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-rwxr-xr-xscripts/system/vyatta_update_login.pl327
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diff --git a/scripts/system/vyatta_update_login.pl b/scripts/system/vyatta_update_login.pl
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+#!/usr/bin/perl
+
+# **** License ****
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# 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.
+#
+# This code was originally developed by Vyatta, Inc.
+# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
+# All Rights Reserved.
+#
+# **** End License ****
+
+use strict;
+use lib "/opt/vyatta/share/perl5";
+use Vyatta::Config;
+
+# handle "user"
+my $uconfig = new Vyatta::Config;
+$uconfig->setLevel("system login user");
+
+my %users = $uconfig->listNodeStatus();
+my @user_keys = sort keys %users;
+
+if ( ( scalar(@user_keys) <= 0 )
+ || !( grep /^root$/, @user_keys )
+ || ( $users{'root'} eq 'deleted' ) )
+{
+
+ # root is deleted
+ print STDERR "User \"root\" cannot be deleted\n";
+ exit 1;
+}
+
+# Exit codes form useradd.8 man page
+my %reasons = (
+ 0 => 'success',
+ 1 => 'can´t update password file',
+ 2 => 'invalid command syntax',
+ 3 => 'invalid argument to option',
+ 4 => 'UID already in use (and no -o)',
+ 6 => 'specified group doesn´t exist',
+ 9 => 'username already in use',
+ 10 => 'can´t update group file',
+ 12 => 'can´t create home directory',
+ 13 => 'can´t create mail spool',
+);
+
+# Map of level to additional groups
+my %level_map = (
+ 'admin' => [ 'quaggavty', 'vyattacfg', 'sudo', 'adm', 'dip', 'disk'],
+ 'operator' => [ 'quaggavty', 'operator', 'adm', 'dip', ],
+);
+
+# Construct a map from existing users to group membership
+# Use space seperated format
+my %group_map;
+while (my ($name, undef, undef, $members) = getgrent()) {
+ foreach my $user (split / /,$members) {
+ my $g = $group_map{$user};
+ if ($g) {
+ my @l = split / /, $g;
+ push @l, $name;
+ $group_map{$user} = join(' ', sort @l);
+ } else {
+ $group_map{$user} = $name;
+ }
+
+ }
+}
+
+# we have some users
+for my $user (@user_keys) {
+ if ( $users{$user} eq 'deleted' ) {
+ system("sudo userdel -r '$user'") == 0
+ or die "userdel failed: $?\n"
+ }
+ elsif ( $users{$user} eq 'added' || $users{$user} eq 'changed' ) {
+ $uconfig->setLevel("system login user $user");
+ my $pwd = $uconfig->returnValue('authentication encrypted-password');
+ $pwd or die "Encrypted password not in configuration for $user";
+
+ my $level = $uconfig->returnValue('level');
+ $level or die "Level not defined for $user";
+
+ # map level to group membership
+ my @groups = @{$level_map{$level}};
+ # add any additional groups from configuration
+ push( @groups, $uconfig->returnValues('group') );
+
+ my $fname = $uconfig->returnValue('full-name');
+ my $home = $uconfig->returnValue('home-directory');
+
+ # Read existing settings
+ my (undef, $opwd, $uid, $gid, undef, $comment,
+ undef, $dir, $shell, undef) = getpwnam($user);
+
+ my $cmd;
+ # not found in existing passwd, must be new
+ if ( !defined $uid ) {
+ # make new user using vyatta shell
+ # and make home directory (-m)
+ # and with default group of 100 (users)
+ $cmd = 'useradd -s /bin/vbash -m -N';
+ } else {
+ # If no part of password or group file changed
+ # then there is nothing to do here.
