# ---------------------------------------------------------------------- # Copyright (C) 2013 Kshitij Gupta # Copyright (C) 2014-2017 Christian Boltz # # This program is free software; you can redistribute it and/or # modify it under the terms of version 2 of the GNU General Public # License as published by the Free Software Foundation. # # 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. # # ---------------------------------------------------------------------- # No old version logs, only 2.6 + supported from __future__ import division, with_statement import os import re import shutil import subprocess import sys import time import traceback import atexit import tempfile import apparmor.config import apparmor.logparser import apparmor.severity from copy import deepcopy from apparmor.aare import AARE from apparmor.common import (AppArmorException, AppArmorBug, open_file_read, valid_path, hasher, open_file_write, DebugLogger) import apparmor.ui as aaui from apparmor.aamode import str_to_mode, split_mode from apparmor.regex import (RE_PROFILE_START, RE_PROFILE_END, RE_PROFILE_LINK, RE_PROFILE_ALIAS, RE_PROFILE_BOOLEAN, RE_PROFILE_VARIABLE, RE_PROFILE_CONDITIONAL, RE_PROFILE_CONDITIONAL_VARIABLE, RE_PROFILE_CONDITIONAL_BOOLEAN, RE_PROFILE_CHANGE_HAT, RE_PROFILE_HAT_DEF, RE_PROFILE_MOUNT, RE_PROFILE_PIVOT_ROOT, RE_PROFILE_UNIX, RE_RULE_HAS_COMMA, RE_HAS_COMMENT_SPLIT, strip_quotes, parse_profile_start_line, re_match_include ) from apparmor.profile_storage import ProfileStorage, ruletypes import apparmor.rules as aarules from apparmor.rule.capability import CapabilityRule from apparmor.rule.change_profile import ChangeProfileRule from apparmor.rule.dbus import DbusRule from apparmor.rule.file import FileRule from apparmor.rule.network import NetworkRule from apparmor.rule.ptrace import PtraceRule from apparmor.rule.rlimit import RlimitRule from apparmor.rule.signal import SignalRule from apparmor.rule import quote_if_needed # setup module translations from apparmor.translations import init_translation _ = init_translation() # Setup logging incase of debugging is enabled debug_logger = DebugLogger('aa') # The database for severity sev_db = None # The file to read log messages from ### Was our logfile = None CONFDIR = None conf = None cfg = None repo_cfg = None parser = None profile_dir = None extra_profile_dir = None ### end our # To keep track of previously included profile fragments include = dict() existing_profiles = dict() # To store the globs entered by users so they can be provided again # format: user_globs['/foo*'] = AARE('/foo*') user_globs = {} ## Variables used under logprof transitions = hasher() aa = hasher() # Profiles originally in sd, replace by aa original_aa = hasher() extras = hasher() # Inactive profiles from extras ### end our log_pid = dict() # handed over to ReadLog, gets filled in logparser.py. The only case the previous content of this variable _might_(?) be used is aa-genprof (multiple do_logprof_pass() runs) profile_changes = hasher() prelog = hasher() changed = dict() created = [] helpers = dict() # Preserve this between passes # was our ### logprof ends filelist = hasher() # File level variables and stuff in config files def on_exit(): """Shutdowns the logger and records exit if debugging enabled""" debug_logger.debug('Exiting..') debug_logger.shutdown() # Register the on_exit method with atexit atexit.register(on_exit) def check_for_LD_XXX(file): """Returns True if specified program contains references to LD_PRELOAD or LD_LIBRARY_PATH to give the Px/Ux code better suggestions""" if not os.path.isfile(file): return False size = os.stat(file).st_size # Limit to checking files under 100k for the sake of speed if size > 100000: return False with open(file, 'rb') as f_in: for line in f_in: if b'LD_PRELOAD' in line or b'LD_LIBRARY_PATH' in line: return True return False def fatal_error(message): # Get the traceback to the message tb_stack = traceback.format_list(traceback.extract_stack()) tb_stack = ''.join(tb_stack) # Add the traceback to message message = tb_stack + '\n\n' + message debug_logger.error(message) # Else tell user what happened aaui.UI_Important(message) sys.exit(1) def check_for_apparmor(filesystem='/proc/filesystems', mounts='/proc/mounts'): """Finds and returns the mountpoint for apparmor None otherwise""" support_securityfs = False aa_mountpoint = None if valid_path(filesystem): with open_file_read(filesystem) as f_in: for line in f_in: if 'securityfs' in line: support_securityfs = True break if valid_path(mounts) and support_securityfs: with open_file_read(mounts) as f_in: for line in f_in: split = line.split() if len(split) > 2 and split[2] == 'securityfs': mountpoint = split[1] + '/apparmor' # Check if apparmor is actually mounted there # XXX valid_path() only checks the syntax, but not if the directory exists! if valid_path(mountpoint) and valid_path(mountpoint + '/profiles'): aa_mountpoint = mountpoint break return aa_mountpoint def which(file): """Returns the executable fullpath for the file, None otherwise""" if sys.version_info >= (3, 3): return shutil.which(file) env_dirs = os.getenv('PATH').split(':') for env_dir in env_dirs: env_path = env_dir + '/' + file # Test if the path is executable or not if os.access(env_path, os.X_OK): return env_path return None def get_full_path(original_path): """Return the full path after resolving any symlinks""" path = original_path link_count = 0 if not path.startswith('/'): path = os.getcwd() + '/' + path while os.path.islink(path): link_count += 1 if link_count > 64: fatal_error(_("Followed too many links while resolving %s") % (original_path)) direc, file = os.path.split(path) link = os.readlink(path) # If the link an absolute path if link.startswith('/'): path = link else: # Link is relative path path = direc + '/' + link return os.path.realpath(path) def find_executable(bin_path): """Returns the full executable path for the given executable, None otherwise""" full_bin = None if os.path.exists(bin_path): full_bin = get_full_path(bin_path) else: if '/' not in bin_path: env_bin = which(bin_path) if env_bin: full_bin = get_full_path(env_bin) if full_bin and os.path.exists(full_bin): return full_bin return None def get_profile_filename(profile): """Returns the full profile name""" if existing_profiles.get(profile, False): return existing_profiles[profile] elif profile.startswith('/'): # Remove leading / profile = profile[1:] else: profile = "profile_" + profile profile = profile.replace('/', '.') full_profilename = profile_dir + '/' + profile return full_profilename def name_to_prof_filename(prof_filename): """Returns the profile""" if prof_filename.startswith(profile_dir): profile = prof_filename.split(profile_dir, 1)[1] return (prof_filename, profile) else: bin_path = find_executable(prof_filename) if bin_path: prof_filename = get_profile_filename(bin_path) if os.path.isfile(prof_filename): return (prof_filename, bin_path) return None, None def complain(path): """Sets the profile to complain mode if it exists""" prof_filename, name = name_to_prof_filename(path) if not prof_filename: fatal_error(_("Can't find %s") % path) set_complain(prof_filename, name) def enforce(path): """Sets the profile to enforce mode if it exists""" prof_filename, name = name_to_prof_filename(path) if not prof_filename: fatal_error(_("Can't find %s") % path) set_enforce(prof_filename, name) def set_complain(filename, program): """Sets the profile to complain mode""" aaui.UI_Info(_('Setting %s to complain mode.') % (filename if program is None else program)) # a force-complain symlink is more packaging-friendly, but breaks caching # create_symlink('force-complain', filename) delete_symlink('disable', filename) change_profile_flags(filename, program, 'complain', True) def set_enforce(filename, program): """Sets the profile to enforce mode""" aaui.UI_Info(_('Setting %s to enforce mode.') % (filename if program is None else program)) delete_symlink('force-complain', filename) delete_symlink('disable', filename) change_profile_flags(filename, program, 'complain', False) def delete_symlink(subdir, filename): path = filename link = re.sub('^%s' % profile_dir, '%s/%s' % (profile_dir, subdir), path) if link != path and os.path.islink(link): os.remove(link) def create_symlink(subdir, filename): path = filename bname = os.path.basename(filename) if not bname: raise AppArmorException(_('Unable to find basename for %s.') % filename) #print(filename) link = re.sub('^%s' % profile_dir, '%s/%s' % (profile_dir, subdir), path) #print(link) #link = link + '/%s'%bname #print(link) symlink_dir = os.path.dirname(link) if not os.path.exists(symlink_dir): # If the symlink directory does not exist create it os.makedirs(symlink_dir) if not os.path.exists(link): try: os.symlink(filename, link) except: raise AppArmorException(_('Could not create %(link)s symlink to %(file)s.') % { 'link': link, 'file': filename }) def head(file): """Returns the first/head line of the file""" first = '' if os.path.isfile(file): with open_file_read(file) as f_in: try: first = f_in.readline().rstrip() except UnicodeDecodeError: pass return first else: raise AppArmorException(_('Unable to read first line from %s: File Not Found') % file) def get_output(params): '''Runs the program with the given args and returns the return code and stdout (as list of lines)''' try: # Get the output of the program output = subprocess.check_output(params) ret = 0 except OSError as e: raise AppArmorException(_("Unable to fork: %(program)s\n\t%(error)s") % { 'program': params[0], 'error': str(e) }) except subprocess.CalledProcessError as e: # If exit code != 0 output = e.output ret = e.returncode output = output.decode('utf-8').split('\n') # Remove the extra empty string caused due to \n if present if output[len(output) - 1] == '': output.pop() return (ret, output) def get_reqs(file): """Returns a list of paths from ldd output""" pattern1 = re.compile('^\s*\S+ => (\/\S+)') pattern2 = re.compile('^\s*(\/\S+)') reqs = [] ldd = conf.find_first_file(cfg['settings'].get('ldd')) or '/usr/bin/ldd' if not os.path.isfile(ldd) or not os.access(ldd, os.EX_OK): raise AppArmorException('Can\'t find ldd') ret, ldd_out = get_output([ldd, file]) if ret == 0 or ret == 1: for line in ldd_out: if 'not a dynamic executable' in line: # comes with ret == 1 break if 'cannot read header' in line: break if 'statically linked' in line: break match = pattern1.search(line) if match: reqs.append(match.groups()[0]) else: match = pattern2.search(line) if match: reqs.append(match.groups()[0]) return reqs def handle_binfmt(profile, path): """Modifies the profile to add the requirements""" reqs_processed = dict() reqs = get_reqs(path) while reqs: library = reqs.pop() library = get_full_path(library) # resolve symlinks if not reqs_processed.get(library, False): if get_reqs(library): reqs += get_reqs(library) reqs_processed[library] = True library_rule = FileRule(library, 'mr', None, FileRule.ALL, owner=False, log_event=True) if not is_known_rule(profile, 'file', library_rule): globbed_library = glob_common(library) if globbed_library: # glob_common returns a list, just use the first element (typically '/lib/libfoo.so.*') library_rule = FileRule(globbed_library[0], 'mr', None, FileRule.ALL, owner=False) profile['file'].add(library_rule) def get_interpreter_and_abstraction(exec_target): '''Check if exec_target is a script. If a hashbang is found, check if we have an abstraction for it. Returns (interpreter_path, abstraction) - interpreter_path is none if exec_target is not a script or doesn't have a hashbang line - abstraction is None if no matching abstraction exists''' if not os.path.exists(exec_target): aaui.UI_Important(_('Execute target %s does not exist!') % exec_target) return None, None if not os.path.isfile(exec_target): aaui.UI_Important(_('Execute target %s is not a file!') % exec_target) return None, None hashbang = head(exec_target) if not hashbang.startswith('#!'): return None, None # get the interpreter (without parameters) interpreter = hashbang[2:].strip().split()[0] interpreter_path = get_full_path(interpreter) interpreter = re.sub('^(/usr)?/bin/', '', interpreter_path) if interpreter in ['bash', 'dash', 'sh']: abstraction = 'abstractions/bash' elif interpreter == 'perl': abstraction = 'abstractions/perl' elif re.search('^python([23]|[23]\.[0-9]+)?$', interpreter): abstraction = 'abstractions/python' elif re.search('^ruby([0-9]+(\.[0-9]+)*)?$', interpreter): abstraction = 'abstractions/ruby' else: abstraction = None return interpreter_path, abstraction def get_inactive_profile(local_profile): if extras.get(local_profile, False): return {local_profile: extras[local_profile]} return dict() def create_new_profile(localfile, is_stub=False): local_profile = hasher() local_profile[localfile] = ProfileStorage('NEW', localfile, 'create_new_profile()') local_profile[localfile]['flags'] = 'complain' local_profile[localfile]['include']['abstractions/base'] = 1 if os.path.exists(localfile) and os.path.isfile(localfile): interpreter_path, abstraction = get_interpreter_and_abstraction(localfile) if interpreter_path: local_profile[localfile]['file'].add(FileRule(localfile, 'r', None, FileRule.ALL, owner=False)) local_profile[localfile]['file'].add(FileRule(interpreter_path, None, 'ix', FileRule.ALL, owner=False)) if abstraction: local_profile[localfile]['include'][abstraction] = True handle_binfmt(local_profile[localfile], interpreter_path) else: local_profile[localfile]['file'].add(FileRule(localfile, 'mr', None, FileRule.ALL, owner=False)) handle_binfmt(local_profile[localfile], localfile) # Add required hats to the profile if they match the localfile for hatglob in cfg['required_hats'].keys(): if re.search(hatglob, localfile): for hat in sorted(cfg['required_hats'][hatglob].split()): if not local_profile.get(hat, False): local_profile[hat] = ProfileStorage('NEW', hat, 'create_new_profile() required_hats') local_profile[hat]['flags'] = 'complain' if not is_stub: created.append(localfile) changed[localfile] = True debug_logger.debug("Profile for %s:\n\t%s" % (localfile, local_profile.