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ngx_lua_waf_oneinstack
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lj2007331@gmail.com 2018-12-04 17:42:10 +08:00
parent 855064926c
commit d9198e1812
4 changed files with 76 additions and 49 deletions
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20
README.md
View File

@ -1,5 +1,5 @@
### ngx_lua_waf
ngx_lua_waf是一个基于lua-nginx-module的web应用防火墙
ngx_lua_waf是一个基于lua-nginx-module的web应用防火墙, 支持验证码验证
### OneinStack启用ngx_lua_waf
```
@ -26,6 +26,7 @@ export LUAJIT_INC=/usr/local/include/luajit-2.1
sed -i "s@^nginx_modules_options=.*@nginx_modules_options='--with-ld-opt=-Wl,-rpath,/usr/local/lib --add-module=../lua-nginx-module --add-module=../ngx_devel_kit'@" options.conf
./install.sh --nginx_option 1
### 全局nginx新增waf
cat > /usr/local/nginx/conf/waf.conf << EOF
lua_shared_dict limit 20m;
lua_package_path "/usr/local/nginx/conf/waf/?.lua;;";
@ -36,6 +37,23 @@ EOF
#vi /usr/local/nginx/conf/nginx.conf
#include vhost/*.conf;下一行新增，如下
include waf.conf;
### 单网站新增waf(推荐)
cat > /usr/local/nginx/conf/waf.conf << EOF
lua_shared_dict limit 20m;
lua_package_path "/usr/local/nginx/conf/waf/?.lua;;";
init_by_lua_file "/usr/local/nginx/conf/waf/init.lua";
EOF
#vi /usr/local/nginx/conf/vhost/www.example.com.conf
#location ~ [^/]\.php(/|$) {下一行新增，如下
access_by_lua_file "/usr/local/nginx/conf/waf/access.lua";
#注意：wordpress URL改成ngx.var.request_uri
66 local ATTACK_URL = ngx.var.host .. ngx.var.uri
67 -- local ATTACK_URL = ngx.var.host .. ngx.var.request_uri
#改成：
66 -- local ATTACK_URL = ngx.var.host .. ngx.var.uri
67 local ATTACK_URL = ngx.var.host .. ngx.var.request_uri
```
### Copyright

4
access.lua
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@ -1,6 +1,6 @@
require 'init'
require "init"
function waf_main()
local function waf_main()
if black_ip_check() then
elseif white_ip_check() then
elseif white_url_check() then

