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When parsing the patch image from a string, we split the string
by newlines to get a line-based view of it. To split, we use
`memchr` on the buffer and limit the buffer length by the
original length provided by the caller. This works just fine for
the first line, but for every subsequent line we need to actually
subtract the amount of bytes that we have already read.
The above issue can be easily triggered by having a source buffer
with at least two lines, where the second line does _not_ end in
a newline. Given a string "foo\nb", we have an original length of
five bytes. After having extracted the first line, we will point
to 'b' and again try to `memchr(p, '\n', 5)`, resulting in an
out-of-bounds read of four bytes.
Fix the issue by correctly subtracting the amount of bytes
already read.
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Right now it is only possible to create remotes from a repository. While
this is probably the most common use-case, there are commands which make
sense even without a repository, e.g. the equivalence of `git
ls-remote`. Add a new function `git_remote_create_detached`, which
simply accepts a URL.
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Add me. :)
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In email, Torsten Bögershausen agreed that we could use his code
from core Git in libgit2 under the modified license. Also, since
his work is the basis for much of the precompose unicode support,
I have added him to the AUTHORS file as well.
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Signed-off-by: Sven Strickroth <email@cs-ware.de>
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Add Florian Forster to hall of fame
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Permission recieved from Florian Forster on Jan 07 2013 to include
any changes of his from core Git into LibGit2.
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Update to Authors
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See lines 59-60 from https://github.com/libgit2/libgit2/blob/44b1ff4c1209c34360cc0c43761c40f5f5020886/src/filter.c which contain a couple of lines of code to ignore an EOF at the end of a file when detecting if it is a text file or not. These came from this contribution that Dmitry made to core Git back in 2008 (https://github.com/git/git/commit/f9dd4bf4e58af0b4828c7e7013080dba59f8a6b9) which was committed by Junio.
Dmitry gave his permission for these changes to be included in LibGit2 as well via email to vmg and myself
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Permission obtained from Holger Weiss to include all of his contributions to Git into LibGit2. See https://github.com/git/git/commit/21e403a7b956a95a36f218439f82b1c8af869257
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Depending on the operation, we need to consider gitattributes
in both the work dir and the index. This adds a parameter to
all of the gitattributes related functions that allows user
control of attribute reading behavior (i.e. prefer workdir,
prefer index, only use index).
This fix also covers allowing us to check attributes (and
hence do diff and status) on bare repositories.
This was a somewhat larger change that I hoped because it had
to change the cache key used for gitattributes files.
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