NetPlay: add one click host

Add a context menu entry in main game list to host a netplay game
based on saved settings.

Original commit:
commit 91aaa958e6af0275c07b63443938a0be471e0669
Author: Aestek <thib.gilles@gmail.com>
Date:   Sun Jul 24 14:51:37 2016 +0200

1 files changed, 142 insertions, 0 deletions

diff --git a/Source/Core/DolphinWX/NetPlay/NetPlayLauncher.cpp b/Source/Core/DolphinWX/NetPlay/NetPlayLauncher.cpp
new file mode 100644
index 0000000000..8c1cab04df
--- /dev/null
+++ b/Source/Core/DolphinWX/NetPlay/NetPlayLauncher.cpp
@@ -0,0 +1,142 @@
+// Copyright 2016 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "NetPlayLauncher.h"
+#include "Common/CommonTypes.h"
+#include "Common/FileUtil.h"
+#include "Common/IniFile.h"
+#include "Common/StringUtil.h"
+#include "DolphinWX/WxUtils.h"
+#include "NetWindow.h"
+
+bool NetPlayLauncher::Host(const NetPlayHostConfig& config)
+{
+  NetPlayDialog*& npd = NetPlayDialog::GetInstance();
+  NetPlayServer*& netplay_server = NetPlayDialog::GetNetPlayServer();
+
+  if (npd)
+  {
+    WxUtils::ShowErrorDialog(_("A NetPlay window is already open!"));
+    return false;
+  }
+
+  netplay_server = new NetPlayServer(config.listen_port, config.use_traversal,
+                                     config.traversal_host, config.traversal_port);
+
+  if (!netplay_server->is_connected)
+  {
+    WxUtils::ShowErrorDialog(
+        _("Failed to listen. Is another instance of the NetPlay server running?"));
+    return false;
+  }
+
+  netplay_server->ChangeGame(config.game_name);
+
+#ifdef USE_UPNP
+  if (config.forward_port)
+  {
+    netplay_server->TryPortmapping(config.listen_port);
+  }
+#endif
+
+  npd = new NetPlayDialog(config.parent_window, config.game_list_ctrl, config.game_name, true);
+
+  NetPlayClient*& netplay_client = NetPlayDialog::GetNetPlayClient();
+  netplay_client =
+      new NetPlayClient("127.0.0.1", netplay_server->GetPort(), npd, config.player_name, false,
+                        config.traversal_host, config.traversal_port);
+
+  if (netplay_client->IsConnected())
+  {
+    npd->Show();
+    netplay_server->SetNetPlayUI(NetPlayDialog::GetInstance());
+    return true;
+  }
+  else
+  {
+    npd->Destroy();
+    return false;
+  }
+}
+
+bool NetPlayLauncher::Join(const NetPlayJoinConfig& config)
+{
+  NetPlayDialog*& npd = NetPlayDialog::GetInstance();
+  NetPlayClient*& netplay_client = NetPlayDialog::GetNetPlayClient();
+
+  npd = new NetPlayDialog(config.parent_window, config.game_list_ctrl, "", false);
+
+  std::string host;
+  if (config.use_traversal)
+    host = config.connect_hash_code;
+  else
+    host = config.connect_host;
+
+  netplay_client =
+      new NetPlayClient(host, config.connect_port, npd, config.player_name, config.use_traversal,
+                        config.traversal_host, config.traversal_port);
+  if (netplay_client->IsConnected())
+  {
+    npd->Show();
+    return true;
+  }
+  else
+  {
+    npd->Destroy();
+    return false;
+  }
+}
+
+const std::string NetPlayLaunchConfig::DEFAULT_TRAVERSAL_HOST = "stun.dolphin-emu.org";
+const u16 NetPlayLaunchConfig::DEFAULT_TRAVERSAL_PORT = 6262;
+const u16 NetPlayHostConfig::DEFAULT_LISTEN_PORT = 2626;
+
+std::string NetPlayLaunchConfig::GetTraversalHostFromIniConfig(IniFile::Section& netplay_section)
+{
+  std::string host;
+
+  netplay_section.Get("TraversalServer", &host, DEFAULT_TRAVERSAL_HOST);
+  host = StripSpaces(host);
+
+  if (host.empty())
+    return DEFAULT_TRAVERSAL_HOST;
+
+  return host;
+}
+
+u16 NetPlayLaunchConfig::GetTraversalPortFromIniConfig(IniFile::Section& netplay_section)
+{
+  std::string port_str;
+  unsigned long port;
+
+  netplay_section.Get("TraversalPort", &port_str, std::to_string(DEFAULT_TRAVERSAL_PORT));
+  StrToWxStr(port_str).ToULong(&port);
+
+  if (port == 0)
+    port = DEFAULT_TRAVERSAL_PORT;
+
+  return static_cast<u16>(port);
+}
+
+void NetPlayHostConfig::FromIniConfig(IniFile::Section& netplay_section)
+{
+  std::string traversal_choice_setting;
+  netplay_section.Get("TraversalChoice", &traversal_choice_setting, "direct");
+  use_traversal = traversal_choice_setting == "traversal";
+
+  if (!use_traversal)
+  {
+    unsigned long lport = 0;
+    std::string port_setting;
+    netplay_section.Get("HostPort", &port_setting, std::to_string(DEFAULT_LISTEN_PORT));
+    StrToWxStr(port_setting).ToULong(&lport);
+
+    listen_port = static_cast<u16>(lport);
+  }
+  else
+  {
+    traversal_port = GetTraversalPortFromIniConfig(netplay_section);
+    traversal_host = GetTraversalHostFromIniConfig(netplay_section);
+  }
+}
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