9a21e8fbef
clear_bootstrap_password() falls back to truncating the file through its own descriptor when the unlink fails, which is what happens on Windows while this one is open. That truncation could land after the equality check and before the write, so the rewrite put the revoked plaintext back. Append a single LF instead, and only to a file that is exactly the credential. An append cannot restore a revoked secret: over a cleared file the result is a lone newline, which strips to empty and reads back as no bootstrap password. Releases before the newline wrote the password with no terminator at all, so that is the only shape in the wild; anything else is left alone and keeps working because every reader strips. Never truncating also removes the short-write NUL-fill hazard entirely, so the write loop is gone. O_BINARY stays: without it Windows would turn the appended LF into CRLF. |
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| .. | ||
| .gitkeep | ||
| __init__.py | ||
| authentication.py | ||
| bootstrap_timeout.py | ||
| hashing.py | ||
| storage.py | ||
| terminal_prompt.py | ||