--- loncom/lond 2009/09/13 03:13:21 1.426 +++ loncom/lond 2011/08/05 04:35:45 1.480 @@ -2,7 +2,7 @@ # The LearningOnline Network # lond "LON Daemon" Server (port "LOND" 5663) # -# $Id: lond,v 1.426 2009/09/13 03:13:21 raeburn Exp $ +# $Id: lond,v 1.480 2011/08/05 04:35:45 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -15,6 +15,7 @@ # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of + # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # @@ -42,7 +43,6 @@ use Crypt::IDEA; use LWP::UserAgent(); use Digest::MD5 qw(md5_hex); use GDBM_File; -use Authen::Krb4; use Authen::Krb5; use localauth; use localenroll; @@ -53,13 +53,14 @@ use LONCAPA::lonlocal; use LONCAPA::lonssl; use Fcntl qw(:flock); use Apache::lonnet; +use Mail::Send; my $DEBUG = 0; # Non zero to enable debug log entries. my $status=''; my $lastlog=''; -my $VERSION='$Revision: 1.426 $'; #' stupid emacs +my $VERSION='$Revision: 1.480 $'; #' stupid emacs my $remoteVERSION; my $currenthostid="default"; my $currentdomainid; @@ -67,6 +68,9 @@ my $currentdomainid; my $client; my $clientip; # IP address of client. my $clientname; # LonCAPA name of client. +my $clientversion; # LonCAPA version running on client. +my $clienthomedom; # LonCAPA domain of homeID for client. + # primary library server. my $server; @@ -88,6 +92,8 @@ my %managers; # Ip -> manager names my %perlvar; # Will have the apache conf defined perl vars. +my $dist; + # # The hash below is used for command dispatching, and is therefore keyed on the request keyword. # Each element of the hash contains a reference to an array that contains: @@ -417,8 +423,11 @@ sub ReadManagerTable { my $tablename = $perlvar{'lonTabDir'}."/managers.tab"; if (!open (MANAGERS, $tablename)) { - logthis('No manager table. Nobody can manage!!'); - return; + my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'}); + if (&Apache::lonnet::is_LC_dns($hostname)) { + &logthis('No manager table. Nobody can manage!!'); + } + return; } while(my $host = ) { chomp($host); @@ -443,7 +452,7 @@ sub ReadManagerTable { } } else { logthis(' existing host'." $host\n"); - $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber + $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber } } } @@ -505,7 +514,8 @@ sub AdjustHostContents { my $me = $perlvar{'lonHostID'}; foreach my $line (split(/\n/,$contents)) { - if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) { + if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) || + ($line =~ /^\s*\^/))) { chomp($line); my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line); if ($id eq $me) { @@ -593,11 +603,8 @@ sub InstallFile { # # ConfigFileFromSelector: converts a configuration file selector # into a configuration file pathname. -# It's probably no longer necessary to preserve -# special handling of hosts or domain as those -# files have been superceded by dns_hosts, dns_domain. -# The default action is just to prepend the directory -# and append .tab +# Supports the following file selectors: +# hosts, domain, dns_hosts, dns_domain # # # Parameters: @@ -610,15 +617,11 @@ sub ConfigFileFromSelector { my $tablefile; my $tabledir = $perlvar{'lonTabDir'}.'/'; - if ($selector eq "hosts") { - $tablefile = $tabledir."hosts.tab"; - } elsif ($selector eq "domain") { - $tablefile = $tabledir."domain.tab"; - } else { + if (($selector eq "hosts") || ($selector eq "domain") || + ($selector eq "dns_hosts") || ($selector eq "dns_domain")) { $tablefile = $tabledir.$selector.'.tab'; } return $tablefile; - } # # PushFile: Called to do an administrative push of a file. @@ -644,6 +647,8 @@ sub PushFile { # supported: # hosts.tab ($filename eq host). # domain.tab ($filename eq domain). + # dns_hosts.tab ($filename eq dns_host). + # dns_domain.tab ($filename eq dns_domain). # Construct the destination filename or reject the request. # # lonManage is supposed to ensure this, however this session could be @@ -675,11 +680,31 @@ sub PushFile { return "error:$!"; } else { &logthis(' Installed new '.$tablefile - .""); - + ." - transaction by: $clientname ($clientip)"); + my $adminmail = $perlvar{'lonAdmEMail'}; + my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'}); + if ($admindom ne '') { + my %domconfig = + &Apache::lonnet::get_dom('configuration',['contacts'],$admindom); + if (ref($domconfig{'contacts'}) eq 'HASH') { + if ($domconfig{'contacts'}{'adminemail'} ne '') { + $adminmail = $domconfig{'contacts'}{'adminemail'}; + } + } + } + if ($adminmail =~ /^[^\@]+\@[^\@]+$/) { + my $msg = new Mail::Send; + $msg->to($adminmail); + $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'}); + $msg->add('Content-type','text/plain; charset=UTF-8'); + if (my $fh = $msg->open()) { + print $fh 'Update to '.