version 1.46, 2004/03/31 05:24:00
|
version 1.62, 2013/12/04 15:57:15
|
Line 26 package Apache::run;
|
Line 26 package Apache::run;
|
# |
# |
|
|
use HTML::Entities; |
use HTML::Entities; |
|
use Apache::lonlocal; |
|
|
$Apache::run::EVALUATE_STRING=<<'ENDEVALUATE'; |
$Apache::run::EVALUATE_STRING=<<'ENDEVALUATE'; |
my %_LONCAPA_INTERNAL_oldexpressions=(); |
my %_LONCAPA_INTERNAL_oldexpressions=(); |
Line 46 while (!$_LONCAPA_INTERNAL_oldexpression
|
Line 47 while (!$_LONCAPA_INTERNAL_oldexpression
|
# only match the above if there is not { [ ( coming up |
# only match the above if there is not { [ ( coming up |
# Why? (I.e. this fails &a(1)[2] |
# Why? (I.e. this fails &a(1)[2] |
(?=[^\[\{\(]|$)/ |
(?=[^\[\{\(]|$)/ |
&__LC_INTERNAL_EVALUATE__($1,$2,$3)/sexg; |
my ($__LC__a,$__LC__b,$__LC__c)=($1,$2,$3); |
|
my $__LC__prefix; |
|
my $__LC__result; |
|
while (1) { |
|
if ($__LC__a =~ m-^&(theta|pi|rho)$-) { last; } |
|
{ |
|
use strict; |
|
no strict "vars"; |
|
if (eval(defined(eval($__LC__a.$__LC__b)))) { |
|
$__LC__result= $__LC__prefix.eval($__LC__a.$__LC__b.$__LC__c); |
|
last; |
|
} |
|
} |
|
$__LC__prefix.=substr($__LC__a,0,1,""); |
|
if ($__LC__a!~m-^(\$|&|\#)-) { last; } |
|
} |
|
if (!defined($__LC__result)) { |
|
$__LC__result=$__LC__prefix.$__LC__a.$__LC__b.$__LC__c; |
|
} |
|
$__LC__result; |
|
/sexg; |
if (scalar(values(%_LONCAPA_INTERNAL_oldexpressions))>10) {last;} |
if (scalar(values(%_LONCAPA_INTERNAL_oldexpressions))>10) {last;} |
} |
} |
ENDEVALUATE |
ENDEVALUATE |
Line 58 sub evaluate {
|
Line 79 sub evaluate {
|
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; |
} |
} |
|
|
sub run { |
sub run { |
Line 96 sub run {
|
Line 117 sub run {
|
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.$code.'</pre>'); |
&Apache::lonxml::error( |
|
'<pre>'.&HTML::Entities::encode($error,'<>&"').' '. |
|
&HTML::Entities::encode($innererror,'<>&"'). |
|
'</pre>' |
|
.&mt('This occurred while running: [_1]', |
|
'<pre>'.$code.'</pre>')); |
} |
} |
if ( $#result < '1') { |
if ( $#result < '1') { |
return $result[0]; |
return $result[0]; |
Line 138 sub dump {
|
Line 164 sub dump {
|
my ($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!~/^\_/) && ($symname!~/\:$/)) { |
my $line; |
my $line; |
if ($safeeval->reval('defined($'.$symname.')')) { |
if ($safeeval->reval('defined($'.$symname.')')) { |
$line='$'.$symname.'='.$safeeval->reval('$'.$symname); |
if ($symname =~ /^\w/) { |
|
$line.='$'.$symname.'='.$safeeval->reval('$'.$symname)."\n"; |
|
} |
} |
} |
if ($safeeval->reval('defined(@'.$symname.')')) { |
if ($safeeval->reval('@'.$symname)) { |
$line='@'.$symname.'=('. |
$line.='@'.$symname.'=('. |
$safeeval->reval('join(",",@'.$symname.')').")"; |
$safeeval->reval('join(",",@'.$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.')').")" |
$symname.')').")"."\n"; |
} |
} |
if ($line ne '') {$dump.=&HTML::Entities::encode($line,'<>&"')."<br />";} |
if ($line ne '') { |
|
$line=&HTML::Entities::encode($line,'<>&"'); |
|
$line=~s|\n|<br />|g; |
|
$dump.=$line; |
|
} |
} |
} |
} |
} |
$dump.=''; |
$dump.=''; |
Line 162 sub dump {
|
Line 195 sub dump {
|
|
|
1; |
1; |
__END__; |
__END__; |
|
|
|
=pod |
|
|
|
=head1 NAME |
|
|
|
Apache::run.pm |
|
|
|
=head1 SYNOPSIS |
|
|
|
Used to prevent poorly written problems from |
|
causing lingering after effects |
|
|
|
This is part of the LearningOnline Network with CAPA project |
|
described at http://www.lon-capa.org. |
|
|
|
|
|
=head1 NOTABLE SUBROUTINES |
|
|
|
=over |
|
|
|
=item run(), dump(), evaluate() |
|
|
|
=back |
|
|
|
=cut |
|
|