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Diff for /loncom/lond between versions 1.489.2.4 and 1.489.2.43.2.5

version 1.489.2.4, 2013/04/07 17:42:16 version 1.489.2.43.2.5, 2022/02/27 03:01:31
Line 15 Line 15
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
   
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
Line 55  use LONCAPA::lonssl; Line 54  use LONCAPA::lonssl;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
 use Apache::lonnet;  use Apache::lonnet;
 use Mail::Send;  use Mail::Send;
   use Crypt::Eksblowfish::Bcrypt;
   use Digest::SHA;
   use Encode;
   
 my $DEBUG = 0;       # Non zero to enable debug log entries.  my $DEBUG = 0;       # Non zero to enable debug log entries.
   
Line 130  my @passwderrors = ("ok", Line 132  my @passwderrors = ("ok",
    "pwchange_failure - lcpasswd Error filename is invalid");     "pwchange_failure - lcpasswd Error filename is invalid");
   
   
 #  The array below are lcuseradd error strings.:  
   
 my $lastadderror = 13;  
 my @adderrors    = ("ok",  
     "User ID mismatch, lcuseradd must run as user www",  
     "lcuseradd Incorrect number of command line parameters must be 3",  
     "lcuseradd Incorrect number of stdinput lines, must be 3",  
     "lcuseradd Too many other simultaneous pwd changes in progress",  
     "lcuseradd User does not exist",  
     "lcuseradd Unable to make www member of users's group",  
     "lcuseradd Unable to su to root",  
     "lcuseradd Unable to set password",  
     "lcuseradd Username has invalid characters",  
     "lcuseradd Password has an invalid character",  
     "lcuseradd User already exists",  
     "lcuseradd Could not add user.",  
     "lcuseradd Password mismatch");  
   
   
 # This array are the errors from lcinstallfile:  # This array are the errors from lcinstallfile:
   
 my @installerrors = ("ok",  my @installerrors = ("ok",
      "Initial user id of client not that of www",       "Initial user id of client not that of www",
      "Usage error, not enough command line arguments",       "Usage error, not enough command line arguments",
      "Source file name does not exist",       "Source filename does not exist",
      "Destination file name does not exist",       "Destination filename does not exist",
      "Some file operation failed",       "Some file operation failed",
      "Invalid table filename."       "Invalid table filename."
      );       );
Line 640  sub ConfigFileFromSelector { Line 623  sub ConfigFileFromSelector {
 #     String to send to client ("ok" or "refused" if bad file).  #     String to send to client ("ok" or "refused" if bad file).
 #  #
 sub PushFile {  sub PushFile {
     my $request = shift;          my $request = shift;
     my ($command, $filename, $contents) = split(":", $request, 3);      my ($command, $filename, $contents) = split(":", $request, 3);
     &Debug("PushFile");      &Debug("PushFile");
           
Line 670  sub PushFile { Line 653  sub PushFile {
   
     if($filename eq "host") {      if($filename eq "host") {
  $contents = AdjustHostContents($contents);   $contents = AdjustHostContents($contents);
       } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
           if ($contents eq '') {
               &logthis('<font color="red"> Pushfile: unable to install '
                       .$tablefile." - no data received from push. </font>");
               return 'error: push had no data';
           }
           if (&Apache::lonnet::get_host_ip($clientname)) {
               my $clienthost = &Apache::lonnet::hostname($clientname);
               if ($managers{$clientip} eq $clientname) {
                   my $clientprotocol = $Apache::lonnet::protocol{$clientname};
                   $clientprotocol = 'http' if ($clientprotocol ne 'https');
                   my $url = '/adm/'.$filename;
                   $url =~ s{_}{/};
                   my $ua=new LWP::UserAgent;
                   $ua->timeout(60);
                   my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
                   my $response=$ua->request($request);
                   if ($response->is_error()) {
                       &logthis('<font color="red"> Pushfile: unable to install '
                               .$tablefile." - error attempting to pull data. </font>");
                       return 'error: pull failed';
                   } else {
                       my $result = $response->content;
                       chomp($result);
                       unless ($result eq $contents) {
                           &logthis('<font color="red"> Pushfile: unable to install '
                                   .$tablefile." - pushed data and pulled data differ. </font>");
                           my $pushleng = length($contents);
                           my $pullleng = length($result);
                           if ($pushleng != $pullleng) {
                               return "error: $pushleng vs $pullleng bytes";
                           } else {
                               return "error: mismatch push and pull";
                           }
                       }
                   }
               }
           }
     }      }
   
     #  Install the new file:      #  Install the new file:
Line 1403  sub du2_handler { Line 1424  sub du2_handler {
 #    selected directory the filename followed by the full output of  #    selected directory the filename followed by the full output of
 #    the stat function is returned.  The returned info for each  #    the stat function is returned.  The returned info for each
 #    file are separated by ':'.  The stat fields are separated by &'s.  #    file are separated by ':'.  The stat fields are separated by &'s.
   #
   #    If the requested path contains /../ or is:
   #
   #    1. for a directory, and the path does not begin with one of:
   #        (a) /home/httpd/html/res/<domain>
   #        (b) /home/httpd/html/userfiles/
   #        (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
   #    or is:
   #
   #    2. for a file, and the path (after prepending) does not begin with one of:
   #        (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
   #        (b) /home/httpd/html/res/<domain>/<username>/
   #        (c) /home/httpd/html/userfiles/<domain>/<username>/
   #
   #    the response will be "refused".
   #
 # Parameters:  # Parameters:
 #    $cmd        - The command that dispatched us (ls).  #    $cmd        - The command that dispatched us (ls).
 #    $ulsdir     - The directory path to list... I'm not sure what this  #    $ulsdir     - The directory path to list... I'm not sure what this
Line 1424  sub ls_handler { Line 1461  sub ls_handler {
     my $rights;      my $rights;
     my $ulsout='';      my $ulsout='';
     my $ulsfn;      my $ulsfn;
       if ($ulsdir =~m{/\.\./}) {
           &Failure($client,"refused\n",$userinput);
           return 1;
       }
     if (-e $ulsdir) {      if (-e $ulsdir) {
  if(-d $ulsdir) {   if(-d $ulsdir) {
               unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
                       ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
                   &Failure($client,"refused\n",$userinput);
                   return 1;
               }
     if (opendir(LSDIR,$ulsdir)) {      if (opendir(LSDIR,$ulsdir)) {
  while ($ulsfn=readdir(LSDIR)) {   while ($ulsfn=readdir(LSDIR)) {
     undef($obs);      undef($obs);
Line 1449  sub ls_handler { Line 1495  sub ls_handler {
  closedir(LSDIR);   closedir(LSDIR);
     }      }
  } else {   } else {
               unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
                       ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) { 
                   &Failure($client,"refused\n",$userinput);
                   return 1;
               }
     my @ulsstats=stat($ulsdir);      my @ulsstats=stat($ulsdir);
     $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';      $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
  }   }
Line 1473  sub ls_handler { Line 1524  sub ls_handler {
 #    selected directory the filename followed by the full output of  #    selected directory the filename followed by the full output of
 #    the stat function is returned.  The returned info for each  #    the stat function is returned.  The returned info for each
 #    file are separated by ':'.  The stat fields are separated by &'s.  #    file are separated by ':'.  The stat fields are separated by &'s.
   #
   #    If the requested path contains /../ or is:
   #
   #    1. for a directory, and the path does not begin with one of:
   #        (a) /home/httpd/html/res/<domain>
   #        (b) /home/httpd/html/userfiles/
   #        (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
   #    or is:
   #
   #    2. for a file, and the path (after prepending) does not begin with one of:
   #        (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
   #        (b) /home/httpd/html/res/<domain>/<username>/
   #        (c) /home/httpd/html/userfiles/<domain>/<username>/
   #
   #    the response will be "refused".
   #
 # Parameters:  # Parameters:
 #    $cmd        - The command that dispatched us (ls).  #    $cmd        - The command that dispatched us (ls).
 #    $ulsdir     - The directory path to list... I'm not sure what this  #    $ulsdir     - The directory path to list... I'm not sure what this
Line 1493  sub ls2_handler { Line 1560  sub ls2_handler {
     my $rights;      my $rights;
     my $ulsout='';      my $ulsout='';
     my $ulsfn;      my $ulsfn;
       if ($ulsdir =~m{/\.\./}) {
           &Failure($client,"refused\n",$userinput);
           return 1;
       }
     if (-e $ulsdir) {      if (-e $ulsdir) {
         if(-d $ulsdir) {          if(-d $ulsdir) {
               unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
                       ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
                   &Failure($client,"refused\n","$userinput");
                   return 1;
               }
             if (opendir(LSDIR,$ulsdir)) {              if (opendir(LSDIR,$ulsdir)) {
                 while ($ulsfn=readdir(LSDIR)) {                  while ($ulsfn=readdir(LSDIR)) {
                     undef($obs);                      undef($obs);
Line 1519  sub ls2_handler { Line 1595  sub ls2_handler {
                 closedir(LSDIR);                  closedir(LSDIR);
             }              }
         } else {          } else {
               unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
                       ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
                   &Failure($client,"refused\n",$userinput);
                   return 1;
               }
             my @ulsstats=stat($ulsdir);              my @ulsstats=stat($ulsdir);
             $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';              $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
         }          }
Line 1535  sub ls2_handler { Line 1616  sub ls2_handler {
 #    selected directory the filename followed by the full output of  #    selected directory the filename followed by the full output of
 #    the stat function is returned.  The returned info for each  #    the stat function is returned.  The returned info for each
 #    file are separated by ':'.  The stat fields are separated by &'s.  #    file are separated by ':'.  The stat fields are separated by &'s.
   #
   #    If the requested path (after prepending) contains /../ or is:
   #
   #    1. for a directory, and the path does not begin with one of:
   #        (a) /home/httpd/html/res/<domain>
   #        (b) /home/httpd/html/userfiles/
   #        (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
   #        (d) /home/httpd/html/priv/<domain> and client is the homeserver
   #
   #    or is:
   #
   #    2. for a file, and the path (after prepending) does not begin with one of:
   #        (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
   #        (b) /home/httpd/html/res/<domain>/<username>/
   #        (c) /home/httpd/html/userfiles/<domain>/<username>/
   #        (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
   #
   #    the response will be "refused".
   #
 # Parameters:  # Parameters:
 #    $cmd        - The command that dispatched us (ls).  #    $cmd        - The command that dispatched us (ls).
 #    $tail       - The tail of the request that invoked us.  #    $tail       - The tail of the request that invoked us.
Line 1574  sub ls3_handler { Line 1674  sub ls3_handler {
     }      }
   
