+++ /dev/null
-/* tls.c - Handle tls/ssl using SSLeay, OpenSSL or GNUTLS. */
-/* $OpenLDAP$ */
-/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
- *
- * Copyright 1998-2010 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"
-#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
-
-#ifdef LDAP_R_COMPILE
-#include <ldap_pvt_thread.h>
-#endif
-
-#ifdef HAVE_GNUTLS
-#include <gnutls/gnutls.h>
-#include <gnutls/x509.h>
-#include <gcrypt.h>
-
-#define DH_BITS (1024)
-
-#else
-#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
-#endif
-
-#define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \
- (void *)&sb_tls_sbio )
-
-#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;
-
-#define CN_OID oids[0].oid.bv_val
-
-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 }
-};
-
-#ifdef HAVE_TLS
-#ifdef HAVE_GNUTLS
-
-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;
-
-static tls_cipher_suite *ciphers;
-static int n_ciphers;
-
-/* sorta replacing SSL_CTX */
-typedef struct tls_ctx {
- 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
-} tls_ctx;
-
-/* sorta replacing SSL */
-typedef struct tls_session {
- tls_ctx *ctx;
- gnutls_session_t session;
- struct berval peer_der_dn;
-} tls_session;
-
-#ifdef LDAP_R_COMPILE
-
-static int
-ldap_pvt_gcry_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
-ldap_pvt_gcry_mutex_destroy( void **lock )
-{
- int err = ldap_pvt_thread_mutex_destroy( *lock );
- LDAP_FREE( *lock );
- return err;
-}
-static int
-ldap_pvt_gcry_mutex_lock( void **lock )
-{
- return ldap_pvt_thread_mutex_lock( *lock );
-}
-static int
-ldap_pvt_gcry_mutex_unlock( void **lock )
-{
- return ldap_pvt_thread_mutex_unlock( *lock );
-}
-
-static struct gcry_thread_cbs ldap_generic_thread_cbs = {
- GCRY_THREAD_OPTION_USER,
- NULL,
- ldap_pvt_gcry_mutex_init,
- ldap_pvt_gcry_mutex_destroy,
- ldap_pvt_gcry_mutex_lock,
- ldap_pvt_gcry_mutex_unlock,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
-};
-
-static void
-tls_init_threads( void )
-{
- gcry_control (GCRYCTL_SET_THREAD_CBS, &ldap_generic_thread_cbs);
-}
-#endif /* LDAP_R_COMPILE */
-
-void
-ldap_pvt_tls_ctx_free ( void *c )
-{
- int refcount;
- tls_ctx *ctx = c;
-
- if ( !ctx ) return;
-
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
-#endif
- refcount = --ctx->refcount;
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
-#endif
- if ( refcount )
- return;
- LDAP_FREE( ctx->kx_list );
- gnutls_certificate_free_credentials( ctx->cred );
- ber_memfree ( ctx );
-}
-
-static void *
-tls_ctx_new ( struct ldapoptions *lo )
-{
- tls_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->refcount = 1;
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
-#endif
- }
- return ctx;
-}
-
-static void
-tls_ctx_ref( tls_ctx *ctx )
-{
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_lock( &ctx->ref_mutex );
-#endif
- ctx->refcount++;
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_unlock( &ctx->ref_mutex );
-#endif
-}
-
-tls_session *
-tls_session_new ( tls_ctx * ctx, int is_server )
-{
- tls_session *session;
-
- session = ber_memcalloc ( 1, sizeof (*session) );
- if ( !session )
- return NULL;
-
- session->ctx = ctx;
- gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
- gnutls_set_default_priority( session->session );
- if ( ctx->kx_list ) {
- gnutls_kx_set_priority( session->session, ctx->kx_list );
- gnutls_cipher_set_priority( session->session, ctx->cipher_list );
- gnutls_mac_set_priority( session->session, ctx->mac_list );
- }
- if ( ctx->cred )
- gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, ctx->cred );
-
- if ( is_server ) {
- int flag = 0;
- if ( ctx->lo->ldo_tls_require_cert ) {
- flag = GNUTLS_CERT_REQUEST;
- if ( ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
- ctx->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
- flag = GNUTLS_CERT_REQUIRE;
- gnutls_certificate_server_set_request( session->session, flag );
