Issues in ElggRewriteTester.php - Fixed Issues - Inspection of "Merge pull request #11088 from mrclay/5790_invalid..." - Elgg/Elgg - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

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by Steve

created 2017-08-07 13:14 UTC

engine/classes/ElggRewriteTester.php (1 issue)

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Evan Winslow 1

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<?php

use Elgg\Filesystem\Directory;
.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php

/**
 * Elgg RewriteTester.
 * Test if URL rewriting is working.
 *
 * @package    Elgg.Core
 * @subpackage Installer
 */
class ElggRewriteTester {
	protected $webserver;
	protected $serverSupportsRemoteRead;
	protected $rewriteTestPassed;
	protected $htaccessIssue;

	/**
	 * Set the webserver as unknown.
	 */
	public function __construct() {
		$this->webserver = 'unknown';
	}

	/**
	 * Run the rewrite test and return a status array
	 *
	 * @param string $url  URL of rewrite test
	 * @param string $path Root directory of Elgg with trailing slash
	 *
	 * @return array
	 */
	public function run($url, $path) {

		$this->webserver = \ElggRewriteTester::guessWebServer();

		$this->rewriteTestPassed = $this->runRewriteTest($url);

		if ($this->rewriteTestPassed == false) {
			if ($this->webserver == 'apache' || $this->webserver == 'unknown') {
				if ($this->createHtaccess($url, $path)) {
					$this->rewriteTestPassed = $this->runRewriteTest($url);
				}
			}
		}

		return $this->returnStatus($url);
	}

	/**
	 * Guess the web server from $_SERVER['SERVER_SOFTWARE']
	 *
	 * @return string
	 */
	public static function guessWebServer() {
		$serverString = strtolower($_SERVER['SERVER_SOFTWARE']);
		$possibleServers = ['apache', 'nginx', 'lighttpd', 'iis'];
		foreach ($possibleServers as $server) {
			if (strpos($serverString, $server) !== false) {
				return $server;
			}
		}
		return 'unknown';
	}

	/**
	 * Guess if url contains subdirectory or not.
	 *
	 * @param string $url Rewrite test URL
	 *
	 * @return string|bool Subdirectory string with beginning and trailing slash or false if were unable to determine subdirectory
	 * or pointing at root of domain already
	 */
	public function guessSubdirectory($url) {
		$elements = parse_url($url);
		if (!$elements || !isset($elements['path'])) {
			return false;
		}
		$subdir = trim(dirname($elements['path']), '/');
		if (!$subdir) {
			return false;
		} else {
			return "/$subdir/";
		}
	}

	/**
	 * Hit the rewrite test URL to determine if the rewrite rules are working
	 *
	 * @param string $url Rewrite test URL
	 *
	 * @return bool
	 */
	public function runRewriteTest($url) {
		$this->serverSupportsRemoteRead = ($this->fetchUrl($url) === \Elgg\Application::REWRITE_TEST_OUTPUT);
		return $this->serverSupportsRemoteRead;
	}
	
	/**
	 * Check whether the site homepage can be fetched via curl
	 *
	 * @return boolean
	 */
	public function runLocalhostAccessTest() {
		$url = _elgg_services()->config->wwwroot;
		return (bool) $this->fetchUrl($url);
	}

	/**
	 * Fetch a URL
	 *
	 * @param string $url The URL
	 *
	 * @return string Note that empty string may imply failure in fetching or empty response
	 */
	private function fetchUrl($url) {
		$response = '';

		if (ini_get('allow_url_fopen')) {
			$ctx = stream_context_create([
				'http' => [
					'follow_location' => 0,
					'timeout' => 5,
				],
			]);
			$response = @file_get_contents($url, null, $ctx);
		}

		if (!$response && function_exists('curl_init')) {
			$ch = curl_init();
			curl_setopt($ch, CURLOPT_URL, $url);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($ch, CURLOPT_TIMEOUT, 5);
			curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
			$response = curl_exec($ch);
			curl_close($ch);
		}

