--- capa/capa51/Discuss/Ver1.3/Attic/capadiscuss	1999/09/28 21:27:46	1.1.1.1
+++ capa/capa51/Discuss/Ver1.3/Attic/capadiscuss	2000/03/22 21:08:02	1.8
@@ -1,13 +1,15 @@
 #!/usr/ucb/perl
 #
 # CAPA Discussion Forum
-# version 1.3
+# version 1.3.0
 #
 # Michigan State University
 # Department of Physics and Astronomy
 #
 # Ryan J. Shaltry
 # tech4@msue.msu.edu
+# Guy Albertelli
+# albertel@msu.edu
 
 print "Content-type: text/html\n\n";
 
@@ -49,12 +51,18 @@ $validadmin = "unchecked";
   $psetid   = $form{'PSETID'};
 if ($snum eq "A12345678") {$debug=1;}
 if ($snum eq "a12345678") {$debug=1;}
+$debug=0;
   if($psetid eq "") { $psetid = $setid; }
 if ($debug) {print "GetTeacherInfo<BR>";$BenchmarkTa = new Benchmark;}
   &GetTeacherInfo;
 if($debug) {$BenchmarkTb = new Benchmark;print "<BR>",timestr(timediff($BenchmarkTb,$BenchmarkTa)),"\n";}
 
-  # check for valid studentnumber/capaid
+  # check if student is banned from forum
+if ($debug) {print "BanUser<BR>";$BenchmarkTa = new Benchmark;}
+if (&BanUser) {exit;}
+if($debug) {$BenchmarkTb = new Benchmark;print "<BR>",timestr(timediff($BenchmarkTb,$BenchmarkTa)),"\n";}
+
+  # check for valid studentnumber/capaid, an exit will occur here if the set wasn't open
 if ($debug) {print "ValidateUser<BR>";$BenchmarkTa = new Benchmark;}
   &ValidateUser;
 if($debug) {$BenchmarkTb = new Benchmark;print "<BR>",timestr(timediff($BenchmarkTb,$BenchmarkTa)),"\n";}
@@ -100,12 +108,57 @@ exit;
 #######################
 ## Begin Subroutines ##
 #######################
+sub GetSetList {
+  opendir(DDIR,"$capadir/$class/discussion");
+  @sets = grep(/^[0-9]+$/,sort(readdir(DDIR)));
+  closedir(DDIR);
+  if ($debug) {print "<br> Sets:". @sets ."<BR>\n";}
+}
+
+sub SetListHeader {
+  $pdset = "<select name=\"SETID\">\n";
+  foreach $setnum(@sets) {
+    $selected = "";
+    if($setnum eq $setid) { $selected = "selected"; }
+    $pdset .= "<option value=\"$setnum\" $selected>$setnum\n";
+  }
+  $pdset .= "</select>\n";
+}
+
+sub GetInfoList {
+  local(@temp,@alldir,@setdir);
+#  if ($debug) {print "<br> GetInfoList <br>";}
+  opendir(DDIR,"$capadir/$class/discussion");
+  @alldir = sort(grep(/.info$/,readdir(DDIR)));
+  closedir(DDIR);
+
+  opendir(FORUM,"$capadir/$class/discussion/$setid");
+  @setdir = sort(grep(/.info$/,readdir(FORUM)));
+  closedir(FORUM);
+
+  foreach $file(@setdir) { @setdir2 = (@setdir2,"$setid/$file"); }
+  @infofiles = (@alldir,@setdir2);
+  $infostring = "";
+#  if ($debug) {print "<br> GetInfoList" . @infofiles."<br>";}
+  foreach $infofile(@infofiles) {
+#    if ($debug) {print "<br> GetInfoList" . $infofile."<br>";}
+    @temp = reverse split /\//, $infofile;
+    $infodesc = $temp[0];
+    $infodesc =~ s/.info//g;
+    $infodesc =~ s/_/ /g;
+    $infostring .= &InfoButtonHTML;
+  }
+  if ($infostring ne "") {
+ #   $infostring = "</tr><tr>" . $infostring;
+  }
+#  if ($debug) {print "<br> GetInfoList" . $infostring."<br>";}
+}
 
 sub NewSet {
   &Log("NewSet");
 
   if($setid <= $psetid) {   #grab capaid
-    if ($debug) {print "ViewSet<BR>";$BenchmarkTa = new Benchmark;}
+    if ($debug) {print "NewSet<BR>";$BenchmarkTa = new Benchmark;}
     @allcapaid = `allcapaid -s $setid -e $setid -stu $snum -c $capadir/$class -i`;
 
     $capaid = $allcapaid[2];
@@ -116,23 +169,16 @@ if($debug) {$BenchmarkTb = new Benchmark
     return;
   }
 
