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plugins/mod_admin_telnet.lua @ 4649:e07ce18c503e
mod_motd: Send only to resource coming online, not the user's bare JID (fixes #282)
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 21 Apr 2012 21:16:53 +0100 |
parent | 4647:57a4f863e48f |
child | 4674:f44726a910a0 |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- module:set_global(); local _G = _G; local prosody = _G.prosody; local hosts = prosody.hosts; local console_listener = { default_port = 5582; default_mode = "*l"; interface = "127.0.0.1" }; local iterators = require "util.iterators"; local keys, values = iterators.keys, iterators.values; local jid_bare = require "util.jid".bare; local set, array = require "util.set", require "util.array"; local cert_verify_identity = require "util.x509".verify_identity; local commands = module:shared("commands") local def_env = module:shared("env"); local default_env_mt = { __index = def_env }; local function redirect_output(_G, session) local env = setmetatable({ print = session.print }, { __index = function (t, k) return rawget(_G, k); end }); env.dofile = function(name) local f, err = loadfile(name); if not f then return f, err; end return setfenv(f, env)(); end; return env; end console = {}; function console:new_session(conn) local w = function(s) conn:write(s:gsub("\n", "\r\n")); end; local session = { conn = conn; send = function (t) w(tostring(t)); end; print = function (...) local t = {}; for i=1,select("#", ...) do t[i] = tostring(select(i, ...)); end w("| "..table.concat(t, "\t").."\n"); end; disconnect = function () conn:close(); end; }; session.env = setmetatable({}, default_env_mt); -- Load up environment with helper objects for name, t in pairs(def_env) do if type(t) == "table" then session.env[name] = setmetatable({ session = session }, { __index = t }); end end return session; end local sessions = {}; function console_listener.onconnect(conn) -- Handle new connection local session = console:new_session(conn); sessions[conn] = session; printbanner(session); session.send(string.char(0)); end function console_listener.onincoming(conn, data) local session = sessions[conn]; -- Handle data (function(session, data) local useglobalenv; if data:match("^>") then data = data:gsub("^>", ""); useglobalenv = true; elseif data == "\004" then commands["bye"](session, data); return; else local command = data:lower(); command = data:match("^%w+") or data:match("%p"); if commands[command] then commands[command](session, data); return; end end session.env._ = data; local chunkname = "=console"; local chunk, err = loadstring("return "..data, chunkname); if not chunk then chunk, err = loadstring(data, chunkname); if not chunk then err = err:gsub("^%[string .-%]:%d+: ", ""); err = err:gsub("^:%d+: ", ""); err = err:gsub("'<eof>'", "the end of the line"); session.print("Sorry, I couldn't understand that... "..err); return; end end setfenv(chunk, (useglobalenv and redirect_output(_G, session)) or session.env or nil); local ranok, taskok, message = pcall(chunk); if not (ranok or message or useglobalenv) and commands[data:lower()] then commands[data:lower()](session, data); return; end if not ranok then session.print("Fatal error while running command, it did not complete"); session.print("Error: "..taskok); return; end if not message then session.print("Result: "..tostring(taskok)); return; elseif (not taskok) and message then session.print("Command completed with a problem"); session.print("Message: "..tostring(message)); return; end session.print("OK: "..tostring(message)); end)(session, data); session.send(string.char(0)); end function console_listener.ondisconnect(conn, err) local session = sessions[conn]; if session then session.disconnect(); sessions[conn] = nil; end end -- Console commands -- -- These are simple commands, not valid standalone in Lua function commands.bye(session) session.print("See you! :)"); session.disconnect(); end commands.quit, commands.exit = commands.bye, commands.bye; commands["!"] = function (session, data) if data:match("^!!") and session.env._ then session.print("!> "..session.env._); return console_listener.onincoming(session.conn, session.env._); end local old, new = data:match("^!(.-[^\\])!(.-)!$"); if old and new then local ok, res = pcall(string.gsub, session.env._, old, new); if not ok then session.print(res) return; end session.print("!