This method actually consists of two: add derived vars, and initialize
content vars. The former part depends on no parameters of this method.
On the other hand, the latter part combines multiple implementations
for some of the content variables using branching.
The branching is a dirty workaround and inferior to the GRASP principle:
"When related alternatives or behaviors vary by type, assign
responsibility for the behavior to the types for which the behavior
varies."
In other words, the callers (extensions) should be responsible for
choosing the initialization strategy themselves, instead of letting
VariableGenerator figure it out.
As the first step, split the former part to a separate method.
For now, it will be implicitly called by ::addEditVars.
Change-Id: I5ff00dbdbf29ec54eabfd95c44a4fd7f713969f5
Service wiring should only depend on config, not on request state.
Creating a session object during service wiring causes issues with entry
points such as opensearch_desc.php that disable the session.
Bug: T340113
Change-Id: I2450b0b6821ff0b097e283ff660a0b8aeea9590a
For example:
* Use the more meaningful str_contains().
* Add missing type hints.
* Make use of early returns/guard clauses.
Change-Id: Id150d1b17a80ea637a0639a8f2fd7fd017ad23b1
Protected effectively means "public to subclasses" and should be
avoided for the same reasons as marking everything as public should
be avoided.
Change-Id: Iba674b486ce53fd1f94f70163d47824e969abb77
This was an unfortunate mistake in the refactoring in I2ccb587,
caused by incomplete documentation and a confusing mixture of
possible return types.
I9166c2b fixed one of the two places already. The situation in this
patch here cannot really happen in reality (there is nothing to
remove when the page is empty). Still I think the code is easier to
read when the two places behave the same.
Change-Id: Iea51c3a7a8185cbc3771143353f4795dde712ec4
It should fail on null but it should create the page if it doesn't
exist or doesn't have any content yet.
This is breaking the special page, see:
[[de:234828092#New_special_page_to_fight_spam_//_Neue_Spezialseite_zur_Spam-Bekämpfung]]
Change-Id: I9166c2bdcfacb4b19706d246fbf99b2f24ca4cc6
Unlike what the 20-year old source comments in UrlUtils.php would
have you believe, parse_url() works fine nowadays, including for
protocol-relative URLs and indeed lots of prod code uses it directly.
The class still has some convenience value for case where you need to
expand or manipulate URLs, but for the common case of extracting a part
of it, you really don't need it.
Test plan:
$ php phpunit.php ../../extensions/AbuseFilter/tests/phpunit/integration/FilteredActionsHandlerTest.php
Bug: T337431
Change-Id: I1e76d2f5aef65365743214530faba656325b965a
* Remove stray `@ingroup` from file blocks, move to class block.
* Fix mention of "WAN" cache where actually APCU is used.
* Document that the storage class takes a local-server cache.
This is an important requirement since the class has no
coordination for purging or other invalidation. It expects
an uncoordinated cache.
* Rename "load" to "loadConfig" as it's ambigious what it means among
the half dozen other "load*" methods in this class. Also inline
loadFromConfig and loadComputedUncached while at it to further
reduce this.
* Rename "loadConfigContent" to "fetchLatestConfig" to match
the existing fetchConfig, which does the same thing except it queries
the primary db using READ_LATEST.
* Use Html.php when building HTML, instead of legacy Xml.php.
While at it, also switch a few to Html::element instead of
Html::rawElement (aka Xml::tags) by using Message->text() for
messages that are not expected to contain rich wikitext.
Change-Id: Ic74d1597aa9201b371894e7a4bf9361752d9db21
Doing unset on array leads to the final array turning into associative array
and gets blocked by the validator.
You can check that it's broken in Persian Wikipedia, beta cluster or
localhost. Tested locally, fixes the issue.
Bug: T337431
Change-Id: Ib1be294bae1ae057dfb9a4445a8e13ac72b333b9
This is basically copy paste of SpamBlacklist logging with the added
extra bit of what triggered the hit.
