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

sslutil: require TLS 1.1+ when supported...

sslutil: require TLS 1.1+ when supported Currently, Mercurial will use TLS 1.0 or newer when connecting to remote servers, selecting the highest TLS version supported by both peers. On older Pythons, only TLS 1.0 is available. On newer Pythons, TLS 1.1 and 1.2 should be available. Security professionals recommend avoiding TLS 1.0 if possible. PCI DSS 3.1 "strongly encourages" the use of TLS 1.2. Known attacks like BEAST and POODLE exist against TLS 1.0 (although mitigations are available and properly configured servers aren't vulnerable). I asked Eric Rescorla - Mozilla's resident crypto expert - whether Mercurial should drop support for TLS 1.0. His response was "if you can get away with it." Essentially, a number of servers on the Internet don't support TLS 1.1+. This is why web browsers continue to support TLS 1.0 despite desires from security experts. This patch changes Mercurial's default behavior on modern Python versions to require TLS 1.1+, thus avoiding known security issues with TLS 1.0 and making Mercurial more secure by default. Rather than drop TLS 1.0 support wholesale, we still allow TLS 1.0 to be used if configured. This is a compromise solution - ideally we'd disallow TLS 1.0. However, since we're not sure how many Mercurial servers don't support TLS 1.1+ and we're not sure how much user inconvenience this change will bring, I think it is prudent to ship an escape hatch that still allows usage of TLS 1.0. In the default case our users get better security. In the worst case, they are no worse off than before this patch. This patch has no effect when running on Python versions that don't support TLS 1.1+. As the added test shows, connecting to a server that doesn't support TLS 1.1+ will display a warning message with a link to our wiki, where we can guide people to configure their client to allow less secure connections.

Matt Mackall - - Load All Authors

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      This test makes sure that we don't mark a file as merged with its ancestor

      when we do a merge.

        $ cat <<EOF > merge

        > import sys, os

        > print "merging for", os.path.basename(sys.argv[1])

        > EOF

        $ HGMERGE="python ../merge"; export HGMERGE

      Creating base:

        $ hg init a

        $ cd a

        $ echo 1 > foo

        $ echo 1 > bar

        $ echo 1 > baz

        $ echo 1 > quux

        $ hg add foo bar baz quux

        $ hg commit -m "base"

        $ cd ..

        $ hg clone a b

        updating to branch default

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

      Creating branch a:

        $ cd a

        $ echo 2a > foo

        $ echo 2a > bar

        $ hg commit -m "branch a"

      Creating branch b:

        $ cd ..

        $ cd b

        $ echo 2b > foo

        $ echo 2b > baz

        $ hg commit -m "branch b"

      We shouldn't have anything but n state here:

        $ hg debugstate --nodates | grep -v "^n"

        [1]

      Merging:

        $ hg pull ../a

        pulling from ../a

        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 1 changesets with 2 changes to 2 files (+1 heads)

        (run 'hg heads' to see heads, 'hg merge' to merge)

        $ hg merge -v

        resolving manifests

        getting bar

        merging foo

        merging for foo

        1 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ echo 2m > foo

        $ echo 2b > baz

        $ echo new > quux

        $ hg ci -m "merge"

      main: we should have a merge here:

        $ hg debugindex --changelog

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0      73  .....       0 cdca01651b96 000000000000 000000000000 (re)

             1        73      68  .....       1 f6718a9cb7f3 cdca01651b96 000000000000 (re)

             2       141      68  .....       2 bdd988058d16 cdca01651b96 000000000000 (re)

             3       209      66  .....       3 d8a521142a3c f6718a9cb7f3 bdd988058d16 (re)

      log should show foo and quux changed:

        $ hg log -v -r tip

        changeset:   3:d8a521142a3c

        tag:         tip

        parent:      1:f6718a9cb7f3

        parent:      2:bdd988058d16

        user:        test

        date:        Thu Jan 01 00:00:00 1970 +0000

        files:       foo quux

        description:

        merge

      foo: we should have a merge here:

        $ hg debugindex foo

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       4  .....       1 2ffeddde1b65 b8e02f643373 000000000000 (re)

             2         7       4  .....       2 33d1fb69067a b8e02f643373 000000000000 (re)

             3        11       4  .....       3 aa27919ee430 2ffeddde1b65 33d1fb69067a (re)

      bar: we should not have a merge here:

        $ hg debugindex bar

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       4  .....       2 33d1fb69067a b8e02f643373 000000000000 (re)

      baz: we should not have a merge here:

