Update README.md

Bumps [php-imap/php-imap](https://github.com/barbushin/php-imap) from 3.0.28 to 3.0.30.
- [Release notes](https://github.com/barbushin/php-imap/releases)
- [Commits](https://github.com/barbushin/php-imap/compare/3.0.28...3.0.30)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

.gitignore

@@ -1,2 +1,3 @@
 .idea
 *.patch
+.php_cs.cache

.php_cs.dist

@@ -0,0 +1,15 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->exclude('backend-libs')
+    ->in('src')
+;
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@PSR2' => true,
+        'lowercase_constants' => true,
+        'braces' => ['position_after_functions_and_oop_constructs' => 'same']
+    ])
+    ->setFinder($finder)
+;

CHANGELOG.md

@@ -1,11 +1,53 @@
 # Change Log
-All notable changes to this project will be documented in this file.
+All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
-The format is based on [Keep a Changelog](http://keepachangelog.com/)
-and this project does not adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Changed
+- find config.php automatically in current and parent directories. Show error message if not found. 
+- use local CSS/JS instead of CDN
+- detect missing imap extension and config error
+- refactoring to simplify routing
+
+### Removed
+- JSON API (json-api.php), this feature would better fit in a separate project. 
+
+## [0.2.1] - 2018-07-01
+
+### Breaking Changes
+- added $config['locale'].  See config.sample.php - you have to set it.
+
+### Changed
+- new layout & design with more whitespace and more explanations.  
+- Show dates in local and relative format. 
+
+## [0.2.0] - 2018-06-16
+
+### Changed
+- Show list of mails and show them only on click. 
+- Removed Turbolinks to allow for simpler code in new features. Add new mail alert. 
+- Rewrote to use mostly pure php. Uses Javascript only where it’s necessary. 
+- fixed problem where only one domain is defined
+- fix: restore focus on reload
+- #33 improve button style
+- fixed bug where html in plaintext emails are interpreted as html. 
+- changed footer style
+- refactored code into multiple php files.
+- Requires PHP version  >=7.2
+- make all addresses lowercase  #30
+- fixed error when downloading email 
+
+### Added 
+- better horizontal spacing for header (from @Spegeli) and style
+- improved validation of user input
+- Added $config['prefer_plaintext'] = true; Prefer HTML or Text and removed toggle buttons.
+- Added multiple domain support #21
+- Blacklist some usernames, configurable  #27
+- copyToClipboard button #30
+- mail counter in title
+- rest api option
+
 ## [0.1.4] - 2017-04-15
 
 ### Changed

CONTRIBUTING.md

@@ -10,3 +10,15 @@ https://help.github.com/articles/fork-a-repo/
  * *batteries included/No build process:* the user should only download the repo and update the config file in order to run the app.   
  * *no database:* the application does not have it's own database. The IMAP server is the database. 
  
+ 
+ ## Standards
+ We try to follow the following standards:
+  * https://github.com/php-pds/skeleton
+  * http://keepachangelog.com
+  * 
+  
+## Do before pull request
+ * run code style fixer (https://cs.symfony.com/)
+   * `brew install php-cs-fixer`
+   * `php-cs-fixer fix`
+ 

README.md

@@ -0,0 +1,79 @@
+# disposable-mailbox
+[![Join the chat at https://gitter.im/synox/disposable-mailbox](https://badges.gitter.im/synox/disposable-mailbox.svg)](https://gitter.im/synox/disposable-mailbox?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+A **self-hosted** disposable mailbox  service (aka trash mail)  :cloud: :envelope: 
+
+**PHP is not your thing? You should try the more efficient NodeJs version:** https://github.com/synox/void-mail
+
+-----
+
+![Screenshot](docs/screenshot_example.png)
+
+
+## Features
+
+* Anonymous usage, generate random email addresses. 
+* New Mail notification. Download and delete your emails.
+* Display emails as text or html with sanitization  filter. 
+* Display emails based on one [catch-all imap mailbox](https://www.google.ch/search?q=how+to+setup+catch-all+imap+mailbox).
+* Only requires PHP  >=7.2 and [imap extension](http://php.net/manual/book.imap.php)
+
+## Usage
+
+### Requirements
+
+* webserver with php >=7.2
+* php [imap extension](http://php.net/manual/book.imap.php)
+* IMAP account and a domain with [catch-all configuration](https://www.google.ch/search?q=how+to+setup+catch-all+imap+mailbox). (all emails go to one mailbox). 
+
+### Before you start :heavy_exclamation_mark:
+
+* Subscribe to [![Join the chat at https://gitter.im/synox/disposable-mailbox](https://badges.gitter.im/synox/disposable-mailbox.svg)](https://gitter.im/synox/disposable-mailbox?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) to be notified about issues and bugfixes.  
+* This is **Beta** software, [there are still unsolved problems](https://github.com/synox/disposable-mailbox/issues). Contributions are welcome! :heart:
+* License: **GPL-3.0**. You can modify this application and run it anywhere, charge money and show advertisement. Any forks or repacked distribution must follow the [GPL-3.0 license](https://opensource.org/licenses/GPL-3.0).  
+* A link to https://github.com/synox/disposable-mailbox in the footer is appreciated.  
+
+
+
+### Installation
+
+Disposable-mailbox can be installed by copying the src directory to a webserver. 
+
+1. assure the [imap extension](http://php.net/manual/book.imap.php) is installed. The following command should not print any errors:
+
+        <?php print imap_base64("SU1BUCBleHRlbnNpb24gc2VlbXMgdG8gYmUgaW5zdGFsbGVkLiA="); ?>
+
+2. download a [release](https://github.com/synox/disposable-mailbox/releases) or clone this repository
+3. copy the files in the `src` directory to your web server (not the whole repo!).
+4. rename `config.sample.php` to `config.php` and apply the imap settings. Move `config.php` to a safe location in a *parent directory* outside the `public_html`, so it is not reachable through the browser.
+5. open it in your browser, check your php error log for messages. 
+
+
+### Build it yourself
+The src directory contains all required files. If you want to update the php dependencies, you can update them yourself.  You must have [composer](https://getcomposer.org/download/) installed. 
+
+
+Install php dependecies:
+
+    composer update
+
+### Troubleshooting
+
+* **IMAP Server has invalid certificate**: You might have to add `novalidate-cert` to the IMAP settings. See flags on http://php.net/manual/en/function.imap-open.php.
+* **Error 500, Internal error**: Check your error log file. Add to `config.php`: 
+
+    ini_set('display_errors', 1);    ini_set('display_startup_errors', 1);    error_reporting(E_ALL);
+
+## Testing on MacOs
+ * brew install php
+ * brew tap kabel/php-ext 
+ * brew install kabel/php-ext/php-imap
+ * php -S localhost:8000 -t src
+ 
+
+## Credit :thumbsup:
+
+This could not be possible without...
+
+ * https://github.com/barbushin/php-imap, https://github.com/gnugat-legacy/PronounceableWord, http://htmlpurifier.org/, 
+ * https://github.com/turbolinks/turbolinks, http://tobiasahlin.com/spinkit/

app.json

@@ -0,0 +1,5 @@
+{
+  "name": "disposable-mailbox",
+  "description": "self-hosted disposable email service (php) using catch-all and imap",
+  "repository": "https://github.com/synox/disposable-mailbox",
+}

composer.json

@@ -1,8 +1,12 @@
 {
   "require": {
-        "php-imap/php-imap": "~2.0"
+    "php-imap/php-imap": "*",
+    "php": "^7.2",
+    "gnugat/PronounceableWord": "*",
+    "ezyang/htmlpurifier": "^4.9",
+    "fightbulc/moment": "*"
   },
   "config": {
-        "vendor-dir": "src/backend-libs"
+    "vendor-dir": "src/vendor"
   }
 }

composer.lock

@@ -1,38 +1,186 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "hash": "18ba77805fd530e1972050e6de7cd151",
-    "content-hash": "357059f60b3f57be6e5f15b1df393a72",
+    "content-hash": "b72f82faf18e750705e7e6439460f9d6",
     "packages": [
         {
-            "name": "php-imap/php-imap",
-            "version": "2.0.3",
+            "name": "ezyang/htmlpurifier",
+            "version": "v4.11.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/barbushin/php-imap.git",
-                "reference": "cc1a49a3f68090db182183c59ffbc09055d59f5b"
+                "url": "https://github.com/ezyang/htmlpurifier.git",
+                "reference": "83ab08bc1af7d808a9e0fbf024f1c24bfd73c0a7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/barbushin/php-imap/zipball/cc1a49a3f68090db182183c59ffbc09055d59f5b",
-                "reference": "cc1a49a3f68090db182183c59ffbc09055d59f5b",
+                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/83ab08bc1af7d808a9e0fbf024f1c24bfd73c0a7",
+                "reference": "83ab08bc1af7d808a9e0fbf024f1c24bfd73c0a7",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.2"
+            },
+            "require-dev": {
+                "simpletest/simpletest": "dev-master#72de02a7b80c6bb8864ef9bf66d41d2f58f826bd"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "HTMLPurifier": "library/"
+                },
+                "files": [
+                    "library/HTMLPurifier.composer.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "LGPL-2.1-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Edward Z. Yang",
+                    "email": "admin@htmlpurifier.org",
+                    "homepage": "http://ezyang.com"
+                }
+            ],
+            "description": "Standards compliant HTML filter written in PHP",
+            "homepage": "http://htmlpurifier.org/",
+            "keywords": [
+                "html"
+            ],
+            "time": "2019-07-14T18:58:38+00:00"
+        },
+        {
+            "name": "fightbulc/moment",
+            "version": "1.30.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/fightbulc/moment.php.git",
+                "reference": "2f232918b63cf37699cd692ccd1926c4a547fb32"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/fightbulc/moment.php/zipball/2f232918b63cf37699cd692ccd1926c4a547fb32",
+                "reference": "2f232918b63cf37699cd692ccd1926c4a547fb32",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.0"
             },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.36 || ^5.5 || ^6.5 || ^7.5"
+            },
             "type": "library",
             "autoload": {
-                "psr-0": {
-                    "PhpImap": "src/"
+                "psr-4": {
+                    "Moment\\": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "BSD 3-Clause"
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Tino Ehrich",
+                    "role": "developer",
+                    "email": "tino@bigpun.me"
+                }
+            ],
+            "description": "Parse, validate, manipulate, and display dates in PHP w/ i18n support. Inspired by moment.js",
+            "keywords": [
+                "date",
+                "display",
+                "format",
+                "i18n",
+                "locale",
+                "manipulate",
+                "moment",
+                "parse",
+                "time",
+                "translation",
+                "validate"
+            ],
+            "time": "2019-04-18T08:27:34+00:00"
+        },
+        {
+            "name": "gnugat/pronounceableword",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/gnugat-legacy/PronounceableWord.git",
+                "reference": "fcdc0dc39775fa625040c37003727019657d001b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/gnugat-legacy/PronounceableWord/zipball/fcdc0dc39775fa625040c37003727019657d001b",
+                "reference": "fcdc0dc39775fa625040c37003727019657d001b",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.2"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "PronounceableWord_": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Loic Chardonnet"
+                }
+            ],
+            "description": "A light, customizable and simple library generating random and pronounceable words without using dictionaries or Markov chains.",
+            "homepage": "https://github.com/gnugat/PronounceableWord",
+            "keywords": [
+                "generator",
+                "pronounceable",
+                "word"
+            ],
+            "abandoned": true,
+            "time": "2012-01-08T19:36:58+00:00"
+        },
+        {
+            "name": "php-imap/php-imap",
+            "version": "3.0.30",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/barbushin/php-imap.git",
+                "reference": "15340028e27fdbe619999f4c300af2a06dd4a4f0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/barbushin/php-imap/zipball/15340028e27fdbe619999f4c300af2a06dd4a4f0",
+                "reference": "15340028e27fdbe619999f4c300af2a06dd4a4f0",
+                "shasum": ""
+            },
+            "require": {
+                "ext-iconv": "*",
+                "ext-imap": "*",
+                "ext-mbstring": "*",
+                "php": ">=5.6"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^5.7",
+                "squizlabs/php_codesniffer": "^3.4"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "PhpImap\\": "src/PhpImap"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
             ],
             "authors": [
                 {
@@ -41,14 +189,17 @@
                     "homepage": "http://linkedin.com/in/barbushin"
                 }
             ],
-            "description": "PHP class to access mailbox by POP3/IMAP/NNTP using IMAP extension",
+            "description": "Manage mailboxes, filter/get/delete emails in PHP (supports IMAP/POP3/NNTP)",
             "homepage": "https://github.com/barbushin/php-imap",
             "keywords": [
                 "imap",
                 "mail",
-                "php"
+                "mailbox",
+                "php",
+                "pop3",
+                "receive emails"
             ],
-            "time": "2015-09-16 07:40:39"
+            "time": "2019-09-07T13:44:13+00:00"
         }
     ],
     "packages-dev": [],
@@ -57,6 +208,8 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "php": "^7.2"
+    },
     "platform-dev": []
 }

readme.md

@@ -1,62 +0,0 @@
-# self-hosted disposable email service
-[![Join the chat at https://gitter.im/synox/disposable-mailbox](https://badges.gitter.im/synox/disposable-mailbox.svg)](https://gitter.im/synox/disposable-mailbox?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-
-Create your own temporary email web-service by combining 
-  * a [catch-all imap mailbox](https://www.google.ch/search?q=how+to+setup+catch-all+imap+mailbox) and 
-  * this easy to install web-application. 
-
-A random email address is created for every user and everything is updated automatically.  
-Emails can also be deleted. 
-
-
-| ![Screenshot](screenshot.png)        | 
-| ------------- | 
-
-
-## You have to know
-
-* Use [![Join the chat at https://gitter.im/synox/disposable-mailbox](https://badges.gitter.im/synox/disposable-mailbox.svg)](https://gitter.im/synox/disposable-mailbox?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) and you will be notified about issues and bugfixes.  
-* This is **Beta** software, [there are still unsolved problems](https://github.com/synox/disposable-mailbox/issues). Contributions are welcome!
-* License: **GPL-3.0**. You can modify this application and run it anywhere, charge money and show advertisement. Any forks or repacked distribution must follow the [GPL-3.0 license](https://opensource.org/licenses/GPL-3.0).  
-* A link to https://github.com/synox/disposable-mailbox in the footer is appreciated.  
-
-
-## Requirements
-
-* webserver with php >=5.3.0
-* php [imap extension](http://php.net/manual/book.imap.php)
-* IMAP account and a domain with catch-all configuration (all emails go to one mailbox). 
-
-## Installation
-
-1. assure the [imap extension](http://php.net/manual/book.imap.php) is installed. The following command should not print any errors:
-
-        <?php print imap_base64("SU1BUCBleHRlbnNpb24gc2VlbXMgdG8gYmUgaW5zdGFsbGVkLiA="); ?>
-
-2. download a [release](https://github.com/synox/disposable-mailbox/releases) or clone this repository
-3. copy the files in the `src` directory to your web server (not the whole repo!).
-4. rename `config.sample.php` to `config.php` and apply the imap settings. Move `config.php` to a safe location outside the `public_html`.
-5. edit `backend.php` and set the new path to `config.php`.
-6. open it in your browser, check your php error log for messages. 
-
-
-## Build it yourself
-The src directory contains all required files. If you want to update the php dependencies, you can update them yourself.  You must have [composer](https://getcomposer.org/download/) installed. 
-
-
-Install php dependecies:
-
-    composer install
-
-## Credit
-
-This could not be possible without...
-
- * http://angularjs.org/
- * https://github.com/barbushin/php-imap
- * https://github.com/gregjacobs/Autolinker.js/
- * http://chancejs.com/
-
-[![BrowserStack](browserstack.png)](https://www.browserstack.com/)
-
-Supported by [BrowserStack](https://www.browserstack.com/), which allows us to test projects online with any browser as a service. :-) 

src/User.php

@@ -0,0 +1,80 @@
+<?php
+
+class User {
+    public $address;
+    public $username;
+    public $domain;
+
+    public static function get_random_address(array $domains): string {
+        $wordLength = rand(3, 8);
+        $container = new PronounceableWord_DependencyInjectionContainer();
+        $generator = $container->getGenerator();
+        $word = $generator->generateWordOfGivenLength($wordLength);
+        $nr = rand(51, 91);
+        $name = $word . $nr;
+
+        $domain = $domains[array_rand($domains)];
+        return "$name@$domain";
+    }
+
+    public function isInvalid(array $config_domains): bool {
+        if (empty($this->username) || empty($this->domain)) {
+            return true;
+        } elseif (!in_array($this->domain, $config_domains)) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public static function parseDomain(string $address, array $config_blocked_usernames): User {
+        $clean_address = User::_clean_address($address);
+        $user = new User();
+        $user->username = User::_clean_username($clean_address, $config_blocked_usernames);
+        $user->domain = User::_clean_domain($clean_address);
+        $user->address = $user->username . '@' . $user->domain;
+        return $user;
+    }
+
+    public static function parseUsernameAndDomain(string $username, string $domain, $config_blocked_usernames): User {
+        $user = new User();
+        $user->username = User::_clean_username($username, $config_blocked_usernames);
+        $user->domain = User::_clean_domain($domain);
+        $user->address = $user->username . '@' . $user->domain;
+        return $user;
+    }
+
+    /**
+     * Remove illegal characters from address.
+     * @return string clean address
+     */
+    private static function _clean_address(string $address) {
+        return strtolower(filter_var($address, FILTER_SANITIZE_EMAIL));
+    }
+
+
+    /**
+     * Remove illegal characters from username and remove everything after the @-sign. You may extend it if your server supports them.
+     *
+     * @return string clean username
+     */
+    private static function _clean_username(string $address, array $config_blocked_usernames) {
+        $username = strtolower($address);
+        $username = preg_replace('/@.*$/', "", $username);   // remove part after @
+        $username = preg_replace('/[^A-Za-z0-9_.+-]/', "", $username);   // remove special characters
+
+        if (in_array($username, $config_blocked_usernames)) {
+            // Forbidden name!
+            return '';
+        }
+
+        return $username;
+    }
+
+
+    private static function _clean_domain(string $address) {
+        $username = strtolower($address);
+        $username = preg_replace('/^.*@/', "", $username);   // remove part before @
+        return preg_replace('/[^A-Za-z0-9_.+-]/', "", $username);   // remove special characters
+    }
+}

src/assets/custom.css

@@ -0,0 +1,114 @@
+
+html > body {
+    display: flex;
+    min-height: 100vh;
+    flex-direction: column;
+}
+
+#my-address {
+    margin-top: 0.5rem;
+    margin-left: 1rem;
+    color: black;
+}
+
+.my-address-block {
+    background-color: #F8F9FA;
+    padding: 0.5rem;
+    white-space: nowrap;
+    padding-left: 0;
+    margin-left: 1rem;
+    text-align: center;
+    padding-right: 0;
+}
+
+.get-new-address-col {
+    text-align: center;
+    padding: 0.5rem;
+}
+
+.email-list-item {
+    padding-left: 0;
+    padding-bottom: 0;
+}
+
+.copy-button {
+    font-size: 75%;
+    color: #808080;
+    cursor: pointer;
+    background-color: transparent;
+    border: 0;
+    border-radius: 0.25rem;
+}
+
+.copy-button:hover {
+    color: #fff;
+    background-color: #007BFF;
+}
+
+header {
+    /*background-color: #f9f9f9;*/
+    padding-bottom: 1rem;
+    padding-top: 1rem;
+}
+
+main {
+    flex: 1; /* stick footer to the bottom */
+    padding-top: 2rem;
+    padding-bottom: 2rem;
+}
+
+#language-selection {
+    width: 10rem;
+}
+
+footer {
+    padding-top: 1rem;
+    background-color: #eeeeee;
+}
+
+.open-collapse-button {
+    background-color: transparent;
+    width: 3rem;
+}
+
+.open-collapse-button > i {
+    font-size: 1.5em;
+}
+
+[aria-expanded="false"] .expand-button-closed {
+    display: block;
+}
+
+[aria-expanded="false"] .expand-button-opened {
+    display: none;
+}
+
+[aria-expanded="true"] .expand-button-closed {
+    display: none;
+}
+
+[aria-expanded="true"] .expand-button-opened {
+    display: block;
+}
+
+#new-content-avalable {
+    display: none;
+    text-align: center;
+}
+
+.email-body {
+    word-wrap: break-word;
+}
+
+.alert-fixed {
+    position: fixed;
+    top: 0px;
+    left: 0px;
+    width: 100%;
+    z-index: 9999;
+    border-radius: 0px;
+    text-align: center;
+}
+#address-box-edit {
+    margin: 1rem;
+}

src/assets/fontawesome/webfonts/fa-regular-400.svg

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+<?xml version="1.0" standalone="no"?> 
+<!--
+Font Awesome Free 5.0.13 by @fontawesome - https://fontawesome.com
+License - https://fontawesome.com/license (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
+-->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" >
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+    <glyph glyph-name="window-close"
+      unicode="&#xF410;"
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+    <glyph glyph-name="window-maximize"
+      unicode="&#xF2D0;"
+      horiz-adv-x="512" d=" M464 416H48C21.5 416 0 394.5 0 368V16C0 -10.5 21.5 -32 48 -32H464C490.5 -32 512 -10.5 512 16V368C512 394.5 490.5 416 464 416zM464 22C464 18.7 461.3 16 458 16H54C50.7 16 48 18.7 48 22V256H464V22z" />
+    <glyph glyph-name="window-minimize"
+      unicode="&#xF2D1;"
+      horiz-adv-x="512" d=" M480 -32H32C14.3 -32 0 -17.7 0 0S14.3 32 32 32H480C497.7 32 512 17.7 512 0S497.7 -32 480 -32z" />
+    <glyph glyph-name="window-restore"
+      unicode="&#xF2D2;"
+      horiz-adv-x="512" d=" M464 448H144C117.5 448 96 426.5 96 400V352H48C21.5 352 0 330.5 0 304V-16C0 -42.5 21.5 -64 48 -64H368C394.5 -64 416 -42.5 416 -16V32H464C490.5 32 512 53.5 512 80V400C512 426.5 490.5 448 464 448zM368 -16H48V192H368V-16zM464 80H416V304C416 330.5 394.5 352 368 352H144V400H464V80z" />
+  </font>
+</defs>
+</svg>

src/autolink.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Adapted from https://plugins.trac.wordpress.org/browser/sem-external-links/trunk/sem-autolink-uri.php
+ * which is MIT/GPL licenced.
+ *    Author: Denis de Bernardy & Mike Koepke
+ *    Author URI: https://www.semiologic.com
+ */
+class AutoLinkExtension {
+    public static function auto_link_text(string $string) {
+        $string = preg_replace_callback(
+            "/
+            ((?<![\"'])                                     # don't look inside quotes
+            (\b
+            (                           # protocol or www.
+                [a-z]{3,}:\/\/
+            |
+                www\.
+            )
+            (?:                         # domain
+                [a-zA-Z0-9_\-]+
+                (?:\.[a-zA-Z0-9_\-]+)*
+            |
+                localhost
+            )
+            (?:                         # port
+                 \:[0-9]+
+            )?
+            (?:                         # path
+                \/[a-z0-9:%_|~.-]*
+                (?:\/[a-z0-9:%_|~.-]*)*
+            )?
+            (?:                         # attributes
+                \?[a-z0-9:%_|~.=&#;-]*
+            )?
+            (?:                         # anchor
+                \#[a-z0-9:%_|~.=&#;-]*
+            )?
+            )
+            (?![\"']))
+            /ix",
+            function ($match) {
+                $url = $match[0];
+                $href = $url;
+
+                if (false === strpos($href, 'http')) {
+                    $href = 'http://' . $href;
+                }
+                return '<a href="' . $href . '" rel="noreferrer">' . $url . '</a>';
+            },
+            $string
+        );
+
+        return $string;
+    }
+}

src/backend-libs/autoload.php

@@ -1,7 +0,0 @@
-<?php
-
-// autoload.php @generated by Composer
-
-require_once __DIR__ . '/composer' . '/autoload_real.php';
-
-return ComposerAutoloaderInit125dddd280a32cf75b181166154246ec::getLoader();

src/backend-libs/composer/autoload_static.php

@@ -1,26 +0,0 @@
-<?php
-
-// autoload_static.php @generated by Composer
-
-namespace Composer\Autoload;
-
-class ComposerStaticInit125dddd280a32cf75b181166154246ec
-{
-    public static $prefixesPsr0 = array (
-        'P' => 
-        array (
-            'PhpImap' => 
-            array (
-                0 => __DIR__ . '/..' . '/php-imap/php-imap/src',
-            ),
-        ),
-    );
-
-    public static function getInitializer(ClassLoader $loader)
-    {
-        return \Closure::bind(function () use ($loader) {
-            $loader->prefixesPsr0 = ComposerStaticInit125dddd280a32cf75b181166154246ec::$prefixesPsr0;
-
-        }, null, ClassLoader::class);
-    }
-}

