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
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+//    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/>.
+
+#ifndef OPENVPN_COMMON_STAT_H
+#define OPENVPN_COMMON_STAT_H
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <cstdint>         // for std::uint64_t
+
+namespace openvpn {
+
+  // Return true if file exists
+  inline bool file_exists(const std::string& filename)
+  {
+    if (filename.empty())
+      return false;
+    struct stat buffer;   
+    return stat(filename.c_str(), &buffer) == 0; 
+  }
+
+  // Return file modification time (in seconds since unix epoch) or 0 on error
+  inline time_t file_mod_time(const std::string& filename)
+  {
+    struct stat buffer;
+    if (stat(filename.c_str(), &buffer) != 0)
+      return 0;
+    else
+      return buffer.st_mtime;
+  }
+
+  // Return file modification time (in nanoseconds since unix epoch) or 0 on error
+  inline std::uint64_t file_mod_time_nanoseconds(const std::string& filename)
+  {
+    typedef std::uint64_t T;
+    struct stat s;
+    if (::stat(filename.c_str(), &s) == 0)
+      return T(s.st_mtim.tv_sec) * T(1000000000) + T(s.st_mtim.tv_nsec);
+    else
+      return 0;
+  }
+
+  // Return file modification time (in milliseconds since unix epoch) or 0 on error
+  inline std::uint64_t file_mod_time_milliseconds(const std::string& filename)
+  {
+    return file_mod_time_nanoseconds(filename) / std::uint64_t(1000000);
+  }
+
+}
+
+#endif