Extension inventory

This page serves to inventory and assess the mix of extensions that are in use for the DCS wiki. Code for "regular" extensions are hosted on Gerrit at the WMF (which is also mirrored to GitHub) with documentation at https://www.mediawiki.org/wiki. Code for the DCS extensions is in the private Debt Compliance GitHub repo; and the Organic Design extensions are in the 'MediaWiki' tree of the Organic Design GitHub repo.

Mime Report

In the DCS custom extensions, here are the file counts by file-type:

    14 .css
     6 .gif
     1 .ico
     1 .jpg
     9 .js
    43 .json
    69 .php
     8 .pl
     4 .png
     1 .svg

Source Code Summary

Source Lines of Code (SLOC)

SLOC	Directory	SLOC-by-Language (Sorted)
1873	DcsJobAdmin	perl=985,php=779,javascript=109
751	DcsCommon	php=548,javascript=203
551	DcsSearch	javascript=282,php=269
481	DcsNamespaces	php=425,javascript=56
379	DcsAmmendments	php=203,javascript=176
315	DcsTitle	php=315
269	DcsSingleSignOn	php=269
258	DcsSection	php=258
230	DcsNuke	php=230
208	DcsComplianceChecklist	php=208
178	DcsExportTerms	php=178
168	DcsComplianceChecklist2	php=168
158	DcsGroupAdmin	php=158
139	DcsWatchComments	php=139
123	DcsUserDisable	php=78,javascript=45
110	DcsLoanPages	php=110
104	DcsBaskets	php=57,javascript=47
90	DcsSkin	php=90
88	DcsFindTitle	php=88
70	DcsUploadedFiles	php=70
40	DcsEmailLink	php=40
0	DcsSection2	(none)

Totals grouped by language (dominant language first)

php:	4680 (71.09%)
perl:	985 (14.96%)
javascript:	918 (13.95%)

Total Physical Source Lines of Code (SLOC)                = 6,583
Development Effort Estimate, Person-Years (Person-Months) = 1.45 (17.36)
  (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05))
Schedule Estimate, Years (Months)                         = 0.62 (7.40)
  (Basic COCOMO model, Months = 2.5 * (person-months**0.38))
Estimated Average Number of Developers (Effort/Schedule)  = 2.35
Total Estimated Cost to Develop                           = $ 195,428
  (average salary = $56,286/year, overhead = 2.40; calculated in 2004 dollars)

And for the 'tools' directory

Source Lines of Code (SLOC)

SLOC	Directory	SLOC-by-Language (Sorted)
4817	top_dir	perl=3838,php=648,sh=331
345	crowdrating.org	perl=345
172	jobs	perl=121,php=51
63	bm-gateway	python=63
4	meditation	perl=4
3	docker	sh=3
0	atom	(none)
0	icons	(none)
0	nginx	(none)

Totals grouped by language (dominant language first)

perl:	4308 (79.72%)
php:	699 (12.93%)
sh:	334 (6.18%)
python:	63 (1.17%)

Total Physical Source Lines of Code (SLOC)                = 5,404
Development Effort Estimate, Person-Years (Person-Months) = 1.18 (14.11)
 (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05))
Schedule Estimate, Years (Months)                         = 0.57 (6.84)
 (Basic COCOMO model, Months = 2.5 * (person-months**0.38))
Estimated Average Number of Developers (Effort/Schedule)  = 2.06
Total Estimated Cost to Develop                           = $ 158,852
 (average salary = $56,286/year, overhead = 2.40).

