Introduce HiddenString for Config-Values

composer.json

@@ -37,6 +37,7 @@
 		"mobiledetect/mobiledetectlib": "2.8.*",
 		"monolog/monolog": "^1.24",
 		"nikic/fast-route": "^1.3",
+		"paragonie/hidden-string": "^1.0",
 		"pear/text_languagedetect": "1.*",
 		"pragmarx/google2fa": "^5.0",
 		"pragmarx/recovery": "^0.1.0",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "67821d2270bdf8cdd24e7a047b9544e7",
+    "content-hash": "eb985236d64ed0b0fe1fc2e4ac6616e2",
     "packages": [
         {
             "name": "asika/simple-console",
@@ -1723,25 +1723,24 @@
         },
         {
             "name": "paragonie/constant_time_encoding",
-            "version": "v1.0.4",
+            "version": "v2.2.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paragonie/constant_time_encoding.git",
-                "reference": "2132f0f293d856026d7d11bd81b9f4a23a1dc1f6"
+                "reference": "55af0dc01992b4d0da7f6372e2eac097bbbaffdb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/paragonie/constant_time_encoding/zipball/2132f0f293d856026d7d11bd81b9f4a23a1dc1f6",
+                "url": "https://api.github.com/repos/paragonie/constant_time_encoding/zipball/55af0dc01992b4d0da7f6372e2eac097bbbaffdb",
-                "reference": "2132f0f293d856026d7d11bd81b9f4a23a1dc1f6",
+                "reference": "55af0dc01992b4d0da7f6372e2eac097bbbaffdb",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3|^7"
+                "php": "^7"
             },
             "require-dev": {
-                "paragonie/random_compat": "^1.4|^2",
+                "phpunit/phpunit": "^6|^7",
-                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1|^2"
-                "vimeo/psalm": "^0.3|^1"
             },
             "type": "library",
             "autoload": {
@@ -1782,7 +1781,56 @@
                 "hex2bin",
                 "rfc4648"
             ],
-            "time": "2018-04-30T17:57:16+00:00"
+            "time": "2019-01-03T20:26:31+00:00"
+        },
+        {
+            "name": "paragonie/hidden-string",
+            "version": "v1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/hidden-string.git",
+                "reference": "0bbb00be0e33b8e1d48fa79ea35cd42d3091a936"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/hidden-string/zipball/0bbb00be0e33b8e1d48fa79ea35cd42d3091a936",
+                "reference": "0bbb00be0e33b8e1d48fa79ea35cd42d3091a936",
+                "shasum": ""
+            },
+            "require": {
+                "paragonie/constant_time_encoding": "^2",
+                "paragonie/sodium_compat": "^1.6",
+                "php": "^7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6|^7",
+                "vimeo/psalm": "^1"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "ParagonIE\\HiddenString\\": "./src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MPL-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "info@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "Encapsulate strings in an object to hide them from stack traces",
+            "homepage": "https://github.com/paragonie/hidden-string",
+            "keywords": [
+                "hidden",
+                "stack trace",
+                "string"
+            ],
+            "time": "2018-05-07T20:28:06+00:00"
         },
         {
             "name": "paragonie/random_compat",
@@ -2793,12 +2841,12 @@
             "version": "v1.6.5",
             "source": {
                 "type": "git",
-                "url": "https://github.com/mikey179/vfsStream.git",
+                "url": "https://github.com/bovigo/vfsStream.git",
                 "reference": "d5fec95f541d4d71c4823bb5e30cf9b9e5b96145"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/mikey179/vfsStream/zipball/d5fec95f541d4d71c4823bb5e30cf9b9e5b96145",
+                "url": "https://api.github.com/repos/bovigo/vfsStream/zipball/d5fec95f541d4d71c4823bb5e30cf9b9e5b96145",
                 "reference": "d5fec95f541d4d71c4823bb5e30cf9b9e5b96145",
                 "shasum": ""
             },
@@ -3701,7 +3749,7 @@
                 }
             ],
             "description": "Provides the functionality to compare PHP values for equality",
-            "homepage": "http://www.github.com/sebastianbergmann/comparator",
+            "homepage": "https://github.com/sebastianbergmann/comparator",
             "keywords": [
                 "comparator",
                 "compare",
@@ -3803,7 +3851,7 @@
                 }
             ],
             "description": "Provides functionality to handle HHVM/PHP environments",
-            "homepage": "http://www.github.com/sebastianbergmann/environment",
+            "homepage": "https://github.com/sebastianbergmann/environment",
             "keywords": [
                 "Xdebug",
                 "environment",
@@ -3871,7 +3919,7 @@
                 }
             ],
             "description": "Provides the functionality to export PHP variables for visualization",
-            "homepage": "http://www.github.com/sebastianbergmann/exporter",
+            "homepage": "https://github.com/sebastianbergmann/exporter",
             "keywords": [
                 "export",
                 "exporter"
@@ -3923,7 +3971,7 @@
                 }
             ],
             "description": "Snapshotting of global state",
-            "homepage": "http://www.github.com/sebastianbergmann/global-state",
+            "homepage": "https://github.com/sebastianbergmann/global-state",
             "keywords": [
                 "global state"
             ],
@@ -4025,7 +4073,7 @@
                 }
             ],
             "description": "Provides functionality to recursively process PHP variables",
-            "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "homepage": "https://github.com/sebastianbergmann/recursion-context",
             "time": "2016-11-19T07:33:16+00:00"
         },
         {
@@ -4158,7 +4206,7 @@
                 },
                 {
                     "name": "Gert de Pagter",
-                    "email": "backendtea@gmail.com"
+                    "email": "BackEndTea@gmail.com"
                 }
             ],
             "description": "Symfony polyfill for ctype functions",

