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