--- loncom/lond 2008/06/26 23:51:59 1.405 +++ loncom/lond 2012/10/06 14:44:50 1.489.2.2 @@ -2,7 +2,7 @@ # The LearningOnline Network # lond "LON Daemon" Server (port "LOND" 5663) # -# $Id: lond,v 1.405 2008/06/26 23:51:59 raeburn Exp $ +# $Id: lond,v 1.489.2.2 2012/10/06 14:44:50 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: 1.405 $'; #' stupid emacs +my $VERSION='$Revision: 1.489.2.2 $'; #' 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: @@ -142,6 +148,16 @@ my @adderrors = ("ok", "lcuseradd Password mismatch"); +# This array are the errors from lcinstallfile: + +my @installerrors = ("ok", + "Initial user id of client not that of www", + "Usage error, not enough command line arguments", + "Source file name does not exist", + "Destination file name does not exist", + "Some file operation failed", + "Invalid table filename." + ); # # Statistics that are maintained and dislayed in the status line. @@ -398,6 +414,7 @@ sub isClient { # sub ReadManagerTable { + &Debug("Reading manager table"); # Clean out the old table first.. foreach my $key (keys %managers) { @@ -406,8 +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); @@ -432,7 +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 } } } @@ -494,7 +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) { @@ -520,11 +541,9 @@ sub AdjustHostContents { } # # InstallFile: Called to install an administrative file: -# - The file is created with .tmp -# - The .tmp file is then mv'd to -# This lugubrious procedure is done to ensure that we are never without -# a valid, even if dated, version of the file regardless of who crashes -# and when the crash occurs. +# - The file is created int a temp directory called .tmp +# - lcinstall file is called to install the file. +# since the web app has no direct write access to the table directory # # Parameters: # Name of the file @@ -532,11 +551,16 @@ sub AdjustHostContents { # Return: # nonzero - success. # 0 - failure and $! has an errno. +# Assumptions: +# File installtion is a relatively infrequent # sub InstallFile { my ($Filename, $Contents) = @_; - my $TempFile = $Filename.".tmp"; +# my $TempFile = $Filename.".tmp"; + my $exedir = $perlvar{'lonDaemons'}; + my $tmpdir = $exedir.'/tmp/'; + my $TempFile = $tmpdir."TempTableFile.tmp"; # Open the file for write: @@ -550,11 +574,27 @@ sub InstallFile { print $fh ($Contents); $fh->close; # In case we ever have a filesystem w. locking - chmod(0660, $TempFile); + chmod(0664, $TempFile); # Everyone can write it. - # Now we can move install the file in position. - - move($TempFile, $Filename); + # Use lcinstall file to put the file in the table directory... + + &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename"); + my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log"); + close $pf; + my $err = $?; + &Debug("Status is $err"); + if ($err != 0) { + my $msg = $err; + if ($err < @installerrors) { + $msg = $installerrors[$err]; + } + &logthis("Install failed for table file $Filename : $msg"); + return 0; + } + + # Remove the temp file: + + unlink($TempFile); return 1; } @@ -562,8 +602,10 @@ sub InstallFile { # # ConfigFileFromSelector: converts a configuration file selector -# (one of host or domain at this point) into a -# configuration file pathname. +# into a configuration file pathname. +# Supports the following file selectors: +# hosts, domain, dns_hosts, dns_domain +# # # Parameters: # selector - Configuration file selector. @@ -575,15 +617,11 @@ sub ConfigFileFromSelector { my $tablefile; my $tabledir = $perlvar{'lonTabDir'}.'/'; - if ($selector eq "hosts") { - $tablefile = $tabledir."hosts.tab"; - } elsif ($selector eq "domain") { - $tablefile = $tabledir."domain.tab"; - } else { - return undef; + if (($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. @@ -603,11 +641,14 @@ sub ConfigFileFromSelector { sub PushFile { my $request = shift; my ($command, $filename, $contents) = split(":", $request, 3); + &Debug("PushFile"); # At this point in time, pushes for only the following tables are # supported: # hosts.tab ($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 @@ -619,20 +660,7 @@ sub PushFile { if(! (defined $tablefile)) { return "refused"; } - # - # >copy< the old table to the backup table - # don't rename in case system crashes/reboots etc. in the time - # window between a rename and write. - # - my $backupfile = $tablefile; - $backupfile =~ s/\.tab$/.old/; - if(!CopyFile($tablefile, $backupfile)) { - &logthis(' CopyFile from '.$tablefile." to ".$backupfile." failed "); - return "error:$!"; - } - &logthis(' Pushfile: backed up ' - .$tablefile." to $backupfile"); - + # If the file being pushed is the host file, we adjust the entry for ourself so that the # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible # to conceive of conditions where we don't have a DNS entry locally. This is possible in a @@ -645,17 +673,38 @@ sub PushFile { # Install the new file: + &logthis("Installing new $tablefile contents:\n$contents"); if(!InstallFile($tablefile, $contents)) { &logthis(' Pushfile: unable to install ' .$tablefile." $! "); return "error:$!"; } 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"; + $fh->close; + } + } } - # Indicate success: return "ok"; @@ -951,6 +1000,9 @@ sub read_profile { &GDBM_READER()); if ($hashref) { my @queries=split(/\&/,$what); + if ($namespace eq 'roles') { + @queries = map { &unescape($_); } @queries; + } my $qresult=''; for (my $i=0;$i<=$#queries;$i++) { @@ -1044,7 +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. @@ -1083,7 +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. +# $clientname - Global variable that carries the name of the host we're connected to. # Returns: # 1 - Ok to continue processing. # 0 - Program should exit. @@ -1092,6 +1144,8 @@ sub establish_key_handler { sub load_handler { my ($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 @@ -1120,7 +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. +# $clientname - Global variable that carries the name of the host we're connected to. # Returns: # 1 - Ok to continue processing. # 0 - Program should exit @@ -1198,7 +1252,7 @@ sub user_authorization_type { # a reply is written to the client. sub push_file_handler { my ($cmd, $tail, $client) = @_; - + &Debug("In push file handler"); my $userinput = "$cmd:$tail"; # At this time we only know that the IP of our partner is a valid manager @@ -1206,7 +1260,8 @@ sub push_file_handler { # spoofing). my $cert = &GetCertificate($userinput); - if(&ValidManager($cert)) { + if(&ValidManager($cert)) { + &Debug("Valid manager: $client"); # Now presumably we have the bona fides of both the peer host and the # process making the request. @@ -1215,6 +1270,7 @@ sub push_file_handler { &Reply($client, \$reply, $userinput); } else { + &logthis("push_file_handler $client is not valid"); &Failure( $client, "refused\n", $userinput); } return 1; @@ -1538,7 +1594,7 @@ sub ls3_handler { } elsif ($alternate_root ne '') { $dir_root = $alternate_root; } - if ($dir_root ne '') { + if (($dir_root ne '') && ($dir_root ne '/')) { if ($ulsdir =~ /^\//) { $ulsdir = $dir_root.