#!/usr/bin/env python import hmac from hashlib import sha1 from os.path import basename from sys import argv, exit from time import time if __name__ == '__main__': if len(argv) != 7: prog = basename(argv[0]) print 'Syntax: %s <path> <redirect> <max_file_size> ' \ '<max_file_count> <seconds> <key>' % prog print print 'Where:' print ' <path> The prefix to use for form uploaded' print ' objects. For example:' print ' /v1/account/container/object_prefix_ would' print ' ensure all form uploads have that path' print ' prepended to the browser-given file name.' print ' <redirect> The URL to redirect the browser to after' print ' the uploads have completed.' print ' <max_file_size> The maximum file size per file uploaded.' print ' <max_file_count> The maximum number of uploaded files' print ' allowed.' print ' <seconds> The number of seconds from now to allow' print ' the form post to begin.' print ' <key> The X-Account-Meta-Temp-URL-Key for the' print ' account.' print print 'Example output:' print ' Expires: 1323842228' print ' Signature: 18de97e47345a82c4dbfb3b06a640dbb' exit(1) path, redirect, max_file_size, max_file_count, seconds, key = argv[1:] try: max_file_size = int(max_file_size) except ValueError: max_file_size = -1 if max_file_size < 0: print 'Please use a <max_file_size> value greater than or equal to 0.' exit(1) try: max_file_count = int(max_file_count) except ValueError: max_file_count = 0 if max_file_count < 1: print 'Please use a positive <max_file_count> value.' exit(1) try: expires = int(time() + int(seconds)) except ValueError: expires = 0 if expires < 1: print 'Please use a positive <seconds> value.' exit(1) parts = path.split('/', 4) # Must be four parts, ['', 'v1', 'a', 'c'], must be a v1 request, have # account and container values, and optionally have an object prefix. if len(parts) < 4 or parts[0] or parts[1] != 'v1' or not parts[2] or \ not parts[3]: print '<path> must point to a container at least.' print 'For example: /v1/account/container' print ' Or: /v1/account/container/object_prefix' exit(1) sig = hmac.new(key, '%s\n%s\n%s\n%s\n%s' % (path, redirect, max_file_size, max_file_count, expires), sha1).hexdigest() print ' Expires:', expires print 'Signature:', sig