version 1.30, 2002/05/24 16:48:50
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version 1.43, 2004/01/29 18:46:25
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Line 37 $Apache::run::EVALUATE_STRING=<<'ENDEVAL
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Line 37 $Apache::run::EVALUATE_STRING=<<'ENDEVAL
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ENDEVALUATE |
ENDEVALUATE |
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sub evaluate { |
sub evaluate { |
my ($expression,$safeeval,$decls) = @_; |
my ($expression,$safeeval,$decls) = @_; |
unless (defined($expression)) { return ''; } |
unless (defined($expression)) { return ''; } |
if (!$Apache::lonxml::evaluate) { return $expression; } |
if ($Apache::lonxml::evaluate < 1) { return $expression; } |
my $result = ''; |
my $result = ''; |
$@=''; |
$@=''; |
if ($Apache::lonxml::request) { |
$Apache::run::timeout=0; |
$Apache::lonxml::request->hard_timeout("Apache::run::run, evaluation $code"); |
$main::SIG{'ALRM'} = sub { |
} |
$Apache::run::timeout=1; |
$safeeval->reval('{'.$decls.';$_=<<\'EXPRESSION\';'."\n".$expression. |
die("timeout"); |
"\n".'EXPRESSION'."\n".$EVALUATE_STRING.'}'); |
}; |
if ($Apache::lonxml::request) { $Apache::lonxml::request->kill_timeout; } |
my $innererror; |
# $safeeval->reval('{'.$decls.';<< &evaluate(q|'.$expression.'|);}'); |
eval { |
my $error=$@; |
alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); |
if ($@ eq '') { |
$safeeval->reval('{'.$decls.';$_=<<\'EXPRESSION\';'."\n".$expression. |
$result = $safeeval->reval('return $_;'); |
"\n".'EXPRESSION'."\n".$EVALUATE_STRING.'}'); |
chomp $result; |
$innererror=$@; |
} else { |
alarm(0); |
&Apache::lonxml::error('substitution on <pre>'.$expression. |
}; |
'</pre> with <pre>'.$decls. |
my $error=$@; |
'</pre> caused <pre>'.$error); |
if ($error eq '' && $innererror eq '' && !$Apache::run::timeout) { |
} |
$result = $safeeval->reval('return $_;'); |
return $result |
chomp $result; |
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} else { |
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if ($Apache::run::timeout) { |
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$error = 'Code ran too long. It ran for more than '. |
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$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds'; |
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} |
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&Apache::lonxml::error('substitution on <pre>'. |
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&HTML::Entities::encode($expression). |
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'</pre> with <pre>'. |
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&HTML::Entities::encode($decls). |
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'</pre> caused <pre>'. |
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&HTML::Entities::encode($error).' '. |
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&HTML::Entities::encode($innererror). |
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'</pre>'); |
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} |
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return $result |
} |
} |
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sub run { |
sub run { |
my ($code,$safeeval,$hideerrors) = @_; |
my ($code,$safeeval,$hideerrors) = @_; |
# print "inside run\n"; |
my @result; |
$@=''; |
$@=''; |
if ($Apache::lonxml::request) { |
$Apache::run::timeout=0; |
$Apache::lonxml::request->hard_timeout("Apache::run::run, evaluation $code"); |
$main::SIG{'ALRM'} = sub { |
} |
$Apache::run::timeout=1; |
my (@result)=$safeeval->reval($code); |
die("timeout"); |
if ($Apache::lonxml::request) { $Apache::lonxml::request->kill_timeout; } |
}; |
my $error=$@; |
my $innererror; |
if ($error ne '' && !$hideerrors) { |
eval { |
&Apache::lonxml::error('<pre>'.&HTML::Entities::encode($error). |
alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); |
'</pre> occured while running <pre>'. |
@result=$safeeval->reval($code); |
&HTML::Entities::encode($code).'</pre>'); |
$innererror=$@; |
} |
alarm(0); |
if ( $#result < '1') { |
}; |
return $result[0]; |
my $error=$@; |
} else { |
if (($Apache::run::timeout || $error ne '' || $innererror ne '') && !$hideerrors) { |
&Apache::lonxml::debug("<b>Got lots results</b>:$#result:"); |
if ($Apache::run::timeout) { |
return (@result); |
$error = 'Code ran too long. It ran for more than '. |
} |
$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds'; |
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} |
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my $errormsg='<pre>'.&HTML::Entities::encode($error).' '. |
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&HTML::Entities::encode($innererror). |
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'</pre> occured while running <pre>'; |
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$code=&HTML::Entities::encode($code); |
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if ($innererror=~/line (\d+)/) { |
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my $linenumber=$1; |
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my @code=split("\n",$code); |
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$code[$linenumber-1]='<b><font color="red">'. |
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$code[$linenumber-1].'</font></b>'; |
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$code=join("\n",@code); |
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} |
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&Apache::lonxml::error($errormsg.$code.'</pre>'); |
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} |
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if ( $#result < '1') { |
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return $result[0]; |
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} else { |
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&Apache::lonxml::debug("<b>Got lots results</b>:$#result:"); |
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return (@result); |
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} |
} |
} |
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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!~/^\_/) && ($symname!~/\:$/)) { |
my $line; |
my $line; |
if ($safeeval->reval('defined($'.$symname.')')) { |
if ($safeeval->reval('defined($'.$symname.')')) { |
$line='$'.$symname.'='.$safeeval->reval('$'.$symname); |
$line='$'.$symname.'='.$safeeval->reval('$'.$symname); |
} |
} |
if ($safeeval->reval('defined(@'.$symname.')')) { |
if ($safeeval->reval('defined(@'.$symname.')')) { |
$line='@'.$symname.'=('. |
$line='@'.$symname.'=('. |
$safeeval->reval('join(",",@'.$symname.')').")"; |
$safeeval->reval('join(",",@'.$symname.')').")"; |
} |
} |
if ($safeeval->reval('defined(%'.$symname.')')) { |
if ($safeeval->reval('defined(%'.$symname.')')) { |
$line='%'.$symname.'=('; |
$line='%'.$symname.'=('; |
$line.=$safeeval->reval('join(",",map { $_."=>".$'. |
$line.=$safeeval->reval('join(",",map { $_."=>".$'. |
$symname.'{$_} } sort keys %'. |
$symname.'{$_} } sort keys %'. |
$symname.')').")" |
$symname.')').")" |
} |
} |
if ($line ne '') { $dump.=&HTML::Entities::encode($line)."<br />\n"; } |
if ($line ne '') {$dump.=&HTML::Entities::encode($line)."<br />";} |
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} |
} |
} |
} |
$dump.=''; |
$dump.=''; |
return $dump; |
return $dump; |
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} |
} |
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1; |
1; |