$tablefile.' from Cluster Manager '. + "$clientname ($clientip)\n"; + $fh->close; + } + } } - # Indicate success: return "ok"; @@ -975,6 +1000,9 @@ sub read_profile { &GDBM_READER()); if ($hashref) { my @queries=split(/\&/,$what); + if ($namespace eq 'roles') { + @queries = map { &unescape($_); } @queries; + } my $qresult=''; for (my $i=0;$i<=$#queries;$i++) { @@ -1068,7 +1096,7 @@ sub pong_handler { # Implicit Inputs: # $currenthostid - Global variable that carries the name of the host # known as. -# $clientname - Global variable that carries the name of the hsot we're connected to. +# $clientname - Global variable that carries the name of the host we're connected to. # Returns: # 1 - Ok to continue processing. # 0 - Program should exit. @@ -1107,7 +1135,7 @@ sub establish_key_handler { # Implicit Inputs: # $currenthostid - Global variable that carries the name of the host # known as. -# $clientname - Global variable that carries the name of the hsot we're connected to. +# $clientname - Global variable that carries the name of the host we're connected to. # Returns: # 1 - Ok to continue processing. # 0 - Program should exit. @@ -1116,6 +1144,8 @@ sub establish_key_handler { sub load_handler { my ($cmd, $tail, $replyfd) = @_; + + # Get the load average from /proc/loadavg and calculate it as a percentage of # the allowed load limit as set by the perl global variable lonLoadLim @@ -1144,7 +1174,7 @@ sub load_handler { # Implicit Inputs: # $currenthostid - Global variable that carries the name of the host # known as. -# $clientname - Global variable that carries the name of the hsot we're connected to. +# $clientname - Global variable that carries the name of the host we're connected to. # Returns: # 1 - Ok to continue processing. # 0 - Program should exit @@ -1613,6 +1643,74 @@ sub ls3_handler { } ®ister_handler("ls3", \&ls3_handler, 0, 1, 0); +sub read_lonnet_global { + my ($cmd,$tail,$client) = @_; + my $userinput = "$cmd:$tail"; + my $requested = &Apache::lonnet::thaw_unescape($tail); + my $result; + my %packagevars = ( + spareid => \%Apache::lonnet::spareid, + perlvar => \%Apache::lonnet::perlvar, + ); + my %limit_to = ( + perlvar => { + lonOtherAuthen => 1, + lonBalancer => 1, + lonVersion => 1, + lonSysEMail => 1, + lonHostID => 1, + lonRole => 1, + lonDefDomain => 1, + lonLoadLim => 1, + lonUserLoadLim => 1, + } + ); + if (ref($requested) eq 'HASH') { + foreach my $what (keys(%{$requested})) { + my $response; + my $items = {}; + if (exists($packagevars{$what})) { + if (ref($limit_to{$what}) eq 'HASH') { + foreach my $varname (keys(%{$packagevars{$what}})) { + if ($limit_to{$what}{$varname}) { + $items->{$varname} = $packagevars{$what}{$varname}; + } + } + } else { + $items = $packagevars{$what}; + } + if ($what eq 'perlvar') { + if (!exists($packagevars{$what}{'lonBalancer'})) { + if ($dist =~ /^(centos|rhes|fedora|scientific)/) { + my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf'); + if (ref($othervarref) eq 'HASH') { + $items->{'lonBalancer'} = $othervarref->{'lonBalancer'}; + } + } + } + } + $response = &Apache::lonnet::freeze_escape($items); + } + $result .= &escape($what).'='.$response.'&'; + } + } + $result =~ s/\&$//; + &Reply($client,\$result,$userinput); + return 1; +} +®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0); + +sub server_devalidatecache_handler { + my ($cmd,$tail,$client) = @_; + my $userinput = "$cmd:$tail"; + my ($name,$id) = map { &unescape($_); } split(/:/,$tail); + &Apache::lonnet::devalidate_cache_new($name,$id); + my $result = 'ok'; + &Reply($client,\$result,$userinput); + return 1; +} +®ister_handler("devalidatecache", \&devalidatecache_handler, 0, 1, 0); + sub server_timezone_handler { my ($cmd,$tail,$client) = @_; my $userinput = "$cmd:$tail"; @@ -1653,6 +1751,23 @@ sub server_loncaparev_handler { } ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0); +sub server_homeID_handler { + my ($cmd,$tail,$client) = @_; + my $userinput = "$cmd:$tail"; + &Reply($client,\$perlvar{'lonHostID'},$userinput); + return 1; +} +®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0); + +sub server_distarch_handler { + my ($cmd,$tail,$client) = @_; + my $userinput = "$cmd:$tail"; + my $reply = &distro_and_arch(); + &Reply($client,\$reply,$userinput); + return 1; +} +®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0); + # Process a reinit request. Reinit requests that either # lonc or lond be reinitialized so that an updated # host.tab or domain.tab can be processed. @@ -1762,15 +1877,49 @@ sub authenticate_handler { # upass - User's password. # checkdefauth - Pass to validate_user() to try authentication # with default auth type(s) if no user account. + # clientcancheckhost - Passed by clients with functionality in lonauth.pm + # to check if session can be hosted. - my ($udom, $uname, $upass, $checkdefauth)=split(/:/,$tail); + my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail); &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth"); chomp($upass); $upass=&unescape($upass); my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth); if($pwdcorrect) { - &Reply( $client, "authorized\n", $userinput); + my $canhost = 1; + unless ($clientcancheckhost) { + my $uprimary_id = &Apache::lonnet::domain($udom,'primary'); + my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id); + my @intdoms; + my $internet_names = &Apache::lonnet::get_internet_names($clientname); + if (ref($internet_names) eq 'ARRAY') { + @intdoms = @{$internet_names}; + } + unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) { + my ($remote,$hosted); + my $remotesession = &get_usersession_config($udom,'remotesession'); + if (ref($remotesession) eq 'HASH') { + $remote = $remotesession->{'remote'} + } + my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession'); + if (ref($hostedsession) eq 'HASH') { + $hosted = $hostedsession->{'hosted'}; + } + my $loncaparev = $clientversion; + if ($loncaparev eq '') { + $loncaparev = $Apache::lonnet::loncaparevs{$clientname}; + } + $canhost = &Apache::lonnet::can_host_session($udom,$clientname, + $loncaparev, + $remote,$hosted); + } + } + if ($canhost) { + &Reply( $client, "authorized\n", $userinput); + } else { + &Reply( $client, "not_allowed_to_host\n", $userinput); + } # # Bad credentials: Failed to authorize # @@ -1815,8 +1964,9 @@ sub change_password_handler { # npass - New password. # context - Context in which this was called # (preferences or reset_by_email). + # lonhost - HostID of server where request originated - my ($udom,$uname,$upass,$npass,$context)=split(/:/,$tail); + my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail); $upass=&unescape($upass); $npass=&unescape($npass); @@ -1825,9 +1975,13 @@ sub change_password_handler { # First require that the user can be authenticated with their # old password unless context was 'reset_by_email': - my $validated; + my ($validated,$failure); if ($context eq 'reset_by_email') { - $validated = 1; + if ($lonhost eq '') { + $failure = 'invalid_client'; + } else { + $validated = 1; + } } else { $validated = &validate_user($udom, $uname, $upass); } @@ -1841,8 +1995,11 @@ sub change_password_handler { $salt=substr($salt,6,2); my $ncpass=crypt($npass,$salt); if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) { - &logthis("Result of password change for " - ."$uname: pwchange_success"); + my $msg="Result of password change for $uname: pwchange_success"; + if ($lonhost) { + $msg .= " - request originated from: $lonhost"; + } + &logthis($msg); &Reply($client, "ok\n", $userinput); } else { &logthis("Unable to open $uname passwd " @@ -1863,7 +2020,10 @@ sub change_password_handler { } } else { - &Failure( $client, "non_authorized\n", $userinput); + if ($failure eq '') { + $failure = 'non_authorized'; + } + &Failure( $client, "$failure\n", $userinput); } return 1; @@ -2050,16 +2210,10 @@ sub is_home_handler { ®ister_handler("home", \&is_home_handler, 0,1,0); # -# Process an update request for a resource?? I think what's going on here is -# that a resource has been modified that we hold a subscription to. +# Process an update request for a resource. +# A resource has been modified that we hold a subscription to. # If the resource is not local, then we must update, or at least invalidate our # cached copy of the resource. -# FUTURE WORK: -# I need to look at this logic carefully. My druthers would be to follow -# typical caching logic, and simple invalidate the cache, drop any subscription -# an let the next fetch start the ball rolling again... however that may -# actually be more difficult than it looks given the complex web of -# proxy servers. # Parameters: # $cmd - The command that got us here. # $tail - Tail of the command (remaining parameters). @@ -2083,20 +2237,30 @@ sub update_resource_handler { my $ownership=ishome($fname); if ($ownership eq 'not_owner') { if (-e $fname) { + # Delete preview file, if exists + unlink("$fname.tmp"); + # Get usage stats my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size, $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname); my $now=time; my $since=$now-$atime; + # If the file has not been used within lonExpire seconds, + # unsubscribe from it and delete local copy if ($since>$perlvar{'lonExpire'}) { my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname"); &devalidate_meta_cache($fname); unlink("$fname"); unlink("$fname.meta"); } else { + # Yes, this is in active use. Get a fresh copy. Since it might be in + # very active use and huge (like a movie), copy it to "in.transfer" filename first. my $transname="$fname.in.transfer"; my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname"); my $response; - alarm(120); +# FIXME: cannot replicate files that take more than two minutes to transfer? +# alarm(120); +# FIXME: this should use the LWP mechanism, not internal alarms. + alarm(1200); { my $ua=new LWP::UserAgent; my $request=new HTTP::Request('GET',"$remoteurl"); @@ -2104,11 +2268,13 @@ sub update_resource_handler { } alarm(0); if ($response->is_error()) { +# FIXME: we should probably clean up here instead of just whine unlink($transname); my $message=$response->status_line; &logthis("LWP GET: $message for $fname ($remoteurl)"); } else { if ($remoteurl!