Refactoring HOS folder structure (#771)

* Refactoring HOS folder structure

Refactoring HOS folder structure:

- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close #766 and #753).

* Remove Types namespaces

1 files changed, 131 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Sockets/Nsd/Manager/FqdnResolver.cs b/Ryujinx.HLE/HOS/Services/Sockets/Nsd/Manager/FqdnResolver.cs
new file mode 100644
index 00000000..aaab7b3b
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Sockets/Nsd/Manager/FqdnResolver.cs
@@ -0,0 +1,131 @@
+using System.Text;
+
+namespace Ryujinx.HLE.HOS.Services.Sockets.Nsd.Manager
+{
+    class FqdnResolver
+    {
+        private const string _dummyAddress = "unknown.dummy.nintendo.net";
+
+        private NsdSettings _nsdSettings;
+
+        public FqdnResolver(NsdSettings nsdSettings)
+        {
+            _nsdSettings = nsdSettings;
+        }
+
+        public ResultCode GetSettingName(ServiceCtx context, out string settingName)
+        {
+            if (_nsdSettings.TestMode)
+            {
+                settingName = "";
+
+                return ResultCode.NotImplemented;
+            }
+            else
+            {
+                settingName = "";
+
+                if (true) // TODO: Determine field (struct + 0x2C)
+                {
+                    settingName = _nsdSettings.Environment;
+
+                    return ResultCode.Success;
+                }
+
+                return ResultCode.NullOutputObject;
+            }
+        }
+
+        public ResultCode GetEnvironmentIdentifier(ServiceCtx context, out string identifier)
+        {
+            if (_nsdSettings.TestMode)
+            {
+                identifier = "rre";
+
+                return ResultCode.NotImplemented;
+            }
+            else
+            {
+                identifier = _nsdSettings.Environment;
+            }
+
+            return ResultCode.Success;
+        }
+
+        public ResultCode Resolve(ServiceCtx context, string address, out string resolvedAddress)
+        {
+            if (address != "api.sect.srv.nintendo.net" || address != "conntest.nintendowifi.net")
+            {
+                // TODO: Load Environment from the savedata.
+                address = address.Replace("%", _nsdSettings.Environment);
+
+                resolvedAddress = "";
+
+                if (_nsdSettings == null)
+                {
+                    return ResultCode.SettingsNotInitialized;
+                }
+
+                if (!_nsdSettings.Initialized)
+                {
+                    return ResultCode.SettingsNotLoaded;
+                }
+
+                switch (address)
+                {
+                    case "e97b8a9d672e4ce4845ec6947cd66ef6-sb-api.accounts.nintendo.com": // dp1 environment
+                        resolvedAddress = "e97b8a9d672e4ce4845ec6947cd66ef6-sb.baas.nintendo.com";
+                        break;
+                    case "api.accounts.nintendo.com": // dp1 environment
+                        resolvedAddress = "e0d67c509fb203858ebcb2fe3f88c2aa.baas.nintendo.com";
+                        break;
+                    case "e97b8a9d672e4ce4845ec6947cd66ef6-sb.accounts.nintendo.com": // lp1 environment
+                        resolvedAddress = "e97b8a9d672e4ce4845ec6947cd66ef6-sb.baas.nintendo.com";
+                        break;
+                    case "accounts.nintendo.com": // lp1 environment
+                        resolvedAddress = "e0d67c509fb203858ebcb2fe3f88c2aa.baas.nintendo.com";
+                        break;
+                    /*
+                    // TODO: Determine fields of the struct.
+                    case "": // + 0xEB8 || + 0x2BE8
+                        resolvedAddress = ""; // + 0xEB8 + 0x300 || + 0x2BE8 + 0x300
+                        break;
+                    */
+                    default:
+                        resolvedAddress = address;
+                        break;
+                }
+            }
+            else
+            {
+                resolvedAddress = address;
+            }
+
+            return ResultCode.Success;
+        }
+
+        public ResultCode ResolveEx(ServiceCtx context, out ResultCode resultCode, out string resolvedAddress)
+        {
+            (long inputPosition, long inputSize)  = context.Request.GetBufferType0x21();
+
+            byte[] addressBuffer = context.Memory.ReadBytes(inputPosition, inputSize);
+            string address       = Encoding.UTF8.GetString(addressBuffer);
+
+            resultCode = Resolve(context, address, out resolvedAddress);
+
+            if (resultCode != ResultCode.Success)
+            {
+                resolvedAddress = _dummyAddress;
+            }
+
+            if (_nsdSettings.TestMode)
+            {
+                return ResultCode.Success;
+            }
+            else
+            {
+                return resultCode;
+            }
+        }
+    }
+}
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