def run_server(error_cb, opts, mode, xpra_file, extra_args, desktop_display=None): try: cwd = os.getcwd() except: cwd = os.path.expanduser("~") warn("current working directory does not exist, using '%s'\n" % cwd) validate_encryption(opts) if opts.encoding == "help" or "help" in opts.encodings: return show_encoding_help(opts) from xpra.server.socket_util import parse_bind_ip, parse_bind_vsock, get_network_logger bind_tcp = parse_bind_ip(opts.bind_tcp) bind_udp = parse_bind_ip(opts.bind_udp) bind_ssl = parse_bind_ip(opts.bind_ssl) bind_ws = parse_bind_ip(opts.bind_ws) bind_wss = parse_bind_ip(opts.bind_wss) bind_rfb = parse_bind_ip(opts.bind_rfb, 5900) bind_vsock = parse_bind_vsock(opts.bind_vsock) assert mode in ("start", "start-desktop", "upgrade", "shadow", "proxy") starting = mode == "start" starting_desktop = mode == "start-desktop" upgrading = mode == "upgrade" shadowing = mode == "shadow" proxying = mode == "proxy" clobber = upgrading or opts.use_display start_vfb = not shadowing and not proxying and not clobber if upgrading or shadowing: #there should already be one running opts.pulseaudio = False #get the display name: if shadowing and len(extra_args) == 0: if WIN32 or OSX: #just a virtual name for the only display available: display_name = ":0" else: from xpra.scripts.main import guess_X11_display dotxpra = DotXpra(opts.socket_dir, opts.socket_dirs) display_name = guess_X11_display(dotxpra) elif upgrading and len(extra_args) == 0: display_name = guess_xpra_display(opts.socket_dir, opts.socket_dirs) else: if len(extra_args) > 1: error_cb( "too many extra arguments (%i): only expected a display number" % len(extra_args)) if len(extra_args) == 1: display_name = extra_args[0] if not shadowing and not proxying and not opts.use_display: display_name_check(display_name) else: if proxying: #find a free display number: dotxpra = DotXpra(opts.socket_dir, opts.socket_dirs) all_displays = dotxpra.sockets() #ie: [("LIVE", ":100"), ("LIVE", ":200"), ...] displays = [v[1] for v in all_displays] display_name = None for x in range(1000, 20000): v = ":%s" % x if v not in displays: display_name = v break if not display_name: error_cb( "you must specify a free virtual display name to use with the proxy server" ) elif opts.use_display: #only use automatic guess for xpra displays and not X11 displays: display_name = guess_xpra_display(opts.socket_dir, opts.socket_dirs) else: # We will try to find one automaticaly # Use the temporary magic value 'S' as marker: display_name = 'S' + str(os.getpid()) if not shadowing and not proxying and not upgrading and opts.exit_with_children and not opts.start_child: error_cb( "--exit-with-children specified without any children to spawn; exiting immediately" ) atexit.register(run_cleanups) # Generate the script text now, because os.getcwd() will # change if/when we daemonize: from xpra.server.server_util import xpra_runner_shell_script, write_runner_shell_scripts, write_pidfile, find_log_dir, create_input_devices script = xpra_runner_shell_script(xpra_file, cwd, opts.socket_dir) uid = int(opts.uid) gid = int(opts.gid) username = get_username_for_uid(uid) home = get_home_for_uid(uid) xauth_data = None if start_vfb: xauth_data = get_hex_uuid() ROOT = POSIX and getuid() == 0 protected_fds = [] protected_env = {} stdout = sys.stdout stderr = sys.stderr # Daemonize: if POSIX and opts.daemon: #daemonize will chdir to "/", so try to use an absolute path: if opts.password_file: opts.password_file = os.path.abspath(opts.password_file) from xpra.server.server_util import daemonize daemonize() displayfd = 0 if POSIX and opts.displayfd: try: displayfd = int(opts.displayfd) if displayfd > 0: protected_fds.append(displayfd) except ValueError as e: stderr.write("Error: invalid displayfd '%s':\n" % opts.displayfd) stderr.write(" %s\n" % e) del e # if pam is present, try to create a new session: pam = None PAM_OPEN = POSIX and envbool("XPRA_PAM_OPEN", ROOT and uid != 0) if PAM_OPEN: try: from xpra.server.pam import pam_session #@UnresolvedImport except ImportError as e: stderr.write("Error: failed to import pam module\n") stderr.write(" %s" % e) del e PAM_OPEN = False if PAM_OPEN: fdc = FDChangeCaptureContext() with fdc: pam = pam_session(username) env = { #"XDG_SEAT" : "seat1", #"XDG_VTNR" : "0", "XDG_SESSION_TYPE": "x11", #"XDG_SESSION_CLASS" : "user", "XDG_SESSION_DESKTOP": "xpra", } #maybe we should just bail out instead? if pam.start(): pam.set_env(env) items = {} if display_name.startswith(":"): items["XDISPLAY"] = display_name if xauth_data: items["XAUTHDATA"] = xauth_data pam.set_items(items) if pam.open(): #we can't close it, because we're not going to be root any more, #but since we're the process leader for the session, #terminating will also close the session #add_cleanup(pam.close) protected_env = pam.get_envlist() os.environ.update(protected_env) #closing the pam fd causes the session to be closed, #and we don't want that! protected_fds += fdc.get_new_fds() #get XDG_RUNTIME_DIR from env options, #which may not be have updated os.environ yet when running as root with "--uid=" xrd = os.path.abspath(parse_env(opts.env).get("XDG_RUNTIME_DIR", "")) if ROOT and (uid > 0 or gid > 0): #we're going to chown the directory if we create it, #ensure this cannot be abused, only use "safe" paths: if not any(x for x in ("/run/user/%i" % uid, "/tmp", "/var/tmp") if xrd.startswith(x)): xrd = "" #these paths could cause problems if we were to create and chown them: if xrd.startswith("/tmp/.X11-unix") or xrd.startswith( "/tmp/.XIM-unix"): xrd = "" if not xrd: xrd = os.environ.get("XDG_RUNTIME_DIR") xrd = create_runtime_dir(xrd, uid, gid) if xrd: #this may override the value we get from pam #with the value supplied by the user: protected_env["XDG_RUNTIME_DIR"] = xrd if opts.pidfile: write_pidfile(opts.pidfile, uid, gid) if POSIX and not ROOT: # Write out a shell-script so that we can start our proxy in a clean # environment: write_runner_shell_scripts(script) if start_vfb or opts.daemon: #we will probably need a log dir #either for the vfb, or for our own log file log_dir = opts.log_dir or "" if not log_dir or log_dir.lower() == "auto": log_dir = find_log_dir(username, uid=uid, gid=gid) if not log_dir: raise InitException( "cannot