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Diff for /loncom/lond between versions 1.233 and 1.249

version 1.233, 2004/08/18 17:43:05 version 1.249, 2004/09/07 10:05:23
Line 1282  sub push_file_handler { Line 1282  sub push_file_handler {
 }  }
 &register_handler("pushfile", \&push_file_handler, 1, 0, 1);  &register_handler("pushfile", \&push_file_handler, 1, 0, 1);
   
   #
   #   du  - list the disk usuage of a directory recursively. 
   #    
   #   note: stolen code from the ls file handler
   #   under construction by Rick Banghart 
   #    .
   # Parameters:
   #    $cmd        - The command that dispatched us (du).
   #    $ududir     - The directory path to list... I'm not sure what this
   #                  is relative as things like ls:. return e.g.
   #                  no_such_dir.
   #    $client     - Socket open on the client.
   # Returns:
   #     1 - indicating that the daemon should not disconnect.
   # Side Effects:
   #   The reply is written to  $client.
   #
   
   sub du_handler {
       my ($cmd, $ududir, $client) = @_;
       if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
    &Failure($client,"refused\n","$cmd:$ududir");
    return 1;
       }
       #  Since $ududir could have some nasties in it,
       #  we will require that ududir is a valid
       #  directory.  Just in case someone tries to
       #  slip us a  line like .;(cd /home/httpd rm -rf*)
       #  etc.
       #
       if (-d $ududir) {
    #  And as Shakespeare would say to make
    #  assurance double sure, quote the $ududir
    #  This is in case someone manages to first
    #  e.g. fabricate a valid directory with a ';'
    #  in it.  Quoting the dir will help
    #  keep $ududir completely interpreted as a 
    #  directory.
    # 
    my $duout = `du -ks "$ududir" 2>/dev/null`;
    $duout=~s/[^\d]//g; #preserve only the numbers
    &Reply($client,"$duout\n","$cmd:$ududir");
       } else {
    &Failure($client, "bad_directory:$ududir", $userinput);
       }
       return 1;
   }
   &register_handler("du", \&du_handler, 0, 1, 0);
   
   
   #
   #   ls  - list the contents of a directory.  For each file in the
   #    selected directory the filename followed by the full output of
   #    the stat function is returned.  The returned info for each
   #    file are separated by ':'.  The stat fields are separated by &'s.
   # Parameters:
   #    $cmd        - The command that dispatched us (ls).
   #    $ulsdir     - The directory path to list... I'm not sure what this
   #                  is relative as things like ls:. return e.g.
   #                  no_such_dir.
   #    $client     - Socket open on the client.
   # Returns:
   #     1 - indicating that the daemon should not disconnect.
   # Side Effects:
   #   The reply is written to  $client.
   #
   sub ls_handler {
       my ($cmd, $ulsdir, $client) = @_;
   
       my $userinput = "$cmd:$ulsdir";
   
       my $obs;
       my $rights;
       my $ulsout='';
       my $ulsfn;
       if (-e $ulsdir) {
    if(-d $ulsdir) {
       if (opendir(LSDIR,$ulsdir)) {
    while ($ulsfn=readdir(LSDIR)) {
       undef $obs, $rights; 
       my @ulsstats=stat($ulsdir.'/'.$ulsfn);
       #We do some obsolete checking here
       if(-e $ulsdir.'/'.$ulsfn.".meta") { 
    open(FILE, $ulsdir.'/'.$ulsfn.".meta");
    my @obsolete=<FILE>;
    foreach my $obsolete (@obsolete) {
       if($obsolete =~ m|(<obsolete>)(on)|) { $obs = 1; } 
       if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
    }
       }
       $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
       if($obs eq '1') { $ulsout.="&1"; }
       else { $ulsout.="&0"; }
       if($rights eq '1') { $ulsout.="&1:"; }
       else { $ulsout.="&0:"; }
    }
    closedir(LSDIR);
       }
    } else {
       my @ulsstats=stat($ulsdir);
       $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
    }
       } else {
    $ulsout='no_such_dir';
       }
       if ($ulsout eq '') { $ulsout='empty'; }
       &Reply($client, "$ulsout\n", $userinput); # This supports debug logging.
       
       return 1;
   
   }
   &register_handler("ls", \&ls_handler, 0, 1, 0);
   
   
   
   
 #   Process a reinit request.  Reinit requests that either  #   Process a reinit request.  Reinit requests that either
Line 1843  sub remove_user_file_handler { Line 1957  sub remove_user_file_handler {
  if (-e $udir) {   if (-e $udir) {
     my $file=$udir.'/userfiles/'.$ufile;      my $file=$udir.'/userfiles/'.$ufile;
     if (-e $file) {      if (-e $file) {
  unlink($file);          if (-f $file){
       unlink($file);
    } elsif(-d $file) {
       rmdir($file);
    }
  if (-e $file) {   if (-e $file) {
     &Failure($client, "failed\n", "$cmd:$tail");      &Failure($client, "failed\n", "$cmd:$tail");
  } else {   } else {
Line 1860  sub remove_user_file_handler { Line 1978  sub remove_user_file_handler {
 }  }
 &register_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);  &register_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
   
   #
   #   make a directory in a user's home directory userfiles subdirectory.
   # Parameters:
   #    cmd   - the Lond request keyword that got us here.
   #    tail  - the part of the command past the keyword.
   #    client- File descriptor connected with the client.
   #
   # Returns:
   #    1    - Continue processing.
   
   sub mkdir_user_file_handler {
       my ($cmd, $tail, $client) = @_;
   
       my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
       $dir=&unescape($dir);
       my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
       if ($ufile =~m|/\.\./|) {
    # any files paths with /../ in them refuse 
    # to deal with
    &Failure($client, "refused\n", "$cmd:$tail");
       } else {
    my $udir = &propath($udom,$uname);
    if (-e $udir) {
       my $newdir=$udir.'/userfiles/'.$ufile;
       if (!-e $newdir) {
    mkdir($newdir);
    if (!-e $newdir) {
       &Failure($client, "failed\n", "$cmd:$tail");
    } else {
       &Reply($client, "ok\n", "$cmd:$tail");
    }
       } else {
    &Failure($client, "not_found\n", "$cmd:$tail");
       }
    } else {
       &Failure($client, "not_home\n", "$cmd:$tail");
    }
       }
       return 1;
   }
   &register_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
   
