wallet2_api: implement runtime proxy configuration

5 files changed, 161 insertions, 2 deletions

diff --git a/src/net/CMakeLists.txt b/src/net/CMakeLists.txt
index 1ce7118ad..afcd42ef7 100644
--- a/src/net/CMakeLists.txt
+++ b/src/net/CMakeLists.txt
@@ -26,9 +26,9 @@
 # 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.
 
-set(net_sources dandelionpp.cpp error.cpp i2p_address.cpp parse.cpp socks.cpp
+set(net_sources dandelionpp.cpp error.cpp http.cpp i2p_address.cpp parse.cpp socks.cpp
     socks_connect.cpp tor_address.cpp zmq.cpp)
-set(net_headers dandelionpp.h error.h i2p_address.h parse.h socks.h socks_connect.h
+set(net_headers dandelionpp.h error.h http.cpp i2p_address.h parse.h socks.h socks_connect.h
     tor_address.h zmq.h)
 
 monero_add_library(net ${net_sources} ${net_headers})
diff --git a/src/net/http.cpp b/src/net/http.cpp
new file mode 100644
index 000000000..f54b65c29
--- /dev/null
+++ b/src/net/http.cpp
@@ -0,0 +1,70 @@
+// Copyright (c) 2020, 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.
+
+#include "http.h"
+
+#include "parse.h"
+#include "socks_connect.h"
+
+namespace net
+{
+namespace http
+{
+
+bool client::set_proxy(const std::string &address)
+{
+  if (address.empty())
+  {
+    set_connector(epee::net_utils::direct_connect{});
+  }
+  else
+  {
+    const auto endpoint = get_tcp_endpoint(address);
+    if (!endpoint)
+    {
+      auto always_fail = net::socks::connector{boost::asio::ip::tcp::endpoint()};
+      set_connector(always_fail);
+    }
+    else
+    {
+      set_connector(net::socks::connector{*endpoint});
+    }
+  }
+
+  disconnect();
+
+  return true;
+}
+
+std::unique_ptr<epee::net_utils::http::abstract_http_client> client_factory::create()
+{
+  return std::unique_ptr<epee::net_utils::http::abstract_http_client>(new client());
+}
+
+} // namespace http
+} // namespace net
diff --git a/src/net/http.h b/src/net/http.h
new file mode 100644
index 000000000..91a345851
--- /dev/null
+++ b/src/net/http.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2020, 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 "net/http_client.h"
+
+namespace net
+{
+namespace http
+{
+
+class client : public epee::net_utils::http::http_simple_client
+{
+public:
+  bool set_proxy(const std::string &address) override;
+};
+
+class client_factory : public epee::net_utils::http::http_client_factory
+{
+public:
+  std::unique_ptr<epee::net_utils::http::abstract_http_client> create() override;
+};
+
+} // namespace http
+} // namespace net
diff --git a/src/net/parse.cpp b/src/net/parse.cpp
index ce580afe7..95b22cd44 100644
--- a/src/net/parse.cpp
+++ b/src/net/parse.cpp
@@ -122,4 +122,39 @@ namespace net
 
         return {epee::net_utils::ipv4_network_subnet{ip, (uint8_t)mask}};
     }
+
+    expect<boost::asio::ip::tcp::endpoint> get_tcp_endpoint(const boost::string_ref address)
+    {
+        uint16_t port = 0;
+        expect<epee::net_utils::network_address> parsed = get_network_address(address, port);
+        if (!parsed)
+        {
+            return parsed.error();
+        }
+
+        boost::asio::ip::tcp::endpoint result;
+        switch (parsed->get_type_id())
+        {
+            case epee::net_utils::ipv4_network_address::get_type_id():
+            {
+                const auto &ipv4 = parsed->as<epee::net_utils::ipv4_network_address>();
+                result = boost::asio::ip::tcp::endpoint(boost::asio::ip::address_v4(ipv4.ip()), ipv4.port());
+                break;
+            }
+            case epee::net_utils::ipv6_network_address::get_type_id():
+            {
+                const auto &ipv6 = parsed->as<epee::net_utils::ipv6_network_address>();
+                result = boost::asio::ip::tcp::endpoint(ipv6.ip(), ipv6.port());
+                break;
+            }
+            default:
+                return make_error_code(net::error::unsupported_address);
+        }
+        if (result.port() == 0)
+        {
+            return make_error_code(net::error::invalid_port);
+        }
+
+        return result;
+    }
 }
diff --git a/src/net/parse.h b/src/net/parse.h
index 0d8fda711..4d5efe161 100644
--- a/src/net/parse.h
+++ b/src/net/parse.h
@@ -28,6 +28,7 @@
 
 #pragma once
 
+#include <boost/asio/ip/tcp.hpp>
 #include <boost/utility/string_ref.hpp>
 #include <cstdint>
 
@@ -65,5 +66,7 @@ namespace net
     */
     expect<epee::net_utils::ipv4_network_subnet>
         get_ipv4_subnet_address(boost::string_ref address, bool allow_implicit_32 = false);
+
+    expect<boost::asio::ip::tcp::endpoint> get_tcp_endpoint(const boost::string_ref address);
 }