find or create a logging directory") #expose the log-dir as "XPRA_LOG_DIR", #this is used by Xdummy for the Xorg log file if "XPRA_LOG_DIR" not in os.environ: os.environ["XPRA_LOG_DIR"] = log_dir if opts.daemon: from xpra.server.server_util import select_log_file, open_log_file, redirect_std_to_log log_filename0 = select_log_file(log_dir, opts.log_file, display_name) logfd = open_log_file(log_filename0) if ROOT and (uid > 0 or gid > 0): try: os.fchown(logfd, uid, gid) except: pass stdout, stderr = redirect_std_to_log(logfd, *protected_fds) try: stderr.write("Entering daemon mode; " + "any further errors will be reported to:\n" + (" %s\n" % log_filename0)) except: #we tried our best, logging another error won't help pass #warn early about this: if (starting or starting_desktop) and desktop_display: print_DE_warnings(desktop_display, opts.pulseaudio, opts.notifications, opts.dbus_launch) log = get_util_logger() netlog = get_network_logger() mdns_recs = {} sockets = [] #SSL sockets: wrap_socket_fn = None need_ssl = False ssl_opt = opts.ssl.lower() if ssl_opt in TRUE_OPTIONS or bind_ssl or bind_wss: need_ssl = True if opts.bind_tcp or opts.bind_ws: if ssl_opt == "auto" and opts.ssl_cert: need_ssl = True elif ssl_opt == "tcp" and opts.bind_tcp: need_ssl = True elif ssl_opt == "www": need_ssl = True if need_ssl: from xpra.scripts.main import ssl_wrap_socket_fn try: wrap_socket_fn = ssl_wrap_socket_fn(opts, server_side=True) netlog("wrap_socket_fn=%s", wrap_socket_fn) except Exception as e: netlog("SSL error", exc_info=True) cpaths = csv("'%s'" % x for x in (opts.ssl_cert, opts.ssl_key) if x) raise InitException( "cannot create SSL socket, check your certificate paths (%s): %s" % (cpaths, e)) from xpra.server.socket_util import setup_tcp_socket, setup_udp_socket, setup_vsock_socket, setup_local_sockets, has_dual_stack min_port = int(opts.min_port) def hosts(host_str): if host_str == "*": if has_dual_stack(): #IPv6 will also listen for IPv4: return ["::"] #no dual stack, so we have to listen on both IPv4 and IPv6 explicitly: return ["0.0.0.0", "::"] return [host_str] def add_mdns(socktype, host_str, port): recs = mdns_recs.setdefault(socktype.lower(), []) for host in hosts(host_str): rec = (host, port) if rec not in recs: recs.append(rec) def add_tcp_socket(socktype, host_str, iport): if iport < min_port: error_cb("invalid %s port number %i (minimum value is %i)" % (socktype, iport, min_port)) for host in hosts(host_str): socket = setup_tcp_socket(host, iport, socktype) sockets.append(socket) add_mdns(socktype, host, iport) def add_udp_socket(socktype, host_str, iport): if iport < min_port: error_cb("invalid %s port number %i (minimum value is %i)" % (socktype, iport, min_port)) for host in hosts(host_str): socket = setup_udp_socket(host, iport, socktype) sockets.append(socket) add_mdns(socktype, host, iport) # Initialize the TCP sockets before the display, # That way, errors won't make us kill the Xvfb # (which may not be ours to kill at that point) netlog("setting up SSL sockets: %s", csv(bind_ssl)) for host, iport in bind_ssl: add_tcp_socket("ssl", host, iport) netlog("setting up https / wss (secure websockets): %s", csv(bind_wss)) for host, iport in bind_wss: add_tcp_socket("wss", host, iport) tcp_ssl = ssl_opt in TRUE_OPTIONS or (ssl_opt == "auto" and opts.ssl_cert) netlog("setting up TCP sockets: %s", csv(bind_tcp)) for host, iport in bind_tcp: add_tcp_socket("tcp", host, iport) if tcp_ssl: add_mdns("ssl", host, iport) netlog("setting up UDP sockets: %s", csv(bind_udp)) for host, iport in bind_udp: add_udp_socket("udp", host, iport) netlog("setting up http / ws (websockets): %s", csv(bind_ws)) for host, iport in bind_ws: add_tcp_socket("ws", host, iport) if tcp_ssl: add_mdns("wss", host, iport) if bind_rfb and (proxying or starting): log.warn("Warning: bind-rfb sockets cannot be used with '%s' mode" % mode) else: netlog("setting up rfb sockets: %s", csv(bind_rfb)) for host, iport in bind_rfb: add_tcp_socket("rfb", host, iport) netlog("setting up vsock sockets: %s", csv(bind_vsock)) for cid, iport in bind_vsock: socket = setup_vsock_socket(cid, iport) sockets.append(socket) #add_mdns("vsock", str(cid), iport) # systemd socket activation: try: from xpra.platform.xposix.sd_listen import get_sd_listen_sockets except ImportError: pass else: sd_sockets = get_sd_listen_sockets() netlog("systemd sockets: %s", sd_sockets) for stype, socket, addr in sd_sockets: sockets.append((stype, socket, addr)) netlog("%s : %s", (stype, [addr]), socket) if stype == "tcp": host, iport = addr add_mdns("tcp", host, iport) sanitize_env() if POSIX: if xrd: os.environ["XDG_RUNTIME_DIR"] = xrd os.environ["XDG_SESSION_TYPE"] = "x11" if not starting_desktop: os.environ["XDG_CURRENT_DESKTOP"] = opts.wm_name configure_imsettings_env(opts.input_method) if display_name[0] != 'S': os.environ["DISPLAY"] = display_name os.environ["CKCON_X11_DISPLAY"] = display_name else: try: del os.environ["DISPLAY"] except: pass os.environ.update(protected_env) log("env=%s", os.environ) UINPUT_UUID_LEN = 12 UINPUT_UUID_MIN_LEN = 12 UINPUT_UUID_MAX_LEN = 32 # Start the Xvfb server first to get the display_name if needed odisplay_name = display_name xvfb = None xvfb_pid = None uinput_uuid = None if start_vfb: assert not proxying and xauth_data pixel_depth = validate_pixel_depth(opts.pixel_depth) from xpra.x11.vfb_util import start_Xvfb, check_xvfb_process from xpra.server.server_util import has_uinput uinput_uuid = None if has_uinput() and opts.input_devices.lower() in ( "uinput", "auto") and not shadowing: from xpra.os_util import get_rand_chars uinput_uuid = get_rand_chars(UINPUT_UUID_LEN) xvfb, display_name, cleanups = start_Xvfb(opts.xvfb, pixel_depth, display_name, cwd, uid, gid, username, xauth_data, uinput_uuid) for f in cleanups: add_cleanup(f) xvfb_pid = xvfb.pid #always update as we may now have the "real" display name: os.environ["DISPLAY"] = display_name os.environ["CKCON_X11_DISPLAY"] = display_name os.environ.update(protected_env) if display_name != odisplay_name and pam: pam.set_items({"XDISPLAY": display_name}) def check_xvfb(): return check_xvfb_process(xvfb) else: def check_xvfb(): return True if POSIX and not OSX and displayfd > 0: from xpra.platform.displayfd