src/Core/Config/Cache/ConfigCache.php

@@ -2,6 +2,8 @@
 
 namespace Friendica\Core\Config\Cache;
 
+use ParagonIE\HiddenString\HiddenString;
+
 /**
  * The Friendica config cache for the application
  * Initial, all *.config.php files are loaded into this cache with the
@@ -15,10 +17,17 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	private $config;
 
 	/**
-	 * @param array $config    A initial config array
+	 * @var bool
 	 */
-	public function __construct(array $config = [])
+	private $hidePasswordOutput;
+
+	/**
+	 * @param array $config    A initial config array
+	 * @param bool  $hidePasswordOutput True, if cache variables should take extra care of password values
+	 */
+	public function __construct(array $config = [], $hidePasswordOutput = true)
 	{
+		$this->hidePasswordOutput = $hidePasswordOutput;
 		$this->load($config);
 	}
 
@@ -84,8 +93,12 @@ class ConfigCache implements IConfigCache, IPConfigCache
 			$this->config[$cat] = [];
 		}
 
-		$this->config[$cat][$key] = $value;
+		if ($this->hidePasswordOutput &&
-
+			$key == 'password') {
+			$this->config[$cat][$key] = new HiddenString($value);
+		} else {
+			$this->config[$cat][$key] = $value;
+		}
 		return true;
 	}
 

src/Core/Config/Configuration.php

@@ -88,7 +88,7 @@ class Configuration
 
 			if (isset($dbvalue)) {
 				$this->configCache->set($cat, $key, $dbvalue);
-				return $dbvalue;
+				unset($dbvalue);
 			}
 		}
 

src/Factory/DBFactory.php

@@ -6,6 +6,7 @@ use Friendica\Core\Config\Cache;
 use Friendica\Database;
 use Friendica\Util\Logger\VoidLogger;
 use Friendica\Util\Profiler;
+use ParagonIE\HiddenString\HiddenString;
 
 class DBFactory
 {
@@ -45,7 +46,7 @@ class DBFactory
 			} else {
 				$db_user = $server['MYSQL_USER'];
 			}
-			$db_pass = (string) $server['MYSQL_PASSWORD'];
+			$db_pass = new HiddenString((string) $server['MYSQL_PASSWORD']);
 			$db_data = $server['MYSQL_DATABASE'];
 		}
 

tests/src/Core/Config/Cache/ConfigCacheTest.php

@@ -275,4 +275,38 @@ class ConfigCacheTest extends MockedTest
 
 		$this->assertEmpty($configCache->keyDiff($diffConfig));
 	}
+
+	/**
+	 * Test the default hiding of passwords inside the cache
+	 */
+	public function testPasswordHide()
+	{
+		$configCache = new ConfigCache([
+			'database' => [
+				'password' => 'supersecure',
+				'username' => 'notsecured',
+			],
+		]);
+
+		$this->assertEquals('supersecure', $configCache->get('database', 'password'));
+		$this->assertNotEquals('supersecure', print_r($configCache->get('database', 'password'), true));
+		$this->assertEquals('notsecured', print_r($configCache->get('database', 'username'), true));
+	}
+
+	/**
+	 * Test disabling the hiding of passwords inside the cache
+	 */
+	public function testPasswordShow()
+	{
+		$configCache = new ConfigCache([
+			'database' => [
+				'password' => 'supersecure',
+				'username' => 'notsecured',
+			],
+		], false);
+
+		$this->assertEquals('supersecure', $configCache->get('database', 'password'));
+		$this->assertEquals('supersecure', print_r($configCache->get('database', 'password'), true));
+		$this->assertEquals('notsecured', print_r($configCache->get('database', 'username'), true));
+	}
 }