If an invalid title is entered into MediaWiki:Scribunto-doc-page-name,
it could cause "attempt to call function on a non-object" fatal errors
all over the place. Let's avoid that.
Bug: 52404
Change-Id: Id5c6e7cd01b13547095553358310605dd02e90aa
If someone puts something broken in MediaWiki:Scribunto-doc-page-name,
it may not be possible to determine which module the page is a doc page
for. In that case, just pretend it's not a doc page.
Bug: 49322
Change-Id: Ia4421576b372e188cf7e3dfe2c0b8ce213d026d4
We had intended to use the constant CONTENT_FORMAT_TEXT, but
accidentally used that as a string instead.
Change-Id: I93a2c02d48d3fd7b73530562165d817965e272d1
Use the SoftwareInfo hook to add the versions of LuaSandbox and Lua to
Special:Version.
Bug: 39655
Change-Id: I912197efee0211066677c4d46e638fb546a410c6
This exists for some common text-processing functions that aren't
included in string (and therefore also aren't in mw.ustring), as well as
a logical place for the "unstrip" function requested in bug 45085.
Bug: 45085
Change-Id: I47356215fcc8ddeed5f901cd933a30021394bd78
On my test system, ScriuntoHooks::invokeHook takes about 4 seconds of
CPU time during the parse of a page containing 1000 #invokes of a module
containing a single do-nothing function. And about 2.3 of those seconds
appear to be spent in ScribuntoEngineBase::fetchModuleFromParser.
ScribuntoEngineBase::fetchModuleFromParser already assumes that if
Parser::fetchTemplateAndTitle returns the same $finalTitle then $text is
also the same and we can reuse the same module. But it seems just as
likely that the same input $title is always going to give the same
$finalTitle, so we may as well skip calling
Parser::fetchTemplateAndTitle entirely if we've seen the input $title
before.
This change takes the CPU time spent in ScriuntoHooks::invokeHook in the
test described above down to about 1.5 seconds. And since it's very
likely that $title and $finalTitle are the same (Modules don't support
redirects, so it's basically TemplateSandbox that would cause that), it
probably doesn't even increase the size of the module cache.
Change-Id: I87ad8b85d0f82791f49158d62effa6dc7c20f058
It has been claimed that some wiki might want to place module
documentation at a location other than as a subpage of the module, for
example under "Project:Module documentation/$1". It's possible to
support this, so we may as well.
This also involves renaming the "scribunto-doc-subpage-*" messages to
"scribunto-doc-page-*", since the interpretation of
scribunto-doc-subpage-name would be drastically changed.
Note that any wiki that has customized scribunto-doc-subpage-name will
need to re-customize scribunto-doc-page-name, the old value will not be
transferred.
Bug: 45845
Change-Id: Ic453561691e04b5250d219cc7d871c17e60b9912
Note that fetching any title besides the one for the current page is
considered "expensive". It also records the title fetched in the
ParserOutput so it will be listed in pagelinks, just like #ifexists.
This also moves the ToString test formatter into TestFramework.lua, so
TitleLibraryTests.lua can use it too.
Change-Id: I799f3289a37fe1349b6bca5758829acf82cb718f
Add the ability for modules to be documented using a /doc subpage, which
is automatically transcluded onto the module page.
To get the transcluding to work right, I wound up having to change from
the deprecated-in-1.21 ArticleViewCustom hook to ContentHandler, as
there didn't seem to be any other way to get the ParserOutput into the
links tables. Which means Scribunto now needs MediaWiki 1.21 rather
than 1.20.
Change-Id: Id487097c2a505c11f92a3404f5d3ee98beb2570c
Wikidata has already requested the ability to add libraries into Lua. We
do this in a simple way: add a $wgScribuntoExtraLibraries global, and
load whatever modules someone puts there.
Change-Id: I460b4e7b968eb02dd86620f1e4b50daf1be9e901
This is a reimplementation of Lua's string library with support for
UTF-8.
The entire ustring library is implemented in pure Lua. PHP callbacks are
also available for overrides: in LuaSandbox these are used for almost
all functions, while in LuaStandalone they are used only for the pattern
matching. Also, ustring.upper and ustring.lower are overridden using
mw.language's .uc and .lc if available.
