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mod_adhoc_dataforms_demo/mod_adhoc_dataforms_demo.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 |
parent | 4581:3e2e708fd18b |
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local dataforms = require "util.dataforms"; local adhoc_util = require "util.adhoc"; local serialization = require "util.serialization"; local adhoc_new = module:require "adhoc".new; -- Dataform borrowed from Prosodys busted test for util.dataforms local form = dataforms.new({ title = "form-title", instructions = "form-instructions", { type = "hidden", name = "FORM_TYPE", value = "xmpp:prosody.im/spec/util.dataforms#1", }; { type = "fixed", label = "fixed-label", name = "fixed-field#1", value = "fixed-value", }, { type = "hidden", label = "hidden-label", name = "hidden-field", value = "hidden-value", }, { type = "text-single", label = "text-single-label", name = "text-single-field", value = "text-single-value", }, { type = "text-multi", label = "text-multi-label", name = "text-multi-field", value = "text\nmulti\nvalue", }, { type = "text-private", label = "text-private-label", name = "text-private-field", value = "text-private-value", }, { type = "boolean", label = "boolean-label", name = "boolean-field", value = true, }, { type = "fixed", label = "fixed-label", name = "fixed-field#2", value = "fixed-value", }, { type = "list-multi", label = "list-multi-label", name = "list-multi-field", value = { "list-multi-option-value#1", "list-multi-option-value#3", }, options = { { label = "list-multi-option-label#1", value = "list-multi-option-value#1", default = true, }, { label = "list-multi-option-label#2", value = "list-multi-option-value#2", default = false, }, { label = "list-multi-option-label#3", value = "list-multi-option-value#3", default = true, }, } }, { type = "jid-single", label = "jid-single-label", name = "jid-single-field", value = "jid@single/value", }, { type = "jid-multi", label = "jid-multi-label", name = "jid-multi-field", value = { "jid@multi/value#1", "jid@multi/value#2", }, }, { type = "list-single", label = "list-single-label", name = "list-single-field", value = "list-single-value", options = { "list-single-value", "list-single-value#2", "list-single-value#3", } }, }) local function handler(fields, err, data) -- luacheck: ignore 212/data return { status = "completed", info = "Data was:\n" .. serialization.serialize(err or fields), }; end module:provides("adhoc", adhoc_new("Dataforms Demo", "xmpp:zash.se/mod_adhoc_dataforms_demo#form", adhoc_util.new_simple_form(form, handler), "any")); local function multi_step_command(_, data, state) if data.action == "cancel" then return { status = "canceled" }; elseif data.action == "complete" then return { status = "completed", info = "State was:\n" .. serialization.serialize(state, { fatal = false }), }; end if state and data.action == "execute" then data.action = "next"; elseif not state and data.action == "next" then -- Prevent jumping directly to step 2 return { status = "canceled", error = "Invalid action" }; end state = state or { step = 1, forms = { } }; if data.action == "next" then state.step = state.step + 1; elseif data.action == "prev" then state.step = math.max(state.step - 1, 1); end local current_form = state.forms[state.step] if not current_form then current_form = { title = string.format("Step %d", state.step); instructions = state.step == 1 and "Here's a form." or "Here's another form."; }; local already_selected = {}; for _ = 1, math.random(1, 5) do local random repeat random = math.random(2, #form); until not already_selected[random] already_selected[random] = true; table.insert(current_form, form[random]); end state.forms[state.step] = dataforms.new(current_form); end local next_step = { status = "executing", form = current_form, default = "next", actions = { "next", "complete" }, }; if state.step > 1 then table.insert(next_step.actions, 1, "prev"); end return next_step, state; end local permission = "any"; if not module.send_iq then -- hacky attempt at detecting 0.11 or earlier permission = "user"; end module:depends("adhoc"); module:provides("adhoc", adhoc_new("Multi-step command demo", "xmpp:zash.se/mod_adhoc_dataforms_demo#multi", multi_step_command, permission));