[1849] | 1 | <?php |
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| 2 | // +-----------------------------------------------------------------------+ |
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[8728] | 3 | // | Piwigo - a PHP based photo gallery | |
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[2297] | 4 | // +-----------------------------------------------------------------------+ |
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[26461] | 5 | // | Copyright(C) 2008-2014 Piwigo Team http://piwigo.org | |
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[2297] | 6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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| 7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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| 8 | // +-----------------------------------------------------------------------+ |
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| 9 | // | This program is free software; you can redistribute it and/or modify | |
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| 10 | // | it under the terms of the GNU General Public License as published by | |
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| 11 | // | the Free Software Foundation | |
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| 12 | // | | |
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| 13 | // | This program is distributed in the hope that it will be useful, but | |
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| 14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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| 16 | // | General Public License for more details. | |
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| 17 | // | | |
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| 18 | // | You should have received a copy of the GNU General Public License | |
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| 19 | // | along with this program; if not, write to the Free Software | |
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| 20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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| 21 | // | USA. | |
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| 22 | // +-----------------------------------------------------------------------+ |
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[1849] | 23 | |
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[25548] | 24 | /** |
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| 25 | * @package functions\comment |
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| 26 | */ |
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| 27 | |
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| 28 | |
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| 29 | add_event_handler('user_comment_check', 'user_comment_check', |
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| 30 | EVENT_HANDLER_PRIORITY_NEUTRAL, 2); |
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| 31 | |
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| 32 | /** |
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| 33 | * Does basic check on comment and returns action to perform. |
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| 34 | * This method is called by a trigger_event() |
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| 35 | * |
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| 36 | * @param string $action before check |
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| 37 | * @param array $comment |
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| 38 | * @return string validate, moderate, reject |
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| 39 | */ |
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[1849] | 40 | function user_comment_check($action, $comment) |
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| 41 | { |
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| 42 | global $conf,$user; |
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| 43 | |
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| 44 | if ($action=='reject') |
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| 45 | return $action; |
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| 46 | |
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| 47 | $my_action = $conf['comment_spam_reject'] ? 'reject':'moderate'; |
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| 48 | |
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| 49 | if ($action==$my_action) |
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| 50 | return $action; |
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| 51 | |
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| 52 | // we do here only BASIC spam check (plugins can do more) |
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[2029] | 53 | if ( !is_a_guest() ) |
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[1849] | 54 | return $action; |
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| 55 | |
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| 56 | $link_count = preg_match_all( '/https?:\/\//', |
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| 57 | $comment['content'], $matches); |
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| 58 | |
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| 59 | if ( strpos($comment['author'], 'http://')!==false ) |
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| 60 | { |
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| 61 | $link_count++; |
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| 62 | } |
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[2155] | 63 | |
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[1849] | 64 | if ( $link_count>$conf['comment_spam_max_links'] ) |
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[13800] | 65 | { |
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| 66 | $_POST['cr'][] = 'links'; |
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[1849] | 67 | return $my_action; |
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[13800] | 68 | } |
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[1849] | 69 | return $action; |
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| 70 | } |
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| 71 | |
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| 72 | /** |
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[25548] | 73 | * Tries to insert a user comment and returns action to perform. |
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| 74 | * |
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[25658] | 75 | * @param array &$comm |
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[25548] | 76 | * @param string $key secret key sent back to the browser |
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[25658] | 77 | * @param array &$infos output array of error messages |
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[25548] | 78 | * @return string validate, moderate, reject |
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[1849] | 79 | */ |
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[25548] | 80 | function insert_user_comment(&$comm, $key, &$infos) |
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[1849] | 81 | { |
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| 82 | global $conf, $user; |
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[2155] | 83 | |
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| 84 | $comm = array_merge( $comm, |
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[1849] | 85 | array( |
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| 86 | 'ip' => $_SERVER['REMOTE_ADDR'], |
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| 87 | 'agent' => $_SERVER['HTTP_USER_AGENT'] |
