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mod_mam/fallback_archive.lib.lua @ 3965:2b10e51d85a6
mod_muc_limits: Add config option to limit to join stanzas only
This is a bit more limited in pre-0.11 MUC modules, because it just
detects stanzas sent to full JIDs (which would include all presence
and nick changes).
This option is useful for setups where users are typically unaffiliated,
but trusted (e.g. if access to the room is gated through some other
means such as password/token auth).
author | Matthew Wild <mwild1@gmail.com> |
---|---|
date | Fri, 03 Apr 2020 12:26:56 +0100 |
parent | 2508:03f6d9ed2903 |
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-- luacheck: ignore 212/self local uuid = require "util.uuid".generate; local store = module:shared("archive"); local archive_store = { _provided_by = "mam"; name = "fallback"; }; function archive_store:append(username, key, value, when, with) local archive = store[username]; if not archive then archive = { [0] = 0 }; store[username] = archive; end local index = (archive[0] or #archive)+1; local item = { key = key, when = when, with = with, value = value }; if not key or archive[key] then key = uuid(); item.key = key; end archive[index] = item; archive[key] = index; archive[0] = index; return key; end function archive_store:find(username, query) local archive = store[username] or {}; local start, stop, step = 1, archive[0] or #archive, 1; local qstart, qend, qwith = -math.huge, math.huge; local limit; if query then if query.reverse then start, stop, step = stop, start, -1; if query.before and archive[query.before] then start = archive[query.before] - 1; end elseif query.after and archive[query.after] then start = archive[query.after] + 1; end qwith = query.with; limit = query.limit; qstart = query.start or qstart; qend = query["end"] or qend; end return function () if limit and limit <= 0 then return end for i = start, stop, step do local item = archive[i]; if (not qwith or qwith == item.with) and item.when >= qstart and item.when <= qend then if limit then limit = limit - 1; end start = i + step; -- Start on next item return item.key, item.value, item.when, item.with; end end end end function archive_store:delete(username, query) if not query or next(query) == nil then -- no specifics, delete everything store[username] = nil; return true; end local archive = store[username]; if not archive then return true; end -- no messages, nothing to delete local qstart = query.start or -math.huge; local qend = query["end"] or math.huge; local qwith = query.with; store[username] = nil; for i = 1, #archive do local item = archive[i]; local when, with = item.when, item.when; -- Add things that don't match the query if not ((not qwith or qwith == item.with) and item.when >= qstart and item.when <= qend) then self:append(username, item.key, item.value, when, with); end end return true; end return archive_store;