- }
- }
- return session;
-}
-
-void
-tls_session_free ( tls_session * session )
-{
- ber_memfree ( session );
-}
-
-#define tls_session_connect( ssl ) gnutls_handshake( ssl->session )
-#define tls_session_accept( ssl ) gnutls_handshake( ssl->session )
-
-/* suites is a string of colon-separated cipher suite names. */
-static int
-tls_parse_ciphers( tls_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<n_ciphers; i++) {
- if ( !strncasecmp( ciphers[i].name, ptr, len )) {
- num++;
- break;
- }
- }
- if ( i == 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<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( ciphers[i].name, ptr, len )) {
- for (j=0; j<nkx; j++)
- if ( kx[j] == ciphers[i].kx )
- break;
- if ( j == nkx )
- kx[nkx++] = ciphers[i].kx;
- for (j=0; j<ncipher; j++)
- if ( cipher[j] == ciphers[i].cipher )
- break;
- if ( j == ncipher )
- cipher[ncipher++] = ciphers[i].cipher;
- for (j=0; j<nmac; j++)
- if ( mac[j] == ciphers[i].mac )
- break;
- if ( j == nmac )
- mac[nmac++] = 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;
-}
-
-#else /* OpenSSL */
-
-typedef SSL_CTX tls_ctx;
-typedef SSL tls_session;
-
-static int tls_opt_trace = 1;
-static char *tls_opt_randfile = NULL;
-
-static void tls_report_error( void );
-
-static void tls_info_cb( const SSL *ssl, int where, int ret );
-static int tls_verify_cb( int ok, X509_STORE_CTX *ctx );
-static int tls_verify_ok( int ok, X509_STORE_CTX *ctx );
-static RSA * tls_tmp_rsa_cb( SSL *ssl, int is_export, int key_length );
-
-static DH * tls_tmp_dh_cb( SSL *ssl, int is_export, int key_length );
-
-typedef struct dhplist {
- struct dhplist *next;
- int keylength;
- DH *param;
-} dhplist;
-
-static dhplist *dhparams;
-
-static int tls_seed_PRNG( const char *randfile );
-
-#ifdef LDAP_R_COMPILE
-/*
- * provide mutexes for the SSLeay library.
- */
-static ldap_pvt_thread_mutex_t tls_mutexes[CRYPTO_NUM_LOCKS];
-
-static void tls_locking_cb( int mode, int type, const char *file, int line )
-{
- if ( mode & CRYPTO_LOCK ) {
- ldap_pvt_thread_mutex_lock( &tls_mutexes[type] );
- } else {
- ldap_pvt_thread_mutex_unlock( &tls_mutexes[type] );
- }
-}
-
-static unsigned long tls_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 tls_init_threads( void )
-{
- int i;
-
- for( i=0; i< CRYPTO_NUM_LOCKS ; i++ ) {
- ldap_pvt_thread_mutex_init( &tls_mutexes[i] );
- }
- CRYPTO_set_locking_callback( tls_locking_cb );
- CRYPTO_set_id_callback( tls_thread_self );
-}
-#endif /* LDAP_R_COMPILE */
-
-void
-ldap_pvt_tls_ctx_free ( void *c )
-{
-
- SSL_CTX_free( c );
-}
-
-static void *
-tls_ctx_new( struct ldapoptions *lo )
-{
- return SSL_CTX_new( SSLv23_method() );
-}
-
-static void
-tls_ctx_ref( void *c )
-{
- SSL_CTX *ctx = c;
- CRYPTO_add( &ctx->references, 1, CRYPTO_LOCK_SSL_CTX );
-}
-
-static tls_session *
-tls_session_new( tls_ctx *ctx, int is_server )
-{
- return SSL_new( ctx );
-}
-
-#define tls_session_connect( ssl ) SSL_connect( ssl )
-#define tls_session_accept( ssl ) SSL_accept( ssl )
-
-static STACK_OF(X509_NAME) *
-get_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;
-}
-
-#endif /* HAVE_GNUTLS */
-
-#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;
- }
-#ifdef HAVE_GNUTLS
- if ( lo->ldo_tls_crlfile ) {
- LDAP_FREE( lo->ldo_tls_crlfile );
- lo->ldo_tls_crlfile = NULL;
- }
-#endif
-}
-
-/*
- * Tear down the TLS subsystem. Should only be called once.
- */
-void
-ldap_pvt_tls_destroy( void )
-{
- struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT();
-
- ldap_int_tls_destroy( lo );
-
-#ifdef HAVE_GNUTLS
- LDAP_FREE( ciphers );
- ciphers = NULL;
-
- gnutls_global_deinit();
-#else
- EVP_cleanup();
- ERR_remove_state(0);
- ERR_free_strings();
-
- if ( tls_opt_randfile ) {
- LDAP_FREE( tls_opt_randfile );
- tls_opt_randfile = NULL;
- }
-#endif
-}
-
-/*
- * Initialize TLS subsystem. Should be called only once.
