1 | <?php |
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2 | # -- BEGIN LICENSE BLOCK --------------------------------------- |
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3 | # |
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4 | # This file is part of Antispam, a plugin for Dotclear 2. |
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5 | # |
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6 | # Copyright (c) 2003-2013 Olivier Meunier & Association Dotclear |
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7 | # Licensed under the GPL version 2.0 license. |
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8 | # See LICENSE file or |
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9 | # http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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10 | # |
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11 | # -- END LICENSE BLOCK ----------------------------------------- |
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12 | if (!defined('DC_RC_PATH')) { return; } |
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13 | |
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14 | class dcFilterAkismet extends dcSpamFilter |
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15 | { |
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16 | public $name = 'Akismet'; |
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17 | public $has_gui = true; |
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18 | public $active = false; |
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19 | |
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20 | public function __construct($core) |
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21 | { |
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22 | parent::__construct($core); |
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23 | |
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24 | if (defined('DC_AKISMET_SUPER') && DC_AKISMET_SUPER && !$core->auth->isSuperAdmin()) { |
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25 | $this->has_gui = false; |
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26 | } |
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27 | } |
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28 | |
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29 | protected function setInfo() |
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30 | { |
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31 | $this->description = __('Akismet spam filter'); |
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32 | } |
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33 | |
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34 | public function getStatusMessage($status,$comment_id) |
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35 | { |
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36 | return sprintf(__('Filtered by %s.'),$this->guiLink()); |
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37 | } |
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38 | |
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39 | private function akInit() |
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40 | { |
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41 | $blog =& $this->core->blog; |
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42 | |
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43 | if (!$blog->settings->akismet->ak_key) { |
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44 | return false; |
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45 | } |
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46 | |
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47 | return new akismet($blog->url,$blog->settings->akismet->ak_key); |
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48 | } |
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49 | |
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50 | public function isSpam($type,$author,$email,$site,$ip,$content,$post_id,&$status) |
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51 | { |
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52 | if (($ak = $this->akInit()) === false) { |
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53 | return; |
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54 | } |
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55 | |
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56 | $blog =& $this->core->blog; |
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57 | |
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58 | try |
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59 | { |
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60 | if ($ak->verify()) |
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61 | { |
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62 | $post = $blog->getPosts(array('post_id' => $post_id)); |
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63 | |
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64 | $c = $ak->comment_check( |
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65 | $post->getURL(), |
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66 | $type, |
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67 | $author, |
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68 | $email, |
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69 | $site, |
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70 | $content |
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71 | ); |
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72 | |
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73 | if ($c) { |
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74 | $status = 'Filtered by Akismet'; |
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75 | return true; |
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76 | } |
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77 | } |
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78 | } catch (Exception $e) {} # If http or akismet is dead, we don't need to know it |
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79 | } |
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80 | |
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81 | public function trainFilter($status,$filter,$type,$author,$email,$site,$ip,$content,$rs) |
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82 | { |
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83 | # We handle only false positive from akismet |
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84 | if ($status == 'spam' && $filter != 'dcFilterAkismet') |
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85 | { |
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86 | return; |
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87 | } |
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88 | |
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89 | $f = $status == 'spam' ? 'submit_spam' : 'submit_ham'; |
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90 | |
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91 | if (($ak = $this->akInit()) === false) { |
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92 | return; |
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93 | } |
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94 | |
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95 | try |
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96 | { |
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97 | if ($ak->verify()) { |
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98 | $ak->{$f}($rs->getPostURL(),$type,$author,$email,$site,$content); |
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99 | } |
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100 | } catch (Exception $e) {} # If http or akismet is dead, we don't need to know it |
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101 | } |
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102 | |
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103 | public function gui($url) |
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104 | { |
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105 | $blog =& $this->core->blog; |
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106 | |
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107 | $ak_key = $blog->settings->akismet->ak_key; |
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108 | $ak_verified = null; |
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109 | |
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110 | if (isset($_POST['ak_key'])) |
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111 | { |
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112 | try |
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113 | { |
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114 | $ak_key = $_POST['ak_key']; |
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115 | |
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116 | $blog->settings->addNamespace('akismet'); |
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117 | $blog->settings->akismet->put('ak_key',$ak_key,'string'); |
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118 | |
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119 | http::redirect($url.'&up=1'); |
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120 | } |
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121 | catch (Exception $e) |
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122 | { |
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123 | $this->core->error->add($e->getMessage()); |
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124 | } |
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125 | } |
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126 | |
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127 | if ($blog->settings->akismet->ak_key) |
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128 | { |
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129 | try { |
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130 | $ak = new akismet($blog->url,$blog->settings->akismet->ak_key); |
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131 | $ak_verified = $ak->verify(); |
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132 | } catch (Exception $e) { |
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133 | $this->core->error->add($e->getMessage()); |
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134 | } |
