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702 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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1016 | daniel-mar | 5 | * Copyright 2019 - 2022 Daniel Marschall, ViaThinkSoft |
702 | daniel-mar | 6 | * |
7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
1050 | daniel-mar | 20 | namespace ViaThinkSoft\OIDplus; |
702 | daniel-mar | 21 | |
22 | class OIDplusCaptchaPluginRecaptcha extends OIDplusCaptchaPlugin { |
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23 | |||
1016 | daniel-mar | 24 | /*public*/ const RECAPTCHA_V2_CHECKBOX = 1; |
25 | /*public*/ const RECAPTCHA_V2_INVISIBLE = 2; |
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26 | /*public*/ const RECAPTCHA_V3 = 3; |
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27 | |||
702 | daniel-mar | 28 | public static function id(): string { |
1016 | daniel-mar | 29 | return 'reCAPTCHA'; // TODO: Now it is called "reCAPTCHA" |
702 | daniel-mar | 30 | } |
31 | |||
1016 | daniel-mar | 32 | public function isVisible(): bool { |
33 | return OIDplus::baseConfig()->getValue('RECAPTCHA_VERSION', self::RECAPTCHA_V2_CHECKBOX) == self::RECAPTCHA_V2_CHECKBOX; |
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709 | daniel-mar | 34 | } |
35 | |||
702 | daniel-mar | 36 | public function captchaGenerate($header_text=null, $footer_text=null) { |
1016 | daniel-mar | 37 | return '<noscript>'. |
702 | daniel-mar | 38 | '<p><font color="red">'._L('You need to enable JavaScript to solve the CAPTCHA.').'</font></p>'. |
39 | '</noscript>'. |
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1016 | daniel-mar | 40 | (!$this->isVisible() || !$header_text ? '' : '<p>'.$header_text.'</p>'). |
41 | '<div id="recaptcha"></div>'. |
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42 | '<input type="hidden" id="oidplus-recaptcha-response" name="oidplus-recaptcha-response">'. |
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43 | '<script>'. |
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44 | // ' $("form").submit(function(e){'. |
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45 | // // TODO: The form must not be submitted before recaptchaFinished() is called! |
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46 | // ' event.preventDefault();'. |
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47 | // ' });'. |
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48 | ' var recaptchaLoaded = function() {'. |
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49 | ' console.log("reCAPTCHA ready");'. |
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50 | ' grecaptcha.render("recaptcha", {'. |
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51 | ' "sitekey": "'.OIDplus::baseConfig()->getValue('RECAPTCHA_PUBLIC', '').'",'. |
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52 | ($this->isVisible() ? '' : |
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53 | ' "size": "invisible",'). |
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54 | ' "callback": function (token) {'. // TODO: also 'expired-callback' and 'error-callback' |
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55 | ' console.log("reCAPTCHA solved");'. |
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56 | ' document.getElementById("oidplus-recaptcha-response").value = token;'. |
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57 | ' }'. |
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58 | ' });'. |
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59 | ($this->isVisible() ? '' : |
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60 | ' grecaptcha.execute();'). |
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61 | ' };'. |
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62 | ' var oidplus_captcha_response = function() {'. |
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63 | ' return document.getElementById("oidplus-recaptcha-response").value;'. |
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64 | ' };'. |
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65 | ' var oidplus_captcha_reset = function() {'. |
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66 | ' grecaptcha.reset();'. |
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67 | ($this->isVisible() ? '' : |
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68 | ' grecaptcha.execute();'). |
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69 | ' };'. |
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70 | '</script>'. |
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71 | '<script src="https://www.google.com/recaptcha/api.js?onload=recaptchaLoaded&render=explicit" async defer></script>'. |
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72 | (!$this->isVisible() || !$footer_text ? '' : '<p>'.$footer_text.'</p>'); |
