prosody-modules: mod_pubsub_mqtt/mqtt.lib.lua annotate

annotate mod_pubsub_mqtt/mqtt.lib.lua @ 3866:c0df50ce96f0

mod_rest: Handle internal http request errors early and then return Skips over attempted parsing of the payload which usually failed since the body is an error string like "connection refused", so this produced useless errors.

author	Kim Alvefur <zash@zash.se>
date	Sat, 25 Jan 2020 20:22:12 +0100
parents	7dbde05b48a9
children	d2a84e6aed2b

rev	line source
1240 e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	1 local bit = require "bit";
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	2
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	3 local stream_mt = {};
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	4 stream_mt.__index = stream_mt;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	5
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	6 function stream_mt:read_bytes(n_bytes)
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	7 module:log("debug", "Reading %d bytes... (buffer: %d)", n_bytes, #self.buffer);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	8 local data = self.buffer;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	9 if not data then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	10 module:log("debug", "No data, pausing.");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	11 data = coroutine.yield();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	12 module:log("debug", "Have %d bytes of data now (want %d)", #data, n_bytes);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	13 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	14 if #data >= n_bytes then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	15 data, self.buffer = data:sub(1, n_bytes), data:sub(n_bytes+1);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	16 elseif #data < n_bytes then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	17 module:log("debug", "Not enough data (only %d bytes out of %d), pausing.", #data, n_bytes);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	18 self.buffer = data..coroutine.yield();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	19 module:log("debug", "Now we have %d bytes, reading...", #data);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	20 return self:read_bytes(n_bytes);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	21 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	22 module:log("debug", "Returning %d bytes (buffer: %d)", #data, #self.buffer);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	23 return data;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	24 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	25
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	26 function stream_mt:read_string()
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	27 local len1, len2 = self:read_bytes(2):byte(1,2);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	28 local len = bit.lshift(len1, 8) + len2;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	29 return self:read_bytes(len), len+2;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	30 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	31
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	32 local packet_type_codes = {
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	33 "connect", "connack",
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	34 "publish", "puback", "pubrec", "pubrel", "pubcomp",
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	35 "subscribe", "subak", "unsubscribe", "unsuback",
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	36 "pingreq", "pingresp",
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	37 "disconnect"
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	38 };
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	39
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	40 function stream_mt:read_packet()
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	41 local packet = {};
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	42 local header = self:read_bytes(1):byte();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	43 packet.type = packet_type_codes[bit.rshift(bit.band(header, 0xf0), 4)];
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	44 packet.dup = bit.band(header, 0x08) == 0x08;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	45 packet.qos = bit.rshift(bit.band(header, 0x06), 1);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	46 packet.retain = bit.band(header, 0x01) == 0x01;
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1240 diff changeset	47
1240 e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	48 -- Get length
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	49 local length, multiplier = 0, 1;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	50 repeat
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	51 local digit = self:read_bytes(1):byte();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	52 length = length + bit.band(digit, 0x7f)*multiplier;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	53 multiplier = multiplier*128;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	54 until bit.band(digit, 0x80) == 0;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	55 packet.length = length;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	56 if packet.type == "connect" then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	57 if self:read_string() ~= "MQIsdp" then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	58 module:log("warn", "Unexpected packet signature!");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	59 packet.type = nil; -- Invalid packet
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	60 else
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	61 packet.version = self:read_bytes(1):byte();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	62 packet.connect_flags = self:read_bytes(1):byte();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	63 packet.keepalive_timer = self:read_bytes(1):byte();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	64 length = length - 11;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	65 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	66 elseif packet.type == "publish" then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	67 packet.topic = self:read_string();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	68 length = length - (#packet.topic+2);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	69 if packet.qos == 1 or packet.qos == 2 then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	70 packet.id = self:read_bytes(2);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	71 length = length - 2;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	72 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	73 elseif packet.type == "subscribe" then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	74 if packet.qos == 1 or packet.qos == 2 then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	75 packet.id = self:read_bytes(2);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	76 length = length - 2;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	77 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	78 local topics = {};
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	79 while length > 0 do
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	80 local topic, len = self:read_string();
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	81 table.insert(topics, topic);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	82 self:read_bytes(1); -- QoS not used
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	83 length = length - (len+1);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	84 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	85 packet.topics = topics;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	86 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	87 if length > 0 then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	88 packet.data = self:read_bytes(length);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	89 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	90 return packet;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	91 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	92
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	93 local function new_parser(self)
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	94 return coroutine.wrap(function (data)
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	95 self.buffer = data;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	96 while true do
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	97 data = coroutine.yield(self:read_packet());
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	98 module:log("debug", "Parser: %d new bytes", #data);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	99 self.buffer = (self.buffer or "")..data;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	100 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	101 end);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	102 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	103
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	104 function stream_mt:feed(data)
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	105 module:log("debug", "Feeding %d bytes", #data);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	106 local packets = {};
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	107 local packet = self.parser(data);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	108 while packet do
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	109 module:log("debug", "Received packet");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	110 table.insert(packets, packet);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	111 packet = self.parser("");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	112 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	113 module:log("debug", "Returning %d packets", #packets);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	114 return packets;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	115 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	116
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	117 local function new_stream()
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	118 local stream = setmetatable({}, stream_mt);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	119 stream.parser = new_parser(stream);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	120 return stream;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	121 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	122
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	123 local function serialize_packet(packet)
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	124 local type_num = 0;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	125 for i, v in ipairs(packet_type_codes) do -- FIXME: I'm so tired right now.
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	126 if v == packet.type then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	127 type_num = i;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	128 break;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	129 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	130 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	131 local header = string.char(bit.lshift(type_num, 4));
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1240 diff changeset	132
1240 e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	133 if packet.type == "publish" then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	134 local topic = packet.topic or "";
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	135 packet.data = string.char(bit.band(#topic, 0xff00), bit.band(#topic, 0x00ff))..topic..packet.data;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	136 elseif packet.type == "suback" then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	137 local t = {};
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	138 for _, topic in ipairs(packet.topics) do
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	139 table.insert(t, string.char(bit.band(#topic, 0xff00), bit.band(#topic, 0x00ff))..topic.."\000");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	140 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	141 packet.data = table.concat(t);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	142 end
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1240 diff changeset	143
1240 e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	144 -- Get length
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	145 local length = #(packet.data or "");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	146 repeat
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	147 local digit = length%128;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	148 length = math.floor(length/128);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	149 if length > 0 then
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	150 digit = bit.bor(digit, 0x80);
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	151 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	152 header = header..string.char(digit); -- FIXME: ...
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	153 until length <= 0;
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1240 diff changeset	154
1240 e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	155 return header..(packet.data or "");
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	156 end
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	157
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	158 return {
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	159 new_stream = new_stream;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	160 serialize_packet = serialize_packet;
e0d97eb52ab8 mod_pubsub_mqtt: MQTT (a lightweight binary pubsub protocol) interface for mod_pubsub Matthew Wild <mwild1@gmail.com> parents: diff changeset	161 };

Mercurial > prosody-modules

annotate mod_pubsub_mqtt/mqtt.lib.lua @ 3866:c0df50ce96f0