		return (string) $response;
	}

	/**
	 * Create Elgg's .htaccess file or confirm that it exists
	 *
	 * @param string $url URL of rewrite test
	 *
	 * @return bool
	 */
	public function createHtaccess($url) {
		$root = Directory\Local::root();
		$file = $root->getFile(".htaccess");
		if ($file->exists()) {
			// check that this is the Elgg .htaccess
			$data = $file->getContents();
			if ($data === false) {
				// don't have permission to read the file
				$this->htaccessIssue = 'read_permission';
				return false;
			}
			if (strpos($data, 'Elgg') === false) {
				$this->htaccessIssue = 'non_elgg_htaccess';
				return false;
			} else {
				// check if this is an old Elgg htaccess
				if (strpos($data, 'RewriteRule ^rewrite.php$ install.php') == false) {
					$this->htaccessIssue = 'old_elgg_htaccess';
					return false;
				}
				return true;
			}
		}

		if (!is_writable($root->getPath())) {
			$this->htaccessIssue = 'write_permission';
			return false;
		}

		// create the .htaccess file
		$result = copy(\Elgg\Application::elggDir()->getPath("install/config/htaccess.dist"), $file->getPath());
		if (!$result) {
			$this->htaccessIssue = 'cannot_copy';
			return false;
		}
		
		// does default RewriteBase work already?
		if (!$this->runRewriteTest($url)) {
			//try to rewrite to guessed subdirectory
			if ($subdir = $this->guessSubdirectory($url)) {
				$contents = $file->getContents();
				$contents = preg_replace("/#RewriteBase \/(\r?\n)/", "RewriteBase $subdir\$1", $contents);
				if ($contents) {
					$file->putContents($contents);
				}
			}
		}

		return true;
	}

	/**
	 * Create the status array required by the ElggInstaller
	 *
	 * @param string $url Rewrite test URL
	 *
	 * @return array
	 */
	protected function returnStatus($url) {
		if ($this->rewriteTestPassed) {
			return [
				'severity' => 'pass',
				'message' => _elgg_services()->translator->translate('install:check:rewrite:success'),
			];
		}

		if ($this->serverSupportsRemoteRead == false) {
			$msg = _elgg_services()->translator->translate('install:warning:rewrite:unknown', [$url]);
			$msg .= elgg_view('install/js_rewrite_check', ['url' => $url]);
			
			return [
				'severity' => 'warning',
				'message' => $msg,
			];
		}

		if ($this->webserver == 'apache') {
			$serverString = _elgg_services()->translator->translate('install:error:rewrite:apache');
			$msg = "$serverString\n\n";
			if (!isset($this->htaccessIssue)) {
				$msg .= _elgg_services()->translator->translate('install:error:rewrite:allowoverride');
				$msg .= elgg_view('install/js_rewrite_check', ['url' => $url]);
			
				return [
					'severity' => 'warning',
					'message' => $msg,
				];
			}
			$msg .= _elgg_services()->translator->translate("install:error:rewrite:htaccess:{$this->htaccessIssue}");
			return [
				'severity' => 'warning',
				'message' => $msg,
			];
		}

		if ($this->webserver != 'unknown') {
			$serverString = _elgg_services()->translator->translate("install:error:rewrite:{$this->webserver}");
			$msg = "$serverString\n\n";
			$msg .= _elgg_services()->translator->translate("install:error:rewrite:altserver");
			return [
				'severity' => 'warning',
				'message' => $msg,
			];
		}

		return [
			'severity' => 'warning',
			'message' => _elgg_services()->translator->translate('install:error:rewrite:unknown'),
		];
	}
}


