local st = require "util.stanza"; module:depends("http"); local uuid_new = require "util.uuid".generate; local os_time = os.time; local t_insert, t_remove = table.insert, table.remove; local add_task = require "util.timer".add_task; local jid_bare = require "util.jid".bare; local muc_rooms = module:depends "muc".rooms; local utf8_pattern = "[\194-\244][\128-\191]*$"; local function drop_invalid_utf8(seq) local start = seq:byte(); module:log("debug", "utf8: %d, %d", start, #seq); if (start <= 223 and #seq < 2) or (start >= 224 and start <= 239 and #seq < 3) or (start >= 240 and start <= 244 and #seq < 4) or (start > 244) then return ""; end return seq; end local function utf8_length(str) local _, count = string.gsub(str, "[^\128-\193]", ""); return count; end local pastebin_private_messages = module:get_option_boolean("pastebin_private_messages", hosts[module.host].type ~= "component"); local length_threshold = module:get_option_number("pastebin_threshold", 500); local line_threshold = module:get_option_number("pastebin_line_threshold", 4); local max_summary_length = module:get_option_number("pastebin_summary_length", 150); local html_preview = module:get_option_boolean("pastebin_html_preview", true); local base_url = module:get_option_string("pastebin_url", module:http_url()):gsub("/$", "").."/"; -- Seconds a paste should live for in seconds (config is in hours), default 24 hours local expire_after = math.floor(module:get_option_number("pastebin_expire_after", 24) * 3600); local trigger_string = module:get_option_string("pastebin_trigger"); trigger_string = (trigger_string and trigger_string .. " "); local pastes = {}; local default_headers = { ["Content-Type"] = "text/plain; charset=utf-8" }; local xmlns_xhtmlim = "http://jabber.org/protocol/xhtml-im"; local xmlns_xhtml = "http://www.w3.org/1999/xhtml"; function pastebin_text(text) local uuid = uuid_new(); pastes[uuid] = { body = text, time = os_time(), headers = default_headers }; pastes[#pastes+1] = uuid; if not pastes[2] then -- No other pastes, give the timer a kick add_task(expire_after, expire_pastes); end return base_url..uuid; end function handle_request(event, pasteid) if not pasteid or not pastes[pasteid] then event.response.headers = default_headers; return event.response:send("Invalid paste id, perhaps it expired?"); end --module:log("debug", "Received request, replying: %s", pastes[pasteid].text); return pastes[pasteid]; end function check_message(data) local origin, stanza = data.origin, data.stanza; -- Only check for MUC presence when loaded on a component. if module:get_host_type() == "component" then local room = muc_rooms[jid_bare(stanza.attr.to)]; if not room then return; end local nick = room._jid_nick[stanza.attr.from]; if not nick then return; end end local body, bodyindex, htmlindex; for k,v in ipairs(stanza) do if v.name == "body" then body, bodyindex = v, k; elseif v.name == "html" and v.attr.xmlns == xmlns_xhtmlim then htmlindex = k; end end if not body then return; end body = body:get_text(); --module:log("debug", "Body(%s) length: %d", type(body), #(body or "")); if body and ( ((#body > length_threshold) and (utf8_length(body) > length_threshold)) or (trigger_string and body:find(trigger_string, 1, true) == 1) or (select(2, body:gsub("\n", "%0")) >= line_threshold) ) then if trigger_string then body = body:gsub("^" .. trigger_string, "", 1); end local url = pastebin_text(body); module:log("debug", "Pasted message as %s", url); --module:log("debug", " stanza[bodyindex] = %q", tostring( stanza[bodyindex])); local summary = (body:sub(1, max_summary_length):gsub(utf8_pattern, drop_invalid_utf8) or ""):match("[^\n]+") or ""; summary = summary:match("^%s*(.-)%s*$"); local summary_prefixed = summary:match("[,:]$"); stanza[bodyindex][1] = (summary_prefixed and (summary.." ") or "")..url; if html_preview then local line_count = select(2, body:gsub("\n", "%0")) + 1; local link_text = ("[view %spaste (%d line%s)]"):format(summary_prefixed and "" or "rest of ", line_count, line_count == 1 and "" or "s"); local html = st.stanza("html", { xmlns = xmlns_xhtmlim }):tag("body", { xmlns = xmlns_xhtml }); html:tag("p"):text(summary.." "):up(); html:tag("a", { href = url }):text(link_text):up(); stanza[htmlindex or #stanza+1] = html; end end end module:hook("message/bare", check_message); if pastebin_private_messages then module:hook("message/full", check_message); end function expire_pastes(time) time = time or os_time(); -- COMPAT with 0.5 if pastes[1] then pastes[pastes[1]] = nil; t_remove(pastes, 1); if pastes[1] then return (expire_after - (time - pastes[pastes[1]].time)) + 1; end end end module:provides("http", { route = { ["GET /*"] = handle_request; }; }); local function set_pastes_metatable() if expire_after == 0 then local dm = require "util.datamanager"; setmetatable(pastes, { __index = function (pastes, id) if type(id) == "string" then return dm.load(id, module.host, "pastebin"); end end; __newindex = function (pastes, id, data) if type(id) == "string" then dm.store(id, module.host, "pastebin", data); end end; }); else setmetatable(pastes, nil); end end module.load = set_pastes_metatable; function module.save() return { pastes = pastes }; end function module.restore(data) pastes = data.pastes or pastes; set_pastes_metatable(); end