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executable file 60 lines (56 sloc) 2.373 kb
#!/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) != 5:
prog = basename(argv[0])
print 'Syntax: %s <method> <seconds> <path> <key>' % prog
print
print 'Where:'
print ' <method> The method to allow, GET or PUT.'
print ' Note: HEAD will also be allowed.'
print ' <seconds> The number of seconds from now to allow requests.'
print ' <path> The full path to the resource.'
print ' Example: /v1/AUTH_account/c/o'
print ' <key> The X-Account-Meta-Temp-URL-Key for the account.'
print
print 'Example output:'
print ' /v1/AUTH_account/c/o?temp_url_sig=34d49efc32fe6e3082e411e' \
'eeb85bd8a&temp_url_expires=1323482948'
print
print 'This can be used to form a URL to give out for the access '
print 'allowed. For example:'
print ' echo https://swift-cluster.example.com`%s GET 60 ' \
'/v1/AUTH_account/c/o mykey`' % prog
print
print 'Might output:'
print ' https://swift-cluster.example.com/v1/AUTH_account/c/o?' \
'temp_url_sig=34d49efc32fe6e3082e411eeeb85bd8a&' \
'temp_url_expires=1323482948'
exit(1)
method, seconds, path, key = argv[1:]
if method not in ('GET', 'PUT'):
print 'Please use either the GET or PUT method.'
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 five parts, ['', 'v1', 'a', 'c', 'o'], must be a v1 request, have
# account, container, and object values, and the object value can't just
# have '/'s.
if len(parts) != 5 or parts[0] or parts[1] != 'v1' or not parts[2] or \
not parts[3] or not parts[4].strip('/'):
print '<path> must point to an object.'
print 'For example: /v1/account/container/object'
exit(1)
sig = hmac.new(key, '%s\n%s\n%s' % (method, expires, path),
sha1).hexdigest()
print '%s?temp_url_sig=%s&temp_url_expires=%s' % (path, sig, expires)
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