src/backend-libs/composer/installed.json

@@ -1,47 +0,0 @@
-[
-    {
-        "name": "php-imap/php-imap",
-        "version": "2.0.3",
-        "version_normalized": "2.0.3.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/barbushin/php-imap.git",
-            "reference": "cc1a49a3f68090db182183c59ffbc09055d59f5b"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/barbushin/php-imap/zipball/cc1a49a3f68090db182183c59ffbc09055d59f5b",
-            "reference": "cc1a49a3f68090db182183c59ffbc09055d59f5b",
-            "shasum": ""
-        },
-        "require": {
-            "php": ">=5.3.0"
-        },
-        "time": "2015-09-16 07:40:39",
-        "type": "library",
-        "installation-source": "dist",
-        "autoload": {
-            "psr-0": {
-                "PhpImap": "src/"
-            }
-        },
-        "notification-url": "https://packagist.org/downloads/",
-        "license": [
-            "BSD 3-Clause"
-        ],
-        "authors": [
-            {
-                "name": "Sergey Barbushin",
-                "email": "barbushin@gmail.com",
-                "homepage": "http://linkedin.com/in/barbushin"
-            }
-        ],
-        "description": "PHP class to access mailbox by POP3/IMAP/NNTP using IMAP extension",
-        "homepage": "https://github.com/barbushin/php-imap",
-        "keywords": [
-            "imap",
-            "mail",
-            "php"
-        ]
-    }
-]

src/backend-libs/php-imap/php-imap/.gitattributes

@@ -1,22 +0,0 @@
-# Auto detect text files and perform LF normalization
-* text=auto
-
-# Custom for Visual Studio
-*.cs     diff=csharp
-*.sln    merge=union
-*.csproj merge=union
-*.vbproj merge=union
-*.fsproj merge=union
-*.dbproj merge=union
-
-# Standard to msysgit
-*.doc	 diff=astextplain
-*.DOC	 diff=astextplain
-*.docx diff=astextplain
-*.DOCX diff=astextplain
-*.dot  diff=astextplain
-*.DOT  diff=astextplain
-*.pdf  diff=astextplain
-*.PDF	 diff=astextplain
-*.rtf	 diff=astextplain
-*.RTF	 diff=astextplain

src/backend-libs/php-imap/php-imap/LICENSE

@@ -1,32 +0,0 @@
-ImapMailbox
-
-Copyright (c) 2012 by Barbushin Sergey <barbushin@gmail.com>.
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials provided
-      with the distribution.
-
-    * The names of the contributors may not be used to endorse or
-      promote products derived from this software without specific
-      prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

src/backend-libs/php-imap/php-imap/README.md

@@ -1,53 +0,0 @@
-ImapMailbox is PHP class to access mailbox by POP3/IMAP/NNTP using IMAP extension
-
-### Features
-
-* Connect to mailbox by POP3/IMAP/NNTP (see [imap_open](http://php.net/imap_open))
-* Get mailbox status (see [imap_check](http://php.net/imap_check))
-* Receive emails (+attachments, +html body images)
-* Search emails by custom criteria (see [imap_search](http://php.net/imap_search))
-* Change email status (see [imap_setflag_full](http://php.net/imap_setflag_full))
-* Delete email
-
-### Installation by Composer
-
-	{
-		"require": {
-			"php-imap/php-imap": "~2.0"
-		}
-	}
-
-Or
-
-	$ composer require php-imap/php-imap ~2.0
-
-### Migration from `v1.*` to `v2.*`
-
-Just add following code in the head of your script:
-
-	use PhpImap\Mailbox as ImapMailbox;
-	use PhpImap\IncomingMail;
-	use PhpImap\IncomingMailAttachment;
-
-### [Usage example](https://github.com/barbushin/php-imap/blob/master/example/index.php)
-
-```php
-$mailbox = new PhpImap\Mailbox('{imap.gmail.com:993/imap/ssl}INBOX', 'some@gmail.com', '*********', __DIR__);
-$mails = array();
-
-$mailsIds = $mailbox->searchMailBox('ALL');
-if(!$mailsIds) {
-	die('Mailbox is empty');
-}
-
-$mailId = reset($mailsIds);
-$mail = $mailbox->getMail($mailId);
-
-var_dump($mail);
-var_dump($mail->getAttachments());
-```
-
-### Recommended
-
-* Google Chrome extension [PHP Console](https://chrome.google.com/webstore/detail/php-console/nfhmhhlpfleoednkpnnnkolmclajemef)
-* Google Chrome extension [JavaScript Errors Notifier](https://chrome.google.com/webstore/detail/javascript-errors-notifie/jafmfknfnkoekkdocjiaipcnmkklaajd)

src/backend-libs/php-imap/php-imap/composer.json

@@ -1,28 +0,0 @@
-{
-	"name": "php-imap/php-imap",
-	"description": "PHP class to access mailbox by POP3/IMAP/NNTP using IMAP extension",
-	"keywords": [
-		"PHP",
-		"IMAP",
-		"mail"
-	],
-	"homepage": "https://github.com/barbushin/php-imap",
-	"license": "BSD 3-Clause",
-	"type": "library",
-	"authors": [
-		{
-			"name": "Sergey Barbushin",
-			"homepage": "http://linkedin.com/in/barbushin",
-			"email": "barbushin@gmail.com"
-		}
-	],
-	"require": {
-		"php": ">=5.3.0"
-	},
-	"autoload": {
-		"psr-0": {
-			"PhpImap": "src/"
-		}
-	},
-	"minimum-stability": "stable"
-}

src/backend-libs/php-imap/php-imap/src/PhpImap/Mailbox.php

@@ -1,611 +0,0 @@
-<?php namespace PhpImap;
-
-use stdClass;
-
-/**
- * @see https://github.com/barbushin/php-imap
- * @author Barbushin Sergey http://linkedin.com/in/barbushin
- */
-class Mailbox {
-
-	protected $imapPath;
-	protected $imapLogin;
-	protected $imapPassword;
-	protected $imapOptions = 0;
-	protected $imapRetriesNum = 0;
-	protected $imapParams = array();
-	protected $serverEncoding;
-	protected $attachmentsDir;
-
-	public function __construct($imapPath, $login, $password, $attachmentsDir = null, $serverEncoding = 'UTF-8') {
-		$this->imapPath = $imapPath;
-		$this->imapLogin = $login;
-		$this->imapPassword = $password;
-		$this->serverEncoding = strtoupper($serverEncoding);
-		if($attachmentsDir) {
-			if(!is_dir($attachmentsDir)) {
-				throw new Exception('Directory "' . $attachmentsDir . '" not found');
-			}
-			$this->attachmentsDir = rtrim(realpath($attachmentsDir), '\\/');
-		}
-	}
-
-	/**
-	 * Set custom connection arguments of imap_open method. See http://php.net/imap_open
-	 * @param int $options
-	 * @param int $retriesNum
-	 * @param array $params
-	 */
-	public function setConnectionArgs($options = 0, $retriesNum = 0, array $params = null) {
-		$this->imapOptions = $options;
-		$this->imapRetriesNum = $retriesNum;
-		$this->imapParams = $params;
-	}
-
-	/**
-	 * Get IMAP mailbox connection stream
-	 * @param bool $forceConnection Initialize connection if it's not initialized
-	 * @return null|resource
-	 */
-	public function getImapStream($forceConnection = true) {
-		static $imapStream;
-		if($forceConnection) {
-			if($imapStream && (!is_resource($imapStream) || !imap_ping($imapStream))) {
-				$this->disconnect();
-				$imapStream = null;
-			}
-			if(!$imapStream) {
-				$imapStream = $this->initImapStream();
-			}
-		}
-		return $imapStream;
-	}
-
-	protected function initImapStream() {
-		$imapStream = @imap_open($this->imapPath, $this->imapLogin, $this->imapPassword, $this->imapOptions, $this->imapRetriesNum, $this->imapParams);
-		if(!$imapStream) {
-			throw new Exception('Connection error: ' . imap_last_error());
-		}
-		return $imapStream;
-	}
-
-	protected function disconnect() {
-		$imapStream = $this->getImapStream(false);
-		if($imapStream && is_resource($imapStream)) {
-			imap_close($imapStream, CL_EXPUNGE);
-		}
-	}
-
-	/**
-	 * Get information about the current mailbox.
-	 *
-	 * Returns the information in an object with following properties:
-	 *  Date - current system time formatted according to RFC2822
-	 *  Driver - protocol used to access this mailbox: POP3, IMAP, NNTP
-	 *  Mailbox - the mailbox name
-	 *  Nmsgs - number of mails in the mailbox
-	 *  Recent - number of recent mails in the mailbox
-	 *
-	 * @return stdClass
-	 */
-	public function checkMailbox() {
-		return imap_check($this->getImapStream());
-	}
-
-	/**
-	 * Creates a new mailbox specified by mailbox.
-	 *
-	 * @return bool
-	 */
-
-	public function createMailbox() {
-		return imap_createmailbox($this->getImapStream(), imap_utf7_encode($this->imapPath));
-	}
-
-	/**
-	 * Gets status information about the given mailbox.
-	 *
-	 * This function returns an object containing status information.
-	 * The object has the following properties: messages, recent, unseen, uidnext, and uidvalidity.
-	 *
-	 * @return stdClass if the box doesn't exist
-	 */
-
-	public function statusMailbox() {
-		return imap_status($this->getImapStream(), $this->imapPath, SA_ALL);
-	}
-
-
-	/**
-	 * Gets listing the folders
-	 *
-	 * This function returns an object containing listing the folders.
-	 * The object has the following properties: messages, recent, unseen, uidnext, and uidvalidity.
-	 *
-	 * @return array listing the folders
-	 */
-
-	public function getListingFolders() {
-		$folders = imap_list($this->getImapStream(), $this->imapPath, "*");
-		foreach ($folders as $key => $folder)
-		{
-			$folder = str_replace($this->imapPath, "", imap_utf7_decode($folder));
-			$folders[$key] = $folder;
-		}
-		return $folders;
-	}
-
-
-	/**
-	 * This function performs a search on the mailbox currently opened in the given IMAP stream.
-	 * For example, to match all unanswered mails sent by Mom, you'd use: "UNANSWERED FROM mom".
-	 * Searches appear to be case insensitive. This list of criteria is from a reading of the UW
-	 * c-client source code and may be incomplete or inaccurate (see also RFC2060, section 6.4.4).
-	 *
-	 * @param string $criteria String, delimited by spaces, in which the following keywords are allowed. Any multi-word arguments (e.g. FROM "joey smith") must be quoted. Results will match all criteria entries.
-	 *    ALL - return all mails matching the rest of the criteria
-	 *    ANSWERED - match mails with the \\ANSWERED flag set
-	 *    BCC "string" - match mails with "string" in the Bcc: field
-	 *    BEFORE "date" - match mails with Date: before "date"
-	 *    BODY "string" - match mails with "string" in the body of the mail
-	 *    CC "string" - match mails with "string" in the Cc: field
-	 *    DELETED - match deleted mails
-	 *    FLAGGED - match mails with the \\FLAGGED (sometimes referred to as Important or Urgent) flag set
-	 *    FROM "string" - match mails with "string" in the From: field
-	 *    KEYWORD "string" - match mails with "string" as a keyword
-	 *    NEW - match new mails
-	 *    OLD - match old mails
-	 *    ON "date" - match mails with Date: matching "date"
-	 *    RECENT - match mails with the \\RECENT flag set
-	 *    SEEN - match mails that have been read (the \\SEEN flag is set)
-	 *    SINCE "date" - match mails with Date: after "date"
-	 *    SUBJECT "string" - match mails with "string" in the Subject:
-	 *    TEXT "string" - match mails with text "string"
-	 *    TO "string" - match mails with "string" in the To:
-	 *    UNANSWERED - match mails that have not been answered
-	 *    UNDELETED - match mails that are not deleted
-	 *    UNFLAGGED - match mails that are not flagged
-	 *    UNKEYWORD "string" - match mails that do not have the keyword "string"
-	 *    UNSEEN - match mails which have not been read yet
-	 *
-	 * @return array Mails ids
-	 */
-	public function searchMailbox($criteria = 'ALL') {
-		$mailsIds = imap_search($this->getImapStream(), $criteria, SE_UID, $this->serverEncoding);
-		return $mailsIds ? $mailsIds : array();
-	}
-
-	/**
-	 * Save mail body.
-	 * @return bool
-	 */
-	public function saveMail($mailId, $filename = 'email.eml') {
-		return imap_savebody($this->getImapStream(), $filename, $mailId, "", FT_UID);
-	}
-
-	/**
-	 * Marks mails listed in mailId for deletion.
-	 * @return bool
-	 */
-	public function deleteMail($mailId) {
-		return imap_delete($this->getImapStream(), $mailId, FT_UID);
-	}
-
-	public function moveMail($mailId, $mailBox) {
-		return imap_mail_move($this->getImapStream(), $mailId, $mailBox, CP_UID) && $this->expungeDeletedMails();
-	}
-
-	/**
-	 * Deletes all the mails marked for deletion by imap_delete(), imap_mail_move(), or imap_setflag_full().
-	 * @return bool
-	 */
-	public function expungeDeletedMails() {
-		return imap_expunge($this->getImapStream());
-	}
-
-	/**
-	 * Add the flag \Seen to a mail.
-	 * @return bool
-	 */
-	public function markMailAsRead($mailId) {
-		return $this->setFlag(array($mailId), '\\Seen');
-	}
-
-	/**
-	 * Remove the flag \Seen from a mail.
-	 * @return bool
-	 */
-	public function markMailAsUnread($mailId) {
-		return $this->clearFlag(array($mailId), '\\Seen');
-	}
-
-	/**
-	 * Add the flag \Flagged to a mail.
-	 * @return bool
-	 */
-	public function markMailAsImportant($mailId) {
-		return $this->setFlag(array($mailId), '\\Flagged');
-	}
-
-	/**
-	 * Add the flag \Seen to a mails.
-	 * @return bool
-	 */
-	public function markMailsAsRead(array $mailId) {
-		return $this->setFlag($mailId, '\\Seen');
-	}
-
-	/**
-	 * Remove the flag \Seen from some mails.
-	 * @return bool
-	 */
-	public function markMailsAsUnread(array $mailId) {
-		return $this->clearFlag($mailId, '\\Seen');
-	}
-
-	/**
-	 * Add the flag \Flagged to some mails.
-	 * @return bool
-	 */
-	public function markMailsAsImportant(array $mailId) {
-		return $this->setFlag($mailId, '\\Flagged');
-	}
-
-	/**
-	 * Causes a store to add the specified flag to the flags set for the mails in the specified sequence.
-	 *
-	 * @param array $mailsIds
-	 * @param string $flag which you can set are \Seen, \Answered, \Flagged, \Deleted, and \Draft as defined by RFC2060.
-	 * @return bool
-	 */
-	public function setFlag(array $mailsIds, $flag) {
-		return imap_setflag_full($this->getImapStream(), implode(',', $mailsIds), $flag, ST_UID);
-	}
-
-	/**
-	 * Cause a store to delete the specified flag to the flags set for the mails in the specified sequence.
-	 *
-	 * @param array $mailsIds
-	 * @param string $flag which you can set are \Seen, \Answered, \Flagged, \Deleted, and \Draft as defined by RFC2060.
-	 * @return bool
-	 */
-	public function clearFlag(array $mailsIds, $flag) {
-		return imap_clearflag_full($this->getImapStream(), implode(',', $mailsIds), $flag, ST_UID);
-	}
-
-	/**
-	 * Fetch mail headers for listed mails ids
-	 *
-	 * Returns an array of objects describing one mail header each. The object will only define a property if it exists. The possible properties are:
-	 *  subject - the mails subject
-	 *  from - who sent it
-	 *  to - recipient
-	 *  date - when was it sent
-	 *  message_id - Mail-ID
-	 *  references - is a reference to this mail id
-	 *  in_reply_to - is a reply to this mail id
-	 *  size - size in bytes
-	 *  uid - UID the mail has in the mailbox
-	 *  msgno - mail sequence number in the mailbox
-	 *  recent - this mail is flagged as recent
-	 *  flagged - this mail is flagged
-	 *  answered - this mail is flagged as answered
-	 *  deleted - this mail is flagged for deletion
-	 *  seen - this mail is flagged as already read
-	 *  draft - this mail is flagged as being a draft
-	 *
-	 * @param array $mailsIds
-	 * @return array
-	 */
-	public function getMailsInfo(array $mailsIds) {
-		$mails = imap_fetch_overview($this->getImapStream(), implode(',', $mailsIds), FT_UID);
-		if(is_array($mails) && count($mails))
-		{
-			foreach($mails as &$mail)
-			{
-				if(isset($mail->subject)) {
-					$mail->subject = $this->decodeMimeStr($mail->subject, $this->serverEncoding);
-				}
-				if(isset($mail->from)) {
-					$mail->from = $this->decodeMimeStr($mail->from, $this->serverEncoding);
-				}
-				if(isset($mail->to)) {
-					$mail->to = $this->decodeMimeStr($mail->to, $this->serverEncoding);
-				}
-			}
-		}
-		return $mails;
-	}
-
-	/**
-	 * Get information about the current mailbox.
-	 *
-	 * Returns an object with following properties:
-	 *  Date - last change (current datetime)
-	 *  Driver - driver
-	 *  Mailbox - name of the mailbox
-	 *  Nmsgs - number of messages
-	 *  Recent - number of recent messages
-	 *  Unread - number of unread messages
-	 *  Deleted - number of deleted messages
-	 *  Size - mailbox size
-	 *
-	 * @return object Object with info | FALSE on failure
-	 */
-
-	public function getMailboxInfo() {
-		return imap_mailboxmsginfo($this->getImapStream());
-	}
-
-	/**
-	 * Gets mails ids sorted by some criteria
-	 *
-	 * Criteria can be one (and only one) of the following constants:
-	 *  SORTDATE - mail Date
-	 *  SORTARRIVAL - arrival date (default)
-	 *  SORTFROM - mailbox in first From address
-	 *  SORTSUBJECT - mail subject
-	 *  SORTTO - mailbox in first To address
-	 *  SORTCC - mailbox in first cc address
-	 *  SORTSIZE - size of mail in octets
-	 *
-	 * @param int $criteria
-	 * @param bool $reverse
-	 * @return array Mails ids
-	 */
-	public function sortMails($criteria = SORTARRIVAL, $reverse = true) {
-		return imap_sort($this->getImapStream(), $criteria, $reverse, SE_UID);
-	}
-
-	/**
-	 * Get mails count in mail box
-	 * @return int
-	 */
-	public function countMails() {
-		return imap_num_msg($this->getImapStream());
-	}
-
-	/**
-	 * Retrieve the quota settings per user
-	 * @return array - FALSE in the case of call failure
-	 */
-	protected function getQuota() {
-		return imap_get_quotaroot($this->getImapStream(), 'INBOX');
-	}
-
-	/**
-	 * Return quota limit in KB
-	 * @return int - FALSE in the case of call failure
-	 */
-	public function getQuotaLimit() {
-		$quota = $this->getQuota();
-		if(is_array($quota)) {
-			$quota = $quota['STORAGE']['limit'];
-		}
-		return $quota;
-	}
-
-	/**
-	 * Return quota usage in KB
-	 * @return int - FALSE in the case of call failure
-	 */
-	public function getQuotaUsage() {
-		$quota = $this->getQuota();
-		if(is_array($quota)) {
-			$quota = $quota['STORAGE']['usage'];
-		}
-		return $quota;
-	}
-
-    /**
-     * Get mail data
-     *
-     * @param $mailId
-     * @param bool $markAsSeen
-     * @return IncomingMail
-     */
-	public function getMail($mailId, $markAsSeen = true) {
-		$head = imap_rfc822_parse_headers(imap_fetchheader($this->getImapStream(), $mailId, FT_UID));
-
-		$mail = new IncomingMail();
-		$mail->id = $mailId;
-		$mail->date = date('Y-m-d H:i:s', isset($head->date) ? strtotime(preg_replace('/\(.*?\)/', '', $head->date)) : time());
-		$mail->subject = isset($head->subject) ? $this->decodeMimeStr($head->subject, $this->serverEncoding) : null;
-		$mail->fromName = isset($head->from[0]->personal) ? $this->decodeMimeStr($head->from[0]->personal, $this->serverEncoding) : null;
-		$mail->fromAddress = strtolower($head->from[0]->mailbox . '@' . $head->from[0]->host);
-
-		if(isset($head->to)) {
-			$toStrings = array();
-			foreach($head->to as $to) {
-				if(!empty($to->mailbox) && !empty($to->host)) {
-					$toEmail = strtolower($to->mailbox . '@' . $to->host);
-					$toName = isset($to->personal) ? $this->decodeMimeStr($to->personal, $this->serverEncoding) : null;
-					$toStrings[] = $toName ? "$toName <$toEmail>" : $toEmail;
-					$mail->to[$toEmail] = $toName;
-				}
-			}
-			$mail->toString = implode(', ', $toStrings);
-		}
-
-		if(isset($head->cc)) {
-			foreach($head->cc as $cc) {
-				$mail->cc[strtolower($cc->mailbox . '@' . $cc->host)] = isset($cc->personal) ? $this->decodeMimeStr($cc->personal, $this->serverEncoding) : null;
-			}
-		}
-
-		if(isset($head->reply_to)) {
-			foreach($head->reply_to as $replyTo) {
-				$mail->replyTo[strtolower($replyTo->mailbox . '@' . $replyTo->host)] = isset($replyTo->personal) ? $this->decodeMimeStr($replyTo->personal, $this->serverEncoding) : null;
-			}
-		}
-
-		if(isset($head->message_id)) {
-			$mail->messageId = $head->message_id;
-		}
-
-		$mailStructure = imap_fetchstructure($this->getImapStream(), $mailId, FT_UID);
-
-		if(empty($mailStructure->parts)) {
-			$this->initMailPart($mail, $mailStructure, 0, $markAsSeen);
-		}
-		else {
-			foreach($mailStructure->parts as $partNum => $partStructure) {
-				$this->initMailPart($mail, $partStructure, $partNum + 1, $markAsSeen);
-			}
-		}
-
-		return $mail;
-	}
-
-	protected function initMailPart(IncomingMail $mail, $partStructure, $partNum, $markAsSeen = true) {
-        $options = FT_UID;
-        if(!$markAsSeen) {
-            $options |= FT_PEEK;
-        }
-		$data = $partNum ? imap_fetchbody($this->getImapStream(), $mail->id, $partNum, $options) : imap_body($this->getImapStream(), $mail->id, $options);
-
-		if($partStructure->encoding == 1) {
-			$data = imap_utf8($data);
-		}
-		elseif($partStructure->encoding == 2) {
-			$data = imap_binary($data);
-		}
-		elseif($partStructure->encoding == 3) {
-			$data = preg_replace('~[^a-zA-Z0-9+=/]+~s', '', $data); // https://github.com/barbushin/php-imap/issues/88
-			$data = imap_base64($data);
-		}
-		elseif($partStructure->encoding == 4) {
-			$data = quoted_printable_decode($data);
-		}
-
-		$params = array();
-		if(!empty($partStructure->parameters)) {
-			foreach($partStructure->parameters as $param) {
-				$params[strtolower($param->attribute)] = $param->value;
-			}
-		}
-		if(!empty($partStructure->dparameters)) {
-			foreach($partStructure->dparameters as $param) {
-				$paramName = strtolower(preg_match('~^(.*?)\*~', $param->attribute, $matches) ? $matches[1] : $param->attribute);
-				if(isset($params[$paramName])) {
-					$params[$paramName] .= $param->value;
-				}
-				else {
-					$params[$paramName] = $param->value;
-				}
-			}
-		}
-
-		// attachments
-		$attachmentId = $partStructure->ifid
-			? trim($partStructure->id, " <>")
-			: (isset($params['filename']) || isset($params['name']) ? mt_rand() . mt_rand() : null);
-
-		if($attachmentId) {
-			if(empty($params['filename']) && empty($params['name'])) {
-				$fileName = $attachmentId . '.' . strtolower($partStructure->subtype);
-			}
-			else {
-				$fileName = !empty($params['filename']) ? $params['filename'] : $params['name'];
-				$fileName = $this->decodeMimeStr($fileName, $this->serverEncoding);
-				$fileName = $this->decodeRFC2231($fileName, $this->serverEncoding);
-			}
-			$attachment = new IncomingMailAttachment();
-			$attachment->id = $attachmentId;
-			$attachment->name = $fileName;
-			if($this->attachmentsDir) {
-				$replace = array(
-					'/\s/' => '_',
-					'/[^0-9a-zа-яіїє_\.]/iu' => '',
-					'/_+/' => '_',
-					'/(^_)|(_$)/' => '',
-				);
-				$fileSysName = preg_replace('~[\\\\/]~', '', $mail->id . '_' . $attachmentId . '_' . preg_replace(array_keys($replace), $replace, $fileName));
-				$attachment->filePath = $this->attachmentsDir . DIRECTORY_SEPARATOR . $fileSysName;
-				file_put_contents($attachment->filePath, $data);
-			}
-			$mail->addAttachment($attachment);
-		}
-		else {
-			if(!empty($params['charset'])) {
-				$data = $this->convertStringEncoding($data, $params['charset'], $this->serverEncoding);
-			}
-			if($partStructure->type == 0 && $data) {
-				if(strtolower($partStructure->subtype) == 'plain') {
-					$mail->textPlain .= $data;
-				}
-				else {
-					$mail->textHtml .= $data;
-				}
-			}
-			elseif($partStructure->type == 2 && $data) {
-				$mail->textPlain .= trim($data);
-			}
-		}
-		if(!empty($partStructure->parts)) {
-			foreach($partStructure->parts as $subPartNum => $subPartStructure) {
-				if($partStructure->type == 2 && $partStructure->subtype == 'RFC822') {
-					$this->initMailPart($mail, $subPartStructure, $partNum, $markAsSeen);
-				}
-				else {
-					$this->initMailPart($mail, $subPartStructure, $partNum . '.' . ($subPartNum + 1), $markAsSeen);
-				}
-			}
-		}
-	}
-
-	protected function decodeMimeStr($string, $charset = 'utf-8') {
-		$newString = '';
-		$elements = imap_mime_header_decode($string);
-		for($i = 0; $i < count($elements); $i++) {
-			if($elements[$i]->charset == 'default') {
-				$elements[$i]->charset = 'iso-8859-1';
-			}
-			$newString .= $this->convertStringEncoding($elements[$i]->text, $elements[$i]->charset, $charset);
-		}
-		return $newString;
-	}
-
-	function isUrlEncoded($string) {
-		$hasInvalidChars = preg_match( '#[^%a-zA-Z0-9\-_\.\+]#', $string );
-		$hasEscapedChars = preg_match( '#%[a-zA-Z0-9]{2}#', $string );
-		return !$hasInvalidChars && $hasEscapedChars;
-	}
-
-	protected function decodeRFC2231($string, $charset = 'utf-8') {
-		if(preg_match("/^(.*?)'.*?'(.*?)$/", $string, $matches)) {
-			$encoding = $matches[1];
-			$data = $matches[2];
-			if($this->isUrlEncoded($data)) {
-				$string = $this->convertStringEncoding(urldecode($data), $encoding, $charset);
-			}
-		}
-		return $string;
-	}
-
-	/**
-	 * Converts a string from one encoding to another.
-	 * @param string $string
-	 * @param string $fromEncoding
-	 * @param string $toEncoding
-	 * @return string Converted string if conversion was successful, or the original string if not
-	 */
-	protected function convertStringEncoding($string, $fromEncoding, $toEncoding) {
-		$convertedString = null;
-		if($string && $fromEncoding != $toEncoding) {
-			$convertedString = @iconv($fromEncoding, $toEncoding . '//IGNORE', $string);
-			if(!$convertedString && extension_loaded('mbstring')) {
-				$convertedString = @mb_convert_encoding($string, $toEncoding, $fromEncoding);
-			}
-		}
-		return $convertedString ?: $string;
-	}
-
-	public function __destruct() {
-		$this->disconnect();
-	}
-}
-
-class Exception extends \Exception {
-
-}

