1884 lines
77 KiB
Lua
1884 lines
77 KiB
Lua
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--[[
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Introduction and details :
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Copyright Conor McKnight
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https://github.com/C0nw0nk/Nginx-Lua-Anti-DDoS
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Information :
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My name is Conor McKnight I am a developer of Lua, PHP, HTML, Javascript, MySQL, Visual Basics and various other languages over the years.
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This script was my soloution to check web traffic comming into webservers to authenticate that the inbound traffic is a legitimate browser and request,
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It was to help the main internet structure aswell as every form of webserver that sends traffic by HTTP(S) protect themselves from the DoS / DDoS (Distributed Denial of Service) antics of the internet.
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If you have any bugs issues or problems just post a Issue request. https://github.com/C0nw0nk/Nginx-Lua-Anti-DDoS/issues
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If you fork or make any changes to improve this or fix problems please do make a pull request for the community who also use this. https://github.com/C0nw0nk/Nginx-Lua-Anti-DDoS/pulls
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Disclaimer :
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I am not responsible for what you do with this script nor liable,
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This script was released under default Copyright Law as a proof of concept.
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For those who want to know what that means for your use of this script read the following : http://choosealicense.com/no-license/
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Legal Usage :
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For those who wish to use this in production you should contact me to purchase a private license to use this legally.
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For those who wish to use this in a commerical enviorment contact me to come to an agreement and purchase a commerical usage license.
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For those who wish to purchase the rights to this from me contact me also to discuss pricing and terms and come to a sensible agreement.
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Contact : (You can also contact me via github)
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https://www.facebook.com/C0nw0nk
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]]
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--[[
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Configuration :
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]]
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local AntiDDoSAuth = AntiDDoSAuth or {} --Define our local Table to easly change the name at anytime to prevent collisions with other scripts or global Lua variables on the server.
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--[[
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Shared memory cache
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]]
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--AntiDDoSAuth.shared_memory = ngx.shared.antiddos_auth_memory_space --What ever memory space your server has set / defined for this to use
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--[[
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This is a password that encrypts our puzzle and cookies unique to your sites and servers you should change this from the default.
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]]
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local secret = " enigma" --Signature secret key --CHANGE ME FROM DEFAULT!
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--[[
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Unique id to identify each individual user and machine trying to access your website IP address works well.
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ngx.var.http_cf_connecting_ip --If you proxy your traffic through cloudflare use this
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ngx.var.http_x_forwarded_for --If your traffic is proxied through another server / service.
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ngx.var.remote_addr --Users IP address
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ngx.var.binary_remote_addr --Users IP address in binary
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ngx.var.http_user_agent --use this to protect Tor servers from DDoS
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You can combine multiple if you like. You can do so like this.
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local remote_addr = ngx.var.remote_addr .. ngx.var.http_user_agent
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remote_addr = "tor" this will mean this script will be functioning for tor users only
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remote_addr = "auto" the script will automatically get the clients IP this is the default it is the smartest and most compatible method with every service proxy etc
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]]
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local remote_addr = "auto" --Default Automatically get the Clients IP address
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--[[
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How long when a users request is authenticated will they be allowed to browse and access the site until they will see the auth page again.
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The time is expressed in seconds.
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None : 0 (This would result in every page and request showing the auth before granting access) --DO NOT SET AS 0 I recommend nothing less than 30 seconds.
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One minute: 60
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One hour: 3600
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One day: 86400
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One week: 604800
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One month: 2628000
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One year: 31536000
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Ten years: 315360000
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]]
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local expire_time = 86400 --One day
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--[[
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The type of javascript based pingback authentication method to use if it should be GET or POST or can switch between both making it as dynamic as possible.
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1 = GET
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2 = POST
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3 = DYNAMIC
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]]
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local javascript_REQUEST_TYPE = 2 --Default 2
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--[[
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Timer to refresh auth page
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Time is in seconds only.
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]]
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local refresh_auth = 5
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--[[
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Javascript variable checks
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These custom javascript checks are to prevent our authentication javascript puzzle / question being solved by the browser if the browser is a fake ghost browser / bot etc.
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Only if the web browser does not trigger any of these or does not match conditions defined will the browser solve the authentication request.
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]]
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local JavascriptVars_opening = [[
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if(!window._phantom || !window.callPhantom){/*phantomjs*/
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if(!window.__phantomas){/*phantomas PhantomJS-based web perf metrics + monitoring tool*/
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if(!window.Buffer){/*nodejs*/
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if(!window.emit){/*couchjs*/
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if(!window.spawn){/*rhino*/
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if(!window.webdriver){/*selenium*/
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if(!window.domAutomation || !window.domAutomationController){/*chromium based automation driver*/
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if(!window.document.documentElement.getAttribute("webdriver")){
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/*if(navigator.userAgent){*/
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if(!/bot|curl|kodi|xbmc|wget|urllib|python|winhttp|httrack|alexa|ia_archiver|facebook|twitter|linkedin|pingdom/i.test(navigator.userAgent)){
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/*if(navigator.cookieEnabled){*/
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/*if(document.cookie.match(/^(?:.*;)?\s*[0-9a-f]{32}\s*=\s*([^;]+)(?:.*)?$/)){*//*HttpOnly Cookie flags prevent this*/
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]]
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--[[
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Javascript variable blacklist
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]]
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local JavascriptVars_closing = [[
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/*}*/
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/*}*/
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}
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/*}*/
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}
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}
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}
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}
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}
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}
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}
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}
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]]
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--[[
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Javascript Puzzle for web browser to solve do not touch this unless you understand Javascript, HTML and Lua
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]]
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--Simple static Javascript puzzle where every request all year round the question and answer would be the same pretty predictable for bots.
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--local JavascriptPuzzleVars = [[22 + 22]] --44
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--local JavascriptPuzzleVars_answer = "44" --if this does not equal the equation above you will find access to your site will be blocked make sure you can do maths!?
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--Make our Javascript puzzle a little bit more dynamic than the static equation above it will change every 24 hours :) I made this because the static one is pretty poor security compared to this but this can be improved allot though.
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--TODO: IMPROVE THIS!
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local JavascriptPuzzleVars = [[parseInt("]] .. os.date("%Y%m%d",os.time()-24*60*60) .. [[", 10) + parseInt("]] .. os.date("%d%m%Y",os.time()-24*60*60) ..[[", 10)]] --Javascript output of our two random numbers
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local JavascriptPuzzleVars_answer = os.date("%Y%m%d",os.time()-24*60*60) + os.date("%d%m%Y",os.time()-24*60*60) --lua output of our two random numbers
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local JavascriptPuzzleVars_answer = math.floor(JavascriptPuzzleVars_answer+0.5) --fix bug removing the 0. decimal on the end of the figure
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local JavascriptPuzzleVars_answer = tostring(JavascriptPuzzleVars_answer) --convert the numeric output to a string
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--[[
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X-Auth-Header to be static or Dynamic setting this as dynamic is the best form of security
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1 = Static
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2 = Dynamic
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]]
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local x_auth_header = 2 --Default 2
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local x_auth_header_name = "x-auth-answer" --the header our server will expect the client to send us with the javascript answer this will change if you set the config as dynamic
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--[[
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Cookie Anti-DDos names
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]]
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local challenge = "__uip" --this is the first main unique identification of our cookie name
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local cookie_name_start_date = challenge.."_start_date" --our cookie start date name of our firewall
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local cookie_name_end_date = challenge.."_end_date" --our cookie end date name of our firewall
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local cookie_name_encrypted_start_and_end_date = challenge.."_combination" --our cookie challenge unique id name
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--[[
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Anti-DDoS Cookies to be Encrypted for better security
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1 = Cookie names will be plain text above
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2 = Encrypted cookie names unique to each individual client/user
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]]
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local encrypt_anti_ddos_cookies = 2 --Default 2
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--[[
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Encrypt/Obfuscate Javascript output to prevent content scrappers and bots decrypting it to try and bypass the browser auth checks. Wouldn't want to make life to easy for them now would I.
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0 = Random Encryption Best form of security and default
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1 = No encryption / Obfuscation
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2 = Base64 Data URI only
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3 = Hex encryption
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4 = Base64 Javascript Encryption
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5 = --Conor Mcknight's Javascript Scrambler (Obfuscate Javascript by putting it into vars and shuffling them like a deck of cards)
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]]
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local encrypt_javascript_output = 0
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--[[
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IP Address Whitelist
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Any IP Addresses specified here will be whitelisted to grant direct access to your site bypassing our firewall checks
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you can specify IP's like search engine crawler ip addresses here most search engines are smart enough they do not need to be specified,
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Major search engines can execute javascript such as Google, Yandex, Bing, Baidu and such so they can solve the auth page puzzle and index your site same as how companies like Cloudflare, Succuri, BitMitigate etc work and your site is still indexed.
