Initial Commit

3 files changed, 351 insertions, 0 deletions

diff --git a/assets/php/vendor/react/dns/src/Config/Config.php b/assets/php/vendor/react/dns/src/Config/Config.php
new file mode 100644
index 0000000..c82635d
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Config/Config.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace React\Dns\Config;
+
+use RuntimeException;
+
+class Config
+{
+    /**
+     * Loads the system DNS configuration
+     *
+     * Note that this method may block while loading its internal files and/or
+     * commands and should thus be used with care! While this should be
+     * relatively fast for most systems, it remains unknown if this may block
+     * under certain circumstances. In particular, this method should only be
+     * executed before the loop starts, not while it is running.
+     *
+     * Note that this method will try to access its files and/or commands and
+     * try to parse its output. Currently, this will only parse valid nameserver
+     * entries from its output and will ignore all other output without
+     * complaining.
+     *
+     * Note that the previous section implies that this may return an empty
+     * `Config` object if no valid nameserver entries can be found.
+     *
+     * @return self
+     * @codeCoverageIgnore
+     */
+    public static function loadSystemConfigBlocking()
+    {
+        // Use WMIC output on Windows
+        if (DIRECTORY_SEPARATOR === '\\') {
+            return self::loadWmicBlocking();
+        }
+
+        // otherwise (try to) load from resolv.conf
+        try {
+            return self::loadResolvConfBlocking();
+        } catch (RuntimeException $ignored) {
+            // return empty config if parsing fails (file not found)
+            return new self();
+        }
+    }
+
+    /**
+     * Loads a resolv.conf file (from the given path or default location)
+     *
+     * Note that this method blocks while loading the given path and should
+     * thus be used with care! While this should be relatively fast for normal
+     * resolv.conf files, this may be an issue if this file is located on a slow
+     * device or contains an excessive number of entries. In particular, this
+     * method should only be executed before the loop starts, not while it is
+     * running.
+     *
+     * Note that this method will throw if the given file can not be loaded,
+     * such as if it is not readable or does not exist. In particular, this file
+     * is not available on Windows.
+     *
+     * Currently, this will only parse valid "nameserver X" lines from the
+     * given file contents. Lines can be commented out with "#" and ";" and
+     * invalid lines will be ignored without complaining. See also
+     * `man resolv.conf` for more details.
+     *
+     * Note that the previous section implies that this may return an empty
+     * `Config` object if no valid "nameserver X" lines can be found. See also
+     * `man resolv.conf` which suggests that the DNS server on the localhost
+     * should be used in this case. This is left up to higher level consumers
+     * of this API.
+     *
+     * @param ?string $path (optional) path to resolv.conf file or null=load default location
+     * @return self
+     * @throws RuntimeException if the path can not be loaded (does not exist)
+     */
+    public static function loadResolvConfBlocking($path = null)
+    {
+        if ($path === null) {
+            $path = '/etc/resolv.conf';
+        }
+
+        $contents = @file_get_contents($path);
+        if ($contents === false) {
+            throw new RuntimeException('Unable to load resolv.conf file "' . $path . '"');
+        }
+
+        preg_match_all('/^nameserver\s+(\S+)\s*$/m', $contents, $matches);
+
+        $config = new self();
+        $config->nameservers = $matches[1];
+
+        return $config;
+    }
+
+    /**
+     * Loads the DNS configurations from Windows's WMIC (from the given command or default command)
+     *
+     * Note that this method blocks while loading the given command and should
+     * thus be used with care! While this should be relatively fast for normal
+     * WMIC commands, it remains unknown if this may block under certain
+     * circumstances. In particular, this method should only be executed before
+     * the loop starts, not while it is running.
+     *
+     * Note that this method will only try to execute the given command try to
+     * parse its output, irrespective of whether this command exists. In
+     * particular, this command is only available on Windows. Currently, this
+     * will only parse valid nameserver entries from the command output and will
+     * ignore all other output without complaining.