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135 | } |
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136 | |
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137 | $res = |
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138 | '<form action="'.html::escapeURL($url).'" method="post" class="fieldset">'. |
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139 | '<p><label for="ak_key" class="classic">'.__('Akismet API key:').' '. |
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140 | form::field('ak_key',12,128,$ak_key).'</label>'; |
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141 | |
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142 | if ($ak_verified !== null) { |
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143 | if ($ak_verified) { |
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144 | $res .= ' <img src="images/check-on.png" alt="" /> '.__('API key verified'); |
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145 | } else { |
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146 | $res .= ' <img src="images/check-off.png" alt="" /> '.__('API key not verified'); |
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147 | } |
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148 | } |
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149 | |
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150 | $res .= '</p>'; |
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151 | |
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152 | $res .= |
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153 | '<p><a href="http://akismet.com/">'.__('Get your own API key').'</a></p>'. |
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154 | '<p><input type="submit" value="'.__('Save').'" />'. |
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155 | $this->core->formNonce().'</p>'. |
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156 | '</form>'; |
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157 | |
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158 | return $res; |
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159 | } |
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160 | } |
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161 | |
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162 | class akismet extends netHttp |
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163 | { |
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164 | protected $base_host = 'rest.akismet.com'; |
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165 | protected $ak_host = ''; |
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166 | protected $ak_version = '1.1'; |
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167 | protected $ak_path = '/%s/%s'; |
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168 | |
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169 | protected $ak_key = null; |
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170 | protected $blog_url; |
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171 | |
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172 | protected $timeout = 3; |
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173 | |
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174 | public function __construct($blog_url,$api_key) |
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175 | { |
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176 | $this->blog_url = $blog_url; |
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177 | $this->ak_key = $api_key; |
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178 | |
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179 | $this->ak_path = sprintf($this->ak_path,$this->ak_version,'%s'); |
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180 | $this->ak_host = $this->ak_key.'.'.$this->base_host; |
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181 | |
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182 | parent::__construct($this->ak_host,80); |
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183 | } |
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184 | |
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185 | public function verify() |
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186 | { |
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187 | $this->host = $this->base_host; |
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188 | $path = sprintf($this->ak_path,'verify-key'); |
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189 | |
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190 | $data = array( |
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191 | 'key' => $this->ak_key, |
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192 | 'blog' => $this->blog_url |
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193 | ); |
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194 | |
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195 | if ($this->post($path,$data,'UTF-8')) |
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196 | { |
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197 | return $this->getContent() == 'valid'; |
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198 | } |
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199 | |
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200 | return false; |
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201 | } |
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202 | |
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203 | public function comment_check($permalink,$type,$author,$email,$url,$content) |
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204 | { |
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205 | $info_ignore = array('HTTP_COOKIE'); |
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206 | $info = array(); |
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207 | |
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208 | foreach ($_SERVER as $k => $v) { |
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209 | if (strpos($k,'HTTP_') === 0 && !in_array($k,$info_ignore)) { |
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210 | $info[$k] = $v; |
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211 | } |
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212 | } |
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213 | |
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214 | return $this->callFunc('comment-check',$permalink,$type,$author,$email,$url,$content,$info); |
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215 | } |
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216 | |
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217 | public function submit_spam($permalink,$type,$author,$email,$url,$content) |
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218 | { |
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219 | $this->callFunc('submit-spam',$permalink,$type,$author,$email,$url,$content); |
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220 | return true; |
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221 | } |
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222 | |
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223 | public function submit_ham($permalink,$type,$author,$email,$url,$content) |
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224 | { |
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225 | $this->callFunc('submit-ham',$permalink,$type,$author,$email,$url,$content); |
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226 | return true; |
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227 | } |
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228 | |
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229 | protected function callFunc($function,$permalink,$type,$author,$email,$url,$content,$info=array()) |
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230 | { |
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231 | $ua = isset($info['HTTP_USER_AGENT']) ? $info['HTTP_USER_AGENT'] : ''; |
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232 | $referer = isset($info['HTTP_REFERER']) ? $info['HTTP_REFERER'] : ''; |
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233 | |
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234 | # Prepare comment data |
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235 | $data = array( |
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236 | 'blog' => $this->blog_url, |
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237 | 'user_ip' => http::realIP(), |
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238 | 'user_agent' => $ua, |
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239 | 'referrer' => $referer, |
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240 | 'permalink' => $permalink, |
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241 | 'comment_type' => $type, |
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242 | 'comment_author' => $author, |
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243 | 'comment_author_email' => $email, |
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244 | 'comment_author_url' => $url, |
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245 | 'comment_content' => $content |
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246 | ); |
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247 | |
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248 | $data = array_merge($data,$info); |
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249 | |
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250 | $this->host = $this->ak_host; |
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251 | $path = sprintf($this->ak_path,$function); |
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252 | |
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253 | if (!$this->post($path,$data,'UTF-8')) { |
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254 | throw new Exception('HTTP error: '.$this->getError()); |
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255 | } |
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256 | |
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257 | return $this->getContent() == 'true'; |
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258 | } |
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259 | } |
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260 | ?> |
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