- */
-int
-ldap_pvt_tls_init( void )
-{
- static int tls_initialized = 0;
-
- if ( tls_initialized++ ) return 0;
-
-#ifdef LDAP_R_COMPILE
- tls_init_threads();
- ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex );
-#endif
-
-#ifdef HAVE_GNUTLS
- 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++;
- n_ciphers = i;
-
- /* Store a copy */
- ciphers = LDAP_MALLOC(n_ciphers * sizeof(tls_cipher_suite));
- if ( !ciphers )
- return -1;
- for ( i=0; i<n_ciphers; i++ ) {
- ciphers[i].name = gnutls_cipher_suite_info( i, cs_id,
- &ciphers[i].kx, &ciphers[i].cipher, &ciphers[i].mac,
- &ciphers[i].version );
- }
- }
-
-#else /* !HAVE_GNUTLS */
-
-#ifdef HAVE_EBCDIC
- {
- char *file = LDAP_STRDUP( tls_opt_randfile );
- if ( file ) __atoe( file );
- (void) tls_seed_PRNG( file );
- LDAP_FREE( file );
- }
-#else
- (void) tls_seed_PRNG( tls_opt_randfile );
-#endif
-
- SSL_load_error_strings();
- SSLeay_add_ssl_algorithms();
-
- /* FIXME: mod_ssl does this */
- X509V3_add_standard_extensions();
-
-#endif /* HAVE_GNUTLS */
- return 0;
-}
-
-/*
- * initialize a new TLS context
- */
-static int
-ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server )
-{
- int i, rc = 0;
- char *ciphersuite = lo->ldo_tls_ciphersuite;
- char *cacertfile = lo->ldo_tls_cacertfile;
- char *cacertdir = lo->ldo_tls_cacertdir;
- char *certfile = lo->ldo_tls_certfile;
- char *keyfile = lo->ldo_tls_keyfile;
-#ifdef HAVE_GNUTLS
- char *crlfile = lo->ldo_tls_crlfile;
-#else
- char *dhfile = lo->ldo_tls_dhfile;
-#endif
-
- if ( lo->ldo_tls_ctx )
- return 0;
-
- ldap_pvt_tls_init();
-
- if ( is_server && !certfile && !keyfile && !cacertfile && !cacertdir ) {
- /* minimum configuration not provided */
- return LDAP_NOT_SUPPORTED;
- }
-
-#ifdef HAVE_EBCDIC
- /* This ASCII/EBCDIC handling is a real pain! */
- if ( ciphersuite ) {
- ciphersuite = LDAP_STRDUP( ciphersuite );
- __atoe( ciphersuite );
- }
- if ( cacertfile ) {
- cacertfile = LDAP_STRDUP( cacertfile );
- __atoe( cacertfile );
- }
- if ( certfile ) {
- certfile = LDAP_STRDUP( certfile );
- __atoe( certfile );
- }
- if ( keyfile ) {
- keyfile = LDAP_STRDUP( keyfile );
- __atoe( keyfile );
- }
-#ifdef HAVE_GNUTLS
- if ( crlfile ) {
- crlfile = LDAP_STRDUP( crlfile );
- __atoe( crlfile );
- }
-#else
- if ( cacertdir ) {
- cacertdir = LDAP_STRDUP( cacertdir );
- __atoe( cacertdir );
- }
- if ( dhfile ) {
- dhfile = LDAP_STRDUP( dhfile );
- __atoe( dhfile );
- }
-#endif
-#endif
- lo->ldo_tls_ctx = tls_ctx_new( lo );
- if ( lo->ldo_tls_ctx == NULL ) {
-#ifdef HAVE_GNUTLS
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not allocate default ctx.\n",
- 0,0,0);
-#else
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not allocate default ctx (%lu).\n",
- ERR_peek_error(),0,0);
-#endif
- rc = -1;
- goto error_exit;
- }
-
-#ifdef HAVE_GNUTLS
- if ( lo->ldo_tls_ciphersuite &&
- tls_parse_ciphers( lo->ldo_tls_ctx,
- ciphersuite )) {
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not set cipher list %s.\n",
- lo->ldo_tls_ciphersuite, 0, 0 );
- rc = -1;
- goto error_exit;
- }
-
- 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(
- ((tls_ctx*) lo->ldo_tls_ctx)->cred,
- cacertfile,
- GNUTLS_X509_FMT_PEM );
- if ( rc < 0 ) goto error_exit;
- }
-
- if ( lo->ldo_tls_certfile && lo->ldo_tls_keyfile ) {