$ulsdir; } else { @@ -1587,6 +1643,131 @@ 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,$userinput); + return 1; +} +®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0); + +sub server_timezone_handler { + my ($cmd,$tail,$client) = @_; + my $userinput = "$cmd:$tail"; + my $timezone; + my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE + my $tzfile = '/etc/timezone'; # Debian/Ubuntu + if (-e $clockfile) { + if (open(my $fh,"<$clockfile")) { + while (<$fh>) { + next if (/^[\#\s]/); + if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) { + $timezone = $1; + last; + } + } + close($fh); + } + } elsif (-e $tzfile) { + if (open(my $fh,"<$tzfile")) { + $timezone = <$fh>; + close($fh); + chomp($timezone); + if ($timezone =~ m{^Etc/(\w+)$}) { + $timezone = $1; + } + } + } + &Reply($client,\$timezone,$userinput); # This supports debug logging. + return 1; +} +®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0); + +sub server_loncaparev_handler { + my ($cmd,$tail,$client) = @_; + my $userinput = "$cmd:$tail"; + &Reply($client,\$perlvar{'lonVersion'},$userinput); + return 1; +} +®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0); + +sub server_homeID_handler { + my ($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,$userinput); + return 1; +} +®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0); + # Process a reinit request. Reinit requests that either # lonc or lond be reinitialized so that an updated # host.tab or domain.tab can be processed. @@ -1696,15 +1877,49 @@ sub authenticate_handler { # upass - User's password. # checkdefauth - Pass to validate_user() to try authentication # with default auth type(s) if no user account. + # clientcancheckhost - Passed by clients with functionality in lonauth.pm + # to check if session can be hosted. - my ($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", $userinput); + } # # Bad credentials: Failed to authorize # @@ -1749,8 +1964,9 @@ sub change_password_handler { # npass - New password. # context - Context in which this was called # (preferences or reset_by_email). + # lonhost - HostID of server where request originated - my ($udom,$uname,$upass,$npass,$context)=split(/:/,$tail); + my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail); $upass=&unescape($upass); $npass=&unescape($npass); @@ -1759,9 +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); } @@ -1775,8 +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 " @@ -1797,7 +2020,10 @@ sub change_password_handler { } } else { - &Failure( $client, "non_authorized\n", $userinput); + if ($failure eq '') { + $failure = 'non_authorized'; + } + &Failure( $client, "$failure\n", $userinput); } return 1; @@ -1847,7 +2073,7 @@ sub add_user_handler { ."makeuser"; } unless ($fperror) { - my $result=&make_passwd_file($uname, $umode,$npass, $passfilename); + my $result=&make_passwd_file($uname,$udom,$umode,$npass, $passfilename); &Reply($client,\$result, $userinput); #BUGBUG - could be fail } else { &Failure($client, \$fperror, $userinput); @@ -1922,7 +2148,7 @@ sub change_authentication_handler { &Failure($client, \$result); } } else { - my $result=&make_passwd_file($uname, $umode,$npass,$passfilename); + my $result=&make_passwd_file($uname,$udom,$umode,$npass,$passfilename); # # If the current auth mode is internal, and the old auth mode was # unix, or krb*, and the user is an author for this domain, @@ -1984,16 +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). @@ -2017,20 +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"); @@ -2038,11 +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 $ua=new LWP::UserAgent; @@ -2054,6 +2286,7 @@ sub update_resource_handler { } alarm(0); } + # we successfully transfered, copy file over to real name rename($transname,$fname); &devalidate_meta_cache($fname); } @@ -2115,7 +2348,10 @@ 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 $clienthost = &Apache::lonnet::hostname($clientname); + my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname; my $response; Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname"); alarm(120); @@ -2137,6 +2373,24 @@ sub fetch_user_file_handler { unlink($transname); &Failure($client, "failed\n", $userinput); } else { + if ($fname =~ /^default.+\.(page|sequence)$/) { + my ($major,$minor) = split(/\./,$clientversion); + if (($major < 2) || ($major == 2 && $minor < 11)) { + my $now = time; + &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600); + my $key = &escape('internal.contentchange'); + my $what = "$key=$now"; + my $hashref = &tie_user_hash($udom,$uname,'environment', + &GDBM_WRCREAT(),"P",$what); + if ($hashref) { + $hashref->{$key}=$now; + if (!&untie_user_hash($hashref)) { + &logthis("error: ".($!