mirror of
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f1c75a6382
Summary: Ref T3775 (discussion here). Ref T2625. T3775 presents two problems: # Existing tools which linked to `/differential/active/epriestley/` (that is, put a username in the URL) can't generate search links now. # Humans can't edit the URL anymore, either. I think (1) is an actual issue, and this fixes it. I think (2) is pretty fluff, and this doesn't really try to fix it, although it probably improves it. The fix for (1) is: - Provide a helper to read a parameter containing either a list of user PHIDs or a list of usernames, so `/?users[]=PHID-USER-xyz` (from a tokenizer) and `/?users=alincoln,htaft` (from an external program) are equivalent inputs. - Rename all the form parameters to be more digestable (`authorPHIDs` -> `authors`). Almost all of them were in this form already anyway. This just gives us `?users=alincoln` instead of `userPHIDs=alincoln`. - Inside ApplicationSearch, if a request has no query associated with it but does have query parameters, build a query from the request instead of issuing the user's default query. Basically, this means that `/differential/` runs the default query, while `/differential/?users=x` runs a custom query. Test Plan: {F56612} Reviewers: btrahan Reviewed By: btrahan CC: aran Maniphest Tasks: T2625, T3775 Differential Revision: https://secure.phabricator.com/D6840
470 lines
13 KiB
PHP
470 lines
13 KiB
PHP
<?php
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/**
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*
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* @task data Accessing Request Data
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*
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* @group aphront
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*/
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final class AphrontRequest {
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// NOTE: These magic request-type parameters are automatically included in
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// certain requests (e.g., by phabricator_form(), JX.Request,
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// JX.Workflow, and ConduitClient) and help us figure out what sort of
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// response the client expects.
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const TYPE_AJAX = '__ajax__';
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const TYPE_FORM = '__form__';
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const TYPE_CONDUIT = '__conduit__';
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const TYPE_WORKFLOW = '__wflow__';
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const TYPE_CONTINUE = '__continue__';
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const TYPE_PREVIEW = '__preview__';
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private $host;
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private $path;
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private $requestData;
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private $user;
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private $applicationConfiguration;
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final public function __construct($host, $path) {
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$this->host = $host;
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$this->path = $path;
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}
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final public function setApplicationConfiguration(
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$application_configuration) {
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$this->applicationConfiguration = $application_configuration;
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return $this;
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}
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final public function getApplicationConfiguration() {
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return $this->applicationConfiguration;
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}
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final public function setPath($path) {
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$this->path = $path;
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return $this;
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}
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final public function getPath() {
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return $this->path;
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}
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final public function getHost() {
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// The "Host" header may include a port number, or may be a malicious
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// header in the form "realdomain.com:ignored@evil.com". Invoke the full
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// parser to extract the real domain correctly. See here for coverage of
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// a similar issue in Django:
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//
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// https://www.djangoproject.com/weblog/2012/oct/17/security/
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$uri = new PhutilURI('http://'.$this->host);
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return $uri->getDomain();
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}
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/* -( Accessing Request Data )--------------------------------------------- */
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/**
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* @task data
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*/
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final public function setRequestData(array $request_data) {
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$this->requestData = $request_data;
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return $this;
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}
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/**
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* @task data
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*/
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final public function getRequestData() {
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return $this->requestData;
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}
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/**
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* @task data
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*/
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final public function getInt($name, $default = null) {
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if (isset($this->requestData[$name])) {
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return (int)$this->requestData[$name];
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} else {
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return $default;
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}
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}
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/**
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* @task data
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*/
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final public function getBool($name, $default = null) {
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if (isset($this->requestData[$name])) {
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if ($this->requestData[$name] === 'true') {
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return true;
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} else if ($this->requestData[$name] === 'false') {
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return false;
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} else {
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return (bool)$this->requestData[$name];
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}
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} else {
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return $default;
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}
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}
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/**
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* @task data
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*/
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final public function getStr($name, $default = null) {
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if (isset($this->requestData[$name])) {
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$str = (string)$this->requestData[$name];
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// Normalize newline craziness.
