| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. Neither the name of the copyright holder 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. |
| */ |
| |
| /** |
| * @file |
| * This file implements blacklist IEEE 802.15.4 frame filtering based on MAC address. |
| */ |
| |
| #include <openthread/config.h> |
| |
| #include "mac_blacklist.hpp" |
| |
| #include "utils/wrap_string.h" |
| |
| #include "common/code_utils.hpp" |
| |
| #if OPENTHREAD_ENABLE_MAC_WHITELIST |
| |
| namespace ot { |
| namespace Mac { |
| |
| Blacklist::Blacklist(void) |
| { |
| mEnabled = false; |
| |
| for (int i = 0; i < kMaxEntries; i++) |
| { |
| mBlacklist[i].mValid = false; |
| } |
| } |
| |
| otError Blacklist::GetEntry(uint8_t aIndex, Entry &aEntry) const |
| { |
| otError error = OT_ERROR_NONE; |
| |
| VerifyOrExit(aIndex < kMaxEntries, error = OT_ERROR_INVALID_ARGS); |
| |
| memcpy(&aEntry.mExtAddress, &mBlacklist[aIndex].mExtAddress, sizeof(aEntry.mExtAddress)); |
| aEntry.mValid = mBlacklist[aIndex].mValid; |
| |
| exit: |
| return error; |
| } |
| |
| Blacklist::Entry *Blacklist::Add(const ExtAddress &address) |
| { |
| Entry *rval; |
| |
| VerifyOrExit((rval = Find(address)) == NULL); |
| |
| for (int i = 0; i < kMaxEntries; i++) |
| { |
| if (mBlacklist[i].mValid) |
| { |
| continue; |
| } |
| |
| memcpy(&mBlacklist[i].mExtAddress, &address, sizeof(mBlacklist[i].mExtAddress)); |
| mBlacklist[i].mValid = true; |
| ExitNow(rval = &mBlacklist[i]); |
| } |
| |
| exit: |
| return rval; |
| } |
| |
| void Blacklist::Clear(void) |
| { |
| for (int i = 0; i < kMaxEntries; i++) |
| { |
| mBlacklist[i].mValid = false; |
| } |
| } |
| |
| void Blacklist::Remove(const ExtAddress &address) |
| { |
| Entry *entry; |
| |
| VerifyOrExit((entry = Find(address)) != NULL); |
| memset(entry, 0, sizeof(*entry)); |
| |
| exit: |
| return; |
| } |
| |
| Blacklist::Entry *Blacklist::Find(const ExtAddress &address) |
| { |
| Entry *rval = NULL; |
| |
| for (int i = 0; i < kMaxEntries; i++) |
| { |
| if (!mBlacklist[i].mValid) |
| { |
| continue; |
| } |
| |
| if (memcmp(&mBlacklist[i].mExtAddress, &address, sizeof(mBlacklist[i].mExtAddress)) == 0) |
| { |
| ExitNow(rval = &mBlacklist[i]); |
| } |
| } |
| |
| exit: |
| return rval; |
| } |
| |
| } // namespace Mac |
| } // namespace ot |
| |
| #endif // OPENTHREAD_ENABLE_MAC_WHITELIST |