~/\.meta$/) { +# FIXME: isn't there an internal LWP mechanism for this? alarm(120); { my $ua=new LWP::UserAgent; @@ -2120,6 +2286,7 @@ sub update_resource_handler { } alarm(0); } + # we successfully transfered, copy file over to real name rename($transname,$fname); &devalidate_meta_cache($fname); } @@ -2181,7 +2348,9 @@ sub fetch_user_file_handler { my $destname=$udir.'/'.$ufile; my $transname=$udir.'/'.$ufile.'.in.transit'; - my $remoteurl='http://'.$clientip.'/userfiles/'.$fname; + my $clientprotocol=$Apache::lonnet::protocol{$clientname}; + $clientprotocol = 'http' if ($clientprotocol ne 'https'); + my $remoteurl=$clientprotocol.'://'.$clientip.'/userfiles/'.$fname; my $response; Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname"); alarm(120); @@ -2357,7 +2526,6 @@ sub user_has_session_handler { my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail)); - &logthis("Looking for $udom $uname"); opendir(DIR,$perlvar{'lonIDsDir'}); my $filename; while ($filename=readdir(DIR)) { @@ -3088,7 +3256,7 @@ sub dump_with_regexp { my $userinput = "$cmd:$tail"; - my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail); + my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail); if (defined($regexp)) { $regexp=&unescape($regexp); } else { @@ -3106,10 +3274,41 @@ sub dump_with_regexp { } my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER()); + my $skipcheck; if ($hashref) { my $qresult=''; my $count=0; + if ($extra ne '') { + $extra = &Apache::lonnet::thaw_unescape($extra); + $skipcheck = $extra->{'skipcheck'}; + } + my @ids = &Apache::lonnet::current_machine_ids(); + my (%homecourses,$major,$minor,$now); + if (($namespace eq 'roles') && (!$skipcheck)) { + my $loncaparev = $clientversion; + if ($loncaparev eq '') { + $loncaparev = $Apache::lonnet::loncaparevs{$clientname}; + } + if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) { + $major = $1; + $minor = $2; + } + $now = time; + } while (my ($key,$value) = each(%$hashref)) { + if ($namespace eq 'roles') { + if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) { + my $cdom = $1; + my $cnum = $2; + unless ($skipcheck) { + my ($role,$end,$start) = split(/\_/,$value); + if (!$end || $end > $now) { + next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major, + $minor,\%homecourses,\@ids)); + } + } + } + } if ($regexp eq '.') { $count++; if (defined($range) && $count >= $end) { last; } @@ -3126,6 +3325,12 @@ sub dump_with_regexp { } } if (&untie_user_hash($hashref)) { + if (($namespace eq 'roles') && (!$skipcheck)) { + if (keys(%homecourses) > 0) { + $qresult .= &check_homecourses(\%homecourses,$udom,$regexp,$count, + $range,$start,$end,$major,$minor); + } + } chop($qresult); &Reply($client, \$qresult, $userinput); } else { @@ -3693,12 +3898,18 @@ sub put_course_id_hash_handler { # caller - if set to 'coursecatalog', courses set to be hidden # from course catalog will be excluded from results (unless # overridden by "showhidden". -# cloner - escaped username:domain of course cloner (if picking course to# +# cloner - escaped username:domain of course cloner (if picking course to # clone). # cc_clone_list - escaped comma separated list of courses for which # course cloner has active CC role (and so can clone # automatically). -# cloneonly - filter by courses for which cloner has rights to clone. +# cloneonly - filter by courses for which cloner has rights to clone. +# createdbefore - include courses for which creation date preceeded this date. +# createdafter - include courses for which creation date followed this date. +# creationcontext - include courses created in specified context +# +# domcloner - flag to indicate if user can create CCs in course's domain. +# If so, ability to clone course is automatic. # # $client - The socket open on the client. # Returns: @@ -3711,7 +3922,8 @@ sub dump_course_id_handler { my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter, $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden, - $caller,$cloner,$cc_clone_list,$cloneonly) =split(/:/,$tail); + $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter, + $creationcontext,$domcloner) =split(/:/,$tail); my $now = time; my ($cloneruname,$clonerudom,%cc_clone); if (defined($description)) { @@ -3769,7 +3981,21 @@ sub dump_course_id_handler { $cc_clone{$clonedom.'_'.