+     *
+     * Note that the previous section implies that this may return an empty
+     * `Config` object if no valid nameserver entries can be found.
+     *
+     * @param ?string $command (advanced) should not be given (NULL) unless you know what you're doing
+     * @return self
+     * @link https://ss64.com/nt/wmic.html
+     */
+    public static function loadWmicBlocking($command = null)
+    {
+        $contents = shell_exec($command === null ? 'wmic NICCONFIG get "DNSServerSearchOrder" /format:CSV' : $command);
+        preg_match_all('/(?<=[{;,"])([\da-f.:]{4,})(?=[};,"])/i', $contents, $matches);
+
+        $config = new self();
+        $config->nameservers = $matches[1];
+
+        return $config;
+    }
+
+    public $nameservers = array();
+}
diff --git a/assets/php/vendor/react/dns/src/Config/FilesystemFactory.php b/assets/php/vendor/react/dns/src/Config/FilesystemFactory.php
new file mode 100644
index 0000000..68cec3e
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Config/FilesystemFactory.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace React\Dns\Config;
+
+use React\EventLoop\LoopInterface;
+use React\Promise;
+use React\Promise\Deferred;
+use React\Stream\ReadableResourceStream;
+use React\Stream\Stream;
+
+/**
+ * @deprecated
+ * @see Config see Config class instead.
+ */
+class FilesystemFactory
+{
+    private $loop;
+
+    public function __construct(LoopInterface $loop)
+    {
+        $this->loop = $loop;
+    }
+
+    public function create($filename)
+    {
+        return $this
+            ->loadEtcResolvConf($filename)
+            ->then(array($this, 'parseEtcResolvConf'));
+    }
+
+    /**
+     * @param string $contents
+     * @return Promise
+     * @deprecated see Config instead
+     */
+    public function parseEtcResolvConf($contents)
+    {
+        return Promise\resolve(Config::loadResolvConfBlocking(
+            'data://text/plain;base64,' . base64_encode($contents)
+        ));
+    }
+
+    public function loadEtcResolvConf($filename)
+    {
+        if (!file_exists($filename)) {
+            return Promise\reject(new \InvalidArgumentException("The filename for /etc/resolv.conf given does not exist: $filename"));
+        }
+
+        try {
+            $deferred = new Deferred();
+
+            $fd = fopen($filename, 'r');
+            stream_set_blocking($fd, 0);
+
+            $contents = '';
+
+            $stream = class_exists('React\Stream\ReadableResourceStream') ? new ReadableResourceStream($fd, $this->loop) : new Stream($fd, $this->loop);
+            $stream->on('data', function ($data) use (&$contents) {
+                $contents .= $data;
+            });
+            $stream->on('end', function () use (&$contents, $deferred) {
+                $deferred->resolve($contents);
+            });
+            $stream->on('error', function ($error) use ($deferred) {
+                $deferred->reject($error);
+            });
+
+            return $deferred->promise();
+        } catch (\Exception $e) {
+            return Promise\reject($e);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Config/HostsFile.php b/assets/php/vendor/react/dns/src/Config/HostsFile.php
new file mode 100644
index 0000000..5b6277e
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Config/HostsFile.php
@@ -0,0 +1,151 @@
+<?php
+
+namespace React\Dns\Config;
+
+use RuntimeException;
+
+/**
+ * Represents a static hosts file which maps hostnames to IPs
+ *
+ * Hosts files are used on most systems to avoid actually hitting the DNS for
+ * certain common hostnames.
+ *
+ * Most notably, this file usually contains an entry to map "localhost" to the
+ * local IP. Windows is a notable exception here, as Windows does not actually
+ * include "localhost" in this file by default. To compensate for this, this
+ * class may explicitly be wrapped in another HostsFile instance which
+ * hard-codes these entries for Windows (see also Factory).
+ *
+ * This class mostly exists to abstract the parsing/extraction process so this
+ * can be replaced with a faster alternative in the future.