+0)." untie (GDBM) failed ". + "when updating internal.contentchange"); + } + } + } + } &Reply($client, "ok\n", $userinput); } } @@ -2291,7 +2545,6 @@ sub user_has_session_handler { my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail)); - &logthis("Looking for $udom $uname"); opendir(DIR,$perlvar{'lonIDsDir'}); my $filename; while ($filename=readdir(DIR)) { @@ -3010,6 +3263,9 @@ sub dump_profile_database { # that is matched against # database keywords to do # selective dumps. +# range - optional range of entries +# e.g., 10-20 would return the +# 10th to 19th items, etc. # $client - Channel open on the client. # Returns: # 1 - Continue processing. @@ -3043,7 +3299,59 @@ sub dump_with_regexp { if ($hashref) { my $qresult=''; my $count=0; +# +# When dump is for roles.db, determine if LON-CAPA version checking is needed. +# Sessions on 2.10 and later do not require version checking, as that occurs +# on the server hosting the user session, when constructing the roles/courses +# screen). +# + my $skipcheck; + my @ids = &Apache::lonnet::current_machine_ids(); + my (%homecourses,$major,$minor,$now); +# +# If dump is for roles.db from a pre-2.10 server, determine the LON-CAPA +# version on the server which requested the data. For LON-CAPA 2.9, the +# client session will have sent its LON-CAPA version when initiating the +# connection. For LON-CAPA 2.8 and older, the version is retrieved from +# the global %loncaparevs in lonnet.pm. +# +# + if ($namespace eq 'roles') { + my $loncaparev = $clientversion; + if ($loncaparev eq '') { + $loncaparev = $Apache::lonnet::loncaparevs{$clientname}; + } + if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) { + $major = $1; + $minor = $2; + } + if (($major > 2) || (($major == 2) && ($minor > 9))) { + $skipcheck = 1; + } + $now = time; + } while (my ($key,$value) = each(%$hashref)) { + if (($namespace eq 'roles') && (!$skipcheck)) { + if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) { + my $cdom = $1; + my $cnum = $2; + my ($role,$roleend,$rolestart) = split(/\_/,$value); + if (!$roleend || $roleend > $now) { +# +# For active course roles, check that requesting server is running a LON-CAPA +# version which meets any version requirements for the course. Do not include +# the role amongst the results returned if the requesting server's version is +# too old. +# +# This determination is handled differently depending on whether the course's +# homeserver is the current server, or whether it is a different server. +# In both cases, the course's version requirement needs to be retrieved. +# + next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major, + $minor,\%homecourses,\@ids)); + } + } + } if ($regexp eq '.') { $count++; if (defined($range) && $count >= $end) { last; } @@ -3060,6 +3368,19 @@ sub dump_with_regexp { } } if (&untie_user_hash($hashref)) { +# +# If dump is for roles.db from a pre-2.10 server, check if the LON-CAPA +# version requirements for courses for which the current server is the home +# server permit course roles to be usable on the client server hosting the +# user's session. If so, include those role results in the data returned to +# the client server. +# + if (($namespace eq 'roles') && (!$skipcheck)) { + if (keys(%homecourses) > 0) { + $qresult .= &check_homecourses(\%homecourses,$regexp,$count, + $range,$start,$end,$major,$minor); + } + } chop($qresult); &Reply($client, \$qresult, $userinput); } else { @@ -3608,8 +3929,10 @@ sub put_course_id_hash_handler { # will be returned. Pre-2.2.0 legacy entries from # nohist_courseiddump will only contain usernames. # type - optional parameter for selection -# regexp_ok - if true, allow the supplied institutional code -# filter to behave as a regular expression. +# regexp_ok - if 1 or -1 allow the supplied institutional code +# filter to behave as a regular expression: +# 1 will not exclude the course if the instcode matches the RE +# -1 will exclude the course if the instcode matches the RE # rtn_as_hash - whether to return the information available for # each matched item as a frozen hash of all # key, value pairs in the item's hash, or as a @@ -3619,12 +3942,24 @@ sub put_course_id_hash_handler { # now or in the future (selfenrollonly = 1). # catfilter - filter by course category, assigned to a course # using manually defined categories (i.e., not -# self-cataloging based on onstitutional code). +# self-cataloging based on on institutional code). # showhidden - include course in results even if course -# was set to be excluded from course catalog (DC only). +# was set to be excluded from course catalog (DC only). # 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 +# 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. +# 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. # # $client - The socket open on the client. # Returns: @@ -3637,8 +3972,10 @@ sub dump_course_id_handler { my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter, $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden, - $caller) =split(/:/,$tail); + $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter, + $creationcontext,$domcloner) =split(/:/,$tail); my $now = time; + my ($cloneruname,$clonerudom,%cc_clone); if (defined($description)) { $description=&unescape($description); } else { @@ -3681,8 +4018,36 @@ sub dump_course_id_handler { if (defined($catfilter)) { $catfilter=&unescape($catfilter); } + if (defined($cloner)) { + $cloner = &unescape($cloner); + ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/); + } + if (defined($cc_clone_list)) { + $cc_clone_list = &unescape($cc_clone_list); + my @cc_cloners = split('&',$cc_clone_list); + foreach my $cid (@cc_cloners) { + my ($clonedom,$clonenum) = split(':',$cid); + next if ($clonedom ne $udom); + $cc_clone{$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 '.' && $coursefilter eq '.' && + if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' && $typefilter eq '.') { $unpack = 0; } @@ -3692,7 +4057,8 @@ sub dump_course_id_handler { if ($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; @@ -3703,25 +4069,99 @@ sub dump_course_id_handler { $lasttime = $hashref->{$lasttime_key}; next if ($lasttime<$since); } + my ($canclone,$valchange); my $items = &Apache::lonnet::thaw_unescape($value); if (ref($items) eq 'HASH') { + if ($hashref->{$lasttime_key} eq '') { + next if ($since > 1); + } $is_hash = 1; + if ($domcloner) { + $canclone = 1; + } elsif (defined($clonerudom)) { + if ($items->{'cloners'}) { + my @cloneable = split(',',$items->{'cloners'}); + if (@cloneable) { + if (grep(/^\*$/,@cloneable)) { + $canclone = 1; + } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) { + $canclone = 1; + } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) { + $canclone = 1; + } + } + unless ($canclone) { + if ($cloneruname ne '' && $clonerudom ne '') { + if ($cc_clone{$unesc_key}) { + $canclone = 1; + $items->{'cloners'} .