forked from mff/name_restrictions
115 lines
2.8 KiB
Lua
115 lines
2.8 KiB
Lua
-- name_restrictions mod by ShadowNinja
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-- License: WTFPL
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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 username and try again.",
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["adm[1il]n"] = "Misleading nickname.",
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["[0o]wn[e3]r"] = "Misleading nickname.",
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["^[0-9]+$"] = "All-numeric usernames are disallowed on this server.",
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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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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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.." Annother 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 annother 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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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 annother player's name."
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end
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end
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end)
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