"Regular" Extensions

Extension	Used by WMF projects?	What does it do?	Maintenance / Last release	Used by Meza	Used by QualityBox	In use? Alternatives?
CirrusSearch	Yes	Extends the core search for MediaWiki to be able to use Elasticsearch	Continuous	Yes	Yes	Yes
Cite	Bundled in the official tarball release of MediaWiki (aka 'the download').	Provides <references /> and <ref></ref> tags	Continuous	Yes	Yes	UNUSED
CiteThisPage	Bundled	Provides Cite This Page Special Page.	Continuous	No	Yes	UNUSED
ConfirmEdit	Bundled	Adds CAPTCHAs for page saves and other user actions to protect against spam and password-guessing	Continuous	No	Yes	UNUSED
Elastica	Yes	Base Elasticsearch functionality by providing the Elastica library; required by CirrusSearch.	Continuous	Yes	Yes	Yes
Gadgets	Bundled	Provides a way for users to pick JavaScript or CSS based "gadgets" that other wiki users provide.	Continuous	No	Yes	UNUSED
ImageMap	Bundled	The ImageMap extension allows clickable image maps.	Continuous	Yes	Yes	UNUSED
InputBox	Bundled	The InputBox extension adds already created HTML forms to wiki pages. So, for example, a search box on a page or category with many subpages; preconfigured to "Search this space".	Continuous	Yes	Yes	UNUSED
Interwiki	Bundled	The Interwiki extension adds the "Special:Interwiki" page to MediaWiki, to view and edit the interwiki table, and a log of any actions made with it.	Continuous	Yes	Yes	UNUSED
LocalisationUpdate	Bundled	Allows to update the localizations for MediaWiki messages at any time, without needing to upgrade the MediaWiki software.	Continuous	No	No	UNUSED
Nuke	Bundled	The Nuke extension makes it possible for sysops to mass delete pages.	Continuous	No	Yes	For whatever reason, the DCSNuke extension intercepts page requests for the Nuke special page. DCSNuke has no added functionality. The DCSNuke code is roughly equivalent to the REL1_20 release of Nuke; and the current Nuke extension offers more functionality. I thought that potentially the reason to use a cloned extension was to totally customize the interface language strings, but that's not the case. Remove DCSNuke.
ParserFunctions	Bundled	Enhances the wikitext parser with helpful functions, mostly related to logic and string-handling.	Continuous maintenance	Yes	Yes	Yes
PdfHandler	Bundled	The PdfHandler extension shows uploaded pdf files in a multipage preview layout. With the Proofread Page extension, pdfs can be displayed side-by-side with text. This allows users to transcribe books and other documents.	Continuous	Disabled	Yes	UNUSED
PipeEscape	Bundled	The Pipe Escape extension allows for pipe characters in parser function arguments (and template argument calls) avoid being interpreted as an argument delimiter. This is primarily for the purpose of using wiki tables (or parts thereof) inside parser function calls or templates.	Old but stable	Yes	Yes	Included via DcsSetup
Poem	Bundled	The Poem extension allows easy formatting of poems and similar material within Wikitext. Once the extension is enabled, you can put any block of text within <poem></poem> tags	Continuous updates	No	Yes	UNUSED
Renameuser	Bundled	The Renameuser extension provides a special page which allows authorized users to rename user accounts. This will cause page histories, etc. to be updated. If you want to rename an account "into" another, already existing one, you need the User Merge and Delete extension.	Continuous updates	No	Yes	UNUSED
SimpleMathJax	No, WMF uses the Math extension	The SimpleMathJax extension enables MathJax, a Javascript library, for typesetting TeX formula in MediaWiki inside math environments. This extension will load resources from cdnjs.cloudflare.com on all wiki pages that have math or chem tags.	Regular maintenance	Yes	Yes	included by DcsSetup.php
SpamBlacklist	Bundled	The SpamBlacklist extension prevents edits that contain URLs whose domains match regular expression patterns defined in specified files or wiki pages and registration by users using specified email addresses. When someone tries to save a page, SpamBlacklist checks the text against a (potentially very large) list of illegal host names. If there is a match, the extension displays an error message to the user and refuses to save the page.	Continuous updates	No	No	UNUSED
SyntaxHighlight_GeSHi (now known simply as SyntaxHighlight)	Bundled	Provides rich formatting of source code using the <syntaxhighlight> tag. It is powered by the Pygments library and supports hundreds of different programming languages and file formats.	continuous updates	Yes	Yes	UNUSED
TitleBlacklist	Bundled	Combat spam and vandalism. Allows wiki administrators to block the creation, movement and upload of pages, the title of which matches one or more regular expressions, as well as blocking creation of accounts with matching usernames. (Prevent account creation by "he who shall not be named" or prevent pages like "Sh*t".	1.5.0 (2014-03-29) some oversight by WMF	No	No	UNUSED
WikiEditor	Bundled	The WikiEditor extension provides an improved interface for editing wikitext. It is the wikitext editing interface that Wikipedia started using in 2010 for desktop users, and so it is sometimes called the "2010 wikitext editor".	0.5.1 (2016-04-15) some oversight by WMF	Yes	Yes	Yes