= ','.$cloneruname.':'. + $clonerudom; + $valchange = 1; + } + } + } + } elsif (defined($cloneruname)) { + if ($cc_clone{$unesc_key}) { + $canclone = 1; + $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) { $unesc_val{'descr'} = $items->{'description'}; $unesc_val{'inst_code'} = $items->{'inst_code'}; $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->{'category'} ne $catfilter); + next if ($items->{'categories'} eq ''); + my @categories = split('&',$items->{'categories'}); + next if (@categories == 0); + my @subcats = split('&',$catfilter); + my $matchcat = 0; + foreach my $cat (@categories) { + if (grep(/^\Q$cat\E$/,@subcats)) { + $matchcat = 1; + last; + } + } + next if (!$matchcat); } if ($caller eq 'coursecatalog') { if ($items->{'hidefromcat'} eq 'yes') { @@ -3730,7 +4170,15 @@ sub dump_course_id_handler { } } else { next if ($catfilter ne ''); - next if ($selfenrollonly); + next if ($selfenrollonly); + next if ($createdbefore || $createdafter); + next if ($creationcontext ne '.'); + if ((defined($clonerudom)) && (defined($cloneruname))) { + if ($cc_clone{$unesc_key}) { + $canclone = 1; + $val{'cloners'} = &escape($cloneruname.':'.$clonerudom); + } + } $is_hash = 0; my @courseitems = split(/:/,$value); $lasttime = pop(@courseitems); @@ -3739,6 +4187,9 @@ sub dump_course_id_handler { } ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems; } + if ($cloneonly) { + next unless ($canclone); + } my $match = 1; if ($description ne '.') { if (!$is_hash) { @@ -3752,10 +4203,14 @@ sub dump_course_id_handler { if (!$is_hash) { $unesc_val{'inst_code'} = &unescape($val{'inst_code'}); } - if ($regexp_ok) { + if ($regexp_ok == 1) { if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) { $match = 0; } + } elsif ($regexp_ok == -1) { + if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) { + $match = 0; + } } else { if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) { $match = 0; @@ -3821,12 +4276,18 @@ sub dump_course_id_handler { if ($match == 1) { if ($rtn_as_hash) { if ($is_hash) { - $qresult.=$key.'='.$value.'&'; + if ($valchange) { + my $newvalue = &Apache::lonnet::freeze_escape($items); + $qresult.=$key.'='.$newvalue.'&'; + } else { + $qresult.=$key.'='.$value.'&'; + } } else { my %rtnhash = ( 'description' => &unescape($val{'descr'}), 'inst_code' => &unescape($val{'inst_code'}), 'owner' => &unescape($val{'owner'}), 'type' => &unescape($val{'type'}), + 'cloners' => &unescape($val{'cloners'}), ); my $items = &Apache::lonnet::freeze_escape(\%rtnhash); $qresult.=$key.'='.$items.'&'; @@ -3858,6 +4319,53 @@ sub dump_course_id_handler { } ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0); +sub course_lastaccess_handler { + my ($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", $userinput); + } + return 1; +} +®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0); + # # Puts an unencrypted entry in a namespace db file at the domain level # @@ -3923,6 +4431,7 @@ sub put_domain_handler { sub get_domain_handler { my ($cmd, $tail, $client) = @_; + my $userinput = "$client:$tail"; my ($udom,$namespace,$what)=split(/:/,$tail,3); @@ -3950,7 +4459,6 @@ sub get_domain_handler { } ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0); - # # Puts an id to a domains id database. # @@ -4068,7 +4576,8 @@ sub get_id_handler { sub put_dcmail_handler { my ($cmd,$tail,$client) = @_; my $userinput = "$cmd:$tail"; - + + my ($udom,$what)=split(/:/,$tail); chomp($what); my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT()); @@ -4257,27 +4766,30 @@ sub dump_domainroles_handler { $rolesfilter=&unescape($rolesfilter); @roles = split(/\&/,$rolesfilter); } - + my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT()); if ($hashref) { my $qresult = ''; while (my ($key,$value) = each(%$hashref)) { my $match = 1; - my ($start,$end) = split(/:/,&unescape($value)); + my ($end,$start) = split(/:/,&unescape($value)); my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key)); - unless ($startfilter eq '.' || !defined($startfilter)) { - if ($start >= $startfilter) { + unless (@roles < 1) { + unless (grep/^\Q$trole\E$/,@roles) { $match = 0; + next; } } - unless ($endfilter eq '.' || !defined($endfilter)) { - if ($end <= $endfilter) { + unless ($startfilter eq '.' || !defined($startfilter)) { + if ((defined($start)) && ($start >= $startfilter)) { $match = 0; + next; } } - unless (@roles < 1) { - unless (grep/^\Q$trole\E$/,@roles) { + unless ($endfilter eq '.' || !defined($endfilter)) { + if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) { $match = 0; + next; } } if ($match == 1) { @@ -4329,7 +4841,7 @@ 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; @@ -4564,6 +5076,43 @@ sub enrollment_enabled_handler { } ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0); +# +# Validate an institutional code used for a LON-CAPA course. +# +# Formal Parameters: +# $cmd - The command request that got us dispatched. +# $tail - The tail of the command. In this case, +# this is a colon separated set of words that will be split +# into: +# $dom - The domain for which the check of +# institutional course code will occur. +# +# $instcode - The institutional code for the course +# being requested, or validated for rights +# to request. +# +# $owner - The course requestor (who will be the +# course owner, in the form username:domain +# +# $client - Socket open on the client. +# Returns: +# 1 - Indicating processing should continue. +# +sub validate_instcode_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my ($dom,$instcode,$owner) = split(/:/, $tail); + $instcode = &unescape($instcode); + $owner = &unescape($owner); + my ($outcome,$description) = + &localenroll::validate_instcode($dom,$instcode,$owner); + my $result = &escape($outcome).'&'.