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* Updated SHA-256 functionality in the get_url module

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(fixes issue #4277)

* The sha256sum error message now displays the invalid
  destination checksum if it doesn't match the one that
  is specified in the arguments. This is useful for
  debugging purposes.

* Non-alphanumeric characters, including the infamous
  Unicode zero-width space, are removed from the sha256sum
  argument prior to the check.
This commit is contained in:
Joshua Lund 2013-09-27 14:37:21 -06:00
parent 039d4c95d9
commit 20489f1346
1 changed files with 10 additions and 2 deletions
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12
library/network/get_url
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@ -22,6 +22,7 @@
import shutil import shutil
import datetime import datetime
import re
import tempfile import tempfile
DOCUMENTATION = ''' DOCUMENTATION = '''
@ -295,12 +296,19 @@ def main():
# Check the digest of the destination file and ensure that it matches the # Check the digest of the destination file and ensure that it matches the
# sha256sum parameter if it is present # sha256sum parameter if it is present
if sha256sum != '': if sha256sum != '':
# Remove any non-alphanumeric characters, including the infamous
# Unicode zero-width space
stripped_sha256sum = re.sub(r'\W+', '', sha256sum)
if not HAS_HASHLIB: if not HAS_HASHLIB:
os.remove(dest) os.remove(dest)
module.fail_json(msg="The sha256sum parameter requires hashlib, which is available in Python 2.5 and higher") module.fail_json(msg="The sha256sum parameter requires hashlib, which is available in Python 2.5 and higher")
if sha256sum != module.sha256(dest): else:
destination_checksum = module.sha256(dest)
if stripped_sha256sum != destination_checksum:
os.remove(dest) os.remove(dest)
module.fail_json(msg="The SHA-256 checksum for %s did not match %s" % (dest, sha256sum)) module.fail_json(msg="The SHA-256 checksum for %s did not match %s; it was %s." % (dest, sha256sum, destination_checksum))
os.remove(tmpsrc) os.remove(tmpsrc)