import write_displayfd try: display = display_name[1:] log("writing display='%s' to displayfd=%i", display, displayfd) assert write_displayfd(displayfd, display), "timeout" except Exception as e: log.error("write_displayfd failed", exc_info=True) log.error("Error: failed to write '%s' to fd=%s", display_name, displayfd) log.error(" %s", str(e) or type(e)) del e try: os.close(displayfd) except: pass if not proxying: def close_display(): close_gtk_display() kill_xvfb(xvfb_pid) add_cleanup(close_display) else: close_display = None if opts.daemon: def noerr(fn, *args): try: fn(*args) except: pass log_filename1 = select_log_file(log_dir, opts.log_file, display_name) if log_filename0 != log_filename1: # we now have the correct log filename, so use it: os.rename(log_filename0, log_filename1) if odisplay_name != display_name: #this may be used by scripts, let's try not to change it: noerr(stderr.write, "Actual display used: %s\n" % display_name) noerr(stderr.write, "Actual log file name is now: %s\n" % log_filename1) noerr(stderr.flush) noerr(stdout.close) noerr(stderr.close) #we should not be using stdout or stderr from this point: del stdout del stderr if not check_xvfb(): #xvfb problem: exit now return 1 #create devices for vfb if needed: devices = {} if not start_vfb and not proxying and not shadowing: #try to find the existing uinput uuid: #use a subprocess to avoid polluting our current process #with X11 connections before we get a chance to change uid cmd = ["xprop", "-display", display_name, "-root", "_XPRA_UINPUT_ID"] try: code, out, err = get_status_output(cmd) except Exception as e: log("failed to get existing uinput id: %s", e) del e else: log("Popen(%s)=%s", cmd, (code, out, err)) if code == 0 and out.find("=") > 0: uinput_uuid = out.split("=", 1)[1] log("raw uinput uuid=%s", uinput_uuid) uinput_uuid = strtobytes(uinput_uuid.strip('\n\r"\\ ')) if uinput_uuid: if len(uinput_uuid) > UINPUT_UUID_MAX_LEN or len( uinput_uuid) < UINPUT_UUID_MIN_LEN: log.warn("Warning: ignoring invalid uinput id:") log.warn(" '%s'", uinput_uuid) uinput_uuid = None else: log.info("retrieved existing uinput id: %s", bytestostr(uinput_uuid)) if uinput_uuid: devices = create_input_devices(uinput_uuid, uid) if ROOT and (uid != 0 or gid != 0): log("root: switching to uid=%i, gid=%i", uid, gid) setuidgid(uid, gid) os.environ.update({ "HOME": home, "USER": username, "LOGNAME": username, }) shell = get_shell_for_uid(uid) if shell: os.environ["SHELL"] = shell #now we've changed uid, it is safe to honour all the env updates: configure_env(opts.env) os.environ.update(protected_env) if opts.chdir: os.chdir(opts.chdir) display = None if not proxying: no_gtk() if POSIX and not OSX and (starting or starting_desktop or shadowing): #check that we can access the X11 display: from xpra.x11.vfb_util import verify_display_ready if not verify_display_ready(xvfb, display_name, shadowing): return 1 if not PYTHON3: from xpra.x11.gtk2.gdk_display_util import verify_gdk_display #@UnusedImport else: from xpra.x11.gtk3.gdk_display_util import verify_gdk_display #@Reimport display = verify_gdk_display(display_name) if not display: return 1 #on win32, this ensures that we get the correct screen size to shadow: from xpra.platform.gui import init as gui_init gui_init() #setup unix domain socket: if not opts.socket_dir and not opts.socket_dirs: #we always need at least one valid socket dir from xpra.platform.paths import get_socket_dirs opts.socket_dirs = get_socket_dirs() local_sockets = setup_local_sockets(opts.bind, opts.socket_dir, opts.socket_dirs, display_name, clobber, opts.mmap_group, opts.socket_permissions, username, uid, gid) netlog("setting up local sockets: %s", local_sockets) for rec, cleanup_socket in local_sockets: socktype, socket, sockpath = rec #ie: ("unix-domain", sock, sockpath), cleanup_socket sockets.append(rec) netlog("%s %s : %s", socktype, sockpath, socket) add_cleanup(cleanup_socket) if opts.mdns: ssh_port = get_ssh_port() netlog("ssh %s:%s : %s", "", ssh_port, socket) if ssh_port: add_mdns("ssh", "", ssh_port) kill_dbus = None if shadowing: from xpra.platform.shadow_server import ShadowServer app = ShadowServer() elif proxying: from xpra.server.proxy.proxy_server import ProxyServer app = ProxyServer() else: if not check_xvfb(): return 1 assert starting or starting_desktop or upgrading from xpra.x11.gtk2.gdk_display_source import init_gdk_display_source init_gdk_display_source() #(now we can access the X11 server) #make sure the pid we save is the real one: if not check_xvfb(): return 1 if xvfb_pid is not None: #save the new pid (we should have one): save_xvfb_pid(xvfb_pid) if POSIX: save_uinput_id(uinput_uuid or "") dbus_pid = -1 dbus_env = {} if clobber: #get the saved pids and env dbus_pid = get_dbus_pid() dbus_env = get_dbus_env() log("retrieved existing dbus attributes") else: assert starting or starting_desktop if xvfb_pid is not None: #save the new pid (we should have one): save_xvfb_pid(xvfb_pid) bus_address = protected_env.get("DBUS_SESSION_BUS_ADDRESS") log("dbus_launch=%s, current DBUS_SESSION_BUS_ADDRESS=%s", opts.dbus_launch, bus_address) if opts.dbus_launch and not bus_address: #start a dbus server: def kill_dbus(): log("kill_dbus: dbus_pid=%s" % dbus_pid) if dbus_pid <= 0: return try: os.kill(dbus_pid, signal.SIGINT) except Exception as e: log.warn( "Warning: error trying to stop dbus with pid %i:", dbus_pid) log.warn(" %s", e) add_cleanup(kill_dbus) #this also updates os.environ with the dbus attributes: dbus_pid, dbus_env = start_dbus(opts.dbus_launch) if dbus_pid > 0: save_dbus_pid(dbus_pid) if dbus_env: save_dbus_env(dbus_env) log("dbus attributes: pid=%s, env=%s", dbus_pid, dbus_env) if dbus_env: os.environ.update(dbus_env) os.environ.update(protected_env) log("env=%s", os.environ) try: # This import is delayed because the module depends on gtk: from xpra.x11.bindings.window_bindings import X11WindowBindings X11Window = X11WindowBindings() if (starting or starting_desktop) and not clobber and opts.resize_display: from xpra.x11.vfb_util import set_initial_resolution set_initial_resolution(starting_desktop) except ImportError as e: log.error( "Failed to load Xpra server components, check your installation: %s" % e) return 1 if