Bug: T337431
Change-Id: Ieb9e3ca615af88ab56735b56e24c80c42a68d478
And register AbuseFilterRunnerFactory as a service name that’s allowed
to not have a getRunnerFactory() method without the test complaining
(the service was renamed, getFilterRunnerFactory() exists).
Change-Id: Idedb87e64a6df02b0edae8d9e7dbf441752dc480
Needed-By: If5af88e7f70b83d53f66b9617a5ef37daf81830f
Abuse filter needs to check both if the update is available and if the
page is rendered. This is the exact issue FlaggedRevs have:
050b9593fb/backend/FlaggedRevs.php (L718)
Bug: T339094
Change-Id: I943c8dbb525dc4c988e97e180474ea71b4cf731d
When forFilter is true and PreparedUpdate is available
(most save operations), retrieve all_links from
PreparedUpdate::getParserOutputForMetaData. Otherwise
do what was done before.
Note that this change probably leaves some dead code. It will be dealt
with later.
NOTE: this changes code potentially executed on every save operation.
Bug: T65632
Bug: T264104
Change-Id: I3628a56e5277846c1b90444fb55983870eb54c1e
The method for old_links retrieval depends on the "forFilter"
value, which we know in advance. If it's true, old_links should
be retrieved from the database. Make a case in the switch
that does nothing but retrieves links from the database,
and direct the evaluation to it.
This change was split from I3628a56e5 to make its review easier.
NOTE: this changes code potentially executed on every save operation.
Change-Id: I33b688f6be3c58beec403f7bf26407a42e7c18ab
Regarding array building: Instead of adding to array with
$array[] = 'foo' and then doing array_flip(), simply do
$array['foo'] = true;
Regarding tests: I originally wanted to create a unit test but I ended
up mocking so many things that it wasn't worth it and the config variable
is globaly which first we need to clean up after deployment is done.
Bug: T337431
Change-Id: Iac8dca7078668ee3441d19b6aafe499c1aa0d732
This is a direct follow up for I6373fa6 where we apparently fixed
half of the cases while breaking the other half. There was actualy
a code path that can return null, and anther one that can return a
status object.
Since there is never anything done with the status object we can as
well get rid of it and always return null in case of an error.
Bug: T337431
Bug: T279275
Change-Id: I2ccb58756182897bcd6649c9f589e2f7a0321b20
We will have a pretty large list of blocked domains that we need to
swift through in each edit for any added domain. In order to cacth
subdomains being added, we have to do all sorts of complicated
operations and string search in large set of strings which is quite
slow. To fix that, let's simply pretend a user who has added
foo.bar.com, also added bar.com and com and do exact match in array of
strings making it much faster.
h/t Krinkle for the idea
Bug: T337431
Change-Id: I96795ed7d1a25f051db0b591dde21b032b138ded
For now, we will revisit this in the future. Specially if the
communities think otherwise.
Bug: T337431
Change-Id: I2847264eba9a3cc4fc47a22eacb523199015f9e7
This makes raw page editing safer, and potentially enables opening up
access to less restricted user groups.
Bug: T337431
Change-Id: I14f21003a551f34b6e524e9b229613e79b0e5a70
Treat temporary users the same as IP users. Neither has user groups,
so return early for both.
Bug: T335062
Change-Id: I20b48608cf6ba5f8e8e36a378d66c603d84b032f
It is behind a feature flag. Improvements on it can happen in follow
ups. The patch is already quite massive.
Bug: T337431
Bug: T279275
Change-Id: I3df949c4d41ce65bb4afa013da9c691ac05fc760
* Set the same block expiry for temp and anon users
* Don't block autopromote for temp users; they can't be autopromoted
* Bail early from CheckUserHandler if the user is temporary
Bug: T335062
Change-Id: I6b72537f568c4c70a0b86f1825ea30b767f5634a
This patch migrates abuse_filter and abuse_filter_history tables
to new actor schema.
MigrateActorsAF was copy-pasted from core's
maintenance/includes/MigrateActors.php before removal (ba3155214).
