tools/migration/migrator/prosody_files: Fix undefined global access of ?error?, print...
[prosody.git] / prosody
diff --git a/prosody b/prosody
index 4984ed15f906fa766d4c3781f7852da1f45b68f1..ee2baca500062bb3b5bf293ce1b65810b9d9cbbe 100755 (executable)
--- a/prosody
+++ b/prosody
@@ -1,12 +1,14 @@
 #!/usr/bin/env lua
 -- Prosody IM
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- 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.
 --
 
+-- prosody - main executable for Prosody XMPP server
+
 -- Will be modified by configure script if run --
 
 CFG_SOURCEDIR=os.getenv("PROSODY_SRCDIR");
@@ -14,39 +16,91 @@ CFG_CONFIGDIR=os.getenv("PROSODY_CFGDIR");
 CFG_PLUGINDIR=os.getenv("PROSODY_PLUGINDIR");
 CFG_DATADIR=os.getenv("PROSODY_DATADIR");
 
--- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- --
+-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 
-if CFG_SOURCEDIR then
-       package.path = CFG_SOURCEDIR.."/?.lua;"..package.path;
-       package.cpath = CFG_SOURCEDIR.."/?.so;"..package.cpath;
+local function is_relative(path)
+       local path_sep = package.config:sub(1,1);
+        return ((path_sep == "/" and path:sub(1,1) ~= "/")
+       or (path_sep == "\\" and (path:sub(1,1) ~= "/" and path:sub(2,3) ~= ":\\")))
 end
 
-package.path = package.path..";"..(CFG_SOURCEDIR or ".").."/fallbacks/?.lua";
-package.cpath = package.cpath..";"..(CFG_SOURCEDIR or ".").."/fallbacks/?.so";
+-- Tell Lua where to find our libraries
+if CFG_SOURCEDIR then
+       local function filter_relative_paths(path)
+               if is_relative(path) then return ""; end
+       end
+       local function sanitise_paths(paths)
+               return (paths:gsub("[^;]+;?", filter_relative_paths):gsub(";;+", ";"));
+       end
+       package.path = sanitise_paths(CFG_SOURCEDIR.."/?.lua;"..package.path);
+       package.cpath = sanitise_paths(CFG_SOURCEDIR.."/?.so;"..package.cpath);
+end
 
+-- Substitute ~ with path to home directory in data path
 if CFG_DATADIR then
        if os.getenv("HOME") then
                CFG_DATADIR = CFG_DATADIR:gsub("^~", os.getenv("HOME"));
        end
 end
 
--- Required to be able to find packages installed with luarocks
-pcall(require, "luarocks.require")
+-- Global 'prosody' object
+local prosody = { events = require "util.events".new(); };
+_G.prosody = prosody;
 
+-- Check dependencies
+local dependencies = require "util.dependencies";
+if not dependencies.check_dependencies() then
+       os.exit(1);
+end
 
+-- Load the config-parsing module
 config = require "core.configmanager"
 
-do
-       -- TODO: Check for other formats when we add support for them
-       -- Use lfs? Make a new conf/ dir?
-       local ok, level, err = config.load((CFG_CONFIGDIR or ".").."/prosody.cfg.lua");
+-- -- -- --
+-- Define the functions we call during startup, the 
+-- actual startup happens right at the end, where these
+-- functions get called
+
+function read_config()
+       local filenames = {};
+       
+       local filename;
+       if arg[1] == "--config" and arg[2] then
+               table.insert(filenames, arg[2]);
+               if CFG_CONFIGDIR then
+                       table.insert(filenames, CFG_CONFIGDIR.."/"..arg[2]);
+               end
+       elseif os.getenv("PROSODY_CONFIG") then -- Passed by prosodyctl
+                       table.insert(filenames, os.getenv("PROSODY_CONFIG"));
+       else
+               for _, format in ipairs(config.parsers()) do
+                       table.insert(filenames, (CFG_CONFIGDIR or ".").."/prosody.cfg."..format);
+               end
+       end
+       for _,_filename in ipairs(filenames) do
+               filename = _filename;
+               local file = io.open(filename);
+               if file then
+                       file:close();
+                       CFG_CONFIGDIR = filename:match("^(.*)[\\/][^\\/]*$");
+                       break;
+               end
+       end
+       prosody.config_file = filename
+       local ok, level, err = config.load(filename);
        if not ok then
                print("\n");
                print("**************************");
                if level == "parser" then
-                       print("A problem occured while reading the config file "..(CFG_CONFIGDIR or ".").."/prosody.cfg.lua");
+                       print("A problem occured while reading the config file "..(CFG_CONFIGDIR or ".").."/prosody.cfg.lua"..":");
+                       print("");
                        local err_line, err_message = tostring(err):match("%[string .-%]:(%d*): (.*)");
-                       print("Error"..(err_line and (" on line "..err_line) or "")..": "..(err_message or tostring(err)));
+                       if err:match("chunk has too many syntax levels$") then
+                               print("An Include statement in a config file is including an already-included");
+                               print("file and causing an infinite loop. An Include statement in a config file is...");
+                       else
+                               print("Error"..(err_line and (" on line "..err_line) or "")..": "..(err_message or tostring(err)));
+                       end
                        print("");
                elseif level == "file" then
                        print("Prosody was unable to find the configuration file.");
@@ -62,236 +116,294 @@ do
        end
 end
 
