This ensures we don't pass data (via msg_control) defined in a different
scope to sendmsg(). Actually, some compilers (e.g. GCC 5.2.1) might
optimize the memcpy() call away causing the packets not to get sent from
the intended source address.
It also makes the code clearer than with all these ifdefs.
Fixes#1171.
In some scenarios an IKE_SA might get restarted multiple times (e.g.
due to retransmits and delayed INVALID_KE_PAYLOAD notifies) so that
two IKE_SA_INIT messages might be sent that only differ in the
previously randomly generated NAT_DETECTION_SOURCE_IP payload.
This could cause an authentication failure on the responder if the two
peers don't use the same IKE_SA_INIT message in their InitiatorSignedOctets.
While the payload is generated in a reproducible way it will still change
when the daemon is restarted, which should make detecting the payloads
as fake a bit harder (compared to e.g. just using 0.0.0.0:0 as address).
Fixes#1131.
If the job gets queued for a newly created IKE_SA it might not yet be
checked in when the job is running, reschedule the job in that case.
This should fix the two p2pnat test scenarios, which occasionally
failed because one of the peers did not initiate the connection to
the mediation server.
In some cases we call wait_for_entry() but don't actually check out the
entry afterwards (e.g. because it doesn't match certain criteria). So
there won't be a call to checkin() for such entries causing waiting
threads to get signaled. Instead, such threads would be blocked until
another thread properly checks out/in the entry (or does a blocking
enumeration).
ifdown calls bind's rndc, which tries to access TCP port 953 on lo.
If these packets are dropped by the firewall we have to wait for the TCP
connections to time out, which takes quite a while.
With -W we reduce timeouts when we don't expect a response. With -i the
interval between pings is reduced (mostly in case of auto=route where
the first ping yields no reply).
It rarely takes 1 second or longer to terminate the daemon. This
decreases the runtime of the post test step a lot where `ipsec stop`
is called for multiple hosts in each test case (10-15 minutes over all
test cases).
We will use this to set some defaults (e.g. timeouts to make testing
negative tests quicker). We don't want these settings to show up in the
configs of the actual scenarios though.
This can be useful when writing custom plugins as typos or missing
linker flags that result in unresolved symbols in the shared object
could otherwise cause late crashes. In particular, if such a symbol
is used in a code path that is rarely executed. During development
and testing using RTLD_NOW instead of RTLD_LAZY will prevent the
plugin from getting loaded and makes the error visible immediately.
The `nat-local` and `nat-remote` keys contain information on the NAT
status of the local and remote IKE endpoints, respectively. If a
responder did not detect a NAT but is configured to fake a NAT situation
this is indicated by `nat-fake` (if an initiator fakes a NAT situation
`nat-local` is set). If any NAT is detected or faked `nat-any` is set.
Closesstrongswan/strongswan#16.
We don't need an IV for NULL encryption, so we wouldn't technically need
an IV generator. But some of the code currently relies on an IV
generator to be present. So we don't have to change that code and
handle IV size == 0 specially we use the new NULL IV generator, which
handles this transparently to the existing code.
Before 3c81cb6fc3 ("aead: Create AEAD using traditional transforms
with an explicit IV generator") iv_gen_rand_t was used for NULL
encryption, which would work too but this way it's clearer.
If the openssl plugin is not enabled we need these to generate session
IDs and to authenticate the users.
The md4 plugin is not needed in the manager.
Fixes#1168.
Tobias Brunner