Mercurial > hg-stable
view tests/test-conflict.t @ 29560:303e9300772a
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.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Wed, 13 Jul 2016 21:35:54 -0700 |
parents | c3e9269d9602 |
children | 940c05b25b07 |
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$ hg init $ cat << EOF > a > Small Mathematical Series. > One > Two > Three > Four > Five > Hop we are done. > EOF $ hg add a $ hg commit -m ancestor $ cat << EOF > a > Small Mathematical Series. > 1 > 2 > 3 > 4 > 5 > Hop we are done. > EOF $ hg commit -m branch1 $ hg co 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat << EOF > a > Small Mathematical Series. > 1 > 2 > 3 > 6 > 8 > Hop we are done. > EOF $ hg commit -m branch2 created new head $ hg merge 1 merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg id 618808747361+c0c68e4fe667+ tip $ cat a Small Mathematical Series. 1 2 3 <<<<<<< local: 618808747361 - test: branch2 6 8 ======= 4 5 >>>>>>> other: c0c68e4fe667 - test: branch1 Hop we are done. $ hg status M a ? a.orig Verify custom conflict markers $ hg up -q --clean . $ printf "\n[ui]\nmergemarkertemplate={author} {rev}\n" >> .hg/hgrc $ hg merge 1 merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ cat a Small Mathematical Series. 1 2 3 <<<<<<< local: test 2 6 8 ======= 4 5 >>>>>>> other: test 1 Hop we are done. Verify line splitting of custom conflict marker which causes multiple lines $ hg up -q --clean . $ cat >> .hg/hgrc <<EOF > [ui] > mergemarkertemplate={author} {rev}\nfoo\nbar\nbaz > EOF $ hg -q merge 1 warning: conflicts while merging a! (edit, then use 'hg resolve --mark') [1] $ cat a Small Mathematical Series. 1 2 3 <<<<<<< local: test 2 6 8 ======= 4 5 >>>>>>> other: test 1 Hop we are done. Verify line trimming of custom conflict marker using multi-byte characters $ hg up -q --clean . $ python <<EOF > fp = open('logfile', 'w') > fp.write('12345678901234567890123456789012345678901234567890' + > '1234567890') # there are 5 more columns for 80 columns > > # 2 x 4 = 8 columns, but 3 x 4 = 12 bytes > fp.write(u'\u3042\u3044\u3046\u3048'.encode('utf-8')) > > fp.close() > EOF $ hg add logfile $ hg --encoding utf-8 commit --logfile logfile $ cat >> .hg/hgrc <<EOF > [ui] > mergemarkertemplate={desc|firstline} > EOF $ hg -q --encoding utf-8 merge 1 warning: conflicts while merging a! (edit, then use 'hg resolve --mark') [1] $ cat a Small Mathematical Series. 1 2 3 <<<<<<< local: 123456789012345678901234567890123456789012345678901234567890\xe3\x81\x82... (esc) 6 8 ======= 4 5 >>>>>>> other: branch1 Hop we are done. Verify basic conflict markers $ hg up -q --clean 2 $ printf "\n[ui]\nmergemarkers=basic\n" >> .hg/hgrc $ hg merge 1 merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ cat a Small Mathematical Series. 1 2 3 <<<<<<< local 6 8 ======= 4 5 >>>>>>> other Hop we are done. internal:merge3 $ hg up -q --clean . $ hg merge 1 --tool internal:merge3 merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ cat a Small Mathematical Series. <<<<<<< local 1 2 3 6 8 ||||||| base One Two Three Four Five ======= 1 2 3 4 5 >>>>>>> other Hop we are done. Add some unconflicting changes on each head, to make sure we really are merging, unlike :local and :other $ hg up -C 2 files updated, 0 files merged, 0 files removed, 0 files unresolved 1 other heads for branch "default" $ printf "\n\nEnd of file\n" >> a $ hg ci -m "Add some stuff at the end" $ hg up -r 1 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ printf "Start of file\n\n\n" > tmp $ cat a >> tmp $ mv tmp a $ hg ci -m "Add some stuff at the beginning" Now test :merge-other and :merge-local $ hg merge merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') 1 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg resolve --tool :merge-other a merging a (no more unresolved files) $ cat a Start of file Small Mathematical Series. 1 2 3 6 8 Hop we are done. End of file $ hg up -C 1 files updated, 0 files merged, 1 files removed, 0 files unresolved 1 other heads for branch "default" $ hg merge --tool :merge-local merging a 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat a Start of file Small Mathematical Series. 1 2 3 4 5 Hop we are done. End of file