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#!/usr/local/bin/perl
$SCRIPT_NAME = $ENV{'SCRIPT_NAME'} || $0;
$CGI = "file://$SCRIPT_NAME?";
if ($ENV{'QUERY_STRING'}) {
$file = $ENV{'QUERY_STRING'};
} else {
$file = $ARGV[0];
}
$file = &cleanup($file);
if (-d $file) {
print <<EOF;
Location: file:$file
EOF
exit;
}
if (! open(FILE, "< $file")) {
$file = &html_quote($file);
$_ = "$file: " . &html_quote($!);
print <<EOF;
Content-Type: text/html
<head><title>$file</title></head>
<b>$_</b>
EOF
exit 1;
}
$file = &html_quote($file);
($dir = $file) =~ s@[^/]*$@@;
print <<EOF;
Content-Type: text/html
<head><title>$file</title></head>
<pre>
EOF
while (<FILE>) {
$_ = &html_quote($_);
s/^(\#\s*include\s+)(\".*\"|\<\;.*\>\;)/$1 . &header_ref($2)/ge;
print;
}
close(FILE);
print "</pre>\n";
sub header_ref {
local($_) = @_;
local($d);
if (s/^\"//) {
s/\"$//;
return ""<a href=\"$CGI$dir$_\">$_</a>"";
}
s/^\<\;//;
s/\>\;$//;
for $d (
"/usr/include",
"/usr/local/include",
"/usr/X11R6/include",
"/usr/X11/include",
"/usr/X/include",
"/usr/include/X11"
) {
-f "$d/$_" && return "<<a href=\"$CGI$d/$_\">$_</a>>";
}
return $_;
}
sub html_quote {
local($_) = @_;
local(%QUOTE) = (
'<', '<',
'>', '>',
'&', '&',
'"', '"',
);
s/[<>&"]/$QUOTE{$&}/g;
return $_;
}
sub cleanup {
local($_) = @_;
s@//+@/@g;
s@/\./@/@g;
while(m@/\.\./@) {
s@^/(\.\./)+@/@;
s@/[^/]+/\.\./@/@;
}
return $_;
}
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