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819b833607
Summary: Ref T13008. We haven't hit any issues with this, but I can imagine we might in the future. When one host makes an intracluster request to another host, the `$viewer` ends up as the omnipotent viewer. This viewer isn't logged in, so they'll currently accumulate rate limit points at a high rate. Instead, don't give them any points. These requests are always legitimate, and if they originated from a user request, that request should be the one getting rate limited. Test Plan: Browsed around. Reviewers: amckinley Reviewed By: amckinley Maniphest Tasks: T13008 Differential Revision: https://secure.phabricator.com/D18708
66 lines
1.6 KiB
PHP
66 lines
1.6 KiB
PHP
<?php
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final class PhabricatorClientRateLimit
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extends PhabricatorClientLimit {
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protected function getBucketDuration() {
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return 60;
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}
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protected function getBucketCount() {
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return 5;
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}
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protected function shouldRejectConnection($score) {
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$limit = $this->getLimit();
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// Reject connections if the average score across all buckets exceeds the
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// limit.
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$average_score = $score / $this->getBucketCount();
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return ($average_score > $limit);
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}
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protected function getConnectScore() {
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return 0;
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}
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protected function getPenaltyScore() {
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return 1;
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}
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protected function getDisconnectScore(array $request_state) {
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$score = 1;
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// If the user was logged in, let them make more requests.
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if (isset($request_state['viewer'])) {
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$viewer = $request_state['viewer'];
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if ($viewer->isOmnipotent()) {
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// If the viewer was omnipotent, this was an intracluster request or
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// some other kind of special request, so don't give it any points
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// toward rate limiting.
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$score = 0;
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} else if ($viewer->isLoggedIn()) {
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// If the viewer was logged in, give them fewer points than if they
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// were logged out, since this traffic is much more likely to be
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// legitimate.
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$score = 0.25;
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}
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}
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return $score;
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}
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protected function getRateLimitReason($score) {
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$client_key = $this->getClientKey();
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// NOTE: This happens before we load libraries, so we can not use pht()
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// here.
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return
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"TOO MANY REQUESTS\n".
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"You (\"{$client_key}\") are issuing too many requests ".
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"too quickly.\n";
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}
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}
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