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Diff for /loncom/Attic/lonc between versions 1.8 and 1.13

version 1.8, 2000/12/05 03:23:59 version 1.13, 2001/01/10 17:53:51
Line 12 Line 12
   
 # 6/4/99,6/5,6/7,6/8,6/9,6/10,6/11,6/12,7/14,7/19,  # 6/4/99,6/5,6/7,6/8,6/9,6/10,6/11,6/12,7/14,7/19,
 # 10/8,10/9,10/15,11/18,12/22,  # 10/8,10/9,10/15,11/18,12/22,
 # 2/8,7/25 Gerd Kortemeyer   # 2/8,7/25 Gerd Kortemeyer
   # 12/05 Scott Harrison
   # 12/05 Gerd Kortemeyer
   # 
 # based on nonforker from Perl Cookbook  # based on nonforker from Perl Cookbook
 # - server who multiplexes without forking  # - server who multiplexes without forking
   
Line 25  use Fcntl; Line 28  use Fcntl;
 use Tie::RefHash;  use Tie::RefHash;
 use Crypt::IDEA;  use Crypt::IDEA;
   
   # grabs exception and records it to log before exiting
   sub catchexception {
       my ($signal)=@_;
       $SIG{'QUIT'}='DEFAULT';
       $SIG{__DIE__}='DEFAULT';
       &logthis("<font color=red>CRITICAL: "
        ."ABNORMAL EXIT. Child $$ for server $wasserver died through "
        ."\"$signal\" with this parameter->[$@]</font>");
       die($@);
   }
   
 $childmaxattempts=10;  $childmaxattempts=10;
   
 # -------------------------------- Set signal handlers to record abnormal exits  # -------------------------------- Set signal handlers to record abnormal exits
Line 34  $SIG{__DIE__}=\&catchexception; Line 48  $SIG{__DIE__}=\&catchexception;
   
 # ------------------------------------ Read httpd access.conf and get variables  # ------------------------------------ Read httpd access.conf and get variables
   
 open (CONFIG,"/etc/httpd/conf/access.conf")   open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
     || catchdie "Can't read access.conf";  
   
 while ($configline=<CONFIG>) {  while ($configline=<CONFIG>) {
     if ($configline =~ /PerlSetVar/) {      if ($configline =~ /PerlSetVar/) {
Line 46  while ($configline=<CONFIG>) { Line 59  while ($configline=<CONFIG>) {
 }  }
 close(CONFIG);  close(CONFIG);
   
   # ----------------------------- Make sure this process is running from user=www
   my $wwwid=getpwnam('www');
   if ($wwwid!=$<) {
      $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
      $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
      system("echo 'User ID mismatch.  loncron must be run as user www.' |\
    mailto $emailto -s '$subj' > /dev/null");
      exit 1;
   }
   
 # --------------------------------------------- Check if other instance running  # --------------------------------------------- Check if other instance running
   
 my $pidfile="$perlvar{'lonDaemons'}/logs/lonc.pid";  my $pidfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
Line 54  if (-e $pidfile) { Line 77  if (-e $pidfile) {
    my $lfh=IO::File->new("$pidfile");     my $lfh=IO::File->new("$pidfile");
    my $pide=<$lfh>;     my $pide=<$lfh>;
    chomp($pide);     chomp($pide);
    if (kill 0 => $pide) { catchdie "already running"; }     if (kill 0 => $pide) { die "already running"; }
 }  }
   
 # ------------------------------------------------------------- Read hosts file  # ------------------------------------------------------------- Read hosts file
   
 open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab")   open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
     || catchdie "Can't read host file";  
   
 while ($configline=<CONFIG>) {  while ($configline=<CONFIG>) {
     my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);      my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
Line 103  sub HUPSMAN {                      # sig Line 125  sub HUPSMAN {                      # sig
     local($SIG{CHLD}) = 'IGNORE';  # we're going to kill our children      local($SIG{CHLD}) = 'IGNORE';  # we're going to kill our children
     kill 'INT' => keys %children;      kill 'INT' => keys %children;
     &logthis("<font color=red>CRITICAL: Restarting</font>");      &logthis("<font color=red>CRITICAL: Restarting</font>");
       unlink("$execdir/logs/lonc.pid");
     my $execdir=$perlvar{'lonDaemons'};      my $execdir=$perlvar{'lonDaemons'};
     exec("$execdir/lonc");         # here we go again      exec("$execdir/lonc");         # here we go again
 }  }
Line 161  sub logperm { Line 184  sub logperm {
   