src/backend.php

@@ -1,168 +0,0 @@
-<?php
-# set the new path of config.php (must be in a safe location outside the `public_html`)
-require_once '../../config.php';
-
-# load php dependencies:
-require_once './backend-libs/autoload.php';
-
-$mailbox = new PhpImap\Mailbox($config['imap']['url'],
-    $config['imap']['username'],
-    $config['imap']['password']);
-
-/**
- * print error and stop program.
- * @param $status integer http status
- * @param $text string error text
- */
-function error($status, $text) {
-    @http_response_code($status);
-    @print("{\"error\": \"$text\"}");
-    die();
-}
-
-/**
- * print all mails for the given $user.
- * @param $username string username
- * @param $address string email address
- */
-function print_emails($username, $address) {
-    global $mailbox;
-
-    // Search for mails with the recipient $address in TO or CC.
-    $mailsIdsTo = imap_sort($mailbox->getImapStream(), SORTARRIVAL, true, SE_UID, 'TO "' . $address . '"');
-    $mailsIdsCc = imap_sort($mailbox->getImapStream(), SORTARRIVAL, true, SE_UID, 'CC "' . $address . '"');
-    $mail_ids = array_merge($mailsIdsTo, $mailsIdsCc);
-
-    $emails = _load_emails($mail_ids, $address);
-    header('Content-type: application/json');
-    print(json_encode(array("mails" => $emails, 'username' => $username, 'address' => $address)));
-}
-
-
-/**
- * deletes emails by id and username. The $address must match the recipient in the email.
- *
- * @param $mailid integer imap email id
- * @param $address string email address
- * @internal param the $username matching username
- */
-function delete_email($mailid, $address) {
-    global $mailbox;
-
-    if (_load_one_email($mailid, $address) !== null) {
-        $mailbox->deleteMail($mailid);
-        $mailbox->expungeDeletedMails();
-        header('Content-type: application/json');
-        print(json_encode(array("success" => true)));
-    } else {
-        error(404, 'delete error: invalid username/mailid combination');
-    }
-}
-
-/**
- * download email by id and username. The $address must match the recipient in the email.
- *
- * @param $mailid integer imap email id
- * @param $address string email address
- * @internal param the $username matching username
- */
-
-function download_email($mailid, $address) {
-    global $mailbox;
-
-    if (_load_one_email($mailid, $address) !== null) {
-        header("Content-Type: message/rfc822; charset=utf-8");
-        header("Content-Disposition: attachment; filename=\"$address-$mailid.eml\"");
-
-        $headers = imap_fetchheader($mailbox->getImapStream(), $mailid, FT_UID);
-        $body = imap_body($mailbox->getImapStream(), $mailid, FT_UID);
-        print ($headers . "\n" . $body);
-    } else {
-        error(404, 'download error: invalid username/mailid combination');
-    }
-}
-
-/**
- * Load exactly one email, the $address in TO or CC has to match.
- * @param $mailid integer
- * @param $address String address
- * @return email or null
- */
-function _load_one_email($mailid, $address) {
-    // in order to avoid https://www.owasp.org/index.php/Top_10_2013-A4-Insecure_Direct_Object_References
-    // the recipient in the email has to match the $address.
-    $emails = _load_emails(array($mailid), $address);
-    return count($emails) === 1 ? $emails[0] : null;
-}
-
-/**
- * Load emails using the $mail_ids, the mails have to match the $address in TO or CC.
- * @param $mail_ids array of integer ids
- * @param $address String address
- * @return array of emails
- */
-function _load_emails($mail_ids, $address) {
-    global $mailbox;
-
-    $emails = array();
-    foreach ($mail_ids as $id) {
-        $mail = $mailbox->getMail($id);
-        // imap_search also returns partials matches. The mails have to be filtered again:
-        if (array_key_exists($address, $mail->to) || array_key_exists($address, $mail->cc)) {
-            $emails[] = $mail;
-        }
-    }
-    return $emails;
-}
-
-/**
- * Remove illegal characters from username and remove everything after the @-sign. You may extend it if your server supports them.
- * @param $username
- * @return string clean username
- */
-function _clean_username($username) {
-    $username = strtolower($username);
-    $username = preg_replace('/@.*$/', "", $username);   // remove part after @
-    return preg_replace('/[^A-Za-z0-9_.+-]/', "", $username);   // remove special characters
-}
-
-/**
- * deletes messages older than X days.
- */
-function delete_old_messages() {
-    global $mailbox, $config;
-
-    $ids = $mailbox->searchMailbox('BEFORE ' . date('d-M-Y', strtotime($config['delete_messages_older_than'])));
-    foreach ($ids as $id) {
-        $mailbox->deleteMail($id);
-    }
-    $mailbox->expungeDeletedMails();
-}
-
-// Never cache requests:
-header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
-header("Cache-Control: post-check=0, pre-check=0", false);
-header("Pragma: no-cache");
-
-if (isset($_GET['username'])) {
-    // perform common validation:
-    $username = _clean_username($_GET['username']);
-    if (strlen($username) === 0) {
-        error(400, 'invalid username');
-    }
-    $address = $username . "@" . $config['mailHostname'];
-
-    // simple router:
-    if (isset($_GET['download_email_id'])) {
-        download_email($_GET['download_email_id'], $address);
-    } else if (isset($_GET['delete_email_id'])) {
-        delete_email($_GET['delete_email_id'], $address);
-    } else {
-        print_emails($username, $address);
-    }
-} else {
-    error(400, 'invalid action');
-}
-
-// run on every request
-delete_old_messages();

src/client-libs/angular-stickyfill-0.1.0/angular-stickyfill.css

@@ -1,12 +0,0 @@
-[ec-stickyfill] {
-    position: -webkit-sticky;
-    position: sticky;
-    top: 0px;
-}
-
-[ec-stickyfill]:before,
-[ec-stickyfill]:after {
-    content: '';
-    display: table;
-}
-

src/client-libs/angular-stickyfill-0.1.0/angular-stickyfill.js

@@ -1,8 +0,0 @@
-/**
- * An Angular directive for stickyfill (position sticky polyfill)
- *
- * @version v0.1.0 - 2016-08-31
- * @author Corey Wilson <corey@eastcodes.com>
- * @license Unlicense, http://unlicense.org/
- */
-!function(e,i){"use strict";if("function"==typeof define&&define.amd)define(["angular","stickyfill"],i);else{if("undefined"==typeof module||"object"!=typeof module.exports)return i(e.angular,e.Stickyfill);module.exports=i(require("angular"),require("stickyfill"))}}(window,function(e,i){"use strict";function t(){function e(e,t,n){if("object"!=typeof i)throw new Error("stickyfill.js not loaded");i.add(t[0]),e.$on("$destroy",function(){i.remove(t[0])})}var t={link:e,restrict:"A"};return t}if("function"==typeof i)var i=i();var n="ec.stickyfill";return e.module(n,[]).directive("ecStickyfill",t),n});

src/client-libs/index.js

@@ -1,137 +0,0 @@
-// config:
-var reload_interval_ms = 10000;
-var backend_url = './backend.php';
-
-function generateRandomUsername() {
-    var username = "";
-    if (chance.bool()) {
-        username += chance.first();
-        if (chance.bool()) {
-            username += chance.last();
-        }
-    } else {
-        username += chance.word({syllables: 3})
-    }
-    if (chance.bool()) {
-        username += chance.integer({min: 30, max: 99});
-    }
-    return username.toLowerCase();
-}
-
-var app = angular.module('app', ["ngSanitize"]);
-
-// http://stackoverflow.com/a/20033625/79461
-app.filter("nl2br", function () {
-        return function (data) {
-            if (!data) return data;
-            return data.replace(/\r?\n/g, '<br/>');
-        }
-    }
-);
-
-// http://stackoverflow.com/a/20033625/79461
-app.filter("autolink", function () {
-    return function (data) {
-        return Autolinker.link(data, {truncate: {length: 50, location: 'middle', newWindow: true}});
-    }
-});
-
-app.controller('MailboxController', ["$interval", "$http", "$log", function ($interval, $http, $log) {
-    var self = this;
-
-    self.backend_url = backend_url;
-
-    self.updateUsername = function (username) {
-        username = username.replace(/[@].*$/, ''); // remove part after "@"
-        if (self.username !== username) {
-            // changed
-            self.username = username;
-            hasher.setHash(self.username);
-
-            if (self.username.length > 0) {
-                self.address = self.username; // use username until real address has been loaded
-                self.updateMails();
-            } else {
-                self.randomize();
-            }
-        }
-        self.inputFieldUsername = self.username;
-    };
-
-
-    self.randomize = function () {
-        self.updateUsername(generateRandomUsername());
-    };
-
-
-    self.onHashChange = function (hash) {
-        self.updateUsername(hash);
-    };
-
-    self.$onInit = function () {
-        hasher.changed.add(self.onHashChange.bind(self));
-        hasher.initialized.add(self.onHashChange.bind(self)); //add initialized listener (to grab initial value in case it is already set)
-        hasher.init(); //initialize hasher (start listening for history changes)
-
-        $interval(self.updateMails, reload_interval_ms);
-    };
-
-    self.updateMails = function () {
-        if (self.username) {
-            self.loadEmailsAsync(self.username);
-        }
-    };
-
-    self.loadEmailsAsync = function (username) {
-        $http.get(backend_url, {params: {username: username}})
-            .then(function successCallback(response) {
-                if (response.data.mails) {
-                    self.error = null;
-                    self.mails = response.data.mails;
-                    self.address = response.data.address;
-                    self.username = response.data.username;
-                    if (self.inputFieldUsername === self.username) {
-                        self.inputFieldUsername = self.address;
-                    }
-                } else {
-                    self.error = {
-                        title: "JSON_ERROR",
-                        desc: "The JSON from the response can not be read.",
-                        detail: response
-                    };
-                    $log.error(response);
-                }
-            }, function errorCallback(response) {
-                $log.error(response, this);
-                self.error = {
-                    title: "HTTP_ERROR",
-                    desc: "There is a problem with loading the data. (HTTP_ERROR).",
-                    detail: response
-                };
-            });
-    };
-
-    self.deleteMail = function (mail, index) {
-        // instantly remove from frontend.
-        self.mails.splice(index, 1);
-
-        // remove on backend.
-        var firstTo = Object.keys(mail.to)[0];
-        $http.get(backend_url, {params: {username: firstTo, delete_email_id: mail.id}})
-            .then(
-                function successCallback(response) {
-                    self.updateMails();
-                },
-                function errorCallback(response) {
-                    $log.error(response, this);
-                    self.error = {
-                        title: "HTTP_ERROR",
-                        desc: "There is a problem with deleting the mail. (HTTP_ERROR).",
-                        detail: response
-                    };
-                });
-    };
-
-    // Initial load
-    self.updateMails()
-}]);

src/client-libs/style.css

@@ -1,59 +0,0 @@
-
-html > body {
-    /* override bootstrap background */
-    background: #f9f9f9;
-}
-
-footer p {
-    margin-top: 50px;
-    text-align: center;
-}
-
-.email-table {
-    margin-top: 20px;
-}
-
-div.min-height {
-    min-height: 400px;
-}
-
-header {
-    background-color: #D9E2E9;
-    /* leave some space on top  */
-    padding-top: 5px;
-}
-
-#openRandomButton {
-    /* center vertically */
-    margin-top: 6px;
-}
-
-.email-table > .email {
-    border-top: 5px solid #7C96AB;
-
-    /* idea: card shadow arround:
-     see https://blog.alexdevero.com/mastering-card-design-with-bootstrap-4/
-    box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
-    */
-}
-
-.header-shadow {
-    box-shadow: 0 2px 2px rgba(182, 182, 182, 0.75);
-}
-
-.sticky-header {
-    top: 0;
-    z-index: 1000;
-    background-color: white;
-}
-
-
-.waiting-screen {
-    padding: 40px 15px;
-    text-align: center;
-}
-
-div.min-height {
-    min-height: 400px;
-}
-

src/config.sample.php

@@ -3,22 +3,37 @@
 // set your time zone:
 date_default_timezone_set('Europe/Paris');
 
-// enable while testing:
-error_reporting(E_ALL);
-// enable in production:
-// error_reporting(0);
+// set locale (see supported locales: https://github.com/fightbulc/moment.php#switch-locale)
+$config['locale'] = 'en_US';
+
+
+// enable in production:
+error_reporting(0);
+
+// enable while testing:
+//ini_set('display_errors', 1);
+//ini_set('display_startup_errors', 1);
+//error_reporting(E_ALL);
 
-// configure this option if you want to allow requests from clients from other domains:
-// see https://en.wikipedia.org/wiki/Cross-origin_resource_sharing
-// header("Access-Control-Allow-Origin: *");
 
 // Change IMAP settings (check SSL flags on http://php.net/manual/en/function.imap-open.php)
-$config['imap']['url'] = '{example.com/imap/ssl}INBOX';
-$config['imap']['username'] = "test";
-$config['imap']['password'] = "test";
+$config['imap']['url'] = '{imap.example.com:993/imap/ssl}INBOX';
+$config['imap']['username'] = "myuser";
+$config['imap']['password'] = "mypassword";
 
-// email domain, usually different from imap hostname:
-$config['mailHostname'] = "example.com";
+// For gmail you can use '{imap.gmail.com:993/imap/ssl}INBOX'
+// and follow the troubleshooting at:
+// https://stackoverflow.com/a/25238515/79461
+
+// email domains, usually different from imap hostname:
+$config['domains'] = array('mydomain.com', 'example.com');
 
 // When to delete old messages?
 $config['delete_messages_older_than'] = '30 days ago';
+
+
+// Mails to those usernames can not be accessed:
+$config['blocked_usernames'] = array('root', 'admin', 'administrator', 'hostmaster', 'postmaster', 'webmaster');
+
+// Mails are usually show as Text and only if not available as HTML. You can turn this around to prefer HTML over text.
+$config['prefer_plaintext'] = true;

src/config_helper.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * searches for a config-file in the current and parent directories until found.
+ * @return path to found config file, or FALSE otherwise.
+ */
+function find_config($filename='config.php') {
+    // Count the deph of the current directory, so we know how far we can go up.
+    $path_length = substr_count(getcwd(), DIRECTORY_SEPARATOR)
+        + 1; // also search the current directory
+
+    $dir = '.'; // updated in each loop
+    for ($i=0; $i<$path_length;$i++) {
+        $config_filename = $dir . DIRECTORY_SEPARATOR . $filename;
+        if (file_exists($config_filename)) {
+            return $config_filename;
+        } else {
+            $dir = '../' . $dir;
+        }
+    }
+    return false;
+}
+
+/**
+ * searches and loads the config file. Prints an error if not found.
+ */
+function load_config() {
+    global $config;
+    $file = find_config();
+    if ($file !== false) {
+        require_once($file);
+        if (!isset($config) || !is_array($config)) {
+            die('ERROR: Config file is invalid. Please see the installation instructions in the README.md');
+        }
+    } else {
+        die('ERROR: Config file not found. Please see the installation instructions in the README.md');
+    }
+}

src/controller.php

@@ -0,0 +1,156 @@
+<?php
+
+require_once './imap_client.php';
+
+function render_error($status, $msg) {
+    @http_response_code($status);
+    die("{'result': 'error', 'error': '$msg'}");
+}
+
+class DisplayEmailsController {
+    public static function matches() {
+        return !isset($_GET['action']) && !empty($_SERVER['QUERY_STRING'] ?? '');
+    }
+
+    public static function invoke(ImapClient $imapClient, array $config) {
+        $address = $_SERVER['QUERY_STRING'] ?? '';
+
+        $user = User::parseDomain($address, $config['blocked_usernames']);
+        if ($user->isInvalid($config['domains'])) {
+            RedirectToRandomAddressController::invoke($imapClient, $config);
+            return;
+        }
+
+        $emails = $imapClient->get_emails($user);
+
+        DisplayEmailsController::render($emails, $config, $user);
+    }
+
+    public static function render($emails, $config, $user) {
+        // variables that have to be defined here for frontend template: $emails, $config
+        require "frontend.template.php";
+    }
+}
+
+class RedirectToAddressController {
+    public static function matches() {
+        return ($_GET['action'] ?? null) === "redirect"
+            && isset($_POST['username'])
+            && isset($_POST['domain']);
+    }
+
+    public static function invoke(ImapClient $imapClient, array $config) {
+        $user = User::parseUsernameAndDomain($_POST['username'], $_POST['domain'], $config['blocked_usernames']);
+        RedirectToAddressController::render($user->username . "@" . $user->domain);
+    }
+
+    public static function render($address) {
+        header("location: ?$address");
+    }
+}
+
+class RedirectToRandomAddressController {
+    public static function matches() {
+        return ($_GET['action'] ?? null) === 'random';
+    }
+
+    public static function invoke(ImapClient $imapClient, array $config) {
+        $address = User::get_random_address($config{'domains'});
+        RedirectToAddressController::render($address);
+    }
+}
+
+class HasNewMessagesControllerJson {
+    public static function matches() {
+        return ($_GET['action'] ?? null) === "has_new_messages"
+            && isset($_GET['email_ids'])
+            && isset($_GET['address']);
+    }
+
+
+    public static function invoke(ImapClient $imapClient, array $config) {
+        $email_ids = $_GET['email_ids'];
+        $address = $_GET['address'];
+
+        $user = User::parseDomain($address, $config['blocked_usernames']);
+        if ($user->isInvalid($config['domains'])) {
+            render_error(400, "invalid email address");
+        }
+
+        $emails = $imapClient->get_emails($user);
+        $knownMailIds = explode('|', $email_ids);
+        $newMailIds = array_map(function ($mail) {
+            return $mail->id;
+        }, $emails);
+
+        $onlyNewMailIds = array_diff($newMailIds, $knownMailIds);
+
+        HasNewMessagesControllerJson::render(count($onlyNewMailIds));
+    }
+
+    public static function render($counter) {
+        header('Content-Type: application/json');
+        print json_encode($counter);
+    }
+}
+
+class DownloadEmailController {
+    public static function matches() {
+        return ($_GET['action'] ?? null) === "download_email"
+            && isset($_GET['email_id'])
+            && isset($_GET['address']);
+    }
+
+
+    public static function invoke(ImapClient $imapClient, array $config) {
+        $email_id = $_GET['email_id'];
+        $address = $_GET['address'];
+
+        $user = User::parseDomain($address, $config['blocked_usernames']);
+        if ($user->isInvalid($config['domains'])) {
+            RedirectToRandomAddressController::invoke($imapClient, $config);
+            return;
+        }
+
+        $download_email_id = filter_var($email_id, FILTER_SANITIZE_NUMBER_INT);
+        $full_email = $imapClient->load_one_email_fully($download_email_id, $user);
+        if ($full_email !== null) {
+            $filename = $user->address . "-" . $download_email_id . ".eml";
+            DownloadEmailController::renderDownloadEmailAsRfc822($full_email, $filename);
+        } else {
+            render_error(404, 'download error: invalid username/mailid combination');
+        }
+    }
+
+    public static function renderDownloadEmailAsRfc822($full_email, $filename) {
+        header("Content-Type: message/rfc822; charset=utf-8");
+        header("Content-Disposition: attachment; filename=\"$filename\"");
+        print $full_email;
+    }
+}
+
+class DeleteEmailController {
+    public static function matches() {
+        return ($_GET['action'] ?? null) === "delete_email"
+            && isset($_GET['email_id'])
+            && isset($_GET['address']);
+    }
+
+    public static function invoke(ImapClient $imapClient, array $config) {
+        $email_id = $_GET['email_id'];
+        $address = $_GET['address'];
+
+        $user = User::parseDomain($address, $config['blocked_usernames']);
+        if ($user->isInvalid($config['domains'])) {
+            RedirectToRandomAddressController::invoke($imapClient, $config);
+            return;
+        }
+
+        $delete_email_id = filter_var($email_id, FILTER_SANITIZE_NUMBER_INT);
+        if ($imapClient->delete_email($delete_email_id, $user)) {
+            RedirectToAddressController::render($address);
+        } else {
+            render_error(404, 'delete error: invalid username/mailid combination');
+        }
+    }
+}

