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https://github.com/9001/copyparty.git
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73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
#!/usr/bin/env python3
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import os
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import threading
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from argparse import Namespace
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from jinja2.nodes import Name
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from copyparty.fsutil import Fstab
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from typing import Any, Optional
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_ = r"""
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reject an upload if the target folder is on a ramdisk; useful when you
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have a volume where some folders inside are ramdisks but others aren't
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example usage as global config:
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--xbu I,bin/hooks/reject-ramdisk.py
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example usage as a volflag (per-volume config):
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-v srv/inc:inc:r:rw,ed:c,xbu=I,bin/hooks/reject-ramdisk.py
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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(share filesystem-path srv/inc as volume /inc,
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readable by everyone, read-write for user 'ed',
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running this plugin on all uploads with the params listed below)
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example usage as a volflag in a copyparty config file:
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[/inc]
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srv/inc
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accs:
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r: *
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rw: ed
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flags:
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xbu: I,bin/hooks/reject-ramdisk.py
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parameters explained,
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I = import; do not fork / subprocess
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IMPORTANT NOTE:
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because this hook is imported inside copyparty, you need to
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be EXCEPTIONALLY CAREFUL to avoid side-effects, for example
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DO NOT os.chdir() or anything like that, and also make sure
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that the name of this file is unique (cannot be the same as
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an existing python module/library)
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"""
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mutex = threading.Lock()
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fstab: Optional[Fstab] = None
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def main(ka: dict[str, Any]) -> dict[str, Any]:
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global fstab
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with mutex:
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log = ka["log"] # this is a copyparty NamedLogger function
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if not fstab:
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log("<HOOK:RAMDISK> creating fstab", 6)
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args = Namespace()
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args.mtab_age = 1 # cache the filesystem info for 1 sec
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fstab = Fstab(log, args, False)
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ap = ka["ap"] # abspath the upload is going to
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fs, mp = fstab.get(ap) # figure out what the filesystem is
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ramdisk = fs in ("tmpfs", "overlay") # looks like a ramdisk?
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# log("<HOOK:RAMDISK> fs=%r" % (fs,))
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if ramdisk:
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t = "Upload REJECTED because destination is a ramdisk"
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return {"rc": 1, "rejectmsg": t}
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return {"rc": 0}
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