud_host;
+ }
+
+ /* avoid NULL host */
+ if( host == NULL ) {
+ host = "localhost";
+ }
+
+ (void) tls_init( tls_impls[ld->ld_options.ldo_tls_impl] );
+
+ /*
+ * Fortunately, the lib uses blocking io...
+ */
+ if ( ldap_int_tls_connect( ld, conn ) < 0 ) {
+ ld->ld_errno = LDAP_CONNECT_ERROR;
+ return (ld->ld_errno);
+ }
+
+ ssl = ldap_pvt_tls_sb_ctx( sb );
+ assert( ssl != NULL );
+
+ /*
+ * compare host with name(s) in certificate
+ */
+ if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER) {
+ ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host );
+ if (ld->ld_errno != LDAP_SUCCESS) {
+ return ld->ld_errno;
+ }
+ }
+
+ return LDAP_SUCCESS;
+}
+
+void *
+ldap_pvt_tls_sb_ctx( Sockbuf *sb )
+{
+#ifdef HAVE_TLS
+ void *p = NULL;
+
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
+ return p;
+#endif
+ return NULL;
+}
+
+int
+ldap_pvt_tls_get_strength( void *s )
+{
+ tls_session *session = s;
+
+ return session->ts_impl->ti_session_strength( session );
+}
+
+
+int
+ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
+{
+#ifdef HAVE_TLS
+ tls_session *session = s;
+ struct berval der_dn;
+ int rc;
+
+ session->ts_impl->ti_session_my_dn( session, &der_dn );
+ rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags );
+ return rc;
+#else /* !HAVE_TLS */
+ return LDAP_NOT_SUPPORTED;
+#endif
+}
+
+int
+ldap_start_tls( LDAP *ld,
+ LDAPControl **serverctrls,
+ LDAPControl **clientctrls,
+ int *msgidp )
+{
+ return ldap_extended_operation( ld, LDAP_EXOP_START_TLS,
+ NULL, serverctrls, clientctrls, msgidp );
+}
+
+int
+ldap_install_tls( LDAP *ld )
+{
+#ifndef HAVE_TLS
+ return LDAP_NOT_SUPPORTED;
+#else
+ if ( ldap_tls_inplace( ld ) ) {
+ return LDAP_LOCAL_ERROR;
+ }
+
+ return ldap_int_tls_start( ld, ld->ld_defconn, NULL );
+#endif
+}
+
+int
+ldap_start_tls_s ( LDAP *ld,
+ LDAPControl **serverctrls,
+ LDAPControl **clientctrls )
+{
+#ifndef HAVE_TLS
+ return LDAP_NOT_SUPPORTED;
+#else
+ int rc;
+ char *rspoid = NULL;
+ struct berval *rspdata = NULL;
+
+ /* XXYYZ: this initiates operation only on default connection! */
+
+ if ( ldap_tls_inplace( ld ) ) {
+ return LDAP_LOCAL_ERROR;
+ }
+
+ rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS,
+ NULL, serverctrls, clientctrls, &rspoid, &rspdata );
+
+ if ( rspoid != NULL ) {
+ LDAP_FREE(rspoid);
+ }
+
+ if ( rspdata != NULL ) {
+ ber_bvfree( rspdata );
+ }
+
+ if ( rc == LDAP_SUCCESS ) {
+ rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL );
+ }
+
+ return rc;
+#endif
+}
+
+/* These tags probably all belong in lber.h, but they're
+ * not normally encountered when processing LDAP, so maybe
+ * they belong somewhere else instead.
+ */
+
+#define LBER_TAG_OID ((ber_tag_t) 0x06UL)
+
+/* Tags for string types used in a DirectoryString.
+ *
+ * Note that IA5string is not one of the defined choices for
+ * DirectoryString in X.520, but it gets used for email AVAs.
+ */
+#define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL)
+#define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL)
+#define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL)
+#define LBER_TAG_IA5 ((ber_tag_t) 0x16UL)
+#define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL)
+#define LBER_TAG_BMP ((ber_tag_t) 0x1eUL)
+
+static oid_name *
+find_oid( struct berval *oid )
+{
+ int i;
+
+ for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) {
+ if ( oids[i].oid.bv_len != oid->bv_len ) continue;
+ if ( !strcmp( oids[i].oid.bv_val, oid->bv_val ))
+ return &oids[i];
+ }
+ return NULL;
+}
+
+/* Convert a structured DN from an X.509 certificate into an LDAPV3 DN.
+ * x509_name must be raw DER. If func is non-NULL, the
+ * constructed DN will use numeric OIDs to identify attributeTypes,
+ * and the func() will be invoked to rewrite the DN with the given
+ * flags.
+ *
+ * Otherwise the DN will use shortNames from a hardcoded table.
+ */
+int
+ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func,
+ unsigned flags )
+{
+ LDAPDN newDN;
+ LDAPRDN newRDN;
+ LDAPAVA *newAVA, *baseAVA;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ char oids[8192], *oidptr = oids, *oidbuf = NULL;
+ void *ptrs[2048];
+ char *dn_end, *rdn_end;
+ int i, navas, nrdns, rc = LDAP_SUCCESS;
+ size_t dnsize, oidrem = sizeof(oids), oidsize = 0;
+ int csize;
+ ber_tag_t tag;
+ ber_len_t len;
+ oid_name *oidname;
+
+ struct berval Oid, Val, oid2, *in = x509_name;
+
+ assert( bv != NULL );
+
+ bv->bv_len = 0;
+ bv->bv_val = NULL;
+
+ navas = 0;
+ nrdns = 0;
+
+ /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs.
+ * An AVA is a SEQUENCE of attr and value.
+ * Count the number of AVAs and RDNs
+ */
+ ber_init2( ber, in, LBER_USE_DER );
+ tag = ber_peek_tag( ber, &len );
+ if ( tag != LBER_SEQUENCE )
+ return LDAP_DECODING_ERROR;
+
+ for ( tag = ber_first_element( ber, &len, &dn_end );
+ tag == LBER_SET;
+ tag = ber_next_element( ber, &len, dn_end )) {
+ nrdns++;
+ for ( tag = ber_first_element( ber, &len, &rdn_end );
+ tag == LBER_SEQUENCE;
+ tag = ber_next_element( ber, &len, rdn_end )) {
+ tag = ber_skip_tag( ber, &len );
+ ber_skip_data( ber, len );
+ navas++;
+ }
+ }
+
+ /* Allocate the DN/RDN/AVA stuff as a single block */
+ dnsize = sizeof(LDAPRDN) * (nrdns+1);
+ dnsize += sizeof(LDAPAVA *) * (navas+nrdns);
+ dnsize += sizeof(LDAPAVA) * navas;
+ if (dnsize > sizeof(ptrs)) {
+ newDN = (LDAPDN)LDAP_MALLOC( dnsize );
+ if ( newDN == NULL )
+ return LDAP_NO_MEMORY;
+ } else {
+ newDN = (LDAPDN)(char *)ptrs;
+ }
+
+ newDN[nrdns] = NULL;
+ newRDN = (LDAPRDN)(newDN + nrdns+1);
+ newAVA = (LDAPAVA *)(newRDN + navas + nrdns);
+ baseAVA = newAVA;
+
+ /* Rewind and start extracting */
+ ber_rewind( ber );
+
+ tag = ber_first_element( ber, &len, &dn_end );
+ for ( i = nrdns - 1; i >= 0; i-- ) {
+ newDN[i] = newRDN;
+
+ for ( tag = ber_first_element( ber, &len, &rdn_end );
+ tag == LBER_SEQUENCE;
+ tag = ber_next_element( ber, &len, rdn_end )) {
+
+ *newRDN++ = newAVA;
+ tag = ber_skip_tag( ber, &len );
+ tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM );
+ if ( tag != LBER_TAG_OID ) {
+ rc = LDAP_DECODING_ERROR;
+ goto nomem;
+ }
+
+ oid2.bv_val = oidptr;
+ oid2.bv_len = oidrem;
+ if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) {
+ rc = LDAP_DECODING_ERROR;
+ goto nomem;
+ }
+ oidname = find_oid( &oid2 );
+ if ( !oidname ) {
+ newAVA->la_attr = oid2;
+ oidptr += oid2.bv_len + 1;
+ oidrem -= oid2.bv_len + 1;
+
+ /* Running out of OID buffer space? */
+ if (oidrem < 128) {
+ if ( oidsize == 0 ) {
+ oidsize = sizeof(oids) * 2;
+ oidrem = oidsize;
+ oidbuf = LDAP_MALLOC( oidsize );
+ if ( oidbuf == NULL ) goto nomem;
+ oidptr = oidbuf;
+ } else {
+ char *old = oidbuf;
+ oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 );
+ if ( oidbuf == NULL ) goto nomem;
+ /* Buffer moved! Fix AVA pointers */
+ if ( old != oidbuf ) {
+ LDAPAVA *a;
+ long dif = oidbuf - old;
+
+ for (a=baseAVA; a<=newAVA; a++){
+ if (a->la_attr.bv_val >= old &&
+ a->la_attr.bv_val <= (old + oidsize))
+ a->la_attr.bv_val += dif;
+ }
+ }
+ oidptr = oidbuf + oidsize - oidrem;
+ oidrem += oidsize;
+ oidsize *= 2;
+ }
+ }
+ } else {
+ if ( func ) {
+ newAVA->la_attr = oidname->oid;
+ } else {
+ newAVA->la_attr = oidname->name;
+ }
+ }
+ tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM );
+ switch(tag) {
+ case LBER_TAG_UNIVERSAL:
+ /* This uses 32-bit ISO 10646-1 */
+ csize = 4; goto to_utf8;
+ case LBER_TAG_BMP:
+ /* This uses 16-bit ISO 10646-1 */
+ csize = 2; goto to_utf8;
+ case LBER_TAG_TELETEX:
+ /* This uses 8-bit, assume ISO 8859-1 */
+ csize = 1;
+to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value );
+ newAVA->la_flags |= LDAP_AVA_FREE_VALUE;
+ if (rc != LDAP_SUCCESS) goto nomem;
+ newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
+ break;
+ case LBER_TAG_UTF8:
+ newAVA->la_flags = LDAP_AVA_NONPRINTABLE;
+ /* This is already in UTF-8 encoding */
+ case LBER_TAG_IA5:
+ case LBER_TAG_PRINTABLE:
+ /* These are always 7-bit strings */
+ newAVA->la_value = Val;
+ default:
+ ;
+ }
+ newAVA->la_private = NULL;
+ newAVA->la_flags = LDAP_AVA_STRING;
+ newAVA++;
+ }
+ *newRDN++ = NULL;
+ tag = ber_next_element( ber, &len, dn_end );
+ }
+
+ if ( func ) {
+ rc = func( newDN, flags, NULL );
+ if ( rc != LDAP_SUCCESS )
+ goto nomem;
+ }
+
+ rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL );
+
+nomem:
+ for (;baseAVA < newAVA; baseAVA++) {
+ if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR)
+ LDAP_FREE( baseAVA->la_attr.bv_val );
+ if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE)
+ LDAP_FREE( baseAVA->la_value.bv_val );
+ }
+
+ if ( oidsize != 0 )
+ LDAP_FREE( oidbuf );
+ if ( newDN != (LDAPDN)(char *) ptrs )
+ LDAP_FREE( newDN );
+ return rc;
+}
+
--- /dev/null
+/* tls_g.c - Handle tls/ssl using GNUTLS. */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008 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>.
+ */
+/* ACKNOWLEDGEMENTS: GNUTLS support written by Howard Chu and
+ * Matt Backes; sponsored by The Written Word (thewrittenword.com)
+ * and Stanford University (stanford.edu).