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Supports IPv4 and IPv6 addresses aswell as subnet ranges
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To find all IP ranges of an ASN use : https://www.enjen.net/asn-blocklist/index.php?asn=16509&type=iplist
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]]
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local ip_whitelist_remote_addr = "auto" --Automatically get the Clients IP address
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local ip_whitelist = {
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--"127.0.0.1", --localhost
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--"192.168.0.1", --localhost
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}
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--[[
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IP Address Blacklist
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To block access to any abusive IP's that you do not want to ever access your website
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Supports IPv4 and IPv6 addresses aswell as subnet ranges
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To find all IP ranges of an ASN use : https://www.enjen.net/asn-blocklist/index.php?asn=16276&type=iplist
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For the worst Botnet ASN IP's see here : https://www.spamhaus.org/statistics/botnet-asn/ You can add their IP addresses. https://www.abuseat.org/public/asninfections.html
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]]
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local ip_blacklist_remote_addr = "auto" --Automatically get the Clients IP address
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local ip_blacklist = {
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--"127.0.0.1", --localhost
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--"192.168.0.1", --localhost
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--ASN AS16276 OVH IP ranges Block all OVH Servers
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"107.189.64.0/18","91.90.92.0/24","198.245.48.0/20","185.243.16.0/24","217.182.0.0/16","51.79.128.0/17","103.5.12.0/22","198.27.64.0/18","46.105.200.0/24","51.79.0.0/17","2607:5300::/32","144.217.0.0/16","46.244.32.0/20","46.105.201.0/24","46.105.198.0/24","54.39.0.0/16","46.105.203.0/24","51.81.128.0/17","46.105.0.0/16","51.178.0.0/16","167.114.128.0/18","91.90.88.0/24","8.7.244.0/24","139.99.128.0/17","144.2.32.0/19","51.38.0.0/16","91.90.94.0/24","8.33.128.0/21","8.21.41.0/24","216.32.194.0/24","51.89.0.0/16","5.196.0.0/16","195.110.30.0/23","51.195.0.0/16","2001:41d0::/32","91.90.93.0/24","8.29.224.0/24","167.114.192.0/19","8.24.8.0/21","91.90.90.0/24","167.114.0.0/17","91.121.0.0/16","51.91.0.0/16","139.99.0.0/17","178.32.0.0/15","8.26.94.0/24","51.77.0.0/16","91.90.89.0/24","185.228.97.0/24","151.80.0.0/16","213.251.128.0/18","149.56.0.0/16","37.59.0.0/16","213.186.32.0/19","2402:1f00::/32","193.70.0.0/17","142.44.128.0/17","51.161.0.0/17","54.38.0.0/16","185.228.98.0/24","91.90.88.0/21","216.32.220.0/24","92.222.0.0/16","147.135.128.0/17","142.4.192.0/19","5.135.0.0/16","192.95.0.0/18","46.105.202.0/24","185.12.32.0/23","145.239.0.0/16","213.32.0.0/17","37.187.0.0/16","37.60.48.0/21","198.100.144.0/20","149.202.0.0/16","94.23.0.0/16","167.114.224.0/19","193.109.63.0/24","51.254.0.0/15","91.90.91.0/24","216.32.213.0/24","216.32.218.0/24","8.33.96.0/21","5.39.0.0/17","185.228.96.0/24","164.132.0.0/16","158.69.0.0/16","46.105.199.0/24","8.30.208.0/21","54.37.0.0/16","46.105.204.0/24","2402:1f00:8100::/40","87.98.128.0/17","51.68.0.0/16","37.60.56.0/21","8.20.110.0/24","51.83.0.0/16","185.45.160.0/22","216.32.192.0/24","198.50.128.0/17","205.218.49.0/24","216.32.216.0/24","51.75.0.0/16","195.246.232.0/23","91.90.95.0/24","51.81.0.0/17","2402:1f00:8000::/40","23.92.224.0/19","192.240.152.0/21","91.134.0.0/16","92.246.224.0/19","176.31.0.0/16","79.137.0.0/17","193.104.19.0/24","137.74.0.0/16","192.99.0.0/16","198.27.92.0/24","147.135.0.0/17","8.33.136.0/24","2604:2dc0::/32","8.33.137.0/24","188.165.0.0/16","66.70.128.0/17","8.18.172.0/24","185.228.99.0/24","54.36.0.0/16","8.18.128.0/24",
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--ASN AS12876 ONLINE S.A.S. IP ranges
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"62.4.0.0/19","151.115.0.0/18","51.15.0.0/17","163.172.208.0/20","212.129.0.0/18","2001:bc8::/32","212.83.160.0/19","212.47.224.0/19","2001:bc8:1c00::/38","51.158.128.0/17","163.172.0.0/16","212.83.128.0/19","51.158.0.0/15","195.154.0.0/16","51.15.0.0/16","62.210.0.0/16",
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}
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--[[
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Allow or block all Tor users
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1 = Allow
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2 = block
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]]
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local tor = 1 --Allow Tor Users
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--[[
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Unique ID to identify each individual Tor user who connects to the website
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Using their User-Agent as a static variable to latch onto works well.
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ngx.var.http_user_agent --Default
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]]
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local tor_remote_addr = ngx.var.http_user_agent
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--[[
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X-Tor-Header to be static or Dynamic setting this as dynamic is the best form of security
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1 = Static
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2 = Dynamic
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]]
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local x_tor_header = 2 --Default 2
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local x_tor_header_name = "x-tor" --tor header name
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local x_tor_header_name_allowed = "true" --tor header value when we want to allow access
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local x_tor_header_name_blocked = "blocked" --tor header value when we want to block access
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--[[
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Tor Cookie values
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]]
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local cookie_tor = challenge.."_tor" --our tor cookie
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local cookie_tor_value_allow = "allow" --the value of the cookie when we allow access
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local cookie_tor_value_block = "deny" --the value of the cookie when we block access
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--[[
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TODO:
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Google ReCaptcha
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]]
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--[[
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Charset output of HTML page and scripts
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]]
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local default_charset = "utf-8"
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--[[
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Enable/disable script this feature allows you to turn on or off this script so you can leave this file in your nginx configuration permamently.
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This way you don't have to remove access_by_lua_file anti_ddos_challenge.lua; to stop protecting your websites :) you can set up your nginx config and use this feature to enable or disable protection
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1 = enabled
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2 = disabled
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3 = custom
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]]
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local master_switch = 1 --enabled by default
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--[[
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This feature is if you set "master_switch = 3" what this does is if you host multiple websites / services of one server / machine you can have this script disabled for all those websites / domain names other than those you specifiy.
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For example you set master_switch to 3 and specifiy ".onion" then all Tor websites you host on your server will be protected by this script while the rest of the websites you host will not be authenticated. (pretty clever huh)
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You can also specify full domain names like "github.com" to protect specific domains you can add as many as you like.
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]]
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local master_switch_custom_hosts = {
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".onion", --authenticate Tor websites
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"github.com", --authenticate github
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--"localhost", --authenticate localhost
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--"127.0.0.1", --authenticate localhost
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--".com", --authenticate .com domains
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}
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--[[
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Enable/disable credits It would be nice if you would show these to help the community grow and make the internet safer for everyone
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but if not I completely understand hence why I made it a option to remove them for you.
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1 = enabled
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2 = disabled
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]]
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local credits = 1 --enabled by default
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--[[
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Javascript variables generated by the script to be static in length or Dynamic setting this as dynamic is the best form of security
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1 = Static
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2 = Dynamic
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]]
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local dynamic_javascript_vars_length = 2 --dynamic default
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local dynamic_javascript_vars_length_static = 10 --how many chars in length should static be
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local dynamic_javascript_vars_length_start = 1 --for dynamic randomize min value to max this is min value
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local dynamic_javascript_vars_length_end = 10 --for dynamic randomize min value to max this is max value
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--[[
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User-Agent Blacklist
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If you want to block access to bad bots / specific user-agents you can use this.
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1 case insensative
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2 case sensative
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3 regex case sensative
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4 regex lower case insensative
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I added some examples of bad bots to block access to.
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]]
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local user_agent_blacklist_var = ngx.var.http_user_agent
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local user_agent_blacklist_table = {
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{
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"^$",
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3,
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}, --blocks blank / empty user-agents
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{
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"Kodi",
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1,
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},
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{
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"XBMC",
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1,
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},
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{
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"curl",
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1,
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},
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{
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"winhttp",
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1,
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},
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{
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"HTTrack",
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1,
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},
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{
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"libwww-perl",
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1,
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},
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{
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"python",
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1,
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},
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}
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--[[
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User-Agent Whitelist
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If you want to allow access to specific user-agents use this.
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1 case insensative
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2 case sensative
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3 regex case sensative
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4 regex lower case insensative
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I added some examples of user-agents you could whitelist mostly search engine crawlers.
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]]
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local user_agent_whitelist_var = ngx.var.http_user_agent
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local user_agent_whitelist_table = {
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--[[
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{
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"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
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2,
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},
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{
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"Mozilla/5.0 (compatible; Bingbot/2.0; +http://www.bing.com/bingbot.htm)",
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2,
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},
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{
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"Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)",
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2,
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},
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{
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"DuckDuckBot/1.0; (+http://duckduckgo.com/duckduckbot.html)",
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2,
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},
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{
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"Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)",
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2,
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},
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{
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"Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)",
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2,
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}
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{
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"facebot",
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2,
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|
}
|
|
{
|
|
"facebookexternalhit/1.0 (+http://www.facebook.com/externalhit_uatext.php)",
|
|
2,
|
|
}
|
|
{
|
|
"facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)",
|
|
2,
|
|
}
|
|
{
|
|
"ia_archiver (+http://www.alexa.com/site/help/webmasters; crawler@alexa.com)",
|
|
2,
|
|
}
|
|
]]
|
|
}
|
|
|
|
|
|
--[[
|
|
End Configuration
|
|
|
|
|
|
Users with little understanding don't edit beyond this point you will break the script most likely. (You should not need to be warned but now you have been told.) Proceed at own Risk!
|
|
|
|
Please do not touch anything below here unless you understand the code you read and know the consiquences.
