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phorge-phorge/src/applications/diffusion/controller/DiffusionMirrorEditController.php
epriestley d401036bd8 Prevent the use of file:// URIs in Diffusion
Summary:
Via HackerOne. There are two attacks here:

  - Configuring mirroring to a `file://` URI to place files on disk or overwrite another repository. This is not particularly severe.
  - Configuring cloning from a `file://` URI to read repositories you should not have access to. This is more severe.

Historically, repository creation and editing explicitly supported `file://` URIs to deal with use cases where you had something else managing repositories on the same machine. Since there were no permissions, repository management was admin-only, and you couldn't mirror, this was fine.

As we've evolved, this use case is a tiny minority use case and the security implications of `file://` URIs overwhelm the utility it provides. Prevent the use of `file://` URIs. Existing configured repositories won't stop working, you just can't add any new ones.

Also prevent `localPath` from being set via Conduit (see T4039).

Test Plan:
  - Tried to create a `file://` repository.
  - Tried to create a `file://` mirror.
  - Tried to create a `file://` repository via Conduit.
  - Created a non-`file://` repository.
  - Created a non-`file://` mirror.
  - Created a non-`file://` repository via Conduit.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9513
2014-06-13 07:07:00 -07:00

127 lines
3.4 KiB
PHP

<?php
final class DiffusionMirrorEditController
extends DiffusionController {
private $id;
public function willProcessRequest(array $data) {
$this->id = idx($data, 'id');
parent::willProcessRequest($data);
}
public function processRequest() {
$request = $this->getRequest();
$viewer = $request->getUser();
$drequest = $this->diffusionRequest;
$repository = $drequest->getRepository();
if ($this->id) {
$mirror = id(new PhabricatorRepositoryMirrorQuery())
->setViewer($viewer)
->withIDs(array($this->id))
->executeOne();
if (!$mirror) {
return new Aphront404Response();
}
$is_new = false;
} else {
$mirror = PhabricatorRepositoryMirror::initializeNewMirror($viewer)
->setRepositoryPHID($repository->getPHID())
->attachRepository($repository);
$is_new = true;
}
$edit_uri = $this->getRepositoryControllerURI($repository, 'edit/#mirrors');
$v_remote = $mirror->getRemoteURI();
$e_remote = true;
$v_credentials = $mirror->getCredentialPHID();
$e_credentials = null;
$credentials = id(new PassphraseCredentialQuery())
->setViewer($viewer)
->withIsDestroyed(false)
->execute();
$errors = array();
if ($request->isFormPost()) {
$v_remote = $request->getStr('remoteURI');
if (strlen($v_remote)) {
try {
PhabricatorRepository::assertValidRemoteURI($v_remote);
$e_remote = null;
} catch (Exception $ex) {
$e_remote = pht('Invalid');
$errors[] = $ex->getMessage();
}
} else {
$e_remote = pht('Required');
$errors[] = pht('You must provide a remote URI.');
}
$v_credentials = $request->getStr('credential');
if ($v_credentials) {
$phids = mpull($credentials, null, 'getPHID');
if (empty($phids[$v_credentials])) {
$e_credentials = pht('Invalid');
$errors[] = pht(
'You do not have permission to use those credentials.');
}
}
if (!$errors) {
$mirror
->setRemoteURI($v_remote)
->setCredentialPHID($v_credentials)
->save();
return id(new AphrontReloadResponse())->setURI($edit_uri);
}
}
$form_errors = null;
if ($errors) {
$form_errors = id(new AphrontErrorView())
->setErrors($errors);
}
if ($is_new) {
$title = pht('Create Mirror');
$submit = pht('Create Mirror');
} else {
$title = pht('Edit Mirror');
$submit = pht('Save Changes');
}
$form = id(new PHUIFormLayoutView())
->appendChild(
id(new AphrontFormTextControl())
->setLabel(pht('Remote URI'))
->setName('remoteURI')
->setValue($v_remote)
->setError($e_remote))
->appendChild(
id(new PassphraseCredentialControl())
->setLabel(pht('Credentials'))
->setName('credential')
->setAllowNull(true)
->setValue($v_credentials)
->setError($e_credentials)
->setOptions($credentials));
$dialog = id(new AphrontDialogView())
->setUser($viewer)
->setTitle($title)
->setWidth(AphrontDialogView::WIDTH_FORM)
->appendChild($form_errors)
->appendChild($form)
->addSubmitButton($submit)
->addCancelButton($edit_uri);
return id(new AphrontDialogResponse())
->setDialog($dialog);
}
}