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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.827 and 1.837

version 1.827, 2007/01/18 18:21:10 version 1.837, 2007/03/01 17:51:56
Line 201  sub reply { Line 201  sub reply {
 # ----------------------------------------------------------- Send USR1 to lonc  # ----------------------------------------------------------- Send USR1 to lonc
   
 sub reconlonc {  sub reconlonc {
     my $peerfile=shift;      &logthis("Trying to reconnect lonc");
     &logthis("Trying to reconnect for $peerfile");  
     my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";      my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
     if (open(my $fh,"<$loncfile")) {      if (open(my $fh,"<$loncfile")) {
  my $loncpid=<$fh>;   my $loncpid=<$fh>;
Line 211  sub reconlonc { Line 210  sub reconlonc {
     &logthis("lonc at pid $loncpid responding, sending USR1");      &logthis("lonc at pid $loncpid responding, sending USR1");
             kill USR1 => $loncpid;              kill USR1 => $loncpid;
             sleep 1;              sleep 1;
             if (-e "$peerfile") { return; }           } else {
             &logthis("$peerfile still not there, give it another try");  
             sleep 5;  
             if (-e "$peerfile") { return; }  
             &logthis(  
   "<font color=\"blue\">WARNING: $peerfile still not there, giving up</font>");  
         } else {  
     &logthis(      &logthis(
                "<font color=\"blue\">WARNING:".                 "<font color=\"blue\">WARNING:".
                " lonc at pid $loncpid not responding, giving up</font>");                 " lonc at pid $loncpid not responding, giving up</font>");
         }          }
     } else {      } else {
      &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');   &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
     }      }
 }  }
   
Line 367  sub transfer_profile_to_env { Line 360  sub transfer_profile_to_env {
     }      }
 }  }
   
   sub timed_flock {
       my ($file,$lock_type) = @_;
       my $failed=0;
       eval {
    local $SIG{__DIE__}='DEFAULT';
    local $SIG{ALRM}=sub {
       $failed=1;
       die("failed lock");
    };
    alarm(13);
    flock($file,$lock_type);
    alarm(0);
       };
       if ($failed) {
    return undef;
       } else {
    return 1;
       }
   }
   
 # ---------------------------------------------------------- Append Environment  # ---------------------------------------------------------- Append Environment
   
 sub appenv {  sub appenv {
Line 381  sub appenv { Line 394  sub appenv {
             $env{$key}=$newenv{$key};              $env{$key}=$newenv{$key};
         }          }
     }      }
     if (tie(my %disk_env,'GDBM_File',$env{'user.environment'},&GDBM_WRITER(),      open(my $env_file,$env{'user.environment'});
     0640)) {      if (&timed_flock($env_file,LOCK_EX)
    &&
    tie(my %disk_env,'GDBM_File',$env{'user.environment'},
       (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
  while (my ($key,$value) = each(%newenv)) {   while (my ($key,$value) = each(%newenv)) {
     $disk_env{$key} = $value;      $disk_env{$key} = $value;
  }   }
Line 399  sub delenv { Line 415  sub delenv {
                 "Attempt to delete from environment ".$delthis);                  "Attempt to delete from environment ".$delthis);
         return 'error';          return 'error';
     }      }
     if (tie(my %disk_env,'GDBM_File',$env{'user.environment'},&GDBM_WRITER(),      open(my $env_file,$env{'user.environment'});
     0640)) {      if (&timed_flock($env_file,LOCK_EX)
    &&
    tie(my %disk_env,'GDBM_File',$env{'user.environment'},
       (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
  foreach my $key (keys(%disk_env)) {   foreach my $key (keys(%disk_env)) {
     if ($key=~/^$delthis/) {       if ($key=~/^$delthis/) { 
                 delete($env{$key});                  delete($env{$key});
Line 589  sub authenticate { Line 608  sub authenticate {
     my ($uname,$upass,$udom)=@_;      my ($uname,$upass,$udom)=@_;
     $upass=&escape($upass);      $upass=&escape($upass);
     $uname= &LONCAPA::clean_username($uname);      $uname= &LONCAPA::clean_username($uname);
     my $uhome=&homeserver($uname,$udom);      my $uhome=&homeserver($uname,$udom,1);
     if (!$uhome) {      if ((!$uhome) || ($uhome eq 'no_host')) {
  &logthis("User $uname at $udom is unknown in authenticate");  # Maybe the machine was offline and only re-appeared again recently?
           &reconlonc();
   # One more
    my $uhome=&homeserver($uname,$udom,1);
    if ((!$uhome) || ($uhome eq 'no_host')) {
       &logthis("User $uname at $udom is unknown in authenticate");
    }
  return 'no_host';   return 'no_host';
     }      }
     my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);      my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
Line 621  sub homeserver { Line 646  sub homeserver {
  exists($badServerCache{$tryserver}));   exists($badServerCache{$tryserver}));
  if ($hostdom{$tryserver} eq $udom) {   if ($hostdom{$tryserver} eq $udom) {
            my $answer=reply("home:$udom:$uname",$tryserver);             my $answer=reply("home:$udom:$uname",$tryserver);
            if ($answer eq 'found') {              if ($answer eq 'found') {
                  delete($badServerCache{$tryserver}); 
        return $homecache{$index}=$tryserver;         return $homecache{$index}=$tryserver;
            } elsif ($answer eq 'no_host') {             } elsif ($answer eq 'no_host') {
        $badServerCache{$tryserver}=1;         $badServerCache{$tryserver}=1;
Line 740  sub put_dom { Line 766  sub put_dom {
     }      }
 }  }
   
