plugins/mod_admin_telnet.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 Waqas Hussain
   4 --
   5 -- This project is MIT/X11 licensed. Please see the
   6 -- COPYING file in the source package for more information.
   7 --
   8
   9 module.host = "*";
  10
  11 local _G = _G;
  12
  13 local prosody = _G.prosody;
  14 local hosts = prosody.hosts;
  15
  16 local console_listener = { default_port = 5582; default_mode = "*l"; interface = "127.0.0.1" };
  17
  18 require "util.iterators";
  19 local jid_bare = require "util.jid".bare;
  20 local set, array = require "util.set", require "util.array";
  21 local cert_verify_identity = require "util.x509".verify_identity;
  22
  23 local commands = module:shared("commands")
  24 local def_env = module:shared("env");
  25 local default_env_mt = { __index = def_env };
  26
  27 local function redirect_output(_G, session)
  28         local env = setmetatable({ print = session.print }, { __index = function (t, k) return rawget(_G, k); end });
  29         env.dofile = function(name)
  30                 local f, err = loadfile(name);
  31                 if not f then return f, err; end
  32                 return setfenv(f, env)();
  33         end;
  34         return env;
  35 end
  36
  37 console = {};
  38
  39 function console:new_session(conn)
  40         local w = function(s) conn:write(s:gsub("\n", "\r\n")); end;
  41         local session = { conn = conn;
  42                         send = function (t) w(tostring(t)); end;
  43                         print = function (...)
  44                                 local t = {};
  45                                 for i=1,select("#", ...) do
  46                                         t[i] = tostring(select(i, ...));
  47                                 end
  48                                 w("| "..table.concat(t, "\t").."\n");
  49                         end;
  50                         disconnect = function () conn:close(); end;
  51                         };
  52         session.env = setmetatable({}, default_env_mt);
  53
  54         -- Load up environment with helper objects
  55         for name, t in pairs(def_env) do
  56                 if type(t) == "table" then
  57                         session.env[name] = setmetatable({ session = session }, { __index = t });
  58                 end
  59         end
  60
  61         return session;
  62 end
  63
  64 local sessions = {};
  65
  66 function console_listener.onconnect(conn)
  67         -- Handle new connection
  68         local session = console:new_session(conn);
  69         sessions[conn] = session;
  70         printbanner(session);
  71         session.send(string.char(0));
  72 end
  73
  74 function console_listener.onincoming(conn, data)
  75         local session = sessions[conn];
  76
  77         -- Handle data
  78         (function(session, data)
  79                 local useglobalenv;
  80
  81                 if data:match("^>") then
  82                         data = data:gsub("^>", "");
  83                         useglobalenv = true;
  84                 elseif data == "\004" then
  85                         commands["bye"](session, data);
  86                         return;
  87                 else
  88                         local command = data:lower();
  89                         command = data:match("^%w+") or data:match("%p");
  90                         if commands[command] then
  91                                 commands[command](session, data);
  92                                 return;
  93                         end
  94                 end
  95
  96                 session.env._ = data;
  97
  98                 local chunkname = "=console";
  99                 local chunk, err = loadstring("return "..data, chunkname);
 100                 if not chunk then
 101                         chunk, err = loadstring(data, chunkname);
 102                         if not chunk then
 103                                 err = err:gsub("^%[string .-%]:%d+: ", "");
 104                                 err = err:gsub("^:%d+: ", "");
 105                                 err = err:gsub("'<eof>'", "the end of the line");
 106                                 session.print("Sorry, I couldn't understand that... "..err);
 107                                 return;
 108                         end
 109                 end
 110
 111                 setfenv(chunk, (useglobalenv and redirect_output(_G, session)) or session.env or nil);
 112
 113                 local ranok, taskok, message = pcall(chunk);
 114
 115                 if not (ranok or message or useglobalenv) and commands[data:lower()] then
 116                         commands[data:lower()](session, data);
 117                         return;
 118                 end
 119
 120                 if not ranok then
 121                         session.print("Fatal error while running command, it did not complete");
 122                         session.print("Error: "..taskok);
 123                         return;
 124                 end
 125
 126                 if not message then
 127                         session.print("Result: "..tostring(taskok));
 128                         return;
 129                 elseif (not taskok) and message then
