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recaptcha
This commit is contained in:
Claude
parent
45ecd6a878
commit
b7a3a6c5af
@ -88,11 +88,16 @@ $config['per_page'] = 15;
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*
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* private_only: No recent pastes will be displayed.
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* enable_captcha: Users must enter a captcha to post.
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* recaptcha_publickey & recaptcha_privatekey: If filled in correctly, reCaptcha will be used
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* blocked_words: Comma separated list, e.g. '.es.tl, mycraft.com, yourbadword'
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* disable_api: Don't allow pasting via API (because we can't use a captcha there...)
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*
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**/
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$config['private_only'] = false;
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$config['enable_captcha'] = false;
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$config['enable_captcha'] = true;
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$config['recaptcha_publickey'] = '6LcNfOASAAAAAAP8AlckZgKxxvgzhHqFtfqnALG-';
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$config['recaptcha_privatekey'] = '6LcNfOASAAAAAMsddBL8WIQI-oc7Sh6vtJRYN9FK';
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$config['disable_api'] = false;
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$config['blocked_words'] = '';
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//spamadmin: accessible via /spamadmin (only active when user + pass is set)
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@ -17,6 +17,7 @@
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* - captcha()
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* - _valid_lang()
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* - _valid_captcha()
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* - _valid_recaptcha()
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* - _valid_ip()
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* - _blockwords_check()
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* - _autofill_check()
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@ -35,11 +36,16 @@ class Main extends CI_Controller
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parent::__construct();
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$this->load->model('languages');
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if ($this->config->item('require_auth'))
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if (config_item('require_auth'))
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{
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$this->load->library('auth_ldap');
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}
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//recaptcha
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$this->recaptcha_publickey = config_item('recaptcha_publickey');
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$this->recaptcha_privatekey = config_item('recaptcha_privatekey');
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$this->use_recaptcha = ($this->recaptcha_publickey != '' && $this->recaptcha_privatekey != '' ? true : false);
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if (!$this->db->table_exists('ci_sessions'))
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{
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$this->load->dbforge();
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@ -249,7 +255,7 @@ class Main extends CI_Controller
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//codemirror languages
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$this->load->config('codemirror_languages');
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$codemirror_languages = $this->config->item('codemirror_languages');
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$codemirror_languages = config_item('codemirror_languages');
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$data['codemirror_languages'] = $codemirror_languages;
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//codemirror modes
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@ -269,7 +275,7 @@ class Main extends CI_Controller
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if (!$this->db_session->userdata('expire'))
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{
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$default_expiration = $this->config->item('default_expiration');
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$default_expiration = config_item('default_expiration');
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$this->db_session->set_userdata('expire', $default_expiration);
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}
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@ -287,7 +293,7 @@ class Main extends CI_Controller
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if (!$lang)
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{
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$lang = $this->config->item('default_language');
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$lang = config_item('default_language');
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}
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$data['lang_set'] = $lang;
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}
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@ -367,7 +373,7 @@ class Main extends CI_Controller
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else
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{
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if ($this->config->item('private_only'))
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if (config_item('private_only'))
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{
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$_POST['private'] = 1;
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}
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@ -416,7 +422,7 @@ class Main extends CI_Controller
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$this->load->helper('text');
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$paste = $this->pastes->getPaste(3);
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$data = $this->pastes->getReplies(3);
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$data['page_title'] = $paste['title'] . ' - ' . $this->config->item('site_name');
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$data['page_title'] = $paste['title'] . ' - ' . config_item('site_name');
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$data['feed_url'] = site_url('view/rss/' . $this->uri->segment(3));
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$this->load->view('view/rss', $data);
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}
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@ -464,7 +470,7 @@ class Main extends CI_Controller
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{
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$this->_valid_authentication();
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if ($this->config->item('private_only'))
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if (config_item('private_only'))
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{
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show_404();
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}
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@ -476,7 +482,7 @@ class Main extends CI_Controller
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if ($this->uri->segment(2) == 'rss')
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{
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$this->load->helper('text');
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$data['page_title'] = $this->config->item('site_name');
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$data['page_title'] = config_item('site_name');
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$data['feed_url'] = site_url('lists/rss');
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$data['replies'] = $data['pastes'];
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unset($data['pastes']);
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@ -493,7 +499,7 @@ class Main extends CI_Controller
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{
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$this->_valid_authentication();
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if ($this->config->item('private_only'))
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if (config_item('private_only'))
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{
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show_404();
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}
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@ -534,7 +540,7 @@ class Main extends CI_Controller
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$this->load->model('pastes');
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$key = $this->uri->segment(2);
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if ($key != $this->config->item('cron_key'))
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if ($key != config_item('cron_key'))
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{
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show_404();
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}
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@ -584,10 +590,18 @@ class Main extends CI_Controller
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function _valid_captcha($text)
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{
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if ($this->config->item('enable_captcha'))
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if (config_item('enable_captcha'))
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{
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$this->form_validation->set_message('_valid_captcha', lang('captcha'));
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return strtolower($text) == strtolower($this->db_session->userdata('captcha'));
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if ($this->use_recaptcha)
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{
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return $this->_valid_recaptcha();
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}
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else