|
|
|
|
This is where things get very complex. ;)
|
|
|
|
]]
|
|
|
|
|
|
--[[
|
|
Begin Required Functions
|
|
]]
|
|
|
|
--master switch check
|
|
local function check_master_switch()
|
|
if master_switch == 2 then --script disabled
|
|
local output = ngx.exit(ngx.OK) --Go to content
|
|
return output
|
|
end
|
|
if master_switch == 3 then --custom host selection
|
|
local allow_site = 1 --allow sites by default
|
|
for k,v in ipairs(master_switch_custom_hosts) do --for each host in our table
|
|
if string.match(string.lower(ngx.var.host), v) then --if our host matches one in the table
|
|
allow_site = 2 --disallow direct access
|
|
break --break out of the for each loop pointless to keep searching the rest since we matched our host
|
|
end
|
|
end
|
|
if allow_site == 1 then --checks passed site allowed grant direct access
|
|
local output = ngx.exit(ngx.OK) --Go to content
|
|
return output
|
|
else --allow_site was 2 to disallow direct access we matched a host to protect
|
|
return --carry on script functions to display auth page
|
|
end
|
|
end
|
|
end
|
|
check_master_switch()
|
|
|
|
--automatically figure out the IP address of the connecting Client
|
|
if remote_addr == "auto" then
|
|
if ngx.var.http_cf_connecting_ip ~= nil then
|
|
remote_addr = ngx.var.http_cf_connecting_ip
|
|
elseif ngx.var.http_x_forwarded_for ~= nil then
|
|
remote_addr = ngx.var.http_x_forwarded_for
|
|
else
|
|
remote_addr = ngx.var.remote_addr
|
|
end
|
|
end
|
|
if ip_whitelist_remote_addr == "auto" then
|
|
if ngx.var.http_cf_connecting_ip ~= nil then
|
|
ip_whitelist_remote_addr = ngx.var.http_cf_connecting_ip
|
|
elseif ngx.var.http_x_forwarded_for ~= nil then
|
|
ip_whitelist_remote_addr = ngx.var.http_x_forwarded_for
|
|
else
|
|
ip_whitelist_remote_addr = ngx.var.remote_addr
|
|
end
|
|
end
|
|
if ip_blacklist_remote_addr == "auto" then
|
|
if ngx.var.http_cf_connecting_ip ~= nil then
|
|
ip_blacklist_remote_addr = ngx.var.http_cf_connecting_ip
|
|
elseif ngx.var.http_x_forwarded_for ~= nil then
|
|
ip_blacklist_remote_addr = ngx.var.http_x_forwarded_for
|
|
else
|
|
ip_blacklist_remote_addr = ngx.var.remote_addr
|
|
end
|
|
end
|
|
--if host of site is a tor website connecting clients will be tor network clients
|
|
if string.match(string.lower(ngx.var.host), ".onion") then
|
|
remote_addr = "tor"
|
|
end
|
|
if remote_addr == "tor" then
|
|
remote_addr = tor_remote_addr
|
|
end
|
|
|
|
--[[
|
|
Start IP range function
|
|
]]
|
|
local function ip_address_in_range(input_ip, client_connecting_ip)
|
|
|
|
if string.match(input_ip, "/") then --input ip is a subnet
|
|
--do nothing
|
|
else
|
|
return
|
|
end
|
|
|
|
local ip_type = nil
|
|
if string.match(input_ip, "%:") and string.match(client_connecting_ip, "%:") then --if both input and connecting ip are ipv6 addresses
|
|
--ipv6
|
|
ip_type = 1
|
|
elseif string.match(input_ip, "%.") and string.match(client_connecting_ip, "%.") then --if both input and connecting ip are ipv4 addresses
|
|
--ipv4
|
|
ip_type = 2
|
|
else
|
|
return
|
|
end
|
|
if ip_type == nil then
|
|
--input and connecting IP one is ipv4 and one is ipv6
|
|
return
|
|
end
|
|
|
|
if ip_type == 1 then --ipv6
|
|
|
|
local function explode(string, divide)
|
|
if divide == '' then return false end
|
|
local pos, arr = 0, {}
|
|
--for each divider found
|
|
for st, sp in function() return string.find(string, divide, pos, true) end do
|
|
table.insert(arr, string.sub(string, pos, st - 1 )) --attach chars left of current divider
|
|
pos = sp + 1 --jump past current divider
|
|
end
|
|
table.insert(arr, string.sub(string, pos)) -- Attach chars right of last divider
|
|
return arr
|
|
end
|
|
|
|
--[[
|
|
Input IP
|
|
]]
|
|
--validate actual ip
|
|
local a, b, ip, mask = input_ip:find('([%w:]+)/(%d+)')
|
|
|
|
--get ip bits
|
|
local ipbits = explode(ip, ':')
|
|
|
|
--now to build an expanded ip
|
|
local zeroblock
|
|
for k, v in pairs(ipbits) do
|
|
--length 0? we're at the :: bit
|
|
if v:len() == 0 then
|
|
zeroblock = k
|
|
|
|
--length not 0 but not 4, prepend 0's
|
|
elseif v:len() < 4 then
|
|
local padding = 4 - v:len()
|
|
for i = 1, padding do
|
|
ipbits[k] = 0 .. ipbits[k]
|
|
end
|
|
end
|
|
end
|
|
if zeroblock and #ipbits < 8 then
|
|
--remove zeroblock
|
|
ipbits[zeroblock] = '0000'
|
|
local padding = 8 - #ipbits
|
|
|
|
for i = 1, padding do
|
|
table.insert(ipbits, zeroblock, '0000')
|
|
end
|
|
end
|
|
--[[
|
|
End Input IP
|
|
]]
|
|
|
|
--[[
|
|
Client IP
|
|
]]
|
|
--validate actual ip
|
|
local a, b, clientip, mask_client = client_connecting_ip:find('([%w:]+)')
|
|
|
|
--get ip bits
|
|
local ipbits_client = explode(clientip, ':')
|
|
|
|
--now to build an expanded ip
|
|
local zeroblock_client
|
|
for k, v in pairs(ipbits_client) do
|
|
--length 0? we're at the :: bit
|
|
if v:len() == 0 then
|
|
zeroblock_client = k
|
|
|
|
--length not 0 but not 4, prepend 0's
|
|
elseif v:len() < 4 then
|
|
local padding = 4 - v:len()
|
|
for i = 1, padding do
|
|
ipbits_client[k] = 0 .. ipbits_client[k]
|
|
end
|
|
end
|
|
end
|
|
if zeroblock_client and #ipbits_client < 8 then
|
|
--remove zeroblock
|
|
ipbits_client[zeroblock_client] = '0000'
|
|
local padding = 8 - #ipbits_client
|
|
|
|
for i = 1, padding do
|
|
table.insert(ipbits_client, zeroblock_client, '0000')
|
|
end
|
|
end
|
|
--[[
|
|
End Client IP
|
|
]]
|
|
|
|
local expanded_ip_count = ipbits[1] .. ':' .. ipbits[2] .. ':' .. ipbits[3] .. ':' .. ipbits[4] .. ':' .. ipbits[5] .. ':' .. ipbits[6] .. ':' .. ipbits[7] .. ':' .. ipbits[8]
|
|
expanded_ip_count = string.gsub(expanded_ip_count, ":", "")
|
|
|
|
local client_connecting_ip_count = ipbits_client[1] .. ':' .. ipbits_client[2] .. ':' .. ipbits_client[3] .. ':' .. ipbits_client[4] .. ':' .. ipbits_client[5] .. ':' .. ipbits_client[6] .. ':' .. ipbits_client[7] .. ':' .. ipbits_client[8]
|
|
client_connecting_ip_count = string.gsub(client_connecting_ip_count, ":", "")
|
|
|
|
--generate wildcard from mask
|
|
local indent = mask / 4
|
|
|
|
expanded_ip_count = string.sub(expanded_ip_count, 0, indent)
|
|
client_connecting_ip_count = string.sub(client_connecting_ip_count, 0, indent)
|
|
|
|
local client_connecting_ip_expanded = client_connecting_ip_count:gsub('....','%1:'):gsub(':$','')
|
|
local expanded_ip = expanded_ip_count:gsub('....','%1:'):gsub(':$','')
|
|
|
|
local wildcardbits = {}
|
|
for i = 0, indent - 1 do
|
|
table.insert(wildcardbits, 'f')
|
|
end
|
|
for i = 0, 31 - indent do
|
|
table.insert(wildcardbits, '0')
|
|
end
|
|
--convert into 8 string array each w/ 4 chars
|
|
local count, index, wildcard = 1, 1, {}
|
|
for k, v in pairs(wildcardbits) do
|
|
if count > 4 then
|
|
count = 1
|
|
index = index + 1
|
|
end
|
|
if not wildcard[index] then wildcard[index] = '' end
|
|
wildcard[index] = wildcard[index] .. v
|
|
count = count + 1
|
|
end
|
|
|
|
--loop each letter in each ipbit group
|
|
local topip = {}
|
|
local bottomip = {}
|
|
for k, v in pairs(ipbits) do
|
|
local topbit = ''
|
|
local bottombit = ''
|
|
for i = 1, 4 do
|
|
local wild = wildcard[k]:sub(i, i)
|
|
local norm = v:sub(i, i)
|
|
if wild == 'f' then
|
|
topbit = topbit .. norm
|
|
bottombit = bottombit .. norm
|
|
else
|
|
topbit = topbit .. '0'
|
|
bottombit = bottombit .. 'f'
|
|
end
|
|
end
|
|
topip[k] = topbit
|
|
bottomip[k] = bottombit
|
|
end
|
|
|
|
--count ips in mask
|
|
local ipcount = math.pow(2, 128 - mask)
|
|
|
|
if expanded_ip == client_connecting_ip_expanded then
|
|
--print("ipv6 is in range")
|
|
return true
|
|
end
|
|
|
|
--output
|
|
--[[
|
|
print()
|
|
print('indent' .. indent)
|
|
print('client_ip numeric : ' .. client_connecting_ip_count )
|
|
print('input ip numeric : ' .. expanded_ip_count )
|
|
print('client_ip : ' .. client_connecting_ip_expanded )
|
|
print('input ip : ' .. expanded_ip )
|
|
print()
|
|
print( '###### INFO ######' )
|
|
print( 'IP in: ' .. ip )
|
|
print( '=> Expanded IP: ' .. ipbits[1] .. ':' .. ipbits[2] .. ':' .. ipbits[3] .. ':' .. ipbits[4] .. ':' .. ipbits[5] .. ':' .. ipbits[6] .. ':' .. ipbits[7] .. ':' .. ipbits[8] )
|
|
print( 'Mask in: /' .. mask )
|
|
print( '=> Mask Wildcard: ' .. wildcard[1] .. ':' .. wildcard[2] .. ':' .. wildcard[3] .. ':' .. wildcard[4] .. ':' .. wildcard[5] .. ':' .. wildcard[6] .. ':' .. wildcard[7] .. ':' .. wildcard[8] )
|
|
print( '\n###### BLOCK ######' )
|
|
print( '#IP\'s: ' .. ipcount )
|
|
print( 'Range Start: ' .. topip[1] .. ':' .. topip[2] .. ':' .. topip[3] .. ':' .. topip[4] .. ':' .. topip[5] .. ':' .. topip[6] .. ':' .. topip[7] .. ':' .. topip[8] )
|
|
print( 'Range End: ' .. bottomip[1] .. ':' .. bottomip[2] .. ':' .. bottomip[3] .. ':' .. bottomip[4] .. ':' .. bottomip[5] .. ':' .. bottomip[6] .. ':' .. bottomip[7] .. ':' .. bottomip[8] )
|
|
]]
|
|
|
|
end
|
|
|
|
if ip_type == 2 then --ipv4
|
|
|
|
local a, b, ip1, ip2, ip3, ip4, mask = input_ip:find('(%d+).(%d+).(%d+).(%d+)/(%d+)')
|
|
local ip = { tonumber( ip1 ), tonumber( ip2 ), tonumber( ip3 ), tonumber( ip4 ) }
|
|
local a, b, client_ip1, client_ip2, client_ip3, client_ip4 = client_connecting_ip:find('(%d+).(%d+).(%d+).(%d+)')
|
|
local client_ip = { tonumber( client_ip1 ), tonumber( client_ip2 ), tonumber( client_ip3 ), tonumber( client_ip4 ) }
|
|
|
|
--list masks => wildcard
|
|
local masks = {
|
|
[1] = { 127, 255, 255, 255 },
|
|
[2] = { 63, 255, 255, 255 },
|
|
[3] = { 31, 255, 255, 255 },
|
|
[4] = { 15, 255, 255, 255 },
|
|
[5] = { 7, 255, 255, 255 },
|
|
[6] = { 3, 255, 255, 255 },
|
|
[7] = { 1, 255, 255, 255 },
|
|
[8] = { 0, 255, 255, 255 },
|
|
[9] = { 0, 127, 255, 255 },
|
|
[10] = { 0, 63, 255, 255 },
|
|
[11] = { 0, 31, 255, 255 },
|
|
[12] = { 0, 15, 255, 255 },
|
|
[13] = { 0, 7, 255, 255 },
|
|
[14] = { 0, 3, 255, 255 },
|
|
[15] = { 0, 1, 255, 255 },
|
|
[16] = { 0, 0, 255, 255 },
|
|
[17] = { 0, 0, 127, 255 },
|
|
[18] = { 0, 0, 63, 255 },
|
|
[19] = { 0, 0, 31, 255 },
|
|
[20] = { 0, 0, 15, 255 },
|
|
[21] = { 0, 0, 7, 255 },
|
|
[22] = { 0, 0, 3, 255 },
|
|
[23] = { 0, 0, 1, 255 },
|
|
[24] = { 0, 0, 0, 255 },
|
|
[25] = { 0, 0, 0, 127 },
|
|
[26] = { 0, 0, 0, 63 },
|
|
[27] = { 0, 0, 0, 31 },
|
|
[28] = { 0, 0, 0, 15 },
|
|
[29] = { 0, 0, 0, 7 },
|
|
[30] = { 0, 0, 0, 3 },
|
|
[31] = { 0, 0, 0, 1 }
|
|
}
|
|
|
|
--get wildcard
|
|
local wildcard = masks[tonumber( mask )]
|
|
|
|
--number of ips in mask
|
|
local ipcount = math.pow(2, ( 32 - mask ))
|
|
|
|
--network IP (route/bottom IP)
|
|
local bottomip = {}
|
|
for k, v in pairs( ip ) do
|
|
--wildcard = 0?
