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156 lines
4 KiB
Python
156 lines
4 KiB
Python
"""Simple HTTP Server.
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This module builds on BaseHTTPServer by implementing the standard GET
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and HEAD requests in a fairly straightforward manner.
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"""
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__version__ = "0.3"
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import os
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import sys
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import time
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import socket
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import string
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import posixpath
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import SocketServer
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import BaseHTTPServer
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class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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"""Simple HTTP request handler with GET and HEAD commands.
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This serves files from the current directory and any of its
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subdirectories. It assumes that all files are plain text files
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unless they have the extension ".html" in which case it assumes
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they are HTML files.
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The GET and HEAD requests are identical except that the HEAD
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request omits the actual contents of the file.
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"""
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server_version = "SimpleHTTP/" + __version__
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def do_GET(self):
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"""Serve a GET request."""
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f = self.send_head()
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if f:
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self.copyfile(f, self.wfile)
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f.close()
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def do_HEAD(self):
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"""Serve a HEAD request."""
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f = self.send_head()
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if f:
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f.close()
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def send_head(self):
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"""Common code for GET and HEAD commands.
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This sends the response code and MIME headers.
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Return value is either a file object (which has to be copied
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to the outputfile by the caller unless the command was HEAD,
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and must be closed by the caller under all circumstances), or
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None, in which case the caller has nothing further to do.
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"""
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path = self.translate_path(self.path)
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if os.path.isdir(path):
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self.send_error(403, "Directory listing not supported")
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return None
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try:
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f = open(path)
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except IOError:
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self.send_error(404, "File not found")
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return None
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self.send_response(200)
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self.send_header("Content-type", self.guess_type(path))
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self.end_headers()
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return f
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def translate_path(self, path):
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"""Translate a /-separated PATH to the local filename syntax.
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Components that mean special things to the local file system
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(e.g. drive or directory names) are ignored. (XXX They should
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probably be diagnosed.)
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"""
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path = posixpath.normpath(path)
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words = string.splitfields(path, '/')
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words = filter(None, words)
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path = os.getcwd()
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for word in words:
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drive, word = os.path.splitdrive(word)
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head, word = os.path.split(word)
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if word in (os.curdir, os.pardir): continue
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path = os.path.join(path, word)
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return path
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def copyfile(self, source, outputfile):
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"""Copy all data between two file objects.
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The SOURCE argument is a file object open for reading
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(or anything with a read() method) and the DESTINATION
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argument is a file object open for writing (or
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anything with a write() method).
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The only reason for overriding this would be to change
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the block size or perhaps to replace newlines by CRLF
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-- note however that this the default server uses this
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to copy binary data as well.
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"""
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BLOCKSIZE = 8192
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while 1:
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data = source.read(BLOCKSIZE)
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if not data: break
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outputfile.write(data)
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def guess_type(self, path):
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"""Guess the type of a file.
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Argument is a PATH (a filename).
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Return value is a string of the form type/subtype,
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usable for a MIME Content-type header.
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The default implementation looks the file's extension
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up in the table self.extensions_map, using text/plain
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as a default; however it would be permissible (if
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slow) to look inside the data to make a better guess.
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"""
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base, ext = posixpath.splitext(path)
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if self.extensions_map.has_key(ext):
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return self.extensions_map[ext]
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ext = string.lower(ext)
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if self.extensions_map.has_key(ext):
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return self.extensions_map[ext]
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else:
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return self.extensions_map['']
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extensions_map = {
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'': 'text/plain', # Default, *must* be present
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'.html': 'text/html',
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'.htm': 'text/html',
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'.gif': 'image/gif',
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'.jpg': 'image/jpeg',
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'.jpeg': 'image/jpeg',
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}
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def test(HandlerClass = SimpleHTTPRequestHandler,
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ServerClass = SocketServer.TCPServer):
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BaseHTTPServer.test(HandlerClass, ServerClass)
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if __name__ == '__main__':
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test()
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