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Diff for /loncom/lond between versions 1.467.2.8 and 1.491

version 1.467.2.8, 2014/06/09 16:58:22 version 1.491, 2012/04/25 21:22:28
Line 15 Line 15
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
   
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
Line 33  use strict; Line 34  use strict;
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA;  use LONCAPA;
 use LONCAPA::Configuration;  use LONCAPA::Configuration;
   use LONCAPA::Lond;
   
 use IO::Socket;  use IO::Socket;
 use IO::File;  use IO::File;
Line 91  my %managers;   # Ip -> manager names Line 93  my %managers;   # Ip -> manager names
   
 my %perlvar; # Will have the apache conf defined perl vars.  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.  #   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:  #    Each element of the hash contains a reference to an array that contains:
Line 600  sub InstallFile { Line 604  sub InstallFile {
 #  #
 #   ConfigFileFromSelector: converts a configuration file selector  #   ConfigFileFromSelector: converts a configuration file selector
 #                 into a configuration file pathname.  #                 into a configuration file pathname.
 #                 Supports the following file selectors:  #                 Supports the following file selectors: 
 #                 hosts, domain, dns_hosts, dns_domain  #                 hosts, domain, dns_hosts, dns_domain  
 #  #
 #  #
 #  Parameters:  #  Parameters:
Line 614  sub ConfigFileFromSelector { Line 618  sub ConfigFileFromSelector {
     my $tablefile;      my $tablefile;
   
     my $tabledir = $perlvar{'lonTabDir'}.'/';      my $tabledir = $perlvar{'lonTabDir'}.'/';
     if (($selector eq "hosts") || ($selector eq "domain") ||      if (($selector eq "hosts") || ($selector eq "domain") || 
         ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {          ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
         $tablefile =  $tabledir.$selector.'.tab';   $tablefile =  $tabledir.$selector.'.tab';
     }      }
     return $tablefile;      return $tablefile;
   
 }  }
 #  #
 #   PushFile:  Called to do an administrative push of a file.  #   PushFile:  Called to do an administrative push of a file.
Line 637  sub ConfigFileFromSelector { Line 640  sub ConfigFileFromSelector {
 #     String to send to client ("ok" or "refused" if bad file).  #     String to send to client ("ok" or "refused" if bad file).
 #  #
 sub PushFile {  sub PushFile {
     my $request = shift;      my $request = shift;    
     my ($command, $filename, $contents) = split(":", $request, 3);      my ($command, $filename, $contents) = split(":", $request, 3);
     &Debug("PushFile");      &Debug("PushFile");
           
Line 646  sub PushFile { Line 649  sub PushFile {
     #   hosts.tab  ($filename eq host).      #   hosts.tab  ($filename eq host).
     #   domain.tab ($filename eq domain).      #   domain.tab ($filename eq domain).
     #   dns_hosts.tab ($filename eq dns_host).      #   dns_hosts.tab ($filename eq dns_host).
     #   dns_domain.tab ($filename eq dns_domain).      #   dns_domain.tab ($filename eq dns_domain). 
     # Construct the destination filename or reject the request.      # Construct the destination filename or reject the request.
     #      #
     # lonManage is supposed to ensure this, however this session could be      # lonManage is supposed to ensure this, however this session could be
Line 667  sub PushFile { Line 670  sub PushFile {
   
