* @copyright Copyright © 2005, Falko Timme */ class validate_dns { function validate_field($field, $area, $zoneid, $wildcard_allowed = 1){ //$desc: Name, Data, RP mbox, RP txtref, SRV target, Zone origin, Name server, Admin email global $app, $conf; switch ($area) { case "Name": $desc = $app->tform->wordbook['name_txt']; break; case "Data": $desc = $app->tform->wordbook['data_txt']; break; case "RP mbox": $desc = $app->tform->wordbook['rp_mbox_txt']; break; case "RP txtref": $desc = $app->tform->wordbook['rp_txtref_txt']; break; case "SRV target": $desc = $app->tform->wordbook['srv_target_txt']; break; case "Zone origin": $desc = $app->tform->wordbook['zone_origin_txt']; break; case "Name server": $desc = $app->tform->wordbook['ns_txt']; break; case "Admin email": $desc = $app->tform->wordbook['mbox_txt']; break; } $error = ''; $valid_characters = "*ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890-_"; if(strlen($field) > 255) $error .= $desc." ".$app->tform->wordbook['error_255_characters']."
\r\n"; $parts = explode(".", $field); $i = 0; foreach ($parts as $part){ $i++; if(strlen($part) > 63) $error .= $desc." ".$app->tform->wordbook['error_63_characters']."
\r\n"; if(strspn($part, $valid_characters) != strlen($part)) $error .= $desc." ".$app->tform->wordbook['error_invalid_characters']."
\r\n"; if(substr($part, 0, 1) == '-') $error .= $desc." ".$app->tform->wordbook['error_hyphen_begin']."
\r\n"; if(substr($part, -1) == '-') $error .= $desc." ".$app->tform->wordbook['error_hyphen_end']."
\r\n"; if(strstr($part, "*")){ if($wildcard_allowed){ if($i != 1) $error .= $desc." ".$app->tform->wordbook['error_wildcard_non_initial_part']."
\r\n"; if($part != "*") $error .= $desc." ".$app->tform->wordbook['error_wildcard_mix']."
\r\n"; } else { $error .= $desc." ".$app->tform->wordbook['error_no_wildcard_allowed']."
\r\n"; } } } if(substr($field, -1) == '.' && $area == 'Name'){ $soa = $app->db->queryOneRecord("SELECT * FROM soa WHERE id = ".$zoneid); if(substr($field, (strlen($field) - strlen($soa['origin']))) != $soa['origin']) $error .= $desc." ".$app->tform->wordbook['error_out_of_zone']."
\r\n"; } return $error; } function validate_rp_data(&$data, $zoneid){ global $app, $conf; $error = ''; $fields = explode(" ", trim($data)); if(count($fields) != 2) return $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_invalid_rp']."
\r\n"; $mbox = $fields[0]; $txtref = $fields[1]; $error .= $this->validate_field($mbox, 'RP mbox', $zoneid, 0); $error .= $this->validate_field($txtref, 'RP txtref', $zoneid, 0); $data = $mbox." ".$txtref; return $error; } function validate_srv_data(&$data, $zoneid){ global $app, $conf; $error = ''; $fields = explode(" ", trim($data)); if(count($fields) != 3) return $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_invalid_srv']."
\r\n"; $weight = $fields[0]; $port = $fields[1]; $target = $fields[2]; if($weight < 0 || $weight > 65535) $error .= $app->tform->wordbook['weight_txt']." (\"" . htmlentities($weight)."\") ".$app->tform->wordbook['error_srv_out_of_range']."
\r\n"; if ($port < 0 || $port > 65535) $error .= $app->tform->wordbook['port_txt']." (\"".htmlentities($port)."\") ".$app->tform->wordbook['error_srv_out_of_range']."
\r\n"; $error .= $this->validate_field($target, "SRV target", $zoneid, 0); $data = (int)$weight." ".(int)$port." ".$target; return $error; } function is_integer($value, $fieldname, $zero_allowed = 0){ global $app, $conf; $error = ''; if(intval($value) != $value || !is_numeric($value)) $error .= $fieldname." ".$app->tform->wordbook['error_must_be_integer']."
\r\n"; if($value > 2147483647) $error .= $fieldname." ".$app->tform->wordbook['error_must_not_be_greater_than_2147483647']."
