* libs/httpd: added ETag, Date, Content-Type and Last-Modified header support to...

[project/luci.git] / libs / httpd / luasrc / httpd / handler / file.lua

diff --git a/libs/httpd/luasrc/httpd/handler/file.lua b/libs/httpd/luasrc/httpd/handler/file.lua
index 8d75edc..e6311e8 100644 (file)
--- a/libs/httpd/luasrc/httpd/handler/file.lua
+++ b/libs/httpd/luasrc/httpd/handler/file.lua
@@ -1,38 +1,77 @@
+--[[
+
+HTTP server implementation for LuCI - luci handler
+(c) 2008 Steven Barth <steven@midlink.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+$Id$
+
+]]--
+
 module("luci.httpd.handler.file", package.seeall)
+
 require("luci.httpd.module")
+require("luci.http.protocol.date")
+require("luci.http.protocol.mime")
 require("luci.fs")
 require("ltn12")
 
 Simple = luci.util.class(luci.httpd.module.Handler)
 Response = luci.httpd.module.Response
 
-function Simple.__init__(self, docroot)
+function Simple.__init__(self, docroot, dirlist)
        luci.httpd.module.Handler.__init__(self)
        self.docroot = docroot
+       self.dirlist = dirlist and true or false
+       self.mime    = luci.http.protocol.mime
+       self.date    = luci.http.protocol.date
 end
 
 function Simple.getfile(self, uri)
        local file = self.docroot .. uri:gsub("%.%./", "")
        local stat = luci.fs.stat(file)
-       
+
        return file, stat
 end
 
+
+function Simple._mk_etag(self, stat)
+       return string.format( "%x-%x-%x", stat.ino, stat.size, stat.mtime )
+end
+
+function Simple._cmp_etag(self, stat, etag)
+       return ( self:_mk_etag(stat) == etag )
+end
+
+
 function Simple.handle_get(self, request, sourcein, sinkerr)
        local file, stat = self:getfile(request.env.PATH_INFO)
 
        if stat then
                if stat.type == "regular" then
-                       return Response(200, {["Content-Length"] = stat.size}), ltn12.source.file(io.open(file))
+                       return Response(
+                               200, {
+                                       ["Date"]           = self.date.to_http( os.time() );
+                                       ["Last-Modified"]  = self.date.to_http( stat.mtime );
+                                       ["Content-Type"]   = self.mime.to_mime( file );
+                                       ["Content-Length"] = stat.size;
+                                       ["ETag"]           = self:_mk_etag( stat );
+                               }
+                       ), ltn12.source.file(io.open(file))
                else
-                       return self:failure(403, "Unable to transmit " .. stat.type .. " " .. request.env.PATH_INFO)
+                       return self:failure(403, "Unable to transmit " .. stat.type .. " " .. file)
                end
        else
-               return self:failure(404, "No such file: " .. uri)
+               return self:failure(404, "No such file: " .. file)
        end
 end
 
 function Simple.handle_head(self, ...)
        local response, sourceout = self:handle_get(...)
        return response
-end
\ No newline at end of file
+end