$clonenum} = 1; } } - + if ($createdbefore ne '') { + $createdbefore = &unescape($createdbefore); + } else { + $createdbefore = 0; + } + if ($createdafter ne '') { + $createdafter = &unescape($createdafter); + } else { + $createdafter = 0; + } + if ($creationcontext ne '') { + $creationcontext = &unescape($creationcontext); + } else { + $creationcontext = '.'; + } my $unpack = 1; if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' && $typefilter eq '.') { @@ -3781,7 +4007,8 @@ sub dump_course_id_handler { if ($hashref) { while (my ($key,$value) = each(%$hashref)) { my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val, - %unesc_val,$selfenroll_end,$selfenroll_types); + %unesc_val,$selfenroll_end,$selfenroll_types,$created, + $context); $unesc_key = &unescape($key); if ($unesc_key =~ /^lasttime:/) { next; @@ -3795,8 +4022,13 @@ sub dump_course_id_handler { my ($canclone,$valchange); my $items = &Apache::lonnet::thaw_unescape($value); if (ref($items) eq 'HASH') { + if ($hashref->{$lasttime_key} eq '') { + next if ($since > 1); + } $is_hash = 1; - if (defined($clonerudom)) { + if ($domcloner) { + $canclone = 1; + } elsif (defined($clonerudom)) { if ($items->{'cloners'}) { my @cloneable = split(',',$items->{'cloners'}); if (@cloneable) { @@ -3824,6 +4056,19 @@ sub dump_course_id_handler { $items->{'cloners'} = $cloneruname.':'.$clonerudom; $valchange = 1; } + unless ($canclone) { + if ($items->{'owner'} =~ /:/) { + if ($items->{'owner'} eq $cloner) { + $canclone = 1; + } + } elsif ($cloner eq $items->{'owner'}.':'.$udom) { + $canclone = 1; + } + if ($canclone) { + $items->{'cloners'} = $cloneruname.':'.$clonerudom; + $valchange = 1; + } + } } } if ($unpack || !$rtn_as_hash) { @@ -3832,15 +4077,28 @@ sub dump_course_id_handler { $unesc_val{'owner'} = $items->{'owner'}; $unesc_val{'type'} = $items->{'type'}; $unesc_val{'cloners'} = $items->{'cloners'}; + $unesc_val{'created'} = $items->{'created'}; + $unesc_val{'context'} = $items->{'context'}; } $selfenroll_types = $items->{'selfenroll_types'}; $selfenroll_end = $items->{'selfenroll_end_date'}; + $created = $items->{'created'}; + $context = $items->{'context'}; if ($selfenrollonly) { next if (!$selfenroll_types); if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) { next; } } + if ($creationcontext ne '.') { + next if (($context ne '') && ($context ne $creationcontext)); + } + if ($createdbefore > 0) { + next if (($created eq '') || ($created > $createdbefore)); + } + if ($createdafter > 0) { + next if (($created eq '') || ($created <= $createdafter)); + } if ($catfilter ne '') { next if ($items->{'categories'} eq ''); my @categories = split('&',$items->{'categories'}); @@ -3863,6 +4121,8 @@ sub dump_course_id_handler { } else { next if ($catfilter ne ''); next if ($selfenrollonly); + next if ($createdbefore || $createdafter); + next if ($creationcontext ne '.'); if ((defined($clonerudom)) && (defined($cloneruname))) { if ($cc_clone{$unesc_key}) { $canclone = 1; @@ -4009,6 +4269,53 @@ sub dump_course_id_handler { } ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0); +sub course_lastaccess_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my ($cdom,$cnum) = split(':',$tail); + my (%lastaccess,$qresult); + my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT()); + if ($hashref) { + while (my ($key,$value) = each(%$hashref)) { + my ($unesc_key,$lasttime); + $unesc_key = &unescape($key); + if ($cnum) { + next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/); + } + if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) { + $lastaccess{$1} = $value; + } else { + my $items = &Apache::lonnet::thaw_unescape($value); + if (ref($items) eq 'HASH') { + unless ($lastaccess{$unesc_key}) { + $lastaccess{$unesc_key} = ''; + } + } else { + my @courseitems = split(':',$value); + $lastaccess{$unesc_key} = pop(@courseitems); + } + } + } + foreach my $cid (sort(keys(%lastaccess))) { + $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&'; + } + if (&untie_domain_hash($hashref)) { + if ($qresult) { + chop($qresult); + } + &Reply($client, \$qresult, $userinput); + } else { + &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". + "while attempting lastacourseaccess\n", $userinput); + } + } else { + &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". + "while attempting lastcourseaccess\n", $userinput); + } + return 1; +} +®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0); + # # Puts an unencrypted entry in a namespace db file at the domain level # @@ -4074,6 +4381,7 @@ sub put_domain_handler { sub get_domain_handler { my ($cmd, $tail, $client) = @_; + my $userinput = "$client:$tail"; my ($udom,$namespace,$what)=split(/:/,$tail,3); @@ -4218,7 +4526,8 @@ sub get_id_handler { sub put_dcmail_handler { my ($cmd,$tail,$client) = @_; my $userinput = "$cmd:$tail"; - + + my ($udom,$what)=split(/:/,$tail); chomp($what); my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT()); @@ -4482,7 +4791,7 @@ sub tmp_put_handler { } my ($id,$store); $tmpsnum++; - if ($context eq 'resetpw') { + if (($context eq 'resetpw') || ($context eq 'createaccount')) { $id = &md5_hex(&md5_hex(time.