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mod_sentry/mod_sentry.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 | 4290:2c73544e33ea |
child | 4995:cb3de818ff55 |
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module:set_global(); local sentry_lib = module:require "sentry"; local hostname; local have_pposix, pposix = pcall(require, "util.pposix"); if have_pposix and pposix.uname then hostname = pposix.uname().nodename; end local loggingmanager = require "core.loggingmanager"; local errors = require "util.error"; local format = require "util.format".format; local default_config = assert(module:get_option("sentry"), "Please provide a 'sentry' configuration option"); default_config.server_name = default_config.server_name or hostname or "prosody"; local sentry = assert(sentry_lib.new(default_config)); local log_filters = { source = function (filter_source, name) local source = name:match(":(.+)$") or name; if filter_source == source then return true; end end; message_pattern = function (pattern, _, _, message) return not not message:match(pattern); end; }; local function sentry_error_handler(e) module:log("error", "Failed to submit event to sentry: %s", e); end local function sentry_log_sink_maker(sink_config) local filters = sink_config.ignore or {}; local n_filters = #filters; local submitting; return function (name, level, message, ...) -- Ignore any log messages that occur during sentry submission -- to avoid loops if submitting then return; end for i = 1, n_filters do local filter = filters[i]; local matched; for filter_name, filter_value in pairs(filter) do local f = log_filters[filter_name]; if f and f(filter_value, name, level, message) then matched = true; else matched = nil; break; end end if matched then return; end end if level == "warn" then level = "warning"; end local event = sentry:event(level, name):message(format(message, ...)); local params = { ... }; for i = 1, select("#", ...) do if errors.is_error(params[i]) then event:add_exception(params[i]); end end submitting = true; event:send():catch(sentry_error_handler); submitting = false; end; end loggingmanager.register_sink_type("sentry", sentry_log_sink_maker); function new(conf) --luacheck: ignore 131/new conf = conf or {}; for k, v in pairs(default_config) do if conf[k] == nil then conf[k] = v; end end return sentry_lib.new(conf); end