Bug: T188180
Change-Id: Ic755526d5f989c4a66b1d37527cda235f61cb437
Looks like it's needed for the UpdateVarDumps script, so add a note
about that. Also add a type check to the script so that it produces a
clearer error message if it finds an entity with unexpected type.
Bug: T331861
Change-Id: I68f8f954ed754c4282e13599ce06118e2336ecbb
Use the very new getPrimaryDatabase and getReplicaDatabase.
We skip FilterLookup and CentralDBManager in this patch.
Change-Id: I22c6f8fa60be90599ee177a4ac4a97e1547f79be
Increase default widths from `65%` to `90%` for the editor, notes,
description, group inputs.
Add `mw-abusefilter-edit-description-input` id to
`abusefilter-edit-description` TextInputWidget.
Bug: T294856
Change-Id: Ia9472298170740a39fd24864003b766078fcdfaf
Hook on to CheckUserInsertPrivateEventRow and CheckUserInsertLogEventRow
to override the IP, XFF and User-Agent string when the user is the
abuse filter user for log events.
These two hooks are being added as log entries are being removed from
cu_changes and added into two new tables. Because the columns and their
names are different for these tables, reusing the same hook won't work
for callers that rely on setting values for a specific column name.
Edits and log entries performed by the abuse filter user need to be
marked as being by the software (and not using the IP, XFF and
User-Agent provided in the main request).
These hooks will not be run until the appropriate config is set to
write to the two new tables. Until that point using the one currently
defined hook will work for all actions.
Bug: T324907
Bug: T44345
Depends-On: I7c7754323ade9a8d96273c1742f30b1b5fbe5828
Follow-Up: Idd77545af94f9f9930d9ff38ab6423a72e680df9
Change-Id: Id78417e9d95220946f110afbe1430df5b3bb4f4f
Add RecentChange as a optional parameter to the code that hooks
on CheckUserInsertChangesRow as this hook will soon provide a
RecentChange object if this row was triggered by a RecentChange.
If this row was not triggered by a RecentChange, then this
parameter will be null. This needs to be added before the parameter
is added to the definition of the hook in the CheckUser extension
as the tests will fail if all usages do not already have the new
parameter.
Bug: T324907
Change-Id: I44e54a3fca5558a1cb8d8f06a3990ded863454bc
We might consider adding an in-process cache because there
will be a duplicate database lookup for content model and
wikitext of the same revision.
Bug: T230295
Change-Id: I9723f21069e03a49fa7131bd8f79c6e7e442104b
The motivation is to have a single immutable object providing
information about the action. It can represent the current
action being filtered, but also a past action stored in the
abuse log. It will hopefully help us get rid of passing
User(Identity) and Title/LinkTarget objects around together.
Change-Id: I52fa3a7ea14c98d33607d4260acfed3d3ba60f65
Each generator knows in which situation it is executed, and it
can pass this information to the computer. VariableHolder should
just hold the variables.
Change-Id: I0fb2e01e3e9457cd63948afe2a20439a1c800790
For fixing bugs like T65632, T105325, or T264104, we will need
to update code in more than one place at once. To prevent
regressions, create an integration test which tests the whole
pipeline, from the request submission to variable evaluation.
Edits are simulated using action=edit API call because the hook
AbuseFilter uses is run from EditPage.
To increase confidence in test coverage, remove some annotations
from AbuseFilterConsequencesTest or make them less greedy.
Ideally, it would only test consequences.
This patch includes refactoring of AbuseFilterCreateAccountTestTrait
which now only inserts the user into the database if it really
should be created.
It also restores test coverage of some other classes.
Change-Id: I661f4e0e2bcac4770e499708fca4e4e153f31fed
Core now supports special pages registering sub menus
natively in skins. The menu is rendered when the skin
supports it, so at current time of writing this will
only work in Vector 2022 and MinervaNeue.
The existing menu that appears under the abuse filter
page title is converted into the new format. For other skins
no difference.
