[ruby-core:18170] [Ruby 1.8.7 - Bug #410] base64 decode flaw

Issue #410 has been updated by Brian Candler.


And how does the corrupted output look?

I can replicate a similar problem here by pasting the string into irb, but it turned out to be nothing more than a lost character during pasting. This is under Ubuntu Hardy and Gnome terminal:

    instr = "..."
    instr.size

This shows instr to be 527 characters, when in fact it should be 528 (not including any newline). The unpacked result looks like this:

    ...
    ["starts-with", "$x-amz-meta-ta??B B?B

However I can paste that string directly into the Unix shell just fine: i.e.

    ruby -e 'puts "...".unpack("m").first'

and get the correct answer. So it seems to be just a problem with Unix pasting or readline, not with Ruby's base64 decoding.

You can fix this by pasting into a file, and using File.open(...) in irb to slurp in the data.

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