1 | /** @file
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2 |
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3 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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4 | SPDX-License-Identifier: BSD-2-Clause-Patent
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5 |
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6 | **/
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7 |
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8 |
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9 | #include "Dhcp4Impl.h"
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10 |
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11 | //
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12 | // EFI Component Name Functions
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13 | //
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14 | /**
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15 | Retrieves a Unicode string that is the user readable name of the driver.
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16 |
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17 | This function retrieves the user readable name of a driver in the form of a
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18 | Unicode string. If the driver specified by This has a user readable name in
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19 | the language specified by Language, then a pointer to the driver name is
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20 | returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
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21 | by This does not support the language specified by Language,
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22 | then EFI_UNSUPPORTED is returned.
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23 |
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24 | @param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
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25 | EFI_COMPONENT_NAME_PROTOCOL instance.
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26 |
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27 | @param[in] Language A pointer to a Null-terminated ASCII string
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28 | array indicating the language. This is the
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29 | language of the driver name that the caller is
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30 | requesting, and it must match one of the
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31 | languages specified in SupportedLanguages. The
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32 | number of languages supported by a driver is up
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33 | to the driver writer. Language is specified
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34 | in RFC 4646 or ISO 639-2 language code format.
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35 |
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36 | @param[out] DriverName A pointer to the Unicode string to return.
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37 | This Unicode string is the name of the
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38 | driver specified by This in the language
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39 | specified by Language.
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40 |
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41 | @retval EFI_SUCCESS The Unicode string for the Driver specified by
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42 | This and the language specified by Language was
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43 | returned in DriverName.
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44 |
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45 | @retval EFI_INVALID_PARAMETER Language is NULL.
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46 |
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47 | @retval EFI_INVALID_PARAMETER DriverName is NULL.
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48 |
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49 | @retval EFI_UNSUPPORTED The driver specified by This does not support
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50 | the language specified by Language.
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51 |
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52 | **/
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53 | EFI_STATUS
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54 | EFIAPI
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55 | DhcpComponentNameGetDriverName (
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56 | IN EFI_COMPONENT_NAME_PROTOCOL *This,
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57 | IN CHAR8 *Language,
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58 | OUT CHAR16 **DriverName
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59 | );
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60 |
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61 |
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62 | /**
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63 | Retrieves a Unicode string that is the user readable name of the controller
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64 | that is being managed by a driver.
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65 |
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66 | This function retrieves the user readable name of the controller specified by
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67 | ControllerHandle and ChildHandle in the form of a Unicode string. If the
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68 | driver specified by This has a user readable name in the language specified by
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69 | Language, then a pointer to the controller name is returned in ControllerName,
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70 | and EFI_SUCCESS is returned. If the driver specified by This is not currently
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71 | managing the controller specified by ControllerHandle and ChildHandle,
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72 | then EFI_UNSUPPORTED is returned. If the driver specified by This does not
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73 | support the language specified by Language, then EFI_UNSUPPORTED is returned.
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74 |
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75 | @param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
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76 | EFI_COMPONENT_NAME_PROTOCOL instance.
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77 |
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78 | @param[in] ControllerHandle The handle of a controller that the driver
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79 | specified by This is managing. This handle
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80 | specifies the controller whose name is to be
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81 | returned.
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82 |
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83 | @param[in] ChildHandle The handle of the child controller to retrieve
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84 | the name of. This is an optional parameter that
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85 | may be NULL. It will be NULL for device
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86 | drivers. It will also be NULL for a bus drivers
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87 | that wish to retrieve the name of the bus
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88 | controller. It will not be NULL for a bus
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89 | driver that wishes to retrieve the name of a
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90 | child controller.
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91 |
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92 | @param[in] Language A pointer to a Null-terminated ASCII string
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93 | array indicating the language. This is the
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94 | language of the driver name that the caller is
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95 | requesting, and it must match one of the
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96 | languages specified in SupportedLanguages. The
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97 | number of languages supported by a driver is up
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98 | to the driver writer. Language is specified in
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99 | RFC 4646 or ISO 639-2 language code format.
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100 |
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101 | @param[out] ControllerName A pointer to the Unicode string to return.