__str__())) return {localfile: local_profile} def delete_profile(local_prof): """Deletes the specified file from the disk and remove it from our list""" profile_file = get_profile_filename(local_prof) if os.path.isfile(profile_file): os.remove(profile_file) if aa.get(local_prof, False): aa.pop(local_prof) #prof_unload(local_prof) def confirm_and_abort(): ans = aaui.UI_YesNo(_('Are you sure you want to abandon this set of profile changes and exit?'), 'n') if ans == 'y': aaui.UI_Info(_('Abandoning all changes.')) for prof in created: delete_profile(prof) sys.exit(0) def get_profile(prof_name): profile_data = None distro = cfg['repository']['distro'] repo_url = cfg['repository']['url'] # local_profiles = [] profile_hash = hasher() if repo_is_enabled(): aaui.UI_BusyStart(_('Connecting to repository...')) status_ok, ret = fetch_profiles_by_name(repo_url, distro, prof_name) aaui.UI_BusyStop() if status_ok: profile_hash = ret else: aaui.UI_Important(_('WARNING: Error fetching profiles from the repository')) inactive_profile = get_inactive_profile(prof_name) if inactive_profile: uname = 'Inactive local profile for %s' % prof_name inactive_profile[prof_name][prof_name]['flags'] = 'complain' inactive_profile[prof_name][prof_name].pop('filename') profile_hash[uname]['username'] = uname profile_hash[uname]['profile_type'] = 'INACTIVE_LOCAL' profile_hash[uname]['profile'] = serialize_profile(inactive_profile[prof_name], prof_name, None) profile_hash[uname]['profile_data'] = inactive_profile existing_profiles.pop(prof_name) # remove profile filename from list to force storing in /etc/apparmor.d/ instead of extra_profile_dir # If no profiles in repo and no inactive profiles if not profile_hash.keys(): return None options = [] tmp_list = [] preferred_present = False preferred_user = cfg['repository'].get('preferred_user', 'NOVELL') for p in profile_hash.keys(): if profile_hash[p]['username'] == preferred_user: preferred_present = True else: tmp_list.append(profile_hash[p]['username']) if preferred_present: options.append(preferred_user) options += tmp_list q = aaui.PromptQuestion() q.headers = ['Profile', prof_name] q.functions = ['CMD_VIEW_PROFILE', 'CMD_USE_PROFILE', 'CMD_CREATE_PROFILE', 'CMD_ABORT'] q.default = "CMD_VIEW_PROFILE" q.options = options q.selected = 0 ans = '' while 'CMD_USE_PROFILE' not in ans and 'CMD_CREATE_PROFILE' not in ans: ans, arg = q.promptUser() p = profile_hash[options[arg]] q.selected = options.index(options[arg]) if ans == 'CMD_VIEW_PROFILE': pager = get_pager() proc = subprocess.Popen(pager, stdin=subprocess.PIPE) # proc.communicate('Profile submitted by %s:\n\n%s\n\n' % # (options[arg], p['profile'])) proc.communicate(p['profile'].encode()) proc.kill() elif ans == 'CMD_USE_PROFILE': if p['profile_type'] == 'INACTIVE_LOCAL': profile_data = p['profile_data'] created.append(prof_name) else: profile_data = parse_repo_profile(prof_name, repo_url, p) return profile_data def activate_repo_profiles(url, profiles, complain): read_profiles() try: for p in profiles: pname = p[0] profile_data = parse_repo_profile(pname, url, p[1]) attach_profile_data(aa, profile_data) write_profile(pname) if complain: fname = get_profile_filename(pname) set_profile_flags(profile_dir + fname, 'complain') aaui.UI_Info(_('Setting %s to complain mode.') % pname) except Exception as e: sys.stderr.write(_("Error activating profiles: %s") % e) def autodep(bin_name, pname=''): bin_full = None global repo_cfg if not repo_cfg and not cfg['repository'].get('url', False): repo_conf = apparmor.config.Config('shell', CONFDIR) repo_cfg = repo_conf.read_config('repository.conf') if not repo_cfg.get('repository', False) or repo_cfg['repository']['enabled'] == 'later': UI_ask_to_enable_repo() if bin_name: bin_full = find_executable(bin_name) #if not bin_full: # bin_full = bin_name #if not bin_full.startswith('/'): #return None # Return if exectuable path not found if not bin_full: return None else: bin_full = pname # for named profiles pname = bin_full read_inactive_profiles() profile_data = get_profile(pname) # Create a new profile if no existing profile if not profile_data: profile_data = create_new_profile(pname) file = get_profile_filename(pname) profile_data[pname][pname]['filename'] = None # will be stored in /etc/apparmor.d when saving, so it shouldn't carry the extra_profile_dir filename attach_profile_data(aa, profile_data) attach_profile_data(original_aa, profile_data) if os.path.isfile(profile_dir + '/tunables/global'): if not filelist.get(file, False): filelist[file] = hasher() filelist[file]['include']['tunables/global'] = True filelist[file]['profiles'][pname] = hasher() filelist[file]['profiles'][pname][pname] = True write_profile_ui_feedback(pname) def get_profile_flags(filename, program): # To-Do # XXX If more than one profile in a file then second one is being ignored XXX # Do we return flags for both or flags = '' with open_file_read(filename) as f_in: for line in f_in: if RE_PROFILE_START.search(line): matches = parse_profile_start_line(line, filename) profile = matches['profile'] flags = matches['flags'] if profile == program or program is None: return flags raise AppArmorException(_('%s contains no profile') % filename) def change_profile_flags(filename, program, flag, set_flag): old_flags = get_profile_flags(filename, program) newflags = [] if old_flags: # Flags maybe white-space and/or , separated old_flags = old_flags.split(',') if not isinstance(old_flags, str): for i in old_flags: newflags += i.split() else: newflags = old_flags.split() #newflags = [lambda x:x.strip(), oldflags] if set_flag: if flag not in newflags: newflags.append(flag) else: if flag in newflags: newflags.remove(flag) newflags = ','.join(newflags) set_profile_flags(filename, program, newflags) def set_profile_flags(prof_filename, program, newflags): """Reads the old profile file and updates the flags accordingly""" # TODO: count the number of matching lines (separated by profile and hat?) and return it # so that code calling this function can make sure to only report success if there was a match # TODO: existing (unrelated) flags of hats and child profiles are overwritten - ideally, we should # keep them and only add or remove a given flag # TODO: change child profile flags even if program is specified found = False if newflags and newflags.strip() == '': raise AppArmorBug('New flags for %s contain only whitespace' % prof_filename) with open_file_read(prof_filename) as f_in: temp_file = tempfile.NamedTemporaryFile('w', prefix=prof_filename, suffix='~', delete=False, dir=profile_dir) shutil.copymode(prof_filename, temp_file.name) with open_file_write(temp_file.name) as f_out: for line in f_in: if RE_PROFILE_START.search(line): matches = parse_profile_start_line(line, prof_filename) space = matches['leadingspace'] or '' profile = matches['profile'] if profile == program or program is None: found = True header_data = { 'attachment': matches['attachment'] or '', 'flags': newflags, 'profile_keyword': matches['profile_keyword'], 'header_comment': matches['comment'] or '', } line = write_header(header_data, len(space)/2, profile, False, True) line = '%s\n' % line[0] elif RE_PROFILE_HAT_DEF.search(line): matches = RE_PROFILE_HAT_DEF.search(line) space = matches.group('leadingspace') or '' hat_keyword = matches.group('hat_keyword') hat = matches.group('hat') comment = matches.group('comment') or '' if comment: comment = ' %s' % comment if newflags: line = '%s%s%s flags=(%s) {%s\n' % (space, hat_keyword, hat, newflags, comment) else: line = '%s%s%s {%s\n' % (space, hat_keyword, hat, comment) f_out.write(line) os.rename(temp_file.name, prof_filename) if not found: if program is None: raise AppArmorBug("%(file)s doesn't contain a valid profile (syntax error?)" % {'file': prof_filename}) else: raise AppArmorBug("%(file)s doesn't contain a valid profile for %(profile)s (syntax error?)" % {'file': prof_filename, 'profile': program}) def profile_exists(program): """Returns True if profile exists, False otherwise""" # Check cache of profiles if existing_profiles.get(program, False): return True # Check the disk for profile prof_path = get_profile_filename(program) #print(prof_path) if os.path.isfile(prof_path): # Add to cache of profile existing_profiles[program] = prof_path return True return False def sync_profile(): user, passw = get_repo_user_pass() if not user or not passw: return None repo_profiles = [] changed_profiles = [] new_profiles = [] serialize_opts = hasher() status_ok, ret = fetch_profiles_by_user(cfg['repository']['url'], cfg['repository']['distro'], user) if not status_ok: if not ret: ret = 'UNKNOWN ERROR' aaui.UI_Important(_('WARNING: Error synchronizing profiles with the repository:\n%s\n') % ret) else: users_repo_profiles = ret serialize_opts['NO_FLAGS'] = True for prof in sorted(aa.keys()): if is_repo_profile([aa[prof][prof]]): repo_profiles.append(prof) if prof in created: p_local = serialize_profile(aa[prof], prof, serialize_opts) if not users_repo_profiles.get(prof, False): new_profiles.append(prof) new_profiles.append(p_local) new_profiles.append('') else: p_repo = users_repo_profiles[prof]['profile'] if p_local != p_repo: changed_profiles.append(prof) changed_profiles.append(p_local) changed_profiles.append(p_repo) if repo_profiles: for prof in repo_profiles: p_local = serialize_profile(aa[prof], prof, serialize_opts) if not users_repo_profiles.get(prof, False): new_profiles.append(prof) new_profiles.append(p_local) new_profiles.append('') else: p_repo = '' if aa[prof][prof]['repo']['user'] == user: p_repo = users_repo_profiles[prof]['profile'] else: status_ok, ret = fetch_profile_by_id(cfg['repository']['url'], aa[prof][prof]['repo']['id']) if status_ok: p_repo = ret['profile'] else: if not ret: ret = 'UNKNOWN ERROR' aaui.UI_Important(_('WARNING: Error synchronizing profiles with the repository\n%s') % ret) continue if p_repo != p_local: changed_profiles.append(prof) changed_profiles.append(p_local) changed_profiles.append(p_repo) if changed_profiles: submit_changed_profiles(changed_profiles) if new_profiles: submit_created_profiles(new_profiles) def fetch_profile_by_id(url, id): #To-Do return None, None def fetch_profiles_by_name(url, distro, user): #to-Do return None, None def fetch_profiles_by_user(url, distro, user): #to-Do return None, None def submit_created_profiles(new_profiles): #url = cfg['repository']['url'] if new_profiles: title = 'Submit newly created profiles to the repository' message = 'Would you like to upload newly created profiles?' console_select_and_upload_profiles(title, message, new_profiles) def submit_changed_profiles(changed_profiles): #url = cfg['repository']['url'] if changed_profiles: title = 'Submit changed profiles to the repository' message = 'The following profiles from the repository were changed.\nWould you like to upload your changes?' console_select_and_upload_profiles(title, message, changed_profiles) def upload_profile(url, user, passw, distro, p, profile_string, changelog): # To-Do return None, None def console_select_and_upload_profiles(title, message, profiles_up): url = cfg['repository']['url'] profs = profiles_up[:] q = aaui.PromptQuestion() q.title = title q.headers = ['Repository', url] q.explanation = message q.functions = ['CMD_UPLOAD_CHANGES', 'CMD_VIEW_CHANGES', 'CMD_ASK_LATER', 'CMD_ASK_NEVER', 'CMD_ABORT'] q.default = 'CMD_VIEW_CHANGES' q.options = [i[0] for i in profs] q.selected = 0 ans = '' while 'CMD_UPLOAD_CHANGES' not in ans and 'CMD_ASK_NEVER' not in ans and 'CMD_ASK_LATER' not in ans: ans, arg = q.promptUser() if ans == 'CMD_VIEW_CHANGES': aaui.UI_Changes(profs[arg][2], profs[arg][1]) if ans == 'CMD_NEVER_ASK': set_profiles_local_only([i[0] for i in profs]) elif ans == 'CMD_UPLOAD_CHANGES': changelog = aaui.UI_GetString(_('Changelog Entry: '), '') user, passw = get_repo_user_pass() if user and passw: for p_data in profs: prof = p_data[0] prof_string = p_data[1] status_ok, ret = upload_profile(url, user, passw, cfg['repository']['distro'], prof, prof_string, changelog) if status_ok: newprof = ret newid = newprof['id'] set_repo_info(aa[prof][prof], url, user, newid) write_profile_ui_feedback(prof) aaui.UI_Info('Uploaded %s to repository' % prof) else: if not ret: ret = 'UNKNOWN ERROR' aaui.UI_Important(_('WARNING: An error occurred while uploading the profile %(profile)s\n%(ret)s') % { 'profile': prof, 'ret': ret }) else: aaui.UI_Important(_('Repository Error\nRegistration or Signin was unsuccessful. User login\ninformation is required to upload profiles to the repository.