#!/usr/bin/python # -*- coding: utf-8 -*- # # The Qubes OS Project, http://www.qubes-os.org # # Copyright (C) 2011 Marek Marczykowski # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # # import subprocess import re import os import sys import shutil import pipes from optparse import OptionParser from qubes.qubes import QubesVmCollection,QubesException,system_path from qubes.qubes import QubesHVm from qubes.qubes import vm_files import qubes.imgconverter # fields required to be present (and verified) in retrieved desktop file required_fields = [ "Name", "Exec" ] #limits appmenus_line_size = 1024 appmenus_line_count = 100000 # regexps for sanitization of retrieved values std_re = re.compile(r"^[/a-zA-Z0-9.,&() -]*$") fields_regexp = { "Name": std_re, "GenericName": std_re, "Comment": std_re, "Categories": re.compile(r"^[a-zA-Z0-9/.;:'() -]*$"), "Exec": re.compile(r"^[a-zA-Z0-9()%&>/{}\"'\\:.= -]*$"), "Icon": re.compile(r"^[a-zA-Z0-9/_.-]*$"), } CATEGORIES_WHITELIST = set([ # Main Categories # http://standards.freedesktop.org/menu-spec/1.1/apa.html 20140507 'AudioVideo', 'Audio', 'Video', 'Development', 'Education', 'Game', 'Graphics', 'Network', 'Office', 'Science', 'Settings', 'System', 'Utility', # Additional Categories # http://standards.freedesktop.org/menu-spec/1.1/apas02.html 'Building', 'Debugger', 'IDE', 'GUIDesigner', 'Profiling', 'RevisionControl', 'Translation', 'Calendar', 'ContactManagement', 'Database', 'Dictionary', 'Chart', 'Email', 'Finance', 'FlowChart', 'PDA', 'ProjectManagement', 'Presentation', 'Spreadsheet', 'WordProcessor', '2DGraphics', 'VectorGraphics', 'RasterGraphics', '3DGraphics', 'Scanning', 'OCR', 'Photography', 'Publishing', 'Viewer', 'TextTools', 'DesktopSettings', 'HardwareSettings', 'Printing', 'PackageManager', 'Dialup', 'InstantMessaging', 'Chat', 'IRCClient', 'Feed', 'FileTransfer', 'HamRadio', 'News', 'P2P', 'RemoteAccess', 'Telephony', 'TelephonyTools', 'VideoConference', 'WebBrowser', 'WebDevelopment', 'Midi', 'Mixer', 'Sequencer', 'Tuner', 'TV', 'AudioVideoEditing', 'Player', 'Recorder', 'DiscBurning', 'ActionGame', 'AdventureGame', 'ArcadeGame', 'BoardGame', 'BlocksGame', 'CardGame', 'KidsGame', 'LogicGame', 'RolePlaying', 'Shooter', 'Simulation', 'SportsGame', 'StrategyGame', 'Art', 'Construction', 'Music', 'Languages', 'ArtificialIntelligence', 'Astronomy', 'Biology', 'Chemistry', 'ComputerScience', 'DataVisualization', 'Economy', 'Electricity', 'Geography', 'Geology', 'Geoscience', 'History', 'Humanities', 'ImageProcessing', 'Literature', 'Maps', 'Math', 'NumericalAnalysis', 'MedicalSoftware', 'Physics', 'Robotics', 'Spirituality', 'Sports', 'ParallelComputing', 'Amusement', 'Archiving', 'Compression', 'Electronics', 'Emulator', 'Engineering', 'FileTools', 'FileManager', 'TerminalEmulator', 'Filesystem', 'Monitor', 'Security', 'Accessibility', 'Calculator', 'Clock', 'TextEditor', 'Documentation', 'Adult', 'Core', 'KDE', 'GNOME', 'XFCE', 'GTK', 'Qt', 'Motif', 'Java', 'ConsoleOnly', # Reserved Categories (not whitelisted) # http://standards.freedesktop.org/menu-spec/1.1/apas03.html # 'Screensaver', 'TrayIcon', 'Applet', 'Shell', ]) def sanitise_categories(untrusted_value): untrusted_categories = (c.strip() for c in untrusted_value.split(';') if c) categories = (c for c in untrusted_categories if c in CATEGORIES_WHITELIST) return ';'.join(categories) + ';' def fallback_hvm_appmenulist(): p = subprocess.Popen(["grep", "-rH", "=", "/usr/share/qubes-appmenus/hvm"], stdout=subprocess.PIPE) (stdout, stderr) = p.communicate() return stdout.splitlines() def get_appmenus(vm): global appmenus_line_count global appmenus_line_size untrusted_appmenulist = [] if vm is None: while appmenus_line_count > 0: untrusted_line = sys.stdin.readline(appmenus_line_size) if untrusted_line == "": break untrusted_appmenulist.append(untrusted_line.strip()) appmenus_line_count -= 1 if appmenus_line_count == 0: raise QubesException("Line count limit exceeded") else: p = vm.run('QUBESRPC qubes.GetAppmenus dom0', passio_popen=True, gui=False) while appmenus_line_count > 0: untrusted_line = p.stdout.readline(appmenus_line_size) if untrusted_line == "": break untrusted_appmenulist.append(untrusted_line.strip()) appmenus_line_count -= 1 p.wait() if p.returncode != 0: if isinstance(vm, QubesHVm): untrusted_appmenulist = fallback_hvm_appmenulist() else: raise QubesException("Error getting application list") if appmenus_line_count == 0: raise QubesException("Line count limit exceeded") row_no = 0 appmenus = {} line_rx = re.compile(r"([a-zA-Z0-9.()_-]+.desktop):([a-zA-Z0-9-]+(?:\[[a-zA-Z@_]+\])?)=(.*)") ignore_rx = re.compile(r".*([a-zA-Z0-9._-]+.desktop):(#.*|\s+)$") for untrusted_line in untrusted_appmenulist: # Ignore blank lines and comments if len(untrusted_line) == 0 or ignore_rx.match(untrusted_line): continue # use search instead of match to skip file path untrusted_m = line_rx.search(untrusted_line) if untrusted_m: filename = untrusted_m.group(1) assert '/' not in filename assert '\0' not in filename untrusted_key = untrusted_m.group(2) assert '\0' not in untrusted_key assert '\x1b' not in untrusted_key assert '=' not in untrusted_key untrusted_value = untrusted_m.group(3) # TODO add key-dependent asserts # Look only at predefined keys if fields_regexp.has_key(untrusted_key): if fields_regexp[untrusted_key].match(untrusted_value): # now values are sanitized key = untrusted_key if key == 'Categories': value = sanitise_categories(untrusted_value) else: value = untrusted_value if not appmenus.has_key(filename): appmenus[filename] = {} appmenus[filename][key]=value else: print >>sys.stderr, "Warning: ignoring key %r of %s" % (untrusted_key, filename) # else: ignore this key return appmenus def create_template(path, values): # check if all required fields are present for key in required_fields: if not values.has_key(key): print >>sys.stderr, "Warning: not creating/updating '%s' because of missing '%s' key" % (path, key) return desktop_file = open(path, "w") desktop_file.write("[Desktop Entry]\n") desktop_file.write("Version=1.0\n") desktop_file.write("Type=Application\n") desktop_file.write("Terminal=false\n") desktop_file.write("X-Qubes-VmName=%VMNAME%\n") if 'Icon' in values: icon_file = os.path.splitext(os.path.split(path)[1])[0] + '.png' desktop_file.write("Icon={0}\n".format(os.path.join( '%VMDIR%', vm_files['appmenus_icons_subdir'], icon_file))) else: desktop_file.write("Icon=%XDGICON%\n") for key in ["Name", "GenericName" ]: if values.has_key(key): desktop_file.write("{0}=%VMNAME%: {1}\n".format(key, values[key])) for key in [ "Comment", "Categories" ]: if values.has_key(key): desktop_file.write("{0}={1}\n".format(key, values[key])) desktop_file.write("Exec=qvm-run -q --tray -a %VMNAME% -- {0}\n".format(pipes.quote(values['Exec']))) desktop_file.close() def main(): env_vmname = os.environ.get("QREXEC_REMOTE_DOMAIN") usage = "usage: %prog [options] \n"\ "Updates desktop file templates for given StandaloneVM or TemplateVM" parser = OptionParser (usage) parser.add_option ("-v", "--verbose", action="store_true", dest="verbose", default=False) parser.add_option ("--force-root", action="store_true", dest="force_root", default=False, help="Force to run, even with root privileges") parser.add_option ("--force-rpc", action="store_true", dest="force_rpc", default=False, help="Force