From ad712926d6f6417ea86e65b542cd2197ecd774ba Mon Sep 17 00:00:00 2001
From: SoRadGaming <sohorhab.azizdel@outlook.com>
Date: Wed, 18 Jan 2023 01:43:39 +1100
Subject: LDN Hostname Support in Direct Connect

- Added IPv6 & Namespace support in direct connection Regex
- Updated Tooltip for Direct Connect UI
- Removed Dropdown Connection Type in Direct Connect
---
 src/yuzu/multiplayer/direct_connect.cpp | 21 +++++++--------------
 src/yuzu/multiplayer/direct_connect.ui  | 23 ++++++++++-------------
 src/yuzu/multiplayer/validation.h       | 25 +++++++++++++++++++++----
 3 files changed, 38 insertions(+), 31 deletions(-)

diff --git a/src/yuzu/multiplayer/direct_connect.cpp b/src/yuzu/multiplayer/direct_connect.cpp
index cbd52da85..d71cc23a7 100644
--- a/src/yuzu/multiplayer/direct_connect.cpp
+++ b/src/yuzu/multiplayer/direct_connect.cpp
@@ -81,20 +81,13 @@ void DirectConnectWindow::Connect() {
             }
         }
     }
-    switch (static_cast<ConnectionType>(ui->connection_type->currentIndex())) {
-    case ConnectionType::TraversalServer:
-        break;
-    case ConnectionType::IP:
-        if (!ui->ip->hasAcceptableInput()) {
-            NetworkMessage::ErrorManager::ShowError(
-                NetworkMessage::ErrorManager::IP_ADDRESS_NOT_VALID);
-            return;
-        }
-        if (!ui->port->hasAcceptableInput()) {
-            NetworkMessage::ErrorManager::ShowError(NetworkMessage::ErrorManager::PORT_NOT_VALID);
-            return;
-        }
-        break;
+    if (!ui->ip->hasAcceptableInput()) {
+        NetworkMessage::ErrorManager::ShowError(NetworkMessage::ErrorManager::IP_ADDRESS_NOT_VALID);
+        return;
+    }
+    if (!ui->port->hasAcceptableInput()) {
+        NetworkMessage::ErrorManager::ShowError(NetworkMessage::ErrorManager::PORT_NOT_VALID);
+        return;
     }
 
     // Store settings
diff --git a/src/yuzu/multiplayer/direct_connect.ui b/src/yuzu/multiplayer/direct_connect.ui
index 57d6ec25a..0dd4e6829 100644
--- a/src/yuzu/multiplayer/direct_connect.ui
+++ b/src/yuzu/multiplayer/direct_connect.ui
@@ -26,20 +26,11 @@
          <property name="leftMargin">
           <number>0</number>
          </property>
-         <item>
-          <widget class="QComboBox" name="connection_type">
-           <item>
-            <property name="text">
-             <string>IP Address</string>
-            </property>
-           </item>
-          </widget>
-         </item>
          <item>
           <widget class="QWidget" name="ip_container" native="true">
            <layout class="QHBoxLayout" name="ip_layout">
             <property name="leftMargin">
-             <number>5</number>
+             <number>0</number>
             </property>
             <property name="topMargin">
              <number>0</number>
@@ -53,17 +44,17 @@
             <item>
              <widget class="QLabel" name="label_2">
               <property name="text">
-               <string>IP</string>
+               <string>Server Address</string>
               </property>
              </widget>
             </item>
             <item>
              <widget class="QLineEdit" name="ip">
               <property name="toolTip">
-               <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;IPv4 address of the host&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+               <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Server address of the host&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
               </property>
               <property name="maxLength">
-               <number>16</number>
+               <number>253</number>
               </property>
              </widget>
             </item>
@@ -85,6 +76,12 @@
               <property name="placeholderText">
                <string notr="true" extracomment="placeholder string that tells user default port">24872</string>
               </property>
+              <property name="maximumSize">
+               <size>
+                <width>65</width>
+                <height>50</height>
+               </size>
+              </property>
              </widget>
             </item>
            </layout>
diff --git a/src/yuzu/multiplayer/validation.h b/src/yuzu/multiplayer/validation.h
index dd25af280..cbbe6757b 100644
--- a/src/yuzu/multiplayer/validation.h
+++ b/src/yuzu/multiplayer/validation.h
@@ -38,11 +38,28 @@ private:
         QRegularExpression(QStringLiteral("^[a-zA-Z0-9._ -]{4,20}"));
     QRegularExpressionValidator nickname;
 
-    /// ipv4 address only
-    // TODO remove this when we support hostnames in direct connect
+    /// ipv4 / ipv6 / hostnames
     QRegularExpression ip_regex = QRegularExpression(QStringLiteral(
-        "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|"
-        "2[0-4][0-9]|25[0-5])"));
+        // IPv4 regex
+        "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$|"
+        // IPv6 regex
+        "^((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|"
+        "(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-"
+        "5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|"
+        "(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)"
+        "(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|"
+        "(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]"
+        "\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|"
+        "(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2["
+        "0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|"
+        "(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2["
+        "0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|"
+        "(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2["
+        "0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|"
+        "(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?"
+        "\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:)))(%.+)?$|"
+        // Hostname regex
+        "^([a-zA-Z0-9]+(-[a-zA-Z0-9]+)*\\.)+[a-zA-Z]{2,}$"));
     QRegularExpressionValidator ip;
 
     /// port must be between 0 and 65535
-- 
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