   #
   #   rename a file in a user's home directory userfiles subdirectory.
   # Parameters:
   #    cmd   - the Lond request keyword that got us here.
   #    tail  - the part of the command past the keyword.
   #    client- File descriptor connected with the client.
   #
   # Returns:
   #    1    - Continue processing.
   
   sub rename_user_file_handler {
       my ($cmd, $tail, $client) = @_;
   
       my ($udom,$uname,$old,$new) = split(/:/, $tail);
       $old=&unescape($old);
       $new=&unescape($new);
       if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
    # any files paths with /../ in them refuse to deal with
    &Failure($client, "refused\n", "$cmd:$tail");
       } else {
    my $udir = &propath($udom,$uname);
    if (-e $udir) {
       my $oldfile=$udir.'/userfiles/'.$old;
       my $newfile=$udir.'/userfiles/'.$new;
       if (-e $newfile) {
    &Failure($client, "exists\n", "$cmd:$tail");
       } elsif (! -e $oldfile) {
    &Failure($client, "not_found\n", "$cmd:$tail");
       } else {
    if (!rename($oldfile,$newfile)) {
       &Failure($client, "failed\n", "$cmd:$tail");
    } else {
       &Reply($client, "ok\n", "$cmd:$tail");
    }
       }
    } else {
       &Failure($client, "not_home\n", "$cmd:$tail");
    }
       }
       return 1;
   }
   &register_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
   
   
 #  #
 #  Authenticate access to a user file by checking the user's   #  Authenticate access to a user file by checking the user's 
Line 2023  sub put_user_profile_entry { Line 2226  sub put_user_profile_entry {
   
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
           
     my ($udom,$uname,$namespace,$what) =split(/:/,$tail);      my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
     if ($namespace ne 'roles') {      if ($namespace ne 'roles') {
  chomp($what);   chomp($what);
  my $hashref = &tie_user_hash($udom, $uname, $namespace,   my $hashref = &tie_user_hash($udom, $uname, $namespace,
Line 2696  sub restore_handler { Line 2899  sub restore_handler {
   
 }  }
 &register_handler("restore", \&restore_handler, 0,1,0);  &register_handler("restore", \&restore_handler, 0,1,0);
   
   #
   #   Add a chat message to to a discussion board.
   #
   # Parameters:
   #    $cmd                - Request keyword.
   #    $tail               - Tail of the command. A colon separated list
   #                          containing:
   #                          cdom    - Domain on which the chat board lives
   #                          cnum    - Identifier of the discussion group.
   #                          post    - Body of the posting.
   #   $client              - Socket open on the client.
   # Returns:
   #   1    - Indicating caller should keep on processing.
   #
   # Side-effects:
   #   writes a reply to the client.
   #
   #
   sub send_chat_handler {
       my ($cmd, $tail, $client) = @_;
   
       
       my $userinput = "$cmd:$tail";
   
       my ($cdom,$cnum,$newpost)=split(/\:/,$tail);
       &chat_add($cdom,$cnum,$newpost);
       &Reply($client, "ok\n", $userinput);
   
       return 1;
   }
   &register_handler("chatsend", \&send_chat_handler, 0, 1, 0);
   #
   #   Retrieve the set of chat messagss from a discussion board.
   #
   #  Parameters:
   #    $cmd             - Command keyword that initiated the request.
   #    $tail            - Remainder of the request after the command
   #                       keyword.  In this case a colon separated list of
   #                       chat domain    - Which discussion board.
   #                       chat id        - Discussion thread(?)
   #                       domain/user    - Authentication domain and username
   #                                        of the requesting person.
   #   $client           - Socket open on the client program.
   # Returns:
   #    1     - continue processing
   # Side effects:
   #    Response is written to the client.
   #
   sub retrieve_chat_handler {
       my ($cmd, $tail, $client) = @_;
   
   
       my $userinput = "$cmd:$tail";
   
       my ($cdom,$cnum,$udom,$uname)=split(/\:/,$tail);
       my $reply='';
       foreach (&get_chat($cdom,$cnum,$udom,$uname)) {
    $reply.=&escape($_).':';
       }
       $reply=~s/\:$//;
       &Reply($client, $reply."\n", $userinput);
   
   
       return 1;
   }
   &register_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
   
   #
   #  Initiate a query of an sql database.  SQL query repsonses get put in
   #  a file for later retrieval.  This prevents sql query results from
   #  bottlenecking the system.  Note that with loncnew, perhaps this is
   #  less of an issue since multiple outstanding requests can be concurrently
   #  serviced.
   #
   #  Parameters:
   #     $cmd       - COmmand keyword that initiated the request.
   #     $tail      - Remainder of the command after the keyword.
   #                  For this function, this consists of a query and
   #                  3 arguments that are self-documentingly labelled
   #                  in the original arg1, arg2, arg3.
   #     $client    - Socket open on the client.
   # Return:
   #    1   - Indicating processing should continue.
   # Side-effects:
   #    a reply is written to $client.
   #
   sub send_query_handler {
       my ($cmd, $tail, $client) = @_;
   
   
       my $userinput = "$cmd:$tail";
   
       my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
       $query=~s/\n*$//g;
       &Reply($client, "". &sql_reply("$clientname\&$query".
    "\&$arg1"."\&$arg2"."\&$arg3")."\n",
     $userinput);
       
       return 1;
   }
   &register_handler("querysend", \&send_query_handler, 0, 1, 0);
   