starting or upgrading: if not X11Window.displayHasXComposite(): log.error( "Xpra 'start' subcommand runs as a compositing manager") log.error( " it cannot use a display which lacks the XComposite extension!" ) return 1 if starting: #check for an existing window manager: from xpra.x11.gtk2.wm import wm_check if not wm_check(display, opts.wm_name, upgrading): return 1 log("XShape=%s", X11Window.displayHasXShape()) from xpra.x11.server import XpraServer app = XpraServer(clobber) else: assert starting_desktop from xpra.x11.desktop_server import XpraDesktopServer app = XpraDesktopServer() app.init_virtual_devices(devices) #publish mdns records: if opts.mdns: from xpra.platform.info import get_username from xpra.server.socket_util import mdns_publish mdns_info = { "display": display_name, "username": get_username(), "uuid": strtobytes(app.uuid), "platform": sys.platform, "type": app.session_type, } if opts.session_name: mdns_info["session"] = opts.session_name for mode, listen_on in mdns_recs.items(): mdns_publish(display_name, mode, listen_on, mdns_info) try: app._ssl_wrap_socket = wrap_socket_fn app.original_desktop_display = desktop_display app.exec_cwd = opts.chdir or cwd app.init(opts) app.init_components(opts) except InitException as e: log.error("xpra server initialization error:") log.error(" %s", e) return 1 except Exception as e: log.error("Error: cannot start the %s server", app.session_type, exc_info=True) log.error(str(e)) log.info("") return 1 #honour start child, html webserver, and setup child reaper if not proxying and not upgrading: if opts.exit_with_children: assert opts.start_child, "exit-with-children was specified but start-child is missing!" app.start_commands = opts.start app.start_child_commands = opts.start_child app.start_after_connect = opts.start_after_connect app.start_child_after_connect = opts.start_child_after_connect app.start_on_connect = opts.start_on_connect app.start_child_on_connect = opts.start_child_on_connect app.exec_start_commands() del opts log("%s(%s)", app.init_sockets, sockets) app.init_sockets(sockets) log("%s(%s)", app.init_when_ready, _when_ready) app.init_when_ready(_when_ready) try: #from here on, we own the vfb, even if we inherited one: if (starting or starting_desktop or upgrading) and clobber: #and it will be killed if exit cleanly: xvfb_pid = get_xvfb_pid() log("running %s", app.run) r = app.run() log("%s()=%s", app.run, r) except KeyboardInterrupt: log.info("stopping on KeyboardInterrupt") r = 0 except Exception: log.error("server error", exc_info=True) r = -128 if r > 0: # Upgrading/exiting, so leave X and dbus servers running if close_display: _cleanups.remove(close_display) if kill_dbus: _cleanups.remove(kill_dbus) from xpra.server.server_core import ServerCore if r == ServerCore.EXITING_CODE: log.info("exiting: not cleaning up Xvfb") else: log.info("upgrading: not cleaning up Xvfb") log("cleanups=%s", _cleanups) r = 0 return r
def make_proxy_server(): from xpra.server.proxy.proxy_server import ProxyServer return ProxyServer()
def run_server(error_cb, opts, mode, xpra_file, extra_args): try: cwd = os.getcwd() except: cwd = os.path.expanduser("~") sys.stderr.write( "current working directory does not exist, using '%s'\n" % cwd) if opts.encoding and opts.encoding == "help": #avoid errors and warnings: opts.encoding = "" opts.clipboard = False opts.notifications = False print("xpra server supports the following encodings:") print("(please wait, encoder initialization may take a few seconds)") #disable info logging which would be confusing here from xpra.log import get_all_loggers, set_default_level import logging set_default_level(logging.WARN) logging.root.setLevel(logging.WARN) for x in get_all_loggers(): x.logger.setLevel(logging.WARN) from xpra.server.server_base import ServerBase sb = ServerBase() sb.init(opts) #ensures that the threaded video helper init has completed #(by running it again, which will block on the init lock) from xpra.codecs.video_helper import getVideoHelper getVideoHelper().init() sb.init_encodings() from xpra.codecs.loader import encoding_help for e in sb.encodings: print(" * %s" % encoding_help(e)) return 0 assert mode in ("start", "upgrade", "shadow", "proxy") starting = mode == "start" upgrading = mode == "upgrade" shadowing = mode == "shadow" proxying = mode == "proxy" clobber = upgrading or opts.use_display start_vfb = not shadowing and not proxying and not clobber if upgrading or shadowing: #there should already be one running opts.pulseaudio = False #get the display name: if shadowing and len(extra_args) == 0: if sys.platform.startswith("win") or sys.platform.startswith("darwin"): #just a virtual name for the only display available: display_name = ":0" else: from xpra.scripts.main import guess_X11_display display_name = guess_X11_display(opts.socket_dir, opts.socket_dirs) elif upgrading and len(extra_args) == 0: display_name = guess_xpra_display(opts.socket_dir, opts.socket_dirs) else: if len(extra_args) > 1: error_cb( "too many extra arguments: only expected a display number") if len(extra_args) == 1: display_name = extra_args[0] if not shadowing and not proxying: display_name_check(display_name) else: if proxying: error_cb( "you must specify a free virtual display name to use with the proxy server" ) if not opts.displayfd: error_cb( "displayfd support is not enabled on this system, you must specify the display to use" ) if opts.use_display: #only use automatic guess for xpra displays and not X11 displays: display_name = guess_xpra_display(opts.socket_dir, opts.socket_dirs) else: # We will try to find one automaticaly # Use the temporary magic value 'S' as marker: display_name = 'S' + str(os.getpid()) if not shadowing and not proxying and not upgrading and opts.exit_with_children and not opts.start_child: error_cb( "--exit-with-children specified without any children to spawn; exiting immediately" ) atexit.register(run_cleanups) #the server class will usually override those: #SIGINT breaks GTK3.. (but there are no py3k servers!) signal.signal(signal.SIGINT, deadly_signal) signal.signal(signal.SIGTERM, deadly_signal) # Generate the script text now, because os.getcwd() will # change if/when we daemonize: script = xpra_runner_shell_script(xpra_file, os.getcwd(), opts.socket_dir) if start_vfb or opts.daemon: #we will probably need a log dir #either for the vfb, or for our own log file log_dir = os.path.expanduser(opts.log_dir) if not os.path.exists(log_dir): try: os.mkdir(log_dir, 0o700) except OSError as e: raise InitException( "failed to create the Xorg log directory '%s': %s" % (xorg_log_dir, e)) stdout = sys.stdout stderr = sys.stderr # Daemonize: if opts.daemon: #daemonize will chdir to "/", so try to use an absolute path: if opts.password_file: opts.password_file = os.path.abspath(opts.password_file) # At this point we may not know the display name, # so log_filename0 may point to a temporary file which we will rename later log_filename0 = select_log_file(log_dir, opts.log_file, display_name) logfd = open_log_file(log_filename0) assert logfd > 2 stdout, stderr = daemonize(logfd) try: stderr.write("Entering daemon mode; " + "any further errors will be reported to:\n" + (" %s\n" % log_filename0)) except: #this can happen if stderr is closed by the caller already pass if os.name == "posix": # Write out a shell-script so that we can start our proxy in a clean # environment: write_runner_shell_script(script) from xpra.log import Logger log = Logger("server") #warn early about this: if starting: de = os.environ.get("XDG_SESSION_DESKTOP") or os.environ.get( "SESSION_DESKTOP") if de and (opts.pulseaudio or opts.notifications): log.warn( "Warning: xpra start from an existing '%s' desktop session", de) log.warn(" pulseaudio and notifications forwarding may not work") log.warn( " try using a clean environment, a dedicated user, or turn off those options" ) mdns_recs = [] sockets = [] # Initialize the TCP sockets before the display, # That way, errors won't make us kill the Xvfb # (which may not be ours to kill at that point) bind_tcp = parse_bind_tcp(opts.bind_tcp) for host, iport in bind_tcp: socket = setup_tcp_socket(host, iport) sockets.append(socket) if opts.mdns: rec = "tcp", [(host, iport)] mdns_recs.append(rec) # Do this after writing out the shell script: if display_name[0] != 'S': os.environ["DISPLAY"] = display_name sanitize_env() configure_imsettings_env(opts.input_method) # Start the Xvfb server first to get the display_name if needed xvfb = None xvfb_pid = None if start_vfb: try: xvfb, display_name = start_Xvfb(opts.xvfb, display_name) except OSError as e: log.error("Error starting Xvfb: %s\n", e) return 1 xvfb_pid = xvfb.pid #always update as we may now have the "real" display name: os.environ["DISPLAY"] = display_name if opts.daemon: log_filename1 = select_log_file(log_dir, opts.log_file, display_name) if log_filename0 != log_filename1: # we now have the correct log filename, so use it: os.rename(log_filename0, log_filename1) stderr.write("Actual log file name is now: %s\n" % log_filename1) stdout.close() stderr.close() if not check_xvfb_process(xvfb): #xvfb problem: exit now return 1 #setup unix domain socket: socket, cleanup_socket = setup_local_socket(opts.socket_dir, opts.socket_dirs, display_name, clobber, opts.mmap_group, opts.socket_permissions) if socket: #win32 returns None! sockets.append(socket) if opts.mdns: ssh_port = get_ssh_port() if ssh_port: mdns_recs.append(("ssh", [("", ssh_port)])) #publish mdns records: if opts.mdns: from xpra.platform.info import get_username mdns_info = {"display": display_name, "username": get_username()} if opts.session_name: mdns_info["session"] = opts.session_name for mode, listen_on in mdns_recs: mdns_publish(display_name, mode, listen_on, mdns_info) if not check_xvfb_process(xvfb): #xvfb problem: exit now return 1 display = None if not sys.platform.startswith("win") and not sys.platform.startswith( "darwin") and not proxying: display = verify_display_ready(xvfb, display_name, shadowing) if not display: return 1 elif not proxying: no_gtk() import gtk #@Reimport assert gtk if shadowing: from xpra.platform.shadow_server import ShadowServer app = ShadowServer() info = "shadow" elif proxying: from xpra.server.proxy.proxy_server import ProxyServer app = ProxyServer() info = "proxy" else: assert starting or upgrading from xpra.x11.gtk2 import gdk_display_source assert gdk_display_source #(now we can access the X11 server) if clobber: #get the saved pid (there should be one): xvfb_pid = get_xvfb_pid() elif xvfb_pid is not None: #save the new pid (we should have one): save_xvfb_pid(xvfb_pid) #check for an existing window manager: from xpra.x11.gtk2.wm import wm_check if not wm_check(display, opts.wm_name, upgrading): return 1 try: # This import is delayed because the module depends on gtk: from xpra.x11.server import XpraServer from xpra.x11.bindings.window_bindings import X11WindowBindings #@UnresolvedImport X11Window = X11WindowBindings() except ImportError as e: log.error( "Failed to load Xpra server components, check your installation: %s" % e) return 1 if not X11Window.displayHasXComposite(): log.error( "Xpra is a compositing manager, it cannot use a display which lacks the XComposite extension!" ) return 1 log("XShape=%s", X11Window.displayHasXShape()) app = XpraServer(clobber) info = "xpra" #we got this far so the sockets have initialized and #the server should be able to manage the display #from now on, if we exit without upgrading we will also kill the Xvfb def kill_xvfb(): # Close our display(s) first, so the server dying won't kill us. log.info("killing xvfb with pid %s" % xvfb_pid) import gtk #@Reimport for display in gtk.gdk.display_manager_get().list_displays(): display.close() os.kill(xvfb_pid, signal.SIGTERM) if xvfb_pid is not None and not opts.use_display and not shadowing: _cleanups.append(kill_xvfb) try: app.exec_cwd = cwd app.init(opts) except InitException as e: log.error("xpra server initialization error:") log.error(" %s", e) return 1 except Exception as e: log.error("Error: cannot start the %s server", info, exc_info=True) log.error(str(e)) log.info("") return 1 #honour start child, html webserver, and setup child reaper if os.name == "posix" and not proxying and not upgrading and not shadowing: # start websockify? try: start_websockify(app.child_reaper, opts, bind_tcp) #websockify overrides the tcp proxy, so we must re-set it: app._tcp_proxy = opts.tcp_proxy except Exception as e: error_cb("failed