+ next if ( $opwd eq $pwd &&
+ (!$fname || $fname eq $comment) &&
+ (!$home || $home eq $dir) &&
+ join(' ', sort @groups) eq $group_map{$user} );
+
+ $cmd = "usermod";
+ }
+
+ $cmd .= " -p '$pwd'";
+ $cmd .= " -c \"$fname\"" if ( defined $fname );
+ $cmd .= " -d \"$home\"" if ( defined $home );
+ $cmd .= ' -G ' . join( ',', @groups );
+ system("sudo $cmd $user") == 0
+ or die "sudo $cmd $user failed: $?";
+ }
+}
+
+## setup tacacs+ server info
+# add tacacs to PAM file
+sub add_tacacs {
+ my $param_string = shift;
+ my $pam = shift;
+
+ my $cmd =
+ 'sudo sh -c "'
+ . 'sed -i \'s/^\('
+ . "$pam"
+ . '\trequired\tpam_unix\.so.*\)$/'
+ . "$pam"
+ . '\tsufficient\tpam_tacplus.so\t'
+ . "$param_string # Vyatta"
+ . '\n\1/\' '
+ . "/etc/pam.d/common-$pam\"";
+
+ system($cmd);
+ return 0 if ( $? >> 8 );
+ return 1;
+}
+
+# remove tacacs from PAM files
+sub remove_tacacs {
+ my $cmd =
+ 'sudo sh -c "'
+ . 'sed -i \'/\(.*pam_tacplus.*# Vyatta\)/ D\' '
+ . '/etc/pam.d/common-auth '
+ . '/etc/pam.d/common-account '
+ . '/etc/pam.d/common-session "';
+
+ system($cmd);
+ return 0 if ($? >> 8);
+ return 1;
+}
+
+# main tacacs
+# There is a race confition in here betwen radius and tacacs currently.
+# Also should probably add a chack to see if we ned to actually reconfig
+# PAM rather than jusy doing it each commit.
+# Finally, service and protocol will need to be removed. They are just
+# in there for troubleshootig purposes right now.
+#
+my $tconfig = new Vyatta::Config;
+if ($tconfig->isDeleted("system login tacacs-plus")) { remove_tacacs; }
+$tconfig->setLevel("system login tacacs-plus");
+my @tacacs_params = $tconfig->listNodes();
+
+if ( scalar(@tacacs_params) > 0 ) {
+ remove_tacacs;
+ my ($acctall, $debug, $firsthit, $noencrypt);
+ if ( $tconfig->exists("acct-all") ) { $acctall = 1; }
+ if ( $tconfig->exists("debug") ) { $debug = 1; }
+ if ( $tconfig->exists("first-hit") ) { $firsthit = 1; }
+ if ( $tconfig->exists("no-encrypt") ) { $noencrypt = 1; }
+ my $protocol = $tconfig->returnValue("protocol");
+ my $secret = $tconfig->returnValue("secret");
+ my $server = $tconfig->returnValue("server");
+ my $service = $tconfig->returnValue("service");
+
+ if ( $server ne '' && $secret ne '') {
+ my ($authstr, $accountstr, $sessionstr, $ip);
+ my @servers = split /\s/, $server;
+
+ ## 3 common options
+ # encrypt this session
+ if (! $noencrypt ) { $authstr = "encrypt "; }
+ # single secret
+ $authstr .= "secret=$secret ";
+ # and debug
+ if ($debug) { $authstr .= "debug "; }
+
+ ## now they get specific
+ $accountstr = $sessionstr = $authstr;
+
+ # can be multiple servers for auth and session
+ foreach my $ip (@servers) {
+ $authstr .= "server=$ip ";
+ $sessionstr .= "server=$ip ";
+ }
+
+ # first hit for auth
+ if ($firsthit) { $authstr .= "firsthit "; }
+
+ # acctall for session
+ if ($acctall) { $sessionstr .= "acctall "; }
+
+ # service and protocol for account and session