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{
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return strtolower($text) == strtolower($this->db_session->userdata('captcha'));
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}
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}
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else
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{
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@ -595,6 +609,36 @@ class Main extends CI_Controller
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}
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}
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function _valid_recaptcha()
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{
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$this->load->helper('recaptcha');
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if ($this->input->post('recaptcha_response_field'))
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{
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$pk = $this->recaptcha_privatekey;
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$ra = $_SERVER['REMOTE_ADDR'];
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$cf = $this->input->post('recaptcha_challenge_field');
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$rf = $this->input->post('recaptcha_response_field');
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//check
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$resp = recaptcha_check_answer($pk, $ra, $cf, $rf);
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if ($resp->is_valid)
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{
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return true;
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}
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else
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{
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$this->form_validation->set_message('_valid_captcha', $resp->error);
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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function _valid_ip()
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{
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@ -640,9 +684,16 @@ class Main extends CI_Controller
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$this->form_validation->set_message('_blockwords_check', lang('blocked_words'));
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//check
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$blocked_words = $this->config->item('blocked_words');
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$blocked_words = config_item('blocked_words');
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$post = $this->input->post();
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$raw = $post['code'];
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if (!$blocked_words)
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{
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return true;
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}
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//we have blocked words
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foreach (explode(',', $blocked_words) as $word)
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{
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$word = trim($word);
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@ -668,7 +719,7 @@ class Main extends CI_Controller
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function _valid_authentication()
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{
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if ($this->config->item('require_auth'))
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if (config_item('require_auth'))
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{
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if (!$this->auth_ldap->is_authenticated())
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@ -683,7 +734,7 @@ class Main extends CI_Controller
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{
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$lang = $this->uri->segment(3);
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$this->load->config('codemirror_languages');
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$cml = $this->config->item('codemirror_languages');
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$cml = config_item('codemirror_languages');
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//file path
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$file_path = 'themes/' . config_item('theme') . '/js/';
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277
htdocs/application/helpers/recaptcha_helper.php
Normal file
277
htdocs/application/helpers/recaptcha_helper.php
Normal file
@ -0,0 +1,277 @@
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<?php
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/*
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* This is a PHP library that handles calling reCAPTCHA.
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* - Documentation and latest version
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* http://recaptcha.net/plugins/php/
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* - Get a reCAPTCHA API Key
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* https://www.google.com/recaptcha/admin/create
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* - Discussion group
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* http://groups.google.com/group/recaptcha
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*
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* Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
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* AUTHORS:
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* Mike Crawford
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* Ben Maurer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/**
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* The reCAPTCHA server URL's
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*/
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define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
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define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
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define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
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/**
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* Encodes the given data into a query string format
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* @param $data - array of string elements to be encoded
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* @return string - encoded request
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*/
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function _recaptcha_qsencode ($data) {
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$req = "";
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foreach ( $data as $key => $value )
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$req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
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// Cut the last '&'
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$req=substr($req,0,strlen($req)-1);
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return $req;
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}
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/**
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* Submits an HTTP POST to a reCAPTCHA server
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* @param string $host
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* @param string $path
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* @param array $data
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* @param int port
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* @return array response
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*/
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function _recaptcha_http_post($host, $path, $data, $port = 80) {
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$req = _recaptcha_qsencode ($data);
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$http_request = "POST $path HTTP/1.0\r\n";
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$http_request .= "Host: $host\r\n";
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$http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
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$http_request .= "Content-Length: " . strlen($req) . "\r\n";
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$http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
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$http_request .= "\r\n";
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$http_request .= $req;
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$response = '';
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if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
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die ('Could not open socket');
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}
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fwrite($fs, $http_request);
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while ( !feof($fs) )
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$response .= fgets($fs, 1160); // One TCP-IP packet
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fclose($fs);
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$response = explode("\r\n\r\n", $response, 2);
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return $response;
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}
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/**
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* Gets the challenge HTML (javascript and non-javascript version).
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* This is called from the browser, and the resulting reCAPTCHA HTML widget
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* is embedded within the HTML form it was called from.
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* @param string $pubkey A public key for reCAPTCHA
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* @param string $error The error given by reCAPTCHA (optional, default is null)
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* @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
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* @return string - The HTML to be embedded in the user's form.