- rc = gnutls_certificate_set_x509_key_file(
- ((tls_ctx*) lo->ldo_tls_ctx)->cred,
- certfile,
- keyfile,
- GNUTLS_X509_FMT_PEM );
- if ( rc ) goto error_exit;
- } 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 );
- rc = 1;
- goto error_exit;
- }
-
- 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(
- ((tls_ctx*) lo->ldo_tls_ctx)->cred,
- crlfile,
- GNUTLS_X509_FMT_PEM );
- if ( rc < 0 ) goto error_exit;
- rc = 0;
- }
- if ( is_server ) {
- gnutls_dh_params_init (&((tls_ctx*)
- lo->ldo_tls_ctx)->dh_params);
- gnutls_dh_params_generate2 (((tls_ctx*)
- lo->ldo_tls_ctx)->dh_params,
- DH_BITS);
- }
-
-#else /* !HAVE_GNUTLS */
-
- if ( is_server ) {
- SSL_CTX_set_session_id_context( lo->ldo_tls_ctx,
- (const unsigned char *) "OpenLDAP", sizeof("OpenLDAP")-1 );
- }
-
- if (lo->ldo_tls_protocol_min > LDAP_OPT_X_TLS_PROTOCOL_SSL3)
- SSL_CTX_set_options( lo->ldo_tls_ctx,
- SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 );
- else if (lo->ldo_tls_protocol_min > LDAP_OPT_X_TLS_PROTOCOL_SSL2)
- SSL_CTX_set_options( lo->ldo_tls_ctx, SSL_OP_NO_SSLv2 );
-
- if ( lo->ldo_tls_ciphersuite &&
- !SSL_CTX_set_cipher_list( lo->ldo_tls_ctx, ciphersuite ) )
- {
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not set cipher list %s.\n",
- lo->ldo_tls_ciphersuite, 0, 0 );
- tls_report_error();
- rc = -1;
- goto error_exit;
- }
-
- if (lo->ldo_tls_cacertfile != NULL || lo->ldo_tls_cacertdir != NULL) {
- if ( !SSL_CTX_load_verify_locations( lo->ldo_tls_ctx,
- cacertfile, cacertdir ) ||
- !SSL_CTX_set_default_verify_paths( lo->ldo_tls_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 );
- tls_report_error();
- rc = -1;
- goto error_exit;
- }
-
- if ( is_server ) {
- STACK_OF(X509_NAME) *calist;
- /* List of CA names to send to a client */
- calist = get_ca_list( cacertfile, 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 );
- tls_report_error();
- rc = -1;
- goto error_exit;
- }
-
- SSL_CTX_set_client_CA_list( lo->ldo_tls_ctx, calist );
- }
- }
-
- if ( lo->ldo_tls_certfile &&
- !SSL_CTX_use_certificate_file( lo->ldo_tls_ctx,
- certfile, SSL_FILETYPE_PEM ) )
- {
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not use certificate `%s'.\n",
- lo->ldo_tls_certfile,0,0);
- tls_report_error();
- rc = -1;
- goto error_exit;
- }
-
- /* Key validity is checked automatically if cert has already been set */
- if ( lo->ldo_tls_keyfile &&
- !SSL_CTX_use_PrivateKey_file( lo->ldo_tls_ctx,
- keyfile, SSL_FILETYPE_PEM ) )
- {
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not use key file `%s'.\n",
- lo->ldo_tls_keyfile,0,0);
- tls_report_error();
- rc = -1;
- goto error_exit;
- }
-
- if ( lo->ldo_tls_dhfile ) {
- DH *dh = NULL;
- BIO *bio;
- dhplist *p;
-
- if (( bio=BIO_new_file( dhfile,"r" )) == NULL ) {
- Debug( LDAP_DEBUG_ANY,
- "TLS: could not use DH parameters file `%s'.\n",
- lo->ldo_tls_dhfile,0,0);
- tls_report_error();
- rc = -1;
- goto error_exit;
- }
- 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 = dhparams;
- dhparams = p;
- }
- }
- BIO_free( bio );
- }
-
- if ( tls_opt_trace ) {
- SSL_CTX_set_info_callback( (SSL_CTX *)lo->ldo_tls_ctx, tls_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( lo->ldo_tls_ctx, i,
- lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_ALLOW ?