   #
   #   Add a reply to an sql query.  SQL queries are done asyncrhonously.
   #   The query is submitted via a "querysend" transaction.
   #   There it is passed on to the lonsql daemon, queued and issued to
   #   mysql.
   #     This transaction is invoked when the sql transaction is complete
   #   it stores the query results in flie and indicates query completion.
   #   presumably local software then fetches this response... I'm guessing
   #   the sequence is: lonc does a querysend, we ask lonsql to do it.
   #   lonsql on completion of the query interacts with the lond of our
   #   client to do a query reply storing two files:
   #    - id     - The results of the query.
   #    - id.end - Indicating the transaction completed. 
   #    NOTE: id is a unique id assigned to the query and querysend time.
   # Parameters:
   #    $cmd        - Command keyword that initiated this request.
   #    $tail       - Remainder of the tail.  In this case that's a colon
   #                  separated list containing the query Id and the 
   #                  results of the query.
   #    $client     - Socket open on the client.
   # Return:
   #    1           - Indicating that we should continue processing.
   # Side effects:
   #    ok written to the client.
   #
   sub reply_query_handler {
       my ($cmd, $tail, $client) = @_;
   
   
       my $userinput = "$cmd:$tail";
   
       my ($cmd,$id,$reply)=split(/:/,$userinput); 
       my $store;
       my $execdir=$perlvar{'lonDaemons'};
       if ($store=IO::File->new(">$execdir/tmp/$id")) {
    $reply=~s/\&/\n/g;
    print $store $reply;
    close $store;
    my $store2=IO::File->new(">$execdir/tmp/$id.end");
    print $store2 "done\n";
    close $store2;
    &Reply($client, "ok\n", $userinput);
       } else {
    &Failure($client, "error: ".($!+0)
    ." IO::File->new Failed ".
    "while attempting queryreply\n", $userinput);
       }
    
   
       return 1;
   }
   &register_handler("queryreply", \&reply_query_handler, 0, 1, 0);
   
   #
   #  Process the courseidput request.  Not quite sure what this means
   #  at the system level sense.  It appears a gdbm file in the 
   #  /home/httpd/lonUsers/$domain/nohist_courseids is tied and
   #  a set of entries made in that database.
   #
   # Parameters:
   #   $cmd      - The command keyword that initiated this request.
   #   $tail     - Tail of the command.  In this case consists of a colon
   #               separated list contaning the domain to apply this to and
   #               an ampersand separated list of keyword=value pairs.
   #   $client   - Socket open on the client.
   # Returns:
   #   1    - indicating that processing should continue
   #
   # Side effects:
   #   reply is written to the client.
   #
   sub put_course_id_handler {
       my ($cmd, $tail, $client) = @_;
   
   
       my $userinput = "$cmd:$tail";
   
       my ($udom, $what) = split(/:/, $tail);
       chomp($what);
       my $now=time;
       my @pairs=split(/\&/,$what);
   
       my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
       if ($hashref) {
    foreach my $pair (@pairs) {
       my ($key,$value)=split(/=/,$pair);
       $hashref->{$key}=$value.':'.$now;
    }
    if (untie(%$hashref)) {
       &Reply($client, "ok\n", $userinput);
    } else {
       &Failure( $client, "error: ".($!+0)
        ." untie(GDBM) Failed ".
        "while attempting courseidput\n", $userinput);
    }
       } else {
    &Failure( $client, "error: ".($!+0)
    ." tie(GDBM) Failed ".
    "while attempting courseidput\n", $userinput);
       }
   
       return 1;
   }
   &register_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
   
   #  Retrieves the value of a course id resource keyword pattern
   #  defined since a starting date.  Both the starting date and the
   #  keyword pattern are optional.  If the starting date is not supplied it
   #  is treated as the beginning of time.  If the pattern is not found,
   #  it is treatred as "." matching everything.
   #
   #  Parameters:
   #     $cmd     - Command keyword that resulted in us being dispatched.
   #     $tail    - The remainder of the command that, in this case, consists
   #                of a colon separated list of:
   #                 domain   - The domain in which the course database is 
   #                            defined.
   #                 since    - Optional parameter describing the minimum
   #                            time of definition(?) of the resources that
   #                            will match the dump.
   #                 description - regular expression that is used to filter
   #                            the dump.  Only keywords matching this regexp
   #                            will be used.
   #     $client  - The socket open on the client.
   # Returns:
   #    1     - Continue processing.
   # Side Effects:
   #   a reply is written to $client.
   sub dump_course_id_handler {
       my ($cmd, $tail, $client) = @_;
   
       my $userinput = "$cmd:$tail";
   
       my ($udom,$since,$description) =split(/:/,$tail);
       if (defined($description)) {
    $description=&unescape($description);
       } else {
    $description='.';
       }
       unless (defined($since)) { $since=0; }
       my $qresult='';
       my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
       if ($hashref) {
    while (my ($key,$value) = each(%$hashref)) {
       my ($descr,$lasttime,$inst_code);
       if ($value =~ m/^([^\:]*):([^\:]*):(\d+)$/) {
    ($descr,$inst_code,$lasttime)=($1,$2,$3);
       } else {
    ($descr,$lasttime) = split(/\:/,$value);
       }
       if ($lasttime<$since) { next; }
       if ($description eq '.') {
    $qresult.=$key.'='.$descr.':'.$inst_code.'&';
       } else {
    my $unescapeVal = &unescape($descr);
    if (eval('$unescapeVal=~/\Q$description\E/i')) {
       $qresult.=$key.'='.$descr.':'.$inst_code.'&';
    }
       }
    }
    if (untie(%$hashref)) {
       chop($qresult);
       &Reply($client, "$qresult\n", $userinput);
    } else {
       &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
       "while attempting courseiddump\n", $userinput);
    }
       } else {
    &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
    "while attempting courseiddump\n", $userinput);
       }
   
   
       return 1;
   }
   &register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
   
   #
   #  Puts an id to a domains id database. 
   #
   #  Parameters:
   #   $cmd     - The command that triggered us.
   #   $tail    - Remainder of the request other than the command. This is a 
   #              colon separated list containing:
   #              $domain  - The domain for which we are writing the id.
   #              $pairs  - The id info to write... this is and & separated list
   #                        of keyword=value.
   #   $client  - Socket open on the client.
   #  Returns:
   #    1   - Continue processing.
   #  Side effects:
   #     reply is written to $client.
   #
   sub put_id_handler {
       my ($cmd,$tail,$client) = @_;
   
   
       my $userinput = "$cmd:$tail";
   
       my ($udom,$what)=split(/:/,$tail);
       chomp($what);
       my @pairs=split(/\&/,$what);
       my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
      "P", $what);
       if ($hashref) {
    foreach my $pair (@pairs) {
       my ($key,$value)=split(/=/,$pair);
       $hashref->{$key}=$value;
    }
    if (untie(%$hashref)) {
       &Reply($client, "ok\n", $userinput);
    } else {
       &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
        "while attempting idput\n", $userinput);
    }
       } else {
    &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
     "while attempting idput\n", $userinput);
       }
   
