Turn [name_restrictions] into a submodule
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[submodule "mods/xban2"]
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path = mods/xban2
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url = https://github.com/MinetestForFun/xban2.git
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[submodule "mods/name_restrictions"]
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path = mods/name_restrictions
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url = https://github.com/MinetestForFun/name_restrictions.git
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@ -0,0 +1 @@
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Subproject commit 7aec733ad6ceef3a9dfdf9eacef5e92baa4ed3c0
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@ -1,2 +0,0 @@
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*~
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@ -1,247 +0,0 @@
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-- name_restrictions mod by ShadowNinja
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-- License: WTFPL
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----------------------------
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-- Restriction exemptions --
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----------------------------
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-- For legitimate player names that are caught by the filters.
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local exemptions = {}
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local temp = minetest.setting_get("name_restrictions.exemptions")
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temp = temp and temp:split() or {}
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for _, allowed_name in pairs(temp) do
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exemptions[allowed_name] = true
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end
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temp = nil
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-- Exempt server owner
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exemptions[minetest.setting_get("name")] = true
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exemptions["singleplayer"] = true
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local disallowed_names = {}
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local file = io.open(minetest.get_worldpath("name_restrictions") .. "/forbidden_names.txt", "r")
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if file then
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for line in file:lines() do
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local low_line = line:lower()
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disallowed_names[low_line] = true
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end
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file:close()
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end
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---------------------
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-- Simple matching --
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---------------------
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local disallowed = {
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["^guest[0-9]+"] = "Guest accounts are disallowed on this server." ..
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" Please choose a proper name and try again.",
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["^sadie[0-9]+"] = "Guest accounts are disallowed on this server." ..
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" Please choose a proper name (and client) and try again.",
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["^player[0-9]+"] = "Guest accounts are disallowed on this server." ..
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" Please choose a proper name (and client) and try again.",
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["[4a]dm[1il]n"] = "Misleading name." ..
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" Please choose a proper name and try again.",
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["moder[4a]tor"] = "Misleading name." ..
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" Please choose a proper name and try again.",
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["[0o]wn[e3]r"] = "Misleading name." ..
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" Please choose a proper name and try again.",
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["^[0-9]+$"] = "All-numeric names are disallowed on this server." ..
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" Please choose a proper name and try again.",
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["[0-9].-[0-9].-[0-9].-[0-9].-[0-9].-[0-9]"] = "Too many numbers in your name (must be 5 at most)." ..
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" Please choose a proper name and try again.",
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}
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minetest.register_on_prejoinplayer(function(name, ip)
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local lname = name:lower()
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for re, reason in pairs(disallowed) do
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if lname:find(re) then
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return reason
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end
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end
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if disallowed_names[lname] then
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return "Sorry. This name is forbidden."
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end
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end)
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------------------------
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-- Case-insensitivity --
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------------------------
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minetest.register_on_prejoinplayer(function(name, ip)
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local lname = name:lower()
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for iname, data in pairs(minetest.auth_table) do
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if iname:lower() == lname and iname ~= name then
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return "Sorry, someone else is already using this"
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.." name. Please pick another name."
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.." Another posibility is that you used the"
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.." wrong case for your name."
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end
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end
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end)
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-- Compatability, for old servers with conflicting players
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minetest.register_chatcommand("choosecase", {
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description = "Choose the casing that a player name should have",
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params = "<name>",
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privs = {server = true},
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func = function(name, params)
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local lname = params:lower()
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local worldpath = minetest.get_worldpath()
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for iname, data in pairs(minetest.auth_table) do
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if iname:lower() == lname and iname ~= params then
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minetest.auth_table[iname] = nil
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assert(not iname:find("[/\\]"))
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os.remove(worldpath .. "/players/" .. iname)
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end
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end
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return true, "Done."
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end,
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})
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------------------------
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-- Anti-impersonation --
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------------------------
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-- Prevents names that are too similar to another player's name.
