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6c94a63f1c
hooks can now interrupt or redirect actions, and initiate related actions, by printing json on stdout with commands mainly to mitigate limitations such as sharex/sharex#3992 xbr/xau can redirect uploads to other destinations with `reloc` and most hooks can initiate indexing or deletion of additional files by giving a list of vpaths in json-keys `idx` or `del` there are limitations; * xbu/xau effects don't apply to ftp, tftp, smb * xau will intentionally fail if a reloc destination exists * xau effects do not apply to up2k also provides more details for hooks: * xbu/xau: basic-uploader vpath with filename * xbr/xar: add client ip
141 lines
3.5 KiB
Python
141 lines
3.5 KiB
Python
#!/usr/bin/env python3
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import sys
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import json
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import shutil
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import platform
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import subprocess as sp
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from urllib.parse import quote
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_ = r"""
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try to avoid race conditions in caching proxies
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(primarily cloudflare, but probably others too)
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by means of the most obvious solution possible:
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just as each file has finished uploading, use
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the server's external URL to download the file
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so that it ends up in the cache, warm and snug
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this intentionally delays the upload response
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as it waits for the file to finish downloading
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before copyparty is allowed to return the URL
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NOTE: you must edit this script before use,
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replacing https://example.com with your URL
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NOTE: if the files are only accessible with a
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password and/or filekey, you must also add
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a cromulent password in the PASSWORD field
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NOTE: needs either wget, curl, or "requests":
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python3 -m pip install --user -U requests
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example usage as global config:
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--xau j,t10,bin/hooks/into-the-cache-it-goes.py
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parameters explained,
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xau = execute after upload
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j = this hook needs upload information as json (not just the filename)
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t10 = abort download and continue if it takes longer than 10sec
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example usage as a volflag (per-volume config):
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-v srv/inc:inc:r:rw,ed:c,xau=j,t10,bin/hooks/into-the-cache-it-goes.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 params explained above)
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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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xau: j,t10,bin/hooks/into-the-cache-it-goes.py
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"""
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# replace this with your site's external URL
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# (including the :portnumber if necessary)
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SITE_URL = "https://example.com"
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# if downloading is protected by passwords or filekeys,
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# specify a valid password between the quotes below:
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PASSWORD = ""
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# if file is larger than this, skip download
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MAX_MEGABYTES = 8
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# =============== END OF CONFIG ===============
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WINDOWS = platform.system() == "Windows"
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def main():
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fun = download_with_python
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if shutil.which("curl"):
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fun = download_with_curl
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elif shutil.which("wget"):
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fun = download_with_wget
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inf = json.loads(sys.argv[1])
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if inf["sz"] > 1024 * 1024 * MAX_MEGABYTES:
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print("[into-the-cache] file is too large; will not download")
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return
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file_url = "/"
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if inf["vp"]:
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file_url += inf["vp"] + "/"
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file_url += inf["ap"].replace("\\", "/").split("/")[-1]
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file_url = SITE_URL.rstrip("/") + quote(file_url, safe=b"/")
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print("[into-the-cache] %s(%s)" % (fun.__name__, file_url))
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fun(file_url, PASSWORD.strip())
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print("[into-the-cache] Download OK")
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def download_with_curl(url, pw):
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cmd = ["curl"]
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if pw:
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cmd += ["-HPW:%s" % (pw,)]
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nah = sp.DEVNULL
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sp.check_call(cmd + [url], stdout=nah, stderr=nah)
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def download_with_wget(url, pw):
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cmd = ["wget", "-O"]
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cmd += ["nul" if WINDOWS else "/dev/null"]
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if pw:
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cmd += ["--header=PW:%s" % (pw,)]
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nah = sp.DEVNULL
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sp.check_call(cmd + [url], stdout=nah, stderr=nah)
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def download_with_python(url, pw):
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import requests
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headers = {}
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if pw:
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headers["PW"] = pw
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with requests.get(url, headers=headers, stream=True) as r:
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r.raise_for_status()
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for _ in r.iter_content(chunk_size=1024 * 256):
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pass
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if __name__ == "__main__":
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main()
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