version 1.1128, 2011/08/09 01:06:33
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version 1.1137, 2011/10/17 15:35:07
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Line 348 sub get_remote_globals {
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Line 348 sub get_remote_globals {
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sub remote_devalidate_cache { |
sub remote_devalidate_cache { |
my ($lonhost,$name,$id) = @_; |
my ($lonhost,$name,$id) = @_; |
my $response = &reply('devalidatecache',&escape($name).':'.&escape($id),$lonhost); |
my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost); |
return $response; |
return $response; |
} |
} |
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Line 1185 sub spares_for_offload {
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Line 1185 sub spares_for_offload {
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return; |
return; |
} |
} |
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sub get_lonbalancer_config { |
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my ($servers) = @_; |
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my ($currbalancer,$currtargets); |
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if (ref($servers) eq 'HASH') { |
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foreach my $server (keys(%{$servers})) { |
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my %what = ( |
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spareid => 1, |
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perlvar => 1, |
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); |
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my ($result,$returnhash) = &get_remote_globals($server,\%what); |
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if ($result eq 'ok') { |
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if (ref($returnhash) eq 'HASH') { |
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if (ref($returnhash->{'perlvar'}) eq 'HASH') { |
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if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') { |
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$currbalancer = $server; |
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$currtargets = {}; |
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if (ref($returnhash->{'spareid'}) eq 'HASH') { |
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if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') { |
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$currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'}; |
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} |
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if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') { |
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$currtargets->{'default'} = $returnhash->{'spareid'}->{'default'}; |
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} |
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} |
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last; |
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} |
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} |
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} |
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} |
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} |
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} |
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return ($currbalancer,$currtargets); |
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} |
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sub check_loadbalancing { |
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my ($uname,$udom) = @_; |
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my ($is_balancer,$dom_in_use,$homeintdom,$rule_in_effect, |
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$offloadto,$otherserver); |
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my $lonhost = $perlvar{'lonHostID'}; |
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my $uprimary_id = &Apache::lonnet::domain($udom,'primary'); |
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my $uintdom = &Apache::lonnet::internet_dom($uprimary_id); |
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my $intdom = &Apache::lonnet::internet_dom($lonhost); |
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my $serverhomedom = &host_domain($lonhost); |
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my $cachetime = 60*60*24; |
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|
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if (($uintdom ne '') && ($uintdom eq $intdom)) { |
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$dom_in_use = $udom; |
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$homeintdom = 1; |
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} else { |
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$dom_in_use = $serverhomedom; |
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} |
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my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use); |
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unless (defined($cached)) { |
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my %domconfig = |
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&Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use); |
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if (ref($domconfig{'loadbalancing'}) eq 'HASH') { |
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$result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime); |
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} |
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} |
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if (ref($result) eq 'HASH') { |
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my $currbalancer = $result->{'lonhost'}; |
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my $currtargets = $result->{'targets'}; |
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my $currrules = $result->{'rules'}; |
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if ($currbalancer ne '') { |
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my @hosts = ¤t_machine_ids(); |
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if (grep(/^\Q$currbalancer\E$/,@hosts)) { |
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$is_balancer = 1; |
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} |
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} |
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if ($is_balancer) { |
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if (ref($currrules) eq 'HASH') { |
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if ($homeintdom) { |
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if ($uname ne '') { |
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if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) { |
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my ($is_adv,$is_author) = &is_advanced_user($udom,$uname); |
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if (($currrules->{'_LC_author'} ne '') && ($is_author)) { |
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$rule_in_effect = $currrules->{'_LC_author'}; |
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} elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) { |
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$rule_in_effect = $currrules->{'_LC_adv'} |
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} |
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} |