Bug: T315553
Change-Id: Ief51a9c60125c11e3b735fabee2a4544b7955f64
Change the IP to 127.0.0.1 (to indicate an internal IP), and blank
the XFF and UA when the performer of an action being logged by
CheckUser is the abuse filter user. Actions performed by the abuse
filter user can only be initated by the software, and as such should
not use the request's IP, XFF and UA. Also test the newly added
code.
Bug: T44345
Depends-On: I28acaaebd2d0067b700da0930e7b7ba924fa5c1c
Change-Id: Idd77545af94f9f9930d9ff38ab6423a72e680df9
$wgAbuseFilterAnonBlockDuration is documented to be deprecated and
fall back to $wgAbuseFilterBlockDuration. This was just missing here.
This makes code fail in PHP 8.x where null is not allowed any more in
functions that expect a string.
Change-Id: I0edb0f14630aed88635aa564a11d6f42e470c29f
PHP does this automatically, however in PHP8 this causes an
E_DEPRECATED warning.
This fixes a phpunit test
Change-Id: Ie2b2dbf4a1c0ff500ba251ee43a37823432e3047
Follows-up Iaa1b4683c5c856.
* Match $IP pattern verbatim from most other WMF extensions.
* Improve descriptions a bit, and move/merge any meaningful
information from file docblock into class docblock. The file blocks
are visually ignored and identical in each file, and often out of
date or duplicated when given text separately from the class block.
See also similar changes in core:
https://gerrit.wikimedia.org/r/q/message:ingroup+owner:Krinkle
* Use `@internal` instead of `@private` as per Stable interface
policy.
Change-Id: I8bed9a625af003446c7e25f6b794931164767b5a
A protocol-relative URL has two entries for el_to in externallinks table,
the different is on the el_index colum
Bug: T314373
Change-Id: I3d6229aaa10a089baf15d5ba3407f6a8870429e3
In theory, it's possible that some consequences could use "0"
as one of their parameters. At least change tags, see T296642.
But PHP treats "0" as false.
Also make the code on all places consistent.
Change-Id: I5255dfb26878ceb4f78c4d8277521edbb4821d7d
We mask the IP address on purpose, so that it is not
leaked to the abuse log. This breaks CheckUser because
it attempts to assign an actor id to the "fake"
(uncreated) user account. So unmask the IP address
when we send the data to CheckUser.
Bug: T233004
Change-Id: Ib58193927bc8254d36a8de0fd1b5f9fba68a0cb0
A unique column is needed in the order to ensure the next offset is
correct and does not skip items
As mention in the doc for IndexPager::getExtraSortFields the extra
columns are not for pagination, only to help the optimizer building a
better query plan by mention denormalized columns.
Bug: T191694
Change-Id: I9fb9f848a0b165dbaa0a2b31d9504324f43578de
Combine the check for red/blue user/talk links into one database query
This can improve the performance of the page view when many filters
from many different users are linked
Change-Id: I0b87ee15ecee4cecd5d5d6164e8c18e1b788ecd1
They are unused in Wikimedia code (finally).
Change-Id: I74c81d950d992552d3edf184b5eecc46e5e2c567
Depends-On: I62533e21d2bc1a22c3fcba4c7c650ca9d95700ef
Depends-On: I95ce9897d89213e358c436135278b729f0adc3a2
Add a space between the checkbox (shown for users who can hide abuse
filter entries) and the timestamp so that it looks nicer.
Change-Id: I6e495f8cb56ad8f0b53f06d2aecb8ac34b16ff25
A new core facility written for this use case.
Bug: T310662
Depends-On: I26b1cdba0a06ad16ad8bb71b455e1b6180924d17
Change-Id: I2b902d034a8c3308c0ba9878b69e873ca8fbda52
Add the ListToggle provided in core's ListToggle.php to
Special:AbuseLog when a list of abuse filter entries are being
shown and the user can hide abuse filter entries. This will allow
them to select multiple checkboxes to hide at once (without having
to shift and selecting the first and last).
