internal DHCPv6Packet HandleRelease(DHCPv6Packet packet, IDHCPv6ServerPropertiesResolver properyResolver)
{
var innerPacket = packet.GetInnerPacket();
DUID clientIdentifier = innerPacket.GetClientIdentifer();
UInt32?identityAssociationId = innerPacket.GetNonTemporaryIdentityAssocationId();
UInt32?prefixIdentityAssociationId = innerPacket.GetPrefixDelegationIdentityAssocationId();
DHCPv6Lease lease = DHCPv6Lease.NotFound;
if (identityAssociationId.HasValue == true)
{
lease = Leases.GetLeaseAssociationIdAndDuid(identityAssociationId.Value, clientIdentifier);
}
else
{
var tempLease = Leases.GetLeaseByClientDuid(clientIdentifier);
if (tempLease.PrefixDelegation != DHCPv6PrefixDelegation.None &&
tempLease.PrefixDelegation.IdentityAssociation == prefixIdentityAssociationId.Value
)
{
lease = tempLease;
}
}
DHCPv6Packet response;
var error = DHCPv6ReleaseHandledEvent.ReleaseError.NoError;
if (lease == DHCPv6Lease.NotFound)
{
response = DHCPv6Packet.AsError(packet, DHCPv6StatusCodes.NoBinding, properyResolver.GetServerDuid());
error = DHCPv6ReleaseHandledEvent.ReleaseError.NoLeaseFound;
}
else
{
if (lease.IsActive() == false)
{
response = DHCPv6Packet.AsError(packet, DHCPv6StatusCodes.NoBinding, properyResolver.GetServerDuid());
}
else
{
PrefixBinding prefixBinding = lease.PrefixDelegation != DHCPv6PrefixDelegation.None ?
PrefixBinding.FromLease(lease) : null;
lease.Release(identityAssociationId.HasValue == false);
Leases.Remove(lease);
response = DHCPv6Packet.AsReleaseResponse(packet, lease.IdentityAssocicationId, lease.PrefixDelegation.IdentityAssociation, properyResolver.GetServerDuid());
if (prefixBinding != null)
{
AddNotificationTrigger(PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(
Id, prefixBinding));
}
}
}
base.Apply(new DHCPv6ReleaseHandledEvent(this.Id, packet, response, error));
return(response);
}
public void GetTypeIdentifier()
{
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(Guid.Empty);
var identifier = trigger.GetTypeIdentifier();
Assert.Equal("PrefixEdgeRouterBindingUpdatedTrigger", identifier);
}
public async Task IsValid_False_NoDirectMeber_AndNotChild()
{
Random random = new Random();
var condition = GetConditionWithScopeTree(random, out Guid _);
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(random.NextGuid());
Boolean actual = await condition.IsValid(trigger);
Assert.False(actual);
}
public async Task IsValid_True_NoDirectMeber_ButFoundAsChild()
{
Random random = new Random();
var condition = GetConditionWithScopeTree(random, out Guid childId);
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(childId);
Boolean actual = await condition.IsValid(trigger);
Assert.True(actual);
}
public async Task IsValid_False_NoChildScopes()
{
Random random = new Random();
var condition = GetCondition(random, false, out _);
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(random.NextGuid());
Boolean actual = await condition.IsValid(trigger);
Assert.False(actual);
}
public void NoChanges()
{
Random random = new Random();
Guid guid = random.NextGuid();
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(guid);
Assert.NotNull(trigger);
Assert.Equal(guid, trigger.ScopeId);
Assert.Null(trigger.NewBinding);
Assert.Null(trigger.OldBinding);
}
public async Task IsValid_True_IdIsDirectMember()
{
Random random = new Random();
var condition = GetCondition(random, false, out IEnumerable <Guid> scopeIds);
Guid scopeId = scopeIds.ElementAt(random.Next(0, scopeIds.Count()));
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(scopeId);
Boolean actual = await condition.IsValid(trigger);
Assert.True(actual);
}
protected internal override void ProcessExpiredLeases(IEnumerable <DHCPv6Lease> expiredLeases)
{
foreach (var item in expiredLeases)
{
if (item.PrefixDelegation != DHCPv6PrefixDelegation.None)
{
AddNotificationTrigger(PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(