|
|
if wildcard[k] == 0 then
|
|
bottomip[k] = v
|
|
elseif wildcard[k] == 255 then
|
|
bottomip[k] = 0
|
|
else
|
|
local mod = v % (wildcard[k] + 1)
|
|
bottomip[k] = v - mod
|
|
end
|
|
end
|
|
|
|
--use network ip + wildcard to get top ip
|
|
local topip = {}
|
|
for k, v in pairs(bottomip) do
|
|
topip[k] = v + wildcard[k]
|
|
end
|
|
|
|
--is input ip = network ip?
|
|
local isnetworkip = ( ip[1] == bottomip[1] and ip[2] == bottomip[2] and ip[3] == bottomip[3] and ip[4] == bottomip[4] )
|
|
local isbroadcastip = ( ip[1] == topip[1] and ip[2] == topip[2] and ip[3] == topip[3] and ip[4] == topip[4] )
|
|
|
|
local ip1 = tostring(ip1)
|
|
local ip2 = tostring(ip2)
|
|
local ip3 = tostring(ip3)
|
|
local ip4 = tostring(ip4)
|
|
local client_ip1 = tostring(client_ip1)
|
|
local client_ip2 = tostring(client_ip2)
|
|
local client_ip3 = tostring(client_ip3)
|
|
local client_ip4 = tostring(client_ip4)
|
|
local in_range_low_end1 = tostring(bottomip[1])
|
|
local in_range_low_end2 = tostring(bottomip[2])
|
|
local in_range_low_end3 = tostring(bottomip[3])
|
|
local in_range_low_end4 = tostring(bottomip[4])
|
|
local in_range_top_end1 = tostring(topip[1])
|
|
local in_range_top_end2 = tostring(topip[2])
|
|
local in_range_top_end3 = tostring(topip[3])
|
|
local in_range_top_end4 = tostring(topip[4])
|
|
|
|
if tonumber(mask) == 1 then --127, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 2 then --63, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 3 then --31, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 4 then --15, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 5 then --7, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 6 then --3, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 7 then --1, 255, 255, 255
|
|
if client_ip1 >= in_range_low_end1 --in range low end
|
|
and client_ip1 <= in_range_top_end1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 8 then --0, 255, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 9 then --0, 127, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 10 then --0, 63, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 11 then --0, 31, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 12 then --0, 15, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 13 then --0, 7, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 14 then --0, 3, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 15 then --0, 1, 255, 255
|
|
if ip1 == client_ip1
|
|
and client_ip2 >= in_range_low_end2 --in range low end
|
|
and client_ip2 <= in_range_top_end2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 16 then --0, 0, 255, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 17 then --0, 0, 127, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 18 then --0, 0, 63, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 19 then --0, 0, 31, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 20 then --0, 0, 15, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 21 then --0, 0, 7, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 22 then --0, 0, 3, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 23 then --0, 0, 1, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and client_ip3 >= in_range_low_end3 --in range low end
|
|
and client_ip3 <= in_range_top_end3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 24 then --0, 0, 0, 255
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 25 then --0, 0, 0, 127
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 26 then --0, 0, 0, 63
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 27 then --0, 0, 0, 31
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 28 then --0, 0, 0, 15
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 29 then --0, 0, 0, 7
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 30 then --0, 0, 0, 3
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
if tonumber(mask) == 31 then --0, 0, 0, 1
|
|
if ip1 == client_ip1
|
|
and ip2 == client_ip2
|
|
and ip3 == client_ip3
|
|
and client_ip4 >= in_range_low_end4 --in range low end
|
|
and client_ip4 <= in_range_top_end4 then --in range top end
|
|
return true
|
|
end
|
|
end
|
|
|
|
--output
|
|
--[[
|
|
print()
|
|
print( '###### INFO ######' )
|
|
print( 'IP in: ' .. ip[1] .. '.' .. ip[2] .. '.' .. ip[3] .. '.' .. ip[4] )
|
|
print( 'Mask in: /' .. mask )
|
|
print( '=> Mask Wildcard: ' .. wildcard[1] .. '.' .. wildcard[2] .. '.' .. wildcard[3] .. '.' .. wildcard[4] )
|
|
print( '=> in IP is network-ip: ' .. tostring( isnetworkip ) )
|
|
print( '=> in IP is broadcast-ip: ' .. tostring( isbroadcastip ) )
|
|
print( '\n###### BLOCK ######' )
|
|
print( '#IP\'s: ' .. ipcount )
|
|
print( 'Bottom/Network: ' .. bottomip[1] .. '.' .. bottomip[2] .. '.' .. bottomip[3] .. '.' .. bottomip[4] .. '/' .. mask )
|
|
print( 'Top/Broadcast: ' .. topip[1] .. '.' .. topip[2] .. '.' .. topip[3] .. '.' .. topip[4] )
|
|
print( 'Subnet Range: ' .. bottomip[1] .. '.' .. bottomip[2] .. '.' .. bottomip[3] .. '.' .. bottomip[4] .. ' - ' .. topip[1] .. '.' .. topip[2] .. '.' .. topip[3] .. '.' .. topip[4] )
|
|
print( 'Host Range: ' .. bottomip[1] .. '.' .. bottomip[2] .. '.' .. bottomip[3] .. '.' .. bottomip[4] + 1 .. ' - ' .. topip[1] .. '.' .. topip[2] .. '.' .. topip[3] .. '.' .. topip[4] - 1 )
|
|
]]
|
|
|
|
end
|
|
|
|
end
|
|
--[[
|
|
usage
|
|
if ip_address_in_range("255.255.0.0/17", ngx.var.remote_addr) == true then --ipv4
|
|
print("IPv4 in range")
|
|
end
|
|
if ip_address_in_range("2a02:0c68::/29", ngx.var.remote_addr) == true then --ipv6
|
|
print("IPv6 in range")
|
|
end
|
|
]]
|
|
--[[
|
|
End IP range function
|
|
]]
|
|
|
|
--function to check if ip address is whitelisted to bypass our auth
|
|
local function check_ip_whitelist(ip_table)
|
|
for key,value in pairs(ip_table) do
|
|
if value == ip_whitelist_remote_addr then --if our ip address matches with one in the whitelist
|
|
local output = ngx.exit(ngx.OK) --Go to content
|
|
return output
|
|
elseif ip_address_in_range(value, ip_whitelist_remote_addr) == true then
|
|
local output = ngx.exit(ngx.OK) --Go to content
|
|
return output
|
|
end
|
|
end
|
|
|
|
return --no ip was in the whitelist
|
|
end
|
|
check_ip_whitelist(ip_whitelist) --run whitelist check function
|
|
|
|
local function check_ip_blacklist(ip_table)
|
|
for key,value in pairs(ip_table) do
|
|
if value == ip_blacklist_remote_addr then
|
|
local output = ngx.exit(ngx.HTTP_FORBIDDEN) --deny user access
|
|
return output
|
|
elseif ip_address_in_range(value, ip_blacklist_remote_addr) == true then
|
|
local output = ngx.exit(ngx.HTTP_FORBIDDEN) --deny user access
|
|
return output
|
|
end
|
|
end
|
|
|
|
return --no ip was in blacklist
|
|
end
|
|
check_ip_blacklist(ip_blacklist) --run blacklist check function
|
|
|
|
local function check_user_agent_blacklist(user_agent_table)
|
|
for key,value in pairs(user_agent_table) do
|
|
if value[2] == 1 then --case insensative
|
|
user_agent_blacklist_var = string.lower(user_agent_blacklist_var)
|
|
value[1] = string.lower(value[1])
|
|
end
|
|
if value[2] == 2 then --case sensative
|
|
end
|
|
if value[2] == 3 then --regex case sensative