&escape($description); + &Reply($client, \$result, $userinput); + + return 1; +} +®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0); + # Get the official sections for which auto-enrollment is possible. # Since the admin people won't know about 'unofficial sections' # we cannot auto-enroll on them. @@ -4610,10 +5159,11 @@ sub get_sections_handler { sub validate_course_owner_handler { my ($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, $userinput); @@ -4767,6 +5317,61 @@ sub retrieve_auto_file_handler { } ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0); +sub crsreq_checks_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my $dom = $tail; + my $result; + my @reqtypes = ('official','unofficial','community'); + eval { + local($SIG{__DIE__})='DEFAULT'; + my %validations; + my $response = &localenroll::crsreq_checks($dom,\@reqtypes, + \%validations); + if ($response eq 'ok') { + foreach my $key (keys(%validations)) { + $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&'; + } + $result =~ s/\&$//; + } else { + $result = 'error'; + } + }; + if (!$@) { + &Reply($client, \$result, $userinput); + } else { + &Failure($client,"unknown_cmd\n",$userinput); + } + return 1; +} +®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0); + +sub validate_crsreq_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail); + $instcode = &unescape($instcode); + $owner = &unescape($owner); + $crstype = &unescape($crstype); + $inststatuslist = &unescape($inststatuslist); + $instcode = &unescape($instcode); + $instseclist = &unescape($instseclist); + my $outcome; + eval { + local($SIG{__DIE__})='DEFAULT'; + $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype, + $inststatuslist,$instcode, + $instseclist); + }; + if (!$@) { + &Reply($client, \$outcome, $userinput); + } else { + &Failure($client,"unknown_cmd\n",$userinput); + } + return 1; +} +®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0); + # # Read and retrieve institutional code format (for support form). # Formal Parameters: @@ -4851,6 +5456,39 @@ sub get_institutional_defaults_handler { ®ister_handler("autoinstcodedefaults", \&get_institutional_defaults_handler,0,1,0); +sub get_possible_instcodes_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + + my $reply; + my $cdom = $tail; + my (@codetitles,%cat_titles,%cat_order,@code_order); + my $formatreply = &localenroll::possible_instcodes($cdom, + \@codetitles, + \%cat_titles, + \%cat_order, + \@code_order); + if ($formatreply eq 'ok') { + my $result = join('&',map {&escape($_);} (@codetitles)).':'; + $result .= join('&',map {&escape($_);} (@code_order)).':'; + foreach my $key (keys(%cat_titles)) { + $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&'; + } + $result =~ s/\&$//; + $result .= ':'; + foreach my $key (keys(%cat_order)) { + $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&'; + } + $result =~ s/\&$//; + &Reply($client,\$result,$userinput); + } else { + &Reply($client, "format_error\n", $userinput); + } + return 1; +} +®ister_handler("autopossibleinstcodes", + \&get_possible_instcodes_handler,0,1,0); + sub get_institutional_user_rules { my ($cmd, $tail, $client) = @_; my $userinput = "$cmd:$tail"; @@ -5513,7 +6151,7 @@ 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"; @@ -5576,9 +6214,13 @@ 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. + } } # @@ -5751,7 +6393,7 @@ 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"); @@ -5840,8 +6482,16 @@ $SIG{USR2} = \&UpdateHosts; # Read the host hashes: &Apache::lonnet::load_hosts_tab(); +my %iphost = &Apache::lonnet::get_iphost(1); + +$dist=`$perlvar{'lonDaemons'}/distprobe`; -my $dist=`$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 @@ -5900,6 +6550,7 @@ 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. @@ -5908,6 +6559,13 @@ 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 '; $status='Forked'; @@ -5919,7 +6577,8 @@ sub make_new_child { #---------------------------------------------------- kerberos 5 initialization &Authen::Krb5::init_context(); unless (($dist eq 'fedora5') || ($dist eq 'fedora4') || - ($dist eq 'fedora6') || ($dist eq 'suse9.3')) { + ($dist eq 'fedora6') || ($dist eq 'suse9.3') || + ($dist eq 'suse12.2')) { &Authen::Krb5::init_ets(); } @@ -5933,10 +6592,10 @@ sub make_new_child { if ($clientip eq '127.0.0.1') { $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'}); } - + &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]; @@ -5964,7 +6623,7 @@ 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(/:/, $remotereq); # If the connection type is ssl, but I didn't get my # certificate files yet, then I'll drop back to @@ -5984,6 +6643,7 @@ sub make_new_child { } if($inittype eq "local") { + $clientversion = $perlvar{'lonVersion'}; my $key = LocalConnection($client, $remotereq); if($key) { Debug("Got local key $key"); @@ -5991,7 +6651,7 @@ 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 { @@ -6055,6 +6715,9 @@ 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"); @@ -6104,22 +6767,29 @@ sub is_author { # Author role should show up as a key /domain/_au - my $key = "/$domain/_au"; my $value; - if (defined($hashref)) { - $value = $hashref->{$key}; - } + if ($hashref) { - if(defined($value)) { - &Debug("$user @ $domain is an author"); + my $key = "/$domain/_au"; + if (defined($hashref)) { + $value = $hashref->{$key}; + if(!untie_user_hash($hashref)) { + return 'error: ' . ($!+0)." untie (GDBM) Failed"; + } + } + + if(defined($value)) { + &Debug("$user @ $domain is an author"); + } + } else { + return 'error: '.($!+0)." tie (GDBM) Failed"; } return defined($value); } # # Checks to see if the input roleput request was to set -# an author role. If so, invokes the lchtmldir script to set -# up a correct public_html +# an author role. If so, creates construction space # Parameters: # request - The request sent to the rolesput subchunk. # We're looking for /domain/_au @@ -6129,16 +6799,15 @@ sub is_author { # sub manage_permissions { my ($request, $domain, $user, $authtype) = @_; - - &Debug("manage_permissions: $request $domain $user $authtype"); - # See if the request is of the form /$domain/_au if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput... - my $execdir = $perlvar{'lonDaemons'}; - my $userhome= "/home/$user" ; - &logthis("system $execdir/lchtmldir $userhome $user $authtype"); - &Debug("Setting homedir permissions for $userhome"); - system("$execdir/lchtmldir $userhome $user $authtype"); + my $path=$perlvar{'lonDocRoot'}."/priv/$domain"; + unless (-e $path) { + mkdir($path); + } + unless (-e $path.'/'.$user) { + mkdir($path.'/'.