Id, PrefixBinding.FromLease(item)));
}
}
base.ProcessExpiredLeases(expiredLeases);
}
public void WithOldBinding()
{
Random random = new Random();
Guid guid = random.NextGuid();
PrefixBinding prefixBinding = new PrefixBinding(
IPv6Address.FromString("fe80:1:2::0"), new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(62)),
IPv6Address.FromString("fe80:FF:2::3"));
var trigger = PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(guid, prefixBinding);
Assert.NotNull(trigger);
Assert.Equal(guid, trigger.ScopeId);
Assert.Equal(prefixBinding, trigger.OldBinding);
Assert.Null(trigger.NewBinding);
}
public override Boolean UpdateAddressProperties(Guid id, DHCPv6ScopeAddressProperties addressProperties)
{
CheckUpdateAddressProperties(id, addressProperties);
var leases = GetScopeById(id).Leases.GetAllLeasesNotInRange(addressProperties.Start, addressProperties.End);
base.Apply(new DHCPv6ScopeAddressPropertiesUpdatedEvent(id, addressProperties));
foreach (var item in leases)
{
if (item.PrefixDelegation != DHCPv6PrefixDelegation.None)
{
AddTrigger(PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(id, PrefixBinding.FromLease(item)));
}
base.Apply(new DHCPv6LeaseCanceledEvent(item.Id, id, LeaseCancelReasons.AddressRangeChanged));
}
return(true);
}
public async Task FullCycle()
{
Random random = new Random();
String dbName = $"{random.Next()}";
String eventStorePrefix = random.GetAlphanumericString();
var serviceInteractions = GetTestClient(dbName, eventStorePrefix);
Guid scopeId = Guid.Parse("7ec8da2e-73a8-4205-9dd8-9bde4be5434a");
try
{
var firstResponse = await serviceInteractions.Client.PostAsync("/api/notifications/pipelines/", GetContent(new
{
name = "my first pipeline",
description = "my first pipeline description",
triggerName = "PrefixEdgeRouterBindingUpdatedTrigger",
condtionName = "DHCPv6ScopeIdNotificationCondition",
conditionProperties = new Dictionary <String, String> {
{ "includesChildren", JsonConvert.SerializeObject(true) }, { "scopeIds", JsonConvert.SerializeObject(new[] { scopeId }) }
},
actorName = "NxOsStaticRouteUpdaterNotificationActor",
actorProperties = new Dictionary <String, String> {
{ "url", "https://192.168.1.1" }, { "username", "5353535" }, { "password", "36363636" }
},
}));
Guid firstId = await IsObjectResult <Guid>(firstResponse);
Assert.NotEqual(Guid.Empty, firstId);
var secondResponse = await serviceInteractions.Client.PostAsync("/api/notifications/pipelines/", GetContent(new
{
name = "my second pipeline",
description = "my second pipeline description",
triggerName = "PrefixEdgeRouterBindingUpdatedTrigger",
condtionName = "DHCPv6ScopeIdNotificationCondition",
conditionProperties = new Dictionary <String, String> {
{ "includesChildren", JsonConvert.SerializeObject(true) }, { "scopeIds", JsonConvert.SerializeObject(new[] { scopeId }) }
},
actorName = "NxOsStaticRouteUpdaterNotificationActor",
actorProperties = new Dictionary <String, String> {
{ "url", "https://192.168.1.1" }, { "username", "5353535" }, { "password", "36363636" }
},
}));
Guid secondId = await IsObjectResult <Guid>(secondResponse);
Assert.NotEqual(Guid.Empty, secondId);
var thirdresponse = await serviceInteractions.Client.DeleteAsync($"/api/notifications/pipelines/{firstId}");
await IsEmptyResult(thirdresponse);
serviceInteractions.Client.Dispose();
serviceInteractions = GetTestClient(dbName, eventStorePrefix);
var resultResponse = await serviceInteractions.Client.GetAsync("/api/notifications/pipelines/");
var result = await IsObjectResult <IEnumerable <NotificationPipelineReadModel> >(resultResponse);
Assert.Single(result);
Assert.Equal(secondId, result.First().Id);
var newPrefix = new PrefixBinding(IPv6Address.FromString("fe80:1000::"), new IPv6SubnetMaskIdentifier(32), IPv6Address.FromString("fe80::2"));
var actorServiceMock = serviceInteractions.ActorServiceMock;
Int32 actorFired = 0;;
