Merge commit '86cc97e55fe346502462284d2e636a2b3708163e' as 'Sources/OpenVPN3'

2026-04-24 00:00:05 +08:00 · 2020-02-24 14:43:11 +03:00
parent 133b3756e6 86cc97e55f
commit 32f1555929
655 changed files with 146468 additions and 0 deletions
@@ -0,0 +1,109 @@
+//    OpenVPN -- An application to securely tunnel IP networks
+//               over a single port, with support for SSL/TLS-based
+//               session authentication and key exchange,
+//               packet encryption, packet authentication, and
+//               packet compression.
+//
+//    Copyright (C) 2012-2017 OpenVPN Inc.
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Affero General Public License Version 3
+//    as published by the Free Software Foundation.
+//
+//    This program 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 Affero General Public License for more details.
+//
+//    You should have received a copy of the GNU Affero General Public License
+//    along with this program in the COPYING file.
+//    If not, see <http://www.gnu.org/licenses/>.
+
+// Sanitize certain kinds of strings before they are output to the log file.
+
+#ifndef OPENVPN_OPTIONS_SANITIZE_H
+#define OPENVPN_OPTIONS_SANITIZE_H
+
+#include <string>
+#include <cstring>
+
+#include <openvpn/common/exception.hpp>
+#include <openvpn/common/options.hpp>
+
+namespace openvpn {
+
+  inline std::string render_options_sanitized(const OptionList& opt, const unsigned int render_flags)
+  {
+    std::ostringstream out;
+    for (size_t i = 0; i < opt.size(); i++)
+      {
+	const Option& o = opt[i];
+#ifndef OPENVPN_SHOW_SESSION_TOKEN
+	if (o.get_optional(0, 0) == "auth-token")
+	  out << i << " [auth-token] ..." << std::endl;
+	else
+#endif
+	  out << i << ' ' << o.render(render_flags) << std::endl;
+      }
+    return out.str();
+  }
+
+  // Remove security-sensitive strings from control message
+  // so that they will not be output to log file.
+  inline std::string sanitize_control_message(const std::string& src_str)
+  {
+#ifdef OPENVPN_SHOW_SESSION_TOKEN
+    return src_str;
+#else
+    const char *src = src_str.c_str();
+    char *ret = new char[src_str.length()+1];
+    char *dest = ret;
+    bool redact = false;
+    int skip = 0;
+
+    for (;;)
+      {
+	const char c = *src;
+	if (c == '\0')
+	  break;
+	if (c == 'S' && !::strncmp(src, "SESS_ID_", 8))
+	  {
+	    skip = 7;
+	    redact = true;
+	  }
+	else if (c == 'e' && !::strncmp(src, "echo ", 5))
+	  {
+	    skip = 4;
+	    redact = true;
+	  }
+
+	if (c == ',') /* end of redacted item? */
+	  {
+	    skip = 0;
+	    redact = false;
+	  }
+
+	if (redact)
+	  {
+	    if (skip > 0)
+	      {
+		--skip;
+		*dest++ = c;
+	      }
+	  }
+	else
+	  *dest++ = c;
+
+	++src;
+      }
+    *dest = '\0';
+
+    const std::string ret_str(ret);
+    delete [] ret;
+    return ret_str;
+#endif
+  }
+
+}
+
+#endif