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* bus: Add a handle_vips() hook invoked after handling configuration attributesMartin Willi2014-06-173-0/+5
| | | | | | | | | Similar to assign_vips() used by a peer assigning virtual IPs to the other peer, the handle_vips() hook gets invoked on a peers after receiving attributes. On release of the same attributes the hook gets invoked again. This is useful to inspect handled attributes, as the ike_updown() hook is invoked after authentication, when attributes have not been handled yet.
* ikev1: Invoke the assign_vips() bus hook for IKEv1 as wellMartin Willi2014-06-161-0/+4
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* ike: Create an enumerator for (un-)handled configuration attributes on IKE_SAMartin Willi2014-06-162-0/+32
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* ike: Store unhandled attributes on IKE_SA as wellMartin Willi2014-06-164-12/+12
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* child-sa: Pass the number of total policies tied to an SA to the kernelMartin Willi2014-06-041-0/+8
| | | | | This will be useful if the kernel backend has to know how many policies follow an SA install, for example if it must install all policies concurrently.
* kernel-interface: Add a flag to indicate no policy updates requiredMartin Willi2014-06-041-3/+14
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* payload: Use common prefixes for all payload type identifiersMartin Willi2014-06-0438-166/+166
| | | | | The old identifiers did not use a proper namespace and often clashed with other defines.
* ikev1: Fix debugging log when remote traffic selector selection failsMartin Willi2014-05-141-1/+1
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* child-sa: Reclaim old state if SA updating is not supportedMartin Willi2014-05-091-0/+2
| | | | | If the state stays at UPDATING, the fallback using IKEv1 rekeying fails as the task manager refuses to rekey a CHILD_SA in non-INSTALLED state.
* ike-sa-manager: Improve scalability of half-open IKE_SA checkingTobias Brunner2014-04-241-7/+8
| | | | | | | | | | | | | | | This patch is based on one by Christoph Gouault. Currently, to count the total number of half_open IKE_SAs, get_half_open_count sums up the count of each segment in the SA hash table (acquiring a lock for each segment). This procedure does not scale well when the number of segments increases, as the method is called for each new negotiation. Instead, lets maintain a global atomic counter. This optimization allows the use of big values for charon.ikesa_table_size and charon.ikesa_table_segments.
* ikev2: Reject CHILD_SA creation/rekeying while deleting an IKE_SAMartin Willi2014-04-171-0/+6
| | | | | | | | | | | If one peer starts reauthentication by deleting the IKE_SA, while the other starts CHILD_SA rekeying, we run in a race condition. To avoid it, temporarily reject the rekey attempt while we are in the IKE_SA deleting state. RFC 4306/5996 is not exactly clear about this collision, but it should be safe to reject CHILD_SA rekeying during this stage, as the reauth will re-trigger the CHILD_SA. For non-rekeying CHILD_SA creations, it's up to the peer to retry establishing the CHILD_SA on the reauthenticated IKE_SA.
* ikev2: Apply extensions and conditions before starting rekeyingMartin Willi2014-04-171-0/+6
| | | | | | The extensions and conditions apply to the rekeyed IKE_SA as well, so we should migrate them. Especially when using algorithms from private space, we need EXT_STRONGSWAN to properly select these algorithms during IKE rekeying.
* ikev2: Add inherit_pre() to apply config and hosts before IKE_SA rekeyingMartin Willi2014-04-173-14/+28
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* ikev2: Fix reauthentication if peer assigns a different virtual IPTobias Brunner2014-04-151-1/+1
| | | | | | | | | | | | | | | | | Before this change a reqid set on the create_child_t task was used as indicator of the CHILD_SA being rekeyed. Only if that was not the case would the local traffic selector be changed to 0.0.0.0/0|::/0 (as we don't know which virtual IP the gateway will eventually assign). On the other hand, in case of a rekeying the VIP is expected to remain the same, so the local TS would simply equal the VIP. Since c949a4d5016e33c5 reauthenticated CHILD_SAs also have the reqid set. Which meant that the local TS would contain the previously assigned VIP, basically rendering the gateway unable to assign a different VIP to the client as the resulting TS would not match the client's proposal anymore. Fixes #553.
* ikev2: Reject CREATE_CHILD_SA exchange on unestablished IKE_SAsMartin Willi2014-04-141-0/+9
| | | | | | | Prevents a responder peer to trick us into established state by starting IKE_SA rekeying before the IKE_SA has been authenticated during IKE_AUTH. Fixes CVE-2014-2338.
* aead: Support custom AEAD salt sizesMartin Willi2014-03-311-2/+27
| | | | | | | | | The salt, or often called implicit nonce, varies between AEAD algorithms and their use in protocols. For IKE and ESP, GCM uses 4 bytes, while CCM uses 3 bytes. With TLS, however, AEAD mode uses 4 bytes for both GCM and CCM. Our GCM backends currently support 4 bytes and CCM 3 bytes only. This is fine until we go for CCM mode support in TLS, which requires 4 byte nonces.
* ikev2: Recreate a CHILD_SA that got a hard lifetime expire without rekeyingMartin Willi2014-03-311-0/+12
| | | | | Works around issues related to system time changes and kernel backends using that system time, such as Linux XFRM.
