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s3: complete sse-c implementation

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This now can complete all operations with SSE-C enabled.

Fixes #2827
See: https://forum.rclone.org/t/issues-with-aws-s3-sse-c-getting-strange-log-entries-and-errors/20553
This commit is contained in:
Nick Craig-Wood 2020-11-20 11:15:48 +00:00
parent 1ce0b45965
commit 53aa03cc44
1 changed files with 44 additions and 19 deletions
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63
backend/s3/s3.go
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@ -915,8 +915,11 @@ isn't set then "acl" is used instead.`,
Help: "None",
}},
}, {
Name: "sse_customer_key_md5",
Help: "If using SSE-C you must provide the secret encryption key MD5 checksum.",
Name: "sse_customer_key_md5",
Help: `If using SSE-C you may provide the secret encryption key MD5 checksum (optional).
If you leave it blank, this is calculated automatically from the sse_customer_key provided.
`,
Provider: "AWS,Ceph,Minio",
Advanced: true,
Examples: []fs.OptionExample{{
@ -1590,6 +1593,11 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
if opt.BucketACL == "" {
opt.BucketACL = opt.ACL
}
if opt.SSECustomerKey != "" && opt.SSECustomerKeyMD5 == "" {
// calculate CustomerKeyMD5 if not supplied
md5sumBinary := md5.Sum([]byte(opt.SSECustomerKey))
opt.SSECustomerKeyMD5 = base64.StdEncoding.EncodeToString(md5sumBinary[:])
}
c, ses, err := s3Connection(opt)
if err != nil {
return nil, err
@ -1622,25 +1630,21 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
SlowModTime: true,
}).Fill(ctx, f)
if f.rootBucket != "" && f.rootDirectory != "" {
// Check to see if the object exists
encodedDirectory := f.opt.Enc.FromStandardPath(f.rootDirectory)
req := s3.HeadObjectInput{
Bucket: &f.rootBucket,
Key: &encodedDirectory,
}
err = f.pacer.Call(func() (bool, error) {
_, err = f.c.HeadObject(&req)
return f.shouldRetry(err)
})
if err == nil {
newRoot := path.Dir(f.root)
if newRoot == "." {
newRoot = ""
// Check to see if the (bucket,directory) is actually an existing file
oldRoot := f.root
newRoot, leaf := path.Split(oldRoot)
f.setRoot(newRoot)
_, err := f.NewObject(ctx, leaf)
if err != nil {
if err == fs.ErrorObjectNotFound || err == fs.ErrorNotAFile {
// File doesn't exist or is a directory so return old f
f.setRoot(oldRoot)
return f, nil
}
f.setRoot(newRoot)
// return an error with an fs which points to the parent
return f, fs.ErrorIsFile
return nil, err
}
// return an error with an fs which points to the parent
return f, fs.ErrorIsFile
}
// f.listMultipartUploads()
return f, nil
@ -2152,6 +2156,18 @@ func (f *Fs) copy(ctx context.Context, req *s3.CopyObjectInput, dstBucket, dstPa
if f.opt.ServerSideEncryption != "" {
req.ServerSideEncryption = &f.opt.ServerSideEncryption
}
if f.opt.SSECustomerAlgorithm != "" {
req.SSECustomerAlgorithm = &f.opt.SSECustomerAlgorithm
req.CopySourceSSECustomerAlgorithm = &f.opt.SSECustomerAlgorithm
}
if f.opt.SSECustomerKey != "" {
req.SSECustomerKey = &f.opt.SSECustomerKey
req.CopySourceSSECustomerKey = &f.opt.SSECustomerKey
}
if f.opt.SSECustomerKeyMD5 != "" {
req.SSECustomerKeyMD5 = &f.opt.SSECustomerKeyMD5
req.CopySourceSSECustomerKeyMD5 = &f.opt.SSECustomerKeyMD5
}
if f.opt.SSEKMSKeyID != "" {
req.SSEKMSKeyId = &f.opt.SSEKMSKeyID
}
@ -2700,6 +2716,15 @@ func (o *Object) headObject(ctx context.Context) (resp *s3.HeadObjectOutput, err
Bucket: &bucket,
Key: &bucketPath,
}
if o.fs.opt.SSECustomerAlgorithm != "" {
req.SSECustomerAlgorithm = &o.fs.opt.SSECustomerAlgorithm
}
if o.fs.opt.SSECustomerKey != "" {
req.SSECustomerKey = &o.fs.opt.SSECustomerKey
}
if o.fs.opt.SSECustomerKeyMD5 != "" {
req.SSECustomerKeyMD5 = &o.fs.opt.SSECustomerKeyMD5
}
err = o.fs.pacer.Call(func() (bool, error) {
var err error
resp, err = o.fs.c.HeadObjectWithContext(ctx, &req)