Mercurial > prosody-modules
view mod_default_vcard/mod_default_vcard.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 | 7236cdec3ea1 |
children |
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local datamanager = require "util.datamanager"; local st = require "util.stanza"; local host = module.host; module:hook("user-registered", function(event) local username = event.username; local data = datamanager.load(username, host, "account_details"); local vcard = datamanager.load(username, host, "vcard"); --module:log("debug", "Has account details: %s", data and "yes" or "no"); --module:log("debug", "Has vCard: %s", vcard and "yes" or "no"); if data and not vcard then local name, first, last = data.name, data.first, data.last; if not name and (first and last) then name = first .. " " .. last; elseif name and not (first and last) then first, last = name:match("^(%w+)%s+(%w+)$") end local vcard = st.stanza("vCard", { xmlns = "vcard-temp" }) :tag("VERSION"):text("3.0"):up(); if first or last then vcard:tag("N") :tag("FAMILY"):text(last or ""):up() :tag("GIVEN"):text(first or ""):up() :up() end if name then vcard:tag("FN"):text(name or ""):up() end vcard:tag("NICKNAME"):text(data.nick or username):up(); if data.email then vcard:tag("EMAIL"):tag("USERID"):text(data.email):up():up(); end local ok, err = datamanager.store(username, host, "vcard", st.preserialize(vcard)); if not ok then module:log("error", "Couldn't save vCard data, %s", err); end end end);