Problem with CGI file upload

[Shichang Zhao]

I got the following problems with cgi module:
        1. when uploading a .gif file, the content is truncated, if the GIF 
file to be uploaded is large.
        2. For microsoft word document, after I save the uploaded file to a 
tmp file in my cgi-bin directory, I try to open the file using microsoft 
word. What happens is that the word shows just some weird characters.

The following is the script I am using:
import cgi
form = cgi.FieldStorage()
fileitem = form["UPLOADED_1"]

f = open("tmp.doc", "wb")
while 1:
    line = fileitem.file.read()
    if line:
        f.write(line)
    else:
        break
f.close()
print "Content-type: text/html"
print
print
print "<pre>Thanks for using this applicaiton.</pre>"

Can someone point out me what is wrong?

Thanks.