       return 1;
   }
   
   &register_handler("idput", \&put_id_handler, 0, 1, 0);
   #
   #  Retrieves a set of id values from the id database.
   #  Returns an & separated list of results, one for each requested id to the
   #  client.
   #
   # Parameters:
   #   $cmd       - Command keyword that caused us to be dispatched.
   #   $tail      - Tail of the command.  Consists of a colon separated:
   #               domain - the domain whose id table we dump
   #               ids      Consists of an & separated list of
   #                        id keywords whose values will be fetched.
   #                        nonexisting keywords will have an empty value.
   #   $client    - Socket open on the client.
   #
   # Returns:
   #    1 - indicating processing should continue.
   # Side effects:
   #   An & separated list of results is written to $client.
   #
   sub get_id_handler {
       my ($cmd, $tail, $client) = @_;
   
       
       my $userinput = "$client:$tail";
       
       my ($udom,$what)=split(/:/,$tail);
       chomp($what);
       my @queries=split(/\&/,$what);
       my $qresult='';
       my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
       if ($hashref) {
    for (my $i=0;$i<=$#queries;$i++) {
       $qresult.="$hashref->{$queries[$i]}&";
    }
    if (untie(%$hashref)) {
       $qresult=~s/\&$//;
       &Reply($client, "$qresult\n", $userinput);
    } else {
       &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
         "while attempting idget\n",$userinput);
    }
       } else {
    &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
    "while attempting idget\n",$userinput);
       }
       
       return 1;
   }
   
   register_handler("idget", \&get_id_handler, 0, 1, 0);
   
   #
   #  Process the tmpput command I'm not sure what this does.. Seems to
   #  create a file in the lonDaemons/tmp directory of the form $id.tmp
   # where Id is the client's ip concatenated with a sequence number.
   # The file will contain some value that is passed in.  Is this e.g.
   # a login token?
   #
   # Parameters:
   #    $cmd     - The command that got us dispatched.
   #    $tail    - The remainder of the request following $cmd:
   #               In this case this will be the contents of the file.
   #    $client  - Socket connected to the client.
   # Returns:
   #    1 indicating processing can continue.
   # Side effects:
   #   A file is created in the local filesystem.
   #   A reply is sent to the client.
   sub tmp_put_handler {
       my ($cmd, $what, $client) = @_;
   
       my $userinput = "$cmd:$what"; # Reconstruct for logging.
   
   
       my $store;
       $tmpsnum++;
       my $id=$$.'_'.$clientip.'_'.$tmpsnum;
       $id=~s/\W/\_/g;
       $what=~s/\n//g;
       my $execdir=$perlvar{'lonDaemons'};
       if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
    print $store $what;
    close $store;
    &Reply($client, "$id\n", $userinput);
       } else {
    &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
     "while attempting tmpput\n", $userinput);
       }
       return 1;
     
   }
   &register_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
   #   Processes the tmpget command.  This command returns the contents
   #  of a temporary resource file(?) created via tmpput.
   #
   # Paramters:
   #    $cmd      - Command that got us dispatched.
   #    $id       - Tail of the command, contain the id of the resource
   #                we want to fetch.
   #    $client   - socket open on the client.
   # Return:
   #    1         - Inidcating processing can continue.
   # Side effects:
   #   A reply is sent to the client.
   
   #
   sub tmp_get_handler {
       my ($cmd, $id, $client) = @_;
   
       my $userinput = "$cmd:$id"; 
       
   
       $id=~s/\W/\_/g;
       my $store;
       my $execdir=$perlvar{'lonDaemons'};
       if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
    my $reply=<$store>;
    &Reply( $client, "$reply\n", $userinput);
    close $store;
       } else {
    &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
     "while attempting tmpget\n", $userinput);
       }
   
       return 1;
   }
   &register_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
   #
   #  Process the tmpdel command.  This command deletes a temp resource
   #  created by the tmpput command.
   #
   # Parameters:
   #   $cmd      - Command that got us here.
   #   $id       - Id of the temporary resource created.
   #   $client   - socket open on the client process.
   #
   # Returns:
   #   1     - Indicating processing should continue.
   # Side Effects:
   #   A file is deleted
   #   A reply is sent to the client.
   sub tmp_del_handler {
       my ($cmd, $id, $client) = @_;
       
       my $userinput= "$cmd:$id";
       
       chomp($id);
       $id=~s/\W/\_/g;
       my $execdir=$perlvar{'lonDaemons'};
       if (unlink("$execdir/tmp/$id.tmp")) {
    &Reply($client, "ok\n", $userinput);
       } else {
    &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
     "while attempting tmpdel\n", $userinput);
       }
       
       return 1;
   
   }
   &register_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
   #
   #   Processes the setannounce command.  This command
   #   creates a file named announce.txt in the top directory of
   #   the documentn root and sets its contents.  The announce.txt file is
   #   printed in its entirety at the LonCAPA login page.  Note:
   #   once the announcement.txt fileis created it cannot be deleted.
   #   However, setting the contents of the file to empty removes the
   #   announcement from the login page of loncapa so who cares.
   #
   # Parameters:
   #    $cmd          - The command that got us dispatched.
   #    $announcement - The text of the announcement.
   #    $client       - Socket open on the client process.
   # Retunrns:
   #   1             - Indicating request processing should continue
   # Side Effects:
   #   The file {DocRoot}/announcement.txt is created.
   #   A reply is sent to $client.
   #
   sub set_announce_handler {
       my ($cmd, $announcement, $client) = @_;
     
       my $userinput    = "$cmd:$announcement";
   
       chomp($announcement);
       $announcement=&unescape($announcement);
       if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
    '/announcement.txt')) {
    print $store $announcement;
    close $store;
    &Reply($client, "ok\n", $userinput);
       } else {
    &Failure($client, "error: ".($!+0)."\n", $userinput);
       }
   
       return 1;
   }
   &register_handler("setannounce", \&set_announce_handler, 0, 1, 0);
   #
   #  Return the version of the daemon.  This can be used to determine
   #  the compatibility of cross version installations or, alternatively to
   #  simply know who's out of date and who isn't.  Note that the version
   #  is returned concatenated with the tail.
   # Parameters:
   #   $cmd        - the request that dispatched to us.
   #   $tail       - Tail of the request (client's version?).
   #   $client     - Socket open on the client.
   #Returns:
   #   1 - continue processing requests.
   # Side Effects:
   #   Replies with version to $client.
   sub get_version_handler {
       my ($cmd, $tail, $client) = @_;
   
       my $userinput  = $cmd.$tail;
       