src/frontend.template.php

@@ -0,0 +1,366 @@
+<?php
+/*
+input:
+
+User $user - User object
+array $config - config array
+array $emails - array of emails
+*/
+
+require_once './autolink.php';
+
+// Load HTML Purifier
+$purifier_config = HTMLPurifier_Config::createDefault();
+$purifier_config->set('HTML.Nofollow', true);
+$purifier_config->set('HTML.ForbiddenElements', array("img"));
+$purifier = new HTMLPurifier($purifier_config);
+
+\Moment\Moment::setLocale($config['locale']);
+
+$mailIds = array_map(function ($mail) {
+    return $mail->id;
+}, $emails);
+$mailIdsJoinedString = filter_var(join('|', $mailIds), FILTER_SANITIZE_SPECIAL_CHARS);
+
+// define bigger renderings here to keep the php sections within the html short.
+function niceDate($date) {
+    $m = new \Moment\Moment($date, date_default_timezone_get());
+    return $m->calendar();
+}
+
+function printMessageBody($email, $purifier) {
+    global $config;
+
+    // To avoid showing empty mails, first purify the html and plaintext
+    // before checking if they are empty.
+    $safeHtml = $purifier->purify($email->textHtml);
+
+    $safeText = htmlspecialchars($email->textPlain);
+    $safeText = nl2br($safeText);
+    $safeText = \AutoLinkExtension::auto_link_text($safeText);
+
+    $hasHtml = strlen(trim($safeHtml)) > 0;
+    $hasText = strlen(trim($safeText)) > 0;
+
+    if ($config['prefer_plaintext']) {
+        if ($hasText) {
+            echo $safeText;
+        } else {
+            echo $safeHtml;
+        }
+    } else {
+        if ($hasHtml) {
+            echo $safeHtml;
+        } else {
+            echo $safeText;
+        }
+    }
+}
+
+?>
+
+
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Bootstrap CSS -->
+    <link rel="stylesheet" href="assets/bootstrap/4.1.1/bootstrap.min.css"
+          integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB"
+          crossorigin="anonymous">
+    <link rel="stylesheet" href="assets/fontawesome/v5.0.13/all.css"
+          integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp"
+          crossorigin="anonymous">
+    <title><?php
+        echo $emails ? "(" . count($emails) . ") " : "";
+        echo $user->address ?></title>
+    <link rel="stylesheet" href="assets/spinner.css">
+    <link rel="stylesheet" href="assets/custom.css">
+
+    <script>
+        var mailCount = <?php echo count($emails)?>;
+        setInterval(function () {
+            var r = new XMLHttpRequest();
+            r.open("GET", "?action=has_new_messages&address=<?php echo $user->address?>&email_ids=<?php echo $mailIdsJoinedString?>", true);
+            r.onreadystatechange = function () {
+                if (r.readyState != 4 || r.status != 200) return;
+                if (r.responseText > 0) {
+                    console.log("There are", r.responseText, "new mails.");
+                    document.getElementById("new-content-avalable").style.display = 'block';
+
+                    // If there are no emails displayed, we can reload the page without losing any state.
+                    if (mailCount === 0) {
+                        location.reload();
+                    }
+                }
+            };
+            r.send();
+
+        }, 15000);
+
+    </script>
+
+</head>
+<body>
+
+
+<div id="new-content-avalable">
+    <div class="alert alert-info alert-fixed" role="alert">
+        <strong>New emails</strong> have arrived.
+
+        <button type="button" class="btn btn-outline-secondary" onclick="location.reload()">
+            <i class="fas fa-sync"></i>
+            Reload!
+        </button>
+
+    </div>
+    <!-- move the rest of the page a bit down to show all content -->
+    <div style="height: 3rem">&nbsp;</div>
+</div>
+
+<header>
+    <div class="container">
+        <p class="lead ">
+            Your disposable mailbox is ready.
+        </p>
+        <div class="row" id="address-box-normal">
+
+            <div class="col my-address-block">
+                <span id="my-address"><?php echo $user->address ?></span>&nbsp;<button class="copy-button" data-clipboard-target="#my-address">Copy</button>
+            </div>
+
+
+            <div class="col get-new-address-col">
+                <button type="button" class="btn btn-outline-dark"
+                        data-toggle="collapse" title="choose your own address"
+                        data-target=".change-address-toggle"
+                        aria-controls="address-box-normal address-box-edit" aria-expanded="false">
+                    <i class="fas fa-magic"></i> Change address
+                </button>
+            </div>
+        </div>
+
+
+        <form class="collapse change-address-toggle" id="address-box-edit" action="?action=redirect" method="post">
+            <div class="card">
+                <div class="card-body">
+                    <p>
+                        <a href="?action=random" role="button" class="btn btn-dark">
+                            <i class="fa fa-random"></i>
+                            Open random mailbox
+                        </a>
+                    </p>
+
+
+                    or create your own address:
+                    <div class="form-row align-items-center">
+                        <div class="col-sm">
+                            <label class="sr-only" for="inlineFormInputName">username</label>
+                            <input name="username" type="text" class="form-control" id="inlineFormInputName"
+                                   placeholder="username"
+                                   value="<?php echo $user->username ?>">
+                        </div>
+                        <div class="col-sm-auto my-1">
+                            <label class="sr-only" for="inlineFormInputGroupUsername">Domain</label>
+                            <div class="input-group">
+                                <div class="input-group-prepend">
+                                    <div class="input-group-text">@</div>
+                                </div>
+
+                                <select class="custom-select" id="inlineFormInputGroupUsername" name="domain">
+                                    <?php
+                                    foreach ($config['domains'] as $aDomain) {
+                                        $selected = $aDomain === $user->domain ? ' selected ' : '';
+                                        print "<option value='$aDomain' $selected>$aDomain</option>";
+                                    }
+                                    ?>
+                                </select>
+
+
+                            </div>
+                        </div>
+                        <div class="col-auto my-1">
+                            <button type="submit" class="btn btn-primary">Open mailbox</button>
+                        </div>
+                    </div>
+
+                </div>
+            </div>
+        </form>
+    </div>
+</header>
+
+<main>
+    <div class="container">
+
+        <div id="email-list" class="list-group">
+
+            <?php
+            foreach ($emails as $email) {
+                $safe_email_id = filter_var($email->id, FILTER_VALIDATE_INT); ?>
+
+                <a class="list-group-item list-group-item-action email-list-item" data-toggle="collapse"
+                   href="#mail-box-<?php echo $email->id ?>"
+                   role="button"
+                   aria-expanded="false" aria-controls="mail-box-<?php echo $email->id ?>">
+
+                    <div class="media">
+                        <button class="btn btn-white open-collapse-button">
+                            <i class="fas fa-caret-right expand-button-closed"></i>
+                            <i class="fas fa-caret-down expand-button-opened"></i>
+                        </button>
+
+
+                        <div class="media-body">
+                            <h6 class="list-group-item-heading"><?php echo filter_var($email->fromName, FILTER_SANITIZE_SPECIAL_CHARS) ?>
+                                <span class="text-muted"><?php echo filter_var($email->fromAddress, FILTER_SANITIZE_SPECIAL_CHARS) ?></span>
+                                <small class="float-right"
+                                       title="<?php echo $email->date ?>"><?php echo niceDate($email->date) ?></small>
+                            </h6>
+                            <p class="list-group-item-text text-truncate" style="width: 75%">
+                                <?php echo filter_var($email->subject, FILTER_SANITIZE_SPECIAL_CHARS); ?>
+                            </p>
+                        </div>
+                    </div>
+                </a>
+
+
+                <div id="mail-box-<?php echo $email->id ?>" role="tabpanel" aria-labelledby="headingCollapse1"
+                     class="card-collapse collapse"
+                     aria-expanded="true">
+                    <div class="card-body">
+                        <div class="card-block email-body">
+                            <div class="float-right primary">
+                                <a class="btn btn-outline-primary btn-sm" download="true"
+                                   role="button"
+                                   href="<?php echo "?action=download_email&email_id=$safe_email_id&address=$user->address" ?>">
+                                    Download
+                                </a>
+
+                                <a class="btn btn-outline-danger btn-sm"
+                                   role="button"
+                                   href="<?php echo "?action=delete_email&email_id=$safe_email_id&address=$user->address" ?>">
+                                    Delete
+                                </a>
+                            </div>
+                             <?php printMessageBody($email, $purifier); ?>
+
+                        </div>
+                    </div>
+                </div>
+            <?php
+            } ?>
+
+            <?php
+            if (empty($emails)) {
+                ?>
+                <div id="empty-mailbox">
+                    <p>The mailbox is empty. Checking for new emails automatically. </p>
+                    <div class="spinner">
+                        <div class="rect1"></div>
+                        <div class="rect2"></div>
+                        <div class="rect3"></div>
+                        <div class="rect4"></div>
+                        <div class="rect5"></div>
+                    </div>
+                </div>
+            <?php
+            } ?>
+        </div>
+    </div>
+</main>
+
+<footer>
+    <div class="container">
+
+
+<!--                <select id="language-selection" class="custom-select" title="Language">-->
+<!--                    <option selected>English</option>-->
+<!--                    <option value="1">Deutsch</option>-->
+<!--                    <option value="2">Two</option>-->
+<!--                    <option value="3">Three</option>-->
+<!--                </select>-->
+<!--                <br>-->
+
+        <small class="text-justify quick-summary">
+            This is a disposable mailbox service. Whoever knows your username, can read your emails.
+            Emails will be deleted after 30 days.
+            <a data-toggle="collapse" href="#about"
+               aria-expanded="false"
+               aria-controls="about">
+                Show Details
+            </a>
+        </small>
+        <div class="card card-body collapse" id="about" style="max-width: 40rem">
+
+            <p class="text-justify">This disposable mailbox keeps your main mailbox clean from spam.</p>
+
+            <p class="text-justify">Just choose an address and use it on websites you don't trust and
+                don't
+                want to use
+                your
+                main email address.
+                Once you are done, you can just forget about the mailbox. All the spam stays here and does
+                not
+                fill up
+                your
+                main mailbox.
+            </p>
+
+            <p class="text-justify">
+                You select the address you want to use and received emails will be displayed
+                automatically.
+                There is no registration and no passwords. If you know the address, you can read the
+                emails.
+                <strong>Basically, all emails are public. So don't use it for sensitive data.</strong>
+
+
+            </p>
+        </div>
+
+        <p>
+            <small>Powered by
+                <a
+                        href="https://github.com/synox/disposable-mailbox"><strong>synox/disposable-mailbox</strong></a>
+            </small>
+        </p>
+    </div>
+</footer>
+
+
+<!-- jQuery first, then Popper.js, then Bootstrap JS -->
+<script src="assets/jquery/jquery-3.3.1.slim.min.js"
+        integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
+        crossorigin="anonymous"></script>
+<script src="assets/popper.js/1.14.3/umd/popper.min.js"
+        integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
+        crossorigin="anonymous"></script>
+<script src="assets/bootstrap/4.1.1/bootstrap.min.js"
+        integrity="sha384-smHYKdLADwkXOn1EmN1qk/HfnUcbVRZyYmZ4qpPea6sjB/pTJ0euyQp0Mk8ck+5T"
+        crossorigin="anonymous"></script>
+<script src="assets/clipboard.js/clipboard.min.js"
+        integrity="sha384-8CYhPwYlLELodlcQV713V9ZikA3DlCVaXFDpjHfP8Z36gpddf/Vrt47XmKDsCttu"
+        crossorigin="anonymous"></script>
+
+<script>
+    clipboard = new ClipboardJS('[data-clipboard-target]');
+    $(function () {
+        $('[data-tooltip="tooltip"]').tooltip()
+    });
+
+    /** from https://github.com/twbs/bootstrap/blob/c11132351e3e434f6d4ed72e5a418eb692c6a319/assets/js/src/application.js */
+    clipboard.on('success', function (e) {
+        $(e.trigger)
+            .attr('title', 'Copied!')
+            .tooltip('_fixTitle')
+            .tooltip('show')
+            .tooltip('_fixTitle');
+        e.clearSelection();
+    });
+
+</script>
+
+</body>
+</html>

src/imap_client.php

@@ -0,0 +1,95 @@
+<?php
+
+class ImapClient {
+
+    /*PhpImap\Mailbox */
+    private $mailbox;
+
+    public function __construct($imapPath, $login, $password) {
+        $this->mailbox = new PhpImap\Mailbox($imapPath, $login, $password);
+    }
+
+    /**
+     * returns all mails for the given $user.
+     * @param $user User
+     * @return array
+     */
+    public function get_emails(User $user): array {
+        // Search for mails with the recipient $address in TO or CC.
+        $mailsIdsTo = imap_sort($this->mailbox->getImapStream(), SORTARRIVAL, true, SE_UID, 'TO "' . $user->address . '"');
+        $mailsIdsCc = imap_sort($this->mailbox->getImapStream(), SORTARRIVAL, true, SE_UID, 'CC "' . $user->address . '"');
+        $mail_ids = array_merge($mailsIdsTo, $mailsIdsCc);
+
+        $emails = $this->_load_emails($mail_ids, $user);
+        return $emails;
+    }
+
+
+    /**
+     * deletes emails by id and username. The address must match the recipient in the email.
+     *
+     * @param $mailid integer imap email id
+     * @param $user User
+     * @internal param the $username matching username
+     * @return true if success
+     */
+    public function delete_email(string $mailid, User $user): bool {
+        if ($this->load_one_email($mailid, $user) !== null) {
+            $this->mailbox->deleteMail($mailid);
+            $this->mailbox->expungeDeletedMails();
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Load exactly one email, the $address in TO or CC has to match.
+     */
+    public function load_one_email(int $mailid, User $user): ?\PhpImap\IncomingMail {
+        // in order to avoid https://www.owasp.org/index.php/Top_10_2013-A4-Insecure_Direct_Object_References
+        // the recipient in the email has to match the $address.
+        @$emails = $this->_load_emails(array($mailid), $user);
+        return count($emails) === 1 ? $emails[0] : null;
+    }
+
+
+    public function load_one_email_fully($download_email_id, $user): ?string {
+        if ($this->load_one_email($download_email_id, $user) !== null) {
+            $headers = imap_fetchheader($this->mailbox->getImapStream(), $download_email_id, FT_UID);
+            $body = imap_body($this->mailbox->getImapStream(), $download_email_id, FT_UID);
+            return $headers . "\n" . $body;
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Load emails using the $mail_ids, the mails have to match the $address in TO or CC.
+     * @param $mail_ids array of integer ids
+     * @param $user User
+     * @return array of emails
+     */
+    private function _load_emails(array $mail_ids, User $user) {
+        $emails = array();
+        foreach ($mail_ids as $id) {
+            $mail = $this->mailbox->getMail($id);
+            // imap_search also returns partials matches. The mails have to be filtered again:
+            if (array_key_exists($user->address, $mail->to) || array_key_exists($user->address, $mail->cc)) {
+                $emails[] = $mail;
+            }
+        }
+        return $emails;
+    }
+
+    /**
+     * deletes messages older than X days.
+     */
+    public function delete_old_messages(string $delete_messages_older_than) {
+        $ids = $this->mailbox->searchMailbox('BEFORE ' . date('d-M-Y', strtotime($delete_messages_older_than)));
+        foreach ($ids as $id) {
+            $this->mailbox->deleteMail($id);
+        }
+        $this->mailbox->expungeDeletedMails();
+    }
+}

src/index.html

@@ -1,150 +0,0 @@
-<!doctype html>
-<html lang="de" ng-app="app" ng-strict-di>
-<head>
-    <meta charset="utf-8">
-    <title>Mailbox</title>
-    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-    <meta name="mobile-web-app-capable" content="yes">
-    <meta name="apple-mobile-web-app-capable" content="yes">
-    <meta name="apple-mobile-web-app-status-bar-style" content="black">
-    <meta name="description" content="Mailbox">
-    <link rel="shortcut icon" href="favicon.gif" type="image/x-icon">
-    <link rel="stylesheet" href="client-libs/style.css">
-    <link rel="stylesheet" href="client-libs/spinner.css">
-    <link rel="stylesheet" href="client-libs/angular-stickyfill-0.1.0/angular-stickyfill.css">
-    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/css/bootstrap.min.css"
-          integrity="sha384-AysaV+vQoT3kOAXZkl02PThvDr8HYKPZhNT5h/CXfBThSRXQ6jW5DO2ekP5ViFdi" crossorigin="anonymous">
-</head>
-<body>
-<div ng-controller="MailboxController as $ctrl" ng-cloak>
-    <header>
-        <div class="container">
-
-            <form ng-submit="$ctrl.updateUsername($ctrl.inputFieldUsername)">
-
-                <small id="emailHelp" class="form-text text-muted">
-                    You have <span class="tag tag-pill tag-default">{{$ctrl.mails.length}}</span> mails in your
-                    mailbox:
-                </small>
-
-                <div class="form-group row">
-                    <div class="col-sm-8">
-
-                        <input id="inputFieldUsername" ng-model="$ctrl.inputFieldUsername"
-                               placeholder="new username"
-                               type="text" class="form-control form-control-lg" onclick="this.select()"/>
-                    </div>
-                    <div class="col-sm-2">
-                        <button id="openRandomButton" ng-click="$ctrl.randomize()" type="button"
-                                class="btn btn-outline-primary">open random
-                        </button>
-                    </div>
-                </div>
-            </form>
-        </div>
-    </header>
-
-    <main>
-        <div class="container min-height">
-            <div ng-if="$ctrl.error" class="alert alert-danger" role="alert">
-                <p><strong>Sorry, there was a problem. </strong></p>
-                <p> {{$ctrl.error.desc}} </p>
-                <div>
-                    <pre>{{$ctrl.error.detail|json}}</pre>
-                </div>
-                <p> If you are the developer you might want to check the developer tools console of your web
-                    browser and your php error logs. </p>
-            </div>
-
-            <div ng-if="$ctrl.username && $ctrl.mails.length == 0">
-                <div class="card waiting-screen">
-                    <div class="card-block">
-                        <p class="lead">Your mailbox <strong>{{$ctrl.address}}</strong> is ready. </p>
-                        <p>Emails will appear here automatically. They will be deleted after 30 days.</p>
-                        <div class="spinner">
-                            <div class="rect1"></div>
-                            <div class="rect2"></div>
-                            <div class="rect3"></div>
-                            <div class="rect4"></div>
-                            <div class="rect5"></div>
-                        </div>
-                    </div>
-                </div>
-            </div>
-            <div ng-if="$ctrl.username" ng-repeat="mail in $ctrl.mails | orderBy:'-date' track by $index"
-                 class="email-table">
-
-                <div class="card email">
-                    <div class="card-block header-shadow sticky-header" ec-stickyfill ng-init="htmlTabActive=false">
-                        <div class="row">
-                            <div class="col-sm-8">
-                                <h3 class="card-title">{{mail.subject}}</h3>
-                            </div>
-                            <div class="col-sm-4 text-right">
-                                <form class="form-inline float-xs-right">
-
-                                    <button ng-show="htmlTabActive" class="btn btn-outline-info btn-sm "
-                                            ng-click="htmlTabActive=false">show text
-                                    </button>
-                                    <button ng-show="mail.textHtml && !htmlTabActive"
-                                            class="btn btn-outline-info btn-sm"
-                                            ng-click="htmlTabActive=true">show html
-                                    </button>
-
-                                    <a role="button" class="btn btn-sm btn-outline-primary "
-                                       href="{{$ctrl.backend_url}}?download_email_id={{mail.id}}&username={{$ctrl.username}}"
-                                       download="true">Download
-                                    </a>
-
-                                    <button ng-click="$ctrl.deleteMail(mail, $index)" type="button"
-                                            class="btn btn-sm btn-outline-danger">Delete
-                                    </button>
-                                </form>
-                            </div>
-                        </div>
-                        <div class="row">
-                            <div class="col-sm-8">
-                                <h6 class="card-subtitle mt-1 text-muted">{{mail.fromName}}
-                                    &lt;{{mail.fromAddress}}&gt;</h6>
-                            </div>
-                            <div class="col-sm-4">
-                                <h6 class="card-subtitle mt-1 text-muted" style="text-align: right">{{mail.date}}</h6>
-                            </div>
-
-
-                        </div>
-                    </div>
-                    <div class="card-block">
-                        <h6 class="card-subtitle text-muted">To: {{mail.toString}}</h6>
-                        <h6 ng-if="mail.cc" ng-repeat="(address,name) in mail.cc" class="card-subtitle text-muted">CC:
-                            {{address}}</h6>
-
-                        <div class="mt-2 card-text">
-                            <div ng-if="!htmlTabActive" ng-bind-html="mail.textPlain | nl2br | autolink "></div>
-                            <div ng-if="htmlTabActive" ng-bind-html="mail.textHtml"></div>
-                        </div>
-                    </div>
-                </div>
-            </div>
-        </div>
-    </main>
-</div>
-
-<footer>
-    <p>Powered by <a href="https://github.com/synox/disposable-mailbox"><strong>synox/disposable-mailbox</strong></a>
-        | <a href="https://github.com/synox/disposable-mailbox"><span class="octicon octicon-mark-github"></span> Fork
-            me on github</a></p>
-</footer>
-
-<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
-<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular-sanitize.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/autolinker/1.2.0/Autolinker.min.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/chance/1.0.4/chance.min.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/stickyfill/1.1.4/stickyfill.min.js"></script>
-<script src="client-libs/angular-stickyfill-0.1.0/angular-stickyfill.js"></script>
-<script src="client-libs/index.js"></script>
-<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/js-signals/1.0.0/js-signals.js"></script>
-<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/hasher/1.2.0/hasher.js"></script>
-
-</body>
-</html>

src/index.php

@@ -0,0 +1,40 @@
+<?php
+
+// check for common errors
+if (version_compare(phpversion(), '7.2', '<')) {
+    die("ERROR! The php version isn't high enough, you need at least 7.2 to run this application! But you have: " . phpversion());
+}
+extension_loaded("imap") || die('ERROR: IMAP extension not loaded. Please see the installation instructions in the README.md');
+
+
+# load php dependencies:
+require_once './vendor/autoload.php';
+require_once './config_helper.php';
+require_once './User.php';
+require_once './imap_client.php';
+require_once './controller.php';
+
+load_config();
+
+$imapClient = new ImapClient($config['imap']['url'], $config['imap']['username'], $config['imap']['password']);
+
+if (DisplayEmailsController::matches()) {
+    DisplayEmailsController::invoke($imapClient, $config);
+} elseif (RedirectToAddressController::matches()) {
+    RedirectToAddressController::invoke($imapClient, $config);
+} elseif (RedirectToRandomAddressController::matches()) {
+    RedirectToRandomAddressController::invoke($imapClient, $config);
+} elseif (DownloadEmailController::matches()) {
+    DownloadEmailController::invoke($imapClient, $config);
+} elseif (DeleteEmailController::matches()) {
+    DeleteEmailController::invoke($imapClient, $config);
+} elseif (HasNewMessagesControllerJson::matches()) {
+    HasNewMessagesControllerJson::invoke($imapClient, $config);
+} else {
+    // If requesting the main site, just redirect to a new random mailbox.
+    RedirectToRandomAddressController::invoke($imapClient, $config);
+}
+
+
+// delete after each request
+$imapClient->delete_old_messages($config['delete_messages_older_than']);

src/vendor/autoload.php

@@ -0,0 +1,7 @@
+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInitaa0b39385f5e64ad4c25b54d37853f67::getLoader();

src/vendor/composer/ClassLoader.php

@@ -55,6 +55,7 @@ class ClassLoader
     private $classMap = array();
     private $classMapAuthoritative = false;
     private $missingClasses = array();
+    private $apcuPrefix;
 
     public function getPrefixes()
     {
@@ -271,6 +272,26 @@ class ClassLoader
         return $this->classMapAuthoritative;
     }
 
+    /**
+     * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
+     *
+     * @param string|null $apcuPrefix
+     */
+    public function setApcuPrefix($apcuPrefix)
+    {
+        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
+    }
+
+    /**
+     * The APCu prefix in use, or null if APCu caching is not enabled.
+     *
+     * @return string|null
+     */
+    public function getApcuPrefix()
+    {
+        return $this->apcuPrefix;
+    }
+
     /**
      * Registers this instance as an autoloader.
      *
@@ -313,11 +334,6 @@ class ClassLoader
      */
     public function findFile($class)
     {
-        // work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731
-        if ('\\' == $class[0]) {
-            $class = substr($class, 1);
-        }
-
         // class map lookup
         if (isset($this->classMap[$class])) {
             return $this->classMap[$class];
@@ -325,6 +341,12 @@ class ClassLoader
         if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
             return false;
         }
+        if (null !== $this->apcuPrefix) {
+            $file = apcu_fetch($this->apcuPrefix.$class, $hit);
+            if ($hit) {
+                return $file;
+            }
+        }
 
         $file = $this->findFileWithExtension($class, '.php');
 
@@ -333,6 +355,10 @@ class ClassLoader
             $file = $this->findFileWithExtension($class, '.hh');
         }
 
+        if (null !== $this->apcuPrefix) {
+            apcu_add($this->apcuPrefix.$class, $file);
+        }
+
         if (false === $file) {
             // Remember that this class does not exist.
             $this->missingClasses[$class] = true;
@@ -348,10 +374,14 @@ class ClassLoader
 
