Mercurial > prosody-modules
annotate mod_block_subscriptions/mod_block_subscriptions.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> |
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date | Sun, 22 Aug 2021 13:22:59 +0200 |
parents | 107eb83aa732 |
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mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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1 local allowed_presence_types = { probe = true, unavailable = true }; |
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Matthew Wild <mwild1@gmail.com>
parents:
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2 |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
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3 function filter_presence(event) |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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4 local stanza = event.stanza; |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
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5 local presence_type = stanza.attr.type; |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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6 if presence_type == nil or allowed_presence_types[presence_type] then |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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7 return; |
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Matthew Wild <mwild1@gmail.com>
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8 end |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
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9 return true; -- Drop |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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10 end |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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11 |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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12 module:hook("pre-presence/bare", filter_presence, 200); -- Client sending |
107eb83aa732
mod_block_subscriptions: Block incoming and outgoing presence subscriptions (useful in conjunction with mod_readonly)
Matthew Wild <mwild1@gmail.com>
parents:
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13 module:hook("presence/bare", filter_presence, 200); -- Client receiving |