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102 | This Unicode string is the name of the
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103 | controller specified by ControllerHandle and
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104 | ChildHandle in the language specified by
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105 | Language from the point of view of the driver
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106 | specified by This.
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107 |
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108 | @retval EFI_SUCCESS The Unicode string for the user readable name in
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109 | the language specified by Language for the
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110 | driver specified by This was returned in
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111 | DriverName.
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112 |
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113 | @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
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114 |
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115 | @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
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116 | EFI_HANDLE.
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117 |
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118 | @retval EFI_INVALID_PARAMETER Language is NULL.
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119 |
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120 | @retval EFI_INVALID_PARAMETER ControllerName is NULL.
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121 |
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122 | @retval EFI_UNSUPPORTED The driver specified by This is not currently
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123 | managing the controller specified by
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124 | ControllerHandle and ChildHandle.
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125 |
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126 | @retval EFI_UNSUPPORTED The driver specified by This does not support
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127 | the language specified by Language.
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128 |
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129 | **/
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130 | EFI_STATUS
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131 | EFIAPI
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132 | DhcpComponentNameGetControllerName (
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133 | IN EFI_COMPONENT_NAME_PROTOCOL *This,
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134 | IN EFI_HANDLE ControllerHandle,
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135 | IN EFI_HANDLE ChildHandle OPTIONAL,
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136 | IN CHAR8 *Language,
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137 | OUT CHAR16 **ControllerName
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138 | );
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139 |
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140 |
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141 | //
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142 | // EFI Component Name Protocol
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143 | //
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144 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gDhcp4ComponentName = {
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145 | DhcpComponentNameGetDriverName,
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146 | DhcpComponentNameGetControllerName,
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147 | "eng"
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148 | };
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149 |
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150 | //
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151 | // EFI Component Name 2 Protocol
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152 | //
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153 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gDhcp4ComponentName2 = {
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154 | (EFI_COMPONENT_NAME2_GET_DRIVER_NAME) DhcpComponentNameGetDriverName,
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155 | (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME) DhcpComponentNameGetControllerName,
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156 | "en"
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157 | };
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158 |
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159 |
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160 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE mDhcpDriverNameTable[] = {
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161 | {
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162 | "eng;en",
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163 | L"DHCP Protocol Driver"
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164 | },
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165 | {
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166 | NULL,
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167 | NULL
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168 | }
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169 | };
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170 |
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171 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE *gDhcpControllerNameTable = NULL;
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172 |
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173 | CHAR16 *mDhcp4ControllerName[] = {
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174 | L"DHCPv4 (State=0, Stopped)",
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175 | L"DHCPv4 (State=1, Init)",
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176 | L"DHCPv4 (State=2, Selecting)",
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177 | L"DHCPv4 (State=3, Requesting)",
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178 | L"DHCPv4 (State=4, Bound)",
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179 | L"DHCPv4 (State=5, Renewing)",
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180 | L"DHCPv4 (State=6, Rebinding)",
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181 | L"DHCPv4 (State=7, InitReboot)",
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182 | L"DHCPv4 (State=8, Rebooting)"
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183 | };
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184 |
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185 | /**
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186 | Retrieves a Unicode string that is the user readable name of the driver.
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187 |
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188 | This function retrieves the user readable name of a driver in the form of a
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189 | Unicode string. If the driver specified by This has a user readable name in
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190 | the language specified by Language, then a pointer to the driver name is
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191 | returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
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192 | by This does not support the language specified by Language,
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193 | then EFI_UNSUPPORTED is returned.
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194 |
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195 | @param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
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196 | EFI_COMPONENT_NAME_PROTOCOL instance.
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197 |
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198 | @param[in] Language A pointer to a Null-terminated ASCII string
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199 | array indicating the language. This is the
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200 | language of the driver name that the caller is
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201 | requesting, and it must match one of the
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202 | languages specified in SupportedLanguages. The
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203 | number of languages supported by a driver is up
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204 | to the driver writer. Language is specified
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205 | in RFC 4646 or ISO 639-2 language code format.
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206 |
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207 | @param[out] DriverName A pointer to the Unicode string to return.
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208 | This Unicode string is the name of the
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209 | driver specified by This in the language
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210 | specified by Language.