It also includes a bunch of unit tests.
Note that if you download the normalization tests, they may fail under
LuaSandbox if you have PHP's intl extension installed and libicu on your
system is too old.
Change-Id: Ie76fdf8d3a85d0a3d2a41b0d3b7afe433f247af0
If the session data gets lost, the console forgets the content and
previous commands. Detect this situation and handle it.
Change-Id: I82fb5e111c09091d4f9a87d2e1b1c245eced1420
Rework the LuaEngine tests to be entirely modular, so that every library
need not add itself to one monolithic file. This also allows other
extensions that add Lua modules to make unit tests without having to
somehow inject them into a test class owned by Scribunto.
The approach taken is similar to that used for Selenium for running
tests against multiple browsers.
Change-Id: I294b2a8195759c0e4fa211f879305a8eb66d9c9a
Adds a base class for libraries with some utility functions in PHP, and a
Lua library with utility functions for use from Lua.
Change-Id: I3d67b1de8bc50488fe3a722e4e2de5849285d127
If the parser is cloned, we need to give the new instance a new
ScribuntoEngine. Otherwise when one of the clones has ParserClearState
called, the engine for the other will also be unexpectedly destroyed.
Change-Id: Ia6ded082e5adddfbd91387bca825a305ccbf831d
Depends-On: Ieec65c908d71e89b9a66f83b9a626f842aadacbb
Add a profiler report to the limit report for pages with more than 1s
of Lua time. Uses the profiler introduced in I0b83a914 of LuaSandbox.
Also, fixed some circular references which were preventing the
LuaSandbox object from being destroyed when Scribunto::resetEngine()
was called. Otherwise a large number of interval timers could be started
due to a LuaSandbox object resource leak.
Change-Id: I5487fe2623974939d07f09f7197e86a5f297a8f1
* Added a debug console to the edit page, allowing unsaved modules to be
tested.
* Removed the "preview" button from the edit page.
* Only show the "ignore code errors" checkbox on module edit pages, not
all edit pages.
* Added Lua function mw.log() for sending messages to the debug log.
Change-Id: Ia51f439e573a1deb5b83f94ddd1a86792d5569c1
Allow users to save a module with a parse error in it, by checking an
"ignore error" box. This was a requested feature in Berlin, there was a
desire to be able to save incomplete drafts of modules. I tested the
effect of #invoking a module with a parse error in it, it shows a normal
script error.
Change-Id: If2978a226ac50150ebeb7837e8dd370a669db771
Fix for 14e8d5d: EditFilter has a $section parameter, EditFilterMerged
doesn't. So if you try to just change the hook without changing the hook
function definition, you get "expected reference, value given" for
parameter 4, which is escalated to an exception.
Change-Id: Ibedff799472285802c43feff6f3cb078e9bfb73c
* Implemented the new parser interface based on a frame object, as
described in the design document and wikitech-l.
* Added parser tests for the new interface.
* Removed {{script:}} parser function
* Allow named parameters to {{#invoke:}}
* Don't trim the return value
* If a function invoked by #invoke returns multiple values, concatenate
them into a single string.
* If there is an error during parse, show the error message as an HTML
comment as well as via JavaScript. This makes parser test construction
easier, and probably makes debugging easier also.
* Rename mw_internal to mw_php to clarify its role. It is now strictly a
private Lua -> PHP interface function table.
* Protect mw.setup() against multiple invocation.
* Fixed a bug in Scribunto_LuaStandaloneInterpreter::receiveMessage():
large packets caused fread() to return with less than the requested
amount of data, which previously caused an exception. It's necessary
to check for EOF and to repeat the read to get all data. The receive
function on the Lua side does not suffer from this problem.
* In the standalone engine, fixed a bug in the interpretation of null
return values from PHP callbacks. This should return no values to Lua.
* Updated the Lua unit tests to account for the fact that functions are
now forced to return strings.
* Updated the getfenv and setfenv tests to account for the extra stack
level introduced by mw.executeFunction().
Change-Id: If8fdecdfc91ebe7bd4b1dae8489ccbdeb6bbf5ce
* Added error backtrace collection to MWServer:handleCall()
* When there is an error on parse, show a short and simple inline error
message to the user, which when clicked, expands to a full error with
HTML-formatted backtrace.
