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_SOCKOPT_H
+#define OPENVPN_COMMON_SOCKOPT_H
+
+#include <openvpn/common/platform.hpp>
+
+#if !defined(OPENVPN_PLATFORM_WIN)
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+#include <openvpn/common/exception.hpp>
+
+namespace openvpn {
+  namespace SockOpt {
+
+#ifdef SO_REUSEPORT
+    // set SO_REUSEPORT for inter-thread load balancing
+    inline void reuseport(const int fd)
+    {
+      int on = 1;
+      if (::setsockopt(fd, SOL_SOCKET, SO_REUSEPORT,
+		     (void *)&on, sizeof(on)) < 0)
+	throw Exception("error setting SO_REUSEPORT on socket");
+    }
+#endif
+
+    // set SO_REUSEADDR for TCP
+    inline void reuseaddr(const int fd)
+    {
+      int on = 1;
+      if (::setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
+		     (void *)&on, sizeof(on)) < 0)
+	throw Exception("error setting SO_REUSEADDR on socket");
+    }
+
+    // set TCP_NODELAY for TCP
+    inline void tcp_nodelay(const int fd)
+    {
+      int state = 1;
+      if (::setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
+		     (void *)&state, sizeof(state)) != 0)
+	throw Exception("error setting TCP_NODELAY on socket");
+    }
+
+    // set FD_CLOEXEC to prevent fd from being passed across execs
+    inline void set_cloexec(const int fd)
+    {
+      if (::fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
+	throw Exception("error setting FD_CLOEXEC on file-descriptor/socket");
+    }
+
+    // set non-block mode on socket
+    static inline void set_nonblock(const int fd)
+    {
+      if (::fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
+	throw Exception("error setting socket to non-blocking mode");
+    }
+  }
+}
+
+#endif
+#endif