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annotate mod_discodot/README.markdown @ 4651:8231774f5bfd

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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 253df0798996
children
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1 # Flowcharts!
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2
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3 Put this module somewhere Prosody will find it and then run
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4 `prosodyctl mod_discodot | dot -Tsvg -o disco-graph.svg` to receive a
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5 graph like this[^1]:
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6
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7 +------------------------+ +------------------------------------------+
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8 | proxy.external.example | <-- | VirtualHost "example.com" | -+
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9 +------------------------+ +------------------------------------------+ |
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10 | |
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11 | |
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12 v |
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13 +------------------------------------------+ |
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14 | Component "conference.example.com" "muc" | <+
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15 +------------------------------------------+
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16
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17 Example config for the above:
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18
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19 ``` {.lua}
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20 VirtualHost "xmpp.example.com"
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21 disco_items = {
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22 { "conference.example.com"; };
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23 { "proxy.external.example"; };
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24 }
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25
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26 Component "conference.example.com" "muc"
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27 ```
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28
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29 Note the `disco_items` entry causing duplication since subdomains are
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30 implicitly added.
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31
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32 [^1]: this was actuall made with `graph-easy`