-  opendir(DDIR,"$capadir/$class/discussion");
-    @sets = grep(/[0-9]/,sort(readdir(DDIR)));
-  closedir(DDIR);
-
-  $pdset = "<select name=\"SETID\">\n";
-  foreach $setnum(@sets) {
-    $selected = "";
-    if($setnum eq $setid) { $selected = "selected"; }
-    $pdset .= "<option value=\"$setnum\" $selected>$setnum\n";
-  }
-  $pdset .= "</select>\n";
-
+  if ($debug) { print "<br> GetSetList\n"; }
+  &GetSetList;
+  if ($debug) { print "<br> EndGetSetList\n"; }
+  &SetListHeader;
   &NewSetHTML;
   #exit;
 }
 
 sub ViewSet {
+  local($hidden);
   if ($debug) {print "InsideViewSet<BR>";$BenchmarkTa = new Benchmark;}
   &Log("ViewSet");
   &CheckAdmin;
@@ -143,20 +189,13 @@ sub ViewSet {
 
   $capasbin = "$capasbin/$teachdir/capasbin";
   &SetJumpBox;
+  $backfunction="viewset";
+  &GetInfoList;
+
   opendir(FORUM,"$capadir/$class/discussion/$setid");
     @dir = sort(readdir(FORUM));
   closedir(FORUM);
 
-  @infofiles = grep(/.info/,@dir);
-  $infostring = "";
-  $backfunction = "viewset";
-  foreach $infofile(@infofiles) {
-    $infodesc = $infofile;
-    $infodesc =~ s/.info//g;
-    $infodesc =~ s/_/ /g;
-    $infostring .= &InfoButtonHTML;
-  }
-
   foreach $i(@dir) {
     $probnum = &RemZero(substr($i,0,6));
     $found[$probnum]++;
@@ -183,6 +222,7 @@ if($debug) {$BenchmarkTb = new Benchmark
 
   $col = 1;
   for($probnum=1; $probnum<=$maxprobs; $probnum++) {
+    $hidden=0;
     if($col eq "1" && $probnum > $col1size && $bigtable eq "yes") {
       $col = 2;
       &ViewSetEndColHTML;
@@ -194,13 +234,19 @@ if($debug) {$BenchmarkTb = new Benchmark
       closedir(MSG);
       foreach $msg(@msgs) {
         if(&RemZero(substr($msg,0,6)) eq $probnum) {
-          push(@good,$msg);
+          &OpenMsg("$capadir/$class/discussion/$setid/$msg");
+          if(!($status eq "hidden" && $validadmin ne "yes")) { 
+            push(@good,$msg); 
+          } else { $hidden++; }
         }
       }
-
-      &OpenMsg("$capadir/$class/discussion/$setid/$good[$#good]");
-      $lastpost = "$date at $time";
-      $posts = $found[$probnum];
+      $posts = $found[$probnum]-$hidden;
+      if ($posts >0) {
+         &OpenMsg("$capadir/$class/discussion/$setid/$good[$#good]");
+         $lastpost = "$date at $time";
+      } else {
+         $lastpost = "--";
+      }
     }
     else {
       $lastpost = "--";
@@ -263,6 +309,7 @@ sub ViewProblem {
       }
 
       if($msgcount eq "1") {
+	&GetInfoList;
         $postbutton = &ReplyButtonHTML;
         &ProblemJumpBox;
         &ViewProblemTopHTML;
@@ -296,14 +343,15 @@ sub ViewProblem {
           $hidebutton = &UnHideButtonHTML;
           $messagenote = "Hidden by $hiddenuser on $hiddendate at $hiddentime from $hiddenaddr";
         }
-	$message =~ s/</&lt;/g;
-	$message =~ s/>/&gt;/g;
+#	$message =~ s/</&lt;/g;
+#	$message =~ s/>/&gt;/g;
         &ViewProblemGutsHTML;
       }
     }
   }
 
   if($msgfind eq "no") {
+    &GetInfoList;
     $postbutton = &PostNewButtonHTML;
     &ProblemJumpBox;
     &ViewProblemTopHTML;
@@ -317,7 +365,8 @@ sub ViewProblem {
 }
 
 sub ViewInfoFile {
-  open(INFOFILE,"$capadir/$class/discussion/$setid/$file");
+  &Log("InfoFile");
+  open(INFOFILE,"$capadir/$class/discussion/$file");
     @file = <INFOFILE>;
   closedir(INFOFILE);
 
@@ -549,10 +598,24 @@ sub WriteMsg {
   $filename = shift(@_);
   # add sr to grab e-mail address of user
 
+  
+  # <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG> <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
+  %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1, BR=>1, TT=>1, STRONG=>1,
+	 BLOCKQUOTE=>1, DIV=>1, IMG=>1);
+
   $message = $form{'message'};
-  $message =~ s/\n\r\n/<p>/g;
+
+  $message =~ s/((\n\r)|(\n))\n/<p>/g;
   $message =~ s/\n/<br>/g;
 
+  $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
+    {($html{uc($2)}&(length($1)<1000))?"\<$1":"\&lt;$1"}/ge;
+  $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
+    {($html{uc($2)}&(length($1)<1000))?"$1\>":"$1\&gt;"}/ge;
+
+#  $message =~ s/</&lt;/g;
+#  $message =~ s/>/&gt;/g;
+
   # check if posted anonymously
   if($form{'ANONYMOUS'} eq "yes") {
     $username = "Anonymous|$username";
@@ -611,6 +674,7 @@ sub CheckAdmin {
 	last;
       }
     }
+	if ($debug) { print "Admin Sections: ".$adminsection;}
     @adminsections = split(/\,/,$adminsection);
     for ($asection=0; $asection <= $#adminsections; $asection++) {
       $adminsections[$asection]=&RemZero($adminsections[$asection])
@@ -622,10 +686,12 @@ sub CheckAdmin {
     