actorServiceMock.Setup(x => x.Connect("https://192.168.1.1", "5353535", "36363636")).ReturnsAsync(true).Verifiable();
actorServiceMock.Setup(x => x.AddIPv6StaticRoute(newPrefix.Prefix, newPrefix.Mask.Identifier, newPrefix.Host)).ReturnsAsync(true).Callback(() => actorFired++).Verifiable();
await serviceInteractions.ServiceBus.Publish(new NewTriggerHappendMessage(new[] { PrefixEdgeRouterBindingUpdatedTrigger.WithNewBinding(scopeId, newPrefix) }));
Int32 triesLeft = 10;
while (triesLeft-- > 0)
{
await Task.Delay(1000);
if (actorFired > 0)
{
break;
}
}
actorServiceMock.Verify();
}
finally
{
await EventStoreClientDisposer.CleanUp(eventStorePrefix, null);
await DatabaseTestingUtility.DeleteDatabase(dbName);
}
}
public async Task Handle(Boolean oldPrefixHasValue, Boolean newPrefixHasValue)
{
Random random = new Random();
String address = "https://" + random.GetIPv4Address().ToString() + ":8081";
String username = random.GetAlphanumericString();
String password = random.GetAlphanumericString();
PrefixBinding oldPrefix = new PrefixBinding(IPv6Address.FromString("2cff:34::0"), new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(38)), IPv6Address.FromString("fe80::2"));
PrefixBinding newPrefix = new PrefixBinding(IPv6Address.FromString("1cff:50::0"), new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(38)), IPv6Address.FromString("fe80::CC"));
Guid scopeId = random.NextGuid();
PrefixEdgeRouterBindingUpdatedTrigger trigger;
if (newPrefixHasValue == true && oldPrefixHasValue == true)
{
trigger = PrefixEdgeRouterBindingUpdatedTrigger.WithOldAndNewBinding(scopeId, oldPrefix, newPrefix);
}
else if (newPrefixHasValue == true && oldPrefixHasValue == false)
{
trigger = PrefixEdgeRouterBindingUpdatedTrigger.WithNewBinding(scopeId, newPrefix);
}
else if (newPrefixHasValue == false && oldPrefixHasValue == true)
{
trigger = PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(scopeId, oldPrefix);
}
else
{
trigger = PrefixEdgeRouterBindingUpdatedTrigger.NoChanges(scopeId);
}
Mock <INxOsDeviceConfigurationService> deviceServiceMock = new Mock <INxOsDeviceConfigurationService>(MockBehavior.Strict);
deviceServiceMock.Setup(x => x.Connect(address, username, password)).ReturnsAsync(true).Verifiable();
if (oldPrefixHasValue == true)
{
deviceServiceMock.Setup(x => x.RemoveIPv6StaticRoute(oldPrefix.Prefix, oldPrefix.Mask.Identifier, oldPrefix.Host)).ReturnsAsync(true).Verifiable();
}
if (newPrefixHasValue == true)
{
deviceServiceMock.Setup(x => x.AddIPv6StaticRoute(newPrefix.Prefix, newPrefix.Mask.Identifier, newPrefix.Host)).ReturnsAsync(true).Verifiable();
}
var actor = new NxOsStaticRouteUpdaterNotificationActor(deviceServiceMock.Object,
Mock.Of <ILogger <NxOsStaticRouteUpdaterNotificationActor> >());
actor.ApplyValues(new Dictionary <String, String>
{
{ "Url", "\"" + address + "\"" },
{ "Password", "\"" + password + "\"" },
{ "Username", "\"" + username + "\"" },
});
var pipeline = NotificationPipelineTester.CreatePipleline(random, trigger.GetTypeIdentifier(), NotificationCondition.True, actor);
var pipelineResult = await pipeline.Execute(trigger);
Assert.Equal(NotifactionPipelineExecutionResults.Success, pipelineResult);
deviceServiceMock.Verify();
}
internal DHCPv6Packet HandleSolicitWithPrefixDelegation(DHCPv6Packet packet, IDHCPv6ServerPropertiesResolver properyResolver)
{
DHCPv6Packet innerPacket = packet.GetInnerPacket();
var addressProperties = GetAddressProperties();
Boolean rapitCommit = addressProperties.IsRapitCommitEnabled() && innerPacket.HasRapitCommitOption();
DUID clientDuid = innerPacket.GetClientIdentifer();
DHCPv6Lease currentLease = Leases.GetLeaseByClientDuid(clientDuid);
DHCPv6Packet response = null;
Boolean responseNeeded = false;
Int32 waitingForLease = 15;
// In some client implementations like Cisco IOS XE, two solicit packets are sent, one for an address and a second for a prefix, which would be handled without this loop.