     if($filename eq "host") {      if($filename eq "host") {
  $contents = AdjustHostContents($contents);   $contents = AdjustHostContents($contents);
     } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {  
         if ($contents eq '') {  
             &logthis('<font color="red"> Pushfile: unable to install '  
                     .$tablefile." - no data received from push. </font>");  
             return 'error: push had no data';  
         }  
         if (&Apache::lonnet::get_host_ip($clientname)) {  
             my $clienthost = &Apache::lonnet::hostname($clientname);  
             if ($managers{$clientip} eq $clientname) {  
                 my $clientprotocol = $Apache::lonnet::protocol{$clientname};  
                 $clientprotocol = 'http' if ($clientprotocol ne 'https');  
                 my $url = '/adm/'.$filename;  
                 $url =~ s{_}{/};  
                 my $ua=new LWP::UserAgent;  
                 $ua->timeout(60);  
                 my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");  
                 my $response=$ua->request($request);  
                 if ($response->is_error()) {  
                     &logthis('<font color="red"> Pushfile: unable to install '  
                             .$tablefile." - error attempting to pull data. </font>");  
                     return 'error: pull failed';  
                 } else {  
                     my $result = $response->content;  
                     chomp($result);  
                     unless ($result eq $contents) {  
                         &logthis('<font color="red"> Pushfile: unable to install '  
                                 .$tablefile." - pushed data and pulled data differ. </font>");  
                         my $pushleng = length($contents);  
                         my $pullleng = length($result);  
                         if ($pushleng != $pullleng) {  
                             return "error: $pushleng vs $pullleng bytes";  
                         } else {  
                             return "error: mismatch push and pull";  
                         }  
                     }  
                 }  
             }  
         }  
     }      }
   
     #  Install the new file:      #  Install the new file:
Line 715  sub PushFile { Line 680  sub PushFile {
  .$tablefile." $! </font>");   .$tablefile." $! </font>");
  return "error:$!";   return "error:$!";
     } else {      } else {
         &logthis('<font color="green"> Installed new '.$tablefile   &logthis('<font color="green"> Installed new '.$tablefile
                  ." - transaction by: $clientname ($clientip)</font>");   ." - transaction by: $clientname ($clientip)</font>");
         my $adminmail = $perlvar{'lonAdmEMail'};          my $adminmail = $perlvar{'lonAdmEMail'};
         my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});          my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
         if ($admindom ne '') {          if ($admindom ne '') {
Line 1679  sub ls3_handler { Line 1644  sub ls3_handler {
 }  }
 &register_handler("ls3", \&ls3_handler, 0, 1, 0);  &register_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;
   }
   &register_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;
   }
   &register_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
   
 sub server_timezone_handler {  sub server_timezone_handler {
     my ($cmd,$tail,$client) = @_;      my ($cmd,$tail,$client) = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
Line 2041  sub add_user_handler { Line 2074  sub add_user_handler {
     ."makeuser";      ."makeuser";
     }      }
     unless ($fperror) {      unless ($fperror) {
  my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);   my $result=&make_passwd_file($uname,$udom,$umode,$npass, $passfilename);
  &Reply($client,\$result, $userinput);     #BUGBUG - could be fail   &Reply($client,\$result, $userinput);     #BUGBUG - could be fail
     } else {      } else {
  &Failure($client, \$fperror, $userinput);   &Failure($client, \$fperror, $userinput);
Line 2116  sub change_authentication_handler { Line 2149  sub change_authentication_handler {
     &Failure($client, \$result);      &Failure($client, \$result);
  }   }
     } else {      } 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   #  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,   #  unix, or krb*,  and the user is an author for this domain,
Line 3213  sub dump_profile_database { Line 3246  sub dump_profile_database {
 #                                             that is matched against  #                                             that is matched against
 #                                             database keywords to do  #                                             database keywords to do
 #                                             selective dumps.  #                                             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.  #   $client                   - Channel open on the client.
 # Returns:  # Returns:
 #    1    - Continue processing.  #    1    - Continue processing.
Line 3222  sub dump_profile_database { Line 3258  sub dump_profile_database {
 sub dump_with_regexp {  sub dump_with_regexp {
     my ($cmd, $tail, $client) = @_;      my ($cmd, $tail, $client) = @_;
   
       #TODO encapsulate $clientname and $clientversion in a object.
       my $res = LONCAPA::Lond::dump_with_regexp($cmd, $tail, $clientname, $clientversion);
       
       if ($res =~ /^error:/) {
           Failure($client, \$res, "$cmd:$tail");
       } else {
           Reply($client, \$res, "$cmd:$tail");
       }
       return 1;
   