> "..res); return console_listener.onincoming(session.conn, res); end session.print("Sorry, not sure what you want"); end function commands.help(session, data) local print = session.print; local section = data:match("^help (%w+)"); if not section then print [[Commands are divided into multiple sections. For help on a particular section, ]] print [[type: help SECTION (for example, 'help c2s'). Sections are: ]] print [[]] print [[c2s - Commands to manage local client-to-server sessions]] print [[s2s - Commands to manage sessions between this server and others]] print [[module - Commands to load/reload/unload modules/plugins]] print [[host - Commands to activate, deactivate and list virtual hosts]] print [[server - Uptime, version, shutting down, etc.]] print [[config - Reloading the configuration, etc.]] print [[console - Help regarding the console itself]] elseif section == "c2s" then print [[c2s:show(jid) - Show all client sessions with the specified JID (or all if no JID given)]] print [[c2s:show_insecure() - Show all unencrypted client connections]] print [[c2s:show_secure() - Show all encrypted client connections]] print [[c2s:close(jid) - Close all sessions for the specified JID]] elseif section == "s2s" then print [[s2s:show(domain) - Show all s2s connections for the given domain (or all if no domain given)]] print [[s2s:close(from, to) - Close a connection from one domain to another]] elseif section == "module" then print [[module:load(module, host) - Load the specified module on the specified host (or all hosts if none given)]] print [[module:reload(module, host) - The same, but unloads and loads the module (saving state if the module supports it)]] print [[module:unload(module, host) - The same, but just unloads the module from memory]] print [[module:list(host) - List the modules loaded on the specified host]] elseif section == "host" then print [[host:activate(hostname) - Activates the specified host]] print [[host:deactivate(hostname) - Disconnects all clients on this host and deactivates]] print [[host:list() - List the currently-activated hosts]] elseif section == "server" then print [[server:version() - Show the server's version number]] print [[server:uptime() - Show how long the server has been running]] print [[server:shutdown(reason) - Shut down the server, with an optional reason to be broadcast to all connections]] elseif section == "config" then print [[config:reload() - Reload the server configuration. Modules may need to be reloaded for changes to take effect.]] elseif section == "console" then print [[Hey! Welcome to Prosody's admin console.]] print [[First thing, if you're ever wondering how to get out, simply type 'quit'.]] print [[Secondly, note that we don't support the full telnet protocol yet (it's coming)]] print [[so you may have trouble using the arrow keys, etc. depending on your system.]] print [[]] print [[For now we offer a couple of handy shortcuts:]] print [[!! - Repeat the last command]] print [[!old!new! - repeat the last command, but with 'old' replaced by 'new']] print [[]] print [[For those well-versed in Prosody's internals, or taking instruction from those who are,]] print [[you can prefix a command with > to escape the console sandbox, and access everything in]] print [[the running server. Great fun, but be careful not to break anything :)]] end print [[]] end -- Session environment -- -- Anything in def_env will be accessible within the session as a global variable def_env.server = {}; function def_env.server:insane_reload() prosody.unlock_globals(); dofile "prosody" prosody = _G.prosody; return true, "Server reloaded"; end function def_env.server:version() return true, tostring(prosody.version or "unknown"); end function def_env.server:uptime() local t = os.time()-prosody.start_time; local seconds = t%60; t = (t - seconds)/60; local minutes = t%60; t = (t - minutes)/60; local hours = t%24; t = (t - hours)/24; local days = t; return true, string.format("This server has been running for %d day%s, %d hour%s and %d minute%s (since %s)", days, (days ~= 1 and "s") or "", hours, (hours ~= 1 and "s") or "", minutes, (minutes ~= 1 and "s") or "", os.date("%c", prosody.start_time)); end function def_env.server:shutdown(reason) prosody.shutdown(reason); return true, "Shutdown initiated"; end def_env.module = {}; local function get_hosts_set(hosts, module) if type(hosts) == "table" then if hosts[1] then return set.new(hosts); elseif hosts._items then return hosts; end elseif type(hosts) == "string" then return set.new { hosts }; elseif hosts == nil then local mm = require "modulemanager"; local hosts_set = set.new(array.collect(keys(prosody.hosts))) / function (host) return prosody.hosts[host].type == "local" or module and mm.is_loaded(host, module); end; if module and mm.get_module("*", module) then hosts_set:add("*"); end return hosts_set; end end function def_env.module:load(name, hosts, config) local mm = require "modulemanager"; hosts = get_hosts_set(hosts); -- Load the module for each host local ok, err, count, mod = true, nil, 0, nil; for host in hosts do if (not mm.is_loaded(host, name)) then mod, err = mm.load(host, name, config); if not mod then ok = false; if err == "global-module-already-loaded" then if count > 0 then ok, err, count = true, nil, 1; end break; end self.session.print(err or "Unknown error loading module"); else count = count + 1; self.session.print("Loaded for "..mod.module.host); end end end return ok, (ok and "Module loaded onto "..count.." host"..