to start a new RPC call, even if called from existing one") (options, args) = parser.parse_args () if (len (args) != 1) and env_vmname is None: parser.error ("You must specify at least the VM name!") if env_vmname: vmname=env_vmname else: vmname=args[0] if os.geteuid() == 0: if not options.force_root: print >> sys.stderr, "*** Running this tool as root is strongly discouraged, this will lead you in permissions problems." print >> sys.stderr, "Retry as unprivileged user." print >> sys.stderr, "... or use --force-root to continue anyway." exit(1) qvm_collection = QubesVmCollection() qvm_collection.lock_db_for_reading() qvm_collection.load() qvm_collection.unlock_db() vm = qvm_collection.get_vm_by_name(vmname) if vm is None: print >>sys.stderr, "ERROR: A VM with the name '{0}' does not exist in the system.".format(vmname) exit(1) if vm.template is not None: print >>sys.stderr, "ERROR: To sync appmenus for template based VM, do it on template instead" exit(1) if not vm.is_running(): print >>sys.stderr, "ERROR: Appmenus can be retrieved only from running VM - start it first" exit(1) new_appmenus = {} if env_vmname is None or options.force_rpc: new_appmenus = get_appmenus(vm) else: options.verbose = False new_appmenus = get_appmenus(None) if len(new_appmenus) == 0: print >>sys.stderr, "ERROR: No appmenus received, terminating" exit(1) if not os.path.exists(vm.appmenus_templates_dir): os.mkdir(vm.appmenus_templates_dir) if not os.path.exists(vm.appmenus_template_icons_dir): os.mkdir(vm.appmenus_template_icons_dir) # Create new/update existing templates if options.verbose: print >> sys.stderr, "--> Got {0} appmenus, storing to disk".format(str(len(new_appmenus))) for appmenu_file in new_appmenus.keys(): if options.verbose: if os.path.exists(os.path.join(vm.appmenus_templates_dir, appmenu_file)): print >> sys.stderr, "---> Updating {0}".format(appmenu_file) else: print >> sys.stderr, "---> Creating {0}".format(appmenu_file) if 'Icon' in new_appmenus[appmenu_file]: # the following line is used for time comparison # del new_appmenus[appmenu_file]['Icon'] icondest = os.path.join(vm.appmenus_template_icons_dir, os.path.splitext(appmenu_file)[0] + '.png') try: qubes.imgconverter.Image.get_xdg_icon_from_vm(vm, new_appmenus[appmenu_file]['Icon']).save(icondest) except Exception, e: print >> sys.stderr, '----> Failed to get icon for {0}: {1!s}'.format(appmenu_file, e) if os.path.exists(icondest): print >> sys.stderr, '-----> Found old icon, using it instead' else: del new_appmenus[appmenu_file]['Icon'] create_template(os.path.join(vm.appmenus_templates_dir, appmenu_file), new_appmenus[appmenu_file]) # Delete appmenus of removed applications if options.verbose: print >> sys.stderr, "--> Cleaning old files" for appmenu_file in os.listdir(vm.appmenus_templates_dir): if not appmenu_file.endswith('.desktop'): continue if not new_appmenus.has_key(appmenu_file): if options.verbose: print >> sys.stderr, "---> Removing {0}".format(appmenu_file) os.unlink(os.path.join(vm.appmenus_templates_dir, appmenu_file)) if isinstance(vm, QubesHVm): if not os.path.exists(os.path.join(vm.appmenus_templates_dir, os.path.basename(system_path['appmenu_start_hvm_template']))): shutil.copy(system_path['appmenu_start_hvm_template'], vm.appmenus_templates_dir) if hasattr(vm, 'appvms'): os.putenv('SKIP_CACHE_REBUILD', '1') for child_vm in vm.appvms.values(): try: child_vm.appmenus_recreate() except Exception, e: print >> sys.stderr, "---> Failed to recreate appmenus for " \ "'{0}': {1}".format(child_vm.name, str(e)) if 'KDE_SESSION_UID' in os.environ: subprocess.call(['kbuildsycoca4']) os.unsetenv('SKIP_CACHE_REBUILD') main()