return p;
}
+char *
+ldap_pvt_tls_get_peer_hostname( void *s )
+{
+ X509 *x;
+ X509_NAME *xn;
+ char buf[2048], *p;
+
+ x = SSL_get_peer_certificate((SSL *)s);
+
+ if (!x)
+ return NULL;
+
+ xn = X509_get_subject_name(x);
+
+ if ( X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf)) == -1 ) {
+ X509_free(x);
+ return NULL;
+ }
+
+ p = LDAP_STRDUP(buf);
+ X509_free(x);
+ return p;
+}
+
const char *
ldap_pvt_tls_get_peer_issuer( void *s )
{
int
ldap_pvt_tls_start ( LDAP *ld, Sockbuf *sb, void *ctx_arg )
{
+ char *peer_cert_cn, *peer_hostname;
+ void *ssl;
+
(void) ldap_pvt_tls_init();
/*
return LDAP_CONNECT_ERROR;
}
- /* FIXME: hostname of server must be compared with name in
- * certificate....
+ ssl = (void *) ldap_pvt_tls_sb_handle( sb );
+ /*
+ * compare hostname of server with name in certificate
*/
+ peer_cert_cn = ldap_pvt_tls_get_peer_hostname( ssl );
+ if ( !peer_cert_cn ) {
+ /* could not get hostname from peer certificate */
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+ return LDAP_LOCAL_ERROR;
+ }
+
+ peer_hostname = ldap_host_connected_to( sb );
+ if ( !peer_hostname ) {
+ /* could not lookup hostname */
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to reverse lookup peer hostname.\n",
+ 0, 0, 0 );
+ LDAP_FREE( peer_cert_cn );
+ return LDAP_LOCAL_ERROR;
+ }
+
+ if ( strcasecmp(peer_hostname, peer_cert_cn) != 0 ) {
+ Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
+ "common name in certificate (%s).",
+ peer_hostname, peer_cert_cn, 0 );
+ LDAP_FREE( peer_cert_cn );
+ LDAP_FREE( peer_hostname );
+ return LDAP_CONNECT_ERROR;
+
+ } else {
+ LDAP_FREE( peer_cert_cn );
+ LDAP_FREE( peer_hostname );
+ }
+
+ /*
+ * set SASL properties to TLS ssf and authid
+ */
+ {
+ const char *authid;
+ ber_len_t ssf;
+
+ /* we need to let SASL know */
+ ssf = ldap_pvt_tls_get_strength( ssl );
+ authid = ldap_pvt_tls_get_peer( ssl );
+
+ (void) ldap_int_sasl_external( ld, authid, ssf );
+ }
return LDAP_SUCCESS;
}