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if ($rule_in_effect eq '') { |
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my %userenv = &userenvironment($udom,$uname,'inststatus'); |
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if ($userenv{'inststatus'} ne '') { |
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my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'}); |
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my ($othertitle,$usertypes,$types) = |
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&Apache::loncommon::sorted_inst_types($udom); |
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if (ref($types) eq 'ARRAY') { |
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foreach my $type (@{$types}) { |
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if (grep(/^\Q$type\E$/,@statuses)) { |
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if (exists($currrules->{$type})) { |
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$rule_in_effect = $currrules->{$type}; |
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} |
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} |
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} |
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} |
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} else { |
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if (exists($currrules->{'default'})) { |
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$rule_in_effect = $currrules->{'default'}; |
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} |
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} |
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} |
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} else { |
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if (exists($currrules->{'default'})) { |
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$rule_in_effect = $currrules->{'default'}; |
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} |
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} |
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} else { |
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if ($currrules->{'_LC_external'} ne '') { |
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$rule_in_effect = $currrules->{'_LC_external'}; |
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} |
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} |
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$offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets, |
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$uname,$udom); |
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} |
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} |
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} elsif (($homeintdom) && ($udom ne $serverhomedom)) { |
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my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom); |
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unless (defined($cached)) { |
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my %domconfig = |
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&Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom); |
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if (ref($domconfig{'loadbalancing'}) eq 'HASH') { |
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$result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime); |
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} |
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} |
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if (ref($result) eq 'HASH') { |
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my $currbalancer = $result->{'lonhost'}; |
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my $currtargets = $result->{'targets'}; |
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my $currrules = $result->{'rules'}; |
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if ($currbalancer eq $lonhost) { |
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$is_balancer = 1; |
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if (ref($currrules) eq 'HASH') { |
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if ($currrules->{'_LC_internetdom'} ne '') { |
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$rule_in_effect = $currrules->{'_LC_internetdom'}; |
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} |
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} |
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$offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets, |
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$uname,$udom); |
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} |
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} else { |
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if ($perlvar{'lonBalancer'} eq 'yes') { |
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$is_balancer = 1; |
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$offloadto = &this_host_spares($dom_in_use); |
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} |
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} |
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} else { |
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if ($perlvar{'lonBalancer'} eq 'yes') { |
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$is_balancer = 1; |
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$offloadto = &this_host_spares($dom_in_use); |
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} |
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} |
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my $lowest_load = 30000; |
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if (ref($offloadto) eq 'HASH') { |
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if (ref($offloadto->{'primary'}) eq 'ARRAY') { |
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foreach my $try_server (@{$offloadto->{'primary'}}) { |
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($otherserver,$lowest_load) = |
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&compare_server_load($try_server,$otherserver,$lowest_load); |
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} |
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} |
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my $found_server = ($otherserver ne '' && $lowest_load < 100); |
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if (!$found_server) { |
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if (ref($offloadto->{'default'}) eq 'ARRAY') { |
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foreach my $try_server (@{$offloadto->{'default'}}) { |
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($otherserver,$lowest_load) = |
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&compare_server_load($try_server,$otherserver,$lowest_load); |
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} |
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} |
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} |
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} elsif (ref($offloadto) eq 'ARRAY') { |
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if (@{$offloadto} == 1) { |
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$otherserver = $offloadto->[0]; |
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} elsif (@{$offloadto} > 1) { |
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foreach my $try_server (@{$offloadto}) { |
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($otherserver,$lowest_load) = |