---- Initialize logging
-require "core.loggingmanager"
-
---- Check runtime dependencies
-require "util.dependencies"
-
---- Load socket framework
-local server = require "net.server"
-
-bare_sessions = {};
-full_sessions = {};
-hosts = {};
+function load_libraries()
+       -- Load socket framework
+       server = require "net.server"
+end    
 
--- Global 'prosody' object
-prosody = {};
-local prosody = prosody;
-
-prosody.bare_sessions = bare_sessions;
-prosody.full_sessions = full_sessions;
-prosody.hosts = hosts;
-
-prosody.paths = { source = CFG_SOURCEDIR, config = CFG_CONFIGDIR, 
-                  plugins = CFG_PLUGINDIR, data = CFG_DATADIR };
-
-prosody.arg = arg;
+function init_logging()
+       -- Initialize logging
+       require "core.loggingmanager"
+end
 
-prosody.events = require "util.events".new();
+function log_dependency_warnings()
+       dependencies.log_warnings();
+end
 
--- Try to determine version
-local version_file = io.open((CFG_SOURCEDIR or ".").."/prosody.version");
-if version_file then
-       prosody.version = version_file:read("*a"):gsub("%s*$", "");
-       version_file:close();
-       if #prosody.version == 12 and prosody.version:match("^[a-f0-9]+$") then
-               prosody.version = "hg:"..prosody.version;
+function sanity_check()
+       for host, host_config in pairs(config.getconfig()) do
+               if host ~= "*"
+               and host_config.enabled ~= false
+               and not host_config.component_module then
+                       return;
+               end
        end
-else
-       prosody.version = "unknown";
+       log("error", "No enabled VirtualHost entries found in the config file.");
+       log("error", "At least one active host is required for Prosody to function. Exiting...");
+       os.exit(1);
 end
 
-log("info", "Hello and welcome to Prosody version %s", prosody.version);
-
---- Load and initialise core modules
-require "util.import"
-require "core.xmlhandlers"
-require "core.rostermanager"
-require "core.eventmanager"
-require "core.hostmanager"
-require "core.modulemanager"
-require "core.usermanager"
-require "core.sessionmanager"
-require "core.stanza_router"
-
-require "util.array"
-require "util.iterators"
-require "util.timer"
-
--- Commented to protect us from 
--- the second kind of people
---[[ 
-pcall(require, "remdebug.engine");
-if remdebug then remdebug.engine.start() end
-]]
-
-local cl = require "net.connlisteners";
-
-require "util.stanza"
-require "util.jid"
-
-------------------------------------------------------------------------
-
-
-------------- Begin code without a home ---------------------
-
-local data_path = config.get("*", "core", "data_path") or CFG_DATADIR or "data";
-require "util.datamanager".set_data_path(data_path);
-require "util.datamanager".add_callback(function(username, host, datastore, data)
-       if config.get(host, "core", "anonymous_login") then
-               return false;
+function sandbox_require()
+       -- Replace require() with one that doesn't pollute _G, required
+       -- for neat sandboxing of modules
+       local _realG = _G;
+       local _real_require = require;
+       if not getfenv then
+               -- FIXME: This is a hack to replace getfenv() in Lua 5.2
+               function getfenv(f) return debug.getupvalue(debug.getinfo(f or 1).func, 1); end
        end
-       return username, host, datastore, data;
-end);
-
------------ End of out-of-place code --------------
-
--- Function to reload the config file
-function prosody.reload_config()
-       log("info", "Reloading configuration file");
-       prosody.events.fire_event("reloading-config");
-       local ok, level, err = config.load((rawget(_G, "CFG_CONFIGDIR") or ".").."/prosody.cfg.lua");
-       if not ok then
-               if level == "parser" then
-                       log("error", "There was an error parsing the configuration file: %s", tostring(err));
-               elseif level == "file" then
-                       log("error", "Couldn't read the config file when trying to reload: %s", tostring(err));
+       function require(...)
+               local curr_env = getfenv(2);
+               local curr_env_mt = getmetatable(curr_env);
+               local _realG_mt = getmetatable(_realG);
+               if curr_env_mt and curr_env_mt.__index and not curr_env_mt.__newindex and _realG_mt then
+                       local old_newindex, old_index;
+                       old_newindex, _realG_mt.__newindex = _realG_mt.__newindex, curr_env;
+                       old_index, _realG_mt.__index = _realG_mt.__index, function (_G, k)
+                               return rawget(curr_env, k);
+                       end;
+                       local ret = _real_require(...);
+                       _realG_mt.__newindex = old_newindex;
+                       _realG_mt.__index = old_index;
+                       return ret;
                end
+               return _real_require(...);
        end
 end
 
