Revert "Split login authentication configuration into three scripts"

This reverts commit fd605ab5d4ce4aa4015089042afd90f6e5c6ba59.

1 files changed, 327 insertions, 0 deletions

diff --git a/scripts/system/vyatta_update_login.pl b/scripts/system/vyatta_update_login.pl
new file mode 100755
index 00000000..a28224f8
--- /dev/null
+++ b/scripts/system/vyatta_update_login.pl
@@ -0,0 +1,327 @@
+#!/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;