Backblaze has updated its b2_authorize_account API endpoint, newly created
application keys are now "multi-bucket" keys, capable of being limited to
multiple buckets. These keys can only be used with the v4 endpoint, not v1 which
returns an HTTP 400.
This commit switches authorization to the v4 endpoint, and allowing such keys to
work with any of the allowed buckets.
With multi-bucket keys, missing restricted buckets can be non-fatal.
Supports listing root with multi-bucket API keys
94deb6bd6f b2: Add Server-Side encryption support
From the commit above, without setting SSE, rclone would send invalid
SSE requests with empty strings. This is as omitempty only works with
struct pointers not structs.
This commit adds SSE-C (Server-Side Encryption - Customer) support to
the B2 native backend. The server uses a customer provided AES-256 key
to encrypt the files when you upload them to the bucket, and then it
discards your key from the servers RAM after you're done uploading.
The option names and descriptions are based off the S3 backend
implementation as the way S3 and B2 does SSE-C is pretty similar.
Fixes#6585
This commit modernizes Go usage. This was done with:
go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...
Then files needed to be `go fmt`ed and a few comments needed to be
restored.
The modernizations include replacing
- if/else conditional assignment by a call to the built-in min or max functions added in go1.21
- sort.Slice(x, func(i, j int) bool) { return s[i] < s[j] } by a call to slices.Sort(s), added in go1.21
- interface{} by the 'any' type added in go1.18
- append([]T(nil), s...) by slices.Clone(s) or slices.Concat(s), added in go1.21
- loop around an m[k]=v map update by a call to one of the Collect, Copy, Clone, or Insert functions from the maps package, added in go1.21
- []byte(fmt.Sprintf...) by fmt.Appendf(nil, ...), added in go1.19
- append(s[:i], s[i+1]...) by slices.Delete(s, i, i+1), added in go1.21
- a 3-clause for i := 0; i < n; i++ {} loop by for i := range n {}, added in go1.22
This factors copy out of SetModTime and Copy so it can be called from
both places.
This also reworks all the multipart uploading to use sync.Errgroup and
memory pooling like the other backends. This makes it more memory
efficient and handle errors better.
See: https://forum.rclone.org/t/copying-files-within-a-b2-bucket/16680/10
Before this fix rclone would just use the authorised bucket regardless
of what bucket you put on the command line.
This uses the new `bucketName` response in the API and checks that the
user is using the correct bucket name to avoid accidents.
Fixes#2839
The purpose of this is to make it easier to maintain and eventually to
allow the rclone backends to be re-used in other projects without
having to use the rclone configuration system.
The new code layout is documented in CONTRIBUTING.