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*/
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function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
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{
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if ($pubkey == null || $pubkey == '') {
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die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
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}
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if ($use_ssl) {
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$server = RECAPTCHA_API_SECURE_SERVER;
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} else {
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$server = RECAPTCHA_API_SERVER;
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}
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$errorpart = "";
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if ($error) {
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$errorpart = "&error=" . $error;
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}
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return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
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<noscript>
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<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
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<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
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<input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
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</noscript>';
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}
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/**
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* A ReCaptchaResponse is returned from recaptcha_check_answer()
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*/
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class ReCaptchaResponse {
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var $is_valid;
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var $error;
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}
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/**
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* Calls an HTTP POST function to verify if the user's guess was correct
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* @param string $privkey
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* @param string $remoteip
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* @param string $challenge
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* @param string $response
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* @param array $extra_params an array of extra variables to post to the server
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* @return ReCaptchaResponse
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*/
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function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
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{
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if ($privkey == null || $privkey == '') {
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die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
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}
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if ($remoteip == null || $remoteip == '') {
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die ("For security reasons, you must pass the remote ip to reCAPTCHA");
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}
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//discard spam submissions
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if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
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$recaptcha_response = new ReCaptchaResponse();
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$recaptcha_response->is_valid = false;
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$recaptcha_response->error = 'incorrect-captcha-sol';
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return $recaptcha_response;
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}
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$response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify",
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array (
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'privatekey' => $privkey,
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'remoteip' => $remoteip,
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'challenge' => $challenge,
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'response' => $response
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) + $extra_params
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);
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$answers = explode ("\n", $response [1]);
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$recaptcha_response = new ReCaptchaResponse();
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if (trim ($answers [0]) == 'true') {
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$recaptcha_response->is_valid = true;
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}
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else {
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$recaptcha_response->is_valid = false;
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$recaptcha_response->error = $answers [1];
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}
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return $recaptcha_response;
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}
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/**
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* gets a URL where the user can sign up for reCAPTCHA. If your application
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* has a configuration page where you enter a key, you should provide a link
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* using this function.
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* @param string $domain The domain where the page is hosted
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* @param string $appname The name of your application
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*/
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function recaptcha_get_signup_url ($domain = null, $appname = null) {
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return "https://www.google.com/recaptcha/admin/create?" . _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname));
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}
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function _recaptcha_aes_pad($val) {
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$block_size = 16;
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$numpad = $block_size - (strlen ($val) % $block_size);
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return str_pad($val, strlen ($val) + $numpad, chr($numpad));
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}
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/* Mailhide related code */
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function _recaptcha_aes_encrypt($val,$ky) {
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if (! function_exists ("mcrypt_encrypt")) {
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die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
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}
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$mode=MCRYPT_MODE_CBC;
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$enc=MCRYPT_RIJNDAEL_128;
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$val=_recaptcha_aes_pad($val);
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return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
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}
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function _recaptcha_mailhide_urlbase64 ($x) {
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return strtr(base64_encode ($x), '+/', '-_');
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}
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/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
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function recaptcha_mailhide_url($pubkey, $privkey, $email) {
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if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
|
||||
die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
|
||||
"you can do so at <a href='http://www.google.com/recaptcha/mailhide/apikey'>http://www.google.com/recaptcha/mailhide/apikey</a>");
|
||||
}
|
||||
|
||||
|
||||
$ky = pack('H*', $privkey);
|
||||
$cryptmail = _recaptcha_aes_encrypt ($email, $ky);
|
||||
|
||||
return "http://www.google.com/recaptcha/mailhide/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
|
||||
}
|
||||
|
||||
/**
|
||||
* gets the parts of the email to expose to the user.
|
||||
* eg, given johndoe@example,com return ["john", "example.com"].
|
||||
* the email is then displayed as john...@example.com
|
||||
*/
|
||||
function _recaptcha_mailhide_email_parts ($email) {
|
||||
$arr = preg_split("/@/", $email );
|
||||
|
||||
if (strlen ($arr[0]) <= 4) {
|
||||
$arr[0] = substr ($arr[0], 0, 1);
|
||||
} else if (strlen ($arr[0]) <= 6) {
|
||||
$arr[0] = substr ($arr[0], 0, 3);
|
||||
} else {
|
||||
$arr[0] = substr ($arr[0], 0, 4);
|
||||
}
|
||||
return $arr;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets html to display an email address given a public an private key.
|
||||
* to get a key, go to:
|
||||
*
|
||||
* http://www.google.com/recaptcha/mailhide/apikey
|
||||
*/
|
||||
function recaptcha_mailhide_html($pubkey, $privkey, $email) {
|
||||
$emailparts = _recaptcha_mailhide_email_parts ($email);
|
||||
$url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
|
||||
|
||||
return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
|
||||
"' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);
|
||||
|
||||
}
|
||||
|
||||
|
||||
?>
|
||||
Loading…
x
Reference in New Issue
Block a user