|
|
end
|
|
if value[2] == 4 then --regex lower case insensative
|
|
user_agent_blacklist_var = string.lower(user_agent_blacklist_var)
|
|
end
|
|
if string.match(user_agent_blacklist_var, value[1])then
|
|
local output = ngx.exit(ngx.HTTP_FORBIDDEN) --deny user access
|
|
return output
|
|
end
|
|
end
|
|
|
|
return --no user agent was in blacklist
|
|
end
|
|
check_user_agent_blacklist(user_agent_blacklist_table) --run user agent blacklist check function
|
|
|
|
local function check_user_agent_whitelist(user_agent_table)
|
|
for key,value in pairs(user_agent_table) do
|
|
if value[2] == 1 then --case insensative
|
|
user_agent_whitelist_var = string.lower(user_agent_whitelist_var)
|
|
value[1] = string.lower(value[1])
|
|
end
|
|
if value[2] == 2 then --case sensative
|
|
end
|
|
if value[2] == 3 then --regex case sensative
|
|
end
|
|
if value[2] == 4 then --regex lower case insensative
|
|
user_agent_whitelist_var = string.lower(user_agent_whitelist_var)
|
|
end
|
|
if string.match(user_agent_whitelist_var, value[1]) then
|
|
local output = ngx.exit(ngx.OK) --Go to content
|
|
return output
|
|
end
|
|
end
|
|
|
|
return --no user agent was in whitelist
|
|
end
|
|
check_user_agent_whitelist(user_agent_whitelist_table) --run user agent whitelist check function
|
|
|
|
--to have better randomization upon encryption
|
|
math.randomseed(os.time())
|
|
|
|
--function to encrypt strings with our secret key / password provided
|
|
local function calculate_signature(str)
|
|
return ngx.encode_base64(ngx.hmac_sha1(secret, str))
|
|
:gsub("[+/=]", {["+"] = "-", ["/"] = "_", ["="] = ""}) --Replace + with - and replace / with _ and remove =
|
|
end
|
|
--calculate_signature(str)
|
|
|
|
--generate random strings on the fly
|
|
--qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890
|
|
local charset = {}
|
|
for i = 48, 57 do table.insert(charset, string.char(i)) end --0-9 numeric
|
|
--for i = 65, 90 do table.insert(charset, string.char(i)) end --A-Z uppercase
|
|
--for i = 97, 122 do table.insert(charset, string.char(i)) end --a-z lowercase
|
|
table.insert(charset, string.char(95)) --insert number 95 underscore
|
|
local stringrandom_table = {} --create table to store our generated vars to avoid duplicates
|
|
local function stringrandom(length)
|
|
--math.randomseed(os.time())
|
|
if length > 0 then
|
|
local output = stringrandom(length - 1) .. charset[math.random(1, #charset)]
|
|
local duplicate_found = 0 --mark if we find a duplicate or not
|
|
for _, value in next, stringrandom_table do --for each value in our generated var table
|
|
if value == output then --if a value in our table matches our generated var
|
|
duplicate_found = 1 --mark as duplicate var
|
|
output = "_" .. output --append an underscore to the duplicate var
|
|
table.insert(stringrandom_table , output) --insert to the table
|
|
end
|
|
end
|
|
if duplicate_found == 0 then --if no duplicate found
|
|
table.insert(stringrandom_table , output) --insert the output to our table
|
|
end
|
|
return output
|
|
else
|
|
return ""
|
|
end
|
|
end
|
|
--stringrandom(10)
|
|
|
|
local stringrandom_length = "" --create our random length variable
|
|
if dynamic_javascript_vars_length == 1 then --if our javascript random var length is to be static
|
|
stringrandom_length = dynamic_javascript_vars_length_static --set our length as our static value
|
|
else --it is to be dynamic
|
|
stringrandom_length = math.random(dynamic_javascript_vars_length_start, dynamic_javascript_vars_length_end) --set our length to be our dynamic min and max value
|
|
end
|
|
|
|
--shuffle table function
|
|
function shuffle(tbl)
|
|
for i = #tbl, 2, -1 do
|
|
local j = math.random(i)
|
|
tbl[i], tbl[j] = tbl[j], tbl[i]
|
|
end
|
|
return tbl
|
|
end
|
|
|
|
--for my javascript Hex output
|
|
local function sep(str, patt, re)
|
|
local rstr = str:gsub(patt, "%1%" .. re)
|
|
|
|
return rstr:sub(1, #rstr - #re)
|
|
end
|
|
|
|
local function stringtohex(str)
|
|
return str:gsub('.', function (c)
|
|
return string.format('%02X', string.byte(c))
|
|
end)
|
|
end
|
|
|
|
--encrypt_javascript function
|
|
local function encrypt_javascript(string1, type, defer_async, num_encrypt, encrypt_type, methods) --Function to generate encrypted/obfuscated output
|
|
local output = "" --Empty var
|
|
|
|
if type == 0 then
|
|
type = math.random(4, 4) --Random encryption
|
|
end
|
|
|
|
if type == 1 or type == nil then --No encryption
|
|
if defer_async == "0" or defer_async == nil then --Browser default loading / execution order
|
|
output = "<script type=\"text/javascript\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. string1 .. "</script>"
|
|
end
|
|
if defer_async == "1" then --Defer
|
|
output = "<script type=\"text/javascript\" defer=\"defer\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. string1 .. "</script>"
|
|
end
|
|
if defer_async == "2" then --Async
|
|
output = "<script type=\"text/javascript\" async=\"async\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. string1 .. "</script>"
|
|
end
|
|
end
|
|
|
|
--https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
|
|
--pass other encrypted outputs through this too ?
|
|
if type == 2 then --Base64 Data URI
|
|
local base64_data_uri = string1
|
|
|
|
if tonumber(num_encrypt) ~= nil then --If number of times extra to rencrypt is set
|
|
for i=1, #num_encrypt do --for each number
|
|
string1 = ngx.encode_base64(base64_data_uri)
|
|
end
|
|
end
|
|
|
|
if defer_async == "0" or defer_async == nil then --Browser default loading / execution order
|
|
output = "<script type=\"text/javascript\" src=\"data:text/javascript;base64," .. ngx.encode_base64(string1) .. "\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\"></script>"
|
|
end
|
|
if defer_async == "1" then --Defer
|
|
output = "<script type=\"text/javascript\" src=\"data:text/javascript;base64," .. ngx.encode_base64(string1) .. "\" defer=\"defer\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\"></script>"
|
|
end
|
|
if defer_async == "2" then --Async
|
|
output = "<script type=\"text/javascript\" src=\"data:text/javascript;base64," .. ngx.encode_base64(string1) .. "\" async=\"async\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\"></script>"
|
|
end
|
|
end
|
|
|
|
if type == 3 then --Hex
|
|
local hex_output = stringtohex(string1) --ndk.set_var.set_encode_hex(string1) --Encode string in hex
|
|
local hexadecimal_x = "" --Create var
|
|
local encrypt_type_origin = encrypt_type --Store var passed to function in local var
|
|
|
|
if tonumber(encrypt_type) == nil or tonumber(encrypt_type) <= 0 then
|
|
encrypt_type = math.random(1, 2) --Random encryption
|
|
end
|
|
--I was inspired by http://www.hightools.net/javascript-encrypter.php so i built it myself
|
|
if tonumber(encrypt_type) == 1 then
|
|
hexadecimal_x = "%" .. sep(hex_output, "%x%x", "%") --hex output insert a char every 2 chars %x%x
|
|
end
|
|
if tonumber(encrypt_type) == 2 then
|
|
hexadecimal_x = "\\x" .. sep(hex_output, "%x%x", "\\x") --hex output insert a char every 2 chars %x%x
|
|
end
|
|
|
|
--TODO: Fix this.
