Validate lower bound for available help pages (#251)

cuberite · May 23, 2024 · f9ebbab · f9ebbab
1 parent 9772458
commit f9ebbab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/help.lua b/help.lua
@@ -51,7 +51,7 @@ local function handleHelpPage(a_Player, a_PageNumber, a_Beginning)
 	local firstLine = (a_PageNumber - 1) * g_CommandsPerPage + 1
 	local lastLine = firstLine + g_CommandsPerPage
 	local maxPages = math.ceil(numCommands / g_CommandsPerPage)
-	if (firstLine > numCommands) then
+	if (firstLine > numCommands or firstLine < 0) then
 		a_Player:SendMessageFailure("The requested page is not available. Only pages 1 - " .. maxPages .. " are available.")
 		return true
 	end