Adding initial support for broadcasting transactions over Tor

  - Support for ".onion" in --add-exclusive-node and --add-peer
  - Add --anonymizing-proxy for outbound Tor connections
  - Add --anonymous-inbounds for inbound Tor connections
  - Support for sharing ".onion" addresses over Tor connections
  - Support for broadcasting transactions received over RPC exclusively
    over Tor (else broadcast over public IP when Tor not enabled).

1 files changed, 64 insertions, 0 deletions

diff --git a/src/net/error.h b/src/net/error.h
new file mode 100644
index 000000000..c8338f7e2
--- /dev/null
+++ b/src/net/error.h
@@ -0,0 +1,64 @@
+// Copyright (c) 2018, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include <system_error>
+#include <type_traits>
+
+namespace net
+{
+    //! General net errors
+    enum class error : int
+    {
+        // 0 reserved for success (as per expect<T>)
+        expected_tld = 1,   //!< Expected a tld
+        invalid_host,       //!< Hostname is not valid
+        invalid_i2p_address,
+        invalid_port,       //!< Outside of 0-65535 range
+        invalid_tor_address,//!< Invalid base32 or length
+        unsupported_address //!< Type not supported by `get_network_address`
+    };
+
+    //! \return `std::error_category` for `net` namespace.
+    std::error_category const& error_category() noexcept;
+
+    //! \return `net::error` as a `std::error_code` value.
+    inline std::error_code make_error_code(error value) noexcept
+    {
+        return std::error_code{int(value), error_category()};
+    }
+}
+
+namespace std
+{
+    template<>
+    struct is_error_code_enum<::net::error>
+      : true_type
+    {};
+}