upstream/mercurial-mirror Files · contrib/fuzz/manifest_corpus.py

dirs: resolve fuzzer OOM situation by disallowing deep directory hierarchies...

dirs: resolve fuzzer OOM situation by disallowing deep directory hierarchies It seems like 2048 directories ought to be enough for any reasonable use of Mercurial? A previous version of this patch scanned for slashes before any allocations occurred. That approach is slower than this in the happy path, but much faster than this in the case that too many slashes are encountered. We may want to revisit it in the future using memchr() so it'll be well-optimized by the libc we're using. .. bc: Mercurial will now defend against OOMs by refusing to operate on paths with 2048 or more components. This means that _extremely_ deep path hierarchies will be rejected, but we anticipate nobody is using hierarchies this deep. Differential Revision: https://phab.mercurial-scm.org/D7411

Augie Fackler - - Load All Authors

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             manifest_corpus.py
        
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      from __future__ import absolute_import, print_function

      import argparse

      import zipfile

      ap = argparse.ArgumentParser()

      ap.add_argument("out", metavar="some.zip", type=str, nargs=1)

      args = ap.parse_args()

      with zipfile.ZipFile(args.out[0], "w", zipfile.ZIP_STORED) as zf:

          zf.writestr(

              "manifest_zero",

              '''PKG-INFO\09b3ed8f2b81095a13064402e930565f083346e9a

      README\080b6e76643dcb44d4bc729e932fc464b3e36dbe3

      hg\0b6444347c629cc058d478023905cfb83b7f5bb9d

      mercurial/__init__.py\0b80de5d138758541c5f05265ad144ab9fa86d1db

      mercurial/byterange.py\017f5a9fbd99622f31a392c33ac1e903925dc80ed

      mercurial/fancyopts.py\0b6f52e23e356748c5039313d8b639cda16bf67ba

      mercurial/hg.py\023cc12f225f1b42f32dc0d897a4f95a38ddc8f4a

      mercurial/mdiff.py\0a05f65c44bfbeec6a42336cd2ff0b30217899ca3

      mercurial/revlog.py\0217bc3fde6d82c0210cf56aeae11d05a03f35b2b

      mercurial/transaction.py\09d180df101dc14ce3dd582fd998b36c98b3e39aa

      notes.txt\0703afcec5edb749cf5cec67831f554d6da13f2fb

      setup.py\0ccf3f6daf0f13101ca73631f7a1769e328b472c9

      tkmerge\03c922edb43a9c143682f7bc7b00f98b3c756ebe7

      ''',

          )

          zf.writestr("badmanifest_shorthashes", "narf\0aa\nnarf2\0aaa\n")

          zf.writestr(

              "badmanifest_nonull",

              "narf\0cccccccccccccccccccccccccccccccccccccccc\n"

              "narf2aaaaaaaaaaaaaaaaaaaa\n",

          )

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				from __future__ import absolute_import, print_function

				import argparse
				import zipfile

				ap = argparse.ArgumentParser()
				ap.add_argument("out", metavar="some.zip", type=str, nargs=1)
				args = ap.parse_args()

				with zipfile.ZipFile(args.out[0], "w", zipfile.ZIP_STORED) as zf:
				zf.writestr(
				"manifest_zero",
				'''PKG-INFO\09b3ed8f2b81095a13064402e930565f083346e9a
				README\080b6e76643dcb44d4bc729e932fc464b3e36dbe3
				hg\0b6444347c629cc058d478023905cfb83b7f5bb9d
				mercurial/__init__.py\0b80de5d138758541c5f05265ad144ab9fa86d1db
				mercurial/byterange.py\017f5a9fbd99622f31a392c33ac1e903925dc80ed
				mercurial/fancyopts.py\0b6f52e23e356748c5039313d8b639cda16bf67ba
				mercurial/hg.py\023cc12f225f1b42f32dc0d897a4f95a38ddc8f4a
				mercurial/mdiff.py\0a05f65c44bfbeec6a42336cd2ff0b30217899ca3
				mercurial/revlog.py\0217bc3fde6d82c0210cf56aeae11d05a03f35b2b
				mercurial/transaction.py\09d180df101dc14ce3dd582fd998b36c98b3e39aa
				notes.txt\0703afcec5edb749cf5cec67831f554d6da13f2fb
				setup.py\0ccf3f6daf0f13101ca73631f7a1769e328b472c9
				tkmerge\03c922edb43a9c143682f7bc7b00f98b3c756ebe7
				''',
				)
				zf.writestr("badmanifest_shorthashes", "narf\0aa\nnarf2\0aaa\n")
				zf.writestr(
				"badmanifest_nonull",
				"narf\0cccccccccccccccccccccccccccccccccccccccc\n"
				"narf2aaaaaaaaaaaaaaaaaaaa\n",
				)