--- doc/install/linux/install.pl	2018/06/20 12:12:39	1.45
+++ doc/install/linux/install.pl	2018/07/11 01:58:41	1.46
@@ -26,6 +26,7 @@
 use strict;
 use File::Copy;
 use Term::ReadKey;
+use Sys::Hostname::FQDN();
 use DBI;
 use Cwd();
 use File::Basename();
@@ -75,7 +76,7 @@ if (!open(LOG,">>loncapa_install.log"))
           &mt('Stopping execution.')."\n";
     exit;
 } else {
-    print LOG '$Id: install.pl,v 1.45 2018/06/20 12:12:39 raeburn Exp $'."\n";
+    print LOG '$Id: install.pl,v 1.46 2018/07/11 01:58:41 raeburn Exp $'."\n";
 }
 
 #
@@ -280,6 +281,26 @@ sub get_distro {
     return ($distro,$packagecmd,$updatecmd,$installnow);
 }
 
+sub get_hostname {
+    my $hostname;
+    print &mt('Enter the hostname of this server, e.g., loncapa.somewhere.edu'."\n");
+    my $choice = <STDIN>;
+    chomp($choice);
+    $choice =~ s/(^\s+|\s+$)//g;
+    if ($choice eq '') {
+        print &mt("Hostname you entered was either blank or contanied only white space.\n");
+    } elsif ($choice =~ /^[\w\.\-]+$/) {
+        $hostname = $choice;
+    } else {
+        print &mt("Hostname you entered was invalid --  a hostname may only contain letters, numbers, - and .\n");
+    }
+    while ($hostname eq '') {
+        $hostname = &get_hostname();
+    }
+    print "\n";
+    return $hostname;
+}
+
 sub check_prerequisites {
     my ($packagecmd,$distro) = @_;
     my $gotprereqs;
@@ -389,7 +410,8 @@ sub check_required {
         return ($distro,$gotprereqs,$localecmd);
     }
     my ($mysqlon,$mysqlsetup,$mysqlrestart,$dbh,$has_pass,$has_lcdb,%recommended,
-        $downloadstatus,$filetouse,$production,$testing,$apachefw,$tostop,$uses_systemctl);
+        $downloadstatus,$filetouse,$production,$testing,$apachefw,$tostop,
+        $uses_systemctl,$hostname);
     my $wwwuid = &uid_of_www();
     my $wwwgid = getgrnam('www');
     if (($wwwuid eq '') || ($wwwgid eq '')) {
@@ -398,6 +420,16 @@ sub check_required {
     unless( -e "/usr/local/sbin/pwauth") {
         $recommended{'pwauth'} = 1;
     }
+    my $hostname = Sys::Hostname::FQDN::fqdn();
+    if ($hostname eq '') {
+        $hostname =&get_hostname();
+    } else {
+        print &mt("Hostname detected: $hostname. Is that correct? ~[Y/n~]");
+        if (!&get_user_selection(1)) {
+            $hostname =&get_hostname();
+        }
+    }
+    print_and_log(&mt('Hostname is [_1]',$hostname)."\n");
     $mysqlon = &check_mysql_running($distro);
     if ($mysqlon) {
         my $mysql_has_wwwuser = &check_mysql_wwwuser();
@@ -429,12 +461,13 @@ sub check_required {
     ($recommended{'firewall'},$apachefw) = &chkfirewall($distro);
     ($recommended{'runlevels'},$tostop,$uses_systemctl) = &chkconfig($distro,$instdir);
     $recommended{'apache'} = &chkapache($distro,$instdir);
+    $recommended{'apachessl'} = &chkapachessl($distro,$instdir,$hostname);
     $recommended{'stopsrvcs'} = &chksrvcs($distro,$tostop);
     ($recommended{'download'},$downloadstatus,$filetouse,$production,$testing) 
         = &need_download();
     return ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,
             $mysqlrestart,\%recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,
-            $filetouse,$production,$testing,$apachefw,$uses_systemctl);
+            $filetouse,$production,$testing,$apachefw,$uses_systemctl,$hostname);
 }
 
 sub check_mysql_running {
@@ -849,6 +882,44 @@ sub chkapache {
     return $fixapache;
 }
 
