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 "machine_name.hpp"
16
17 #include "commands.hpp"
18 #include "errors.hpp"
19
20 #include <ipmid/api-types.hpp>
21 #include <stdplus/print.hpp>
22
23 #include <cstddef>
24 #include <cstdio>
25 #include <cstring>
26 #include <optional>
27 #include <span>
28 #include <string>
29 #include <vector>
30
31 namespace google
32 {
33 namespace ipmi
34 {
35
getMachineName(std::span<const uint8_t>,HandlerInterface * handler)36 Resp getMachineName(std::span<const uint8_t>, HandlerInterface* handler)
37 {
38 static std::optional<std::string> machineName;
39 if (!machineName)
40 {
41 try
42 {
43 machineName = handler->getMachineName();
44 }
45 catch (const IpmiException& e)
46 {
47 return ::ipmi::response(e.getIpmiError());
48 }
49 }
50
51 size_t len = sizeof(struct GetMachineNameReply) + machineName->size();
52 if (len > MAX_IPMI_BUFFER)
53 {
54 stdplus::print(stderr, "Response would overflow response buffer\n");
55 return ::ipmi::responseInvalidCommand();
56 }
57
58 std::vector<std::uint8_t> reply;
59 reply.reserve(len);
60 reply.emplace_back(machineName->size()); /* machineNameLength */
61 reply.insert(reply.end(), machineName->begin(),
62 machineName->end()); /* machineName */
63
64 return ::ipmi::responseSuccess(SysOEMCommands::SysMachineName, reply);
65 }
66
67 } // namespace ipmi
68 } // namespace google
69