 130                         session.print("Command completed with a problem");
 131                         session.print("Message: "..tostring(message));
 132                         return;
 133                 end
 134
 135                 session.print("OK: "..tostring(message));
 136         end)(session, data);
 137
 138         session.send(string.char(0));
 139 end
 140
 141 function console_listener.ondisconnect(conn, err)
 142         local session = sessions[conn];
 143         if session then
 144                 session.disconnect();
 145                 sessions[conn] = nil;
 146         end
 147 end
 148
 149 -- Console commands --
 150 -- These are simple commands, not valid standalone in Lua
 151
 152 function commands.bye(session)
 153         session.print("See you! :)");
 154         session.disconnect();
 155 end
 156 commands.quit, commands.exit = commands.bye, commands.bye;
 157
 158 commands["!"] = function (session, data)
 159         if data:match("^!!") and session.env._ then
 160                 session.print("!> "..session.env._);
 161                 return console_listener.onincoming(session.conn, session.env._);
 162         end
 163         local old, new = data:match("^!(.-[^\\])!(.-)!$");
 164         if old and new then
 165                 local ok, res = pcall(string.gsub, session.env._, old, new);
 166                 if not ok then
 167                         session.print(res)
 168                         return;
 169                 end
 170                 session.print("!> "..res);
 171                 return console_listener.onincoming(session.conn, res);
 172         end
 173         session.print("Sorry, not sure what you want");
 174 end
 175
 176
 177 function commands.help(session, data)
 178         local print = session.print;
 179         local section = data:match("^help (%w+)");
 180         if not section then
 181                 print [[Commands are divided into multiple sections. For help on a particular section, ]]
 182                 print [[type: help SECTION (for example, 'help c2s'). Sections are: ]]
 183                 print [[]]
 184                 print [[c2s - Commands to manage local client-to-server sessions]]
 185                 print [[s2s - Commands to manage sessions between this server and others]]
 186                 print [[module - Commands to load/reload/unload modules/plugins]]
 187                 print [[host - Commands to activate, deactivate and list virtual hosts]]
 188                 print [[server - Uptime, version, shutting down, etc.]]
 189                 print [[config - Reloading the configuration, etc.]]
 190                 print [[console - Help regarding the console itself]]
 191         elseif section == "c2s" then
 192                 print [[c2s:show(jid) - Show all client sessions with the specified JID (or all if no JID given)]]
 193                 print [[c2s:show_insecure() - Show all unencrypted client connections]]
 194                 print [[c2s:show_secure() - Show all encrypted client connections]]
 195                 print [[c2s:close(jid) - Close all sessions for the specified JID]]
 196         elseif section == "s2s" then
 197                 print [[s2s:show(domain) - Show all s2s connections for the given domain (or all if no domain given)]]
 198                 print [[s2s:close(from, to) - Close a connection from one domain to another]]
 199         elseif section == "module" then
 200                 print [[module:load(module, host) - Load the specified module on the specified host (or all hosts if none given)]]
 201                 print [[module:reload(module, host) - The same, but unloads and loads the module (saving state if the module supports it)]]
 202                 print [[module:unload(module, host) - The same, but just unloads the module from memory]]
 203                 print [[module:list(host) - List the modules loaded on the specified host]]
 204         elseif section == "host" then
 205                 print [[host:activate(hostname) - Activates the specified host]]
 206                 print [[host:deactivate(hostname) - Disconnects all clients on this host and deactivates]]
 207                 print [[host:list() - List the currently-activated hosts]]
 208         elseif section == "server" then
 209                 print [[server:version() - Show the server's version number]]
 210                 print [[server:uptime() - Show how long the server has been running]]
 211                 print [[server:shutdown(reason) - Shut down the server, with an optional reason to be broadcast to all connections]]
 212         elseif section == "config" then
 213                 print [[config:reload() - Reload the server configuration. Modules may need to be reloaded for changes to take effect.]]
 214         elseif section == "console" then
 215                 print [[Hey! Welcome to Prosody's admin console.]]
 216                 print [[First thing, if you're ever wondering how to get out, simply type 'quit'.]]
 217                 print [[Secondly, note that we don't support the full telnet protocol yet (it's coming)]]
 218                 print [[so you may have trouble using the arrow keys, etc. depending on your system.]]
