1 // Copyright 2024 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 "bm_instance.hpp"
16
17 #include "commands.hpp"
18 #include "errors.hpp"
19 #include "handler.hpp"
20
21 #include <ipmid/api-types.hpp>
22 #include <stdplus/print.hpp>
23
24 #include <span>
25 #include <vector>
26
27 namespace google
28 {
29 namespace ipmi
30 {
31
32 namespace
33 {
34 #ifndef MAX_IPMI_BUFFER
35 #define MAX_IPMI_BUFFER 64
36 #endif
37 } // namespace
38
39 struct BMInstancePropertyRequest
40 {
41 std::uint8_t bmInstancePropertyType;
42 } __attribute__((packed));
43
getBMInstanceProperty(std::span<const uint8_t> data,HandlerInterface * handler)44 Resp getBMInstanceProperty(std::span<const uint8_t> data,
45 HandlerInterface* handler)
46 {
47 if (data.size() < sizeof(struct BMInstancePropertyRequest))
48 {
49 stdplus::print(stderr, "Invalid command length: {}\n",
50 static_cast<uint32_t>(data.size()));
51 return ::ipmi::responseReqDataLenInvalid();
52 }
53
54 std::string bmInstanceProperty =
55 handler->getBMInstanceProperty(/*type=*/data[0]);
56
57 const size_t length =
58 sizeof(struct BMInstancePropertyReply) + bmInstanceProperty.size();
59
60 if (length > MAX_IPMI_BUFFER)
61 {
62 stdplus::print(stderr, "Response would overflow response buffer\n");
63 return ::ipmi::responseInvalidCommand();
64 }
65
66 std::vector<std::uint8_t> reply;
67 reply.reserve(length);
68 reply.emplace_back(bmInstanceProperty.size());
69 reply.insert(reply.end(), bmInstanceProperty.begin(),
70 bmInstanceProperty.end());
71
72 return ::ipmi::responseSuccess(SysOEMCommands::SysGetBMInstanceProperty,
73 reply);
74 }
75 } // namespace ipmi
76 } // namespace google
77