upstream/mercurial-mirror Files · tests/test-diff-binary-file.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.

Mateusz Kwapich - - Load All Authors

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             test-diff-binary-file.t
        
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        $ hg init a

        $ cd a

        $ cp "$TESTDIR/binfile.bin" .

        $ hg add binfile.bin

        $ hg ci -m 'add binfile.bin'

        $ echo >> binfile.bin

        $ hg ci -m 'change binfile.bin'

        $ hg revert -r 0 binfile.bin

        $ hg ci -m 'revert binfile.bin'

        $ hg cp binfile.bin nonbinfile

        $ echo text > nonbinfile

        $ hg ci -m 'make non-binary copy of binary file'

        $ hg diff --nodates -r 0 -r 1

        diff -r 48b371597640 -r acea2ab458c8 binfile.bin

        Binary file binfile.bin has changed

        $ hg diff --nodates -r 0 -r 2

        $ hg diff --git -r 0 -r 1

        diff --git a/binfile.bin b/binfile.bin

        index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356

        GIT binary patch

        literal 594

        zc$@)J0<HatP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU

        z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd

        zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M

        z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT

        zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po

        ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<;

        zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V

        z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W-

        zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U;

        z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K

        zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#=

        gQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf3JwksH2?qr

        $ hg diff --git -r 0 -r 2

        $ hg diff --config diff.nobinary=True --git -r 0 -r 1

        diff --git a/binfile.bin b/binfile.bin

        Binary file binfile.bin has changed

        $ HGPLAIN=1 hg diff --config diff.nobinary=True --git -r 0 -r 1

        diff --git a/binfile.bin b/binfile.bin

        index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356

        GIT binary patch

        literal 594

        zc$@)J0<HatP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU

        z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd

        zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M

        z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT

        zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po

        ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<;

        zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V

        z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W-

        zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U;

        z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K

        zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#=

        gQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf3JwksH2?qr

        $ hg diff --git -r 2 -r 3

        diff --git a/binfile.bin b/nonbinfile

        copy from binfile.bin

        copy to nonbinfile

        index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..8e27be7d6154a1f68ea9160ef0e18691d20560dc

        GIT binary patch

        literal 5

        Mc$_OqttjCF00uV!&;S4c

        $ cd ..

	Site-wide shortcuts
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	Repositories
g s	Goto summary page
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t s	Toggle sidebar on some pages

				$ hg init a
				$ cd a
				$ cp "$TESTDIR/binfile.bin" .
				$ hg add binfile.bin
				$ hg ci -m 'add binfile.bin'

				$ echo >> binfile.bin
				$ hg ci -m 'change binfile.bin'

				$ hg revert -r 0 binfile.bin
				$ hg ci -m 'revert binfile.bin'
				$ hg cp binfile.bin nonbinfile
				$ echo text > nonbinfile
				$ hg ci -m 'make non-binary copy of binary file'

				$ hg diff --nodates -r 0 -r 1
				diff -r 48b371597640 -r acea2ab458c8 binfile.bin
				Binary file binfile.bin has changed

				$ hg diff --nodates -r 0 -r 2

				$ hg diff --git -r 0 -r 1
				diff --git a/binfile.bin b/binfile.bin
				index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356
				GIT binary patch
				literal 594
				zc$@)J0<HatP)<h;3K\|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU
				z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd
				zX$nnYLt$-$V!?uy+1V%`z&Eh=ah\|duER<4\|QWhju3gb^nF*8iYobxWG-qqXl=2~5M
				zIoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsHyYzpvLT
				zLdY<T=ks\|woh-`&01!ej#(xbV1f\|pI=%;d-%FE*X#ZH`4I%6SS+$EJDE&ct=8po
				ziN#{?_j\|kD%Cd\|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^\|Fn^Y?Gdc6<;
				zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V
				z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W-
				zaR2~ECX?B2w+zELozC0s*6Z~\|QG^f{3I#<`?)Q7U-JZ\|q5W;9Q8i_=pBuSzunx=U;
				z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K
				zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#=
				gQItJW-{SoTm)8\|5##k\|m00000NkvXXu0mjf3JwksH2?qr


				$ hg diff --git -r 0 -r 2

				$ hg diff --config diff.nobinary=True --git -r 0 -r 1
				diff --git a/binfile.bin b/binfile.bin
				Binary file binfile.bin has changed

				$ HGPLAIN=1 hg diff --config diff.nobinary=True --git -r 0 -r 1
				diff --git a/binfile.bin b/binfile.bin
				index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356
				GIT binary patch
				literal 594
				zc$@)J0<HatP)<h;3K\|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU
				z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd
				zX$nnYLt$-$V!?uy+1V%`z&Eh=ah\|duER<4\|QWhju3gb^nF*8iYobxWG-qqXl=2~5M
				zIoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsHyYzpvLT
				zLdY<T=ks\|woh-`&01!ej#(xbV1f\|pI=%;d-%FE*X#ZH`4I%6SS+$EJDE&ct=8po
				ziN#{?_j\|kD%Cd\|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^\|Fn^Y?Gdc6<;
				zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V
				z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W-
				zaR2~ECX?B2w+zELozC0s*6Z~\|QG^f{3I#<`?)Q7U-JZ\|q5W;9Q8i_=pBuSzunx=U;
				z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K
				zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#=
				gQItJW-{SoTm)8\|5##k\|m00000NkvXXu0mjf3JwksH2?qr



				$ hg diff --git -r 2 -r 3
				diff --git a/binfile.bin b/nonbinfile
				copy from binfile.bin
				copy to nonbinfile
				index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..8e27be7d6154a1f68ea9160ef0e18691d20560dc
				GIT binary patch
				literal 5
				Mc$_OqttjCF00uV!&;S4c


				$ cd ..