to abort an upload, refresh the page and access the unpost tab,
which now includes unfinished uploads (sorted before completed ones)
can be configured through u2abort (global or volflag);
by default it requires both the IP and account to match
https://a.ocv.me/pub/g/nerd-stuff/2024-0310-stoltzekleiven.jpg
running behind cloudflare doesn't necessarily
mean being accessible ONLY through cloudflare
also include a general warning about optimal
configuration for non-cloudflare intermediates
as this option is very rarely useful, add global-option `--k304` to
unhide the button and/or set it default-enabled
the toggle will still appear when the feature was previously enabled by
a client, and the feature is still default-enabled for all IE clients
* docker: warn if there are config-files in ~/.config/copyparty
because somebody copied their config into
/cfg/copyparty instead of /cfg as intended
* docker: warn if there are no config-files in an included directory
* make misconfigured reverse-proxies more obvious
* explain cors rejections in server log
* indicate cors rejection in error toast
some reverse-proxies expect plaintext replies, and
we don't have a brotli decompressor to satisfy this
additionally, because brotli is https-gated (thx google),
it was already an impractical mess anyways
the sfx is now 7 KiB larger
chrome crashes if there's more than 2000 unique SVGs on one page, so
there was serverside useragent-sniffing to determine if the icon should
be an svg or a raster
however since the useragent is not in our vary, cloudflare wouldn't see
the difference and cache everything equally, meaning most folders would
display a random mix of png and svg thumbnails
move browser detection to the clientside to ensure unique URLs
as each chunk is written to the file, httpcli calls
up2k.confirm_chunk to register the chunk as completed, and the reply
indicates whether that was the final outstanding chunk, in which case
httpcli closes the file descriptors since there's nothing more to write
the issue is that the final chunk is registered as completed before the
file descriptors are closed, meaning there could be writes that haven't
finished flushing to disk yet
if the client decides to issue another handshake during this window,
up2k sees that all chunks are complete and calls up2k.finish_upload
even as some threads might still be flushing the final writes to disk
so the conditions to hit this bug were as follows (all must be true):
* multiprocessing is disabled
* there is a reverse-proxy
* a client has several idle connections and reuses one of those
* the server's filesystem is EXTREMELY slow, to the point where
closing a file takes over 30 seconds
the fix is to stop handshakes from being processed while a file is
being closed, which is unfortunately a small bottleneck in that it
prohibits initiating another upload while one is being finalized, but
the required complexity to handle this better is probably not worth it
(a separate mutex for each upload session or something like that)
this issue is mostly harmless, partially because it is super tricky to
hit (only aware of it happening synthetically), and because there is
usually no harmful consequences; the worst-case is if this were to
happen exactly as the server OS decides to crash, which would make the
file appear to be fully uploaded even though it's missing some data
(all extremely unlikely, but not impossible)
there is no performance impact; if anything it should now accept
new tcp connections slightly faster thanks to more granular locking
features which should be good to go:
* user groups
* assigning permissions by group
* dynamically created volumes based on username/groupname
* rebuild vfs when new users/groups appear
but several important features still pending;
* detect dangerous configurations
* dynamic vol below readable path
* remember volumes created during previous runs
* helps prevent unintended access
* correct filesystem-scan on startup
* allow mounting `/` (the entire filesystem) as a volume
* not that you should (really, you shouldn't)
* improve `-v` helptext
* change IdP group symbol to @ because % is used for file inclusion
* not technically necessary but is less confusing in docs
some clients (clonezilla-webdav) rapidly create and delete files;
this fails if copyparty is still hashing the file (usually the case)
and the same thing can probably happen due to antivirus etc
add global-option --rm-retry (volflag rm_retry) specifying
for how long (and how quickly) to keep retrying the deletion
default: retry for 5sec on windows, 0sec (disabled) on everything else
because this is only a problem on windows
* webdav: extend applesan regex with more stuff to exclude
* on macos, set applesan as default `--no-idx` to avoid indexing them
(they didn't show up in search since they're dotfiles, but still)
igloo irc has an absolute time limit of 2 minutes before it just
disconnects mid-upload and that kinda looked like it had a buggy
multipart generator instead of just being funny
anticipating similar events in the future, also log the
client-selected boundary value to eyeball its yoloness
primarily to support uploading from Igloo IRC but also generally useful
(not actually tested with Igloo IRC yet because it's a paid feature
so just gonna wait for spiky to wake up and tell me it didn't work)
* make gen_tree 0.1% faster
* improve filekey warning message
* fix oversight in 0c50ea1757
* support `--xdev` on windows (the python docs mention that os.scandir
doesn't assign st_ino, st_dev and st_nlink on win but i can't read)