+ */
+
+#include "portable.h"
+
+#ifdef HAVE_GNUTLS
+
+#include "ldap_config.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+#include <ac/param.h>
+#include <ac/dirent.h>
+
+#include "ldap-int.h"
+#include "ldap-tls.h"
+
+#ifdef LDAP_R_COMPILE
+#include <ldap_pvt_thread.h>
+#endif
+
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <gcrypt.h>
+
+#define DH_BITS (1024)
+
+typedef struct tls_cipher_suite {
+ const char *name;
+ gnutls_kx_algorithm_t kx;
+ gnutls_cipher_algorithm_t cipher;
+ gnutls_mac_algorithm_t mac;
+ gnutls_protocol_t version;
+} tls_cipher_suite;
+
+typedef struct tlsg_ctx {
+ tls_impl *tc_impl;
+ struct ldapoptions *lo;
+ gnutls_certificate_credentials_t cred;
+ gnutls_dh_params_t dh_params;
+ unsigned long verify_depth;
+ int refcount;
+ int *kx_list;
+ int *cipher_list;
+ int *mac_list;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_t ref_mutex;
+#endif
+} tlsg_ctx;
+
+typedef struct tlsg_session {
+ tls_impl *ts_impl;
+ gnutls_session_t session;
+ tlsg_ctx *ctx;
+ struct berval peer_der_dn;
+} tlsg_session;
+
+static tls_cipher_suite *tlsg_ciphers;
+static int tlsg_n_ciphers;
+
+static int tlsg_parse_ciphers( tlsg_ctx *ctx, char *suites );
+static int tlsg_cert_verify( tlsg_session *s );
+extern tls_impl ldap_int_gnutls_impl;
+
+#ifdef LDAP_R_COMPILE
+
+static int
+tlsg_mutex_init( void **priv )
+{
+ int err = 0;
+ ldap_pvt_thread_mutex_t *lock = LDAP_MALLOC( sizeof( ldap_pvt_thread_mutex_t ));
+
+ if ( !lock )
+ err = ENOMEM;
+ if ( !err ) {
+ err = ldap_pvt_thread_mutex_init( lock );
+ if ( err )
+ LDAP_FREE( lock );
+ else
+ *priv = lock;
+ }
+ return err;
+}
+
+static int
+tlsg_mutex_destroy( void **lock )
+{
+ int err = ldap_pvt_thread_mutex_destroy( *lock );
+ LDAP_FREE( *lock );
+ return err;
+}
+
+static int
+tlsg_mutex_lock( void **lock )
+{
+ return ldap_pvt_thread_mutex_lock( *lock );
+}
+
+static int
+tlsg_mutex_unlock( void **lock )
+{
+ return ldap_pvt_thread_mutex_unlock( *lock );
+}
+
+static struct gcry_thread_cbs tlsg_thread_cbs = {
+ GCRY_THREAD_OPTION_USER,
+ NULL,
+ tlsg_mutex_init,
+ tlsg_mutex_destroy,
+ tlsg_mutex_lock,
+ tlsg_mutex_unlock,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
+};
+
+static void
+tlsg_thr_init( void )
+{
+ gcry_control (GCRYCTL_SET_THREAD_CBS, &tlsg_thread_cbs);
+}
+#endif /* LDAP_R_COMPILE */
+
+/*
+ * Initialize TLS subsystem. Should be called only once.
+ */
+static int
+tlsg_init( void )
+{
+ gnutls_global_init();
+
+ /* GNUtls cipher suite handling: The library ought to parse suite
+ * names for us, but it doesn't. It will return a list of suite names
+ * that it supports, so we can do parsing ourselves. It ought to tell
+ * us how long the list is, but it doesn't do that either, so we just
+ * have to count it manually...
+ */
+ {
+ int i = 0;
+ tls_cipher_suite *ptr, tmp;
+ char cs_id[2];
+
+ while ( gnutls_cipher_suite_info( i, cs_id, &tmp.kx, &tmp.cipher,
+ &tmp.mac, &tmp.version ))
+ i++;
+ tlsg_n_ciphers = i;
+
+ /* Store a copy */
+ tlsg_ciphers = LDAP_MALLOC(tlsg_n_ciphers * sizeof(tls_cipher_suite));
+ if ( !tlsg_ciphers )
+ return -1;
+ for ( i=0; i<tlsg_n_ciphers; i++ ) {
+ tlsg_ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
+ &tlsg_ciphers[i].kx, &tlsg_ciphers[i].cipher, &tlsg_ciphers[i].mac,
+ &tlsg_ciphers[i].version );
+ }
+ }
+ return 0;
+}
+
+/*
+ * Tear down the TLS subsystem. Should only be called once.
+ */
+static void
+tlsg_destroy( void )
+{
+ LDAP_FREE( tlsg_ciphers );
+ tlsg_ciphers = NULL;
+ tlsg_n_ciphers = 0;
+
+ gnutls_global_deinit();
+}
+
+static tls_ctx *
+tlsg_ctx_new ( struct ldapoptions *lo )
+{
+ tlsg_ctx *ctx;
+
+ ctx = ber_memcalloc ( 1, sizeof (*ctx) );
+ if ( ctx ) {
+ ctx->lo = lo;
+ if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
+ ber_memfree( ctx );
+ return NULL;
+ }
+ ctx->tc_impl = &ldap_int_gnutls_impl;
+ ctx->refcount = 1;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
+#endif
+ }
+ return (tls_ctx *)ctx;
+}
+
+static void
+tlsg_ctx_ref( tls_ctx *ctx )
+{
+ tlsg_ctx *c = (tlsg_ctx *)ctx;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &c->ref_mutex );
+#endif
+ c->refcount++;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &c->ref_mutex );
+#endif
+}
+
+static void
+tlsg_ctx_free ( tls_ctx *ctx )
+{
+ tlsg_ctx *c = (tlsg_ctx *)ctx;
+ int refcount;
+
+ if ( !c ) return;
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &c->ref_mutex );
+#endif
+ refcount = --c->refcount;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &c->ref_mutex );
+#endif
+ if ( refcount )
+ return;
+ LDAP_FREE( c->kx_list );
+ gnutls_certificate_free_credentials( c->cred );
+ ber_memfree ( c );
+}
+
+/*
+ * initialize a new TLS context
+ */
+static int
+tlsg_ctx_init( struct ldapoptions *lo, struct ldaptls *lt, int is_server )
+{
+ tlsg_ctx *ctx = lo->ldo_tls_ctx;
+ int rc;
+
+ if ( lo->ldo_tls_ciphersuite &&
+ tlsg_parse_ciphers( ctx, lt->lt_ciphersuite )) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not set cipher list %s.\n",
+ lo->ldo_tls_ciphersuite, 0, 0 );
+ return -1;
+ }
+
+ if (lo->ldo_tls_cacertdir != NULL) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: warning: cacertdir not implemented for gnutls\n",
+ NULL, NULL, NULL );
+ }
+
+ if (lo->ldo_tls_cacertfile != NULL) {
+ rc = gnutls_certificate_set_x509_trust_file(
+ ctx->cred,
+ lt->lt_cacertfile,
+ GNUTLS_X509_FMT_PEM );
+ if ( rc < 0 ) return -1;
+ }
+
+ if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
+ rc = gnutls_certificate_set_x509_key_file(
+ ctx->cred,
+ lt->lt_certfile,
+ lt->lt_keyfile,
+ GNUTLS_X509_FMT_PEM );
+ if ( rc ) return -1;
+ } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: only one of certfile and keyfile specified\n",
+ NULL, NULL, NULL );
+ return -1;
+ }
+
+ if ( lo->ldo_tls_dhfile ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: warning: ignoring dhfile\n",
+ NULL, NULL, NULL );
+ }
+
+ if ( lo->ldo_tls_crlfile ) {
+ rc = gnutls_certificate_set_x509_crl_file(
+ ctx->cred,
+ lt->lt_crlfile,
+ GNUTLS_X509_FMT_PEM );
+ if ( rc < 0 ) return -1;
+ rc = 0;
+ }
+ if ( is_server ) {
+ gnutls_dh_params_init(&ctx->dh_params);
+ gnutls_dh_params_generate2(ctx->dh_params, DH_BITS);
+ }
+ return 0;
+}
+
+static tls_session *
+tlsg_session_new ( tls_ctx * ctx, int is_server )
+{
+ tlsg_ctx *c = (tlsg_ctx *)ctx;
+ tlsg_session *session;
+
+ session = ber_memcalloc ( 1, sizeof (*session) );
+ if ( !session )
+ return NULL;
+
+ session->ctx = c;
+ session->ts_impl = &ldap_int_gnutls_impl;
+ gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
+ gnutls_set_default_priority( session->session );
+ if ( c->kx_list ) {
+ gnutls_kx_set_priority( session->session, c->kx_list );
+ gnutls_cipher_set_priority( session->session, c->cipher_list );
+ gnutls_mac_set_priority( session->session, c->mac_list );
+ }
+ if ( c->cred )
+ gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, c->cred );
+
+ if ( is_server ) {
+ int flag = 0;
+ if ( c->lo->ldo_tls_require_cert ) {
+ flag = GNUTLS_CERT_REQUEST;
+ if ( c->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
+ c->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
+ flag = GNUTLS_CERT_REQUIRE;
+ gnutls_certificate_server_set_request( session->session, flag );
+ }
+ }
+ return (tls_session *)session;
+}
+
+static int
+tlsg_session_accept( tls_session *session )
+{
+ tlsg_session *s = (tlsg_session *)session;
+ int rc;
+
+ rc = gnutls_handshake( s->session );
+ if ( rc == 0 && s->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
+ rc = tlsg_cert_verify( s );
+ if ( rc && s->ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW )
+ rc = 0;
+ }
+ return rc;
+}
+
+static int
+tlsg_session_connect( LDAP *ld, tls_session *session )
+{
+ return tlsg_session_accept( session);
+}
+
+static int
+tlsg_session_upflags( Sockbuf *sb, tls_session *session, int rc )
+{
+ tlsg_session *s = (tlsg_session *)session;
+
+ if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
+ return 0;
+
+ switch (gnutls_record_get_direction (s->session)) {
+ case 0:
+ sb->sb_trans_needs_read = 1;
+ return 1;
+ case 1:
+ sb->sb_trans_needs_write = 1;
+ return 1;
+ }
+ return 0;
+}
+
+static char *
+tlsg_session_errmsg( int rc, char *buf, size_t len )
+{
+ return (char *)gnutls_strerror( rc );
+}
+
+static void
+tlsg_x509_cert_dn( struct berval *cert, struct berval *dn, int get_subject )
+{
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ ber_tag_t tag;
+ ber_len_t len;
+ ber_int_t i;
+
+ ber_init2( ber, cert, LBER_USE_DER );
+ tag = ber_skip_tag( ber, &len ); /* Sequence */
+ tag = ber_skip_tag( ber, &len ); /* Sequence */
+ tag = ber_skip_tag( ber, &len ); /* Context + Constructed (version) */
+ if ( tag == 0xa0 ) /* Version is optional */
+ tag = ber_get_int( ber, &i ); /* Int: Version */
+ tag = ber_get_int( ber, &i ); /* Int: Serial */
+ tag = ber_skip_tag( ber, &len ); /* Sequence: Signature */
+ ber_skip_data( ber, len );
+ if ( !get_subject ) {
+ tag = ber_peek_tag( ber, &len ); /* Sequence: Issuer DN */
+ } else {
+ tag = ber_skip_tag( ber, &len );
+ ber_skip_data( ber, len );
+ tag = ber_skip_tag( ber, &len ); /* Sequence: Validity */
+ ber_skip_data( ber, len );
+ tag = ber_peek_tag( ber, &len ); /* Sequence: Subject DN */
+ }
+ len = ber_ptrlen( ber );
+ dn->bv_val = cert->bv_val + len;
+ dn->bv_len = cert->bv_len - len;
+}
+
+static int
+tlsg_session_my_dn( tls_session *session, struct berval *der_dn )
+{
+ tlsg_session *s = (tlsg_session *)session;
+ const gnutls_datum_t *x;
+ struct berval bv;
+
+ x = gnutls_certificate_get_ours( s->session );
+
+ if (!x) return LDAP_INVALID_CREDENTIALS;
+
+ bv.bv_val = x->data;
+ bv.bv_len = x->size;
+
+ tlsg_x509_cert_dn( &bv, der_dn, 1 );
+ return 0;
+}
+
+static int
+tlsg_session_peer_dn( tls_session *session, struct berval *der_dn )
+{
+ tlsg_session *s = (tlsg_session *)session;
+ if ( !s->peer_der_dn.bv_val ) {
+ const gnutls_datum_t *peer_cert_list;
+ int list_size;
+ struct berval bv;
+
+ peer_cert_list = gnutls_certificate_get_peers( s->session,
+ &list_size );
+ if ( !peer_cert_list ) return LDAP_INVALID_CREDENTIALS;
+
+ bv.bv_len = peer_cert_list->size;
+ bv.bv_val = peer_cert_list->data;
+
+ tlsg_x509_cert_dn( &bv, &s->peer_der_dn, 1 );
+ }
+ *der_dn = s->peer_der_dn;
+ return 0;
+}
+
+/* what kind of hostname were we given? */
+#define IS_DNS 0
+#define IS_IP4 1
+#define IS_IP6 2
+
+#define CN_OID "2.5.4.3"
+
+static int
+tlsg_session_chkhost( LDAP *ld, tls_session *session, const char *name_in )
+{
+ tlsg_session *s = (tlsg_session *)session;
+ int i, ret;
+ const gnutls_datum_t *peer_cert_list;
+ int list_size;
+ struct berval bv;
+ char altname[NI_MAXHOST];
+ size_t altnamesize;
+
+ gnutls_x509_crt_t cert;
+ gnutls_datum_t *x;
+ const char *name;
+ char *ptr;
+ char *domain = NULL;
+#ifdef LDAP_PF_INET6
+ struct in6_addr addr;
+#else
+ struct in_addr addr;
+#endif
+ int n, len1 = 0, len2 = 0;
+ int ntype = IS_DNS;
+ time_t now = time(0);
+
+ if( ldap_int_hostname &&
+ ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
+ {
+ name = ldap_int_hostname;
+ } else {
+ name = name_in;
+ }
+
+ peer_cert_list = gnutls_certificate_get_peers( s->session,
+ &list_size );
+ if ( !peer_cert_list ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get peer certificate.\n",
+ 0, 0, 0 );
+ /* If this was a fatal condition, things would have
+ * aborted long before now.
