如何限制访问者的ip(PHPBB的代码)Code: <?php/**************************************************************************** admin_user_ban.php* -------------------* begin : Tuesday, Jul 31, 2001* copyright : (C) 2001 The phpBB Group* email : [email]support@phpbb.com[/email]** $Id: admin_user_ban.php,v 1.21.2.2 2002/05/12 15:57:45 psotfx Exp $*****************************************************************************//**************************************************************************** This file is part of the phpBB2 port to Nuke 6.0 (c) copyright 2002* by Tom Nitzschner ([email]tom@toms-home.com[/email])* [url]http://bbtonuke.sourceforge.net[/url] (or [url]http://www.toms-home.com)[/url]** As always, make a backup before messing with anything. All code* release by me is considered sample code only. It may be fully* functual, but you use it at your own risk, if you break it,* you get to fix it too. No waranty is given or implied.** Please post all questions/request about this port on [url]http://bbtonuke.sourceforge.net[/url] first,* then on my site. All original header code and copyright messages will be maintained* to give credit where credit is due. If you modify this, the only requirement is* that you also maintain all original copyright messages. All my work is released* under the GNU GENERAL PUBLIC LICENSE. Please see the README for more information.****************************************************************************//***************************************************************************** This program is free software; you can redistribute it and/or modify* it under the terms of the GNU General Public License as published by* the Free Software Foundation; either version 2 of the License, or* (at your option) any later version.****************************************************************************/define("IN_PHPBB", 1);if ( !empty($setmodules) ){$filename = basename(__FILE__);$module["Users"]["Ban_Management"] = $filename;return;}//// Load default header//$phpbb_root_path = "./../";require($phpbb_root_path . "extension.inc");require("./pagestart." . $phpEx);//// Start program//if ( isset($HTTP_POST_VARS["submit"]) ){$user_bansql = "";$email_bansql = "";$ip_bansql = "";$user_list = array();if ( !empty($HTTP_POST_VARS["username"]) ){$this_userdata = get_userdata($HTTP_POST_VARS["username"]);if( !$this_userdata ){message_die(GENERAL_MESSAGE, $lang["No_user_id_specified"] );}$user_list[] = $this_userdata["user_id"];}$ip_list = array();if ( isset($HTTP_POST_VARS["ban_ip"]) ){$ip_list_temp = explode(",", $HTTP_POST_VARS["ban_ip"]);for($i = 0; $i < count($ip_list_temp); $i++){if ( preg_match("/^([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3})[ ]*-[ ]*([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3})$/", trim($ip_list_temp[$i]), $ip_range_explode) ){//// Don"t ask about all this, just don"t ask ... !为什么//$ip_1_counter = $ip_range_explode[1];$ip_1_end = $ip_range_explode[5];while ( $ip_1_counter <= $ip_1_end ){$ip_2_counter = ( $ip_1_counter == $ip_range_explode[1] ) ? $ip_range_explode[2] : 0;$ip_2_end = ( $ip_1_counter < $ip_1_end ) ? 