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&compare_server_load($try_server,$otherserver,$lowest_load); |
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} |
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} |
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} |
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return ($is_balancer,$otherserver); |
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} |
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sub get_loadbalancer_targets { |
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my ($rule_in_effect,$currtargets,$uname,$udom) = @_; |
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my $offloadto; |
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if ($rule_in_effect eq '') { |
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$offloadto = $currtargets; |
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} else { |
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if ($rule_in_effect eq 'homeserver') { |
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my $homeserver = &homeserver($uname,$udom); |
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if ($homeserver ne 'no_host') { |
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$offloadto = [$homeserver]; |
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} |
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} elsif ($rule_in_effect eq 'externalbalancer') { |
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my %domconfig = |
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&Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom); |
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if (ref($domconfig{'loadbalancing'}) eq 'HASH') { |
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if ($domconfig{'loadbalancing'}{'lonhost'} ne '') { |
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if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') { |
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$offloadto = [$domconfig{'loadbalancing'}{'lonhost'}]; |
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} |
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} |
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} else { |
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my %servers = &dom_servers($udom); |
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my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers); |
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if (&hostname($remotebalancer) ne '') { |
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$offloadto = [$remotebalancer]; |
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} |
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} |
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} elsif (&hostname($rule_in_effect) ne '') { |
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$offloadto = [$rule_in_effect]; |
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} |
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} |
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return $offloadto; |
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} |
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sub internet_dom_servers { |
sub internet_dom_servers { |
my ($dom) = @_; |
my ($dom) = @_; |
my (%uniqservers,%servers); |
my (%uniqservers,%servers); |
Line 1994 sub is_cached_new {
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Line 2212 sub is_cached_new {
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my ($name,$id,$debug) = @_; |
my ($name,$id,$debug) = @_; |
$id=&make_key($name,$id); |
$id=&make_key($name,$id); |
if (exists($remembered{$id})) { |
if (exists($remembered{$id})) { |
if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); } |
if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); } |
$accessed{$id}=[&gettimeofday()]; |
$accessed{$id}=[&gettimeofday()]; |
$hits++; |
$hits++; |
return ($remembered{$id},1); |
return ($remembered{$id},1); |
Line 3768 sub hashref2str {
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Line 3986 sub hashref2str {
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$result.='='; |
$result.='='; |
#print("Got a ref of ".(ref($key))." skipping."); |
#print("Got a ref of ".(ref($key))." skipping."); |
} else { |
} else { |
if ($key) {$result.=&escape($key).'=';} else { last; } |
if (defined($key)) {$result.=&escape($key).'=';} else { last; } |
} |
} |
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if(ref($hashref->{$key}) eq 'ARRAY') { |
if(ref($hashref->{$key}) eq 'ARRAY') { |
Line 5961 sub allowed {
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Line 6179 sub allowed {
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} |
} |
return 'F'; |
return 'F'; |
} |
} |
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# |
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# Removes the versino from a URI and |
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# splits it in to its filename and path to the filename. |
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# Seems like File::Basename could have done this more clearly. |
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# Parameters: |
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# $uri - input URI |
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# Returns: |
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# Two element list consisting of |
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# $pathname - the URI up to and excluding the trailing / |
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# $filename - The part of the URI following the last / |
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# NOTE: |
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# Another realization of this is simply: |
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# use File::Basename; |
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# ... |
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# $uri = shift; |
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# $filename = basename($uri); |
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# $path = dirname($uri); |
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# return ($filename, $path); |
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# |
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# The implementation below is probably faster however. |
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# |
sub split_uri_for_cond { |
sub split_uri_for_cond { |
my $uri=&deversion(&declutter(shift)); |
my $uri=&deversion(&declutter(shift)); |
my @uriparts=split(/\//,$uri); |
my @uriparts=split(/\//,$uri); |
Line 6857 sub assignrole {
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Line 7095 sub assignrole {
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return 'refused'; |
return 'refused'; |
} |
} |
} |
} |
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} elsif ($role eq 'au') { |
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if ($url ne '/'.$udom.'/') { |
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&logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}. |
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' to assign author role for '.$uname.':'.$udom. |
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' in domain: '.$url.' refused (wrong domain).'); |
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return 'refused'; |
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} |
} |
} |
$mrole=$role; |
$mrole=$role; |
} |
} |
Line 8004 sub dirlist {
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Line 8249 sub dirlist {
