prosody
7c2ef5a1ec9c
net/resolvers/service.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

net/resolvers/service.lua @ 11370:7c2ef5a1ec9c

util.datamanager: Add basic tests Test all the things! Somewhat covered by the storagemanager tests, but we don't currently don't have that automated as it needs SQL engines.
author Kim Alvefur <zash@zash.se>
date Tue, 09 Feb 2021 23:25:30 +0100
parent 10970:4603697aee50
child 11710:26a8cc9d9eb7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local adns = require "net.adns";
9388
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
2 local basic = require "net.resolvers.basic";
10440
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
3 local inet_pton = require "util.net".pton;
10384
94c9c574cd8a net.resolvers: Apply IDNA conversion to ascii for DNS lookups (fixes #1426)
Kim Alvefur <zash@zash.se>
parents: 9397
diff changeset
4 local idna_to_ascii = require "util.encodings".idna.to_ascii;
9691
e11e076f0eb8 various: Don't rely on _G.unpack existing
Kim Alvefur <zash@zash.se>
parents: 9397
diff changeset
5 local unpack = table.unpack or unpack; -- luacheck: ignore 113
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 local methods = {};
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8 local resolver_mt = { __index = methods };
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10 -- Find the next target to connect to, and
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11 -- pass it to cb()
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 function methods:next(cb)
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 if self.targets then
10650
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
14 if not self.resolver then
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
15 if #self.targets == 0 then
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
16 cb(nil);
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
17 return;
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
18 end
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
19 local next_target = table.remove(self.targets, 1);
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
20 self.resolver = basic.new(unpack(next_target, 1, 4));
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 end
9388
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
22 self.resolver:next(function (...)
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
23 if ... == nil then
10650
324a0c7d1c6a net.resolvers.service: Fix resolving of targets with multiple IPs
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
24 self.resolver = nil;
9388
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
25 self:next(cb);
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
26 else
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
27 cb(...);
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
28 end
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
29 end);
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 return;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32
10385
62a7042e0771 net.resolvers: Abort on hostnames not passing IDNA validation
Kim Alvefur <zash@zash.se>
parents: 10384
diff changeset
33 if not self.hostname then
62a7042e0771 net.resolvers: Abort on hostnames not passing IDNA validation
Kim Alvefur <zash@zash.se>
parents: 10384
diff changeset
34 -- FIXME report IDNA error
62a7042e0771 net.resolvers: Abort on hostnames not passing IDNA validation
Kim Alvefur <zash@zash.se>
parents: 10384
diff changeset
35 cb(nil);
10400
4c2d789a106b net.resolvers: Fix traceback from hostname failing IDNA
Kim Alvefur <zash@zash.se>
parents: 10385
diff changeset
36 return;
10385
62a7042e0771 net.resolvers: Abort on hostnames not passing IDNA validation
Kim Alvefur <zash@zash.se>
parents: 10384
diff changeset
37 end
62a7042e0771 net.resolvers: Abort on hostnames not passing IDNA validation
Kim Alvefur <zash@zash.se>
parents: 10384
diff changeset
38
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
39 local targets = {};
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
40 local function ready()
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
41 self.targets = targets;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
42 self:next(cb);
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
43 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
45 -- Resolve DNS to target list
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
46 local dns_resolver = adns.resolver();
10121
33f287519bf6 net.resolvers.service: Fix DNS fallback
Kim Alvefur <zash@zash.se>
parents: 9691
diff changeset
47 dns_resolver:lookup(function (answer, err)
33f287519bf6 net.resolvers.service: Fix DNS fallback
Kim Alvefur <zash@zash.se>
parents: 9691
diff changeset
48 if not answer and not err then
33f287519bf6 net.resolvers.service: Fix DNS fallback
Kim Alvefur <zash@zash.se>
parents: 9691
diff changeset
49 -- net.adns returns nil if there are zero records or nxdomain
33f287519bf6 net.resolvers.service: Fix DNS fallback
Kim Alvefur <zash@zash.se>
parents: 9691
diff changeset
50 answer = {};
33f287519bf6 net.resolvers.service: Fix DNS fallback
Kim Alvefur <zash@zash.se>
parents: 9691
diff changeset
51 end
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
52 if answer then
9393
e2733f504d9e net.resolvers.service: Early return on empty result set
Kim Alvefur <zash@zash.se>
parents: 9392
diff changeset
53 if #answer == 0 then
9394
bcd94cc355d3 net.resolvers.service: Add support for fallback to bare domain and default port
Kim Alvefur <zash@zash.se>
parents: 9393
diff changeset
54 if self.extra and self.extra.default_port then
9395
794eda565c69 net.resolvers.service: Rename internal variable since net.connect uses it for __tostring
Kim Alvefur <zash@zash.se>
parents: 9394
diff changeset
55 table.insert(targets, { self.hostname, self.extra.default_port, self.conn_type, self.extra });
9394
bcd94cc355d3 net.resolvers.service: Add support for fallback to bare domain and default port
Kim Alvefur <zash@zash.se>
parents: 9393
diff changeset
56 end
9393
e2733f504d9e net.resolvers.service: Early return on empty result set
Kim Alvefur <zash@zash.se>
parents: 9392
diff changeset
57 ready();
e2733f504d9e net.resolvers.service: Early return on empty result set
Kim Alvefur <zash@zash.se>
parents: 9392
diff changeset
58 return;
e2733f504d9e net.resolvers.service: Early return on empty result set
Kim Alvefur <zash@zash.se>
parents: 9392
diff changeset
59 end
e2733f504d9e net.resolvers.service: Early return on empty result set
Kim Alvefur <zash@zash.se>
parents: 9392
diff changeset
60
9392
f2d71e4284b7 net.resolvers.service: Understand when service is explicitly unavailable
Kim Alvefur <zash@zash.se>
parents: 9388
diff changeset
61 if #answer == 1 and answer[1].srv.target == "." then -- No service here
f2d71e4284b7 net.resolvers.service: Understand when service is explicitly unavailable
Kim Alvefur <zash@zash.se>
parents: 9388
diff changeset
62 ready();
f2d71e4284b7 net.resolvers.service: Understand when service is explicitly unavailable
Kim Alvefur <zash@zash.se>
parents: 9388
diff changeset
63 return;
f2d71e4284b7 net.resolvers.service: Understand when service is explicitly unavailable
Kim Alvefur <zash@zash.se>
parents: 9388
diff changeset
64 end
f2d71e4284b7 net.resolvers.service: Understand when service is explicitly unavailable
Kim Alvefur <zash@zash.se>
parents: 9388
diff changeset
65
9397
e09ddd061ec4 net.resolvers.service: Sort SRV records in correct direction
Kim Alvefur <zash@zash.se>
parents: 9396
diff changeset
66 table.sort(answer, function (a, b) return a.srv.priority < b.srv.priority end);
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
67 for _, record in ipairs(answer) do
9388
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
68 table.insert(targets, { record.srv.target, record.srv.port, self.conn_type, self.extra });
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
69 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
70 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
71 ready();
9395
794eda565c69 net.resolvers.service: Rename internal variable since net.connect uses it for __tostring
Kim Alvefur <zash@zash.se>
parents: 9394
diff changeset
72 end, "_" .. self.service .. "._" .. self.conn_type .. "." .. self.hostname, "SRV", "IN");
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
73 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
74
9395
794eda565c69 net.resolvers.service: Rename internal variable since net.connect uses it for __tostring
Kim Alvefur <zash@zash.se>
parents: 9394
diff changeset
75 local function new(hostname, service, conn_type, extra)
10440
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
76 local is_ip = inet_pton(hostname);
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
77 if not is_ip and hostname:sub(1,1) == '[' then
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
78 is_ip = inet_pton(hostname:sub(2,-2));
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
79 end
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
80 if is_ip and extra and extra.default_port then
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
81 return basic.new(hostname, extra.default_port, conn_type, extra);
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
82 end
1ee87b4979c2 net.resolvers.service: Pass IP literals directly to basic resolver
Kim Alvefur <zash@zash.se>
parents: 10401
diff changeset
83
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
84 return setmetatable({
10384
94c9c574cd8a net.resolvers: Apply IDNA conversion to ascii for DNS lookups (fixes #1426)
Kim Alvefur <zash@zash.se>
parents: 9397
diff changeset
85 hostname = idna_to_ascii(hostname);
9388
a5d11627ce5d net.resolvers.service: net.connect resolver that uses SRV records
Kim Alvefur <zash@zash.se>
parents: 8775
diff changeset
86 service = service;
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
87 conn_type = conn_type or "tcp";
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
88 extra = extra;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
89 }, resolver_mt);
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
90 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
91
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
92 return {
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
93 new = new;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
94 };