     my $dir_root = $perlvar{'lonDocRoot'};      my $dir_root = $perlvar{'lonDocRoot'};
     if ($getpropath) {      if (($getpropath) || ($getuserdir)) {
         if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {          if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
             $dir_root = &propath($udom,$uname);              $dir_root = &propath($udom,$uname);
             $dir_root =~ s/\/$//;              $dir_root =~ s/\/$//;
         } else {          } else {
             &Failure($client,"refused\n","$cmd:$tail");              &Failure($client,"refused\n",$userinput);
             return 1;  
         }  
     } elsif ($getuserdir) {  
         if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {  
             my $subdir=$uname.'__';  
             $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;  
             $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}  
                        ."/$udom/$subdir/$uname";  
         } else {  
             &Failure($client,"refused\n","$cmd:$tail");  
             return 1;              return 1;
         }          }
     } elsif ($alternate_root ne '') {      } elsif ($alternate_root ne '') {
Line 1602  sub ls3_handler { Line 1692  sub ls3_handler {
             $ulsdir = $dir_root.'/'.$ulsdir;              $ulsdir = $dir_root.'/'.$ulsdir;
         }          }
     }      }
       if ($ulsdir =~m{/\.\./}) {
           &Failure($client,"refused\n",$userinput);
           return 1;
       }
       my $islocal;
       my @machine_ids = &Apache::lonnet::current_machine_ids();
       if (grep(/^\Q$clientname\E$/,@machine_ids)) {
           $islocal = 1;
       }
     my $obs;      my $obs;
     my $rights;      my $rights;
     my $ulsout='';      my $ulsout='';
     my $ulsfn;      my $ulsfn;
     if (-e $ulsdir) {      if (-e $ulsdir) {
         if(-d $ulsdir) {          if(-d $ulsdir) {
               unless (($getpropath) || ($getuserdir) ||
                       ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
                       ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
                       (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
                   &Failure($client,"refused\n",$userinput);
                   return 1;
               }
             if (opendir(LSDIR,$ulsdir)) {              if (opendir(LSDIR,$ulsdir)) {
                 while ($ulsfn=readdir(LSDIR)) {                  while ($ulsfn=readdir(LSDIR)) {
                     undef($obs);                      undef($obs);
Line 1632  sub ls3_handler { Line 1738  sub ls3_handler {
                 closedir(LSDIR);                  closedir(LSDIR);
             }              }
         } else {          } else {
               unless (($getpropath) || ($getuserdir) ||
                       ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
                       ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
                       (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
                   &Failure($client,"refused\n",$userinput);
                   return 1;
               }
             my @ulsstats=stat($ulsdir);              my @ulsstats=stat($ulsdir);
             $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';              $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
         }          }
Line 1682  sub read_lonnet_global { Line 1795  sub read_lonnet_global {
                 }                  }
                 if ($what eq 'perlvar') {                  if ($what eq 'perlvar') {
                     if (!exists($packagevars{$what}{'lonBalancer'})) {                      if (!exists($packagevars{$what}{'lonBalancer'})) {
                         if ($dist =~ /^(centos|rhes|fedora|scientific)/) {                          if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) {
                             my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');                              my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
                             if (ref($othervarref) eq 'HASH') {                              if (ref($othervarref) eq 'HASH') {
                                 $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};                                  $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
Line 1704  sub read_lonnet_global { Line 1817  sub read_lonnet_global {
 sub server_devalidatecache_handler {  sub server_devalidatecache_handler {
     my ($cmd,$tail,$client) = @_;      my ($cmd,$tail,$client) = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my ($name,$id) = map { &unescape($_); } split(/:/,$tail);      my $items = &unescape($tail);
     &Apache::lonnet::devalidate_cache_new($name,$id);      my @cached = split(/\&/,$items);
       foreach my $key (@cached) {
           if ($key =~ /:/) {
               my ($name,$id) = map { &unescape($_); } split(/:/,$key);
               &Apache::lonnet::devalidate_cache_new($name,$id);
           }
       }
     my $result = 'ok';      my $result = 'ok';
     &Reply($client,\$result,$userinput);      &Reply($client,\$result,$userinput);
     return 1;      return 1;
Line 1901  sub authenticate_handler { Line 2020  sub authenticate_handler {
                 my ($remote,$hosted);                  my ($remote,$hosted);
                 my $remotesession = &get_usersession_config($udom,'remotesession');                  my $remotesession = &get_usersession_config($udom,'remotesession');
                 if (ref($remotesession) eq 'HASH') {                  if (ref($remotesession) eq 'HASH') {
                     $remote = $remotesession->{'remote'}                      $remote = $remotesession->{'remote'};
                 }                  }
                 my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');                  my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
                 if (ref($hostedsession) eq 'HASH') {                  if (ref($hostedsession) eq 'HASH') {
Line 1988  sub change_password_handler { Line 2107  sub change_password_handler {
     }      }
     if($validated) {      if($validated) {
  my $realpasswd  = &get_auth_type($udom, $uname); # Defined since authd.   my $realpasswd  = &get_auth_type($udom, $uname); # Defined since authd.
   
  my ($howpwd,$contentpwd)=split(/:/,$realpasswd);   my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
           my $notunique;
  if ($howpwd eq 'internal') {   if ($howpwd eq 'internal') {
     &Debug("internal auth");      &Debug("internal auth");
     my $salt=time;              my $ncpass = &hash_passwd($udom,$npass);
     $salt=substr($salt,6,2);              my (undef,$method,@rest) = split(/!/,$contentpwd);
     my $ncpass=crypt($npass,$salt);              if ($method eq 'bcrypt') {
     if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {                  my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
                   if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
                       my @oldpasswds;
                       my $userpath = &propath($udom,$uname);
                       my $fullpath = $userpath.'/oldpasswds';
                       if (-d $userpath) {
                           my @oldfiles;
                           if (-e $fullpath) {
                               if (opendir(my $dir,$fullpath)) {
                                   (@oldfiles) = grep(/^\d+$/,readdir($dir));
                                   closedir($dir);
                               }
                               if (@oldfiles) {
                                   @oldfiles = sort { $b <=> $a } (@oldfiles);
                                   my $numremoved = 0;
                                   for (my $i=0; $i<@oldfiles; $i++) {
                                       if ($i>=$passwdconf{'numsaved'}) {
                                           if (-f "$fullpath/$oldfiles[$i]") {
                                               if (unlink("$fullpath/$oldfiles[$i]")) {
                                                   $numremoved ++;
                                               }
                                           }
                                       } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
                                           while (my $line = <$fh>) {
                                               push(@oldpasswds,$line);
                                           }
                                           close($fh);
                                       }
                                   }
                                   if ($numremoved) {
                                       &logthis("unlinked $numremoved old password files for $uname:$udom");
                                   }
                               }
                           }
                           push(@oldpasswds,$contentpwd);
                           foreach my $item (@oldpasswds) {
                               my (undef,$method,@rest) = split(/!/,$item);
                               if ($method eq 'bcrypt') {
                                   my $result = &hash_passwd($udom,$npass,@rest);
                                   if ($result eq $item) {
                                       $notunique = 1;
                                       last;
                                   }
                               }
                           }
                           unless ($notunique) {
                               unless (-e $fullpath) {
                                   if (&mkpath("$fullpath/")) {
                                       chmod(0700,$fullpath);
                                   }
                               }
                               if (-d $fullpath) {
                                   my $now = time;
                                   if (open(my $fh,'>',"$fullpath/$now")) {
                                       print $fh $contentpwd;
                                       close($fh);
                                       chmod(0400,"$fullpath/$now");
                                   }
                               }
                           }
                       }
                   }
               }
               if ($notunique) {
                   my $msg="Result of password change for $uname:$udom - password matches one used before";
                   if ($lonhost) {
                       $msg .= " - request originated from: $lonhost";
                   }
                   &logthis($msg);
                   &Reply($client, "prioruse\n", $userinput);
       } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
  my $msg="Result of password change for $uname: pwchange_success";   my $msg="Result of password change for $uname: pwchange_success";
                 if ($lonhost) {                  if ($lonhost) {
                     $msg .= " - request originated from: $lonhost";                      $msg .= " - request originated from: $lonhost";
                 }                  }
                 &logthis($msg);                  &logthis($msg);
                   &update_passwd_history($uname,$udom,$howpwd,$context);
  &Reply($client, "ok\n", $userinput);   &Reply($client, "ok\n", $userinput);
     } else {      } else {
  &logthis("Unable to open $uname passwd "                  &logthis("Unable to open $uname passwd "               
Line 2009  sub change_password_handler { Line 2199  sub change_password_handler {
     }      }
  } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {   } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
     my $result = &change_unix_password($uname, $npass);      my $result = &change_unix_password($uname, $npass);
               if ($result eq 'ok') {
                   &update_passwd_history($uname,$udom,$howpwd,$context);
               }
     &logthis("Result of password change for $uname: ".      &logthis("Result of password change for $uname: ".
      $result);       $result);
     &Reply($client, \$result, $userinput);      &Reply($client, \$result, $userinput);
Line 2019  sub change_password_handler { Line 2212  sub change_password_handler {
     #      #
     &Failure( $client, "auth_mode_error\n", $userinput);      &Failure( $client, "auth_mode_error\n", $userinput);
  }     }  
   
