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btrbk: bugfix: untaint result of system_realpath()

pull/88/head
Axel Burri 2016-04-02 14:10:35 +02:00
parent 407d25f604
commit 86170e6b21
1 changed files with 4 additions and 3 deletions
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@ -1129,12 +1129,13 @@ sub system_realpath($)
); );
return undef unless(defined($ret)); return undef unless(defined($ret));
unless($ret =~ /^$file_match$/) { unless($ret =~ /^($file_match)$/) {
ERROR "Failed to parse output of `realpath` for \"$vol->{PRINT}\": \"$ret\""; ERROR "Failed to parse output of `realpath` for \"$vol->{PRINT}\": \"$ret\"";
return undef; return undef;
} }
DEBUG "Real path for \"$vol->{PRINT}\" is: $ret"; my $realpath = $1; # untaint argument
return $ret; DEBUG "Real path for \"$vol->{PRINT}\" is: $realpath";
return $realpath;
} }