Bug: T311954
Change-Id: I1aa4fa3fa7016a5d9ae4a904c151011743d2c8ed
Move most stuff from the pager to the view class to untangle
circular dependency. Declare class properties as private.
Leave input validation to the form.
Change-Id: Ia8b1a9d08af9c0cac23b34f6bbbe2c44d01f6c8c
In action=abusefilterunblockautopromote, leave UserIdentity
instantiation to the parent. Note that this changes the "code"
in the response from "baduser_user" to "baduser".
Change-Id: I97d2bf3fa3c5486e461823f840cad2763e1bcfea
Almost all callers already provide an Authority in the form
of a User object, so mostly just need to change the typehints
Depends-On: I58661943c7e1acb6ff09798ee1a30be0fde3f459
Change-Id: I2ad86859c8194c14d7331f58db62b7cff4698085
Prevent invalid assignments to properties. On
Special:AbuseFilter/test/123, handle when id of
a non-existing filter was provided. Allow '0'
as user and title on Special:AbuseLog and
Special:AbuseFilter/test.
Change-Id: I196ae62b165d1a60babaf4fe6bd733aa52be1726
These are apparently the only two variables for which we can
quickly determine their value in such simple way.
Later, we can also try it for recent contributions.
Bug: T102944
Change-Id: Iecfa9e5c5ba8c078691334b676cc6f289790cb74
This was most definitely my intention when I introduced the concept of
"generic vars", so it's a bit surprising to discover, 3.5 years later,
that the timestamp isn't computed there.
Also make the timestamp always be a string for consistency, since that's
the type documented on mw.org. I've manually checked all filters on
Wikimedia wikis using the timestamp variable, and added explicit int
casts where needed (although I think they'd still work due to implicit
casts).
Change-Id: Ib6e15225dd95c2eead7e48c200d203d6918e0c18
The "substr( $line, 0, 1 )" expression has already assumed
the prefix has length 1. Therefore, it's pointless
to compute its length later. The assumption does hold,
the only two prefixes the code works with are '+' and '-'.
Not changing the check to use str_starts_with now, because
it was suggested in I113a8d052b6845852c15969a2f0e6fbbe3e9f8d9
that this shouldn't be done for performance-sensitive code
at least until we are on PHP 8.
Change-Id: I00cb2fc50ed534bb2bbef3ee1e5f6f466afeeb27
We want to make sure that all parameters are valid regardless of whether
there's a match.
Also make the minimum number of parameters = 2, so it's easier to switch
between this function and ip_in_range.
Change-Id: I141558a7ef4533485e315b3d93ea9b64f0959db7
Added support for ip_in_ranges which allow multiple ranges to be
checked at the same time. If the IP is in any of the ranges, the
function returns true.
Bug: T305017
Change-Id: Ic75c87ecd4cacf47ce2ff1b04173405230ff81d0
Clean up the existing code a bit before refactoring to be reusable
for a diff button in the edit form.
Includes:
* use the Html class rather than the Xml class for building the display html, and avoid manual
html strings
* replace formatVersionLink() with getVersionHeading() to reduce duplication in the handling of
the headings for the old and new versions, and in the process fix the name used as a parameter to
the old version heading (should be the old version editor, not the new version editor)
* rename some parameters for clarity
* organization and other cleanup
Bug: T180954
Change-Id: I1c02f407e72789a871a23b0d4a279a5c341b1e93
Before the information if a filter was new was stored in 2 places:
In the bool $isNew and in the two variables $filter and $newID.
$newID was especially confusing because it was used for both old and
new ids.
Change-Id: I15bdf36c96c8d86a37f305aab2647f7d57bc2bf1
- Define it with the extension.json key, instead of using the
registration callback
- Inject the services it needs
- Replace direct User instantiation with UserFactory
- Move log subtypes to extension.json as well
Change-Id: I86a761c7fa844b1f417b974798373622a15f6411
The check was not consistent and the code could still crash
when $oldContent was null. RevisionRecord:getContent only
returns null when audience check fails, but we don't ask
for that.
