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.
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.
Closesstrongswan/strongswan#168.
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.
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>
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.
Co-authored-by: Tobias Brunner <tobias@strongswan.org>
This is mainly an issue on FreeBSD where the current kernel still only
allows the daemon to use reqids < IPSEC_MANUAL_REQID_MAX (0x3fff = 16383).
Fixes#2315.
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.
[1] http://tools.ietf.org/html/rfc7296#section-3.12
Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
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.
Fixes#3357.
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.
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.
Fixes#3335.
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.
References #3339.
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