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
   
     my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail);      my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail);
     if (defined($regexp)) {      if (defined($regexp)) {
  $regexp=&unescape($regexp);   $regexp=&unescape($regexp);
     } else {      } else {
Line 3243  sub dump_with_regexp { Line 3288  sub dump_with_regexp {
     }      }
     my $hashref = &tie_user_hash($udom, $uname, $namespace,      my $hashref = &tie_user_hash($udom, $uname, $namespace,
  &GDBM_READER());   &GDBM_READER());
     my $skipcheck;  
     if ($hashref) {      if ($hashref) {
         my $qresult='';          my $qresult='';
  my $count=0;   my $count=0;
         if ($extra ne '') {  #
             $extra = &Apache::lonnet::thaw_unescape($extra);  # When dump is for roles.db, determine if LON-CAPA version checking is needed.
             $skipcheck = $extra->{'skipcheck'};  # 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 $skipcheck;
         my @ids = &Apache::lonnet::current_machine_ids();          my @ids = &Apache::lonnet::current_machine_ids();
         my (%homecourses,$major,$minor,$now);          my (%homecourses,$major,$minor,$now);
         if (($namespace eq 'roles') && (!$skipcheck)) {  # 
   # If dump is for roles.db from a pre-2.10 server, determine the LON-CAPA   
   # version on the server which requested the data. For LON-CAPA 2.9, the  
   # client session will have sent its LON-CAPA version when initiating the
   # connection. For LON-CAPA 2.8 and older, the version is retrieved from
   # the global %loncaparevs in lonnet.pm.
   # 
           if ($namespace eq 'roles') {
             my $loncaparev = $clientversion;              my $loncaparev = $clientversion;
             if ($loncaparev eq '') {              if ($loncaparev eq '') {
                 $loncaparev = $Apache::lonnet::loncaparevs{$clientname};                  $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
Line 3262  sub dump_with_regexp { Line 3316  sub dump_with_regexp {
                 $major = $1;                  $major = $1;
                 $minor = $2;                  $minor = $2;
             }              }
               if (($major > 2) || (($major == 2) && ($minor > 9))) {
                   $skipcheck = 1;
               }
             $now = time;              $now = time;
         }          }
  while (my ($key,$value) = each(%$hashref)) {   while (my ($key,$value) = each(%$hashref)) {
             if ($namespace eq 'roles') {              if (($namespace eq 'roles') && (!$skipcheck)) {
                 if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) {                  if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) {
                     my $cdom = $1;                      my $cdom = $1;
                     my $cnum = $2;                      my $cnum = $2;
                     unless ($skipcheck) {                      my ($role,$roleend,$rolestart) = split(/\_/,$value);
                         my ($role,$end,$start) = split(/\_/,$value);                      if (!$roleend || $roleend > $now) {
                         if (!$end || $end > $now) {  #
                             next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major,  # For active course roles, check that requesting server is running a LON-CAPA
                                                             $minor,\%homecourses,\@ids));  # version which meets any version requirements for the course. Do not include
                         }  # the role amongst the results returned if the requesting server's version is
   # too old.
   #
   # This determination is handled differently depending on whether the course's 
   # homeserver is the current server, or whether it is a different server.
   # In both cases, the course's version requirement needs to be retrieved.
   # 
                           next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major,
                                                           $minor,\%homecourses,\@ids));
                     }                      }
                 }                  }
             }              }
Line 3294  sub dump_with_regexp { Line 3359  sub dump_with_regexp {
     }      }
  }   }
  if (&untie_user_hash($hashref)) {   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') && (!$skipcheck)) {              if (($namespace eq 'roles') && (!$skipcheck)) {
                 if (keys(%homecourses) > 0) {                  if (keys(%homecourses) > 0) {
                     $qresult .= &check_homecourses(\%homecourses,$udom,$regexp,$count,                      $qresult .= &check_homecourses(\%homecourses,$regexp,$count,
                                                    $range,$start,$end,$major,$minor);                                                     $range,$start,$end,$major,$minor);
                 }                  }
             }              }
Line 5079  sub validate_course_owner_handler { Line 5151  sub validate_course_owner_handler {
     my ($cmd, $tail, $client)  = @_;      my ($cmd, $tail, $client)  = @_;
     my $userinput = "$cmd:$tail";      my $userinput = "$cmd:$tail";
     my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);      my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
       