- tls_verify_ok : tls_verify_cb );
- SSL_CTX_set_tmp_rsa_callback( lo->ldo_tls_ctx, tls_tmp_rsa_cb );
- if ( lo->ldo_tls_dhfile ) {
- SSL_CTX_set_tmp_dh_callback( lo->ldo_tls_ctx, tls_tmp_dh_cb );
- }
-#ifdef HAVE_OPENSSL_CRL
- if ( lo->ldo_tls_crlcheck ) {
- X509_STORE *x509_s = SSL_CTX_get_cert_store( lo->ldo_tls_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
-
-#endif /* HAVE_GNUTLS */
-
-error_exit:
- if ( rc == -1 && lo->ldo_tls_ctx != NULL ) {
- ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx );
- lo->ldo_tls_ctx = NULL;
- }
-#ifdef HAVE_EBCDIC
- LDAP_FREE( ciphersuite );
- LDAP_FREE( cacertfile );
- LDAP_FREE( certfile );
- LDAP_FREE( keyfile );
-#ifdef HAVE_GNUTLS
- LDAP_FREE( crlfile );
-#else
- LDAP_FREE( cacertdir );
- LDAP_FREE( dhfile );
-#endif
-#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 = tls_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;
-
-#ifdef HAVE_GNUTLS
- if ( rc != GNUTLS_E_INTERRUPTED && rc != GNUTLS_E_AGAIN )
- return 0;
-
- switch (gnutls_record_get_direction (ssl->session)) {
- case 0:
- sb->sb_trans_needs_read = 1;
- return 1;
- case 1:
- sb->sb_trans_needs_write = 1;
- return 1;
- }
-#else /* !HAVE_GNUTLS */
- rc = SSL_get_error(ssl, rc);
- 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;
- }
-#endif /* HAVE_GNUTLS */
- return 0;
-}
-
-/*
- * TLS support for LBER Sockbufs
- */
-
-struct tls_data {
- tls_session *ssl;
- Sockbuf_IO_Desc *sbiod;
-};
-
-#ifdef HAVE_GNUTLS
-
-static ssize_t
-sb_gtls_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
-sb_gtls_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
-sb_tls_setup( Sockbuf_IO_Desc *sbiod, void *arg )
-{
- struct tls_data *p;
- tls_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, sb_gtls_recv );
- gnutls_transport_set_push_function( session->session, sb_gtls_send );
- p->ssl = arg;
- p->sbiod = sbiod;
- sbiod->sbiod_pvt = p;
- return 0;
-}
-
-static int
-sb_tls_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->ssl->session );
- LBER_FREE( p->ssl );
- LBER_FREE( sbiod->sbiod_pvt );
- sbiod->sbiod_pvt = NULL;
- return 0;
-}
-
-static int
-sb_tls_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->ssl->session, GNUTLS_SHUT_RDWR );
- return 0;
-}
-
-static int
-sb_tls_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 ) {
- *((tls_session **)arg) = p->ssl;
- return 1;
-
- } else if ( opt == LBER_SB_OPT_DATA_READY ) {
- if( gnutls_record_check_pending( p->ssl->session ) > 0 ) {
- return 1;
- }
- }
-
- return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
-}
-
-static ber_slen_t
-sb_tls_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->ssl->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->ssl->session );
- ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN;
- ret = gnutls_handshake ( p->ssl->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
-sb_tls_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->ssl->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;
-}
-
-#else /* !HAVE_GNUTLS */
-
-static int
-sb_tls_bio_create( BIO *b ) {
- b->init = 1;
- b->num = 0;
- b->ptr = NULL;
- b->flags = 0;
- return 1;
-}
-
-static int
-sb_tls_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
-sb_tls_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
-sb_tls_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
-sb_tls_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
-sb_tls_bio_gets( BIO *b, char *buf, int len )
-{
- return -1;
-}
-
-static int
-sb_tls_bio_puts( BIO *b, const char *str )
-{
- return sb_tls_bio_write( b, str, strlen( str ) );
-}
-
-static BIO_METHOD sb_tls_bio_method =
-{
- ( 100 | 0x400 ), /* it's a source/sink BIO */
- "sockbuf glue",
- sb_tls_bio_write,
- sb_tls_bio_read,
- sb_tls_bio_puts,
- sb_tls_bio_gets,
- sb_tls_bio_ctrl,
- sb_tls_bio_create,
- sb_tls_bio_destroy
-};
-
-static int
-sb_tls_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->ssl = (SSL *)arg;
- p->sbiod = sbiod;
- bio = BIO_new( &sb_tls_bio_method );
- bio->ptr = (void *)p;
- SSL_set_bio( p->ssl, bio, bio );