 219                 print [[]]
 220                 print [[For now we offer a couple of handy shortcuts:]]
 221                 print [[!! - Repeat the last command]]
 222                 print [[!old!new! - repeat the last command, but with 'old' replaced by 'new']]
 223                 print [[]]
 224                 print [[For those well-versed in Prosody's internals, or taking instruction from those who are,]]
 225                 print [[you can prefix a command with > to escape the console sandbox, and access everything in]]
 226                 print [[the running server. Great fun, but be careful not to break anything :)]]
 227         end
 228         print [[]]
 229 end
 230
 231 -- Session environment --
 232 -- Anything in def_env will be accessible within the session as a global variable
 233
 234 def_env.server = {};
 235
 236 function def_env.server:insane_reload()
 237         prosody.unlock_globals();
 238         dofile "prosody"
 239         prosody = _G.prosody;
 240         return true, "Server reloaded";
 241 end
 242
 243 function def_env.server:version()
 244         return true, tostring(prosody.version or "unknown");
 245 end
 246
 247 function def_env.server:uptime()
 248         local t = os.time()-prosody.start_time;
 249         local seconds = t%60;
 250         t = (t - seconds)/60;
 251         local minutes = t%60;
 252         t = (t - minutes)/60;
 253         local hours = t%24;
 254         t = (t - hours)/24;
 255         local days = t;
 256         return true, string.format("This server has been running for %d day%s, %d hour%s and %d minute%s (since %s)",
 257                 days, (days ~= 1 and "s") or "", hours, (hours ~= 1 and "s") or "",
 258                 minutes, (minutes ~= 1 and "s") or "", os.date("%c", prosody.start_time));
 259 end
 260
 261 function def_env.server:shutdown(reason)
 262         prosody.shutdown(reason);
 263         return true, "Shutdown initiated";
 264 end
 265
 266 def_env.module = {};
 267
 268 local function get_hosts_set(hosts, module)
 269         if type(hosts) == "table" then
 270                 if hosts[1] then
 271                         return set.new(hosts);
 272                 elseif hosts._items then
 273                         return hosts;
 274                 end
 275         elseif type(hosts) == "string" then
 276                 return set.new { hosts };
 277         elseif hosts == nil then
 278                 local mm = require "modulemanager";
 279                 return set.new(array.collect(keys(prosody.hosts)))
 280                         / function (host) return prosody.hosts[host].type == "local" or module and mm.is_loaded(host, module); end;
 281         end
 282 end
 283
 284 function def_env.module:load(name, hosts, config)
 285         local mm = require "modulemanager";
 286
 287         hosts = get_hosts_set(hosts);
 288
 289         -- Load the module for each host
 290         local ok, err, count = true, nil, 0;
 291         for host in hosts do
 292                 if (not mm.is_loaded(host, name)) then
 293                         ok, err = mm.load(host, name, config);
 294                         if not ok then
 295                                 ok = false;
 296                                 self.session.print(err or "Unknown error loading module");
 297                         else
 298                                 count = count + 1;
 299                                 self.session.print("Loaded for "..host);
 300                         end
 301                 end
 302         end
 303
 304         return ok, (ok and "Module loaded onto "..count.." host"..(count ~= 1 and "s" or "")) or ("Last error: "..tostring(err));
 305 end
 306
 307 function def_env.module:unload(name, hosts)
 308         local mm = require "modulemanager";
 309
 310         hosts = get_hosts_set(hosts, name);
 311
 312         -- Unload the module for each host
 313         local ok, err, count = true, nil, 0;
 314         for host in hosts do
 315                 if mm.is_loaded(host, name) then
 316                         ok, err = mm.unload(host, name);
 317                         if not ok then
 318                                 ok = false;
 319                                 self.session.print(err or "Unknown error unloading module");
 320                         else
 321                                 count = count + 1;
 322                                 self.session.print("Unloaded from "..host);
 323                         end
 324                 end
 325         end
 326         return ok, (ok and "Module unloaded from "..count.." host"..(count ~= 1 and "s" or "")) or ("Last error: "..tostring(err));
 327 end
 328
 329 function def_env.module:reload(name, hosts)
 330         local mm = require "modulemanager";
 331
 332         hosts = get_hosts_set(hosts, name);
 333
 334         -- Reload the module for each host
 335         local ok, err, count = true, nil, 0;
 336         for host in hosts do
 337                 if mm.is_loaded(host, name) then
 338                         ok, err = mm.reload(host, name);
 339                         if not ok then
 340                                 ok = false;
 341                                 self.session.print(err or "Unknown error reloading module");
 342                         else
 343                                 count = count + 1;
 344                                 if ok == nil then
 345                                         ok = true;
 346                                 end
 347                                 self.session.print("Reloaded on "..host);
 348                         end
 349                 end
