diff options
Diffstat (limited to 'perl-install/security/msec.pm')
| -rw-r--r-- | perl-install/security/msec.pm | 407 |
1 files changed, 178 insertions, 229 deletions
diff --git a/perl-install/security/msec.pm b/perl-install/security/msec.pm index 66800ef11..4258653ef 100644 --- a/perl-install/security/msec.pm +++ b/perl-install/security/msec.pm @@ -1,238 +1,187 @@ package security::msec; -use common; -use log; - -sub get_user_list { - my @user_list = (); - - open(PASSWD, "/etc/passwd"); - while(<PASSWD>) { - my ($login_name, undef, $uid) = split(/:/,$_); - if($uid >= 500) { push(@user_list, $login_name); } - } - @user_list; +use strict; +use MDK::Common; + + +#------------------------------------------------------------- +# msec options managment methods + + +#------------------------------------------------------------- +# option defaults + +sub load_defaults { + my ($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', $_ => $value); + } @list + } + ); } -sub add_config { - my ($prefix, $config_option, @values) = @_; - my $tmp_file = "$prefix/etc/security/msec/level.local.tmp"; - my $result = ""; - - $result = $config_option.'('; - foreach $value (@values) { - $result .= $value.','; - } - chop $result; - $result .= ')'; - - open(TMP_CONFIG, '>>'.$tmp_file); - print TMP_CONFIG "$result\n"; - close TMP_CONFIG; +sub reload { + my ($msec) = @_; + require security::level; + my $num_level = security::level::get(); + $msec->{functions}{defaults_file} = "$::prefix/usr/share/msec/level.$num_level"; + $msec->{functions}{default} = { $msec->load_defaults('functions') }; } -sub commit_changes { - my ($prefix) = $_; - my $tmp_file = "$prefix/etc/security/msec/level.local.tmp"; - my $config_file = "$prefix/etc/security/msec/level.local"; - my %config_data; - my $config_option = ""; - - open (TMP_CONFIG, $tmp_file); - - if (!(-x $config_file)) { - open(CONFIG_FILE, '>'.$config_file); - print CONFIG_FILE "from mseclib import *\n\n"; - while(<TMP_CONFIG>) { print CONFIG_FILE $_; } - } - else { - open(CONFIG_FILE, $config_file); - while(<CONFIG_FILE>) { - if($_ =~ /\(/) { - ($config_option, undef) = split(/\(/, $_); - (undef, $config_data{$config_option}) = split(/\(/, $_); - } - } - close CONFIG_FILE; - - while(<TMP_CONFIG>) { - ($config_option, undef) = split(/\(/, $_); - (undef, $config_data{$config_option}) = split(/\(/, $_); - } - - open(CONFIG_FILE, '>'.$config_file); - print CONFIG_FILE "from mseclib import *\n\n"; - foreach $config_option (keys %config_data) { - print CONFIG_FILE $config_option.'('.$config_data{$config_option}.'\n'; - } - } - - close CONFIG_FILE; - close TMP_CONFIG; - - standalone::rm_rf($tmp_file); -} - -sub get_config { - my ($prefix, $security) = @_; - - my (%net_options_defaults) = ( - accept_bogus_error_responses => [ 0, 0, 0, 0, 1, 1 ], - accept_icmp_echo => [ 1, 1, 1, 1, 0, 0 ], - enable_ip_spoofing_protection => [ 0, 0, 0, 1, 1, 1 ], - enable_log_strange_packets => [ 0, 0, 0, 0, 1, 1 ] ); - - my (%user_options_defaults) = ( - allow_autologin => [ 1, 1, 1, 0, 0, 0 ], - allow_issues => [ "ALL", "ALL", "ALL", "LOCAL", "LOCAL", "NONE" ], - allow_reboot => [ 1, 1, 1, 1, 0, 0 ], - allow_root_login => [ 1, 1, 1, 1, 0, 0 ], - allow_user_list => [ 1, 1, 1, 1, 0, 0 ], - enable_at_crontab => [ 1, 1, 1, 1, 0, 0 ], - enable_pam_wheel_for_su => [ 0, 0, 0, 0, 0, 0 ], - enable_password => [ 0, 1, 1, 1, 1, 1 ], - enable_sulogin => [ 0, 0, 0, 0, 1, 1 ], - password_aging => [ "99999,-1", "99999,-1", "99999,-1", "99999,-1", "60,-1", "30,-1" ], - password_length => [ "0,0,0", "0,0,0", "0,0,0", "0,0,0", "0,0,0", "0,0,0" ], - set_root_umask => [ "002", "002", "022", "022", "022", "077" ], - set_user_umask => [ "002", "002", "022", "022", "077", "077" ], - set_shell_history_size => [ "-1", "-1", "-1", "-1", "10", "10" ], - set_shell_timeout => [ "0", "0", "0", "0", "3600", "900" ] ); - - my (%server_options_defaults) = ( - allow_x_connections => [ "ALL", "LOCAL", "LOCAL", "LOCAL", "LOCAL", "NONE" ], - authorize_services => [ "ALL", "ALL", "ALL", "ALL", "LOCAL", "NONE" ], - enable_libsafe => [ 0, 0, 0, 0, 0, 0 ] ); - - my (%net_options) = ( - accept_bogus_error_responses => $net_options_defaults{accept_bogus_error_responses}[$security], - accept_icmp_echo => $net_options_defaults{accept_icmp_echo}[$security], - enable_ip_spoofing_protection => $net_options_defaults{enable_ip_spoofing_protection}[$security], - enable_log_strange_packets => $net_options_defaults{enable_log_strange_packets}[$security] - ); - - my (%net_options_matrix) = ( - accept_bogus_error_responses => { label => _("Accept/Refuse bogus IPV4 error messages"), - val => \$net_options{accept_bogus_error_responses}, - type => "bool" }, - accept_icmp_echo => { label => _("Accept/Refuse ICMP echo"), - val => \$net_options{accept_icmp_echo}, - type => "bool" }, - enable_ip_spoofing_protection => { label => _("Enable/Disable IP spoofing protection. If alert is true, also reports to syslog"), - val => \$net_options{enable_ip_spoofing_protection}, - type=> "bool" }, - enable_log_strange_packets => { label => _("Enable/Disable the logging of IPv4 strange packets"), - val => \$net_options{enable_log_strange_packets}, - type => "bool" } - ); - - my (%user_options) = ( - allow_autologin => $user_options_defaults{allow_autologin}[$security], - allow_issues => $user_options_defaults{allow_issues}[$security], - allow_reboot => $user_options_defaults{allow_reboot}[$security], - allow_root_login => $user_options_defaults{allow_root_login}[$security], - allow_user_list => $user_options_defaults{allow_user_list}[$security], - enable_at_crontab => $user_options_defaults{enable_at_crontab}[$security], - enable_pam_wheel_for_su => $user_options_defaults{enable_pam_wheel_for_su}[$security], - enable_password => $user_options_defaults{enable_password}[$security], - enable_sulogin => $user_options_defaults{enable_sulogin}[$security], - password_aging => $user_options_defaults{password_aging}[$security], - password_length => $user_options_defaults{password_length}[$security], - set_root_umask => $user_options_defaults{set_root_umask}[$security], - set_user_umask => $user_options_defaults{set_user_umask}[$security], - set_shell_history_size => $user_options_defaults{set_shell_history_size}[$security], - set_shell_timeout => $user_options_defaults{set_shell_timeout}[$security] - ); - - my (%user_options_matrix) = ( - allow_autologin => { label => _("Allow/Forbid autologin"), - val => \$user_options{allow_autologin}, - type => "bool" }, - allow_issues => { label => _("Allow/Forbid pre-login message : If ALL, allow remote and local pre-login message (/etc/issue[.net]).\n If LOCAL, allow local pre-login message (/etc/issue). If NONE, disable pre-login message."), - val => \$user_options{allow_issues}, - list => ["ALL", "LOCAL", "NONE"] }, - allow_reboot => { label => _("Allow/Forbid reboot by the console user"), - val => \$user_options{allow_reboot}, - type => "bool" }, - allow_root_login => { label => _("Allow/Forbid direct root login"), - val => \$user_options{allow_root_login}, - type => "bool" }, - allow_user_list => { label => _("Allow/Forbid the list of users on the system in the display managers (kdm and gdm)"), - val => \$user_options{allow_user_list}, - type => "bool" }, - enable_at_crontab => { label => _("Enable/Disable crontab and at for users. Put allowed users in /etc/cron.allow\n and /etc/at.allow (see at(1) and crontab(1))"), - val => \$user_options{enable_at_crontab}, - type => "bool" }, - enable_pam_wheel_for_su => { label => _("Enable su only for members of the wheel group or allow su from any user"), - val => \$user_options{enable_pam_wheel_for_su}, - type => "bool" }, - enable_password => { label => _("Use password to authenticate users"), - val => \$user_options{enable_password}, - type => "bool" }, - enable_sulogin => { label => _("Enable/Disable sulogin in single user level (see sulogin(8))"), - val => \$user_options{enable_sulogin}, - type => "bool" }, - password_aging => { label => _("Set password aging to max days, Set delay before inactive\n (99999 to disable password aging, -1 to disable de-activation"), - val => \$user_options{password_aging} }, - password_length => { label => _("Set the password minimum length, the minimum number of digits and the minimum number of capitalized letters"), - val => \$user_options{password_length} }, - set_root_umask => { label => _("Set the root umask"), - val => \$user_options{set_root_umask} }, - set_user_umask => { label => _("Set the user umask"), - val => \$user_options{set_user_umask} }, - set_shell_history_size => { label => _("Set shell commands history size (-1 for unlimited)"), - val => \$user_options{set_shell_history_size} }, - set_shell_timeout => { label => _("Set the shell timeout in seconds (0 for unlimited)"), - val => \$user_options{set_shell_timeout} } - ); - - my (%server_options) = ( - allow_x_connections => $server_options_defaults{allow_x_connections}[$security], - authorize_services => $server_options_defaults{authorize_services}[$security], - enable_libsafe => $server_options_defaults{enable_libsafe}[$security] - ); - - my (%server_options_matrix) = ( - allow_x_connections => { label => ("Allow/Forbid X connections : If ALL, all connections allowed. If LOCAL, local connections allowed.\n If NONE, only console connections allowed"), - val => \$server_options{allow_x_connections}, - list => [ "ALL", "LOCAL", "NONE" ] }, - authorize_services => { label => _("Allow/Forbid services : If ALL, authorize all services. If LOCAL, authorize only local services.\n If NONE, disable all services. (see hosts.deny(5)). To authorize a service, see hosts.allow(5)."), - val => \$server_options{authorize_services}, - list => [ "ALL", "LOCAL", "NONE" ] }, - enable_libsafe => { label => _("Enable/Disable libsafe if it's installed on the system."), - val => \$server_options{enable_libsafe}, - type => "bool" }, - ); - - my $config_file = "$prefix/etc/security/msec/level.local"; - my $values = ""; - my $config_option = ""; - - open CONFIGFILE, $config_file; - while(<CONFIGFILE>) { - if($_ =~ /\(/) { - ($config_option, undef) = split(/\(/, $_); - (undef, $values) = split(/\(/, $_); - chop $values; - - if ($config_option ne "set_security_conf") { - if ($net_options_matrix{$config_option}{description} eq "") { - (undef, $net_options_matrix{$config_option}{value}) = $values; - } elsif ($user_options_matrix{$config_option}{description} eq "") { - (undef, $user_options_matrix{$config_option}{value}) = $values; - } elsif ($server_options_matrix{$config_option}{description} eq "") { - (undef, $server_options_matrix{$config_option}{value}) = $values; - } - } - else { - # TODO : Add code to handle set_security_conf - } - } - } - - close CONFIGFILE; - - return (\%net_options_matrix, \%user_options_matrix, \%server_options_matrix); +sub new { + my ($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; |