   sub retrieve_inst_usertypes {
       my ($udom) = @_;
       my (%returnhash,@order);
       if (exists($domain_primary{$udom})) {
           my $uhome=$domain_primary{$udom};
           my $rep=&reply("inst_usertypes:$udom",$uhome);
           my ($hashitems,$orderitems) = split(/:/,$rep); 
           my @pairs=split(/\&/,$hashitems);
           foreach my $item (@pairs) {
               my ($key,$value)=split(/=/,$item,2);
               $key = &unescape($key);
               next if ($key =~ /^error: 2 /);
               $returnhash{$key}=&thaw_unescape($value);
           }
           my @esc_order = split(/\&/,$orderitems);
           foreach my $item (@esc_order) {
               push(@order,&unescape($item));
           }
       } else {
           &logthis("get_dom failed - no primary domain server for $udom");
       }
       return (\%returnhash,\@order);
   }
   
 # --------------------------------------------------- Assign a key to a student  # --------------------------------------------------- Assign a key to a student
   
 sub assign_access_key {  sub assign_access_key {
Line 1176  sub repcopy { Line 1226  sub repcopy {
     }      }
     $filename=~s/[\n\r]//g;      $filename=~s/[\n\r]//g;
     my $transname="$filename.in.transfer";      my $transname="$filename.in.transfer";
   # FIXME: this should flock
     if ((-e $filename) || (-e $transname)) { return 'ok'; }      if ((-e $filename) || (-e $transname)) { return 'ok'; }
     my $remoteurl=subscribe($filename);      my $remoteurl=subscribe($filename);
     if ($remoteurl =~ /^con_lost by/) {      if ($remoteurl =~ /^con_lost by/) {
Line 1424  sub store_edited_file { Line 1475  sub store_edited_file {
 }  }
   
 sub clean_filename {  sub clean_filename {
     my ($fname)=@_;      my ($fname,$args)=@_;
 # Replace Windows backslashes by forward slashes  # Replace Windows backslashes by forward slashes
     $fname=~s/\\/\//g;      $fname=~s/\\/\//g;
 # Get rid of everything but the actual filename      if (!$args->{'keep_path'}) {
     $fname=~s/^.*\/([^\/]+)$/$1/;          # Get rid of everything but the actual filename
    $fname=~s/^.*\/([^\/]+)$/$1/;
       }
 # Replace spaces by underscores  # Replace spaces by underscores
     $fname=~s/\s+/\_/g;      $fname=~s/\s+/\_/g;
 # Replace all other weird characters by nothing  # Replace all other weird characters by nothing
     $fname=~s/[^\w\.\-]//g;      $fname=~s{[^/\w\.\-]}{}g;
 # Replace all .\d. sequences with _\d. so they no longer look like version  # Replace all .\d. sequences with _\d. so they no longer look like version
 # numbers  # numbers
     $fname=~s/\.(\d+)(?=\.)/_$1/g;      $fname=~s/\.(\d+)(?=\.)/_$1/g;
Line 1998  sub get_course_adv_roles { Line 2051  sub get_course_adv_roles {
 }  }
   