 $fpid=fork;  $fpid=fork;
 exit if $fpid;  exit if $fpid;
 catchdie "Couldn't fork: $!" unless defined ($fpid);  die "Couldn't fork: $!" unless defined ($fpid);
   
 POSIX::setsid() or catchdie "Can't start new session: $!";  POSIX::setsid() or die "Can't start new session: $!";
   
 # ------------------------------------------------------- Write our PID on disk  # ------------------------------------------------------- Write our PID on disk
   
Line 218  sub make_new_child { Line 241  sub make_new_child {
     # block signal for fork      # block signal for fork
     $sigset = POSIX::SigSet->new(SIGINT);      $sigset = POSIX::SigSet->new(SIGINT);
     sigprocmask(SIG_BLOCK, $sigset)      sigprocmask(SIG_BLOCK, $sigset)
         or catchdie "Can't block SIGINT for fork: $!\n";          or die "Can't block SIGINT for fork: $!\n";
           
     catchdie "fork: $!" unless defined ($pid = fork);      die "fork: $!" unless defined ($pid = fork);
           
     if ($pid) {      if ($pid) {
         # Parent records the child's birth and returns.          # Parent records the child's birth and returns.
         sigprocmask(SIG_UNBLOCK, $sigset)          sigprocmask(SIG_UNBLOCK, $sigset)
             or catchdie "Can't unblock SIGINT for fork: $!\n";              or die "Can't unblock SIGINT for fork: $!\n";
         $children{$pid} = $conserver;          $children{$pid} = $conserver;
         $childpid{$conserver} = $pid;          $childpid{$conserver} = $pid;
         return;          return;
Line 235  sub make_new_child { Line 258  sub make_new_child {
           
         # unblock signals          # unblock signals
         sigprocmask(SIG_UNBLOCK, $sigset)          sigprocmask(SIG_UNBLOCK, $sigset)
             or catchdie "Can't unblock SIGINT for fork: $!\n";              or die "Can't unblock SIGINT for fork: $!\n";
   
 # ----------------------------- This is the modified main program of non-forker  # ----------------------------- This is the modified main program of non-forker
   
Line 279  $key=$key.$buildkey.$key.$buildkey.$key. Line 302  $key=$key.$buildkey.$key.$buildkey.$key.
 $key=substr($key,0,32);  $key=substr($key,0,32);
 my $cipherkey=pack("H32",$key);  my $cipherkey=pack("H32",$key);
 if ($cipher=new IDEA $cipherkey) {  if ($cipher=new IDEA $cipherkey) {
    &logthis("Secure connection inititalized: $conserver");     &logthis("Secure connection initialized: $conserver");
 } else {  } else {
    my $st=120+int(rand(240));     my $st=120+int(rand(240));
    &logthis(     &logthis(
Line 502  sub nonblock { Line 525  sub nonblock {
   
           
     $flags = fcntl($socket, F_GETFL, 0)      $flags = fcntl($socket, F_GETFL, 0)
             or catchdie "Can't get flags for socket: $!\n";              or die "Can't get flags for socket: $!\n";
     fcntl($socket, F_SETFL, $flags | O_NONBLOCK)      fcntl($socket, F_SETFL, $flags | O_NONBLOCK)
             or catchdie "Can't make socket nonblocking: $!\n";              or die "Can't make socket nonblocking: $!\n";
 }  
   
 # grabs exception and records it to log before exiting  
 sub catchexception {  
     my ($signal)=@_;  
     &logthis("<font color=red>CRITICAL: "  
      ."ABNORMAL EXIT. Child $$ for server $wasserver died through "  
      ."$signal with this parameter->[$@]</font>");  
     die($@);  
 }  
   
 # grabs exception and records it to log before exiting  
 # NOTE: we must NOT use the regular (non-overrided) die function in  
 # the code because a handler CANNOT be attached to it  
 # (despite what some of the documentation says about SIG{__DIE__}.  
 sub catchdie {  
     my ($message)=@_;  
     &logthis("<font color=red>CRITICAL: "  
      ."ABNORMAL EXIT. Child $$ for server $wasserver died through "  
      ."\_\_DIE\_\_ with this parameter->[$message]</font>");  
     die($message);  
 }  }
   
Removed from v.1.8  
changed lines
  Added in v.1.13

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