diff options
Diffstat (limited to 'satp/security-association.go')
-rw-r--r-- | satp/security-association.go | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/satp/security-association.go b/satp/security-association.go new file mode 100644 index 0000000..28c7851 --- /dev/null +++ b/satp/security-association.go @@ -0,0 +1,89 @@ +// +// Copyright (c) 2017 anygone contributors (see AUTHORS file) +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, this +// list of conditions and the following disclaimer. +// +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// * Neither the name of anygone nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// + +package satp + +import ( + "net" + "sync" +) + +type SecurityAssociation struct { + mtx *sync.RWMutex + kd KeyDerivation + endpoints []*net.UDPAddr + nextSeq uint32 + seqWins map[uint16]*SequenceWindow +} + +func (sa *SecurityAssociation) SetKeyDerivation(kd KeyDerivation) { + sa.mtx.Lock() + defer sa.mtx.Unlock() + sa.kd = kd +} + +func (sa *SecurityAssociation) KeyGenerate(dir Direction, usage KeyUsage, sequenceNumber uint32, out []byte) error { + sa.mtx.RLock() + defer sa.mtx.RUnlock() + return sa.kd.Generate(dir, usage, sequenceNumber, out) +} + +func (sa *SecurityAssociation) EndpointCompareAndUpdate(idx uint, ep *net.UDPAddr) { + sa.mtx.RLock() + defer sa.mtx.RUnlock() + // TODO: implement this +} + +func (sa *SecurityAssociation) EndpointsAndSequenceNumber() (seqNum uint32, eps []*net.UDPAddr) { + sa.mtx.RLock() + defer sa.mtx.RUnlock() + // TODO: implement this + return 0, nil +} + +func (sa *SecurityAssociation) SquenceNumberCheck(senderID uint16, sequenceNumber uint32) bool { + sa.mtx.RLock() + defer sa.mtx.RUnlock() + // TODO: implement this + return false +} + +func (sa *SecurityAssociation) SequenceNumberCheckAndSet(senderID uint16, sequenceNumber uint32) bool { + sa.mtx.RLock() + defer sa.mtx.RUnlock() + // TODO: implement this + return false +} + +func NewSecurityAssociation() (sa *SecurityAssociation) { + sa = &SecurityAssociation{mtx: &sync.RWMutex{}} + sa.seqWins = make(map[uint16]*SequenceWindow) + return +} |