// Unfortunately, the PD is sent first and as long as the router received an answer for the address the PD packet is not sent again. Hence, progressing is delayed for a small amount of time.
while ((currentLease == DHCPv6Lease.NotFound || currentLease.IsActive() == false) && --waitingForLease > 0)
{
Task.Delay(100).GetAwaiter().GetResult();
currentLease = Leases.GetLeaseByClientDuid(clientDuid);
}
if (currentLease == DHCPv6Lease.NotFound)
{
_logger.LogDebug("no lease for client duid {duid} found", clientDuid);
base.Apply(new DHCPv6SolicitHandledEvent(this.Id, packet, DHCPv6SolicitHandledEvent.SolicitErros.LeaseNotFound));
}
else if (currentLease.IsActive() == false)
{
_logger.LogDebug("lease with {address} for client duid {duid} found but not active. state is {state}", currentLease.Address, clientDuid, currentLease.State);
base.Apply(new DHCPv6SolicitHandledEvent(this.Id, packet, DHCPv6SolicitHandledEvent.SolicitErros.LeaseNotActive));
}
else if (addressProperties.PrefixDelgationInfo == null)
{
_logger.LogDebug("prefix delegation for {name} is not enabled", Name);
base.Apply(new DHCPv6SolicitHandledEvent(this.Id, packet, DHCPv6SolicitHandledEvent.SolicitErros.PrefixDelegationNotAvailable));
}
else
{
if (IsFreshPrefix(currentLease) == false)
{
responseNeeded = true;
}
else
{
_logger.LogInformation("a fresh leased prefix found. Skipping creating of a new prefix");
}
}
if (responseNeeded == true)
{
UInt32 prefixIdentityAsscocationId = packet.GetInnerPacket().GetPrefixDelegationIdentityAssocationId().Value;
var prefix = addressProperties.GetValidPrefix(Leases.GetUsedPrefixes(), prefixIdentityAsscocationId);
currentLease.UpdateAddressPrefix(prefix, false);
_logger.LogDebug("prefix {prefix}/{lenth} for id {id} is generated", currentLease.PrefixDelegation.NetworkAddress, currentLease.PrefixDelegation.Mask.Identifier.Value, currentLease.PrefixDelegation.IdentityAssociation);
if (rapitCommit == true)
{
_logger.LogDebug("rapit commit is enabled. sending packet as reply");
response = DHCPv6Packet.AsPrefixReplyWithRapitCommit(
packet, addressProperties, DHCPv6ScopeProperties.Empty, currentLease, properyResolver.GetServerDuid());
base.AddNotificationTrigger(
PrefixEdgeRouterBindingUpdatedTrigger.WithNewBinding(Id, PrefixBinding.FromLease(currentLease)
));
}
else
{
_logger.LogDebug("rapit commit is not enabled. sending packet as advertise");
response = DHCPv6Packet.AsPrefixAdvertise(
packet, addressProperties, DHCPv6ScopeProperties.Empty, currentLease, properyResolver.GetServerDuid());
}
base.Apply(new DHCPv6SolicitHandledEvent(this.Id, packet, response, rapitCommit));
}
return(response);
}
private DHCPv6Packet HandleLeaseExtentions(DHCPv6Packet packet, IDHCPv6ServerPropertiesResolver properyResolver, out LeaseExtentionsErros extentionError)
{
var innerPacket = packet.GetInnerPacket();
var addressProperties = GetAddressProperties();
DUID clientIdentifier = innerPacket.GetClientIdentifer();
UInt32? identityAssociationId = innerPacket.GetNonTemporaryIdentityAssocationId();
UInt32? prefixIdentityAsscocationId = innerPacket.GetPrefixDelegationIdentityAssocationId();
DHCPv6Lease lease;
if (identityAssociationId.HasValue == false && prefixIdentityAsscocationId.HasValue == true)
{
DHCPv6Lease belongingLease = Leases.GetLeaseByClientDuid(clientIdentifier);
if (belongingLease == DHCPv6Lease.NotFound)
{
extentionError = LeaseExtentionsErros.OnlyPrefixIsNotAllowed;
return(DHCPv6Packet.AsError(packet, DHCPv6StatusCodes.NoBinding, properyResolver.GetServerDuid()));
}
// In some client implementations like Cisco IOS XE, two renew packets are sent, one for an address and a second for a prefix.
