Extfs s3+ plugin throws "Please use AWS4-HMAC-SHA256" error

[dmitry_koterov]

AWS is switching to V4 authentication method, some regions (e.g. in Frankfurt) do not work with previous versions anymore. And even more: when we switch to V4, we have to specify hostnames to connect everywhere in API, so if you have buckets in different regions at the same time, s3+ fails.

So I fixed these issues and submitted a pull request:
​https://github.com/MidnightCommander/mc/pull/62

• Resolve "Please use AWS4-HMAC-SHA256" error: enforce the new V4 authentication method. It is required in many (if not all) locations nowadays.
• Now s3+ works with buckets in different regions: locations are auto-detected.
• Debug level specification support (MCVFS_EXTFS_S3_DEBUGLEVEL).

I'd be happy if you apply it. I'm ready to make changes in the plugin too if you have questions/remarks.

[dmitry_koterov]

...BTW steps to test the patch:

1. Log in to S3 Management Console in your browser.
2. Create one bucket in an US location.
3. Create one more bucket in Frankfurt.
4. Test how everything looks like when my patch is NOT applied:

export AWS_ACCESS_KEY_ID="..."
export AWS_SECRET_ACCESS_KEY="..."

in a shell window, then run mc and type:

cd ​s3://

You'll see a big red window full of exceptions and other mess.

5. Apply the patch, then run

cd ​s3://

Enjoy! :-)

[andrew_b]

Branch: 3470_s3
Initial changeset:e09d64179e8ea6fad4f6f539ad9147efc3a2b2ec

[andrew_b]

Merged to master: [4aa4b8224a734573160bbf3c927beb857cf229bd].