+ */
+ return LDAP_SUCCESS;
+ }
+ ret = gnutls_x509_crt_init( &cert );
+ if ( ret < 0 )
+ return LDAP_LOCAL_ERROR;
+ ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
+ if ( ret ) {
+ gnutls_x509_crt_deinit( cert );
+ return LDAP_LOCAL_ERROR;
+ }
+
+#ifdef LDAP_PF_INET6
+ if (name[0] == '[' && strchr(name, ']')) {
+ char *n2 = ldap_strdup(name+1);
+ *strchr(n2, ']') = 2;
+ if (inet_pton(AF_INET6, n2, &addr))
+ ntype = IS_IP6;
+ LDAP_FREE(n2);
+ } else
+#endif
+ if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
+ if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
+ }
+
+ if (ntype == IS_DNS) {
+ len1 = strlen(name);
+ domain = strchr(name, '.');
+ if (domain) {
+ len2 = len1 - (domain-name);
+ }
+ }
+
+ for ( i=0, ret=0; ret >= 0; i++ ) {
+ altnamesize = sizeof(altname);
+ ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
+ altname, &altnamesize, NULL );
+ if ( ret < 0 ) break;
+
+ /* ignore empty */
+ if ( altnamesize == 0 ) continue;
+
+ if ( ret == GNUTLS_SAN_DNSNAME ) {
+ if (ntype != IS_DNS) continue;
+
+ /* Is this an exact match? */
+ if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
+ break;
+ }
+
+ /* Is this a wildcard match? */
+ if (domain && (altname[0] == '*') && (altname[1] == '.') &&
+ (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
+ {
+ break;
+ }
+ } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
+ if (ntype == IS_DNS) continue;
+
+#ifdef LDAP_PF_INET6
+ if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
+ continue;
+ } else
+#endif
+ if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
+ continue;
+ }
+ if (!memcmp(altname, &addr, altnamesize)) {
+ break;
+ }
+ }
+ }
+ if ( ret >= 0 ) {
+ ret = LDAP_SUCCESS;
+ } else {
+ altnamesize = sizeof(altname);
+ ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
+ 0, 0, altname, &altnamesize );
+ if ( ret < 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+ ret = LDAP_CONNECT_ERROR;
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP(
+ _("TLS: unable to get CN from peer certificate"));
+
+ } else {
+ ret = LDAP_LOCAL_ERROR;
+ if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
+ ret = LDAP_SUCCESS;
+
+ } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
+ /* Is this a wildcard match? */
+ if( domain &&
+ (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
+ ret = LDAP_SUCCESS;
+ }
+ }
+ }
+
+ if( ret == LDAP_LOCAL_ERROR ) {
+ altname[altnamesize] = '\0';
+ Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
+ "common name in certificate (%s).\n",
+ name, altname, 0 );
+ ret = LDAP_CONNECT_ERROR;
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP(
+ _("TLS: hostname does not match CN in peer certificate"));
+ }
+ }
+ gnutls_x509_crt_deinit( cert );
+ return ret;
+}
+
+static int
+tlsg_session_strength( tls_session *session )
+{
+ tlsg_session *s = (tlsg_session *)session;
+ gnutls_cipher_algorithm_t c;
+
+ c = gnutls_cipher_get( s->session );
+ return gnutls_cipher_get_key_size( c ) * 8;
+}
+
+/* suites is a string of colon-separated cipher suite names. */
+static int
+tlsg_parse_ciphers( tlsg_ctx *ctx, char *suites )
+{
+ char *ptr, *end;
+ int i, j, len, num;
+ int *list, nkx = 0, ncipher = 0, nmac = 0;
+ int *kx, *cipher, *mac;
+
+ num = 0;
+ ptr = suites;
+ do {
+ end = strchr(ptr, ':');
+ if ( end )
+ len = end - ptr;
+ else
+ len = strlen(ptr);
+ for (i=0; i<tlsg_n_ciphers; i++) {
+ if ( !strncasecmp( tlsg_ciphers[i].name, ptr, len )) {
+ num++;
+ break;
+ }
+ }
+ if ( i == tlsg_n_ciphers ) {
+ /* unrecognized cipher suite */
+ return -1;
+ }
+ ptr += len + 1;
+ } while (end);
+
+ /* Space for all 3 lists */
+ list = LDAP_MALLOC( (num+1) * sizeof(int) * 3 );
+ if ( !list )
+ return -1;
+ kx = list;
+ cipher = kx+num+1;
+ mac = cipher+num+1;
+
+ ptr = suites;
+ do {
+ end = strchr(ptr, ':');
+ if ( end )
+ len = end - ptr;
+ else
+ len = strlen(ptr);
+ for (i=0; i<tlsg_n_ciphers; i++) {
+ /* For each cipher suite, insert its algorithms into
+ * their respective priority lists. Make sure they
+ * only appear once in each list.
+ */
+ if ( !strncasecmp( tlsg_ciphers[i].name, ptr, len )) {
+ for (j=0; j<nkx; j++)
+ if ( kx[j] == tlsg_ciphers[i].kx )
+ break;
+ if ( j == nkx )
+ kx[nkx++] = tlsg_ciphers[i].kx;
+ for (j=0; j<ncipher; j++)
+ if ( cipher[j] == tlsg_ciphers[i].cipher )
+ break;
+ if ( j == ncipher )
+ cipher[ncipher++] = tlsg_ciphers[i].cipher;
+ for (j=0; j<nmac; j++)
+ if ( mac[j] == tlsg_ciphers[i].mac )
+ break;
+ if ( j == nmac )
+ mac[nmac++] = tlsg_ciphers[i].mac;
+ break;
+ }
+ }
+ ptr += len + 1;
+ } while (end);
+ kx[nkx] = 0;
+ cipher[ncipher] = 0;
+ mac[nmac] = 0;
+ ctx->kx_list = kx;
+ ctx->cipher_list = cipher;
+ ctx->mac_list = mac;
+ return 0;
+}
+
+/*
+ * TLS support for LBER Sockbufs
+ */
+
+struct tls_data {
+ tlsg_session *session;
+ Sockbuf_IO_Desc *sbiod;
+};
+
+static ssize_t
+tlsg_recv( gnutls_transport_ptr_t ptr, void *buf, size_t len )
+{
+ struct tls_data *p;
+
+ if ( buf == NULL || len <= 0 ) return 0;
+
+ p = (struct tls_data *)ptr;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return 0;
+ }
+
+ return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
+}
+
+static ssize_t
+tlsg_send( gnutls_transport_ptr_t ptr, const void *buf, size_t len )
+{
+ struct tls_data *p;
+
+ if ( buf == NULL || len <= 0 ) return 0;
+
+ p = (struct tls_data *)ptr;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return 0;
+ }
+
+ return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
+}
+
+static int
+tlsg_sb_setup( Sockbuf_IO_Desc *sbiod, void *arg )
+{
+ struct tls_data *p;
+ tlsg_session *session = arg;
+
+ assert( sbiod != NULL );
+
+ p = LBER_MALLOC( sizeof( *p ) );
+ if ( p == NULL ) {
+ return -1;
+ }
+
+ gnutls_transport_set_ptr( session->session, (gnutls_transport_ptr)p );
+ gnutls_transport_set_pull_function( session->session, tlsg_recv );
+ gnutls_transport_set_push_function( session->session, tlsg_send );
+ p->session = session;
+ p->sbiod = sbiod;
+ sbiod->sbiod_pvt = p;
+ return 0;
+}
+
+static int
+tlsg_sb_remove( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ gnutls_deinit ( p->session->session );
+ LBER_FREE( p->session );
+ LBER_FREE( sbiod->sbiod_pvt );
+ sbiod->sbiod_pvt = NULL;
+ return 0;
+}
+
+static int
+tlsg_sb_close( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ gnutls_bye ( p->session->session, GNUTLS_SHUT_RDWR );
+ return 0;
+}
+
+static int
+tlsg_sb_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ if ( opt == LBER_SB_OPT_GET_SSL ) {
+ *((tlsg_session **)arg) = p->session;
+ return 1;
+
+ } else if ( opt == LBER_SB_OPT_DATA_READY ) {
+ if( gnutls_record_check_pending( p->session->session ) > 0 ) {
+ return 1;
+ }
+ }
+
+ return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
+}
+
+static ber_slen_t
+tlsg_sb_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = gnutls_record_recv ( p->session->session, buf, len );
+ switch (ret) {
+ case GNUTLS_E_INTERRUPTED:
+ case GNUTLS_E_AGAIN:
+ sbiod->sbiod_sb->sb_trans_needs_read = 1;
+ sock_errset(EWOULDBLOCK);
+ ret = 0;
+ break;
+ case GNUTLS_E_REHANDSHAKE:
+ for ( ret = gnutls_handshake ( p->session->session );
+ ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
+ ret = gnutls_handshake ( p->session->session ) );
+ sbiod->sbiod_sb->sb_trans_needs_read = 1;
+ ret = 0;
+ break;
+ default:
+ sbiod->sbiod_sb->sb_trans_needs_read = 0;
+ }
+ return ret;
+}
+
+static ber_slen_t
+tlsg_sb_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = gnutls_record_send ( p->session->session, (char *)buf, len );
+
+ if ( ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN ) {
+ sbiod->sbiod_sb->sb_trans_needs_write = 1;
+ sock_errset(EWOULDBLOCK);
+ ret = 0;
+ } else {
+ sbiod->sbiod_sb->sb_trans_needs_write = 0;
+ }
+ return ret;
+}
+
+static Sockbuf_IO tlsg_sbio =
+{
+ tlsg_sb_setup, /* sbi_setup */
+ tlsg_sb_remove, /* sbi_remove */
+ tlsg_sb_ctrl, /* sbi_ctrl */
+ tlsg_sb_read, /* sbi_read */
+ tlsg_sb_write, /* sbi_write */
+ tlsg_sb_close /* sbi_close */
+};
+
+/* Certs are not automatically varified during the handshake */
+static int
+tlsg_cert_verify( tlsg_session *ssl )
+{
+ unsigned int status = 0;
+ int err;
+ time_t now = time(0);
+
+ err = gnutls_certificate_verify_peers2( ssl->session, &status );
+ if ( err < 0 ) {
+ Debug( LDAP_DEBUG_ANY,"TLS: gnutls_certificate_verify_peers2 failed %d\n",
+ err,0,0 );
+ return -1;
+ }
+ if ( status ) {
+ Debug( LDAP_DEBUG_TRACE,"TLS: peer cert untrusted or revoked (0x%x)\n",
+ status, 0,0 );
+ return -1;
+ }
+ if ( gnutls_certificate_expiration_time_peers( ssl->session ) < now ) {
+ Debug( LDAP_DEBUG_ANY, "TLS: peer certificate is expired\n",
+ 0, 0, 0 );
+ return -1;
+ }
+ if ( gnutls_certificate_activation_time_peers( ssl->session ) > now ) {
+ Debug( LDAP_DEBUG_ANY, "TLS: peer certificate not yet active\n",
+ 0, 0, 0 );
+ return -1;
+ }
+ return 0;
+}
+
+tls_impl ldap_int_gnutls_impl = {
+ "GnuTLS",
+
+ tlsg_init,
+ tlsg_destroy,
+
+ tlsg_ctx_new,
+ tlsg_ctx_ref,
+ tlsg_ctx_free,
+ tlsg_ctx_init,
+
+ tlsg_session_new,
+ tlsg_session_connect,
+ tlsg_session_accept,
+ tlsg_session_upflags,
+ tlsg_session_errmsg,
+ tlsg_session_my_dn,
+ tlsg_session_peer_dn,
+ tlsg_session_chkhost,
+ tlsg_session_strength,
+
+ &tlsg_sbio,
+
+#ifdef LDAP_R_COMPILE
+ tlsg_thr_init,
+#else
+ NULL,
+#endif
+
+ 0
+};
+
+#endif /* HAVE_GNUTLS */
--- /dev/null
+/* tls_m.c - Handle tls/ssl using Mozilla NSS. */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008 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>.
+ */
+/* ACKNOWLEDGEMENTS: written by Howard Chu.