       &Reply($client, &version($userinput)."\n", $userinput);
   
   
       return 1;
   }
   &register_handler("version", \&get_version_handler, 0, 1, 0);
   #  Set the current host and domain.  This is used to support
   #  multihomed systems.  Each IP of the system, or even separate daemons
   #  on the same IP can be treated as handling a separate lonCAPA virtual
   #  machine.  This command selects the virtual lonCAPA.  The client always
   #  knows the right one since it is lonc and it is selecting the domain/system
   #  from the hosts.tab file.
   # Parameters:
   #    $cmd      - Command that dispatched us.
   #    $tail     - Tail of the command (domain/host requested).
   #    $socket   - Socket open on the client.
   #
   # Returns:
   #     1   - Indicates the program should continue to process requests.
   # Side-effects:
   #     The default domain/system context is modified for this daemon.
   #     a reply is sent to the client.
   #
   sub set_virtual_host_handler {
       my ($cmd, $tail, $socket) = @_;
     
       my $userinput  ="$cmd:$tail";
   
       &Reply($client, &sethost($userinput)."\n", $userinput);
   
   
       return 1;
   }
   &register_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
   
   #  Process a request to exit:
   #   - "bye" is sent to the client.
   #   - The client socket is shutdown and closed.
   #   - We indicate to the caller that we should exit.
   # Formal Parameters:
   #   $cmd                - The command that got us here.
   #   $tail               - Tail of the command (empty).
   #   $client             - Socket open on the tail.
   # Returns:
   #   0      - Indicating the program should exit!!
   #
   sub exit_handler {
       my ($cmd, $tail, $client) = @_;
   
       my $userinput = "$cmd:$tail";
   
       &logthis("Client $clientip ($clientname) hanging up: $userinput");
       &Reply($client, "bye\n", $userinput);
       $client->shutdown(2);        # shutdown the socket forcibly.
       $client->close();
   
       return 0;
   }
   &register_handler("exit", \&exit_handler, 0,1,1);
   &register_handler("init", \&exit_handler, 0,1,1);
   &register_handler("quit", \&exit_handler, 0,1,1);
   
   #  Determine if auto-enrollment is enabled.
   #  Note that the original had what I believe to be a defect.
   #  The original returned 0 if the requestor was not a registerd client.
   #  It should return "refused".
   # Formal Parameters:
   #   $cmd       - The command that invoked us.
   #   $tail      - The tail of the command (Extra command parameters.
   #   $client    - The socket open on the client that issued the request.
   # Returns:
   #    1         - Indicating processing should continue.
   #
   sub enrollment_enabled_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = $cmd.":".$tail; # For logging purposes.
   
       
       my $cdom = split(/:/, $tail);   # Domain we're asking about.
       my $outcome  = &localenroll::run($cdom);
       &Reply($client, "$outcome\n", $userinput);
   
       return 1;
   }
   &register_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
   
   #   Get the official sections for which auto-enrollment is possible.
   #   Since the admin people won't know about 'unofficial sections' 
   #   we cannot auto-enroll on them.
   # Formal Parameters:
   #    $cmd     - The command request that got us dispatched here.
   #    $tail    - The remainder of the request.  In our case this
   #               will be split into:
   #               $coursecode   - The course name from the admin point of view.
   #               $cdom         - The course's domain(?).
   #    $client  - Socket open on the client.
   # Returns:
   #    1    - Indiciting processing should continue.
   #
   sub get_sections_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
   
       my ($coursecode, $cdom) = split(/:/, $tail);
       my @secs = &localenroll::get_sections($coursecode,$cdom);
       my $seclist = &escape(join(':',@secs));
   
       &Reply($client, "$seclist\n", $userinput);
       
   
       return 1;
   }
   &register_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
   
   #   Validate the owner of a new course section.  
   #
   # Formal Parameters:
   #   $cmd      - Command that got us dispatched.
   #   $tail     - the remainder of the command.  For us this consists of a
   #               colon separated string containing:
   #                  $inst    - Course Id from the institutions point of view.
   #                  $owner   - Proposed owner of the course.
   #                  $cdom    - Domain of the course (from the institutions
   #                             point of view?)..
   #   $client   - Socket open on the client.
   #
   # Returns:
   #   1        - Processing should continue.
   #
   sub validate_course_owner_handler {
       my ($cmd, $tail, $client)  = @_;
       my $userinput = "$cmd:$tail";
       my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);
   
       my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
       &Reply($client, "$outcome\n", $userinput);
   
   
   
       return 1;
   }
   &register_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
   #
   #   Validate a course section in the official schedule of classes
   #   from the institutions point of view (part of autoenrollment).
   #
   # 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 words that will be split
   #                   into:
   #                        $inst_course_id - The course/section id from the
   #                                          institutions point of view.
   #                        $cdom           - The domain from the institutions
   #                                          point of view.
   #   $client       - Socket open on the client.
   # Returns:
   #    1           - Indicating processing should continue.
   #
   sub validate_course_section_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
       my ($inst_course_id, $cdom) = split(/:/, $tail);
   
       my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
       &Reply($client, "$outcome\n", $userinput);
   
   
       return 1;
   }
   &register_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
   
   #
   #   Create a password for a new auto-enrollment user.
   #   I think/guess, this password allows access to the institutions 
   #   AIS class list server/services.  Stuart can correct this comment
   #   when he finds out how wrong I am.
   #
   # 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 words that will be split into:
   #               $authparam - An authentication parameter (username??).
   #               $cdom      - The domain of the course from the institution's
   #                            point of view.
   #    $client  - The socket open on the client.
   # Returns:
   #    1 - continue processing.
   #
   sub create_auto_enroll_password_handler {
       my ($cmd, $tail, $client) = @_;
       my $userinput = "$cmd:$tail";
   
       my ($authparam, $cdom) = split(/:/, $userinput);
   
       my ($create_passwd,$authchk);
       ($authparam,
        $create_passwd,
        $authchk) = &localenroll::create_password($authparam,$cdom);
   
       &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
      $userinput);
   
   
       return 1;
   }
   &register_handler("autocreatepassword", \&create_auto_enroll_password_handler, 
     0, 1, 0);
   