* When an error is encountered during module validation, have the code
editor jump directly to the line. Requires r115011.
* Expose the code location of most errors to Scribunto, by parsing the
standard error message format.
* During module validation, abbreviate the error location if the error
is in the same module.
* Do not execute the module during validation, just parse it. Execution
does not really work without an active parse operation in progress.
It already caused a fatal error if you called require() from the main
chunk, and problems would have become more visible as more
parser-related APIs were added.
* LuaSandbox does not yet provide backtraces, but this is planned.
Change-Id: Id9f6564a41b310792b3fe3ebb527cbf8f8771bd1
* Added tests for the engine classes.
* Added some tests that run under Lua.
* In the chunk names, fixed truncation of module names at 60 bytes
by using an "=" prefix instead of @.
* Fixed a bug in mw.clone() which was causing the metatable to be set on
the source table instead of the destination.
* Put restricted setfenv/getfenv in the cloned environment rather than
the base environment, they work better that way.
* In setfenv(), check for getfenv() == nil, since that's what our own
restricted getfenv returns.
* Fixed getfenv() handling of numeric arguments: add one where
appropriate.
Change-Id: I2b356fd65a3fcb348c4e99a3a4267408fb995739
Package library:
* Added a simulation of the Lua 5.1 package library.
* Removed mw.import(), replaced it with a package loader. Packages can be
retrieved from the wiki, using require('Module:Foo'), or from files
distributed with Scribunto, using require('foo'). The "Module:" prefix allows
for source compatibility with existing Lua code.
* Added a couple of libraries from LuaForge: luabit and stringtools.
* Made fetchModuleFromParser() return null on error instead of throwing an
exception, to more easily support the desired behaviour of the package loader,
which needs to return null on error.
* Renamed mw.setupEnvironment() to mw.setup() since it is setting up things
other than the environment now.
* In MWServer:handleRegisterLibrary(), remove the feature which interprets dots
in library names, since LuaSandbox doesn't support this.
Improved module isolation and related refactoring:
* Expose restricted versions of getfenv() and setfenv() to user Lua code.
Requires luasandbox r114952.
* Don't cache the export list returned by module execution for later function
calls. This breaks isolation of #invoke calls, since the local variables are
persistent.
* Removed ScribuntoFunctionBase and its children, since it doesn't really have
a purpose if it can't cache anything. Instead, invoke functions using a module
method called invoke().
* Removed Module::initialize(), replaced it with a validate() function. This is
a more elegant interface and works better with the new module caching scheme.
* Use a Status object for the return value of Engine::validate() instead of an
array. Use the formatting facilities of the Status class.
Other:
* Removed "too many returns" error, doesn't fit in with Lua conventions.
* Use the standalone engine by default, so that the extension will work without
configuration for more people.
* Added an accessor for $engine->interpreter
* Fix mw.clone() to correctly clone metatables
* If the standalone interpreter exits due to an error, there are some contexts
where the initial error will be caught and ignored, and the user will see the
error from checkValid() instead. In this case, rethrow the original error for
a more informative message.
* Load mw.lua into the initial standalone environment, to reduce code
duplication between mw.lua and MWServer.lua.
* Fixed a bug in Scribunto_LuaStandaloneInterpreter::handleCall() for functions
that return no results.
* Fixed a bug in encodeLuaVar() for strings with "\r". Added test case.
* In MWServer.lua, don't call error() for internal errors, instead just print
the error and exit. This avoids a protocol violation when an error is
encountered from within handleCall().
* Added lots of documentation. Lua doc comments are in LuaDoc format.
Change-Id: Ie2fd572c362bedf02f45d3fa5352a5280e034740
* Added unit tests for the two Lua interpreter classes
* Fixed a bug in checkType()
* Have Scribunto_LuaSandboxInterpreter throw an exception on construct
when the extension doesn't exist, to match the standalone behaviour.
* In Scribunto_LuaSandboxInterpreter, removed debugging statements
accidentally left in.
* Convert LuaSandboxTimeoutError to the appropriate common error
message.
* Moved the option munging from the sandbox engine to the interpreter,
so that the interpreter can be unit tested separately.