+ */
+
+#include "portable.h"
+
+#ifdef HAVE_MOZNSS
+
+#include "ldap_config.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+#include <ac/param.h>
+#include <ac/dirent.h>
+
+#include "ldap-int.h"
+#include "ldap-tls.h"
+
+#ifdef LDAP_R_COMPILE
+#include <ldap_pvt_thread.h>
+#endif
+
+#include <nspr.h>
+#include <nss.h>
+#include <ssl.h>
+
+typedef struct tlsm_ctx {
+ tls_impl *tc_impl;
+ PRFileDesc *tc_model;
+ int tc_refcnt;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_t tc_refmutex;
+#endif
+} tlsm_ctx;
+
+typedef struct tlsm_session {
+ tls_impl *ts_impl;
+ PRFileDesc *ts_session;
+} tlsm_session;
+
+static PRDescIdentity tlsm_layer_id;
+
+static const PRIOMethods tlsm_PR_methods;
+
+extern tls_impl ldap_int_moznss_impl;
+
+#ifdef LDAP_R_COMPILE
+
+static void
+tlsm_thr_init( void )
+{
+}
+
+#endif /* LDAP_R_COMPILE */
+
+/*
+ * Initialize TLS subsystem. Should be called only once.
+ */
+static int
+tlsm_init( void )
+{
+ PR_Init(0, 0, 0);
+
+ tlsm_layer_id = PR_GetUniqueIdentity("OpenLDAP");
+
+ if ( !NSS_IsInitialized() ) {
+ NSS_NoDB_Init("");
+
+ NSS_SetDomesticPolicy();
+ }
+
+ /* No cipher suite handling for now */
+
+ return 0;
+}
+
+/*
+ * Tear down the TLS subsystem. Should only be called once.
+ */
+static void
+tlsm_destroy( void )
+{
+ NSS_Shutdown();
+
+ PR_Cleanup();
+}
+
+static tls_ctx *
+tlsm_ctx_new ( struct ldapoptions *lo )
+{
+ tlsm_ctx *ctx;
+
+ ctx = LDAP_MALLOC( sizeof (*ctx) );
+ if ( ctx ) {
+ PRFileDesc *fd = PR_CreateIOLayerStub(tlsm_layer_id, &tlsm_PR_methods);
+ if ( fd ) {
+ ctx->tc_model = SSL_ImportFD( NULL, fd );
+ if ( ctx->tc_model ) {
+ ctx->tc_impl = &ldap_int_moznss_impl;
+ ctx->tc_refcnt = 1;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_init( &ctx->tc_refmutex );
+#endif
+ } else {
+ PR_DELETE( fd );
+ LDAP_FREE( ctx );
+ ctx = NULL;
+ }
+ } else {
+ LDAP_FREE( ctx );
+ ctx = NULL;
+ }
+ }
+ return (tls_ctx *)ctx;
+}
+
+static void
+tlsm_ctx_ref( tls_ctx *ctx )
+{
+ tlsm_ctx *c = (tlsm_ctx *)ctx;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &c->tc_refmutex );
+#endif
+ c->tc_refcnt++;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &c->tc_refmutex );
+#endif
+}
+
+static void
+tlsm_ctx_free ( tls_ctx *ctx )
+{
+ tlsm_ctx *c = (tlsm_ctx *)ctx;
+ int refcount;
+
+ if ( !c ) return;
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &c->tc_refmutex );
+#endif
+ refcount = --c->tc_refcnt;
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &c->tc_refmutex );
+#endif
+ if ( refcount )
+ return;
+ PR_Close( c->tc_model );
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_destroy( &c->tc_refmutex );
+#endif
+ LDAP_FREE( c );
+}
+
+/*
+ * initialize a new TLS context
+ */
+static int
+tlsm_ctx_init( struct ldapoptions *lo, struct ldaptls *lt, int is_server )
+{
+ tlsm_ctx *ctx = lo->ldo_tls_ctx;
+ int rc;
+
+ SSL_OptionSet( ctx->tc_model, SSL_SECURITY, PR_TRUE );
+ SSL_OptionSet( ctx->tc_model, SSL_HANDSHAKE_AS_CLIENT, !is_server );
+ SSL_OptionSet( ctx->tc_model, SSL_HANDSHAKE_AS_SERVER, is_server );
+
+ /* See SECMOD_OpenUserDB() */
+#if 0
+ if ( lo->ldo_tls_ciphersuite &&
+ tlsm_parse_ciphers( ctx, lt->lt_ciphersuite )) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not set cipher list %s.\n",
+ lo->ldo_tls_ciphersuite, 0, 0 );
+ return -1;
+ }
+
+ if (lo->ldo_tls_cacertdir != NULL) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: warning: cacertdir not implemented for gnutls\n",
+ NULL, NULL, NULL );
+ }
+
+ if (lo->ldo_tls_cacertfile != NULL) {
+ rc = gnutls_certificate_set_x509_trust_file(
+ ctx->cred,
+ lt->lt_cacertfile,
+ GNUTLS_X509_FMT_PEM );
+ if ( rc < 0 ) return -1;
+ }
+
+ if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
+ rc = gnutls_certificate_set_x509_key_file(
+ ctx->cred,
+ lt->lt_certfile,
+ lt->lt_keyfile,
+ GNUTLS_X509_FMT_PEM );
+ if ( rc ) return -1;
+ } else if ( lo->ldo_tls_certfile || lo->ldo_tls_keyfile ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: only one of certfile and keyfile specified\n",
+ NULL, NULL, NULL );
+ return -1;
+ }
+
+ if ( lo->ldo_tls_dhfile ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: warning: ignoring dhfile\n",
+ NULL, NULL, NULL );
+ }
+
+ if ( lo->ldo_tls_crlfile ) {
+ rc = gnutls_certificate_set_x509_crl_file(
+ ctx->cred,
+ lt->lt_crlfile,
+ GNUTLS_X509_FMT_PEM );
+ if ( rc < 0 ) return -1;
+ rc = 0;
+ }
+ if ( is_server ) {
+ gnutls_dh_params_init(&ctx->dh_params);
+ gnutls_dh_params_generate2(ctx->dh_params, DH_BITS);
+ }
+#endif
+ return 0;
+}
+
+static tls_session *
+tlsm_session_new ( tls_ctx * ctx, int is_server )
+{
+ tlsm_ctx *c = (tlsm_ctx *)ctx;
+ tlsm_session *session;
+ PRFileDesc *fd;
+
+ session = LDAP_MALLOC( sizeof (*session) );
+ if ( !session )
+ return NULL;
+
+ fd = PR_CreateIOLayerStub(tlsm_layer_id, &tlsm_PR_methods);
+ if ( !fd ) {
+ LDAP_FREE( session );
+ return NULL;
+ }
+
+ session->ts_session = SSL_ImportFD( c->tc_model, fd );
+ if ( !session->ts_session ) {
+ PR_DELETE( fd );
+ LDAP_FREE( session );
+ return NULL;
+ }
+
+ session->ts_impl = &ldap_int_moznss_impl;
+
+ SSL_ResetHandshake( session->ts_session, is_server );
+
+ return (tls_session *)session;
+}
+
+static int
+tlsm_session_accept( tls_session *session )
+{
+ tlsm_session *s = (tlsm_session *)session;
+
+ return SSL_ForceHandshake( s->ts_session );
+}
+
+static int
+tlsm_session_connect( LDAP *ld, tls_session *session )
+{
+ tlsm_session *s = (tlsm_session *)session;
+ int rc;
+
+ /* By default, NSS checks the cert hostname for us */
+ rc = SSL_SetURL( s->ts_session, ld->ld_options.ldo_defludp->lud_host );
+ return SSL_ForceHandshake( s->ts_session );
+}
+
+static int
+tlsm_session_upflags( Sockbuf *sb, tls_session *session, int rc )
+{
+ /* Should never happen */
+ rc = PR_GetError();
+
+ if ( rc != PR_PENDING_INTERRUPT_ERROR && rc != PR_WOULD_BLOCK_ERROR )
+ return 0;
+ return 0;
+}
+
+static char *
+tlsm_session_errmsg( int rc, char *buf, size_t len )
+{
+ int i;
+
+ rc = PR_GetError();
+ i = PR_GetErrorTextLength();
+ if ( i > len ) {
+ char *msg = LDAP_MALLOC( i+1 );
+ PR_GetErrorText( msg );
+ memcpy( buf, msg, len );
+ LDAP_FREE( msg );
+ } else if ( i ) {
+ PR_GetErrorText( buf );
+ }
+
+ return i ? buf : NULL;
+}
+
+static int
+tlsm_session_my_dn( tls_session *session, struct berval *der_dn )
+{
+ tlsm_session *s = (tlsm_session *)session;
+ CERTCertificate *cert;
+
+ cert = SSL_LocalCertificate( s->ts_session );
+ if (!cert) return LDAP_INVALID_CREDENTIALS;
+
+ der_dn->bv_val = cert->derSubject.data;
+ der_dn->bv_len = cert->derSubject.len;
+ CERT_DestroyCertificate( cert );
+ return 0;
+}
+
+static int
+tlsm_session_peer_dn( tls_session *session, struct berval *der_dn )
+{
+ tlsm_session *s = (tlsm_session *)session;
+ CERTCertificate *cert;
+
+ cert = SSL_PeerCertificate( s->ts_session );
+ if (!cert) return LDAP_INVALID_CREDENTIALS;
+
+ der_dn->bv_val = cert->derSubject.data;
+ der_dn->bv_len = cert->derSubject.len;
+ CERT_DestroyCertificate( cert );
+ return 0;
+}
+
+/* what kind of hostname were we given? */
+#define IS_DNS 0
+#define IS_IP4 1
+#define IS_IP6 2
+
+static int
+tlsm_session_chkhost( LDAP *ld, tls_session *session, const char *name_in )
+{
+/* NSS already does a hostname check */
+#if 0
+ int i, ret;
+ const gnutls_datum_t *peer_cert_list;
+ int list_size;
+ struct berval bv;
+ char altname[NI_MAXHOST];
+ size_t altnamesize;
+
+ gnutls_x509_crt_t cert;
+ gnutls_datum_t *x;
+ const char *name;
+ char *ptr;
+ char *domain = NULL;
+#ifdef LDAP_PF_INET6
+ struct in6_addr addr;
+#else
+ struct in_addr addr;
+#endif
+ int n, len1 = 0, len2 = 0;
+ int ntype = IS_DNS;
+ time_t now = time(0);
+
+ if( ldap_int_hostname &&
+ ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
+ {
+ name = ldap_int_hostname;
+ } else {
+ name = name_in;
+ }
+
+ peer_cert_list = gnutls_certificate_get_peers( session->session,
+ &list_size );
+ if ( !peer_cert_list ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get peer certificate.\n",
+ 0, 0, 0 );
+ /* If this was a fatal condition, things would have
+ * aborted long before now.