     $owner = &unescape($owner);      $owner = &unescape($owner);
     $coowners = &unescape($coowners);      $coowners = &unescape($coowners);
     my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);      my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
Line 6070  if (-e $pidfile) { Line 6142  if (-e $pidfile) {
 $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},  $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
                                 Type      => SOCK_STREAM,                                  Type      => SOCK_STREAM,
                                 Proto     => 'tcp',                                  Proto     => 'tcp',
                                 ReuseAddr => 1,                                  ReuseAddr     => 1,
                                 Listen    => 10 )                                  Listen    => 10 )
   or die "making socket: $@\n";    or die "making socket: $@\n";
   
Line 6133  sub HUPSMAN {                      # sig Line 6205  sub HUPSMAN {                      # sig
 #  a setuid perl script that can be root for us to do this job.  #  a setuid perl script that can be root for us to do this job.
 #  #
 sub ReloadApache {  sub ReloadApache {
   # --------------------------- Handle case of another apachereload process (locking)
     if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {      if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
         my $execdir = $perlvar{'lonDaemons'};          my $execdir = $perlvar{'lonDaemons'};
         my $script  = $execdir."/apachereload";          my $script  = $execdir."/apachereload";
Line 6249  sub Debug { Line 6322  sub Debug {
 #     reply   - Text to send to client.  #     reply   - Text to send to client.
 #     request - Original request from client.  #     request - Original request from client.
 #  #
   #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
   #this is done automatically ($$reply must not contain any \n in this case). 
   #If $reply is a string the caller has to ensure this.
 sub Reply {  sub Reply {
     my ($fd, $reply, $request) = @_;      my ($fd, $reply, $request) = @_;
     if (ref($reply)) {      if (ref($reply)) {
Line 6402  $SIG{USR2} = \&UpdateHosts; Line 6478  $SIG{USR2} = \&UpdateHosts;
 &Apache::lonnet::load_hosts_tab();  &Apache::lonnet::load_hosts_tab();
 my %iphost = &Apache::lonnet::get_iphost(1);  my %iphost = &Apache::lonnet::get_iphost(1);
   
 my $dist=`$perlvar{'lonDaemons'}/distprobe`;  $dist=`$perlvar{'lonDaemons'}/distprobe`;
   
 my $arch = `uname -i`;  my $arch = `uname -i`;
 chomp($arch);  chomp($arch);
Line 6477  sub make_new_child { Line 6553  sub make_new_child {
                                 #don't get intercepted                                  #don't get intercepted
         $SIG{USR1}= \&logstatus;          $SIG{USR1}= \&logstatus;
         $SIG{ALRM}= \&timeout;          $SIG{ALRM}= \&timeout;
    #
         #   # Block sigpipe as it gets thrownon socket disconnect and we want to 
         # Block sigpipe as it gets thrownon socket disconnect and we want to   # deal with that as a read faiure instead.
         # deal with that as a read faiure instead.   #
         #   my $blockset = POSIX::SigSet->new(SIGPIPE);
         my $blockset = POSIX::SigSet->new(SIGPIPE);   sigprocmask(SIG_BLOCK, $blockset);
         sigprocmask(SIG_BLOCK, $blockset);  
   
         $lastlog='Forked ';          $lastlog='Forked ';
         $status='Forked';          $status='Forked';
Line 6685  sub is_author { Line 6760  sub is_author {
   