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| 88 | ) |
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| 89 | ); |
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| 90 | |
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| 91 | $infos = array(); |
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| 92 | if (!$conf['comments_validation'] or is_admin()) |
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| 93 | { |
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| 94 | $comment_action='validate'; //one of validate, moderate, reject |
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| 95 | } |
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| 96 | else |
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| 97 | { |
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| 98 | $comment_action='moderate'; //one of validate, moderate, reject |
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| 99 | } |
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| 100 | |
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[2029] | 101 | // display author field if the user status is guest or generic |
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| 102 | if (!is_classic_user()) |
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[1849] | 103 | { |
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| 104 | if ( empty($comm['author']) ) |
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| 105 | { |
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[18164] | 106 | if ($conf['comments_author_mandatory']) |
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| 107 | { |
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[25018] | 108 | $infos[] = l10n('Username is mandatory'); |
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[18164] | 109 | $comment_action='reject'; |
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| 110 | } |
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[1849] | 111 | $comm['author'] = 'guest'; |
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| 112 | } |
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[3450] | 113 | $comm['author_id'] = $conf['guest_id']; |
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[1849] | 114 | // if a guest try to use the name of an already existing user, he must be |
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| 115 | // rejected |
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| 116 | if ( $comm['author'] != 'guest' ) |
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| 117 | { |
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| 118 | $query = ' |
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| 119 | SELECT COUNT(*) AS user_exists |
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| 120 | FROM '.USERS_TABLE.' |
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[4304] | 121 | WHERE '.$conf['user_fields']['username']." = '".addslashes($comm['author'])."'"; |
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[4325] | 122 | $row = pwg_db_fetch_assoc( pwg_query( $query ) ); |
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[1849] | 123 | if ( $row['user_exists'] == 1 ) |
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| 124 | { |
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[25018] | 125 | $infos[] = l10n('This login is already used by another user'); |
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[1849] | 126 | $comment_action='reject'; |
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| 127 | } |
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| 128 | } |
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| 129 | } |
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| 130 | else |
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| 131 | { |
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[3600] | 132 | $comm['author'] = addslashes($user['username']); |
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[3450] | 133 | $comm['author_id'] = $user['id']; |
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[1849] | 134 | } |
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[3450] | 135 | |
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[1849] | 136 | if ( empty($comm['content']) ) |
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| 137 | { // empty comment content |
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| 138 | $comment_action='reject'; |
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| 139 | } |
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| 140 | |
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[7495] | 141 | if ( !verify_ephemeral_key(@$key, $comm['image_id']) ) |
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[1849] | 142 | { |
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| 143 | $comment_action='reject'; |
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[13800] | 144 | $_POST['cr'][] = 'key'; // rvelices: I use this outside to see how spam robots work |
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[1849] | 145 | } |
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[15983] | 146 | |
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[17351] | 147 | // website |
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[18164] | 148 | if (!empty($comm['website_url'])) |
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[17351] | 149 | { |
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[26916] | 150 | $comm['website_url'] = strip_tags($comm['website_url']); |
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[18164] | 151 | if (!preg_match('/^https?/i', $comm['website_url'])) |
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| 152 | { |
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| 153 | $comm['website_url'] = 'http://'.$comm['website_url']; |
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| 154 | } |
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| 155 | if (!url_check_format($comm['website_url'])) |
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| 156 | { |
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[25018] | 157 | $infos[] = l10n('Your website URL is invalid'); |
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[18164] | 158 | $comment_action='reject'; |
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| 159 | } |
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[17351] | 160 | } |
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[18164] | 161 | |
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| 162 | // email |
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| 163 | if (empty($comm['email'])) |
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[17351] | 164 | { |
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[18164] | 165 | if (!empty($user['email'])) |
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| 166 | { |
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| 167 | $comm['email'] = $user['email']; |
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| 168 | } |
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| 169 | else if ($conf['comments_email_mandatory']) |
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| 170 | { |
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[25018] | 171 | $infos[] = l10n('Email address is missing. Please specify an email address.'); |
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[18164] | 172 | $comment_action='reject'; |
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| 173 | } |
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| 174 | } |
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| 175 | else if (!email_check_format($comm['email'])) |
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| 176 | { |
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[25018] | 177 | $infos[] = l10n('mail address must be like xxx@yyy.eee (example : jack@altern.org)'); |