--- Function to reopen logfiles
-function prosody.reopen_logfiles()
-       log("info", "Re-opening log files");
-       eventmanager.fire_event("reopen-log-files"); -- Handled by appropriate log sinks
-       prosody.events.fire_event("reopen-log-files");
+function set_function_metatable()
+       local mt = {};
+       function mt.__index(f, upvalue)
+               local i, name, value = 0;
+               repeat
+                       i = i + 1;
+                       name, value = debug.getupvalue(f, i);
+               until name == upvalue or name == nil;
+               return value;
+       end
+       function mt.__newindex(f, upvalue, value)
+               local i, name = 0;
+               repeat
+                       i = i + 1;
+                       name = debug.getupvalue(f, i);
+               until name == upvalue or name == nil;
+               if name then
+                       debug.setupvalue(f, i, value);
+               end
+       end
+       function mt.__tostring(f)
+               local info = debug.getinfo(f);
+               return ("function(%s:%d)"):format(info.short_src:match("[^\\/]*$"), info.linedefined);
+       end
+       debug.setmetatable(function() end, mt);
 end
 
--- Function to initiate prosody shutdown
-function prosody.shutdown(reason)
-       log("info", "Shutting down: %s", reason or "unknown reason");
-       prosody.events.fire_event("server-stopping", {reason = reason});
-       server.setquitting(true);
-end
+function init_global_state()
+       -- COMPAT: These globals are deprecated
+       bare_sessions = {};
+       full_sessions = {};
+       hosts = {};
 
--- Signal to modules that we are ready to start
-eventmanager.fire_event("server-starting");
-prosody.events.fire_event("server-starting");
+       prosody.bare_sessions = bare_sessions;
+       prosody.full_sessions = full_sessions;
+       prosody.hosts = hosts;
+       
+       local data_path = config.get("*", "data_path") or CFG_DATADIR or "data";
+       local custom_plugin_paths = config.get("*", "plugin_paths");
+       if custom_plugin_paths then
+               local path_sep = package.config:sub(3,3);
+               -- path1;path2;path3;defaultpath...
+               CFG_PLUGINDIR = table.concat(custom_plugin_paths, path_sep)..path_sep..(CFG_PLUGINDIR or "plugins");
+       end
+       prosody.paths = { source = CFG_SOURCEDIR, config = CFG_CONFIGDIR or ".", 
+                         plugins = CFG_PLUGINDIR or "plugins", data = data_path };
 
--- Load SSL settings from config, and create a ctx table
-local global_ssl_ctx = ssl and config.get("*", "core", "ssl");
-if global_ssl_ctx then
-       local default_ssl_ctx = { mode = "server", protocol = "sslv23", capath = "/etc/ssl/certs", verify = "none"; };
-       setmetatable(global_ssl_ctx, { __index = default_ssl_ctx });
-end
+       prosody.arg = _G.arg;
 
--- start listening on sockets
-function net_activate_ports(option, listener, default, conntype)
-       if not cl.get(listener) then return; end
-       local ports = config.get("*", "core", option.."_ports") or default;
-       if type(ports) == "number" then ports = {ports} end;
+       prosody.platform = "unknown";
+       if os.getenv("WINDIR") then
+               prosody.platform = "windows";
+       elseif package.config:sub(1,1) == "/" then
+               prosody.platform = "posix";
+       end
        
