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

annotate mod_pubsub_mqtt/mqtt.lib.lua @ 4127:e9e10ec1b91c

mod_firewall: Add checkcerts option for HTTP lists, cert verification disabled when SNI unsupported This provides a balance between security and usability. SNI is supported in Prosody trunk and in Prosody 0.11 from commit 30d3f6f85eb8 (scheduled for 0.11.7).

author	Matthew Wild <mwild1@gmail.com>
date	Tue, 15 Sep 2020 11:49:55 +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 @ 4127:e9e10ec1b91c