// Unfortunately, if the PD is sent first, the lease is not extented. So... we just wait a second and hopefully than the lease is ready
Task.Delay(1000).GetAwaiter().GetResult();
lease = Leases.GetLeaseByClientDuid(clientIdentifier);
}
else
{
lease = Leases.GetLeaseAssociationIdAndDuid(identityAssociationId.Value, clientIdentifier);
}
DHCPv6Packet response = null;
extentionError = LeaseExtentionsErros.NoError;
if (lease == DHCPv6Lease.NotFound)
{
response = DHCPv6Packet.AsError(packet, DHCPv6StatusCodes.NoBinding, properyResolver.GetServerDuid());
extentionError = LeaseExtentionsErros.LeaseNotFound;
}
else
{
DHCPv6Lease leaseUsedToGenerateResponse = null;
if (addressProperties.ReuseAddressIfPossible == true && lease.CanBeExtended() == true)
{
var tempDelegation = lease.PrefixDelegation;
Boolean resetPrefix = false;
if (prefixIdentityAsscocationId.HasValue == false && tempDelegation != DHCPv6PrefixDelegation.None)
{
resetPrefix = true;
AddNotificationTrigger(
PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(Id,
PrefixBinding.FromLease(lease)));
}
else if (tempDelegation == DHCPv6PrefixDelegation.None && prefixIdentityAsscocationId.HasValue == true)
{
var prefix = addressProperties.GetValidPrefix(Leases.GetUsedPrefixes(), prefixIdentityAsscocationId.Value, lease.PrefixDelegation.NetworkAddress);
lease.UpdateAddressPrefix(prefix, false);
AddNotificationTrigger(
PrefixEdgeRouterBindingUpdatedTrigger.WithNewBinding(Id,
PrefixBinding.FromLease(lease)));
}
if (identityAssociationId.HasValue == true)
{
var timers = GetLeaseTimers(addressProperties);
lease.Renew(timers.Lifespan, timers.RenewTime, timers.ReboundTime, false, resetPrefix);
}
leaseUsedToGenerateResponse = lease;
}
else
{
if ((identityAssociationId.HasValue == true && IsFreshLease(lease) == true) ||
(prefixIdentityAsscocationId.HasValue == true && IsFreshPrefix(lease) == true))
{
leaseUsedToGenerateResponse = lease;
}
else
{
PrefixBinding oldBinding = null;
PrefixBinding newBinding = null;
if (lease.PrefixDelegation != DHCPv6PrefixDelegation.None)
{
oldBinding = PrefixBinding.FromLease(lease);
}
if (lease.AddressIsInUse() == true && identityAssociationId.HasValue == true)
{
Leases.Revoke(lease);
}
IPv6Address leaseAddress = identityAssociationId.HasValue == true?GetLeasedAddress(addressProperties, lease.Address) : lease.Address;
DHCPv6PrefixDelegation leasedPrefix = DHCPv6PrefixDelegation.None;
if (prefixIdentityAsscocationId.HasValue == true)
{
leasedPrefix = addressProperties.GetValidPrefix(Leases.GetUsedPrefixes(), prefixIdentityAsscocationId.Value, lease.PrefixDelegation.NetworkAddress);
newBinding = new PrefixBinding(leasedPrefix.NetworkAddress, leasedPrefix.Mask, leaseAddress);
if (identityAssociationId.HasValue == false)
{
lease.UpdateAddressPrefix(leasedPrefix, false);
}
}
if (leaseAddress == IPv6Address.Empty)
{
base.Apply(new DHCPv6ScopeAddressesAreExhaustedEvent(Id));
AddNotificationTrigger(PrefixEdgeRouterBindingUpdatedTrigger.WithOldBinding(Id, oldBinding));
response = DHCPv6Packet.AsError(packet, DHCPv6StatusCodes.NoAddrsAvail, properyResolver.GetServerDuid());
extentionError = LeaseExtentionsErros.NoAddressAvailaibe;
}
else
{
leaseUsedToGenerateResponse = identityAssociationId.HasValue == false ? lease :
AddLease(packet, addressProperties, clientIdentifier, identityAssociationId.Value, prefixIdentityAsscocationId, lease, leaseAddress, leasedPrefix);
/*
* Leases.AddLease(
* Guid.NewGuid(),
* leaseAddress,
* addressProperties.ValidLeaseTime.Value,
* addressProperties.T1.Value * addressProperties.ValidLeaseTime.Value,
* addressProperties.T2.Value * addressProperties.ValidLeaseTime.Value,
* identityAssociationId.Value,
* clientIdentifier,
* Resolver.HasUniqueIdentifier == true ? Resolver.GetUniqueIdentifier(packet) : null,
* prefixIdentityAsscocationId.HasValue == false ? DHCPv6PrefixDelegation.None : leasedPrefix,
* lease
* )
*/
if (identityAssociationId.HasValue == true)
{
leaseUsedToGenerateResponse.RemovePendingState();
}
if (newBinding != null || oldBinding != null && oldBinding != newBinding)
{
AddNotificationTrigger(new PrefixEdgeRouterBindingUpdatedTrigger(oldBinding, newBinding, Id));
}
}
}
}
if (extentionError == LeaseExtentionsErros.NoError)
{
response = DHCPv6Packet.AsReply(packet, addressProperties, GetScopeProperties(), leaseUsedToGenerateResponse, false, properyResolver.GetServerDuid(), false);
}
}
return(response);
}