The file is usually opened/created by root, however, if user/group IDs
are configured and the configuration is reloaded, the file will be reopened
as configured user. Like with UNIX sockets we only attempt to change
the user if we have CAP_CHOWN allowing a start as regular user.
We don't have chown() on Windows, so check for it.
Tobias Brunner [Mon, 4 May 2020 07:45:39 +0000 (09:45 +0200)]
pkcs11: Optionally hash data for PKCS#1 v1.5 RSA signatures in software
If cards/libraries don't support signature mechanisms with hashing, we fall
back to do it ourselves in software and pass the PKCS#1 digestInfo ASN.1
structure to sign via CKM_RSA_PKCS mechanism.
Tobias Brunner [Thu, 26 Mar 2020 12:52:47 +0000 (13:52 +0100)]
openssl: Allow squeezing multiple times from SHAKE128/256 XOFs
OpenSSL currently doesn't support squeezing bytes out of an XOF multiple
times. Unfortunately, EVP_DigestFinalXOF() completely resets the context
and later calls not simply fail, they cause a null-pointer dereference in
libcrypto. This fixes the crash at the cost of repeating initializing
the whole state and allocating too much data for subsequent calls.
There is an open issue and PR that might add a function that allows
squeezing more data from an XOF in a future version of OpenSSL.
Thomas Egerer [Wed, 25 Mar 2020 17:01:37 +0000 (18:01 +0100)]
settings: Use strtoul(3) for settings to int conversion
strtol(3) accepts values in the range of [LONG_MIN;LONG_MAX]. Based
on the architecture (32 or 64 bits), these values expand to either
0x8000000000000000/0x7fffffffffffffff for 64-bit builds, or
0x80000000/0x7fffffff for 32-bit builds.
The behavior when retrieving non-default values for charon.spi_min or
charon.spi_max, for example, depends on the architecture of the target
platform. While 0xC000001/0xCFFFFFFE work fine on a 64-bit build, on a
32-bit build, due to the use of strtol(3), an ERANGE causes get_int()
to return the default values.
By using strtoul(3) the default is only returned if the input value
exceeds 32 or 64 bits, based on the platform. Negative values are still
parsed correctly.
Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
Tobias Brunner [Tue, 10 Mar 2020 11:49:53 +0000 (12:49 +0100)]
Merge branch 'throw-type-routes'
Implements simpler routes for passthrough policies on Linux, which
basically act as fallbacks on routes in other routing tables. This way
they require less information (e.g. no interface or source IP) and can
be installed earlier and are not affected by updates.
Noel Kuntze [Sun, 9 Feb 2020 13:52:32 +0000 (14:52 +0100)]
kernel-netlink: Implement passthrough type routes and use them on Linux
Enables us to ignore any future kernel features for routes unless
we actually need to consider them for the source IP routes.
Also enables us to actually really skip IPsec processing for those networks
(because even the routes don't touch those packets). It's more what
users expect.
Thomas Egerer [Thu, 12 Sep 2019 14:58:46 +0000 (16:58 +0200)]
ike: Optionally allow private algorithms for IKE/CHILD_SAs
Charon refuses to make use of algorithms IDs from the private space
for unknown peer implementations [1]. If you chose to ignore and violate
that section of the RFC since you *know* your peers *must* support those
private IDs, there's no way to disable that behavior.
With this commit a strongswan.conf option is introduced which allows to
deliberately ignore parts of section 3.12 from the standard.
Tobias Brunner [Wed, 4 Mar 2020 18:26:55 +0000 (19:26 +0100)]
openssl: Don't check signature if issuer doesn't match always
Doing this for the self-signed check also (i.e. if this and issuer are
the same) is particularly useful if the issuer uses a different key type.
Otherwise, we'd try to verify the signature with an incompatible key
that would result in a log message.
Tobias Brunner [Fri, 6 Mar 2020 09:47:34 +0000 (10:47 +0100)]
Merge branch 'ikev1-transform-nr'
With these changes we return the lifetimes of the actually selected
transform back to the client, which is an issue if the peer uses
different lifetimes for different proposals. We now also return the
correct transform and proposal IDs.
Tobias Brunner [Thu, 6 Feb 2020 14:52:06 +0000 (15:52 +0100)]
ikev1: Get and set the lifetimes of the selected proposal/transform
Previously, we simply used the lifetimes of the first
proposal/transform, which is not correct if the initiator uses different
lifetimes in its proposals/transforms.