{}.rand().$$)); } else { $id = $$.'_'.$clientip.'_'.$tmpsnum; @@ -4800,10 +5109,11 @@ sub get_sections_handler { sub validate_course_owner_handler { my ($cmd, $tail, $client) = @_; my $userinput = "$cmd:$tail"; - my ($inst_course_id, $owner, $cdom) = split(/:/, $tail); - + my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail); + $owner = &unescape($owner); - my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom); + $coowners = &unescape($coowners); + my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners); &Reply($client, \$outcome, $userinput); @@ -5791,7 +6101,7 @@ if (-e $pidfile) { $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'}, Type => SOCK_STREAM, Proto => 'tcp', - Reuse => 1, + ReuseAddr => 1, Listen => 10 ) or die "making socket: $@\n"; @@ -5854,9 +6164,13 @@ sub HUPSMAN { # sig # a setuid perl script that can be root for us to do this job. # sub ReloadApache { - my $execdir = $perlvar{'lonDaemons'}; - my $script = $execdir."/apachereload"; - system($script); +# --------------------------- Handle case of another apachereload process (locking) + if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) { + my $execdir = $perlvar{'lonDaemons'}; + my $script = $execdir."/apachereload"; + system($script); + unlink('/tmp/lock_apachereload'); # Remove the lock file. + } } # @@ -6029,7 +6343,7 @@ sub logstatus { sub initnewstatus { my $docdir=$perlvar{'lonDocRoot'}; my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt"); - my $now=time; + my $now=time(); my $local=localtime($now); print $fh "LOND status $local - parent $$\n\n"; opendir(DIR,"$docdir/lon-status/londchld"); @@ -6118,8 +6432,16 @@ $SIG{USR2} = \&UpdateHosts; # Read the host hashes: &Apache::lonnet::load_hosts_tab(); +my %iphost = &Apache::lonnet::get_iphost(1); -my $dist=`$perlvar{'lonDaemons'}/distprobe`; +$dist=`$perlvar{'lonDaemons'}/distprobe`; + +my $arch = `uname -i`; +chomp($arch); +if ($arch eq 'unknown') { + $arch = `uname -m`; + chomp($arch); +} # -------------------------------------------------------------- # Accept connections. When a connection comes in, it is validated @@ -6178,6 +6500,7 @@ sub make_new_child { or die "Can't unblock SIGINT for fork: $!\n"; $children{$pid} = $clientip; &status('Started child '.$pid); + close($client); return; } else { # Child can *not* return from this subroutine. @@ -6186,6 +6509,13 @@ sub make_new_child { #don't get intercepted $SIG{USR1}= \&logstatus; $SIG{ALRM}= \&timeout; + # + # Block sigpipe as it gets thrownon socket disconnect and we want to + # deal with that as a read faiure instead. + # + my $blockset = POSIX::SigSet->new(SIGPIPE); + sigprocmask(SIG_BLOCK, $blockset); + $lastlog='Forked '; $status='Forked'; @@ -6214,7 +6544,7 @@ sub make_new_child { &ReadManagerTable(); my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip)); my $ismanager=($managers{$outsideip} ne undef); - $clientname = "[unknonwn]"; + $clientname = "[unknown]"; if($clientrec) { # Establish client type. $ConnectionType = "client"; $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1]; @@ -6242,7 +6572,7 @@ sub make_new_child { # # If the remote is attempting a local init... give that a try: # - my ($i, $inittype) = split(/:/, $remotereq); + (my $i, my $inittype, $clientversion) = split(/:/, $remotereq); # If the connection type is ssl, but I didn't get my # certificate files yet, then I'll drop back to @@ -6262,6 +6592,7 @@ sub make_new_child { } if($inittype eq "local") { + $clientversion = $perlvar{'lonVersion'}; my $key = LocalConnection($client, $remotereq); if($key) { Debug("Got local key $key"); @@ -6269,7 +6600,7 @@ sub make_new_child { my $cipherkey = pack("H32", $key); $cipher = new IDEA($cipherkey); print $client "ok:local\n"; - &logthis('' . "Successful local authentication "); $keymode = "local" } else { @@ -6333,6 +6664,9 @@ sub make_new_child { # ------------------------------------------------------------ Process requests my $keep_going = 1; my $user_input; + my $clienthost = &Apache::lonnet::hostname($clientname); + my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost); + $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID); while(($user_input = get_request) && $keep_going) { alarm(120); Debug("Main: Got $user_input\n"); @@ -6491,9 +6825,7 @@ sub rewrite_password_file { # Returns the authorization type or nouser if there is no such user. # -sub get_auth_type -{ - +sub get_auth_type { my ($domain, $user) = @_; Debug("get_auth_type( $domain, $user ) \n"); @@ -6588,54 +6920,24 @@ sub validate_user { } else { $validated = 0; } - } - elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain. - if(! ($password =~ /$null/) ) { - my $k4error = &Authen::Krb4::get_pw_in_tkt($user, - "", - $contentpwd,, - 'krbtgt', - $contentpwd, - 1, - $password); - if(!