(count ~= 1 and "s" or "")) or ("Last error: "..tostring(err)); end function def_env.module:unload(name, hosts) local mm = require "modulemanager"; hosts = get_hosts_set(hosts, name); -- Unload the module for each host local ok, err, count = true, nil, 0; for host in hosts do if mm.is_loaded(host, name) then ok, err = mm.unload(host, name); if not ok then ok = false; self.session.print(err or "Unknown error unloading module"); else count = count + 1; self.session.print("Unloaded from "..host); end end end return ok, (ok and "Module unloaded from "..count.." host"..(count ~= 1 and "s" or "")) or ("Last error: "..tostring(err)); end function def_env.module:reload(name, hosts) local mm = require "modulemanager"; hosts = array.collect(get_hosts_set(hosts, name)):sort(function (a, b) if a == "*" then return true elseif b == "*" then return false else return a < b; end end); -- Reload the module for each host local ok, err, count = true, nil, 0; for _, host in ipairs(hosts) do if mm.is_loaded(host, name) then ok, err = mm.reload(host, name); if not ok then ok = false; self.session.print(err or "Unknown error reloading module"); else count = count + 1; if ok == nil then ok = true; end self.session.print("Reloaded on "..host); end end end return ok, (ok and "Module reloaded on "..count.." host"..(count ~= 1 and "s" or "")) or ("Last error: "..tostring(err)); end function def_env.module:list(hosts) if hosts == nil then hosts = array.collect(keys(prosody.hosts)); table.insert(hosts, 1, "*"); end if type(hosts) == "string" then hosts = { hosts }; end if type(hosts) ~= "table" then return false, "Please supply a host or a list of hosts you would like to see"; end local print = self.session.print; for _, host in ipairs(hosts) do print((host == "*" and "Global" or host)..":"); local modules = array.collect(keys(modulemanager.get_modules(host) or {})):sort(); if #modules == 0 then if prosody.hosts[host] then print(" No modules loaded"); else print(" Host not found"); end else for _, name in ipairs(modules) do print(" "..name); end end end end def_env.config = {}; function def_env.config:load(filename, format) local config_load = require "core.configmanager".load; local ok, err = config_load(filename, format); if not ok then return false, err or "Unknown error loading config"; end return true, "Config loaded"; end function def_env.config:get(host, section, key) local config_get = require "core.configmanager".get return true, tostring(config_get(host, section, key)); end function def_env.config:reload() local ok, err = prosody.reload_config(); return ok, (ok and "Config reloaded (you may need to reload modules to take effect)") or tostring(err); end def_env.hosts = {}; function def_env.hosts:list() for host, host_session in pairs(hosts) do self.session.print(host); end return true, "Done"; end function def_env.hosts:add(name) end def_env.c2s = {}; local function show_c2s(callback) for hostname, host in pairs(hosts) do for username, user in pairs(host.sessions or {}) do for resource, session in pairs(user.sessions or {}) do local jid = username.."@"..hostname.."/"..resource; callback(jid, session); end end end end function def_env.c2s:show(match_jid) local print, count = self.session.print, 0; local curr_host; show_c2s(function (jid, session) if curr_host ~= session.host then curr_host = session.host; print(curr_host); end if (not match_jid) or jid:match(match_jid) then count = count + 1; local status, priority = "unavailable", tostring(session.priority or "-"); if session.presence then status = session.presence:child_with_name("show"); if status then status = status:get_text() or "[invalid!]"; else status = "available"; end end print(" "..jid.." - "..status.."