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68 | daniel-mar | 1 | unit NetworkUtils; |
2 | |||
3 | interface |
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4 | |||
5 | uses |
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6 | Windows, SysUtils, Classes; |
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7 | |||
8 | function GetLocalIPAddressList(outsl: TStrings): DWORD; |
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9 | function GetLocalMACAddressList(outSL: TStrings): DWORD; |
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10 | function GetDHCPIPAddressList(outsl: TStrings): DWORD; |
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11 | function GetGatewayIPAddressList(outsl: TStrings): DWORD; |
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12 | function GetMACAddress(const IPAddress: string; var outAddress: string): DWORD; |
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13 | function FormatMAC(s: string): string; |
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14 | |||
15 | implementation |
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16 | |||
17 | uses |
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18 | iphlp, WinSock; |
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19 | |||
20 | // TODO: Replace GetAdaptersInfo()? A comment at MSDN states that there might be problems with IPv6 |
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21 | // "GetAdaptersInfo returns ERROR_NO_DATA if there are only IPv6 interfaces |
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22 | // configured on system. In that case GetAdapterAddresses has to be used!" |
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23 | |||
24 | function GetLocalIPAddressList(outsl: TStrings): DWORD; |
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25 | var |
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26 | pAdapterInfo: PIP_ADAPTER_INFO; |
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27 | addr: string; |
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28 | addrStr: IP_ADDR_STRING; |
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29 | BufLen: Cardinal; |
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30 | begin |
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31 | BufLen := SizeOf(IP_ADAPTER_INFO); |
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32 | GetAdaptersInfo(nil, @BufLen); |
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33 | pAdapterInfo := AllocMem(BufLen); |
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34 | try |
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35 | Result := GetAdaptersInfo(pAdapterInfo, @BufLen); |
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36 | if not Result = ERROR_SUCCESS then Exit; |
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37 | while pAdapterInfo <> nil do |
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38 | begin |
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39 | addrStr := pAdapterInfo^.IpAddressList; |
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40 | repeat |
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41 | addr := addrStr.IpAddress.S; |
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42 | if (addr <> '') and (outsl.IndexOf(addr) = -1) then |
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43 | outsl.Add(addr); |
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44 | if addrStr.Next = nil then break; |
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45 | AddrStr := addrStr.Next^; |
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46 | until false; |
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47 | pAdapterInfo := pAdapterInfo^.next; |
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48 | end; |
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49 | finally |
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50 | Freemem(pAdapterInfo); |
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51 | end; |
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52 | end; |
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53 | |||
54 | function GetDHCPIPAddressList(outsl: TStrings): DWORD; |
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55 | var |
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56 | pAdapterInfo: PIP_ADAPTER_INFO; |
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57 | addr: string; |
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58 | addrStr: IP_ADDR_STRING; |
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59 | BufLen: Cardinal; |
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60 | begin |
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61 | BufLen := SizeOf(IP_ADAPTER_INFO); |
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62 | GetAdaptersInfo(nil, @BufLen); |
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63 | pAdapterInfo := AllocMem(BufLen); |
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64 | try |
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65 | Result := GetAdaptersInfo(pAdapterInfo, @BufLen); |
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66 | if not Result = ERROR_SUCCESS then Exit; |
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67 | while pAdapterInfo <> nil do |
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68 | begin |
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69 | addrStr := pAdapterInfo^.DhcpServer; |
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70 | repeat |
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71 | addr := addrStr.IpAddress.S; |
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72 | if (addr <> '') and (outsl.IndexOf(addr) = -1) then |
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73 | outsl.Add(addr); |
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74 | if addrStr.Next = nil then break; |
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75 | AddrStr := addrStr.Next^; |
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76 | until false; |
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77 | pAdapterInfo := pAdapterInfo^.next; |
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78 | end; |
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79 | finally |
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80 | Freemem(pAdapterInfo); |
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81 | end; |
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82 | end; |
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83 | |||
84 | function GetGatewayIPAddressList(outsl: TStrings): DWORD; |
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85 | var |
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86 | pAdapterInfo: PIP_ADAPTER_INFO; |
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87 | addr: string; |
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88 | addrStr: IP_ADDR_STRING; |
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89 | BufLen: Cardinal; |
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90 | begin |
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91 | BufLen := SizeOf(IP_ADAPTER_INFO); |
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92 | GetAdaptersInfo(nil, @BufLen); |
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93 | pAdapterInfo := AllocMem(BufLen); |
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94 | try |
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95 | Result := GetAdaptersInfo(pAdapterInfo, @BufLen); |
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96 | if not Result = ERROR_SUCCESS then Exit; |