     } else {      } else {
  if ($failure eq '') {   if ($failure eq '') {
     $failure = 'non_authorized';      $failure = 'non_authorized';
Line 2031  sub change_password_handler { Line 2223  sub change_password_handler {
 }  }
 &register_handler("passwd", \&change_password_handler, 1, 1, 0);  &register_handler("passwd", \&change_password_handler, 1, 1, 0);
   
   sub hash_passwd {
       my ($domain,$plainpass,@rest) = @_;
       my ($salt,$cost);
       if (@rest) {
           $cost = $rest[0];
           # salt is first 22 characters, base-64 encoded by bcrypt
           my $plainsalt = substr($rest[1],0,22);
           $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
       } else {
           my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
           my $defaultcost = $domdefaults{'intauth_cost'};
           if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
               $cost = 10;
           } else {
               $cost = $defaultcost;
           }
           # Generate random 16-octet base64 salt
           $salt = "";
           $salt .= pack("C", int rand(256)) for 1..16;
       }
       my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
           key_nul => 1,
           cost    => $cost,
           salt    => $salt,
       }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
   
       my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
                   &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
                   &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
       return $result;
   }
   
 #  #
 #   Create a new user.  User in this case means a lon-capa user.  #   Create a new user.  User in this case means a lon-capa user.
 #   The user must either already exist in some authentication realm  #   The user must either already exist in some authentication realm
Line 2074  sub add_user_handler { Line 2298  sub add_user_handler {
     ."makeuser";      ."makeuser";
     }      }
     unless ($fperror) {      unless ($fperror) {
  my $result=&make_passwd_file($uname,$udom,$umode,$npass, $passfilename);   my $result=&make_passwd_file($uname,$udom,$umode,$npass,
                                                $passfilename,'makeuser');
  &Reply($client,\$result, $userinput);     #BUGBUG - could be fail   &Reply($client,\$result, $userinput);     #BUGBUG - could be fail
     } else {      } else {
  &Failure($client, \$fperror, $userinput);   &Failure($client, \$fperror, $userinput);
Line 2135  sub change_authentication_handler { Line 2360  sub change_authentication_handler {
  my $passfilename = &password_path($udom, $uname);   my $passfilename = &password_path($udom, $uname);
  if ($passfilename) { # Not allowed to create a new user!!   if ($passfilename) { # Not allowed to create a new user!!
     # If just changing the unix passwd. need to arrange to run      # If just changing the unix passwd. need to arrange to run
     # passwd since otherwise make_passwd_file will run      # passwd since otherwise make_passwd_file will fail as 
     # lcuseradd which fails if an account already exists      # creation of unix authenticated users is no longer supported
     # (to prevent an unscrupulous LONCAPA admin from stealing              # except from the command line, when running make_domain_coordinator.pl
     # an existing account by overwriting it as a LonCAPA account).  
   
     if(($oldauth =~/^unix/) && ($umode eq "unix")) {      if(($oldauth =~/^unix/) && ($umode eq "unix")) {
  my $result = &change_unix_password($uname, $npass);   my $result = &change_unix_password($uname, $npass);
  &logthis("Result of password change for $uname: ".$result);   &logthis("Result of password change for $uname: ".$result);
  if ($result eq "ok") {   if ($result eq "ok") {
                       &update_passwd_history($uname,$udom,$umode,'changeuserauth');
     &Reply($client, \$result);      &Reply($client, \$result);
  } else {   } else {
     &Failure($client, \$result);      &Failure($client, \$result);
  }   }
     } else {      } else {
  my $result=&make_passwd_file($uname,$udom,$umode,$npass,$passfilename);   my $result=&make_passwd_file($uname,$udom,$umode,$npass,
                                                $passfilename,'changeuserauth');
  #   #
  #  If the current auth mode is internal, and the old auth mode was   #  If the current auth mode is internal, and the old auth mode was
  #  unix, or krb*,  and the user is an author for this domain,   #  unix, or krb*,  and the user is an author for this domain,
  #  re-run manage_permissions for that role in order to be able   #  re-run manage_permissions for that role in order to be able
  #  to take ownership of the construction space back to www:www   #  to take ownership of the construction space back to www:www
  #   #
   
   
  if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||  
     (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {   
     if(&is_author($udom, $uname)) {  
  &Debug(" Need to manage author permissions...");  
  &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");  
     }  
  }  
  &Reply($client, \$result, $userinput);   &Reply($client, \$result, $userinput);
     }      }
                 
Line 2177  sub change_authentication_handler { Line 2396  sub change_authentication_handler {
 }  }
 &register_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);  &register_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
   
   sub update_passwd_history {
       my ($uname,$udom,$umode,$context) = @_;
       my $proname=&propath($udom,$uname);
       my $now = time;
       if (open(my $fh,">>$proname/passwd.log")) {
           print $fh "$now:$umode:$context\n";
           close($fh);
       }
       return;
   }
   
   sub inst_unamemap_check {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my %rulecheck;
       my $outcome;
       my ($udom,$uname,@rules) = split(/:/,$tail);
       $udom = &unescape($udom);
       $uname = &unescape($uname);
       @rules = map {&unescape($_);} (@rules);
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::unamemap_check($udom,$uname,\@rules,\%rulecheck);
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               my $result='';
               foreach my $key (keys(%rulecheck)) {
                   $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
               }
               &Reply($client,\$result,$userinput);
           } else {
               &Reply($client,"error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
   }
   &register_handler("instunamemapcheck",\&inst_unamemap_check,0,1,0);
   
   
 #  #
 #   Determines if this is the home server for a user.  The home server  #   Determines if this is the home server for a user.  The home server
 #   for a user will have his/her lon-capa passwd file.  Therefore all we need  #   for a user will have his/her lon-capa passwd file.  Therefore all we need
Line 2269  sub update_resource_handler { Line 2529  sub update_resource_handler {
  }   }
  alarm(0);   alarm(0);
  if ($response->is_error()) {   if ($response->is_error()) {
 # FIXME: we should probably clean up here instead of just whine                      my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
     unlink($transname);                      &devalidate_meta_cache($fname);
                       if (-e $transname) {
                           unlink($transname);
                       }
                       unlink($fname);
     my $message=$response->status_line;      my $message=$response->status_line;
     &logthis("LWP GET: $message for $fname ($remoteurl)");      &logthis("LWP GET: $message for $fname ($remoteurl)");
  } else {   } else {
Line 2428  sub remove_user_file_handler { Line 2692  sub remove_user_file_handler {
     if (-e $file) {      if (-e $file) {
  #   #
  #   If the file is a regular file unlink is fine...   #   If the file is a regular file unlink is fine...
  #   However it's possible the client wants a dir.   #   However it's possible the client wants a dir
  #   removed, in which case rmdir is more approprate:   #   removed, in which case rmdir is more appropriate
           #   Note: rmdir will only remove an empty directory.
  #   #
         if (-f $file){          if (-f $file){
     unlink($file);      unlink($file);
                       # for html files remove the associated .bak file
                       # which may have been created by the editor.
                       if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
                           my $path = $1;
                           if (-e $file.'.bak') {
                               unlink($file.'.bak');
                           }
                       }
  } elsif(-d $file) {   } elsif(-d $file) {
     rmdir($file);      rmdir($file);
  }   }
Line 2795  sub newput_user_profile_entry { Line 3068  sub newput_user_profile_entry {
     foreach my $pair (@pairs) {      foreach my $pair (@pairs) {
  my ($key,$value)=split(/=/,$pair);   my ($key,$value)=split(/=/,$pair);
  if (exists($hashref->{$key})) {   if (exists($hashref->{$key})) {
               if (!&untie_user_hash($hashref)) {
                   &logthis("error: ".($!+0)." untie (GDBM) failed ".
                            "while attempting newput - early out as key exists");
               }
     &Failure($client, "key_exists: ".$key."\n",$userinput);      &Failure($client, "key_exists: ".$key."\n",$userinput);
     return 1;      return 1;
  }   }
Line 3046  sub get_profile_entry { Line 3323  sub get_profile_entry {
 #  #
 #  Parameters:  #  Parameters:
 #     $cmd               - Command keyword of request (eget).  #     $cmd               - Command keyword of request (eget).
 #     $tail              - Tail of the command.  See GetProfileEntry #                          for more information about this.  #     $tail              - Tail of the command.  See GetProfileEntry
   #                          for more information about this.
 #     $client            - File open on the client.  #     $client            - File open on the client.
 #  Returns:  #  Returns:
 #     1      - Continue processing  #     1      - Continue processing
Line 3288  sub dump_with_regexp { Line 3566  sub dump_with_regexp {
 }  }
 &register_handler("dump", \&dump_with_regexp, 0, 1, 0);  &register_handler("dump", \&dump_with_regexp, 0, 1, 0);
   