|
|
--num_encrypt = "3" --test var
|
|
if tonumber(num_encrypt) ~= nil then --If number of times extra to rencrypt is set
|
|
for i=1, num_encrypt do --for each number
|
|
if tonumber(encrypt_type) ~= nil then
|
|
encrypt_type = math.random(1, 2) --Random encryption
|
|
if tonumber(encrypt_type) == 1 then
|
|
--hexadecimal_x = "%" .. sep(ndk.set_var.set_encode_hex("eval(decodeURIComponent('" .. hexadecimal_x .. "'))"), "%x%x", "%") --hex output insert a char every 2 chars %x%x
|
|
end
|
|
if tonumber(encrypt_type) == 2 then
|
|
--hexadecimal_x = "\\x" .. sep(ndk.set_var.set_encode_hex("eval(decodeURIComponent('" .. hexadecimal_x .. "'))"), "%x%x", "\\x") --hex output insert a char every 2 chars %x%x
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
if defer_async == "0" or defer_async == nil then --Browser default loading / execution order
|
|
--https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent
|
|
output = "<script type=\"text/javascript\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">eval(decodeURIComponent(escape('" .. hexadecimal_x .. "')));</script>"
|
|
end
|
|
if defer_async == "1" then --Defer
|
|
output = "<script type=\"text/javascript\" defer=\"defer\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">eval(decodeURIComponent(escape('" .. hexadecimal_x .. "')));</script>"
|
|
end
|
|
if defer_async == "2" then --Defer
|
|
output = "<script type=\"text/javascript\" async=\"async\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">eval(decodeURIComponent(escape('" .. hexadecimal_x .. "')));</script>"
|
|
end
|
|
end
|
|
|
|
if type == 4 then --Base64 javascript decode
|
|
local base64_javascript = "eval(decodeURIComponent(escape(window.atob('" .. ngx.encode_base64(string1) .. "'))))"
|
|
|
|
if tonumber(num_encrypt) ~= nil then --If number of times extra to rencrypt is set
|
|
for i=1, num_encrypt do --for each number
|
|
base64_javascript = "eval(decodeURIComponent(escape(window.atob('" .. ngx.encode_base64(base64_javascript) .. "'))))"
|
|
end
|
|
end
|
|
|
|
if defer_async == "0" or defer_async == nil then --Browser default loading / execution order
|
|
output = "<script type=\"text/javascript\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. base64_javascript .. "</script>"
|
|
end
|
|
if defer_async == "1" then --Defer
|
|
output = "<script type=\"text/javascript\" defer=\"defer\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. base64_javascript .. "</script>"
|
|
end
|
|
if defer_async == "2" then --Defer
|
|
output = "<script type=\"text/javascript\" async=\"async\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. base64_javascript .. "</script>"
|
|
end
|
|
end
|
|
|
|
if type == 5 then --Conor Mcknight's Javascript Scrambler (Obfuscate Javascript by putting it into vars and shuffling them like a deck of cards)
|
|
local base64_javascript = ngx.encode_base64(string1) --base64 encode our script
|
|
|
|
local l = #base64_javascript --count number of chars our variable has
|
|
local i = 0 --keep track of how many times we pass through
|
|
local r = math.random(1, l) --randomize where to split string
|
|
local chunks = {} --create our chunks table for string storage
|
|
local chunks_order = {} --create our chunks table for string storage that stores the value only
|
|
|
|
while i <= l do
|
|
local random_var = stringrandom(stringrandom_length) --create a random variable name to use
|
|
--table.insert(chunks_order, "decodeURIComponent(escape(window.atob(_" .. random_var .. ")))")
|
|
table.insert(chunks_order, "_" .. random_var .. "") --insert the value into our ordered table
|
|
table.insert(chunks, 'var _' .. random_var .. '="' .. base64_javascript:sub(i,i+r).. '";') --insert our value into our table we will scramble
|
|
|
|
i = i+r+1
|
|
end
|
|
|
|
shuffle(chunks) --scramble our table
|
|
|
|
output = table.concat(chunks, "") --put our scrambled table into string
|
|
output = output .. "eval(decodeURIComponent(escape(window.atob(" .. table.concat(chunks_order, " + " ) .. "))));" --put our scrambled table and ordered table into a string
|
|
|
|
if defer_async == "0" or defer_async == nil then --Browser default loading / execution order
|
|
output = "<script type=\"text/javascript\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. output .. "</script>"
|
|
end
|
|
if defer_async == "1" then --Defer
|
|
output = "<script type=\"text/javascript\" defer=\"defer\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. output .. "</script>"
|
|
end
|
|
if defer_async == "2" then --Defer
|
|
output = "<script type=\"text/javascript\" async=\"async\" charset=\"" .. default_charset .. "\" data-cfasync=\"false\">" .. output .. "</script>"
|
|
end
|
|
end
|
|
|
|
return output
|
|
end
|
|
--end encrypt_javascript function
|
|
|
|
local currenttime = ngx.time() --Current time on server
|
|
|
|
local currentdate = "" --make current date a empty var
|
|
|
|
--Make sure our current date is in align with expires_time variable so that the auth page only shows when the cookie expires
|
|
if expire_time <= 60 then --less than equal to one minute
|
|
currentdate = os.date("%M",os.time()-24*60*60) --Current minute
|
|
end
|
|
if expire_time > 60 then --greater than one minute
|
|
currentdate = os.date("%H",os.time()-24*60*60) --Current hour
|
|
end
|
|
if expire_time > 3600 then --greater than one hour
|
|
currentdate = os.date("%d",os.time()-24*60*60) --Current day of the year
|
|
end
|
|
if expire_time > 86400 then --greater than one day
|
|
currentdate = os.date("%W",os.time()-24*60*60) --Current week
|
|
end
|
|
if expire_time > 6048000 then --greater than one week
|
|
currentdate = os.date("%m",os.time()-24*60*60) --Current month
|
|
end
|
|
if expire_time > 2628000 then --greater than one month
|
|
currentdate = os.date("%Y",os.time()-24*60*60) --Current year
|
|
end
|
|
if expire_time > 31536000 then --greater than one year
|
|
currentdate = os.date("%z",os.time()-24*60*60) --Current time zone
|
|
end
|
|
|
|
local scheme = ngx.var.scheme --scheme is HTTP or HTTPS
|
|
local host = ngx.var.host --host is website domain name
|
|
local request_uri = ngx.var.request_uri --request uri is full URL link including query strings and arguements
|
|
local URL = scheme .. "://" .. host .. request_uri
|
|
local user_agent = ngx.var.http_user_agent --user agent of browser
|
|
|
|
local expected_header_status = 200
|
|
local authentication_page_status_output = 503
|
|
|
|
--Put our vars into storage for use later on
|
|
local challenge_original = challenge
|
|
local cookie_name_start_date_original = cookie_name_start_date
|
|
local cookie_name_end_date_original = cookie_name_end_date
|
|
local cookie_name_encrypted_start_and_end_date_original = cookie_name_encrypted_start_and_end_date
|
|
|
|
--[[
|
|
Start Tor detection
|
|
]]
|
|
if x_tor_header == 2 then --if x-tor-header is dynamic
|
|
x_tor_header_name = calculate_signature(tor_remote_addr .. x_tor_header_name .. currentdate):gsub("_","") --make the header unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots gsub because header bug with underscores so underscore needs to be removed
|
|
x_tor_header_name_allowed = calculate_signature(tor_remote_addr .. x_tor_header_name_allowed .. currentdate):gsub("_","") --make the header unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots gsub because header bug with underscores so underscore needs to be removed
|
|
x_tor_header_name_blocked = calculate_signature(tor_remote_addr .. x_tor_header_name_blocked .. currentdate):gsub("_","") --make the header unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots gsub because header bug with underscores so underscore needs to be removed
|
|
end
|
|
|
|
if encrypt_anti_ddos_cookies == 2 then --if Anti-DDoS Cookies are to be encrypted
|
|
cookie_tor = calculate_signature(tor_remote_addr .. cookie_tor .. currentdate) --encrypt our tor cookie name
|
|
cookie_tor_value_allow = calculate_signature(tor_remote_addr .. cookie_tor_value_allow .. currentdate) --encrypt our tor cookie value for allow
|
|
cookie_tor_value_block = calculate_signature(tor_remote_addr .. cookie_tor_value_block .. currentdate) --encrypt our tor cookie value for block
|
|
end
|
|
|
|
--block tor function to block traffic from tor users
|
|
local function blocktor()
|
|
local output = ngx.exit(ngx.HTTP_FORBIDDEN) --deny user access
|
|
return output
|
|
end
|
|
|
|
--check the connecting client to see if they have our required matching tor cookie name in their request
|
|
local tor_cookie_name = "cookie_" .. cookie_tor
|
|
local tor_cookie_value = ngx.var[tor_cookie_name] or ""
|
|
|
|
if tor_cookie_value == cookie_tor_value_allow then --if their cookie value matches the value we expect
|
|
if tor == 2 then --perform check if tor users should be allowed or blocked if tor users already browsing your site have been granted access and you change this setting you want them to be blocked now so this makes sure they are denied any further access before their cookie expires
|
|
blocktor()
|
|
end
|
|
remote_addr = tor_remote_addr --set the remote_addr as the tor_remote_addr value
|
|
end
|
|
|
|
if tor_cookie_value == cookie_tor_value_block then --if the provided cookie value matches our block cookie value
|
|
blocktor()
|
|
end
|
|
|
|
local cookie_tor_value = "" --create variable to store if tor should be allowed or disallowed
|
|
local x_tor_header_name_value = "" --create variable to store our expected header value
|
|
|
|
if tor == 1 then --if tor users should be allowed
|
|
cookie_tor_value = cookie_tor_value_allow --set our value as our expected allow value
|
|
x_tor_header_name_value = x_tor_header_name_allowed --set our value as our expected allow value
|
|
else --tor users should be blocked
|
|
cookie_tor_value = cookie_tor_value_block --set our value as our expected block value
|
|
x_tor_header_name_value = x_tor_header_name_blocked --set our value as our expected block value
|
|
end
|
|
--[[
|
|
End Tor detection
|
|
]]
|
|
|
|
local answer = calculate_signature(remote_addr) --create our encrypted unique identification for the user visiting the website.