Change-Id: Id64646a6762167f552e104f623130bedc6b2dd18
The getLocalURL() method can return url with query string when
wgArticlePath is configured to do so, and query string of GET form
would be ignored by browsers.
The setAction() method is problematic (T285464 and above) and hard to
warn the wrong usage. I'm going to go through and fix every use case,
and finally deprecate it.
Change-Id: I66b634f0cc996be3d7048d410b46fe77c88f9879
This is a breaking change for the API: 'hidden' is now either true or
false, depending on afl_deleted. 'implicit' is no longer a possible
value, the caller should compute it instead if necessary.
Then simplify the remaining usage of isHidden, using a temporary private
method.
Bug: T291718
Change-Id: I97b5195d306c35ddca3f071d9ff4d896f9fd5c8d
Use setTitle() instead of setAction(), T285464.
HTMLForm would set edit token for post form, use setTokenSalt() to amend.
HTMLForm would fetch user input value from the request itself, since
the two form shared the same field name, the 'default' params assigned
are unfunctional.
HTMLForm would prefix descriptor keys with 'wp' as the default name
of generated input fields, make use of this feature.
Bug: T285464
Change-Id: I2cc3c1d042998b65df5ee51f0715fe25a5e18e72
Introduce shorter methods, one for each steps, so that it's easier to
understand what the code is doing and figure out if the order makes
sense. The ConsequencesExecutor test is now a proper unit test. Also
simplify AbuseFilterConsequencesTest, removing old/wrong logic and
fixing two expected values that were actually wrong (but worked because
of the aforementioned wrong logic).
The only functional changes should be:
- We pick the longest block *after* checking the ConsequenceDisabler
consequences, so e.g. if a filter has a long block + warn and another
filter has a shorter block, we still keep the second one if warn will
disable the block.
- Remove disallow in presence of dangerous actions after checking
ConsequenceDisabler's and deduplicating blocks. Otherwise we may
remove disallow for filters where block (etc.) doesn't end up being
disabled. We may also want to consider not removing disallow at all,
now that messages are customizable.
Bug: T303059
Change-Id: If00adbf2056758222eaaea70b16d3b4f89502c20
This was likely a rebase artefact or something: the 'implode' was meant
to be called with two parameters as usual. Currently, the parameters are
simply concatenated which makes the logs quite hard to read.
Change-Id: I84f9a7cb05e210f60a791d513dfb5b74fa7dfb8a
- Use a /64 range for IPv6 instead of /16.
- Fix a curious and serious bug for IPv6, where grouping by range
would only use the first (!) number of the IP address, due to the
'v6-' prefix returned by IP::toHex.
- Fail hard if the identifier is unknown -- it's not something that's
supposed to happen.
- Include the type name in each identifier, instead of prefixing all
type names to all identifiers. This makes it easier to understand the
parts of the key.
- Test the whole lot.
Bug: T211101
Change-Id: I54c4209f2f0d5a4c5e7b81bed240ca3e28a2ded7
List which actions were disabled, or explicitly say that no actions were
disabled if that's the case. Also avoid the word "throttle" in messages
as it may be hard to translate. Also don't suggest optimizations to the
filter conditions -- unoptimized rules have nothing to do with a filter
being throttled.
Bug: T200036
Change-Id: Id989fb185453d068b7685241ee49189a2df67b5f
This is a plain value object that represents the action being filtered,
replacing associative arrays that were being used up to this point.
We should now check whether it's possible to make it not require an
accountname (which complicates things), and then use it in related
classes as well, e.g. Parameters.
Change-Id: I9550c14819b600c97c46b632cc1c2d447972d69c
The existing filters on WMF wikis has been changes such that calls
to rmspecials() are now rmspecials(rmwhitespace()) to ensure no change
is made in behaviour. Filter admins can change this back if filter is
not meant to trigger when part of the input is contains spaces.