- sbiod->sbiod_pvt = p;
- return 0;
-}
-
-static int
-sb_tls_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->ssl );
- LBER_FREE( sbiod->sbiod_pvt );
- sbiod->sbiod_pvt = NULL;
- return 0;
-}
-
-static int
-sb_tls_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->ssl );
- return 0;
-}
-
-static int
-sb_tls_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 ) {
- *((SSL **)arg) = p->ssl;
- return 1;
-
- } else if ( opt == LBER_SB_OPT_DATA_READY ) {
- if( SSL_pending( p->ssl ) > 0 ) {
- return 1;
- }
- }
-
- return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
-}
-
-static ber_slen_t
-sb_tls_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->ssl, (char *)buf, len );
-#ifdef HAVE_WINSOCK
- errno = WSAGetLastError();
-#endif
- err = SSL_get_error( p->ssl, 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
-sb_tls_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->ssl, (char *)buf, len );
-#ifdef HAVE_WINSOCK
- errno = WSAGetLastError();
-#endif
- err = SSL_get_error( p->ssl, 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;
-}
-
-#endif
-
-static Sockbuf_IO sb_tls_sbio =
-{
- sb_tls_setup, /* sbi_setup */
- sb_tls_remove, /* sbi_remove */
- sb_tls_ctrl, /* sbi_ctrl */
- sb_tls_read, /* sbi_read */
- sb_tls_write, /* sbi_write */
- sb_tls_close /* sbi_close */
-};
-
-#ifdef HAVE_GNUTLS
-/* Certs are not automatically varified during the handshake */
-static int
-tls_cert_verify( tls_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;
-}
-#endif /* HAVE_GNUTLS */
-
-/*
- * 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;
-
- if ( HAS_TLS( sb ) ) {
- ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
-
- } else {
- 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, &sb_tls_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 = tls_session_connect( ssl );
-
-#ifdef HAVE_WINSOCK
- errno = WSAGetLastError();
-#endif
-
-#ifdef HAVE_GNUTLS
- if ( err < 0 )
-#else
- if ( err <= 0 )
-#endif
- {
- if ( update_flags( sb, ssl, err )) {
- return 1;
- }
-
-#ifndef HAVE_GNUTLS
- if ((err = ERR_peek_error()))
-#endif
- {
- if ( ld->ld_error ) {
- LDAP_FREE( ld->ld_error );
- }
-#ifdef HAVE_GNUTLS
- ld->ld_error = LDAP_STRDUP(gnutls_strerror( err ));
-#else
- {
- char buf[256];
- ld->ld_error = LDAP_STRDUP(ERR_error_string(err, buf));
- }
-#endif
-#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, &sb_tls_sbio,
- LBER_SBIOD_LEVEL_TRANSPORT );
-#ifdef LDAP_DEBUG
- ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
- LBER_SBIOD_LEVEL_TRANSPORT );
-#endif
- return -1;
- }
-
-#ifdef HAVE_GNUTLS
- if ( ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
- err = tls_cert_verify( ssl );
- if ( err && ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
- return err;
- }
-#endif
-
- 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;
-
- if ( HAS_TLS( sb ) ) {
- ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl );
-
- } else {
- 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, &sb_tls_sbio,
- LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl );
- }
-
- err = tls_session_accept( ssl );
-
-#ifdef HAVE_WINSOCK
- errno = WSAGetLastError();
-#endif
-
-#ifdef HAVE_GNUTLS
- if ( err < 0 )
-#else
- if ( err <= 0 )
-#endif
- {
- if ( update_flags( sb, ssl, err )) return 1;
-
-#ifdef HAVE_GNUTLS
- Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n",
- gnutls_strerror( err ),0,0 );
-#else
- Debug( LDAP_DEBUG_ANY,"TLS: can't accept.\n",0,0,0 );
- tls_report_error();
-#endif
- ber_sockbuf_remove_io( sb, &sb_tls_sbio,
- LBER_SBIOD_LEVEL_TRANSPORT );
-#ifdef LDAP_DEBUG
- ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
- LBER_SBIOD_LEVEL_TRANSPORT );
-#endif
- return -1;
- }
-
-#ifdef HAVE_GNUTLS
- if ( ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER ) {
- err = tls_cert_verify( ssl );
- if ( err && ssl->ctx->lo->ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW )
- return err;
- }
-#endif
- return 0;
-}
-
-int
-ldap_pvt_tls_inplace ( Sockbuf *sb )
-{
- return HAS_TLS( sb ) ? 1 : 0;
-}