to setup websockify html server: %s" % e) if opts.exit_with_children: assert opts.start_child, "exit-with-children was specified but start-child is missing!" if opts.start: for x in opts.start: if x: app.start_child(x, x, True) if opts.start_child: for x in opts.start_child: if x: app.start_child(x, x, False) log("%s(%s)", app.init_sockets, sockets) app.init_sockets(sockets) log("%s(%s)", app.init_when_ready, _when_ready) app.init_when_ready(_when_ready) try: log("running %s", app.run) e = app.run() log("%s()=%s", app.run, e) except KeyboardInterrupt: log.info("stopping on KeyboardInterrupt") e = 0 except Exception as e: log.error("server error", exc_info=True) e = -128 if e > 0: # Upgrading/exiting, so leave X server running if kill_xvfb in _cleanups: _cleanups.remove(kill_xvfb) from xpra.server.server_core import ServerCore if e == ServerCore.EXITING_CODE: log.info("exiting: not cleaning up Xvfb") elif cleanup_socket in _cleanups: log.info("upgrading: not cleaning up Xvfb or socket") # don't delete the new socket (not ours) _cleanups.remove(cleanup_socket) log("cleanups=%s", _cleanups) e = 0 return e
def run_server(error_cb, opts, mode, xpra_file, extra_args, desktop_display=None): try: cwd = os.getcwd() except: cwd = os.path.expanduser("~") warn("current working directory does not exist, using '%s'\n" % cwd) validate_encryption(opts) if opts.encoding == "help" or "help" in opts.encodings: return show_encoding_help(opts) from xpra.server.socket_util import parse_bind_tcp, parse_bind_vsock bind_tcp = parse_bind_tcp(opts.bind_tcp) bind_ssl = parse_bind_tcp(opts.bind_ssl) bind_vsock = parse_bind_vsock(opts.bind_vsock) assert mode in ("start", "start-desktop", "upgrade", "shadow", "proxy") starting = mode == "start" starting_desktop = mode == "start-desktop" upgrading = mode == "upgrade" shadowing = mode == "shadow" proxying = mode == "proxy" clobber = upgrading or opts.use_display start_vfb = not shadowing and not proxying and not clobber if upgrading or shadowing: #there should already be one running opts.pulseaudio = False #get the display name: if shadowing and len(extra_args) == 0: if WIN32 or OSX: #just a virtual name for the only display available: display_name = ":0" else: from xpra.scripts.main import guess_X11_display dotxpra = DotXpra(opts.socket_dir, opts.socket_dirs) display_name = guess_X11_display(dotxpra) elif upgrading and len(extra_args) == 0: display_name = guess_xpra_display(opts.socket_dir, opts.socket_dirs) else: if len(extra_args) > 1: error_cb( "too many extra arguments (%i): only expected a display number" % len(extra_args)) if len(extra_args) == 1: display_name = extra_args[0] if not shadowing and not proxying and not opts.use_display: display_name_check(display_name) else: if proxying: #find a free display number: dotxpra = DotXpra(opts.socket_dir, opts.socket_dirs) all_displays = dotxpra.sockets() #ie: [("LIVE", ":100"), ("LIVE", ":200"), ...] displays = [v[1] for v in all_displays] display_name = None for x in range(1000, 20000): v = ":%s" % x if v not in displays: display_name = v break if not display_name: error_cb( "you must specify a free virtual display name to use with the proxy server" ) elif opts.use_display: #only use automatic guess for xpra displays and not X11 displays: display_name = guess_xpra_display(opts.socket_dir, opts.socket_dirs) else: # We will try to find one automaticaly # Use the temporary magic value 'S' as marker: display_name = 'S' + str(os.getpid()) if not shadowing and not proxying and not upgrading and opts.exit_with_children and not opts.start_child: error_cb( "--exit-with-children specified without any children to spawn; exiting immediately" ) atexit.register(run_cleanups) # Generate the script text now, because os.getcwd() will # change if/when we daemonize: from xpra.server.server_util import xpra_runner_shell_script, write_runner_shell_scripts, write_pidfile, find_log_dir script = xpra_runner_shell_script(xpra_file, cwd, opts.socket_dir) uid = int(opts.uid) gid = int(opts.gid) username = get_username_for_uid(uid) home = get_home_for_uid(uid) xauth_data = None if start_vfb: xauth_data = get_hex_uuid() ROOT = POSIX and getuid() == 0 stdout = sys.stdout stderr = sys.stderr # Daemonize: if POSIX and opts.daemon: #daemonize will chdir to "/", so try to use an absolute path: if opts.password_file: opts.password_file = os.path.abspath(opts.password_file) from xpra.server.server_util import daemonize daemonize() # if pam is present, try to create a new session: pam = None protected_fds = [] protected_env = {} PAM_OPEN = POSIX and envbool("XPRA_PAM_OPEN", ROOT and uid != 0) if PAM_OPEN: try: from xpra.server.pam import pam_session #@UnresolvedImport except ImportError as e: stderr.write("Error: failed to import pam module\n") stderr.write(" %s" % e) PAM_OPEN = False if PAM_OPEN: fdc = FDChangeCaptureContext() with fdc: pam = pam_session(username) env = { #"XDG_SEAT" : "seat1", #"XDG_VTNR" : "0", "XDG_SESSION_TYPE": "x11", #"XDG_SESSION_CLASS" : "user", "XDG_SESSION_DESKTOP": "xpra", } #maybe we should just bail out instead? if pam.start(): pam.set_env(env) items = {} if display_name.startswith(":"): items["XDISPLAY"] = display_name if xauth_data: items["XAUTHDATA"] = xauth_data pam.set_items(items) if pam.open(): #we can't close it, because we're not going to be root any more, #but since we're the process leader for the session, #terminating will also close the session #add_cleanup(pam.close) protected_env = pam.get_envlist() os.environ.update(protected_env) #closing the pam fd causes the session to be closed, #and we don't want that! protected_fds = fdc.get_new_fds() xrd = create_runtime_dir(uid, gid) if opts.pidfile: write_pidfile(opts.pidfile, uid, gid) if POSIX and not ROOT: # Write out a shell-script so that we can start our proxy in a clean # environment: write_runner_shell_scripts(script) if start_vfb or opts.daemon: #we will probably need a log dir #either for the vfb, or for our own log file log_dir = opts.log_dir or "" if not log_dir or log_dir.lower() == "auto": log_dir = find_log_dir(username, uid=uid, gid=gid) if not log_dir: raise InitException( "cannot find or create a logging directory") #expose the log-dir as "XPRA_LOG_DIR", #this is used by Xdummy