     #  Author role should show up as a key /domain/_au      #  Author role should show up as a key /domain/_au
   
     my $key    = "/$domain/_au";  
     my $value;      my $value;
     if (defined($hashref)) {      if ($hashref) {
  $value = $hashref->{$key};  
     }  
   
     if(defined($value)) {   my $key    = "/$domain/_au";
  &Debug("$user @ $domain is an author");   if (defined($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($value);      return defined($value);
 }  }
 #  #
 #   Checks to see if the input roleput request was to set  #   Checks to see if the input roleput request was to set
 # an author role.  If so, invokes the lchtmldir script to set  # an author role.  If so, creates construction space 
 # up a correct public_html   
 # Parameters:  # Parameters:
 #    request   - The request sent to the rolesput subchunk.  #    request   - The request sent to the rolesput subchunk.
 #                We're looking for  /domain/_au  #                We're looking for  /domain/_au
Line 6710  sub is_author { Line 6792  sub is_author {
 #  #
 sub manage_permissions {  sub manage_permissions {
     my ($request, $domain, $user, $authtype) = @_;      my ($request, $domain, $user, $authtype) = @_;
   
     &Debug("manage_permissions: $request $domain $user $authtype");  
   
     # See if the request is of the form /$domain/_au      # See if the request is of the form /$domain/_au
     if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...      if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
  my $execdir = $perlvar{'lonDaemons'};          my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
  my $userhome= "/home/$user" ;          unless (-e $path) {        
  &logthis("system $execdir/lchtmldir $userhome $user $authtype");             mkdir($path);
  &Debug("Setting homedir permissions for $userhome");          }
  system("$execdir/lchtmldir $userhome $user $authtype");          unless (-e $path.'/'.$user) {
              mkdir($path.'/'.$user);
           }
     }      }
 }  }
   
Line 7252  sub change_unix_password { Line 7333  sub change_unix_password {
   
   
 sub make_passwd_file {  sub make_passwd_file {
     my ($uname, $umode,$npass,$passfilename)=@_;      my ($uname,$udom,$umode,$npass,$passfilename)=@_;
     my $result="ok";      my $result="ok";
     if ($umode eq 'krb4' or $umode eq 'krb5') {      if ($umode eq 'krb4' or $umode eq 'krb5') {
  {   {
Line 7293  sub make_passwd_file { Line 7374  sub make_passwd_file {
     #      #
     my $uid = getpwnam($uname);      my $uid = getpwnam($uname);
     if((defined $uid) && ($uid == 0)) {      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";   return "no_priv_account_error\n";
     }      }
   