+ */
+ return LDAP_SUCCESS;
+ }
+ ret = gnutls_x509_crt_init( &cert );
+ if ( ret < 0 )
+ return LDAP_LOCAL_ERROR;
+ ret = gnutls_x509_crt_import( cert, peer_cert_list, GNUTLS_X509_FMT_DER );
+ if ( ret ) {
+ gnutls_x509_crt_deinit( cert );
+ return LDAP_LOCAL_ERROR;
+ }
+
+#ifdef LDAP_PF_INET6
+ if (name[0] == '[' && strchr(name, ']')) {
+ char *n2 = ldap_strdup(name+1);
+ *strchr(n2, ']') = 2;
+ if (inet_pton(AF_INET6, n2, &addr))
+ ntype = IS_IP6;
+ LDAP_FREE(n2);
+ } else
+#endif
+ if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
+ if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
+ }
+
+ if (ntype == IS_DNS) {
+ len1 = strlen(name);
+ domain = strchr(name, '.');
+ if (domain) {
+ len2 = len1 - (domain-name);
+ }
+ }
+
+ for ( i=0, ret=0; ret >= 0; i++ ) {
+ altnamesize = sizeof(altname);
+ ret = gnutls_x509_crt_get_subject_alt_name( cert, i,
+ altname, &altnamesize, NULL );
+ if ( ret < 0 ) break;
+
+ /* ignore empty */
+ if ( altnamesize == 0 ) continue;
+
+ if ( ret == GNUTLS_SAN_DNSNAME ) {
+ if (ntype != IS_DNS) continue;
+
+ /* Is this an exact match? */
+ if ((len1 == altnamesize) && !strncasecmp(name, altname, len1)) {
+ break;
+ }
+
+ /* Is this a wildcard match? */
+ if (domain && (altname[0] == '*') && (altname[1] == '.') &&
+ (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2))
+ {
+ break;
+ }
+ } else if ( ret == GNUTLS_SAN_IPADDRESS ) {
+ if (ntype == IS_DNS) continue;
+
+#ifdef LDAP_PF_INET6
+ if (ntype == IS_IP6 && altnamesize != sizeof(struct in6_addr)) {
+ continue;
+ } else
+#endif
+ if (ntype == IS_IP4 && altnamesize != sizeof(struct in_addr)) {
+ continue;
+ }
+ if (!memcmp(altname, &addr, altnamesize)) {
+ break;
+ }
+ }
+ }
+ if ( ret >= 0 ) {
+ ret = LDAP_SUCCESS;
+ } else {
+ altnamesize = sizeof(altname);
+ ret = gnutls_x509_crt_get_dn_by_oid( cert, CN_OID,
+ 0, 0, altname, &altnamesize );
+ if ( ret < 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+ ret = LDAP_CONNECT_ERROR;
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP(
+ _("TLS: unable to get CN from peer certificate"));
+
+ } else {
+ ret = LDAP_LOCAL_ERROR;
+ if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
+ ret = LDAP_SUCCESS;
+
+ } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
+ /* Is this a wildcard match? */
+ if( domain &&
+ (len2 == altnamesize-1) && !strncasecmp(domain, &altname[1], len2)) {
+ ret = LDAP_SUCCESS;
+ }
+ }
+ }
+
+ if( ret == LDAP_LOCAL_ERROR ) {
+ altname[altnamesize] = '\0';
+ Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
+ "common name in certificate (%s).\n",
+ name, altname, 0 );
+ ret = LDAP_CONNECT_ERROR;
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP(
+ _("TLS: hostname does not match CN in peer certificate"));
+ }
+ }
+ gnutls_x509_crt_deinit( cert );
+ return ret;
+#endif
+}
+
+static int
+tlsm_session_strength( tls_session *session )
+{
+ tlsm_session *s = (tlsm_session *)session;
+ int rc, keySize;
+
+ rc = SSL_SecurityStatus( s->ts_session, NULL, NULL, NULL, &keySize,
+ NULL, NULL );
+ return rc ? 0 : keySize;
+}
+
+/*
+ * TLS support for LBER Sockbufs
+ */
+
+struct tls_data {
+ tlsm_session *session;
+ Sockbuf_IO_Desc *sbiod;
+};
+
+
+static PRStatus PR_CALLBACK
+tlsm_PR_Close(PRFileDesc *fd)
+{
+ return PR_SUCCESS;
+}
+
+static int PR_CALLBACK
+tlsm_PR_Recv(PRFileDesc *fd, void *buf, PRInt32 len, PRIntn flags,
+ PRIntervalTime timeout)
+{
+ struct tls_data *p;
+
+ if ( buf == NULL || len <= 0 ) return 0;
+
+ p = (struct tls_data *)fd->secret;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return 0;
+ }
+
+ return LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
+}
+
+static int PR_CALLBACK
+tlsm_PR_Send(PRFileDesc *fd, const void *buf, PRInt32 len, PRIntn flags,
+ PRIntervalTime timeout)
+{
+ struct tls_data *p;
+
+ if ( buf == NULL || len <= 0 ) return 0;
+
+ p = (struct tls_data *)fd->secret;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return 0;
+ }
+
+ return LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
+}
+
+static int PR_CALLBACK
+tlsm_PR_Read(PRFileDesc *fd, void *buf, PRInt32 len)
+{
+ return tlsm_PR_Recv( fd, buf, len, 0, PR_INTERVAL_NO_TIMEOUT );
+}
+
+static int PR_CALLBACK
+tlsm_PR_Write(PRFileDesc *fd, const void *buf, PRInt32 len)
+{
+ return tlsm_PR_Send( fd, buf, len, 0, PR_INTERVAL_NO_TIMEOUT );
+}
+
+static PRStatus PR_CALLBACK
+tlsm_PR_GetPeerName(PRFileDesc *fd, PRNetAddr *addr)
+{
+ struct tls_data *p;
+ int rc;
+ ber_socklen_t len;
+
+ p = (struct tls_data *)fd->secret;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return PR_FAILURE;
+ }
+ len = sizeof(PRNetAddr);
+ return getpeername( p->sbiod->sbiod_sb->sb_fd, (struct sockaddr *)addr, &len );
+}
+
+static PRStatus PR_CALLBACK
+tlsm_PR_prs_unimp()
+{
+ PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+ return PR_FAILURE;
+}
+
+static PRFileDesc * PR_CALLBACK
+tlsm_PR_pfd_unimp()
+{
+ PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+ return NULL;
+}
+
+static PRInt16 PR_CALLBACK
+tlsm_PR_i16_unimp()
+{
+ PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+ return SECFailure;
+}
+
+static PRInt32 PR_CALLBACK
+tlsm_PR_i32_unimp()
+{
+ PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+ return SECFailure;
+}
+
+static PRInt64 PR_CALLBACK
+tlsm_PR_i64_unimp()
+{
+ PRInt64 res;
+
+ PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
+ LL_I2L(res, -1L);
+ return res;
+}
+
+static const PRIOMethods tlsm_PR_methods = {
+ PR_DESC_LAYERED,
+ tlsm_PR_Close, /* close */
+ tlsm_PR_Read, /* read */
+ tlsm_PR_Write, /* write */
+ tlsm_PR_i32_unimp, /* available */
+ tlsm_PR_i64_unimp, /* available64 */
+ tlsm_PR_prs_unimp, /* fsync */
+ tlsm_PR_i32_unimp, /* seek */
+ tlsm_PR_i64_unimp, /* seek64 */
+ tlsm_PR_prs_unimp, /* fileInfo */
+ tlsm_PR_prs_unimp, /* fileInfo64 */
+ tlsm_PR_i32_unimp, /* writev */
+ tlsm_PR_prs_unimp, /* connect */
+ tlsm_PR_pfd_unimp, /* accept */
+ tlsm_PR_prs_unimp, /* bind */
+ tlsm_PR_prs_unimp, /* listen */
+ (PRShutdownFN)tlsm_PR_Close, /* shutdown */
+ tlsm_PR_Recv, /* recv */
+ tlsm_PR_Send, /* send */
+ tlsm_PR_i32_unimp, /* recvfrom */
+ tlsm_PR_i32_unimp, /* sendto */
+ (PRPollFN)tlsm_PR_i16_unimp, /* poll */
+ tlsm_PR_i32_unimp, /* acceptread */
+ tlsm_PR_i32_unimp, /* transmitfile */
+ tlsm_PR_prs_unimp, /* getsockname */
+ tlsm_PR_GetPeerName, /* getpeername */
+ tlsm_PR_i32_unimp, /* getsockopt OBSOLETE */
+ tlsm_PR_i32_unimp, /* setsockopt OBSOLETE */
+ tlsm_PR_i32_unimp, /* getsocketoption */
+ tlsm_PR_i32_unimp, /* setsocketoption */
+ tlsm_PR_i32_unimp, /* Send a (partial) file with header/trailer*/
+ (PRConnectcontinueFN)tlsm_PR_prs_unimp, /* connectcontinue */
+ tlsm_PR_i32_unimp, /* reserved for future use */
+ tlsm_PR_i32_unimp, /* reserved for future use */
+ tlsm_PR_i32_unimp, /* reserved for future use */
+ tlsm_PR_i32_unimp /* reserved for future use */
+};
+
+static int
+tlsm_sb_setup( Sockbuf_IO_Desc *sbiod, void *arg )
+{
+ struct tls_data *p;
+ tlsm_session *session = arg;
+ PRFileDesc *fd;
+
+ assert( sbiod != NULL );
+
+ p = LBER_MALLOC( sizeof( *p ) );
+ if ( p == NULL ) {
+ return -1;
+ }
+
+ fd = PR_GetIdentitiesLayer( session->ts_session, tlsm_layer_id );
+ if ( !fd ) {
+ LBER_FREE( p );
+ return -1;
+ }
+
+ fd->secret = (PRFilePrivate *)p;
+ p->session = session;
+ p->sbiod = sbiod;
+ sbiod->sbiod_pvt = p;
+ return 0;
+}
+
+static int
+tlsm_sb_remove( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ PR_Close( p->session->ts_session );
+ LBER_FREE( p->session );
+ LBER_FREE( sbiod->sbiod_pvt );
+ sbiod->sbiod_pvt = NULL;
+ return 0;
+}
+
+static int
+tlsm_sb_close( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ PR_Shutdown( p->session->ts_session, PR_SHUTDOWN_BOTH );
+ return 0;
+}
+
+static int
+tlsm_sb_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ if ( opt == LBER_SB_OPT_GET_SSL ) {
+ *((tlsm_session **)arg) = p->session;
+ return 1;
+
+ } else if ( opt == LBER_SB_OPT_DATA_READY ) {
+ PRPollDesc pd = { p->session->ts_session, PR_POLL_READ, 0 };
+ if( PR_Poll( &pd, 1, 1 ) > 0 ) {
+ return 1;
+ }
+ }
+
+ return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
+}
+
+static ber_slen_t
+tlsm_sb_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = PR_Recv( p->session->ts_session, buf, len, 0, PR_INTERVAL_NO_TIMEOUT );
+ if ( ret < 0 ) {
+ err = PR_GetError();
+ if ( err == PR_PENDING_INTERRUPT_ERROR || err == PR_WOULD_BLOCK_ERROR ) {
+ sbiod->sbiod_sb->sb_trans_needs_read = 1;
+ sock_errset(EWOULDBLOCK);
+ }
+ } else {
+ sbiod->sbiod_sb->sb_trans_needs_read = 0;
+ }
+ return ret;
+}
+
+static ber_slen_t
+tlsm_sb_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = PR_Send( p->session->ts_session, (char *)buf, len, 0, PR_INTERVAL_NO_TIMEOUT );
+ if ( ret < 0 ) {
+ err = PR_GetError();
+ if ( err == PR_PENDING_INTERRUPT_ERROR || err == PR_WOULD_BLOCK_ERROR ) {
+ sbiod->sbiod_sb->sb_trans_needs_write = 1;
+ sock_errset(EWOULDBLOCK);
+ ret = 0;
+ }
+ } else {
+ sbiod->sbiod_sb->sb_trans_needs_write = 0;
+ }
+ return ret;
+}
+
+static Sockbuf_IO tlsm_sbio =
+{
+ tlsm_sb_setup, /* sbi_setup */
+ tlsm_sb_remove, /* sbi_remove */
+ tlsm_sb_ctrl, /* sbi_ctrl */
+ tlsm_sb_read, /* sbi_read */
+ tlsm_sb_write, /* sbi_write */
+ tlsm_sb_close /* sbi_close */
+};
+
+tls_impl ldap_int_moznss_impl = {
+ "MozNSS",
+
+ tlsm_init,
+ tlsm_destroy,
+
+ tlsm_ctx_new,
+ tlsm_ctx_ref,
+ tlsm_ctx_free,
+ tlsm_ctx_init,
+
+ tlsm_session_new,
+ tlsm_session_connect,
+ tlsm_session_accept,
+ tlsm_session_upflags,
+ tlsm_session_errmsg,
+ tlsm_session_my_dn,
+ tlsm_session_peer_dn,
+ tlsm_session_chkhost,
+ tlsm_session_strength,
+
+ &tlsm_sbio,
+
+#ifdef LDAP_R_COMPILE
+ tlsm_thr_init,
+#else
+ NULL,
+#endif
+
+ 0
+};
+
+#endif /* HAVE_MOZNSS */
--- /dev/null
+/* tls_o.c - Handle tls/ssl using SSLeay or OpenSSL */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008 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>.
+ */
+/* ACKNOWLEDGEMENTS: Rewritten by Howard Chu
+ */
+
+#include "portable.h"
+
+#ifdef HAVE_OPENSSL
+
+#include "ldap_config.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+#include <ac/param.h>
+#include <ac/dirent.h>
+
+#include "ldap-int.h"
+#include "ldap-tls.h"
+
+#ifdef LDAP_R_COMPILE
+#include <ldap_pvt_thread.h>
+#endif
+
+#ifdef HAVE_OPENSSL_SSL_H
+#include <openssl/ssl.h>
+#include <openssl/x509v3.h>
+#include <openssl/err.h>
+#include <openssl/rand.h>
+#include <openssl/safestack.h>
+#elif defined( HAVE_SSL_H )
+#include <ssl.h>
+#endif
+
+typedef struct tlso_ctx {
+ tls_impl *tc_impl;
+ SSL_CTX *tc_ctx;
+ int tc_refcnt;
+} tlso_ctx;
+
+typedef struct tlso_session {
+ tls_impl *ts_impl;
+ SSL *ts_session;
+} tlso_session;
+
+extern tls_impl ldap_int_openssl_impl;
+
+static int tlso_opt_trace = 1;
+
+static void tlso_report_error( void );
+
+static void tlso_info_cb( const SSL *ssl, int where, int ret );
+static int tlso_verify_cb( int ok, X509_STORE_CTX *ctx );
+static int tlso_verify_ok( int ok, X509_STORE_CTX *ctx );
+static RSA * tlso_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
+
+static DH * tlso_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
+
+typedef struct dhplist {
+ struct dhplist *next;
+ int keylength;
+ DH *param;
+} dhplist;
+
+static dhplist *tlso_dhparams;
+
+static int tlso_seed_PRNG( const char *randfile );
+
+#ifdef LDAP_R_COMPILE
+/*
+ * provide mutexes for the SSLeay library.
