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Diffstat (limited to 'modules/base/luasrc/http/protocol/conditionals.lua')
| -rw-r--r-- | modules/base/luasrc/http/protocol/conditionals.lua | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/modules/base/luasrc/http/protocol/conditionals.lua b/modules/base/luasrc/http/protocol/conditionals.lua deleted file mode 100644 index 75e1f7b37c..0000000000 --- a/modules/base/luasrc/http/protocol/conditionals.lua +++ /dev/null @@ -1,153 +0,0 @@ ---[[ - -HTTP protocol implementation for LuCI - RFC2616 / 14.19, 14.24 - 14.28 -(c) 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net> - -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 - -$Id$ - -]]-- - ---- LuCI http protocol implementation - HTTP/1.1 bits. --- This class provides basic ETag handling and implements most of the --- conditional HTTP/1.1 headers specified in RFC2616 Sct. 14.24 - 14.28 . -module("luci.http.protocol.conditionals", package.seeall) - -local date = require("luci.http.protocol.date") - - ---- Implement 14.19 / ETag. --- @param stat A file.stat structure --- @return String containing the generated tag suitable for ETag headers -function mk_etag( stat ) - if stat ~= nil then - return string.format( '"%x-%x-%x"', stat.ino, stat.size, stat.mtime ) - end -end - ---- 14.24 / If-Match --- Test whether the given message object contains an "If-Match" header and --- compare it against the given stat object. --- @param req HTTP request message object --- @param stat A file.stat object --- @return Boolean indicating whether the precondition is ok --- @return Alternative status code if the precondition failed -function if_match( req, stat ) - local h = req.headers - local etag = mk_etag( stat ) - - -- Check for matching resource - if type(h['If-Match']) == "string" then - for ent in h['If-Match']:gmatch("([^, ]+)") do - if ( ent == '*' or ent == etag ) and stat ~= nil then - return true - end - end - - return false, 412 - end - - return true -end - ---- 14.25 / If-Modified-Since --- Test whether the given message object contains an "If-Modified-Since" header --- and compare it against the given stat object. --- @param req HTTP request message object --- @param stat A file.stat object --- @return Boolean indicating whether the precondition is ok --- @return Alternative status code if the precondition failed --- @return Table containing extra HTTP headers if the precondition failed -function if_modified_since( req, stat ) - local h = req.headers - - -- Compare mtimes - if type(h['If-Modified-Since']) == "string" then - local since = date.to_unix( h['If-Modified-Since'] ) - - if stat == nil or since < stat.mtime then - return true - end - - return false, 304, { - ["ETag"] = mk_etag( stat ); - ["Date"] = date.to_http( os.time() ); - ["Last-Modified"] = date.to_http( stat.mtime ) - } - end - - return true -end - ---- 14.26 / If-None-Match --- Test whether the given message object contains an "If-None-Match" header and --- compare it against the given stat object. --- @param req HTTP request message object --- @param stat A file.stat object --- @return Boolean indicating whether the precondition is ok --- @return Alternative status code if the precondition failed --- @return Table containing extra HTTP headers if the precondition failed -function if_none_match( req, stat ) - local h = req.headers - local etag = mk_etag( stat ) - local method = req.env and req.env.REQUEST_METHOD or "GET" - - -- Check for matching resource - if type(h['If-None-Match']) == "string" then - for ent in h['If-None-Match']:gmatch("([^, ]+)") do - if ( ent == '*' or ent == etag ) and stat ~= nil then - if method == "GET" or method == "HEAD" then - return false, 304, { - ["ETag"] = etag; - ["Date"] = date.to_http( os.time() ); - ["Last-Modified"] = date.to_http( stat.mtime ) - } - else - return false, 412 - end - end - end - end - - return true -end - ---- 14.27 / If-Range --- The If-Range header is currently not implemented due to the lack of general --- byte range stuff in luci.http.protocol . This function will always return --- false, 412 to indicate a failed precondition. --- @param req HTTP request message object --- @param stat A file.stat object --- @return Boolean indicating whether the precondition is ok --- @return Alternative status code if the precondition failed -function if_range( req, stat ) - -- Sorry, no subranges (yet) - return false, 412 -end - ---- 14.28 / If-Unmodified-Since --- Test whether the given message object contains an "If-Unmodified-Since" --- header and compare it against the given stat object. --- @param req HTTP request message object --- @param stat A file.stat object --- @return Boolean indicating whether the precondition is ok --- @return Alternative status code if the precondition failed -function if_unmodified_since( req, stat ) - local h = req.headers - - -- Compare mtimes - if type(h['If-Unmodified-Since']) == "string" then - local since = date.to_unix( h['If-Unmodified-Since'] ) - - if stat ~= nil and since <= stat.mtime then - return false, 412 - end - end - - return true -end |