Before this change, some files were giving this error when downloaded
from Cloudflare and other providers.
ERROR corrupted on transfer: sizes differ NNN vs MMM
This is because these providers auto gzips the object when rclone
wasn't expecting it to. (AWS does not gzip objects without their being
uploaded gzipped).
This patch adds a quirk to for fix the problem and a flag to control
it. The quirk `might_gzip` is set to `true` for all providers except
AWS.
See: https://forum.rclone.org/t/s3-error-corrupted-on-transfer-sizes-differ-nnn-vs-mmm/33694/Fixes: #6533
Before this fix it was impossible to stop rclone generating an
X-Amx-Acl: header which is incompatible with GCS with uniform access
control and is generally deprecated at AWS.
The API endpoint GetBucketLocation requires
top level permission.
If we do an authenticated head request to a bucket, the bucket location will be returned in the HTTP headers.
Fixes#5066
This fixes vulnerability GO-2022-0969 reported by govulncheck:
HTTP/2 server connections can hang forever waiting for a clean
shutdown that was preempted by a fatal error. This condition can
be exploited by a malicious client to cause a denial of service.
Call stacks in your code:
Error: cmd/serve/restic/restic.go:150:22: github.com/rclone/rclone/cmd/serve/restic.init$1$1 calls golang.org/x/net/http2.Server.ServeConn
Found in: golang.org/x/net/http2@v0.0.0-20220805013720-a33c5aa5df48
Fixed in: golang.org/x/net/http2@v0.0.0-20220906165146-f3363e06e74c
More info: https://pkg.go.dev/vuln/GO-2022-0969
Before this change if --user-server-modtime was in use the ModTime
could change for an object as we receive it accurate to the nearest ms
in listings, but only accurate to the nearest second in HEAD and GET
requests.
Normally AWS returns the milliseconds as .000 in listings, but if
versions are in use it may not. Storj S3 also seems to return
milliseconds.
This patch tries to keep the maximum precision in the last modified
time, so it doesn't update a last modified time with a truncated
version if the times were the same to the nearest second.
See: https://forum.rclone.org/t/cache-fingerprint-miss-behavior-leading-to-false-positive-stalen-cache/33404/
Before this change rclone used statx() to read the metadata for files
from the local filesystem when `-M` was in use.
Unfortunately statx() was only introduced in kernel 4.11 which was
released in April 2017 so there are current systems (eg Centos 7)
still on kernel versions which don't support statx().
This patch checks to see if statx() is available and if it isn't, it
falls back to using fstatat() which was introduced in Linux 2.6.16
which is guaranteed for all Go versions.
See: https://forum.rclone.org/t/metadata-from-linux-local-s3-failed-to-copy-failed-to-read-metadata-from-source-object-function-not-implemented/33233/