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[17351] | 178 | $comment_action='reject'; |
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| 179 | } |
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| 180 | |
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[15983] | 181 | // anonymous id = ip address |
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| 182 | $ip_components = explode('.', $comm['ip']); |
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| 183 | if (count($ip_components) > 3) |
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| 184 | { |
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| 185 | array_pop($ip_components); |
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| 186 | } |
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| 187 | $comm['anonymous_id'] = implode('.', $ip_components); |
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[2155] | 188 | |
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[7784] | 189 | if ($comment_action!='reject' and $conf['anti-flood_time']>0 and !is_admin()) |
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[1849] | 190 | { // anti-flood system |
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[6604] | 191 | $reference_date = pwg_db_get_flood_period_expression($conf['anti-flood_time']); |
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| 192 | |
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[1849] | 193 | $query = ' |
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[6604] | 194 | SELECT count(1) FROM '.COMMENTS_TABLE.' |
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| 195 | WHERE date > '.$reference_date.' |
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[3450] | 196 | AND author_id = '.$comm['author_id']; |
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[15983] | 197 | if (!is_classic_user()) |
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| 198 | { |
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| 199 | $query.= ' |
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| 200 | AND anonymous_id = "'.$comm['anonymous_id'].'"'; |
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| 201 | } |
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| 202 | $query.= ' |
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| 203 | ;'; |
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| 204 | |
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[6604] | 205 | list($counter) = pwg_db_fetch_row(pwg_query($query)); |
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| 206 | if ( $counter > 0 ) |
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[1849] | 207 | { |
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[25018] | 208 | $infos[] = l10n('Anti-flood system : please wait for a moment before trying to post another comment'); |
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[1849] | 209 | $comment_action='reject'; |
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| 210 | } |
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| 211 | } |
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| 212 | |
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| 213 | // perform more spam check |
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| 214 | $comment_action = trigger_event('user_comment_check', |
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| 215 | $comment_action, $comm |
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| 216 | ); |
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| 217 | |
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| 218 | if ( $comment_action!='reject' ) |
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| 219 | { |
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| 220 | $query = ' |
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| 221 | INSERT INTO '.COMMENTS_TABLE.' |
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[18164] | 222 | (author, author_id, anonymous_id, content, date, validated, validation_date, image_id, website_url, email) |
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[1849] | 223 | VALUES ( |
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[6589] | 224 | \''.$comm['author'].'\', |
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[3450] | 225 | '.$comm['author_id'].', |
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[15983] | 226 | \''.$comm['anonymous_id'].'\', |
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[6589] | 227 | \''.$comm['content'].'\', |
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[1849] | 228 | NOW(), |
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[6589] | 229 | \''.($comment_action=='validate' ? 'true':'false').'\', |
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[1849] | 230 | '.($comment_action=='validate' ? 'NOW()':'NULL').', |
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[17351] | 231 | '.$comm['image_id'].', |
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[18164] | 232 | '.(!empty($comm['website_url']) ? '\''.$comm['website_url'].'\'' : 'NULL').', |
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| 233 | '.(!empty($comm['email']) ? '\''.$comm['email'].'\'' : 'NULL').' |
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[1849] | 234 | ) |
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| 235 | '; |
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| 236 | pwg_query($query); |
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[4892] | 237 | $comm['id'] = pwg_db_insert_id(COMMENTS_TABLE); |
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[1849] | 238 | |
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[21817] | 239 | invalidate_user_cache_nb_comments(); |
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| 240 | |
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[13800] | 241 | if ( ($conf['email_admin_on_comment'] && 'validate' == $comment_action) |
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[5195] | 242 | or ($conf['email_admin_on_comment_validation'] and 'moderate' == $comment_action)) |
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[1849] | 243 | { |
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| 244 | include_once(PHPWG_ROOT_PATH.'include/functions_mail.inc.php'); |
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| 245 | |
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[5195] | 246 | $comment_url = get_absolute_root_url().'comments.php?comment_id='.$comm['id']; |
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[1849] | 247 | |
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[25360] | 248 | $keyargs_content = array( |
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| 249 | get_l10n_args('Author: %s', stripslashes($comm['author']) ), |
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| 250 | get_l10n_args('Email: %s', stripslashes($comm['email']) ), |
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| 251 | get_l10n_args('Comment: %s', stripslashes($comm['content']) ), |
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| 252 | get_l10n_args(''), |
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| 253 | get_l10n_args('Manage this user comment: %s', $comment_url), |
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[1908] | 254 | ); |
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[1849] | 255 | |
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[5195] | 256 | if ('moderate' == $comment_action) |
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[1849] | 257 | { |
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[25360] | 258 | $keyargs_content[] = get_l10n_args('(!) This comment requires validation'); |
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[1849] | 259 | } |
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| 260 | |
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[25357] | 261 | pwg_mail_notification_admins( |
