version 1.49, 2004/08/10 19:16:40
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version 1.65, 2019/11/10 20:40:59
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Line 26 package Apache::run;
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Line 26 package Apache::run;
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# |
# |
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use HTML::Entities; |
use HTML::Entities; |
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use Apache::lonlocal; |
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$Apache::run::EVALUATE_STRING=<<'ENDEVALUATE'; |
$Apache::run::EVALUATE_STRING=<<'ENDEVALUATE'; |
my %_LONCAPA_INTERNAL_oldexpressions=(); |
my %_LONCAPA_INTERNAL_oldexpressions=(); |
Line 50 while (!$_LONCAPA_INTERNAL_oldexpression
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Line 51 while (!$_LONCAPA_INTERNAL_oldexpression
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my $__LC__prefix; |
my $__LC__prefix; |
my $__LC__result; |
my $__LC__result; |
while (1) { |
while (1) { |
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if ($__LC__a =~ m-^&(theta|pi|rho)$-) { last; } |
{ |
{ |
use strict; |
use strict; |
no strict "vars"; |
no strict "vars"; |
Line 77 sub evaluate {
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Line 79 sub evaluate {
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my $result = ''; |
my $result = ''; |
$@=''; |
$@=''; |
$Apache::run::timeout=0; |
$Apache::run::timeout=0; |
$main::SIG{'ALRM'} = sub { |
local $main::SIG{'ALRM'} = sub { |
$Apache::run::timeout=1; |
$Apache::run::timeout=1; |
die("timeout"); |
die("timeout"); |
}; |
}; |
my $innererror; |
my $innererror; |
eval { |
eval { |
alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); |
&Apache::lonxml::start_alarm(); |
$safeeval->reval('{'.$decls.';$_=<<\'EXPRESSION\';'."\n".$expression. |
$safeeval->reval('{'.$decls.';$_=<<\'EXPRESSION\';'."\n".$expression. |
"\n".'EXPRESSION'."\n".$EVALUATE_STRING.'}'); |
"\n".'EXPRESSION'."\n".$EVALUATE_STRING.'}'); |
$innererror=$@; |
$innererror=$@; |
alarm(0); |
&Apache::lonxml::end_alarm(); |
}; |
}; |
my $error=$@; |
my $error=$@; |
if ($error eq '' && $innererror eq '' && !$Apache::run::timeout) { |
if ($error eq '' && $innererror eq '' && !$Apache::run::timeout) { |
$result = $safeeval->reval('return $_;'); |
$result = $safeeval->reval('return $_;'); |
chomp $result; |
chomp $result; |
} else { |
} else { |
if ($Apache::run::timeout) { |
if ($Apache::run::timeout) { |
$error = 'Code ran too long. It ran for more than '. |
$error = |
$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds'; |
&mt('Code ran too long. It ran for more than [_1] seconds.', |
} |
$Apache::lonnet::perlvar{'lonScriptTimeout'}); |
&Apache::lonxml::error('substitution on <pre>'. |
} |
&HTML::Entities::encode($expression,'<>&"'). |
&Apache::lonxml::error( |
'</pre> with <pre>'. |
&mt('Substitution on [_1] with [_2] caused:', |
&HTML::Entities::encode($decls,'<>&"'). |
'<pre>'. &HTML::Entities::encode($expression,'<>&"').'</pre>', |
'</pre> caused <pre>'. |
'<pre>'.&HTML::Entities::encode($decls,'<>&"').'</pre>') |
&HTML::Entities::encode($error,'<>&"').' '. |
.'<br />' |
&HTML::Entities::encode($innererror,'<>&"'). |
.'<pre>'.&HTML::Entities::encode($error,'<>&"').' ' |
'</pre>'); |
.&HTML::Entities::encode($innererror,'<>&"').'</pre>'); |
} |
} |
return $result |
return $result; |
} |
} |
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sub run { |
sub run { |
Line 115 sub run {
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Line 117 sub run {
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my @result; |
my @result; |
$@=''; |
$@=''; |
$Apache::run::timeout=0; |
$Apache::run::timeout=0; |
$main::SIG{'ALRM'} = sub { |
local $main::SIG{'ALRM'} = sub { |
$Apache::run::timeout=1; |
$Apache::run::timeout=1; |
die("timeout"); |
die("timeout"); |
}; |
}; |
my $innererror; |
my $innererror; |
eval { |
eval { |
alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); |
&Apache::lonxml::start_alarm(); |
@result=$safeeval->reval($code); |
@result=$safeeval->reval($code); |
$innererror=$@; |
$innererror=$@; |
alarm(0); |
&Apache::lonxml::end_alarm(); |
}; |
}; |
my $error=$@; |
my $error=$@; |
if (($Apache::run::timeout || $error ne '' || $innererror ne '') && !$hideerrors) { |
if (($Apache::run::timeout || $error ne '' || $innererror ne '') && !$hideerrors) { |
if ($Apache::run::timeout) { |
if ($Apache::run::timeout) { |