+ if ($service) { $accountstr .= "service=$service "; $sessionstr .= "service=$service "; }
+ if ($protocol) { $accountstr .= "protocol=$protocol "; $sessionstr .= "protocol=$protocol "; }
+
+ add_tacacs("$authstr", "auth");
+ add_tacacs("$accountstr", "account");
+ add_tacacs("$sessionstr", "session");
+ }
+ else { exit 1; }
+}
+## end tacacs
+
+my $PAM_RAD_CFG = '/etc/pam_radius_auth.conf';
+my $PAM_RAD_BEGIN = '# BEGIN Vyatta Radius servers';
+my $PAM_RAD_END = '# END Vyatta Radius servers';
+
+sub is_pam_radius_present {
+ open( my $auth , '<' , '/etc/pam.d/common-auth' )
+ or die "Cannot open /etc/pam.d/common-auth\n";
+
+ my $present;
+ while (<$auth>) {
+ if (/\ssufficient\spam_radius_auth\.so$/) {
+ $present = 1;
+ last;
+ }
+ }
+ close $auth;
+ return $present;
+}
+
+sub remove_pam_radius {
+ return 1 if ( !is_pam_radius_present() );
+ my $cmd =
+ 'sudo sh -c "'
+ . 'sed -i \'/\tsufficient\tpam_radius_auth\.so$/d;'
+ . '/\tpam_unix\.so /{s/ use_first_pass$//}\' '
+ . '/etc/pam.d/common-auth && '
+ . 'sed -i \'/\tsufficient\tpam_radius_auth\.so$/d\' '
+ . '/etc/pam.d/common-account"';
+ system($cmd);
+ return 0 if ( $? >> 8 );
+ return 1;
+}
+
+sub add_pam_radius {
+ return 1 if ( is_pam_radius_present() );
+ my $cmd =
+ 'sudo sh -c "'
+ . 'sed -i \'s/^\(auth\trequired\tpam_unix\.so.*\)$'
+ . '/auth\tsufficient\tpam_radius_auth.so\n\1 use_first_pass/\' '
+ . '/etc/pam.d/common-auth && '
+ . 'sed -i \'s/^\(account\trequired\tpam_unix\.so.*\)$'
+ . '/account\tsufficient\tpam_radius_auth.so\n\1/\' '
+ . '/etc/pam.d/common-account"';
+ system($cmd);
+ return 0 if ( $? >> 8 );
+ return 1;
+}
+
+sub remove_radius_servers {
+ system( "sudo sed -i '/^$PAM_RAD_BEGIN\$/,/^$PAM_RAD_END\$/{d}' "
+ . "$PAM_RAD_CFG" );
+ return 0 if ( $? >> 8 );
+ return 1;
+}
+
+sub add_radius_servers {
+ my $str = shift;
+ system( "sudo sh -c \""
+ . "echo '$PAM_RAD_BEGIN\n$str$PAM_RAD_END\n' >> $PAM_RAD_CFG\"" );
+ return 0 if ( $? >> 8 );
+ return 1;
+}
+
+# handle "radius-server"
+my $rconfig = new Vyatta::Config;
+$rconfig->setLevel("system login radius-server");
+my %servers = $rconfig->listNodeStatus();
+my @server_keys = sort keys %servers;
+if ( scalar(@server_keys) <= 0 ) {
+
+ # all radius servers deleted
+ exit 1 if ( !remove_pam_radius() );
+ exit 0;
+}
+
+# we have some servers
+my $all_deleted = 1;
+my $server_str = '';
+remove_radius_servers();
+for my $server (@server_keys) {
+ if ( $servers{$server} ne 'deleted' ) {
+ $all_deleted = 0;
+ my $port = $rconfig->returnValue("$server port");
+ my $secret = $rconfig->returnValue("$server secret");
+ my $timeout = $rconfig->returnValue("$server timeout");
+ $server_str .= "$server:$port\t$secret\t$timeout\n";
+ }
+}
+
+if ($all_deleted) {
+
+ # all radius servers deleted
+ exit 1 if ( !remove_pam_radius() );
+} else {
+ exit 1 if ( !add_radius_servers($server_str) );
+ exit 1 if ( !add_pam_radius() );
+}
+
+exit 0;
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