 sub get_my_roles {  sub get_my_roles {
     my ($uname,$udom)=@_;      my ($uname,$udom,$types,$roles,$roledoms)=@_;
     unless (defined($uname)) { $uname=$env{'user.name'}; }      unless (defined($uname)) { $uname=$env{'user.name'}; }
     unless (defined($udom)) { $udom=$env{'user.domain'}; }      unless (defined($udom)) { $udom=$env{'user.domain'}; }
     my %dumphash=      my %dumphash=
Line 2008  sub get_my_roles { Line 2061  sub get_my_roles {
     foreach my $entry (keys(%dumphash)) {      foreach my $entry (keys(%dumphash)) {
  my ($tend,$tstart)=split(/\:/,$dumphash{$entry});   my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
         if (($tstart) && ($tstart<0)) { next; }          if (($tstart) && ($tstart<0)) { next; }
         if (($tend) && ($tend<$now)) { next; }          my $status = 'active';
         if (($tstart) && ($now<$tstart)) { next; }          if (($tend) && ($tend<$now)) {
               $status = 'previous';
           } 
           if (($tstart) && ($now<$tstart)) {
               $status = 'future';
           }
           if (ref($types) eq 'ARRAY') {
               if (!grep(/^\Q$status\E$/,@{$types})) {
                   next;
               } 
           } else {
               if ($status ne 'active') {
                   next;
               }
           }
         my ($role,$username,$domain,$section)=split(/\:/,$entry);          my ($role,$username,$domain,$section)=split(/\:/,$entry);
           if (ref($roledoms) eq 'ARRAY') {
               if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
                   next;
               }
           }
           if (ref($roles) eq 'ARRAY') {
               if (!grep(/^\Q$role\E$/,@{$roles})) {
                   next;
               }
           } 
  $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;   $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
      }      }
     return %returnhash;      return %returnhash;
 }  }
   
Line 5081  sub is_locked { Line 5158  sub is_locked {
   
 sub declutter_portfile {  sub declutter_portfile {
     my ($file) = @_;      my ($file) = @_;
     &logthis("got $file");      $file =~ s{^(/portfolio/|portfolio/)}{/};
     $file =~ s-^(/portfolio/|portfolio/)-/-;  
     &logthis("ret $file");  
     return $file;      return $file;
 }  }
   
Line 7034  sub setup_random_from_rndseed { Line 7109  sub setup_random_from_rndseed {
 }  }
   
 sub latest_receipt_algorithm_id {  sub latest_receipt_algorithm_id {
     return 'receipt2';      return 'receipt3';
 }  }
   
 sub recunique {  sub recunique {
     my $fucourseid=shift;      my $fucourseid=shift;
     my $unique;      my $unique;
     if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {      if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
    $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
  $unique=$env{"course.$fucourseid.internal.encseed"};   $unique=$env{"course.$fucourseid.internal.encseed"};
     } else {      } else {
  $unique=$perlvar{'lonReceipt'};   $unique=$perlvar{'lonReceipt'};
Line 7051  sub recunique { Line 7127  sub recunique {
 sub recprefix {  sub recprefix {
     my $fucourseid=shift;      my $fucourseid=shift;
     my $prefix;      my $prefix;
     if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {      if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
    $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
  $prefix=$env{"course.$fucourseid.internal.encpref"};   $prefix=$env{"course.$fucourseid.internal.encpref"};
     } else {      } else {
  $prefix=$perlvar{'lonHostID'};   $prefix=$perlvar{'lonHostID'};
Line 7061  sub recprefix { Line 7138  sub recprefix {
   
 sub ireceipt {  sub ireceipt {
     my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;      my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
   
       my $return =&recprefix($fucourseid).'-';
   
       if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
    $env{'request.state'} eq 'construct') {
    $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
    return $return;
       }
   
     my $cuname=unpack("%32C*",$funame);      my $cuname=unpack("%32C*",$funame);
     my $cudom=unpack("%32C*",$fudom);      my $cudom=unpack("%32C*",$fudom);
     my $cucourseid=unpack("%32C*",$fucourseid);      my $cucourseid=unpack("%32C*",$fucourseid);
     my $cusymb=unpack("%32C*",$fusymb);      my $cusymb=unpack("%32C*",$fusymb);
     my $cunique=&recunique($fucourseid);      my $cunique=&recunique($fucourseid);
     my $cpart=unpack("%32S*",$part);      my $cpart=unpack("%32S*",$part);
     my $return =&recprefix($fucourseid).'-';      if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
     if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||  
  $env{'request.state'} eq 'construct') {  
  #&logthis("doing receipt2  using parts $cpart, uname $cuname and udom $cudom gets  ".($cpart%$cuname)." and ".($cpart%$cudom));   #&logthis("doing receipt2  using parts $cpart, uname $cuname and udom $cudom gets  ".($cpart%$cuname)." and ".($cpart%$cudom));
                 