* permission `.` grants dotfile visibility if user has `r` too
* `-ed` will grant dotfiles to all `r` accounts (same as before)
* volflag `dots` likewise
also drops compatibility for pre-0.12.0 `-v` syntax
(`-v .::red` will no longer translate to `-v .::r,ed`)
* start banning malicious clients according to --ban-422
* reply with a blank 500 to stop firefox from retrying like 20 times
* allow Cc's in a few specific URL params (filenames, dirnames)
connections from outside the specified list of IP prefixes are rejected
(docker-friendly alternative to -i 127.0.0.1)
also mkdir any missing folders when logging to file
add argument --hdr-au-usr which specifies a HTTP header to read
usernames from; entirely bypasses copyparty's password checks
for http/https clients (ftp/smb are unaffected)
users must exist in the copyparty config, passwords can be whatever
just the first step but already a bit useful on its own,
more to come in a few months
will probably fail when some devices (sup iphone) stream to car stereos
but at least passwords won't end up somewhere unexpected this way
(plus, the js no longer uses the jank url to request waveforms)
* cpp_uptime is now a gauge
* cpp_bans is now cpp_active_bans (and also a gauge)
and other related fixes:
* stop emitting invalid cpp_disk_size/free for offline volumes
* support overriding the spec-mandatory mimetype with ?mime=foo
* some malicious requests are now answered with HTTP 422,
so that they count against --ban-422
* do not include request headers when replying to invalid requests,
in case there is a reverse-proxy inserting something interesting
not even the deprecationwarning that got silently generated burning
20~30% of all CPU-time without actually displaying it anywhere, nice
python 3.12.0 is now only 5% slower than 3.11.6
also fixes some other, less-performance-fatal deprecations
never bonk anyone with read-access (able to see directory-listing)
or write-only (not able to retrieve any files at all) due to
either --ban-404 or --ban-url
fixes accidental ban when webdav-uploading files which
match any of the --ban-url patterns (#55)
also default-enables --ban-404 since it is now generally safe
(even when up2k is in turbo mode), plus make turbo smart enough to
disengage when necessary
this carries some intentional side-effects; each thumbnail format will
now be stored in its own subfolder under .hist/th/ making cleanup more
effective (jpeg and webm are dropped separately)
safest way to make copyparty like a general-purpose webserver where
index.html is returned as expected yet directory listing is entirely
disabled / unavailable
some of this looks shady af but appears to have been harmless
(decent amount of testing came out ok)
* some location normalization happened before unquoting; however vfs
handled this correctly so the outcome was just confusing messages
* some url parameters were double-decoded (unpost filter, move
destinations), causing some operations to fail unexpectedly
* invalid cache-control headers could be generated,
but not in a maliciously-beneficial way
(there are safeguards stripping newlines and control-characters)
also adds an exception-message cleanup step to strip away the
filesystem path that copyparty's python files are located at,
in case that could be interesting knowledge
* --ban-url: URLs which 404 and also match --sus-urls (bot-scan)
* --ban-403: trying to access volumes that dont exist or require auth
* --ban-422: invalid POST messages, fuzzing and such
* --nonsus-urls: regex of 404s which shouldn't trigger --ban-404
in may situations it makes sense to handle this logic inside copyparty,
since stuff like cloudflare and running copyparty on another physical
box than the nginx frontend is on becomes fairly clunky
* --doctitle defines most titles, prefixed with "--name: " by default
* the file browser is only prefixed with the --name itself
* --nth ("no-title-hostname") removes it
* also removed by --nih ("no-info-hostname")
it was possible to set cookie values which contained newlines,
thus terminating the http header and bleeding into the body.
We now disallow control-characters in queries,
but still allow them in paths, as copyparty supports
filenames containing newlines and other mojibake.
The changes in `set_k304` are not necessary in fixing the vulnerability,
but makes the behavior more correct.
* when accessing files inside an xdev volume, verify that the file
exists on the same device/filesystem as the volume root
* when accessing files inside an xvol volume, verify that the file
exists within any volume where the user has read access
* when deleting files, do not cascade upwards through empty folders
* when moving folders, also move any empty folders inside
the only remaining action which autoremoves empty folders is
files getting deleted as they expire volume lifetimes
also prevents accidentally moving parent folders into subfolders
(even though that actually worked surprisingly well)
mainly motivated by u2cli's folder syncing in turbo mode
which would un-turbo on most dupes due to wrong lastmod
disabled by default for regular http listings
(to avoid confusion in most regular usecases),
enable per-request with urlparam lt
enabled by default for single-level webdav listings
(because rclone hits the same issue as u2cli),
can be disabled with arg --dav-rt or volflag davrt
impossible to enable for recursive webdav listings
prevents running out of FDs thanks to thousands of sqlite3 sessions
and neatly sidesteps what could possibly be a race in python's
sqlite3 bindings where it sometimes forgets to close the fd
