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PhabricatorSettingsPanelSSHKeys.php
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Thu, Jun 19, 01:10

PhabricatorSettingsPanelSSHKeys.php
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<?php
final class PhabricatorSettingsPanelSSHKeys
extends PhabricatorSettingsPanel {
public function isEditableByAdministrators() {
return true;
}
public function getPanelKey() {
return 'ssh';
}
public function getPanelName() {
return pht('SSH Public Keys');
}
public function getPanelGroup() {
return pht('Authentication');
}
public function isEnabled() {
return true;
}
public function processRequest(AphrontRequest $request) {
$viewer = $request->getUser();
$user = $this->getUser();
$generate = $request->getStr('generate');
if ($generate) {
return $this->processGenerate($request);
}
$edit = $request->getStr('edit');
$delete = $request->getStr('delete');
if (!$edit && !$delete) {
return $this->renderKeyListView($request);
}
$token = id(new PhabricatorAuthSessionEngine())->requireHighSecuritySession(
$viewer,
$request,
$this->getPanelURI());
$id = nonempty($edit, $delete);
if ($id && is_numeric($id)) {
// NOTE: This prevents editing/deleting of keys not owned by the user.
$key = id(new PhabricatorUserSSHKey())->loadOneWhere(
'userPHID = %s AND id = %d',
$user->getPHID(),
(int)$id);
if (!$key) {
return new Aphront404Response();
}
} else {
$key = new PhabricatorUserSSHKey();
$key->setUserPHID($user->getPHID());
}
if ($delete) {
return $this->processDelete($request, $key);
}
$e_name = true;
$e_key = true;
$errors = array();
$entire_key = $key->getEntireKey();
if ($request->isFormPost()) {
$key->setName($request->getStr('name'));
$entire_key = $request->getStr('key');
if (!strlen($entire_key)) {
$errors[] = pht('You must provide an SSH Public Key.');
$e_key = pht('Required');
} else {
try {
list($type, $body, $comment) = self::parsePublicKey($entire_key);
$key->setKeyType($type);
$key->setKeyBody($body);
$key->setKeyHash(md5($body));
$key->setKeyComment($comment);
$e_key = null;
} catch (Exception $ex) {
$e_key = pht('Invalid');
$errors[] = $ex->getMessage();
}
}
if (!strlen($key->getName())) {
$errors[] = pht('You must name this public key.');
$e_name = pht('Required');
} else {
$e_name = null;
}
if (!$errors) {
try {
$key->save();
return id(new AphrontRedirectResponse())
->setURI($this->getPanelURI());
} catch (AphrontQueryDuplicateKeyException $ex) {
$e_key = pht('Duplicate');
$errors[] = pht('This public key is already associated with a user '.
'account.');
}
}
}
$is_new = !$key->getID();
if ($is_new) {
$header = pht('Add New SSH Public Key');
$save = pht('Add Key');
} else {
$header = pht('Edit SSH Public Key');
$save = pht('Save Changes');
}
$form = id(new AphrontFormView())
->setUser($viewer)
->addHiddenInput('edit', $is_new ? 'true' : $key->getID())
->appendChild(
id(new AphrontFormTextControl())
->setLabel(pht('Name'))
->setName('name')
->setValue($key->getName())
->setError($e_name))
->appendChild(
id(new AphrontFormTextAreaControl())
->setLabel(pht('Public Key'))
->setName('key')
->setValue($entire_key)
->setError($e_key))
->appendChild(
id(new AphrontFormSubmitControl())
->addCancelButton($this->getPanelURI())
->setValue($save));
$form_box = id(new PHUIObjectBoxView())
->setHeaderText($header)
->setFormErrors($errors)
->setForm($form);
return $form_box;
}
private function renderKeyListView(AphrontRequest $request) {
$user = $this->getUser();
$viewer = $request->getUser();
$keys = id(new PhabricatorUserSSHKey())->loadAllWhere(
'userPHID = %s',
$user->getPHID());
$rows = array();
foreach ($keys as $key) {
$rows[] = array(
phutil_tag(
'a',
array(
'href' => $this->getPanelURI('?edit='.$key->getID()),
),
$key->getName()),
$key->getKeyComment(),
$key->getKeyType(),
phabricator_date($key->getDateCreated(), $viewer),
phabricator_time($key->getDateCreated(), $viewer),
javelin_tag(
'a',
array(
'href' => $this->getPanelURI('?delete='.$key->getID()),
'class' => 'small grey button',
'sigil' => 'workflow',
),
pht('Delete')),
);
}
$table = new AphrontTableView($rows);
$table->setNoDataString(pht("You haven't added any SSH Public Keys."));
$table->setHeaders(
array(
pht('Name'),
pht('Comment'),
pht('Type'),
pht('Created'),
pht('Time'),
'',
));
$table->setColumnClasses(
array(
'wide pri',
'',
'',
'',
'right',
'action',
));
$panel = new PHUIObjectBoxView();
$header = new PHUIHeaderView();
$upload_icon = id(new PHUIIconView())
->setIconFont('fa-upload');
$upload_button = id(new PHUIButtonView())
->setText(pht('Upload Public Key'))
->setHref($this->getPanelURI('?edit=true'))
->setTag('a')
->setIcon($upload_icon);
try {
PhabricatorSSHKeyGenerator::assertCanGenerateKeypair();
$can_generate = true;
} catch (Exception $ex) {
$can_generate = false;
}
$generate_icon = id(new PHUIIconView())
->setIconFont('fa-lock');
$generate_button = id(new PHUIButtonView())
->setText(pht('Generate Keypair'))
->setHref($this->getPanelURI('?generate=true'))
->setTag('a')
->setWorkflow(true)
->setDisabled(!$can_generate)
->setIcon($generate_icon);
$header->setHeader(pht('SSH Public Keys'));
$header->addActionLink($generate_button);
$header->addActionLink($upload_button);
$panel->setHeader($header);
$panel->appendChild($table);
return $panel;
}
private function processDelete(
AphrontRequest $request,
PhabricatorUserSSHKey $key) {
$viewer = $request->getUser();
$user = $this->getUser();
$name = phutil_tag('strong', array(), $key->getName());
if ($request->isDialogFormPost()) {
$key->delete();
return id(new AphrontReloadResponse())
->setURI($this->getPanelURI());
}
$dialog = id(new AphrontDialogView())
->setUser($viewer)
->addHiddenInput('delete', $key->getID())
->setTitle(pht('Really delete SSH Public Key?'))
