upstream/mercurial-mirror Files · tests/test-unbundlehash.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.

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      #require killdaemons

      Test wire protocol unbundle with hashed heads (capability: unbundlehash)

        $ cat << EOF >> $HGRCPATH

        > [experimental]

        > # This tests is intended for bundle1 only.

        > # bundle2 carries the head information inside the bundle itself and

        > # always uses 'force' as the heads value.

        > bundle2-exp = False

        > EOF

      Create a remote repository.

        $ hg init remote

        $ hg serve -R remote --config web.push_ssl=False --config web.allow_push=* -p $HGPORT -d --pid-file=hg1.pid -E error.log -A access.log

        $ cat hg1.pid >> $DAEMON_PIDS

      Clone the repository and push a change.

        $ hg clone http://localhost:$HGPORT/ local

        no changes found

        updating to branch default

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

        $ touch local/README

        $ hg ci -R local -A -m hoge

        adding README

        $ hg push -R local

        pushing to http://localhost:$HGPORT/

        searching for changes

        remote: adding changesets

        remote: adding manifests

        remote: adding file changes

        remote: added 1 changesets with 1 changes to 1 files

      Ensure hashed heads format is used.

      The hash here is always the same since the remote repository only has the null head.

        $ cat access.log | grep unbundle

        * - - [*] "POST /?cmd=unbundle HTTP/1.1" 200 - x-hgarg-1:heads=686173686564+6768033e216468247bd031a0a2d9876d79818f8f* (glob)

      Explicitly kill daemons to let the test exit on Windows

        $ killdaemons.py

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				#require killdaemons

				Test wire protocol unbundle with hashed heads (capability: unbundlehash)

				$ cat << EOF >> $HGRCPATH
				> [experimental]
				> # This tests is intended for bundle1 only.
				> # bundle2 carries the head information inside the bundle itself and
				> # always uses 'force' as the heads value.
				> bundle2-exp = False
				> EOF

				Create a remote repository.

				$ hg init remote
				$ hg serve -R remote --config web.push_ssl=False --config web.allow_push=* -p $HGPORT -d --pid-file=hg1.pid -E error.log -A access.log
				$ cat hg1.pid >> $DAEMON_PIDS

				Clone the repository and push a change.

				$ hg clone http://localhost:$HGPORT/ local
				no changes found
				updating to branch default
				0 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ touch local/README
				$ hg ci -R local -A -m hoge
				adding README
				$ hg push -R local
				pushing to http://localhost:$HGPORT/
				searching for changes
				remote: adding changesets
				remote: adding manifests
				remote: adding file changes
				remote: added 1 changesets with 1 changes to 1 files

				Ensure hashed heads format is used.
				The hash here is always the same since the remote repository only has the null head.

				$ cat access.log \| grep unbundle
				* - - [] "POST /?cmd=unbundle HTTP/1.1" 200 - x-hgarg-1:heads=686173686564+6768033e216468247bd031a0a2d9876d79818f8f (glob)

				Explicitly kill daemons to let the test exit on Windows

				$ killdaemons.py