\nThese changes could not be sent.')) def set_profiles_local_only(profs): for p in profs: aa[profs][profs]['repo']['neversubmit'] = True write_profile_ui_feedback(profs) def build_x_functions(default, options, exec_toggle): ret_list = [] fallback_toggle = False if exec_toggle: if 'i' in options: ret_list.append('CMD_ix') if 'p' in options: ret_list.append('CMD_pix') fallback_toggle = True if 'c' in options: ret_list.append('CMD_cix') fallback_toggle = True if 'n' in options: ret_list.append('CMD_nix') fallback_toggle = True if fallback_toggle: ret_list.append('CMD_EXEC_IX_OFF') if 'u' in options: ret_list.append('CMD_ux') else: if 'i' in options: ret_list.append('CMD_ix') if 'c' in options: ret_list.append('CMD_cx') fallback_toggle = True if 'p' in options: ret_list.append('CMD_px') fallback_toggle = True if 'n' in options: ret_list.append('CMD_nx') fallback_toggle = True if 'u' in options: ret_list.append('CMD_ux') if fallback_toggle: ret_list.append('CMD_EXEC_IX_ON') ret_list += ['CMD_DENY', 'CMD_ABORT', 'CMD_FINISHED'] return ret_list def handle_children(profile, hat, root): entries = root[:] pid = None p = None h = None prog = None aamode = None mode = None detail = None to_name = None uhat = None capability = None family = None sock_type = None protocol = None regex_nullcomplain = re.compile('^null(-complain)*-profile$') for entry in entries: if type(entry[0]) != str: handle_children(profile, hat, entry) else: typ = entry.pop(0) if typ == 'fork': # If type is fork then we (should) have pid, profile and hat pid, p, h = entry[:3] if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if hat: profile_changes[pid] = profile + '//' + hat else: profile_changes[pid] = profile elif typ == 'unknown_hat': # If hat is not known then we (should) have pid, profile, hat, mode and unknown hat in entry pid, p, h, aamode, uhat = entry[:5] if not regex_nullcomplain.search(p): profile = p if aa[profile].get(uhat, False): hat = uhat continue new_p = update_repo_profile(aa[profile][profile]) if new_p and UI_SelectUpdatedRepoProfile(profile, new_p) and aa[profile].get(uhat, False): hat = uhat continue default_hat = None for hatglob in cfg.options('defaulthat'): if re.search(hatglob, profile): default_hat = cfg['defaulthat'][hatglob] context = profile context = context + ' -> ^%s' % uhat ans = transitions.get(context, 'XXXINVALIDXXX') while ans not in ['CMD_ADDHAT', 'CMD_USEDEFAULT', 'CMD_DENY']: q = aaui.PromptQuestion() q.headers += [_('Profile'), profile] if default_hat: q.headers += [_('Default Hat'), default_hat] q.headers += [_('Requested Hat'), uhat] q.functions.append('CMD_ADDHAT') if default_hat: q.functions.append('CMD_USEDEFAULT') q.functions += ['CMD_DENY', 'CMD_ABORT', 'CMD_FINISHED'] q.default = 'CMD_DENY' if aamode == 'PERMITTING': q.default = 'CMD_ADDHAT' ans = q.promptUser()[0] if ans == 'CMD_FINISHED': save_profiles() return transitions[context] = ans if ans == 'CMD_ADDHAT': hat = uhat aa[profile][hat] = ProfileStorage(profile, hat, 'handle_children addhat') aa[profile][hat]['flags'] = aa[profile][profile]['flags'] changed[profile] = True elif ans == 'CMD_USEDEFAULT': hat = default_hat elif ans == 'CMD_DENY': # As unknown hat is denied no entry for it should be made return None elif typ == 'capability': # If capability then we (should) have pid, profile, hat, program, mode, capability pid, p, h, prog, aamode, capability = entry[:6] if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if not profile or not hat: continue prelog[aamode][profile][hat]['capability'][capability] = True elif typ == 'dbus': # If dbus then we (should) have pid, profile, hat, program, mode, access, bus, name, path, interface, member, peer_profile pid, p, h, prog, aamode, access, bus, path, name, interface, member, peer_profile = entry if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if not profile or not hat: continue prelog[aamode][profile][hat]['dbus'][access][bus][path][name][interface][member][peer_profile] = True elif typ == 'ptrace': # If ptrace then we (should) have pid, profile, hat, program, mode, access and peer pid, p, h, prog, aamode, access, peer = entry if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if not profile or not hat: continue prelog[aamode][profile][hat]['ptrace'][peer][access] = True elif typ == 'signal': # If signal then we (should) have pid, profile, hat, program, mode, access, signal and peer pid, p, h, prog, aamode, access, signal, peer = entry if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if not profile or not hat: continue prelog[aamode][profile][hat]['signal'][peer][access][signal] = True elif typ == 'path' or typ == 'exec': # If path or exec then we (should) have pid, profile, hat, program, mode, details and to_name pid, p, h, prog, aamode, mode, detail, to_name = entry[:8] if not mode: mode = set() if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if not profile or not hat or not detail: continue # Give Execute dialog if x access requested for something that's not a directory # For directories force an 'ix' Path dialog do_execute = False exec_target = detail if mode & str_to_mode('x'): if os.path.isdir(exec_target): raise AppArmorBug('exec permissions requested for directory %s. This should not happen - please open a bugreport!' % exec_target) elif typ != 'exec': raise AppArmorBug('exec permissions requested for %(exec_target)s, but mode is %(mode)s instead of exec. This should not happen - please open a bugreport!' % {'exec_target': exec_target, 'mode':mode}) else: do_execute = True domainchange = 'change' if mode and mode != str_to_mode('x'): # x is already handled in handle_children, so it must not become part of prelog path = detail if prelog[aamode][profile][hat]['path'].get(path, False): mode |= prelog[aamode][profile][hat]['path'][path] prelog[aamode][profile][hat]['path'][path] = mode if do_execute: if not aa[profile][hat]: continue # ignore log entries for non-existing profiles exec_event = FileRule(exec_target, None, FileRule.ANY_EXEC, FileRule.ALL, owner=False, log_event=True) if is_known_rule(aa[profile][hat], 'file', exec_event): continue p = update_repo_profile(aa[profile][profile]) if to_name: if UI_SelectUpdatedRepoProfile(profile, p) and is_known_rule(aa[profile][hat], 'file', exec_event): # we need an exec_event with target=to_name here continue else: if UI_SelectUpdatedRepoProfile(profile, p) and is_known_rule(aa[profile][hat], 'file', exec_event): # we need an exec_event with target=exec_target here continue context_new = profile if profile != hat: context_new = context_new + '^%s' % hat context_new = context_new + ' -> %s' % exec_target # nx is not used in profiles but in log files. # Log parsing methods will convert it to its profile form # nx is internally cx/px/cix/pix + to_name exec_mode = False file_perm = None if True: options = cfg['qualifiers'].get(exec_target, 'ipcnu') if to_name: fatal_error(_('%s has transition name but not transition mode') % entry) ### If profiled program executes itself only 'ix' option ##if exec_target == profile: ##options = 'i' # Don't allow hats to cx? options.replace('c', '') # Add deny to options options += 'd' # Define the default option default = None if 'p' in options and os.path.exists(get_profile_filename(exec_target)): default = 'CMD_px' sys.stdout.write(_('Target profile exists: %s\n') % get_profile_filename(exec_target)) elif 'i' in options: default = 'CMD_ix' elif 'c' in options: default = 'CMD_cx' elif 'n' in options: default = 'CMD_nx' else: default = 'DENY' # parent_uses_ld_xxx = check_for_LD_XXX(profile) sev_db.unload_variables() sev_db.load_variables(get_profile_filename(profile)) severity = sev_db.rank_path(exec_target, 'x') # Prompt portion starts q = aaui.PromptQuestion() q.headers += [_('Profile'), combine_name(profile, hat)] if prog and prog != 'HINT': q.headers += [_('Program'), prog] # to_name should not exist here since, transitioning is already handeled q.headers += [_('Execute'), exec_target] q.headers += [_('Severity'), severity] # prompt = '\n%s\n' % context_new # XXX exec_toggle = False q.functions += build_x_functions(default, options, exec_toggle) # ask user about the exec mode to use ans = '' while ans not in ['CMD_ix', 'CMD_px', 'CMD_cx', 'CMD_nx', 'CMD_pix', 'CMD_cix', 'CMD_nix', 'CMD_ux', 'CMD_DENY']: # add '(I)gnore'? (hotkey conflict with '(i)x'!) ans = q.promptUser()[0] if ans.startswith('CMD_EXEC_IX_'): exec_toggle = not exec_toggle q.functions = build_x_functions(default, options, exec_toggle) ans = '' continue if ans == 'CMD_FINISHED': save_profiles() return if ans == 'CMD_nx' or ans == 'CMD_nix': arg = exec_target ynans = 'n' if profile == hat: ynans = aaui.UI_YesNo(_('Are you specifying a transition to a local profile?'), 'n') if ynans == 'y': if ans == 'CMD_nx': ans = 'CMD_cx' else: ans = 'CMD_cix' else: if ans == 'CMD_nx': ans = 'CMD_px' else: ans = 'CMD_pix' to_name = aaui.UI_GetString(_('Enter profile name to transition to: '), arg) if ans == 'CMD_ix': exec_mode = 'ix' elif ans in ['CMD_px', 'CMD_cx', 'CMD_pix', 'CMD_cix']: exec_mode = ans.replace('CMD_', '') px_msg = _("Should AppArmor sanitise the environment when\nswitching profiles?\n\nSanitising environment is more secure,\nbut some applications depend on the presence\nof LD_PRELOAD or LD_LIBRARY_PATH.") if parent_uses_ld_xxx: px_msg = _("Should AppArmor sanitise the environment when\nswitching profiles?\n\nSanitising environment is more secure,\nbut this application appears to be using LD_PRELOAD\nor LD_LIBRARY_PATH and sanitising the environment\ncould cause functionality problems.") ynans = aaui.UI_YesNo(px_msg, 'y') if ynans == 'y': # Disable the unsafe mode exec_mode = exec_mode.capitalize() elif ans == 'CMD_ux': exec_mode = 'ux' ynans = aaui.UI_YesNo(_("Launching processes in an unconfined state is a very\ndangerous operation and can cause serious security holes.\n\nAre you absolutely certain you wish to remove all\nAppArmor protection when executing %s ?") % exec_target, 'n') if ynans == 'y': ynans = aaui.UI_YesNo(_("Should AppArmor sanitise the environment when\nrunning this program unconfined?\n\nNot sanitising the environment when unconfining\na program opens up significant security holes\nand should be avoided if at all possible."), 'y') if ynans == 'y': # Disable the unsafe mode exec_mode = exec_mode.capitalize() else: ans = 'INVALID' if exec_mode and 'i' in exec_mode: # For inherit we need mr file_perm = 'mr' else: if ans == 'CMD_DENY': aa[profile][hat]['file'].add(FileRule(exec_target, None, 'x', FileRule.ALL, owner=False, log_event=True, deny=True)) changed[profile] = True # Skip remaining events if they ask to deny exec if domainchange == 'change': return None if ans != 'CMD_DENY': if to_name: rule_to_name = to_name else: rule_to_name = FileRule.ALL aa[profile][hat]['file'].add(FileRule(exec_target, file_perm, exec_mode, rule_to_name, owner=False, log_event=True)) changed[profile] = True if 'i' in exec_mode: interpreter_path, abstraction = get_interpreter_and_abstraction(exec_target) if interpreter_path: aa[profile][hat]['file'].add(FileRule(exec_target, 'r', None, FileRule.ALL, owner=False)) aa[profile][hat]['file'].add(FileRule(interpreter_path, None, 'ix', FileRule.ALL, owner=False)) if abstraction: aa[profile][hat]['include'][abstraction] = True handle_binfmt(aa[profile][hat], interpreter_path) # Update tracking info based on kind of change if ans == 'CMD_ix': if hat: profile_changes[pid] = '%s//%s' % (profile, hat) else: profile_changes[pid] = '%s//' % profile elif re.search('^CMD_(px|nx|pix|nix)', ans): if to_name: exec_target = to_name if aamode == 'PERMITTING': if domainchange == 'change': profile = exec_target hat = exec_target profile_changes[pid] = '%s' % profile # Check profile exists for px if not os.path.exists(get_profile_filename(exec_target)): ynans = 'y' if 'i' in exec_mode: ynans = aaui.UI_YesNo(_('A profile for %s does not exist.\nDo you want to create one?') % exec_target, 'n') if ynans == 'y': helpers[exec_target] = 'enforce' if to_name: autodep('', exec_target) else: autodep(exec_target, '') reload_base(exec_target) elif ans.startswith('CMD_cx') or ans.startswith('CMD_cix'): if to_name: exec_target = to_name if aamode == 'PERMITTING': if domainchange == 'change': profile_changes[pid] = '%s//%s' % (profile, exec_target) if not aa[profile].get(exec_target, False): ynans = 'y' if 'i' in exec_mode: ynans = aaui.UI_YesNo(_('A profile for %s does not exist.\nDo you want to create one?') % exec_target, 'n') if ynans == 'y': hat = exec_target if not aa[profile].get(hat, False): stub_profile = create_new_profile(hat, True) aa[profile][hat] = stub_profile[hat][hat] aa[profile][hat]['profile'] = True if profile != hat: aa[profile][hat]['flags'] = aa[profile][profile]['flags'] aa[profile][hat]['flags'] = 'complain' file_name = aa[profile][profile]['filename'] filelist[file_name]['profiles'][profile][hat] = True elif ans.startswith('CMD_ux'): profile_changes[pid] = 'unconfined' if domainchange == 'change': return None elif typ == 'netdomain': # If netdomain we (should) have pid, profile, hat, program, mode, network family, socket type and protocol pid, p, h, prog, aamode, family, sock_type, protocol = entry[:8] if not regex_nullcomplain.search(p) and not regex_nullcomplain.search(h): profile = p hat = h if not hat or not profile: continue if family and sock_type: prelog[aamode][profile][hat]['netdomain'][family][sock_type] = True return None ##### Repo related functions def UI_SelectUpdatedRepoProfile(profile, p): # To-Do return False def UI_repo_signup(): # To-Do return None, None def UI_ask_to_enable_repo(): # To-Do pass def UI_ask_to_upload_profiles(): # To-Do pass def parse_repo_profile(fqdbin, repo_url, profile): # To-Do pass def set_repo_info(profile_data, repo_url, username, iden): # To-Do pass def is_repo_profile(profile_data): # To-Do pass def get_repo_user_pass(): # To-Do pass def get_preferred_user(repo_url): # To-Do pass def repo_is_enabled(): # To-Do return False def update_repo_profile(profile): # To-Do return None def order_globs(globs, original_path): """Returns the globs in sorted order, more specific behind""" # To-Do # ATM its lexicographic, should be done to allow better matches later globs = sorted(globs) # make sure the original path is always the last option if original_path in globs: globs.remove(original_path) globs.append(original_path) return globs def ask_the_questions(log_dict): for aamode in sorted(log_dict.keys()): # Describe the type of changes if aamode == 'PERMITTING': aaui.UI_Info(_('Complain-mode changes:')) elif aamode == 'REJECTING': aaui.UI_Info(_('Enforce-mode changes:')) elif aamode == 'merge': pass # aa-mergeprof else: raise AppArmorBug(_('Invalid mode found: %s') % aamode) for profile in sorted(log_dict[aamode].keys()): # Update the repo profiles p = update_repo_profile(aa[profile][profile]) if p: UI_SelectUpdatedRepoProfile(profile, p) sev_db.unload_variables() sev_db.load_variables(get_profile_filename(profile)) # Sorted list of hats with the profile name coming first hats = list(filter(lambda key: key != profile, sorted(log_dict[aamode][profile].keys()))) if log_dict[aamode][profile].get(profile, False): hats = [profile] + hats for hat in hats: if not aa[profile].get(hat, {}).get('file'): if aamode != 'merge': # Ignore log events for a non-existing profile or child profile. Such events can occour # after deleting a profile or hat manually, or when processing a foreign log. # (Checking for 'file' is a simplified way to check if it's a ProfileStorage.) debug_logger.debug("Ignoring events for non-existing profile %s" % combine_name(profile, hat)) continue ans = '' while ans not in ['CMD_ADDHAT', 'CMD_ADDSUBPROFILE', 'CMD_DENY']: q = aaui.PromptQuestion() q.headers += [_('Profile'), profile] if log_dict[aamode][profile][hat]['profile']: q.headers += [_('Requested Subprofile'), hat] q.functions.append('CMD_ADDSUBPROFILE') else: q.headers += [_('Requested Hat'), hat] q.functions.append('CMD_ADDHAT') q.functions += ['CMD_DENY', 'CMD_ABORT', 'CMD_FINISHED'] q.default = 'CMD_DENY' ans = q.promptUser()[0] if ans == 'CMD_FINISHED': return if ans == 'CMD_DENY': continue # don't ask about individual rules if the user doesn't want the additional subprofile/hat if log_dict[aamode][profile][hat]['profile']: aa[profile][hat] = ProfileStorage(profile, hat, 'mergeprof ask_the_questions() - missing subprofile') aa[profile][hat]['profile'] = True else: aa[profile][hat] = ProfileStorage(profile, hat, 'mergeprof ask_the_questions() - missing hat') aa[profile][hat]['profile'] = False #Add the includes from the other profile to the user profile done = False options = [] for inc in log_dict[aamode][profile][hat]['include'].keys(): if not inc in aa[profile][hat]['include'].keys(): if inc.startswith('/'): options.append('#include "%s"' %inc) else: options.append('#include <%s>' %inc) default_option = 1 q = aaui.PromptQuestion() q.options = options q.selected = default_option - 1 q.headers = [_('File includes'), _('Select the ones you wish to add')] q.functions = ['CMD_ALLOW', 'CMD_IGNORE_ENTRY', 'CMD_ABORT', 'CMD_FINISHED'] q.default = 'CMD_ALLOW' while not done and options: ans, selected = q.promptUser() if ans == 'CMD_IGNORE_ENTRY': done = True elif ans == 'CMD_ALLOW': selection = options[selected] inc = re_match_include(selection) deleted = apparmor.aa.delete_duplicates(aa[profile][hat], inc) aa[profile][hat]['include'][inc] = True options.pop(selected) aaui.UI_Info(_('Adding %s to the file.') % selection) if deleted: aaui.UI_Info(_('Deleted %s previous matching profile entries.') % deleted) elif ans == 'CMD_FINISHED': return # check for and ask about conflicting exec modes ask_conflict_mode(profile, hat, aa[profile][hat], log_dict[aamode][profile][hat]) for ruletype in ruletypes: for rule_obj in log_dict[aamode][profile][hat][ruletype].rules: if is_known_rule(aa[profile][hat], ruletype, rule_obj): continue default_option = 1 options = [] newincludes = match_includes(aa[profile][hat], ruletype, rule_obj) q = aaui.PromptQuestion() if newincludes: options += list(map(lambda inc: '#include <%s>' % inc, sorted(set(newincludes)))) if ruletype == 'file' and rule_obj.path: options += propose_file_rules(aa[profile][hat], rule_obj) else: options.append(rule_obj.get_clean()) done = False while not done: q.options = options q.selected = default_option - 1 q.headers = [_('Profile'), combine_name(profile, hat)] q.headers += rule_obj.logprof_header() # Load variables into sev_db? Not needed/used for capabilities and network rules. severity = rule_obj.severity(sev_db) if severity != sev_db.NOT_IMPLEMENTED: q.headers += [_('Severity'), severity] q.functions = available_buttons(rule_obj) # In complain mode: events default to allow # In enforce mode: events default to deny # XXX does this behaviour really make sense, except for "historical reasons"[tm]? q.default = 'CMD_DENY' if rule_obj.log_event == 'PERMITTING': q.default = 'CMD_ALLOW' ans, selected = q.promptUser() selection = options[selected] if ans == 'CMD_IGNORE_ENTRY': done = True break elif ans == 'CMD_FINISHED': return elif ans.startswith('CMD_AUDIT'): if ans == 'CMD_AUDIT_NEW': rule_obj.audit = True rule_obj.raw_rule = None else: rule_obj.audit = False rule_obj.raw_rule = None options = set_options_audit_mode(rule_obj, options) elif ans.startswith('CMD_USER_'): if ans == 'CMD_USER_ON': rule_obj.owner = True rule_obj.raw_rule = None else: rule_obj.owner = False rule_obj.raw_rule = None options = set_options_owner_mode(rule_obj, options) elif ans == 'CMD_ALLOW': done = True changed[profile] = True inc = re_match_include(selection) if inc: deleted = delete_duplicates(aa[profile][hat], inc) aa[profile][hat]['include'][inc] = True aaui.UI_Info(_('Adding %s to profile.') % selection) if deleted: aaui.UI_Info(_('Deleted %s previous matching profile entries.') % deleted) else: rule_obj = selection_to_rule_obj(rule_obj, selection) deleted = aa[profile][hat][ruletype].add(rule_obj, cleanup=True) aaui.UI_Info(_('Adding %s to profile.') % rule_obj.get_clean()) if deleted: aaui.UI_Info(_('Deleted %s previous matching profile entries.') % deleted) elif ans == 'CMD_DENY': if re_match_include(selection): aaui.UI_Important("Denying via an include file isn't supported by the AppArmor tools") else: done = True changed[profile] = True rule_obj = selection_to_rule_obj(rule_obj, selection) rule_obj.deny = True rule_obj.raw_rule = None # reset raw rule after manually modifying rule_obj deleted = aa[profile][hat][ruletype].add(rule_obj, cleanup=True) aaui.UI_Info(_('Adding %s to profile.') % rule_obj.get_clean()) if deleted: aaui.UI_Info(_('Deleted %s previous matching profile entries.') % deleted) elif ans == 'CMD_GLOB': if not re_match_include(selection): globbed_rule_obj = selection_to_rule_obj(rule_obj, selection) globbed_rule_obj.glob() options, default_option = add_to_options(options, globbed_rule_obj.get_raw()) elif ans == 'CMD_GLOBEXT': if not re_match_include(selection): globbed_rule_obj = selection_to_rule_obj(rule_obj, selection) globbed_rule_obj.glob_ext() options, default_option = add_to_options(options, globbed_rule_obj.get_raw()) elif ans == 'CMD_NEW': if not re_match_include(selection): edit_rule_obj = selection_to_rule_obj(rule_obj, selection) prompt, oldpath = edit_rule_obj.edit_header() newpath = aaui.UI_GetString(prompt, oldpath) if newpath: try: input_matches_path = rule_obj.validate_edit(newpath) # note that we check against the original rule_obj here, not edit_rule_obj (which might be based on a globbed path) except AppArmorException: aaui.UI_Important(_('The path you entered is invalid (not starting with / or a variable)!')) continue if not input_matches_path: ynprompt = _('The specified path does not match this log entry:\n\n Log Entry: %(path)s\n Entered Path: %(ans)s\nDo you really want to use this path?') % { 'path': oldpath, 'ans': newpath } key = aaui.UI_YesNo(ynprompt, 'n') if key == 'n': continue edit_rule_obj.store_edit(newpath) options, default_option = add_to_options(options, edit_rule_obj.get_raw()) user_globs[newpath] = AARE(newpath, True) else: done = False def selection_to_rule_obj(rule_obj, selection): rule_type = type(rule_obj) return rule_type.parse(selection) def set_options_audit_mode(rule_obj, options): '''change audit state in options (proposed rules) to audit state in rule_obj. #include options will be kept unchanged ''' return set_options_mode(rule_obj, options, 'audit') def set_options_owner_mode(rule_obj, options): '''change owner state in options (proposed rules) to owner state in rule_obj. #include options will be kept unchanged ''' return set_options_mode(rule_obj, options, 'owner') def set_options_mode(rule_obj, options, what): ''' helper function for set_options_audit_mode() and set_options_owner_mode''' new_options = [] for rule in options: if re_match_include(rule): new_options.append(rule) else: parsed_rule = selection_to_rule_obj(rule_obj, rule) if what == 'audit': parsed_rule.audit = rule_obj.audit elif what == 'owner': parsed_rule.owner = rule_obj.owner else: raise AppArmorBug('Unknown "what" value given to set_options_mode: %s' % what) parsed_rule.raw_rule = None new_options.append(parsed_rule.get_raw()) return new_options def available_buttons(rule_obj): buttons = [] if not rule_obj.deny: buttons += ['CMD_ALLOW'] buttons += ['CMD_DENY', 'CMD_IGNORE_ENTRY'] if rule_obj.can_glob: buttons += ['CMD_GLOB'] if rule_obj.can_glob_ext: buttons += ['CMD_GLOBEXT'] if rule_obj.can_edit: buttons += ['CMD_NEW'] if rule_obj.audit: buttons += ['CMD_AUDIT_OFF'] else: buttons += ['CMD_AUDIT_NEW'] if rule_obj.can_owner: if rule_obj.owner: buttons += ['CMD_USER_OFF'] else: buttons += ['CMD_USER_ON'] buttons += ['CMD_ABORT', 'CMD_FINISHED'] return buttons def add_to_options(options, newpath): if newpath not in options: options.append(newpath) default_option = options.index(newpath) + 1 return (options, default_option) def delete_duplicates(profile, incname): deleted = 0 # Allow rules covered by denied rules shouldn't be deleted # only a subset allow rules may actually be denied if include.get(incname, False): for rule_type in ruletypes: deleted += profile[rule_type].delete_duplicates(include[incname][incname][rule_type]) elif filelist.get(incname, False): for rule_type in ruletypes: deleted += profile[rule_type].delete_duplicates(filelist[incname][incname][rule_type]) return deleted def ask_conflict_mode(profile, hat, old_profile, merge_profile): '''ask user about conflicting exec rules''' for oldrule in old_profile['file'].rules: conflictingrules = merge_profile['file'].get_exec_conflict_rules(oldrule) if conflictingrules.rules: q = aaui.PromptQuestion() q.headers = [_('Path'), oldrule.path.regex] q.headers += [_('Select the appropriate mode'), ''] options = [] options.append(oldrule.get_clean()) for rule in conflictingrules.rules: options.append(rule.get_clean()) q.options = options q.functions = ['CMD_ALLOW', 'CMD_ABORT'] done = False while not done: ans, selected = q.promptUser() if ans == 'CMD_ALLOW': if selected == 0: pass # just keep the existing rule elif selected > 0: # replace existing rule with merged one old_profile['file'].delete(oldrule) old_profile['file'].add(conflictingrules.rules[selected - 1]) else: raise AppArmorException(_('Unknown selection')) for rule in conflictingrules.rules: merge_profile['file'].delete(rule) # make sure aa-mergeprof doesn't ask to add conflicting rules later done = True def get_include_path(incname): if incname.startswith('/'): return incname return profile_dir + '/' + incname def match_includes(profile, rule_type, rule_obj): newincludes = [] for incname in include.keys(): # XXX type check should go away once we init all profiles correctly if valid_include(profile, incname) and include[incname][incname].get(rule_type, False) and include[incname][incname][rule_type].is_covered(rule_obj): newincludes.append(incname) return newincludes def valid_include(profile, incname): if profile and profile['include'].get(incname, False): return False if cfg['settings']['custom_includes']: for incm in cfg['settings']['custom_includes'].split(): if incm == incname: return True if incname.startswith('abstractions/') and os.path.isfile(profile_dir + '/' + incname): return True elif incname.startswith('/') and os.path.isfile(incname): return True return False def set_logfile(filename): ''' set logfile to a) the specified filename or b) if not given, the first existing logfile from logprof.conf''' global logfile if filename: logfile = filename else: logfile = conf.find_first_file(cfg['settings']['logfiles']) or '/var/log/syslog' if not os.path.exists(logfile): if filename: raise AppArmorException(_('The logfile %s does not exist. Please check the path') % logfile) else: raise AppArmorException('Can\'t find system log "%s".' % (logfile)) elif os.path.isdir(logfile): raise AppArmorException(_('%s is a directory. Please specify a file as logfile') % logfile) def do_logprof_pass(logmark='', passno=0, log_pid=log_pid): # set up variables for this pass # transitions = hasher() global existing_profiles global sev_db # aa = hasher() # profile_changes = hasher() # prelog = hasher() # changed = dict() # filelist = hasher() aaui.UI_Info(_('Reading log entries from %s.') % logfile) if not passno: aaui.UI_Info(_('Updating AppArmor profiles in %s.') % profile_dir) read_profiles() if not sev_db: sev_db = apparmor.severity.Severity(CONFDIR + '/severity.db', _('unknown')) #print(pid) #print(existing_profiles) ##if not repo_cf and cfg['repostory']['url']: ## repo_cfg = read_config('repository.conf') ## if not repo_cfg['repository'].get('enabled', False) or repo_cfg['repository]['enabled'] not in ['yes', 'no']: ## UI_ask_to_enable_repo() log_reader = apparmor.logparser.ReadLog(log_pid, logfile, existing_profiles, profile_dir) log = log_reader.read_log(logmark) #read_log(logmark) for root in log: handle_children('', '', root) #for root in range(len(log)): #log[root] = handle_children('', '', log[root]) #print(log) for pid in sorted(profile_changes.keys()): set_process(pid, profile_changes[pid]) log_dict = collapse_log() ask_the_questions(log_dict) finishing = False # Check for finished save_profiles() ##if not repo_cfg['repository'].get('upload', False) or repo['repository']['upload'] == 'later': ## UI_ask_to_upload_profiles() ##if repo_enabled(): ## if repo_cgf['repository']['upload'] == 'yes': ## sync_profiles() ## created = [] # If user selects 