         $first = $class[0];
         if (isset($this->prefixLengthsPsr4[$first])) {
-            foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) {
-                if (0 === strpos($class, $prefix)) {
-                    foreach ($this->prefixDirsPsr4[$prefix] as $dir) {
-                        if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
+            $subPath = $class;
+            while (false !== $lastPos = strrpos($subPath, '\\')) {
+                $subPath = substr($subPath, 0, $lastPos);
+                $search = $subPath . '\\';
+                if (isset($this->prefixDirsPsr4[$search])) {
+                    $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
+                    foreach ($this->prefixDirsPsr4[$search] as $dir) {
+                        if (file_exists($file = $dir . $pathEnd)) {
                             return $file;
                         }
                     }

src/vendor/composer/LICENSE

@@ -1,5 +1,5 @@
 
-Copyright (c) 2016 Nils Adermann, Jordi Boggiano
+Copyright (c) Nils Adermann, Jordi Boggiano
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/vendor/composer/autoload_files.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_files.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname(dirname($vendorDir));
+
+return array(
+    '2cffec82183ee1cea088009cef9a6fc3' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier.composer.php',
+);

src/vendor/composer/autoload_namespaces.php

@@ -6,5 +6,6 @@ $vendorDir = dirname(dirname(__FILE__));
 $baseDir = dirname(dirname($vendorDir));
 
 return array(
-    'PhpImap' => array($vendorDir . '/php-imap/php-imap/src'),
+    'PronounceableWord_' => array($vendorDir . '/gnugat/PronounceableWord/src'),
+    'HTMLPurifier' => array($vendorDir . '/ezyang/htmlpurifier/library'),
 );

src/vendor/composer/autoload_psr4.php

@@ -6,4 +6,6 @@ $vendorDir = dirname(dirname(__FILE__));
 $baseDir = dirname(dirname($vendorDir));
 
 return array(
+    'PhpImap\\' => array($vendorDir . '/php-imap/php-imap/src/PhpImap'),
+    'Moment\\' => array($vendorDir . '/fightbulc/moment/src'),
 );

src/vendor/composer/autoload_real.php

@@ -2,7 +2,7 @@
 
 // autoload_real.php @generated by Composer
 
-class ComposerAutoloaderInit125dddd280a32cf75b181166154246ec
+class ComposerAutoloaderInitaa0b39385f5e64ad4c25b54d37853f67
 {
     private static $loader;
 
@@ -19,15 +19,15 @@ class ComposerAutoloaderInit125dddd280a32cf75b181166154246ec
             return self::$loader;
         }
 
-        spl_autoload_register(array('ComposerAutoloaderInit125dddd280a32cf75b181166154246ec', 'loadClassLoader'), true, true);
+        spl_autoload_register(array('ComposerAutoloaderInitaa0b39385f5e64ad4c25b54d37853f67', 'loadClassLoader'), true, true);
         self::$loader = $loader = new \Composer\Autoload\ClassLoader();
-        spl_autoload_unregister(array('ComposerAutoloaderInit125dddd280a32cf75b181166154246ec', 'loadClassLoader'));
+        spl_autoload_unregister(array('ComposerAutoloaderInitaa0b39385f5e64ad4c25b54d37853f67', 'loadClassLoader'));
 
-        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION');
+        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
         if ($useStaticLoader) {
             require_once __DIR__ . '/autoload_static.php';
 
-            call_user_func(\Composer\Autoload\ComposerStaticInit125dddd280a32cf75b181166154246ec::getInitializer($loader));
+            call_user_func(\Composer\Autoload\ComposerStaticInitaa0b39385f5e64ad4c25b54d37853f67::getInitializer($loader));
         } else {
             $map = require __DIR__ . '/autoload_namespaces.php';
             foreach ($map as $namespace => $path) {
@@ -47,6 +47,24 @@ class ComposerAutoloaderInit125dddd280a32cf75b181166154246ec
 
         $loader->register(true);
 
+        if ($useStaticLoader) {
+            $includeFiles = Composer\Autoload\ComposerStaticInitaa0b39385f5e64ad4c25b54d37853f67::$files;
+        } else {
+            $includeFiles = require __DIR__ . '/autoload_files.php';
+        }
+        foreach ($includeFiles as $fileIdentifier => $file) {
+            composerRequireaa0b39385f5e64ad4c25b54d37853f67($fileIdentifier, $file);
+        }
+
         return $loader;
     }
 }
+
+function composerRequireaa0b39385f5e64ad4c25b54d37853f67($fileIdentifier, $file)
+{
+    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+        require $file;
+
+        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+    }
+}

src/vendor/composer/autoload_static.php

@@ -0,0 +1,61 @@
+<?php
+
+// autoload_static.php @generated by Composer
+
+namespace Composer\Autoload;
+
+class ComposerStaticInitaa0b39385f5e64ad4c25b54d37853f67
+{
+    public static $files = array (
+        '2cffec82183ee1cea088009cef9a6fc3' => __DIR__ . '/..' . '/ezyang/htmlpurifier/library/HTMLPurifier.composer.php',
+    );
+
+    public static $prefixLengthsPsr4 = array (
+        'P' => 
+        array (
+            'PhpImap\\' => 8,
+        ),
+        'M' => 
+        array (
+            'Moment\\' => 7,
+        ),
+    );
+
+    public static $prefixDirsPsr4 = array (
+        'PhpImap\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/php-imap/php-imap/src/PhpImap',
+        ),
+        'Moment\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/fightbulc/moment/src',
+        ),
+    );
+
+    public static $prefixesPsr0 = array (
+        'P' => 
+        array (
+            'PronounceableWord_' => 
+            array (
+                0 => __DIR__ . '/..' . '/gnugat/PronounceableWord/src',
+            ),
+        ),
+        'H' => 
+        array (
+            'HTMLPurifier' => 
+            array (
+                0 => __DIR__ . '/..' . '/ezyang/htmlpurifier/library',
+            ),
+        ),
+    );
+
+    public static function getInitializer(ClassLoader $loader)
+    {
+        return \Closure::bind(function () use ($loader) {
+            $loader->prefixLengthsPsr4 = ComposerStaticInitaa0b39385f5e64ad4c25b54d37853f67::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInitaa0b39385f5e64ad4c25b54d37853f67::$prefixDirsPsr4;
+            $loader->prefixesPsr0 = ComposerStaticInitaa0b39385f5e64ad4c25b54d37853f67::$prefixesPsr0;
+
+        }, null, ClassLoader::class);
+    }
+}

src/vendor/composer/installed.json

@@ -0,0 +1,204 @@
+[
+    {
+        "name": "ezyang/htmlpurifier",
+        "version": "v4.10.0",
+        "version_normalized": "4.10.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/ezyang/htmlpurifier.git",
+            "reference": "d85d39da4576a6934b72480be6978fb10c860021"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/d85d39da4576a6934b72480be6978fb10c860021",
+            "reference": "d85d39da4576a6934b72480be6978fb10c860021",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.2"
+        },
+        "require-dev": {
+            "simpletest/simpletest": "^1.1"
+        },
+        "time": "2018-02-23T01:58:20+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-0": {
+                "HTMLPurifier": "library/"
+            },
+            "files": [
+                "library/HTMLPurifier.composer.php"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "LGPL"
+        ],
+        "authors": [
+            {
+                "name": "Edward Z. Yang",
+                "email": "admin@htmlpurifier.org",
+                "homepage": "http://ezyang.com"
+            }
+        ],
+        "description": "Standards compliant HTML filter written in PHP",
+        "homepage": "http://htmlpurifier.org/",
+        "keywords": [
+            "html"
+        ]
+    },
+    {
+        "name": "fightbulc/moment",
+        "version": "1.29.0",
+        "version_normalized": "1.29.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/fightbulc/moment.php.git",
+            "reference": "bd57bba6d00dfa012e7b7b167e7006c6247ce3c8"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/fightbulc/moment.php/zipball/bd57bba6d00dfa012e7b7b167e7006c6247ce3c8",
+            "reference": "bd57bba6d00dfa012e7b7b167e7006c6247ce3c8",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.3.0"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "^4.8.36 || ^5.5 || ^6.5 || ^7.5"
+        },
+        "time": "2019-01-07T11:16:45+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Moment\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Tino Ehrich",
+                "email": "tino@bigpun.me",
+                "role": "developer"
+            }
+        ],
+        "description": "Parse, validate, manipulate, and display dates in PHP w/ i18n support. Inspired by moment.js",
+        "keywords": [
+            "date",
+            "display",
+            "format",
+            "i18n",
+            "locale",
+            "manipulate",
+            "moment",
+            "parse",
+            "time",
+            "translation",
+            "validate"
+        ]
+    },
+    {
+        "name": "gnugat/PronounceableWord",
+        "version": "2.0.0",
+        "version_normalized": "2.0.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/gnugat-legacy/PronounceableWord.git",
+            "reference": "fcdc0dc39775fa625040c37003727019657d001b"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/gnugat-legacy/PronounceableWord/zipball/fcdc0dc39775fa625040c37003727019657d001b",
+            "reference": "fcdc0dc39775fa625040c37003727019657d001b",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.2"
+        },
+        "time": "2012-01-08T19:36:58+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-0": {
+                "PronounceableWord_": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Loïc Chardonnet"
+            }
+        ],
+        "description": "A light, customizable and simple library generating random and pronounceable words without using dictionaries or Markov chains.",
+        "homepage": "https://github.com/gnugat/PronounceableWord",
+        "keywords": [
+            "generator",
+            "pronounceable",
+            "word"
+        ],
+        "abandoned": true
+    },
+    {
+        "name": "php-imap/php-imap",
+        "version": "3.0.6",
+        "version_normalized": "3.0.6.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/barbushin/php-imap.git",
+            "reference": "d4f8ef4504dfb555857241aa7d1e414a1c229079"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/barbushin/php-imap/zipball/d4f8ef4504dfb555857241aa7d1e414a1c229079",
+            "reference": "d4f8ef4504dfb555857241aa7d1e414a1c229079",
+            "shasum": ""
+        },
+        "require": {
+            "ext-imap": "*",
+            "php": ">=5.5"
+        },
+        "time": "2017-12-22T12:53:34+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-master": "3.0-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "PhpImap\\": "src/PhpImap"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Sergey Barbushin",
+                "email": "barbushin@gmail.com",
+                "homepage": "http://linkedin.com/in/barbushin"
+            }
+        ],
+        "description": "Manage mailboxes, filter/get/delete emails in PHP (supports IMAP/POP3/NNTP)",
+        "homepage": "https://github.com/barbushin/php-imap",
+        "keywords": [
+            "imap",
+            "mail",
+            "mailbox",
+            "php",
+            "pop3",
+            "receive emails"
+        ]
+    }
+]

src/vendor/ezyang/htmlpurifier/CREDITS

@@ -0,0 +1,9 @@
+
+CREDITS
+
+Almost everything written by Edward Z. Yang (Ambush Commander).  Lots of thanks
+to the DevNetwork Community for their help (see docs/ref-devnetwork.html for
+more details), Feyd especially (namely IPv6 and optimization).  Thanks to RSnake
+for letting me package his fantastic XSS cheatsheet for a smoketest.
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/INSTALL

@@ -0,0 +1,373 @@
+
+Install
+    How to install HTML Purifier
+
+HTML Purifier is designed to run out of the box, so actually using the
+library is extremely easy.  (Although... if you were looking for a
+step-by-step installation GUI, you've downloaded the wrong software!)
+
+While the impatient can get going immediately with some of the sample
+code at the bottom of this library, it's well worth reading this entire
+document--most of the other documentation assumes that you are familiar
+with these contents.
+
+
+---------------------------------------------------------------------------
+1.  Compatibility
+
+HTML Purifier is PHP 5 and PHP 7, and is actively tested from PHP 5.0.5
+and up. It has no core dependencies with other libraries.
+
+These optional extensions can enhance the capabilities of HTML Purifier:
+
+    * iconv  : Converts text to and from non-UTF-8 encodings
+    * bcmath : Used for unit conversion and imagecrash protection
+    * tidy   : Used for pretty-printing HTML
+
+These optional libraries can enhance the capabilities of HTML Purifier:
+
+    * CSSTidy : Clean CSS stylesheets using %Core.ExtractStyleBlocks
+        Note: You should use the modernized fork of CSSTidy available
+        at https://github.com/Cerdic/CSSTidy
+    * Net_IDNA2 (PEAR) : IRI support using %Core.EnableIDNA
+        Note: This is not necessary for PHP 5.3 or later
+
+---------------------------------------------------------------------------
+2.  Reconnaissance
+
+A big plus of HTML Purifier is its inerrant support of standards, so
+your web-pages should be standards-compliant.  (They should also use
+semantic markup, but that's another issue altogether, one HTML Purifier
+cannot fix without reading your mind.)
+
+HTML Purifier can process these doctypes:
+
+* XHTML 1.0 Transitional (default)
+* XHTML 1.0 Strict
+* HTML 4.01 Transitional
+* HTML 4.01 Strict
+* XHTML 1.1
+
+...and these character encodings:
+
+* UTF-8 (default)
+* Any encoding iconv supports (with crippled internationalization support)
+
+These defaults reflect what my choices would be if I were authoring an
+HTML document, however, what you choose depends on the nature of your
+codebase.  If you don't know what doctype you are using, you can determine
+the doctype from this identifier at the top of your source code:
+
+    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+...and the character encoding from this code:
+
+    <meta http-equiv="Content-type" content="text/html;charset=ENCODING">
+
+If the character encoding declaration is missing, STOP NOW, and
+read 'docs/enduser-utf8.html' (web accessible at
+http://htmlpurifier.org/docs/enduser-utf8.html).  In fact, even if it is
+present, read this document anyway, as many websites specify their
+document's character encoding incorrectly.
+
+
+---------------------------------------------------------------------------
+3.  Including the library
+
+The procedure is quite simple:
+
+    require_once '/path/to/library/HTMLPurifier.auto.php';
+
+This will setup an autoloader, so the library's files are only included
+when you use them.
+
+Only the contents in the library/ folder are necessary, so you can remove
+everything else when using HTML Purifier in a production environment.
+
+If you installed HTML Purifier via PEAR, all you need to do is:
+
+    require_once 'HTMLPurifier.auto.php';
+
+Please note that the usual PEAR practice of including just the classes you
+want will not work with HTML Purifier's autoloading scheme.
+
+Advanced users, read on; other users can skip to section 4.
+
+Autoload compatibility
+----------------------
+
+    HTML Purifier attempts to be as smart as possible when registering an
+    autoloader, but there are some cases where you will need to change
+    your own code to accomodate HTML Purifier. These are those cases:
+
+    PHP VERSION IS LESS THAN 5.1.2, AND YOU'VE DEFINED __autoload
+        Because spl_autoload_register() doesn't exist in early versions
+        of PHP 5, HTML Purifier has no way of adding itself to the autoload
+        stack. Modify your __autoload function to test
+        HTMLPurifier_Bootstrap::autoload($class)
+
+        For example, suppose your autoload function looks like this:
+
+            function __autoload($class) {
+                require str_replace('_', '/', $class) . '.php';
+                return true;
+            }
+
+        A modified version with HTML Purifier would look like this:
+
+            function __autoload($class) {
+                if (HTMLPurifier_Bootstrap::autoload($class)) return true;
+                require str_replace('_', '/', $class) . '.php';
+                return true;
+            }
+
+        Note that there *is* some custom behavior in our autoloader; the
+        original autoloader in our example would work for 99% of the time,
+        but would fail when including language files.
+
+    AN __autoload FUNCTION IS DECLARED AFTER OUR AUTOLOADER IS REGISTERED
+        spl_autoload_register() has the curious behavior of disabling
+        the existing __autoload() handler. Users need to explicitly
+        spl_autoload_register('__autoload'). Because we use SPL when it
+        is available, __autoload() will ALWAYS be disabled. If __autoload()
+        is declared before HTML Purifier is loaded, this is not a problem:
+        HTML Purifier will register the function for you. But if it is
+        declared afterwards, it will mysteriously not work. This
+        snippet of code (after your autoloader is defined) will fix it:
+
+            spl_autoload_register('__autoload')
+
+    Users should also be on guard if they use a version of PHP previous
+    to 5.1.2 without an autoloader--HTML Purifier will define __autoload()
+    for you, which can collide with an autoloader that was added by *you*
+    later.
+
+
+For better performance
+----------------------
+
+    Opcode caches, which greatly speed up PHP initialization for scripts
+    with large amounts of code (HTML Purifier included), don't like
+    autoloaders. We offer an include file that includes all of HTML Purifier's
+    files in one go in an opcode cache friendly manner:
+
+        // If /path/to/library isn't already in your include path, uncomment
+        // the below line:
+        // require '/path/to/library/HTMLPurifier.path.php';
+
+        require 'HTMLPurifier.includes.php';
+
+    Optional components still need to be included--you'll know if you try to
+    use a feature and you get a class doesn't exists error! The autoloader
+    can be used in conjunction with this approach to catch classes that are
+    missing. Simply add this afterwards:
+
+        require 'HTMLPurifier.autoload.php';
+
+Standalone version
+------------------
+
+    HTML Purifier has a standalone distribution; you can also generate
+    a standalone file from the full version by running the script
+    maintenance/generate-standalone.php . The standalone version has the
+    benefit of having most of its code in one file, so parsing is much
+    faster and the library is easier to manage.
+
+    If HTMLPurifier.standalone.php exists in the library directory, you
+    can use it like this:
+
+        require '/path/to/HTMLPurifier.standalone.php';
+
+    This is equivalent to including HTMLPurifier.includes.php, except that
+    the contents of standalone/ will be added to your path. To override this
+    behavior, specify a new HTMLPURIFIER_PREFIX where standalone files can
+    be found (usually, this will be one directory up, the "true" library
+    directory in full distributions). Don't forget to set your path too!
+
+    The autoloader can be added to the end to ensure the classes are
+    loaded when necessary; otherwise you can manually include them.
+    To use the autoloader, use this:
+
+        require 'HTMLPurifier.autoload.php';
+
+For advanced users
+------------------
+
+    HTMLPurifier.auto.php performs a number of operations that can be done
+    individually. These are:
+
+        HTMLPurifier.path.php
+            Puts /path/to/library in the include path. For high performance,
+            this should be done in php.ini.
+
+        HTMLPurifier.autoload.php
+            Registers our autoload handler HTMLPurifier_Bootstrap::autoload($class).
+
+    You can do these operations by yourself--in fact, you must modify your own
+    autoload handler if you are using a version of PHP earlier than PHP 5.1.2
+    (See "Autoload compatibility" above).
+
+
+---------------------------------------------------------------------------
+4. Configuration
+
+HTML Purifier is designed to run out-of-the-box, but occasionally HTML
+Purifier needs to be told what to do.  If you answer no to any of these
+questions, read on; otherwise, you can skip to the next section (or, if you're
+into configuring things just for the heck of it, skip to 4.3).
+
+* Am I using UTF-8?
+* Am I using XHTML 1.0 Transitional?
+
+If you answered no to any of these questions, instantiate a configuration
+object and read on:
+
+    $config = HTMLPurifier_Config::createDefault();
+
+
+4.1. Setting a different character encoding
+
+You really shouldn't use any other encoding except UTF-8, especially if you
+plan to support multilingual websites (read section three for more details).
+However, switching to UTF-8 is not always immediately feasible, so we can
+adapt.
+
+HTML Purifier uses iconv to support other character encodings, as such,
+any encoding that iconv supports <http://www.gnu.org/software/libiconv/>
+HTML Purifier supports with this code:
+
+    $config->set('Core.Encoding', /* put your encoding here */);
+
+An example usage for Latin-1 websites (the most common encoding for English
+websites):
+
+    $config->set('Core.Encoding', 'ISO-8859-1');
+
+Note that HTML Purifier's support for non-Unicode encodings is crippled by the
+fact that any character not supported by that encoding will be silently
+dropped, EVEN if it is ampersand escaped.  If you want to work around
+this, you are welcome to read docs/enduser-utf8.html for a fix,
+but please be cognizant of the issues the "solution" creates (for this
+reason, I do not include the solution in this document).
+
+
+4.2. Setting a different doctype
+
+For those of you using HTML 4.01 Transitional, you can disable
+XHTML output like this:
+
+    $config->set('HTML.Doctype', 'HTML 4.01 Transitional');
+
+Other supported doctypes include:
+
+    * HTML 4.01 Strict
+    * HTML 4.01 Transitional
+    * XHTML 1.0 Strict
+    * XHTML 1.0 Transitional
+    * XHTML 1.1
+
+
+4.3. Other settings
+
+There are more configuration directives which can be read about
+here: <http://htmlpurifier.org/live/configdoc/plain.html>  They're a bit boring,
+but they can help out for those of you who like to exert maximum control over
+your code.  Some of the more interesting ones are configurable at the
+demo <http://htmlpurifier.org/demo.php> and are well worth looking into
+for your own system.
+
+For example, you can fine tune allowed elements and attributes, convert
+relative URLs to absolute ones, and even autoparagraph input text! These
+are, respectively, %HTML.Allowed, %URI.MakeAbsolute and %URI.Base, and
+%AutoFormat.AutoParagraph. The %Namespace.Directive naming convention
+translates to:
+
+    $config->set('Namespace.Directive', $value);
+
+E.g.
+
+    $config->set('HTML.Allowed', 'p,b,a[href],i');
+    $config->set('URI.Base', 'http://www.example.com');
+    $config->set('URI.MakeAbsolute', true);
+    $config->set('AutoFormat.AutoParagraph', true);
+
+
+---------------------------------------------------------------------------
+5. Caching
+
+HTML Purifier generates some cache files (generally one or two) to speed up
+its execution. For maximum performance, make sure that
+library/HTMLPurifier/DefinitionCache/Serializer is writeable by the webserver.
+
+If you are in the library/ folder of HTML Purifier, you can set the
+appropriate permissions using:
+
+    chmod -R 0755 HTMLPurifier/DefinitionCache/Serializer
+
+If the above command doesn't work, you may need to assign write permissions
+to group:
+
+    chmod -R 0775 HTMLPurifier/DefinitionCache/Serializer
+
+You can also chmod files via your FTP client; this option
+is usually accessible by right clicking the corresponding directory and
+then selecting "chmod" or "file permissions".
+
+Starting with 2.0.1, HTML Purifier will generate friendly error messages
+that will tell you exactly what you have to chmod the directory to, if in doubt,
+follow its advice.
+
+If you are unable or unwilling to give write permissions to the cache
+directory, you can either disable the cache (and suffer a performance
+hit):
+
+    $config->set('Core.DefinitionCache', null);
+
+Or move the cache directory somewhere else (no trailing slash):
+
+    $config->set('Cache.SerializerPath', '/home/user/absolute/path');
+
+
+---------------------------------------------------------------------------
+6.   Using the code
+
+The interface is mind-numbingly simple:
+
+    $purifier = new HTMLPurifier($config);
+    $clean_html = $purifier->purify( $dirty_html );
+
+That's it!  For more examples, check out docs/examples/ (they aren't very
+different though).  Also, docs/enduser-slow.html gives advice on what to
+do if HTML Purifier is slowing down your application.
+
+
+---------------------------------------------------------------------------
+7.   Quick install
+
+First, make sure library/HTMLPurifier/DefinitionCache/Serializer is
+writable by the webserver (see Section 5: Caching above for details).
+If your website is in UTF-8 and XHTML Transitional, use this code:
+
+<?php
+    require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
+
+    $config = HTMLPurifier_Config::createDefault();
+    $purifier = new HTMLPurifier($config);
+    $clean_html = $purifier->purify($dirty_html);
+?>
+
+If your website is in a different encoding or doctype, use this code:
+
+<?php
+    require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
+
+    $config = HTMLPurifier_Config::createDefault();
+    $config->set('Core.Encoding', 'ISO-8859-1'); // replace with your encoding
+    $config->set('HTML.Doctype', 'HTML 4.01 Transitional'); // replace with your doctype
+    $purifier = new HTMLPurifier($config);
+
+    $clean_html = $purifier->purify($dirty_html);
+?>
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/INSTALL.fr.utf8

