--- loncom/lond 2006/05/18 19:57:59 1.330
+++ loncom/lond 2006/06/07 01:49:43 1.333
@@ -2,7 +2,7 @@
# The LearningOnline Network
# lond "LON Daemon" Server (port "LOND" 5663)
#
-# $Id: lond,v 1.330 2006/05/18 19:57:59 albertel Exp $
+# $Id: lond,v 1.333 2006/06/07 01:49:43 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -58,9 +58,8 @@ my $DEBUG = 0; # Non zero to ena
my $status='';
my $lastlog='';
-my $lond_max_wait_time = 13;
-my $VERSION='$Revision: 1.330 $'; #' stupid emacs
+my $VERSION='$Revision: 1.333 $'; #' stupid emacs
my $remoteVERSION;
my $currenthostid="default";
my $currentdomainid;
@@ -940,190 +939,6 @@ sub EditFile {
return "ok\n";
}
-#---------------------------------------------------------------
-#
-# Manipulation of hash based databases (factoring out common code
-# for later use as we refactor.
-#
-# Ties a domain level resource file to a hash.
-# If requested a history entry is created in the associated hist file.
-#
-# Parameters:
-# domain - Name of the domain in which the resource file lives.
-# namespace - Name of the hash within that domain.
-# how - How to tie the hash (e.g. GDBM_WRCREAT()).
-# loghead - Optional parameter, if present a log entry is created
-# in the associated history file and this is the first part
-# of that entry.
-# logtail - Goes along with loghead, The actual logentry is of the
-# form $loghead:<timestamp>:logtail.
-# Returns:
-# Reference to a hash bound to the db file or alternatively undef
-# if the tie failed.
-#
-sub tie_domain_hash {
- my ($domain,$namespace,$how,$loghead,$logtail) = @_;
-
- # Filter out any whitespace in the domain name:
-
- $domain =~ s/\W//g;
-
- # We have enough to go on to tie the hash:
-
- my $user_top_dir = $perlvar{'lonUsersDir'};
- my $domain_dir = $user_top_dir."/$domain";
- my $resource_file = $domain_dir."/$namespace";
- return &_locking_hash_tie($resource_file,$namespace,$how,$loghead,$logtail);
-}
-
-sub untie_domain_hash {
- return &_locking_hash_untie(@_);
-}
-#
-# Ties a user's resource file to a hash.
-# If necessary, an appropriate history
-# log file entry is made as well.
-# This sub factors out common code from the subs that manipulate
-# the various gdbm files that keep keyword value pairs.
-# Parameters:
-# domain - Name of the domain the user is in.
-# user - Name of the 'current user'.
-# namespace - Namespace representing the file to tie.
-# how - What the tie is done to (e.g. GDBM_WRCREAT().
-# loghead - Optional first part of log entry if there may be a
-# history file.
-# what - Optional tail of log entry if there may be a history
-# file.
-# Returns:
-# hash to which the database is tied. It's up to the caller to untie.
-# undef if the has could not be tied.
-#
-sub tie_user_hash {
- my ($domain,$user,$namespace,$how,$loghead,$what) = @_;
-
- $namespace=~s/\//\_/g; # / -> _
- $namespace=~s/\W//g; # whitespace eliminated.
- my $proname = propath($domain, $user);
-
- my $file_prefix="$proname/$namespace";
- return &_locking_hash_tie($file_prefix,$namespace,$how,$loghead,$what);
-}
-
-sub untie_user_hash {
- return &_locking_hash_untie(@_);
-}
-
-# internal routines that handle the actual tieing and untieing process
-
-sub _do_hash_tie {
- my ($file_prefix,$namespace,$how,$loghead,$what) = @_;
- my %hash;
- if(tie(%hash, 'GDBM_File', "$file_prefix.db", $how, 0640)) {
- # If this is a namespace for which a history is kept,
- # make the history log entry:
- if (($namespace !~/^nohist\_/) && (defined($loghead))) {
- my $args = scalar @_;
- Debug(" Opening history: $file_prefix $args");
- my $hfh = IO::File->new(">>$file_prefix.hist");
- if($hfh) {
- my $now = time;
- print $hfh "$loghead:$now:$what\n";
- }
- $hfh->close;
- }
- return \%hash;
- } else {
- return undef;
- }
-}
-
-sub _do_hash_untie {
- my ($hashref) = @_;
- my $result = untie(%$hashref);
- return $result;
-}
-
-{
- my $sym;
-
- sub _locking_hash_tie {
- my ($file_prefix,$namespace,$how,$loghead,$what) = @_;
- my $lock_type=LOCK_SH;
-# Are we reading or writing?
- if ($how eq &GDBM_READER()) {
-# We are reading
- if (!open($sym,"$file_prefix.db.lock")) {
-# We don't have a lock file. This could mean
-# - that there is no such db-file
-# - that it does not have a lock file yet
- if ((! -e "$file_prefix.db") && (! -e "$file_prefix.db.gz")) {
-# No such file. Forget it.