+sub chkapachessl {
+    my ($distro,$instdir,$hostname) = @_;
+    my $fixapachessl = 1;
+    my $stdconf = "$instdir/loncapassl.conf";
+    if (!-e $stdconf) {
+        $fixapachessl = 0;
+        print &mt('Warning: No LON-CAPA SSL Apache configuration file found for installation check.')."\n";
+    } else {
+        my $sslfile; 
+        if ($distro =~ /^(debian|ubuntu)(\d+)$/) {
+            $sslfile = '/etc/apache2/sites-available/loncapassl.conf';
+        } elsif ($distro =~ /(suse|sles)/) {
+            $sslfile = '/etc/apache2/vhosts.d/loncapassl.conf';
+        } else {
+            $sslfile = '/etc/httpd/conf.d/loncapassl.conf';
+        }
+        if ((-e $sslfile) && (-e $stdconf))  {
+            if (open(PIPE, "diff -y -bi --suppress-common-lines $stdconf $sslfile |")) {
+                my $diffres = <PIPE>;
+                close(PIPE);
+                chomp($diffres);
+                if ($diffres =~ /^\QServerName internal-{[[[[Hostname]]]]}\E\s+\|\s+\QServerName internal-\E$hostname$/) {
+                    $fixapachessl = 0;
+                }
+            }
+        }
+        unless ($fixapachessl) {
+            if ($distro =~ /^(debian|ubuntu)(\d+)$/) {
+                unless ((-l '/etc/apache2/sites-enabled/loncapassl.conf') &&
+                        (readlink('/etc/apache2/sites-enabled/loncapassl.conf') eq '/etc/apache2/sites-available/loncapassl.conf')) {
+                    print_and_log(&mt("Warning, use: 'sudo a2ensite loncapassl.conf' to activate LON-CAPA SSL Apache config\n"));
+                }
+            }
+        }
+    }
+    return $fixapachessl;
+}
+
 sub chksrvcs {
     my ($distro,$tostop) = @_;
     my %stopsrvcs;
@@ -1240,11 +1311,12 @@ print "
 ".&mt('3.')." ".&mt('Set-up the MySQL database.')."
 ".&mt('4.')." ".&mt('Set-up MySQL permissions.')."
 ".&mt('5.')." ".&mt('Configure Apache web server.')."
-".&mt('6.')." ".&mt('Configure start-up of services.')."
-".&mt('7.')." ".&mt('Check firewall settings.')."
-".&mt('8.')." ".&mt('Stop services not used by LON-CAPA,')."
+".&mt('6.')." ".&mt('Configure SSL for Apache web server.')."
+".&mt('7.')." ".&mt('Configure start-up of services.')."
+".&mt('8.')." ".&mt('Check firewall settings.')."
+".&mt('9.')." ".&mt('Stop services not used by LON-CAPA,')."
    ".&mt('i.e., services for a print server: [_1] daemon.',"'cups'")."
-".&mt('9.')." ".&mt('Download LON-CAPA source code in readiness for installation.')."
+".&mt('10.')." ".&mt('Download LON-CAPA source code in readiness for installation.')."
 
 ".&mt('Typically, you will run this script only once, when you first install LON-CAPA.')." 
 
@@ -1274,25 +1346,26 @@ chomp($instdir);
 
 my %callsub;
 my @actions = ('wwwuser','pwauth','mysql','mysqlperms','apache',
-               'runlevels','firewall','stopsrvcs','download');
+               'apachessl','runlevels','firewall','stopsrvcs','download');
 my %prompts = &texthash( 
     wwwuser    => "Create the 'www' user?",
     pwauth     => 'Install the package LON-CAPA uses to authenticate users?',
     mysql      => 'Set-up the MySQL database?',
     mysqlperms => 'Set-up MySQL permissions?',
     apache     => 'Configure Apache web server?',
+    apachessl  => 'Configure SSL for Apache web server?', 
     runlevels  => 'Set overrides for start-up order of services?',
     firewall   => 'Configure firewall settings for Apache',
     stopsrvcs  => 'Stop extra services not required on a LON-CAPA server?',
     download   => 'Download LON-CAPA source code in readiness for installation?',
 );
 
-print "\n".&mt('Checking system status ...')."\n";
+print "\n".&mt('Checking system status ...')."\n\n";
 
 my $dsn = "DBI:mysql:database=mysql";
 my ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,$mysqlrestart,
     $recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,$filetouse,$production,
-    $testing,$apachefw,$uses_systemctl) = &check_required($instdir,$dsn);
+    $testing,$apachefw,$uses_systemctl,$hostname) = &check_required($instdir,$dsn);
 if ($distro eq '') {
     print "\n".&mt('Linux distribution could not be verified as a supported distribution.')."\n".
           &mt('The following are supported: [_1].',
@@ -1320,7 +1393,6 @@ if (!$gotprereqs) {
           &mt('The following command can be used to install the package (and dependencies):')."\n\n".
           $updatecmd."\n\n";
     if ($installnow eq '') {
-        print &mt('Stopping execution.')."\n";
         exit;
     } else {
         print &mt('Run command? ~[Y/n~]');
@@ -1460,16 +1532,36 @@ if ($dbh) {
 
 if ($callsub{'apache'}) {
     if ($distro =~ /^(suse|sles)/) {
-        &copy_apache2_suseconf($instdir);
+        &copy_apache2_suseconf($instdir,$hostname);
     } elsif ($distro =~ /^(debian|ubuntu)/) {
-        &copy_apache2_debconf($instdir,$distro);
+        &copy_apache2_debconf($instdir,$distro,$hostname);
     } else {
-        &copy_httpd_conf($instdir,$distro);
+        &copy_httpd_conf($instdir,$distro,$hostname);
     }
 } else {
     print_and_log(&mt('Skipping configuration of Apache web server.')."\n");
 }
 