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702 | daniel-mar | 73 | } |
74 | |||
75 | public function captchaVerify($params, $fieldname=null) { |
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1001 | daniel-mar | 76 | $secret=OIDplus::baseConfig()->getValue('RECAPTCHA_PRIVATE', ''); |
77 | |||
1016 | daniel-mar | 78 | if (is_null($fieldname)) $fieldname = 'oidplus-recaptcha-response'; // no individual AJAX field name (created by oidplus_captcha_response()) means that it is a plain POST event (e.g. by oobe.php) |
702 | daniel-mar | 79 | _CheckParamExists($params, $fieldname); |
80 | $response=$params[$fieldname]; |
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1016 | daniel-mar | 81 | |
82 | $verify=url_get_contents('https://www.google.com/recaptcha/api/siteverify?secret='.urlencode($secret).'&response='.urlencode($response).'&remoteip='.urlencode($_SERVER['REMOTE_ADDR'])); |
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702 | daniel-mar | 83 | if (!$verify) { |
1016 | daniel-mar | 84 | throw new OIDplusException(_L('CAPTCHA not successfully verified').' (Web request failed)'); |
702 | daniel-mar | 85 | } |
1001 | daniel-mar | 86 | $captcha_success=@json_decode($verify); |
1016 | daniel-mar | 87 | $SCORE_THRESHOLD = 0.5; // TODO: Make Score configurable (only V3) |
88 | if (!$captcha_success) { |
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1022 | daniel-mar | 89 | throw new OIDplusException(_L('CAPTCHA not successfully verified').' ('._L('JSON Decode failed').')'); |
702 | daniel-mar | 90 | } |
1016 | daniel-mar | 91 | if ($captcha_success->success==false) { |
1022 | daniel-mar | 92 | throw new OIDplusException(_L('CAPTCHA not successfully verified').' ('._L('Failed').')'); |
1016 | daniel-mar | 93 | } |
94 | if (isset($captcha_success->score) && ($captcha_success->score < $SCORE_THRESHOLD)) { |
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1022 | daniel-mar | 95 | throw new OIDplusException(_L('CAPTCHA not successfully verified').' ('._L('Score %1 too low', $captcha_success->score).')'); |
1016 | daniel-mar | 96 | } |
702 | daniel-mar | 97 | } |
98 | |||
99 | public static function setupHTML(): string { |
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100 | return '<div id="CAPTCHAPLUGIN_PARAMS_RECAPTCHA">'. |
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101 | '<p>(<a href="https://developers.google.com/recaptcha/intro" target="_blank">'._L('more information and obtain key').'</a>)</p>'. |
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1016 | daniel-mar | 102 | '<p>'._L('reCAPTCHA Version').'<br><select id="recaptcha_version">'. |
1050 | daniel-mar | 103 | // Note: JavaScript will add "\ViaThinkSoft\OIDplus\OIDplusCaptchaPluginRecaptcha::" in front of the name |
104 | ' <option name="RECAPTCHA_V2_CHECKBOX">reCAPTCHA V2 Checkbox</option>'. |
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105 | ' <option name="RECAPTCHA_V2_INVISIBLE">reCAPTCHA V2 Invisible</option>'. |
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106 | ' <option name="RECAPTCHA_V3">reCAPTCHA V3</option>'. |
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1016 | daniel-mar | 107 | '</select></p>'. |
702 | daniel-mar | 108 | '<p>'._L('reCAPTCHA Public key').'<br><input id="recaptcha_public" type="text" onkeypress="rebuild()" onkeyup="rebuild()"> <span id="recaptcha_public_warn"></span></p>'. |
109 | '<p>'._L('reCAPTCHA Private key').'<br><input id="recaptcha_private" type="text" onkeypress="rebuild()" onkeyup="rebuild()"> <span id="recaptcha_private_warn"></span></p>'. |
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110 | '</div>'; |
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111 | } |
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112 | |||
1001 | daniel-mar | 113 | function httpHeaderCheck(&$http_headers) { |
114 | $http_headers["Content-Security-Policy"]["script-src"][] = "https://www.google.com/"; |
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115 | $http_headers["Content-Security-Policy"]["script-src"][] = "https://www.gstatic.com/"; |
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1015 | daniel-mar | 116 | $http_headers["Content-Security-Policy"]["img-src"][] = "https://www.google.com/"; |
117 | $http_headers["Content-Security-Policy"]["img-src"][] = "https://www.gstatic.com/"; |
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118 | $http_headers["Content-Security-Policy"]["frame-src"][] = "https://www.google.com/"; |
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119 | $http_headers["Content-Security-Policy"]["frame-src"][] = "https://www.gstatic.com/"; |
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1001 | daniel-mar | 120 | } |
121 | |||
702 | daniel-mar | 122 | } |