Custom DCS Extensions

Extension	Purpose	Last release	Example usage + notes
DcsAmmendments	Adds ammendments section to DCS loan pages. Sysop (only) can add/delete/edit/re-order (up/down) the ammendments; UX implemented in JavaScript. Extends the API with the same functions. Adds new log type: amendments; and logs all actions.	Jan 2018 - new sort functionality ready for testing	https://clienttest.dm.dcstemporary.com/ARCA14:1.5_Time_References
DcsBaskets	This extension allows the utilization column of the Baskets tables to be edited directly using AJAX and saving values into 'basket' tables rather than in the traditional wiki-text revision tables.	1.4.3, 2018-05-25	Unable to find example.
DcsCommon	Cookie handling was added on June 14, 2017. The code (the cookie.js part) is from a project called js-cookie. So, we could update that code. Or, we could replace it with internal functions so we don't rely on 3rd party code. See the API documentation for mw.cookie (Does not use the $wgCookieSecure configuration variable since 'detect' could not work with ResourceLoaderStartUpModule; as module cache is not fragmented by protocol.) The mw.cookie (JavaScript) code is syntactically and functionally similar to the server-side cookie API (`WebRequest#getCookie` and `WebResponse#setcookie`). https://www.mediawiki.org/wiki/Manual:Hooks/UserSetCookies is deprecated as of REL1_27, and session-handling extensions should be subclassing CookieSessionProvider. $wgSessionProviders The class creates methods for outputting messages, notices, dates, getting raw content. It loads some javascript (through resource loader). That javascript could more easily be maintained as MediaWiki:Common.js? although there may be load order issues. The JS defines like-named methods with varying features. E.g. Check if the passed page title string is in a loan namespace, returns boolean. Note that this function only checks if the namespace is in the list of all loan namespaces, it doesn't do any checks for whether the namespace is in use, or whether the title is in a DCS_TOC article like the DcsCommon::isLoanPage PHP function. The series of extensions create DcsInit() (in DcsEmailLink), DcsBlockPageAccess(), and DcsReady() hook functions. DcsReady() implementations are different across different classes from Basket to DcsSingleSignOn. The 'common' extension creates a singleton instance of the DcsCommon class that does a bunch of things according to notes in the wiki. The permissions shouldn't really be hidden away in the class code. They should simply be in LocalSettings.php. onUserGetRights() is a big function. The 'self:cache' is mostly called in connection with 'isLocal'. Any true caching should just be offloaded to APC and memcache. Although there is no 'dcs' table in the database on dcsTemporary, the setData() method is used throughout the codebase so should update wiki about where this data is stored.	recent	pervasive
DcsComplianceChecklist	purpose?	release?	yes
DcsComplianceChecklist2	purpose?	release?	only used in the checktest subdomain, or when `wgLocalTesting`; intention is to use a timestamp condition
DcsEmailLink	purpose?	release?	yes
DcsExportTerms	purpose?	release?	yes
DcsFindTitle	purpose?	release?	yes
DcsGroupAdmin	purpose?	release?	yes
DcsJobAdmin	Creates a Special Page Special:DcsJobAdmin where you can start a new job; or view current and historical jobs. Each job type loads it's own form into the Admin page. The job runner extends the Maintenance class, and loops over running jobs to provide some progress reporting. It saves the most recent 10 jobs to a 'history' list. There are functions in the code for: Return a list of the currently running jobs sorted by start time. Add a job to the 'history' list of jobs executed (list is limited to 10 items). Get a 'history' list of the last 10 jobs Get job data (both current and history) shell_exec() to the process table to find DcsJobRunner. Return the currently running jobs by Process ID (PID) register the PHP code classes for each job type: Change Namespace EditTest Import ImportXML Links PhpTest ReplaceText UpgradeAttachments Each (or almost all?) PHP file is backed by a perl file which was the basis for the PHP development? I'm not really sure why everything is written twice. According to the documentation, it allows you to manage jobs. But, I'm wondering how much this is actually used? The job queue should be run automatically by cron, and the administrative user shouldn't have to worry about it really. If there is a usage pattern where job execution is time sensitive, there is a use for an Admin function; but I'm curious about the usage patterns that create large or numerous jobs. Otherwise, set wgJobRunRate to zero, and put it into cron `0 0 * * * root /usr/bin/php /var/www/example.com/www/w/maintenance/runJobs.php > /var/log/runJobs.log 2>&1`	2018-05-25	yes
DcsLoanPages	purpose?	release?	yes
DcsNamespaces	purpose?	release?	yes
DcsNuke	purpose?	release?	yes. REPLACE with standard Nuke extension
DcsSearch	purpose?	release?	yes
DcsSection	purpose?	release?	yes
DcsSection2	purpose?	release?	NO
DcsSingleSignOn	purpose?	release?	yes
DcsSkin	Custom 'style' to match DCS website / frontend	release?	Yes
DcsTitle	purpose?	release?	yes
DcsUploadedFiles	purpose?	release?	yes
DcsUserDisable	purpose?	release?	yes
DcsWatchComments	purpose?	release?	yes