   #   Retrieve and remove temporary files created by/during autoenrollment.
   #
   # Formal Parameters:
   #    $cmd      - The command that got us dispatched.
   #    $tail     - The tail of the command.  In our case this is a colon 
   #                separated list that will be split into:
   #                $filename - The name of the file to remove.
   #                            The filename is given as a path relative to
   #                            the LonCAPA temp file directory.
   #    $client   - Socket open on the client.
   #
   # Returns:
   #   1     - Continue processing.
   
   sub retrieve_auto_file_handler {
       my ($cmd, $tail, $client)    = @_;
       my $userinput                = "cmd:$tail";
   
       my ($filename)   = split(/:/, $tail);
   
       my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
       if ( (-e $source) && ($filename ne '') ) {
    my $reply = '';
    if (open(my $fh,$source)) {
       while (<$fh>) {
    chomp($_);
    $_ =~ s/^\s+//g;
    $_ =~ s/\s+$//g;
    $reply .= $_;
       }
       close($fh);
       &Reply($client, &escape($reply)."\n", $userinput);
   
   #   Does this have to be uncommented??!?  (RF).
   #
   #                                unlink($source);
    } else {
       &Failure($client, "error\n", $userinput);
    }
       } else {
    &Failure($client, "error\n", $userinput);
       }
       
   
       return 1;
   }
   &register_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
   
   #
   #   Read and retrieve institutional code format (for support form).
   # Formal Parameters:
   #    $cmd        - Command that dispatched us.
   #    $tail       - Tail of the command.  In this case it conatins 
   #                  the course domain and the coursename.
   #    $client     - Socket open on the client.
   # Returns:
   #    1     - Continue processing.
   #
   sub get_institutional_code_format_handler {
       my ($cmd, $tail, $client)   = @_;
       my $userinput               = "$cmd:$tail";
   
       my $reply;
       my($cdom,$course) = split(/:/,$tail);
       my @pairs = split/\&/,$course;
       my %instcodes = ();
       my %codes = ();
       my @codetitles = ();
       my %cat_titles = ();
       my %cat_order = ();
       foreach (@pairs) {
    my ($key,$value) = split/=/,$_;
    $instcodes{&unescape($key)} = &unescape($value);
       }
       my $formatreply = &localenroll::instcode_format($cdom,
       \%instcodes,
       \%codes,
       \@codetitles,
       \%cat_titles,
       \%cat_order);
       if ($formatreply eq 'ok') {
    my $codes_str = &hash2str(%codes);
    my $codetitles_str = &array2str(@codetitles);
    my $cat_titles_str = &hash2str(%cat_titles);
    my $cat_order_str = &hash2str(%cat_order);
    &Reply($client,
          $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
          .$cat_order_str."\n",
          $userinput);
       } else {
    # this else branch added by RF since if not ok, lonc will
    # hang waiting on reply until timeout.
    #
    &Reply($client, "format_error\n", $userinput);
       }
       
       return 1;
   }
   
   &register_handler("autoinstcodeformat", \&get_institutional_code_format_handler,
     0,1,0);
   
   #
   #
   #
 #  #
 #  #
 #---------------------------------------------------------------  #---------------------------------------------------------------
Line 2713  sub get_request { Line 3773  sub get_request {
     my $input = <$client>;      my $input = <$client>;
     chomp($input);      chomp($input);
   
     Debug("get_request: Request = $input\n");      &Debug("get_request: Request = $input\n");
   
     &status('Processing '.$clientname.':'.$input);      &status('Processing '.$clientname.':'.$input);
   
Line 2811  sub process_request { Line 3871  sub process_request {
   
 #------------------- Commands not yet in spearate handlers. --------------  #------------------- Commands not yet in spearate handlers. --------------
   
   
   
