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883436839a
We need to unset BASH_ENV or we get:
Insecure $ENV{BASH_ENV} while running setgid
This probably only happens on recent perl versions.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
86 lines
1.8 KiB
Perl
Executable File
86 lines
1.8 KiB
Perl
Executable File
#!/usr/bin/perl -w
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use strict;
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use File::Path qw(rmtree);
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use POSIX ();
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sub _untaint_path
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{
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my ($path) = @_;
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if ($path =~ /^(.*)$/) {
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return $1;
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}
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die "bad path";
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}
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sub _create_snapshot
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{
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my ($base_path) = _untaint_path(shift);
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my $time_str = POSIX::strftime("%Y.%m.%d-%H.%M.%S" , localtime());
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my $snap_path = $base_path . "/.snapshots/\@GMT-" . $time_str;
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my $ret;
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delete @ENV{'BASH_ENV'};
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$ENV{'PATH'} = '/bin:/usr/bin'; # untaint PATH
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POSIX::mkdir($base_path . "/.snapshots", 0755);
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# add trailing slash to src path to ensure that only contents is copied
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$ret = system("rsync", "-a", "--exclude=.snapshots/", "${base_path}/",
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$snap_path);
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if ($ret != 0) {
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print STDERR "rsync failed with $ret\n";
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} else {
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print "$snap_path\n";
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}
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return $ret;
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}
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sub _delete_snapshot
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{
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my $base_path = _untaint_path(shift);
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my $snap_path = _untaint_path(shift);
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# we're doing a recursive delete, so do some sanity checks
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if ((index($snap_path, $base_path) != 0) || (index($snap_path, ".snapshots") == -1)) {
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print STDERR "invalid snap_path: $snap_path\n";
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return -1;
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}
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$ENV{'PATH'} = '/bin:/usr/bin'; # untaint PATH
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rmtree($snap_path, {error => \my $err});
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if (@$err) {
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for my $diag (@$err) {
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my ($file, $message) = %$diag;
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if ($file eq '') {
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print STDERR "rmtree error: $message\n";
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} else {
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print STDERR "rmtree error $file: $message\n";
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}
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}
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return -1;
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}
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return 0;
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}
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my $ret;
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my $num_args = $#ARGV + 1;
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my $cmd = shift;
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if (($num_args == 2) && ($cmd eq "--check")) {
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$ret = 0;
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} elsif (($num_args == 2) && ($cmd eq "--create")) {
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$ret = _create_snapshot($ARGV[0]);
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} elsif (($num_args == 3) && ($cmd eq "--delete")) {
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$ret = _delete_snapshot($ARGV[0], $ARGV[1]);
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} else {
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print STDERR "invalid script argument\n";
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$ret = -1;
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}
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exit $ret;
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