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$str = str_replace(
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array("\r\n", "\r"),
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array("\n", "\n"),
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$str);
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return $str;
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} else {
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return $default;
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}
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}
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/**
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* @task data
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*/
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final public function getArr($name, $default = array()) {
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if (isset($this->requestData[$name]) &&
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is_array($this->requestData[$name])) {
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return $this->requestData[$name];
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} else {
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return $default;
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}
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}
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/**
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* @task data
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*/
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final public function getStrList($name, $default = array()) {
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if (!isset($this->requestData[$name])) {
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return $default;
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}
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$list = $this->getStr($name);
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$list = preg_split('/[\s,]+/', $list, $limit = -1, PREG_SPLIT_NO_EMPTY);
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return $list;
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}
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/**
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* @task data
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*/
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final public function getExists($name) {
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return array_key_exists($name, $this->requestData);
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}
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final public function getFileExists($name) {
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return isset($_FILES[$name]) &&
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(idx($_FILES[$name], 'error') !== UPLOAD_ERR_NO_FILE);
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}
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final public function isHTTPGet() {
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return ($_SERVER['REQUEST_METHOD'] == 'GET');
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}
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final public function isHTTPPost() {
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return ($_SERVER['REQUEST_METHOD'] == 'POST');
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}
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final public function isAjax() {
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return $this->getExists(self::TYPE_AJAX);
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}
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final public function isJavelinWorkflow() {
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return $this->getExists(self::TYPE_WORKFLOW);
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}
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final public function isConduit() {
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return $this->getExists(self::TYPE_CONDUIT);
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}
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public static function getCSRFTokenName() {
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return '__csrf__';
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}
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public static function getCSRFHeaderName() {
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return 'X-Phabricator-Csrf';
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}
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final public function validateCSRF() {
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$token_name = self::getCSRFTokenName();
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$token = $this->getStr($token_name);
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// No token in the request, check the HTTP header which is added for Ajax
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// requests.
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if (empty($token)) {
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$token = self::getHTTPHeader(self::getCSRFHeaderName());
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}
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$valid = $this->getUser()->validateCSRFToken($token);
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if (!$valid) {
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// Add some diagnostic details so we can figure out if some CSRF issues
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// are JS problems or people accessing Ajax URIs directly with their
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// browsers.
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if ($token) {
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$token_info = "with an invalid CSRF token";
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} else {
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$token_info = "without a CSRF token";
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}
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if ($this->isAjax()) {
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$more_info = "(This was an Ajax request, {$token_info}.)";
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} else {
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$more_info = "(This was a web request, {$token_info}.)";
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}
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// Give a more detailed explanation of how to avoid the exception
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// in developer mode.
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if (PhabricatorEnv::getEnvConfig('phabricator.developer-mode')) {
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$more_info = $more_info .
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"To avoid this error, use phabricator_form() to construct forms. " .
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"If you are already using phabricator_form(), make sure the form " .
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"'action' uses a relative URI (i.e., begins with a '/'). Forms " .
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"using absolute URIs do not include CSRF tokens, to prevent " .
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"leaking tokens to external sites.\n\n" .
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"If this page performs writes which do not require CSRF " .
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"protection (usually, filling caches or logging), you can use " .
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"AphrontWriteGuard::beginScopedUnguardedWrites() to temporarily " .
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"bypass CSRF protection while writing. You should use this only " .
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"for writes which can not be protected with normal CSRF " .
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"mechanisms.\n\n" .
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"Some UI elements (like PhabricatorActionListView) also have " .
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"methods which will allow you to render links as forms (like " .
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"setRenderAsForm(true)).";
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}
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// This should only be able to happen if you load a form, pull your
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// internet for 6 hours, and then reconnect and immediately submit,
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// but give the user some indication of what happened since the workflow
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// is incredibly confusing otherwise.
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throw new AphrontCSRFException(
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"The form you just submitted did not include a valid CSRF token. ".
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"This token is a technical security measure which prevents a ".
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"certain type of login hijacking attack. However, the token can ".
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"become invalid if you leave a page open for more than six hours ".
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"without a connection to the internet. To fix this problem: reload ".
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"the page, and then resubmit it. All data inserted to the form will ".
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"be lost in some browsers so copy them somewhere before reloading.\n\n".
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$more_info);
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}
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return true;
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}
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final public function isFormPost() {
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$post = $this->getExists(self::TYPE_FORM) &&
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$this->isHTTPPost();
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if (!$post) {
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return false;
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}
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return $this->validateCSRF();
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}
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final public function getCookie($name, $default = null) {
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return idx($_COOKIE, $name, $default);
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}
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final public function clearCookie($name) {
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$this->setCookie($name, '', time() - (60 * 60 * 24 * 30));
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unset($_COOKIE[$name]);
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}
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final public function setCookie($name, $value, $expire = null) {
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$is_secure = false;
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// If a base URI has been configured, ensure cookies are only set on that
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// domain. Also, use the URI protocol to control SSL-only cookies.
