this avoids a false-positive in the info-zip unzip zipbomb detector.
unfortunately,
* now impossible to extract large (4 GiB) zipfiles using old software
(WinXP, macos 10.12)
* now less viable to stream download-as-zip into a zipfile unpacker
(please use download-as-tar for that purpose)
context:
the zipfile specification (APPNOTE.TXT) is slightly ambiguous as to when
data-descriptor (0x504b0708) filesize-fields change from 32bit to 64bit;
both copyparty and libarchive independently made the same interpretation
that this is only when the local header is zip64, AND the size-fields
are both 0xFFFFFFFF. This makes sense because the data descriptor is
only necessary when that particular file-to-be-added exceeds 4 GiB,
and/or when the crc32 is not known ahead of time.
another interpretation, seen in an early version of the patchset
to fix CVE-2019-13232 (zip-bombs) in the info-zip unzip command,
believes the only requirement is that the local header is zip64.
in many linux distributions, the unzip command would thus fail on
zipfiles created by copyparty, since they (by default) satisfy
the three requirements to hit the zipbomb false-positive:
* total filesize exceeds 4 GiB, and...
* a mix of regular (32bit) and zip64 entries, and...
* streaming-mode zipfile (not made with ?zip=crc)
this issue no longer exists in a more recent version of that patchset,
https://github.com/madler/unzip/commit/af0d07f95809653b
but this fix has not yet made it into most linux distros
directory-tree sidebar did not sort correctly for non-ascii names
also fix a natural-sort bug; it only took effect for the
initial folder load, and not when changing the sort-order
also, natural-sort will now apply to all non-numeric fields,
not just the filename like before
* support newlines in svg files;
* `--error--\ncheck\nserver\nlog`
* `upload\nonly`
* thumbnails of files with lastmodified year 1601 would
make the cleaner print a harmless but annoying warning
the thumbnailer / audio transcoder could return misleading errors
if the operation fails due to insufficient filesystem permissions
try reading a few bytes from the file and bail early if it fails,
and detect/log unwritable output folders for thumbnails
also fixes http-response to only return svg-formatted errors
if the initial request expects a picture in response, not audio
remove an overly careful safety-check which would refuse creating
directories if the location was outside of the volume's base-path
it is safe to trust `rem` due to `vpath = undot(vpath)` and
a similar check being performed inside `vfs.get` as well,
so this served no purpose
the up2k databases are, by default, stored in a `.hist` subfolder
inside each volume, next to thumbnails and transcoded audio
add a new option for storing the databases in a separate location,
making it possible to tune the underlying filesystem for optimal
performance characteristics
the `--hist` global-option and `hist` volflag still behave like
before, but `--dbpath` and volflag `dbpath` will override the
histpath for the up2k-db and up2k-snap exclusivey
`--md-hist` / volflag `md_hist` specifies where to put old
versions of markdown files when edited using the web-ui;
* `s` = create `.hist` subfolder next to the markdown file
(the default, both previously and now)
* `v` = use the volume's hist-path, either according to
`--hist` or the `hist` volflag. NOTE: old versions
will not be retrievable through the web-ui
* `n` = nope / disabled; overwrite without backup
specifically google, but also some others, have started ignoring
rel="nofollow" while also understanding just enough javascript to
try viewing binary files as text
download-as-tar-gz becomes 2.4x faster in docker
segfaults on windows, so don't use it there
does not affect fedora or gentoo,
since zlib-ng is already system-default on those
also adds a global-option to write list of successful
binds to a textfile, for automation / smoketest purposes
too restrictive, blocking editing through webdav and ftp
but since logues and readmes can be used as helptext for users
with write-only access, it makes sense to block logue/readme
uploads from write-only users
users with write-only access can still upload any file as before,
but the filename prefix `_wo_` is added onto files named either
README.md | PREADME.md | .prologue.html | .epilogue.html
the new option `--wo-up-readme` restores previous behavior, and
will not add the filename-prefix for readmes/logues
