thodg/libgit2/tests/object

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  • Hash : 7655b2d8
    Author : Patrick Steinhardt
    Date : 2018-10-19T10:29:19 

    commit: fix reading out of bounds when parsing encoding

The commit message encoding is currently being parsed by the
`git__prefixcmp` function. As this function does not accept a buffer
length, it will happily skip over a buffer's end if it is not `NUL`
terminated.

Fix the issue by using `git__prefixncmp` instead. Add a test that
verifies that we are unable to parse the encoding field if it's cut off
by the supplied buffer length.

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