upstream/mercurial-mirror Files · tests/test-revlog.t

debugcommands: introduce debugrevlogindex (BC)...

debugcommands: introduce debugrevlogindex (BC) `hg debugindex` was originally invented for displaying revlog index data and is highly tailored towards that. e.g. it accepts a --format option to display index data for a particular revlog version and displays things like offset and length. As we support non-revlog storage, it makes sense for `hg debugindex` to display generic index data and for there to exist storage-specific or storage-aware debug* commands for dumping non-generic index data. This commit effectively renames `hg debugindex` to `hg debugrevlogindex` and replaces `hg debugindex` with a version that is storage agnostic. Tests using --format have been updated to use `hg debugrevlogindex`. Output is backwards compatible. The replacement command uses the formatter, which means output can be templatized. At some point, we may want to tweak output (e.g. to add the revision size). But I don't feel like taking a bigger BC break at the moment. The renamed command/function had to be moved because check-code enforces alphabetical ordering of commands in this file. Differential Revision: https://phab.mercurial-scm.org/D4358

Gregory Szorc - - Load All Authors

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        $ hg init empty-repo

        $ cd empty-repo

      Flags on revlog version 0 are rejected

        >>> with open('.hg/store/00changelog.i', 'wb') as fh:

        ...     fh.write(b'\x00\x01\x00\x00') and None

        $ hg log

        abort: unknown flags (0x01) in version 0 revlog 00changelog.i!

        [255]

      Unknown flags on revlog version 1 are rejected

        >>> with open('.hg/store/00changelog.i', 'wb') as fh:

        ...     fh.write(b'\x00\x04\x00\x01') and None

        $ hg log

        abort: unknown flags (0x04) in version 1 revlog 00changelog.i!

        [255]

      Unknown version is rejected

        >>> with open('.hg/store/00changelog.i', 'wb') as fh:

        ...     fh.write(b'\x00\x00\x00\x02') and None

        $ hg log

        abort: unknown version (2) in revlog 00changelog.i!

        [255]

        $ cd ..

      Test for CVE-2016-3630

        $ hg init

        >>> open("a.i", "wb").write(

        ... b"""eJxjYGZgZIAAYQYGxhgom+k/FMx8YKx9ZUaKSOyqo4cnuKb8mbqHV5cBCVTMWb1Cwqkhe4Gsg9AD

        ... Joa3dYtcYYYBAQ8Qr4OqZAYRICPTSr5WKd/42rV36d+8/VmrNpv7NP1jQAXrQE4BqQUARngwVA=="""

        ... .decode("base64").decode("zlib"))

        $ hg debugrevlogindex a.i

           rev linkrev nodeid       p1           p2

             0       2 99e0332bd498 000000000000 000000000000

             1       3 6674f57a23d8 99e0332bd498 000000000000

        >>> from mercurial import revlog, vfs

        >>> tvfs = vfs.vfs(b'.')

        >>> tvfs.options = {b'revlogv1': True}

        >>> rl = revlog.revlog(tvfs, b'a.i')

        >>> rl.revision(1)

        mpatchError('patch cannot be decoded',)

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				$ hg init empty-repo
				$ cd empty-repo

				Flags on revlog version 0 are rejected

				>>> with open('.hg/store/00changelog.i', 'wb') as fh:
				... fh.write(b'\x00\x01\x00\x00') and None

				$ hg log
				abort: unknown flags (0x01) in version 0 revlog 00changelog.i!
				[255]

				Unknown flags on revlog version 1 are rejected

				>>> with open('.hg/store/00changelog.i', 'wb') as fh:
				... fh.write(b'\x00\x04\x00\x01') and None

				$ hg log
				abort: unknown flags (0x04) in version 1 revlog 00changelog.i!
				[255]

				Unknown version is rejected

				>>> with open('.hg/store/00changelog.i', 'wb') as fh:
				... fh.write(b'\x00\x00\x00\x02') and None

				$ hg log
				abort: unknown version (2) in revlog 00changelog.i!
				[255]

				$ cd ..

				Test for CVE-2016-3630

				$ hg init

				>>> open("a.i", "wb").write(
				... b"""eJxjYGZgZIAAYQYGxhgom+k/FMx8YKx9ZUaKSOyqo4cnuKb8mbqHV5cBCVTMWb1Cwqkhe4Gsg9AD
				... Joa3dYtcYYYBAQ8Qr4OqZAYRICPTSr5WKd/42rV36d+8/VmrNpv7NP1jQAXrQE4BqQUARngwVA=="""
				... .decode("base64").decode("zlib"))

				$ hg debugrevlogindex a.i
				rev linkrev nodeid p1 p2
				0 2 99e0332bd498 000000000000 000000000000
				1 3 6674f57a23d8 99e0332bd498 000000000000

				>>> from mercurial import revlog, vfs
				>>> tvfs = vfs.vfs(b'.')
				>>> tvfs.options = {b'revlogv1': True}
				>>> rl = revlog.revlog(tvfs, b'a.i')
				>>> rl.revision(1)
				mpatchError('patch cannot be decoded',)