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gitk: Use mktemp -d to avoid predictable temporary directories

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gitk uses a predictable ".gitk-tmp.$PID" pattern when generating
a temporary directory.

Use "mktemp -d .gitk-tmp.XXXXXX" to harden gitk against someone
seeding /tmp with files matching the pid pattern.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Aguilar 2014-06-13 14:43:48 -07:00 committed by Paul Mackerras
parent c7664f1a8c
commit 105b5d3fbb
1 changed files with 2 additions and 1 deletions
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@ -3503,7 +3503,8 @@ proc gitknewtmpdir {} {
} else {
set tmpdir $gitdir
}
set gitktmpdir [file join $tmpdir [format ".gitk-tmp.%s" [pid]]]
set gitktmpformat [file join $tmpdir ".gitk-tmp.XXXXXX"]
set gitktmpdir [exec mktemp -d $gitktmpformat]
if {[catch {file mkdir $gitktmpdir} err]} {
error_popup "[mc "Error creating temporary directory %s:" $gitktmpdir] $err"
unset gitktmpdir