Module:Effective protection level

This module provides a way to retrieve the group required to perform a given action on a page. It currently tests the following criteria:

• The page being pending-changes protected: reviewer or autoconfirmed
• The page being in the MediaWiki namespace: sysop
• The page being a JavaScript or CSS subpage in userspace: sysop
• The page being protected: sysop, templateeditor, or autoconfirmed
• The page being used in a cascading-protected page: sysop
• The page's title matching the titleblacklist: templateeditor or autoconfirmed
• A file being moved: filemover
• A page being moved or a file being uploaded: autoconfirmed
• A non-Draft non-talk page being created: user
• Anything else: *

Note that if a template-protected file is moved, both filemover and templateeditor are required, but this will return only templateeditor. This is not likely to be changed any time soon, since template protection currently shouldn't be used on files.

Usage

Warning: This module will use up to 4 expensive parser function calls each time it is ran. It should only be used if the exact effective protection level is necessary. Otherwise, consider using title.protectionLevels instead.

From other modules

To load this module:

local effectiveProtectionLevel = require('Module:Effective protection level')._main

The function accepts two parameters. The first is a string containing the action to check, which must be one of "edit", "create", "move", "upload", or "autoreview". The second is optional, and can either be the name of the page to check, or a title returned from the mw.title functions. If the second parameter is omitted, the page being displayed is the one checked against. The return value is a string containing the name of the group required to perform the given action.

From wikitext

The parameters are the same as when it is called directly.

{{#invoke:Effective protection level|action|title}}

See also

• Module:Effective protection expiry

---

local p = {}

-- Returns the permission required to perform a given action on a given title.
-- If no title is specified, the title of the page being displayed is used.
function p.main(action, pagename, frame)
	if not frame then
		frame = mw.getCurrentFrame()
	end
	local title
	if type(pagename) == 'table' then
		title = pagename
		pagename = title.prefixedText
	else
		title = mw.title.new(pagename) or mw.title.getCurrentTitle()
	end
	if action == 'autoreview' then
		local level = frame:callParserFunction('PENDINGCHANGELEVEL', pagename)
		if level == 'review' then
			return 'reviewer'
		elseif level ~= '' then
			return level
		else
			return nil -- not '*'. a page not being PC-protected is distinct from it being PC-protected with anyone able to review. also not '', as that would mean PC-protected but nobody can review
		end
	elseif action ~= 'edit' and action ~= 'move' and action ~= 'create' and action ~= 'upload' then
		error( 'First parameter must be one of edit, move, create, upload, autoreview', 2 )
	end
	if title.namespace == 8 then -- MediaWiki namespace
		return 'sysop'
	elseif title.namespace == 2 and ( mw.ustring.find( pagename, '/.*%.js$') or mw.ustring.find( pagename, '/.*%.css$') ) then -- user .js or .css page
		return 'sysop'
	else
		local level = title.protectionLevels[action] and title.protectionLevels[action][1]
		if level == 'sysop' then
			return 'sysop'
		elseif frame:callParserFunction('CASCADINGSOURCES', pagename) ~= '' then -- used by a cascading-protected page
			return 'sysop'
		elseif level == 'templateeditor' then
			return 'templateeditor'
		elseif action == 'move' then
			local blacklistentry = mw.ext.TitleBlacklist.test('edit', pagename) -- Testing action edit is correct, since this is for the source page. The target page name gets tested with action move.
			if blacklistentry and not blacklistentry.params.autoconfirmed then
				return 'accountcreator'
			elseif title.namespace == 6 then
				return 'filemover'
			else
				return 'autoconfirmed'
			end
		else
			local blacklistentry = mw.ext.TitleBlacklist.test(action, pagename)
			if blacklistentry then
				return blacklistentry.params.autoconfirmed and 'autoconfirmed' or 'accountcreator'
			elseif level then
				return level
			elseif action == 'upload' then
				return 'autoconfirmed'
			elseif action == 'create' and title.namespace % 2 == 0 and title.namespace ~= 118 then -- You need to be registered, but not autoconfirmed, to create non-talk pages other than drafts
				return 'user'
			else
				return '*'
			end
		end
	end
end

-- Make the protection function usable from wikitext rather than just other lua modules
function p.p(frame)
	local args = frame.args
	local pargs = frame:getParent().args
	return p.main(args.action or args[1] or pargs.action or pargs[1], args.title or args[2] or pargs.title or pargs[2], frame)
end

return p