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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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test-convert-svn-branches.t
128 lines | 3.1 KiB | text/troff | Tads3Lexer
/ tests / test-convert-svn-branches.t
#require svn svn-bindings
$ cat >> $HGRCPATH <<EOF
> [extensions]
> convert =
> EOF
$ svnadmin create svn-repo
$ svnadmin load -q svn-repo < "$TESTDIR/svn/branches.svndump"
Convert trunk and branches
$ cat > branchmap <<EOF
> old3 newbranch
>
>
> EOF
$ hg convert --branchmap=branchmap --datesort -r 10 svn-repo A-hg
initializing destination A-hg repository
scanning source...
sorting...
converting...
10 init projA
9 hello
8 branch trunk, remove c and dir
7 change a
6 change b
5 move and update c
4 move and update c
3 change b again
2 move to old2
1 move back to old
0 last change to a
Test template keywords
$ hg -R A-hg log --template '{rev} {svnuuid}{svnpath}@{svnrev}\n'
10 644ede6c-2b81-4367-9dc8-d786514f2cde/trunk@10
9 644ede6c-2b81-4367-9dc8-d786514f2cde/branches/old@9
8 644ede6c-2b81-4367-9dc8-d786514f2cde/branches/old2@8
7 644ede6c-2b81-4367-9dc8-d786514f2cde/branches/old@7
6 644ede6c-2b81-4367-9dc8-d786514f2cde/trunk@6
5 644ede6c-2b81-4367-9dc8-d786514f2cde/branches/old@6
4 644ede6c-2b81-4367-9dc8-d786514f2cde/branches/old@5
3 644ede6c-2b81-4367-9dc8-d786514f2cde/trunk@4
2 644ede6c-2b81-4367-9dc8-d786514f2cde/branches/old@3
1 644ede6c-2b81-4367-9dc8-d786514f2cde/trunk@2
0 644ede6c-2b81-4367-9dc8-d786514f2cde/trunk@1
Convert again
$ hg convert --branchmap=branchmap --datesort svn-repo A-hg
scanning source...
sorting...
converting...
0 branch trunk@1 into old3
$ cd A-hg
$ hg log -G --template 'branch={branches} {rev} {desc|firstline} files: {files}\n'
o branch=newbranch 11 branch trunk@1 into old3 files:
|
| o branch= 10 last change to a files: a
| |
| | o branch=old 9 move back to old files:
| | |
| | o branch=old2 8 move to old2 files:
| | |
| | o branch=old 7 change b again files: b
| | |
| o | branch= 6 move and update c files: b
| | |
| | o branch=old 5 move and update c files: c
| | |
| | o branch=old 4 change b files: b
| | |
| o | branch= 3 change a files: a
| | |
| | o branch=old 2 branch trunk, remove c and dir files: c
| |/
| o branch= 1 hello files: a b c dir/e
|/
o branch= 0 init projA files:
$ hg branches
newbranch 11:a6d7cc050ad1
default 10:6e2b33404495
old 9:93c4b0f99529
old2 8:b52884d7bead (inactive)
$ hg tags -q
tip
$ cd ..
Test hg failing to call itself
$ HG=foobar hg convert svn-repo B-hg 2>&1 | grep abort
abort: Mercurial failed to run itself, check hg executable is in PATH
Convert 'trunk' to branch other than 'default'
$ cat > branchmap <<EOF
> default hgtrunk
>
>
> EOF
$ hg convert --branchmap=branchmap --datesort -r 10 svn-repo C-hg
initializing destination C-hg repository
scanning source...
sorting...
converting...
10 init projA
9 hello
8 branch trunk, remove c and dir
7 change a
6 change b
5 move and update c
4 move and update c
3 change b again
2 move to old2
1 move back to old
0 last change to a
$ cd C-hg
$ hg branches --template '{branch}\n'
hgtrunk
old
old2
$ cd ..