for the Xorg log file if "XPRA_LOG_DIR" not in os.environ: os.environ["XPRA_LOG_DIR"] = log_dir if opts.daemon: from xpra.server.server_util import select_log_file, open_log_file, redirect_std_to_log log_filename0 = select_log_file(log_dir, opts.log_file, display_name) logfd = open_log_file(log_filename0) if ROOT and (uid > 0 or gid > 0): try: os.fchown(logfd, uid, gid) except: pass stdout, stderr = redirect_std_to_log(logfd, *protected_fds) stderr.write("Entering daemon mode; " + "any further errors will be reported to:\n" + (" %s\n" % log_filename0)) #warn early about this: if (starting or starting_desktop) and desktop_display: print_DE_warnings(desktop_display, opts.pulseaudio, opts.notifications, opts.dbus_launch) from xpra.log import Logger log = Logger("server") netlog = Logger("network") mdns_recs = [] sockets = [] #SSL sockets: wrap_socket_fn = None need_ssl = False ssl_opt = opts.ssl.lower() if ssl_opt in TRUE_OPTIONS or bind_ssl: need_ssl = True if opts.bind_tcp: if ssl_opt == "auto" and opts.ssl_cert: need_ssl = True elif ssl_opt == "tcp": need_ssl = True elif ssl_opt == "www": need_ssl = True if need_ssl: from xpra.scripts.main import ssl_wrap_socket_fn try: wrap_socket_fn = ssl_wrap_socket_fn(opts, server_side=True) netlog("wrap_socket_fn=%s", wrap_socket_fn) except Exception as e: netlog("SSL error", exc_info=True) cpaths = csv("'%s'" % x for x in (opts.ssl_cert, opts.ssl_key) if x) raise InitException( "cannot create SSL socket, check your certificate paths (%s): %s" % (cpaths, e)) from xpra.server.socket_util import setup_tcp_socket, setup_vsock_socket, setup_local_sockets min_port = int(opts.min_port) netlog("setting up SSL sockets: %s", bind_ssl) for host, iport in bind_ssl: if iport < min_port: error_cb("invalid %s port number %i (minimum value is %i)" % (socktype, iport, min_port)) _, tcp_socket, host_port = setup_tcp_socket(host, iport, "SSL") socket = ("SSL", wrap_socket_fn(tcp_socket), host_port) sockets.append(socket) rec = "ssl", [(host, iport)] netlog("%s : %s", rec, socket) mdns_recs.append(rec) # Initialize the TCP sockets before the display, # That way, errors won't make us kill the Xvfb # (which may not be ours to kill at that point) tcp_ssl = ssl_opt in TRUE_OPTIONS or (ssl_opt == "auto" and opts.ssl_cert) def add_tcp_mdns_rec(host, iport): rec = "tcp", [(host, iport)] netlog("%s : %s", rec, socket) mdns_recs.append(rec) if tcp_ssl: #SSL is also available on this TCP socket: rec = "ssl", [(host, iport)] netlog("%s : %s", rec, socket) mdns_recs.append(rec) netlog("setting up TCP sockets: %s", bind_tcp) for host, iport in bind_tcp: if iport < min_port: error_cb("invalid %s port number %i (minimum value is %i)" % (socktype, iport, min_port)) socket = setup_tcp_socket(host, iport) sockets.append(socket) add_tcp_mdns_rec(host, iport) # VSOCK: netlog("setting up vsock sockets: %s", bind_vsock) for cid, iport in bind_vsock: socket = setup_vsock_socket(cid, iport) sockets.append(socket) rec = "vsock", [("", iport)] netlog("%s : %s", rec, socket) mdns_recs.append(rec) # systemd socket activation: try: from xpra.server.sd_listen import get_sd_listen_sockets except ImportError: pass else: sd_sockets = get_sd_listen_sockets() netlog("systemd sockets: %s", sd_sockets) for stype, socket, addr in sd_sockets: sockets.append((stype, socket, addr)) netlog("%s : %s", (stype, [addr]), socket) if stype == "tcp": host, iport = addr add_tcp_mdns_rec(host, iport) sanitize_env() if POSIX: if xrd: os.environ["XDG_RUNTIME_DIR"] = xrd os.environ["XDG_SESSION_TYPE"] = "x11" if not starting_desktop: os.environ["XDG_CURRENT_DESKTOP"] = opts.wm_name configure_imsettings_env(opts.input_method) if display_name[0] != 'S': os.environ["DISPLAY"] = display_name os.environ["CKCON_X11_DISPLAY"] = display_name else: try: del os.environ["DISPLAY"] except: pass os.environ.update(protected_env) log("env=%s", os.environ) # Start the Xvfb server first to get the display_name if needed from xpra.server.vfb_util import start_Xvfb, check_xvfb_process, verify_display_ready, verify_gdk_display, set_initial_resolution odisplay_name = display_name xvfb = None xvfb_pid = None if start_vfb: assert not proxying and xauth_data pixel_depth = validate_pixel_depth(opts.pixel_depth) xvfb, display_name = start_Xvfb(opts.xvfb, pixel_depth, display_name, cwd, uid, gid, xauth_data) xvfb_pid = xvfb.pid #always update as we may now have the "real" display name: os.environ["DISPLAY"] = display_name os.environ["CKCON_X11_DISPLAY"] = display_name os.environ.update(protected_env) if display_name != odisplay_name and pam: pam.set_items({"XDISPLAY": display_name}) close_display = None if not proxying: def close_display(): # Close our display(s) first, so the server dying won't kill us. # (if gtk has been loaded) gtk_mod = sys.modules.get("gtk") if gtk_mod: for d in gtk_mod.gdk.display_manager_get().list_displays(): d.close() if xvfb_pid: log.info("killing xvfb with pid %s", xvfb_pid) try: os.kill(xvfb_pid, signal.SIGTERM) except OSError as e: log.info("failed to kill xvfb process with pid %s:", xvfb_pid) log.info(" %s", e) add_cleanup(close_display) if opts.daemon: def noerr(fn, *args): try: fn(*args) except: pass log_filename1 = select_log_file(log_dir, opts.log_file, display_name) if log_filename0 != log_filename1: # we now have the correct log filename, so use it: os.rename(log_filename0, log_filename1) if odisplay_name != display_name: #this may be used by scripts, let's try not to change it: noerr(stderr.write, "Actual display used: %s\n" % display_name) noerr(stderr.write, "Actual log file name is now: %s\n" % log_filename1) noerr(stderr.flush) noerr(stdout.close) noerr(stderr.close) #we should not be using stdout or stderr from this point: del stdout del stderr if not check_xvfb_process(xvfb): #xvfb problem: exit now return 1 if ROOT and (uid != 0 or gid != 0): log("root: switching to uid=%i, gid=%i", uid, gid) setuidgid(uid, gid) os.environ.update({ "HOME": home, "USER": username, "LOGNAME": username, }) shell = get_shell_for_uid(uid) if shell: os.environ["SHELL"] = shell os.environ.update(protected_env) if opts.chdir: os.chdir(opts.chdir) display = None if not proxying: no_gtk() if POSIX and (starting or starting_desktop or shadowing): #check that we can