Organic Design extensions

ONLY extensions marked with ** are actually used by DCS

1. Accordian
2. AddLinkClasses
3. AjaxComments **
4. ArticleProperties
5. Bliki
6. CodeTidy
7. CurrentPages
8. CurrentUsers
9. Download
10. EmailPage **
11. EmailToWiki
12. EximMailList
13. ExtraMagic **
14. FaceBook
15. FileAttach
16. FormMailer
17. HighlightJS
18. InterWiki
19. jQueryUpload **
20. jQueryUpload2
21. Ligmincha
22. LinkAttributes
23. LinkTree
24. NukeDPL
25. ODMaps
26. OrganicDesign
27. PdfBook **
28. RecentActivity
29. SimpleCalendar
30. TransformChanges
31. TreeAndMenu **
32. UserLoginLog
33. UserProfiles
34. Variables
35. WebSocket
36. WikiaAdmin
37. WikiaInfo

Special:Version

This is what you'll see reported by the "Special:Version" page of the wiki

Installed skins

Skin	Version	License	Description	Authors
Cologne Blue	–	GPL-2.0+	A lightweight skin with minimal formatting	Lee Daniel Crocker and others
DcsSkin	3.0.2, 2016-07-01	Copyright © 2007-2018 Debt Compliance Services	DCS skin desgined to match the QAR app	Aran Dunkley
Modern	–	GPL-2.0+	A blue/gray theme with sidebar and top bar. Derived from MonoBook	River Tarnell and others
MonoBook	–	GPL-2.0+	The classic MediaWiki skin since 2004, named after the black-and-white photo of a book in the page background	Gabriel Wicke and others
Vector	–	GPL-2.0+	Modern version of MonoBook with fresh look and many usability improvements	Trevor Parscal, Roan Kattouw and others

