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* ike: Move fragmentation to ike_sa_tTobias Brunner2014-10-103-62/+94
| | | | | | | | | The message() hook on bus_t is now called exactly once before (plain) and once after fragmenting (!plain), not twice for the complete message and again for each individual fragment, as was the case in earlier iterations. For inbound messages the hook is called once for each fragment (!plain) and twice for the reassembled message.
* message: fragment() generates message and fragments and caches themTobias Brunner2014-10-103-58/+109
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* message: Make packet argument optional in generate()Tobias Brunner2014-10-101-1/+4
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* ikev1: Move fragment generation to message_tTobias Brunner2014-10-104-136/+247
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* ike: Rename encryption_payload to encrypted_payloadTobias Brunner2014-10-109-101/+97
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* ikev1: Fix handling of UNITY_LOAD_BALANCETobias Brunner2014-10-071-3/+3
| | | | | The re-authentication is now handled within the original IKE_SA if it has not yet been established, so we don't want to destroy it.
* ikev1: Don't queue more than one mode config or XAuth taskTobias Brunner2014-10-071-7/+22
| | | | | | | | At the time we reset an IKE_SA (e.g. when re-authenticating a not yet established SA due to a roaming event) such tasks might already be queued by one of the phase 1 tasks. If the SA is initiated again another task will get queued by the phase 1 task. This results in e.g. multiple mode config requests, which most gateways will have problems with.
* ext-auth: Add an ext-auth plugin invoking an external authorization scriptMartin Willi2014-10-066-0/+492
| | | | Original patch courtesy of Vyronas Tsingaras.
* updown: Use process abstraction to invoke updown scriptMartin Willi2014-10-061-246/+215
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* stroke: Allow specifying the ipsec.secrets location in strongswan.confShea Levy2014-10-021-2/+10
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* ikev1: Be more verbose if a peer config would match, but is unusable for ModeMartin Willi2014-09-251-0/+12
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* ikev2: Reorder task activation for established IKE SAsTobias Brunner2014-09-251-11/+11
| | | | We now prefer MOBIKE tasks over delete tasks then the rest.
* Revert "ikev2: Insert MOBIKE tasks at the front of the queue"Tobias Brunner2014-09-251-6/+1
| | | | | | | | This reverts commit 3293d146289d7c05e6c6089ae1f7cdbcea378e63. The position of tasks in the queue does not actually determine the order in which they are activated. Instead this is determined by the statements in task_manager_v2_t.initiate().
* plugin-loader: Support a reload() callback for static featuresMartin Willi2014-09-221-1/+1
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* vici: Add a command to reload strongswan.confMartin Willi2014-09-221-0/+12
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* encoding: Accept all exchange types for non IKEv1/IKEv2 major versionsMartin Willi2014-09-221-5/+11
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* ikev2: Don't treat initial messages as MOBIKE exchangesTobias Brunner2014-09-161-6/+9
| | | | | The MOBIKE task is active during the initial exchanges but we don't want to treat them as actual MOBIKE exchanges (i.e. there is no path probing).
* ikev1: Don't cache last block of INFORMATIONAL messages as IVTobias Brunner2014-09-121-2/+2
| | | | | | | | | We don't expect a response with the same MID, but apparently some devices (e.g. FRITZ!Box) do that for DPDs, while still treating the response as a new exchange. By storing the last message block as IV we can't decrypt the first block of such a response. Fixes #661.
* ikev1: Log IV when encrypting messagesTobias Brunner2014-09-121-0/+1
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* ikev1: Skip unusable IPComp proposalsTobias Brunner2014-09-121-1/+1
| | | | Fixes #661.
* ikev1: Properly handle different proposal numbering schemesTobias Brunner2014-09-121-5/+10
| | | | | | | | | | | | | | | | | | While the examples in RFC 2408 show proposal numbers starting at 1 and increasing by one for each subsequent proposal this is not mandatory. Actually, IKEv1 proposals may start at any number, the only requirement is that the proposal numbers increase monotonically they don't have to do so consecutively. Most implementations follow the examples and start numbering at 1 (charon, racoon, Shrew, Cisco, Windows XP, FRITZ!Box) but pluto was one of the implementations that started with 0 and there might be others out there. The previous assumption that implementations always start numbering proposals at 0 caused problems with clients that start numbering with 1 and whose first proposal consists of multiple protocols (e.g. ESP+IPComp). Fixes #661.
* ikev2: Reduce timeout if path probing was enabledTobias Brunner2014-09-121-6/+13
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* ikev2: Defer MOBIKE updates if no path is availableTobias Brunner2014-09-121-7/+14
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* ike-mobike: Allow calling transmit() even when not currently path probingTobias Brunner2014-09-121-5/+17
| | | | Path probing is enabled if the current path is not available anymore.
* ikev2: Defer path probing if no path is currently availableTobias Brunner2014-09-121-1/+20
| | | | | We do the same before initiating the task, so we should probably do it too when we already initiated it, not just time out and destroy the SA.
* ike-mobike: Return FALSE in transmit() if no path was availableTobias Brunner2014-09-122-3/+7
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* ikev2: Enable path probing for currently active MOBIKE taskTobias Brunner2014-09-121-0/+18
| | | | | | | This might not be the case if e.g. an address appeared but the old one is still available but not actually usable. Without this the MOBIKE task would eventually time out even though we might be able to switch to a working address.
