Module:Protection banner

This module creates protection banners and padlock icons that are placed at the top of protected pages.

Usage

Most users will not need to use this module directly. For adding protection templates to pages you can use the {{pp}} template, or you may find it more convenient to use one of the more specific protection templates in the table below.

From wikitext

{{#invoke:Protection banner|main
| 1        = reason
| small    = yes/no
| action   = action
| date     = protection date
| user     = username
| section  = talk page section name
| category = no
}}

The #invoke syntax can be used for creating protection templates more specific than {{pp}}. For example, it is possible to create a protection template which always shows a padlock icon by using the code {{#invoke:Protection banner|main|small=yes}}. Pages which call this template will still be able to use other arguments, like action. However, this only works one level deep; a page calling a template which calls another template containing the above code will not automatically be able to use parameters like action.

Note: You should no longer specify the expiry, as it is automatically retrieved in all cases.

From Lua

First, load the module.

local mProtectionBanner = require('Module:Protection banner')

Then you can make protection banners by using the _main function.

mProtectionBanner._main(args, cfg, titleObj)

args is a table of arguments to pass to the module. For possible keys and values for this table, see the parameters section. The cfg and titleObj variables are intended only for testing; cfg specifies a customised config table to use instead of Module:Protection banner/config, and titleObj specifies a mw.title object to use instead of the current title. args, cfg and titleObj are all optional.

Parameters

All parameters are optional.

• 1 - the reason that the page was protected. If set, this must be one of the values listed in the reasons table.
• small - if set to "yes", "y", "1", or "true", a padlock icon is generated instead of a full protection banner.
• action - the protection action. Must be one of "edit" (for normal protection), "move" (for move-protection) or "autoreview" (for pending changes). The default value is "edit".
• date - the protection date. This must be valid input to the second parameter of the #time parser function. This argument has an effect for reasons that use the PROTECTIONDATE parameter in their configuration. As of July 2014, those were the "office" and "reset" reasons.
• user - the username of the user to generate links for. As of July 2014, this only has an effect when the "usertalk" reason is specified.
• section - the section name of the protected page's talk page where discussion is taking place. This works for most, but not all, values of reason.
• category - categories are suppressed if this is set to "no", "n", "0", or "false".

Reasons

The following table contains the available reasons, plus the actions for which they are available.

Reason	Action	Description
blp	edit	For pages protected to promote compliance with the biographies of living persons policy
dispute	edit	For pages protected due to editing disputes
dmca	edit	For pages protected by the Wikimedia Foundation due to Digital Millennium Copyright Act takedown requests
ecp	edit	For articles in topic areas authorized by ArbCom or meets the criteria for community use
mainpage	edit	For pages protected for being displayed on the Main Page
office	edit	For pages protected by the Wikimedia Foundation
reset	edit	For pages protected by the Wikimedia Foundation and "reset" to a bare-bones version
sock	edit	For pages protected due to sock puppetry
template	edit	For high-risk templates and Lua modules
usertalk	edit	For pages protected against disruptive edits by a particular user
vandalism	edit	For pages protected against vandalism
dispute	move	For pages protected against page moves due to disputes over the page title
vandalism	move	For pages protected against page-move vandalism

Errors

Below is a list of some of the common errors that this module can produce, and how to fix them.

Invalid protection date

This error is produced if you supply an |date= parameter value that is not recognised as a valid date by the #time parser function. If in doubt, you can just use a date in the format "dd Month YYYY", e.g. "9 June 2024". To see a full range of valid inputs, see the #time documentation (only the first parameter, the format string, may be specified).

Invalid action

This error is produced if you specify an invalid protection action. There are only three valid actions: edit (the default, for normal protection), move (for move-protection), and autoreview (for pending changes). This should only be possible if you are using a template that supports manually specifying the protection action, such as {{pp}}, or if you are using #invoke directly. If this is not the case, please leave a message on Module talk:Protection banner.

Reasons cannot contain the pipe character

This error is produced if you specify a reason using the |1= parameter that includes a pipe character ("|"). Please check that you are not entering the {{!}} template into this parameter by mistake. The pipe character is disallowed as the module uses it internally. A list of valid reasons can be seen in the reasons section.