* Use /bin/sh instead of bash for lua_ulimit.sh, since dash is smaller
and still supports ulimit.
* Use exec to run the lua binary, so that the vsize of the shell doesn't
add to the memory limit.
* Added a quit function to the standalone interpreter. Unused at present.
* Don't add a comma after the last element of a table in a Lua
expression.
* Make the SIGXCPU detection work: proc_open() runs the command via a
shell, which reports signals in the child via the exit status, so
proc_get_status() will never return a valid termsig element.
* In MWServer:call(), fixed a bug causing the return values to be
wrapped in an array.
* Fixed a misunderstanding of what select() does.
* In MWServer:getStatus(), fixed indexes so that vsize will be correct.
Removed RSS, since it wasn't used anyway and turns out to be measured
in multiples of the page size, and I couldn't be bothered trying to
fetch that from getconf. Return the PID and vsize as numbers rather
than strings.
* Added a simple table dump feature to MWServer:debug().
* Fixed brackets in MWServer:tostring().
* Added missing Linux 32-bit binary.
Change-Id: Ibf5f4656b1c0a9f81287d363184c3fe9d2abdafd
* Introduced a Lua implementation based on shelling out to a standard Lua binary.
* Bundled several Lua binaries for common platforms. I haven't added a 32-bit Linux binary yet, but that will come.
* Refactored the existing Lua class, bringing out functionality common to all Lua implementations into a set of common base classes.
* Moved the bulk of the implementation-specific functionality into a set of "interpreter" classes.
* Renamed LuaSandboxEngine to Scribunto_LuaSandboxEngine
* Don't create an engine object unconditionally when the ParserLimitReport hook is called.
* Implemented isolation of module global variable namespaces. This means that separate {{#invoke}} calls can't pass data to each other -- this was a desired feature in planning since it allows more flexibility in wikitext parser design. Isolation for mw.import() means that modules cannot accidentally create global variables which affect other modules -- exports are solely via the return value.
Change-Id: I3fa35651fe5b1fbfd85adeadc220b1ea31cd6f0b
* Used Parser::fetchTemplateAndTitle() to get modules and register them in templatelinks. Most of the logic was previously duplicated.
* Changed the configuration and factory functions to allow for the possibility of multiple engines coexisting on the one wiki.
* Made the $parser parameter optional, to improve debugging in the case where a parser is needed but parsing has not started. Removed all $wgParser references.
* Renamed Scripting::getEngine() to getParserEngine() and resetEngine() to resetParserEngine()
* Removed setOptions() and updateOptions(). If you want to change the options, you can always make a new instance.
* Renamed getModule() to fetchModuleFromParser()
* Simplified module constructor parameters and member variable list
* Fixed spelling error langauge -> language
* Renamed a few variables for clarity: $module -> $moduleName, $function -> $functionName
* Renamed getLimitsReport() to getLimitReport() as it is in Parser
* Use an accessor for getting LuaSandboxEngineModule::$contents
* Renamed configuration variable maxCPU to cpuLimit
* Include the full message name as a parameter to ScriptingException. This makes it easier to find messages in the i18n file, and it makes it easier to find invocation points when a translator wants to know how a message is used. Adding the message name as a comment on the same line seems like a waste of space when you can just make it an actual parameter.
* Reduce the number of formal parameters to ScriptingException::__construct(), since there is already too many and we may want to add more things later, such as backtraces with hyperlinks and other such stuff.
* Include the code location as $2 unconditionally so that there is less chance of getting the parameters wrong
* Shortened some message names. Wrote English text for messages without it.
* Removed ScriptingEngineBase::load(), inappropriate interface specification, only used by child classes and more properly defined by them
* Fixed inappropriate use of final
* Fixed case of a class constant to conform with MediaWiki conventions
* Use a factory function interface for module creation instead of a class name accessor
* Don't pass unnecessary $engine parameter to ScriptingFunctionBase::__construct(). Pass parent object as the first parameter per convention.
* Fixed unnecessary reference parameter in doRunHook()
* Have LuaSandboxEngineFunction::call() return the first result or null, per the base class documentation, instead of imploding.
* Use strval() to avoid a warning in case call() returns an array or object
* Improved some comments
