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authorKali Kaneko <kali@leap.se>2014-06-12 16:30:04 -0500
committerKali Kaneko <kali@leap.se>2014-06-13 11:15:23 -0500
commit0a32a844127f610027ea011182a0612d6dd61c5a (patch)
tree4aaae5e37125a2ad5390571b6e284486ce11f66e /src/leap/bitmask
parentdea498f1e09c17b6c86519dd95ea430744ecd30d (diff)
do reinstall binaries if their hash is not the expected
Closes: #5759 For this to work, the bundle needs to call:: ``python setup.py hash_binaries`` during the bundling process, so that the right hash gets updated in the bitmask/_binaries.py file.
Diffstat (limited to 'src/leap/bitmask')
-rw-r--r--src/leap/bitmask/services/eip/vpnlauncher.py64
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