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211 |
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212 | @retval EFI_SUCCESS The Unicode string for the Driver specified by
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213 | This and the language specified by Language was
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214 | returned in DriverName.
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215 |
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216 | @retval EFI_INVALID_PARAMETER Language is NULL.
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217 |
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218 | @retval EFI_INVALID_PARAMETER DriverName is NULL.
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219 |
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220 | @retval EFI_UNSUPPORTED The driver specified by This does not support
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221 | the language specified by Language.
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222 |
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223 | **/
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224 | EFI_STATUS
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225 | EFIAPI
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226 | DhcpComponentNameGetDriverName (
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227 | IN EFI_COMPONENT_NAME_PROTOCOL *This,
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228 | IN CHAR8 *Language,
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229 | OUT CHAR16 **DriverName
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230 | )
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231 | {
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232 | return LookupUnicodeString2 (
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233 | Language,
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234 | This->SupportedLanguages,
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235 | mDhcpDriverNameTable,
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236 | DriverName,
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237 | (BOOLEAN)(This == &gDhcp4ComponentName)
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238 | );
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239 | }
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240 |
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241 | /**
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242 | Update the component name for the Dhcp4 child handle.
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243 |
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244 | @param Dhcp4[in] A pointer to the EFI_DHCP4_PROTOCOL.
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245 |
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246 |
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247 | @retval EFI_SUCCESS Update the ControllerNameTable of this instance successfully.
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248 | @retval EFI_INVALID_PARAMETER The input parameter is invalid.
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249 | @retval EFI_DEVICE_ERROR DHCP is in unknown state.
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250 |
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251 | **/
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252 | EFI_STATUS
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253 | UpdateName (
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254 | IN EFI_DHCP4_PROTOCOL *Dhcp4
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255 | )
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256 | {
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257 | EFI_STATUS Status;
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258 | EFI_DHCP4_MODE_DATA Dhcp4ModeData;
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259 |
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260 | if (Dhcp4 == NULL) {
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261 | return EFI_INVALID_PARAMETER;
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262 | }
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263 |
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264 | //
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265 | // Format the child name into the string buffer.
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266 | //
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267 | Status = Dhcp4->GetModeData (Dhcp4, &Dhcp4ModeData);
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268 | if (EFI_ERROR (Status)) {
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269 | return Status;
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270 | }
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271 |
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272 | if (gDhcpControllerNameTable != NULL) {
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273 | FreeUnicodeStringTable (gDhcpControllerNameTable);
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274 | gDhcpControllerNameTable = NULL;
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275 | }
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276 |
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277 | if (Dhcp4ModeData.State > Dhcp4Rebooting) {
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278 | return EFI_DEVICE_ERROR;
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279 | }
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280 |
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281 | Status = AddUnicodeString2 (
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282 | "eng",
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283 | gDhcp4ComponentName.SupportedLanguages,
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284 | &gDhcpControllerNameTable,
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285 | mDhcp4ControllerName[Dhcp4ModeData.State],
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286 | TRUE
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287 | );
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288 | if (EFI_ERROR (Status)) {
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289 | return Status;
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290 | }
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291 |
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292 | return AddUnicodeString2 (
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293 | "en",
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294 | gDhcp4ComponentName2.SupportedLanguages,
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295 | &gDhcpControllerNameTable,
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296 | mDhcp4ControllerName[Dhcp4ModeData.State],
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297 | FALSE
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298 | );
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299 | }
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300 |
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301 | /**
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302 | Retrieves a Unicode string that is the user readable name of the controller
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303 | that is being managed by a driver.
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304 |
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305 | This function retrieves the user readable name of the controller specified by
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306 | ControllerHandle and ChildHandle in the form of a Unicode string. If the
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307 | driver specified by This has a user readable name in the language specified by
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308 | Language, then a pointer to the controller name is returned in ControllerName,
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309 | and EFI_SUCCESS is returned. If the driver specified by This is not currently
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310 | managing the controller specified by ControllerHandle and ChildHandle,
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311 | then EFI_UNSUPPORTED is returned. If the driver specified by This does not
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312 | support the language specified by Language, then EFI_UNSUPPORTED is returned.
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313 |
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314 | @param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
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315 | EFI_COMPONENT_NAME_PROTOCOL instance.