   #
   #  Process the encrypted dump request. Original call should
   #  be from lonnet::dump() with seventh arg ($encrypt) set to
   #  1, to ensure that both request and response are encrypted.
   #
   #  Parameters:
   #     $cmd               - Command keyword of request (edump).
   #     $tail              - Tail of the command.
   #                          See &dump_with_regexp for more
   #                          information about this.
   #     $client            - File open on the client.
   #  Returns:
   #     1      - Continue processing
   #     0      - server should exit.
   #
   
   sub encrypted_dump_with_regexp {
       my ($cmd, $tail, $client) = @_;
       my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
   
       if ($res =~ /^error:/) {
           Failure($client, \$res, "$cmd:$tail");
       } else {
           if ($cipher) {
               my $cmdlength=length($res);
               $res.="         ";
               my $encres='';
               for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
                   $encres.= unpack("H16",
                                    $cipher->encrypt(substr($res,
                                                            $encidx,
                                                            8)));
               }
               &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
           } else {
               &Failure( $client, "error:no_key\n","$cmd:$tail");
           }
       }
   }
   &register_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
   
 #  Store a set of key=value pairs associated with a versioned name.  #  Store a set of key=value pairs associated with a versioned name.
 #  #
 #  Parameters:  #  Parameters:
Line 3298  sub dump_with_regexp { Line 3617  sub dump_with_regexp {
 #                          namespace   - Name of the database being modified  #                          namespace   - Name of the database being modified
 #                          rid         - Resource keyword to modify.  #                          rid         - Resource keyword to modify.
 #                          what        - new value associated with rid.  #                          what        - new value associated with rid.
   #                          laststore   - (optional) version=timestamp
   #                                        for most recent transaction for rid
   #                                        in namespace, when cstore was called
 #  #
 #    $client             - Socket open on the client.  #    $client             - Socket open on the client.
 #  #
Line 3306  sub dump_with_regexp { Line 3628  sub dump_with_regexp {
 #      1 (keep on processing).  #      1 (keep on processing).
 #  Side-Effects:  #  Side-Effects:
 #    Writes to the client  #    Writes to the client
   #    Successful storage will cause either 'ok', or, if $laststore was included
   #    in the tail of the request, and the version number for the last transaction
   #    is larger than the version in $laststore, delay:$numtrans , where $numtrans
   #    is the number of store evevnts recorded for rid in namespace since
   #    lonnet::store() was called by the client.
   #
 sub store_handler {  sub store_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
     
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);      chomp($tail);
       my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
     if ($namespace ne 'roles') {      if ($namespace ne 'roles') {
   
  chomp($what);  
  my @pairs=split(/\&/,$what);   my @pairs=split(/\&/,$what);
  my $hashref  = &tie_user_hash($udom, $uname, $namespace,   my $hashref  = &tie_user_hash($udom, $uname, $namespace,
        &GDBM_WRCREAT(), "S",         &GDBM_WRCREAT(), "S",
        "$rid:$what");         "$rid:$what");
  if ($hashref) {   if ($hashref) {
     my $now = time;      my $now = time;
     my @previouskeys=split(/&/,$hashref->{"keys:$rid"});              my $numtrans;
     my $key;              if ($laststore) {
                   my ($previousversion,$previoustime) = split(/\=/,$laststore);
                   my ($lastversion,$lasttime) = (0,0);
                   $lastversion = $hashref->{"version:$rid"};
                   if ($lastversion) {
                       $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
                   }
                   if (($previousversion) && ($previousversion !~ /\D/)) {
                       if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
                           $numtrans = $lastversion - $previousversion;
                       }
                   } elsif ($lastversion) {
                       $numtrans = $lastversion;
                   }
                   if ($numtrans) {
                       $numtrans =~ s/D//g;
                   }
               }
   
     $hashref->{"version:$rid"}++;      $hashref->{"version:$rid"}++;
     my $version=$hashref->{"version:$rid"};      my $version=$hashref->{"version:$rid"};
     my $allkeys='';       my $allkeys=''; 
Line 3335  sub store_handler { Line 3681  sub store_handler {
     $allkeys.='timestamp';      $allkeys.='timestamp';
     $hashref->{"$version:keys:$rid"}=$allkeys;      $hashref->{"$version:keys:$rid"}=$allkeys;
     if (&untie_user_hash($hashref)) {      if (&untie_user_hash($hashref)) {
  &Reply($client, "ok\n", $userinput);                  my $msg = 'ok';
                   if ($numtrans) {
                       $msg = 'delay:'.$numtrans;
                   }
                   &Reply($client, "$msg\n", $userinput);
     } else {      } else {
  &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".   &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
  "while attempting store\n", $userinput);   "while attempting store\n", $userinput);
Line 3597  sub send_query_handler { Line 3947  sub send_query_handler {
   
     my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);      my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
     $query=~s/\n*$//g;      $query=~s/\n*$//g;
       if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
           my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
           my $earlyout;
           if (ref($usersearchconf) eq 'HASH') {
               if ($currentdomainid eq $clienthomedom) {
                   if ($query eq 'usersearch') {
                       if ($usersearchconf->{'lcavailable'} eq '0') {
                           $earlyout = 1;
                       }
                   } else {
                       if ($usersearchconf->{'available'} eq '0') {
                           $earlyout = 1;
                       }
                   }
               } else {
                   if ($query eq 'usersearch') {
                       if ($usersearchconf->{'lclocalonly'}) {
                           $earlyout = 1;
                       }
                   } else {
                       if ($usersearchconf->{'localonly'}) {
                           $earlyout = 1;
                       }
                   }
               }
           }
           if ($earlyout) {
               &Reply($client, "query_not_authorized\n");
               return 1;
           }
       }
     &Reply($client, "". &sql_reply("$clientname\&$query".      &Reply($client, "". &sql_reply("$clientname\&$query".
  "\&$arg1"."\&$arg2"."\&$arg3")."\n",   "\&$arg1"."\&$arg2"."\&$arg3")."\n",
   $userinput);    $userinput);
Line 3851  sub put_course_id_hash_handler { Line 4232  sub put_course_id_hash_handler {
 #                 creationcontext - include courses created in specified context   #                 creationcontext - include courses created in specified context 
 #  #
 #                 domcloner - flag to indicate if user can create CCs in course's domain.  #                 domcloner - flag to indicate if user can create CCs in course's domain.
 #                             If so, ability to clone course is automatic.   #                             If so, ability to clone course is automatic.
   #                 hasuniquecode - filter by courses for which a six character unique code has
   #                                 been set.
 #  #
 #     $client  - The socket open on the client.  #     $client  - The socket open on the client.
 # Returns:  # Returns:
Line 3865  sub dump_course_id_handler { Line 4248  sub dump_course_id_handler {
     my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,      my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
         $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,          $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
         $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,          $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
         $creationcontext,$domcloner) =split(/:/,$tail);          $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
     my $now = time;      my $now = time;
     my ($cloneruname,$clonerudom,%cc_clone);      my ($cloneruname,$clonerudom,%cc_clone);
     if (defined($description)) {      if (defined($description)) {
Line 3938  sub dump_course_id_handler { Line 4321  sub dump_course_id_handler {
     } else {      } else {
         $creationcontext = '.';          $creationcontext = '.';
     }      }
       unless ($hasuniquecode) {
           $hasuniquecode = '.';
       }
     my $unpack = 1;      my $unpack = 1;
     if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&       if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' && 
         $typefilter eq '.') {          $typefilter eq '.') {
Line 4026  sub dump_course_id_handler { Line 4412  sub dump_course_id_handler {
                 $selfenroll_end = $items->{'selfenroll_end_date'};                  $selfenroll_end = $items->{'selfenroll_end_date'};
                 $created = $items->{'created'};                  $created = $items->{'created'};
                 $context = $items->{'context'};                  $context = $items->{'context'};
                   if ($hasuniquecode ne '.') {
                       next unless ($items->{'uniquecode'});
                   }
                 if ($selfenrollonly) {                  if ($selfenrollonly) {
                     next if (!$selfenroll_types);                      next if (!$selfenroll_types);
                     if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {                      if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
Line 4258  sub course_lastaccess_handler { Line 4647  sub course_lastaccess_handler {
 }  }
 &register_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);  &register_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
   
   sub course_sessions_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($cdom,$cnum,$lastactivity) = split(':',$tail);
       my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
       my (%sessions,$qresult);
       my $now=time;
       if (opendir(DIR,$perlvar{'lonIDsDir'})) {
           my $filename;
           while ($filename=readdir(DIR)) {
               next if ($filename=~/^\./);
               next if ($filename=~/^publicuser_/);
               next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
               if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
                   my ($uname,$udom) = ($1,$2);
                   next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
                   my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
                   if ($lastactivity < 0) {
                       next if ($mtime-$now > $lastactivity);
                   } else {
                       next if ($now-$mtime > $lastactivity);
                   }
                   $sessions{$uname.':'.$udom} = $mtime;
               }
           }
           closedir(DIR);
       }
       foreach my $user (keys(%sessions)) {
           $qresult.=&escape($user).'='.$sessions{$user}.'&';
       }
       if ($qresult) {
           chop($qresult);
       }
       &Reply($client, \$qresult, $userinput);
       return 1;
   }
   &register_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
   
 #  #
 # Puts an unencrypted entry in a namespace db file at the domain level   # Puts an unencrypted entry in a namespace db file at the domain level 
 #  #
Line 4306  sub put_domain_handler { Line 4733  sub put_domain_handler {
 # domain directory.  # domain directory.
 #  #
 # Parameters:  # Parameters:
 #   $cmd             - Command request keyword (get).  #   $cmd             - Command request keyword (getdom).
 #   $tail            - Tail of the command.  This is a colon separated list  #   $tail            - Tail of the command.  This is a colon separated list
 #                      consisting of the domain and the 'namespace'   #                      consisting of the domain and the 'namespace' 
 #                      which selects the gdbm file to do the lookup in,  #                      which selects the gdbm file to do the lookup in,
Line 4323  sub put_domain_handler { Line 4750  sub put_domain_handler {
 sub get_domain_handler {  sub get_domain_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
   
       my $userinput = "$cmd:$tail";
     my $userinput = "$client:$tail";  
   
     my ($udom,$namespace,$what)=split(/:/,$tail,3);      my ($udom,$namespace,$what)=split(/:/,$tail,3);
     chomp($what);      if (($namespace =~ /^enc/) || ($namespace eq 'private')) {
     my @queries=split(/\&/,$what);          &Failure( $client, "refused\n", $userinput);
     my $qresult='';      } else {
     my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());          my $res = LONCAPA::Lond::get_dom($userinput);
     if ($hashref) {          if ($res =~ /^error:/) {
         for (my $i=0;$i<=$#queries;$i++) {              &Failure($client, \$res, $userinput);
             $qresult.="$hashref->{$queries[$i]}&";  
         }  
         if (&untie_domain_hash($hashref)) {  
             $qresult=~s/\&$//;  
             &Reply($client, \$qresult, $userinput);  
         } else {          } else {
             &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".              &Reply($client, \$res, $userinput);
                       "while attempting getdom\n",$userinput);  
         }          }
     } else {  
         &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".  
                  "while attempting getdom\n",$userinput);  
     }      }
   
     return 1;      return 1;
 }  }
 &register_handler("getdom", \&get_domain_handler, 0, 1, 0);  &register_handler("getdom", \&get_domain_handler, 0, 1, 0);
   
   sub encrypted_get_domain_handler {
       my ($cmd, $tail, $client) = @_;
   
       my $userinput = "$cmd:$tail";
   
       my ($udom,$namespace,$what) = split(/:/,$tail,3);
       if ($namespace eq 'private') {
           &Failure( $client, "refused\n", $userinput);
       } else {
           my $res = LONCAPA::Lond::get_dom($userinput);
           if ($res =~ /^error:/) {
               &Failure($client, \$res, $userinput);
           } else {
               if ($cipher) {
                   my $cmdlength=length($res);
                   $res.="         ";
                   my $encres='';
                   for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
                       $encres.= unpack("H16",
                                        $cipher->encrypt(substr($res,
                                                                $encidx,
                                                                8)));
                   }
                   &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
               } else {
                   &Failure( $client, "error:no_key\n",$userinput);
               }
           }
       }
       return 1;
   }
   &register_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
   
   #
   # Encrypted get from the namespace database file at the domain level.
   # This function retrieves a keyed item from a specific named database in the
   # domain directory.
   #
   # Parameters:
   #   $cmd             - Command request keyword (lti).
   #   $tail            - Tail of the command.  This is a colon-separated list
   #                      consisting of the domain, coursenum, if for LTI-
   #                      enabled deep-linking to course content using
   #                      link protection configured within a course,
   #                      context (=deeplink) if for LTI-enabled deep-linking
   #                      to course content using LTI Provider settings
   #                      configured within a course's domain, the (escaped)
   #                      launch URL, the (escaped) method (typically POST),
   #                      and a frozen hash of the LTI launch parameters
   #                      from the LTI payload.
   #   $client          - File descriptor open on the client.
   # Returns:
   #   1       - Continue processing.
   #   0       - Exit.
   #  Side effects:
   #     The reply will contain an LTI itemID, if the signed LTI payload
   #     could be verified using the consumer key and the shared secret
   #     available for that key (for the itemID) for either the course or domain,
   #     depending on values for cnum and context. The reply is encrypted before
   #     being written to $client.
   #
   sub lti_handler {
       my ($cmd, $tail, $client) = @_;
   
       my $userinput = "$cmd:$tail";
   
       my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail);
       my $url = &unescape($escurl);
       my $method = &unescape($escmethod);
       my $params = &Apache::lonnet::thaw_unescape($items);
       my $res;
       if ($cnum ne '') {
           $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
       } else {
           $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
       }
       if ($res =~ /^error:/) {
           &Failure($client, \$res, $userinput);
       } else {
           if ($cipher) {
               my $cmdlength=length($res);
               $res.="         ";
               my $encres='';
               for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
                   $encres.= unpack("H16",
                                    $cipher->encrypt(substr($res,
                                                            $encidx,
                                                            8)));
               }
               &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
           } else {
               &Failure( $client, "error:no_key\n",$userinput);
           }
       }
       return 1;
   }
   &register_handler("lti", \&lti_handler, 1, 1, 0);
   
 #  #
 #  Puts an id to a domains id database.   #  Puts an id to a domains id database. 
 #  #
Line 4448  sub get_id_handler { Line 4963  sub get_id_handler {
 }  }
 &register_handler("idget", \&get_id_handler, 0, 1, 0);  &register_handler("idget", \&get_id_handler, 0, 1, 0);
   
   #   Deletes one or more ids in a domain's id database.
   #
   #   Parameters:
   #       $cmd                  - Command keyword (iddel).
   #       $tail                 - Command tail.  In this case a colon
   #                               separated list containing:
   #                               The domain for which we are deleting the id(s).
   #                               &-separated list of id(s) to delete.
   #       $client               - File open on client socket.
   # Returns:
   #     1   - Continue processing
   #     0   - Exit server.
   #
   #
   
   sub del_id_handler {
       my ($cmd,$tail,$client) = @_;
   
       my $userinput = "$cmd:$tail";
   
       my ($udom,$what)=split(/:/,$tail);
       chomp($what);
       my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
                                      "D", $what);
       if ($hashref) {
           my @keys=split(/\&/,$what);
           foreach my $key (@keys) {
               delete($hashref->{$key});
           }
           if (&untie_user_hash($hashref)) {
               &Reply($client, "ok\n", $userinput);
           } else {
               &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
                       "while attempting iddel\n", $userinput);
           }
       } else {
           &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
                    "while attempting iddel\n", $userinput);
       }
       return 1;
   }
   &register_handler("iddel", \&del_id_handler, 0, 1, 0);
   
 #  #
 # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database   # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database 
 #  #
Line 4733  sub tmp_put_handler { Line 5291  sub tmp_put_handler {
     }      }
     my ($id,$store);      my ($id,$store);
     $tmpsnum++;      $tmpsnum++;
     if (($context eq 'resetpw') || ($context eq 'createaccount')) {      my $numtries = 0;
         $id = &md5_hex(&md5_hex(time.{}.rand().$$));      my $execdir=$perlvar{'lonDaemons'};
       if (($context eq 'resetpw') || ($context eq 'createaccount') ||
           ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) {
           $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
           while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) {
               undef($id);
               $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
               $numtries ++;
           }
     } else {      } else {
         $id = $$.'_'.$clientip.'_'.$tmpsnum;          $id = $$.'_'.$clientip.'_'.$tmpsnum;
     }      }
     $id=~s/\W/\_/g;      $id=~s/\W/\_/g;
     $record=~s/\n//g;      $record=~s/\n//g;
     my $execdir=$perlvar{'lonDaemons'};      if (($id ne '') &&
     if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {          ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) {
  print $store $record;   print $store $record;
  close $store;   close $store;
  &Reply($client, \$id, $userinput);   &Reply($client, \$id, $userinput);
Line 4824  sub tmp_del_handler { Line 5390  sub tmp_del_handler {
 &register_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);  &register_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
   
 #  #
   #  Process the updatebalcookie command.  This command updates a
   #  cookie in the lonBalancedir directory on a load balancer node.
   #
   # Parameters:
   #   $cmd      - Command that got us here.
   #   $tail     - Tail of the request (escaped cookie: escaped current entry)
   #
   #   $client   - socket open on the client process.
   #
   # Returns:
   #   1     - Indicating processing should continue.
   # Side Effects:
   #   A cookie file is updated from the lonBalancedir directory
   #   A reply is sent to the client.
   #
   sub update_balcookie_handler {
       my ($cmd, $tail, $client) = @_;
   
       my $userinput= "$cmd:$tail";
       chomp($tail);
       my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
   
       my $updatedone;
       if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
           my $execdir=$perlvar{'lonBalanceDir'};
           if (-e "$execdir/$cookie.id") {
               my $doupdate;
               if (open(my $fh,'<',"$execdir/$cookie.id")) {
                   while (my $line = <$fh>) {
                       chomp($line);
                       if ($line eq $lastentry) {
                           $doupdate = 1;
                           last;
                       }
                   }
                   close($fh);
               }
               if ($doupdate) {
                   if (open(my $fh,'>',"$execdir/$cookie.id")) {
                       print $fh $clientname;
                       close($fh);
                       $updatedone = 1;
                   }
               }
           }
       }
       if ($updatedone) {
           &Reply($client, "ok\n", $userinput);
       } else {
           &Failure( $client, "error: ".($!+0)."file update failed ".
                     "while attempting updatebalcookie\n", $userinput);
       }
       return 1;
   }
   &register_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
   
   #
   #  Process the delbalcookie command. This command deletes a balancer
   #  cookie in the lonBalancedir directory on a load balancer node.
   #
   # Parameters:
   #   $cmd      - Command that got us here.
   #   $cookie   - Cookie to be deleted.
   #   $client   - socket open on the client process.
   #
   # Returns:
   #   1     - Indicating processing should continue.
   # Side Effects:
   #   A cookie file is deleted from the lonBalancedir directory
   #   A reply is sent to the client.
   sub del_balcookie_handler {
       my ($cmd, $cookie, $client) = @_;
   
       my $userinput= "$cmd:$cookie";
   
       chomp($cookie);
       $cookie = &unescape($cookie);
       my $deleted = '';
       if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
           my $execdir=$perlvar{'lonBalanceDir'};
           if (-e "$execdir/$cookie.id") {
               if (open(my $fh,'<',"$execdir/$cookie.id")) {
                   my $dodelete;
                   while (my $line = <$fh>) {
                       chomp($line);
                       if ($line eq $clientname) {
                           $dodelete = 1;
                           last;
                       }
                   }
                   close($fh);
                   if ($dodelete) {
                       if (unlink("$execdir/$cookie.id")) {
                           $deleted = 1;
                       }
                   }
               }
           }
       }
       if ($deleted) {
           &Reply($client, "ok\n", $userinput);
       } else {
           &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
                     "while attempting delbalcookie\n", $userinput);
       }
       return 1;
   }
   &register_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
   
   #
 #   Processes the setannounce command.  This command  #   Processes the setannounce command.  This command
 #   creates a file named announce.txt in the top directory of  #   creates a file named announce.txt in the top directory of
 #   the documentn root and sets its contents.  The announce.txt file is  #   the documentn root and sets its contents.  The announce.txt file is
Line 5006  sub validate_instcode_handler { Line 5682  sub validate_instcode_handler {
 }  }
 &register_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);  &register_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
   
   #
   #  Validate co-owner for cross-listed institutional code and
   #  institutional course code itself used for a LON-CAPA course.
   #
   # Formal Parameters:
   #   $cmd          - The command request that got us dispatched.
   #   $tail         - The tail of the command.  In this case,
   #                   this is a colon separated string containing:
   #      $dom            - Course's LON-CAPA domain
   #      $instcode       - Institutional course code for the course
   #      $inst_xlist     - Institutional course Id for the crosslisting
   #      $coowner        - Username of co-owner
   #      (values for all but $dom have been escaped).
   #
   #   $client       - Socket open on the client.
   # Returns:
   #    1           - Indicating processing should continue.
   #
   sub validate_instcrosslist_handler  {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
       $instcode = &unescape($instcode);
       $inst_xlist = &unescape($inst_xlist);
       $coowner = &unescape($coowner);
       my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
                                                             $inst_xlist,$coowner);
       &Reply($client, \$outcome, $userinput);
   
       return 1;
   }
   &register_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
   
 #   Get the official sections for which auto-enrollment is possible.  #   Get the official sections for which auto-enrollment is possible.
 #   Since the admin people won't know about 'unofficial sections'   #   Since the admin people won't know about 'unofficial sections' 
 #   we cannot auto-enroll on them.  #   we cannot auto-enroll on them.
Line 5102  sub validate_course_section_handler { Line 5811  sub validate_course_section_handler {
 # Formal Parameters:  # Formal Parameters:
 #    $cmd     - The command request that got us dispatched.  #    $cmd     - The command request that got us dispatched.
 #    $tail    - The tail of the command.   In this case this is a colon separated  #    $tail    - The tail of the command.   In this case this is a colon separated
 #               set of words that will be split into:  #               set of values that will be split into:
 #               $inst_class  - Institutional code for the specific class section     #               $inst_class  - Institutional code for the specific class section   
 #               $courseowner - The escaped username:domain of the course owner   #               $ownerlist   - An escaped comma-separated list of username:domain
   #                              of the course owner, and co-owner(s).
 #               $cdom        - The domain of the course from the institution's  #               $cdom        - The domain of the course from the institution's
 #                              point of view.  #                              point of view.
 #    $client  - The socket open on the client.  #    $client  - The socket open on the client.
Line 5129  sub validate_class_access_handler { Line 5839  sub validate_class_access_handler {
 &register_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);  &register_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
   
 #  #
   #    Modify institutional sections (using customized &instsec_reformat()
   #    routine in localenroll.pm), to either clutter or declutter, for
   #    purposes of ensuring an institutional course section (string) can
   #    be unambiguously separated into institutional course and section.
   #
   # Formal Parameters:
   #    $cmd     - The command request that got us dispatched.
   #    $tail    - The tail of the command.   In this case this is a colon separated
   #               set of values that will be split into:
   #               $cdom        - The LON-CAPA domain of the course.
   #               $action      - Either: clutter or declutter
   #                              clutter adds character(s) to eliminate ambiguity
   #                              declutter removes the added characters (e.g., for
   #                              display of the institutional course section string.
   #               $info        - A frozen hash in which keys are:
   #                              LON-CAPA course number:Institutional course code
   #                              and values are a reference to an array of the
   #                              items to modify -- either institutional sections,
   #                              or institutional course sections (for crosslistings).
   #    $client  - The socket open on the client.
   # Returns:
   #    1 - continue processing.
   #
   
   sub instsec_reformat_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($cdom,$action,$info) = split(/:/,$tail);
       my $instsecref = &Apache::lonnet::thaw_unescape($info);
       my ($outcome,$result);
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
           if ($outcome eq 'ok') {
               if (ref($instsecref) eq 'HASH') {
                   foreach my $key (keys(%{$instsecref})) {
                       $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
                   }
                   $result =~ s/\&$//;
               }
           }
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               &Reply( $client, \$result, $userinput);
           } else {
               &Reply($client,\$outcome, $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
       return 1;
   }
   &register_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
   
   #
   #   Validate course owner or co-owners(s) access to enrollment data for all sections
   #   and crosslistings for a particular course.
   #
   #
   # Formal Parameters:
   #    $cmd     - The command request that got us dispatched.
   #    $tail    - The tail of the command.   In this case this is a colon separated
   #               set of values that will be split into:
   #               $ownerlist   - An escaped comma-separated list of username:domain
   #                              of the course owner, and co-owner(s).
   #               $cdom        - The domain of the course from the institution's
   #                              point of view.
   #               $classes     - Frozen hash of institutional course sections and
   #                              crosslistings.
   #    $client  - The socket open on the client.
   # Returns:
   #    1 - continue processing.
   #
   
   sub validate_classes_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
       my $classesref = &Apache::lonnet::thaw_unescape($classes);
       my $owners = &unescape($ownerlist);
       my $result;
       eval {
           local($SIG{__DIE__})='DEFAULT';
           my %validations;
           my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
                                                          \%validations);
           if ($response eq 'ok') {
               foreach my $key (keys(%validations)) {
                   $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
               }
               $result =~ s/\&$//;
           } else {
               $result = 'error';
           }
       };
       if (!$@) {
           &Reply($client, \$result, $userinput);
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
       return 1;
   }
   &register_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
   
   #
 #   Create a password for a new LON-CAPA user added by auto-enrollment.  #   Create a password for a new LON-CAPA user added by auto-enrollment.
 #   Only used for case where authentication method for new user is localauth  #   Only used for case where authentication method for new user is localauth
 #  #
Line 5163  sub create_auto_enroll_password_handler Line 5979  sub create_auto_enroll_password_handler
 &register_handler("autocreatepassword", \&create_auto_enroll_password_handler,   &register_handler("autocreatepassword", \&create_auto_enroll_password_handler, 
   0, 1, 0);    0, 1, 0);
   
   sub auto_export_grades_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
       my $inforef = &Apache::lonnet::thaw_unescape($info);
       my $dataref = &Apache::lonnet::thaw_unescape($data);
       my ($outcome,$result);;
       eval {
           local($SIG{__DIE__})='DEFAULT';
           my %rtnhash;
           $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
           if ($outcome eq 'ok') {
               foreach my $key (keys(%rtnhash)) {
                   $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
               }
               $result =~ s/\&$//;
           }
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               if ($cipher) {
                   my $cmdlength=length($result);
                   $result.="         ";
                   my $encresult='';
                   for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
                       $encresult.= unpack("H16",
                                           $cipher->encrypt(substr($result,
                                                                   $encidx,
                                                                   8)));
                   }
                   &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
               } else {
                   &Failure( $client, "error:no_key\n", $userinput);
               }
           } else {
               &Reply($client, "$outcome\n", $userinput);
           }
       } else {
           &Failure($client,"export_error\n",$userinput);
       }
       return 1;
   }
   &register_handler("autoexportgrades", \&auto_export_grades_handler,
                     1, 1, 0);
   
