--- loncom/debugging_tools/modify_config_files.pl	2024/06/28 12:46:47	1.24
+++ loncom/debugging_tools/modify_config_files.pl	2024/07/31 03:39:20	1.29
@@ -2,7 +2,7 @@
 #
 # The LearningOnline Network
 #
-# $Id: modify_config_files.pl,v 1.24 2024/06/28 12:46:47 raeburn Exp $
+# $Id: modify_config_files.pl,v 1.29 2024/07/31 03:39:20 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -49,6 +49,10 @@ Linux distro/version being used.  The fi
 /etc/sysconfig/rhn/sources (for RHEL4), or /etc/yum.repos.d/loncapa.repo
 (for Fedora >= 21; Oracle Linux; AlmaLinux; RockyLinux; CentOS/RHEL >= 8).
 
+The script also modifies /home/www/.inputrc on Linux distros which have 
+readline 8.1 or newer, i.e., CentOS/Scientific Linux/RHEL >= 9,
+Ubuntu >= 22, Debian >= 12, and Fedora >= 34.
+
 =head1 DESCRIPTION
 
 This script will modify /etc/my.cnf, /etc/mysql/my.cnf, 
@@ -56,7 +60,8 @@ This script will modify /etc/my.cnf, /et
 /etc/mysql/mariadb.conf.d/50-server.cnf,
 and /etc/yum.conf, /etc/yum.repos.d/loncapa.repo,
 /etc/apt/sources.list, /etc/apt/sources.list.d/loncapa.list or 
-/etc/sysconfig/rhn/sources to ensure certain parameters are set properly.
+/etc/sysconfig/rhn/sources and /home/www/.inputrc to ensure 
+certain parameters are set properly.
 
 The LON-CAPA yum repositories are added to /etc/yum.conf, 
 /etc/yum.repos.d/loncapa.repo, or /etc/sysconfig/rhn/sources
@@ -359,6 +364,133 @@ my $mysql_www_status =
                key     =>'password=',
                value   =>$loncapa_config->{'lonSqlAccess'}},]);
 
+my $needs_inputrc_check;
+if ($dist  =~ /^debian(\d+)$/) {
+    if ($1 >= 12) {
+        $needs_inputrc_check = 1;
+    }
+} elsif ($dist =~ /^ubuntu(\d+)$/) {
+    if ($1 >= 22) {
+        $needs_inputrc_check = 1;
+    }
+} elsif ($dist =~ /^(?:rhes|oracle|alma|rocky|centos)(\d+)(?:|\-stream)$/) {
+    if ($1 >= 9) {
+        $needs_inputrc_check = 1;
+    }
+} elsif ($dist =~ /^fedora(\d+)$/) {
+    if ($1 >= 34) {
+        $needs_inputrc_check = 1;
+    }
+}
+
+if ($needs_inputrc_check) {
+    my $bash_www_cnf = '/home/www/.inputrc';
+    if (!-e $bash_www_cnf) {
+        system("touch $bash_www_cnf");
+        if (open(my $fh,'>',$bash_www_cnf)) {
+            print $fh <<'END';
+$if R
+    set enable-bracketed-paste off
+$endif
+
+$if maxima
+    set enable-bracketed-paste off
+$endif
+END
+            close($fh);
+        } else {
+            warn "**** Error: could not open $bash_www_cnf to add 'set enable-bracketed-paste to off'";
+        }
+        my $wwwuid = getpwnam('www');
+        my $wwwgid = getgrnam('www');
+        if ($wwwuid!=$<) {
+            chown($wwwuid,$wwwgid,$bash_www_cnf);
+        }
+    } else {
+        my (%bracketed_paste_on,%bracketed_paste_off,@preserve,$condition);
+        $condition = '';
+        if (open(my $fh,'<',$bash_www_cnf)) {
+            while (my $line=<$fh>) {
+                chomp($line);
+                if ($line =~ /^\$if\s+(\w+)\s*$/) {
+                    if ($1 eq 'R') { 
+                        $condition = 'r';
+                    } elsif ($1 eq 'maxima') {
+                        $condition = 'maxima';
+                    } else {
+                        $condition = 'other';
+                    }
+                } elsif ($line =~ /^\$endif\s*$/) {
+                    $condition = '';
+                }
+                if ($line =~ /^\s*set\s+enable\-bracketed\-paste\s+(off|on)\s*$/) {
+                    if ($1 eq 'off') {
+                        if ($condition ne '') {
+                            $bracketed_paste_off{$condition} = 1;
+                        } else {
+                            $bracketed_paste_off{all} = 1;
+                        }
+                        push(@preserve,$line);
+                    } else {
+                        if ($condition ne '') {
+                            $bracketed_paste_on{$condition} = 1;
+                            if (($condition eq 'r') || ($condition eq 'maxima')) {
+                                push(@preserve,'    set enable-bracketed-paste off');
+                            } else {
+                                push(@preserve,$line); 
+                            }
+                        } else {
+                            $bracketed_paste_on{all} = 1;
+                            push(@preserve,$line);
+                        }
+                    }
+                } else {
+                    push(@preserve,$line);
+                }
+            }
+            close($fh);
+        }
+        if (($bracketed_paste_on{r} || $bracketed_paste_on{maxima}) ||
+            (!exists($bracketed_paste_off{r}) && !exists($bracketed_paste_on{r}) &&
+             !exists($bracketed_paste_off{maxima}) && !exists($bracketed_paste_on{maxima}))) {
+            if (open(my $fh,'>',$bash_www_cnf)) {
+                if (@preserve) {
+                    foreach my $entry (@preserve) {
+                        print $fh "$entry\n";
+                    }
+                    if (!exists($bracketed_paste_off{r}) && !exists($bracketed_paste_on{r})) {
+print $fh <<'END';
+$if R
+    set enable-bracketed-paste off
+$endif
+END
+                    }
+                    if (!exists($bracketed_paste_off{r}) && !exists($bracketed_paste_on{r})) {
+print $fh <<'END';
+$if maxima
+    set enable-bracketed-paste off
+$endif
+END
+                    }
+                } else {
+print $fh <<'END';
+$if R
+    set enable-bracketed-paste off
+$endif
+
+$if maxima
+    set enable-bracketed-paste off
+$endif
+END
+                }
+                close($fh);
+            } else {
+                warn "**** Error: could not open $bash_www_cnf to add 'set enable-bracketed-paste to off'";
+            }
+        }
+    }
+}
+
 my $exitvalue = 0;
 
 if ($mysql_global_status) { $exitvalue = 1; }