-
-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 );
-}
-
-#ifdef HAVE_GNUTLS
-static void
-x509_cert_get_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_skip_tag( ber, &len ); /* Int: Serial (can be longer than ber_int_t) */
- ber_skip_data( ber, len );
- 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
-tls_get_cert_dn( tls_session *session, struct berval *dnbv )
-{
- if ( !session->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( session->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;
-
- x509_cert_get_dn( &bv, &session->peer_der_dn, 1 );
- *dnbv = session->peer_der_dn;
- }
- return 0;
-}
-#else /* !HAVE_GNUTLS */
-static X509 *
-tls_get_cert( SSL *s )
-{
- /* If peer cert was bad, treat as if no cert was given */
- if (SSL_get_verify_result(s)) {
- /* If we can send an alert, do so */
- if (SSL_version(s) != SSL2_VERSION) {
- ssl3_send_alert(s,SSL3_AL_WARNING,SSL3_AD_BAD_CERTIFICATE);
- }
- return NULL;
- }
- return SSL_get_peer_certificate(s);
-}
-
-static int
-tls_get_cert_dn( tls_session *session, struct berval *dnbv )
-{
- X509_NAME *xn;
- X509 *x = tls_get_cert( session );
-
- if ( !x )
- return LDAP_INVALID_CREDENTIALS;
-
- xn = X509_get_subject_name(x);
- dnbv->bv_len = i2d_X509_NAME( xn, NULL );
- dnbv->bv_val = xn->bytes->data;
- X509_free(x);
- return 0;
-}
-#endif /* HAVE_GNUTLS */
-
-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 = tls_get_cert_dn( session, &bvdn );
- if ( rc ) return rc;
-
- rc = ldap_X509dn2bv( &bvdn, dn,
- (LDAPDN_rewrite_func *)func, flags);
- return rc;
-}
-
-/* what kind of hostname were we given? */
-#define IS_DNS 0
-#define IS_IP4 1
-#define IS_IP6 2
-
-#ifdef HAVE_GNUTLS
-
-int
-ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
-{
- tls_session *session = s;
- 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, ']') = 0;
- 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;
- /* HACK: See ITS#5789 */
- if ( !len1 ) len1 = strlen( name );
- if ( len1 == altnamesize && strncasecmp(name, altname, altnamesize) == 0 ) {
- ret = LDAP_SUCCESS;
-
- } else if (( altname[0] == '*' ) && ( altname[1] == '.' )) {
- /* Is this a wildcard match? */
- /* HACK: See ITS#3134, #5938, RFC4513. */
- 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;
-}
-
-#else /* !HAVE_GNUTLS */
-
-int
-ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in )
-{
- 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 = tls_get_cert((SSL *)s);
- 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, ']') = 0;
- 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, '.');
- /* HACK: See ITS#3134, #5938, RFC4513 */
- 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;
-}
-#endif
-
-int
-ldap_pvt_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:
-#ifdef HAVE_GNUTLS
- case LDAP_OPT_X_TLS_CRLFILE:
-#endif
- 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_PROTOCOL_MIN: {
- char *next;
- long l;
- l = strtol( arg, &next, 10 );
- if ( l < 0 || l > 0xff || next == arg ||
- ( *next != '\0' && *next != '.' ) )
- return -1;
- i = l << 8;
- if (*next == '.') {
- arg = next + 1;
- l = strtol( arg, &next, 10 );
- if ( l < 0 || l > 0xff || next == arg || *next != '\0' )
- return -1;
- i += l;
- }
- return ldap_pvt_tls_set_option( ld, option, &i );
- }
-#ifdef HAVE_OPENSSL_CRL
- case LDAP_OPT_X_TLS_CRLCHECK:
- 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;
-#endif
- }
- 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;
-#ifdef HAVE_GNUTLS
- case LDAP_OPT_X_TLS_CRLFILE:
- *(char **)arg = lo->ldo_tls_crlfile ?
- LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL;
- break;
-#endif
- case LDAP_OPT_X_TLS_REQUIRE_CERT:
- *(int *)arg = lo->ldo_tls_require_cert;
- break;
-#ifdef HAVE_OPENSSL_CRL
- case LDAP_OPT_X_TLS_CRLCHECK:
- *(int *)arg = lo->ldo_tls_crlcheck;
- break;
-#endif
- 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_PROTOCOL_MIN:
- *(int *)arg = lo->ldo_tls_protocol_min;
- break;
- case LDAP_OPT_X_TLS_RANDOM_FILE:
-#ifdef HAVE_OPENSSL
- *(char **)arg = tls_opt_randfile ?