 350         end
 351         return ok, (ok and "Module reloaded on "..count.." host"..(count ~= 1 and "s" or "")) or ("Last error: "..tostring(err));
 352 end
 353
 354 function def_env.module:list(hosts)
 355         if hosts == nil then
 356                 hosts = array.collect(keys(prosody.hosts));
 357         end
 358         if type(hosts) == "string" then
 359                 hosts = { hosts };
 360         end
 361         if type(hosts) ~= "table" then
 362                 return false, "Please supply a host or a list of hosts you would like to see";
 363         end
 364
 365         local print = self.session.print;
 366         for _, host in ipairs(hosts) do
 367                 print(host..":");
 368                 local modules = array.collect(keys(prosody.hosts[host] and prosody.hosts[host].modules or {})):sort();
 369                 if #modules == 0 then
 370                         if prosody.hosts[host] then
 371                                 print("    No modules loaded");
 372                         else
 373                                 print("    Host not found");
 374                         end
 375                 else
 376                         for _, name in ipairs(modules) do
 377                                 print("    "..name);
 378                         end
 379                 end
 380         end
 381 end
 382
 383 def_env.config = {};
 384 function def_env.config:load(filename, format)
 385         local config_load = require "core.configmanager".load;
 386         local ok, err = config_load(filename, format);
 387         if not ok then
 388                 return false, err or "Unknown error loading config";
 389         end
 390         return true, "Config loaded";
 391 end
 392
 393 function def_env.config:get(host, section, key)
 394         local config_get = require "core.configmanager".get
 395         return true, tostring(config_get(host, section, key));
 396 end
 397
 398 function def_env.config:reload()
 399         local ok, err = prosody.reload_config();
 400         return ok, (ok and "Config reloaded (you may need to reload modules to take effect)") or tostring(err);
 401 end
 402
 403 def_env.hosts = {};
 404 function def_env.hosts:list()
 405         for host, host_session in pairs(hosts) do
 406                 self.session.print(host);
 407         end
 408         return true, "Done";
 409 end
 410
 411 function def_env.hosts:add(name)
 412 end
 413
 414 def_env.c2s = {};
 415
 416 local function show_c2s(callback)
 417         for hostname, host in pairs(hosts) do
 418                 for username, user in pairs(host.sessions or {}) do
 419                         for resource, session in pairs(user.sessions or {}) do
 420                                 local jid = username.."@"..hostname.."/"..resource;
 421                                 callback(jid, session);
 422                         end
 423                 end
 424         end
 425 end
 426
 427 function def_env.c2s:show(match_jid)
 428         local print, count = self.session.print, 0;
 429         local curr_host;
 430         show_c2s(function (jid, session)
 431                 if curr_host ~= session.host then
 432                         curr_host = session.host;
 433                         print(curr_host);
 434                 end
 435                 if (not match_jid) or jid:match(match_jid) then
 436                         count = count + 1;
 437                         local status, priority = "unavailable", tostring(session.priority or "-");
 438                         if session.presence then
 439                                 status = session.presence:child_with_name("show");
 440                                 if status then
 441                                         status = status:get_text() or "[invalid!]";
 442                                 else
 443                                         status = "available";
 444                                 end
 445                         end
 446                         print("   "..jid.." - "..status.."("..priority..")");
 447                 end
 448         end);
 449         return true, "Total: "..count.." clients";
 450 end
 451
 452 function def_env.c2s:show_insecure(match_jid)
 453         local print, count = self.session.print, 0;
 454         show_c2s(function (jid, session)
 455                 if ((not match_jid) or jid:match(match_jid)) and not session.secure then
 456                         count = count + 1;
 457                         print(jid);
 458                 end
 459         end);
 460         return true, "Total: "..count.." insecure client connections";
 461 end
 462
 463 function def_env.c2s:show_secure(match_jid)
 464         local print, count = self.session.print, 0;
 465         show_c2s(function (jid, session)
 466                 if ((not match_jid) or jid:match(match_jid)) and session.secure then
 467                         count = count + 1;
 468                         print(jid);
 469                 end
 470         end);
 471         return true, "Total: "..count.." secure client connections";
 472 end
 473
 474 function def_env.c2s:close(match_jid)
 475         local print, count = self.session.print, 0;
 476         show_c2s(function (jid, session)
 477                 if jid == match_jid or jid_bare(jid) == match_jid then
 478                         count = count + 1;
 479                         session:close();
 480                 end
 481         end);
 482         return true, "Total: "..count.." sessions closed";
 483 end
 484
 485 def_env.s2s = {};
 486 function def_env.s2s:show(match_jid)
 487         local _print = self.session.print;
