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 +1,77 @@
+//    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) 2017-2018 OpenVPN Technologies, Inc.
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU 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 General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with this program in the COPYING file.
+//    If not, see <http://www.gnu.org/licenses/>.
+
+// Wrap the mbedTLS PEM API defined in <mbedtls/pem.h> so
+// that it can be used as part of the crypto layer of the OpenVPN core.
+
+#ifndef OPENVPN_MBEDTLS_UTIL_PEM_H
+#define OPENVPN_MBEDTLS_UTIL_PEM_H
+
+#include <mbedtls/pem.h>
+
+namespace openvpn {
+    class MbedTLSPEM
+    {
+    public:
+      static bool pem_encode(BufferAllocated& dst, const unsigned char *src,
+			     size_t src_len, const std::string& key_name)
+      {
+	std::string header = "-----BEGIN " + key_name + "-----\n";
+	std::string footer = "-----END " + key_name + "-----\n";
+	size_t out_len = 0;
+
+	int ret = mbedtls_pem_write_buffer(header.c_str(), footer.c_str(),
+					   src, src_len, dst.data(),
+					   dst.max_size(), &out_len);
+	if (ret == 0)
+	  dst.set_size(out_len);
+	else
+	{
+	  char buf[128];
+	  mbedtls_strerror(ret, buf, 128);
+	  OPENVPN_LOG("mbedtls_pem_write_buffer error: " <<  buf);
+	}
+
+	return (ret == 0);
+      }
+
+      static bool pem_decode(BufferAllocated& dst, const char *src,
+			     size_t src_len, const std::string& key_name)
+      {
+	std::string header = "-----BEGIN " + key_name + "-----";
+	std::string footer = "-----END " + key_name + "-----";
+	mbedtls_pem_context ctx = { };
+	size_t out_len = 0;
+
+	int ret = mbedtls_pem_read_buffer(&ctx, header.c_str(), footer.c_str(),
+					  (unsigned char *)src, nullptr, 0,
+					  &out_len);
+	if (ret == 0)
+	  dst.init(ctx.buf, ctx.buflen, BufferAllocated::DESTRUCT_ZERO);
+
+	mbedtls_pem_free(&ctx);
+
+	return (ret == 0);
+      }
+    };
+};
+
+#endif /* OPENVPN_MBEDTLS_UTIL_PEM_H */