        $ hg debugindex baz

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       4  .....       1 2ffeddde1b65 b8e02f643373 000000000000 (re)

      quux: we should not have a merge here:

        $ hg debugindex quux

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       5  .....       3 6128c0f33108 b8e02f643373 000000000000 (re)

      Manifest entries should match tips of all files:

        $ hg manifest --debug

        33d1fb69067a0139622a3fa3b7ba1cdb1367972e 644   bar

        2ffeddde1b65b4827f6746174a145474129fa2ce 644   baz

        aa27919ee4303cfd575e1fb932dd64d75aa08be4 644   foo

        6128c0f33108e8cfbb4e0824d13ae48b466d7280 644   quux

      Everything should be clean now:

        $ hg status

        $ hg verify

        checking changesets

        checking manifests

        crosschecking files in changesets and manifests

        checking files

        4 files, 4 changesets, 10 total revisions

        $ cd ..

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				This test makes sure that we don't mark a file as merged with its ancestor
				when we do a merge.

				$ cat <<EOF > merge
				> import sys, os
				> print "merging for", os.path.basename(sys.argv[1])
				> EOF
				$ HGMERGE="python ../merge"; export HGMERGE

				Creating base:

				$ hg init a
				$ cd a
				$ echo 1 > foo
				$ echo 1 > bar
				$ echo 1 > baz
				$ echo 1 > quux
				$ hg add foo bar baz quux
				$ hg commit -m "base"

				$ cd ..
				$ hg clone a b
				updating to branch default
				4 files updated, 0 files merged, 0 files removed, 0 files unresolved

				Creating branch a:

				$ cd a
				$ echo 2a > foo
				$ echo 2a > bar
				$ hg commit -m "branch a"

				Creating branch b:

				$ cd ..
				$ cd b
				$ echo 2b > foo
				$ echo 2b > baz
				$ hg commit -m "branch b"

				We shouldn't have anything but n state here:

				$ hg debugstate --nodates \| grep -v "^n"
				[1]

				Merging:

				$ hg pull ../a
				pulling from ../a
				searching for changes
				adding changesets
				adding manifests
				adding file changes
				added 1 changesets with 2 changes to 2 files (+1 heads)
				(run 'hg heads' to see heads, 'hg merge' to merge)

				$ hg merge -v
				resolving manifests
				getting bar
				merging foo
				merging for foo
				1 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ echo 2m > foo
				$ echo 2b > baz
				$ echo new > quux

				$ hg ci -m "merge"

				main: we should have a merge here:

				$ hg debugindex --changelog
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 73 ..... 0 cdca01651b96 000000000000 000000000000 (re)
				1 73 68 ..... 1 f6718a9cb7f3 cdca01651b96 000000000000 (re)
				2 141 68 ..... 2 bdd988058d16 cdca01651b96 000000000000 (re)
				3 209 66 ..... 3 d8a521142a3c f6718a9cb7f3 bdd988058d16 (re)

				log should show foo and quux changed:

				$ hg log -v -r tip
				changeset: 3:d8a521142a3c
				tag: tip
				parent: 1:f6718a9cb7f3
				parent: 2:bdd988058d16
				user: test
				date: Thu Jan 01 00:00:00 1970 +0000
				files: foo quux
				description:
				merge



				foo: we should have a merge here:

				$ hg debugindex foo
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re)
				2 7 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re)
				3 11 4 ..... 3 aa27919ee430 2ffeddde1b65 33d1fb69067a (re)

				bar: we should not have a merge here:

				$ hg debugindex bar
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re)

				baz: we should not have a merge here:

				$ hg debugindex baz
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re)

				quux: we should not have a merge here:

				$ hg debugindex quux
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 5 ..... 3 6128c0f33108 b8e02f643373 000000000000 (re)

				Manifest entries should match tips of all files:

				$ hg manifest --debug
				33d1fb69067a0139622a3fa3b7ba1cdb1367972e 644 bar
				2ffeddde1b65b4827f6746174a145474129fa2ce 644 baz
				aa27919ee4303cfd575e1fb932dd64d75aa08be4 644 foo
				6128c0f33108e8cfbb4e0824d13ae48b466d7280 644 quux

				Everything should be clean now:

				$ hg status

				$ hg verify
				checking changesets
				checking manifests
				crosschecking files in changesets and manifests
				checking files
				4 files, 4 changesets, 10 total revisions

				$ cd ..