53
init.lua
View File

@ -1,6 +1,6 @@
-- WAF Action
require 'config'
require 'lib'
require "config"
require "lib"
-- args
local rulematch = ngx.re.find
@ -9,12 +9,12 @@ local unescape = ngx.unescape_uri
-- allow white ip
function white_ip_check()
if config_white_ip_check == "on" then
local IP_WHITE_RULE = get_rule('whiteip')
local IP_WHITE_RULE = get_rule("whiteip")
local WHITE_IP = get_client_ip()
if IP_WHITE_RULE ~= nil then
for _,rule in pairs(IP_WHITE_RULE) do
if rule ~= "" and rulematch(WHITE_IP,rule,"jo") then
--log_record('White_IP',ngx.var_request_uri,"_","_")
-- log_record("White_IP",ngx.var_request_uri,"_","_")
return true
end
end
@ -25,14 +25,15 @@ end
-- deny black ip
function black_ip_check()
if config_black_ip_check == "on" then
local IP_BLACK_RULE = get_rule('blackip')
local IP_BLACK_RULE = get_rule("blackip")
local BLACK_IP = get_client_ip()
if IP_BLACK_RULE ~= nil then
for _,rule in pairs(IP_BLACK_RULE) do
if rule ~= "" and rulematch(BLACK_IP,rule,"jo") then
log_record('BlackList_IP',ngx.var_request_uri,"_","_")
if config_waf_enable == "on" then
ngx.exit(403)
ngx.header.content_type = "text/html"
ngx.say('Your IP blacklist, Please contact the administrator! ')
return true
end
end
@ -44,7 +45,7 @@ end
-- allow white url
function white_url_check()
if config_white_url_check == "on" then
local URL_WHITE_RULES = get_rule('whiteurl')
local URL_WHITE_RULES = get_rule("whiteurl")
local REQ_URI = string.lower(ngx.var.request_uri)
if URL_WHITE_RULES ~= nil then
for _,rule in pairs(URL_WHITE_RULES) do
@ -60,19 +61,27 @@ end
function cc_attack_check()
if config_cc_check == "on" then
local USER_AGENT = get_user_agent()
--local ATTACK_URL = ngx.var.host .. ngx.var.request_uri
local ARGS = ngx.var.args or ""
local ATTACK_URL = ngx.var.host .. ngx.var.uri
-- local ATTACK_URL = ngx.var.host .. ngx.var.request_uri
-- local ATTACK_URL = ngx.var.host .. ngx.var.uri .. '?' .. ARGS
local CC_TOKEN = get_client_ip() .. "." .. ngx.md5(string.lower(ATTACK_URL) .. USER_AGENT)
local limit = ngx.shared.limit
local CCcount=tonumber(string.match(config_cc_rate,'(.*)/'))
local CCseconds=tonumber(string.match(config_cc_rate,'/(.*)'))
local req,_ = limit:get(CC_TOKEN)
if req then
--write('/data/wwwlogs/info.log',CC_TOKEN ..'\t'.. ATTACK_URL .. '\t'.. 'req: ' .. req .. "\n")
-- write("/data/wwwlogs/info.log",CC_TOKEN .."\t".. ATTACK_URL .. "\t".. "req: " .. req .."\n")
if req > CCcount then
log_record('CC_Attack',ngx.var.request_uri,"-","-")
log_record("CC_Attack",ATTACK_URL,"-","-")
if config_waf_enable == "on" then
ngx.exit(403)
local source = ngx.encode_base64(ngx.var.scheme.."://"..ngx.var.host..ngx.var.request_uri)
local dest = 'https://oneinstack.com/captcha.html' .. '?continue=' .. source
local CCcountcode,_ = math.modf(CCcount/2);
limit:set(CC_TOKEN,CCcountcode)
ngx.redirect(dest,302)
end
else
limit:incr(CC_TOKEN,1)
@ -87,12 +96,12 @@ end
-- deny cookie
function cookie_attack_check()
if config_cookie_check == "on" then
local COOKIE_RULES = get_rule('cookie')
local COOKIE_RULES = get_rule("cookie")
local USER_COOKIE = ngx.var.http_cookie
if USER_COOKIE ~= nil then
for _,rule in pairs(COOKIE_RULES) do
if rule ~="" and rulematch(USER_COOKIE,rule,"jo") then
log_record('Deny_Cookie',ngx.var.request_uri,"-",rule)
log_record("Deny_Cookie",ngx.var.request_uri,"-",rule)
if config_waf_enable == "on" then
waf_output()
return true
@ -107,11 +116,11 @@ end
-- deny url
function url_attack_check()
if config_url_check == "on" then
local URL_RULES = get_rule('blackurl')
local URL_RULES = get_rule("blackurl")
local REQ_URI = string.lower(ngx.var.request_uri)
for _,rule in pairs(URL_RULES) do
if rule ~="" and rulematch(REQ_URI,rule,"jo") then
log_record('Deny_URL',REQ_URI,"-",rule)
log_record("Deny_URL",REQ_URI,"-",rule)
if config_waf_enable == "on" then
waf_output()
return true
@ -129,13 +138,13 @@ function url_args_attack_check()
for _,rule in pairs(ARGS_RULES) do
local REQ_ARGS = ngx.req.get_uri_args()
for key, val in pairs(REQ_ARGS) do
if type(val) == 'table' then
ARGS_DATA = table.concat(val, " ")
if type(val) == "table" then
local ARGS_DATA = table.concat(val, " ")
else
ARGS_DATA = val
local ARGS_DATA = val
end
if ARGS_DATA and type(ARGS_DATA) ~= "boolean" and rule ~="" and rulematch(unescape(ARGS_DATA),rule,"jo") then
log_record('Deny_URL_Args',ngx.var.request_uri,"-",rule)
log_record("Deny_URL_Args",ngx.var.request_uri,"-",rule)
if config_waf_enable == "on" then
waf_output()
return true
@ -149,12 +158,12 @@ end
-- deny user agent
function user_agent_attack_check()
if config_user_agent_check == "on" then
local USER_AGENT_RULES = get_rule('useragent')
local USER_AGENT_RULES = get_rule("useragent")
local USER_AGENT = ngx.var.http_user_agent
if USER_AGENT ~= nil then
for _,rule in pairs(USER_AGENT_RULES) do
if rule ~="" and rulematch(USER_AGENT,rule,"jo") then
log_record('Deny_USER_AGENT',ngx.var.request_uri,"-",rule)
log_record("Deny_USER_AGENT",ngx.var.request_uri,"-",rule)
if config_waf_enable == "on" then
waf_output()
return true
@ -169,7 +178,7 @@ end
-- deny post
function post_attack_check()
if config_post_check == "on" then
local POST_RULES = get_rule('post')
local POST_RULES = get_rule("post")
for _,rule in pairs(ARGS_RULES) do
local POST_ARGS = ngx.req.get_post_args()
end

12
lib.lua
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@ -1,9 +1,9 @@
-- waf core lib
require 'config'
require "config"
-- Get the client IP
function get_client_ip()
CLIENT_IP = ngx.req.get_headers()["X_real_ip"]
local CLIENT_IP = ngx.req.get_headers()["X_real_ip"]
if CLIENT_IP == nil then
CLIENT_IP = ngx.req.get_headers()["X_Forwarded_For"]
end
@ -18,7 +18,7 @@ end
-- Get the client user agent
function get_user_agent()
USER_AGENT = ngx.var.http_user_agent
local USER_AGENT = ngx.var.http_user_agent
if USER_AGENT == nil then
USER_AGENT = "unknown"
end
@ -27,13 +27,13 @@ end
-- Get WAF rule
function get_rule(rulefilename)
local io = require 'io'
local io = require "io"
local RULE_PATH = config_rule_dir
local RULE_FILE = io.open(RULE_PATH..'/'..rulefilename,"r")
if RULE_FILE == nil then
return
end
RULE_TABLE = {}
local RULE_TABLE = {}
for line in RULE_FILE:lines() do
table.insert(RULE_TABLE,line)
end
@ -44,7 +44,7 @@ end
-- WAF log record for json,(use logstash codec => json)
function log_record(method,url,data,ruletag)
local cjson = require("cjson")
local io = require 'io'
local io = require "io"
local LOG_PATH = config_log_dir
local CLIENT_IP = get_client_ip()
local USER_AGENT = get_user_agent()