$k4error) { - $validated = 1; - } else { - $validated = 0; - &logthis('krb4: '.$user.', '.$contentpwd.', '. - &Authen::Krb4::get_err_txt($Authen::Krb4::error)); - } - } else { - $validated = 0; # Password has a match with null. - } + } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain. + my $checkwithkrb5 = 0; + if ($dist =~/^fedora(\d+)$/) { + if ($1 > 11) { + $checkwithkrb5 = 1; + } + } elsif ($dist =~ /^suse([\d.]+)$/) { + if ($1 > 11.1) { + $checkwithkrb5 = 1; + } + } + if ($checkwithkrb5) { + $validated = &krb5_authen($password,$null,$user,$contentpwd); + } else { + $validated = &krb4_authen($password,$null,$user,$contentpwd); + } } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain. - if(!($password =~ /$null/)) { # Null password not allowed. - my $krbclient = &Authen::Krb5::parse_name($user.'@' - .$contentpwd); - my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd; - my $krbserver = &Authen::Krb5::parse_name($krbservice); - my $credentials= &Authen::Krb5::cc_default(); - $credentials->initialize(&Authen::Krb5::parse_name($user.'@' - .$contentpwd)); - my $krbreturn; - if (exists(&Authen::Krb5::get_init_creds_password)) { - $krbreturn = - &Authen::Krb5::get_init_creds_password($krbclient,$password, - $krbservice); - $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds'); - } else { - $krbreturn = - &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver, - $password,$credentials); - $validated = ($krbreturn == 1); - } - if (!$validated) { - &logthis('krb5: '.$user.', '.$contentpwd.', '. - &Authen::Krb5::error()); - } - } else { - $validated = 0; - } + $validated = &krb5_authen($password,$null,$user,$contentpwd); } elsif ($howpwd eq "localauth") { # Authenticate via installation specific authentcation method: $validated = &localauth::localauth($user, @@ -6666,6 +6968,65 @@ sub validate_user { return $validated; } +sub krb4_authen { + my ($password,$null,$user,$contentpwd) = @_; + my $validated = 0; + if (!($password =~ /$null/) ) { # Null password not allowed. + eval { + require Authen::Krb4; + }; + if (!$@) { + my $k4error = &Authen::Krb4::get_pw_in_tkt($user, + "", + $contentpwd,, + 'krbtgt', + $contentpwd, + 1, + $password); + if(!$k4error) { + $validated = 1; + } else { + $validated = 0; + &logthis('krb4: '.$user.', '.$contentpwd.', '. + &Authen::Krb4::get_err_txt($Authen::Krb4::error)); + } + } else { + $validated = krb5_authen($password,$null,$user,$contentpwd); + } + } + return $validated; +} + +sub krb5_authen { + my ($password,$null,$user,$contentpwd) = @_; + my $validated = 0; + if(!($password =~ /$null/)) { # Null password not allowed. + my $krbclient = &Authen::Krb5::parse_name($user.'@' + .$contentpwd); + my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd; + my $krbserver = &Authen::Krb5::parse_name($krbservice); + my $credentials= &Authen::Krb5::cc_default(); + $credentials->initialize(&Authen::Krb5::parse_name($user.'@' + .$contentpwd)); + my $krbreturn; + if (exists(&Authen::Krb5::get_init_creds_password)) { + $krbreturn = + &Authen::Krb5::get_init_creds_password($krbclient,$password, + $krbservice); + $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds'); + } else { + $krbreturn = + &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver, + $password,$credentials); + $validated = ($krbreturn == 1); + } + if (!$validated) { + &logthis('krb5: '.$user.', '.$contentpwd.', '. + &Authen::Krb5::error()); + } + } + return $validated; +} sub addline { my ($fname,$hostid,$ip,$newline)=@_; @@ -6878,7 +7239,9 @@ sub subscribe { # the metadata unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); } $fname=~s/\/home\/httpd\/html\/res/raw/; - $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname; + my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}}; + $protocol = 'http' if ($protocol ne 'https'); + $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname; $result="$fname\n"; } } else { @@ -7036,7 +7399,7 @@ sub sethost { eq &Apache::lonnet::get_host_ip($hostid)) { $currenthostid =$hostid; $currentdomainid=&Apache::lonnet::host_domain($hostid); - &logthis("Setting hostid to $hostid, and domain to $currentdomainid"); +# &logthis("Setting hostid to $hostid, and domain to $currentdomainid"); } else { &logthis("Requested host id $hostid not an alias of ". $perlvar{'lonHostID'}." refusing connection"); @@ -7051,6 +7414,186 @@ sub version { return "version:$VERSION"; } +sub get_usersession_config { + my ($dom,$name) = @_; + my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom); + if (defined($cached)) { + return $usersessionconf; + } else { + my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom); + if (ref($domconfig{'usersessions'}) eq 'HASH') { + &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600); + return $domconfig{'usersessions'}; + } + } + return; +} + +sub releasereqd_check { + my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_; + my $home = &Apache::lonnet::homeserver($cnum,$cdom); + return if ($home eq 'no_host'); + my ($reqdmajor,$reqdminor,$displayrole); + if ($cnum =~ /$LONCAPA::match_community/) { + if ($major eq '' && $minor eq '') { + return unless ((ref($ids) eq 'ARRAY') && + (grep(/^\Q$home\E$/,@{$ids}))); + } else { + $reqdmajor = 2; + $reqdminor = 9; + return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor)); + } + } + my $hashid = $cdom.':'.