python webserver, based on SimpleHTTPServer

 #-*- coding:utf-8 -*-
 #author: lichmama
 #email: nextgodhand@163.com
 #filename: httpd.py
 import io
 import os
 import sys
 import urllib
 from BaseHTTPServer import HTTPServer
 from SimpleHTTPServer import SimpleHTTPRequestHandler

 class MyRequestHandler(SimpleHTTPRequestHandler):
     protocol_version = "HTTP/1.1"
     server_version = "PSHS/0.1"
     sys_version = "Python/2.7.x"
     target = "D:/web"

     def do_GET(self):
         if self.path == "/" or self.path == "/index":
             content = open("signin.html", "rb").read()
             self.send_head(content)
         else:
             path = self.translate_path(self.path)
             if os.path.exists(path):
                 extn = os.path.splitext(path)[1].lower()
                 content = open(path, "rb").read()
                 self.send_head(content, type=self.extensions_map[extn])
             else:
                 content = open("404.html", "rb").read()
                 self.send_head(content, code=404)
         self.send_content(content)

     def do_POST(self):
         if self.path == "/signin":
             data = self.rfile.read(int(self.headers["content-length"]))
             data = urllib.unquote(data)
             data = self.parse_data(data)
             try:
                 uid = data["uid"]
                 if uid != "":
                     content = open("success.html", "rb").read()
                     content = content.replace("$uid", uid)
                     self.send_head(content)
                     #do-something-in-backend
                     if not os.path.exists(self.target + "/" + uid):
                         os.mkdir(self.target + "/" + uid)
                 else:
                     content = "400, bad request."
                     self.send_head(content, code=400)
             except KeyError:
                 content = "400, bad request."
                 self.send_head(content, code=400)
         else:
             content="403, forbiden."
             self.send_head(content, code=403)
         self.send_content(content)

     def parse_data(self, data):
         ranges = {}
         for item in data.split("&"):
             k, v = item.split("=")
             ranges[k] = v
         return ranges

     def send_head(self, content, code=200, type="text/html"):
         self.send_response(code)
         self.send_header("Content-Type", type)
         self.send_header("Content-Length", str(len(content)))
         self.end_headers()

     def send_content(self, content):
         f = io.BytesIO()
         f.write(content)
         f.seek(0)
         self.copyfile(f, self.wfile)
         f.close()

 if __name__ == "__main__":
     if len(sys.argv) == 2:
         #set the target where to mkdir, and default "D:/web"
         MyRequestHandler.target = sys.argv[1]
     try:
         server = HTTPServer(("", 8080), MyRequestHandler)
         print "pythonic-simple-http-server started, serving at http://localhost:8080"
         server.serve_forever()
     except KeyboardInterrupt:
         server.socket.close()