1 files changed, 151 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/tls/asio/asio_error.h b/comm/third_party/botan/src/lib/tls/asio/asio_error.h
new file mode 100644
index 0000000000..bdaf8473f9
--- /dev/null
+++ b/comm/third_party/botan/src/lib/tls/asio/asio_error.h
@@ -0,0 +1,151 @@
+/*
+* TLS Stream Errors
+* (C) 2018-2020 Jack Lloyd
+*     2018-2020 Hannes Rantzsch, Tim Oesterreich, Rene Meusel
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ASIO_ERROR_H_
+#define BOTAN_ASIO_ERROR_H_
+
+#include <botan/build.h>
+
+#include <boost/version.hpp>
+#if BOOST_VERSION >= 106600
+
+#include <boost/system/system_error.hpp>
+
+#include <botan/exceptn.h>
+#include <botan/tls_alert.h>
+#include <botan/tls_exceptn.h>
+
+/*
+ * This file defines Botan-specific subclasses of boost::system::error_category.
+ * In addition to the class definition, each category class is accompanied by function `make_error_code` used to create
+ * a `boost::system::error_code` of the category from some other kind of error in Botan (for example, a TLS alert).
+ * Since error_category instances should be singletons, there's also a method to get/create the instance for each class.
+ */
+
+namespace Botan {
+namespace TLS {
+
+enum StreamError
+   {
+   StreamTruncated = 1
+   };
+
+//! @brief An error category for errors from the TLS::Stream
+struct StreamCategory : public boost::system::error_category
+   {
+   public:
+      const char* name() const noexcept override
+         {
+         return "Botan TLS Stream";
+         }
+
+      std::string message(int value) const override
+         {
+         switch(value)
+            {
+            case StreamTruncated:
+               return "stream truncated";
+            default:
+               return "generic error";
+            }
+         }
+   };
+
+inline const StreamCategory& botan_stream_category()
+   {
+   static StreamCategory category;
+   return category;
+   }
+
+inline boost::system::error_code make_error_code(Botan::TLS::StreamError e)
+   {
+   return boost::system::error_code(static_cast<int>(e), Botan::TLS::botan_stream_category());
+   }
+
+//! @brief An error category for TLS alerts
+struct BotanAlertCategory : boost::system::error_category
+   {
+   const char* name() const noexcept override
+      {
+      return "Botan TLS Alert";
+      }
+
+   std::string message(int ev) const override
+      {
+      Botan::TLS::Alert alert(static_cast<Botan::TLS::Alert::Type>(ev));
+      return alert.type_string();
+      }
+   };
+
+inline const BotanAlertCategory& botan_alert_category() noexcept
+   {
+   static BotanAlertCategory category;
+   return category;
+   }
+
+inline boost::system::error_code make_error_code(Botan::TLS::Alert::Type c)
+   {
+   return boost::system::error_code(static_cast<int>(c), Botan::TLS::botan_alert_category());
+   }
+
+}  // namespace TLS
+
+//! @brief An error category for errors from Botan (other than TLS alerts)
+struct BotanErrorCategory : boost::system::error_category
+   {
+   const char* name() const noexcept override
+      {
+      return "Botan";
+      }
+
+   std::string message(int ev) const override
+      {
+      return Botan::to_string(static_cast<Botan::ErrorType>(ev));
+      }
+   };
+
+inline const BotanErrorCategory& botan_category() noexcept
+   {
+   static BotanErrorCategory category;
+   return category;
+   }
+
+inline boost::system::error_code make_error_code(Botan::ErrorType e)
+   {
+   return boost::system::error_code(static_cast<int>(e), Botan::botan_category());
+   }
+
+}  // namespace Botan
+
+ /*
+ * Add a template specialization of `is_error_code_enum` for each kind of error to allow automatic conversion to an
+ * error code.
+ */
+namespace boost {
+namespace system {
+
+template<> struct is_error_code_enum<Botan::TLS::Alert::Type>
+   {
+   static const bool value = true;
+   };
+
+template<> struct is_error_code_enum<Botan::TLS::StreamError>
+   {
+   static const bool value = true;
+   };
+
+template<> struct is_error_code_enum<Botan::ErrorType>
+   {
+   static const bool value = true;
+   };
+
+}  // namespace system
+}  // namespace boost
+
+#endif // BOOST_VERSION
+#endif // BOTAN_ASIO_ERROR_H_