-       if type(ports) ~= "table" then
-               log("error", "core."..option.." is not a table");
-       else
-               for _, port in ipairs(ports) do
-                       if type(port) ~= "number" then
-                               log("error", "Non-numeric "..option.."_ports: "..tostring(port));
-                       else
-                               cl.start(listener, { 
-                                       ssl = conntype ~= "tcp" and global_ssl_ctx,
-                                       port = port,
-                                       interface = config.get("*", "core", option.."_interface") 
-                                               or cl.get(listener).default_interface 
-                                               or config.get("*", "core", "interface"),
-                                       type = conntype
-                               });
+       prosody.installed = nil;
+       if CFG_SOURCEDIR and (prosody.platform == "windows" or CFG_SOURCEDIR:match("^/")) then
+               prosody.installed = true;
+       end
+       
+       if prosody.installed then
+               -- Change working directory to data path.
+               require "lfs".chdir(data_path);
+       end
+
+       -- Function to reload the config file
+       function prosody.reload_config()
+               log("info", "Reloading configuration file");
+               prosody.events.fire_event("reloading-config");
+               local ok, level, err = config.load(prosody.config_file);
+               if not ok then
+                       if level == "parser" then
+                               log("error", "There was an error parsing the configuration file: %s", tostring(err));
+                       elseif level == "file" then
+                               log("error", "Couldn't read the config file when trying to reload: %s", tostring(err));
                        end
                end
+               return ok, (err and tostring(level)..": "..tostring(err)) or nil;
        end
-end
 
-net_activate_ports("c2s", "xmppclient", {5222}, (global_ssl_ctx and "tls") or "tcp");
-net_activate_ports("s2s", "xmppserver", {5269}, "tcp");
-net_activate_ports("component", "xmppcomponent", {}, "tcp");
-net_activate_ports("legacy_ssl", "xmppclient", {}, "ssl");
-net_activate_ports("console", "console", {5582}, "tcp");
+       -- Function to reopen logfiles
+       function prosody.reopen_logfiles()
+               log("info", "Re-opening log files");
+               prosody.events.fire_event("reopen-log-files");
+       end
 
--- Catch global accesses --
-local locked_globals_mt = { __index = function (t, k) error("Attempt to read a non-existent global '"..k.."'", 2); end, __newindex = function (t, k, v) error("Attempt to set a global: "..tostring(k).." = "..tostring(v), 2); end }
+       -- Function to initiate prosody shutdown
+       function prosody.shutdown(reason)
+               log("info", "Shutting down: %s", reason or "unknown reason");
+               prosody.shutdown_reason = reason;
+               prosody.events.fire_event("server-stopping", {reason = reason});
+               server.setquitting(true);
+       end
 
-function prosody.unlock_globals()
-       setmetatable(_G, nil);
-end
+       -- Load SSL settings from config, and create a ctx table
+       local certmanager = require "core.certmanager";
+       local global_ssl_ctx = certmanager.create_context("*", "server");
+       prosody.global_ssl_ctx = global_ssl_ctx;
 
-function prosody.lock_globals()
-       setmetatable(_G, locked_globals_mt);
 end
 
--- And lock now...
-prosody.lock_globals();
+function read_version()
+       -- Try to determine version
+       local version_file = io.open((CFG_SOURCEDIR or ".").."/prosody.version");
+       if version_file then
+               prosody.version = version_file:read("*a"):gsub("%s*$", "");
+               version_file:close();
+               if #prosody.version == 12 and prosody.version:match("^[a-f0-9]+$") then
+                       prosody.version = "hg:"..prosody.version;
+               end
+       else
+               prosody.version = "unknown";
+       end
+end
 
-prosody.start_time = os.time();
+function load_secondary_libraries()
+       --- Load and initialise core modules
+       require "util.import"
+       require "util.xmppstream"
+       require "core.stanza_router"
+       require "core.hostmanager"
+       require "core.portmanager"
+       require "core.modulemanager"
+       require "core.usermanager"
+       require "core.rostermanager"
+       require "core.sessionmanager"
+       package.loaded['core.componentmanager'] = setmetatable({},{__index=function()
+               log("warn", "componentmanager is deprecated: %s", debug.traceback():match("\n[^\n]*\n[ \t]*([^\n]*)"));
+               return function() end
+       end});
+
+       require "net.http"
+       
+       require "util.array"
+       require "util.datetime"
+       require "util.iterators"
+       require "util.timer"
+       require "util.helpers"
+       
+       pcall(require, "util.signal") -- Not on Windows
+       
+       -- Commented to protect us from 
+       -- the second kind of people
+       --[[ 
+       pcall(require, "remdebug.engine");
+       if remdebug then remdebug.engine.start() end
+       ]]
+
+       require "util.stanza"
+       require "util.jid"
+end
 
