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s3: Fix shared_credentials_file auth 

S3 backend shared_credentials_file option wasn't working neither from
config option nor from command line option. This was caused cause
shared_credentials_file_provider works as part of chain provider, but in
case user haven't specified access_token and access_key we had removed
(set nil) to credentials field, that may contain actual credentials got
from ChainProvider.

AWS_SHARED_CREDENTIALS_FILE env varible as far as i understood worked,
cause aws_sdk code handles it as one of default auth options, when
there's not configured credentials.
This commit is contained in:
Dmitry Chepurovskiy 2021-02-17 15:04:26 +03:00 committed by GitHub
parent cd6fd4be4b
commit 1605f9e14d
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backend/s3/s3.go
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@ -1559,9 +1559,6 @@ func s3Connection(ctx context.Context, opt *Options) (*s3.S3, *session.Session,
if opt.EnvAuth && opt.AccessKeyID == "" && opt.SecretAccessKey == "" {
// Enable loading config options from ~/.aws/config (selected by AWS_PROFILE env)
awsSessionOpts.SharedConfigState = session.SharedConfigEnable
// The session constructor (aws/session/mergeConfigSrcs) will only use the user's preferred credential source
// (from the shared config file) if the passed-in Options.Config.Credentials is nil.
awsSessionOpts.Config.Credentials = nil
}
ses, err := session.NewSessionWithOptions(awsSessionOpts)
if err != nil {