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[25360] | 262 | get_l10n_args('Comment by %s', stripslashes($comm['author']) ), |
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| 263 | $keyargs_content |
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[1849] | 264 | ); |
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| 265 | } |
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| 266 | } |
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[25548] | 267 | |
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[1849] | 268 | return $comment_action; |
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| 269 | } |
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| 270 | |
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[3445] | 271 | /** |
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[25548] | 272 | * Tries to delete a (or more) user comment. |
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| 273 | * only admin can delete all comments |
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| 274 | * other users can delete their own comments |
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[3445] | 275 | * |
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[25548] | 276 | * @param int|int[] $comment_id |
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| 277 | * @return bool false if nothing deleted |
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[3445] | 278 | */ |
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[12596] | 279 | function delete_user_comment($comment_id) |
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| 280 | { |
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[3445] | 281 | $user_where_clause = ''; |
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| 282 | if (!is_admin()) |
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| 283 | { |
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[3450] | 284 | $user_where_clause = ' AND author_id = \''.$GLOBALS['user']['id'].'\''; |
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[3445] | 285 | } |
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[12596] | 286 | |
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| 287 | if (is_array($comment_id)) |
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| 288 | $where_clause = 'id IN('.implode(',', $comment_id).')'; |
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| 289 | else |
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| 290 | $where_clause = 'id = '.$comment_id; |
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| 291 | |
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[3445] | 292 | $query = ' |
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| 293 | DELETE FROM '.COMMENTS_TABLE.' |
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[12596] | 294 | WHERE '.$where_clause. |
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[3445] | 295 | $user_where_clause.' |
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| 296 | ;'; |
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[12596] | 297 | |
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[21817] | 298 | if ( pwg_db_changes(pwg_query($query)) ) |
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[12596] | 299 | { |
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[21817] | 300 | invalidate_user_cache_nb_comments(); |
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| 301 | |
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[5707] | 302 | email_admin('delete', |
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| 303 | array('author' => $GLOBALS['user']['username'], |
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| 304 | 'comment_id' => $comment_id |
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| 305 | )); |
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[21817] | 306 | trigger_action('user_comment_deletion', $comment_id); |
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[25548] | 307 | |
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| 308 | return true; |
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[3445] | 309 | } |
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[25548] | 310 | |
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| 311 | return false; |
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[3445] | 312 | } |
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| 313 | |
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| 314 | /** |
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[25548] | 315 | * Tries to update a user comment |
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| 316 | * only admin can update all comments |
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| 317 | * users can edit their own comments if admin allow them |
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[3445] | 318 | * |
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[25548] | 319 | * @param array $comment |
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| 320 | * @param string $post_key secret key sent back to the browser |
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| 321 | * @return string validate, moderate, reject |
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[3445] | 322 | */ |
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| 323 | |
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[3488] | 324 | function update_user_comment($comment, $post_key) |
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| 325 | { |
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[18995] | 326 | global $conf, $page; |
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[3445] | 327 | |
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| 328 | $comment_action = 'validate'; |
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| 329 | |
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[7495] | 330 | if ( !verify_ephemeral_key($post_key, $comment['image_id']) ) |
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[3445] | 331 | { |
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| 332 | $comment_action='reject'; |
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| 333 | } |
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[11253] | 334 | elseif (!$conf['comments_validation'] or is_admin()) // should the updated comment must be validated |
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| 335 | { |
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| 336 | $comment_action='validate'; //one of validate, moderate, reject |
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| 337 | } |
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| 338 | else |
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| 339 | { |
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| 340 | $comment_action='moderate'; //one of validate, moderate, reject |
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| 341 | } |
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[3445] | 342 | |
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| 343 | // perform more spam check |
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[3488] | 344 | $comment_action = |
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[3445] | 345 | trigger_event('user_comment_check', |
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[3488] | 346 | $comment_action, |
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| 347 | array_merge($comment, |
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[3445] | 348 | array('author' => $GLOBALS['user']['username']) |
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| 349 | ) |
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| 350 | ); |
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| 351 | |
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[18995] | 352 | // website |
