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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-addremove-similar.t
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/ tests / test-addremove-similar.t
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Martin Geisler
tests: unify test-addremove-similar
 r11851 $ hg init rep; cd rep
$ touch empty-file
timeless
tests: test-addremove-similar.t use print() for py3
 r29174 $ $PYTHON -c 'for x in range(10000): print(x)' > large-file
Martin Geisler
tests: unify test-addremove-similar
 r11851
$ hg addremove
adding empty-file
adding large-file
$ hg commit -m A
$ rm large-file empty-file
timeless
tests: test-addremove-similar.t use print() for py3
 r29174 $ $PYTHON -c 'for x in range(10,10000): print(x)' > another-file
Martin Geisler
tests: unify test-addremove-similar
 r11851
$ hg addremove -s50
adding another-file
removing empty-file
removing large-file
recording removal of large-file as rename to another-file (99% similar)
$ hg commit -m B
comparing two empty files caused ZeroDivisionError in the past
$ hg update -C 0
2 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ rm empty-file
$ touch another-empty-file
$ hg addremove -s50
adding another-empty-file
removing empty-file
$ cd ..
$ hg init rep2; cd rep2
timeless
tests: test-addremove-similar.t use print() for py3
 r29174 $ $PYTHON -c 'for x in range(10000): print(x)' > large-file
$ $PYTHON -c 'for x in range(50): print(x)' > tiny-file
Martin Geisler
tests: unify test-addremove-similar
 r11851
$ hg addremove
adding large-file
adding tiny-file
$ hg commit -m A
timeless
tests: test-addremove-similar.t use print() for py3
 r29174 $ $PYTHON -c 'for x in range(70): print(x)' > small-file
Martin Geisler
tests: unify test-addremove-similar
 r11851 $ rm tiny-file
$ rm large-file
$ hg addremove -s50
removing large-file
adding small-file
removing tiny-file
recording removal of tiny-file as rename to small-file (82% similar)
$ hg commit -m B
should all fail
$ hg addremove -s foo
abort: similarity must be a number
Matt Mackall
tests: add exit codes to unified tests
 r12316 [255]
Martin Geisler
tests: unify test-addremove-similar
 r11851 $ hg addremove -s -1
abort: similarity must be between 0 and 100
Matt Mackall
tests: add exit codes to unified tests
 r12316 [255]
Martin Geisler
tests: unify test-addremove-similar
 r11851 $ hg addremove -s 1e6
abort: similarity must be between 0 and 100
Matt Mackall
tests: add exit codes to unified tests
 r12316 [255]
Martin Geisler
tests: unify test-addremove-similar
 r11851
$ cd ..
Pierre-Yves David
error: get Abort from 'error' instead of 'util'...
 r26587 Issue1527: repeated addremove causes Abort
Martin Geisler
tests: unify test-addremove-similar
 r11851
$ hg init rep3; cd rep3
$ mkdir d
$ echo a > d/a
$ hg add d/a
$ hg commit -m 1
$ mv d/a d/b
$ hg addremove -s80
removing d/a
adding d/b
Mads Kiilerich
tests: make (glob) on windows accept \ instead of /...
 r15447 recording removal of d/a as rename to d/b (100% similar) (glob)
Martin Geisler
tests: unify test-addremove-similar
 r11851 $ hg debugstate
r 0 0 1970-01-01 00:00:00 d/a
a 0 -1 unset d/b
copy: d/a -> d/b
$ mv d/b c
no copies found here (since the target isn't in d
$ hg addremove -s80 d
Matt Harbison
addremove: restore the relative path printing when files are named...
 r23481 removing d/b (glob)
Martin Geisler
tests: unify test-addremove-similar
 r11851
copies here
$ hg addremove -s80
adding c
Mads Kiilerich
tests: make (glob) on windows accept \ instead of /...
 r15447 recording removal of d/a as rename to c (100% similar) (glob)
Mads Kiilerich
tests: add missing trailing 'cd ..'...
 r16913
$ cd ..