@@ -0,0 +1,60 @@
+
+Installation
+    Comment installer HTML Purifier
+
+Attention : Ce document est encodé en UTF-8, si les lettres avec des accents
+ne s'affichent pas, prenez un meilleur éditeur de texte.
+
+L'installation de HTML Purifier est très simple, parce qu'il n'a pas besoin
+de configuration. Pour les utilisateurs impatients, le code se trouve dans le
+pied de page, mais je recommande de lire le document.
+
+1.  Compatibilité
+
+HTML Purifier fonctionne avec PHP 5. PHP 5.0.5 est la dernière version testée.
+Il ne dépend pas d'autres librairies.
+
+Les extensions optionnelles sont iconv (généralement déjà installée) et tidy
+(répendue aussi). Si vous utilisez UTF-8 et que vous ne voulez pas l'indentation,
+vous pouvez utiliser HTML Purifier sans ces extensions.
+
+
+2.  Inclure la librairie
+
+Quand vous devez l'utilisez, incluez le :
+
+    require_once('/path/to/library/HTMLPurifier.auto.php');
+
+Ne pas l'inclure si ce n'est pas nécessaire, car HTML Purifier est lourd.
+
+HTML Purifier utilise "autoload". Si vous avez défini la fonction __autoload,
+vous devez ajouter cette fonction :
+
+    spl_autoload_register('__autoload')
+
+Plus d'informations dans le document "INSTALL".
+
+3.  Installation rapide
+
+Si votre site Web est en UTF-8 et XHTML Transitional, utilisez :
+
+<?php
+    require_once('/path/to/htmlpurifier/library/HTMLPurifier.auto.php');
+    $purificateur = new HTMLPurifier();
+    $html_propre = $purificateur->purify($html_a_purifier);
+?>
+
+Sinon, utilisez :
+
+<?php
+    require_once('/path/to/html/purifier/library/HTMLPurifier.auto.load');
+    $config = $HTMLPurifier_Config::createDefault();
+    $config->set('Core', 'Encoding', 'ISO-8859-1'); //Remplacez par votre
+    encodage
+    $config->set('Core', 'XHTML', true); //Remplacer par false si HTML 4.01
+    $purificateur = new HTMLPurifier($config);
+    $html_propre = $purificateur->purify($html_a_purifier);
+?>
+
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/LICENSE

@@ -0,0 +1,504 @@
+		  GNU LESSER GENERAL PUBLIC LICENSE
+		       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it.  You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
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+
+  When we speak of free software, we are referring to freedom of use,
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+
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+
+  However, linking a "work that uses the Library" with the Library
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+  When a "work that uses the Library" uses material from a header file
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+
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+
+  13. The Free Software Foundation may publish revised and/or new
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+
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+
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+possible use to the public, we recommend making it free software that
+everyone can redistribute and change.  You can do so by permitting
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+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
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+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/README.md

@@ -0,0 +1,29 @@
+HTML Purifier [![Build Status](https://secure.travis-ci.org/ezyang/htmlpurifier.svg?branch=master)](http://travis-ci.org/ezyang/htmlpurifier)
+=============
+
+HTML Purifier is an HTML filtering solution that uses a unique combination
+of robust whitelists and aggressive parsing to ensure that not only are
+XSS attacks thwarted, but the resulting HTML is standards compliant.
+
+HTML Purifier is oriented towards richly formatted documents from
+untrusted sources that require CSS and a full tag-set.  This library can
+be configured to accept a more restrictive set of tags, but it won't be
+as efficient as more bare-bones parsers. It will, however, do the job
+right, which may be more important.
+
+Places to go:
+
+* See INSTALL for a quick installation guide
+* See docs/ for developer-oriented documentation, code examples and
+  an in-depth installation guide.
+* See WYSIWYG for information on editors like TinyMCE and FCKeditor
+
+HTML Purifier can be found on the web at: [http://htmlpurifier.org/](http://htmlpurifier.org/)
+
+## Installation
+
+Package available on [Composer](https://packagist.org/packages/ezyang/htmlpurifier).
+
+If you're using Composer to manage dependencies, you can use
+
+    $ composer require "ezyang/htmlpurifier":"dev-master"

src/vendor/ezyang/htmlpurifier/TODO

@@ -0,0 +1,150 @@
+
+TODO List
+
+= KEY ====================
+    # Flagship
+    - Regular
+    ? Maybe I'll Do It
+==========================
+
+If no interest is expressed for a feature that may require a considerable
+amount of effort to implement, it may get endlessly delayed. Do not be
+afraid to cast your vote for the next feature to be implemented!
+
+Things to do as soon as possible:
+
+ - http://htmlpurifier.org/phorum/read.php?3,5560,6307#msg-6307
+ - Think about allowing explicit order of operations hooks for transforms
+ - Fix "<.<" bug (trailing < is removed if not EOD)
+ - Build in better internal state dumps and debugging tools for remote
+   debugging
+ - Allowed/Allowed* have strange interactions when both set
+ ? Transform lone embeds into object tags
+ - Deprecated config options that emit warnings when you set them (with'
+   a way of muting the warning if you really want to)
+ - Make HTML.Trusted work with Output.FlashCompat
+ - HTML.Trusted and HTML.SafeObject have funny interaction; general
+   problem is what to do when a module "supersedes" another
+   (see also tables and basic tables.)  This is a little dicier
+   because HTML.SafeObject has some extra functionality that
+   trusted might find useful.  See http://htmlpurifier.org/phorum/read.php?3,5762,6100
+
+FUTURE VERSIONS
+---------------
+
+4.9 release [OMG CONFIG PONIES]
+ ! Fix Printer. It's from the old days when we didn't have decent XML classes
+ ! Factor demo.php into a set of Printer classes, and then create a stub
+   file for users here (inside the actual HTML Purifier library)
+ - Fix error handling with form construction
+ - Do encoding validation in Printers, or at least, where user data comes in
+ - Config: Add examples to everything (make built-in which also automatically
+   gives output)
+ - Add "register" field to config schemas to eliminate dependence on
+   naming conventions (try to remember why we ultimately decided on tihs)
+
+5.0 release [HTML 5]
+ # Swap out code to use html5lib tokenizer and tree-builder
+ ! Allow turning off of FixNesting and required attribute insertion
+
+5.1 release [It's All About Trust] (floating)
+ # Implement untrusted, dangerous elements/attributes
+ # Implement IDREF support (harder than it seems, since you cannot have
+   IDREFs to non-existent IDs)
+     - Implement <area> (client and server side image maps are blocking
+       on IDREF support)
+ # Frameset XHTML 1.0 and HTML 4.01 doctypes
+ - Figure out how to simultaneously set %CSS.Trusted and %HTML.Trusted (?)
+
+5.2 release [Error'ed]
+ # Error logging for filtering/cleanup procedures
+ # Additional support for poorly written HTML
+    - Microsoft Word HTML cleaning (i.e. MsoNormal, but research essential!)
+    - Friendly strict handling of <address> (block -> <br>)
+ - XSS-attempt detection--certain errors are flagged XSS-like
+ - Append something to duplicate IDs so they're still usable (impl. note: the
+   dupe detector would also need to detect the suffix as well)
+
+6.0 release [Beyond HTML]
+ # Legit token based CSS parsing (will require revamping almost every
+   AttrDef class). Probably will use CSSTidy
+ # More control over allowed CSS properties using a modularization
+ # IRI support (this includes IDN)
+ - Standardize token armor for all areas of processing
+
+7.0 release [To XML and Beyond]
+ - Extended HTML capabilities based on namespacing and tag transforms (COMPLEX)
+    - Hooks for adding custom processors to custom namespaced tags and
+      attributes, offer default implementation
+    - Lots of documentation and samples
+
+Ongoing
+ - More refactoring to take advantage of PHP5's facilities
+ - Refactor unit tests into lots of test methods
+ - Plugins for major CMSes (COMPLEX)
+    - phpBB
+    - Also, a FAQ for extension writers with HTML Purifier
+
+AutoFormat
+ - Smileys
+ - Syntax highlighting (with GeSHi) with <pre> and possibly <?php
+ - Look at http://drupal.org/project/Modules/category/63 for ideas
+
+Neat feature related
+ ! Support exporting configuration, so users can easily tweak settings
+   in the demo, and then copy-paste into their own setup
+ - Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
+ - Allow scoped="scoped" attribute in <style> tags; may be troublesome
+   because regular CSS has no way of uniquely identifying nodes, so we'd
+   have to generate IDs
+ - Explain how to use HTML Purifier in non-PHP languages / create
+   a simple command line stub (or complicated?)
+ - Fixes for Firefox's inability to handle COL alignment props (Bug 915)
+ - Automatically add non-breaking spaces to empty table cells when
+   empty-cells:show is applied to have compatibility with Internet Explorer
+ - Table of Contents generation (XHTML Compiler might be reusable). May also
+   be out-of-band information.
+ - Full set of color keywords. Also, a way to add onto them without
+   finalizing the configuration object.
+ - Write a var_export and memcached DefinitionCache - Denis
+ - Built-in support for target="_blank" on all external links
+ - Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
+   Also, enable disabling of directionality
+ ? Externalize inline CSS to promote clean HTML, proposed by Sander Tekelenburg
+ ? Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
+    1. Analyzing which tags to remove duplicants
+    2. Ensure attributes are merged into the parent tag
+    3. Extend the tag exclusion system to specify whether or not the
+    contents should be dropped or not (currently, there's code that could do
+    something like this if it didn't drop the inner text too.)
+ ? Make AutoParagraph also support paragraph-izing double <br> tags, and not
+   just double newlines.  This is kind of tough to do in the current framework,
+   though, and might be reasonably approximated by search replacing double <br>s
+   with newlines before running it through HTML Purifier.
+
+Maintenance related (slightly boring)
+ # CHMOD install script for PEAR installs
+ ! Factor out command line parser into its own class, and unit test it
+ - Reduce size of internal data-structures (esp. HTMLDefinition)
+ - Allow merging configurations.  Thus,
+        a -> b -> default
+        c -> d -> default
+   becomes
+        a -> b -> c -> d -> default
+   Maybe allow more fine-grained tuning of this behavior. Alternatively,
+   encourage people to use short plist depths before building them up.
+ - Time PHPT tests
+
+ChildDef related (very boring)
+ - Abstract ChildDef_BlockQuote to work with all elements that only
+   allow blocks in them, required or optional
+ - Implement lenient <ruby> child validation
+
+Wontfix
+ - Non-lossy smart alternate character encoding transformations (unless
+   patch provided)
+ - Pretty-printing HTML: users can use Tidy on the output on entire page
+ - Native content compression, whitespace stripping: use gzip if this is
+   really important
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/VERSION

@@ -0,0 +1 @@
+4.10.0

src/vendor/ezyang/htmlpurifier/WHATSNEW

@@ -0,0 +1,13 @@
+HTML Purifier 4.9.x is a maintenance release, collecting a year
+of accumulated bug fixes plus a few new features.  New features
+include support for min/max-width/height CSS, and rgba/hsl/hsla
+in color specifications.  Major bugfixes include improvements
+in the Serializer cache to avoid chmod'ing directories, better
+entity decoding (we won't accidentally encode entities that occur
+in URLs) and rel="noopener" on links with target attributes,
+to prevent them from overwriting the original frame.
+
+4.9.3 works around an infinite loop bug in PHP 7.1 with the opcode
+cache (and has one other, minor bugfix, avoiding using autoloading
+when testing for DOMDocument presence).  If these bugs do not
+affect you, you do not need to upgrade.

src/vendor/ezyang/htmlpurifier/WYSIWYG

@@ -0,0 +1,20 @@
+
+WYSIWYG - What You See Is What You Get
+    HTML Purifier: A Pretty Good Fit for TinyMCE and FCKeditor
+
+Javascript-based WYSIWYG editors, simply stated, are quite amazing.  But I've
+always been wary about using them due to security issues: they handle the
+client-side magic, but once you've been served a piping hot load of unfiltered
+HTML, what should be done then?  In some situations, you can serve it uncleaned,
+since you only offer these facilities to trusted(?) authors.
+
+Unfortunantely, for blog comments and anonymous input, BBCode, Textile and
+other markup languages still reign supreme.  Put simply: filtering HTML is
+hard work, and these WYSIWYG authors don't offer anything to alleviate that
+trouble.  Therein lies the solution:
+
+HTML Purifier is perfect for filtering pure-HTML input from WYSIWYG editors.
+
+Enough said.
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/composer.json

@@ -0,0 +1,25 @@
+{
+    "name": "ezyang/htmlpurifier",
+    "description": "Standards compliant HTML filter written in PHP",
+    "type": "library",
+    "keywords": ["html"],
+    "homepage": "http://htmlpurifier.org/",
+    "license": "LGPL",
+    "authors": [
+        {
+            "name": "Edward Z. Yang",
+            "email": "admin@htmlpurifier.org",
+            "homepage": "http://ezyang.com"
+        }
+    ],
+    "require": {
+        "php": ">=5.2"
+    },
+    "require-dev": {
+        "simpletest/simpletest": "^1.1"
+    },
+    "autoload": {
+        "psr-0": { "HTMLPurifier": "library/" },
+        "files": ["library/HTMLPurifier.composer.php"]
+    }
+}

src/vendor/ezyang/htmlpurifier/extras/ConfigDoc/HTMLXSLTProcessor.php

@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * Decorator/extender XSLT processor specifically for HTML documents.
+ */
+class ConfigDoc_HTMLXSLTProcessor
+{
+
+    /**
+     * Instance of XSLTProcessor
+     */
+    protected $xsltProcessor;
+
+    public function __construct($proc = false)
+    {
+        if ($proc === false) $proc = new XSLTProcessor();
+        $this->xsltProcessor = $proc;
+    }
+
+    /**
+     * @note Allows a string $xsl filename to be passed
+     */
+    public function importStylesheet($xsl)
+    {
+        if (is_string($xsl)) {
+            $xsl_file = $xsl;
+            $xsl = new DOMDocument();
+            $xsl->load($xsl_file);
+        }
+        return $this->xsltProcessor->importStylesheet($xsl);
+    }
+
+    /**
+     * Transforms an XML file into compatible XHTML based on the stylesheet
+     * @param $xml XML DOM tree, or string filename
+     * @return string HTML output
+     * @todo Rename to transformToXHTML, as transformToHTML is misleading
+     */
+    public function transformToHTML($xml)
+    {
+        if (is_string($xml)) {
+            $dom = new DOMDocument();
+            $dom->load($xml);
+        } else {
+            $dom = $xml;
+        }
+        $out = $this->xsltProcessor->transformToXML($dom);
+
+        // fudges for HTML backwards compatibility
+        // assumes that document is XHTML
+        $out = str_replace('/>', ' />', $out); // <br /> not <br/>
+        $out = str_replace(' xmlns=""', '', $out); // rm unnecessary xmlns
+
+        if (class_exists('Tidy')) {
+            // cleanup output
+            $config = array(
+                'indent'        => true,
+                'output-xhtml'  => true,
+                'wrap'          => 80
+            );
+            $tidy = new Tidy;
+            $tidy->parseString($out, $config, 'utf8');
+            $tidy->cleanRepair();
+            $out = (string) $tidy;
+        }
+
+        return $out;
+    }
+
+    /**
+     * Bulk sets parameters for the XSL stylesheet
+     * @param array $options Associative array of options to set
+     */
+    public function setParameters($options)
+    {
+        foreach ($options as $name => $value) {
+            $this->xsltProcessor->setParameter('', $name, $value);
+        }
+    }
+
+    /**
+     * Forward any other calls to the XSLT processor
+     */
+    public function __call($name, $arguments)
+    {
+        call_user_func_array(array($this->xsltProcessor, $name), $arguments);
+    }
+
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/FSTools.php

@@ -0,0 +1,164 @@
+<?php
+
+/**
+ * Filesystem tools not provided by default; can recursively create, copy
+ * and delete folders. Some template methods are provided for extensibility.
+ *
+ * @note This class must be instantiated to be used, although it does
+ *       not maintain state.
+ */
+class FSTools
+{
+
+    private static $singleton;
+
+    /**
+     * Returns a global instance of FSTools
+     */
+    public static function singleton()
+    {
+        if (empty(FSTools::$singleton)) FSTools::$singleton = new FSTools();
+        return FSTools::$singleton;
+    }
+
+    /**
+     * Sets our global singleton to something else; useful for overloading
+     * functions.
+     */
+    public static function setSingleton($singleton)
+    {
+        FSTools::$singleton = $singleton;
+    }
+
+    /**
+     * Recursively creates a directory
+     * @param string $folder Name of folder to create
+     * @note Adapted from the PHP manual comment 76612
+     */
+    public function mkdirr($folder)
+    {
+        $folders = preg_split("#[\\\\/]#", $folder);
+        $base = '';
+        for($i = 0, $c = count($folders); $i < $c; $i++) {
+            if(empty($folders[$i])) {
+                if (!$i) {
+                    // special case for root level
+                    $base .= DIRECTORY_SEPARATOR;
+                }
+                continue;
+            }
+            $base .= $folders[$i];
+            if(!is_dir($base)){
+                $this->mkdir($base);
+            }
+            $base .= DIRECTORY_SEPARATOR;
+        }
+    }
+
+    /**
+     * Copy a file, or recursively copy a folder and its contents; modified
+     * so that copied files, if PHP, have includes removed
+     * @note Adapted from http://aidanlister.com/repos/v/function.copyr.php
+     */
+    public function copyr($source, $dest)
+    {
+        // Simple copy for a file
+        if (is_file($source)) {
+            return $this->copy($source, $dest);
+        }
+        // Make destination directory
+        if (!is_dir($dest)) {
+            $this->mkdir($dest);
+        }
+        // Loop through the folder
+        $dir = $this->dir($source);
+        while ( false !== ($entry = $dir->read()) ) {
+            // Skip pointers
+            if ($entry == '.' || $entry == '..') {
+                continue;
+            }
+            if (!$this->copyable($entry)) {
+                continue;
+            }
+            // Deep copy directories
+            if ($dest !== "$source/$entry") {
+                $this->copyr("$source/$entry", "$dest/$entry");
+            }
+        }
+        // Clean up
+        $dir->close();
+        return true;
+    }
+
+    /**
+     * Overloadable function that tests a filename for copyability. By
+     * default, everything should be copied; you can restrict things to
+     * ignore hidden files, unreadable files, etc. This function
+     * applies to copyr().
+     */
+    public function copyable($file)
+    {
+        return true;
+    }
+
+    /**
+     * Delete a file, or a folder and its contents
+     * @note Adapted from http://aidanlister.com/repos/v/function.rmdirr.php
+     */
+    public function rmdirr($dirname)
+    {
+        // Sanity check
+        if (!$this->file_exists($dirname)) {
+            return false;
+        }
+
+        // Simple delete for a file
+        if ($this->is_file($dirname) || $this->is_link($dirname)) {
+            return $this->unlink($dirname);
+        }
+
+        // Loop through the folder
+        $dir = $this->dir($dirname);
+        while (false !== $entry = $dir->read()) {
+            // Skip pointers
+            if ($entry == '.' || $entry == '..') {
+                continue;
+            }
+            // Recurse
+            $this->rmdirr($dirname . DIRECTORY_SEPARATOR . $entry);
+        }
+
+        // Clean up
+        $dir->close();
+        return $this->rmdir($dirname);
+    }
+
+    /**
+     * Recursively globs a directory.
+     */
+    public function globr($dir, $pattern, $flags = NULL)
+    {
+        $files = $this->glob("$dir/$pattern", $flags);
+        if ($files === false) $files = array();
+        $sub_dirs = $this->glob("$dir/*", GLOB_ONLYDIR);
+        if ($sub_dirs === false) $sub_dirs = array();
+        foreach ($sub_dirs as $sub_dir) {
+            $sub_files = $this->globr($sub_dir, $pattern, $flags);
+            $files = array_merge($files, $sub_files);
+        }
+        return $files;
+    }
+
+    /**
+     * Allows for PHP functions to be called and be stubbed.
+     * @warning This function will not work for functions that need
+     *      to pass references; manually define a stub function for those.
+     */
+    public function __call($name, $args)
+    {
+        return call_user_func_array($name, $args);
+    }
+
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/FSTools/File.php

@@ -0,0 +1,141 @@
+<?php
+
+/**
+ * Represents a file in the filesystem
+ *
+ * @warning Be sure to distinguish between get() and write() versus
+ *      read() and put(), the former operates on the entire file, while
+ *      the latter operates on a handle.
+ */
+class FSTools_File
+{
+
+    /** Filename of file this object represents */
+    protected $name;
+
+    /** Handle for the file */
+    protected $handle = false;
+
+    /** Instance of FSTools for interfacing with filesystem */
+    protected $fs;
+
+    /**
+     * Filename of file you wish to instantiate.
+     * @note This file need not exist
+     */
+    public function __construct($name, $fs = false)
+    {
+        $this->name = $name;
+        $this->fs = $fs ? $fs : FSTools::singleton();
+    }
+
+    /** Returns the filename of the file. */
+    public function getName() {return $this->name;}
+
+    /** Returns directory of the file without trailing slash */
+    public function getDirectory() {return $this->fs->dirname($this->name);}
+
+    /**
+     * Retrieves the contents of a file
+     * @todo Throw an exception if file doesn't exist
+     */
+    public function get()
+    {
+        return $this->fs->file_get_contents($this->name);
+    }
+
+    /** Writes contents to a file, creates new file if necessary */
+    public function write($contents)
+    {
+        return $this->fs->file_put_contents($this->name, $contents);
+    }
+
+    /** Deletes the file */
+    public function delete()
+    {
+        return $this->fs->unlink($this->name);
+    }
+
+    /** Returns true if file exists and is a file. */
+    public function exists()
+    {
+        return $this->fs->is_file($this->name);
+    }
+
+    /** Returns last file modification time */
+    public function getMTime()
+    {
+        return $this->fs->filemtime($this->name);
+    }
+
+    /**
+     * Chmod a file
+     * @note We ignore errors because of some weird owner trickery due
+     *       to SVN duality
+     */
+    public function chmod($octal_code)
+    {
+        return @$this->fs->chmod($this->name, $octal_code);
+    }
+
+    /** Opens file's handle */
+    public function open($mode)
+    {
+        if ($this->handle) $this->close();
+        $this->handle = $this->fs->fopen($this->name, $mode);
+        return true;
+    }
+
+    /** Closes file's handle */
+    public function close()
+    {
+        if (!$this->handle) return false;
+        $status = $this->fs->fclose($this->handle);
+        $this->handle = false;
+        return $status;
+    }
+
+    /** Retrieves a line from an open file, with optional max length $length */
+    public function getLine($length = null)
+    {
+        if (!$this->handle) $this->open('r');
+        if ($length === null) return $this->fs->fgets($this->handle);
+        else return $this->fs->fgets($this->handle, $length);
+    }
+
+    /** Retrieves a character from an open file */
+    public function getChar()
+    {
+        if (!$this->handle) $this->open('r');
+        return $this->fs->fgetc($this->handle);
+    }
+
+    /** Retrieves an $length bytes of data from an open data */
+    public function read($length)
+    {
+        if (!$this->handle) $this->open('r');
+        return $this->fs->fread($this->handle, $length);
+    }
+
+    /** Writes to an open file */
+    public function put($string)
+    {
+        if (!$this->handle) $this->open('a');
+        return $this->fs->fwrite($this->handle, $string);
+    }
+
+    /** Returns TRUE if the end of the file has been reached */
+    public function eof()
+    {
+        if (!$this->handle) return true;
+        return $this->fs->feof($this->handle);
+    }
+
+    public function __destruct()
+    {
+        if ($this->handle) $this->close();
+    }
+
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.auto.php

@@ -0,0 +1,11 @@
+<?php
+
+/**
+ * This is a stub include that automatically configures the include path.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+require_once 'HTMLPurifierExtras.php';
+require_once 'HTMLPurifierExtras.autoload.php';
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.autoload-legacy.php

@@ -0,0 +1,15 @@
+<?php
+
+/**
+ * @file
+ * Legacy autoloader for systems lacking spl_autoload_register
+ *
+ * Must be separate to prevent deprecation warning on PHP 7.2
+ */
+
+function __autoload($class)
+{
+    return HTMLPurifierExtras::autoload($class);
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.autoload.php

@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * @file
+ * Convenience file that registers autoload handler for HTML Purifier.
+ *
+ * @warning
+ *      This autoloader does not contain the compatibility code seen in
+ *      HTMLPurifier_Bootstrap; the user is expected to make any necessary
+ *      changes to use this library.
+ */
+
+if (function_exists('spl_autoload_register')) {
+    spl_autoload_register(array('HTMLPurifierExtras', 'autoload'));
+    if (function_exists('__autoload')) {
+        // Be polite and ensure that userland autoload gets retained
+        spl_autoload_register('__autoload');
+    }
+} elseif (!function_exists('__autoload')) {
+    require dirname(__FILE__) . '/HTMLPurifierExtras.autoload-legacy.php';
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/HTMLPurifierExtras.php

@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * Meta-class for HTML Purifier's extra class hierarchies, similar to
+ * HTMLPurifier_Bootstrap.
+ */
+class HTMLPurifierExtras
+{
+
+    public static function autoload($class)
+    {
+        $path = HTMLPurifierExtras::getPath($class);
+        if (!$path) return false;
+        require $path;
+        return true;
+    }
+
+    public static function getPath($class)
+    {
+        if (
+            strncmp('FSTools', $class, 7) !== 0 &&
+            strncmp('ConfigDoc', $class, 9) !== 0
+        ) return false;
+        // Custom implementations can go here
+        // Standard implementation:
+        return str_replace('_', '/', $class) . '.php';
+    }
+
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/extras/README

