1 // Copyright 2021 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "eth.hpp" 16 17 #include "commands.hpp" 18 #include "handler.hpp" 19 20 #include <ipmid/api-types.hpp> 21 22 #include <cstdint> 23 #include <cstring> 24 #include <span> 25 #include <string> 26 #include <tuple> 27 #include <vector> 28 29 namespace google 30 { 31 namespace ipmi 32 { 33 34 // TOOD(venture): The ipmid.h has this macro, which is a header we 35 // can't normally access. 36 #ifndef MAX_IPMI_BUFFER 37 #define MAX_IPMI_BUFFER 64 38 #endif 39 40 Resp getEthDevice(std::span<const uint8_t> data, 41 const HandlerInterface* handler) 42 { 43 std::tuple<std::uint8_t, std::string> details = 44 handler->getEthDetails(std::string(data.begin(), data.end())); 45 46 std::string device = std::get<1>(details); 47 if (device.length() == 0) 48 { 49 std::fprintf(stderr, "Invalid eth string\n"); 50 return ::ipmi::responseReqDataLenInvalid(); 51 } 52 53 if ((sizeof(struct EthDeviceReply) + device.length()) > MAX_IPMI_BUFFER) 54 { 55 std::fprintf(stderr, "Response would overflow response buffer\n"); 56 return ::ipmi::responseRetBytesUnavailable(); 57 } 58 59 std::vector<std::uint8_t> reply; 60 reply.reserve(device.length() + sizeof(struct EthDeviceReply)); 61 reply.emplace_back(std::get<0>(details)); /* channel */ 62 reply.emplace_back(device.length()); /* ifNameLength */ 63 reply.insert(reply.end(), device.begin(), device.end()); /* name */ 64 65 return ::ipmi::responseSuccess(SysOEMCommands::SysGetEthDevice, reply); 66 } 67 68 } // namespace ipmi 69 } // namespace google 70