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| 353 | if (!empty($comment['website_url'])) |
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| 354 | { |
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[26916] | 355 | $comm['website_url'] = strip_tags($comm['website_url']); |
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[18995] | 356 | if (!preg_match('/^https?/i', $comment['website_url'])) |
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| 357 | { |
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| 358 | $comment['website_url'] = 'http://'.$comment['website_url']; |
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| 359 | } |
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| 360 | if (!url_check_format($comment['website_url'])) |
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| 361 | { |
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[21817] | 362 | $page['errors'][] = l10n('Your website URL is invalid'); |
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[18995] | 363 | $comment_action='reject'; |
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| 364 | } |
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| 365 | } |
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| 366 | |
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[3445] | 367 | if ( $comment_action!='reject' ) |
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| 368 | { |
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| 369 | $user_where_clause = ''; |
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| 370 | if (!is_admin()) |
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| 371 | { |
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[3450] | 372 | $user_where_clause = ' AND author_id = \''. |
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| 373 | $GLOBALS['user']['id'].'\''; |
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[3445] | 374 | } |
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[10097] | 375 | |
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[3445] | 376 | $query = ' |
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| 377 | UPDATE '.COMMENTS_TABLE.' |
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| 378 | SET content = \''.$comment['content'].'\', |
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[18995] | 379 | website_url = '.(!empty($comment['website_url']) ? '\''.$comment['website_url'].'\'' : 'NULL').', |
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[10097] | 380 | validated = \''.($comment_action=='validate' ? 'true':'false').'\', |
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| 381 | validation_date = '.($comment_action=='validate' ? 'NOW()':'NULL').' |
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[3445] | 382 | WHERE id = '.$comment['comment_id']. |
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| 383 | $user_where_clause.' |
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| 384 | ;'; |
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| 385 | $result = pwg_query($query); |
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[10097] | 386 | |
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| 387 | // mail admin and ask to validate the comment |
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| 388 | if ($result and $conf['email_admin_on_comment_validation'] and 'moderate' == $comment_action) |
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| 389 | { |
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| 390 | include_once(PHPWG_ROOT_PATH.'include/functions_mail.inc.php'); |
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| 391 | |
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| 392 | $comment_url = get_absolute_root_url().'comments.php?comment_id='.$comment['comment_id']; |
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| 393 | |
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[25360] | 394 | $keyargs_content = array( |
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| 395 | get_l10n_args('Author: %s', stripslashes($GLOBALS['user']['username']) ), |
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| 396 | get_l10n_args('Comment: %s', stripslashes($comment['content']) ), |
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| 397 | get_l10n_args(''), |
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| 398 | get_l10n_args('Manage this user comment: %s', $comment_url), |
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| 399 | get_l10n_args('(!) This comment requires validation'), |
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[10097] | 400 | ); |
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| 401 | |
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[25357] | 402 | pwg_mail_notification_admins( |
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[25360] | 403 | get_l10n_args('Comment by %s', stripslashes($GLOBALS['user']['username']) ), |
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| 404 | $keyargs_content |
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[10097] | 405 | ); |
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| 406 | } |
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| 407 | // just mail admin |
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[21817] | 408 | elseif ($result) |
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[10097] | 409 | { |
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[3445] | 410 | email_admin('edit', array('author' => $GLOBALS['user']['username'], |
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[3488] | 411 | 'content' => stripslashes($comment['content'])) ); |
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[3445] | 412 | } |
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| 413 | } |
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[10097] | 414 | |
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| 415 | return $comment_action; |
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[3445] | 416 | } |
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| 417 | |
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[25548] | 418 | /** |
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| 419 | * Notifies admins about updated or deleted comment. |
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| 420 | * Only used when no validation is needed, otherwise pwg_mail_notification_admins() is used. |
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| 421 | * |
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| 422 | * @param string $action edit, delete |
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| 423 | * @param array $comment |
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| 424 | */ |
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[3488] | 425 | function email_admin($action, $comment) |
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| 426 | { |
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[3445] | 427 | global $conf; |
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| 428 | |
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| 429 | if (!in_array($action, array('edit', 'delete')) |
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| 430 | or (($action=='edit') and !$conf['email_admin_on_comment_edition']) |
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| 431 | or (($action=='delete') and !$conf['email_admin_on_comment_deletion'])) |
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| 432 | { |
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| 433 | return; |
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| 434 | } |
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| 435 | |
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| 436 | include_once(PHPWG_ROOT_PATH.'include/functions_mail.inc.php'); |
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[3488] | 437 | |