     $snum =~ tr/a-z/A-Z/;
     LINE: foreach $line(@classl) {
-      ($course,$coursenum,$section,$stunum,$a) = split(/\ +/,$line);
+      $section= substr $line, 10, 3;
+      $stunum= substr $line, 14, 9;
       $stunum =~ tr/a-z/A-Z/;
       if ( $stunum ne $snum ) { next LINE;}
       $section = &RemZero($section);
+	if ($debug) {print "<BR>".$stunum."Is in section:".$section."<BR>";}
       foreach $asection(@adminsections) {
 	if($section eq $asection ) {
 	  $validadmin = "yes";
@@ -637,6 +703,30 @@ sub CheckAdmin {
   if($validadmin eq "no" && $mode eq "kill") { &NotAdminHTML; }
 }
 
+sub BanUser {
+  local (@capaconfig,$line,$command,$value,$ban,@banned,$result);
+  $result = 0;
+  open(CAPACONFIG,"$capadir/$class/capa.config");
+  @capaconfig = <CAPACONFIG>;
+  close(CAPACONFIG);
+  foreach $line(@capaconfig) {
+    chop $line;
+    ($command,$value) = split(/\ =\ /,$line);
+    if($command eq "banned_users") { $ban = $value; last; }
+  }
+  
+  if ($debug) { print "Banned Users: ".$ban }
+  @banned = split(/\,/,$ban);
+  $snum =~ tr/a-x/A-Z/;
+  foreach $ban (@banned) {
+    if ($debug) {print $ban . "is Banned <br>";}
+    $ban =~ tr/a-z/A-Z/;
+    $ban =~ tr/\ //d;
+    if ( $ban eq $snum) { &BannedMessageHTML; $result=1 }
+  }
+  return $result
+}
+
 sub ValidateUser {
   local(@allcapaid,@classl,$line);
 
@@ -653,16 +743,29 @@ sub ValidateUser {
   if($valid eq "no") { &InvalidVarsHTML; }
 
   # check w/ allcapaid program
-  @allcapaid = `allcapaid -s $setid -e $setid -stu $snum -c $capadir/$class -i`;
+  @allcapaid = `allcapaid -s $setid -e $setid -stu $snum -c $capadir/$class -i -checkopen`;
 
   chop $allcapaid[2];
   chop $allcapaid[2];
+  if ($debug) {print "capaid:" . $allcapaid[2] . "<BR>\n";}
   if($allcapaid[2] ne $capaid) {
-    if($action ne "newset") { &BadPassHTML; }
+    if ($allcapaid[2] =~ /Open/) { &NotOpen; exit; }
+    if($action ne "newset") { &BadPassHTML; exit; }
     #&NewSet;
   }
 }
 
+sub NotOpen {
+  &GetSetList;
+  &SetListHeader;
+  &ViewSetTitleHTML;
+print <<NotOpen2;
+This set is not yet open. Please choose a different set.
+</body>
+</html>
+NotOpen2
+}
+
 sub UserInfo {
   local($line,@classl,$last,$first,$middle);
 
@@ -703,17 +806,8 @@ sub ProblemJumpBox {
 }
 
 sub SetJumpBox {
-  opendir(DDIR,"$capadir/$class/discussion");
-    @sets = grep(/[0-9]/,sort(readdir(DDIR)));
-  closedir(DDIR);
-
-  $pdset = "<select name=\"SETID\">\n";
-  foreach $set(@sets) {
-    $selected = "";
-    if($set eq $setid) { $selected = " selected"; }
-    $pdset .= "  <option value=\"$set\"$selected>$set\n";
-  }
-  $pdset .= "</select>";
+  &GetSetList;
+  &SetListHeader;
 }
 
 sub AddZero {
@@ -754,7 +848,7 @@ sub form_info {
 
   foreach $pair (@pairs) {
      ($name, $value) = split(/=/, $pair);
-
+     if ($name eq "message") {$allow_html=1;} else {$allow_html=0;}
      # Un-Webify plus signs and %-encoding
      $value =~ tr/+/ /;
      $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
@@ -774,6 +868,8 @@ sub GetDateTime  {
   ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime (time);
   $mon++;
 
+  $year=$year+1900;
+
   if ($hour < 12) {
   $AMPM = "AM";
   }
@@ -811,7 +907,7 @@ sub Log {
 
   &Lock("lock.file");
   open(LOG,">>$capadir/$class/discussion/logs/access.log");
-    print LOG "$snum|$capaid|$username|$email|$logmsg|$setid|$probnum|$HyphenDate|$Time\n";
+    print LOG "$snum|$capaid|$username|$email|$logmsg|$setid|$probnum|$HyphenDate|$Time|$file\n";
   close(LOG);
   &Unlock("lock.file");
 }