mirror of
https://github.com/thegeeklab/drone-s3-sync.git
synced 2024-11-05 12:50:40 +00:00
37 lines
945 B
Go
37 lines
945 B
Go
package s3
|
|
|
|
import (
|
|
"crypto/md5"
|
|
"encoding/base64"
|
|
"io"
|
|
|
|
"github.com/aws/aws-sdk-go/aws/awserr"
|
|
"github.com/aws/aws-sdk-go/aws/request"
|
|
)
|
|
|
|
// contentMD5 computes and sets the HTTP Content-MD5 header for requests that
|
|
// require it.
|
|
func contentMD5(r *request.Request) {
|
|
h := md5.New()
|
|
|
|
// hash the body. seek back to the first position after reading to reset
|
|
// the body for transmission. copy errors may be assumed to be from the
|
|
// body.
|
|
_, err := io.Copy(h, r.Body)
|
|
if err != nil {
|
|
r.Error = awserr.New("ContentMD5", "failed to read body", err)
|
|
return
|
|
}
|
|
_, err = r.Body.Seek(0, 0)
|
|
if err != nil {
|
|
r.Error = awserr.New("ContentMD5", "failed to seek body", err)
|
|
return
|
|
}
|
|
|
|
// encode the md5 checksum in base64 and set the request header.
|
|
sum := h.Sum(nil)
|
|
sum64 := make([]byte, base64.StdEncoding.EncodedLen(len(sum)))
|
|
base64.StdEncoding.Encode(sum64, sum)
|
|
r.HTTPRequest.Header.Set("Content-MD5", string(sum64))
|
|
}
|