Line 7305  sub make_passwd_file { Line 7386  sub make_passwd_file {
  &Debug("user  = ".$uname.", Password =". $npass);   &Debug("user  = ".$uname.", Password =". $npass);
  my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");   my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
  print $se "$uname\n";   print $se "$uname\n";
                   print $se "$udom\n";
  print $se "$npass\n";   print $se "$npass\n";
  print $se "$npass\n";   print $se "$npass\n";
  print $se "$lc_error_file\n"; # Status -> unique file.   print $se "$lc_error_file\n"; # Status -> unique file.
Line 7398  sub get_usersession_config { Line 7480  sub get_usersession_config {
     return;      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 {  sub releasereqd_check {
     my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_;      my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_;
     my $home = &Apache::lonnet::homeserver($cnum,$cdom);      my $home = &Apache::lonnet::homeserver($cnum,$cdom);
Line 7427  sub releasereqd_check { Line 7523  sub releasereqd_check {
         if (ref($ids) eq 'ARRAY') {          if (ref($ids) eq 'ARRAY') {
             if (grep(/^\Q$home\E$/,@{$ids})) {              if (grep(/^\Q$home\E$/,@{$ids})) {
                 if (ref($homecourses) eq 'HASH') {                  if (ref($homecourses) eq 'HASH') {
                     if (ref($homecourses->{$hashid}) eq 'ARRAY') {                      if (ref($homecourses->{$cdom}) eq 'HASH') {
                         push(@{$homecourses->{$hashid}},{$key=>$value});                          if (ref($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 {                      } else {
                         $homecourses->{$hashid} = [{$key=>$value}];                          $homecourses->{$cdom}{$cnum} = [{$key=>$value}];
                     }                      }
                 }                  }
                 return;                  return;
Line 7449  sub releasereqd_check { Line 7553  sub releasereqd_check {
     return 1;      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 {  sub get_courseinfo_hash {
     my ($cnum,$cdom,$home) = @_;      my ($cnum,$cdom,$home) = @_;
     my %info;      my %info;
Line 7474  sub get_courseinfo_hash { Line 7589  sub get_courseinfo_hash {
     return;      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 {  sub check_homecourses {
     my ($homecourses,$udom,$regexp,$count,$range,$start,$end,$major,$minor) = @_;      my ($homecourses,$regexp,$count,$range,$start,$end,$major,$minor) = @_;
     my ($result,%addtocache);      my ($result,%addtocache);
     my $yesterday = time - 24*3600;       my $yesterday = time - 24*3600; 
     if (ref($homecourses) eq 'HASH') {      if (ref($homecourses) eq 'HASH') {
         my (%okcourses,%courseinfo,%recent);          my (%okcourses,%courseinfo,%recent);
         my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());          foreach my $domain (keys(%{$homecourses})) {
         if ($hashref) {              my $hashref = 
             while (my ($key,$value) = each(%$hashref)) {                  &tie_domain_hash($domain, "nohist_courseids", &GDBM_WRCREAT());
                 my $unesc_key = &unescape($key);              if (ref($hashref) eq 'HASH') {
                 if ($unesc_key =~ /^lasttime:(\w+)$/) {                  while (my ($key,$value) = each(%$hashref)) {
                     my $cid = $1;                      my $unesc_key = &unescape($key);
                     $cid =~ s/_/:/;                      if ($unesc_key =~ /^lasttime:(\w+)$/) {
                     if ($value > $yesterday ) {                          my $cid = $1;
                         $recent{$cid} = 1;                          $cid =~ s/_/:/;
                           if ($value > $yesterday ) {
                               $recent{$cid} = 1;
                           }
                           next;
                     }                      }
                     next;                      my $items = &Apache::lonnet::thaw_unescape($value);
                 }                      if (ref($items) eq 'HASH') {
                 my $items = &Apache::lonnet::thaw_unescape($value);                          my ($cdom,$cnum) = split(/_/,$unesc_key);
                 if (ref($items) eq 'HASH') {                          my $hashid = $cdom.':'.$cnum; 
                     my $hashid = $unesc_key;                          $courseinfo{$hashid} = $items;
                     $hashid =~ s/_/:/;                          if (ref($homecourses->{$cdom}{$cnum}) eq 'ARRAY') {
                     $courseinfo{$hashid} = $items;                              my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'});
                     if (ref($homecourses->{$hashid}) eq 'ARRAY') {                              if (&useable_role($reqdmajor,$reqdminor,$major,$minor)) {
                         my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'});                                 $okcourses{$hashid} = 1;
                         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 $domain");
             }              }
             unless (&untie_domain_hash($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)) {          foreach my $hashid (keys(%recent)) {
             my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);              my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);
Line 7518  sub check_homecourses { Line 7654  sub check_homecourses {
                 &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);                  &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
             }              }
         }          }
         foreach my $hashid (keys(%{$homecourses})) {          foreach my $cdom (keys(%{$homecourses})) {
             next if ($recent{$hashid});              if (ref($homecourses->{$cdom}) eq 'HASH') {
             &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);                  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)) {          foreach my $hashid (keys(%okcourses)) {
             if (ref($homecourses->{$hashid}) eq 'ARRAY') {              my ($cdom,$cnum) = split(/:/,$hashid);
                 foreach my $role (@{$homecourses->{$hashid}}) {              if ((ref($homecourses->{$cdom}) eq 'HASH') &&  
                   (ref($homecourses->{$cdom}{$cnum}) eq 'ARRAY')) {
                   foreach my $role (@{$homecourses->{$cdom}{$cnum}}) {
                     if (ref($role) eq 'HASH') {                      if (ref($role) eq 'HASH') {
                         while (my ($key,$value) = each(%{$role})) {                          while (my ($key,$value) = each(%{$role})) {
                             if ($regexp eq '.') {                              if ($regexp eq '.') {
Line 7550  sub check_homecourses { Line 7693  sub check_homecourses {
     return $result;      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 {  sub useable_role {
     my ($reqdmajor,$reqdminor,$major,$minor) = @_;       my ($reqdmajor,$reqdminor,$major,$minor) = @_; 
     if ($reqdmajor ne '' && $reqdminor ne '') {      if ($reqdmajor ne '' && $reqdminor ne '') {
Line 7888  Authen::Krb5 Line 8037  Authen::Krb5
   