   
 #   Retrieve and remove temporary files created by/during autoenrollment.  #   Retrieve and remove temporary files created by/during autoenrollment.
 #  #
 # Formal Parameters:  # Formal Parameters:
 #    $cmd      - The command that got us dispatched.  #    $cmd      - The command that got us dispatched.
 #    $tail     - The tail of the command.  In our case this is a colon   #    $tail     - The tail of the command.  In our case this is a colon 
 #                separated list that will be split into:  #                separated list that will be split into:
 #                $filename - The name of the file to remove.  #                $filename - The name of the file to retrieve.
 #                            The filename is given as a path relative to  #                            The filename is given as a path relative to
 #                            the LonCAPA temp file directory.  #                            the LonCAPA temp file directory.
 #    $client   - Socket open on the client.  #    $client   - Socket open on the client.
Line 5183  sub retrieve_auto_file_handler { Line 6045  sub retrieve_auto_file_handler {
     my ($filename)   = split(/:/, $tail);      my ($filename)   = split(/:/, $tail);
   
     my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;      my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
     if ( (-e $source) && ($filename ne '') ) {      if ($filename =~m{/\.\./}) {
           &Failure($client, "refused\n", $userinput);
       } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
           &Failure($client, "refused\n", $userinput);
       } elsif ( (-e $source) && ($filename ne '') ) {
  my $reply = '';   my $reply = '';
  if (open(my $fh,$source)) {   if (open(my $fh,$source)) {
     while (<$fh>) {      while (<$fh>) {
Line 5215  sub crsreq_checks_handler { Line 6081  sub crsreq_checks_handler {
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my $dom = $tail;      my $dom = $tail;
     my $result;      my $result;
     my @reqtypes = ('official','unofficial','community');      my @reqtypes = ('official','unofficial','community','textbook');
     eval {      eval {
         local($SIG{__DIE__})='DEFAULT';          local($SIG{__DIE__})='DEFAULT';
         my %validations;          my %validations;
Line 5242  sub crsreq_checks_handler { Line 6108  sub crsreq_checks_handler {
 sub validate_crsreq_handler {  sub validate_crsreq_handler {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);      my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
     $instcode = &unescape($instcode);      $instcode = &unescape($instcode);
     $owner = &unescape($owner);      $owner = &unescape($owner);
     $crstype = &unescape($crstype);      $crstype = &unescape($crstype);
     $inststatuslist = &unescape($inststatuslist);      $inststatuslist = &unescape($inststatuslist);
     $instcode = &unescape($instcode);      $instcode = &unescape($instcode);
     $instseclist = &unescape($instseclist);      $instseclist = &unescape($instseclist);
       my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
     my $outcome;      my $outcome;
     eval {      eval {
         local($SIG{__DIE__})='DEFAULT';          local($SIG{__DIE__})='DEFAULT';
         $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,          $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
                                                  $inststatuslist,$instcode,                                                   $inststatuslist,$instcode,
                                                  $instseclist);                                                   $instseclist,$custominfo);
     };      };
     if (!$@) {      if (!$@) {
         &Reply($client, \$outcome, $userinput);          &Reply($client, \$outcome, $userinput);
Line 5265  sub validate_crsreq_handler { Line 6132  sub validate_crsreq_handler {
 }  }
 &register_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);  &register_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
   
   sub crsreq_update_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
           $accessstart,$accessend,$infohashref) =
           split(/:/, $tail);
       $crstype = &unescape($crstype);
       $action = &unescape($action);
       $ownername = &unescape($ownername);
       $ownerdomain = &unescape($ownerdomain);
       $fullname = &unescape($fullname);
       $title = &unescape($title);
       $code = &unescape($code);
       $accessstart = &unescape($accessstart);
       $accessend = &unescape($accessend);
       my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
       my ($result,$outcome);
       eval {
           local($SIG{__DIE__})='DEFAULT';
           my %rtnhash;
           $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
                                                   $ownername,$ownerdomain,$fullname,
                                                   $title,$code,$accessstart,$accessend,
                                                   $incoming,\%rtnhash);
           if ($outcome eq 'ok') {
               my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
               foreach my $key (keys(%rtnhash)) {
                   if (grep(/^\Q$key\E/,@posskeys)) {
                       $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
                   }
               }
               $result =~ s/\&$//;
           }
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               &Reply($client, \$result, $userinput);
           } else {
               &Reply($client, "format_error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
       return 1;
   }
   &register_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
   
 #  #
 #   Read and retrieve institutional code format (for support form).  #   Read and retrieve institutional code format (for support form).
 # Formal Parameters:  # Formal Parameters:
Line 5484  sub get_institutional_selfcreate_rules { Line 6398  sub get_institutional_selfcreate_rules {
 }  }
 &register_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);  &register_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
   
   sub get_unamemap_rules {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
       my $dom = &unescape($tail);
       my (%rules_hash,@rules_order);
       my $outcome;
       eval {
           local($SIG{__DIE__})='DEFAULT';
           $outcome = &localenroll::unamemap_rules($dom,\%rules_hash,\@rules_order);
       };
       if (!$@) {
           if ($outcome eq 'ok') {
               my $result;
               foreach my $key (keys(%rules_hash)) {
                   $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
               }
               $result =~ s/\&$//;
               $result .= ':';
               if (@rules_order > 0) {
                   foreach my $item (@rules_order) {
                       $result .= &escape($item).'&';
                   }
               }
               $result =~ s/\&$//;
               &Reply($client,\$result,$userinput);
           } else {
               &Reply($client,"error\n", $userinput);
           }
       } else {
           &Failure($client,"unknown_cmd\n",$userinput);
       }
   }
   &register_handler("unamemaprules",\&get_unamemap_rules,0,1,0);
   
 sub institutional_username_check {  sub institutional_username_check {
     my ($cmd, $tail, $client)   = @_;      my ($cmd, $tail, $client)   = @_;
Line 5972  sub lcpasswdstrerror { Line 6919  sub lcpasswdstrerror {
     }      }
 }  }
   
 #  
 # Convert an error return code from lcuseradd to a string value:  
 #  
 sub lcuseraddstrerror {  
     my $ErrorCode = shift;  
     if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {  
  return "lcuseradd - Unrecognized error code: ".$ErrorCode;  
     } else {  
  return $adderrors[$ErrorCode];  
     }  
 }  
   
 # grabs exception and records it to log before exiting  # grabs exception and records it to log before exiting
 sub catchexception {  sub catchexception {
     my ($error)=@_;      my ($error)=@_;
Line 6020  my $wwwid=getpwnam('www'); Line 6955  my $wwwid=getpwnam('www');
 if ($wwwid!=$<) {  if ($wwwid!=$<) {
    my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";     my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
    my $subj="LON: $currenthostid User ID mismatch";     my $subj="LON: $currenthostid User ID mismatch";
    system("echo 'User ID mismatch.  lond must be run as user www.' |\     system("echo 'User ID mismatch.  lond must be run as user www.' |".
  mailto $emailto -s '$subj' > /dev/null");            " mail -s '$subj' $emailto > /dev/null");
    exit 1;     exit 1;
 }  }
   
Line 6469  sub make_new_child { Line 7404  sub make_new_child {
 #        my $tmpsnum=0;            # Now global  #        my $tmpsnum=0;            # Now global
 #---------------------------------------------------- kerberos 5 initialization  #---------------------------------------------------- kerberos 5 initialization
         &Authen::Krb5::init_context();          &Authen::Krb5::init_context();
  unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||    
  ($dist eq 'fedora6') || ($dist eq 'suse9.3') ||          my $no_ets;
                 ($dist eq 'suse12.2') || ($dist eq 'suse12.3')) {          if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) {
     &Authen::Krb5::init_ets();              if ($1 >= 7) {
  }                  $no_ets = 1;
               }
           } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
               if (($1 eq '9.3') || ($1 >= 12.2)) {
                   $no_ets = 1;
               }
           } elsif ($dist =~ /^sles(\d+)$/) {
               if ($1 > 11) {
                   $no_ets = 1;
               }
           } elsif ($dist =~ /^fedora(\d+)$/) {
               if ($1 < 7) {
                   $no_ets = 1;
               }
           }
           unless ($no_ets) {
               &Authen::Krb5::init_ets();
           }
   
  &status('Accepted connection');   &status('Accepted connection');
 # =============================================================================  # =============================================================================
Line 6587  sub make_new_child { Line 7539  sub make_new_child {
   ."Attempted insecure connection disallowed </font>");    ."Attempted insecure connection disallowed </font>");
  close $client;   close $client;
  $clientok = 0;   $clientok = 0;
   
     }      }
  }   }
     } else {      } else {
Line 6596  sub make_new_child { Line 7547  sub make_new_child {
  ."$clientip failed to initialize: >$remotereq< </font>");   ."$clientip failed to initialize: >$remotereq< </font>");
  &status('No init '.$clientip);   &status('No init '.$clientip);
     }      }
       
  } else {   } else {
     &logthis(      &logthis(
      "<font color='blue'>WARNING: Unknown client $clientip</font>");       "<font color='blue'>WARNING: Unknown client $clientip</font>");
Line 6622  sub make_new_child { Line 7572  sub make_new_child {
  Debug("Main: Got $user_input\n");   Debug("Main: Got $user_input\n");
  $keep_going = &process_request($user_input);   $keep_going = &process_request($user_input);
  alarm(0);   alarm(0);
  &status('Listening to '.$clientname." ($keymode)");      &status('Listening to '.$clientname." ($keymode)");
     }      }
   
 # --------------------------------------------- client unknown or fishy, refuse  # --------------------------------------------- client unknown or fishy, refuse
Line 6638  sub make_new_child { Line 7588  sub make_new_child {
           
     &logthis("<font color='red'>CRITICAL: "      &logthis("<font color='red'>CRITICAL: "
      ."Disconnect from $clientip ($clientname)</font>");           ."Disconnect from $clientip ($clientname)</font>");    
       
