Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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recaptcha.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\captcha\plugins;
015
016 class recaptcha extends captcha_abstract
017 {
018 var $recaptcha_server = 'http://www.google.com/recaptcha/api';
019 var $recaptcha_server_secure = 'https://www.google.com/recaptcha/api'; // class constants :(
020
021 var $response;
022
023 /**
024 * Constructor
025 */
026 public function __construct()
027 {
028 global $request;
029 $this->recaptcha_server = $request->is_secure() ? $this->recaptcha_server_secure : $this->recaptcha_server;
030 }
031
032 function init($type)
033 {
034 global $user, $request;
035
036 $user->add_lang('captcha_recaptcha');
037 parent::init($type);
038 $this->response = $request->variable('g-recaptcha-response', '');
039 }
040
041 public function is_available()
042 {
043 global $config, $user;
044 $user->add_lang('captcha_recaptcha');
045 return (isset($config['recaptcha_pubkey']) && !empty($config['recaptcha_pubkey']));
046 }
047
048 /**
049 * API function
050 */
051 function has_config()
052 {
053 return true;
054 }
055
056 static public function get_name()
057 {
058 return 'CAPTCHA_RECAPTCHA';
059 }
060
061 /**
062 * This function is implemented because required by the upper class, but is never used for reCaptcha.
063 */
064 function get_generator_class()
065 {
066 throw new \Exception('No generator class given.');
067 }
068
069 function acp_page($id, &$module)
070 {
071 global $config, $template, $user, $phpbb_log, $request;
072
073 $captcha_vars = array(
074 'recaptcha_pubkey' => 'RECAPTCHA_PUBKEY',
075 'recaptcha_privkey' => 'RECAPTCHA_PRIVKEY',
076 );
077
078 $module->tpl_name = 'captcha_recaptcha_acp';
079 $module->page_title = 'ACP_VC_SETTINGS';
080 $form_key = 'acp_captcha';
081 add_form_key($form_key);
082
083 $submit = $request->variable('submit', '');
084
085 if ($submit && check_form_key($form_key))
086 {
087 $captcha_vars = array_keys($captcha_vars);
088 foreach ($captcha_vars as $captcha_var)
089 {
090 $value = $request->variable($captcha_var, '');
091 if ($value)
092 {
093 $config->set($captcha_var, $value);
094 }
095 }
096
097 $phpbb_log->add('admin', $user->data['user_id'], $user->ip, 'LOG_CONFIG_VISUAL');
098 trigger_error($user->lang['CONFIG_UPDATED'] . adm_back_link($module->u_action));
099 }
100 else if ($submit)
101 {
102 trigger_error($user->lang['FORM_INVALID'] . adm_back_link($module->u_action));
103 }
104 else
105 {
106 foreach ($captcha_vars as $captcha_var => $template_var)
107 {
108 $var = (isset($_REQUEST[$captcha_var])) ? $request->variable($captcha_var, '') : ((isset($config[$captcha_var])) ? $config[$captcha_var] : '');
109 $template->assign_var($template_var, $var);
110 }
111
112 $template->assign_vars(array(
113 'CAPTCHA_PREVIEW' => $this->get_demo_template($id),
114 'CAPTCHA_NAME' => $this->get_service_name(),
115 'U_ACTION' => $module->u_action,
116 ));
117
118 }
119 }
120
121 // not needed
122 function execute_demo()
123 {
124 }
125
126 // not needed
127 function execute()
128 {
129 }
130
131 function get_template()
132 {
133 global $config, $user, $template, $phpbb_root_path, $phpEx;
134
135 if ($this->is_solved())
136 {
137 return false;
138 }
139 else
140 {
141 $contact_link = phpbb_get_board_contact_link($config, $phpbb_root_path, $phpEx);
142 $explain = $user->lang(($this->type != CONFIRM_POST) ? 'CONFIRM_EXPLAIN' : 'POST_CONFIRM_EXPLAIN', '<a href="' . $contact_link . '">', '</a>');
143
144 $template->assign_vars(array(
145 'RECAPTCHA_SERVER' => $this->recaptcha_server,
146 'RECAPTCHA_PUBKEY' => isset($config['recaptcha_pubkey']) ? $config['recaptcha_pubkey'] : '',
147 'S_RECAPTCHA_AVAILABLE' => self::is_available(),
148 'S_CONFIRM_CODE' => true,
149 'S_TYPE' => $this->type,
150 'L_CONFIRM_EXPLAIN' => $explain,
151 ));
152
153 return 'captcha_recaptcha.html';
154 }
155 }
156
157 function get_demo_template($id)
158 {
159 return $this->get_template();
160 }
161
162 function get_hidden_fields()
163 {
164 $hidden_fields = array();
165
166 // this is required for posting.php - otherwise we would forget about the captcha being already solved
167 if ($this->solved)
168 {
169 $hidden_fields['confirm_code'] = $this->code;
170 }
171 $hidden_fields['confirm_id'] = $this->confirm_id;
172 return $hidden_fields;
173 }
174
175 function uninstall()
176 {
177 $this->garbage_collect(0);
178 }
179
180 function install()
181 {
182 return;
183 }
184
185 function validate()
186 {
187 if (!parent::validate())
188 {
189 return false;
190 }
191 else
192 {
193 return $this->recaptcha_check_answer();
194 }
195 }
196
197 /**
198 * Calls an HTTP POST function to verify if the user's guess was correct
199 *
200 * @return bool|string Returns false on success or error string on failure.
201 */
202 function recaptcha_check_answer()
203 {
204 global $config, $user;
205
206 //discard spam submissions
207 if ($this->response == null || strlen($this->response) == 0)
208 {
209 return $user->lang['RECAPTCHA_INCORRECT'];
210 }
211
212 $recaptcha = new \ReCaptcha\ReCaptcha($config['recaptcha_privkey']);
213 $result = $recaptcha->verify($this->response, $user->ip);
214
215 if ($result->isSuccess())
216 {
217 $this->solved = true;
218 return false;
219 }
220 else
221 {
222 return $user->lang['RECAPTCHA_INCORRECT'];
223 }
224 }
225 }
226