|
|
|
|
if x_auth_header == 2 then --if x-auth-header is dynamic
|
|
x_auth_header_name = calculate_signature(remote_addr .. x_auth_header_name .. currentdate):gsub("_","") --make the header unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots gsub because header bug with underscores so underscore needs to be removed
|
|
end
|
|
|
|
if encrypt_anti_ddos_cookies == 2 then --if Anti-DDoS Cookies are to be encrypted
|
|
--make the cookies unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots
|
|
challenge = calculate_signature(remote_addr .. challenge .. currentdate)
|
|
cookie_name_start_date = calculate_signature(remote_addr .. cookie_name_start_date .. currentdate)
|
|
cookie_name_end_date = calculate_signature(remote_addr .. cookie_name_end_date .. currentdate)
|
|
cookie_name_encrypted_start_and_end_date = calculate_signature(remote_addr .. cookie_name_encrypted_start_and_end_date .. currentdate)
|
|
end
|
|
|
|
--[[
|
|
Grant access function to either grant or deny user access to our website
|
|
]]
|
|
local function grant_access()
|
|
--our uid cookie
|
|
local cookie_name = "cookie_" .. challenge
|
|
local cookie_value = ngx.var[cookie_name] or ""
|
|
--our start date cookie
|
|
local cookie_name_start_date_name = "cookie_" .. cookie_name_start_date
|
|
local cookie_name_start_date_value = ngx.var[cookie_name_start_date_name] or ""
|
|
local cookie_name_start_date_value_unix = tonumber(cookie_name_start_date_value)
|
|
--our end date cookie
|
|
local cookie_name_end_date_name = "cookie_" .. cookie_name_end_date
|
|
local cookie_name_end_date_value = ngx.var[cookie_name_end_date_name] or ""
|
|
--our start date and end date combined to a unique id
|
|
local cookie_name_encrypted_start_and_end_date_name = "cookie_" .. cookie_name_encrypted_start_and_end_date
|
|
local cookie_name_encrypted_start_and_end_date_value = ngx.var[cookie_name_encrypted_start_and_end_date_name] or ""
|
|
|
|
if cookie_value ~= answer then --if cookie value not equal to or matching our expected cookie they should be giving us
|
|
return --return to refresh the page so it tries again
|
|
end
|
|
|
|
--if x-auth-answer is correct to the user unique id time stamps etc meaning browser figured it out then set a new cookie that grants access without needed these checks
|
|
local req_headers = ngx.req.get_headers() --get all request headers
|
|
if req_headers["x-requested-with"] == "XMLHttpRequest" then --if request header matches request type of XMLHttpRequest
|
|
if req_headers[x_tor_header_name] == x_tor_header_name_value and req_headers[x_auth_header_name] == JavascriptPuzzleVars_answer then --if the header and value are what we expect then the client is legitimate
|
|
remote_addr = tor_remote_addr --set as our defined static tor variable to use
|
|
|
|
challenge = calculate_signature(remote_addr .. challenge_original .. currentdate) --create our encrypted unique identification for the user visiting the website again. (Stops a double page refresh loop)
|
|
answer = calculate_signature(remote_addr) --create our answer again under the new remote_addr (Stops a double page refresh loop)
|
|
cookie_name_start_date = calculate_signature(remote_addr .. cookie_name_start_date_original .. currentdate) --create our cookie_name_start_date again under the new remote_addr (Stops a double page refresh loop)
|
|
cookie_name_end_date = calculate_signature(remote_addr .. cookie_name_end_date_original .. currentdate) --create our cookie_name_end_date again under the new remote_addr (Stops a double page refresh loop)
|
|
cookie_name_encrypted_start_and_end_date = calculate_signature(remote_addr .. cookie_name_encrypted_start_and_end_date_original .. currentdate) --create our cookie_name_encrypted_start_and_end_date again under the new remote_addr (Stops a double page refresh loop)
|
|
|
|
set_cookie1 = challenge.."="..answer.."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --apply our uid cookie incase javascript setting this cookies time stamp correctly has issues
|
|
set_cookie2 = cookie_name_start_date.."="..currenttime.."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --start date cookie
|
|
set_cookie3 = cookie_name_end_date.."="..(currenttime+expire_time).."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --end date cookie
|
|
set_cookie4 = cookie_name_encrypted_start_and_end_date.."="..calculate_signature(remote_addr .. currenttime .. (currenttime+expire_time) ).."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --start and end date combined to unique id
|
|
set_cookie5 = cookie_tor.."="..cookie_tor_value.."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --create our tor cookie to identify the client as a tor user
|
|
|
|
set_cookies = {set_cookie1 , set_cookie2 , set_cookie3 , set_cookie4, set_cookie5}
|
|
ngx.header["Set-Cookie"] = set_cookies
|
|
ngx.header["X-Content-Type-Options"] = "nosniff"
|
|
ngx.header["X-Frame-Options"] = "SAMEORIGIN"
|
|
ngx.header["X-XSS-Protection"] = "1; mode=block"
|
|
ngx.header["Cache-Control"] = "public, max-age=0 no-store, no-cache, must-revalidate, post-check=0, pre-check=0"
|
|
ngx.header["Pragma"] = "no-cache"
|
|
ngx.header["Expires"] = "0"
|
|
ngx.header.content_type = "text/html; charset=" .. default_charset
|
|
ngx.status = expected_header_status
|
|
ngx.exit(ngx.HTTP_NO_CONTENT)
|
|
end
|
|
if req_headers[x_auth_header_name] == JavascriptPuzzleVars_answer then --if the answer header provided by the browser Javascript matches what our Javascript puzzle answer should be
|
|
set_cookie1 = challenge.."="..cookie_value.."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --apply our uid cookie incase javascript setting this cookies time stamp correctly has issues
|
|
set_cookie2 = cookie_name_start_date.."="..currenttime.."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --start date cookie
|
|
set_cookie3 = cookie_name_end_date.."="..(currenttime+expire_time).."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --end date cookie
|
|
set_cookie4 = cookie_name_encrypted_start_and_end_date.."="..calculate_signature(remote_addr .. currenttime .. (currenttime+expire_time) ).."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --start and end date combined to unique id
|
|
|
|
set_cookies = {set_cookie1 , set_cookie2 , set_cookie3 , set_cookie4}
|
|
ngx.header["Set-Cookie"] = set_cookies
|
|
ngx.header["X-Content-Type-Options"] = "nosniff"
|
|
ngx.header["X-Frame-Options"] = "SAMEORIGIN"
|
|
ngx.header["X-XSS-Protection"] = "1; mode=block"
|
|
ngx.header["Cache-Control"] = "public, max-age=0 no-store, no-cache, must-revalidate, post-check=0, pre-check=0"
|
|
ngx.header["Pragma"] = "no-cache"
|
|
ngx.header["Expires"] = "0"
|
|
ngx.header.content_type = "text/html; charset=" .. default_charset
|
|
ngx.status = expected_header_status
|
|
ngx.exit(ngx.HTTP_NO_CONTENT)
|
|
end
|
|
end
|
|
|
|
if cookie_name_start_date_value ~= nil and cookie_name_end_date_value ~= nil and cookie_name_encrypted_start_and_end_date_value ~= nil then --if all our cookies exist
|
|
local cookie_name_end_date_value_unix = tonumber(cookie_name_end_date_value) or nil --convert our cookie end date provided by the user into a unix time stamp
|
|
if cookie_name_end_date_value_unix == nil or cookie_name_end_date_value_unix == "" then --if our cookie end date date in unix does not exist
|
|
return --return to refresh the page so it tries again
|
|
end
|
|
if cookie_name_end_date_value_unix <= currenttime then --if our cookie end date is less than or equal to the current date meaning the users authentication time expired
|
|
return --return to refresh the page so it tries again
|
|
end
|
|
if cookie_name_encrypted_start_and_end_date_value ~= calculate_signature(remote_addr .. cookie_name_start_date_value_unix .. cookie_name_end_date_value_unix) then --if users authentication encrypted cookie not equal to or matching our expected cookie they should be giving us
|
|
return --return to refresh the page so it tries again
|
|
end
|
|
end
|
|
--else all checks passed bypass our firewall and show page content
|
|
|
|
local output = ngx.exit(ngx.OK) --Go to content
|
|
return output
|
|
end
|
|
--grant_access()
|
|
|
|
--[[
|
|
End Required Functions
|
|
]]
|
|
|
|
grant_access() --perform checks to see if user can access the site or if they will see our denial of service status below
|
|
|
|
--[[
|
|
Build HTML Template
|
|
]]
|
|
|
|
local title = host .. [[ | Anti-DDoS Flood Protection and Firewall]]
|
|
|
|
--[[
|
|
Javascript after setting cookie run xmlhttp GET request
|
|
if cookie did exist in GET request then respond with valid cookie to grant access
|
|
also
|
|
if GET request contains specific required headers provide a SETCOOKIE
|
|
then if GET request response had specific passed security check response header
|
|
run window.location.reload(); Javascript
|
|
]]
|
|
if javascript_REQUEST_TYPE == 3 then --Dynamic Random request
|
|
javascript_REQUEST_TYPE = math.random (1, 2) --Randomize between 1 and 2
|
|
end
|
|
if javascript_REQUEST_TYPE == 1 then --GET request
|
|
javascript_REQUEST_TYPE = "GET"
|
|
end
|
|
if javascript_REQUEST_TYPE == 2 then --POST request
|
|
javascript_REQUEST_TYPE = "POST"
|
|
end
|
|
|
|
local javascript_POST_headers = "" --Create empty var
|
|
local javascript_POST_data = "" --Create empty var
|
|
|
|
if javascript_REQUEST_TYPE == "POST" then
|
|
-- https://www.w3schools.com/xml/tryit.asp?filename=tryajax_post2
|
|
javascript_POST_headers = [[xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
|
|
]]
|
|
|
|
javascript_POST_data = [["name1=Henry&name2=Ford"]]
|
|
|
|
end
|
|
|
|
local JavascriptPuzzleVariable_name = "_" .. stringrandom(stringrandom_length)
|
|
|
|
--[[
|
|
Begin Tor Browser Checks
|
|