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[25360] | 438 | $keyargs_content = array( |
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| 439 | get_l10n_args('Author: %s', $comment['author']), |
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[25357] | 440 | ); |
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| 441 | |
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[3488] | 442 | if ($action=='delete') |
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[3445] | 443 | { |
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[25360] | 444 | $keyargs_content[] = get_l10n_args('This author removed the comment with id %d', $comment['comment_id']); |
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[3445] | 445 | } |
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| 446 | else |
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| 447 | { |
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[25360] | 448 | $keyargs_content[] = get_l10n_args('This author modified following comment:'); |
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| 449 | $keyargs_content[] = get_l10n_args('Comment: %s', $comment['content']); |
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[3445] | 450 | } |
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[3488] | 451 | |
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[25357] | 452 | pwg_mail_notification_admins( |
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[25360] | 453 | get_l10n_args('Comment by %s', $comment['author']), |
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| 454 | $keyargs_content |
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| 455 | ); |
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[3445] | 456 | } |
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[5195] | 457 | |
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[25548] | 458 | /** |
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| 459 | * Returns the author id of a comment |
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| 460 | * |
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| 461 | * @param int $comment_id |
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| 462 | * @param bool $die_on_error |
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| 463 | * @return int |
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| 464 | */ |
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[5195] | 465 | function get_comment_author_id($comment_id, $die_on_error=true) |
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| 466 | { |
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| 467 | $query = ' |
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| 468 | SELECT |
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| 469 | author_id |
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| 470 | FROM '.COMMENTS_TABLE.' |
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| 471 | WHERE id = '.$comment_id.' |
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| 472 | ;'; |
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| 473 | $result = pwg_query($query); |
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| 474 | if (pwg_db_num_rows($result) == 0) |
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| 475 | { |
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| 476 | if ($die_on_error) |
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| 477 | { |
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| 478 | fatal_error('Unknown comment identifier'); |
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| 479 | } |
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| 480 | else |
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| 481 | { |
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| 482 | return false; |
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| 483 | } |
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| 484 | } |
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| 485 | |
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| 486 | list($author_id) = pwg_db_fetch_row($result); |
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| 487 | |
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| 488 | return $author_id; |
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| 489 | } |
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| 490 | |
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[12596] | 491 | /** |
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[25548] | 492 | * Tries to validate a user comment. |
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| 493 | * |
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| 494 | * @param int|int[] $comment_id |
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[12596] | 495 | */ |
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[5195] | 496 | function validate_user_comment($comment_id) |
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| 497 | { |
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[12596] | 498 | if (is_array($comment_id)) |
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| 499 | $where_clause = 'id IN('.implode(',', $comment_id).')'; |
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| 500 | else |
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| 501 | $where_clause = 'id = '.$comment_id; |
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| 502 | |
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[5195] | 503 | $query = ' |
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| 504 | UPDATE '.COMMENTS_TABLE.' |
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[6589] | 505 | SET validated = \'true\' |
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[5195] | 506 | , validation_date = NOW() |
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[12596] | 507 | WHERE '.$where_clause.' |
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[5195] | 508 | ;'; |
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| 509 | pwg_query($query); |
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[12556] | 510 | |
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[21817] | 511 | invalidate_user_cache_nb_comments(); |
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[12556] | 512 | trigger_action('user_comment_validation', $comment_id); |
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[5195] | 513 | } |
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[21817] | 514 | |
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[25548] | 515 | /** |
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| 516 | * Clears cache of nb comments for all users |
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| 517 | */ |
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[21817] | 518 | function invalidate_user_cache_nb_comments() |
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| 519 | { |
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| 520 | global $user; |
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[25548] | 521 | |
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[21817] | 522 | unset($user['nb_available_comments']); |
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[25548] | 523 | |
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[21817] | 524 | $query = ' |
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| 525 | UPDATE '.USER_CACHE_TABLE.' |
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[25548] | 526 | SET nb_available_comments = NULL |
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| 527 | ;'; |
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[21817] | 528 | pwg_query($query); |
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| 529 | } |
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| 530 | |
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[1849] | 531 | ?> |
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