+if ($callsub{'apachessl'}) {
+    if ($distro =~ /^(suse|sles)/) {
+        &copy_apache_sslconf_file($instdir,'/etc/apache2/vhosts.d',$hostname);
+    } elsif ($distro =~ /^(debian|ubuntu)/) {
+        my $apache2_sites_available_dir = '/etc/apache2/sites-available';
+        if (&copy_apache_sslconf_file($instdir,$apache2_sites_available_dir,$hostname)) {
+            my $apache2_sites_enabled_dir = '/etc/apache2/sites-enabled';
+            my $made_symlink =  eval { symlink("$apache2_sites_available_dir/loncapassl.conf","$apache2_sites_enabled_dir/loncapassl.conf"); 1 };
+            if ($made_symlink) {
+                print_and_log(&mt('Enabling "[_1]" Apache SSL configuration.','loncapassl.conf')."\n");  
+            }
+        }
+    } else {
+        &copy_apache_sslconf_file($instdir,'/etc/httpd/conf.d',$hostname);
+    }
+    print_and_log("\n");
+} else {
+    print_and_log(&mt('Skipping configuration of SSL for Apache web server.')."\n");
+}
+
 if ($callsub{'runlevels'}) {
     my $count = 0;
     if (ref($recommended) eq 'HASH') {
@@ -1944,7 +2036,7 @@ sub get_mysql_version {
 ###########################################################
 
 sub copy_httpd_conf {
-    my ($instdir,$distro) = @_;
+    my ($instdir,$distro,$hostname) = @_;
     my $configfile = 'httpd.conf';
     if ($distro =~ /^(?:centos|rhes|scientific)(\d+)$/) {
         if ($1 >= 7) {
@@ -1967,6 +2059,47 @@ sub copy_httpd_conf {
     print_and_log("\n");
 }
 
+###############################################
+##
+## Copy/Modify loncapassl.conf
+##
+###############################################
+
+sub copy_apache_sslconf_file {
+    my ($instdir,$targetdir,$hostname) = @_;
+    my ($success,$error);
+    if (-e "$instdir/loncapassl.conf") {
+        if (open(my $fh,'<',"$instdir/loncapassl.conf")) {
+            if (open(my $out,'>',"$targetdir/loncapassl.conf")) {
+                while (<$fh>) {
+                    if (/^\QServerName internal-\E/) {
+                        chomp();
+                        s/^(\QServerName internal-\E)(.*)$/$1$hostname\n/;
+                    }
+                    print $out $_;
+                }
+                $success = 1;
+            } else {
+                $error = "Could not write to $targetdir/loncapassl.conf";
+            }
+        } else {
+            $error = "Could not read from $instdir/loncapassl.conf";
+        }
+    } else {
+        $error = "File to copy from: $instdir/loncapassl.conf does not exist";
+    }
+    if ($success) {
+        print_and_log(&mt('Successfully copied [_1] to [_2].',"'loncapassl.conf'","'$targetdir/loncapassl.conf'")."\n");
+        chmod(0444,"$targetdir/loncapassl.conf");
+    } else {
+        print_and_log(&mt('Failed to copy [_1] to [_2].',"'loncapassl.conf'","'$targetdir/loncapassl.conf'")."\n");
+        if ($error) {
+            print_and_log("$error\n");
+        }
+    }
+    return $success;
+}
+
 #########################################################
 ##
 ## Ubuntu/Debian -- copy our loncapa configuration file to
@@ -1975,7 +2108,7 @@ sub copy_httpd_conf {
 #########################################################
 
 sub copy_apache2_debconf {
-    my ($instdir,$distro) = @_;
+    my ($instdir,$distro,$hostname) = @_;
     my $apache2_mods_enabled_dir = '/etc/apache2/mods-enabled';
     my $apache2_mods_available_dir = '/etc/apache2/mods-available';
     foreach my $module ('headers.load','expires.load') {
@@ -2037,7 +2170,7 @@ sub copy_apache2_debconf {
 ###########################################################
 
 sub copy_apache2_suseconf {
-    my ($instdir) = @_;
+    my ($instdir,$hostname) = @_;
     print_and_log(&mt('Copying the LON-CAPA [_1] to [_2].',
                   "'default-server.conf'",
                   "'/etc/apache2/default-server.conf'")."\n");