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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.
Yuya Nishihara - - Load All Authors

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r30819:89772662 default
r32050:77eaf953 4.1.3 stable
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test-diff-unified.t
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$ hg init repo
$ cd repo
$ cat > a <<EOF
> c
> c
> a
> a
> b
> a
> a
> c
> c
> EOF
$ hg ci -Am adda
adding a
$ cat > a <<EOF
> c
> c
> a
> a
> dd
> a
> a
> c
> c
> EOF
default context
$ hg diff --nodates
diff -r cf9f4ba66af2 a
--- a/a
+++ b/a
@@ -2,7 +2,7 @@
c
a
a
-b
+dd
a
a
c
invalid --unified
$ hg diff --nodates -U foo
abort: diff context lines count must be an integer, not 'foo'
[255]
$ hg diff --nodates -U 2
diff -r cf9f4ba66af2 a
--- a/a
+++ b/a
@@ -3,5 +3,5 @@
a
a
-b
+dd
a
a
$ hg --config diff.unified=2 diff --nodates
diff -r cf9f4ba66af2 a
--- a/a
+++ b/a
@@ -3,5 +3,5 @@
a
a
-b
+dd
a
a
$ hg diff --nodates -U 1
diff -r cf9f4ba66af2 a
--- a/a
+++ b/a
@@ -4,3 +4,3 @@
a
-b
+dd
a
invalid diff.unified
$ hg --config diff.unified=foo diff --nodates
abort: diff context lines count must be an integer, not 'foo'
[255]
noprefix config and option
$ hg --config diff.noprefix=True diff --nodates
diff -r cf9f4ba66af2 a
--- a
+++ a
@@ -2,7 +2,7 @@
c
a
a
-b
+dd
a
a
c
$ hg diff --noprefix --nodates
diff -r cf9f4ba66af2 a
--- a
+++ a
@@ -2,7 +2,7 @@
c
a
a
-b
+dd
a
a
c
noprefix config disabled in plain mode, but option still enabled
$ HGPLAIN=1 hg --config diff.noprefix=True diff --nodates
diff -r cf9f4ba66af2 a
--- a/a
+++ b/a
@@ -2,7 +2,7 @@
c
a
a
-b
+dd
a
a
c
$ HGPLAIN=1 hg diff --noprefix --nodates
diff -r cf9f4ba66af2 a
--- a
+++ a
@@ -2,7 +2,7 @@
c
a
a
-b
+dd
a
a
c
$ cd ..
0 lines of context hunk header matches gnu diff hunk header
$ hg init diffzero
$ cd diffzero
$ cat > f1 << EOF
> c2
> c4
> c5
> EOF
$ hg commit -Am0
adding f1
$ cat > f2 << EOF
> c1
> c2
> c3
> c4
> EOF
$ mv f2 f1
$ hg diff -U0 --nodates
diff -r 55d8ff78db23 f1
--- a/f1
+++ b/f1
@@ -0,0 +1,1 @@
+c1
@@ -1,0 +3,1 @@
+c3
@@ -3,1 +4,0 @@
-c5
$ hg diff -U0 --nodates --git
diff --git a/f1 b/f1
--- a/f1
+++ b/f1
@@ -0,0 +1,1 @@
+c1
@@ -1,0 +3,1 @@
+c3
@@ -3,1 +4,0 @@
-c5
$ hg diff -U0 --nodates -p
diff -r 55d8ff78db23 f1
--- a/f1
+++ b/f1
@@ -0,0 +1,1 @@
+c1
@@ -1,0 +3,1 @@ c2
+c3
@@ -3,1 +4,0 @@ c4
-c5
$ echo a > f1
$ hg ci -m movef2
Test diff headers terminating with TAB when necessary (issue3357)
Regular diff --nodates, file creation
$ hg mv f1 'f 1'
$ echo b > 'f 1'
$ hg diff --nodates 'f 1'
diff -r 7574207d0d15 f 1
--- /dev/null
+++ b/f 1
@@ -0,0 +1,1 @@
+b