254 : $ip_range_explode[6];if ( $ip_2_counter == 0 && $ip_2_end == 254 ){$ip_2_counter = 255;$ip_2_fragment = 255;$ip_list[] = encode_ip("$ip_1_counter.255.255.255");}while ( $ip_2_counter <= $ip_2_end ){$ip_3_counter = ( $ip_2_counter == $ip_range_explode[2] && $ip_1_counter == $ip_range_explode[1] ) ? $ip_range_explode[3] : 0;$ip_3_end = ( $ip_2_counter < $ip_2_end $ip_1_counter < $ip_1_end ) ? 254 : $ip_range_explode[7];if ( $ip_3_counter == 0 && $ip_3_end == 254 ){$ip_3_counter = 255;$ip_3_fragment = 255;$ip_list[] = encode_ip("$ip_1_counter.$ip_2_counter.255.255");}while ( $ip_3_counter <= $ip_3_end ){$ip_4_counter = ( $ip_3_counter == $ip_range_explode[3] && $ip_2_counter == $ip_range_explode[2] && $ip_1_counter == $ip_range_explode[1] ) ? $ip_range_explode[4] : 0;$ip_4_end = ( $ip_3_counter < $ip_3_end $ip_2_counter < $ip_2_end ) ? 254 : $ip_range_explode[8];if ( $ip_4_counter == 0 && $ip_4_end == 254 ){$ip_4_counter = 255;$ip_4_fragment = 255;$ip_list[] = encode_ip("$ip_1_counter.$ip_2_counter.$ip_3_counter.255");}while ( $ip_4_counter <= $ip_4_end ){$ip_list[] = encode_ip("$ip_1_counter.$ip_2_counter.$ip_3_counter.$ip_4_counter");$ip_4_counter++;}$ip_3_counter++;}$ip_2_counter++;}$ip_1_counter++;}}else if ( preg_match("/^([w-_].?){2,}$/is", trim($ip_list_temp[$i])) ){$ip = gethostbynamel(trim($ip_list_temp[$i]));for($j = 0; $j < count($ip); $j++){if ( !empty($ip[$j]) ){$ip_list[] = encode_ip($ip[$j]);}}}else if ( preg_match("/^([0-9]{1,3}).([0-9*]{1,3}).([0-9*]{1,3}).([0-9*]{1,3})$/", trim($ip_list_temp[$i])) ){$ip_list[] = encode_ip(str_replace("*", "255", trim($ip_list_temp[$i])));}}}$email_list = array();if ( isset($HTTP_POST_VARS["ban_email"]) ){$email_list_temp = explode(",", $HTTP_POST_VARS["ban_email"]);for($i = 0; $i < count($email_list_temp); $i++){//// This ereg match is based on one by [email]php@unreelpro.com[/email]// contained in the annotated php manual at php.com (ereg// section)//if ( eregi("^(([[:alnum:]*]+([-_.][[:alnum:]*]+)*.?)|(*))@([[:alnum:]]+([-_]?[[:alnum:]]+)*.){1,3}([[:alnum:]]{2,6})$", trim($email_list_temp[$i])) ){$email_list[] = trim($email_list_temp[$i]);}}}$sql = "SELECT *FROM " . BANLIST_TABLE;if ( !($result = $db->sql_query($sql)) ){message_die(GENERAL_ERROR, "Couldn"t obtain banlist information", "", __LINE__, __FILE__, $sql);}$current_banlist = $db->sql_fetchrowset($result);$db->sql_freeresult($result);$kill_session_sql = "";for($i = 0; $i < count($user_list); $i++){$in_banlist = false;for($j = 0; $j < count($current_banlist); $j++){if ( $user_list[$i] == $current_banlist[$j]["ban_userid"] ){$in_banlist = true;}}if ( !$in_banlist ){$kill_session_sql .= ( ( $kill_session_sql != "" ) ? " OR " : "" ) . "session_user_id = " . $user_list[$i];$sql = "INSERT INTO " . BANLIST_TABLE . " (ban_userid)VALUES (" . $user_list[$i] . ")";if ( !$db->sql_query($sql) ){message_die(GENERAL_ERROR, "Couldn"t insert ban_userid info into database", "", __LINE__, __FILE__, $sql);}}}for($i = 0; $i < count($ip_list); $i++){$in_banlist = false;for($j = 0; $j < count($current_banlist); $j++){if ( $ip_list[$i] == $current_banlist[$j]["ban_ip"] ){$in_banlist = true;}}if ( !$in_banlist ){if ( preg_match("/(ff.)