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local similar_chars = {
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-- Only A-Z, a-z, 1-9, dash, and underscore are allowed in playernames
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"A4",
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"B8",
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"COco0",
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"Ee3",
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"Gg69",
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"ILil1",
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"S5",
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"Tt7",
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"Zz2",
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}
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-- Map of characters to a regex of similar characters
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local char_map = {}
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for _, str in pairs(similar_chars) do
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for c in str:gmatch(".") do
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if not char_map[c] then
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char_map[c] = str
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else
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char_map[c] = char_map[c] .. str
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end
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end
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end
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for c, str in pairs(char_map) do
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char_map[c] = "[" .. char_map[c] .."]"
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end
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-- Characters to match for, containing all characters
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local all_chars = "["
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for _, str in pairs(similar_chars) do
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all_chars = all_chars .. str
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end
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all_chars = all_chars .. "]"
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minetest.register_on_prejoinplayer(function(name, ip)
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if exemptions[name] then return end
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-- Generate a regular expression to match all similar names
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local re = name:gsub(all_chars, char_map)
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re = "^[_-]*" .. re .. "[_-]*$"
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for authName, _ in pairs(minetest.auth_table) do
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if authName ~= name and authName:match(re) then
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return "Your name is too similar to another player's name."
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end
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end
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end)
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-----------------
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-- Name length --
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-----------------
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local min_name_len = tonumber(minetest.setting_get("name_restrictions.minimum_name_length")) or 2
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local max_name_len = tonumber(minetest.setting_get("name_restrictions.maximum_name_length")) or 17
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minetest.register_on_prejoinplayer(function(name, ip)
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if exemptions[name] then return end
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if #name < min_name_len then
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return "Your player name is too short"
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.. " (" .. #name .. " characters, must be " .. min_name_len .. " characters at least)."
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.. " Please try a longer name."
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end
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if #name > max_name_len then
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return "Your player name is too long"
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.. " (" .. #name .. " characters, must be " .. max_name_len .. " characters at most)."
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.. " Please try a shorter name."
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end
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end)
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----------------------
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-- Pronounceability --
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----------------------
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-- Original implementation (in Python) by sfan5
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local function pronounceable(pronounceability, text)
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local pronounceable = 0
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local nonpronounceable = 0
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local cn = 0
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local lastc = ""
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for c in text:lower():gmatch(".") do
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if c:find("[aeiou0-9_-]") then
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if not c:find("[0-9]") then
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if cn > 2 then
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nonpronounceable = nonpronounceable + 1
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else
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pronounceable = pronounceable + 1
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end
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end
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cn = 0
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else
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if cn == 1 and lastc == c and lastc ~= 's' then
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nonpronounceable = nonpronounceable + 1
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cn = 0
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end
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if cn > 2 then
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nonpronounceable = nonpronounceable + 1
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cn = 0
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end
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if lastc:find("[aeiou]") then
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pronounceable = pronounceable + 1
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cn = 0
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end
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if not (c == "r" and lastc:find("[aipfom]")) and
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not (lastc == "c" and c == "h") then
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cn = cn + 1
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end
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end
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lastc = c
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end
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if cn > 0 then
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nonpronounceable = nonpronounceable + 1
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end
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return pronounceable * pronounceability >= nonpronounceable
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end
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-- Pronounceability factor:
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-- nil = Checking disabled.
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-- 0 = Everything's unpronounceable.
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-- 0.5 = Strict checking.
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-- 1 = Normal checking.
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-- 2 = Relaxed checking.
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local pronounceability = tonumber(minetest.setting_get("name_restrictions.pronounceability"))
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if pronounceability then
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minetest.register_on_prejoinplayer(function(name, ip)
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if exemptions[name] then return end
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if not pronounceable(pronounceability, name) then
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return "Your player name does not seem to be pronounceable."
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.." Please choose a more pronounceable name."
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end
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end)
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end
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