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package security::msec;
use strict;
use MDK::Common::File;
use MDK::Common;
#-------------------------------------------------------------
# msec files
my $check_file = "$::prefix/etc/security/msec/security.conf";
my $curr_sec_file = "$::prefix/var/lib/msec/security.conf";
my $options_file = "$::prefix/etc/security/msec/level.local";
# ***********************************************
# PRIVATE FUNCTIONS
# ***********************************************
my $num_level;
#-------------------------------------------------------------
# msec options managment methods
#-------------------------------------------------------------
# option defaults
sub load_defaults {
my ($category) = @_;
my $default_file;
my $num_level = 0;
if ($category eq 'functions') {
require security::level;
$num_level ||= security::level::get();
$default_file = "$::prefix/usr/share/msec/level.".$num_level;
}
elsif ($category eq 'checks') { $default_file = $curr_sec_file }
my $separator = $category eq 'functions' ? ' ' : $category eq 'checks' ? '=' : undef;
do { print "BACKTRACE:\n", backtrace(), "\n"; die 'wrong category' } unless $separator;
map {
my ($opt, $val) = split /$separator/;
chop $val;
if_($opt ne 'set_security_conf', $opt => $val);
} cat_($default_file);
}
# get_XXX_default(function) -
# return the default of the function|check passed in argument.
# If no default is set, return "default".
sub get_check_default {
my ($msec, $check) = @_;
$msec->{checks}{default}{$check};
}
sub get_function_default {
my ($msec, $function) = @_;
$msec->{functions}{default}{$function};
}
#-------------------------------------------------------------
# option values
sub load_values {
my ($category) = @_;
my $item_file =
$category eq 'functions' ? $options_file :
$category eq 'checks' ? $check_file : '';
my $separator = $category eq 'functions' ? '\(' : $category eq 'checks' ? '=' : undef;
do { print "BACKTRACE:\n", backtrace(), "\n"; die 'wrong category' } unless $separator;
map {
my ($opt, $val) = split /$separator/;
$val =~ s/[()]//g;
chop $opt if $separator eq '\('; # $opt =~ s/ //g if $separator eq '\(';
chop $val;
$opt => $val;
} cat_($item_file);
}
# get_XXX_value(function) -
# return the value of the function|check passed in argument.
# If no value is set, return "default".
sub get_function_value {
my ($msec, $function) = @_;
$msec->{functions}{value}{$function} || "default";
}
sub get_check_value {
my ($msec, $check) = @_;
# print "value for '$check' is '$msec->{checks}{value}{$check}'\n";
$msec->{checks}{value}{$check} || "default";
}
# ***********************************************
# FUNCTIONS (level.local) RELATED
# ***********************************************
# get_functions() -
# return a list of functions handled by level.local (see
# man mseclib for more info).
sub get_functions {
my (undef, $category) = @_;
my @functions;
## TODO handle 3 last functions here so they can be removed from this list
my @ignore_list = qw(indirect commit_changes closelog error initlog log set_secure_level
set_security_conf set_server_level print_changes get_translation create_server_link);
my %options = (
'network' => [qw(accept_bogus_error_responses accept_broadcasted_icmp_echo accept_icmp_echo
enable_dns_spoofing_protection enable_ip_spoofing_protection
enable_log_strange_packets enable_promisc_check no_password_aging_for)],
'system' => [qw(allow_autologin allow_issues allow_reboot allow_remote_root_login
allow_root_login allow_user_list allow_x_connections allow_xserver_to_listen
authorize_services enable_at_crontab enable_console_log
enable_msec_cron enable_pam_wheel_for_su enable_password enable_security_check
enable_sulogin password_aging password_history password_length set_root_umask
set_shell_history_size set_shell_timeout set_user_umask)]);
my $file = "$::prefix/usr/share/msec/mseclib.py";
my $function;
# read mseclib.py to get each function's name and if it's
# not in the ignore list, add it to the returned list.
foreach (cat_($file)) {
if (/^def/) {
(undef, $function) = split / /;
($function, undef) = split(/\(/, $function);
if (!member($function, @ignore_list) && member($function, @{$options{$category}})) {
push(@functions, $function)
}
}
}
@functions;
}
# config_function(function, value) -
# Apply the configuration to 'prefix'/etc/security/msec/level.local
sub config_function {
my (undef, $function, $value) = @_;
substInFile { s/^$function.*\n// } $options_file;
append_to_file($options_file, "$function ($value)") if $value ne 'default';
}
# ***********************************************
# PERIODIC CHECKS (security.conf) RELATED
# ***********************************************
# get_default_checks() -
# return a list of periodic checks handled by security.conf
sub get_default_checks {
my ($msec) = @_;
keys %{$msec->{checks}{default}};
}
# config_check(check, value)
# Apply the configuration to "$::prefix"/etc/security/msec/security.conf
sub config_check {
my (undef, $check, $value) = @_;
if ($value eq 'default') {
substInFile { s/^$check.*\n// } $check_file;
} else {
setVarsInSh($check_file, { $check => $value });
}
}
sub new {
my $type = shift;
my $thing = {};
$thing->{checks}{default} = { load_defaults('checks') };
$thing->{functions}{default} = { load_defaults('functions') };
$thing->{functions}{value} = { load_values('functions') };
$thing->{checks}{value} = { load_values('checks') };
bless $thing, $type;
}
1;
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