$user); + } } } @@ -6213,9 +6882,7 @@ 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"); @@ -6310,54 +6977,24 @@ 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, @@ -6388,6 +7025,65 @@ 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,$newline)=@_; @@ -6600,7 +7296,9 @@ sub subscribe { # the metadata unless ($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 { @@ -6642,7 +7340,7 @@ sub change_unix_password { sub make_passwd_file { - my ($uname, $umode,$npass,$passfilename)=@_; + my ($uname,$udom,$umode,$npass,$passfilename)=@_; my $result="ok"; if ($umode eq 'krb4' or $umode eq 'krb5') { { @@ -6683,7 +7381,7 @@ sub make_passwd_file { # my $uid = getpwnam($uname); if((defined $uid) && ($uid == 0)) { - &logthis(">>>Attempted to create privilged account blocked"); + &logthis(">>>Attempt to create privileged account blocked"); return "no_priv_account_error\n"; } @@ -6695,6 +7393,7 @@ sub make_passwd_file { &Debug("user = ".$uname.", Password =". $npass); my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log"); print $se "$uname\n"; + print $se "$udom\n"; print $se "$npass\n"; print $se "$npass\n"; print $se "$lc_error_file\n"; # Status -> unique file. @@ -6758,7 +7457,7 @@ 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 ". $perlvar{'lonHostID'}." refusing connection"); @@ -6773,6 +7472,253 @@ sub version { return "version:$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; +} + +# +# releasereqd_check() will determine if a LON-CAPA version (defined in the +# $major,$minor args passed) is not too old to allow use of a role in a +# course ($cnum,$cdom args passed), if at least one of the following applies: +# (a) the course is a Community, (b) the course's home server is *not* the +# current server, or (c) cached course information is not stale. +# +# For the case where none of these apply, the course is added to the +# $homecourse hash ref (keys = courseIDs, values = array of a hash of roles). +# The $homecourse hash ref is for courses for which the current server is the +# home server. LON-CAPA version requirements are checked elsewhere for the +# items in $homecourse. +# + +sub releasereqd_check { + my ($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($homecourses->{$cdom}) eq 'HASH') { + if (ref($homecourses->{$cdom}{$cnum}) eq 'HASH') { + if (ref($homecourses->{$cdom}{$cnum}) eq 'ARRAY') { + push(@{$homecourses->{$cdom}{$cnum}},{$key=>$value}); + } else { + $homecourses->{$cdom}{$cnum} = [{$key=>$value}]; + } + } else { + $homecourses->{$cdom}{$cnum} = [{$key=>$value}]; + } + } else { + $homecourses->{$cdom}{$cnum} = [{$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,$minor)); + } + } else { + return; + } + } + return 1; +} + +# +# get_courseinfo_hash() is used to retrieve course information from the db +# file: nohist_courseids.db for a course for which the current server is *not* +# the home server. +# +# A hash of a hash will be retrieved. The outer hash contains a single key -- +# courseID -- for the course for which the data are being requested. +# The contents of the inner hash, for that single item in the outer hash +# are returned (and cached in memcache for 10 minutes). +# + +sub get_courseinfo_hash { + my ($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; +} + +# +# check_homecourses() will retrieve course information for those courses which +# are keys of the $homecourses hash ref (first arg). The nohist_courseids.db +# GDBM file is tied and course information for each course retrieved. Last +# visit (lasttime key) is also retrieved for each, and cached values updated +# for any courses last visited less than 24 hours ago. Cached values are also +# updated for any courses included in the $homecourses hash ref. +# +# The reason for the 24 hours constraint is that the cron entry in +# /etc/cron.d/loncapa for /home/httpd/perl/refresh_courseids_db.pl causes +# cached course information to be updated nightly for courses with activity +# within the past 24 hours. +# +# Role information for the user (included in a ref to an array of hashes as the +# value for each key in $homecourses) is appended to the result returned by the +# routine, which will in turn be appended to the string returned to the client +# hosting the user's session. +# + +sub check_homecourses { + my ($homecourses,$regexp,$count,$range,$start,$end,$major,$minor) = @_; + my ($result,%addtocache); + my $yesterday = time - 24*3600; + if (ref($homecourses) eq 'HASH') { + my (%okcourses,%courseinfo,%recent); + foreach my $domain (keys(%{$homecourses})) { + my $hashref = + &tie_domain_hash($domain, "nohist_courseids", &GDBM_WRCREAT()); + if (ref($hashref) eq 'HASH') { + while (my ($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($items) eq 'HASH') { + my ($cdom,$cnum) = split(/_/,$unesc_key); + my $hashid = $cdom.':'.$cnum; + $courseinfo{$hashid} = $items; + if (ref($homecourses->{$cdom}{$cnum}) 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 for $domain"); + } + } else { + &logthis("Failed to tie hash for nohist_courseids.db for $domain"); + } + } + 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 $cdom (keys(%{$homecourses})) { + if (ref($homecourses->{$cdom}) eq 'HASH') { + foreach my $cnum (keys(%{$homecourses->{$cdom}})) { + my $hashid = $cdom.':'.$cnum; + next if ($recent{$hashid}); + &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600); + } + } + } + foreach my $hashid (keys(%okcourses)) { + my ($cdom,$cnum) = split(/:/,$hashid); + if ((ref($homecourses->{$cdom}) eq 'HASH') && + (ref($homecourses->{$cdom}{$cnum}) eq 'ARRAY')) { + foreach my $role (@{$homecourses->{$cdom}{$cnum}}) { + 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 $result; +} + +# +# useable_role() will compare the LON-CAPA version required by a course with +# the version available on the client server. If the client server's version +# is compatible, 1 will be returned. +# + +sub useable_role { + my ($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) @@ -6981,7 +7927,7 @@ Place in B stores hash in namespace -=item rolesputy +=item rolesput put a role into a user's environment @@ -7107,3 +8053,408 @@ linux Server/Process =cut + + +=pod + +=head1 LOG MESSAGES + +The messages below