  $return.= ($cunique%$cuname+   $return.= ($cunique%$cuname+
Line 7158  sub repcopy_userfile { Line 7243  sub repcopy_userfile {
     if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }      if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
     my ($cdom,$cnum,$filename) =       my ($cdom,$cnum,$filename) = 
  ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);   ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
     my ($info,$rtncode);  
     my $uri="/uploaded/$cdom/$cnum/$filename";      my $uri="/uploaded/$cdom/$cnum/$filename";
     if (-e "$file") {      if (-e "$file") {
   # we already have a local copy, check it out
  my @fileinfo = stat($file);   my @fileinfo = stat($file);
    my $rtncode;
    my $info;
  my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);   my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
  if ($lwpresp ne 'ok') {   if ($lwpresp ne 'ok') {
   # there is no such file anymore, even though we had a local copy
     if ($rtncode eq '404') {      if ($rtncode eq '404') {
  unlink($file);   unlink($file);
     }      }
     #my $ua=new LWP::UserAgent;  
     #my $request=new HTTP::Request('GET',&tokenwrapper($uri));  
     #my $response=$ua->request($request);  
     #if ($response->is_success()) {  
  # return $response->content;  
  #    } else {  
  # return -1;  
  #    }  
     return -1;      return -1;
  }   }
  if ($info < $fileinfo[9]) {   if ($info < $fileinfo[9]) {
   # nice, the file we have is up-to-date, just say okay
     return 'ok';      return 'ok';
    } else {
   # the file is outdated, get rid of it
       unlink($file);
  }   }
  $info = '';      }
  $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);  # one way or the other, at this point, we don't have the file
  if ($lwpresp ne 'ok') {  # construct the correct path for the file
     return -1;      my @parts = ($cdom,$cnum); 
  }      if ($filename =~ m|^(.+)/[^/]+$|) {
     } else {   push @parts, split(/\//,$1);
  my $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);      }
  if ($lwpresp ne 'ok') {      my $path = $perlvar{'lonDocRoot'}.'/userfiles';
     my $ua=new LWP::UserAgent;      foreach my $part (@parts) {
     my $request=new HTTP::Request('GET',&tokenwrapper($uri));   $path .= '/'.$part;
     # FIXME, right reads everything into memory then writes it out   if (!-e $path) {
     # doing something like      mkdir($path,0770);
     #    my $response=$ua->request($request,$file);  
     # would make this write directly to disk  
     my $response=$ua->request($request);  
     if ($response->is_success()) {  
  $info=$response->content;  
     } else {  
  return -1;  
     }  
  }  
  my @parts = ($cdom,$cnum);   
  if ($filename =~ m|^(.+)/[^/]+$|) {  
     push @parts, split(/\//,$1);  
  }  
  my $path = $perlvar{'lonDocRoot'}.'/userfiles';  
  foreach my $part (@parts) {  
     $path .= '/'.$part;  
     if (!-e $path) {  
  mkdir($path,0770);  
     }  
  }   }
     }      }
     open(FILE,">$file");  # now the path exists for sure
     print FILE $info;  # get a user agent
     close(FILE);      my $ua=new LWP::UserAgent;
       my $transferfile=$file.'.in.transfer';
   # FIXME: this should flock
       if (-e $transferfile) { return 'ok'; }
       my $request;
       $uri=~s/^\///;
       $request=new HTTP::Request('GET','http://'.$hostname{&homeserver($cnum,$cdom)}.'/raw/'.$uri);
       my $response=$ua->request($request,$transferfile);
   # did it work?
       if ($response->is_error()) {
    unlink($transferfile);
    &logthis("Userfile repcopy failed for $uri");
    return -1;
       }
   # worked, rename the transfer file
       rename($transferfile,$file);
     return 'ok';      return 'ok';
 }  }
   
Line 7237  sub tokenwrapper { Line 7317  sub tokenwrapper {
     }      }
 }  }
   
   # call with reqtype HEAD: get last modification time
   # call with reqtype GET: get the file contents
   # Do not call this with reqtype GET for large files! It loads everything into memory
   #
 sub getuploaded {  sub getuploaded {
     my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;      my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
     $uri=~s/^\///;      $uri=~s/^\///;
Line 7919  and course level Line 8003  and course level
 plaintext($short) : return value in %prp hash (rolesplain.tab); plain text  plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
 explanation of a user role term  explanation of a user role term
   
   =item *
   
   get_my_roles($uname,$udom,$types,$roles,$roledoms) : All arguments are
   optional.  Returns a hash of a user's roles, with keys set to
   colon-sparated $uname,$udom,and $role, and value set to
   colon-separated start and end times for the role. If no username and
   domain are specified, will default to current user/domain. Types,
   roles, and roledoms are references to arrays, of role statuses
   (active, future or previous), roles (e.g., cc,in, st etc.) and domains
   of the roles which can be used to restrict the list if roles
   reported. If no array ref is provided for types, will default to
   return only active roles.
   
 =back  =back
   
 =head2 User Modification  =head2 User Modification
Removed from v.1.827  
changed lines
  Added in v.1.837

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