-eventmanager.fire_event("server-started");
-prosody.events.fire_event("server-started");
+function init_data_store()
+       require "core.storagemanager";
+end
 
--- Error handler for errors that make it this far
-local function catch_uncaught_error(err)
-       if err:match("%d*: interrupted!$") then
-               return "quitting";
+function prepare_to_start()
+       log("info", "Prosody is using the %s backend for connection handling", server.get_backend());
+       -- Signal to modules that we are ready to start
+       prosody.events.fire_event("server-starting");
+       prosody.start_time = os.time();
+end    
+
+function init_global_protection()
+       -- Catch global accesses
+       local locked_globals_mt = {
+               __index = function (t, k) log("warn", "%s", debug.traceback("Attempt to read a non-existent global '"..tostring(k).."'", 2)); end;
+               __newindex = function (t, k, v) error("Attempt to set a global: "..tostring(k).." = "..tostring(v), 2); end;
+       };
+               
+       function prosody.unlock_globals()
+               setmetatable(_G, nil);
        end
        
-       log("error", "Top-level error, please report:\n%s", tostring(err));
-       local traceback = debug.traceback("", 2);
-       if traceback then
-               log("error", "%s", traceback);
+       function prosody.lock_globals()
+               setmetatable(_G, locked_globals_mt);
        end
-       
-       prosody.events.fire_event("very-bad-error", {error = err, traceback = traceback});
-end
 
-while select(2, xpcall(server.loop, catch_uncaught_error)) ~= "quitting" do
-       socket.sleep(0.2);
+       -- And lock now...
+       prosody.lock_globals();
 end
 
-log("info", "Shutdown status: Cleaning up");
-prosody.events.fire_event("server-cleanup");
-
--- Ok, we're quitting I know, but we
--- need to do some tidying before we go :)
-server.setquitting(false);
-
-log("info", "Shutdown status: Closing all active sessions");
-for hostname, host in pairs(hosts) do
-       log("debug", "Shutdown status: Closing client connections for %s", hostname)
-       if host.sessions then
-               for username, user in pairs(host.sessions) do
-                       for resource, session in pairs(user.sessions) do
-                               log("debug", "Closing connection for %s@%s/%s", username, hostname, resource);
-                               session:close("system-shutdown");
-                       end
+function loop()
+       -- Error handler for errors that make it this far
+       local function catch_uncaught_error(err)
+               if type(err) == "string" and err:match("interrupted!$") then
+                       return "quitting";
                end
+               
+               log("error", "Top-level error, please report:\n%s", tostring(err));
+               local traceback = debug.traceback("", 2);
+               if traceback then
+                       log("error", "%s", traceback);
+               end
+               
+               prosody.events.fire_event("very-bad-error", {error = err, traceback = traceback});
        end
        
-       log("debug", "Shutdown status: Closing outgoing s2s connections from %s", hostname);
-       if host.s2sout then
-               for remotehost, session in pairs(host.s2sout) do
-                       if session.close then
-                               session:close("system-shutdown");
-                       else
-                               log("warn", "Unable to close outgoing s2s session to %s, no session:close()?!", remotehost);
-                       end
-               end
+       while select(2, xpcall(server.loop, catch_uncaught_error)) ~= "quitting" do
+               socket.sleep(0.2);
        end
 end
 
-log("info", "Shutdown status: Closing all server connections");
-server.closeall();
+function cleanup()
+       log("info", "Shutdown status: Cleaning up");
+       prosody.events.fire_event("server-cleanup");
+end
+
+-- Are you ready? :)
+-- These actions are in a strict order, as many depend on
+-- previous steps to have already been performed
+read_config();
+init_logging();
+sanity_check();
+sandbox_require();
+set_function_metatable();
+load_libraries();
+init_global_state();
+read_version();
+log("info", "Hello and welcome to Prosody version %s", prosody.version);
+log_dependency_warnings();
+load_secondary_libraries();
+init_data_store();
+init_global_protection();
+prepare_to_start();
 
-server.setquitting(true);
+prosody.events.fire_event("server-started");
 
-eventmanager.fire_event("server-stopped");
+loop();
+
+log("info", "Shutting down...");
+cleanup();
 prosody.events.fire_event("server-stopped");
-log("info", "Shutdown status: Complete!");
+log("info", "Shutdown complete");
+