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Support 'trust' authentication method #11

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Support 'trust' authentication method #11

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40 changes: 24 additions & 16 deletions lib/resty/postgres.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -230,23 +230,31 @@ function connect(self, opts)
if typ ~= 'R' then
return nil, "handshake error, got packet type:" .. typ
end
local auth_type = string.sub(packet, 1, 4)
local salt = string.sub(packet, 5, 8)
-- send passsowrd
req = {_to_cstring(_compute_token(self, user, password, salt))}
req_len = 40
local bytes, err = _send_packet(self, req, req_len, 'p')
if not bytes then
return nil, "failed to send client authentication packet2: " .. err
end
-- receive response
packet, typ, err = _recv_packet(self)
if typ ~= 'R' then
return nil, "auth return type not support"
end
if packet ~= AUTH_REQ_OK then
return nil, "authentication failed"
local auth_type = _get_byte4(packet, 1)

if auth_type == 5 then
-- Authentication type 5 is MD5 password encryption
local salt = string.sub(packet, 5, 8)
-- send password
req = {_to_cstring(_compute_token(self, user, password, salt))}
req_len = 40
local bytes, err = _send_packet(self, req, req_len, 'p')
if not bytes then
return nil, "failed to send client authentication packet2: " .. err
end
-- receive response
packet, typ, err = _recv_packet(self)
if typ ~= 'R' then
return nil, "authentication response packet type was '"..typ.."'; expected 'R'"
end
if packet ~= AUTH_REQ_OK then
return nil, "authentication failed"
end
elseif auth_type ~= 0 then
-- 0 means authentication was already successful (with no password required)
return nil, "authentication failed: server wants to use type "..auth_type..", but we only support MD5 password encryption (type 5)"
end

while true do
packet, typ, err = _recv_packet(self)
if not packet then
Expand Down