@@ -0,0 +1,32 @@
+
+HTML Purifier Extras
+    The Method Behind The Madness!
+
+The extras/ folder in HTML Purifier contains--you guessed it--extra things
+for HTML Purifier.  Specifically, these are two extra libraries called
+FSTools and ConfigSchema.  They're extra for a reason: you don't need them
+if you're using HTML Purifier for normal usage: filtering HTML.  However,
+if you're a developer, and would like to test HTML Purifier, or need to
+use one of HTML Purifier's maintenance scripts, chances are they'll need
+these libraries. Who knows: maybe you'll find them useful too!
+
+Here are the libraries:
+
+
+FSTools
+-------
+
+Short for File System Tools, this is a poor-man's object-oriented wrapper for
+the filesystem. It currently consists of two classes:
+
+- FSTools: This is a singleton that contains a manner of useful functions
+  such as recursive glob, directory removal, etc, as well as the ability
+  to call arbitrary native PHP functions through it like $FS->fopen(...).
+  This makes it a lot simpler to mock these filesystem calls for unit testing.
+
+- FSTools_File: This object represents a single file, and has almost any
+  method imaginable one would need.
+
+Check the files themselves for more information.
+
+    vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.auto.php

@@ -0,0 +1,11 @@
+<?php
+
+/**
+ * This is a stub include that automatically configures the include path.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+require_once 'HTMLPurifier/Bootstrap.php';
+require_once 'HTMLPurifier.autoload.php';
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload-legacy.php

@@ -0,0 +1,15 @@
+<?php
+
+/**
+ * @file
+ * Legacy autoloader for systems lacking spl_autoload_register
+ *
+ * Must be separate to prevent deprecation warning on PHP 7.2
+ */
+
+function __autoload($class)
+{
+    return HTMLPurifier_Bootstrap::autoload($class);
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php

@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * @file
+ * Convenience file that registers autoload handler for HTML Purifier.
+ * It also does some sanity checks.
+ */
+
+if (function_exists('spl_autoload_register') && function_exists('spl_autoload_unregister')) {
+    // We need unregister for our pre-registering functionality
+    HTMLPurifier_Bootstrap::registerAutoload();
+    if (function_exists('__autoload')) {
+        // Be polite and ensure that userland autoload gets retained
+        spl_autoload_register('__autoload');
+    }
+} elseif (!function_exists('__autoload')) {
+    require dirname(__FILE__) . '/HTMLPurifier.autoload-legacy.php';
+}
+
+if (ini_get('zend.ze1_compatibility_mode')) {
+    trigger_error("HTML Purifier is not compatible with zend.ze1_compatibility_mode; please turn it off", E_USER_ERROR);
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.composer.php

@@ -0,0 +1,4 @@
+<?php
+if (!defined('HTMLPURIFIER_PREFIX')) {
+    define('HTMLPURIFIER_PREFIX', dirname(__FILE__));
+}

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.func.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * @file
+ * Defines a function wrapper for HTML Purifier for quick use.
+ * @note ''HTMLPurifier()'' is NOT the same as ''new HTMLPurifier()''
+ */
+
+/**
+ * Purify HTML.
+ * @param string $html String HTML to purify
+ * @param mixed $config Configuration to use, can be any value accepted by
+ *        HTMLPurifier_Config::create()
+ * @return string
+ */
+function HTMLPurifier($html, $config = null)
+{
+    static $purifier = false;
+    if (!$purifier) {
+        $purifier = new HTMLPurifier();
+    }
+    return $purifier->purify($html, $config);
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php

@@ -0,0 +1,234 @@
+<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. Use this if performance is a
+ * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
+ * FILE, changes will be overwritten the next time the script is run.
+ *
+ * @version 4.10.0
+ *
+ * @warning
+ *      You must *not* include any other HTML Purifier files before this file,
+ *      because 'require' not 'require_once' is used.
+ *
+ * @warning
+ *      This file requires that the include path contains the HTML Purifier
+ *      library directory; this is not auto-set.
+ */
+
+require 'HTMLPurifier.php';
+require 'HTMLPurifier/Arborize.php';
+require 'HTMLPurifier/AttrCollections.php';
+require 'HTMLPurifier/AttrDef.php';
+require 'HTMLPurifier/AttrTransform.php';
+require 'HTMLPurifier/AttrTypes.php';
+require 'HTMLPurifier/AttrValidator.php';
+require 'HTMLPurifier/Bootstrap.php';
+require 'HTMLPurifier/Definition.php';
+require 'HTMLPurifier/CSSDefinition.php';
+require 'HTMLPurifier/ChildDef.php';
+require 'HTMLPurifier/Config.php';
+require 'HTMLPurifier/ConfigSchema.php';
+require 'HTMLPurifier/ContentSets.php';
+require 'HTMLPurifier/Context.php';
+require 'HTMLPurifier/DefinitionCache.php';
+require 'HTMLPurifier/DefinitionCacheFactory.php';
+require 'HTMLPurifier/Doctype.php';
+require 'HTMLPurifier/DoctypeRegistry.php';
+require 'HTMLPurifier/ElementDef.php';
+require 'HTMLPurifier/Encoder.php';
+require 'HTMLPurifier/EntityLookup.php';
+require 'HTMLPurifier/EntityParser.php';
+require 'HTMLPurifier/ErrorCollector.php';
+require 'HTMLPurifier/ErrorStruct.php';
+require 'HTMLPurifier/Exception.php';
+require 'HTMLPurifier/Filter.php';
+require 'HTMLPurifier/Generator.php';
+require 'HTMLPurifier/HTMLDefinition.php';
+require 'HTMLPurifier/HTMLModule.php';
+require 'HTMLPurifier/HTMLModuleManager.php';
+require 'HTMLPurifier/IDAccumulator.php';
+require 'HTMLPurifier/Injector.php';
+require 'HTMLPurifier/Language.php';
+require 'HTMLPurifier/LanguageFactory.php';
+require 'HTMLPurifier/Length.php';
+require 'HTMLPurifier/Lexer.php';
+require 'HTMLPurifier/Node.php';
+require 'HTMLPurifier/PercentEncoder.php';
+require 'HTMLPurifier/PropertyList.php';
+require 'HTMLPurifier/PropertyListIterator.php';
+require 'HTMLPurifier/Queue.php';
+require 'HTMLPurifier/Strategy.php';
+require 'HTMLPurifier/StringHash.php';
+require 'HTMLPurifier/StringHashParser.php';
+require 'HTMLPurifier/TagTransform.php';
+require 'HTMLPurifier/Token.php';
+require 'HTMLPurifier/TokenFactory.php';
+require 'HTMLPurifier/URI.php';
+require 'HTMLPurifier/URIDefinition.php';
+require 'HTMLPurifier/URIFilter.php';
+require 'HTMLPurifier/URIParser.php';
+require 'HTMLPurifier/URIScheme.php';
+require 'HTMLPurifier/URISchemeRegistry.php';
+require 'HTMLPurifier/UnitConverter.php';
+require 'HTMLPurifier/VarParser.php';
+require 'HTMLPurifier/VarParserException.php';
+require 'HTMLPurifier/Zipper.php';
+require 'HTMLPurifier/AttrDef/CSS.php';
+require 'HTMLPurifier/AttrDef/Clone.php';
+require 'HTMLPurifier/AttrDef/Enum.php';
+require 'HTMLPurifier/AttrDef/Integer.php';
+require 'HTMLPurifier/AttrDef/Lang.php';
+require 'HTMLPurifier/AttrDef/Switch.php';
+require 'HTMLPurifier/AttrDef/Text.php';
+require 'HTMLPurifier/AttrDef/URI.php';
+require 'HTMLPurifier/AttrDef/CSS/Number.php';
+require 'HTMLPurifier/AttrDef/CSS/AlphaValue.php';
+require 'HTMLPurifier/AttrDef/CSS/Background.php';
+require 'HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
+require 'HTMLPurifier/AttrDef/CSS/Border.php';
+require 'HTMLPurifier/AttrDef/CSS/Color.php';
+require 'HTMLPurifier/AttrDef/CSS/Composite.php';
+require 'HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
+require 'HTMLPurifier/AttrDef/CSS/Filter.php';
+require 'HTMLPurifier/AttrDef/CSS/Font.php';
+require 'HTMLPurifier/AttrDef/CSS/FontFamily.php';
+require 'HTMLPurifier/AttrDef/CSS/Ident.php';
+require 'HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
+require 'HTMLPurifier/AttrDef/CSS/Length.php';
+require 'HTMLPurifier/AttrDef/CSS/ListStyle.php';
+require 'HTMLPurifier/AttrDef/CSS/Multiple.php';
+require 'HTMLPurifier/AttrDef/CSS/Percentage.php';
+require 'HTMLPurifier/AttrDef/CSS/TextDecoration.php';
+require 'HTMLPurifier/AttrDef/CSS/URI.php';
+require 'HTMLPurifier/AttrDef/HTML/Bool.php';
+require 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
+require 'HTMLPurifier/AttrDef/HTML/Class.php';
+require 'HTMLPurifier/AttrDef/HTML/Color.php';
+require 'HTMLPurifier/AttrDef/HTML/FrameTarget.php';
+require 'HTMLPurifier/AttrDef/HTML/ID.php';
+require 'HTMLPurifier/AttrDef/HTML/Pixels.php';
+require 'HTMLPurifier/AttrDef/HTML/Length.php';
+require 'HTMLPurifier/AttrDef/HTML/LinkTypes.php';
+require 'HTMLPurifier/AttrDef/HTML/MultiLength.php';
+require 'HTMLPurifier/AttrDef/URI/Email.php';
+require 'HTMLPurifier/AttrDef/URI/Host.php';
+require 'HTMLPurifier/AttrDef/URI/IPv4.php';
+require 'HTMLPurifier/AttrDef/URI/IPv6.php';
+require 'HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
+require 'HTMLPurifier/AttrTransform/Background.php';
+require 'HTMLPurifier/AttrTransform/BdoDir.php';
+require 'HTMLPurifier/AttrTransform/BgColor.php';
+require 'HTMLPurifier/AttrTransform/BoolToCSS.php';
+require 'HTMLPurifier/AttrTransform/Border.php';
+require 'HTMLPurifier/AttrTransform/EnumToCSS.php';
+require 'HTMLPurifier/AttrTransform/ImgRequired.php';
+require 'HTMLPurifier/AttrTransform/ImgSpace.php';
+require 'HTMLPurifier/AttrTransform/Input.php';
+require 'HTMLPurifier/AttrTransform/Lang.php';
+require 'HTMLPurifier/AttrTransform/Length.php';
+require 'HTMLPurifier/AttrTransform/Name.php';
+require 'HTMLPurifier/AttrTransform/NameSync.php';
+require 'HTMLPurifier/AttrTransform/Nofollow.php';
+require 'HTMLPurifier/AttrTransform/SafeEmbed.php';
+require 'HTMLPurifier/AttrTransform/SafeObject.php';
+require 'HTMLPurifier/AttrTransform/SafeParam.php';
+require 'HTMLPurifier/AttrTransform/ScriptRequired.php';
+require 'HTMLPurifier/AttrTransform/TargetBlank.php';
+require 'HTMLPurifier/AttrTransform/TargetNoopener.php';
+require 'HTMLPurifier/AttrTransform/TargetNoreferrer.php';
+require 'HTMLPurifier/AttrTransform/Textarea.php';
+require 'HTMLPurifier/ChildDef/Chameleon.php';
+require 'HTMLPurifier/ChildDef/Custom.php';
+require 'HTMLPurifier/ChildDef/Empty.php';
+require 'HTMLPurifier/ChildDef/List.php';
+require 'HTMLPurifier/ChildDef/Required.php';
+require 'HTMLPurifier/ChildDef/Optional.php';
+require 'HTMLPurifier/ChildDef/StrictBlockquote.php';
+require 'HTMLPurifier/ChildDef/Table.php';
+require 'HTMLPurifier/DefinitionCache/Decorator.php';
+require 'HTMLPurifier/DefinitionCache/Null.php';
+require 'HTMLPurifier/DefinitionCache/Serializer.php';
+require 'HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
+require 'HTMLPurifier/DefinitionCache/Decorator/Memory.php';
+require 'HTMLPurifier/HTMLModule/Bdo.php';
+require 'HTMLPurifier/HTMLModule/CommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Edit.php';
+require 'HTMLPurifier/HTMLModule/Forms.php';
+require 'HTMLPurifier/HTMLModule/Hypertext.php';
+require 'HTMLPurifier/HTMLModule/Iframe.php';
+require 'HTMLPurifier/HTMLModule/Image.php';
+require 'HTMLPurifier/HTMLModule/Legacy.php';
+require 'HTMLPurifier/HTMLModule/List.php';
+require 'HTMLPurifier/HTMLModule/Name.php';
+require 'HTMLPurifier/HTMLModule/Nofollow.php';
+require 'HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Object.php';
+require 'HTMLPurifier/HTMLModule/Presentation.php';
+require 'HTMLPurifier/HTMLModule/Proprietary.php';
+require 'HTMLPurifier/HTMLModule/Ruby.php';
+require 'HTMLPurifier/HTMLModule/SafeEmbed.php';
+require 'HTMLPurifier/HTMLModule/SafeObject.php';
+require 'HTMLPurifier/HTMLModule/SafeScripting.php';
+require 'HTMLPurifier/HTMLModule/Scripting.php';
+require 'HTMLPurifier/HTMLModule/StyleAttribute.php';
+require 'HTMLPurifier/HTMLModule/Tables.php';
+require 'HTMLPurifier/HTMLModule/Target.php';
+require 'HTMLPurifier/HTMLModule/TargetBlank.php';
+require 'HTMLPurifier/HTMLModule/TargetNoopener.php';
+require 'HTMLPurifier/HTMLModule/TargetNoreferrer.php';
+require 'HTMLPurifier/HTMLModule/Text.php';
+require 'HTMLPurifier/HTMLModule/Tidy.php';
+require 'HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Name.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
+require 'HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Strict.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Transitional.php';
+require 'HTMLPurifier/HTMLModule/Tidy/XHTML.php';
+require 'HTMLPurifier/Injector/AutoParagraph.php';
+require 'HTMLPurifier/Injector/DisplayLinkURI.php';
+require 'HTMLPurifier/Injector/Linkify.php';
+require 'HTMLPurifier/Injector/PurifierLinkify.php';
+require 'HTMLPurifier/Injector/RemoveEmpty.php';
+require 'HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
+require 'HTMLPurifier/Injector/SafeObject.php';
+require 'HTMLPurifier/Lexer/DOMLex.php';
+require 'HTMLPurifier/Lexer/DirectLex.php';
+require 'HTMLPurifier/Node/Comment.php';
+require 'HTMLPurifier/Node/Element.php';
+require 'HTMLPurifier/Node/Text.php';
+require 'HTMLPurifier/Strategy/Composite.php';
+require 'HTMLPurifier/Strategy/Core.php';
+require 'HTMLPurifier/Strategy/FixNesting.php';
+require 'HTMLPurifier/Strategy/MakeWellFormed.php';
+require 'HTMLPurifier/Strategy/RemoveForeignElements.php';
+require 'HTMLPurifier/Strategy/ValidateAttributes.php';
+require 'HTMLPurifier/TagTransform/Font.php';
+require 'HTMLPurifier/TagTransform/Simple.php';
+require 'HTMLPurifier/Token/Comment.php';
+require 'HTMLPurifier/Token/Tag.php';
+require 'HTMLPurifier/Token/Empty.php';
+require 'HTMLPurifier/Token/End.php';
+require 'HTMLPurifier/Token/Start.php';
+require 'HTMLPurifier/Token/Text.php';
+require 'HTMLPurifier/URIFilter/DisableExternal.php';
+require 'HTMLPurifier/URIFilter/DisableExternalResources.php';
+require 'HTMLPurifier/URIFilter/DisableResources.php';
+require 'HTMLPurifier/URIFilter/HostBlacklist.php';
+require 'HTMLPurifier/URIFilter/MakeAbsolute.php';
+require 'HTMLPurifier/URIFilter/Munge.php';
+require 'HTMLPurifier/URIFilter/SafeIframe.php';
+require 'HTMLPurifier/URIScheme/data.php';
+require 'HTMLPurifier/URIScheme/file.php';
+require 'HTMLPurifier/URIScheme/ftp.php';
+require 'HTMLPurifier/URIScheme/http.php';
+require 'HTMLPurifier/URIScheme/https.php';
+require 'HTMLPurifier/URIScheme/mailto.php';
+require 'HTMLPurifier/URIScheme/news.php';
+require 'HTMLPurifier/URIScheme/nntp.php';
+require 'HTMLPurifier/URIScheme/tel.php';
+require 'HTMLPurifier/VarParser/Flexible.php';
+require 'HTMLPurifier/VarParser/Native.php';

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.kses.php

@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * @file
+ * Emulation layer for code that used kses(), substituting in HTML Purifier.
+ */
+
+require_once dirname(__FILE__) . '/HTMLPurifier.auto.php';
+
+function kses($string, $allowed_html, $allowed_protocols = null)
+{
+    $config = HTMLPurifier_Config::createDefault();
+    $allowed_elements = array();
+    $allowed_attributes = array();
+    foreach ($allowed_html as $element => $attributes) {
+        $allowed_elements[$element] = true;
+        foreach ($attributes as $attribute => $x) {
+            $allowed_attributes["$element.$attribute"] = true;
+        }
+    }
+    $config->set('HTML.AllowedElements', $allowed_elements);
+    $config->set('HTML.AllowedAttributes', $allowed_attributes);
+    if ($allowed_protocols !== null) {
+        $config->set('URI.AllowedSchemes', $allowed_protocols);
+    }
+    $purifier = new HTMLPurifier($config);
+    return $purifier->purify($string);
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.path.php

@@ -0,0 +1,11 @@
+<?php
+
+/**
+ * @file
+ * Convenience stub file that adds HTML Purifier's library file to the path
+ * without any other side-effects.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php

@@ -0,0 +1,292 @@
+<?php
+
+/*! @mainpage
+ *
+ * HTML Purifier is an HTML filter that will take an arbitrary snippet of
+ * HTML and rigorously test, validate and filter it into a version that
+ * is safe for output onto webpages. It achieves this by:
+ *
+ *  -# Lexing (parsing into tokens) the document,
+ *  -# Executing various strategies on the tokens:
+ *      -# Removing all elements not in the whitelist,
+ *      -# Making the tokens well-formed,
+ *      -# Fixing the nesting of the nodes, and
+ *      -# Validating attributes of the nodes; and
+ *  -# Generating HTML from the purified tokens.
+ *
+ * However, most users will only need to interface with the HTMLPurifier
+ * and HTMLPurifier_Config.
+ */
+
+/*
+    HTML Purifier 4.10.0 - Standards Compliant HTML Filtering
+    Copyright (C) 2006-2008 Edward Z. Yang
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/**
+ * Facade that coordinates HTML Purifier's subsystems in order to purify HTML.
+ *
+ * @note There are several points in which configuration can be specified
+ *       for HTML Purifier.  The precedence of these (from lowest to
+ *       highest) is as follows:
+ *          -# Instance: new HTMLPurifier($config)
+ *          -# Invocation: purify($html, $config)
+ *       These configurations are entirely independent of each other and
+ *       are *not* merged (this behavior may change in the future).
+ *
+ * @todo We need an easier way to inject strategies using the configuration
+ *       object.
+ */
+class HTMLPurifier
+{
+
+    /**
+     * Version of HTML Purifier.
+     * @type string
+     */
+    public $version = '4.10.0';
+
+    /**
+     * Constant with version of HTML Purifier.
+     */
+    const VERSION = '4.10.0';
+
+    /**
+     * Global configuration object.
+     * @type HTMLPurifier_Config
+     */
+    public $config;
+
+    /**
+     * Array of extra filter objects to run on HTML,
+     * for backwards compatibility.
+     * @type HTMLPurifier_Filter[]
+     */
+    private $filters = array();
+
+    /**
+     * Single instance of HTML Purifier.
+     * @type HTMLPurifier
+     */
+    private static $instance;
+
+    /**
+     * @type HTMLPurifier_Strategy_Core
+     */
+    protected $strategy;
+
+    /**
+     * @type HTMLPurifier_Generator
+     */
+    protected $generator;
+
+    /**
+     * Resultant context of last run purification.
+     * Is an array of contexts if the last called method was purifyArray().
+     * @type HTMLPurifier_Context
+     */
+    public $context;
+
+    /**
+     * Initializes the purifier.
+     *
+     * @param HTMLPurifier_Config|mixed $config Optional HTMLPurifier_Config object
+     *                for all instances of the purifier, if omitted, a default
+     *                configuration is supplied (which can be overridden on a
+     *                per-use basis).
+     *                The parameter can also be any type that
+     *                HTMLPurifier_Config::create() supports.
+     */
+    public function __construct($config = null)
+    {
+        $this->config = HTMLPurifier_Config::create($config);
+        $this->strategy = new HTMLPurifier_Strategy_Core();
+    }
+
+    /**
+     * Adds a filter to process the output. First come first serve
+     *
+     * @param HTMLPurifier_Filter $filter HTMLPurifier_Filter object
+     */
+    public function addFilter($filter)
+    {
+        trigger_error(
+            'HTMLPurifier->addFilter() is deprecated, use configuration directives' .
+            ' in the Filter namespace or Filter.Custom',
+            E_USER_WARNING
+        );
+        $this->filters[] = $filter;
+    }
+
+    /**
+     * Filters an HTML snippet/document to be XSS-free and standards-compliant.
+     *
+     * @param string $html String of HTML to purify
+     * @param HTMLPurifier_Config $config Config object for this operation,
+     *                if omitted, defaults to the config object specified during this
+     *                object's construction. The parameter can also be any type
+     *                that HTMLPurifier_Config::create() supports.
+     *
+     * @return string Purified HTML
+     */
+    public function purify($html, $config = null)
+    {
+        // :TODO: make the config merge in, instead of replace
+        $config = $config ? HTMLPurifier_Config::create($config) : $this->config;
+
+        // implementation is partially environment dependant, partially
+        // configuration dependant
+        $lexer = HTMLPurifier_Lexer::create($config);
+
+        $context = new HTMLPurifier_Context();
+
+        // setup HTML generator
+        $this->generator = new HTMLPurifier_Generator($config, $context);
+        $context->register('Generator', $this->generator);
+
+        // set up global context variables
+        if ($config->get('Core.CollectErrors')) {
+            // may get moved out if other facilities use it
+            $language_factory = HTMLPurifier_LanguageFactory::instance();
+            $language = $language_factory->create($config, $context);
+            $context->register('Locale', $language);
+
+            $error_collector = new HTMLPurifier_ErrorCollector($context);
+            $context->register('ErrorCollector', $error_collector);
+        }
+
+        // setup id_accumulator context, necessary due to the fact that
+        // AttrValidator can be called from many places
+        $id_accumulator = HTMLPurifier_IDAccumulator::build($config, $context);
+        $context->register('IDAccumulator', $id_accumulator);
+
+        $html = HTMLPurifier_Encoder::convertToUTF8($html, $config, $context);
+
+        // setup filters
+        $filter_flags = $config->getBatch('Filter');
+        $custom_filters = $filter_flags['Custom'];
+        unset($filter_flags['Custom']);
+        $filters = array();
+        foreach ($filter_flags as $filter => $flag) {
+            if (!$flag) {
+                continue;
+            }
+            if (strpos($filter, '.') !== false) {
+                continue;
+            }
+            $class = "HTMLPurifier_Filter_$filter";
+            $filters[] = new $class;
+        }
+        foreach ($custom_filters as $filter) {
+            // maybe "HTMLPurifier_Filter_$filter", but be consistent with AutoFormat
+            $filters[] = $filter;
+        }
+        $filters = array_merge($filters, $this->filters);
+        // maybe prepare(), but later
+
+        for ($i = 0, $filter_size = count($filters); $i < $filter_size; $i++) {
+            $html = $filters[$i]->preFilter($html, $config, $context);
+        }
+
+        // purified HTML
+        $html =
+            $this->generator->generateFromTokens(
+                // list of tokens
+                $this->strategy->execute(
+                    // list of un-purified tokens
+                    $lexer->tokenizeHTML(
+                        // un-purified HTML
+                        $html,
+                        $config,
+                        $context
+                    ),
+                    $config,
+                    $context
+                )
+            );
+
+        for ($i = $filter_size - 1; $i >= 0; $i--) {
+            $html = $filters[$i]->postFilter($html, $config, $context);
+        }
+
+        $html = HTMLPurifier_Encoder::convertFromUTF8($html, $config, $context);
+        $this->context =& $context;
+        return $html;
+    }
+
+    /**
+     * Filters an array of HTML snippets
+     *
+     * @param string[] $array_of_html Array of html snippets
+     * @param HTMLPurifier_Config $config Optional config object for this operation.
+     *                See HTMLPurifier::purify() for more details.
+     *
+     * @return string[] Array of purified HTML
+     */
+    public function purifyArray($array_of_html, $config = null)
+    {
+        $context_array = array();
+        foreach ($array_of_html as $key => $html) {
+            $array_of_html[$key] = $this->purify($html, $config);
+            $context_array[$key] = $this->context;
+        }
+        $this->context = $context_array;
+        return $array_of_html;
+    }
+
+    /**
+     * Singleton for enforcing just one HTML Purifier in your system
+     *
+     * @param HTMLPurifier|HTMLPurifier_Config $prototype Optional prototype
+     *                   HTMLPurifier instance to overload singleton with,
+     *                   or HTMLPurifier_Config instance to configure the
+     *                   generated version with.
+     *
+     * @return HTMLPurifier
+     */
+    public static function instance($prototype = null)
+    {
+        if (!self::$instance || $prototype) {
+            if ($prototype instanceof HTMLPurifier) {
+                self::$instance = $prototype;
+            } elseif ($prototype) {
+                self::$instance = new HTMLPurifier($prototype);
+            } else {
+                self::$instance = new HTMLPurifier();
+            }
+        }
+        return self::$instance;
+    }
+
+    /**
+     * Singleton for enforcing just one HTML Purifier in your system
+     *
+     * @param HTMLPurifier|HTMLPurifier_Config $prototype Optional prototype
+     *                   HTMLPurifier instance to overload singleton with,
+     *                   or HTMLPurifier_Config instance to configure the
+     *                   generated version with.
+     *
+     * @return HTMLPurifier
+     * @note Backwards compatibility, see instance()
+     */
+    public static function getInstance($prototype = null)
+    {
+        return HTMLPurifier::instance($prototype);
+    }
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php

