Mercurial > prosody-modules
view mod_vcard_command/mod_vcard_command.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 | b2c9b832612b |
children |
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----------------------------------------------------------- -- mod_vcard_command: Manage vcards through prosodyctl -- version 0.02 ----------------------------------------------------------- -- Copyright (C) 2013 Stefan `Sec` Zehl -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. ----------------------------------------------------------- function module.load() module:log("error", "Do not load this module in Prosody"); module.host = "*"; return; end -- Workaround for lack of util.startup... _G.bare_sessions = _G.bare_sessions or {}; local storagemanager = require "core.storagemanager"; local datamanager = require "util.datamanager"; local xml = require "util.xml"; local jid = require "util.jid"; local warn = prosodyctl.show_warning; local st = require "util.stanza" -- local vcards = module:open_store("vcard"); -- Print anything - including nested tables function table_print (tt, indent, done) done = done or {} indent = indent or 0 if type(tt) == "table" then for key, value in pairs (tt) do io.write(string.rep (" ", indent)) -- indent it if type (value) == "table" and not done [value] then done [value] = true io.write(string.format("[%s] => table\n", tostring (key))); io.write(string.rep (" ", indent+4)) -- indent it io.write("(\n"); table_print (value, indent + 7, done) io.write(string.rep (" ", indent+4)) -- indent it io.write(")\n"); else io.write(string.format("[%s] => %s\n", tostring (key), tostring(value))) end end else io.write(tt .. "\n") end end -- Make a *one-way* subscription. User will see when contact is online, -- contact will not see when user is online. function vcard_get(user_jid) local user_username, user_host = jid.split(user_jid); if not hosts[user_host] then warn("The host '%s' is not configured for this server.", user_host); return; end storagemanager.initialize_host(user_host); local vCard; vCard = st.deserialize(datamanager.load(user_username, user_host, "vcard")); if vCard then print(vCard); else warn("The user '%s' has no vCard configured.",user_jid); end end function vcard_set(user_jid, file) local user_username, user_host = jid.split(user_jid); if not hosts[user_host] then warn("The host '%s' is not configured for this server.", user_host); return; end storagemanager.initialize_host(user_host); local f = io.input(file); local xmldata=io.read("*all"); io.close(f); local vCard=st.preserialize(xml.parse(xmldata)); if vCard then datamanager.store(user_username, user_host, "vcard", vCard); else warn("Could not parse the file."); end end function vcard_delete(user_jid) local user_username, user_host = jid.split(user_jid); if not hosts[user_host] then warn("The host '%s' is not configured for this server.", user_host); return; end storagemanager.initialize_host(user_host); datamanager.store(user_username, user_host, "vcard", nil); end function module.command(arg) local command = arg[1]; if not command then warn("Valid subcommands: get | set | delete "); return 0; end table.remove(arg, 1); if command == "get" then vcard_get(arg[1]); return 0; elseif command == "set" then vcard_set(arg[1], arg[2]); return 0; elseif command == "delete" then vcard_delete(arg[1]); return 0; else warn("Unknown command: %s", command); return 1; end return 0; end