Because Tor blocks browser fingerprinting / tracking it actually makes it easy to detect by comparing screen window sizes if they do not match we know it is Tor
|
|
]]
|
|
local javascript_detect_tor = [[
|
|
var sw, sh, ww, wh, v;
|
|
sw = screen.width;
|
|
sh = screen.height;
|
|
ww = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth || 0;
|
|
wh = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight || 0;
|
|
if ((sw == ww) && (sh == wh)) {
|
|
v = true;
|
|
if (!(ww % 200) && (wh % 100)) {
|
|
v = true;
|
|
}
|
|
}
|
|
//v = true; //test var nulled out used for debugging purpose
|
|
if (v == true) {
|
|
xhttp.setRequestHeader(']] .. x_tor_header_name .. [[', ']] .. x_tor_header_name_value .. [[');
|
|
}
|
|
]]
|
|
--[[
|
|
End Tor Browser Checks
|
|
]]
|
|
|
|
local javascript_REQUEST_headers = [[
|
|
xhttp.setRequestHeader(']] .. x_auth_header_name .. [[', ]] .. JavascriptPuzzleVariable_name .. [[); //make the answer what ever the browser figures it out to be
|
|
xhttp.setRequestHeader('X-Requested-with', 'XMLHttpRequest');
|
|
xhttp.setRequestHeader('X-Requested-TimeStamp', '');
|
|
xhttp.setRequestHeader('X-Requested-TimeStamp-Expire', '');
|
|
xhttp.setRequestHeader('X-Requested-TimeStamp-Combination', '');
|
|
xhttp.setRequestHeader('X-Requested-Type', 'GET');
|
|
xhttp.setRequestHeader('X-Requested-Type-Combination', 'GET'); //Encrypted for todays date
|
|
xhttp.withCredentials = true;
|
|
]] .. javascript_detect_tor
|
|
|
|
local JavascriptPuzzleVariable = [[
|
|
var ]] .. JavascriptPuzzleVariable_name .. [[=]] .. JavascriptPuzzleVars ..[[;
|
|
]]
|
|
|
|
-- https://www.w3schools.com/xml/tryit.asp?filename=try_dom_xmlhttprequest
|
|
local javascript_anti_ddos = [[
|
|
(function(){
|
|
var a = function() {try{return !!window.addEventListener} catch(e) {return !1} },
|
|
b = function(b, c) {a() ? document.addEventListener("DOMContentLoaded", b, c) : document.attachEvent("onreadystatechange", b)};
|
|
b(function(){
|
|
var timeleft = ]] .. refresh_auth .. [[;
|
|
var downloadTimer = setInterval(function(){
|
|
timeleft--;
|
|
document.getElementById("countdowntimer").textContent = timeleft;
|
|
if(timeleft <= 0)
|
|
clearInterval(downloadTimer);
|
|
},1000);
|
|
setTimeout(function(){
|
|
var now = new Date();
|
|
var time = now.getTime();
|
|
time += 300 * 1000;
|
|
now.setTime(time);
|
|
document.cookie = ']] .. challenge .. [[=]] .. answer .. [[' + '; expires=' + ']] .. ngx.cookie_time(currenttime+expire_time) .. [[' + '; path=/';
|
|
//javascript puzzle for browser to figure out to get answer
|
|
]] .. JavascriptVars_opening .. [[
|
|
]] .. JavascriptPuzzleVariable .. [[
|
|
]] .. JavascriptVars_closing .. [[
|
|
//end javascript puzzle
|
|
var xhttp = new XMLHttpRequest();
|
|
xhttp.onreadystatechange = function() {
|
|
if (xhttp.readyState === 4) {
|
|
document.getElementById("status").innerHTML = "Refresh your page.";
|
|
location.reload(true);
|
|
}
|
|
};
|
|
xhttp.open("]] .. javascript_REQUEST_TYPE .. [[", "]] .. request_uri .. [[", true);
|
|
]] .. javascript_REQUEST_headers .. [[
|
|
]] .. javascript_POST_headers .. [[
|
|
xhttp.send(]] .. javascript_POST_data .. [[);
|
|
}, ]] .. refresh_auth+1 .. [[000); /*if correct data has been sent then the auth response will allow access*/
|
|
}, false);
|
|
})();
|
|
]]
|
|
|
|
--TODO: include Captcha like Google ReCaptcha
|
|
|
|
--[[
|
|
encrypt/obfuscate the javascript output
|
|
]]
|
|
if encrypt_javascript_output == 1 then --No encryption/Obfuscation of Javascript so show Javascript in plain text
|
|
javascript_anti_ddos = [[<script type="text/javascript" charset="]] .. default_charset .. [[" data-cfasync="false">
|
|
]] .. javascript_anti_ddos .. [[
|
|
</script>]]
|
|
else --some form of obfuscation has been specified so obfuscate the javascript output
|
|
javascript_anti_ddos = encrypt_javascript(javascript_anti_ddos, encrypt_javascript_output) --run my function to encrypt/obfuscate javascript output
|
|
end
|
|
|
|
|
|
--Adverts positions
|
|
local head_ad_slot = [[
|
|
<!-- Start: Ad code and script tags for header of page -->
|
|
<!-- End: Ad code and script tags for header of page -->
|
|
]]
|
|
local top_body_ad_slot = [[
|
|
<!-- Start: Ad code and script tags for top of page -->
|
|
<!-- End: Ad code and script tags for top of page -->
|
|
]]
|
|
local left_body_ad_slot = [[
|
|
<!-- Start: Ad code and script tags for left of page -->
|
|
<!-- End: Ad code and script tags for left of page -->
|
|
]]
|
|
local right_body_ad_slot = [[
|
|
<!-- Start: Ad code and script tags for right of page -->
|
|
<!-- End: Ad code and script tags for right of page -->
|
|
]]
|
|
local footer_body_ad_slot = [[
|
|
<!-- Start: Ad code and script tags for bottom of page -->
|
|
<!-- End: Ad code and script tags for bottom of page -->
|
|
]]
|
|
--End advert positions
|
|
|
|
local ddos_credits = [[
|
|
<div class="credits" style="text-align:center;font-size:100%;">
|
|
<a href="//facebook.com/C0nw0nk" target="_blank">DDoS protection by © Conor McKnight</a>
|
|
</div>
|
|
]]
|
|
|
|
if credits == 2 then
|
|
ddos_credits = "" --make empty string
|
|
end
|
|
|
|
--Fix remote_addr output as what ever IP address the Client is using
|
|
if ngx.var.http_cf_connecting_ip ~= nil then
|
|
remote_addr = ngx.var.http_cf_connecting_ip
|
|
elseif ngx.var.http_x_forwarded_for ~= nil then
|
|
remote_addr = ngx.var.http_x_forwarded_for
|
|
else
|
|
remote_addr = ngx.var.remote_addr
|
|
end
|
|
|
|
local request_details = [[
|
|
<br>
|
|
<div id="status" style="color:#bd2426;font-size:200%;">
|
|
<noscript>Please turn JavaScript on and reload the page.<br></noscript>
|
|
This process is automatic. Your browser will redirect to your requested content shortly.
|
|
<br>
|
|
Please allow up to <span id="countdowntimer">]] .. refresh_auth .. [[</span> seconds…
|
|
</div>
|
|
<br>
|
|
<br>
|
|
<h3 style="color:#bd2426;">Request Details :</h3>
|
|
IP address : ]] .. remote_addr .. [[
|
|
<br>
|
|
Request URL : ]] .. URL .. [[
|
|
<br>
|
|
User-Agent : ]] .. user_agent .. [[
|
|
<br>
|
|
]]
|
|
|
|
local style_sheet = [[
|
|
html, body {/*width: 100%; height: 100%;*/ margin: 0; padding: 0; overflow-wrap: break-word; word-wrap: break-word;}
|
|
body {background-color: #ffffff; font-family: Helvetica, Arial, sans-serif; font-size: 100%;}
|
|
h1 {font-size: 1.5em; color: #404040; text-align: center;}
|
|
p {font-size: 1em; color: #404040; text-align: center; margin: 10px 0 0 0;}
|
|
#spinner {margin: 0 auto 30px auto; display: block;}
|
|
.attribution {margin-top: 20px;}
|
|
@-webkit-keyframes bubbles { 33%: { -webkit-transform: translateY(10px); transform: translateY(10px); } 66% { -webkit-transform: translateY(-10px); transform: translateY(-10px); } 100% { -webkit-transform: translateY(0); transform: translateY(0); } }
|
|
@keyframes bubbles { 33%: { -webkit-transform: translateY(10px); transform: translateY(10px); } 66% { -webkit-transform: translateY(-10px); transform: translateY(-10px); } 100% { -webkit-transform: translateY(0); transform: translateY(0); } }
|
|
.bubbles { background-color: #404040; width:15px; height: 15px; margin:2px; border-radius:100%; -webkit-animation:bubbles 0.6s 0.07s infinite ease-in-out; animation:bubbles 0.6s 0.07s infinite ease-in-out; -webkit-animation-fill-mode:both; animation-fill-mode:both; display:inline-block; }
|
|
]]
|
|
|
|
local anti_ddos_html_output = [[
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="]] .. default_charset .. [[" />
|
|
<meta http-equiv="Content-Type" content="text/html; charset=]] .. default_charset .. [[" />
|
|
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
|
|
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
|
|
<meta name="robots" content="noindex, nofollow" />
|
|
<title>]] .. title .. [[</title>
|
|
<style type="text/css">
|
|
]] .. style_sheet .. [[
|
|
</style>
|
|
]] .. head_ad_slot .. [[
|
|
]] .. javascript_anti_ddos .. [[
|
|
</head>
|
|
<body style="background-color:#EEEEEE;color:#000000;font-family:Arial,Helvetica,sans-serif;font-size:100%;">
|
|
<div style="width:auto;margin:16px auto;border:1px solid #CCCCCC;background-color:#FFFFFF;border-radius:3px 3px 3px 3px;padding:10px;">
|
|
<div style="float:right;margin-top:10px;">
|
|
<br>
|
|
<h1>Checking your browser</h1>
|
|
</div>
|
|
<br>
|
|
<h1>]] .. title .. [[</h1>
|
|
<p>
|
|
<b>Please wait a moment while we verify your request</b>
|
|
<br>
|
|
<br>
|
|
<br>
|
|
]] .. top_body_ad_slot .. [[
|
|
<br>
|
|
<br>
|
|
<center>
|
|
<h2>Information :</h2>
|
|
]] .. request_details .. [[
|
|
</center>
|
|
]] .. footer_body_ad_slot .. [[
|
|
</div>
|
|
]] .. ddos_credits .. [[
|
|
</body>
|
|
</html>
|
|
]]
|
|
|
|
--All previous checks failed and no access_granted permited so display authentication check page.
|
|
--Output Anti-DDoS Authentication Page
|
|
if set_cookies == nil then
|
|
set_cookies = challenge.."="..answer.."; path=/; expires=" .. ngx.cookie_time(currenttime+expire_time) .. "; Max-Age=" .. expire_time .. ";" --apply our uid cookie in header here incase browsers javascript can't set cookies due to permissions.
|
|
end
|
|
ngx.header["Set-Cookie"] = set_cookies
|
|
ngx.header["X-Content-Type-Options"] = "nosniff"
|
|
ngx.header["X-Frame-Options"] = "SAMEORIGIN"
|
|
ngx.header["X-XSS-Protection"] = "1; mode=block"
|
|
ngx.header["Cache-Control"] = "public, max-age=0 no-store, no-cache, must-revalidate, post-check=0, pre-check=0"
|
|
ngx.header["Pragma"] = "no-cache"
|
|
ngx.header["Expires"] = "0"
|
|
if credits == 1 then
|
|
ngx.header["X-Anti-DDoS"] = "Conor McKnight | facebook.com/C0nw0nk"
|
|
end
|
|
ngx.header.content_type = "text/html; charset=" .. default_charset
|
|
ngx.status = authentication_page_status_output
|
|
ngx.say(anti_ddos_html_output)
|
|
ngx.exit(ngx.HTTP_OK)
|