Other errors

If you see an error other than the ones above, it is likely to either be a bug in the module or mistake in the configuration. Please post a message about it at Module talk:Protection banner.

Technical details

This module uses configuration data from Module:Protection banner/config. Most of the module's behaviour can be configured there, making it easily portable across different wikis and different languages.

General test cases for the module can be found at Module:Protection banner/testcases, and test cases specific to enwiki's config can be found at Module:Protection banner/config/testcases.

Bug reports and feature requests should be made on the module's talk page.

---

-- This module implements {{pp-meta}} and its daughter templates such as
-- {{pp-dispute}}, {{pp-vandalism}} and {{pp-sock}}.

-- Initialise necessary modules.
local mArguments = require('Module:Arguments')
local mProtectionLevel = require('Module:Effective protection level')._main
local mFileLink = require('Module:File link')
local yesno = require('Module:Yesno')
local mMessageBox -- only needs to be loaded if we are outputting a banner, so lazily initialise

-- Load config
local cfg = mw.loadData('Module:Protection banner/config')

local p = {}

--------------------------------------------------------------------------------
-- Helper functions
--------------------------------------------------------------------------------

local function validateField(tName, t, field, expectType, nilOk)
	local val = t[field]
	local valType = type(val)
	if not (valType == expectType or nilOk and valType == 'nil') then
		error(string.format(
			"type error in '%s' field '%s' (%s%s expected, got %s)",
			tName,
			tostring(field),
			expectType,
			nilOk and ' or nil' or '',
			valType
		), 2)
	end
end

local function toTableEnd(t, pos)
	-- Sends the value at position pos to the end of array t, and shifts the
	-- other items down accordingly.
	return table.insert(t, table.remove(t, pos))
end

--------------------------------------------------------------------------------
-- Main functions
--------------------------------------------------------------------------------

function p.main(frame)
	local args = mArguments.getArgs(frame)
	return p._main(args)
end

function p._main(args)
	local protectionLevel = p.getProtectionLevel(args)
	local isSmall = yesno(args.small) or false
	local bannerConfig = p.getBannerConfig(protectionLevel, args)

	local ret = ''
	if isSmall then
		ret = ret .. p.makePadlock(protectionLevel, args, bannerConfig)
	else
		ret = ret .. p.makeBanner(protectionLevel, args, bannerConfig)
	end
	ret = ret .. p.getProtectionCategory(protectionLevel, args)
	ret = ret .. p.getTrackingCategories(protectionLevel, args)
	return ret
end

--------------------------------------------------------------------------------
-- Protection functions
--------------------------------------------------------------------------------

function p.getProtectionLevel(args)
	local title
	if args.page then
		title = mw.title.new(args.page)
	else
		title = mw.title.getCurrentTitle()
	end
	local protectionData = p.getProtectionData(title)
	protectionLevel = protectionData[args.action or 'edit']
	return protectionLevel or '*'
end

function p.getProtectionData(title)
	-- Gets a table containing protection data for the given title. The data
	-- is cached using a metatable, and so can be indexed as needed without
	-- a performance loss.
	local protectionData = {}
	local actions = {
		create = true,
		edit = true,
		move = true,
		autoreview = true
	}
	setmetatable(protectionData, {
		__index = function (t, key)
			local level
			if actions[key] then
				level = mProtectionLevel(key, title)
				if level == 'accountcreator' then
					-- Lump titleblacklisted pages in with template-protected pages,
					-- since templateeditors can do both.
					level = 'templateeditor'
				end
			end
			protectionData[key] = level
			return level
		end
	})
	return protectionData
end	