Tobias Brunner [Thu, 13 Feb 2020 09:48:49 +0000 (10:48 +0100)]
ike: Don't reestablish IKE_SAs for which a deletion is queued
If an IKE_SA is terminated while a task is active, the delete task is
simply queued (unless the deletion is forced). If the active task times
out before any optional timeout associated with the termination hits, the
IKE_SA previously was reestablished without considering the termination
request.
Tobias Brunner [Wed, 19 Feb 2020 16:38:57 +0000 (17:38 +0100)]
Remove obsolete packages directory
These Debian package sources have not been updated for years and are
severely out-of-date. Since the Debian packages are properly
maintained nowadays, we don't have to provide our own package sources
to serve as examples.
Tobias Brunner [Thu, 13 Feb 2020 16:53:17 +0000 (17:53 +0100)]
charon-nm: Use better default directory for D-Bus policy file
Also makes it configurable via configure script. Depending on `$datadir` is
not ideal as package maintainers might set that to a custom value. Depending
on `$datarootdir` might have been better, the default if pkg-config fails is
now based on that.
Tobias Brunner [Fri, 14 Feb 2020 13:47:34 +0000 (14:47 +0100)]
Merge commit 'nm-client-id'
Makes the client's IKE identity configurable in the NM GUI. For PSK
authentication the identity is now configured via that new field
and not the username anymore (old configs still work and are migrated
when edited). The client identity now also defaults to the IP address
if not configured when using EAP/PSK.
Tobias Brunner [Fri, 14 Feb 2020 12:58:50 +0000 (13:58 +0100)]
Merge branch 'nm-reauth'
With these changes, the NM service should be able to handle
reauthentication (and redirection) by switching to the new IKE_SA and
not considering the old SA going down an error.
Tobias Brunner [Fri, 14 Feb 2020 12:51:44 +0000 (13:51 +0100)]
Merge branch 'nm-eap-tls'
Adds support for EAP-TLS to the NM plugin. The certificates/key
source (file, smartcard, agent) can now be selected independently of
the authentication method (i.e. for both certificate and EAP-TLS auth).
Tobias Brunner [Wed, 5 Feb 2020 15:00:10 +0000 (16:00 +0100)]
charon-nm: Add support for EAP-TLS
The code is structured similar to that in the Android client, but two-round
authentication (cert+EAP) is not supported as that might require multiple
secrets ("password" is currently the only secret field used for every
method) and other details are currently missing too (like configurable
client identities).
Tobias Brunner [Fri, 14 Feb 2020 12:29:10 +0000 (13:29 +0100)]
Merge branch 'nm-remote-id'
This adds an optional field to the NM plugin to configure the server
identity, so it can differ from the address or certificate subject,
which are used by default.
Was fixed by making tox depend on newer versions of six so the package
gets installed/updated automatically now when installing tox. There is
also some ongoing work that tries to make virtualenv work with older
versions of six.
Tobias Brunner [Wed, 12 Feb 2020 16:49:14 +0000 (17:49 +0100)]
cirrus: Remove bashisms from test script to make it compatible with /bin/sh
Bash is not installed on the FreeBSD images here and the location would
be different anyway (`/usr/local/bin/bash`, so we'd have to change the
hashbang to e.g. `/usr/bin/env bash`).
Tobias Brunner [Thu, 12 Dec 2019 16:29:08 +0000 (17:29 +0100)]
soup: Use soup_session_new() to avoid deprecation warning
There are a ton of libsoup/GLib-related "leaks" that we can't whitelist
and with leak detective active there is a delay that interestingly doesn't
happen with soup_session_sync_new(), so tests failed with a timeout (actually
they hung due to the lock in the fetcher manager).
On Travis, the curl plugin is used for the tests, so that's not an issue
there (and without LD the tests complete quickly and successfully).
Tobias Brunner [Wed, 29 Jan 2020 10:12:12 +0000 (11:12 +0100)]
x509: Replace problematic calls of chunk_from_chars() for keyUsage extension
As noted in 8ea13bbc5ccd newer compilers might optimize out the
assignment leading to invalid values in the keyUsage extension (as the
length was still set, the extension was encoded, just not with the
intended values).
Tobias Brunner [Thu, 30 Jan 2020 10:09:04 +0000 (11:09 +0100)]
lgtm: Build external dependencies for a more complete analysis
The build system is a bit limited, only the repository directory and
LGTM_WORKSPACE is writable. sudo doesn't work at all, for others we
don't have enough permission.