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if($udom) { |
if($udom) { |
if($uname) { |
if($uname) { |
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my $uhome = &homeserver($uname,$udom); |
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if ($uhome eq 'no_host') { |
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return ([],'no_host'); |
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} |
$listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':' |
$listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':' |
.$getuserdir.':'.&escape($dirRoot) |
.$getuserdir.':'.&escape($dirRoot) |
.':'.&escape($uname).':'.&escape($udom), |
.':'.&escape($uname).':'.&escape($udom),$uhome); |
&homeserver($uname,$udom)); |
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if ($listing eq 'unknown_cmd') { |
if ($listing eq 'unknown_cmd') { |
$listing = &reply('ls2:'.$dirRoot.'/'.$uri, |
$listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome); |
&homeserver($uname,$udom)); |
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} else { |
} else { |
@listing_results = map { &unescape($_); } split(/:/,$listing); |
@listing_results = map { &unescape($_); } split(/:/,$listing); |
} |
} |
if ($listing eq 'unknown_cmd') { |
if ($listing eq 'unknown_cmd') { |
$listing = &reply('ls:'.$dirRoot.'/'.$uri, |
$listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome); |
&homeserver($uname,$udom)); |
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@listing_results = split(/:/,$listing); |
@listing_results = split(/:/,$listing); |
} else { |
} else { |
@listing_results = map { &unescape($_); } split(/:/,$listing); |
@listing_results = map { &unescape($_); } split(/:/,$listing); |
} |
} |
return @listing_results; |
if (($listing eq 'no_such_host') || ($listing eq 'con_lost') || |
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($listing eq 'rejected') || ($listing eq 'refused') || |
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($listing eq 'no_such_dir') || ($listing eq 'empty')) { |
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return ([],$listing); |
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} else { |
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return (\@listing_results); |
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} |
} elsif(!$alternateRoot) { |
} elsif(!$alternateRoot) { |
my %allusers; |
my (%allusers,%listerror); |
my %servers = &get_servers($udom,'library'); |
my %servers = &get_servers($udom,'library'); |
foreach my $tryserver (keys(%servers)) { |
foreach my $tryserver (keys(%servers)) { |
$listing = &reply('ls3:'.&escape("/res/$udom").':::::'. |
$listing = &reply('ls3:'.&escape("/res/$udom").':::::'. |
Line 8042 sub dirlist {
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Line 8294 sub dirlist {
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@listing_results = |
@listing_results = |
map { &unescape($_); } split(/:/,$listing); |
map { &unescape($_); } split(/:/,$listing); |
} |
} |
if ($listing_results[0] ne 'no_such_dir' && |
if (($listing eq 'no_such_host') || ($listing eq 'con_lost') || |
$listing_results[0] ne 'empty' && |
($listing eq 'rejected') || ($listing eq 'refused') || |
$listing_results[0] ne 'con_lost') { |
($listing eq 'no_such_dir') || ($listing eq 'empty')) { |
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$listerror{$tryserver} = $listing; |
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} else { |
foreach my $line (@listing_results) { |
foreach my $line (@listing_results) { |
my ($entry) = split(/&/,$line,2); |
my ($entry) = split(/&/,$line,2); |
$allusers{$entry} = 1; |
$allusers{$entry} = 1; |
} |
} |
} |
} |
} |
} |
my $alluserstr=''; |
my @alluserslist=(); |
foreach my $user (sort(keys(%allusers))) { |
foreach my $user (sort(keys(%allusers))) { |
$alluserstr.=$user.'&user:'; |
push(@alluserslist,$user.'&user'); |
} |
} |
$alluserstr=~s/:$//; |
return (\@alluserslist); |
return split(/:/,$alluserstr); |
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} else { |
} else { |
return ('missing user name'); |
return ([],'missing username'); |
} |
} |
} elsif(!defined($getpropath)) { |
} elsif(!defined($getpropath)) { |
my @all_domains = sort(&all_domains()); |
my $path = $perlvar{'lonDocRoot'}.'/res/'; |
foreach my $domain (@all_domains) { |
my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains())); |
$domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain'; |
return (\@all_domains); |
} |
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return @all_domains; |
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} else { |
} else { |
return ('missing domain'); |
return ([],'missing domain'); |
} |
} |
} |
} |
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Line 8080 sub GetFileTimestamp {
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Line 8331 sub GetFileTimestamp {
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my ($studentDomain,$studentName,$filename,$getuserdir)=@_; |
my ($studentDomain,$studentName,$filename,$getuserdir)=@_; |
$studentDomain = &LONCAPA::clean_domain($studentDomain); |
$studentDomain = &LONCAPA::clean_domain($studentDomain); |
$studentName = &LONCAPA::clean_username($studentName); |
$studentName = &LONCAPA::clean_username($studentName); |
my ($fileStat) = |
my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName, |
&Apache::lonnet::dirlist($filename,$studentDomain,$studentName, |
undef,$getuserdir); |
undef,$getuserdir); |
if (($error eq 'empty') || ($error eq 'no_such_dir')) { |
my @stats = split('&', $fileStat); |
return -1; |
if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') { |
} |
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if (ref($fileref) eq 'ARRAY') { |
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my @stats = split('&',$fileref->[0]); |
# @stats contains first the filename, then the stat output |
# @stats contains first the filename, then the stat output |
return $stats[10]; # so this is 10 instead of 9. |
return $stats[10]; # so this is 10 instead of 9. |
} else { |
} else { |
Line 8116 sub stat_file {
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Line 8369 sub stat_file {
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if ($file =~ /^userfiles\//) { |
if ($file =~ /^userfiles\//) { |
$getpropath = 1; |
$getpropath = 1; |
} |
} |
my ($result) = &dirlist($file,$udom,$uname,$getpropath); |
my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath); |
my @stats = split('&', $result); |
if (($error eq 'empty') || ($error eq 'no_such_dir')) { |
|
return (); |
if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') { |
} else { |
shift(@stats); #filename is first |
if (ref($listref) eq 'ARRAY') { |
return @stats; |
my @stats = split('&',$listref->[0]); |
|
shift(@stats); #filename is first |
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return @stats; |
|
} |
} |
} |
return (); |
return (); |
} |
} |
Line 9468 sub getCODE {
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Line 9724 sub getCODE {
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} |
} |
return undef; |
return undef; |
} |
} |
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# |
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# Determines the random seed for a specific context: |
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# |
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# parameters: |
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# symb - in course context the symb for the seed. |
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# course_id - The course id of the form domain_coursenum. |
