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/>.
+
+// Environmental variables
+
+#ifndef OPENVPN_COMMON_ENVIRON_H
+#define OPENVPN_COMMON_ENVIRON_H
+
+#include <string>
+#include <cstring>
+#include <vector>
+#include <utility>
+
+#include <openvpn/common/size.hpp>
+
+extern char **environ;
+
+namespace openvpn {
+
+  class Environ : public std::vector<std::string>
+  {
+  public:
+    static std::string find_static(const std::string& name)
+    {
+      for (char **e = ::environ; *e != NULL; ++e)
+	{
+	  const char *eq = ::strchr(*e, '=');
+	  if (eq && eq > *e)
+	    {
+	      const size_t namelen = eq - *e;
+	      if (name.length() == namelen && ::strncmp(name.c_str(), *e, namelen) == 0)
+		return std::string(eq+1);
+	    }
+	}
+      return "";
+    }
+
+    void load_from_environ()
+    {
+      reserve(64);
+      for (char **e = ::environ; *e != NULL; ++e)
+	emplace_back(*e);
+    }
+
+    std::string to_string() const
+    {
+      std::string ret;
+      ret.reserve(512);
+      for (const auto &s : *this)
+	{
+	  ret += s;
+	  ret += '\n';
+	}
+      return ret;
+    }
+
+    int find_index(const std::string& name) const
+    {
+      for (int i = 0; i < size(); ++i)
+	{
+	  const std::string& s = (*this)[i];
+	  const size_t pos = s.find_first_of('=');
+	  if (pos != std::string::npos)
+	    {
+	      if (name == s.substr(0, pos))
+		return i;
+	    }
+	  else
+	    {
+	      if (name == s)
+		return i;
+	    }
+	}
+      return -1;
+    }
+
+    std::string find(const std::string& name) const
+    {
+      const int i = find_index(name);
+      if (i >= 0)
+	return value(i);
+      else
+	return "";
+    }
+
+    std::string value(const size_t idx) const
+    {
+      const std::string& s = (*this)[idx];
+      const size_t pos = s.find_first_of('=');
+      if (pos != std::string::npos)
+	return s.substr(pos+1);
+      else
+	return "";
+    }
+
+    void assign(const std::string& name, const std::string& value)
+    {
+      std::string nv = name + '=' + value;
+      const int i = find_index(name);
+      if (i >= 0)
+	(*this)[i] = std::move(nv);
+      else
+	push_back(std::move(nv));
+    }
+  };
+
+}
+#endif