+ */
+static ldap_pvt_thread_mutex_t tlso_mutexes[CRYPTO_NUM_LOCKS];
+static ldap_pvt_thread_mutex_t tlso_dh_mutex;
+
+static void tlso_locking_cb( int mode, int type, const char *file, int line )
+{
+ if ( mode & CRYPTO_LOCK ) {
+ ldap_pvt_thread_mutex_lock( &tlso_mutexes[type] );
+ } else {
+ ldap_pvt_thread_mutex_unlock( &tlso_mutexes[type] );
+ }
+}
+
+static unsigned long tlso_thread_self( void )
+{
+ /* FIXME: CRYPTO_set_id_callback only works when ldap_pvt_thread_t
+ * is an integral type that fits in an unsigned long
+ */
+
+ /* force an error if the ldap_pvt_thread_t type is too large */
+ enum { ok = sizeof( ldap_pvt_thread_t ) <= sizeof( unsigned long ) };
+ typedef struct { int dummy: ok ? 1 : -1; } Check[ok ? 1 : -1];
+
+ return (unsigned long) ldap_pvt_thread_self();
+}
+
+static void tlso_thr_init( void )
+{
+ int i;
+
+ for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
+ ldap_pvt_thread_mutex_init( &tlso_mutexes[i] );
+ }
+ ldap_pvt_thread_mutex_init( &tlso_dh_mutex );
+ CRYPTO_set_locking_callback( tlso_locking_cb );
+ CRYPTO_set_id_callback( tlso_thread_self );
+}
+#endif /* LDAP_R_COMPILE */
+
+static STACK_OF(X509_NAME) *
+tlso_ca_list( char * bundle, char * dir )
+{
+ STACK_OF(X509_NAME) *ca_list = NULL;
+
+ if ( bundle ) {
+ ca_list = SSL_load_client_CA_file( bundle );
+ }
+#if defined(HAVE_DIRENT_H) || defined(dirent)
+ if ( dir ) {
+ int freeit = 0;
+
+ if ( !ca_list ) {
+ ca_list = sk_X509_NAME_new_null();
+ freeit = 1;
+ }
+ if ( !SSL_add_dir_cert_subjects_to_stack( ca_list, dir ) &&
+ freeit ) {
+ sk_X509_NAME_free( ca_list );
+ ca_list = NULL;
+ }
+ }
+#endif
+ return ca_list;
+}
+
+/*
+ * Initialize TLS subsystem. Should be called only once.
+ */
+static int
+tlso_init( void )
+{
+ struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
+#ifdef HAVE_EBCDIC
+ {
+ char *file = LDAP_STRDUP( lo->ldo_tls_randfile );
+ if ( file ) __atoe( file );
+ (void) tlso_seed_PRNG( file );
+ LDAP_FREE( file );
+ }
+#else
+ (void) tlso_seed_PRNG( lo->ldo_tls_randfile );
+#endif
+
+ SSL_load_error_strings();
+ SSLeay_add_ssl_algorithms();
+
+ /* FIXME: mod_ssl does this */
+ X509V3_add_standard_extensions();
+
+ return 0;
+}
+
+/*
+ * Tear down the TLS subsystem. Should only be called once.
+ */
+static void
+tlso_destroy( void )
+{
+ struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
+
+ EVP_cleanup();
+ ERR_remove_state(0);
+ ERR_free_strings();
+
+ if ( lo->ldo_tls_randfile ) {
+ LDAP_FREE( lo->ldo_tls_randfile );
+ lo->ldo_tls_randfile = NULL;
+ }
+}
+
+static tls_ctx *
+tlso_ctx_new( struct ldapoptions *lo )
+{
+ tlso_ctx *ctx = LDAP_MALLOC( sizeof(tlso_ctx) );
+ if ( ctx ) {
+ ctx->tc_ctx = SSL_CTX_new( SSLv23_method() );
+ if ( ctx->tc_ctx ) {
+ ctx->tc_impl = &ldap_int_openssl_impl;
+ ctx->tc_refcnt = 1;
+ } else {
+ LDAP_FREE( ctx );
+ ctx = NULL;
+ }
+ }
+ return (tls_ctx *)ctx;
+}
+
+static void
+tlso_ctx_ref( tls_ctx *ctx )
+{
+ tlso_ctx *c = (tlso_ctx *)ctx;
+ c->tc_refcnt++;
+}
+
+static void
+tlso_ctx_free ( tls_ctx *ctx )
+{
+ tlso_ctx *c = (tlso_ctx *)ctx;
+ c->tc_refcnt--;
+ if ( c->tc_refcnt < 1 ) {
+ SSL_CTX_free( c->tc_ctx );
+ LDAP_FREE( c );
+ }
+}
+
+/*
+ * initialize a new TLS context
+ */
+static int
+tlso_ctx_init( struct ldapoptions *lo, struct ldaptls *lt, int is_server )
+{
+ tlso_ctx *tc = (tlso_ctx *)lo->ldo_tls_ctx;
+ SSL_CTX *ctx = tc->tc_ctx;
+ int i;
+
+ if ( is_server ) {
+ SSL_CTX_set_session_id_context( ctx,
+ (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
+ }
+
+ if ( lo->ldo_tls_ciphersuite &&
+ !SSL_CTX_set_cipher_list( ctx, lt->lt_ciphersuite ) )
+ {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not set cipher list %s.\n",
+ lo->ldo_tls_ciphersuite, 0, 0 );
+ tlso_report_error();
+ return -1;
+ }
+
+ if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
+ if ( !SSL_CTX_load_verify_locations( ctx,
+ lt->lt_cacertfile, lt->lt_cacertdir ) ||
+ !SSL_CTX_set_default_verify_paths( ctx ) )
+ {
+ Debug( LDAP_DEBUG_ANY, "TLS: "
+ "could not load verify locations (file:`%s',dir:`%s').\n",
+ lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
+ lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
+ 0 );
+ tlso_report_error();
+ return -1;
+ }
+
+ if ( is_server ) {
+ STACK_OF(X509_NAME) *calist;
+ /* List of CA names to send to a client */
+ calist = tlso_ca_list( lt->lt_cacertfile, lt->lt_cacertdir );
+ if ( !calist ) {
+ Debug( LDAP_DEBUG_ANY, "TLS: "
+ "could not load client CA list (file:`%s',dir:`%s').\n",
+ lo->ldo_tls_cacertfile ? lo->ldo_tls_cacertfile : "",
+ lo->ldo_tls_cacertdir ? lo->ldo_tls_cacertdir : "",
+ 0 );
+ tlso_report_error();
+ return -1;
+ }
+
+ SSL_CTX_set_client_CA_list( ctx, calist );
+ }
+ }
+
+ if ( lo->ldo_tls_certfile &&
+ !SSL_CTX_use_certificate_file( ctx,
+ lt->lt_certfile, SSL_FILETYPE_PEM ) )
+ {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not use certificate `%s'.\n",
+ lo->ldo_tls_certfile,0,0);
+ tlso_report_error();
+ return -1;
+ }
+
+ /* Key validity is checked automatically if cert has already been set */
+ if ( lo->ldo_tls_keyfile &&
+ !SSL_CTX_use_PrivateKey_file( ctx,
+ lt->lt_keyfile, SSL_FILETYPE_PEM ) )
+ {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not use key file `%s'.\n",
+ lo->ldo_tls_keyfile,0,0);
+ tlso_report_error();
+ return -1;
+ }
+
+ if ( lo->ldo_tls_dhfile ) {
+ DH *dh = NULL;
+ BIO *bio;
+ dhplist *p;
+
+ if (( bio=BIO_new_file( lt->lt_dhfile,"r" )) == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: could not use DH parameters file `%s'.\n",
+ lo->ldo_tls_dhfile,0,0);
+ tlso_report_error();
+ return -1;
+ }
+ while (( dh=PEM_read_bio_DHparams( bio, NULL, NULL, NULL ))) {
+ p = LDAP_MALLOC( sizeof(dhplist) );
+ if ( p != NULL ) {
+ p->keylength = DH_size( dh ) * 8;
+ p->param = dh;
+ p->next = tlso_dhparams;
+ tlso_dhparams = p;
+ }
+ }
+ BIO_free( bio );
+ }
+
+ if ( tlso_opt_trace ) {
+ SSL_CTX_set_info_callback( ctx, tlso_info_cb );
+ }
+
+ i = SSL_VERIFY_NONE;
+ if ( lo->ldo_tls_require_cert ) {
+ i = SSL_VERIFY_PEER;
+ if ( lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
+ lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD ) {
+ i |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
+ }
+ }
+
+ SSL_CTX_set_verify( ctx, i,
+ lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
+ tlso_verify_ok : tlso_verify_cb );
+ SSL_CTX_set_tmp_rsa_callback( ctx, tlso_tmp_rsa_cb );
+ if ( lo->ldo_tls_dhfile ) {
+ SSL_CTX_set_tmp_dh_callback( ctx, tlso_tmp_dh_cb );
+ }
+#ifdef HAVE_OPENSSL_CRL
+ if ( lo->ldo_tls_crlcheck ) {
+ X509_STORE *x509_s = SSL_CTX_get_cert_store( ctx );
+ if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_PEER ) {
+ X509_STORE_set_flags( x509_s, X509_V_FLAG_CRL_CHECK );
+ } else if ( lo->ldo_tls_crlcheck == LDAP_OPT_X_TLS_CRL_ALL ) {
+ X509_STORE_set_flags( x509_s,
+ X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL );
+ }
+ }
+#endif
+ return 0;
+}
+
+static tls_session *
+tlso_session_new( tls_ctx *ctx, int is_server )
+{
+ tlso_ctx *c = (tlso_ctx *)ctx;
+ tlso_session *s = LDAP_MALLOC( sizeof(tlso_session));
+ if ( s ) {
+ s->ts_session = SSL_new( c->tc_ctx );
+ if ( s->ts_session ) {
+ s->ts_impl = &ldap_int_openssl_impl;
+ } else {
+ LDAP_FREE( s );
+ s = NULL;
+ }
+ }
+ return (tls_session *)s;
+}
+
+static int
+tlso_session_connect( LDAP *ld, tls_session *sess )
+{
+ tlso_session *s = (tlso_session *)sess;
+
+ /* Caller expects 0 = success, OpenSSL returns 1 = success */
+ return SSL_connect( s->ts_session ) - 1;
+}
+
+static int
+tlso_session_accept( tls_session *sess )
+{
+ tlso_session *s = (tlso_session *)sess;
+
+ /* Caller expects 0 = success, OpenSSL returns 1 = success */
+ return SSL_accept( s->ts_session ) - 1;
+}
+
+static int
+tlso_session_upflags( Sockbuf *sb, tls_session *sess, int rc )
+{
+ tlso_session *s = (tlso_session *)sess;
+
+ /* 1 was subtracted above, offset it back now */
+ rc = SSL_get_error(s->ts_session, rc+1);
+ if (rc == SSL_ERROR_WANT_READ) {
+ sb->sb_trans_needs_read = 1;
+ return 1;
+
+ } else if (rc == SSL_ERROR_WANT_WRITE) {
+ sb->sb_trans_needs_write = 1;
+ return 1;
+
+ } else if (rc == SSL_ERROR_WANT_CONNECT) {
+ return 1;
+ }
+ return 0;
+}
+
+static char *
+tlso_session_errmsg( int rc, char *buf, size_t len )
+{
+ rc = ERR_peek_error();
+ if ( rc ) {
+ ERR_error_string_n( rc, buf, len );
+ return buf;
+ }
+ return NULL;
+}
+
+static int
+tlso_session_my_dn( tls_session *sess, struct berval *der_dn )
+{
+ tlso_session *s = (tlso_session *)sess;
+ X509 *x;
+ X509_NAME *xn;
+
+ x = SSL_get_certificate( s->ts_session );
+
+ if (!x) return LDAP_INVALID_CREDENTIALS;
+
+ xn = X509_get_subject_name(x);
+ der_dn->bv_len = i2d_X509_NAME( xn, NULL );
+ der_dn->bv_val = xn->bytes->data;
+ return 0;
+}
+
+static X509 *
+tlso_get_cert( SSL *s )
+{
+ /* If peer cert was bad, treat as if no cert was given */
+ if (SSL_get_verify_result(s)) {
+ return NULL;
+ }
+ return SSL_get_peer_certificate(s);
+}
+
+static int
+tlso_session_peer_dn( tls_session *sess, struct berval *der_dn )
+{
+ tlso_session *s = (tlso_session *)sess;
+ X509 *x = tlso_get_cert( s->ts_session );
+ X509_NAME *xn;
+
+ if ( !x )
+ return LDAP_INVALID_CREDENTIALS;
+
+ xn = X509_get_subject_name(x);
+ der_dn->bv_len = i2d_X509_NAME( xn, NULL );
+ der_dn->bv_val = xn->bytes->data;
+ return 0;
+}
+
+/* what kind of hostname were we given? */
+#define IS_DNS 0
+#define IS_IP4 1
+#define IS_IP6 2
+
+static int
+tlso_session_chkhost( LDAP *ld, tls_session *sess, const char *name_in )
+{
+ tlso_session *s = (tlso_session *)sess;
+ int i, ret = LDAP_LOCAL_ERROR;
+ X509 *x;
+ const char *name;
+ char *ptr;
+ int ntype = IS_DNS;
+#ifdef LDAP_PF_INET6
+ struct in6_addr addr;
+#else
+ struct in_addr addr;
+#endif
+
+ if( ldap_int_hostname &&
+ ( !name_in || !strcasecmp( name_in, "localhost" ) ) )
+ {
+ name = ldap_int_hostname;
+ } else {
+ name = name_in;
+ }
+
+ x = tlso_get_cert(s->ts_session);
+ if (!x) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get peer certificate.\n",
+ 0, 0, 0 );
+ /* If this was a fatal condition, things would have
+ * aborted long before now.