 =head1 COREQUISITES  =head1 COREQUISITES
   
   none
   
 =head1 OSNAMES  =head1 OSNAMES
   
 linux  linux
Line 7975  or the CA's certificate in the call to l Line 8126  or the CA's certificate in the call to l
 <error> is the textual reason this failed.  Usual reasons:  <error> is the textual reason this failed.  Usual reasons:
   
 =over 2  =over 2
          
 =item Apache config file for loncapa  incorrect:  =item Apache config file for loncapa  incorrect:
    
 one of the variables   one of the variables 
 lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate  lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
 undefined or incorrect  undefined or incorrect
Line 8096  Could not rewrite the Line 8247  Could not rewrite the
 internal password file for a user  internal password file for a user
   
 =item Result of password change for <user> : <result>  =item Result of password change for <user> : <result>
                                                                        
 A unix password change for <user> was attempted   A unix password change for <user> was attempted 
 and the pipe returned <result>    and the pipe returned <result>  
   
Line 8125  lond has been asked to exit by its clien Line 8276  lond has been asked to exit by its clien
 client systemand <input> is the full exit command sent to the server.  client systemand <input> is the full exit command sent to the server.
   
 =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].  =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
                                                    
 A lond child terminated.  NOte that this termination can also occur when the  A lond child terminated.  NOte that this termination can also occur when the
 child receives the QUIT or DIE signals.  <pid> is the process id of the child,  child receives the QUIT or DIE signals.  <pid> is the process id of the child,
 <hostname> the host lond is working for, and <message> the reason the child died  <hostname> the host lond is working for, and <message> the reason the child died
Line 8209  file when sent it's USR1 signal.  That p Line 8360  file when sent it's USR1 signal.  That p
 assumed to be hung in some un-fixable way.  assumed to be hung in some un-fixable way.
   
 =item Finished checking children                     =item Finished checking children                   
    
 Master processs's USR1 processing is cojmplete.  Master processs's USR1 processing is cojmplete.
   
 =item (Red) CRITICAL: ------- Starting ------              =item (Red) CRITICAL: ------- Starting ------            
Line 8223  Started a new child process for <client> Line 8374  Started a new child process for <client>
 connected to the child.  This was as a result of a TCP/IP connection from a client.  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  =item Unable to determine who caller was, getpeername returned nothing
                                                     
 In child process initialization.  either getpeername returned undef or  In child process initialization.  either getpeername returned undef or
 a zero sized object was returned.  Processing continues, but in my opinion,  a zero sized object was returned.  Processing continues, but in my opinion,
 this should be cause for the child to exit.  this should be cause for the child to exit.
Line 8234  In child process initialization.  The pe Line 8385  In child process initialization.  The pe
 The client address is stored as "Unavailable" and processing continues.  The client address is stored as "Unavailable" and processing continues.
   
 =item (Yellow) INFO: Connection <ip> <name> connection type = <type>  =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
                                                     
 In child initialization.  A good connectionw as received from <ip>.  In child initialization.  A good connectionw as received from <ip>.
   
 =over 2  =over 2
Line 8284  The client (<client> is the peer's name Line 8435  The client (<client> is the peer's name
 negotiated an SSL connection with this child process.  negotiated an SSL connection with this child process.
   
 =item (Green) Successful insecure authentication with <client>  =item (Green) Successful insecure authentication with <client>
                                                      
   
 The client has successfully negotiated an  insecure connection withthe child process.  The client has successfully negotiated an  insecure connection withthe child process.
   
Removed from v.1.467.2.8  
changed lines
  Added in v.1.491

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