("..priority..")"); end end); return true, "Total: "..count.." clients"; end function def_env.c2s:show_insecure(match_jid) local print, count = self.session.print, 0; show_c2s(function (jid, session) if ((not match_jid) or jid:match(match_jid)) and not session.secure then count = count + 1; print(jid); end end); return true, "Total: "..count.." insecure client connections"; end function def_env.c2s:show_secure(match_jid) local print, count = self.session.print, 0; show_c2s(function (jid, session) if ((not match_jid) or jid:match(match_jid)) and session.secure then count = count + 1; print(jid); end end); return true, "Total: "..count.." secure client connections"; end function def_env.c2s:close(match_jid) local print, count = self.session.print, 0; show_c2s(function (jid, session) if jid == match_jid or jid_bare(jid) == match_jid then count = count + 1; session:close(); end end); return true, "Total: "..count.." sessions closed"; end def_env.s2s = {}; function def_env.s2s:show(match_jid) local _print = self.session.print; local print = self.session.print; local count_in, count_out = 0,0; for host, host_session in pairs(hosts) do print = function (...) _print(host); _print(...); print = _print; end for remotehost, session in pairs(host_session.s2sout) do if (not match_jid) or remotehost:match(match_jid) or host:match(match_jid) then count_out = count_out + 1; print(" "..host.." -> "..remotehost..(session.cert_identity_status == "valid" and " (secure)" or "")..(session.secure and " (encrypted)" or "")..(session.compressed and " (compressed)" or "")); if session.sendq then print(" There are "..#session.sendq.." queued outgoing stanzas for this connection"); end if session.type == "s2sout_unauthed" then if session.connecting then print(" Connection not yet established"); if not session.srv_hosts then if not session.conn then print(" We do not yet have a DNS answer for this host's SRV records"); else print(" This host has no SRV records, using A record instead"); end elseif session.srv_choice then print(" We are on SRV record "..session.srv_choice.." of "..#session.srv_hosts); local srv_choice = session.srv_hosts[session.srv_choice]; print(" Using "..(srv_choice.target or ".")..":"..(srv_choice.port or 5269)); end elseif session.notopen then print(" The <stream> has not yet been opened"); elseif not session.dialback_key then print(" Dialback has not been initiated yet"); elseif session.dialback_key then print(" Dialback has been requested, but no result received"); end end end end local subhost_filter = function (h) return (match_jid and h:match(match_jid)); end for session in pairs(incoming_s2s) do if session.to_host == host and ((not match_jid) or host:match(match_jid) or (session.from_host and session.from_host:match(match_jid)) -- Pft! is what I say to list comprehensions or (session.hosts and #array.collect(keys(session.hosts)):filter(subhost_filter)>0)) then count_in = count_in + 1; print(" "..host.." <- "..(session.from_host or "(unknown)")..(session.cert_identity_status == "valid" and " (secure)" or "")..(session.secure and " (encrypted)" or "")..(session.compressed and " (compressed)" or "")); if session.type == "s2sin_unauthed" then print(" Connection not yet authenticated"); end for name in pairs(session.hosts) do if name ~= session.from_host then print(" also hosts "..tostring(name)); end end end end print = _print; end for session in pairs(incoming_s2s) do if not session.to_host and ((not match_jid) or session.from_host and session.from_host:match(match_jid)) then count_in = count_in + 1; print("Other incoming s2s connections"); print(" (unknown) <- "..(session.from_host or "(unknown)")); end end return true, "Total: "..count_out.." outgoing, "..count_in.." incoming connections"; end local function print_subject(print, subject) for _, entry in ipairs(subject) do print( (" %s: %q"):format( entry.name or entry.oid, entry.value:gsub("[\r\n%z%c]", " ") ) ); end end -- As much as it pains me to use the 0-based depths that OpenSSL does, -- I think there's going to be more confusion among operators if we -- break from that. local function print_errors(print, errors) for depth, t in ipairs(errors) do print( (" %d: %s"):format( depth-1, table.concat(t, "\n| ") ) ); end end function def_env.s2s:showcert(domain) local ser = require "util.serialization".serialize; local print = self.session.print; local domain_sessions = set.new(array.collect(keys(incoming_s2s))) /function(session) return session.from_host == domain; end; for local_host in values(prosody.hosts) do local s2sout = local_host.s2sout; if s2sout and s2sout[domain] then domain_sessions:add(s2sout[domain]); end end local cert_set = {}; for session in domain_sessions do local conn = session.conn; conn = conn and conn:socket(); if not conn.getpeerchain then if conn.dohandshake then error("This version of LuaSec does not support certificate viewing"); end else local certs = conn:getpeerchain(); local cert = certs[1]; if cert then local digest = cert:digest("sha1"); if not cert_set[digest] then local chain_valid, chain_errors = conn:getpeerverification(); cert_set[digest] = { { from = session.from_host, to = session.to_host, direction = session.direction }; chain_valid = chain_valid; chain_errors = chain_errors; certs = certs; }; else table.insert(cert_set[digest], { from = session.from_host, to = session.to_host, direction = session.direction }); end end end end local domain_certs = array.collect(values(cert_set)); -- Phew. We now have a array of unique certificates presented by domain. local print = self.session.print; local n_certs = #domain_certs; if n_certs == 0 then return "No certificates found for "..domain; end local function _capitalize_and_colon(byte) return string.upper(byte)..":"; end local function pretty_fingerprint(hash) return hash:gsub("..", _capitalize_and_colon):sub(1, -2); end for cert_info in values(domain_certs) do local certs = cert_info.certs; local cert = certs[1]; print("---") print("Fingerprint (SHA1): "..pretty_fingerprint(cert:digest("sha1"))); print(""); local n_streams = #cert_info; print("Currently used on "..n_streams.." stream"..(n_streams==1 and "" or "s")..":"); for _, stream in ipairs(cert_info) do if stream.direction == "incoming" then print(" "..stream.to.." <- "..stream.from); else print(" "..stream.from.." -> "..stream.to); end end print(""); local chain_valid, errors = cert_info.chain_valid, cert_info.chain_errors; local valid_identity = cert_verify_identity(domain, "xmpp-server", cert); if chain_valid then print("Trusted certificate: Yes"); else print("Trusted certificate: No"); print_errors(print, errors); end print(""); print("Issuer: "); print_subject(print, cert:issuer()); print(""); print("Valid for "..domain..": "..(valid_identity and "Yes" or "No")); print("Subject:"); print_subject(print, cert:subject()); end print("---"); return ("Showing "..n_certs.." certificate" ..(n_certs==1 and "" or "s") .." presented by "..domain.."."); end function def_env.s2s:close(from, to) local print, count = self.session.print, 0; if not (from and to) then return false, "Syntax: s2s:close('from', 'to') - Closes all s2s sessions from 'from' to 'to'"; elseif from == to then return false, "Both from and to are the same... you can't do that :)"; end if hosts[from] and not hosts[to] then -- Is an outgoing connection local session = hosts[from].s2sout[to]; if not session then print("No outgoing connection from "..from.." to "..to) else (session.close or s2smanager.destroy_session)(session); count = count + 1; print("Closed outgoing session from "..from.." to "..to); end elseif hosts[to] and not hosts[from] then -- Is an incoming connection for session in pairs(incoming_s2s) do if session.to_host == to and session.from_host == from then (session.close or s2smanager.destroy_session)(session); count = count + 1; end end if count == 0 then print("No incoming connections from "..from.." to "..to); else print("Closed "..count.." incoming session"..((count == 1 and "") or "s").." from "..from.." to "..to); end elseif hosts[to] and hosts[from] then return false, "Both of the hostnames you specified are local, there are no s2s sessions to close"; else return false, "Neither of the hostnames you specified are being used on this server"; end return true, "Closed "..count.." s2s session"..((count == 1 and "") or "s"); end def_env.host = {}; def_env.hosts = def_env.host; function def_env.host:activate(hostname, config) return hostmanager.activate(hostname, config); end function def_env.host:deactivate(hostname, reason) return hostmanager.deactivate(hostname, reason); end function def_env.host:list() local print = self.session.print; local i = 0; for host in values(array.collect(keys(prosody.hosts)):sort()) do i = i + 1; print(host); end return true, i.." hosts"; end ------------- function printbanner(session) local option = config.get("*", "core", "console_banner"); if option == nil or option == "full" or option == "graphic" then session.print [[ ____ \ / _ | _ \ _ __ ___ ___ _-_ __| |_ _ | |_) | '__/ _ \/ __|/ _ \ / _` | | | | | __/| | | (_) \__ \ |_| | (_| | |_| | |_| |_| \___/|___/\___/ \__,_|\__, | A study in simplicity |___/ ]] end if option == nil or option == "short" or option == "full" then session.print("Welcome to the Prosody administration console. For a list of commands, type: help"); session.print("You may find more help on using this console in our online documentation at "); session.print("http://prosody.im/doc/console\n"); end if option and option ~= "short" and option ~= "full" and option ~= "graphic" then if type(option) == "string" then session.print(option) elseif type(option) == "function" then setfenv(option, redirect_output(_G, session)); pcall(option, session); end end end require "core.portmanager".register_service("console", { listener = console_listener; default_port = 5582; private = true; });