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sslutil: synchronize hostname matching logic with CPython...

sslutil: synchronize hostname matching logic with CPython sslutil contains its own hostname matching logic. CPython has code for the same intent. However, it is only available to Python 2.7.9+ (or distributions that have backported 2.7.9's ssl module improvements). This patch effectively imports CPython's hostname matching code from its ssl.py into sslutil.py. The hostname matching code itself is pretty similar. However, the DNS name matching code is much more robust and spec conformant. As the test changes show, this changes some behavior around wildcard handling and IDNA matching. The new behavior allows wildcards in the middle of words (e.g. 'f*.com' matches 'foo.com') This is spec compliant according to RFC 6125 Section 6.5.3 item 3. There is one test where the matcher is more strict. Before, '*.a.com' matched '.a.com'. Now it doesn't match. Strictly speaking this is a security vulnerability.

Matt Mackall - - Load All Authors

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r22046:7a9cbb31 default


                r29452:26a5d605

3.8.4 stable

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        Matt Mackall
    
tests: replace exit 80 with #require

              r22046
            
      #require no-symlink

        Patrick Mezard
    
tests: unify test-no-symlinks

              r12917
            
      # The following script was used to create the bundle:

      #

      # hg init symlinks

      # cd symlinks

      # echo a > a

      # mkdir d

      # echo b > d/b

      # ln -s a a.lnk

      # ln -s d/b d/b.lnk

      # hg ci -Am t

      # hg bundle --base null ../test-no-symlinks.hg

      Extract a symlink on a platform not supporting them

        $ hg init t

        $ cd t

        Nicolas Dumazet
    
tests: move test bundles in a bundles/ subdirectory

              r14116
            
        $ hg pull -q "$TESTDIR/bundles/test-no-symlinks.hg"

        Patrick Mezard
    
tests: unify test-no-symlinks

              r12917
            
        $ hg update

        4 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cat a.lnk && echo

        a

        $ cat d/b.lnk && echo

        d/b

      Copy a symlink and move another

        $ hg copy a.lnk d/a2.lnk

        $ hg mv d/b.lnk b2.lnk

        $ hg ci -Am copy

        $ cat d/a2.lnk && echo

        a

        $ cat b2.lnk && echo

        d/b

      Bundle and extract again

        $ hg bundle --base null ../symlinks.hg

        2 changesets found

        $ cd ..

        $ hg init t2

        $ cd t2

        $ hg pull ../symlinks.hg

        pulling from ../symlinks.hg

        requesting all changes

        adding changesets

        adding manifests

        adding file changes

        added 2 changesets with 6 changes to 6 files

        (run 'hg update' to get a working copy)

        $ hg update

        5 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cat a.lnk && echo

        a

        $ cat d/a2.lnk && echo

        a

        $ cat b2.lnk && echo

        d/b

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Matt Mackall tests: replace exit 80 with #require	r22046	#require no-symlink
Patrick Mezard tests: unify test-no-symlinks	r12917
		# The following script was used to create the bundle:
		#
		# hg init symlinks
		# cd symlinks
		# echo a > a
		# mkdir d
		# echo b > d/b
		# ln -s a a.lnk
		# ln -s d/b d/b.lnk
		# hg ci -Am t
		# hg bundle --base null ../test-no-symlinks.hg

		Extract a symlink on a platform not supporting them

		$ hg init t
		$ cd t
Nicolas Dumazet tests: move test bundles in a bundles/ subdirectory	r14116	$ hg pull -q "$TESTDIR/bundles/test-no-symlinks.hg"
Patrick Mezard tests: unify test-no-symlinks	r12917	$ hg update
		4 files updated, 0 files merged, 0 files removed, 0 files unresolved
		$ cat a.lnk && echo
		a
		$ cat d/b.lnk && echo
		d/b

		Copy a symlink and move another

		$ hg copy a.lnk d/a2.lnk
		$ hg mv d/b.lnk b2.lnk
		$ hg ci -Am copy
		$ cat d/a2.lnk && echo
		a
		$ cat b2.lnk && echo
		d/b

		Bundle and extract again

		$ hg bundle --base null ../symlinks.hg
		2 changesets found
		$ cd ..
		$ hg init t2
		$ cd t2
		$ hg pull ../symlinks.hg
		pulling from ../symlinks.hg
		requesting all changes
		adding changesets
		adding manifests
		adding file changes
		added 2 changesets with 6 changes to 6 files
		(run 'hg update' to get a working copy)
		$ hg update
		5 files updated, 0 files merged, 0 files removed, 0 files unresolved
		$ cat a.lnk && echo
		a
		$ cat d/a2.lnk && echo
		a
		$ cat b2.lnk && echo
		d/b