Primo Committ

vendor/laravel/framework/src/Illuminate/Session/DatabaseSessionHandler.php

@@ -0,0 +1,294 @@
+<?php
+
+namespace Illuminate\Session;
+
+use Illuminate\Contracts\Auth\Guard;
+use Illuminate\Contracts\Container\Container;
+use Illuminate\Database\ConnectionInterface;
+use Illuminate\Database\QueryException;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\InteractsWithTime;
+use SessionHandlerInterface;
+
+class DatabaseSessionHandler implements ExistenceAwareInterface, SessionHandlerInterface
+{
+    use InteractsWithTime;
+
+    /**
+     * The database connection instance.
+     *
+     * @var \Illuminate\Database\ConnectionInterface
+     */
+    protected $connection;
+
+    /**
+     * The name of the session table.
+     *
+     * @var string
+     */
+    protected $table;
+
+    /**
+     * The number of minutes the session should be valid.
+     *
+     * @var int
+     */
+    protected $minutes;
+
+    /**
+     * The container instance.
+     *
+     * @var \Illuminate\Contracts\Container\Container
+     */
+    protected $container;
+
+    /**
+     * The existence state of the session.
+     *
+     * @var bool
+     */
+    protected $exists;
+
+    /**
+     * Create a new database session handler instance.
+     *
+     * @param  \Illuminate\Database\ConnectionInterface  $connection
+     * @param  string  $table
+     * @param  int  $minutes
+     * @param  \Illuminate\Contracts\Container\Container|null  $container
+     * @return void
+     */
+    public function __construct(ConnectionInterface $connection, $table, $minutes, Container $container = null)
+    {
+        $this->table = $table;
+        $this->minutes = $minutes;
+        $this->container = $container;
+        $this->connection = $connection;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function open($savePath, $sessionName)
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function close()
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function read($sessionId)
+    {
+        $session = (object) $this->getQuery()->find($sessionId);
+
+        if ($this->expired($session)) {
+            $this->exists = true;
+
+            return '';
+        }
+
+        if (isset($session->payload)) {
+            $this->exists = true;
+
+            return base64_decode($session->payload);
+        }
+
+        return '';
+    }
+
+    /**
+     * Determine if the session is expired.
+     *
+     * @param  \stdClass  $session
+     * @return bool
+     */
+    protected function expired($session)
+    {
+        return isset($session->last_activity) &&
+            $session->last_activity < Carbon::now()->subMinutes($this->minutes)->getTimestamp();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function write($sessionId, $data)
+    {
+        $payload = $this->getDefaultPayload($data);
+
+        if (! $this->exists) {
+            $this->read($sessionId);
+        }
+
+        if ($this->exists) {
+            $this->performUpdate($sessionId, $payload);
+        } else {
+            $this->performInsert($sessionId, $payload);
+        }
+
+        return $this->exists = true;
+    }
+
+    /**
+     * Perform an insert operation on the session ID.
+     *
+     * @param  string  $sessionId
+     * @param  string  $payload
+     * @return bool|null
+     */
+    protected function performInsert($sessionId, $payload)
+    {
+        try {
+            return $this->getQuery()->insert(Arr::set($payload, 'id', $sessionId));
+        } catch (QueryException $e) {
+            $this->performUpdate($sessionId, $payload);
+        }
+    }
+
+    /**
+     * Perform an update operation on the session ID.
+     *
+     * @param  string  $sessionId
+     * @param  string  $payload
+     * @return int
+     */
+    protected function performUpdate($sessionId, $payload)
+    {
+        return $this->getQuery()->where('id', $sessionId)->update($payload);
+    }
+
+    /**
+     * Get the default payload for the session.
+     *
+     * @param  string  $data
+     * @return array
+     */
+    protected function getDefaultPayload($data)
+    {
+        $payload = [
+            'payload' => base64_encode($data),
+            'last_activity' => $this->currentTime(),
+        ];
+
+        if (! $this->container) {
+            return $payload;
+        }
+
+        return tap($payload, function (&$payload) {
+            $this->addUserInformation($payload)
+                 ->addRequestInformation($payload);
+        });
+    }
+
+    /**
+     * Add the user information to the session payload.
+     *
+     * @param  array  $payload
+     * @return $this
+     */
+    protected function addUserInformation(&$payload)
+    {
+        if ($this->container->bound(Guard::class)) {
+            $payload['user_id'] = $this->userId();
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the currently authenticated user's ID.
+     *
+     * @return mixed
+     */
+    protected function userId()
+    {
+        return $this->container->make(Guard::class)->id();
+    }
+
+    /**
+     * Add the request information to the session payload.
+     *
+     * @param  array  $payload
+     * @return $this
+     */
+    protected function addRequestInformation(&$payload)
+    {
+        if ($this->container->bound('request')) {
+            $payload = array_merge($payload, [
+                'ip_address' => $this->ipAddress(),
+                'user_agent' => $this->userAgent(),
+            ]);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the IP address for the current request.
+     *
+     * @return string
+     */
+    protected function ipAddress()
+    {
+        return $this->container->make('request')->ip();
+    }
+
+    /**
+     * Get the user agent for the current request.
+     *
+     * @return string
+     */
+    protected function userAgent()
+    {
+        return substr((string) $this->container->make('request')->header('User-Agent'), 0, 500);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function destroy($sessionId)
+    {
+        $this->getQuery()->where('id', $sessionId)->delete();
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function gc($lifetime)
+    {
+        $this->getQuery()->where('last_activity', '<=', $this->currentTime() - $lifetime)->delete();
+    }
+
+    /**
+     * Get a fresh query builder instance for the table.
+     *
+     * @return \Illuminate\Database\Query\Builder
+     */
+    protected function getQuery()
+    {
+        return $this->connection->table($this->table);
+    }
+
+    /**
+     * Set the existence state for the session.
+     *
+     * @param  bool  $value
+     * @return $this
+     */
+    public function setExists($value)
+    {
+        $this->exists = $value;
+
+        return $this;
+    }
+}