@@ -0,0 +1,228 @@
+<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. This is a convenience stub that
+ * includes all files using dirname(__FILE__) and require_once. PLEASE DO NOT
+ * EDIT THIS FILE, changes will be overwritten the next time the script is run.
+ *
+ * Changes to include_path are not necessary.
+ */
+
+$__dir = dirname(__FILE__);
+
+require_once $__dir . '/HTMLPurifier.php';
+require_once $__dir . '/HTMLPurifier/Arborize.php';
+require_once $__dir . '/HTMLPurifier/AttrCollections.php';
+require_once $__dir . '/HTMLPurifier/AttrDef.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform.php';
+require_once $__dir . '/HTMLPurifier/AttrTypes.php';
+require_once $__dir . '/HTMLPurifier/AttrValidator.php';
+require_once $__dir . '/HTMLPurifier/Bootstrap.php';
+require_once $__dir . '/HTMLPurifier/Definition.php';
+require_once $__dir . '/HTMLPurifier/CSSDefinition.php';
+require_once $__dir . '/HTMLPurifier/ChildDef.php';
+require_once $__dir . '/HTMLPurifier/Config.php';
+require_once $__dir . '/HTMLPurifier/ConfigSchema.php';
+require_once $__dir . '/HTMLPurifier/ContentSets.php';
+require_once $__dir . '/HTMLPurifier/Context.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCacheFactory.php';
+require_once $__dir . '/HTMLPurifier/Doctype.php';
+require_once $__dir . '/HTMLPurifier/DoctypeRegistry.php';
+require_once $__dir . '/HTMLPurifier/ElementDef.php';
+require_once $__dir . '/HTMLPurifier/Encoder.php';
+require_once $__dir . '/HTMLPurifier/EntityLookup.php';
+require_once $__dir . '/HTMLPurifier/EntityParser.php';
+require_once $__dir . '/HTMLPurifier/ErrorCollector.php';
+require_once $__dir . '/HTMLPurifier/ErrorStruct.php';
+require_once $__dir . '/HTMLPurifier/Exception.php';
+require_once $__dir . '/HTMLPurifier/Filter.php';
+require_once $__dir . '/HTMLPurifier/Generator.php';
+require_once $__dir . '/HTMLPurifier/HTMLDefinition.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule.php';
+require_once $__dir . '/HTMLPurifier/HTMLModuleManager.php';
+require_once $__dir . '/HTMLPurifier/IDAccumulator.php';
+require_once $__dir . '/HTMLPurifier/Injector.php';
+require_once $__dir . '/HTMLPurifier/Language.php';
+require_once $__dir . '/HTMLPurifier/LanguageFactory.php';
+require_once $__dir . '/HTMLPurifier/Length.php';
+require_once $__dir . '/HTMLPurifier/Lexer.php';
+require_once $__dir . '/HTMLPurifier/Node.php';
+require_once $__dir . '/HTMLPurifier/PercentEncoder.php';
+require_once $__dir . '/HTMLPurifier/PropertyList.php';
+require_once $__dir . '/HTMLPurifier/PropertyListIterator.php';
+require_once $__dir . '/HTMLPurifier/Queue.php';
+require_once $__dir . '/HTMLPurifier/Strategy.php';
+require_once $__dir . '/HTMLPurifier/StringHash.php';
+require_once $__dir . '/HTMLPurifier/StringHashParser.php';
+require_once $__dir . '/HTMLPurifier/TagTransform.php';
+require_once $__dir . '/HTMLPurifier/Token.php';
+require_once $__dir . '/HTMLPurifier/TokenFactory.php';
+require_once $__dir . '/HTMLPurifier/URI.php';
+require_once $__dir . '/HTMLPurifier/URIDefinition.php';
+require_once $__dir . '/HTMLPurifier/URIFilter.php';
+require_once $__dir . '/HTMLPurifier/URIParser.php';
+require_once $__dir . '/HTMLPurifier/URIScheme.php';
+require_once $__dir . '/HTMLPurifier/URISchemeRegistry.php';
+require_once $__dir . '/HTMLPurifier/UnitConverter.php';
+require_once $__dir . '/HTMLPurifier/VarParser.php';
+require_once $__dir . '/HTMLPurifier/VarParserException.php';
+require_once $__dir . '/HTMLPurifier/Zipper.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Clone.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Enum.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Integer.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Lang.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Switch.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Text.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Number.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/AlphaValue.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Background.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Border.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Composite.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Filter.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Font.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/FontFamily.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Ident.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ListStyle.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Multiple.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Percentage.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/TextDecoration.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/URI.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Bool.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Nmtokens.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Class.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/FrameTarget.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ID.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Pixels.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/LinkTypes.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/MultiLength.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Host.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv4.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv6.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Background.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BdoDir.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BgColor.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BoolToCSS.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Border.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/EnumToCSS.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ImgRequired.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ImgSpace.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Input.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Lang.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Name.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/NameSync.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Nofollow.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeEmbed.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeParam.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ScriptRequired.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/TargetBlank.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/TargetNoopener.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/TargetNoreferrer.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Textarea.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Chameleon.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Custom.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Empty.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/List.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Required.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Optional.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/StrictBlockquote.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Table.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Null.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Serializer.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Memory.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Bdo.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/CommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Edit.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Forms.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Hypertext.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Iframe.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Image.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Legacy.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/List.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Name.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Nofollow.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Object.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Presentation.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Proprietary.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Ruby.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeEmbed.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeScripting.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Scripting.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/StyleAttribute.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tables.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Target.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/TargetBlank.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/TargetNoopener.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/TargetNoreferrer.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Text.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Name.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Strict.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Transitional.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTML.php';
+require_once $__dir . '/HTMLPurifier/Injector/AutoParagraph.php';
+require_once $__dir . '/HTMLPurifier/Injector/DisplayLinkURI.php';
+require_once $__dir . '/HTMLPurifier/Injector/Linkify.php';
+require_once $__dir . '/HTMLPurifier/Injector/PurifierLinkify.php';
+require_once $__dir . '/HTMLPurifier/Injector/RemoveEmpty.php';
+require_once $__dir . '/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
+require_once $__dir . '/HTMLPurifier/Injector/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/Lexer/DOMLex.php';
+require_once $__dir . '/HTMLPurifier/Lexer/DirectLex.php';
+require_once $__dir . '/HTMLPurifier/Node/Comment.php';
+require_once $__dir . '/HTMLPurifier/Node/Element.php';
+require_once $__dir . '/HTMLPurifier/Node/Text.php';
+require_once $__dir . '/HTMLPurifier/Strategy/Composite.php';
+require_once $__dir . '/HTMLPurifier/Strategy/Core.php';
+require_once $__dir . '/HTMLPurifier/Strategy/FixNesting.php';
+require_once $__dir . '/HTMLPurifier/Strategy/MakeWellFormed.php';
+require_once $__dir . '/HTMLPurifier/Strategy/RemoveForeignElements.php';
+require_once $__dir . '/HTMLPurifier/Strategy/ValidateAttributes.php';
+require_once $__dir . '/HTMLPurifier/TagTransform/Font.php';
+require_once $__dir . '/HTMLPurifier/TagTransform/Simple.php';
+require_once $__dir . '/HTMLPurifier/Token/Comment.php';
+require_once $__dir . '/HTMLPurifier/Token/Tag.php';
+require_once $__dir . '/HTMLPurifier/Token/Empty.php';
+require_once $__dir . '/HTMLPurifier/Token/End.php';
+require_once $__dir . '/HTMLPurifier/Token/Start.php';
+require_once $__dir . '/HTMLPurifier/Token/Text.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternal.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternalResources.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableResources.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/HostBlacklist.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/MakeAbsolute.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/Munge.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/SafeIframe.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/data.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/file.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/ftp.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/http.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/https.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/mailto.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/news.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/nntp.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/tel.php';
+require_once $__dir . '/HTMLPurifier/VarParser/Flexible.php';
+require_once $__dir . '/HTMLPurifier/VarParser/Native.php';

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Arborize.php

@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * Converts a stream of HTMLPurifier_Token into an HTMLPurifier_Node,
+ * and back again.
+ *
+ * @note This transformation is not an equivalence.  We mutate the input
+ * token stream to make it so; see all [MUT] markers in code.
+ */
+class HTMLPurifier_Arborize
+{
+    public static function arborize($tokens, $config, $context) {
+        $definition = $config->getHTMLDefinition();
+        $parent = new HTMLPurifier_Token_Start($definition->info_parent);
+        $stack = array($parent->toNode());
+        foreach ($tokens as $token) {
+            $token->skip = null; // [MUT]
+            $token->carryover = null; // [MUT]
+            if ($token instanceof HTMLPurifier_Token_End) {
+                $token->start = null; // [MUT]
+                $r = array_pop($stack);
+                //assert($r->name === $token->name);
+                //assert(empty($token->attr));
+                $r->endCol = $token->col;
+                $r->endLine = $token->line;
+                $r->endArmor = $token->armor;
+                continue;
+            }
+            $node = $token->toNode();
+            $stack[count($stack)-1]->children[] = $node;
+            if ($token instanceof HTMLPurifier_Token_Start) {
+                $stack[] = $node;
+            }
+        }
+        //assert(count($stack) == 1);
+        return $stack[0];
+    }
+
+    public static function flatten($node, $config, $context) {
+        $level = 0;
+        $nodes = array($level => new HTMLPurifier_Queue(array($node)));
+        $closingTokens = array();
+        $tokens = array();
+        do {
+            while (!$nodes[$level]->isEmpty()) {
+                $node = $nodes[$level]->shift(); // FIFO
+                list($start, $end) = $node->toTokenPair();
+                if ($level > 0) {
+                    $tokens[] = $start;
+                }
+                if ($end !== NULL) {
+                    $closingTokens[$level][] = $end;
+                }
+                if ($node instanceof HTMLPurifier_Node_Element) {
+                    $level++;
+                    $nodes[$level] = new HTMLPurifier_Queue();
+                    foreach ($node->children as $childNode) {
+                        $nodes[$level]->push($childNode);
+                    }
+                }
+            }
+            $level--;
+            if ($level && isset($closingTokens[$level])) {
+                while ($token = array_pop($closingTokens[$level])) {
+                    $tokens[] = $token;
+                }
+            }
+        } while ($level > 0);
+        return $tokens;
+    }
+}

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrCollections.php

@@ -0,0 +1,148 @@
+<?php
+
+/**
+ * Defines common attribute collections that modules reference
+ */
+
+class HTMLPurifier_AttrCollections
+{
+
+    /**
+     * Associative array of attribute collections, indexed by name.
+     * @type array
+     */
+    public $info = array();
+
+    /**
+     * Performs all expansions on internal data for use by other inclusions
+     * It also collects all attribute collection extensions from
+     * modules
+     * @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance
+     * @param HTMLPurifier_HTMLModule[] $modules Hash array of HTMLPurifier_HTMLModule members
+     */
+    public function __construct($attr_types, $modules)
+    {
+        $this->doConstruct($attr_types, $modules);
+    }
+
+    public function doConstruct($attr_types, $modules)
+    {
+        // load extensions from the modules
+        foreach ($modules as $module) {
+            foreach ($module->attr_collections as $coll_i => $coll) {
+                if (!isset($this->info[$coll_i])) {
+                    $this->info[$coll_i] = array();
+                }
+                foreach ($coll as $attr_i => $attr) {
+                    if ($attr_i === 0 && isset($this->info[$coll_i][$attr_i])) {
+                        // merge in includes
+                        $this->info[$coll_i][$attr_i] = array_merge(
+                            $this->info[$coll_i][$attr_i],
+                            $attr
+                        );
+                        continue;
+                    }
+                    $this->info[$coll_i][$attr_i] = $attr;
+                }
+            }
+        }
+        // perform internal expansions and inclusions
+        foreach ($this->info as $name => $attr) {
+            // merge attribute collections that include others
+            $this->performInclusions($this->info[$name]);
+            // replace string identifiers with actual attribute objects
+            $this->expandIdentifiers($this->info[$name], $attr_types);
+        }
+    }
+
+    /**
+     * Takes a reference to an attribute associative array and performs
+     * all inclusions specified by the zero index.
+     * @param array &$attr Reference to attribute array
+     */
+    public function performInclusions(&$attr)
+    {
+        if (!isset($attr[0])) {
+            return;
+        }
+        $merge = $attr[0];
+        $seen  = array(); // recursion guard
+        // loop through all the inclusions
+        for ($i = 0; isset($merge[$i]); $i++) {
+            if (isset($seen[$merge[$i]])) {
+                continue;
+            }
+            $seen[$merge[$i]] = true;
+            // foreach attribute of the inclusion, copy it over
+            if (!isset($this->info[$merge[$i]])) {
+                continue;
+            }
+            foreach ($this->info[$merge[$i]] as $key => $value) {
+                if (isset($attr[$key])) {
+                    continue;
+                } // also catches more inclusions
+                $attr[$key] = $value;
+            }
+            if (isset($this->info[$merge[$i]][0])) {
+                // recursion
+                $merge = array_merge($merge, $this->info[$merge[$i]][0]);
+            }
+        }
+        unset($attr[0]);
+    }
+
+    /**
+     * Expands all string identifiers in an attribute array by replacing
+     * them with the appropriate values inside HTMLPurifier_AttrTypes
+     * @param array &$attr Reference to attribute array
+     * @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance
+     */
+    public function expandIdentifiers(&$attr, $attr_types)
+    {
+        // because foreach will process new elements we add, make sure we
+        // skip duplicates
+        $processed = array();
+
+        foreach ($attr as $def_i => $def) {
+            // skip inclusions
+            if ($def_i === 0) {
+                continue;
+            }
+
+            if (isset($processed[$def_i])) {
+                continue;
+            }
+
+            // determine whether or not attribute is required
+            if ($required = (strpos($def_i, '*') !== false)) {
+                // rename the definition
+                unset($attr[$def_i]);
+                $def_i = trim($def_i, '*');
+                $attr[$def_i] = $def;
+            }
+
+            $processed[$def_i] = true;
+
+            // if we've already got a literal object, move on
+            if (is_object($def)) {
+                // preserve previous required
+                $attr[$def_i]->required = ($required || $attr[$def_i]->required);
+                continue;
+            }
+
+            if ($def === false) {
+                unset($attr[$def_i]);
+                continue;
+            }
+
+            if ($t = $attr_types->get($def)) {
+                $attr[$def_i] = $t;
+                $attr[$def_i]->required = $required;
+            } else {
+                unset($attr[$def_i]);
+            }
+        }
+    }
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef.php

@@ -0,0 +1,144 @@
+<?php
+
+/**
+ * Base class for all validating attribute definitions.
+ *
+ * This family of classes forms the core for not only HTML attribute validation,
+ * but also any sort of string that needs to be validated or cleaned (which
+ * means CSS properties and composite definitions are defined here too).
+ * Besides defining (through code) what precisely makes the string valid,
+ * subclasses are also responsible for cleaning the code if possible.
+ */
+
+abstract class HTMLPurifier_AttrDef
+{
+
+    /**
+     * Tells us whether or not an HTML attribute is minimized.
+     * Has no meaning in other contexts.
+     * @type bool
+     */
+    public $minimized = false;
+
+    /**
+     * Tells us whether or not an HTML attribute is required.
+     * Has no meaning in other contexts
+     * @type bool
+     */
+    public $required = false;
+
+    /**
+     * Validates and cleans passed string according to a definition.
+     *
+     * @param string $string String to be validated and cleaned.
+     * @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
+     * @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object.
+     */
+    abstract public function validate($string, $config, $context);
+
+    /**
+     * Convenience method that parses a string as if it were CDATA.
+     *
+     * This method process a string in the manner specified at
+     * <http://www.w3.org/TR/html4/types.html#h-6.2> by removing
+     * leading and trailing whitespace, ignoring line feeds, and replacing
+     * carriage returns and tabs with spaces.  While most useful for HTML
+     * attributes specified as CDATA, it can also be applied to most CSS
+     * values.
+     *
+     * @note This method is not entirely standards compliant, as trim() removes
+     *       more types of whitespace than specified in the spec. In practice,
+     *       this is rarely a problem, as those extra characters usually have
+     *       already been removed by HTMLPurifier_Encoder.
+     *
+     * @warning This processing is inconsistent with XML's whitespace handling
+     *          as specified by section 3.3.3 and referenced XHTML 1.0 section
+     *          4.7.  However, note that we are NOT necessarily
+     *          parsing XML, thus, this behavior may still be correct. We
+     *          assume that newlines have been normalized.
+     */
+    public function parseCDATA($string)
+    {
+        $string = trim($string);
+        $string = str_replace(array("\n", "\t", "\r"), ' ', $string);
+        return $string;
+    }
+
+    /**
+     * Factory method for creating this class from a string.
+     * @param string $string String construction info
+     * @return HTMLPurifier_AttrDef Created AttrDef object corresponding to $string
+     */
+    public function make($string)
+    {
+        // default implementation, return a flyweight of this object.
+        // If $string has an effect on the returned object (i.e. you
+        // need to overload this method), it is best
+        // to clone or instantiate new copies. (Instantiation is safer.)
+        return $this;
+    }
+
+    /**
+     * Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work
+     * properly. THIS IS A HACK!
+     * @param string $string a CSS colour definition
+     * @return string
+     */
+    protected function mungeRgb($string)
+    {
+        $p = '\s*(\d+(\.\d+)?([%]?))\s*';
+
+        if (preg_match('/(rgba|hsla)\(/', $string)) {
+            return preg_replace('/(rgba|hsla)\('.$p.','.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8,\11)', $string);
+        }
+
+        return preg_replace('/(rgb|hsl)\('.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8)', $string);
+    }
+
+    /**
+     * Parses a possibly escaped CSS string and returns the "pure"
+     * version of it.
+     */
+    protected function expandCSSEscape($string)
+    {
+        // flexibly parse it
+        $ret = '';
+        for ($i = 0, $c = strlen($string); $i < $c; $i++) {
+            if ($string[$i] === '\\') {
+                $i++;
+                if ($i >= $c) {
+                    $ret .= '\\';
+                    break;
+                }
+                if (ctype_xdigit($string[$i])) {
+                    $code = $string[$i];
+                    for ($a = 1, $i++; $i < $c && $a < 6; $i++, $a++) {
+                        if (!ctype_xdigit($string[$i])) {
+                            break;
+                        }
+                        $code .= $string[$i];
+                    }
+                    // We have to be extremely careful when adding
+                    // new characters, to make sure we're not breaking
+                    // the encoding.
+                    $char = HTMLPurifier_Encoder::unichr(hexdec($code));
+                    if (HTMLPurifier_Encoder::cleanUTF8($char) === '') {
+                        continue;
+                    }
+                    $ret .= $char;
+                    if ($i < $c && trim($string[$i]) !== '') {
+                        $i--;
+                    }
+                    continue;
+                }
+                if ($string[$i] === "\n") {
+                    continue;
+                }
+            }
+            $ret .= $string[$i];
+        }
+        return $ret;
+    }
+}
+
+// vim: et sw=4 sts=4

src/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php

@@ -0,0 +1,136 @@
+<?php
+
+/**
+ * Validates the HTML attribute style, otherwise known as CSS.
+ * @note We don't implement the whole CSS specification, so it might be
+ *       difficult to reuse this component in the context of validating
+ *       actual stylesheet declarations.
+ * @note If we were really serious about validating the CSS, we would
+ *       tokenize the styles and then parse the tokens. Obviously, we
+ *       are not doing that. Doing that could seriously harm performance,
+ *       but would make these components a lot more viable for a CSS
+ *       filtering solution.
+ */
+class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $css
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($css, $config, $context)
+    {
+        $css = $this->parseCDATA($css);
+
+        $definition = $config->getCSSDefinition();
+        $allow_duplicates = $config->get("CSS.AllowDuplicates");
+
+
+        // According to the CSS2.1 spec, the places where a
+        // non-delimiting semicolon can appear are in strings
+        // escape sequences.   So here is some dumb hack to
+        // handle quotes.
+        $len = strlen($css);
+        $accum = "";
+        $declarations = array();
+        $quoted = false;
+        for ($i = 0; $i < $len; $i++) {
+            $c = strcspn($css, ";'\"", $i);
+            $accum .= substr($css, $i, $c);
+            $i += $c;
+            if ($i == $len) break;
+            $d = $css[$i];
+            if ($quoted) {
+                $accum .= $d;
+                if ($d == $quoted) {
+                    $quoted = false;
+                }
+            } else {
+                if ($d == ";") {
+                    $declarations[] = $accum;
+                    $accum = "";
+                } else {
+                    $accum .= $d;
+                    $quoted = $d;
+                }
+            }
+        }
+        if ($accum != "") $declarations[] = $accum;
+
+        $propvalues = array();
+        $new_declarations = '';
+
+        /**
+         * Name of the current CSS property being validated.
+         */
+        $property = false;
+        $context->register('CurrentCSSProperty', $property);
+
+        foreach ($declarations as $declaration) {
+            if (!$declaration) {
+                continue;
+            }
+            if (!strpos($declaration, ':')) {
+                continue;
+            }
+            list($property, $value) = explode(':', $declaration, 2);
+            $property = trim($property);
+            $value = trim($value);
+            $ok = false;
+            do {
+                if (isset($definition->info[$property])) {
+                    $ok = true;
+                    break;
+                }
+                if (ctype_lower($property)) {
+                    break;
+                }
+                $property = strtolower($property);
+                if (isset($definition->info[$property])) {
+                    $ok = true;
+                    break;
+                }
+            } while (0);
+            if (!$ok) {
+                continue;
+            }
+            // inefficient call, since the validator will do this again
+            if (strtolower(trim($value)) !== 'inherit') {
+                // inherit works for everything (but only on the base property)
+                $result = $definition->info[$property]->validate(
+                    $value,
+                    $config,
+                    $context
+                );
+            } else {
+                $result = 'inherit';
+            }
+            if ($result === false) {
+                continue;
+            }
+            if ($allow_duplicates) {
+                $new_declarations .= "$property:$result;";
+            } else {
+                $propvalues[$property] = $result;
+            }
+        }
+
+        $context->destroy('CurrentCSSProperty');
+
+        // procedure does not write the new CSS simultaneously, so it's
+        // slightly inefficient, but it's the only way of getting rid of
+        // duplicates. Perhaps config to optimize it, but not now.
+
+        foreach ($propvalues as $prop => $value) {
+            $new_declarations .= "$prop:$value;";
+        }
+
+        return $new_declarations ? $new_declarations : false;
+
+    }
+
+}
+
+// vim: et sw=4 sts=4