Installed extensions

Special pages
Extension	Version	License	Description	Authors
DcsGroupAdmin	1.2.0, 2015-06-26	Copyright © 2007-2018 Debt Compliance Services	A special page for managing DCS groups and access	Aran Dunkley
DcsJobAdmin	4.0.0, 2017-06-28	Copyright © 2007-2018 Debt Compliance Services	A special page for managing DCS jobs that run in the background	Aran Dunkley
DcsSearch	2.4.2, 2017-01-27	Copyright © 2007-2018 Debt Compliance Services	Renders the search dropdown with favourite terms list, and allows users to track the pages they've visited from search results of their favorite terms	Aran Dunkley
DcsUploadedFiles	1.3.0, 2017-07-08	Copyright © 2007-2018 Debt Compliance Services	A special page for listing the files uploaded to loan pages	Aran Dunkley
EmailPage	2.4.4, 2017-04-26	GPL-2.0+	Send rendered HTML page to an e-mail address or list of addresses using phpmailer	Aran Dunkley
jQueryUpload	1.4.5, 2016-08-28	GNU General Public Licence 2.0 or later	Allows files to be uploaded to the wiki or to specific pages using the jQueryFileUpload module	Aran Dunkley and Sebastian Tschan
Nuke	1.2.0	GPL-2.0+	Gives administrators the ability to mass delete pages	Brion Vibber and Jeroen De Dauw
Parser hooks
Extension	Version	License	Description	Authors
DcsComplianceChecklist	1.24.2, 2016-05-10	Copyright © 2007-2018 Debt Compliance Services	Creates the #ComplianceChecklist parser-function	Aran Dunkley
ExtraMagic	3.8.0, 2015-010-04	GNU General Public Licence 2.0 or later	Adds useful variables and parser functions	Aran Dunkley
ParserFunctions	1.6.0	GPL-2.0	Enhance parser with logical functions	Tim Starling, Robert Rohde, Ross McClure and Juraj Simlovic
PdfBook	1.5.2, 2017-05-15	GNU General Public Licence 2.0 or later	pdfbook-desc	Aran Dunkley
Pipe Escape	2.0.0. (a36d2d6)23:54, 4 May 2016	GPL-2.0+	Parser function #! for when you want a pipe character to be just a pipe character	David M. Sledge and Purodha Blissenbach
TreeAndMenu	4.2.1, 2016-05-24	GNU General Public Licence 2.0 or later	Adds #tree and #menu parser functions which contain bullet-lists to be rendered as collapsible treeviews or dropdown menus. The treeviews use the FancyTree JavaScript tree menu, and the dropdown menus use Son of Suckerfish	Aran Dunkley
Other
Extension	Version	License	Description	Authors
AjaxComments	2.7.2, 2017-03-08	GNU General Public Licence 2.0 or later	Add comments to the end of the page that can be edited, deleted or replied to instead of using the talk pages	Aran Dunkley
CirrusSearch	0.2 (dcb0cf9)21:22, 4 May 2016	GPL-2.0+	Elasticsearch-powered search for MediaWiki	Nik Everett, Chad Horohoe, Erik Bernhardson and others
DcsAmmendments	1.1.0, 2018-01-20	Copyright © 2015-2018 Debt Compliance Services	Adds ammendments section to DCS loan pages	Aran Dunkley
DcsBaskets	1.4.2, 2016-08-08	Copyright © 2007-2018 Debt Compliance Services	Allows fields in Baskets table to be updated via AJAX	Aran Dunkley
DcsCommon	5.1.1, 2018-01-25	Copyright © 2007-2018 Debt Compliance Services	DCS common functionality	Aran Dunkley
DcsEmailLink	0.0.1, 2017-07-12	Copyright © 2017-2018 Debt Compliance Services	Adds a new "EmailLink" action which can match a title case-insensitvely	Aran Dunkley
DcsExportTerms	2.0.1, 2017-03-20	Copyright © 2007-2018 Debt Compliance Services	Add an export action to the that allows terms to be downloaded in CSV format	Aran Dunkley
DcsFindTitle	1.1.0, 2017-01-30	Copyright © 2007-2018 Debt Compliance Services	Adds a new "find" action which can match a title case-insensitvely	Aran Dunkley
DcsLoanPages	2.5.2, 2016-05-17	Copyright © 2007-2018 Debt Compliance Services	Adds breadcrumbs, comments and backlinks to DCS loan pages	Aran Dunkley
DcsNamespaces	2.5.0, 2015-12-12	Copyright © 2007-2018 Debt Compliance Services	A special page for administering loan documents in their own namepsaces	Aran Dunkley
DcsNuke	1.2.2, 2017-01-19	Copyright © 2007-2018 Debt Compliance Services	Gives administrators the ability to mass delete pages	Aran Dunkley
DcsSection2	2.0.0, 2018-01-12	Copyright © 2007-2018 Debt Compliance Services	DCS article section handling extension - new version 2 with individual sub-section article support removed	Aran Dunkley
DcsSingleSignOn	5.1.5, 2017-07-14	Copyright © 2007-2018 Debt Compliance Services	Allows the Rails application to manage the login, logout and session expiry for the DCS wikis	Aran Dunkley
DcsTitle	1.0.0, 2017-02-13	Copyright © 2017-2018 Debt Compliance Services	Creates a new DCS-specific Title class that includes TOC info such as sortkey, next and prev	Aran Dunkley
DcsUserDisable	1.3.0, 2015-06-26	Copyright © 2007-2018 Debt Compliance Services	Adds acount enable/disable links to the user list	Aran Dunkley
DcsWatchComments	1.4, 2017-03-09	Copyright © 2007-2018 Debt Compliance Services	Removes default watchlist functionality and makes all loan comment articles auto-watched	Aran Dunkley
Elastica	1.3.0.0 (4607acf)22:52, 4 May 2016	GPL-2.0+	Base Elasticsearch functionality for other extensions by providing Elastica library	Nik Everett and Chad Horohoe
WikiEditor	0.5.0	GPL-2.0+	Provides an extendable wikitext editing interface and many feature-providing modules	Derk-Jan Hartman, Trevor Parscal, Roan Kattouw, Nimish Gautam and Adam Miller

WikiMedia Foundation = the organization which runs various projects including Wikipedia.org

Constructive Cost Model is a procedural software cost estimation model developed in the early 80's and then updated around the year 2000.

Cascading Style Sheets = A technology that deals with the presentation of content on the web

HyperText Markup Language = structured text that uses logical links (hyperlinks) between nodes containing text.

Uniform Resource Locator = an address of a web page or other component, including the protocol.

Application Programming Interface

Asynchronous JavaScript and XML = A means to exchange data with a server without loading a whole new page.

JavaScript = A computer language.

PHP is the HyperText Preprocessor = the most popular programming language for the web