Git diff, adding space
$ hg diff --git
diff --git a/f1 b/f 1
rename from f1
rename to f 1
--- a/f1
+++ b/f 1
@@ -1,1 +1,1 @@
-a
+b
Git diff, adding extended headers
$ hg diff --git --config experimental.extendedheader.index=7 --config experimental.extendedheader.similarity=True
diff --git a/f1 b/f 1
similarity index 0%
rename from f1
rename to f 1
index 7898192..6178079 100644
--- a/f1
+++ b/f 1
@@ -1,1 +1,1 @@
-a
+b
$ hg diff --git --config experimental.extendedheader.index=-1
invalid length for extendedheader.index: '-1'
diff --git a/f1 b/f 1
rename from f1
rename to f 1
--- a/f1
+++ b/f 1
@@ -1,1 +1,1 @@
-a
+b
$ hg diff --git --config experimental.extendedheader.index=whatever
invalid value for extendedheader.index: 'whatever'
diff --git a/f1 b/f 1
rename from f1
rename to f 1
--- a/f1
+++ b/f 1
@@ -1,1 +1,1 @@
-a
+b
Git diff with noprefix
$ hg --config diff.noprefix=True diff --git --nodates
diff --git f1 f 1
rename from f1
rename to f 1
--- f1
+++ f 1
@@ -1,1 +1,1 @@
-a
+b
noprefix config disabled in plain mode, but option still enabled
$ HGPLAIN=1 hg --config diff.noprefix=True diff --git --nodates
diff --git a/f1 b/f 1
rename from f1
rename to f 1
--- a/f1
+++ b/f 1
@@ -1,1 +1,1 @@
-a
+b
$ HGPLAIN=1 hg diff --git --noprefix --nodates
diff --git f1 f 1
rename from f1
rename to f 1
--- f1
+++ f 1
@@ -1,1 +1,1 @@
-a
+b
Regular diff --nodates, file deletion
$ hg ci -m addspace
$ hg mv 'f 1' f1
$ echo a > f1
$ hg diff --nodates 'f 1'
diff -r ca50fe67c9c7 f 1
--- a/f 1
+++ /dev/null
@@ -1,1 +0,0 @@
-b
Git diff, removing space
$ hg diff --git
diff --git a/f 1 b/f1
rename from f 1
rename to f1
--- a/f 1
+++ b/f1
@@ -1,1 +1,1 @@
-b
+a
showfunc diff
$ cat > f1 << EOF
> int main() {
> int a = 0;
> int b = 1;
> int c = 2;
> int d = 3;
> return a + b + c + d;
> }
> EOF
$ hg commit -m addfunction
$ cat > f1 << EOF
> int main() {
> int a = 0;
> int b = 1;
> int c = 2;
> int e = 3;
> return a + b + c + e;
> }
> EOF
$ hg diff --git
diff --git a/f1 b/f1
--- a/f1
+++ b/f1
@@ -2,6 +2,6 @@
int a = 0;
int b = 1;
int c = 2;
- int d = 3;
- return a + b + c + d;
+ int e = 3;
+ return a + b + c + e;
}
$ hg diff --config diff.showfunc=True --git
diff --git a/f1 b/f1
--- a/f1
+++ b/f1
@@ -2,6 +2,6 @@ int main() {
int a = 0;
int b = 1;
int c = 2;
- int d = 3;
- return a + b + c + d;
+ int e = 3;
+ return a + b + c + e;
}
If [diff] git is set to true, but the user says --no-git, we should
*not* get git diffs
$ hg diff --nodates --config diff.git=1 --no-git
diff -r f2c7c817fa55 f1
--- a/f1
+++ b/f1
@@ -2,6 +2,6 @@
int a = 0;
int b = 1;
int c = 2;
- int d = 3;
- return a + b + c + d;
+ int e = 3;
+ return a + b + c + e;
}
$ cd ..