Refactor name validation: remove numeric check and simplify character validation

[core]/es_extended/shared/config/main.lua

@@ -39,6 +39,14 @@ Config.AdminGroups = {
     ["admin"] = true,
 }
 
+Config.ValidCharacterSets = { -- Only enable additional charsets if your server is multilingual. By default everything is false.
+    ['el'] = false, -- Greek
+    ['sr'] = false, -- Cyrillic
+    ['he'] = false, -- Hebrew
+    ['ar'] = false, -- Arabic
+    ['zh-cn'] = false -- Chinese, Japanese, Korean
+}
+
 Config.EnablePaycheck = true -- enable paycheck
 Config.LogPaycheck = false -- Logs paychecks to a nominated Discord channel via webhook (default is false)
 Config.EnableSocietyPayouts = false -- pay from the society account that the player is employed at? Requirement: esx_society

[core]/es_extended/shared/functions.lua

@@ -210,3 +210,78 @@ function ESX.Await(conditionFunc, errorMessage, timeoutMs)
 
     return false
 end
+
+---@param str string
+---@param allowDigits boolean? Allow numbers if necessary
+---@return boolean
+function ESX.IsValidLocaleString(str, allowDigits)
+    if not ESX.ValidateType(str, 'string') then
+        return false
+    end
+
+    local locale = string.lower(Config.Locale)
+
+    local defaultRanges ={
+        {0x0041, 0x005A}, -- Basic Latin uppercase
+        {0x0061, 0x007A}, -- Basic Latin lowercase
+        {0x0020, 0x0020}, -- Space
+        {0x002D, 0x002D}, -- Dash
+        {0x00C0, 0x02AF}  -- Latin Extended
+    }
+
+    if allowDigits then
+        defaultRanges[#defaultRanges + 1] = {0x0030, 0x0039} -- 0-9 Numbers
+    end
+
+    local localeRanges = {
+        ["el"] = { {0x0370, 0x03FF} }, -- Greek
+        ["sr"] ={ {0x0400, 0x04FF} }, -- Cyrillic
+        ["he"] ={ {0x05D0, 0x05EA} }, -- Hebrew letters
+        ["ar"] = {
+            {0x0620, 0x063F}, -- Arabic
+            {0x0641, 0x064A},
+            {0x066E, 0x066F},
+            {0x0671, 0x06D3},
+            {0x06D5, 0x06D5},
+            {0x0750, 0x077F},
+            {0x08A0, 0x08BD}
+        },
+        ["zh-cn"] ={ {0x4E00, 0x9FFF} } -- CJK
+    }
+
+    local validRanges = { table.unpack(defaultRanges) }
+
+    if localeRanges[locale] then
+        for i = 1, #localeRanges[locale] do
+            validRanges[#validRanges + 1] = localeRanges[locale][i]
+        end
+    end
+
+    if Config.ValidCharacterSets then
+        for charset, enabled in pairs(Config.ValidCharacterSets) do
+            if enabled and charset ~= locale and localeRanges[charset] then
+                for i = 1, #localeRanges[charset] do
+                    validRanges[#validRanges + 1] = localeRanges[charset][i]
+                end
+            end
+        end
+    end
+
+    for _, code in utf8.codes(str) do
+        local isValid = false
+
+        for i = 1, #validRanges do
+            local range = validRanges[i]
+            if code >= range[1] and code <= range[2] then
+                isValid = true
+                break
+            end
+        end
+
+        if not isValid then
+            return false
+        end
+    end
+
+    return true
+end

[core]/esx_identity/server/main.lua

@@ -84,16 +84,8 @@ local function formatDate(str)
     return date
 end
 
-local function checkAlphanumeric(str)
-    return (string.match(str, "%W"))
-end
-
-local function checkForNumbers(str)
-    return (string.match(str, "%d"))
-end
-
 local function checkNameFormat(name)
-    if not checkAlphanumeric(name) and not checkForNumbers(name) then
+    if ESX.IsValidLocaleString(name) then
         local stringLength = string.len(name)
         return stringLength > 0 and stringLength < Config.MaxNameLength
     end