From 3af41ccbfdfb634483423d768fdb0e48b4f65b9e Mon Sep 17 00:00:00 2001
From: loveshell <82163261@qq.com>
Date: Tue, 26 Mar 2013 17:59:06 +0800
Subject: [PATCH] Create init.lua

---
 init.lua | 108 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 init.lua

diff --git a/init.lua b/init.lua
new file mode 100644
index 0000000..d9d39dd
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,108 @@
+--syslog函数和本地日志记录函数
+local bit = require "bit"
+local ffi = require "ffi"
+local C = ffi.C
+local bor = bit.bor
+ffi.cdef[[
+int write(int fd, const char *buf, int nbyte);
+int open(const char *path, int access, int mode);
+int close(int fd);
+]]
+
+local O_RDWR   = 0X0002; 
+local O_CREAT  = 0x0040;
+local O_APPEND = 0x0400;
+local S_IRUSR = 0x0100;
+local S_IWUSR = 0x0080;
+function write(logfile,msg)
+            local logger_fd = C.open(logfile, bor(O_RDWR, O_CREAT, O_APPEND), bor(S_IRUSR,S_IWUSR));
+            local c = msg;
+            C.write(logger_fd, c, #c);
+            C.close(logger_fd)
+end
+function syslog(msg)
+    ngx.header.content_type = "text/html"
+    kern = 0
+    user = 1
+    mail = 2
+    daemon = 3
+    auth = 4
+    syslog = 5
+    lpr = 6
+    news = 7
+    uucp = 8
+    cron = 9
+    authpriv = 10
+    ftp = 11
+    local0 = 16
+    local1 = 17
+    local2 = 18
+    local3 = 19
+    local4 = 20
+    local5 = 21
+    local6 = 22
+    local7 = 23
+
+    emerg = 0
+    alert = 1
+    crit = 2
+    err = 3
+    warning = 4
+    notice = 5
+    info = 6
+    debug = 7
+
+
+local sock = ngx.socket.udp()
+local ok, err = sock:setpeername('127.0.0.1', 514)
+--上面的ip和端口就是syslog server的ip和端口地址，可自行修改
+if not ok then
+    ngx.say("failed to connect to syslog server: ", err)
+    return
+end
+level=info
+facility=daemon
+sign=level+facility*8
+ok, err = sock:send('<'..sign..'>'..msg)
+sock:close()
+end
+function log(method,url,data)
+    if data then
+      if ngx.var.http_user_agent  then
+  --		syslog(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \""..data.."\" \""..ngx.status.."\" \""..ngx.var.http_user_agent.."\"\n")
+			write(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \""..data.."\" \""..ngx.status.."\" \""..ngx.var.http_user_agent.."\"\n")
+      else
+	--		syslog(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \""..data.."\" \"-\"\n")
+			write(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \""..data.."\" \"-\"\n")
+      end
+    else
+        if ngx.var.http_user_agent  then
+          --  syslog(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \"-\" \""..ngx.var.http_user_agent.."\"\n")
+            write("/data/logs/hack/"..ngx.var.server_name.."_sec.log",ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \"-\" \""..ngx.var.http_user_agent.."\"\n")
+        else
+	--		syslog(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \"-\" \"".."-\"\n")
+			write(ngx.var.remote_addr.." ".." ["..ngx.localtime().."] \""..method.." "..url.."\" \"-\" \"".."-\"\n")
+        end
+    end
+--file:close()
+end
+--------------------------------------响应函数--------------------------------------------------------------------------------
+function check()
+    ngx.header.content_type = "text/html"
+    ngx.print("just a joke hehe~ !!")
+    ngx.exit(200)
+end
+------------------------------------规则读取函数-------------------------------------------------------------------
+function read_rule(var)
+    file = io.open("./wafconf/"..var,"r")
+    t = {}
+    for line in file:lines() do
+        table.insert(t,line)
+    end
+    return(table.concat(t,"|"))
+end
+regex=read_rule('global')
+get=read_rule('get')
+post=read_rule('post')
+agent=read_rule('user-agent')
+whitelist=read_rule('whitelist')