diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/leap/bitmask/services/eip/vpnlauncher.py | 64 |
1 files changed, 57 insertions, 7 deletions
diff --git a/src/leap/bitmask/services/eip/vpnlauncher.py b/src/leap/bitmask/services/eip/vpnlauncher.py index 58ca0c33..0731bee3 100644 --- a/src/leap/bitmask/services/eip/vpnlauncher.py +++ b/src/leap/bitmask/services/eip/vpnlauncher.py @@ -18,6 +18,7 @@ Platform independant VPN launcher interface. """ import getpass +import hashlib import logging import os import stat @@ -77,7 +78,7 @@ def _has_updown_scripts(path, warn=True): def _has_other_files(path, warn=True): """ - Checks the existence of other important files. + Check the existence of other important files. :param path: the path to be checked :type path: str @@ -256,7 +257,7 @@ class VPNLauncher(object): @classmethod def get_vpn_env(kls): """ - Returns a dictionary with the custom env for the platform. + Return a dictionary with the custom env for the platform. This is mainly used for setting LD_LIBRARY_PATH to the correct path when distributing a standalone client @@ -267,7 +268,7 @@ class VPNLauncher(object): @classmethod def missing_updown_scripts(kls): """ - Returns what updown scripts are missing. + Return what updown scripts are missing. :rtype: list """ @@ -287,7 +288,7 @@ class VPNLauncher(object): @classmethod def missing_other_files(kls): """ - Returns what other important files are missing during startup. + Return what other important files are missing during startup. Same as missing_updown_scripts but does not check for exec bit. :rtype: list @@ -297,6 +298,55 @@ class VPNLauncher(object): "auncher before calling this method") other = force_eval(kls.OTHER_FILES) file_exist = partial(_has_other_files, warn=False) - zipped = zip(other, map(file_exist, other)) - missing = filter(lambda (path, exists): exists is False, zipped) - return [path for path, exists in missing] + + if flags.STANDALONE: + try: + from leap.bitmask import _binaries + except ImportError: + raise RuntimeError( + "Could not find binary hash info in this bundle!") + + _, bitmask_root_path, openvpn_bin_path = other + + check_hash = _has_expected_binary_hash + openvpn_hash = _binaries.OPENVPN_BIN + bitmask_root_hash = _binaries.BITMASK_ROOT + + correct_hash = ( + True, # we do not check the polkit file + check_hash(bitmask_root_path, bitmask_root_hash), + check_hash(openvpn_bin_path, openvpn_hash)) + + zipped = zip(other, map(file_exist, other), correct_hash) + missing = filter( + lambda (path, exists, hash_ok): ( + exists is False or hash_ok is False), + zipped) + return [path for path, exists, hash_ok in missing] + else: + zipped = zip(other, map(file_exist, other)) + missing = filter(lambda (path, exists): exists is False, zipped) + return [path for path, exists in missing] + + +def _has_expected_binary_hash(path, expected_hash): + """ + Check if the passed path matches the expected hash. + + Used from within the bundle, to know if we have to reinstall the shipped + binaries into the system path. + + This path will be /usr/local/sbin for linux. + + :param path: the path to check. + :type path: str + :param expected_hash: the sha256 hash that we expect + :type expected_hash: str + :rtype: bool + """ + try: + with open(path) as f: + file_hash = hashlib.sha256(f.read()).hexdigest() + return expected_hash == file_hash + except IOError: + return False |