 488         local print = self.session.print;
 489
 490         local count_in, count_out = 0,0;
 491
 492         for host, host_session in pairs(hosts) do
 493                 print = function (...) _print(host); _print(...); print = _print; end
 494                 for remotehost, session in pairs(host_session.s2sout) do
 495                         if (not match_jid) or remotehost:match(match_jid) or host:match(match_jid) then
 496                                 count_out = count_out + 1;
 497                                 print("    "..host.." -> "..remotehost..(session.cert_identity_status == "valid" and " (secure)" or "")..(session.secure and " (encrypted)" or "")..(session.compressed and " (compressed)" or ""));
 498                                 if session.sendq then
 499                                         print("        There are "..#session.sendq.." queued outgoing stanzas for this connection");
 500                                 end
 501                                 if session.type == "s2sout_unauthed" then
 502                                         if session.connecting then
 503                                                 print("        Connection not yet established");
 504                                                 if not session.srv_hosts then
 505                                                         if not session.conn then
 506                                                                 print("        We do not yet have a DNS answer for this host's SRV records");
 507                                                         else
 508                                                                 print("        This host has no SRV records, using A record instead");
 509                                                         end
 510                                                 elseif session.srv_choice then
 511                                                         print("        We are on SRV record "..session.srv_choice.." of "..#session.srv_hosts);
 512                                                         local srv_choice = session.srv_hosts[session.srv_choice];
 513                                                         print("        Using "..(srv_choice.target or ".")..":"..(srv_choice.port or 5269));
 514                                                 end
 515                                         elseif session.notopen then
 516                                                 print("        The <stream> has not yet been opened");
 517                                         elseif not session.dialback_key then
 518                                                 print("        Dialback has not been initiated yet");
 519                                         elseif session.dialback_key then
 520                                                 print("        Dialback has been requested, but no result received");
 521                                         end
 522                                 end
 523                         end
 524                 end
 525                 local subhost_filter = function (h)
 526                                 return (match_jid and h:match(match_jid));
 527                         end
 528                 for session in pairs(incoming_s2s) do
 529                         if session.to_host == host and ((not match_jid) or host:match(match_jid)
 530                                 or (session.from_host and session.from_host:match(match_jid))
 531                                 -- Pft! is what I say to list comprehensions
 532                                 or (session.hosts and #array.collect(keys(session.hosts)):filter(subhost_filter)>0)) then
 533                                 count_in = count_in + 1;
 534                                 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 ""));
 535                                 if session.type == "s2sin_unauthed" then
 536                                                 print("        Connection not yet authenticated");
 537                                 end
 538                                 for name in pairs(session.hosts) do
 539                                         if name ~= session.from_host then
 540                                                 print("        also hosts "..tostring(name));
 541                                         end
 542                                 end
 543                         end
 544                 end
 545
 546                 print = _print;
 547         end
 548
 549         for session in pairs(incoming_s2s) do
 550                 if not session.to_host and ((not match_jid) or session.from_host and session.from_host:match(match_jid)) then
 551                         count_in = count_in + 1;
 552                         print("Other incoming s2s connections");
 553                         print("    (unknown) <- "..(session.from_host or "(unknown)"));
 554                 end
 555         end
 556
 557         return true, "Total: "..count_out.." outgoing, "..count_in.." incoming connections";
 558 end
 559
 560 local function print_subject(print, subject)
 561         for _, entry in ipairs(subject) do
 562                 print(
 563                         ("    %s: %q"):format(
 564                                 entry.name or entry.oid,
 565                                 entry.value:gsub("[\r\n%z%c]", " ")
 566                         )
 567                 );
 568         end
 569 end
 570
 571 -- As much as it pains me to use the 0-based depths that OpenSSL does,
 572 -- I think there's going to be more confusion among operators if we
 573 -- break from that.
