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--[[ $%BEGINLICENSE%$
Copyright (C) 2007-2008 MySQL AB, 2008 Sun Microsystems, Inc
This program 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; version 2 of the License.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$%ENDLICENSE%$ --]]
local tk = require('proxy.tokenizer')
local DEBUG = os.getenv('DEBUG') or 0
DEBUG=DEBUG+0
function print_debug(msg)
if DEBUG > 0 then
print(msg)
end
end
function packet_auth(fields)
fields = fields or { }
return "\010" .. -- proto version
(fields.version or "5.0.45-proxy") .. -- version
"\000" .. -- term-null
"\001\000\000\000" .. -- thread-id
"\065\065\065\065" ..
"\065\065\065\065" .. -- challenge - part I
"\000" .. -- filler
"\001\130" .. -- server cap (long pass, 4.1 proto)
"\008" .. -- charset
"\002\000" .. -- status
("\000"):rep(13) .. -- filler
"\065\065\065\065"..
"\065\065\065\065"..
"\065\065\065\065"..
"\000" -- challenge - part II
end
function connect_server()
-- emulate a server
proxy.response = {
type = proxy.MYSQLD_PACKET_RAW,
packets = {
packet_auth()
}
}
return proxy.PROXY_SEND_RESULT
end
function read_query( packet )
if packet:byte() ~= proxy.COM_QUERY then
print_debug('>>>>>> skipping')
proxy.response = { type = proxy.MYSQLD_PACKET_OK }
return proxy.PROXY_SEND_RESULT
end
print_debug('>>>>>> after skipping')
local query = packet:sub(2)
local tokens = tk.tokenize(query)
local stripped_tokens = tk.tokens_without_comments(tokens, true )
local simple_tokens = tk.bare_tokens(stripped_tokens, true )
proxy.response.type = proxy.MYSQLD_PACKET_OK
proxy.response.resultset = {
fields = {
{ type = proxy.MYSQL_TYPE_STRING, name = "item", },
{ type = proxy.MYSQL_TYPE_STRING, name = "value", },
},
rows = {
{ 'original', query },
{ 'rebuilt' , tk.tokens_to_query(tokens) }
}
}
print_debug('>>>>>> returning')
return proxy.PROXY_SEND_RESULT
end
function disconnect_client()
print_debug('>>>>>> end session')
end
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