- $! = 2;
- return undef;
- }
-# Apparently just no lock file yet. Make one
- open($sym,">>$file_prefix.db.lock");
- }
-# Do a shared lock
- if (!&flock_sym(LOCK_SH)) { return undef; }
-# If this is compressed, we will actually need an exclusive lock
- if (-e "$file_prefix.db.gz") {
- if (!&flock_sym(LOCK_EX)) { return undef; }
- }
- } elsif ($how eq &GDBM_WRCREAT()) {
-# We are writing
- open($sym,">>$file_prefix.db.lock");
-# Writing needs exclusive lock
- if (!&flock_sym(LOCK_EX)) { return undef; }
- } else {
- &logthis("Unknown method $how for $file_prefix");
- die();
- }
-# The file is ours!
-# If it is archived, un-archive it now
- if (-e "$file_prefix.db.gz") {
- system("gunzip $file_prefix.db.gz");
- if (-e "$file_prefix.hist.gz") {
- system("gunzip $file_prefix.hist.gz");
- }
- }
-# Change access mode to non-blocking
- $how=$how|&GDBM_NOLOCK();
-# Go ahead and tie the hash
- return &_do_hash_tie($file_prefix,$namespace,$how,$loghead,$what);
- }
-
- sub flock_sym {
- my ($lock_type)=@_;
- my $failed=0;
- eval {
- local $SIG{__DIE__}='DEFAULT';
- local $SIG{ALRM}=sub {
- $failed=1;
- die("failed lock");
- };
- alarm($lond_max_wait_time);
- flock($sym,$lock_type);
- alarm(0);
- };
- if ($failed) {
- $! = 100; # throwing error # 100
- return undef;
- } else {
- return 1;
- }
- }
-
- sub _locking_hash_untie {
- my ($hashref) = @_;
- my $result = untie(%$hashref);
- flock($sym,LOCK_UN);
- close($sym);
- undef($sym);
- return $result;
- }
-}
-
# read_profile
#
# Returns a set of specific entries from a user's profile file.
@@ -2311,6 +2126,7 @@ sub token_auth_user_file_handler {
my $reply="non_auth\n";
if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
$session.'.id')) {
+ flock(ENVIN,LOCK_SH);
while (my $line=<ENVIN>) {
my ($envname)=split(/=/,$line,2);
$envname=&unescape($envname);
@@ -3472,10 +3288,10 @@ sub put_course_id_handler {
my @new_items = split(/:/,$courseinfo);
my $numnew = scalar(@new_items);
if ($numcurrent > 0) {
- if ($numnew == 1) { # flushcourselogs() from 1.1 or earlier
- $courseinfo .= ':'.join(':',@current_items);
- } elsif ($numnew == 2) { # flushcourselogs() from 1.2.X
- $courseinfo .= ':'.$current_items[$numcurrent-1];
+ if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
+ for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
+ $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
+ }
}
}
$hashref->{$key}=$courseinfo.':'.$now;
@@ -3535,7 +3351,8 @@ sub dump_course_id_handler {
my $userinput = "$cmd:$tail";
- my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter) =split(/:/,$tail);
+ my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
+ $typefilter) =split(/:/,$tail);
if (defined($description)) {
$description=&unescape($description);
} else {
@@ -3556,16 +3373,21 @@ sub dump_course_id_handler {
} else {
$coursefilter='.';
}
+ if (defined($typefilter)) {
+ $typefilter=&unescape($typefilter);
+ } else {
+ $typefilter='.';
+ }
unless (defined($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,$inst_code,$owner);
+ my ($descr,$lasttime,$inst_code,$owner,$type);
my @courseitems = split(/:/,$value);
$lasttime = pop(@courseitems);
- ($descr,$inst_code,$owner)=@courseitems;
+ ($descr,$inst_code,$owner,$type)=@courseitems;
if ($lasttime<$since) { next; }
my $match = 1;
unless ($description eq '.') {
@@ -3592,6 +3414,18 @@ sub dump_course_id_handler {
$match = 0;
}
}
+ unless ($typefilter eq '.' || !defined($typefilter)) {
+ my $unescapeType = &unescape($type);
+ if (!defined($type)) {
+ if ($typefilter ne 'Course') {
+ $match = 0;
+ }
+ } else {
+ unless (eval('$unescapeType=~/^\Q$typefilter\E$/')) {
+ $match = 0;
+ }
+ }
+ }
if ($match == 1) {
$qresult.=$key.'='.$descr.':'.$inst_code.':'.$owner.'&';
}
@@ -5280,18 +5114,6 @@ sub sub_sql_reply {
return $answer;
}
-# -------------------------------------------- Return path to profile directory
-
-sub propath {
- my ($udom,$uname)=@_;
- $udom=~s/\W//g;
- $uname=~s/\W//g;
- my $subdir=$uname.'__';
- $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
- my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
- return $proname;
-}
-
# --------------------------------------- Is this the home server of an author?
sub ishome {