--- /dev/null
+/*
+ * Copyright (C) 2005 Martin Koegler
+ * Copyright (C) 2010 TigerVNC Team
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifndef HAVE_GNUTLS
+#error "This source should not be compiled without HAVE_GNUTLS defined"
+#endif
+
+#include <rfb/CSecurityX509.h>
+#include <rfb/CConnection.h>
+#include <rfb/Exception.h>
+#include <rfb/LogWriter.h>
+
+#include <gnutls/x509.h>
+
+using namespace rfb;
+
+StringParameter CSecurityX509::x509ca("x509ca", "X509 CA certificate", "", ConfViewer);
+StringParameter CSecurityX509::x509crl("x509crl", "X509 CRL file", "", ConfViewer);
+
+static LogWriter vlog("CSecurityX509");
+
+CSecurityX509::CSecurityX509() : cert_cred(0)
+{
+ cafile = x509ca.getData();
+ crlfile = x509crl.getData();
+}
+
+CSecurityX509::~CSecurityX509()
+{
+ shutdown();
+ if (cert_cred)
+ gnutls_certificate_free_credentials(cert_cred);
+ delete[] cafile;
+ delete[] crlfile;
+}
+
+
+void CSecurityX509::freeResources()
+{
+ if (cert_cred)
+ gnutls_certificate_free_credentials(cert_cred);
+ cert_cred = 0;
+ }
+
+void CSecurityX509::setParam(gnutls_session session)
+{
+ int kx_priority[] = { GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA, GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0 };
+ gnutls_kx_set_priority(session, kx_priority);
+
+ gnutls_certificate_allocate_credentials(&cert_cred);
+
+ if (*cafile && gnutls_certificate_set_x509_trust_file(cert_cred,cafile,GNUTLS_X509_FMT_PEM) < 0)
+ throw AuthFailureException("load of CA cert failed");
+
+ if (*crlfile && gnutls_certificate_set_x509_crl_file(cert_cred,crlfile,GNUTLS_X509_FMT_PEM) < 0)
+ throw AuthFailureException("load of CRL failed");
+
+ gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, cert_cred);
+}
+
+void CSecurityX509::checkSession(gnutls_session session)
+{
+ int status;
+ const gnutls_datum *cert_list;
+ unsigned int cert_list_size = 0;
+ unsigned int i;
+
+ if (gnutls_certificate_type_get(session) != GNUTLS_CRT_X509)
+ throw AuthFailureException("unsupported certificate type");
+
+ cert_list = gnutls_certificate_get_peers(session, &cert_list_size);
+ if (!cert_list_size)
+ throw AuthFailureException("unsupported certificate type");
+
+ status = gnutls_certificate_verify_peers(session);
+ if (status == GNUTLS_E_NO_CERTIFICATE_FOUND)
+ throw AuthFailureException("no certificate sent");
+
+ if (status < 0) {
+ vlog.error("X509 verify failed: %s\n", gnutls_strerror (status));
+ throw AuthFailureException("certificate verification failed");
+ }
+
+ if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
+ throw AuthFailureException("certificate issuer unknown");
+
+ if (status & GNUTLS_CERT_INVALID)
+ throw AuthFailureException("certificate not trusted");
+
+ for (i = 0; i < cert_list_size; i++) {
+ gnutls_x509_crt crt;
+ gnutls_x509_crt_init(&crt);
+
+ if (gnutls_x509_crt_import(crt, &cert_list[i],GNUTLS_X509_FMT_DER) < 0)
+ throw AuthFailureException("Decoding of certificate failed");
+
+ if (gnutls_x509_crt_check_hostname(crt, client->getServerName()) == 0) {
+#if 0
+ /* FIXME: This must be changed to OK/Cancel checkbox */
+ throw AuthFailureException("Hostname mismatch"); /* Non-fatal for now... */
+#endif
+ }
+ gnutls_x509_crt_deinit(crt);
+ }
+}
+
--- /dev/null
+/* \r
+ * Copyright (C) 2005 Martin Koegler\r
+ * Copyright (C) 2010 TigerVNC Team\r
+ * \r
+ * This is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ * \r
+ * This software is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ * \r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this software; if not, write to the Free Software\r
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,\r
+ * USA.\r
+ */\r
+\r
+#ifndef __C_SECURITY_X509_H__\r
+#define __C_SECURITY_X509_H__\r
+\r
+#ifdef HAVE_CONFIG_H\r
+#include <config.h>\r
+#endif\r
+\r
+#ifndef HAVE_GNUTLS\r
+#error "This header should not be included without HAVE_GNUTLS defined"\r
+#endif\r
+\r
+#include <rfb/CSecurityTLSBase.h>\r
+#include <rfb/SSecurityVeNCrypt.h> /* To get secTypeX509None defined */\r
+\r
+namespace rfb {\r
+\r
+ class CSecurityX509 : public CSecurityTLSBase {\r
+ public:\r
+ CSecurityX509();\r
+ virtual ~CSecurityX509();\r
+ virtual int getType() const { return secTypeX509None; };\r
+ virtual const char* description() const { return "X509 Encryption without VncAuth"; }\r
+\r
+ static StringParameter x509ca;\r
+ static StringParameter x509crl;\r
+\r
+ protected:\r
+ virtual void freeResources();\r
+ virtual void setParam(gnutls_session session);\r
+ virtual void checkSession(gnutls_session session);\r
+\r
+ private:\r
+ gnutls_certificate_credentials cert_cred;\r
+ char *cafile;\r
+ char *crlfile;\r
+ };\r
+}\r
+\r
+#endif /* __C_SECURITY_TLS_H__ */\r
projects / tigervnc.git / commitdiff