1			<?php
2
3			use Elgg\Filesystem\Directory;
			0 ignored issues – show Bug introduced 2017-03-21 16:18 UTC by Report Bug Copy Issue Report Show Similar Issues like this This use statement conflicts with another class in this namespace, `Directory`. Let’s assume that you have a directory layout like this: . \|-- OtherDir \| \|-- Bar.php \| `-- Foo.php `-- SomeDir `-- Foo.php and let’s assume the following content of `Bar.php`: // Bar.php namespace OtherDir; use SomeDir\Foo; // This now conflicts the class OtherDir\Foo If both files `OtherDir/Foo.php` and `SomeDir/Foo.php` are loaded in the same runtime, you will see a PHP error such as the following: PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php However, as `OtherDir/Foo.php` does not necessarily have to be loaded and the error is only triggered if it is loaded before `OtherDir/Bar.php`, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: // Bar.php namespace OtherDir; use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore. Loading history...
4
5			/**
6			* Elgg RewriteTester.
7			* Test if URL rewriting is working.
8			*
9			* @package Elgg.Core
10			* @subpackage Installer
11			*/
12			class ElggRewriteTester {
13			protected $webserver;
14			protected $serverSupportsRemoteRead;
15			protected $rewriteTestPassed;
16			protected $htaccessIssue;
17
18			/**
19			* Set the webserver as unknown.
20			*/
21			public function __construct() {
22			$this->webserver = 'unknown';
23			}
24
25			/**
26			* Run the rewrite test and return a status array
27			*
28			* @param string $url URL of rewrite test
29			* @param string $path Root directory of Elgg with trailing slash
30			*
31			* @return array
32			*/
33			public function run($url, $path) {
34
35			$this->webserver = \ElggRewriteTester::guessWebServer();
36
37			$this->rewriteTestPassed = $this->runRewriteTest($url);
38
39			if ($this->rewriteTestPassed == false) {
40			if ($this->webserver == 'apache' \|\| $this->webserver == 'unknown') {
41			if ($this->createHtaccess($url, $path)) {
42			$this->rewriteTestPassed = $this->runRewriteTest($url);
43			}
44			}
45			}
46
47			return $this->returnStatus($url);
48			}
49
50			/**
51			* Guess the web server from $_SERVER['SERVER_SOFTWARE']
52			*
53			* @return string
54			*/
55			public static function guessWebServer() {
56			$serverString = strtolower($_SERVER['SERVER_SOFTWARE']);
57			$possibleServers = ['apache', 'nginx', 'lighttpd', 'iis'];
58			foreach ($possibleServers as $server) {
59			if (strpos($serverString, $server) !== false) {
60			return $server;
61			}
62			}
63			return 'unknown';
64			}
65
66			/**
67			* Guess if url contains subdirectory or not.
68			*
69			* @param string $url Rewrite test URL
70			*
71			* @return string\|bool Subdirectory string with beginning and trailing slash or false if were unable to determine subdirectory
72			* or pointing at root of domain already
73			*/
74			public function guessSubdirectory($url) {
75			$elements = parse_url($url);
76			if (!$elements \|\| !isset($elements['path'])) {
77			return false;
78			}
79			$subdir = trim(dirname($elements['path']), '/');
80			if (!$subdir) {
81			return false;
82			} else {
83			return "/$subdir/";
84			}
85			}
86
87			/**
88			* Hit the rewrite test URL to determine if the rewrite rules are working
89			*
90			* @param string $url Rewrite test URL
91			*
92			* @return bool
93			*/
94			public function runRewriteTest($url) {
95			$this->serverSupportsRemoteRead = ($this->fetchUrl($url) === \Elgg\Application::REWRITE_TEST_OUTPUT);
96			return $this->serverSupportsRemoteRead;
97			}
98
99			/**
100			* Check whether the site homepage can be fetched via curl
101			*
102			* @return boolean
103			*/
104			public function runLocalhostAccessTest() {
105			$url = _elgg_services()->config->wwwroot;
106			return (bool) $this->fetchUrl($url);
107			}
108
109			/**
110			* Fetch a URL
111			*
112			* @param string $url The URL
113			*
114			* @return string Note that empty string may imply failure in fetching or empty response
115			*/
116			private function fetchUrl($url) {
117			$response = '';
118
119			if (ini_get('allow_url_fopen')) {
120			$ctx = stream_context_create([
121			'http' => [
122			'follow_location' => 0,
123			'timeout' => 5,
124			],
125			]);
