/**
* Validate and clean up parameters (e.g. from POST request).
* @return mixed (true on success, error string on failure)
*/
protected function doCheckParameters()
{
$action = $this->getAction();
if ($action === null) {
return 'review_param_missing';
// no action specified (approve, reject, de-approve)
} elseif (!$this->oldid) {
return 'review_no_oldid';
// no revision target
}
# Get the revision's current flags (if any)
$this->oldFrev = FlaggedRevision::newFromTitle($this->page, $this->oldid, FR_MASTER);
$this->oldFlags = $this->oldFrev ? $this->oldFrev->getTags() : FlaggedRevision::expandRevisionTags('');
// default
# Set initial value for newLastChangeTime (if unchanged on submit)
$this->newLastChangeTime = $this->lastChangeTime;
# Fill in implicit tag data for binary flag case
$iDims = $this->implicitDims();
if ($iDims) {
$this->dims = $iDims;
// binary flag case
}
if ($action === 'approve') {
# We must at least rate each category as 1, the minimum
if (in_array(0, $this->dims, true)) {
return 'review_too_low';
}
# Special token to discourage fiddling with templates/files...
if (!$this->skipValidationKey) {
$k = self::validationKey($this->templateParams, $this->imageParams, $this->fileVersion, $this->oldid, $this->sessionKey);
if ($this->validatedParams !== $k) {
return 'review_bad_key';
}
}
# Sanity check tags
if (!FlaggedRevs::flagsAreValid($this->dims)) {
return 'review_bad_tags';
}
# Check permissions with tags
if (!FlaggedRevs::userCanSetFlags($this->user, $this->dims, $this->oldFlags)) {
return 'review_denied';
}
} elseif ($action === 'unapprove') {
# Check permissions with old tags
if (!FlaggedRevs::userCanSetFlags($this->user, $this->oldFlags)) {
return 'review_denied';
}
}
return true;
}