- LDAP_STRDUP( tls_opt_randfile ) : NULL;
-#else
- *(char **)arg = NULL;
-#endif
- 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;
-#ifdef HAVE_GNUTLS
- case LDAP_OPT_X_TLS_CRLFILE:
- if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile );
- lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
- return 0;
-#endif
- 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;
-#ifdef HAVE_OPENSSL_CRL
- case LDAP_OPT_X_TLS_CRLCHECK:
- 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;
-#endif
- 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_PROTOCOL_MIN:
- if ( !arg ) return -1;
- lo->ldo_tls_protocol_min = * (int *) arg;
- return 0;
- case LDAP_OPT_X_TLS_RANDOM_FILE:
- if ( ld != NULL )
- return -1;
-#ifdef HAVE_OPENSSL
- if (tls_opt_randfile ) LDAP_FREE (tls_opt_randfile );
- tls_opt_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL;
-#endif
- 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) ldap_pvt_tls_init();
-
- /*
- * 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;
-}
-
-#ifdef HAVE_OPENSSL
-/* Derived from openssl/apps/s_cb.c */
-static void
-tls_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
-tls_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
-tls_verify_ok( int ok, X509_STORE_CTX *ctx )
-{
- (void) tls_verify_cb( ok, ctx );
- return 1;
-}
-
-/* Inspired by ERR_print_errors in OpenSSL */
-static void
-tls_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 *
-tls_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
-tls_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 dhpem512[] =
-"-----BEGIN DH PARAMETERS-----\n\
-MEYCQQDaWDwW2YUiidDkr3VvTMqS3UvlM7gE+w/tlO+cikQD7VdGUNNpmdsp13Yn\n\
-a6LT1BLiGPTdHghM9tgAPnxHdOgzAgEC\n\
------END DH PARAMETERS-----\n";
-
-static const char 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 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 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 dhpem[] = {
- { 512, dhpem512, sizeof(dhpem512) },
- { 1024, dhpem1024, sizeof(dhpem1024) },
- { 2048, dhpem2048, sizeof(dhpem2048) },
- { 4096, dhpem4096, sizeof(dhpem4096) },
- { 0, NULL, 0 }
-};
-
-static DH *
-tls_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( &tls_def_ctx_mutex );
-#endif
- for ( p = dhparams; p; p=p->next ) {
- if ( p->keylength == key_length ) {
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
-#endif
- return p->param;
- }
- }
-
- /* No - check for hardcoded params */
-
- for (i=0; dhpem[i].keylength; i++) {
- if ( dhpem[i].keylength == key_length ) {
- b = BIO_new_mem_buf( (char *)dhpem[i].pem, 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 = dhparams;
- dhparams = p;
- }
- }
-
-#ifdef LDAP_R_COMPILE
- ldap_pvt_thread_mutex_unlock( &tls_def_ctx_mutex );
-#endif
- return dh;
-}
-#endif
-
-#endif /* HAVE_OPENSSL */
-
-void *
-ldap_pvt_tls_sb_ctx( Sockbuf *sb )
-{
-#ifdef HAVE_TLS
- void *p;
-
- if (HAS_TLS( sb )) {
- ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
- return p;
- }
-#endif
-
- return NULL;
-}
-
-int
-ldap_pvt_tls_get_strength( void *s )
-{
-#ifdef HAVE_OPENSSL
- SSL_CIPHER *c;
-
- c = SSL_get_current_cipher((SSL *)s);
- return SSL_CIPHER_get_bits(c, NULL);
-#elif defined(HAVE_GNUTLS)
- tls_session *session = s;
- gnutls_cipher_algorithm_t c;
-
- c = gnutls_cipher_get( session->session );
- return gnutls_cipher_get_key_size( c ) * 8;
-#else
- return 0;
-#endif
-}
-
-
-int
-ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
-{
-#ifdef HAVE_TLS
- struct berval der_dn;
- int rc;
-#ifdef HAVE_OPENSSL
- X509 *x;
- X509_NAME *xn;
-
- x = SSL_get_certificate((SSL *)s);
-
- 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;
-#elif defined(HAVE_GNUTLS)
- tls_session *session = s;
- const gnutls_datum_t *x;
- struct berval bv;
-
- x = gnutls_certificate_get_ours( session->session );
-
- if (!x) return LDAP_INVALID_CREDENTIALS;
-
- bv.bv_val = x->data;
- bv.bv_len = x->size;
-
- x509_cert_get_dn( &bv, &der_dn, 1 );
-#endif
- 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;
-}
-
projects / openldap / commitdiff