$error = 'Code ran too long. It ran for more than '. |
$error = &mt('Code ran too long. It ran for more than [_1] seconds.', |
$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds'; |
$Apache::lonnet::perlvar{'lonScriptTimeout'}); |
} |
} |
my $errormsg='<pre>'.&HTML::Entities::encode($error,'<>&"').' '. |
$code=&HTML::Entities::encode($code,'<>&"'); |
&HTML::Entities::encode($innererror,'<>&"'). |
if ($innererror=~/line (\d+)/) { |
'</pre> occured while running <pre>'; |
my $linenumber=$1; |
$code=&HTML::Entities::encode($code,'<>&"'); |
my @code=split("\n",$code); |
if ($innererror=~/line (\d+)/) { |
if ($linenumber < scalar(@code)) { |
my $linenumber=$1; |
$code[$linenumber-1]= |
my @code=split("\n",$code); |
'<span style="color:red;font-weight:bold;">'. |
$code[$linenumber-1]='<b><font color="red">'. |
$code[$linenumber-1].'</span>'; |
$code[$linenumber-1].'</font></b>'; |
} |
$code=join("\n",@code); |
$code=join("\n",@code); |
} |
} |
&Apache::lonxml::error($errormsg.$code.'</pre>'); |
&Apache::lonxml::error( |
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'<pre>'.&HTML::Entities::encode($error,'<>&"').' '. |
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&HTML::Entities::encode($innererror,'<>&"'). |
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'</pre>' |
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.&mt('This occurred while running: [_1]', |
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'<pre>'.$code.'</pre>')); |
} |
} |
if ( $#result < '1') { |
if ( $#result < '1') { |
return $result[0]; |
return $result[0]; |
Line 156 sub run {
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Line 163 sub run {
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sub dump { |
sub dump { |
my ($target,$safeeval)=@_; |
my ($target,$safeeval)=@_; |
my $dump=''; |
my $dump=''; |
foreach my $symname (sort keys %{$safeeval->varglob('main::')}) { |
foreach my $symname (sort(keys(%{$safeeval->varglob('main::')}))) { |
if (($symname!~/^\_/) && ($symname!~/\:$/)) { |
if (($symname!~ /^(INC|SIG)/) && ($symname!~/\027/) && ($symname!~/\022/) && |
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($symname!~/^\_/) && ($symname!~/\:$/) && ($symname ne '!')) { |
my $line; |
my $line; |
if ($safeeval->reval('defined($'.$symname.')')) { |
if ($safeeval->reval('defined($'.$symname.')')) { |
$line.='$'.$symname.'='.$safeeval->reval('$'.$symname)."\n"; |
if ($symname =~ /^\w/) { |
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$line.='$'.$symname.'='.$safeeval->reval('$'.$symname)."\n"; |
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} |
} |
} |
if ($safeeval->reval('defined(@'.$symname.')')) { |
if ($safeeval->reval('@'.$symname)) { |
$line.='@'.$symname.'=('. |
$line.='@'.$symname.'=('. |
$safeeval->reval('join(",",@'.$symname.')').")"."\n"; |
$safeeval->reval('join(",",@'.$symname.')').")"."\n"; |
} |
} |
if ($safeeval->reval('defined(%'.$symname.')')) { |
if ($safeeval->reval('%'.$symname)) { |
$line.='%'.$symname.'=('; |
$line.='%'.$symname.'=('; |
$line.=$safeeval->reval('join(",",map { $_."=>".$'. |
$line.=$safeeval->reval('join(",",map { $_."=>".$'. |
$symname.'{$_} } sort keys %'. |
$symname.'{$_} } sort(keys(%'. |
$symname.')').")"."\n" |
$symname.')))').")"."\n"; |
} |
} |
if ($line ne '') { |
if ($line ne '') { |
$line=&HTML::Entities::encode($line,'<>&"'); |
$line=&HTML::Entities::encode($line,'<>&"'); |
$line=~s|\n|<br />|; |
$line=~s|\n|<br />|g; |
$dump.=$line; |
$dump.=$line; |
} |
} |
} |
} |
Line 185 sub dump {
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Line 195 sub dump {
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1; |
1; |
__END__; |
__END__; |
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=pod |
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=head1 NAME |
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Apache::run.pm |
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=head1 SYNOPSIS |
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Used to prevent poorly written problems from |
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causing lingering after effects |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 NOTABLE SUBROUTINES |
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=over |
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=item run(), dump(), evaluate() |
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=back |
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=cut |
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