 574 local function print_errors(print, errors)
 575         for depth, t in ipairs(errors) do
 576                 print(
 577                         ("    %d: %s"):format(
 578                                 depth-1,
 579                                 table.concat(t, "\n|        ")
 580                         )
 581                 );
 582         end
 583 end
 584
 585 function def_env.s2s:showcert(domain)
 586         local ser = require "util.serialization".serialize;
 587         local print = self.session.print;
 588         local domain_sessions = set.new(array.collect(keys(incoming_s2s)))
 589                 /function(session) return session.from_host == domain; end;
 590         for local_host in values(prosody.hosts) do
 591                 local s2sout = local_host.s2sout;
 592                 if s2sout and s2sout[domain] then
 593                         domain_sessions:add(s2sout[domain]);
 594                 end
 595         end
 596         local cert_set = {};
 597         for session in domain_sessions do
 598                 local conn = session.conn;
 599                 conn = conn and conn:socket();
 600                 if not conn.getpeerchain then
 601                         if conn.dohandshake then
 602                                 error("This version of LuaSec does not support certificate viewing");
 603                         end
 604                 else
 605                         local certs = conn:getpeerchain();
 606                         local cert = certs[1];
 607                         if cert then
 608                                 local digest = cert:digest("sha1");
 609                                 if not cert_set[digest] then
 610                                         local chain_valid, chain_errors = conn:getpeerverification();
 611                                         cert_set[digest] = {
 612                                                 {
 613                                                   from = session.from_host,
 614                                                   to = session.to_host,
 615                                                   direction = session.direction
 616                                                 };
 617                                                 chain_valid = chain_valid;
 618                                                 chain_errors = chain_errors;
 619                                                 certs = certs;
 620                                         };
 621                                 else
 622                                         table.insert(cert_set[digest], {
 623                                                 from = session.from_host,
 624                                                 to = session.to_host,
 625                                                 direction = session.direction
 626                                         });
 627                                 end
 628                         end
 629                 end
 630         end
 631         local domain_certs = array.collect(values(cert_set));
 632         -- Phew. We now have a array of unique certificates presented by domain.
 633         local print = self.session.print;
 634         local n_certs = #domain_certs;
 635
 636         if n_certs == 0 then
 637                 return "No certificates found for "..domain;
 638         end
 639
 640         local function _capitalize_and_colon(byte)
 641                 return string.upper(byte)..":";
 642         end
 643         local function pretty_fingerprint(hash)
 644                 return hash:gsub("..", _capitalize_and_colon):sub(1, -2);
 645         end
 646
 647         for cert_info in values(domain_certs) do
 648                 local certs = cert_info.certs;
 649                 local cert = certs[1];
 650                 print("---")
 651                 print("Fingerprint (SHA1): "..pretty_fingerprint(cert:digest("sha1")));
 652                 print("");
 653                 local n_streams = #cert_info;
 654                 print("Currently used on "..n_streams.." stream"..(n_streams==1 and "" or "s")..":");
 655                 for _, stream in ipairs(cert_info) do
 656                         if stream.direction == "incoming" then
 657                                 print("    "..stream.to.." <- "..stream.from);
 658                         else
 659                                 print("    "..stream.from.." -> "..stream.to);
 660                         end
 661                 end
 662                 print("");
 663                 local chain_valid, errors = cert_info.chain_valid, cert_info.chain_errors;
 664                 local valid_identity = cert_verify_identity(domain, "xmpp-server", cert);
 665                 if chain_valid then
 666                         print("Trusted certificate: Yes");
 667                 else
 668                         print("Trusted certificate: No");
