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) 2003-2011 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 dcAntispam |
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15 | { |
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16 | public static $filters; |
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17 | |
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18 | public static function initFilters() |
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19 | { |
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20 | global $core; |
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21 | |
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22 | if (!isset($core->spamfilters)) { |
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23 | return; |
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24 | } |
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25 | |
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26 | self::$filters = new dcSpamFilters($core); |
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27 | self::$filters->init($core->spamfilters); |
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28 | } |
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29 | |
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30 | public static function isSpam($cur) |
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31 | { |
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32 | self::initFilters(); |
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33 | self::$filters->isSpam($cur); |
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34 | } |
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35 | |
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36 | public static function trainFilters($blog,$cur,$rs) |
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37 | { |
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38 | $status = null; |
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39 | # From ham to spam |
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40 | if ($rs->comment_status != -2 && $cur->comment_status == -2) { |
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41 | $status = 'spam'; |
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42 | } |
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43 | |
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44 | # From spam to ham |
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45 | if ($rs->comment_status == -2 && $cur->comment_status == 1) { |
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46 | $status = 'ham'; |
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47 | } |
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48 | |
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49 | # the status of this comment has changed |
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50 | if ($status) |
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51 | { |
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52 | $filter_name = $rs->exists('comment_spam_filter') ? $rs->comment_spam_filter : null; |
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53 | |
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54 | self::initFilters(); |
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55 | self::$filters->trainFilters($rs,$status,$filter_name); |
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56 | } |
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57 | } |
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58 | |
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59 | public static function statusMessage($rs) |
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60 | { |
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61 | if ($rs->exists('comment_status') && $rs->comment_status == -2) |
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62 | { |
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63 | $filter_name = $rs->exists('comment_spam_filter') ? $rs->comment_spam_filter : null; |
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64 | |
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65 | self::initFilters(); |
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66 | |
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67 | return |
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68 | '<p><strong>'.__('This comment is a spam:').'</strong> '. |
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69 | self::$filters->statusMessage($rs,$filter_name).'</p>'; |
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70 | } |
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71 | } |
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72 | |
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73 | public static function dashboardIcon($core, $icons) |
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74 | { |
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75 | if (($count = self::countSpam($core)) > 0) { |
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76 | $str = ($count > 1) ? __('(including %d spam comments)') : __('(including %d spam comment)'); |
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77 | $icons['comments'][0] .= '</a> <br /><a href="comments.php?status=-2"><span>'.sprintf($str,$count).'</span>'; |
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78 | } |
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79 | } |
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80 | |
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81 | public static function dashboardIconTitle($core) |
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82 | { |
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83 | if (($count = self::countSpam($core)) > 0) { |
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84 | $str = ($count > 1) ? __('(including %d spam comments)') : __('(including %d spam comment)'); |
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85 | return '</a> <br /><a href="comments.php?status=-2"><span>'.sprintf($str,$count).'</span>'; |
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86 | } else { |
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87 | return ''; |
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88 | } |
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89 | } |
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90 | |
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91 | public static function countSpam($core) |
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92 | { |
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93 | return $core->blog->getComments(array('comment_status'=>-2),true)->f(0); |
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94 | } |
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95 | |
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96 | public static function countPublishedComments($core) |
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97 | { |
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98 | return $core->blog->getComments(array('comment_status'=>1),true)->f(0); |
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99 | } |
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100 | |
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101 | public static function delAllSpam($core, $beforeDate = null) |
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102 | { |
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103 | $strReq = |
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104 | 'SELECT comment_id '. |
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105 | 'FROM '.$core->prefix.'comment C '. |
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106 | 'JOIN '.$core->prefix.'post P ON P.post_id = C.post_id '. |
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107 | "WHERE blog_id = '".$core->con->escape($core->blog->id)."' ". |
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108 | 'AND comment_status = -2 '; |
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109 | if ($beforeDate) { |
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110 | $strReq .= 'AND comment_dt < \''.$beforeDate.'\' '; |
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111 | } |
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112 | |
