rhg: desambiguate status without decompressing filelog if possible
When status is unsure based on `stat()` and the dirstate if a file is clean
or modified, we need to compare it against the filelog.
This comparison can skip looking at contents if the lengths differ.
This changeset optimize this further to deduce what we can about the length
if the filelog without decompressing it or resolving deltas.
Differential Revision: https://phab.mercurial-scm.org/D11965
#require no-reposimplestore
#testcases revlogv1 revlogv2
#if revlogv2
$ cat >> $HGRCPATH <<EOF
> [experimental]
> revlogv2=enable-unstable-format-and-corrupt-my-data
> EOF
#endif
$ cat >> $HGRCPATH <<EOF
> [extensions]
> censor=
> EOF
$ cp $HGRCPATH $HGRCPATH.orig
Create repo with unimpeachable content
$ hg init r
$ cd r
$ echo 'Initially untainted file' > target
$ echo 'Normal file here' > bystander
$ hg add target bystander
$ hg ci -m init
Clone repo so we can test pull later
$ cd ..
$ hg clone r rpull
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd r
Introduce content which will ultimately require censorship. Name the first
censored node C1, second C2, and so on
$ echo 'Tainted file' > target
$ echo 'Passwords: hunter2' >> target
$ hg ci -m taint target
$ C1=`hg id --debug -i`
$ echo 'hunter3' >> target
$ echo 'Normal file v2' > bystander
$ hg ci -m moretaint target bystander
$ C2=`hg id --debug -i`
Add a new sanitized versions to correct our mistake. Name the first head H1,
the second head H2, and so on
$ echo 'Tainted file is now sanitized' > target
$ hg ci -m sanitized target
$ H1=`hg id --debug -i`
$ hg update -r $C2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo 'Tainted file now super sanitized' > target
$ hg ci -m 'super sanitized' target
created new head
$ H2=`hg id --debug -i`
Verify target contents before censorship at each revision
$ hg cat -r $H1 target | head -n 10
Tainted file is now sanitized
$ hg cat -r $H2 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
Tainted file
Passwords: hunter2
hunter3
$ hg cat -r $C1 target | head -n 10
Tainted file
Passwords: hunter2
$ hg cat -r 0 target | head -n 10
Initially untainted file
Censor revision with 2 offenses
(this also tests file pattern matching: path relative to cwd case)
$ mkdir -p foo/bar/baz
$ hg --cwd foo/bar/baz censor -r $C2 -t "remove password" ../../../target
$ hg cat -r $H1 target | head -n 10
Tainted file is now sanitized
$ hg cat -r $H2 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
$ hg cat -r $C1 target | head -n 10
Tainted file
Passwords: hunter2
$ hg cat -r 0 target | head -n 10
Initially untainted file
Censor revision with 1 offense
(this also tests file pattern matching: with 'path:' scheme)
$ hg --cwd foo/bar/baz censor -r $C1 path:target
$ hg cat -r $H1 target | head -n 10
Tainted file is now sanitized
$ hg cat -r $H2 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
$ hg cat -r $C1 target | head -n 10
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
$ hg cat -r 0 target | head -n 10
Initially untainted file
Can only checkout target at uncensored revisions, -X is workaround for --all
$ hg revert -r $C2 target | head -n 10
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
$ hg revert -r $C1 target | head -n 10
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
$ hg revert -r $C1 --all
reverting bystander
reverting target
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
[255]
$ hg revert -r $C1 --all -X target
$ cat target | head -n 10
Tainted file now super sanitized
$ hg revert -r 0 --all
reverting target
$ cat target | head -n 10
Initially untainted file
$ hg revert -r $H2 --all
reverting bystander
reverting target
$ cat target | head -n 10
Tainted file now super sanitized
Uncensored file can be viewed at any revision
$ hg cat -r $H1 bystander | head -n 10
Normal file v2
$ hg cat -r $C2 bystander | head -n 10
Normal file v2
$ hg cat -r $C1 bystander | head -n 10
Normal file here
$ hg cat -r 0 bystander | head -n 10
Normal file here
Can update to children of censored revision
$ hg update -r $H1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file is now sanitized
$ hg update -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file now super sanitized
Set censor policy to abort in trusted $HGRC so hg verify fails
$ cp $HGRCPATH.orig $HGRCPATH
$ cat >> $HGRCPATH <<EOF
> [censor]
> policy = abort
> EOF
Repo fails verification due to censorship
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
target@1: censored file data
target@2: censored file data
checked 5 changesets with 7 changes to 2 files
2 integrity errors encountered!
