PythonUpload
Enabling File Upload in a Python CGI
Simple HTML form to upload a file, note that the action needs to set to the proper URL of the upload.cgi script (which follows below).
upload.html
<html>
<head>
<title>file upload</title>
</head>
<body>
<form action="/cgi-bin/upload.cgi" method="post" enctype="multipart/form-data">
<p>Ready to upload a file.</p>
<p><input type="file" name="attachment" /></p>
<p><input type="submit" value="upload now" /></p>
</form>
</body>
</html>
Script to receive and save a file from a multipart (file upload) form.
upload.cgi
#!/usr/bin/python
import cgi
import cgitb; cgitb.enable()
"""
upload.cgi
receives an uploaded file with the name attachment
this code could be generalized!
"""
# cgi.test()
def writeFileToPath(file, outputPath):
"""
requires: file object (not processed if false), outputPath is the full path and filename to be opened for writing
effects: saves the contents of the file object to outputPath
returns: number of bytes written to the outputPath
"""
bytesWritten = 0
if file:
out = 0
while 1:
bytes = file.read(1024)
if not bytes: break
if not out:
out = open(outputPath, 'w')
out.write(bytes)
bytesWritten += len(bytes)
if out:
out.close
return bytesWritten
form = cgi.FieldStorage()
attachment = form['attachment']
print "Content-type: text/html"
print
def getUploadFilename(attachment):
"""
Returns the filename (excluding any path) from the attachment
On IE/Windows, attachment.filename will be the CLIENT'S FULL LOCAL PATH to the uploaded file, not just the filename
e.g. 'C:\Desktop\BlahBlah\foo.jpg'
so this just takes whatever's to the right of the right-most backslash
e.g. 'foo.jpg'
"""
filename = attachment.filename
backslash_pos = filename.rfind('\\')
if (backslash_pos >= 0):
filename = filename[backslash_pos+1:]
return filename
bytesWritten = writeFileToPath(attachment.file, "attachments/" + getUploadFilename(attachment))
if bytesWritten:
print "<p>Uploaded %d bytes to %s.</p>" % (bytesWritten, attachment.filename)
else:
print "<p>No file to upload.</p>"