+ */
+ return LDAP_SUCCESS;
+ }
+
+#ifdef LDAP_PF_INET6
+ if (name[0] == '[' && strchr(name, ']')) {
+ char *n2 = ldap_strdup(name+1);
+ *strchr(n2, ']') = 2;
+ if (inet_pton(AF_INET6, n2, &addr))
+ ntype = IS_IP6;
+ LDAP_FREE(n2);
+ } else
+#endif
+ if ((ptr = strrchr(name, '.')) && isdigit((unsigned char)ptr[1])) {
+ if (inet_aton(name, (struct in_addr *)&addr)) ntype = IS_IP4;
+ }
+
+ i = X509_get_ext_by_NID(x, NID_subject_alt_name, -1);
+ if (i >= 0) {
+ X509_EXTENSION *ex;
+ STACK_OF(GENERAL_NAME) *alt;
+
+ ex = X509_get_ext(x, i);
+ alt = X509V3_EXT_d2i(ex);
+ if (alt) {
+ int n, len1 = 0, len2 = 0;
+ char *domain = NULL;
+ GENERAL_NAME *gn;
+
+ if (ntype == IS_DNS) {
+ len1 = strlen(name);
+ domain = strchr(name, '.');
+ if (domain) {
+ len2 = len1 - (domain-name);
+ }
+ }
+ n = sk_GENERAL_NAME_num(alt);
+ for (i=0; i<n; i++) {
+ char *sn;
+ int sl;
+ gn = sk_GENERAL_NAME_value(alt, i);
+ if (gn->type == GEN_DNS) {
+ if (ntype != IS_DNS) continue;
+
+ sn = (char *) ASN1_STRING_data(gn->d.ia5);
+ sl = ASN1_STRING_length(gn->d.ia5);
+
+ /* ignore empty */
+ if (sl == 0) continue;
+
+ /* Is this an exact match? */
+ if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
+ break;
+ }
+
+ /* Is this a wildcard match? */
+ if (domain && (sn[0] == '*') && (sn[1] == '.') &&
+ (len2 == sl-1) && !strncasecmp(domain, &sn[1], len2))
+ {
+ break;
+ }
+
+ } else if (gn->type == GEN_IPADD) {
+ if (ntype == IS_DNS) continue;
+
+ sn = (char *) ASN1_STRING_data(gn->d.ia5);
+ sl = ASN1_STRING_length(gn->d.ia5);
+
+#ifdef LDAP_PF_INET6
+ if (ntype == IS_IP6 && sl != sizeof(struct in6_addr)) {
+ continue;
+ } else
+#endif
+ if (ntype == IS_IP4 && sl != sizeof(struct in_addr)) {
+ continue;
+ }
+ if (!memcmp(sn, &addr, sl)) {
+ break;
+ }
+ }
+ }
+
+ GENERAL_NAMES_free(alt);
+ if (i < n) { /* Found a match */
+ ret = LDAP_SUCCESS;
+ }
+ }
+ }
+
+ if (ret != LDAP_SUCCESS) {
+ X509_NAME *xn;
+ char buf[2048];
+ buf[0] = '\0';
+
+ xn = X509_get_subject_name(x);
+ if( X509_NAME_get_text_by_NID( xn, NID_commonName,
+ buf, sizeof(buf)) == -1)
+ {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+ ret = LDAP_CONNECT_ERROR;
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP(
+ _("TLS: unable to get CN from peer certificate"));
+
+ } else if (strcasecmp(name, buf) == 0 ) {
+ ret = LDAP_SUCCESS;
+
+ } else if (( buf[0] == '*' ) && ( buf[1] == '.' )) {
+ char *domain = strchr(name, '.');
+ if( domain ) {
+ size_t dlen = 0;
+ size_t sl;
+
+ sl = strlen(name);
+ dlen = sl - (domain-name);
+ sl = strlen(buf);
+
+ /* Is this a wildcard match? */
+ if ((dlen == sl-1) && !strncasecmp(domain, &buf[1], dlen)) {
+ ret = LDAP_SUCCESS;
+ }
+ }
+ }
+
+ if( ret == LDAP_LOCAL_ERROR ) {
+ Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
+ "common name in certificate (%s).\n",
+ name, buf, 0 );
+ ret = LDAP_CONNECT_ERROR;
+ if ( ld->ld_error ) {
+ LDAP_FREE( ld->ld_error );
+ }
+ ld->ld_error = LDAP_STRDUP(
+ _("TLS: hostname does not match CN in peer certificate"));
+ }
+ }
+ X509_free(x);
+ return ret;
+}
+
+static int
+tlso_session_strength( tls_session *sess )
+{
+ tlso_session *s = (tlso_session *)sess;
+ SSL_CIPHER *c;
+
+ c = SSL_get_current_cipher(s->ts_session);
+ return SSL_CIPHER_get_bits(c, NULL);
+}
+
+/*
+ * TLS support for LBER Sockbufs
+ */
+
+struct tls_data {
+ tlso_session *session;
+ Sockbuf_IO_Desc *sbiod;
+};
+
+static int
+tlso_bio_create( BIO *b ) {
+ b->init = 1;
+ b->num = 0;
+ b->ptr = NULL;
+ b->flags = 0;
+ return 1;
+}
+
+static int
+tlso_bio_destroy( BIO *b )
+{
+ if ( b == NULL ) return 0;
+
+ b->ptr = NULL; /* sb_tls_remove() will free it */
+ b->init = 0;
+ b->flags = 0;
+ return 1;
+}
+
+static int
+tlso_bio_read( BIO *b, char *buf, int len )
+{
+ struct tls_data *p;
+ int ret;
+
+ if ( buf == NULL || len <= 0 ) return 0;
+
+ p = (struct tls_data *)b->ptr;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return 0;
+ }
+
+ ret = LBER_SBIOD_READ_NEXT( p->sbiod, buf, len );
+
+ BIO_clear_retry_flags( b );
+ if ( ret < 0 ) {
+ int err = sock_errno();
+ if ( err == EAGAIN || err == EWOULDBLOCK ) {
+ BIO_set_retry_read( b );
+ }
+ }
+
+ return ret;
+}
+
+static int
+tlso_bio_write( BIO *b, const char *buf, int len )
+{
+ struct tls_data *p;
+ int ret;
+
+ if ( buf == NULL || len <= 0 ) return 0;
+
+ p = (struct tls_data *)b->ptr;
+
+ if ( p == NULL || p->sbiod == NULL ) {
+ return 0;
+ }
+
+ ret = LBER_SBIOD_WRITE_NEXT( p->sbiod, (char *)buf, len );
+
+ BIO_clear_retry_flags( b );
+ if ( ret < 0 ) {
+ int err = sock_errno();
+ if ( err == EAGAIN || err == EWOULDBLOCK ) {
+ BIO_set_retry_write( b );
+ }
+ }
+
+ return ret;
+}
+
+static long
+tlso_bio_ctrl( BIO *b, int cmd, long num, void *ptr )
+{
+ if ( cmd == BIO_CTRL_FLUSH ) {
+ /* The OpenSSL library needs this */
+ return 1;
+ }
+ return 0;
+}
+
+static int
+tlso_bio_gets( BIO *b, char *buf, int len )
+{
+ return -1;
+}
+
+static int
+tlso_bio_puts( BIO *b, const char *str )
+{
+ return tlso_bio_write( b, str, strlen( str ) );
+}
+
+static BIO_METHOD tlso_bio_method =
+{
+ ( 100 | 0x400 ), /* it's a source/sink BIO */
+ "sockbuf glue",
+ tlso_bio_write,
+ tlso_bio_read,
+ tlso_bio_puts,
+ tlso_bio_gets,
+ tlso_bio_ctrl,
+ tlso_bio_create,
+ tlso_bio_destroy
+};
+
+static int
+tlso_sb_setup( Sockbuf_IO_Desc *sbiod, void *arg )
+{
+ struct tls_data *p;
+ BIO *bio;
+
+ assert( sbiod != NULL );
+
+ p = LBER_MALLOC( sizeof( *p ) );
+ if ( p == NULL ) {
+ return -1;
+ }
+
+ p->session = arg;
+ p->sbiod = sbiod;
+ bio = BIO_new( &tlso_bio_method );
+ bio->ptr = (void *)p;
+ SSL_set_bio( p->session->ts_session, bio, bio );
+ sbiod->sbiod_pvt = p;
+ return 0;
+}
+
+static int
+tlso_sb_remove( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ SSL_free( p->session->ts_session );
+ LDAP_FREE( p->session );
+ LBER_FREE( sbiod->sbiod_pvt );
+ sbiod->sbiod_pvt = NULL;
+ return 0;
+}
+
+static int
+tlso_sb_close( Sockbuf_IO_Desc *sbiod )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+ SSL_shutdown( p->session->ts_session );
+ return 0;
+}
+
+static int
+tlso_sb_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
+{
+ struct tls_data *p;
+
+ assert( sbiod != NULL );
+ assert( sbiod->sbiod_pvt != NULL );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ if ( opt == LBER_SB_OPT_GET_SSL ) {
+ *((tlso_session **)arg) = p->session;
+ return 1;
+
+ } else if ( opt == LBER_SB_OPT_DATA_READY ) {
+ if( SSL_pending( p->session->ts_session ) > 0 ) {
+ return 1;
+ }
+ }
+
+ return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
+}
+
+static ber_slen_t
+tlso_sb_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = SSL_read( p->session->ts_session, (char *)buf, len );
+#ifdef HAVE_WINSOCK
+ errno = WSAGetLastError();
+#endif
+ err = SSL_get_error( p->session->ts_session, ret );
+ if (err == SSL_ERROR_WANT_READ ) {
+ sbiod->sbiod_sb->sb_trans_needs_read = 1;
+ sock_errset(EWOULDBLOCK);
+ }
+ else
+ sbiod->sbiod_sb->sb_trans_needs_read = 0;
+ return ret;
+}
+
+static ber_slen_t
+tlso_sb_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
+{
+ struct tls_data *p;
+ ber_slen_t ret;
+ int err;
+
+ assert( sbiod != NULL );
+ assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
+
+ p = (struct tls_data *)sbiod->sbiod_pvt;
+
+ ret = SSL_write( p->session->ts_session, (char *)buf, len );
+#ifdef HAVE_WINSOCK
+ errno = WSAGetLastError();
+#endif
+ err = SSL_get_error( p->session->ts_session, ret );
+ if (err == SSL_ERROR_WANT_WRITE ) {
+ sbiod->sbiod_sb->sb_trans_needs_write = 1;
+ sock_errset(EWOULDBLOCK);
+
+ } else {
+ sbiod->sbiod_sb->sb_trans_needs_write = 0;
+ }
+ return ret;
+}
+
+static Sockbuf_IO tlso_sbio =
+{
+ tlso_sb_setup, /* sbi_setup */
+ tlso_sb_remove, /* sbi_remove */
+ tlso_sb_ctrl, /* sbi_ctrl */
+ tlso_sb_read, /* sbi_read */
+ tlso_sb_write, /* sbi_write */
+ tlso_sb_close /* sbi_close */
+};
+
+/* Derived from openssl/apps/s_cb.c */
+static void
+tlso_info_cb( const SSL *ssl, int where, int ret )
+{
+ int w;
+ char *op;
+ char *state = (char *) SSL_state_string_long( (SSL *)ssl );
+
+ w = where & ~SSL_ST_MASK;
+ if ( w & SSL_ST_CONNECT ) {
+ op = "SSL_connect";
+ } else if ( w & SSL_ST_ACCEPT ) {
+ op = "SSL_accept";
+ } else {
+ op = "undefined";
+ }
+
+#ifdef HAVE_EBCDIC
+ if ( state ) {
+ state = LDAP_STRDUP( state );
+ __etoa( state );
+ }
+#endif
+ if ( where & SSL_CB_LOOP ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "TLS trace: %s:%s\n",
+ op, state, 0 );
+
+ } else if ( where & SSL_CB_ALERT ) {
+ char *atype = (char *) SSL_alert_type_string_long( ret );
+ char *adesc = (char *) SSL_alert_desc_string_long( ret );
+ op = ( where & SSL_CB_READ ) ? "read" : "write";
+#ifdef HAVE_EBCDIC
+ if ( atype ) {
+ atype = LDAP_STRDUP( atype );
+ __etoa( atype );
+ }
+ if ( adesc ) {
+ adesc = LDAP_STRDUP( adesc );
+ __etoa( adesc );
+ }
+#endif
+ Debug( LDAP_DEBUG_TRACE,
+ "TLS trace: SSL3 alert %s:%s:%s\n",
+ op, atype, adesc );
+#ifdef HAVE_EBCDIC
+ if ( atype ) LDAP_FREE( atype );
+ if ( adesc ) LDAP_FREE( adesc );
+#endif
+ } else if ( where & SSL_CB_EXIT ) {
+ if ( ret == 0 ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "TLS trace: %s:failed in %s\n",
+ op, state, 0 );
+ } else if ( ret < 0 ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "TLS trace: %s:error in %s\n",
+ op, state, 0 );
+ }
+ }
+#ifdef HAVE_EBCDIC
+ if ( state ) LDAP_FREE( state );
+#endif
+}
+
+static int
+tlso_verify_cb( int ok, X509_STORE_CTX *ctx )
+{
+ X509 *cert;
+ int errnum;
+ int errdepth;
+ X509_NAME *subject;
+ X509_NAME *issuer;
+ char *sname;
+ char *iname;
+ char *certerr = NULL;
+
+ cert = X509_STORE_CTX_get_current_cert( ctx );
+ errnum = X509_STORE_CTX_get_error( ctx );
+ errdepth = X509_STORE_CTX_get_error_depth( ctx );
+
+ /*
+ * X509_get_*_name return pointers to the internal copies of
+ * those things requested. So do not free them.