can be emitted in the lond log. This log is located +in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation +to provide coloring if examined from inside a web page. Some do not. +Where color is used, the colors are; Red for sometihhng to get excited +about and to follow up on. Yellow for something to keep an eye on to +be sure it does not get worse, Green,and Blue for informational items. + +In the discussions below, sometimes reference is made to ~httpd +when describing file locations. There isn't really an httpd +user, however there is an httpd directory that gets installed in the +place that user home directories go. On linux, this is usually +(always?) /home/httpd. + + +Some messages are colorless. These are usually (not always) +Green/Blue color level messages. + +=over 2 + +=item (Red) LocalConnection rejecting non local: ne 127.0.0.1 + +A local connection negotiation was attempted by +a host whose IP address was not 127.0.0.1. +The socket is closed and the child will exit. +lond has three ways to establish an encyrption +key with a client: + +=over 2 + +=item local + +The key is written and read from a file. +This is only valid for connections from localhost. + +=item insecure + +The key is generated by the server and +transmitted to the client. + +=item ssl (secure) + +An ssl connection is negotiated with the client, +the key is generated by the server and sent to the +client across this ssl connection before the +ssl connectionis terminated and clear text +transmission resumes. + +=back + +=item (Red) LocalConnection: caller is insane! init = and type = + +The client is local but has not sent an initialization +string that is the literal "init:local" The connection +is closed and the child exits. + +=item Red CRITICAL Can't get key file + +SSL key negotiation is being attempted but the call to +lonssl::KeyFile failed. This usually means that the +configuration file is not correctly defining or protecting +the directories/files lonCertificateDirectory or +lonnetPrivateKey + is a string that describes the reason that +the key file could not be located. + +=item (Red) CRITICAL Can't get certificates + +SSL key negotiation failed because we were not able to retrives our certificate +or the CA's certificate in the call to lonssl::CertificateFile + is the textual reason this failed. Usual reasons: + +=over 2 + +=item Apache config file for loncapa incorrect: + +one of the variables +lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate +undefined or incorrect + +=item Permission error: + +The directory pointed to by lonCertificateDirectory is not readable by lond + +=item Permission error: + +Files in the directory pointed to by lonCertificateDirectory are not readable by lond. + +=item Installation error: + +Either the certificate authority file or the certificate have not +been installed in lonCertificateDirectory. + +=item (Red) CRITICAL SSL Socket promotion failed: + +The promotion of the connection from plaintext to SSL failed + is the reason for the failure. There are two +system calls involved in the promotion (one of which failed), +a dup to produce +a second fd on the raw socket over which the encrypted data +will flow and IO::SOcket::SSL->new_from_fd which creates +the SSL connection on the duped fd. + +=item (Blue) WARNING client did not respond to challenge + +This occurs on an insecure (non SSL) connection negotiation request. +lond generates some number from the time, the PID and sends it to +the client. The client must respond by echoing this information back. +If the client does not do so, that's a violation of the challenge +protocols and the connection will be failed. + +=item (Red) No manager table. Nobody can manage!! + +lond has the concept of privileged hosts that +can perform remote management function such +as update the hosts.tab. The manager hosts +are described in the +~httpd/lonTabs/managers.tab file. +this message is logged if this file is missing. + + +=item (Green) Registering manager as with + +Reports the successful parse and registration +of a specific manager. + +=item Green existing host + +The manager host is already defined in the hosts.tab +the information in that table, rather than the info in the +manager table will be used to determine the manager's ip. + +=item (Red) Unable to craete + +lond has been asked to create new versions of an administrative +file (by a manager). When this is done, the new file is created +in a temp file and then renamed into place so that there are always +usable administrative files, even if the update fails. This failure +message means that the temp file could not be created. +The update is abandoned, and the old file is available for use. + +=item (Green) CopyFile from to failed + +In an update of administrative files, the copy of the existing file to a +backup file failed. The installation of the new file may still succeed, +but there will not be a back up file to rever to (this should probably +be yellow). + +=item (Green) Pushfile: backed up to + +See above, the backup of the old administrative file succeeded. + +=item (Red) Pushfile: Unable to install + +The new administrative file could not be installed. In this case, +the old administrative file is still in use. + +=item (Green) Installed new < filename>. + +The new administrative file was successfullly installed. + +=item (Red) Reinitializing lond pid= + +The lonc child process will be sent a USR2 +signal. + +=item (Red) Reinitializing self + +We've been asked to re-read our administrative files,and +are doing so. + +=item (Yellow) error:Invalid process identifier + +A reinit command was received, but the target part of the +command was not valid. It must be either +'lond' or 'lonc' but was + +=item (Green) isValideditCommand checking: Command = Key = newline = + +Checking to see if lond has been handed a valid edit +command. It is possible the edit command is not valid +in that case there are no log messages to indicate that. + +=item Result of password change for pwchange_success + +The password for was +successfully changed. + +=item Unable to open passwd to change password + +Could not rewrite the +internal password file for a user + +=item Result of password