'Finish' then we want to exit logprof if finishing: return 'FINISHED' else: return 'NORMAL' def save_profiles(): # Ensure the changed profiles are actual active profiles for prof_name in changed.keys(): if not is_active_profile(prof_name): print("*** save_profiles(): removing %s" % prof_name) print('*** This should not happen. Please open a bugreport!') changed.pop(prof_name) changed_list = sorted(changed.keys()) if changed_list: q = aaui.PromptQuestion() q.title = 'Changed Local Profiles' q.explanation = _('The following local profiles were changed. Would you like to save them?') q.functions = ['CMD_SAVE_CHANGES', 'CMD_SAVE_SELECTED', 'CMD_VIEW_CHANGES', 'CMD_VIEW_CHANGES_CLEAN', 'CMD_ABORT'] q.default = 'CMD_VIEW_CHANGES' q.selected = 0 ans = '' arg = None while ans != 'CMD_SAVE_CHANGES': if not changed: return options = sorted(changed.keys()) q.options = options ans, arg = q.promptUser() q.selected = arg # remember selection which = options[arg] if ans == 'CMD_SAVE_SELECTED': write_profile_ui_feedback(which) reload_base(which) q.selected = 0 # saving the selected profile removes it from the list, therefore reset selection elif ans == 'CMD_VIEW_CHANGES': oldprofile = None if aa[which][which].get('filename', False): oldprofile = aa[which][which]['filename'] else: oldprofile = get_profile_filename(which) try: newprofile = serialize_profile_from_old_profile(aa[which], which, '') except AttributeError: # see https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1528139 newprofile = "###\n###\n### Internal error while generating diff, please use '%s' instead\n###\n###\n" % _('View Changes b/w (C)lean profiles') aaui.UI_Changes(oldprofile, newprofile, comments=True) elif ans == 'CMD_VIEW_CHANGES_CLEAN': oldprofile = serialize_profile(original_aa[which], which, '') newprofile = serialize_profile(aa[which], which, '') aaui.UI_Changes(oldprofile, newprofile) for profile_name in sorted(changed.keys()): write_profile_ui_feedback(profile_name) reload_base(profile_name) def get_pager(): return 'less' def set_process(pid, profile): # If process not running don't do anything if not os.path.exists('/proc/%s/attr/current' % pid): return None process = None try: process = open_file_read('/proc/%s/attr/current' % pid) except IOError: return None current = process.readline().strip() process.close() if not re.search('^null(-complain)*-profile$', current): return None stats = None try: stats = open_file_read('/proc/%s/stat' % pid) except IOError: return None stat = stats.readline().strip() stats.close() match = re.search('^\d+ \((\S+)\) ', stat) if not match: return None try: process = open_file_write('/proc/%s/attr/current' % pid) except IOError: return None process.write('setprofile %s' % profile) process.close() def collapse_log(): log_dict = hasher() for aamode in prelog.keys(): for profile in prelog[aamode].keys(): for hat in prelog[aamode][profile].keys(): log_dict[aamode][profile][hat] = ProfileStorage(profile, hat, 'collapse_log()') for path in prelog[aamode][profile][hat]['path'].keys(): mode = prelog[aamode][profile][hat]['path'][path] user, other = split_mode(mode) # logparser.py doesn't preserve 'owner' information, see https://bugs.launchpad.net/apparmor/+bug/1538340 # XXX re-check this code after fixing this bug if other: owner = False mode = other else: owner = True mode = user # python3 aa-logprof -f <(echo '[55826.822365] audit: type=1400 audit(1454355221.096:85479): apparmor="ALLOWED" operation="file_receive" profile="/usr/sbin/smbd" name="/foo.png" pid=28185 comm="smbd" requested_mask="w" denied_mask="w" fsuid=100 ouid=100') # happens via log_str_to_mode() called in logparser.py parse_event_for_tree() # XXX fix this in the log parsing! if 'a' in mode and 'w' in mode: mode.remove('a') file_event = FileRule(path, mode, None, FileRule.ALL, owner=owner, log_event=True) if not is_known_rule(aa[profile][hat], 'file', file_event): log_dict[aamode][profile][hat]['file'].add(file_event) for cap in prelog[aamode][profile][hat]['capability'].keys(): cap_event = CapabilityRule(cap, log_event=True) if not is_known_rule(aa[profile][hat], 'capability', cap_event): log_dict[aamode][profile][hat]['capability'].add(cap_event) dbus = prelog[aamode][profile][hat]['dbus'] for access in dbus: for bus in dbus[access]: for path in dbus[access][bus]: for name in dbus[access][bus][path]: for interface in dbus[access][bus][path][name]: for member in dbus[access][bus][path][name][interface]: for peer_profile in dbus[access][bus][path][name][interface][member]: # Depending on the access type, not all parameters are allowed. # Ignore them, even if some of them appear in the log. # Also, the log doesn't provide a peer name, therefore always use ALL. if access in ['send', 'receive']: dbus_event = DbusRule(access, bus, path, DbusRule.ALL, interface, member, DbusRule.ALL, peer_profile, log_event=True) elif access == 'bind': dbus_event = DbusRule(access, bus, DbusRule.ALL, name, DbusRule.ALL, DbusRule.ALL, DbusRule.ALL, DbusRule.ALL, log_event=True) elif access == 'eavesdrop': dbus_event = DbusRule(access, bus, DbusRule.ALL, DbusRule.ALL, DbusRule.ALL, DbusRule.ALL, DbusRule.ALL, DbusRule.ALL, log_event=True) else: raise AppArmorBug('unexpected dbus access: %s') log_dict[aamode][profile][hat]['dbus'].add(dbus_event) nd = prelog[aamode][profile][hat]['netdomain'] for family in nd.keys(): for sock_type in nd[family].keys(): net_event = NetworkRule(family, sock_type, log_event=True) if not is_known_rule(aa[profile][hat], 'network', net_event): log_dict[aamode][profile][hat]['network'].add(net_event) ptrace = prelog[aamode][profile][hat]['ptrace'] for peer in ptrace.keys(): for access in ptrace[peer].keys(): ptrace_event = PtraceRule(access, peer, log_event=True) if not is_known_rule(aa[profile][hat], 'ptrace', ptrace_event): log_dict[aamode][profile][hat]['ptrace'].add(ptrace_event) sig = prelog[aamode][profile][hat]['signal'] for peer in sig.keys(): for access in sig[peer].keys(): for signal in sig[peer][access].keys(): signal_event = SignalRule(access, signal, peer, log_event=True) if not is_known_rule(aa[profile][hat], 'signal', signal_event): log_dict[aamode][profile][hat]['signal'].add(signal_event) return log_dict def is_skippable_file(path): """Returns True if filename matches something to be skipped (rpm or dpkg backup files, hidden files etc.) The list of skippable files needs to be synced with apparmor initscript and libapparmor _aa_is_blacklisted() path: filename (with or without directory)""" basename = os.path.basename(path) if not basename or basename[0] == '.' or basename == 'README': return True skippable_suffix = ('.dpkg-new', '.dpkg-old', '.dpkg-dist', '.dpkg-bak', '.rpmnew', '.rpmsave', '.orig', '.rej', '~') if basename.endswith(skippable_suffix): return True return False def is_skippable_dir(path): if re.search('^(.*/)?(disable|cache|force-complain|lxc)/?$', path): return True return False def read_profiles(): # we'll read all profiles from disk, so reset the storage first (autodep() might have created/stored # a profile already, which would cause a 'Conflicting profile' error in attach_profile_data()) global aa, original_aa aa = hasher() original_aa = hasher() try: os.listdir(profile_dir) except: fatal_error(_("Can't read AppArmor profiles in %s") % profile_dir) for file in os.listdir(profile_dir): if os.path.isfile(profile_dir + '/' + file): if is_skippable_file(file): continue else: read_profile(profile_dir + '/' + file, True) def read_inactive_profiles(): if hasattr(read_inactive_profiles, 'already_read'): # each autodep() run calls read_inactive_profiles, but that's a) superfluous and b) triggers a conflict because the inactive profiles are already loaded # therefore don't do anything if the inactive profiles were already loaded return read_inactive_profiles.already_read = True if not os.path.exists(extra_profile_dir): return None try: os.listdir(profile_dir) except: fatal_error(_("Can't read AppArmor profiles in %s") % extra_profile_dir) for file in os.listdir(extra_profile_dir): if os.path.isfile(extra_profile_dir + '/' + file): if is_skippable_file(file): continue else: read_profile(extra_profile_dir + '/' + file, False) def read_profile(file, active_profile): data = None try: with open_file_read(file) as f_in: data = f_in.readlines() except IOError: debug_logger.debug("read_profile: can't read %s - skipping" % file) return None profile_data = parse_profile_data(data, file, 0) if profile_data and active_profile: attach_profile_data(aa, profile_data) attach_profile_data(original_aa, profile_data) elif profile_data: attach_profile_data(extras, profile_data) def attach_profile_data(profiles, profile_data): # Make deep copy of data to avoid changes to # arising due to mutables for p in profile_data.keys(): if profiles.get(p, False): for hat in profile_data[p].keys(): if profiles[p].get(hat, False): raise AppArmorException(_("Conflicting profiles for %s defined in two files:\n- %s\n- %s") % (combine_name(p, hat), profiles[p][hat]['filename'], profile_data[p][hat]['filename'])) profiles[p] = deepcopy(profile_data[p]) def parse_profile_start(line, file, lineno, profile, hat): matches = parse_profile_start_line(line, file) if profile: # we are inside a profile, so we expect a child profile if not matches['profile_keyword']: raise AppArmorException(_('%(profile)s profile in %(file)s contains syntax errors in line %(line)s: missing "profile" keyword.') % { 'profile': profile, 'file': file, 'line': lineno + 1 }) if profile != hat: # nesting limit reached - a child profile can't contain another child profile raise AppArmorException(_('%(profile)s profile in %(file)s contains syntax errors in line %(line)s: a child profile inside another child profile is not allowed.') % { 'profile': profile, 'file': file, 'line': lineno + 1 }) hat = matches['profile'] in_contained_hat = True pps_set_profile = True pps_set_hat_external = False else: # stand-alone profile profile = matches['profile'] if len(profile.split('//')) >= 2: profile, hat = profile.split('//')[:2] pps_set_hat_external = True else: hat = profile pps_set_hat_external = False in_contained_hat = False pps_set_profile = False attachment = matches['attachment'] flags = matches['flags'] return (profile, hat, attachment, flags, in_contained_hat, pps_set_profile, pps_set_hat_external) def parse_profile_data(data, file, do_include): profile_data = hasher() profile = None hat = None in_contained_hat = None repo_data = None parsed_profiles = [] initial_comment = '' lastline = None if do_include: profile = file hat = file profile_data[profile][hat] = ProfileStorage(profile, hat, 'parse_profile_data() do_include') profile_data[profile][hat]['filename'] = file for lineno, line in enumerate(data): line = line.strip() if not line: continue # we're dealing with a multiline statement if lastline: line = '%s %s' % (lastline, line) lastline = None # Starting line of a profile if RE_PROFILE_START.search(line): (profile, hat, attachment, flags, in_contained_hat, pps_set_profile, pps_set_hat_external) = parse_profile_start(line, file, lineno, profile, hat) if profile_data[profile].get(hat, False): raise AppArmorException('Profile %(profile)s defined twice in %(file)s, last found in line %(line)s' % { 'file': file, 'line': lineno + 1, 'profile': combine_name(profile, hat) }) profile_data[profile][hat] = ProfileStorage(profile, hat, 'parse_profile_data() profile_start') if attachment: profile_data[profile][hat]['attachment'] = attachment if pps_set_profile: profile_data[profile][hat]['profile'] = True if pps_set_hat_external: profile_data[profile][hat]['external'] = True # Profile stored existing_profiles[profile] = file # save profile name and filename profile_data[profile][hat]['name'] = profile profile_data[profile][hat]['filename'] = file filelist[file]['profiles'][profile][hat] = True profile_data[profile][hat]['flags'] = flags # Save the initial comment if initial_comment: profile_data[profile][hat]['initial_comment'] = initial_comment initial_comment = '' if repo_data: profile_data[profile][profile]['repo']['url'] = repo_data['url'] profile_data[profile][profile]['repo']['user'] = repo_data['user'] elif RE_PROFILE_END.search(line): # If profile ends and we're not in one if not profile: raise AppArmorException(_('Syntax Error: Unexpected End of Profile reached in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) if in_contained_hat: hat = profile in_contained_hat = False else: parsed_profiles.append(profile) profile = None initial_comment = '' elif CapabilityRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected capability entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['capability'].add(CapabilityRule.parse(line)) elif RE_PROFILE_LINK.search(line): matches = RE_PROFILE_LINK.search(line).groups() if not profile: raise AppArmorException(_('Syntax Error: Unexpected link entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) audit = False if matches[0]: audit = True allow = 'allow' if matches[1] and matches[1].strip() == 'deny': allow = 'deny' subset = matches[3] link = strip_quotes(matches[6]) value = strip_quotes(matches[7]) profile_data[profile][hat][allow]['link'][link]['to'] = value profile_data[profile][hat][allow]['link'][link]['mode'] = profile_data[profile][hat][allow]['link'][link].get('mode', set()) | apparmor.aamode.AA_MAY_LINK if subset: profile_data[profile][hat][allow]['link'][link]['mode'] |= apparmor.aamode.AA_LINK_SUBSET if audit: profile_data[profile][hat][allow]['link'][link]['audit'] = profile_data[profile][hat][allow]['link'][link].get('audit', set()) | apparmor.aamode.AA_LINK_SUBSET else: profile_data[profile][hat][allow]['link'][link]['audit'] = set() elif ChangeProfileRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected change profile entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['change_profile'].add(ChangeProfileRule.parse(line)) elif RE_PROFILE_ALIAS.search(line): matches = RE_PROFILE_ALIAS.search(line).groups() from_name = strip_quotes(matches[0]) to_name = strip_quotes(matches[1]) if profile: profile_data[profile][hat]['alias'][from_name] = to_name else: if not filelist.get(file, False): filelist[file] = hasher() filelist[file]['alias'][from_name] = to_name elif RlimitRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected rlimit entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['rlimit'].add(RlimitRule.parse(line)) elif RE_PROFILE_BOOLEAN.search(line): matches = RE_PROFILE_BOOLEAN.search(line).groups() if profile and not do_include: raise AppArmorException(_('Syntax Error: Unexpected boolean definition found inside profile in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) bool_var = matches[0] value = matches[1] profile_data[profile][hat]['lvar'][bool_var] = value elif RE_PROFILE_VARIABLE.search(line): # variable additions += and = matches = RE_PROFILE_VARIABLE.search(line).groups() list_var = strip_quotes(matches[0]) var_operation = matches[1] value = matches[2] if profile: if not profile_data[profile][hat].get('lvar', False): profile_data[profile][hat]['lvar'][list_var] = [] store_list_var(profile_data[profile]['lvar'], list_var, value, var_operation, file) else: if not filelist[file].get('lvar', False): filelist[file]['lvar'][list_var] = [] store_list_var(filelist[file]['lvar'], list_var, value, var_operation, file) elif RE_PROFILE_CONDITIONAL.search(line): # Conditional Boolean pass elif RE_PROFILE_CONDITIONAL_VARIABLE.search(line): # Conditional Variable defines pass elif RE_PROFILE_CONDITIONAL_BOOLEAN.search(line): # Conditional Boolean defined pass elif re_match_include(line): # Include files include_name = re_match_include(line) if include_name.startswith('local/'): profile_data[profile][hat]['localinclude'][include_name] = True if profile: profile_data[profile][hat]['include'][include_name] = True else: if not filelist.get(file): filelist[file] = hasher() filelist[file]['include'][include_name] = True # If include is a directory if os.path.isdir(get_include_path(include_name)): for file_name in include_dir_filelist(profile_dir, include_name): if not include.get(file_name, False): load_include(file_name) else: if not include.get(include_name, False): load_include(include_name) elif NetworkRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected network entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['network'].add(NetworkRule.parse(line)) elif DbusRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected dbus entry found in file: %(file)s line: %(line)s') % {'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['dbus'].add(DbusRule.parse(line)) elif RE_PROFILE_MOUNT.search(line): matches = RE_PROFILE_MOUNT.search(line).groups() if not profile: raise AppArmorException(_('Syntax Error: Unexpected mount entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) audit = False if matches[0]: audit = True allow = 'allow' if matches[1] and matches[1].strip() == 'deny': allow = 'deny' mount = matches[2] mount_rule = parse_mount_rule(mount) mount_rule.audit = audit mount_rule.deny = (allow == 'deny') mount_rules = profile_data[profile][hat][allow].get('mount', list()) mount_rules.append(mount_rule) profile_data[profile][hat][allow]['mount'] = mount_rules elif SignalRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected signal entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['signal'].add(SignalRule.parse(line)) elif PtraceRule.match(line): if not profile: raise AppArmorException(_('Syntax Error: Unexpected ptrace entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['ptrace'].add(PtraceRule.parse(line)) elif RE_PROFILE_PIVOT_ROOT.search(line): matches = RE_PROFILE_PIVOT_ROOT.search(line).groups() if not profile: raise AppArmorException(_('Syntax Error: Unexpected pivot_root entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) audit = False if matches[0]: audit = True allow = 'allow' if matches[1] and matches[1].strip() == 'deny': allow = 'deny' pivot_root = matches[2].strip() pivot_root_rule = parse_pivot_root_rule(pivot_root) pivot_root_rule.audit = audit pivot_root_rule.deny = (allow == 'deny') pivot_root_rules = profile_data[profile][hat][allow].get('pivot_root', list()) pivot_root_rules.append(pivot_root_rule) profile_data[profile][hat][allow]['pivot_root'] = pivot_root_rules elif RE_PROFILE_UNIX.search(line): matches = RE_PROFILE_UNIX.search(line).groups() if not profile: raise AppArmorException(_('Syntax Error: Unexpected unix entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) audit = False if matches[0]: audit = True allow = 'allow' if matches[1] and matches[1].strip() == 'deny': allow = 'deny' unix = matches[2].strip() unix_rule = parse_unix_rule(unix) unix_rule.audit = audit unix_rule.deny = (allow == 'deny') unix_rules = profile_data[profile][hat][allow].get('unix', list()) unix_rules.append(unix_rule) profile_data[profile][hat][allow]['unix'] = unix_rules elif RE_PROFILE_CHANGE_HAT.search(line): matches = RE_PROFILE_CHANGE_HAT.search(line).groups() if not profile: raise AppArmorException(_('Syntax Error: Unexpected change hat declaration found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) aaui.UI_Important(_('Ignoring no longer supported change hat declaration "^%(hat)s," found in file: %(file)s line: %(line)s') % { 'hat': matches[0], 'file': file, 'line': lineno + 1 }) elif RE_PROFILE_HAT_DEF.search(line): # An embedded hat syntax definition starts matches = RE_PROFILE_HAT_DEF.search(line) if not profile: raise AppArmorException(_('Syntax Error: Unexpected hat definition found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) in_contained_hat = True hat = matches.group('hat') hat = strip_quotes(hat) # if hat is already known, the filelist check some lines below will error out. # nevertheless, just to be sure, don't overwrite existing profile_data. if not profile_data[profile].get(hat, False): profile_data[profile][hat] = ProfileStorage(profile, hat, 'parse_profile_data() hat_def') profile_data[profile][hat]['filename'] = file flags = matches.group('flags') profile_data[profile][hat]['flags'] = flags if initial_comment: profile_data[profile][hat]['initial_comment'] = initial_comment initial_comment = '' if filelist[file]['profiles'][profile].get(hat, False) and not do_include: raise AppArmorException(_('Error: Multiple definitions for hat %(hat)s in profile %(profile)s.') % { 'hat': hat, 'profile': profile }) filelist[file]['profiles'][profile][hat] = True elif line[0] == '#': # Handle initial comments if not profile: if line.startswith('# Last Modified:'): continue elif line.startswith('# REPOSITORY:'): # TODO: allow any number of spaces/tabs parts = line.split() if len(parts) == 3 and parts[2] == 'NEVERSUBMIT': repo_data = {'neversubmit': True} elif len(parts) == 5: repo_data = {'url': parts[2], 'user': parts[3], 'id': parts[4]} else: aaui.UI_Important(_('Warning: invalid "REPOSITORY:" line in %s, ignoring.') % file) initial_comment = initial_comment + line + '\n' else: initial_comment = initial_comment + line + '\n' elif FileRule.match(line): # leading permissions could look like a keyword, therefore handle file rules after everything else if not profile: raise AppArmorException(_('Syntax Error: Unexpected path entry found in file: %(file)s line: %(line)s') % { 'file': file, 'line': lineno + 1 }) profile_data[profile][hat]['file'].add(FileRule.parse(line)) elif not RE_RULE_HAS_COMMA.search(line): # Bah, line continues on to the next line if RE_HAS_COMMENT_SPLIT.search(line): # filter trailing comments lastline = RE_HAS_COMMENT_SPLIT.search(line).group('not_comment') else: lastline = line else: raise AppArmorException(_('Syntax Error: Unknown line found in file %(file)s line %(lineno)s:\n %(line)s') % { 'file': file, 'lineno': lineno + 1, 'line': line }) # Below is not required I'd say if not do_include: for hatglob in cfg['required_hats'].keys(): for parsed_prof in sorted(parsed_profiles): if re.search(hatglob, parsed_prof): for hat in cfg['required_hats'][hatglob].split(): if not profile_data[parsed_prof].get(hat, False): profile_data[parsed_prof][hat] = ProfileStorage(parsed_prof, hat, 'parse_profile_data() required_hats') # End of file reached but we're stuck in a profile if profile and not do_include: raise AppArmorException(_("Syntax Error: Missing '}' or ','. Reached end of file %(file)s while inside profile %(profile)s") % { 'file': file, 'profile': profile }) return profile_data def parse_mount_rule(line): # XXX Do real parsing here return aarules.Raw_Mount_Rule(line) def parse_pivot_root_rule(line): # XXX Do real parsing here return aarules.Raw_Pivot_Root_Rule(line) def parse_unix_rule(line): # XXX Do real parsing here return aarules.Raw_Unix_Rule(line) def separate_vars(vs): """Returns a list of all the values for a variable""" data = set() vs = vs.strip() RE_VARS = re.compile('^(("[^"]*")|([^"\s]+))\s*(.*)$') while RE_VARS.search(vs): matches = RE_VARS.search(vs).groups() data.add(strip_quotes(matches[0])) vs = matches[3].strip() if vs: raise AppArmorException('Variable assignments contains invalid parts (unbalanced quotes?): %s' % vs) return data def is_active_profile(pname): if aa.get(pname, False): return True else: return False def store_list_var(var, list_var, value, var_operation, filename): """Store(add new variable or add values to variable) the variables encountered in the given list_var - the 'var' parameter will be modified - 'list_var' is the variable name, for example '@{foo}' """ vlist = separate_vars(value) if var_operation == '=': if not var.get(list_var, False): var[list_var] = set(vlist) else: raise AppArmorException(_('Redefining existing variable %(variable)s: %(value)s in %(file)s') % { 'variable': list_var, 'value': value, 'file': filename }) elif var_operation == '+=': if var.get(list_var, False): var[list_var] |= vlist else: raise AppArmorException(_('Values added to a non-existing variable %(variable)s: %(value)s in %(file)s') % { 'variable': list_var, 'value': value, 'file': filename }) else: raise AppArmorException(_('Unknown variable operation %(operation)s for variable %(variable)s in %(file)s') % { 'operation': var_operation, 'variable': list_var, 'file': filename }) def write_header(prof_data, depth, name, embedded_hat, write_flags): pre = ' ' * int(depth * 2) data = [] unquoted_name = name name = quote_if_needed(name) attachment = '' if prof_data['attachment']: attachment = ' %s' % quote_if_needed(prof_data['attachment']) comment = '' if prof_data['header_comment']: comment = ' %s' % prof_data['header_comment'] if (not embedded_hat and re.search('^[^/]', unquoted_name)) or (embedded_hat and re.search('^[^^]', unquoted_name)) or prof_data['attachment'] or prof_data['profile_keyword']: name = 'profile %s%s' % (name, attachment) flags = '' if write_flags and prof_data['flags']: flags = ' flags=(%s)' % prof_data['flags'] data.append('%s%s%s {%s' % (pre, name, flags, comment)) return data def write_single(prof_data, depth, allow, name, prefix, tail): pre = ' ' * depth data = [] ref, allow = set_ref_allow(prof_data, allow) if ref.get(name, False): for key in sorted(ref[name].keys()): if name == 'include': if key.startswith('/'): qkey = '"%s"' % key else: qkey = '<%s>' % quote_if_needed(key) else: qkey = quote_if_needed(key) data.append('%s%s%s%s%s' % (pre, allow, prefix, qkey, tail)) if ref[name].keys(): data.append('') return data def set_allow_str(allow): if allow == 'deny': return 'deny ' elif allow == 'allow': return '' elif allow == '': return '' else: raise AppArmorException(_("Invalid allow string: %(allow)s")) def set_ref_allow(prof_data, allow): if allow: return prof_data[allow], set_allow_str(allow) else: return prof_data, '' def write_pair(prof_data, depth, allow, name, prefix, sep, tail, fn): pre = ' ' * depth data = [] ref, allow = set_ref_allow(prof_data, allow) if ref.get(name, False): for key in sorted(ref[name].keys()): value = fn(ref[name][key]) # eval('%s(%s)' % (fn, ref[name][key])) data.append('%s%s%s%s%s%s' % (pre, allow, prefix, key, sep, value)) if ref[name].keys(): data.append('') return data def write_includes(prof_data, depth): return write_single(prof_data, depth, '', 'include', '#include ', '') def write_change_profile(prof_data, depth): data = [] if prof_data.get('change_profile', False): data = prof_data['change_profile'].get_clean(depth) return data def write_alias(prof_data, depth): return write_pair(prof_data, depth, '', 'alias', 'alias ', ' -> ', ',', quote_if_needed) def write_rlimits(prof_data, depth): data = [] if prof_data.get('rlimit', False): data = prof_data['rlimit'].get_clean(depth) return data def var_transform(ref): data = [] for value in ref: if not value: value = '""' data.append(quote_if_needed(value)) return ' '.join(data) def write_list_vars(prof_data, depth): return write_pair(prof_data, depth, '', 'lvar', '', ' = ', '', var_transform) def write_capabilities(prof_data, depth): data = [] if prof_data.get('capability', False): data = prof_data['capability'].get_clean(depth) return data def write_netdomain(prof_data, depth): data = [] if prof_data.get('network', False): data = prof_data['network'].get_clean(depth) return data def write_dbus(prof_data, depth): data = [] if prof_data.get('dbus', False): data = prof_data['dbus'].get_clean(depth) return data def write_mount_rules(prof_data, depth, allow): pre = ' ' * depth data = [] # no mount rules, so return if not prof_data[allow].get('mount', False): return data for mount_rule in prof_data[allow]['mount']: data.append('%s%s' % (pre, mount_rule.serialize())) data.append('') return data def