Is it possible to user presigned urls to upload files to AWS S3

Question

I am trying to use pre-singed urls to upload files to S3 and until a few minutes ago I believed it is possible (there is documentation on this issue), but I just encountered this phrase in the S3 developers guide:

Query string authentication is not supported for POST

What am I missing, By the way I am trying to use goamz (unofficial golang SDK for AWS) to do so and I keep getting signature errors.

EDIT: so far I figured out the signature, so I can sign the URL for GET, POST, PUT (I have not tried DELETE or PATCH they may work as well, if they are supported on the amazon part), right now my problem is I get zero size objects after I PUT), I'll post the code here when I make it work.

EDIT2: As mentioned below by @Basssethog it looks like, this problem is now solved in the official go-SDK

Ryan Parman · Accepted Answer · 2013-11-10 11:25:14Z

1

I know that it's supported for PUT, GET and DELETE requests, but the signing becomes a bit trickier. I know that there's support in the official PHP and Ruby SDKs; possibly other official SDKs.

You might be able to port the implementation to Go.

answered Nov 10, 2013 at 11:25

Ryan Parman

6,9191 gold badge31 silver badges45 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ali · Accepted Answer · 2016-10-03 17:50:03Z

1

It seems this problem has been fixed in the aws-sdk-go SDK by now:

svc := s3.New(nil)
req, _ := svc.PutObjectRequest(&s3.PutObjectInput{
    Bucket: aws.String("myBucket"),
    Key:    aws.String("myKey"),
    Body:   strings.NewReader("EXPECTED CONTENTS"),
})
str, err := req.Presign(15 * time.Minute)

log.Println("The URL is:", str, " err:", err)

Soure: http://zqsmm.qiniucdn.com/data/20150717110412/index.html

edited Oct 3, 2016 at 17:50

Ali

19.9k25 gold badges109 silver badges142 bronze badges

answered Oct 3, 2016 at 15:22

Basssethog

113 bronze badges

Comments

Ali · Accepted Answer · 2014-01-29 17:23:02Z

0

For the record it is possible,
I actually did it in go and contributed to code to goamz, find it here:
https://github.com/crowdmob/goamz

answered Jan 29, 2014 at 17:23

Ali

19.9k25 gold badges109 silver badges142 bronze badges

Collectives™ on Stack Overflow

Is it possible to user presigned urls to upload files to AWS S3

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related