\r\n"; if(!$zero_allowed){ if($value <= 0) $error .= $fieldname." ".$app->tform->wordbook['error_must_be_positive']."
\r\n"; } else { if($value < 0) $error .= $fieldname." ".$app->tform->wordbook['error_must_not_be_negative']."
\r\n"; } return $error; } function validate_rr(&$rr){ global $app, $conf; $error = ''; $tmp_rr = $rr; foreach($tmp_rr as $key => $val){ $rr[$key] = trim($val); } unset($tmp_rr); $error .= $this->validate_field($rr['name'], 'Name', $rr['zone'], 1); switch ($rr['type']) { case "A": $ip_parts = explode(".", $rr['data']); if(count($ip_parts) != 4){ $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_a']."
\r\n"; } else { for($n = 0; $n < 4; $n++){ $q = $ip_parts[$n]; if(!is_numeric($q) || (int)$q < 0 || (int)$q > 255) $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_a']."
\r\n"; } } $rr['data'] = (int)$ip_parts[0].".".(int)$ip_parts[1].".".(int)$ip_parts[2].".".(int)$ip_parts[3]; break; case "AAAA": $valid_chars = "ABCDEFabcdef1234567890:"; if(strspn($rr['data'], $valid_chars) != strlen($rr['data'])) $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_aaaa']."
\r\n"; break; case "ALIAS": $error .= $this->validate_field($rr['data'], 'Data', $rr['zone'], 0); break; case "CNAME": $error .= $this->validate_field($rr['data'], 'Data', $rr['zone'], 0); break; case "HINFO": if(!strchr($rr['data'], ' ')) $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_hinfo']."
\r\n"; break; case "MX": $error .= $this->validate_field($rr['data'], 'Data', $rr['zone'], 0); break; case "NS": $error .= $this->validate_field($rr['data'], 'Data', $rr['zone'], 0); break; case "PTR": $error .= $this->validate_field($rr['data'], 'Data', $rr['zone'], 0); if(substr($rr['data'], -1) != '.') $error .= $app->tform->wordbook['data_txt']." ".$app->tform->wordbook['error_ptr']."
\r\n"; break; case "RP": $error .= $this->validate_rp_data($rr['data'], $rr['zone']); break; case "SRV": $error .= $this->validate_srv_data($rr['data'], $rr['zone']); break; case "TXT": break; } $error .= $this->is_integer($rr['aux'], $app->tform->wordbook['aux_txt'], 1); $error .= $this->is_integer($rr['ttl'], $app->tform->wordbook['ttl_txt']); return $error; } function validate_soa(&$soa){ global $app, $conf; $error = ''; $tmp_soa = $soa; foreach($tmp_soa as $key => $val){ if($key != 'active') $soa[$key] = trim($val); } unset($tmp_soa); if($soa['origin'] == '') $error .= $app->tform->wordbook['origin_txt']." ".$app->tform->wordbook['error_empty']."
\r\n"; if(substr($soa['origin'], -1) != '.') $error .= $app->tform->wordbook['origin_txt']." ".$app->tform->wordbook['error_dot']."
\r\n"; $error .= $this->validate_field($soa['origin'], "Zone origin", $soa['id'], 0); $error .= $this->is_integer($soa['ttl'], $app->tform->wordbook['ttl_txt']); if($soa['ns'] == '') $error .= $app->tform->wordbook['ns_txt']." ".$app->tform->wordbook['error_empty']."
\r\n"; $error .= $this->validate_field($soa['ns'], "Name server", $soa['id'], 0); if($soa['mbox'] == '') $error .= $app->tform->wordbook['mbox_txt']." ".$app->tform->wordbook['error_empty']."
\r\n"; $error .= $this->validate_field($soa['mbox'], "Admin email", $soa['id'], 0); $error .= $this->is_integer($soa['refresh'], $app->tform->wordbook['refresh_txt']); $error .= $this->is_integer($soa['retry'], $app->tform->wordbook['retry_txt']); $error .= $this->is_integer($soa['expire'], $app->tform->wordbook['expire_txt']); $error .= $this->is_integer($soa['minimum'], $app->tform->wordbook['minimum_txt']); return $error; } }