write_mount(prof_data, depth): data = write_mount_rules(prof_data, depth, 'deny') data += write_mount_rules(prof_data, depth, 'allow') return data def write_signal(prof_data, depth): data = [] if prof_data.get('signal', False): data = prof_data['signal'].get_clean(depth) return data def write_ptrace(prof_data, depth): data = [] if prof_data.get('ptrace', False): data = prof_data['ptrace'].get_clean(depth) return data def write_pivot_root_rules(prof_data, depth, allow): pre = ' ' * depth data = [] # no pivot_root rules, so return if not prof_data[allow].get('pivot_root', False): return data for pivot_root_rule in prof_data[allow]['pivot_root']: data.append('%s%s' % (pre, pivot_root_rule.serialize())) data.append('') return data def write_pivot_root(prof_data, depth): data = write_pivot_root_rules(prof_data, depth, 'deny') data += write_pivot_root_rules(prof_data, depth, 'allow') return data def write_unix_rules(prof_data, depth, allow): pre = ' ' * depth data = [] # no unix rules, so return if not prof_data[allow].get('unix', False): return data for unix_rule in prof_data[allow]['unix']: data.append('%s%s' % (pre, unix_rule.serialize())) data.append('') return data def write_unix(prof_data, depth): data = write_unix_rules(prof_data, depth, 'deny') data += write_unix_rules(prof_data, depth, 'allow') return data def write_link_rules(prof_data, depth, allow): pre = ' ' * depth data = [] allowstr = set_allow_str(allow) if prof_data[allow].get('link', False): for path in sorted(prof_data[allow]['link'].keys()): to_name = prof_data[allow]['link'][path]['to'] subset = '' if prof_data[allow]['link'][path]['mode'] & apparmor.aamode.AA_LINK_SUBSET: subset = 'subset' audit = '' if prof_data[allow]['link'][path].get('audit', False): audit = 'audit ' path = quote_if_needed(path) to_name = quote_if_needed(to_name) data.append('%s%s%slink %s%s -> %s,' % (pre, audit, allowstr, subset, path, to_name)) data.append('') return data def write_links(prof_data, depth): data = write_link_rules(prof_data, depth, 'deny') data += write_link_rules(prof_data, depth, 'allow') return data def write_file(prof_data, depth): data = [] if prof_data.get('file', False): data = prof_data['file'].get_clean(depth) return data def write_rules(prof_data, depth): data = write_alias(prof_data, depth) data += write_list_vars(prof_data, depth) data += write_includes(prof_data, depth) data += write_rlimits(prof_data, depth) data += write_capabilities(prof_data, depth) data += write_netdomain(prof_data, depth) data += write_dbus(prof_data, depth) data += write_mount(prof_data, depth) data += write_signal(prof_data, depth) data += write_ptrace(prof_data, depth) data += write_pivot_root(prof_data, depth) data += write_unix(prof_data, depth) data += write_links(prof_data, depth) data += write_file(prof_data, depth) data += write_change_profile(prof_data, depth) return data def write_piece(profile_data, depth, name, nhat, write_flags): pre = ' ' * depth data = [] wname = None inhat = False if name == nhat: wname = name else: wname = name + '//' + nhat name = nhat inhat = True data += write_header(profile_data[name], depth, wname, False, write_flags) data += write_rules(profile_data[name], depth + 1) pre2 = ' ' * (depth + 1) if not inhat: # Embedded hats for hat in list(filter(lambda x: x != name, sorted(profile_data.keys()))): if not profile_data[hat]['external']: data.append('') if profile_data[hat]['profile']: data += list(map(str, write_header(profile_data[hat], depth + 1, hat, True, write_flags))) else: data += list(map(str, write_header(profile_data[hat], depth + 1, '^' + hat, True, write_flags))) data += list(map(str, write_rules(profile_data[hat], depth + 2))) data.append('%s}' % pre2) data.append('%s}' % pre) # External hats for hat in list(filter(lambda x: x != name, sorted(profile_data.keys()))): if name == nhat and profile_data[hat].get('external', False): data.append('') data += list(map(lambda x: ' %s' % x, write_piece(profile_data, depth - 1, name, nhat, write_flags))) data.append(' }') return data def serialize_profile(profile_data, name, options): string = '' include_metadata = False include_flags = True data = [] if options: # and type(options) == dict: if options.get('METADATA', False): include_metadata = True if options.get('NO_FLAGS', False): include_flags = False if include_metadata: string = '# Last Modified: %s\n' % time.asctime() if (profile_data[name].get('repo', False) and profile_data[name]['repo']['url'] and profile_data[name]['repo']['user'] and profile_data[name]['repo']['id']): repo = profile_data[name]['repo'] string += '# REPOSITORY: %s %s %s\n' % (repo['url'], repo['user'], repo['id']) elif profile_data[name]['repo'].get('neversubmit'): string += '# REPOSITORY: NEVERSUBMIT\n' # if profile_data[name].get('initial_comment', False): # comment = profile_data[name]['initial_comment'] # comment.replace('\\n', '\n') # string += comment + '\n' prof_filename = get_profile_filename(name) if filelist.get(prof_filename, False): data += write_alias(filelist[prof_filename], 0) data += write_list_vars(filelist[prof_filename], 0) data += write_includes(filelist[prof_filename], 0) #Here should be all the profiles from the files added write after global/common stuff for prof in sorted(filelist[prof_filename]['profiles'].keys()): if prof != name: if original_aa[prof][prof].get('initial_comment', False): comment = original_aa[prof][prof]['initial_comment'] comment.replace('\\n', '\n') data += [comment + '\n'] data += write_piece(original_aa[prof], 0, prof, prof, include_flags) else: if profile_data[name].get('initial_comment', False): comment = profile_data[name]['initial_comment'] comment.replace('\\n', '\n') data += [comment + '\n'] data += write_piece(profile_data, 0, name, name, include_flags) string += '\n'.join(data) return string + '\n' def serialize_parse_profile_start(line, file, lineno, profile, hat, prof_data_profile, prof_data_external, correct): (profile, hat, attachment, flags, in_contained_hat, pps_set_profile, pps_set_hat_external) = parse_profile_start(line, file, lineno, profile, hat) if hat and profile != hat and '%s//%s'%(profile, hat) in line and not prof_data_external: correct = False return (profile, hat, attachment, flags, in_contained_hat, correct) def serialize_profile_from_old_profile(profile_data, name, options): data = [] string = '' include_metadata = False include_flags = True prof_filename = get_profile_filename(name) write_filelist = deepcopy(filelist[prof_filename]) write_prof_data = deepcopy(profile_data) # XXX profile_data / write_prof_data contain only one profile with its hats # XXX this will explode if a file contains multiple profiles, see https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1528139 # XXX fixing this needs lots of write_prof_data[hat] -> write_prof_data[profile][hat] changes (and of course also a change in the calling code) # XXX (the better option is a full rewrite of serialize_profile_from_old_profile()) if options: # and type(options) == dict: if options.get('METADATA', False): include_metadata = True if options.get('NO_FLAGS', False): include_flags = False if include_metadata: string = '# Last Modified: %s\n' % time.asctime() if (profile_data[name].get('repo', False) and profile_data[name]['repo']['url'] and profile_data[name]['repo']['user'] and profile_data[name]['repo']['id']): repo = profile_data[name]['repo'] string += '# REPOSITORY: %s %s %s\n' % (repo['url'], repo['user'], repo['id']) elif profile_data[name]['repo']['neversubmit']: string += '# REPOSITORY: NEVERSUBMIT\n' if not os.path.isfile(prof_filename): raise AppArmorException(_("Can't find existing profile to modify")) # profiles_list = filelist[prof_filename].keys() # XXX with open_file_read(prof_filename) as f_in: profile = None hat = None write_methods = {'alias': write_alias, 'lvar': write_list_vars, 'include': write_includes, 'rlimit': write_rlimits, 'capability': write_capabilities, 'network': write_netdomain, 'dbus': write_dbus, 'mount': write_mount, 'signal': write_signal, 'ptrace': write_ptrace, 'pivot_root': write_pivot_root, 'unix': write_unix, 'link': write_links, 'file': write_file, 'change_profile': write_change_profile, } default_write_order = [ 'alias', 'lvar', 'include', 'rlimit', 'capability', 'network', 'dbus', 'mount', 'signal', 'ptrace', 'pivot_root', 'unix', 'link', 'file', 'change_profile', ] # prof_correct = True # XXX correct? segments = {'alias': False, 'lvar': False, 'include': False, 'rlimit': False, 'capability': False, 'network': False, 'dbus': False, 'mount': False, 'signal': True, # not handled otherwise yet 'ptrace': True, # not handled otherwise yet 'pivot_root': False, 'unix': False, 'link': False, 'file': False, 'change_profile': False, 'include_local_started': False, # unused } def write_prior_segments(prof_data, segments, line): data = [] for segs in list(filter(lambda x: segments[x], segments.keys())): depth = len(line) - len(line.lstrip()) data += write_methods[segs](prof_data, int(depth / 2)) segments[segs] = False # delete rules from prof_data to avoid duplication (they are in data now) if prof_data['allow'].get(segs, False): prof_data['allow'].pop(segs) if prof_data['deny'].get(segs, False): prof_data['deny'].pop(segs) if prof_data.get(segs, False): t = type(prof_data[segs]) prof_data[segs] = t() return data #data.append('reading prof') for line in f_in: correct = True line = line.rstrip('\n') #data.append(' ')#data.append('read: '+line) if RE_PROFILE_START.search(line): (profile, hat, attachment, flags, in_contained_hat, correct) = serialize_parse_profile_start( line, prof_filename, None, profile, hat, write_prof_data[hat]['profile'], write_prof_data[hat]['external'], correct) if not write_prof_data[hat]['name'] == profile: correct = False if not write_filelist['profiles'][profile][hat] is True: correct = False if not write_prof_data[hat]['flags'] == flags: correct = False #Write the profile start if correct: if write_filelist: data += write_alias(write_filelist, 0) data += write_list_vars(write_filelist, 0) data += write_includes(write_filelist, 0) data.append(line) else: if write_prof_data[hat]['name'] == profile: depth = len(line) - len(line.lstrip()) data += write_header(write_prof_data[name], int(depth / 2), name, False, include_flags) elif RE_PROFILE_END.search(line): # DUMP REMAINDER OF PROFILE if profile: depth = int(len(line) - len(line.lstrip()) / 2) + 1 # first write sections that were modified #for segs in write_methods.keys(): for segs in default_write_order: if segments[segs]: data += write_methods[segs](write_prof_data[name], depth) segments[segs] = False # delete rules from write_prof_data to avoid duplication (they are in data now) if write_prof_data[name]['allow'].get(segs, False): write_prof_data[name]['allow'].pop(segs) if write_prof_data[name]['deny'].get(segs, False): write_prof_data[name]['deny'].pop(segs) if write_prof_data[name].get(segs, False): t = type(write_prof_data[name][segs]) write_prof_data[name][segs] = t() # then write everything else for segs in default_write_order: data += write_methods[segs](write_prof_data[name], depth) write_prof_data.pop(name) #Append local includes data.append(line) if not in_contained_hat: # Embedded hats depth = int((len(line) - len(line.lstrip())) / 2) pre2 = ' ' * (depth + 1) for hat in list(filter(lambda x: x != name, sorted(profile_data.keys()))): if not profile_data[hat]['external']: data.append('') if profile_data[hat]['profile']: data += list(map(str, write_header(profile_data[hat], depth + 1, hat, True, include_flags))) else: data += list(map(str, write_header(profile_data[hat], depth + 1, '^' + hat, True, include_flags))) data += list(map(str, write_rules(profile_data[hat], depth + 2))) data.append('%s}' % pre2) # External hats for hat in list(filter(lambda x: x != name, sorted(profile_data.keys()))): if profile_data[hat].get('external', False): data.append('') data += list(map(lambda x: ' %s' % x, write_piece(profile_data, depth - 1, name, name, include_flags))) data.append(' }') if in_contained_hat: #Hat processed, remove it hat = profile in_contained_hat = False else: profile = None elif CapabilityRule.match(line): cap = CapabilityRule.parse(line) if write_prof_data[hat]['capability'].is_covered(cap, True, True): if not segments['capability'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['capability'] = True write_prof_data[hat]['capability'].delete(cap) data.append(line) else: # To-Do pass elif RE_PROFILE_LINK.search(line): matches = RE_PROFILE_LINK.search(line).groups() audit = False if matches[0]: audit = True allow = 'allow' if matches[1] and matches[1].strip() == 'deny': allow = 'deny' subset = matches[3] link = strip_quotes(matches[6]) value = strip_quotes(matches[7]) if not write_prof_data[hat][allow]['link'][link]['to'] == value: correct = False if not write_prof_data[hat][allow]['link'][link]['mode'] & apparmor.aamode.AA_MAY_LINK: correct = False if subset and not write_prof_data[hat][allow]['link'][link]['mode'] & apparmor.aamode.AA_LINK_SUBSET: correct = False if audit and not write_prof_data[hat][allow]['link'][link]['audit'] & apparmor.aamode.AA_LINK_SUBSET: correct = False if correct: if not segments['link'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['link'] = True write_prof_data[hat][allow]['link'].pop(link) data.append(line) else: # To-Do pass elif ChangeProfileRule.match(line): change_profile_obj = ChangeProfileRule.parse(line) if write_prof_data[hat]['change_profile'].is_covered(change_profile_obj, True, True): if not segments['change_profile'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['change_profile'] = True write_prof_data[hat]['change_profile'].delete(change_profile_obj) data.append(line) elif RE_PROFILE_ALIAS.search(line): matches = RE_PROFILE_ALIAS.search(line).groups() from_name = strip_quotes(matches[0]) to_name = strip_quotes(matches[1]) if profile: if not write_prof_data[hat]['alias'][from_name] == to_name: correct = False else: if not write_filelist['alias'][from_name] == to_name: correct = False if correct: if not segments['alias'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['alias'] = True if profile: write_prof_data[hat]['alias'].pop(from_name) else: write_filelist['alias'].pop(from_name) data.append(line) else: #To-Do pass elif RlimitRule.match(line): rlimit_obj = RlimitRule.parse(line) if write_prof_data[hat]['rlimit'].is_covered(rlimit_obj, True, True): if not segments['rlimit'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['rlimit'] = True write_prof_data[hat]['rlimit'].delete(rlimit_obj) data.append(line) else: #To-Do pass elif RE_PROFILE_BOOLEAN.search(line): matches = RE_PROFILE_BOOLEAN.search(line).groups() bool_var = matches[0] value = matches[1] if not write_prof_data[hat]['lvar'][bool_var] == value: correct = False if correct: if not segments['lvar'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['lvar'] = True write_prof_data[hat]['lvar'].pop(bool_var) data.append(line) else: #To-Do pass elif RE_PROFILE_VARIABLE.search(line): matches = RE_PROFILE_VARIABLE.search(line).groups() list_var = strip_quotes(matches[0]) var_operation = matches[1] value = strip_quotes(matches[2]) var_set = hasher() if var_operation == '+=': correct = False # adding proper support for "add to variable" needs big changes # (like storing a variable's "history" - where it was initially defined and what got added where) # so just skip any comparison and assume a non-match elif profile: store_list_var(var_set, list_var, value, var_operation, prof_filename) if not var_set[list_var] == write_prof_data['lvar'].get(list_var, False): correct = False else: store_list_var(var_set, list_var, value, var_operation, prof_filename) if not var_set[list_var] == write_filelist['lvar'].get(list_var, False): correct = False if correct: if not segments['lvar'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['lvar'] = True if profile: write_prof_data[hat]['lvar'].pop(list_var) else: write_filelist['lvar'].pop(list_var) data.append(line) else: #To-Do pass elif re_match_include(line): include_name = re_match_include(line) if profile: if write_prof_data[hat]['include'].get(include_name, False): if not segments['include'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['include'] = True write_prof_data[hat]['include'].pop(include_name) data.append(line) else: if write_filelist['include'].get(include_name, False): write_filelist['include'].pop(include_name) data.append(line) elif NetworkRule.match(line): network_obj = NetworkRule.parse(line) if write_prof_data[hat]['network'].is_covered(network_obj, True, True): if not segments['network'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['network'] = True write_prof_data[hat]['network'].delete(network_obj) data.append(line) elif RE_PROFILE_CHANGE_HAT.search(line): # "^hat," declarations are no longer supported, ignore them and don't write out the line # (parse_profile_data() already prints a warning about that) pass elif RE_PROFILE_HAT_DEF.search(line): matches = RE_PROFILE_HAT_DEF.search(line) in_contained_hat = True hat = matches.group('hat') hat = strip_quotes(hat) flags = matches.group('flags') if not write_prof_data[hat]['flags'] == flags: correct = False if not write_filelist['profile'][profile][hat]: correct = False if correct: data.append(line) else: #To-Do pass elif FileRule.match(line): # leading permissions could look like a keyword, therefore handle file rules after everything else file_obj = FileRule.parse(line) if write_prof_data[hat]['file'].is_covered(file_obj, True, True): if not segments['file'] and True in segments.values(): data += write_prior_segments(write_prof_data[name], segments, line) segments['file'] = True write_prof_data[hat]['file'].delete(file_obj) data.append(line) else: #To-Do pass else: if correct: data.append(line) else: #To-Do pass # data.append('prof done') # if write_filelist: # data += write_alias(write_filelist, 0) # data += write_list_vars(write_filelist, 0) # data += write_includes(write_filelist, 0) # data.append('from filelist over') # data += write_piece(write_prof_data, 0, name, name, include_flags) string += '\n'.join(data) return string + '\n' def write_profile_ui_feedback(profile): aaui.UI_Info(_('Writing updated profile for %s.') % profile) write_profile(profile) def write_profile(profile): prof_filename = None if aa[profile][profile].get('filename', False): prof_filename = aa[profile][profile]['filename'] else: prof_filename = get_profile_filename(profile) newprof = tempfile.NamedTemporaryFile('w', suffix='~', delete=False, dir=profile_dir) if os.path.exists(prof_filename): shutil.copymode(prof_filename, newprof.name) else: #permission_600 = stat.S_IRUSR | stat.S_IWUSR # Owner read and write #os.chmod(newprof.name, permission_600) pass serialize_options = {} serialize_options['METADATA'] = True profile_string = serialize_profile(aa[profile], profile, serialize_options) newprof.write(profile_string) newprof.close() os.rename(newprof.name, prof_filename) if profile in changed: changed.pop(profile) else: debug_logger.info("Unchanged profile written: %s (not listed in 'changed' list)" % profile) original_aa[profile] = deepcopy(aa[profile]) def is_known_rule(profile, rule_type, rule_obj): # XXX get rid of get() checks after we have a proper function to initialize a profile if profile.get(rule_type, False): if profile[rule_type].is_covered(rule_obj, False): return True includelist = list(profile['include'].keys()) checked = [] while includelist: incname = includelist.pop(0) checked.append(incname) if os.path.isdir(get_include_path(incname)): includelist += include_dir_filelist(profile_dir, incname) else: if include[incname][incname].get(rule_type, False): if include[incname][incname][rule_type].is_covered(rule_obj, False): return True for childinc in include[incname][incname]['include'].keys(): if childinc not in checked: includelist += [childinc] return False def get_file_perms(profile, path, audit, deny): '''get the current permissions for the given path''' perms = profile['file'].get_perms_for_path(path, audit, deny) includelist = list(profile['include'].keys()) checked = [] while includelist: incname = includelist.pop(0) if incname in checked: continue checked.append(incname) if os.path.isdir(get_include_path(incname)): includelist += include_dir_filelist(profile_dir, incname) else: incperms = include[incname][incname]['file'].get_perms_for_path(path, audit, deny) for allow_or_deny in ['allow', 'deny']: for owner_or_all in ['all', 'owner']: for perm in incperms[allow_or_deny][owner_or_all]: perms[allow_or_deny][owner_or_all].add(perm) if 'a' in perms[allow_or_deny][owner_or_all] and 'w' in perms[allow_or_deny][owner_or_all]: perms[allow_or_deny][owner_or_all].remove('a') # a is a subset of w, so remove it for incpath in incperms['paths']: perms['paths'].add(incpath) for childinc in include[incname][incname]['include'].keys(): if childinc not in checked: includelist += [childinc] return perms def propose_file_rules(profile_obj, rule_obj): '''Propose merged file rules based on the existing profile and the log events - permissions get merged - matching paths from existing rules, common_glob() and user_globs get proposed - IMPORTANT: modifies rule_obj.original_perms and rule_obj.perms''' options = [] original_path = rule_obj.path.regex merged_rule_obj = deepcopy(rule_obj) # make sure not to modify the original rule object (with exceptions, see end of this function) existing_perms = get_file_perms(profile_obj, rule_obj.path, False, False) for perm in existing_perms['allow']['all']: # XXX also handle owner-only perms merged_rule_obj.perms.add(perm) merged_rule_obj.raw_rule = None if 'a' in merged_rule_obj.perms and 'w' in merged_rule_obj.perms: merged_rule_obj.perms.remove('a') # a is a subset of w, so remove it pathlist = {original_path} | existing_perms['paths'] | set(glob_common(original_path)) for user_glob in user_globs: if user_globs[user_glob].match(original_path): pathlist.add(user_glob) pathlist = order_globs(pathlist, original_path) # paths in existing rules that match the original path for path in pathlist: merged_rule_obj.store_edit(path) merged_rule_obj.raw_rule = None options.append(merged_rule_obj.get_clean()) merged_rule_obj.exec_perms = None rule_obj.original_perms = existing_perms if rule_obj.perms != merged_rule_obj.perms: rule_obj.perms = merged_rule_obj.perms rule_obj.raw_rule = None return options def reload_base(bin_path): if not check_for_apparmor(): return None prof_filename = get_profile_filename(bin_path) # XXX use reload_profile() from tools.py instead (and don't hide output in /dev/null) subprocess.call("cat '%s' | %s -I%s -r >/dev/null 2>&1" % (prof_filename, parser, profile_dir), shell=True) def reload(bin_path): bin_path = find_executable(bin_path) if not bin_path: return None return reload_base(bin_path) def get_include_data(filename): data = [] if not filename.startswith('/'): filename = profile_dir + '/' + filename if os.path.exists(filename): with open_file_read(filename) as f_in: data = f_in.readlines() else: raise AppArmorException(_('File Not Found: %s') % filename) return data def include_dir_filelist(profile_dir, include_name): '''returns a list of files in the given profile_dir/include_name directory, except skippable files. If include_name is an absolute path, ignore profile_dir. ''' files = [] include_name_abs = get_include_path(include_name) for path in os.listdir(include_name_abs): path = path.strip() if is_skippable_file(path): continue if os.path.isfile(include_name_abs + '/' + path): file_name = include_name + '/' + path # strip off profile_dir for non-absolute paths if not include_name.startswith('/'): file_name = file_name.replace(profile_dir + '/', '') files.append(file_name) return files def load_include(incname): load_includeslist = [incname] while load_includeslist: incfile = load_includeslist.pop(0) incfile_abs = get_include_path(incfile) if include.get(incfile, {}).get(incfile, False): pass # already read, do nothing elif os.path.isfile(incfile_abs): data = get_include_data(incfile_abs) incdata = parse_profile_data(data, incfile, True) attach_profile_data(include, incdata) #If the include is a directory means include all subfiles elif os.path.isdir(incfile_abs): load_includeslist += include_dir_filelist(profile_dir, incfile) else: raise AppArmorException("Include file %s not found" % (incfile_abs)) return 0 def check_qualifiers(program): if cfg['qualifiers'].get(program, False): if cfg['qualifiers'][program] != 'p': fatal_error(_("%s is currently marked as a program that should not have its own\nprofile. Usually, programs are marked this way if creating a profile for \nthem is likely to break the rest of the system. If you know what you\'re\ndoing and are certain you want to create a profile for this program, edit\nthe corresponding entry in the [qualifiers] section in /etc/apparmor/logprof.conf.") % program) return False def get_subdirectories(current_dir): """Returns a list of all directories directly inside given directory""" if sys.version_info < (3, 0): return os.walk(current_dir).next()[1] else: return os.walk(current_dir).__next__()[1] def loadincludes(): incdirs = get_subdirectories(profile_dir) for idir in incdirs: if is_skippable_dir(idir): continue for dirpath, dirname, files in os.walk(profile_dir + '/' + idir): if is_skippable_dir(dirpath): continue for fi in files: if is_skippable_file(fi): continue else: fi = dirpath + '/' + fi fi = fi.replace(profile_dir + '/', '', 1) load_include(fi) def glob_common(path): globs = [] if re.search('[\d\.]+\.so$', path) or re.search('\.so\.[\d\.]+$', path): libpath = path libpath = re.sub('[\d\.]+\.so$', '*.so', libpath) libpath = re.sub('\.so\.[\d\.]+$', '.so.*', libpath) if libpath != path: globs.append(libpath) for glob in cfg['globs']: if re.search(glob, path): globbedpath = path globbedpath = re.sub(glob, cfg['globs'][glob], path) if globbedpath != path: globs.append(globbedpath) return sorted(set(globs)) def combine_name(name1, name2): if name1 == name2: return name1 else: return '%s^%s' % (name1, name2) def logger_path(): logger = conf.find_first_file(cfg['settings']['logger']) or '/bin/logger' if not os.path.isfile(logger) or not os.access(logger, os.EX_OK): raise AppArmorException("Can't find logger!\nPlease make sure %s exists, or update the 'logger' path in logprof.conf." % logger) return logger ######Initialisations###### def init_aa(confdir="/etc/apparmor"): global CONFDIR global conf global cfg global profile_dir global extra_profile_dir global parser if CONFDIR: return # config already initialized (and possibly changed afterwards), so don't overwrite the config variables CONFDIR = confdir conf = apparmor.config.Config('ini', CONFDIR) cfg = conf.read_config('logprof.conf') # prevent various failures if logprof.conf doesn't exist if not cfg.sections(): cfg.add_section('settings') cfg.add_section('required_hats') if cfg['settings'].get('default_owner_prompt', False): cfg['settings']['default_owner_prompt'] = '' profile_dir = conf.find_first_dir(cfg['settings'].get('profiledir')) or '/etc/apparmor.d' if not os.path.isdir(profile_dir): raise AppArmorException('Can\'t find AppArmor profiles in %s' % (profile_dir)) extra_profile_dir = conf.find_first_dir(cfg['settings'].get('inactive_profiledir')) or '/usr/share/apparmor/extra-profiles/' parser = conf.find_first_file(cfg['settings'].get('parser')) or '/sbin/apparmor_parser' if not os.path.isfile(parser) or not os.access(parser, os.EX_OK): raise AppArmorException('Can\'t find apparmor_parser at %s' % (parser))