--------------------------------------------------------------------------------
-- Banner config functions
--------------------------------------------------------------------------------

function p.getBannerConfig(protectionLevel, args)
end

--------------------------------------------------------------------------------
-- Padlock functions
--------------------------------------------------------------------------------

function p.makePadlock(protectionLevel, args, bannerConfig)
	local data = p.makePadlockData(protectionLevel, args, bannerConfig)
	return p.renderPadlock(data)
end

function p.makePadlockData(protectionLevel, args, bannerConfig)
end

function p.renderPadlock(data)
	data = data or {}
	local image = mFileLink.new(data.filename or 'Transparent.gif')
		:width(20)
		:link(data.link)
		:alt(data.alt)
		:render()
	local root = mw.html.create('div')
	root
		:addClass('metadata topicon nopopups')
		:attr('id', 'protected-icon')
		:css{display = 'none', right = data.right or '55px'}
		:wikitext(image)
	return tostring(root)
end

--------------------------------------------------------------------------------
-- Banner functions
--------------------------------------------------------------------------------

function p.makeBanner(protectionLevel, args, bannerConfig)
	local data = p.makeBannerData(protectionLevel, args, bannerConfig)
	return p.renderBanner(data)
end

function p.makeBannerData(protectionLevel, args, bannerConfig)
end

function p.renderBanner(data)
	data = data or {}
	local image = mFileLink.new(data.filename)
		:width(40)
		:caption(data.mouseover)
		:render()
	local mbargs = {
		page = data.page,
		type = 'protection',
		image = image,
		text = string.format(
			"'''%s'''%s",
			data.reasonText,
			data.explanationText and '<br />' .. data.explanationText or ''
		)
	}
	return mMessageBox.main('mbox', mbargs)
end

--------------------------------------------------------------------------------
-- Protection category functions
--------------------------------------------------------------------------------

function p.getProtectionCategory(protectionLevel, args)
end

function p.getPagetype(ns)
	-- Returns a string with the page's type. Takes a namespace number as input.
	local pagetype = pagetypeNamespaces[ns] or pagetypeNamespaces.default
	if not pagetype then
		error('the page type could not be found; please define a name for the key "default"')
	end
	return pagetype
end

function p.matchNamespace(ns)
	-- Matches a namespace number to a string that can be passed to the
	-- namespace parameter of p.getCategoryName.
	if not ns or type(ns) ~= 'number' then
		return nil
	end
	local nskey = cfg.categoryNamespaces[ns]
	if not nskey and ns % 2 == 1 then
			nskey = 'talk'
	end
	return nskey
end

function p.getCategoryName(cats, action, level, namespace, reason, expiry)
	--[[
	-- Gets a category name from the category table, given a combination of
	-- the protection type, the protection level, the namespace number, the
	-- reason for protection, and the expiry date.
	--]]
	cats = cats or cfg.categories

	--[[
	-- Define the properties table. Each property is a table containing the
	-- canonical order that the property is tested in, the position the
	-- property has in the category key strings, and the property value itself.
	--]]
	local properties = {
		expiry = {order = 1, keypos = 5, val = expiry},
		namespace = {order = 2, keypos = 3, val = p.matchNamespace(namespace)},
		reason = {order = 3, keypos = 4, val = reason},
		level = {order = 4, keypos = 2, val = level},
		action = {order = 5, keypos = 1, val = action}
	}

	--[[
	-- Load the category order configuration for the reason specified.
	-- The configuration is stored in the categoryOrder field of each reason
	-- subtable of cfg.reasons. If the value is a table, then the order is the
	-- values specified in the table. If the value is a string, then the
	-- property corresponding to that string is tested last (i.e. it is the most
	-- important, because it keeps its specified value the longest) and the
	-- other properties are tested in the canonical order. If the value is of
	-- any other type then the canonical order is used.
	--]]
	local reasonTable = reason and cfg.reasons[reason]
	local categoryOrder = reasonTable and reasonTable.categoryOrder
	local categoryOrderType = type(categoryOrder)
	local configOrder = {}
	if categoryOrderType == 'table' then
		local dupes = {}
		for i = 1, 5 do
			local propertiesKey = categoryOrder[i]
			if not propertiesKey then
				local msg = 'no entry found for key '
					.. i
					.. ' in the cfg.reasons.'
					.. reason
					.. '.categoryOrder table'
				error(msg)
			end
			local property = properties[propertiesKey]
			if not property then
				local msg = 'invalid value "'
					.. propertiesKey
					.. '" detected in the cfg.reasons.'
					.. reason
					.. '.categoryOrder table'
				error(msg)
			end
			if dupes[propertiesKey] then
				local msg = 'duplicate values "'
					.. propertiesKey
					.. '" detected in the cfg.reasons.'
					.. reason
					.. '.categoryOrder table'
				error(msg)
			else
				dupes[propertiesKey] = true
			end
			configOrder[i] = property
		end
	else
		for propertiesKey, t in pairs(properties) do
			configOrder[t.order] = t
		end
		if categoryOrderType == 'string' then
			local property = properties[categoryOrder]
			if not property then
				local msg = '"'
					.. categoryOrder
					.. '" is not a valid value of cfg.reasons.'
					.. reason
					.. '.categoryOrder'
				error(msg)
			end
			toTableEnd(configOrder, property.order)
		end
	end

