diff options
Diffstat (limited to 'perl-install/security/msec.pm')
| -rw-r--r-- | perl-install/security/msec.pm | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/perl-install/security/msec.pm b/perl-install/security/msec.pm new file mode 100644 index 000000000..4258653ef --- /dev/null +++ b/perl-install/security/msec.pm @@ -0,0 +1,187 @@ +package security::msec; + +use strict; +use MDK::Common; + + +#------------------------------------------------------------- +# msec options managment methods + + +#------------------------------------------------------------- +# option defaults + +sub load_defaults { + my ($msec, $category) = @_; + my $separator = $msec->{$category}{def_separator}; + map { + my ($opt, $val) = split(/$separator/, $_, 2); + chop $val; + if_($opt ne 'set_security_conf', $opt => $val); + } cat_($msec->{$category}{defaults_file}), if_($category eq "checks", 'MAIL_USER'); +} + + +# get_XXX_default(function) - +# return the default of the function|check passed in argument. + +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 ($msec, $category) = @_; + my $separator = $msec->{$category}{val_separator}; + map { + my ($opt, $val) = split /$separator/; + chop $val; + $val =~ s/[()]//g; + chop $opt if $separator eq '\('; # $opt =~ s/ //g if $separator eq '\('; + if_(defined($val), $opt => $val); + } cat_($msec->{$category}{values_file}); +} + + +# get_XXX_value(check|function) - +# return the value of the function|check passed in argument. +# If no value is set, return "default". + +sub get_function_value { + my ($msec, $function) = @_; + exists $msec->{functions}{value}{$function} ? $msec->{functions}{value}{$function} : "default"; +} + +sub get_check_value { + my ($msec, $check) = @_; + $msec->{checks}{value}{$check} || "default"; +} + + + +#------------------------------------------------------------- +# get list of check|functions + +# list_(functions|checks) - +# return a list of functions|checks handled by level.local|security.conf + +sub raw_checks_list { + my ($msec) = @_; + keys %{$msec->{checks}{default}}; +} + +sub list_checks { + my ($msec) = @_; + difference2([ $msec->raw_checks_list ], [ qw(MAIL_WARN MAIL_USER) ]); +} + +sub list_functions { + my ($msec, $category) = @_; + + ## TODO handle 3 last functions here so they can be removed from this list + my @ignore_list = qw(indirect commit_changes closelog error initlog log set_secure_level + set_security_conf set_server_level print_changes get_translation create_server_link); + + my %options = ( + 'network' => [qw(accept_bogus_error_responses accept_broadcasted_icmp_echo accept_icmp_echo + enable_dns_spoofing_protection enable_ip_spoofing_protection + enable_log_strange_packets enable_promisc_check no_password_aging_for)], + 'system' => [qw(allow_autologin allow_issues allow_reboot allow_remote_root_login + allow_root_login allow_user_list allow_xauth_from_root allow_x_connections allow_xserver_to_listen + authorize_services enable_at_crontab enable_console_log + enable_msec_cron enable_pam_wheel_for_su enable_password enable_security_check + enable_sulogin password_aging password_history password_length set_root_umask + set_shell_history_size set_shell_timeout set_user_umask)]); + + # get all function names; filter out those which are in the ignore + # list, return what lefts. + grep { !member($_, @ignore_list) && member($_, @{$options{$category}}) } keys %{$msec->{functions}{default}}; +} + + +#------------------------------------------------------------- +# set back checks|functions values + +sub set_function { + my ($msec, $function, $value) = @_; + $msec->{functions}{value}{$function} = $value; +} + +sub set_check { + my ($msec, $check, $value) = @_; + $msec->{checks}{value}{$check} = $value; +} + + +#------------------------------------------------------------- +# apply configuration + +# config_(check|function)(check|function, value) - +# Apply the configuration to 'prefix'/etc/security/msec/security.conf||/etc/security/msec/level.local + +sub apply_functions { + my ($msec) = @_; + my @list = sort($msec->list_functions('system'), $msec->list_functions('network')); + touch($msec->{functions}{values_file}) if !-e $msec->{functions}{values_file}; + substInFile { + foreach my $function (@list) { s/^$function.*\n// } + if (eof) { + $_ .= join("\n", if_(!$_, ''), (map { + my $value = $msec->get_function_value($_); + if_($value ne 'default', "$_ ($value)"); + } @list), ""); + } + } $msec->{functions}{values_file}; +} + +sub apply_checks { + my ($msec) = @_; + my @list = sort $msec->raw_checks_list; + setVarsInSh($msec->{checks}{values_file}, + { + map { + my $value = $msec->get_check_value($_); + if_($value ne 'default', $_ => $value); + } @list + } + ); +} + +sub reload { + my ($msec) = @_; + require security::level; + my $num_level = security::level::get(); + $msec->{functions}{defaults_file} = "$::prefix/usr/share/msec/level.$num_level"; + $msec->{functions}{default} = { $msec->load_defaults('functions') }; +} + +sub new { + my ($type) = @_; + my $msec = bless {}, $type; + + $msec->{functions}{values_file} = "$::prefix/etc/security/msec/level.local"; + $msec->{checks}{values_file} = "$::prefix/etc/security/msec/security.conf"; + $msec->{checks}{defaults_file} = "$::prefix/var/lib/msec/security.conf"; + $msec->{checks}{val_separator} = '='; + $msec->{functions}{val_separator} = '\('; + $msec->{checks}{def_separator} = '='; + $msec->{functions}{def_separator} = ' '; + $msec->reload; + + $msec->{checks}{default} = { $msec->load_defaults('checks') }; + $msec->{functions}{value} = { $msec->load_values('functions') }; + $msec->{checks}{value} = { $msec->load_values('checks') }; + $msec; +} + +1; |