1 files changed, 156 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/tls/tls_version.h b/comm/third_party/botan/src/lib/tls/tls_version.h
new file mode 100644
index 0000000000..18e2c0f65c
--- /dev/null
+++ b/comm/third_party/botan/src/lib/tls/tls_version.h
@@ -0,0 +1,156 @@
+/*
+* TLS Protocol Version Management
+* (C) 2012 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_TLS_PROTOCOL_VERSION_H_
+#define BOTAN_TLS_PROTOCOL_VERSION_H_
+
+#include <botan/types.h>
+#include <string>
+
+namespace Botan {
+
+namespace TLS {
+
+/**
+* TLS Protocol Version
+*/
+class BOTAN_PUBLIC_API(2,0) Protocol_Version final
+   {
+   public:
+      enum Version_Code {
+         TLS_V10            = 0x0301,
+         TLS_V11            = 0x0302,
+         TLS_V12            = 0x0303,
+
+         DTLS_V10           = 0xFEFF,
+         DTLS_V12           = 0xFEFD
+      };
+
+      /**
+      * @return latest known TLS version
+      */
+      static Protocol_Version latest_tls_version()
+         {
+         return Protocol_Version(TLS_V12);
+         }
+
+      /**
+      * @return latest known DTLS version
+      */
+      static Protocol_Version latest_dtls_version()
+         {
+         return Protocol_Version(DTLS_V12);
+         }
+
+      Protocol_Version() : m_version(0) {}
+
+      explicit Protocol_Version(uint16_t code) : m_version(code) {}
+
+      /**
+      * @param named_version a specific named version of the protocol
+      */
+      Protocol_Version(Version_Code named_version) :
+         Protocol_Version(static_cast<uint16_t>(named_version)) {}
+
+      /**
+      * @param major the major version
+      * @param minor the minor version
+      */
+      Protocol_Version(uint8_t major, uint8_t minor) :
+         Protocol_Version(static_cast<uint16_t>((static_cast<uint16_t>(major) << 8) | minor)) {}
+
+      /**
+      * @return true if this is a valid protocol version
+      */
+      bool valid() const { return (m_version != 0); }
+
+      /**
+      * @return true if this is a protocol version we know about
+      */
+      bool known_version() const;
+
+      /**
+      * @return major version of the protocol version
+      */
+      uint8_t major_version() const { return static_cast<uint8_t>(m_version >> 8); }
+
+      /**
+      * @return minor version of the protocol version
+      */
+      uint8_t minor_version() const { return static_cast<uint8_t>(m_version & 0xFF); }
+
+      /**
+      * @return the version code
+      */
+      uint16_t version_code() const { return m_version; }
+
+      /**
+      * @return human-readable description of this version
+      */
+      std::string to_string() const;
+
+      /**
+      * @return true iff this is a DTLS version
+      */
+      bool is_datagram_protocol() const;
+
+      /**
+      * @return true if this version supports negotiable signature algorithms
+      */
+      bool supports_negotiable_signature_algorithms() const;
+
+      /**
+      * @return true if this version uses explicit IVs for block ciphers
+      */
+      bool supports_explicit_cbc_ivs() const;
+
+      /**
+      * @return true if this version uses a ciphersuite specific PRF
+      */
+      bool supports_ciphersuite_specific_prf() const;
+
+      bool supports_aead_modes() const;
+
+      /**
+      * @return if this version is equal to other
+      */
+      bool operator==(const Protocol_Version& other) const
+         {
+         return (m_version == other.m_version);
+         }
+
+      /**
+      * @return if this version is not equal to other
+      */
+      bool operator!=(const Protocol_Version& other) const
+         {
+         return (m_version != other.m_version);
+         }
+
+      /**
+      * @return if this version is later than other
+      */
+      bool operator>(const Protocol_Version& other) const;
+
+      /**
+      * @return if this version is later than or equal to other
+      */
+      bool operator>=(const Protocol_Version& other) const
+         {
+         return (*this == other || *this > other);
+         }
+
+   private:
+      uint16_t m_version;
+   };
+
+}
+
+}
+
+#endif
+