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Cannot access S3 bucket root when the access policy checks for empty prefix #111

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Cannot access S3 bucket root when the access policy checks for empty prefix #111

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Commits on Sep 1, 2021

  1. Cannot access S3 bucket root when the access policy checks for empty … 

    …prefix

When accessing bucket root, AWS tools send empty prefix (prefix=), contrary to libs3 that sends no prefix. But some AWS policy examples suggest conditions like:
"Condition":{"StringEquals":{"s3:prefix":["","home/"],"s3:delimiter":["/"]}}
With such conditions libs3 will fail to access the root.
Reported for WinSCP:
https://winscp.net/forum/viewtopic.php?t=31359
The same problem for Cyberduck:
https://trac.cyberduck.io/ticket/11549
    @martinprikryl
    martinprikryl authored Sep 1, 2021
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