+ */
+ subject = X509_get_subject_name( cert );
+ issuer = X509_get_issuer_name( cert );
+ /* X509_NAME_oneline, if passed a NULL buf, allocate memomry */
+ sname = X509_NAME_oneline( subject, NULL, 0 );
+ iname = X509_NAME_oneline( issuer, NULL, 0 );
+ if ( !ok ) certerr = (char *)X509_verify_cert_error_string( errnum );
+#ifdef HAVE_EBCDIC
+ if ( sname ) __etoa( sname );
+ if ( iname ) __etoa( iname );
+ if ( certerr ) {
+ certerr = LDAP_STRDUP( certerr );
+ __etoa( certerr );
+ }
+#endif
+ Debug( LDAP_DEBUG_TRACE,
+ "TLS certificate verification: depth: %d, err: %d, subject: %s,",
+ errdepth, errnum,
+ sname ? sname : "-unknown-" );
+ Debug( LDAP_DEBUG_TRACE, " issuer: %s\n", iname ? iname : "-unknown-", 0, 0 );
+ if ( !ok ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS certificate verification: Error, %s\n",
+ certerr, 0, 0 );
+ }
+ if ( sname )
+ CRYPTO_free ( sname );
+ if ( iname )
+ CRYPTO_free ( iname );
+#ifdef HAVE_EBCDIC
+ if ( certerr ) LDAP_FREE( certerr );
+#endif
+ return ok;
+}
+
+static int
+tlso_verify_ok( int ok, X509_STORE_CTX *ctx )
+{
+ (void) tlso_verify_cb( ok, ctx );
+ return 1;
+}
+
+/* Inspired by ERR_print_errors in OpenSSL */
+static void
+tlso_report_error( void )
+{
+ unsigned long l;
+ char buf[200];
+ const char *file;
+ int line;
+
+ while ( ( l = ERR_get_error_line( &file, &line ) ) != 0 ) {
+ ERR_error_string_n( l, buf, sizeof( buf ) );
+#ifdef HAVE_EBCDIC
+ if ( file ) {
+ file = LDAP_STRDUP( file );
+ __etoa( (char *)file );
+ }
+ __etoa( buf );
+#endif
+ Debug( LDAP_DEBUG_ANY, "TLS: %s %s:%d\n",
+ buf, file, line );
+#ifdef HAVE_EBCDIC
+ if ( file ) LDAP_FREE( (void *)file );
+#endif
+ }
+}
+
+static RSA *
+tlso_tmp_rsa_cb( SSL *ssl, int is_export, int key_length )
+{
+ RSA *tmp_rsa;
+
+ /* FIXME: Pregenerate the key on startup */
+ /* FIXME: Who frees the key? */
+ tmp_rsa = RSA_generate_key( key_length, RSA_F4, NULL, NULL );
+
+ if ( !tmp_rsa ) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: Failed to generate temporary %d-bit %s RSA key\n",
+ key_length, is_export ? "export" : "domestic", 0 );
+ return NULL;
+ }
+ return tmp_rsa;
+}
+
+static int
+tlso_seed_PRNG( const char *randfile )
+{
+#ifndef URANDOM_DEVICE
+ /* no /dev/urandom (or equiv) */
+ long total=0;
+ char buffer[MAXPATHLEN];
+
+ if (randfile == NULL) {
+ /* The seed file is $RANDFILE if defined, otherwise $HOME/.rnd.
+ * If $HOME is not set or buffer too small to hold the pathname,
+ * an error occurs. - From RAND_file_name() man page.
+ * The fact is that when $HOME is NULL, .rnd is used.
+ */
+ randfile = RAND_file_name( buffer, sizeof( buffer ) );
+
+ } else if (RAND_egd(randfile) > 0) {
+ /* EGD socket */
+ return 0;
+ }
+
+ if (randfile == NULL) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: Use configuration file or $RANDFILE to define seed PRNG\n",
+ 0, 0, 0);
+ return -1;
+ }
+
+ total = RAND_load_file(randfile, -1);
+
+ if (RAND_status() == 0) {
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: PRNG not been seeded with enough data\n",
+ 0, 0, 0);
+ return -1;
+ }
+
+ /* assume if there was enough bits to seed that it's okay
+ * to write derived bits to the file
+ */
+ RAND_write_file(randfile);
+
+#endif
+
+ return 0;
+}
+
+struct dhinfo {
+ int keylength;
+ const char *pem;
+ size_t size;
+};
+
+
+/* From the OpenSSL 0.9.7 distro */
+static const char tlso_dhpem512[] =
+"-----BEGIN DH PARAMETERS-----\n\
+MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
+a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
+-----END DH PARAMETERS-----\n";
+
+static const char tlso_dhpem1024[] =
+"-----BEGIN DH PARAMETERS-----\n\
+MIGHAoGBAJf2QmHKtQXdKCjhPx1ottPb0PMTBH9A6FbaWMsTuKG/K3g6TG1Z1fkq\n\
+/Gz/PWk/eLI9TzFgqVAuPvr3q14a1aZeVUMTgo2oO5/y2UHe6VaJ+trqCTat3xlx\n\
+/mNbIK9HA2RgPC3gWfVLZQrY+gz3ASHHR5nXWHEyvpuZm7m3h+irAgEC\n\
+-----END DH PARAMETERS-----\n";
+
+static const char tlso_dhpem2048[] =
+"-----BEGIN DH PARAMETERS-----\n\
+MIIBCAKCAQEA7ZKJNYJFVcs7+6J2WmkEYb8h86tT0s0h2v94GRFS8Q7B4lW9aG9o\n\
+AFO5Imov5Jo0H2XMWTKKvbHbSe3fpxJmw/0hBHAY8H/W91hRGXKCeyKpNBgdL8sh\n\
+z22SrkO2qCnHJ6PLAMXy5fsKpFmFor2tRfCzrfnggTXu2YOzzK7q62bmqVdmufEo\n\
+pT8igNcLpvZxk5uBDvhakObMym9mX3rAEBoe8PwttggMYiiw7NuJKO4MqD1llGkW\n\
+aVM8U2ATsCun1IKHrRxynkE1/MJ86VHeYYX8GZt2YA8z+GuzylIOKcMH6JAWzMwA\n\
+Gbatw6QwizOhr9iMjZ0B26TE3X8LvW84wwIBAg==\n\
+-----END DH PARAMETERS-----\n";
+
+static const char tlso_dhpem4096[] =
+"-----BEGIN DH PARAMETERS-----\n\
+MIICCAKCAgEA/urRnb6vkPYc/KEGXWnbCIOaKitq7ySIq9dTH7s+Ri59zs77zty7\n\
+vfVlSe6VFTBWgYjD2XKUFmtqq6CqXMhVX5ElUDoYDpAyTH85xqNFLzFC7nKrff/H\n\
+TFKNttp22cZE9V0IPpzedPfnQkE7aUdmF9JnDyv21Z/818O93u1B4r0szdnmEvEF\n\
+bKuIxEHX+bp0ZR7RqE1AeifXGJX3d6tsd2PMAObxwwsv55RGkn50vHO4QxtTARr1\n\
+rRUV5j3B3oPMgC7Offxx+98Xn45B1/G0Prp11anDsR1PGwtaCYipqsvMwQUSJtyE\n\
+EOQWk+yFkeMe4vWv367eEi0Sd/wnC+TSXBE3pYvpYerJ8n1MceI5GQTdarJ77OW9\n\
+bGTHmxRsLSCM1jpLdPja5jjb4siAa6EHc4qN9c/iFKS3PQPJEnX7pXKBRs5f7AF3\n\
+W3RIGt+G9IVNZfXaS7Z/iCpgzgvKCs0VeqN38QsJGtC1aIkwOeyjPNy2G6jJ4yqH\n\
+ovXYt/0mc00vCWeSNS1wren0pR2EiLxX0ypjjgsU1mk/Z3b/+zVf7fZSIB+nDLjb\n\
+NPtUlJCVGnAeBK1J1nG3TQicqowOXoM6ISkdaXj5GPJdXHab2+S7cqhKGv5qC7rR\n\
+jT6sx7RUr0CNTxzLI7muV2/a4tGmj0PSdXQdsZ7tw7gbXlaWT1+MM2MCAQI=\n\
+-----END DH PARAMETERS-----\n";
+
+static const struct dhinfo tlso_dhpem[] = {
+ { 512, tlso_dhpem512, sizeof(tlso_dhpem512) },
+ { 1024, tlso_dhpem1024, sizeof(tlso_dhpem1024) },
+ { 2048, tlso_dhpem2048, sizeof(tlso_dhpem2048) },
+ { 4096, tlso_dhpem4096, sizeof(tlso_dhpem4096) },
+ { 0, NULL, 0 }
+};
+
+static DH *
+tlso_tmp_dh_cb( SSL *ssl, int is_export, int key_length )
+{
+ struct dhplist *p = NULL;
+ BIO *b = NULL;
+ DH *dh = NULL;
+ int i;
+
+ /* Do we have params of this length already? */
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_lock( &tlso_dh_mutex );
+#endif
+ for ( p = tlso_dhparams; p; p=p->next ) {
+ if ( p->keylength == key_length ) {
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &tlso_dh_mutex );
+#endif
+ return p->param;
+ }
+ }
+
+ /* No - check for hardcoded params */
+
+ for (i=0; tlso_dhpem[i].keylength; i++) {
+ if ( tlso_dhpem[i].keylength == key_length ) {
+ b = BIO_new_mem_buf( (char *)tlso_dhpem[i].pem, tlso_dhpem[i].size );
+ break;
+ }
+ }
+
+ if ( b ) {
+ dh = PEM_read_bio_DHparams( b, NULL, NULL, NULL );
+ BIO_free( b );
+ }
+
+ /* Generating on the fly is expensive/slow... */
+ if ( !dh ) {
+ dh = DH_generate_parameters( key_length, DH_GENERATOR_2, NULL, NULL );
+ }
+ if ( dh ) {
+ p = LDAP_MALLOC( sizeof(struct dhplist) );
+ if ( p != NULL ) {
+ p->keylength = key_length;
+ p->param = dh;
+ p->next = tlso_dhparams;
+ tlso_dhparams = p;
+ }
+ }
+
+#ifdef LDAP_R_COMPILE
+ ldap_pvt_thread_mutex_unlock( &tlso_dh_mutex );
+#endif
+ return dh;
+}
+
+tls_impl ldap_int_openssl_impl = {
+ "OpenSSL",
+
+ tlso_init,
+ tlso_destroy,
+
+ tlso_ctx_new,
+ tlso_ctx_ref,
+ tlso_ctx_free,
+ tlso_ctx_init,
+
+ tlso_session_new,
+ tlso_session_connect,
+ tlso_session_accept,
+ tlso_session_upflags,
+ tlso_session_errmsg,
+ tlso_session_my_dn,
+ tlso_session_peer_dn,
+ tlso_session_chkhost,
+ tlso_session_strength,
+
+ &tlso_sbio,
+
+#ifdef LDAP_R_COMPILE
+ tlso_thr_init,
+#else
+ NULL,
+#endif
+
+ 0
+};
+
+#endif /* HAVE_OPENSSL */
projects / openldap / commitdiff