+ */
+class HostsFile
+{
+    /**
+     * Returns the default path for the hosts file on this system
+     *
+     * @return string
+     * @codeCoverageIgnore
+     */
+    public static function getDefaultPath()
+    {
+        // use static path for all Unix-based systems
+        if (DIRECTORY_SEPARATOR !== '\\') {
+            return '/etc/hosts';
+        }
+
+        // Windows actually stores the path in the registry under
+        // \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DataBasePath
+        $path = '%SystemRoot%\\system32\drivers\etc\hosts';
+
+        $base = getenv('SystemRoot');
+        if ($base === false) {
+            $base = 'C:\\Windows';
+        }
+
+        return str_replace('%SystemRoot%', $base, $path);
+    }
+
+    /**
+     * Loads a hosts file (from the given path or default location)
+     *
+     * Note that this method blocks while loading the given path and should
+     * thus be used with care! While this should be relatively fast for normal
+     * hosts file, this may be an issue if this file is located on a slow device
+     * or contains an excessive number of entries. In particular, this method
+     * should only be executed before the loop starts, not while it is running.
+     *
+     * @param ?string $path (optional) path to hosts file or null=load default location
+     * @return self
+     * @throws RuntimeException if the path can not be loaded (does not exist)
+     */
+    public static function loadFromPathBlocking($path = null)
+    {
+        if ($path === null) {
+            $path = self::getDefaultPath();
+        }
+
+        $contents = @file_get_contents($path);
+        if ($contents === false) {
+            throw new RuntimeException('Unable to load hosts file "' . $path . '"');
+        }
+
+        return new self($contents);
+    }
+
+    /**
+     * Instantiate new hosts file with the given hosts file contents
+     *
+     * @param string $contents
+     */
+    public function __construct($contents)
+    {
+        // remove all comments from the contents
+        $contents = preg_replace('/[ \t]*#.*/', '', strtolower($contents));
+
+        $this->contents = $contents;
+    }
+
+    /**
+     * Returns all IPs for the given hostname
+     *
+     * @param string $name
+     * @return string[]
+     */
+    public function getIpsForHost($name)
+    {
+        $name = strtolower($name);
+
+        $ips = array();
+        foreach (preg_split('/\r?\n/', $this->contents) as $line) {
+            $parts = preg_split('/\s+/', $line);
+            $ip = array_shift($parts);
+            if ($parts && array_search($name, $parts) !== false) {
+                // remove IPv6 zone ID (`fe80::1%lo0` => `fe80:1`)
+                if (strpos($ip, ':') !== false && ($pos = strpos($ip, '%')) !== false) {
+                    $ip = substr($ip, 0, $pos);
+                }
+
+                if (@inet_pton($ip) !== false) {
+                    $ips[] = $ip;
+                }
+            }
+        }
+
+        return $ips;
+    }
+
+    /**
+     * Returns all hostnames for the given IPv4 or IPv6 address
+     *
+     * @param string $ip
+     * @return string[]
+     */
+    public function getHostsForIp($ip)
+    {
+        // check binary representation of IP to avoid string case and short notation
+        $ip = @inet_pton($ip);
+        if ($ip === false) {
+            return array();
+        }
+
+        $names = array();
+        foreach (preg_split('/\r?\n/', $this->contents) as $line) {
+            $parts = preg_split('/\s+/', $line, null, PREG_SPLIT_NO_EMPTY);
+            $addr = array_shift($parts);
+
+            // remove IPv6 zone ID (`fe80::1%lo0` => `fe80:1`)
+            if (strpos($addr, ':') !== false && ($pos = strpos($addr, '%')) !== false) {
+                $addr = substr($addr, 0, $pos);
+            }
+
+            if (@inet_pton($addr) === $ip) {
+                foreach ($parts as $part) {
+                    $names[] = $part;
+                }
+            }
+        }
+
+        return $names;
+    }
+}