local st = require "util.stanza"; local httpserver = require "net.httpserver"; 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 utf8_pattern = "[\194-\244][\128-\191]*$"; local function drop_invalid_utf8(seq) local start = seq:byte(); module:log("utf8: %d, %d", start, #seq); if (start <= 223 and #seq < 2) or (start >= 224 and start <= 239 and #seq < 3) or (start >= 240 and start <= 244 and #seq < 4) or (start > 244) then return ""; end return seq; end local pastebin_private_messages = module:get_option_boolean("pastebin_private_messages", hosts[module.host].type ~= "component"); local max_summary_length = module:get_option_number("pastebin_summary_length", 150); local length_threshold = config.get(module.host, "core", "pastebin_threshold") or 500; local line_threshold = config.get(module.host, "core", "pastebin_line_threshold") or 4; local base_url = config.get(module.host, "core", "pastebin_url"); -- Seconds a paste should live for in seconds (config is in hours), default 24 hours local expire_after = math.floor((config.get(module.host, "core", "pastebin_expire_after") or 24) * 3600); local trigger_string = config.get(module.host, "core", "pastebin_trigger"); trigger_string = (trigger_string and trigger_string .. " "); local pastes = {}; local default_headers = { ["Content-Type"] = "text/plain; charset=utf-8" }; local xmlns_xhtmlim = "http://jabber.org/protocol/xhtml-im"; local xmlns_xhtml = "http://www.w3.org/1999/xhtml"; function pastebin_text(text) local uuid = uuid_new(); pastes[uuid] = { body = text, time = os_time(), headers = default_headers }; pastes[#pastes+1] = uuid; if not pastes[2] then -- No other pastes, give the timer a kick add_task(expire_after, expire_pastes); end return base_url..uuid; end function handle_request(method, body, request) local pasteid = request.url.path:match("[^/]+$"); if not pasteid or not pastes[pasteid] then return "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; 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) 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 ""; stanza[bodyindex][1] = summary:match("^([^\n:]*:?)").." "..url; 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("[...]"):up(); stanza[htmlindex or #stanza+1] = html; 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 local ports = config.get(module.host, "core", "pastebin_ports") or { 5280 }; for _, options in ipairs(ports) do local port, base, ssl, interface = 5280, "pastebin", false, nil; if type(options) == "number" then port = options; elseif type(options) == "table" then port, base, ssl, interface = options.port or 5280, options.path or "pastebin", options.ssl or false, options.interface; elseif type(options) == "string" then base = options; end base_url = base_url or ("http://"..module:get_host()..(port ~= 80 and (":"..port) or "").."/"..base.."/"); httpserver.new{ port = port, base = base, handler = handle_request, ssl = ssl } end