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# domain - Domain for the user. |
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# course - Course for the user. |
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# cenv - environment of the course. |
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# |
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# NOTE: |
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# All parameters are picked out of the environment if missing |
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# or not defined. |
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# If a symb cannot be determined the current time is used instead. |
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# |
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# For a given well defined symb, courside, domain, username, |
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# and course environment, the seed is reproducible. |
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# |
sub rndseed { |
sub rndseed { |
my ($symb,$courseid,$domain,$username)=@_; |
my ($symb,$courseid,$domain,$username, $cenv)=@_; |
my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser(); |
my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser(); |
if (!defined($symb)) { |
if (!defined($symb)) { |
unless ($symb=$wsymb) { return time; } |
unless ($symb=$wsymb) { return time; } |
Line 9478 sub rndseed {
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Line 9751 sub rndseed {
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if (!$courseid) { $courseid=$wcourseid; } |
if (!$courseid) { $courseid=$wcourseid; } |
if (!$domain) { $domain=$wdomain; } |
if (!$domain) { $domain=$wdomain; } |
if (!$username) { $username=$wusername } |
if (!$username) { $username=$wusername } |
my $which=&get_rand_alg(); |
|
|
my $which; |
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if (defined($cenv->{'rndseed'})) { |
|
$which = $cenv->{'rndseed'}; |
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} else { |
|
$which =&get_rand_alg($courseid); |
|
} |
|
|
if (defined(&getCODE())) { |
if (defined(&getCODE())) { |
|
|
if ($which eq '64bit5') { |
if ($which eq '64bit5') { |
return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username); |
return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username); |
} elsif ($which eq '64bit4') { |
} elsif ($which eq '64bit4') { |
Line 10188 sub get_dns {
|
Line 10468 sub get_dns {
|
while (%alldns) { |
while (%alldns) { |
my ($dns) = keys(%alldns); |
my ($dns) = keys(%alldns); |
my $ua=new LWP::UserAgent; |
my $ua=new LWP::UserAgent; |
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$ua->timeout(30); |
my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url"); |
my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url"); |
my $response=$ua->request($request); |
my $response=$ua->request($request); |
delete($alldns{$dns}); |
delete($alldns{$dns}); |
Line 11555 or lonTabs/domain.tab.
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Line 11836 or lonTabs/domain.tab.
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=item * |
=item * |
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dirlist($uri) : return directory list based on URI |
dirlist() : return directory list based on URI (first arg). |
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Inputs: 1 required, 5 optional. |
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=over |
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=item |
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$uri - path to file in filesystem (starts: /res or /userfiles/). Required. |
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=item |
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$userdomain - domain of user/course to be listed. Extracted from $uri if absent. |
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=item |
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$username - username of user/course to be listed. Extracted from $uri if absent. |
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=item |
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$getpropath - boolean: 1 if prepend path using &propath(). |
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=item |
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$getuserdir - boolean: 1 if prepend path for "userfiles". |
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=item |
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$alternateRoot - path to prepend in place of path from $uri. |
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=back |
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Returns: Array of up to two items. |
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=over |
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a reference to an array of files/subdirectories |
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=over |
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Each element in the array of files/subdirectories is a & separated list of |
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item name and the result of running stat on the item. If dirlist was requested |
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for a file instead of a directory, the item name will be ''. For a directory |
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listing, if the item is a metadata file, the element will end &N&M |
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(where N amd M are either 0 or 1, corresponding to obsolete set (1), or |
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default copyright set (1). |
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=back |
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a scalar containing error condition (if encountered). |
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=over |
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=item |
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no_host (no homeserver identified for $username:$domain). |
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=item |
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no_such_host (server contacted for listing not identified as valid host). |
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=item |
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con_lost (connection to remote server failed). |
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=item |
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refused (invalid $username:$domain received on lond side). |
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=item |
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no_such_dir (directory at specified path on lond side does not exist). |
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=item |
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empty (directory at specified path on lond side is empty). |
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=over |
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This is currently not encountered because the &ls3, &ls2, |
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&ls (_handler) routines on the lond side do not filter out |
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. and .. from a directory listing. |
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=back |
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=back |
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=back |
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=item * |
=item * |
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