* ike-mobike: Add method to enable path probingTobias Brunner2014-09-122-0/+12
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* ike-mobike: Skip peer addresses we can't send packets to when checking pathsTobias Brunner2014-09-121-5/+18
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* ikev2: Skip peer addresses we can't send packets to when looking for valid pathsTobias Brunner2014-09-121-0/+18
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* ikev2: Insert MOBIKE tasks at the front of the queueTobias Brunner2014-09-121-1/+6
| | | | | In case we have no usable path to the other peer there is no point in initiating any other tasks (like rekeying).
* ikev2: Migrate number of pending MOBIKE updatesTobias Brunner2014-09-121-0/+5
| | | | | This will probably never be more than 1 since we only have one task queued at a time and we don't migrate running tasks.
* ikev2: Properly keep track of pending MOBIKE updatesTobias Brunner2014-09-121-8/+27
| | | | | | | | Because we only queue one MOBIKE task at a time, but destroy superfluous ones only after we already increased the counter for pending MOBIKE updates, we have to reduce the counter when such tasks are destroyed. Otherwise, the queued task would assume another task is queued when it is running and ignore any successful response.
* child-cfg: Ignore duplicate proposalsTobias Brunner2014-09-121-0/+11
| | | | | If ESP proposals are added once with and once without DH groups duplicates result during IKE_AUTH when DH groups are stripped.
* proposal: Fix equals()Tobias Brunner2014-09-121-5/+5
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* eap-radius: Forward Cisco and Microsoft specific DNS/NBNS attributesTobias Brunner2014-09-091-0/+50
| | | | Fixes #677.
* ikev1: Make sure proposed IPsec mode matches our ownTobias Brunner2014-09-091-1/+2
| | | | References #557.
* ike: Reset IKE_SA in state CONNECTING instead of reauthenticatingTobias Brunner2014-09-091-0/+8
| | | | | | | | Due to how reauthentication works for IKEv1 we could get a second IKE_SA, which might cause problems, when connectivity problems arise when the connection is initially established. Fixes #670.
* ha: Don't adopt IKEv1 children when building without IKEv1 supportMartin Willi2014-08-281-0/+2
| | | | | | | The adopt_children_job_create() function is not available when IKEv1 support is disabled. Fixes uncommon builds using --enable-ha --disable-ikev1. Fixes #690.
* unity: Do not bump TS to 0.0.0.0/0 as initiator when no Split-Include receivedMartin Willi2014-08-251-1/+21
| | | | | | | When having the unity plugin enabled and both peers send the Unity Vendor ID, we proposed 0.0.0.0/0 as traffic selector, even if no Split-Include has been received on the SA. This can break compatibility with some responders, as they don't narrow the TS themselves, but expect the configured TS.
* unity: Handle narrowing according to roles in the IKE_SATobias Brunner2014-08-251-16/+33
| | | | | | Since the narrow hook types reflect the roles in the Quick Mode exchange the plugin behaved incorrectly if the server initiated the CHILD_SA rekeying.
* ikev1: Defer Mode Config push after CHILD adoption when using XAuthMartin Willi2014-08-254-6/+40
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* ikev1: Defer Mode Config push after CHILD adoption and reauth detectionMartin Willi2014-08-252-10/+35
| | | | | | | | When an initiator starts reauthentication on a connection that uses push mode to assign a virtual IP, we can't execute the Mode Config before releasing the virtual IP. Otherwise we would request a new and different lease, which the client probably can't handle. Defer Mode Config execution, so the same IP gets first released then reassigned during reauthentication.
* ikev1: Extend adopt_children_job by task queuing, executed after adoptionMartin Willi2014-08-252-0/+48
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* ikev1: Accept Quick Mode DELETES while Quick Mode rekeying is activeMartin Willi2014-08-251-2/+21
| | | | | | | | | | If a peer immediately sends DELETE messages when completing Quick Mode rekeying, the third Quick Mode message and the DELETE are sent simultaneously. This implies that DELETE messages may arrive before the completing third Quick Mode message. Handle this case by ignoring the DELETE INFORMATIONAL in Quick Mode and let the delete task handle it.
* ike-sa-manager: Use transient hasher for IKE_SA_INIT hash calculationChristophe Gouault2014-08-251-32/+11
| | | | | | | | | | | | | | | | To check if a received IKE_SA_INIT request is a new request or a retransmit, charon maintains hashes of the pending IKE_SA_INIT exchanges. However, the hash calculation is not reentrant because a single hasher is used for the whole IKE SA manager. It leads to bogus calculations under high load and hence dropped messages on responder (IkeInInvalidSpi incremented). Don't share a single hasher in the IKE SA manager, create a transient one whenever a message must be hashed. Signed-off-by: Christophe Gouault <christophe.gouault@6wind.com>
* bus: Add ike_reestablish_pre hook, called before DNS resolutionTobias Brunner2014-07-224-9/+69
| | | | | The old hook is renamed to ike_reestablish_post and is now also called when the initiation of the new IKE_SA failed.
* receiver: Send a single INVALID_MAJOR_VERSION notify for IKE version > 2Martin Willi2014-07-171-3/+1
| | | | | | | | | We sent both a notify using IKEv1 and IKEv2. This is a little more aggressive than required, RFC 5996 says we "SHOULD send an unauthenticated Notify message of type INVALID_MAJOR_VERSION containing the highest (closest) version number it supports". Fixes #657.
* xauth-pam: Add workaround for null-terminated passwordsTobias Brunner2014-07-071-1/+6
| | | | Fixes #631.
* stroke: Don't log unspecified options of conn and ca sectionsTobias Brunner2014-06-301-37/+50
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