	--[[
	-- Define the attempt order. Properties with no value defined are moved
	-- to the end, where they will later be given the value "all". This is
	-- to cut down on the number of table lookups in the cats table, which
	-- grows exponentially with the number of properties with valid values.
	-- We keep track of the number of active properties with the noActive
	-- parameter.
	--]]
	local active, inactive = {}, {}
	for i, t in ipairs(configOrder) do
		if t.val then
			active[#active + 1] = t
		else
			inactive[#inactive + 1] = t
		end
	end
	local noActive = #active
	local attemptOrder = active
	for i, t in ipairs(inactive) do
		attemptOrder[#attemptOrder + 1] = t
	end

	--[[
	-- Check increasingly generic key combinations until we find a match.
	-- If a specific category exists for the combination of properties
	-- we are given, that match will be found first. If not, we keep
	-- trying different key combinations until we match using the key
	-- "all-all-all-all-all".
	--
	-- To generate the keys, we index the property subtables using a
	-- binary matrix with indexes i and j. j is only calculated up to
	-- the number of active properties. For example, if there were three
	-- active properties, the matrix would look like this, with 0
	-- corresponding to the string "all", and 1 corresponding to the
	-- val field in the property table:
	-- 
	--   j 1  2  3
	-- i  
	-- 1   1  1  1
	-- 2   0  1  1
	-- 3   1  0  1
	-- 4   0  0  1
	-- 5   1  1  0
	-- 6   0  1  0
	-- 7   1  0  0
	-- 8   0  0  0
	-- 
	-- Values of j higher than the number of active properties are set
	-- to the string "all".
	--
	-- A key for the category table is constructed for each value of i.
	-- The correct position of the value in the key is determined by the
	-- pos field in the property table.
	--]]
	for i = 1, 2^noActive do
		local key = {}
		for j, t in ipairs(attemptOrder) do
			if j > noActive then
				key[t.keypos] = 'all'
			else
				local quotient = i / 2 ^ (j - 1)
				quotient = math.ceil(quotient)
				if quotient % 2 == 1 then
					key[t.keypos] = t.val
				else
					key[t.keypos] = 'all'
				end
			end
		end
		key = table.concat(key, '-')
		local attempt = cats[key]
		if attempt then
			return attempt
		end
	end
	error(
		'No category match found;'
		.. ' please define the category for key "all-all-all-all-all"'
	)
end

--------------------------------------------------------------------------------
-- Tracking category functions
--------------------------------------------------------------------------------

function p.getTrackingCategories(protectionLevel, args)
end

--[[
When to add "Category:Wikipedia pages with incorrect protection templates":
* If it uses a type which is incompatible with the actual protection level of a page, or
* If an expiry date is set and is in the past

When to add "Category:Wikipedia protected pages without expiry":
* No expiry is set, and
* Expiry can be set, and
* The protection type is not "move" (could change this?), and
* The reason doesn't have "indefinitely protected" categories (pp-blp, pp-semi-indef and pp-move-indef have these), and
* The reason is not the generic pp-protected (could change this?)
(This leaves reasons "dispute", "vandalism", "usertalk", and "sock")
]]

return p