|(.ff)/is", chunk_split($ip_list[$i], 2, ".")) ){$kill_ip_sql = "session_ip LIKE "" . str_replace(".", "", preg_replace("/(ff.)|(.ff)/is", "%", chunk_split($ip_list[$i], 2, "."))) . """;}else{$kill_ip_sql = "session_ip = "" . $ip_list[$i] . """;}$kill_session_sql .= ( ( $kill_session_sql != "" ) ? " OR " : "" ) . $kill_ip_sql;$sql = "INSERT INTO " . BANLIST_TABLE . " (ban_ip)VALUES ("" . $ip_list[$i] . "")";if ( !$db->sql_query($sql) ){message_die(GENERAL_ERROR, "Couldn"t insert ban_ip info into database", "", __LINE__, __FILE__, $sql);}}}//// Now we"ll delete all entries from the session table with any of the banned// user or IP info just entered into the ban table ... this will force a session// initialisation resulting in an instant ban//if ( $kill_session_sql != "" ){$sql = "DELETE FROM " . SESSIONS_TABLE . "WHERE $kill_session_sql";if ( !$db->sql_query($sql) ){message_die(GENERAL_ERROR, "Couldn"t delete banned sessions from database", "", __LINE__, __FILE__, $sql);}}for($i = 0; $i < count($email_list); $i++){$in_banlist = false;for($j = 0; $j < count($current_banlist); $j++){if ( $email_list[$i] == $current_banlist[$j]["ban_email"] ){$in_banlist = true;}}if ( !$in_banlist ){$sql = "INSERT INTO " . BANLIST_TABLE . " (ban_email)VALUES ("" . str_replace(""", """", $email_list[$i]) . "")";if ( !$db->sql_query($sql) ){message_die(GENERAL_ERROR, "Couldn"t insert ban_email info into database", "", __LINE__, __FILE__, $sql);}}}$where_sql = "";if ( isset($HTTP_POST_VARS["unban_user"]) ){$user_list = $HTTP_POST_VARS["unban_user"];for($i = 0; $i < count($user_list); $i++){if ( $user_list[$i] != -1 ){$where_sql .= ( ( $where_sql != "" ) ? ", " : "" ) . $user_list[$i];}}}if ( isset($HTTP_POST_VARS["unban_ip"]) ){$ip_list = $HTTP_POST_VARS["unban_ip"];for($i = 0; $i < count($ip_list); $i++){if ( $ip_list[$i] != -1 ){$where_sql .= ( ( $where_sql != "" ) ? ", " : "" ) . $ip_list[$i];}}}if ( isset($HTTP_POST_VARS["unban_email"]) ){$email_list = $HTTP_POST_VARS["unban_email"];for($i = 0; $i < count($email_list); $i++){if ( $email_list[$i] != -1 ){$where_sql .= ( ( $where_sql != "" ) ? ", " : "" ) . $email_list[$i];}}}if ( $where_sql != "" ){$sql = "DELETE FROM " . BANLIST_TABLE . "WHERE ban_id IN ($where_sql)";if ( !$db->sql_query($sql) ){message_die(GENERAL_ERROR, "Couldn"t delete ban info from database", "", __LINE__, __FILE__, $sql);}}$message = $lang["Ban_update_sucessful"] . "<br /><br />" . sprintf($lang["Click_return_banadmin"], "<a href="" . append_sid("admin_user_ban.$phpEx") . "">", "</a>") . "<br /><br />" . sprintf($lang["Click_return_admin_index"], "<a href="" . append_sid("index.$phpEx?pane=right") . "">", "</a>");message_die(GENERAL_MESSAGE, $message);}else{$template->set_filenames(array("body" => "admin/user_ban_body.tpl"));$template->assign_vars(array("L_BAN_TITLE" => $lang["Ban_control"],"L_BAN_EXPLAIN" => $lang["Ban_explain"],"L_BAN_EXPLAIN_WARN" => $lang["Ban_explain_warn"],"L_IP_OR_HOSTNAME" => $lang["IP_hostname"],"L_EMAIL_ADDRESS" => $lang["Email_address"],"L_SUBMIT" => $lang["Submit"],"L_RESET" => $lang["Reset"],"S_BANLIST_ACTION" => append_sid("admin_user_ban.