access the X11 display: if not verify_display_ready(xvfb, display_name, shadowing): return 1 display = verify_gdk_display(display_name) if not display: return 1 import gtk #@Reimport assert gtk #on win32, this ensures that we get the correct screen size to shadow: from xpra.platform.gui import init as gui_init gui_init() #setup unix domain socket: if not opts.socket_dir and not opts.socket_dirs: #we always need at least one valid socket dir from xpra.platform.paths import get_socket_dirs opts.socket_dirs = get_socket_dirs() local_sockets = setup_local_sockets(opts.bind, opts.socket_dir, opts.socket_dirs, display_name, clobber, opts.mmap_group, opts.socket_permissions, username, uid, gid) netlog("setting up local sockets: %s", local_sockets) for rec, cleanup_socket in local_sockets: socktype, socket, sockpath = rec #ie: ("unix-domain", sock, sockpath), cleanup_socket sockets.append(rec) netlog("%s : %s", (socktype, [sockpath]), socket) add_cleanup(cleanup_socket) if opts.mdns: ssh_port = get_ssh_port() rec = "ssh", [("", ssh_port)] netlog("%s : %s", rec, socket) if ssh_port and rec not in mdns_recs: mdns_recs.append(rec) kill_dbus = None if shadowing: from xpra.platform.shadow_server import ShadowServer app = ShadowServer() server_type_info = "shadow" elif proxying: from xpra.server.proxy.proxy_server import ProxyServer app = ProxyServer() server_type_info = "proxy" else: assert starting or starting_desktop or upgrading from xpra.x11.gtk2.gdk_display_source import init_gdk_display_source init_gdk_display_source() #(now we can access the X11 server) if xvfb_pid is not None: #save the new pid (we should have one): save_xvfb_pid(xvfb_pid) if POSIX: dbus_pid = -1 dbus_env = {} if clobber: #get the saved pids and env dbus_pid = get_dbus_pid() dbus_env = get_dbus_env() log("retrieved existing dbus attributes") else: assert starting or starting_desktop if xvfb_pid is not None: #save the new pid (we should have one): save_xvfb_pid(xvfb_pid) bus_address = protected_env.get("DBUS_SESSION_BUS_ADDRESS") log("dbus_launch=%s, current DBUS_SESSION_BUS_ADDRESS=%s", opts.dbus_launch, bus_address) if opts.dbus_launch and not bus_address: #start a dbus server: def kill_dbus(): log("kill_dbus: dbus_pid=%s" % dbus_pid) if dbus_pid <= 0: return try: os.kill(dbus_pid, signal.SIGINT) except Exception as e: log.warn( "Warning: error trying to stop dbus with pid %i:", dbus_pid) log.warn(" %s", e) add_cleanup(kill_dbus) #this also updates os.environ with the dbus attributes: dbus_pid, dbus_env = start_dbus(opts.dbus_launch) if dbus_pid > 0: save_dbus_pid(dbus_pid) if dbus_env: save_dbus_env(dbus_env) log("dbus attributes: pid=%s, env=%s", dbus_pid, dbus_env) if dbus_env: os.environ.update(dbus_env) os.environ.update(protected_env) log("env=%s", os.environ) try: # This import is delayed because the module depends on gtk: from xpra.x11.bindings.window_bindings import X11WindowBindings X11Window = X11WindowBindings() if (starting or starting_desktop) and not clobber and opts.resize_display: set_initial_resolution(starting_desktop) except ImportError as e: log.error( "Failed to load Xpra server components, check your installation: %s" % e) return 1 if starting or upgrading: if not X11Window.displayHasXComposite(): log.error( "Xpra 'start' subcommand runs as a compositing manager") log.error( " it cannot use a display which lacks the XComposite extension!" ) return 1 if starting: #check for an existing window manager: from xpra.x11.gtk2.wm import wm_check if not wm_check(display, opts.wm_name, upgrading): return 1 log("XShape=%s", X11Window.displayHasXShape()) from xpra.x11.server import XpraServer app = XpraServer(clobber) server_type_info = "xpra" else: assert starting_desktop from xpra.x11.desktop_server import XpraDesktopServer app = XpraDesktopServer() server_type_info = "xpra desktop" #publish mdns records: if opts.mdns: from xpra.os_util import strtobytes from xpra.platform.info import get_username from xpra.server.socket_util import mdns_publish mdns_info = { "display": display_name, "username": get_username(), "uuid": strtobytes(app.uuid), "platform": sys.platform, "type": { "xpra": "seamless", "xpra desktop": "desktop" }.get(server_type_info, server_type_info), } if opts.session_name: mdns_info["session"] = opts.session_name for mode, listen_on in mdns_recs: mdns_publish(display_name, mode, listen_on, mdns_info) try: app._ssl_wrap_socket = wrap_socket_fn app.original_desktop_display = desktop_display app.exec_cwd = opts.chdir or cwd app.init(opts) app.init_components(opts) except InitException as e: log.error("xpra server initialization error:") log.error(" %s", e) return 1 except Exception as e: log.error("Error: cannot start the %s server", server_type_info, exc_info=True) log.error(str(e)) log.info("") return 1 #honour start child, html webserver, and setup child reaper if not proxying and not upgrading: if opts.exit_with_children: assert opts.start_child, "exit-with-children was specified but start-child is missing!" app.start_commands = opts.start app.start_child_commands = opts.start_child app.start_after_connect = opts.start_after_connect app.start_child_after_connect = opts.start_child_after_connect app.start_on_connect = opts.start_on_connect app.start_child_on_connect = opts.start_child_on_connect app.exec_start_commands() del opts log("%s(%s)", app.init_sockets, sockets) app.init_sockets(sockets) log("%s(%s)", app.init_when_ready, _when_ready) app.init_when_ready(_when_ready) try: #from here on, we own the vfb, even if we inherited one: if (starting or starting_desktop or upgrading) and clobber: #and it will be killed if exit cleanly: xvfb_pid = get_xvfb_pid() log("running %s", app.run) e = app.run() log("%s()=%s", app.run, e) except KeyboardInterrupt: log.info("stopping on KeyboardInterrupt") e = 0 except Exception as e: log.error("server error", exc_info=True) e = -128 if e > 0: # Upgrading/exiting, so leave X and dbus servers running if close_display: _cleanups.remove(close_display) if kill_dbus: _cleanups.remove(kill_dbus) from xpra.server.server_core import ServerCore if e == ServerCore.EXITING_CODE: log.info("exiting: not cleaning up Xvfb") else: log.info("upgrading: not cleaning up Xvfb") log("cleanups=%s", _cleanups) e = 0 return e