$cnum; + my ($courseinfo,$cached) = + &Apache::lonnet::is_cached_new('courseinfo',$hashid); + if (defined($cached)) { + if (ref($courseinfo) eq 'HASH') { + if (exists($courseinfo->{'releaserequired'})) { + my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'}); + return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor)); + } + } + } else { + if (ref($ids) eq 'ARRAY') { + if (grep(/^\Q$home\E$/,@{$ids})) { + if (ref($homecourses) eq 'HASH') { + if (ref($homecourses->{$hashid}) eq 'ARRAY') { + push(@{$homecourses->{$hashid}},{$key=>$value}); + } else { + $homecourses->{$hashid} = [{$key=>$value}]; + } + } + return; + } + } + my $courseinfo = &get_courseinfo_hash($cnum,$cdom,$home); + if (ref($courseinfo) eq 'HASH') { + if (exists($courseinfo->{'releaserequired'})) { + my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'}); + return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor)); + } + } else { + return; + } + } + return 1; +} + +sub get_courseinfo_hash { + my ($cnum,$cdom,$home) = @_; + my %info; + eval { + local($SIG{ALRM}) = sub { die "timeout\n"; }; + local($SIG{__DIE__})='DEFAULT'; + alarm(3); + %info = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,1,[$home],'.'); + alarm(0); + }; + if ($@) { + if ($@ eq "timeout\n") { + &logthis("WARNING courseiddump for $cnum:$cdom from $home timedout"); + } else { + &logthis("WARNING unexpected error during eval of call for courseiddump from $home"); + } + } else { + if (ref($info{$cdom.'_'.$cnum}) eq 'HASH') { + my $hashid = $cdom.':'.$cnum; + return &Apache::lonnet::do_cache_new('courseinfo',$hashid,$info{$cdom.'_'.$cnum},600); + } + } + return; +} + +sub check_homecourses { + my ($homecourses,$udom,$regexp,$count,$range,$start,$end,$major,$minor) = @_; + my ($result,%addtocache); + my $yesterday = time - 24*3600; + if (ref($homecourses) eq 'HASH') { + my (%okcourses,%courseinfo,%recent); + my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); + if ($hashref) { + while (my ($key,$value) = each(%$hashref)) { + my $unesc_key = &unescape($key); + if ($unesc_key =~ /^lasttime:(\w+)$/) { + my $cid = $1; + $cid =~ s/_/:/; + if ($value > $yesterday ) { + $recent{$cid} = 1; + } + next; + } + my $items = &Apache::lonnet::thaw_unescape($value); + if (ref($items) eq 'HASH') { + my $hashid = $unesc_key; + $hashid =~ s/_/:/; + $courseinfo{$hashid} = $items; + if (ref($homecourses->{$hashid}) eq 'ARRAY') { + my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'}); + if (&useable_role($reqdmajor,$reqdminor,$major,$minor)) { + $okcourses{$hashid} = 1; + } + } + } + } + unless (&untie_domain_hash($hashref)) { + &logthis('Failed to untie tied hash for nohist_courseids.db'); + } + } else { + &logthis('Failed to tie hash for nohist_courseids.db'); + return; + } + foreach my $hashid (keys(%recent)) { + my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid); + unless ($cached) { + &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600); + } + } + foreach my $hashid (keys(%{$homecourses})) { + next if ($recent{$hashid}); + &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600); + } + foreach my $hashid (keys(%okcourses)) { + if (ref($homecourses->{$hashid}) eq 'ARRAY') { + foreach my $role (@{$homecourses->{$hashid}}) { + if (ref($role) eq 'HASH') { + while (my ($key,$value) = each(%{$role})) { + if ($regexp eq '.') { + $count++; + if (defined($range) && $count >= $end) { last; } + if (defined($range) && $count < $start) { next; } + $result.=$key.'='.$value.'&'; + } else { + my $unescapeKey = &unescape($key); + if (eval('$unescapeKey=~/$regexp/')) { + $count++; + if (defined($range) && $count >= $end) { last; } + if (defined($range) && $count < $start) { next; } + $result.="$key=$value&"; + } + } + } + } + } + } + } + } + return $result; +} + +sub useable_role { + my ($reqdmajor,$reqdminor,$major,$minor) = @_; + if ($reqdmajor ne '' && $reqdminor ne '') { + return if (($major eq '' && $minor eq '') || + ($major < $reqdmajor) || + (($major == $reqdmajor) && ($minor < $reqdminor))); + } + return 1; +} + +sub distro_and_arch { + return $dist.':'.$arch; +} # ----------------------------------- POD (plain old documentation, CPAN style) @@ -7786,5 +8329,7 @@ string. =back +=back + =cut 500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.