(first damaged changeset appears to be 1)
[1]
Cannot update to revision with censored data
$ hg update -r $C2
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
[255]
$ hg update -r $C1
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
[255]
$ hg update -r 0
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg update -r $H2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Set censor policy to ignore in trusted $HGRC so hg verify passes
$ cp $HGRCPATH.orig $HGRCPATH
$ cat >> $HGRCPATH <<EOF
> [censor]
> policy = ignore
> EOF
Repo passes verification with warnings with explicit config
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 5 changesets with 7 changes to 2 files
May update to revision with censored data with explicit config
$ hg update -r $C2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
$ hg update -r $C1
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
$ hg update -r 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Initially untainted file
$ hg update -r $H2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file now super sanitized
Can merge in revision with censored data. Test requires one branch of history
with the file censored, but we can't censor at a head, so advance H1.
$ hg update -r $H1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ C3=$H1
$ echo 'advanced head H1' > target
$ hg ci -m 'advance head H1' target
$ H1=`hg id --debug -i`
$ hg censor -r $C3 target
$ hg update -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge -r $C3
merging target
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
Revisions present in repository heads may not be censored
$ hg update -C -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg censor -r $H2 target
abort: cannot censor file in heads (78a8fc215e79)
(clean/delete and commit first)
[255]
$ echo 'twiddling thumbs' > bystander
$ hg ci -m 'bystander commit'
$ H2=`hg id --debug -i`
$ hg censor -r "$H2^" target
abort: cannot censor file in heads (efbe78065929)
(clean/delete and commit first)
[255]
Cannot censor working directory
$ echo 'seriously no passwords' > target
$ hg ci -m 'extend second head arbitrarily' target
$ H2=`hg id --debug -i`
$ hg update -r "$H2^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg censor -r . target
abort: cannot censor working directory
(clean/delete/update first)
[255]
$ hg update -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Can re-add file after being deleted + censored
$ C4=$H2
$ hg rm target
$ hg ci -m 'delete target so it may be censored'
$ H2=`hg id --debug -i`
$ hg censor -r $C4 target
$ hg cat -r $C4 target | head -n 10
$ hg cat -r "$H2^^" target | head -n 10
Tainted file now super sanitized
$ echo 'fresh start' > target
$ hg add target
$ hg ci -m reincarnated target
$ H2=`hg id --debug -i`
$ hg cat -r $H2 target | head -n 10
fresh start
$ hg cat -r "$H2^" target | head -n 10
target: no such file in rev 452ec1762369
$ hg cat -r $C4 target | head -n 10
$ hg cat -r "$H2^^^" target | head -n 10
Tainted file now super sanitized
Can censor after revlog has expanded to no longer permit inline storage
$ for x in `"$PYTHON" $TESTDIR/seq.py 0 50000`
> do
> echo "Password: hunter$x" >> target
> done
$ hg ci -m 'add 100k passwords'
$ H2=`hg id --debug -i`
$ C5=$H2
$ hg revert -r "$H2^" target
$ hg ci -m 'cleaned 100k passwords'
$ H2=`hg id --debug -i`
$ hg censor -r $C5 target
$ hg cat -r $C5 target | head -n 10
$ hg cat -r $H2 target | head -n 10
fresh start
Repo with censored nodes can be cloned and cloned nodes are censored
$ cd ..
$ hg clone r rclone
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd rclone
$ hg cat -r $H1 target | head -n 10
advanced head H1
$ hg cat -r $H2~5 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
$ hg cat -r $C1 target | head -n 10
$ hg cat -r 0 target | head -n 10
Initially untainted file
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 12 changesets with 13 changes to 2 files
Repo cloned before tainted content introduced can pull censored nodes
$ cd ../rpull
$ hg cat -r tip target | head -n 10
Initially untainted file
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 1 changesets with 2 changes to 2 files
$ hg pull -r $H1 -r $H2
pulling from $TESTTMP/r
searching for changes
adding changesets
adding manifests
adding file changes
added 11 changesets with 11 changes to 2 files (+1 heads)
new changesets 186fb27560c3:683e4645fded
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg update 4
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file now super sanitized
$ hg cat -r $H1 target | head -n 10
advanced head H1
$ hg cat -r $H2~5 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
$ hg cat -r $C1 target | head -n 10
$ hg cat -r 0 target | head -n 10
Initially untainted file