       
     # this exit is VERY important, otherwise the child will become      # this exit is VERY important, otherwise the child will become
     # a producer of more and more children, forking yourself into      # a producer of more and more children, forking yourself into
     # process death.      # process death.
Line 6754  sub password_filename { Line 7704  sub password_filename {
 #    domain    - domain of the user.  #    domain    - domain of the user.
 #    name      - User's name.  #    name      - User's name.
 #    contents  - New contents of the file.  #    contents  - New contents of the file.
   #    saveold   - (optional). If true save old file in a passwd.bak file.
 # Returns:  # Returns:
 #   0    - Failed.  #   0    - Failed.
 #   1    - Success.  #   1    - Success.
 #  #
 sub rewrite_password_file {  sub rewrite_password_file {
     my ($domain, $user, $contents) = @_;      my ($domain, $user, $contents, $saveold) = @_;
   
     my $file = &password_filename($domain, $user);      my $file = &password_filename($domain, $user);
     if (defined $file) {      if (defined $file) {
           if ($saveold) {
               my $bakfile = $file.'.bak';
               if (CopyFile($file,$bakfile)) {
                   chmod(0400,$bakfile);
                   &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
               } else {
                   &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
               }
           }
  my $pf = IO::File->new(">$file");   my $pf = IO::File->new(">$file");
  if($pf) {   if($pf) {
     print $pf "$contents\n";      print $pf "$contents\n";
Line 6849  sub validate_user { Line 7809  sub validate_user {
             } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||               } elsif ((($domdefaults{'auth_def'} eq 'krb4') || 
                       ($domdefaults{'auth_def'} eq 'krb5')) &&                        ($domdefaults{'auth_def'} eq 'krb5')) &&
                      ($domdefaults{'auth_arg_def'} ne '')) {                       ($domdefaults{'auth_arg_def'} ne '')) {
                 $howpwd = $domdefaults{'auth_def'};                  #
                 $contentpwd = $domdefaults{'auth_arg_def'};                   # Don't attempt authentication for username and password supplied
                   # for user without an account if username contains @ to avoid
                   # call to &Authen::Krb5::parse_name() which will result in con_lost
                   #
                   unless ($user =~ /\@/) {
                       $howpwd = $domdefaults{'auth_def'};
                       $contentpwd = $domdefaults{'auth_arg_def'};
                   }
             }              }
         }          }
     }       }
     if ($howpwd ne 'nouser') {      if ($howpwd ne 'nouser') {
  if($howpwd eq "internal") { # Encrypted is in local password file.   if($howpwd eq "internal") { # Encrypted is in local password file.
     $validated = (crypt($password, $contentpwd) eq $contentpwd);              if (length($contentpwd) == 13) {
                   $validated = (crypt($password,$contentpwd) eq $contentpwd);
                   if ($validated) {
                       my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
                       if ($domdefaults{'intauth_switch'}) {
                           my $ncpass = &hash_passwd($domain,$password);
                           my $saveold;
                           if ($domdefaults{'intauth_switch'} == 2) {
                               $saveold = 1;
                           }
                           if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
                               &update_passwd_history($user,$domain,$howpwd,'conversion');
                               &logthis("Validated password hashed with bcrypt for $user:$domain");
                           }
                       }
                   }
               } else {
                   $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
               }
  }   }
  elsif ($howpwd eq "unix") { # User is a normal unix user.   elsif ($howpwd eq "unix") { # User is a normal unix user.
     $contentpwd = (getpwnam($user))[1];      $contentpwd = (getpwnam($user))[1];
Line 6924  sub validate_user { Line 7909  sub validate_user {
     return $validated;      return $validated;
 }  }
   
   sub check_internal_passwd {
       my ($plainpass,$stored,$domain,$user) = @_;
       my (undef,$method,@rest) = split(/!/,$stored);
       if ($method eq 'bcrypt') {
           my $result = &hash_passwd($domain,$plainpass,@rest);
           if ($result ne $stored) {
               return 0;
           }
           my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
           if ($domdefaults{'intauth_check'}) {
               # Upgrade to a larger number of rounds if necessary
               my $defaultcost = $domdefaults{'intauth_cost'};
               if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
                   $defaultcost = 10;
               }
               if (int($rest[0])<int($defaultcost)) {
                   if ($domdefaults{'intauth_check'} == 1) {
                       my $ncpass = &hash_passwd($domain,$plainpass);
                       if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
                           &update_passwd_history($user,$domain,'internal','update cost');
                           &logthis("Validated password hashed with bcrypt for $user:$domain");
                       }
                       return 1;
                   } elsif ($domdefaults{'intauth_check'} == 2) {
                       return 0;
                   }
               }
           } else {
               return 1;
           }
       }
       return 0;
   }
   
   sub get_last_authchg {
       my ($domain,$user) = @_;
       my $lastmod;
       my $logname = &propath($domain,$user).'/passwd.log';
       if (-e "$logname") {
           $lastmod = (stat("$logname"))[9];
       }
       return $lastmod;
   }
   
 sub krb4_authen {  sub krb4_authen {
     my ($password,$null,$user,$contentpwd) = @_;      my ($password,$null,$user,$contentpwd) = @_;
     my $validated = 0;      my $validated = 0;
Line 7239  sub change_unix_password { Line 8268  sub change_unix_password {
   
   
 sub make_passwd_file {  sub make_passwd_file {
     my ($uname,$udom,$umode,$npass,$passfilename)=@_;      my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
     my $result="ok";      my $result="ok";
     if ($umode eq 'krb4' or $umode eq 'krb5') {      if ($umode eq 'krb4' or $umode eq 'krb5') {
  {   {
     my $pf = IO::File->new(">$passfilename");      my $pf = IO::File->new(">$passfilename");
     if ($pf) {      if ($pf) {
  print $pf "$umode:$npass\n";   print $pf "$umode:$npass\n";
                   &update_passwd_history($uname,$udom,$umode,$action);
     } else {      } else {
  $result = "pass_file_failed_error";   $result = "pass_file_failed_error";
     }      }
  }   }
     } elsif ($umode eq 'internal') {      } elsif ($umode eq 'internal') {
  my $salt=time;          my $ncpass = &hash_passwd($udom,$npass);
  $salt=substr($salt,6,2);  
  my $ncpass=crypt($npass,$salt);  
  {   {
     &Debug("Creating internal auth");      &Debug("Creating internal auth");
     my $pf = IO::File->new(">$passfilename");      my $pf = IO::File->new(">$passfilename");
     if($pf) {      if($pf) {
  print $pf "internal:$ncpass\n";    print $pf "internal:$ncpass\n"; 
                   &update_passwd_history($uname,$udom,$umode,$action);
     } else {      } else {
  $result = "pass_file_failed_error";   $result = "pass_file_failed_error";
     }      }
Line 7268  sub make_passwd_file { Line 8297  sub make_passwd_file {
     my $pf = IO::File->new(">$passfilename");      my $pf = IO::File->new(">$passfilename");
     if($pf) {      if($pf) {
  print $pf "localauth:$npass\n";   print $pf "localauth:$npass\n";
                   &update_passwd_history($uname,$udom,$umode,$action);
     } else {      } else {
  $result = "pass_file_failed_error";   $result = "pass_file_failed_error";
     }      }
  }   }
     } elsif ($umode eq 'unix') {      } elsif ($umode eq 'unix') {
  {   &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
     #   $result="no_new_unix_accounts";
     #  Don't allow the creation of privileged accounts!!! that would  
     #  be real bad!!!  
     #  
     my $uid = getpwnam($uname);  
     if((defined $uid) && ($uid == 0)) {  
  &logthis(">>>Attempt to create privileged account blocked");  
  return "no_priv_account_error\n";  
     }  
   
     my $execpath       ="$perlvar{'lonDaemons'}/"."lcuseradd";  
   
     my $lc_error_file  = $execdir."/tmp/lcuseradd".$$.".status";  
     {  
  &Debug("Executing external: ".$execpath);  
  &Debug("user  = ".$uname.", Password =". $npass);  
  my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");  
  print $se "$uname\n";  
                 print $se "$udom\n";  
  print $se "$npass\n";  
  print $se "$npass\n";  
  print $se "$lc_error_file\n"; # Status -> unique file.  
     }  
     if (-r $lc_error_file) {  
  &Debug("Opening error file: $lc_error_file");  
  my $error = IO::File->new("< $lc_error_file");  
  my $useraddok = <$error>;  
  $error->close;  
  unlink($lc_error_file);  
   
  chomp $useraddok;  
   
  if($useraddok > 0) {  
     my $error_text = &lcuseraddstrerror($useraddok);  
     &logthis("Failed lcuseradd: $error_text");  
     $result = "lcuseradd_failed:$error_text";  
  }  else {  
     my $pf = IO::File->new(">$passfilename");  
     if($pf) {  
  print $pf "unix:\n";  
     } else {  
  $result = "pass_file_failed_error";  
     }  
  }  
     }  else {  
  &Debug("Could not locate lcuseradd error: $lc_error_file");  
  $result="bug_lcuseradd_no_output_file";  
     }  
  }  
     } elsif ($umode eq 'none') {      } elsif ($umode eq 'none') {
  {   {
     my $pf = IO::File->new("> $passfilename");      my $pf = IO::File->new("> $passfilename");
Line 7386  sub get_usersession_config { Line 8368  sub get_usersession_config {
     return;      return;
 }  }
   
   sub get_usersearch_config {
       my ($dom,$name) = @_;
       my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
       if (defined($cached)) {
           return $usersearchconf;
       } else {
           my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
           &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);
           return $domconfig{'directorysrch'};
       }
       return;
   }
   
 sub distro_and_arch {  sub distro_and_arch {
     return $dist.':'.$arch;      return $dist.':'.$arch;
Removed from v.1.489.2.4  
changed lines
  Added in v.1.489.2.43.2.5

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