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$base_uri = PhabricatorEnv::getEnvConfig('phabricator.base-uri');
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if ($base_uri) {
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$alternates = PhabricatorEnv::getEnvConfig('phabricator.allowed-uris');
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$allowed_uris = array_merge(
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array($base_uri),
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$alternates);
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$host = $this->getHost();
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$match = null;
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foreach ($allowed_uris as $allowed_uri) {
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$uri = new PhutilURI($allowed_uri);
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$domain = $uri->getDomain();
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if ($host == $domain) {
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$match = $uri;
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break;
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}
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}
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if ($match === null) {
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if (count($allowed_uris) > 1) {
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throw new Exception(
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pht(
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'This Phabricator install is configured as "%s", but you are '.
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'accessing it via "%s". Access Phabricator via the primary '.
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'configured domain, or one of the permitted alternate '.
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'domains: %s. Phabricator will not set cookies on other domains '.
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'for security reasons.',
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$base_uri,
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$host,
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implode(', ', $alternates)));
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} else {
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throw new Exception(
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pht(
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'This Phabricator install is configured as "%s", but you are '.
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'accessing it via "%s". Acccess Phabricator via the primary '.
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'configured domain. Phabricator will not set cookies on other '.
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'domains for security reasons.',
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$base_uri,
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$host));
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}
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}
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$base_domain = $match->getDomain();
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$is_secure = ($match->getProtocol() == 'https');
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} else {
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$base_uri = new PhutilURI(PhabricatorEnv::getRequestBaseURI());
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$base_domain = $base_uri->getDomain();
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}
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if ($expire === null) {
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$expire = time() + (60 * 60 * 24 * 365 * 5);
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}
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setcookie(
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$name,
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$value,
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$expire,
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$path = '/',
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$base_domain,
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$is_secure,
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$http_only = true);
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$_COOKIE[$name] = $value;
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return $this;
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}
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final public function setUser($user) {
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$this->user = $user;
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return $this;
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}
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final public function getUser() {
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return $this->user;
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}
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final public function getRequestURI() {
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$get = $_GET;
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unset($get['__path__']);
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$path = phutil_escape_uri($this->getPath());
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return id(new PhutilURI($path))->setQueryParams($get);
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}
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final public function isDialogFormPost() {
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return $this->isFormPost() && $this->getStr('__dialog__');
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}
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final public function getRemoteAddr() {
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return $_SERVER['REMOTE_ADDR'];
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}
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public function isHTTPS() {
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if (empty($_SERVER['HTTPS'])) {
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return false;
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}
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if (!strcasecmp($_SERVER["HTTPS"], "off")) {
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return false;
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}
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return true;
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}
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public function isContinueRequest() {
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return $this->isFormPost() && $this->getStr('__continue__');
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}
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public function isPreviewRequest() {
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return $this->isFormPost() && $this->getStr('__preview__');
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}
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/**
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* Get application request parameters in a flattened form suitable for
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* inclusion in an HTTP request, excluding parameters with special meanings.
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* This is primarily useful if you want to ask the user for more input and
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* then resubmit their request.
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*
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* @return dict<string, string> Original request parameters.
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*/
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public function getPassthroughRequestParameters() {
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return self::flattenData($this->getPassthroughRequestData());
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}
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/**
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* Get request data other than "magic" parameters.
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*
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* @return dict<string, wild> Request data, with magic filtered out.
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*/
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public function getPassthroughRequestData() {
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$data = $this->getRequestData();
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// Remove magic parameters like __dialog__ and __ajax__.
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foreach ($data as $key => $value) {
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if (!strncmp($key, '__', 2)) {
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unset($data[$key]);
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}
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}
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return $data;
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}
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/**
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* Flatten an array of key-value pairs (possibly including arrays as values)
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* into a list of key-value pairs suitable for submitting via HTTP request
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* (with arrays flattened).
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*
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* @param dict<string, wild> Data to flatten.
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* @return dict<string, string> Flat data suitable for inclusion in an HTTP
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* request.
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*/
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public static function flattenData(array $data) {
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$result = array();
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foreach ($data as $key => $value) {
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if (is_array($value)) {
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foreach (self::flattenData($value) as $fkey => $fvalue) {
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$fkey = '['.preg_replace('/(?=\[)|$/', ']', $fkey, $limit = 1);
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$result[$key.$fkey] = $fvalue;
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}
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} else {
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$result[$key] = (string)$value;
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}
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}
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ksort($result);
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return $result;
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}
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public static function getHTTPHeader($name, $default = null) {
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// PHP mangles HTTP headers by uppercasing them and replacing hyphens with
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// underscores, then prepending 'HTTP_'.
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$php_index = strtoupper($name);
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$php_index = str_replace('-', '_', $php_index);
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$php_index = 'HTTP_'.$php_index;
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return idx($_SERVER, $php_index, $default);
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}
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}
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