Software / code / prosody
Annotate
plugins/mod_s2s_bidi.lua @ 12446:e54b8a5e35ad 0.12
util.random: Test whether util.crand works before using it (fix #1734)
util.crand can be configured at compile time to use the Linux
getrandom() system call, available from Linux 3.17, but it is still
possible to load it with an older kernel lacking that system call, where
attempting to use it throws an ENOSYS error.
By testing for this on load we can fall back to /dev/urandom in this
case.
| author | Kim Alvefur <zash@zash.se> |
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| date | Sat, 02 Apr 2022 16:33:27 +0200 |
| parent | 12330:38b5b05407be |
| child | 12809:71bd009a9789 |
| rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2019 Kim Alvefur |
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3 -- |
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4 -- This project is MIT/X11 licensed. Please see the |
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5 -- COPYING file in the source package for more information. |
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6 -- |
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7 |
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8 local st = require "util.stanza"; |
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9 |
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10 local xmlns_bidi_feature = "urn:xmpp:features:bidi" |
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11 local xmlns_bidi = "urn:xmpp:bidi"; |
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12 |
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13 local require_encryption = module:get_option_boolean("s2s_require_encryption", true); |
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14 |
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15 module:hook("s2s-stream-features", function(event) |
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16 local origin, features = event.origin, event.features; |
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17 if origin.type == "s2sin_unauthed" and (not require_encryption or origin.secure) then |
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18 features:tag("bidi", { xmlns = xmlns_bidi_feature }):up(); |
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19 end |
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20 end); |
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21 |
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22 module:hook_tag("http://etherx.jabber.org/streams", "features", function (session, stanza) |
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23 if session.type == "s2sout_unauthed" and (not require_encryption or session.secure) then |
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24 local bidi = stanza:get_child("bidi", xmlns_bidi_feature); |
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25 if bidi then |
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26 session.incoming = true; |
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27 session.log("debug", "Requesting bidirectional stream"); |
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28 session.sends2s(st.stanza("bidi", { xmlns = xmlns_bidi })); |
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29 end |
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30 end |
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31 end, 200); |
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32 |
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33 module:hook_tag("urn:xmpp:bidi", "bidi", function(session) |
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34 if session.type == "s2sin_unauthed" and (not require_encryption or session.secure) then |
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35 session.log("debug", "Requested bidirectional stream"); |
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36 session.outgoing = true; |
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37 return true; |
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38 end |
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39 end); |
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40 |