Bug: T263024
Change-Id: Idde09b50fb8eda357afbedc1199a5483fa8217c1
Replaced with the more readable ::disableClientCache() method, added
in 1.38. Minimum MW version bumped to match.
Depends-On: I7c89e20528a0d91173f0edcb997dcae631935ee5
Change-Id: I91d0b8e8f69a2d309b6fc61e13bfb5d86dc0218d
old_links and all_links are an array. Casting
them to string and then splitting by newlines
is a no-op.
Change-Id: I05c69f14e981ac2842032e7db888f4841d6b48b7
We should avoid using ObjectCache directly and use services instead. On
top of that, db-replicated writes to objectcache table that should be
avoided and it's now blocking schema changes.
This should go to MainStash.
Bug: T272512
Change-Id: I9c76399ec4c0ea6644f9ca1b4536428052e5ac38
These are not necessarily old links, the new links
can also be retrieved using this code path.
Also print debug messages before the code execution.
Change-Id: I1a85bb7b5a2af4fe514625d2236cf92f15daf304
The special page itself is a MessageLocalizer
SpecialPage::getContext on constructor results in global state
Change-Id: I6a3dd263dbe02111aea65a087ce69a5a191f63fc
The report is now generated in ParserOutput, not Parser, meaning we can
simply avoid passing the `enableLimitReport` option (off by default) if
we don't want the report to be there.
Depends-On: I154c0a77a5b0287b5572614d56339fb57ac56c33
Change-Id: I8cdab35c475f10433234ddb55b5e6a0cc8109498
Note that this doesn't have to be applied in WMF prod, since the indexes
are already correct there.
Bug: T291725
Change-Id: I7fcee0581f469e0d7ada43d1f30f31061c5bf5c0
This does the same as before, replacing \r\n as well as \r with \n.
Additionally the new method applies an rtrim() on both strings. I
believe this is even a good thing. It possibly removes irrelevant
noise from the diff.
Change-Id: I584740a24e6b25bbcbc928c2369f09b785a485c8
On second thought, no need to keep the migration script now, since it's
unusable anyway.
Also remove an usage in SpecialAbuseLog, likely a rebase artefact.
Change-Id: I938924b3617ef30046d8317e68a101ed2c1883d3
This replaces the previous pattern of callers having to use
RevisionLookup if the result was 'implicit'. Also, in some cases where
we were just hiding things if the visibility was !== true, properly
handle the implicit case by using the new method. Make the new method
return string constants rather than bool|string.
The new method also fixes some potential info leaks which happened when
the row was hidden, the user could view suppressed AbuseLog entries, but
the associated revision was also deleted and the user couldn't see it
(this shouldn't be relevant for WMF wikis since AF deletion is
oversight-level).
Also add a bunch of tests for the various cases to ensure we don't
regress again.
Bug: T261532
Change-Id: I929f865acf5d207b739cb3af043f70cb59243ee0
ParserStatus is now more lightweight, and doesn't know about "result"
and "from cache". Instead, it has an isValid() method which is merely a
shorthand for checking whether getException() is null.
Introduce a child class, RuleCheckerStatus, which knows about result and
cache and can be (un)serialized.
This removes the ambiguity of the $result field, and helps the
transition to a new RuleChecker class.
Change-Id: I0dac7ab4febbfdabe72596631db630411d967ab5
Something somewhere is leaving error_reporting in a dirty state
causing AbuseFilter's ConsequencesExecutorTest case to fail for
the core change Ic9fee6cdd88001025.
Per T253461, we're meant to eventually remove this anyway, so might
as well remove it in areas that are known to get it wrong somehow.
Change-Id: I2a665f09a357f2f2cc258d8c4011d49a7ab9c13b
The old parser now has the correct name "Evaluator", so the
ParserFactory name was outdated. Additionally, the plan is to create a
new RuleChecker class, acting as a facade for the different
parsing-related stages (lexer, parser, evaluator, etc.), which is what
most if not all callers should use. The RuleCheckerFactory still returns
a FilterEvaluator for now.
