feat: Unapproved mods download

Northstar.Client/mod/scripts/vscripts/cl_northstar_client_init.nut

@@ -47,6 +47,7 @@ global struct RequiredModInfo
 {
 	string name
 	string version
+	string downloadLink
 }
 
 global struct ServerInfo

Northstar.Client/mod/scripts/vscripts/ui/menu_ns_moddownload.nut

@@ -1,6 +1,7 @@
 global function DownloadMod
 global function DisplayModDownloadErrorDialog
 global function FetchVerifiedModsManifesto
+global function IsModDownloadable
 
 global enum eModInstallStatus
 {
@@ -19,6 +20,11 @@ global enum eModInstallStatus
 	NOT_FOUND
 }
 
+struct
+{
+	bool abortDownload = false
+} file
+
 const int MB = 1024 * 1000
 
 void function FetchVerifiedModsManifesto()
@@ -49,8 +55,61 @@ void function FetchVerifiedModsManifesto()
 	CloseActiveMenu()
 }
 
+void function ApproveDownload()
+{
+	file.abortDownload = false
+}
+
+void function AbortDownload()
+{
+	file.abortDownload = true
+}
+
 bool function DownloadMod( RequiredModInfo mod )
 {
+	// Prompt user to authorize downloading non-approved mods
+	if ( !NSIsModDownloadable( mod.name, mod.version ) && IsModDownloadable( mod ) )
+	{
+		DialogData dialogData
+		dialogData.header = "Download mod?"
+		dialogData.image = $"rui/menu/common/unlock_random"
+
+		string link = mod.downloadLink.len() > 0 ? mod.downloadLink : "https://example.org/"
+		string message = "This mod was not approved by the community, and thus might contain malicious content.\n\n"
+		message += format( "^FFFFFF00Mod:^0 %s v%s\n", mod.name, mod.version )
+		message += "^FFFFFF00Download link:^0 ^5588FF00"
+		message += link
+		message += "^0\n\nDo you want to download this mod?"
+		dialogData.message = message
+		// dialogData.inputDisableTime = 5
+		AddDialogButton(
+			dialogData,
+			"Manually check the mod",
+			void function() : ( dialogData, link )
+			{
+				LaunchExternalWebBrowser( link, WEBBROWSER_FLAG_FORCEEXTERNAL )
+				// Keep the dialog open
+				OpenDialog( dialogData )
+			}
+		)
+		AddDialogButton( dialogData, "#OK", ApproveDownload )
+		AddDialogButton( dialogData, "#CANCEL", AbortDownload )
+		dialogData.forceChoice = true
+		OpenDialog( dialogData )
+
+		// Wait for user selection
+		while ( IsDialogActive( dialogData ) )
+		{
+			WaitFrame()
+		}
+
+		if ( file.abortDownload )
+		{
+			print( format( "User refused downloading unapproved mod \"%s\".", mod.name ) )
+			return false
+		}
+	}
+
 	// Downloading mod UI
 	DialogData dialogData
 	dialogData.header = Localize( "#DOWNLOADING_MOD_TITLE" )
@@ -183,3 +242,14 @@ void function DisplayModDownloadErrorDialog( string modName )
 
 	OpenDialog( dialogData )
 }
+
+/**
+ * Returns whether {mod} can be downloaded, using information from its manifesto.
+ *
+ * This is different from native {NSIsModDownloadable}, which returns whether a
+ * mod has been approved by the community (= appears in the verified mods list).
+*/
+bool function IsModDownloadable( RequiredModInfo mod )
+{
+	return mod.downloadLink.len() > 0
+}

Northstar.Client/mod/scripts/vscripts/ui/menu_ns_serverbrowser.nut

@@ -1104,10 +1104,20 @@ string function FillInServerModsLabel( array<RequiredModInfo> mods )
 		{
 			template = "  %s v%s\n"
 		}
-		// Display a green checkmark if it can be downloaded, a red cross if not
+		// Display a green checkmark if it can be downloaded...
+		else if ( NSIsModDownloadable( mod.name, mod.version ) )
+		{
+			template = "  %s v%s ^00ff0000(↓)^FFFFFFFF\n"
+		}
+		// A yellow checkmark if it features a download link...
+		else if ( IsModDownloadable( mod ) )
+		{
+			template = "  %s v%s ^ffff0000(↓)^FFFFFFFF\n"
+		}
+		// Or a red cross if not
 		else
 		{
-			template = NSIsModDownloadable( mod.name, mod.version ) ? "  %s v%s ^00ff0000(↓)^FFFFFFFF\n" : "  %s v%s ^ff000000(x)^FFFFFFFF\n"
+			template = "  %s v%s ^ff000000(x)^FFFFFFFF\n"
 		}
 
 		ret += format( template, mod.name, mod.version )
@@ -1236,9 +1246,10 @@ void function OnServerSelected_Threaded( string password = "" )
 			if ( autoDownloadAllowed )
 			{
 				bool modIsVerified = NSIsModDownloadable( mod.name, mod.version )
+				bool modHasDownloadLink = IsModDownloadable( mod )
 
 				// Display error message if mod is not verified
-				if ( !modIsVerified )
+				if ( !modIsVerified && !modHasDownloadLink )
 				{
 					DialogData dialogData
 					dialogData.header = "#ERROR"