 # -------------------------------------------------------------------- chatsend  
    if ($userinput =~ /^chatsend/) {  
  if(isClient) {  
     my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput);  
     &chatadd($cdom,$cnum,$newpost);  
     print $client "ok\n";  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # -------------------------------------------------------------------- chatretr  
     } elsif ($userinput =~ /^chatretr/) {  
  if(isClient) {  
     my   
  ($cmd,$cdom,$cnum,$udom,$uname)=split(/\:/,$userinput);  
     my $reply='';  
     foreach (&getchat($cdom,$cnum,$udom,$uname)) {  
  $reply.=&escape($_).':';  
     }  
     $reply=~s/\:$//;  
     print $client $reply."\n";  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ------------------------------------------------------------------- querysend  
     } elsif ($userinput =~ /^querysend/) {  
  if (isClient) {  
     my ($cmd,$query,  
  $arg1,$arg2,$arg3)=split(/\:/,$userinput);  
     $query=~s/\n*$//g;  
     print $client "".  
  sqlreply("$clientname\&$query".  
  "\&$arg1"."\&$arg2"."\&$arg3")."\n";  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ------------------------------------------------------------------ queryreply  
     } elsif ($userinput =~ /^queryreply/) {  
  if(isClient) {  
     my ($cmd,$id,$reply)=split(/:/,$userinput);   
     my $store;  
     my $execdir=$perlvar{'lonDaemons'};  
     if ($store=IO::File->new(">$execdir/tmp/$id")) {  
  $reply=~s/\&/\n/g;  
  print $store $reply;  
  close $store;  
  my $store2=IO::File->new(">$execdir/tmp/$id.end");  
  print $store2 "done\n";  
  close $store2;  
  print $client "ok\n";  
     } else {  
  print $client "error: ".($!+0)  
     ." IO::File->new Failed ".  
     "while attempting queryreply\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ----------------------------------------------------------------- courseidput  
     } elsif ($userinput =~ /^courseidput/) {  
  if(isClient) {  
     my ($cmd,$udom,$what)=split(/:/,$userinput);  
     chomp($what);  
  $udom=~s/\W//g;  
     my $proname=  
  "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";  
     my $now=time;  
     my @pairs=split(/\&/,$what);  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {  
  foreach my $pair (@pairs) {  
     my ($key,$descr,$inst_code)=split(/=/,$pair);  
     $hash{$key}=$descr.':'.$inst_code.':'.$now;  
  }  
  if (untie(%hash)) {  
     print $client "ok\n";  
  } else {  
     print $client "error: ".($!+0)  
  ." untie(GDBM) Failed ".  
  "while attempting courseidput\n";  
  }  
     } else {  
  print $client "error: ".($!+0)  
     ." tie(GDBM) Failed ".  
     "while attempting courseidput\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ---------------------------------------------------------------- courseiddump  
     } elsif ($userinput =~ /^courseiddump/) {  
  if(isClient) {  
     my ($cmd,$udom,$since,$description)  
  =split(/:/,$userinput);  
     if (defined($description)) {  
  $description=&unescape($description);  
     } else {  
  $description='.';  
     }  
     unless (defined($since)) { $since=0; }  
     my $qresult='';  
     my $proname=  
  "$perlvar{'lonUsersDir'}/$udom/nohist_courseids";  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {  
  while (my ($key,$value) = each(%hash)) {  
     my ($descr,$lasttime,$inst_code);  
     if ($value =~ m/^([^\:]*):([^\:]*):(\d+)$/) {  
  ($descr,$inst_code,$lasttime)=($1,$2,$3);  
     } else {  
  ($descr,$lasttime) = split(/\:/,$value);  
     }  
     if ($lasttime<$since) { next; }  
     if ($description eq '.') {  
  $qresult.=$key.'='.$descr.':'.$inst_code.'&';  
     } else {  
  my $unescapeVal = &unescape($descr);  
  if (eval('$unescapeVal=~/\Q$description\E/i')) {  
     $qresult.=$key.'='.$descr.':'.$inst_code.'&';  
  }  
     }  
  }  
  if (untie(%hash)) {  
     chop($qresult);  
     print $client "$qresult\n";  
  } else {  
     print $client "error: ".($!+0)  
  ." untie(GDBM) Failed ".  
  "while attempting courseiddump\n";  
  }  
     } else {  
  print $client "error: ".($!+0)  
     ." tie(GDBM) Failed ".  
     "while attempting courseiddump\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ----------------------------------------------------------------------- idput  
     } elsif ($userinput =~ /^idput/) {  
  if(isClient) {  
     my ($cmd,$udom,$what)=split(/:/,$userinput);  
     chomp($what);  
     $udom=~s/\W//g;  
     my $proname="$perlvar{'lonUsersDir'}/$udom/ids";  
     my $now=time;  
     my @pairs=split(/\&/,$what);  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) {  
  {  
     my $hfh;  
     if ($hfh=IO::File->new(">>$proname.hist")) {  
  print $hfh "P:$now:$what\n";  
     }  
  }  
  foreach my $pair (@pairs) {  
     my ($key,$value)=split(/=/,$pair);  
     $hash{$key}=$value;  
  }  
  if (untie(%hash)) {  
     print $client "ok\n";  
  } else {  
     print $client "error: ".($!+0)  
  ." untie(GDBM) Failed ".  
  "while attempting idput\n";  
  }  
     } else {  
  print $client "error: ".($!+0)  
     ." tie(GDBM) Failed ".  
     "while attempting idput\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ----------------------------------------------------------------------- idget  
     } elsif ($userinput =~ /^idget/) {  
  if(isClient) {  
     my ($cmd,$udom,$what)=split(/:/,$userinput);  
     chomp($what);  
     $udom=~s/\W//g;  
     my $proname="$perlvar{'lonUsersDir'}/$udom/ids";  
     my @queries=split(/\&/,$what);  
     my $qresult='';  
     my %hash;  
     if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) {  
  for (my $i=0;$i<=$#queries;$i++) {  
     $qresult.="$hash{$queries[$i]}&";  
  }  
  if (untie(%hash)) {  
     $qresult=~s/\&$//;  
     print $client "$qresult\n";  
  } else {  
     print $client "error: ".($!+0)  
  ." untie(GDBM) Failed ".  
  "while attempting idget\n";  
  }  
     } else {  
  print $client "error: ".($!+0)  
     ." tie(GDBM) Failed ".  
     "while attempting idget\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ---------------------------------------------------------------------- tmpput  
     } elsif ($userinput =~ /^tmpput/) {  
  if(isClient) {  
     my ($cmd,$what)=split(/:/,$userinput);  
     my $store;  
     $tmpsnum++;  
     my $id=$$.'_'.$clientip.'_'.$tmpsnum;  
     $id=~s/\W/\_/g;  
     $what=~s/\n//g;  
     my $execdir=$perlvar{'lonDaemons'};  
     if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {  
  print $store $what;  
  close $store;  
  print $client "$id\n";  
     }  
     else {  
  print $client "error: ".($!+0)  
     ."IO::File->new Failed ".  
     "while attempting tmpput\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
   
 # ---------------------------------------------------------------------- tmpget  
     } elsif ($userinput =~ /^tmpget/) {  
  if(isClient) {  
     my ($cmd,$id)=split(/:/,$userinput);  
     chomp($id);  
     $id=~s/\W/\_/g;  
     my $store;  
     my $execdir=$perlvar{'lonDaemons'};  
     if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {  
  my $reply=<$store>;  
     print $client "$reply\n";  
  close $store;  
     }  
     else {  
  print $client "error: ".($!+0)  
     ."IO::File->new Failed ".  
     "while attempting tmpget\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ---------------------------------------------------------------------- tmpdel  
     } elsif ($userinput =~ /^tmpdel/) {  
  if(isClient) {  
     my ($cmd,$id)=split(/:/,$userinput);  
     chomp($id);  
     $id=~s/\W/\_/g;  
     my $execdir=$perlvar{'lonDaemons'};  
     if (unlink("$execdir/tmp/$id.tmp")) {  
  print $client "ok\n";  
     } else {  
  print $client "error: ".($!+0)  
     ."Unlink tmp Failed ".  
     "while attempting tmpdel\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ----------------------------------------- portfolio directory list (portls)  
     } elsif ($userinput =~ /^portls/) {  
  if(isClient) {  
     my ($cmd,$uname,$udom)=split(/:/,$userinput);  
     my $udir=propath($udom,$uname).'/userfiles/portfolio';  
     my $dirLine='';  
     my $dirContents='';  
     if (opendir(LSDIR,$udir.'/')){  
  while ($dirLine = readdir(LSDIR)){  
     $dirContents = $dirContents.$dirLine.'<br />';  
  }  
     } else {  
  $dirContents = "No directory found\n";  
     }  
     print $client $dirContents."\n";  
  } else {  
     Reply($client, "refused\n", $userinput);  
  }  
 # -------------------------------------------------------------------------- ls  
     } elsif ($userinput =~ /^ls/) {  
  if(isClient) {  
     my $obs;  
     my $rights;  
     my ($cmd,$ulsdir)=split(/:/,$userinput);  
     my $ulsout='';  
     my $ulsfn;  
     if (-e $ulsdir) {  
  if(-d $ulsdir) {  
     if (opendir(LSDIR,$ulsdir)) {  
  while ($ulsfn=readdir(LSDIR)) {  
     undef $obs, $rights;   
     my @ulsstats=stat($ulsdir.'/'.$ulsfn);  
     #We do some obsolete checking here  
     if(-e $ulsdir.'/'.$ulsfn.".meta") {   
  open(FILE, $ulsdir.'/'.$ulsfn.".meta");  
  my @obsolete=<FILE>;  
  foreach my $obsolete (@obsolete) {  
     if($obsolete =~ m|(<obsolete>)(on)|) { $obs = 1; }   
     if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }  
  }  
     }  
     $ulsout.=$ulsfn.'&'.join('&',@ulsstats);  
     if($obs eq '1') { $ulsout.="&1"; }  
     else { $ulsout.="&0"; }  
     if($rights eq '1') { $ulsout.="&1:"; }  
     else { $ulsout.="&0:"; }  
  }  
  closedir(LSDIR);  
     }  
  } else {  
     my @ulsstats=stat($ulsdir);  
     $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';  
  }  
     } else {  
  $ulsout='no_such_dir';  
     }  
     if ($ulsout eq '') { $ulsout='empty'; }  
     print $client "$ulsout\n";  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ----------------------------------------------------------------- setannounce  
     } elsif ($userinput =~ /^setannounce/) {  
  if (isClient) {  
     my ($cmd,$announcement)=split(/:/,$userinput);  
     chomp($announcement);  
     $announcement=&unescape($announcement);  
     if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.  
  '/announcement.txt')) {  
  print $store $announcement;  
  close $store;  
  print $client "ok\n";  
     } else {  
  print $client "error: ".($!+0)."\n";  
     }  
  } else {  
     Reply($client, "refused\n", $userinput);  
       
