1 files changed, 93 insertions, 0 deletions
diff --git a/lem/http.lua b/lem/http.lua
new file mode 100644
index 0000000..15f4125
--- /dev/null
+++ b/lem/http.lua
@@ -0,0 +1,93 @@
+--
+-- This file is part of LEM, a Lua Event Machine.
+-- Copyright 2011-2012 Emil Renner Berthing
+--
+-- LEM is free software: you can redistribute it and/or
+-- modify it under the terms of the GNU General Public License as
+-- published by the Free Software Foundation, either version 3 of
+-- the License, or (at your option) any later version.
+--
+-- LEM is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with LEM.  If not, see <http://www.gnu.org/licenses/>.
+--
+
+local streams = require 'lem.streams'
+local M       = require 'lem.http.core'
+
+streams.parsers['HTTPRequest'] = M.HTTPRequest
+M.HTTPRequest = nil
+streams.parsers['HTTPResponse'] = M.HTTPResponse
+M.HTTPResponse = nil
+
+local tonumber = tonumber
+local concat = table.concat
+
+function M.Request:body()
+	local len, body = self.headers['Content-Length'], ''
+	if not len then return body end
+
+	len = tonumber(len)
+	if len <= 0 then return body end
+
+	if self.headers['Expect'] == '100-continue' then
+		local ok, err = self.ostream:send('HTTP/1.1 100 Continue\r\n\r\n')
+		if not ok then return nil, err end
+	end
+
+	local err
+	body, err = self.istream:read(len)
+	if not body then return nil, err end
+
+	return body
+end
+
+function M.Response:body_chunked()
+	local istream = self.istream
+	local t, n = {}, 0
+	local line, err
+	while true do
+		line, err = istream:read('*l')
+		if not line then return nil, err end
+
+		local num = tonumber(line, 16)
+		if not num then return nil, 'expectation failed' end
+		if num == 0 then break end
+
+		local data, err = istream:read(num)
+		if not data then return nil, err end
+
+		n = n + 1
+		t[n] = data
+
+		line, err = istream:read('*l')
+		if not line then return nil, err end
+	end
+
+	line, err = istream:read('*l')
+	if not line then return nil, err end
+
+	return t
+end
+
+function M.Response:body()
+	if self.headers['Transfer-Encoding'] == 'chunked' then
+		return concat(self:body_chunked())
+	end
+
+	local num = self.headers['Content-Length']
+	if not num then return nil, 'no content length specified' end
+
+	num = tonumber(num)
+	if not num then return nil, 'invalid content length' end
+
+	return self.istream:read(num)
+end
+
+return M
+
+-- vim: ts=2 sw=2 noet: