annotate misc/sasl/example.lua @ 4651:8231774f5bfd

mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 7d2fcc7a15f7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2354
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 local method = {}
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 local method_mt = { __index = method }
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 -- This should return a set of supported mechanisms
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 function method:mechanisms()
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 return {
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 ["OAUTH-SOMETHING"] = true;
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 }
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11 -- Called when a mechanism is selecetd
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 function method:select(mechanism)
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 return mechanism == "OAUTH-SOMETHING";
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 -- Called for each message received
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 function method:process(message)
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 -- parse the message
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 if false then
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 -- To send a SASL challenge:
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 return "challenge", "respond-to-this";
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 if false then
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 -- To fail, send:
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 return "failure", "not-authorized", "Helpful error message here";
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 self.username = "someone";
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 return "success";
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33 local function new_sasl()
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34 return setmetatable({}, method_mt);
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 function method:clean_clone()
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 return setmetatable({}, method_mt);
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 local provider = {}
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 function provider.get_sasl_handler()
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 return new_sasl();
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45 end
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46
7d2fcc7a15f7 Example SASL mechanism implementation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 module:provides("auth", provider);