$phpEx")));$template->assign_vars(array("L_BAN_USER" => $lang["Ban_username"],"L_BAN_USER_EXPLAIN" => $lang["Ban_username_explain"],"L_BAN_IP" => $lang["Ban_IP"],"L_BAN_IP_EXPLAIN" => $lang["Ban_IP_explain"],"L_BAN_EMAIL" => $lang["Ban_email"],"L_BAN_EMAIL_EXPLAIN" => $lang["Ban_email_explain"]));$userban_count = 0;$ipban_count = 0;$emailban_count = 0;$sql = "SELECT b.ban_id, u.user_id, u.usernameFROM " . BANLIST_TABLE . " b, " . USERS_TABLE . " uWHERE u.user_id = b.ban_useridAND b.ban_userid <> 0AND u.user_id <> " . ANONYMOUS . "ORDER BY u.user_id ASC";if ( !($result = $db->sql_query($sql)) ){message_die(GENERAL_ERROR, "Could not select current user_id ban list", "", __LINE__, __FILE__, $sql);}$user_list = $db->sql_fetchrowset($result);$db->sql_freeresult($result);$select_userlist = "";for($i = 0; $i < count($user_list); $i++){$select_userlist .= "<option value="" . $user_list[$i]["ban_id"] . "">" . $user_list[$i]["username"] . "</option>";$userban_count++;}if( $select_userlist == "" ){$select_userlist = "<option value="-1">" . $lang["No_banned_users"] . "</option>";}$select_userlist = "<select name="unban_user[]" multiple="multiple" size="5">" . $select_userlist . "</select>";$sql = "SELECT ban_id, ban_ip, ban_emailFROM " . BANLIST_TABLE;if ( !($result = $db->sql_query($sql)) ){message_die(GENERAL_ERROR, "Could not select current ip ban list", "", __LINE__, __FILE__, $sql);}$banlist = $db->sql_fetchrowset($result);$db->sql_freeresult($result);$select_iplist = "";$select_emaillist = "";for($i = 0; $i < count($banlist); $i++){$ban_id = $banlist[$i]["ban_id"];if ( !empty($banlist[$i]["ban_ip"]) ){$ban_ip = str_replace("255", "*", decode_ip($banlist[$i]["ban_ip"]));$select_iplist .= "<option value="" . $ban_id . "">" . $ban_ip . "</option>";$ipban_count++;}else if ( !empty($banlist[$i]["ban_email"]) ){$ban_email = $banlist[$i]["ban_email"];$select_emaillist .= "<option value="" . $ban_id . "">" . $ban_email . "</option>";$emailban_count++;}}if ( $select_iplist == "" ){$select_iplist = "<option value="-1">" . $lang["No_banned_ip"] . "</option>";}if ( $select_emaillist == "" ) {$select_emaillist = "<option value="-1">" . $lang["No_banned_email"] . "</option>";}$select_iplist = "<select name="unban_ip[]" multiple="multiple" size="5">" . $select_iplist . "</select>";$select_emaillist = "<select name="unban_email[]" multiple="multiple" size="5">" . $select_emaillist . "</select>";$template->assign_vars(array("L_UNBAN_USER" => $lang["Unban_username"],"L_UNBAN_USER_EXPLAIN" => $lang["Unban_username_explain"],"L_UNBAN_IP" => $lang["Unban_IP"],"L_UNBAN_IP_EXPLAIN" => $lang["Unban_IP_explain"],"L_UNBAN_EMAIL" => $lang["Unban_email"],"L_UNBAN_EMAIL_EXPLAIN" => $lang["Unban_email_explain"], "L_USERNAME" => $lang["Username"], "L_LOOK_UP" => $lang["Look_up_User"],"L_FIND_USERNAME" => $lang["Find_username"],"U_SEARCH_USER" => append_sid("search.$phpEx?mode=searchuser&popup=1&menu=1"), "S_UNBAN_USERLIST_SELECT" => $select_userlist,"S_UNBAN_IPLIST_SELECT" => $select_iplist,"S_UNBAN_EMAILLIST_SELECT" => $select_emaillist,"S_BAN_ACTION" => append_sid("admin_user_ban.$phpEx")));}$template->pparse("body");include("./page_footer_admin.".$phpEx);?>
