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dispatch: protect against malicious 'hg serve --stdio' invocations (sec)...
dispatch: protect against malicious 'hg serve --stdio' invocations (sec) Some shared-ssh installations assume that 'hg serve --stdio' is a safe command to run for minimally trusted users. Unfortunately, the messy implementation of argument parsing here meant that trying to access a repo named '--debugger' would give the user a pdb prompt, thereby sidestepping any hoped-for sandboxing. Serving repositories over HTTP(S) is unaffected. We're not currently hardening any subcommands other than 'serve'. If your service exposes other commands to users with arbitrary repository names, it is imperative that you defend against repository names of '--debugger' and anything starting with '--config'. The read-only mode of hg-ssh stopped working because it provided its hook configuration to "hg serve --stdio" via --config parameter. This is banned for security reasons now. This patch switches it to directly call ui.setconfig(). If your custom hosting infrastructure relies on passing --config to "hg serve --stdio", you'll need to find a different way to get that configuration into Mercurial, either by using ui.setconfig() as hg-ssh does in this patch, or by placing an hgrc file someplace where Mercurial will read it. mitrandir@fb.com provided some extra fixes for the dispatch code and for hg-ssh in places that I overlooked.

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r30332:318a24b5 default
r32050:77eaf953 4.1.3 stable
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test-generaldelta.t
161 lines | 5.9 KiB | text/troff | Tads3Lexer
Check whether size of generaldelta revlog is not bigger than its
regular equivalent. Test would fail if generaldelta was naive
implementation of parentdelta: third manifest revision would be fully
inserted due to big distance from its paren revision (zero).
$ hg init repo --config format.generaldelta=no --config format.usegeneraldelta=no
$ cd repo
$ echo foo > foo
$ echo bar > bar
$ echo baz > baz
$ hg commit -q -Am boo
$ hg clone --pull . ../gdrepo -q --config format.generaldelta=yes
$ for r in 1 2 3; do
> echo $r > foo
> hg commit -q -m $r
> hg up -q -r 0
> hg pull . -q -r $r -R ../gdrepo
> done
$ cd ..
>>> from __future__ import print_function
>>> import os
>>> regsize = os.stat("repo/.hg/store/00manifest.i").st_size
>>> gdsize = os.stat("gdrepo/.hg/store/00manifest.i").st_size
>>> if regsize < gdsize:
... print('generaldata increased size of manifest')
Verify rev reordering doesnt create invalid bundles (issue4462)
This requires a commit tree that when pulled will reorder manifest revs such
that the second manifest to create a file rev will be ordered before the first
manifest to create that file rev. We also need to do a partial pull to ensure
reordering happens. At the end we verify the linkrev points at the earliest
commit.
$ hg init server --config format.generaldelta=True
$ cd server
$ touch a
$ hg commit -Aqm a
$ echo x > x
$ echo y > y
$ hg commit -Aqm xy
$ hg up -q '.^'
$ echo x > x
$ echo z > z
$ hg commit -Aqm xz
$ hg up -q 1
$ echo b > b
$ hg commit -Aqm b
$ hg merge -q 2
$ hg commit -Aqm merge
$ echo c > c
$ hg commit -Aqm c
$ hg log -G -T '{rev} {shortest(node)} {desc}'
@ 5 ebb8 c
|
o 4 baf7 merge
|\
| o 3 a129 b
| |
o | 2 958c xz
| |
| o 1 f00c xy
|/
o 0 3903 a
$ cd ..
$ hg init client --config format.generaldelta=false --config format.usegeneraldelta=false
$ cd client
$ hg pull -q ../server -r 4
$ hg debugindex x
rev offset length base linkrev nodeid p1 p2
0 0 3 0 1 1406e7411862 000000000000 000000000000
$ cd ..
Test "usegeneraldelta" config
(repo are general delta, but incoming bundle are not re-deltafied)
delta coming from the server base delta server are not recompressed.
(also include the aggressive version for comparison)
$ hg clone repo --pull --config format.usegeneraldelta=1 usegd
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 6 changes to 3 files (+2 heads)
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg clone repo --pull --config format.generaldelta=1 full
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 6 changes to 3 files (+2 heads)
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R repo debugindex -m
rev offset length base linkrev nodeid p1 p2
0 0 104 0 0 cef96823c800 000000000000 000000000000
1 104 57 0 1 58ab9a8d541d cef96823c800 000000000000
2 161 57 0 2 134fdc6fd680 cef96823c800 000000000000
3 218 104 3 3 723508934dad cef96823c800 000000000000
$ hg -R usegd debugindex -m
rev offset length delta linkrev nodeid p1 p2
0 0 104 -1 0 cef96823c800 000000000000 000000000000
1 104 57 0 1 58ab9a8d541d cef96823c800 000000000000
2 161 57 1 2 134fdc6fd680 cef96823c800 000000000000
3 218 57 0 3 723508934dad cef96823c800 000000000000
$ hg -R full debugindex -m
rev offset length delta linkrev nodeid p1 p2
0 0 104 -1 0 cef96823c800 000000000000 000000000000
1 104 57 0 1 58ab9a8d541d cef96823c800 000000000000
2 161 57 0 2 134fdc6fd680 cef96823c800 000000000000
3 218 57 0 3 723508934dad cef96823c800 000000000000
Test format.aggressivemergedeltas
$ hg init --config format.generaldelta=1 aggressive
$ cd aggressive
$ cat << EOF >> .hg/hgrc
> [format]
> generaldelta = 1
> EOF
$ touch a b c d e
$ hg commit -Aqm side1
$ hg up -q null
$ touch x y
$ hg commit -Aqm side2
- Verify non-aggressive merge uses p1 (commit 1) as delta parent
$ hg merge -q 0
$ hg commit -q -m merge
$ hg debugindex -m
rev offset length delta linkrev nodeid p1 p2
0 0 59 -1 0 8dde941edb6e 000000000000 000000000000
1 59 61 0 1 315c023f341d 000000000000 000000000000
2 120 65 1 2 2ab389a983eb 315c023f341d 8dde941edb6e
$ hg strip -q -r . --config extensions.strip=
- Verify aggressive merge uses p2 (commit 0) as delta parent
$ hg up -q -C 1
$ hg merge -q 0
$ hg commit -q -m merge --config format.aggressivemergedeltas=True
$ hg debugindex -m
rev offset length delta linkrev nodeid p1 p2
0 0 59 -1 0 8dde941edb6e 000000000000 000000000000
1 59 61 0 1 315c023f341d 000000000000 000000000000
2 120 62 0 2 2ab389a983eb 315c023f341d 8dde941edb6e
Test that strip bundle use bundle2
$ hg --config extensions.strip= strip .
0 files updated, 0 files merged, 5 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/aggressive/.hg/strip-backup/1c5d4dc9a8b8-6c68e60c-backup.hg (glob)
$ hg debugbundle .hg/strip-backup/*
Stream params: sortdict([('Compression', 'BZ')])
changegroup -- "sortdict([('version', '02'), ('nbchanges', '1')])"
1c5d4dc9a8b8d6e1750966d343e94db665e7a1e9
$ cd ..