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316 |
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317 | @param[in] ControllerHandle The handle of a controller that the driver
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318 | specified by This is managing. This handle
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319 | specifies the controller whose name is to be
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320 | returned.
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321 |
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322 | @param[in] ChildHandle The handle of the child controller to retrieve
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323 | the name of. This is an optional parameter that
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324 | may be NULL. It will be NULL for device
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325 | drivers. It will also be NULL for a bus drivers
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326 | that wish to retrieve the name of the bus
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327 | controller. It will not be NULL for a bus
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328 | driver that wishes to retrieve the name of a
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329 | child controller.
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330 |
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331 | @param[in] Language A pointer to a Null-terminated ASCII string
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332 | array indicating the language. This is the
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333 | language of the driver name that the caller is
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334 | requesting, and it must match one of the
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335 | languages specified in SupportedLanguages. The
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336 | number of languages supported by a driver is up
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337 | to the driver writer. Language is specified in
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338 | RFC 4646 or ISO 639-2 language code format.
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339 |
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340 | @param[out] ControllerName A pointer to the Unicode string to return.
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341 | This Unicode string is the name of the
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342 | controller specified by ControllerHandle and
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343 | ChildHandle in the language specified by
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344 | Language from the point of view of the driver
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345 | specified by This.
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346 |
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347 | @retval EFI_SUCCESS The Unicode string for the user readable name in
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348 | the language specified by Language for the
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349 | driver specified by This was returned in
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350 | DriverName.
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351 |
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352 | @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
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353 |
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354 | @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
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355 | EFI_HANDLE.
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356 |
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357 | @retval EFI_INVALID_PARAMETER Language is NULL.
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358 |
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359 | @retval EFI_INVALID_PARAMETER ControllerName is NULL.
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360 |
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361 | @retval EFI_UNSUPPORTED The driver specified by This is not currently
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362 | managing the controller specified by
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363 | ControllerHandle and ChildHandle.
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364 |
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365 | @retval EFI_UNSUPPORTED The driver specified by This does not support
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366 | the language specified by Language.
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367 |
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368 | **/
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369 | EFI_STATUS
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370 | EFIAPI
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371 | DhcpComponentNameGetControllerName (
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372 | IN EFI_COMPONENT_NAME_PROTOCOL *This,
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373 | IN EFI_HANDLE ControllerHandle,
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374 | IN EFI_HANDLE ChildHandle OPTIONAL,
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375 | IN CHAR8 *Language,
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376 | OUT CHAR16 **ControllerName
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377 | )
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378 | {
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379 | EFI_STATUS Status;
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380 | EFI_DHCP4_PROTOCOL *Dhcp4;
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381 |
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382 | //
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383 | // Only provide names for child handles.
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384 | //
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385 | if (ChildHandle == NULL) {
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386 | return EFI_UNSUPPORTED;
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387 | }
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388 |
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389 | //
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390 | // Make sure this driver produced ChildHandle
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391 | //
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392 | Status = EfiTestChildHandle (
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393 | ControllerHandle,
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394 | ChildHandle,
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395 | &gEfiUdp4ProtocolGuid
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396 | );
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397 | if (EFI_ERROR (Status)) {
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398 | return Status;
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399 | }
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400 |
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401 | //
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402 | // Retrieve an instance of a produced protocol from ChildHandle
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403 | //
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404 | Status = gBS->OpenProtocol (
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405 | ChildHandle,
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406 | &gEfiDhcp4ProtocolGuid,
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407 | (VOID **)&Dhcp4,
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408 | NULL,
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409 | NULL,
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410 | EFI_OPEN_PROTOCOL_GET_PROTOCOL
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411 | );
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412 | if (EFI_ERROR (Status)) {
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413 | return Status;
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414 | }
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415 |
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416 | //
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417 | // Update the component name for this child handle.
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418 | //
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419 | Status = UpdateName (Dhcp4);
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420 | if (EFI_ERROR (Status)) {
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421 | return Status;
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422 | }
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423 |
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424 | return LookupUnicodeString2 (
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425 | Language,
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426 | This->SupportedLanguages,
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427 | gDhcpControllerNameTable,
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428 | ControllerName,
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429 | (BOOLEAN)(This == &gDhcp4ComponentName)
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430 | );
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431 | }
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