change for : + +A unix password change for was attempted +and the pipe returned + +=item LWP GET: for () + +The lightweight process fetch for a resource failed +with the local filename that should +have existed/been created was the +corresponding URI: This is emitted in several +places. + +=item Unable to move to + +From fetch_user_file_handler - the user file was replicated but could not +be mv'd to its final location. + +=item Looking for + +From user_has_session_handler - This should be a Debug call instead +it indicates lond is about to check whether the specified user has a +session active on the specified domain on the local host. + +=item Client () hanging up: + +lond has been asked to exit by its client. The and identify the +client systemand is the full exit command sent to the server. + +=item Red CRITICAL: ABNORMAL EXIT. child for server died through a crass with this error->[]. + +A lond child terminated. NOte that this termination can also occur when the +child receives the QUIT or DIE signals. is the process id of the child, + the host lond is working for, and the reason the child died +to the best of our ability to get it (I would guess that any numeric value +represents and errno value). This is immediately followed by + +=item Famous last words: Catching exception - + +Where log is some recent information about the state of the child. + +=item Red CRITICAL: TIME OUT + +Some timeout occured for server . THis is normally a timeout on an LWP +doing an HTTP::GET. + +=item child died + +The reaper caught a SIGCHILD for the lond child process +This should be modified to also display the IP of the dying child +$children{$pid} + +=item Unknown child 0 died +A child died but the wait for it returned a pid of zero which really should not +ever happen. + +=item Child - looks like we missed it's death + +When a sigchild is received, the reaper process checks all children to see if they are +alive. If children are dying quite quickly, the lack of signal queuing can mean +that a signal hearalds the death of more than one child. If so this message indicates +which other one died. is the ip of a dead child + +=item Free socket: + +The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown. +for whatever reason, is printed but in fact shutdown() is not documented +to return anything. This is followed by: + +=item Red CRITICAL: Shutting down + +Just prior to exit. + +=item Free socket: + +The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself. +This is followed by: + +=item (Red) CRITICAL: Restarting + +lond is about to exec itself to restart. + +=item (Blue) Updating connections + +(In response to a USR2). All the children (except the one for localhost) +are about to be killed, the hosts tab reread, and Apache reloaded via apachereload. + +=item (Blue) UpdateHosts killing child for ip + +Due to USR2 as above. + +=item (Green) keeping child for ip (pid = ) + +In response to USR2 as above, the child indicated is not being restarted because +it's assumed that we'll always need a child for the localhost. + + +=item Going to check on the children + +Parent is about to check on the health of the child processes. +Note that this is in response to a USR1 sent to the parent lond. +there may be one or more of the next two messages: + +=item is dead + +A child that we have in our child hash as alive has evidently died. + +=item Child did not respond + +In the health check the child did not update/produce a pid_.txt +file when sent it's USR1 signal. That process is killed with a 9 signal, as it's +assumed to be hung in some un-fixable way. + +=item Finished checking children + +Master processs's USR1 processing is cojmplete. + +=item (Red) CRITICAL: ------- Starting ------ + +(There are more '-'s on either side). Lond has forked itself off to +form a new session and is about to start actual initialization. + +=item (Green) Attempting to start child () + +Started a new child process for . Client is IO::Socket object +connected to the child. This was as a result of a TCP/IP connection from a client. + +=item Unable to determine who caller was, getpeername returned nothing + +In child process initialization. either getpeername returned undef or +a zero sized object was returned. Processing continues, but in my opinion, +this should be cause for the child to exit. + +=item Unable to determine clientip + +In child process initialization. The peer address from getpeername was not defined. +The client address is stored as "Unavailable" and processing continues. + +=item (Yellow) INFO: Connection connection type = + +In child initialization. A good connectionw as received from . + +=over 2 + +=item + +is the name of the client from hosts.tab. + +=item + +Is the connection type which is either + +=over 2 + +=item manager + +The connection is from a manager node, not in hosts.tab + +=item client + +the connection is from a non-manager in the hosts.tab + +=item both + +The connection is from a manager in the hosts.tab. + +=back + +=back + +=item (Blue) Certificates not installed -- trying insecure auth + +One of the certificate file, key file or +certificate authority file could not be found for a client attempting +SSL connection intiation. COnnection will be attemptied in in-secure mode. +(this would be a system with an up to date lond that has not gotten a +certificate from us). + +=item (Green) Successful local authentication + +A local connection successfully negotiated the encryption key. +In this case the IDEA key is in a file (that is hopefully well protected). + +=item (Green) Successful ssl authentication with + +The client ( is the peer's name in hosts.tab), has successfully +negotiated an SSL connection with this child process. + +=item (Green) Successful insecure authentication with + + +The client has successfully negotiated an insecure connection withthe child process. + +=item (Yellow) Attempted insecure connection disallowed + +The client attempted and failed to successfully negotiate a successful insecure +connection. This can happen either because the variable londAllowInsecure is false +or undefined, or becuse the child did not successfully echo back the challenge +string. + + +=back + +=back + + +=cut