interface.py

   1 #!/usr/bin/python
   2 import string,cgi,time
   3 from os import curdir, sep
   4 from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
   5 import posixpath, urllib, os
   6
   7 import questions, statistic
   8
   9 class MyHandler(BaseHTTPRequestHandler):
  10    def do_GET(self):
  11       if self.path.endswith(".afu"):
  12          self.Good()
  13       else:
  14          f = self.send_head()
  15          if f:
  16             self.copyfile(f, self.wfile)
  17             f.close()
  18
  19    def do_HEAD(self):
  20      """Serve a HEAD request."""
  21      f = self.send_head()
  22      if f:
  23          f.close()
  24
  25    def send_head(self):
  26       """Common code for GET and HEAD commands.
  27
  28       This sends the response code and MIME headers.
  29
  30       Return value is either a file object (which has to be copied
  31       to the outputfile by the caller unless the command was HEAD,
  32       and must be closed by the caller under all circumstances), or
  33       None, in which case the caller has nothing further to do.
  34
  35       """
  36       path = self.translate_path(self.path)
  37       if os.path.isdir(path):
  38          self.send_error(403, "Directory listing not supported")
  39          return None
  40       try:
  41          f = open(path, 'rb')
  42       except IOError:
  43          self.send_error(404, "File not found")
  44          return None
  45       self.send_response(200)
  46       self.send_header("Content-type", self.guess_type(path))
  47       self.end_headers()
  48       return f
  49
  50    def translate_path(self, path):
  51       """Translate a /-separated PATH to the local filename syntax.
  52
  53       Components that mean special things to the local file system
  54       (e.g. drive or directory names) are ignored.  (XXX They should
  55       probably be diagnosed.)
  56
  57       """
  58       path = posixpath.normpath(urllib.unquote(path))
  59       words = string.splitfields(path, '/')
  60       words = filter(None, words)
  61       path = os.getcwd()
  62       for word in words:
  63          drive, word = os.path.splitdrive(word)
  64          head, word = os.path.split(word)
  65          if word in (os.curdir, os.pardir): continue
  66          path = os.path.join(path, word)
  67       return path
  68
  69    def copyfile(self, source, outputfile):
  70       """Copy all data between two file objects.
  71
  72       The SOURCE argument is a file object open for reading
  73       (or anything with a read() method) and the DESTINATION
  74       argument is a file object open for writing (or
  75       anything with a write() method).
  76
  77       The only reason for overriding this would be to change
  78       the block size or perhaps to replace newlines by CRLF
  79       -- note however that this the default server uses this
  80       to copy binary data as well.
  81
  82       """
  83
  84       BLOCKSIZE = 8192
  85       while 1:
  86          data = source.read(BLOCKSIZE)
  87          if not data: break
  88          outputfile.write(data)
  89
  90    def guess_type(self, path):
  91       """Guess the type of a file.
  92
  93       Argument is a PATH (a filename).
  94
  95       Return value is a string of the form type/subtype,
  96       usable for a MIME Content-type header.
  97
  98       The default implementation looks the file's extension
  99       up in the table self.extensions_map, using text/plain
 100       as a default; however it would be permissible (if
 101       slow) to look inside the data to make a better guess.
 102
 103       """
 104
 105       base, ext = posixpath.splitext(path)
 106       if self.extensions_map.has_key(ext):
 107          return self.extensions_map[ext]
 108       ext = string.lower(ext)
 109       if self.extensions_map.has_key(ext):
 110          return self.extensions_map[ext]
 111       else:
 112          return self.extensions_map['']
 113
 114    extensions_map = {
 115       '': 'text/plain',   # Default, *must* be present
 116       '.html': 'text/html',
 117       '.htm': 'text/html',
 118       '.gif': 'image/gif',
 119       '.jpg': 'image/jpeg',
 120       '.jpeg': 'image/jpeg',
 121       }
 122
 123
 124
 125    def Good(self):
 126       self.send_response(200)
 127       self.send_header('Content-type',  'text/html')
 128       self.end_headers()
 129       self.wfile.write("<html><head><base href=\"http://127.0.0.1:8080/Questions/\"></head><body>")
 130
 131       q.AskQuestion("TB305")
 132
 133       self.wfile.write("<div class=question>")
 134       self.wfile.write(q.question)
 135       self.wfile.write("</div>")
 136
 137       self.wfile.write("<form name=abc action=\"http://127.0.0.1:8080\" method=get><div class=answer><input type=hidden name=ANSWER/>")
 138       self.wfile.write("<a href=\"javascript:document.gtd.ACTION.value='a';document.gtd.submit();\" class=button>A</a>"+q.answera+"<br>")
 139       self.wfile.write("<a href=\"javascript:document.gtd.ACTION.value='b';document.gtd.submit();\" class=button>B</a>"+q.answerb+"<br>")
 140       self.wfile.write("<a href=\"javascript:document.gtd.ACTION.value='c';document.gtd.submit();\" class=button>C</a>"+q.answerc+"<br>")
 141       self.wfile.write("<a href=\"javascript:document.gtd.ACTION.value='d';document.gtd.submit();\" class=button>D</a>"+q.answerd+"<br>")
 142       self.wfile.write("</div></form>")
 143
 144       self.wfile.write("</body></html>")
 145
 146
 147
 148    def do_POST(self):
 149       global rootnode
 150       ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
 151       if ctype == 'multipart/form-data':
 152           query=cgi.parse_multipart(self.rfile, pdict)
 153       self.send_response(301)
 154
 155       self.end_headers()
 156       upfilecontent = query.get('upfile')
 157       print "filecontent", upfilecontent[0]
 158       self.wfile.write("<HTML>POST OK.<BR><BR>");
 159       self.wfile.write(upfilecontent[0]);
 160
 161 def main():
 162    try:
 163       global q
 164       q = questions.Questions()
 165       server = HTTPServer(('', 8080), MyHandler)
 166       print 'started httpserver...'
 167       server.serve_forever()
 168    except KeyboardInterrupt:
 169       print '^C received, shutting down server'
 170       server.socket.close()
 171
 172 if __name__ == '__main__':
 173     main()