->appendChild(phutil_tag('p', array(), pht(
'The key "%s" will be permanently deleted, and you will not longer be '.
'able to use the corresponding private key to authenticate.',
$name)))
->addSubmitButton(pht('Delete Public Key'))
->addCancelButton($this->getPanelURI());
return id(new AphrontDialogResponse())
->setDialog($dialog);
}
private function processGenerate(AphrontRequest $request) {
$user = $this->getUser();
$viewer = $request->getUser();
$token = id(new PhabricatorAuthSessionEngine())->requireHighSecuritySession(
$viewer,
$request,
$this->getPanelURI());
$is_self = ($user->getPHID() == $viewer->getPHID());
if ($request->isFormPost()) {
$keys = PhabricatorSSHKeyGenerator::generateKeypair();
list($public_key, $private_key) = $keys;
$file = PhabricatorFile::buildFromFileDataOrHash(
$private_key,
array(
'name' => 'id_rsa_phabricator.key',
'ttl' => time() + (60 * 10),
'viewPolicy' => PhabricatorPolicies::POLICY_NOONE,
));
list($type, $body, $comment) = self::parsePublicKey($public_key);
$key = id(new PhabricatorUserSSHKey())
->setUserPHID($user->getPHID())
->setName('id_rsa_phabricator')
->setKeyType($type)
->setKeyBody($body)
->setKeyHash(md5($body))
->setKeyComment(pht('Generated'))
->save();
// NOTE: We're disabling workflow on submit so the download works. We're
// disabling workflow on cancel so the page reloads, showing the new
// key.
if ($is_self) {
$what_happened = pht(
'The public key has been associated with your Phabricator '.
'account. Use the button below to download the private key.');
} else {
$what_happened = pht(
'The public key has been associated with the %s account. '.
'Use the button below to download the private key.',
phutil_tag('strong', array(), $user->getUsername()));
}
$dialog = id(new AphrontDialogView())
->setTitle(pht('Download Private Key'))
->setUser($viewer)
->setDisableWorkflowOnCancel(true)
->setDisableWorkflowOnSubmit(true)
->setSubmitURI($file->getDownloadURI())
->appendParagraph(
pht(
'Successfully generated a new keypair.'))
->appendParagraph($what_happened)
->appendParagraph(
pht(
'After you download the private key, it will be destroyed. '.
'You will not be able to retrieve it if you lose your copy.'))
->addSubmitButton(pht('Download Private Key'))
->addCancelButton($this->getPanelURI(), pht('Done'));
return id(new AphrontDialogResponse())
->setDialog($dialog);
}
$dialog = id(new AphrontDialogView())
->setUser($viewer)
->addCancelButton($this->getPanelURI());
try {
PhabricatorSSHKeyGenerator::assertCanGenerateKeypair();
if ($is_self) {
$explain = pht(
'This will generate an SSH keypair, associate the public key '.
'with your account, and let you download the private key.');
} else {
$explain = pht(
'This will generate an SSH keypair, associate the public key with '.
'the %s account, and let you download the private key.',
phutil_tag('strong', array(), $user->getUsername()));
}
$dialog
->addHiddenInput('generate', true)
->setTitle(pht('Generate New Keypair'))
->appendParagraph($explain)
->appendParagraph(
pht(
"Phabricator will not retain a copy of the private key."))
->addSubmitButton(pht('Generate Keypair'));
} catch (Exception $ex) {
$dialog
->setTitle(pht('Unable to Generate Keys'))
->appendParagraph($ex->getMessage());
}
return id(new AphrontDialogResponse())
->setDialog($dialog);
}
private static function parsePublicKey($entire_key) {
$parts = str_replace("\n", '', trim($entire_key));
$parts = preg_split('/\s+/', $parts);
if (count($parts) == 2) {
$parts[] = ''; // Add an empty comment part.
} else if (count($parts) == 3) {
// This is the expected case.
} else {
if (preg_match('/private\s*key/i', $entire_key)) {
// Try to give the user a better error message if it looks like
// they uploaded a private key.
throw new Exception(
pht('Provide your public key, not your private key!'));
} else {
throw new Exception(
pht('Provided public key is not properly formatted.'));
}
}
list($type, $body, $comment) = $parts;
$recognized_keys = array(
'ssh-dsa',
'ssh-dss',
'ssh-rsa',
'ecdsa-sha2-nistp256',
'ecdsa-sha2-nistp384',
'ecdsa-sha2-nistp521',
);
if (!in_array($type, $recognized_keys)) {
$type_list = implode(', ', $recognized_keys);
throw new Exception(
pht(
'Public key type should be one of: %s',
$type_list));
}
return array($type, $body, $comment);
}
}

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