* ikev2: Cache all received attribute certificates to auth configMartin Willi2014-03-311-1/+27
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* ikev2: Send all known and valid attribute certificates for subject certMartin Willi2014-03-311-0/+46
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* ikev2: Slightly refactor certificate payload construction to separate functionsMartin Willi2014-03-311-37/+56
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* uclibc only defines strndup(3) if _GNU_SOURCE is definedTobias Brunner2014-02-191-0/+3
| | | | References #516.
* libcharon: Use lib->ns instead of charon->nameTobias Brunner2014-02-1211-26/+26
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* ikev1: Fix config switching due to failed authentication during Aggressive modeTobias Brunner2014-02-121-3/+1
| | | | | | | The encoded ID payload gets destroyed by the authenticator, which caused a segmentation fault after the switch. Fixes #501.
* child-sa: Add a getter for CHILD_SA install timeMartin Willi2014-01-232-0/+20
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* ikev2: Add Cisco FRAGMENTATION vendor IDMartin Willi2014-01-231-0/+2
| | | | Courtesy of C.J. Adams-Collier, ZeroLag Communications, Inc.
* ikev2: Add Cisco Copyright vendor IDMartin Willi2014-01-231-0/+2
| | | | Courtesy of C.J. Adams-Collier, ZeroLag Communications, Inc.
* ikev2: Add Cisco Delete Reason vendor IDMartin Willi2014-01-231-0/+2
| | | | Courtesy of C.J. Adams-Collier, ZeroLag Communications, Inc.
* ikev2: Use a more dynamic vendor ID database, as we use with IKEv1Martin Willi2014-01-231-16/+57
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* ike: Simplify error handling if name resolution failedTobias Brunner2014-01-231-16/+3
| | | | | | | This avoids a second name resolution attempt just to determine if %any etc. was configured. Fixes #440.
* ike: Use proper hostname(s) when name resolution failedTobias Brunner2014-01-231-1/+1
| | | | | | Was wrong since 0edce687675df8f10f4026fa12a8fc3b3dd003f5. Fixes #440.
* ikev2: Wipe (optional) shared secret during CHILD_SA key derivationTobias Brunner2014-01-231-11/+14
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* ike_sa: Defer task manager destruction after child destructionThomas Egerer2014-01-164-9/+16
| | | | | | | | | | This patch exports the task manager's flush to allow flushing of all queues with one function call from ike_sa->destroy. It allows the access of intact children during task destructoin (see git-commit e44ebdcf) and allows the access of the task manager in child_state_change hook. Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
* ike: Log SK_p consistently on level 4Tobias Brunner2013-11-281-1/+1
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* trap-manager: Reset IKE_SA on bus_t if initiating failsTobias Brunner2013-11-211-0/+1
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* trap-manager: Prevent deadlock when installing trap policiesTobias Brunner2013-11-211-40/+46
| | | | | | | | | | | Because the write lock was held while calling add_policies() on child_sa_t, which finishes with a call to child_state_change() on bus_t, a deadlock would ensue if CHILD_SAs are concurrently being established, which also causes a call to child_state_change() that will require the read lock in trap_manager_t. No locks are now being held while creating the CHILD_SA and installing the trap policies.
* ikev2: Properly free DH secret in case of errors during IKE key derivationTobias Brunner2013-11-061-0/+3
| | | | Fixes #437.
* ike: Don't immediately DPD after deferred DELETEs following IKE_SA rekeyingMartin Willi2013-11-011-0/+8
| | | | | | | Some peers seem to defer DELETEs a few seconds after rekeying the IKE_SA, which is perfectly valid. For short(er) DPD delays, this leads to the situation where we send a DPD request during set_state(), but the IKE_SA has no hosts set yet. Avoid that DPD by resetting the INBOUND timestamp during set_state().
* ikev1: Properly initialize list of fragments in case fragment ID is 0Volker Rümelin2013-10-311-1/+1
| | | | Fixes CVE-2013-6076.
* Fixed some typosTobias Brunner2013-10-292-2/+2
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* trap-manager: Make sure a config is not trapped twiceTobias Brunner2013-10-171-4/+16
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* iv_gen: aead_t implementations provide an IV generatorTobias Brunner2013-10-111-0/+8
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* Remove HASH_PREFERRED, usages are replaced with HASH_SHA1, which is required ↵Tobias Brunner2013-10-111-1/+1
| | | | for IKEv2 anyway
* kernel: Use a time_t to report use time in query_policy()Martin Willi2013-10-111-2/+2
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* kernel: Use a time_t to report use time in query_sa()Martin Willi2013-10-111-3/+3
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* ike: Define keylength for aescmac algorithmMartin Willi2013-10-111-0/+1
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* ikev1: Delete quick modes with the negotiated SA protocolMartin Willi2013-10-111-1/+1
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* trap-manager: Install trap with SA protocol of the first configured proposalMartin Willi2013-10-111-4/+12
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* child-sa: Save protocol during SPI allocationMartin Willi2013-10-111-6/+3
| | | | | This allows us to properly delete the incomplete SA with the correct protocol should negotiation fail.
* ikev1: Negotiate SPI with the first/negotiated proposal protocolMartin Willi2013-10-111-3/+18
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* ikev2: Allocate SPI with the protocol of the first/negotiated proposalMartin Willi2013-10-111-2/+16
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