{"id":32,"date":"2008-07-23T16:38:58","date_gmt":"2008-07-23T21:38:58","guid":{"rendered":"http:\/\/factormystic.net\/blog\/?p=32"},"modified":"2009-03-04T00:26:38","modified_gmt":"2009-03-04T05:26:38","slug":"how-to-run-ruby-scripts-in-a-browser-without-mod_ruby","status":"publish","type":"post","link":"https:\/\/factormystic.net\/blog\/how-to-run-ruby-scripts-in-a-browser-without-mod_ruby","title":{"rendered":"How to run Ruby scripts in a browser without mod_ruby"},"content":{"rendered":"

I’m sure this is a horror in dozens of ways, but eruby sucks and my host doesn’t have mod_ruby. So I got creative.<\/p>\n

The .htaccess rewrites requests for any file ending in .rb to this handler.php, which confirms that the requested ruby script exists, then executes it and prints the result.<\/p>\n

[sourcecode language=”php”]
\n\/\/PHP script to execute ruby scripts when the host doesn’t have a cgi handler for .rb
\n\/\/Use with this .htaccess:<\/p>\n

\/*
\nOptions +FollowSymlinks
\nRewriteEngine on
\nRewriteRule ^(.*)\\.rb$ handler.php?rb=$1.rb [NC,QSA]
\n*\/<\/p>\n

$file = $_GET[‘rb’];<\/p>\n

if(in_array($file, scandir(‘.’)))
\n{
\nforeach($_REQUEST as $key=>$value) if($key != ‘rb’) $args .= ” $key=”.urlencode($value);
\necho exec(escapeshellcmd(‘.\/’.$file.$args));
\n}
\nelse
\n{
\necho ‘404- Page not found’;
\n}
\n?>
\n[\/sourcecode]
\nHere’s an example ruby script using this hack- nothing special to do here at all:<\/p>\n

[sourcecode language=”ruby”]
\n#!\/usr\/local\/bin\/ruby<\/p>\n

require ‘cgi’<\/p>\n

print “Hello from Ruby!
”
\nprint “All of the input variables:<\/p>\n

\n

”<\/p>\n

ARGV.each do |arg|
\nprint CGI::unescape(arg.to_s)
\nprint “
”
\nend
\n[\/sourcecode]<\/p>\n

All the GET, POST, and COOKIE variables are at your fingertips in ARGV! (You could get them with Ruby’s CGI module as well.)<\/p>\n

So here’s what it looks like to users:<\/p>\n

\"Screenshot<\/a>

Screenshot of ruby without mod_ruby hack<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

I’m sure this is a horror in dozens of ways, but eruby sucks and my host doesn’t have mod_ruby. So I got creative. The .htaccess rewrites requests for any file ending in .rb to this handler.php, which confirms that the requested ruby script exists, then executes it and prints the result. [sourcecode language=”php”] \/\/PHP script […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,14,13,12],"tags":[],"class_list":["post-32","post","type-post","status-publish","format-standard","hentry","category-htaccess","category-php","category-ruby","category-web-stuff"],"_links":{"self":[{"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/posts\/32","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/comments?post=32"}],"version-history":[{"count":5,"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/posts\/32\/revisions"}],"predecessor-version":[{"id":37,"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/posts\/32\/revisions\/37"}],"wp:attachment":[{"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/media?parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/categories?post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/factormystic.net\/blog\/wp-json\/wp\/v2\/tags?post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}