forked from project-chip/connectedhomeip
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
ESP32: Add EndpointQueueFilter for ESP32 platform (project-chip#31440)
* Cherry-pick the Endpoint QueueFilter fix * Add EndpointQueueFilter for ESP32 platform * Restyled by clang-format * Restyled by gn * fix compile error when disabling inet ipv4 * review changes * Restyled by clang-format * review changes * review changes --------- Co-authored-by: Restyled.io <[email protected]>
- Loading branch information
1 parent
1c9b875
commit cfc5fb4
Showing
4 changed files
with
168 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| /* | ||
| * | ||
| * Copyright (c) 2023 Project CHIP Authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <inet/EndpointQueueFilter.h> | ||
| #include <inet/IPAddress.h> | ||
| #include <lwip/ip_addr.h> | ||
|
|
||
| namespace chip { | ||
| namespace Inet { | ||
|
|
||
| class ESP32EndpointQueueFilter : public EndpointQueueFilter | ||
| { | ||
| public: | ||
| CHIP_ERROR SetMdnsHostName(const chip::CharSpan & hostName) | ||
| { | ||
| ReturnErrorCodeIf(hostName.size() != sizeof(mHostNameBuffer), CHIP_ERROR_INVALID_ARGUMENT); | ||
| ReturnErrorCodeIf(!IsValidMdnsHostName(hostName), CHIP_ERROR_INVALID_ARGUMENT); | ||
| memcpy(mHostNameBuffer, hostName.data(), hostName.size()); | ||
| return CHIP_NO_ERROR; | ||
| } | ||
|
|
||
| FilterOutcome FilterBeforeEnqueue(const void * endpoint, const IPPacketInfo & pktInfo, | ||
| const chip::System::PacketBufferHandle & pktPayload) override | ||
| { | ||
| if (!IsMdnsBroadcastPacket(pktInfo)) | ||
| { | ||
| return FilterOutcome::kAllowPacket; | ||
| } | ||
| // Drop the mDNS packets which don't contain 'matter' or '<device-hostname>'. | ||
| const uint8_t matterBytes[] = { 'm', 'a', 't', 't', 'e', 'r' }; | ||
| if (PayloadContains(pktPayload, ByteSpan(matterBytes)) || PayloadContainsHostNameCaseInsensitive(pktPayload)) | ||
| { | ||
| return FilterOutcome::kAllowPacket; | ||
| } | ||
| return FilterOutcome::kDropPacket; | ||
| } | ||
|
|
||
| FilterOutcome FilterAfterDequeue(const void * endpoint, const IPPacketInfo & pktInfo, | ||
| const chip::System::PacketBufferHandle & pktPayload) override | ||
| { | ||
| return FilterOutcome::kAllowPacket; | ||
| } | ||
|
|
||
| private: | ||
| // TODO: Add unit tests for these static functions | ||
| static bool IsMdnsBroadcastPacket(const IPPacketInfo & pktInfo) | ||
| { | ||
| if (pktInfo.DestPort == 5353) | ||
| { | ||
| #if INET_CONFIG_ENABLE_IPV4 | ||
| ip_addr_t mdnsIPv4BroadcastAddr = IPADDR4_INIT_BYTES(224, 0, 0, 251); | ||
| if (pktInfo.DestAddress == chip::Inet::IPAddress(mdnsIPv4BroadcastAddr)) | ||
| { | ||
| return true; | ||
| } | ||
| #endif | ||
| ip_addr_t mdnsIPv6BroadcastAddr = IPADDR6_INIT_HOST(0xFF020000, 0, 0, 0xFB); | ||
| if (pktInfo.DestAddress == chip::Inet::IPAddress(mdnsIPv6BroadcastAddr)) | ||
| { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| static bool PayloadContains(const chip::System::PacketBufferHandle & payload, const chip::ByteSpan & byteSpan) | ||
| { | ||
| if (payload->HasChainedBuffer() || payload->TotalLength() < byteSpan.size()) | ||
| { | ||
| return false; | ||
| } | ||
| for (size_t i = 0; i <= payload->TotalLength() - byteSpan.size(); ++i) | ||
| { | ||
| if (memcmp(payload->Start() + i, byteSpan.data(), byteSpan.size()) == 0) | ||
| { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| bool PayloadContainsHostNameCaseInsensitive(const chip::System::PacketBufferHandle & payload) | ||
| { | ||
| uint8_t hostNameLowerCase[12]; | ||
| memcpy(hostNameLowerCase, mHostNameBuffer, sizeof(mHostNameBuffer)); | ||
| for (size_t i = 0; i < sizeof(hostNameLowerCase); ++i) | ||
| { | ||
| if (hostNameLowerCase[i] <= 'F' && hostNameLowerCase[i] >= 'A') | ||
| { | ||
| hostNameLowerCase[i] = static_cast<uint8_t>('a' + hostNameLowerCase[i] - 'A'); | ||
| } | ||
| } | ||
| return PayloadContains(payload, ByteSpan(mHostNameBuffer)) || PayloadContains(payload, ByteSpan(hostNameLowerCase)); | ||
| } | ||
|
|
||
| static bool IsValidMdnsHostName(const chip::CharSpan & hostName) | ||
| { | ||
| for (size_t i = 0; i < hostName.size(); ++i) | ||
| { | ||
| char ch_data = *(hostName.data() + i); | ||
| if (!((ch_data >= '0' && ch_data <= '9') || (ch_data >= 'A' && ch_data <= 'F'))) | ||
| { | ||
| return false; | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| uint8_t mHostNameBuffer[12] = { 0 }; | ||
| }; | ||
|
|
||
| } // namespace Inet | ||
| } // namespace chip |