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113 | $rs = $core->con->select($strReq); |
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114 | $r = array(); |
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115 | while ($rs->fetch()) { |
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116 | $r[] = (integer) $rs->comment_id; |
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117 | } |
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118 | |
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119 | if (empty($r)) { |
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120 | return; |
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121 | } |
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122 | |
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123 | $strReq = |
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124 | 'DELETE FROM '.$core->prefix.'comment '. |
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125 | 'WHERE comment_id '.$core->con->in($r).' '; |
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126 | |
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127 | $core->con->execute($strReq); |
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128 | } |
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129 | |
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130 | public static function getUserCode($core) |
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131 | { |
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132 | $code = |
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133 | pack('a32',$core->auth->userID()). |
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134 | pack('H*',crypt::hmac(DC_MASTER_KEY,$core->auth->getInfo('user_pwd'))); |
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135 | return bin2hex($code); |
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136 | } |
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137 | |
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138 | public static function checkUserCode($core,$code) |
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139 | { |
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140 | $code = pack('H*',$code); |
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141 | |
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142 | $user_id = trim(@pack('a32',substr($code,0,32))); |
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143 | $pwd = @unpack('H40hex',substr($code,32,40)); |
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144 | |
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145 | if ($user_id === false || $pwd === false) { |
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146 | return false; |
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147 | } |
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148 | |
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149 | $pwd = $pwd['hex']; |
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150 | |
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151 | $strReq = 'SELECT user_id, user_pwd '. |
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152 | 'FROM '.$core->prefix.'user '. |
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153 | "WHERE user_id = '".$core->con->escape($user_id)."' "; |
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154 | |
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155 | $rs = $core->con->select($strReq); |
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156 | |
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157 | if ($rs->isEmpty()) { |
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158 | return false; |
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159 | } |
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160 | |
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161 | if (crypt::hmac(DC_MASTER_KEY,$rs->user_pwd) != $pwd) { |
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162 | return false; |
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163 | } |
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164 | |
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165 | $permissions = $core->getBlogPermissions($core->blog->id); |
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166 | |
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167 | if ( empty($permissions[$rs->user_id]) ) { |
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168 | return false; |
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169 | } |
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170 | |
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171 | return $rs->user_id; |
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172 | } |
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173 | |
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174 | public static function purgeOldSpam($core) |
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175 | { |
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176 | $defaultDateLastPurge = time(); |
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177 | $defaultModerationTTL = '7'; |
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178 | $init = false; |
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179 | |
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180 | // settings |
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181 | $core->blog->settings->addNamespace('antispam'); |
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182 | |
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183 | $dateLastPurge = $core->blog->settings->antispam->antispam_date_last_purge; |
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184 | if ($dateLastPurge === null) { |
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185 | $init = true; |
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186 | $core->blog->settings->antispam->put('antispam_date_last_purge',$defaultDateLastPurge,'integer','Antispam Date Last Purge (unix timestamp)',true,false); |
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187 | $dateLastPurge = $defaultDateLastPurge; |
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188 | } |
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189 | $moderationTTL = $core->blog->settings->antispam->antispam_moderation_ttl; |
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190 | if ($moderationTTL === null) { |
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191 | $core->blog->settings->antispam->put('antispam_moderation_ttl',$defaultModerationTTL,'integer','Antispam Moderation TTL (days)',true,false); |
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192 | $moderationTTL = $defaultModerationTTL; |
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193 | } |
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194 | |
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195 | if ($moderationTTL < 0) { |
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196 | // disabled |
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197 | return; |
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198 | } |
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199 | |
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200 | // we call the purge every day |
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201 | if ((time()-$dateLastPurge) > (86400)) { |
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202 | // update dateLastPurge |
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203 | if (!$init) { |
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204 | $core->blog->settings->antispam->put('antispam_date_last_purge',time(),null,null,true,false); |
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205 | } |
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206 | $date = date('Y-m-d H:i:s', time() - $moderationTTL*86400); |
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207 | dcAntispam::delAllSpam($core, $date); |
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208 | } |
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209 | } |
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210 | } |
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211 | ?> |
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