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annotate detectors/immutable_file_contents.py @ 8544:e738377b4ffe

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feature: add detector that prevents file content changes by Admin and other users. New detector and upgrading announcement. Also example of stripping content editing from the User role.
author John Rouillard <rouilj@ieee.org>
date Tue, 24 Mar 2026 22:11:27 -0400
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8544
e738377b4ffe feature: add detector that prevents file content changes by Admin and other users.
John Rouillard <rouilj@ieee.org>
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1 # HTML pages don't provide a way to change the contents of a file.
e738377b4ffe feature: add detector that prevents file content changes by Admin and other users.
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2 # However REST does allow setting content and the HTML interface can
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3 # be directed to update the content as well. This detector
e738377b4ffe feature: add detector that prevents file content changes by Admin and other users.
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4 # prevents changes to file content.
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e738377b4ffe feature: add detector that prevents file content changes by Admin and other users.
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6 from roundup.exceptions import UsageError
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8 def immutable_file_contents(db, cl, nodeid, newvalues):
e738377b4ffe feature: add detector that prevents file content changes by Admin and other users.
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9 ''' Prevent content changes to a file
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10 '''
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11 if 'content' in newvalues:
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12 raise UsageError("File contents are immutable. "
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13 "Rejecting change to contents.")
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16 def init(db):
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17 """If you have other FileClass based classes add them here."""
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18
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19 # fire before changes are made
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20 db.file.audit('set', immutable_file_contents)
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21 db.msg.audit('set', immutable_file_contents)
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