Also, "Parser" is a specific term defining *how* things happen
internally, whereas "RuleChecker" describes *what* callers should expect
from the new class.
Change-Id: I25b47a162d933c1e385175aae715ca38872b1442
Remove unnecessary setters, injecting everything in the constructor.
These were leftovers from before the introduction of ParserFactory.
Remove public access to the conds used, include the information inside
the returned ParserStatus instead, and consequently simplify callers.
Change-Id: I0a30e044877c6c858af3ff73f819d5ec7c4cc769
So that the method can be typehinted in core.
Also add phan-var to fix broken master build due to typehint additions
in core.
Change-Id: I4a072e00ffeeb437753fc3d3c1f15de9929df510
This commit adds a class AFPSyntaxChecker which can statically analyze
a filter code to detect the following errors:
- unbound variables (which comes in two modes: conservative and liberal,
default to conservative)
- unused variables (disabled by default for compatibilty)
- assignment on built-in identifiers
- function application's arity mismatch
- function application's invalid function name
- non-string literal in the first argument of set / set_var
The existing parser and evaluator are modified as follows:
- The new (caching) evaluator no longer needs to perform variable
hoisting at runtime.
- Note that for array assignment, this changes the semantics.
- The new parser is more lenient, reducing parsing errors.
The static analyzer will catch these errors instead, allowing us
to give a much better error message and reduces the complexity of
the parser.
* The parser now allows function name to be any identifier.
* The parser now allows arity mismatch to occur.
* The parser now allows the first argument of set to be any expression.
Concretely, obvious changes that users will see are:
1. a := [1]; false & (a[] := 2); a[0] === 1
would evaluate to true, while it used to evaluate to the undefined value
due to hoisting
2. f(1)
will now error with 'f is not a valid function' as opposed to
'Unexpected "T_BRACE"'
3. length
will now error with 'Illegal use of built-in identifier "length"'
as opposed to 'Expected a ('
Appendix: conservative and liberal mode
The conservative mode is completely compatible with the current evaluator.
That is,
false & (a := 1); a
will not deem `a` as unbound, though this is actually undesirable because
`a` would then be bound to the troublesome undefined value.
The liberal mode rejects the above pattern by deeming `a` as unbound.
However, it also rejects
true & (a := 1); a
even though (a := 1) is always executed. Since there are several filters
in Wikimedia projects that rely on this behavior, we default the mode
to conservative for now.
Note that even the liberal mode doesn't really respect lexical scope
appeared in some other programming languages (see also T234690).
For instance:
(if true then (a := 1) else (a := 2) end); a
would be accepted by the liberal checker, even though under lexical scope,
`a` would be unbound. However, it is unlikely that lexical scope
will be suitable for the filter language, as most filters in
Wikimedia projects that have user-defined variable do violate lexical scope.
Bug: T260903
Bug: T238709
Bug: T237610
Bug: T234690
Bug: T231536
Change-Id: Ic6d030503e554933f8d220c6f87b680505918ae2
Create a dedicated "Exception" sub-namespace and remove the "AFP"
prefix, a leftover from the pre-namespace era.
Change-Id: I7e5fded9316d8b7d1628bc1a6ba8b1879ac901e1
Previously, for non-newly-created pages, AbuseFilter would get the text
for filtering twice: once in AbuseFilterHooks::filterEdit(), and then
again in RunVariableGenerator::getEditTextForFiltering(). (Plus another
call for the text of the previous revision.) The first copy of the text
is only passed into RunVariableGenerator::getEditVars(), and there only
used if the title doesn’t exist, otherwise it’s overwritten with the
second copy. Instead, let’s make AbuseFilterHooks not get the text at
all, and only get the text from the content when we actually need it
(the content is new).
Change-Id: Id12430fa6ba4643113b945e0d0c01b9c0ee1742f