  }  
 # ------------------------------------------------------------------ Hanging up  
     } elsif (($userinput =~ /^exit/) ||  
      ($userinput =~ /^init/)) { # no restrictions.  
  &logthis(  
  "Client $clientip ($clientname) hanging up: $userinput");  
  print $client "bye\n";  
  $client->shutdown(2);        # shutdown the socket forcibly.  
  $client->close();  
  return 0;  
   
 # ---------------------------------- set current host/domain  
     } elsif ($userinput =~ /^sethost/) {  
  if (isClient) {  
     print $client &sethost($userinput)."\n";  
  } else {  
     print $client "refused\n";  
  }  
 #---------------------------------- request file (?) version.  
     } elsif ($userinput =~/^version/) {  
  if (isClient) {  
     print $client &version($userinput)."\n";  
  } else {  
     print $client "refused\n";  
  }  
 #------------------------------- is auto-enrollment enabled?  #------------------------------- is auto-enrollment enabled?
     } elsif ($userinput =~/^autorun/) {      if ($userinput =~/^autorun/) {
  if (isClient) {   if (isClient) {
     my ($cmd,$cdom) = split(/:/,$userinput);      my ($cmd,$cdom) = split(/:/,$userinput);
     my $outcome = &localenroll::run($cdom);      my $outcome = &localenroll::run($cdom);
Line 3266  sub process_request { Line 3944  sub process_request {
  } else {   } else {
     print $client "refused\n";      print $client "refused\n";
  }   }
 #---------------------  read and retrieve institutional code format (for support form).  #---------------------  read and retrieve institutional code format 
   #                          (for support form).
     } elsif ($userinput =~/^autoinstcodeformat/) {      } elsif ($userinput =~/^autoinstcodeformat/) {
  if (isClient) {   if (isClient) {
     my $reply;      my $reply;
Line 3849  sub reply { Line 4528  sub reply {
   
 # -------------------------------------------------------------- Talk to lonsql  # -------------------------------------------------------------- Talk to lonsql
   
 sub sqlreply {  sub sql_reply {
     my ($cmd)=@_;      my ($cmd)=@_;
     my $answer=subsqlreply($cmd);      my $answer=&sub_sql_reply($cmd);
     if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }      if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
     return $answer;      return $answer;
 }  }
   
 sub subsqlreply {  sub sub_sql_reply {
     my ($cmd)=@_;      my ($cmd)=@_;
     my $unixsock="mysqlsock";      my $unixsock="mysqlsock";
     my $peerfile="$perlvar{'lonSockDir'}/$unixsock";      my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
Line 4328  sub validate_user { Line 5007  sub validate_user {
     # At the end of this function. I'll ensure that it's not still that      # At the end of this function. I'll ensure that it's not still that
     # value so we don't just wind up returning some accidental value      # value so we don't just wind up returning some accidental value
     # as a result of executing an unforseen code path that      # as a result of executing an unforseen code path that
     # did not set $validated.      # did not set $validated.  At the end of valid execution paths,
       # validated shoule be 1 for success or 0 for failuer.
   
     my $validated = -3.14159;      my $validated = -3.14159;
   
Line 4416  sub validate_user { Line 5096  sub validate_user {
     #      #
   
     unless ($validated != -3.14159) {      unless ($validated != -3.14159) {
  die "ValidateUser - failed to set the value of validated";   #  I >really really< want to know if this happens.
    #  since it indicates that user authentication is badly
    #  broken in some code path.
           #
    die "ValidateUser - failed to set the value of validated $domain, $user $password";
     }      }
     return $validated;      return $validated;
 }  }
Line 4442  sub addline { Line 5126  sub addline {
     return $found;      return $found;
 }  }
   
 sub getchat {  sub get_chat {
     my ($cdom,$cname,$udom,$uname)=@_;      my ($cdom,$cname,$udom,$uname)=@_;
     my %hash;      my %hash;
     my $proname=&propath($cdom,$cname);      my $proname=&propath($cdom,$cname);
Line 4467  sub getchat { Line 5151  sub getchat {
     return (@participants,@entries);      return (@participants,@entries);
 }  }
   
 sub chatadd {  sub chat_add {
     my ($cdom,$cname,$newchat)=@_;      my ($cdom,$cname,$newchat)=@_;
     my %hash;      my %hash;
     my $proname=&propath($cdom,$cname);      my $proname=&propath($cdom,$cname);
Removed from v.1.233  
changed lines
  Added in v.1.249

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