1 #include "bios_string_attribute.hpp"
2 
3 #include "common/utils.hpp"
4 
5 #include <phosphor-logging/lg2.hpp>
6 
7 #include <iostream>
8 #include <tuple>
9 #include <variant>
10 
11 PHOSPHOR_LOG2_USING;
12 
13 using namespace pldm::utils;
14 
15 namespace pldm
16 {
17 namespace responder
18 {
19 namespace bios
20 {
21 BIOSStringAttribute::BIOSStringAttribute(const Json& entry,
22                                          DBusHandler* const dbusHandler) :
23     BIOSAttribute(entry, dbusHandler)
24 {
25     std::string strTypeTmp = entry.at("string_type");
26     auto iter = strTypeMap.find(strTypeTmp);
27     if (iter == strTypeMap.end())
28     {
29         error(
30             "Wrong string type, STRING_TYPE={STR_TYPE} ATTRIBUTE_NAME={ATTR_NAME}",
31             "STR_TYP", strTypeTmp, "ATTR_NAME", name);
32         throw std::invalid_argument("Wrong string type");
33     }
34     stringInfo.stringType = static_cast<uint8_t>(iter->second);
35 
36     stringInfo.minLength = entry.at("minimum_string_length");
37     stringInfo.maxLength = entry.at("maximum_string_length");
38     stringInfo.defLength = entry.at("default_string_length");
39     stringInfo.defString = entry.at("default_string");
40 
41     pldm_bios_table_attr_entry_string_info info = {
42         0,
43         readOnly,
44         stringInfo.stringType,
45         stringInfo.minLength,
46         stringInfo.maxLength,
47         stringInfo.defLength,
48         stringInfo.defString.data(),
49     };
50 
51     const char* errmsg;
52     auto rc = pldm_bios_table_attr_entry_string_info_check(&info, &errmsg);
53     if (rc != PLDM_SUCCESS)
54     {
55         error(
56             "Wrong field for string attribute, ATTRIBUTE_NAME={ATTR_NAME} ERRMSG={ERR_MSG} MINIMUM_STRING_LENGTH={MIN_LEN} MAXIMUM_STRING_LENGTH={MAX_LEN} DEFAULT_STRING_LENGTH={DEF_LEN} DEFAULT_STRING={DEF_STR}",
57             "ATTR_NAME", name, "ERR_MSG", errmsg, "MIN_LEN",
58             stringInfo.minLength, "MAX_LEN", stringInfo.maxLength, "DEF_LEN",
59             stringInfo.defLength, "DEF_STR", stringInfo.defString);
60         throw std::invalid_argument("Wrong field for string attribute");
61     }
62 }
63 
64 void BIOSStringAttribute::setAttrValueOnDbus(
65     const pldm_bios_attr_val_table_entry* attrValueEntry,
66     const pldm_bios_attr_table_entry*, const BIOSStringTable&)
67 {
68     if (!dBusMap.has_value())
69     {
70         return;
71     }
72 
73     PropertyValue value =
74         table::attribute_value::decodeStringEntry(attrValueEntry);
75     dbusHandler->setDbusProperty(*dBusMap, value);
76 }
77 
78 std::string BIOSStringAttribute::getAttrValue()
79 {
80     if (!dBusMap.has_value())
81     {
82         return stringInfo.defString;
83     }
84     try
85     {
86         return dbusHandler->getDbusProperty<std::string>(
87             dBusMap->objectPath.c_str(), dBusMap->propertyName.c_str(),
88             dBusMap->interface.c_str());
89     }
90     catch (const std::exception& e)
91     {
92         error(
93             "Error getting string attribute '{ATTR}' from '{INTERFACE}': {ERROR}",
94             "ATTR", name, "INTERFACE", dBusMap->interface, "ERROR", e);
95         return stringInfo.defString;
96     }
97 }
98 
99 void BIOSStringAttribute::constructEntry(
100     const BIOSStringTable& stringTable, Table& attrTable, Table& attrValueTable,
101     std::optional<std::variant<int64_t, std::string>> optAttributeValue)
102 {
103     pldm_bios_table_attr_entry_string_info info = {
104         stringTable.findHandle(name), readOnly,
105         stringInfo.stringType,        stringInfo.minLength,
106         stringInfo.maxLength,         stringInfo.defLength,
107         stringInfo.defString.data(),
108     };
109 
110     auto attrTableEntry = table::attribute::constructStringEntry(attrTable,
111                                                                  &info);
112     auto [attrHandle, attrType,
113           _] = table::attribute::decodeHeader(attrTableEntry);
114 
115     std::string currStr{};
116     if (optAttributeValue.has_value())
117     {
118         auto attributeValue = optAttributeValue.value();
119         if (attributeValue.index() == 1)
120         {
121             currStr = std::get<std::string>(attributeValue);
122         }
123         else
124         {
125             currStr = getAttrValue();
126         }
127     }
128     else
129     {
130         currStr = getAttrValue();
131     }
132 
133     table::attribute_value::constructStringEntry(attrValueTable, attrHandle,
134                                                  attrType, currStr);
135 }
136 
137 int BIOSStringAttribute::updateAttrVal(Table& newValue, uint16_t attrHdl,
138                                        uint8_t attrType,
139                                        const PropertyValue& newPropVal)
140 {
141     try
142     {
143         const auto& newStringValue = std::get<std::string>(newPropVal);
144         table::attribute_value::constructStringEntry(newValue, attrHdl,
145                                                      attrType, newStringValue);
146     }
147     catch (const std::bad_variant_access& e)
148     {
149         error("invalid value passed for the property, error: {ERR_EXCEP}",
150               "ERR_EXCEP", e.what());
151         return PLDM_ERROR;
152     }
153     return PLDM_SUCCESS;
154 }
155 
156 void BIOSStringAttribute::generateAttributeEntry(
157     const std::variant<int64_t, std::string>& attributevalue,
158     Table& attrValueEntry)
159 {
160     std::string value = std::get<std::string>(attributevalue);
161     uint16_t len = value.size();
162 
163     attrValueEntry.resize(sizeof(pldm_bios_attr_val_table_entry) +
164                           sizeof(uint16_t) + len - 1);
165 
166     auto entry = reinterpret_cast<pldm_bios_attr_val_table_entry*>(
167         attrValueEntry.data());
168 
169     entry->attr_type = 1;
170     memcpy(entry->value, &len, sizeof(uint16_t));
171     memcpy(entry->value + sizeof(uint16_t), value.c_str(), value.size());
172 }
173 
174 } // namespace bios
175 } // namespace responder
176 } // namespace pldm
177