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+#!/usr/bin/python
+
+####
+# 02/2006 Will Holcomb <wholcomb@gmail.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# 7/26/07 Slightly modified by Brian Schneider
+# in order to support unicode files ( multipart_encode function )
+"""
+Usage:
+ Enables the use of multipart/form-data for posting forms
+
+Inspirations:
+ Upload files in python:
+ http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/146306
+ urllib2_file:
+ Fabien Seisen: <fabien@seisen.org>
+
+Example:
+ import MultipartPostHandler, urllib2, cookielib
+
+ cookies = cookielib.CookieJar()
+ opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookies),
+ MultipartPostHandler.MultipartPostHandler)
+ params = { "username" : "bob", "password" : "riviera",
+ "file" : open("filename", "rb") }
+ opener.open("http://wwww.bobsite.com/upload/", params)
+
+Further Example:
+ The main function of this file is a sample which downloads a page and
+ then uploads it to the W3C validator.
+"""
+
+import urllib
+import urllib2
+import mimetools, mimetypes
+import os, stat
+from cStringIO import StringIO
+
+class Callable:
+ def __init__(self, anycallable):
+ self.__call__ = anycallable
+
+# Controls how sequences are uncoded. If true, elements may be given multiple values by
+# assigning a sequence.
+doseq = 1
+
+class MultipartPostHandler(urllib2.BaseHandler):
+ handler_order = urllib2.HTTPHandler.handler_order - 10 # needs to run first
+
+ def http_request(self, request):
+ data = request.get_data()
+ if data is not None and type(data) != str:
+ v_files = []
+ v_vars = []
+ try:
+ for(key, value) in data.items():
+ if type(value) == file:
+ v_files.append((key, value))
+ else:
+ v_vars.append((key, value))
+ except TypeError:
+ systype, value, traceback = sys.exc_info()
+ raise TypeError, "not a valid non-string sequence or mapping object", traceback
+
+ if len(v_files) == 0:
+ data = urllib.urlencode(v_vars, doseq)
+ else:
+ boundary, data = self.multipart_encode(v_vars, v_files)
+
+ contenttype = 'multipart/form-data; boundary=%s' % boundary
+ if(request.has_header('Content-Type')
+ and request.get_header('Content-Type').find('multipart/form-data') != 0):
+ print "Replacing %s with %s" % (request.get_header('content-type'), 'multipart/form-data')
+ request.add_unredirected_header('Content-Type', contenttype)
+
+ request.add_data(data)
+
+ return request
+
+ def multipart_encode(vars, files, boundary = None, buf = None):
+ if boundary is None:
+ boundary = mimetools.choose_boundary()
+ if buf is None:
+ buf = StringIO()
+ for(key, value) in vars:
+ buf.write('--%s\r\n' % boundary)
+ buf.write('Content-Disposition: form-data; name="%s"' % key)
+ buf.write('\r\n\r\n' + value + '\r\n')
+ for(key, fd) in files:
+ file_size = os.fstat(fd.fileno())[stat.ST_SIZE]
+ filename = fd.name.split('/')[-1]
+ contenttype = mimetypes.guess_type(filename)[0] or 'application/octet-stream'
+ buf.write('--%s\r\n' % boundary)
+ buf.write('Content-Disposition: form-data; name="%s"; filename="%s"\r\n' % (key, filename))
+ buf.write('Content-Type: %s\r\n' % contenttype)
+ # buffer += 'Content-Length: %s\r\n' % file_size
+ fd.seek(0)
+ buf.write('\r\n' + fd.read() + '\r\n')
+ buf.write('--' + boundary + '--\r\n\r\n')
+ buf = buf.getvalue()
+ return boundary, buf
+ multipart_encode = Callable(multipart_encode)
+
+ https_request = http_request
+
+def main():
+ import tempfile, sys
+
+ validatorURL = "http://validator.w3.org/check"
+ opener = urllib2.build_opener(MultipartPostHandler)
+
+ def validateFile(url):
+ temp = tempfile.mkstemp(suffix=".html")
+ os.write(temp[0], opener.open(url).read())
+ params = { "ss" : "0", # show source
+ "doctype" : "Inline",
+ "uploaded_file" : open(temp[1], "rb") }
+ print opener.open(validatorURL, params).read()
+ os.remove(temp[1])
+
+ if len(sys.argv[1:]) > 0:
+ for arg in sys.argv[1:]:
+ validateFile(arg)
+ else:
+ validateFile("http://www.google.com")
+
+if __name__=="__main__":
+ main()
+