126			$response = @file_get_contents($url, null, $ctx);
127			}
128
129			if (!$response && function_exists('curl_init')) {
130			$ch = curl_init();
131			curl_setopt($ch, CURLOPT_URL, $url);
132			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
133			curl_setopt($ch, CURLOPT_TIMEOUT, 5);
134			curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
135			$response = curl_exec($ch);
136			curl_close($ch);
137			}
138
139			return (string) $response;
140			}
141
142			/**
143			* Create Elgg's .htaccess file or confirm that it exists
144			*
145			* @param string $url URL of rewrite test
146			*
147			* @return bool
148			*/
149			public function createHtaccess($url) {
150			$root = Directory\Local::root();
151			$file = $root->getFile(".htaccess");
152			if ($file->exists()) {
153			// check that this is the Elgg .htaccess
154			$data = $file->getContents();
155			if ($data === false) {
156			// don't have permission to read the file
157			$this->htaccessIssue = 'read_permission';
158			return false;
159			}
160			if (strpos($data, 'Elgg') === false) {
161			$this->htaccessIssue = 'non_elgg_htaccess';
162			return false;
163			} else {
164			// check if this is an old Elgg htaccess
165			if (strpos($data, 'RewriteRule ^rewrite.php$ install.php') == false) {
166			$this->htaccessIssue = 'old_elgg_htaccess';
167			return false;
168			}
169			return true;
170			}
171			}
172
173			if (!is_writable($root->getPath())) {
174			$this->htaccessIssue = 'write_permission';
175			return false;
176			}
177
178			// create the .htaccess file
179			$result = copy(\Elgg\Application::elggDir()->getPath("install/config/htaccess.dist"), $file->getPath());
180			if (!$result) {
181			$this->htaccessIssue = 'cannot_copy';
182			return false;
183			}
184
185			// does default RewriteBase work already?
186			if (!$this->runRewriteTest($url)) {
187			//try to rewrite to guessed subdirectory
188			if ($subdir = $this->guessSubdirectory($url)) {
189			$contents = $file->getContents();
190			$contents = preg_replace("/#RewriteBase \/(\r?\n)/", "RewriteBase $subdir\$1", $contents);
191			if ($contents) {
192			$file->putContents($contents);
193			}
194			}
195			}
196
197			return true;
198			}
199
200			/**
201			* Create the status array required by the ElggInstaller
202			*
203			* @param string $url Rewrite test URL
204			*
205			* @return array
206			*/
207			protected function returnStatus($url) {
208			if ($this->rewriteTestPassed) {
209			return [
210			'severity' => 'pass',
211			'message' => _elgg_services()->translator->translate('install:check:rewrite:success'),
212			];
213			}
214
215			if ($this->serverSupportsRemoteRead == false) {
216			$msg = _elgg_services()->translator->translate('install:warning:rewrite:unknown', [$url]);
217			$msg .= elgg_view('install/js_rewrite_check', ['url' => $url]);
218
219			return [
220			'severity' => 'warning',
221			'message' => $msg,
222			];
223			}
224
225			if ($this->webserver == 'apache') {
226			$serverString = _elgg_services()->translator->translate('install:error:rewrite:apache');
227			$msg = "$serverString\n\n";
228			if (!isset($this->htaccessIssue)) {
229			$msg .= _elgg_services()->translator->translate('install:error:rewrite:allowoverride');
230			$msg .= elgg_view('install/js_rewrite_check', ['url' => $url]);
231
232			return [
233			'severity' => 'warning',
234			'message' => $msg,
235			];
236			}
237			$msg .= _elgg_services()->translator->translate("install:error:rewrite:htaccess:{$this->htaccessIssue}");
238			return [
239			'severity' => 'warning',
240			'message' => $msg,
241			];
242			}
243
244			if ($this->webserver != 'unknown') {
245			$serverString = _elgg_services()->translator->translate("install:error:rewrite:{$this->webserver}");
246			$msg = "$serverString\n\n";
247			$msg .= _elgg_services()->translator->translate("install:error:rewrite:altserver");
248			return [
249			'severity' => 'warning',
250			'message' => $msg,
251			];
252			}
253
254			return [
255			'severity' => 'warning',
256			'message' => _elgg_services()->translator->translate('install:error:rewrite:unknown'),
257			];
258			}
259			}
260

Elgg / Elgg

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engine/classes/ElggRewriteTester.php (1 issue)

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