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 12 changesets with 13 changes to 2 files
Censored nodes can be pushed if they censor previously unexchanged nodes
$ echo 'Passwords: hunter2hunter2' > target
$ hg ci -m 're-add password from clone' target
created new head
$ H3=`hg id --debug -i`
$ REV=$H3
$ echo 'Re-sanitized; nothing to see here' > target
$ hg ci -m 're-sanitized' target
$ H2=`hg id --debug -i`
$ CLEANREV=$H2
$ hg cat -r $REV target | head -n 10
Passwords: hunter2hunter2
$ hg censor -r $REV target
$ hg cat -r $REV target | head -n 10
$ hg cat -r $CLEANREV target | head -n 10
Re-sanitized; nothing to see here
$ hg push -f -r $H2
pushing to $TESTTMP/r
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files (+1 heads)
$ cd ../r
$ hg cat -r $REV target | head -n 10
$ hg cat -r $CLEANREV target | head -n 10
Re-sanitized; nothing to see here
$ hg update $CLEANREV
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Re-sanitized; nothing to see here
Censored nodes can be bundled up and unbundled in another repo
$ hg bundle --base 0 ../pwbundle
13 changesets found
$ cd ../rclone
$ hg unbundle ../pwbundle
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files (+1 heads)
new changesets 075be80ac777:dcbaf17bf3a1 (2 drafts)
(run 'hg heads .' to see heads, 'hg merge' to merge)
$ hg cat -r $REV target | head -n 10
$ hg cat -r $CLEANREV target | head -n 10
Re-sanitized; nothing to see here
$ hg update $CLEANREV
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Re-sanitized; nothing to see here
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 14 changesets with 15 changes to 2 files
Grepping only warns, doesn't error out
$ cd ../rpull
$ hg grep 'Normal file'
bystander:Normal file v2
$ hg grep nothing
target:Re-sanitized; nothing to see here
$ hg grep --diff 'Normal file'
cannot search in censored file: target:7
cannot search in censored file: target:10
cannot search in censored file: target:12
bystander:6:-:Normal file v2
cannot search in censored file: target:1
cannot search in censored file: target:2
cannot search in censored file: target:3
bystander:2:-:Normal file here
bystander:2:+:Normal file v2
bystander:0:+:Normal file here
$ hg grep --diff nothing
cannot search in censored file: target:7
cannot search in censored file: target:10
cannot search in censored file: target:12
target:13:+:Re-sanitized; nothing to see here
cannot search in censored file: target:1
cannot search in censored file: target:2
cannot search in censored file: target:3
Censored nodes can be imported on top of censored nodes, consecutively
$ hg init ../rimport
$ hg bundle --base 1 ../rimport/splitbundle
12 changesets found
$ cd ../rimport
$ hg pull -r $H1 -r $H2 ../r
pulling from ../r
adding changesets
adding manifests
adding file changes
added 8 changesets with 10 changes to 2 files (+1 heads)
new changesets e97f55b2665a:dcbaf17bf3a1
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg unbundle splitbundle
adding changesets
adding manifests
adding file changes
added 6 changesets with 5 changes to 2 files (+1 heads)
new changesets efbe78065929:683e4645fded (6 drafts)
(run 'hg heads .' to see heads, 'hg merge' to merge)
$ hg update $H2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Re-sanitized; nothing to see here
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 14 changesets with 15 changes to 2 files
$ cd ../r
Can import bundle where first revision of a file is censored
$ hg init ../rinit
$ hg censor -r 0 target
$ hg bundle -r 0 --base null ../rinit/initbundle
1 changesets found
$ cd ../rinit
$ hg unbundle initbundle
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
new changesets e97f55b2665a (1 drafts)
(run 'hg update' to get a working copy)
$ hg cat -r 0 target | head -n 10
#if revlogv2
Testing feature that does not work in revlog v1
===============================================
Censoring a revision that is used as delta base
-----------------------------------------------
$ cd ..
$ hg init censor-with-delta
$ cd censor-with-delta
$ echo root > target
$ hg add target
$ hg commit -m root
$ B0=`hg id --debug -i`
$ for x in `"$PYTHON" $TESTDIR/seq.py 0 50000`
> do
> echo "Password: hunter$x" >> target
> done
$ hg ci -m 'write a long file'
$ B1=`hg id --debug -i`
$ echo 'small change (should create a delta)' >> target
$ hg ci -m 'create a delta over the password'
(should show that the last revision is a delta, not a snapshot)
$ B2=`hg id --debug -i`
Make sure the last revision is a delta against the revision we will censor
$ hg debugdeltachain target -T '{rev} {chainid} {chainlen} {prevrev}\n'
0 1 1 -1
1 2 1 -1
2 2 2 1
Censor the file
$ hg cat -r $B1 target | wc -l
*50002 (re)
$ hg censor -r $B1 target
$ hg cat -r $B1 target | wc -l
*0 (re)
Check the children is fine
$ hg cat -r $B2 target | wc -l
*50003 (re)
#endif