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|
#!/usr/bin/perl
#
#!/usr/bin/perl
#
# Copyright (C) 2006 Mandriva
#
# Author: Florent Villard <warly@mandriva.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# run commands which needs root privilege
#
use strict;
my $program_name = 'iurt_root_command';
use Mkcd::Commandline qw(parseCommandLine usage);
use MDK::Common;
my $arg = @ARGV;
my (@params, %run);
$run{program_name} = $program_name;
my %authorized_modules = ( 'unionfs' => 1 );
my $sudo = '/usr/bin/sudo';
$run{todo} = [ ];
@params = (
# [ "one letter option", "long name option", "number of args (-X means ´at least X´)", "help text", "function to call", "log info"]
#
# no_rsync, config_help and copy_srpm kept for compatibility reasons
#
[ "", "$program_name", 0, "[--verbose <level>]
[--modprobe <module>]
[--mkdir [--parents] <dir1> <dir2> ... <dirn>]",
"$program_name is a perl script to execute commands which need root privilege, it helps probram which needs occasional root privileges for some commands.",
sub { $arg or usage($program_name, \@params) }, "Running $program_name" ],
[ "", "mkdir", [
["", "mkdir", -1, "[--parents] <dir1> <dir2> ... <dirn>]", "mkdir create the given path",
sub {
my ($tmp, @arg) = @_;
$tmp->[0] ||= {};
push @$tmp, @arg;
1
}, "Setting auto mode arguments"],
["p", "parents", 0, "",
"Also create needed parents directories",
sub { my ($tmp) = @_; $tmp->[0]{parents} = 1; 1 }, "Set the parents flag"],
], "[--parents] <dir1> <dir2> ... <dirn>]",
"mkdir create the given path",
\&mkdir, "Creating the path" ],
[ "", "rm", [
["", "rm", -1, "[-f] [-r] <file1> <file2> ... <filen>]", "remove the provided files",
sub {
my ($tmp, @arg) = @_;
$tmp->[0] ||= {};
push @$tmp, @arg;
1
}, "Setting rm command arguments"],
["r", "recursive", 0, "",
"Also create needed parents directories",
sub { my ($tmp) = @_; $tmp->[0]{recursive} = 1; 1 }, "Set the recursive flag"],
], "[-r] <file1> <file2> ... <filen>]",
"Remove files",
\&rm, "Removing files" ],
[ "", "initdb", 1 , "<chroot>]",
"perform a rpm --initdb in the chroot.",
\&initdb, "Initializing the rpm database" ],
[ "v", "verbose", 1, "<verbose level>",
"modprobe try to modprobe the given module if authorized.",
sub { $run{verbose} = @_->[0]; 1 }, "Setting verbose level" ],
[ "", "modprobe", 1, "<module>]",
"modprobe try to modprobe the given module if authorized.",
\&modprobe, "Modprobing" ],
);
open(my $LOG, ">&STDERR");
$run{LOG} = $LOG;
my $todo = parseCommandLine($program_name, \@ARGV, \@params);
@ARGV and usage($program_name, \@params, "@ARGV, too many arguments");
foreach my $t (@$todo) {
print {$run{LOG}} "$program_name: $t->[2]\n" if $run{verbose} > 5;
&{$t->[0]}(\%run, @{$t->[1]}) or print {$run{LOG}} "ERROR: $t->[2]\n";
}
exit;
sub modprobe {
my ($run, $module) = @_;
if (!$authorized_modules{$module}) {
print {$run->{LOG}} "ERROR $program_name: unauthorized module $module\n";
return 0
}
system($sudo, "/sbin/depmod", "-a");
!system($sudo, "/sbin/modprobe", "-f", $module)
}
sub mkdir {
my ($run, $opt, @dir) = @_;
foreach my $path (@dir) {
-d $path and next;
if ($path =~ m,/dev|/proc|/root|/var, && $path !~ /chroot|unionfs/) {
print {$run->{LOG}} "ERROR $program_name: $path creation forbidden\n";
}
if ($opt->{parents}) {
mkdir_p $path
} else {
mkdir $path
}
}
1
}
sub initdb {
my ($run, $chroot) = @_;
if (-d $chroot && $chroot !~ /chroot|unionfs/) {
print {$run{LOG}} "ERROR $program_name: rpm --initdb not authorized in $chroot\n";
return 0
}
!system("rpm", "--initdb", "--root", "$chroot")
}
sub rm {
my ($run, $opt, @files) = @_;
my $ok = 1;
my $done;
my $unauthorized = "^(/etc|/root|/dev|/var|/lib|/usr)";
foreach my $f (@files) {
if (-d $f) {
if (!$opt->{recursive}) {
print {$run->{LOG}} "$program_name: could not remove directories without the -r option\n";
$ok = 0
} else {
if ($f =~ m,$unauthorized,) {
print {$run->{LOG}} "$program_name: removal of $f forbidden\n";
$ok = 0
} else {
system($sudo, 'rm', '-rf', $f);
print {$run->{LOG}} "$program_name: removing $f\n" if $run->{verbose};
$done = 1
}
}
} else {
if ($f =~ m,/root|/dev|/var|/lib|/usr,) {
print {$run->{LOG}} "$program_name: removal of $f forbidden\n";
$ok = 0
} else {
if ($f =~ /\*?/) {
foreach my $file (glob $f) {
if ($f =~ m,/root|/dev|/var|/lib|/usr,) {
print {$run->{LOG}} "$program_name: removal of $f forbidden\n";
$ok = 0
} else {
unlink $file;
$done = 1;
print {$run->{LOG}} "$program_name: removing $file\n" if $run->{verbose}
}
}
} else {
unlink $f;
$done = 1;
print {$run->{LOG}} "$program_name: removing $f\n" if $run->{verbose}
}
}
}
}
if (!$done) { print {$run->{LOG}} "$program_name: nothing deleted\n" }
$ok
}
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