Diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/mod_http_files.lua	Mon Apr 23 23:37:43 2012 +0200
@@ -0,0 +1,86 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+module:depends("http");
+local lfs = require "lfs";
+
+local open = io.open;
+local stat = lfs.attributes;
+
+local http_base = module:get_option_string("http_path", "www_files");
+
+local response_400 = "<h1>Bad Request</h1>Sorry, we didn't understand your request :(";
+local response_403 = "<h1>Forbidden</h1>You don't have permission to view the contents of this directory :(";
+local response_404 = "<h1>Page Not Found</h1>Sorry, we couldn't find what you were looking for :(";
+
+-- TODO: Should we read this from /etc/mime.types if it exists? (startup time...?)
+local mime_map = {
+	html = "text/html";
+	htm = "text/html";
+	xml = "text/xml";
+	xsl = "text/xml";
+	txt = "text/plain; charset=utf-8";
+	js = "text/javascript";
+	css = "text/css";
+};
+
+local function preprocess_path(path)
+	if path:sub(1,1) ~= "/" then
+		path = "/"..path;
+	end
+	local level = 0;
+	for component in path:gmatch("([^/]+)/") do
+		if component == ".." then
+			level = level - 1;
+		elseif component ~= "." then
+			level = level + 1;
+		end
+		if level < 0 then
+			return nil;
+		end
+	end
+	return path;
+end
+
+function serve_file(request, path)
+	local response = request.response;
+	path = path and preprocess_path(path);
+	if not path then
+		response.status = 400;
+		return response:send(response_400);
+	end
+	local full_path = http_base..path;
+	if stat(full_path, "mode") == "directory" then
+		if stat(full_path.."/index.html", "mode") == "file" then
+			return serve_file(request, path.."/index.html");
+		end
+		response.status = 403;
+		return response:send(response_403);
+	end
+	local f, err = open(full_path, "rb");
+	if not f then
+		response.status = 404;
+		return response:send(response_404.."<br/>"..tostring(err));
+	end
+	local data = f:read("*a");
+	f:close();
+	if not data then
+		response.status = 403;
+		return response:send(response_403);
+	end
+	local ext = path:match("%.([^.]*)$");
+	response.headers.content_type = mime_map[ext]; -- Content-Type should be nil when not known
+	return response:send(data);
+end
+
+module:provides("http", {
+	route = {
+		["/*"] = serve_file;
+	};
+});
+