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fix(federation): allows equal signs in federation id #51994

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Merged
susnux merged 1 commit into from
Apr 23, 2025
Merged

fix(federation): allows equal signs in federation id #51994

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5 changes: 4 additions & 1 deletion lib/private/Federation/CloudIdManager.php
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Original file line number Diff line number Diff line change
Expand Up @@ -106,7 +106,10 @@ public function resolveCloudId(string $cloudId): ICloudId {
$user = substr($id, 0, $lastValidAtPos);
$remote = substr($id, $lastValidAtPos + 1);

$this->userManager->validateUserId($user);
// We accept slightly more chars when working with federationId than with a local userId.
// We remove those eventual chars from the UserId before using
// the IUserManager API to confirm its format.
$this->userManager->validateUserId(str_replace('=', '-', $user));

if (!empty($user) && !empty($remote)) {
$remote = $this->ensureDefaultProtocol($remote);
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4 changes: 4 additions & 0 deletions tests/lib/Federation/CloudIdManagerTest.php
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Expand Up @@ -91,6 +91,10 @@ public function cloudIdProvider(): array {
['[email protected]/cloud/', 'test', 'example.com/cloud', '[email protected]/cloud'],
['[email protected]/cloud/index.php', 'test', 'example.com/cloud', '[email protected]/cloud'],
['[email protected]@example.com', '[email protected]', 'example.com', '[email protected]@example.com'],

// Equal signs are not valid on Nextcloud side, but can be used by other federated OCM compatible servers
['[email protected]', 'test==', 'example.com', '[email protected]'],
['[email protected]', '==', 'example.com', '[email protected]'],
];
}

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