1: <?php
  2: 
  3: namespace Alpha\Util\Http\Session;
  4: 
  5: use Alpha\Util\Logging\Logger;
  6: use Alpha\Util\Config\ConfigProvider;
  7: 
  8: /**
  9:  * Provides a session handle that stores session data in $_SESSION, the default PHP implementation.
 10:  *
 11:  * @since 2.0
 12:  *
 13:  * @author John Collins <dev@alphaframework.org>
 14:  * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
 15:  * @copyright Copyright (c) 2015, John Collins (founder of Alpha Framework).
 16:  * All rights reserved.
 17:  *
 18:  * <pre>
 19:  * Redistribution and use in source and binary forms, with or
 20:  * without modification, are permitted provided that the
 21:  * following conditions are met:
 22:  *
 23:  * * Redistributions of source code must retain the above
 24:  *   copyright notice, this list of conditions and the
 25:  *   following disclaimer.
 26:  * * Redistributions in binary form must reproduce the above
 27:  *   copyright notice, this list of conditions and the
 28:  *   following disclaimer in the documentation and/or other
 29:  *   materials provided with the distribution.
 30:  * * Neither the name of the Alpha Framework nor the names
 31:  *   of its contributors may be used to endorse or promote
 32:  *   products derived from this software without specific
 33:  *   prior written permission.
 34:  *
 35:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 36:  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 37:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 38:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 39:  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 40:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 41:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 42:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 43:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 44:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 45:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 46:  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 47:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 48:  * </pre>
 49:  */
 50: class SessionProviderPHP implements SessionProviderInterface
 51: {
 52:     /**
 53:      * Trace logger.
 54:      *
 55:      * @var Alpha\Util\Logging\Logger
 56:      *
 57:      * @since 2.0
 58:      */
 59:     private static $logger = null;
 60: 
 61:     /**
 62:      * Constructor.
 63:      *
 64:      * @since 2.0
 65:      */
 66:     public function __construct()
 67:     {
 68:         self::$logger = new Logger('SessionProviderPHP');
 69:     }
 70: 
 71:     /**
 72:      * {@inheritdoc}
 73:      */
 74:     public function init()
 75:     {
 76:         if (session_id() == '' && !headers_sent()) {
 77:             $config = ConfigProvider::getInstance();
 78:             $url = parse_url($config->get('app.url'));
 79:             $hostname = $url['host'];
 80:             session_set_cookie_params(0, '/', $hostname, false, true);
 81:             session_start();
 82:         }
 83:     }
 84: 
 85:     /**
 86:      * {@inheritdoc}
 87:      */
 88:     public function destroy()
 89:     {
 90:         $_SESSION = array();
 91:         session_destroy();
 92:     }
 93: 
 94:     /**
 95:      * {@inheritdoc}
 96:      */
 97:     public function get($key)
 98:     {
 99:         self::$logger->debug('>>get(key=['.$key.'])');
100: 
101:         self::$logger->debug('Getting value for key ['.$key.']');
102: 
103:         if (array_key_exists($key, $_SESSION)) {
104:             return $_SESSION[$key];
105:         } else {
106:             return false;
107:         }
108:     }
109: 
110:     /**
111:      * {@inheritdoc}
112:      */
113:     public function set($key, $value)
114:     {
115:         self::$logger->debug('Setting value for key ['.$key.']');
116: 
117:         $_SESSION[$key] = $value;
118:     }
119: 
120:     /**
121:      * {@inheritdoc}
122:      */
123:     public function delete($key)
124:     {
125:         self::$logger->debug('Removing value for key ['.$key.']');
126: 
127:         unset($_SESSION[$key]);
128:     }
129: 
130:     /**
131:      * {@inheritdoc}
132:      */
133:     public function getID()
134:     {
135:         return session_id();
136:     }
137: }
138: