+ return HAS_TLS( sb ) ? 1 : 0;
+}
+
+void *
+ldap_pvt_tls_sb_ctx( Sockbuf *sb )
+{
+ void *p;
+
+ if (HAS_TLS( sb )) {
+ ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p );
+ return p;
+ }
+
+ return NULL;
+}
+
+int
+ldap_pvt_tls_get_strength( void *s )
+{
+ SSL_CIPHER *c;
+
+ c = SSL_get_current_cipher((SSL *)s);
+ return SSL_CIPHER_get_bits(c, NULL);
+}
+
+
+int
+ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
+{
+ X509 *x;
+ X509_NAME *xn;
+ int rc;
+
+ x = SSL_get_certificate((SSL *)s);
+
+ if (!x) return LDAP_INVALID_CREDENTIALS;
+
+ xn = X509_get_subject_name(x);
+ rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags );
+ X509_free(x);
+ return rc;
+}
+
+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);
+}
+
+int
+ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags )
+{
+ X509 *x;
+ X509_NAME *xn;
+ int rc;
+
+ x = tls_get_cert((SSL *)s);
+
+ if (!x) return LDAP_INVALID_CREDENTIALS;
+
+ xn = X509_get_subject_name(x);
+ rc = ldap_X509dn2bv(xn, dn, (LDAPDN_rewrite_func *)func, flags);
+ X509_free(x);
+ return rc;
+}
+
+char *
+ldap_pvt_tls_get_peer_hostname( void *s )
+{
+ X509 *x;
+ X509_NAME *xn;
+ char buf[2048], *p;
+ int ret;
+
+ x = tls_get_cert((SSL *)s);
+ if (!x) return NULL;
+
+ xn = X509_get_subject_name(x);
+
+ ret = X509_NAME_get_text_by_NID(xn, NID_commonName, buf, sizeof(buf));
+ if( ret == -1 ) {
+ X509_free(x);
+ return NULL;
+ }
+
+ p = LDAP_STRDUP(buf);
+ X509_free(x);
+ return p;
+}
+
+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;
+
+ 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) {
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, ERR,
+ "ldap_pvt_tls_check_hostname: "
+ "TLS unable to get peer certificate.\n" , 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get peer certificate.\n",
+ 0, 0, 0 );
+#endif
+ /* If this was a fatal condition, things would have
+ * aborted long before now.
+ */
+ return LDAP_SUCCESS;
+ }
+
+ 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, len2 = 0;
+ char *domain;
+ GENERAL_NAME *gn;
+
+ len1 = strlen(name);
+ n = sk_GENERAL_NAME_num(alt);
+ domain = strchr(name, '.');
+ if (domain) {
+ len2 = len1 - (domain-name);
+ }
+ for (i=0; i<n; i++) {
+ gn = sk_GENERAL_NAME_value(alt, i);
+ if (gn->type == GEN_DNS) {
+ char *sn = ASN1_STRING_data(gn->d.ia5);
+ int sl = ASN1_STRING_length(gn->d.ia5);
+
+ /* Is this an exact match? */
+ if ((len1 == sl) && !strncasecmp(name, sn, len1)) {
+ break;
+ }
+
+ /* Is this a wildcard match? */
+ if ((*sn == '*') && domain && (len2 == sl-1) &&
+ !strncasecmp(domain, sn+1, len2))
+ {
+ break;
+ }
+
+#if 0
+ /* Is this a RFC 2549 style wildcard match? */
+ if ((*sn == '.') && domain && (len2 == sl) &&
+ !strncasecmp(domain, sn, len2))
+ {
+ break;
+ }
+#endif
+ }
+ }
+
+ GENERAL_NAMES_free(alt);
+ if (i < n) { /* Found a match */
+ ret = LDAP_SUCCESS;
+ }
+ }
+ }
+
+ if (ret != LDAP_SUCCESS) {
+ X509_NAME *xn;
+ char buf[2048];
+
+ xn = X509_get_subject_name(x);
+
+ if( X509_NAME_get_text_by_NID( xn, NID_commonName,
+ buf, sizeof(buf)) == -1)
+ {
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, ERR, "ldap_pvt_tls_check_hostname: "
+ "TLS unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "TLS: unable to get common name from peer certificate.\n",
+ 0, 0, 0 );
+#endif
+ ld->ld_error = LDAP_STRDUP("TLS: unable to get CN from peer certificate");
+
+ } else if (strcasecmp(name, buf)) {
+#ifdef NEW_LOGGING
+ LDAP_LOG ( TRANSPORT, ERR, "ldap_pvt_tls_check_hostname: "
+ "TLS hostname (%s) does not match "
+ "common name in certificate (%s).\n", name, buf, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY, "TLS: hostname (%s) does not match "
+ "common name in certificate (%s).\n",
+ name, buf, 0 );
+#endif
+ ret = LDAP_CONNECT_ERROR;
+ ld->ld_error = LDAP_STRDUP("TLS: hostname does not match CN in peer certificate");
+
+ } else {
+ ret = LDAP_SUCCESS;
+ }
+ }
+ X509_free(x);
+ return ret;