 669                         print_errors(print, errors);
 670                 end
 671                 print("");
 672                 print("Issuer: ");
 673                 print_subject(print, cert:issuer());
 674                 print("");
 675                 print("Valid for "..domain..": "..(valid_identity and "Yes" or "No"));
 676                 print("Subject:");
 677                 print_subject(print, cert:subject());
 678         end
 679         print("---");
 680         return ("Showing "..n_certs.." certificate"
 681                 ..(n_certs==1 and "" or "s")
 682                 .." presented by "..domain..".");
 683 end
 684
 685 function def_env.s2s:close(from, to)
 686         local print, count = self.session.print, 0;
 687
 688         if not (from and to) then
 689                 return false, "Syntax: s2s:close('from', 'to') - Closes all s2s sessions from 'from' to 'to'";
 690         elseif from == to then
 691                 return false, "Both from and to are the same... you can't do that :)";
 692         end
 693
 694         if hosts[from] and not hosts[to] then
 695                 -- Is an outgoing connection
 696                 local session = hosts[from].s2sout[to];
 697                 if not session then
 698                         print("No outgoing connection from "..from.." to "..to)
 699                 else
 700                         (session.close or s2smanager.destroy_session)(session);
 701                         count = count + 1;
 702                         print("Closed outgoing session from "..from.." to "..to);
 703                 end
 704         elseif hosts[to] and not hosts[from] then
 705                 -- Is an incoming connection
 706                 for session in pairs(incoming_s2s) do
 707                         if session.to_host == to and session.from_host == from then
 708                                 (session.close or s2smanager.destroy_session)(session);
 709                                 count = count + 1;
 710                         end
 711                 end
 712
 713                 if count == 0 then
 714                         print("No incoming connections from "..from.." to "..to);
 715                 else
 716                         print("Closed "..count.." incoming session"..((count == 1 and "") or "s").." from "..from.." to "..to);
 717                 end
 718         elseif hosts[to] and hosts[from] then
 719                 return false, "Both of the hostnames you specified are local, there are no s2s sessions to close";
 720         else
 721                 return false, "Neither of the hostnames you specified are being used on this server";
 722         end
 723
 724         return true, "Closed "..count.." s2s session"..((count == 1 and "") or "s");
 725 end
 726
 727 def_env.host = {}; def_env.hosts = def_env.host;
 728
 729 function def_env.host:activate(hostname, config)
 730         return hostmanager.activate(hostname, config);
 731 end
 732 function def_env.host:deactivate(hostname, reason)
 733         return hostmanager.deactivate(hostname, reason);
 734 end
 735
 736 function def_env.host:list()
 737         local print = self.session.print;
 738         local i = 0;
 739         for host in values(array.collect(keys(prosody.hosts)):sort()) do
 740                 i = i + 1;
 741                 print(host);
 742         end
 743         return true, i.." hosts";
 744 end
 745
 746 -------------
 747
 748 function printbanner(session)
 749         local option = config.get("*", "core", "console_banner");
 750 if option == nil or option == "full" or option == "graphic" then
 751 session.print [[
 752                    ____                \   /     _
 753                     |  _ \ _ __ ___  ___  _-_   __| |_   _
 754                     | |_) | '__/ _ \/ __|/ _ \ / _` | | | |
 755                     |  __/| | | (_) \__ \ |_| | (_| | |_| |
 756                     |_|   |_|  \___/|___/\___/ \__,_|\__, |
 757                     A study in simplicity            |___/
 758
 759 ]]
 760 end
 761 if option == nil or option == "short" or option == "full" then
 762 session.print("Welcome to the Prosody administration console. For a list of commands, type: help");
 763 session.print("You may find more help on using this console in our online documentation at ");
 764 session.print("http://prosody.im/doc/console\n");
 765 end
 766 if option and option ~= "short" and option ~= "full" and option ~= "graphic" then
 767         if type(option) == "string" then
 768                 session.print(option)
 769         elseif type(option) == "function" then
 770                 setfenv(option, redirect_output(_G, session));
 771                 pcall(option, session);
 772         end
 773 end
 774 end
 775
 776 require "core.portmanager".register_service("console", {
 777         listener = console_listener;
 778         default_port = 5582;
 779         private = true;
 780 });