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97 | while pAdapterInfo <> nil do |
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98 | begin |
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99 | addrStr := pAdapterInfo^.GatewayList; |
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100 | repeat |
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101 | addr := addrStr.IpAddress.S; |
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102 | if (addr <> '') and (outsl.IndexOf(addr) = -1) then |
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103 | outsl.Add(addr); |
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104 | if addrStr.Next = nil then break; |
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105 | AddrStr := addrStr.Next^; |
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106 | until false; |
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107 | pAdapterInfo := pAdapterInfo^.next; |
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108 | end; |
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109 | finally |
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110 | Freemem(pAdapterInfo); |
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111 | end; |
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112 | end; |
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113 | |||
114 | function GetMACAddress(const IPAddress: string; var outAddress: string): DWORD; |
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115 | // http://stackoverflow.com/questions/4550672/delphi-get-mac-of-router |
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116 | var |
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117 | MacAddr : Array[0..5] of Byte; |
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118 | DestIP : ULONG; |
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119 | PhyAddrLen : ULONG; |
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120 | WSAData : TWSAData; |
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121 | j: integer; |
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122 | begin |
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123 | outAddress := ''; |
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124 | WSAStartup($0101, WSAData); |
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125 | try |
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126 | ZeroMemory(@MacAddr, SizeOf(MacAddr)); |
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127 | DestIP := inet_addr(PAnsiChar(IPAddress)); |
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128 | PhyAddrLen := SizeOf(MacAddr); // TODO: more ? |
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129 | Result := SendArp(DestIP, 0, @MacAddr, @PhyAddrLen); |
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130 | if Result = S_OK then |
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131 | begin |
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132 | outAddress := ''; |
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133 | for j := 0 to PhyAddrLen-1 do |
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134 | begin |
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135 | outAddress := outAddress + format('%.2x', [MacAddr[j]]); |
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136 | end; |
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137 | outAddress := FormatMAC(outAddress); |
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138 | end; |
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139 | finally |
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140 | WSACleanup; |
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141 | end; |
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142 | end; |
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143 | |||
144 | function GetLocalMACAddressList(outSL: TStrings): DWORD; |
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145 | const |
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146 | _MAX_ROWS_ = 100; |
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147 | type |
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148 | _IfTable = Record |
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149 | nRows: LongInt; |
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150 | ifRow: Array[1.._MAX_ROWS_] of MIB_IFROW; |
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151 | end; |
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152 | var |
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153 | pIfTable: ^_IfTable; |
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154 | TableSize: LongInt; |
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155 | tmp: String; |
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156 | i, j: Integer; |
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157 | begin |
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158 | pIfTable := nil; |
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159 | try |
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160 | // First: just get the buffer size. |
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161 | // TableSize returns the size needed. |
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162 | TableSize := 0; // Set to zero so the GetIfTabel function |
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163 | // won't try to fill the buffer yet, |
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164 | // but only return the actual size it needs. |
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165 | GetIfTable(pIfTable, TableSize, 1); |
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166 | if (TableSize < SizeOf(MIB_IFROW)+SizeOf(LongInt)) then |
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167 | begin |
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168 | Result := ERROR_NO_DATA; |
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169 | Exit; // less than 1 table entry?! |
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170 | end; |
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171 | |||
172 | // Second: |
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173 | // allocate memory for the buffer and retrieve the |
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174 | // entire table. |
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175 | GetMem(pIfTable, TableSize); |
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176 | Result := GetIfTable(pIfTable, TableSize, 1); |
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177 | if Result <> NO_ERROR then Exit; |
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178 | |||
179 | // Read the ETHERNET addresses. |
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180 | for i := 1 to pIfTable^.nRows do |
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181 | begin |
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182 | //if pIfTable^.ifRow[i].dwType=MIB_IF_TYPE_ETHERNET then |
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183 | begin |
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184 | tmp := ''; |
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185 | for j := 0 to pIfTable^.ifRow[i].dwPhysAddrLen-1 do |
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186 | begin |
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187 | tmp := tmp + format('%.2x', [pIfTable^.ifRow[i].bPhysAddr[j]]); |
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188 | end; |
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189 | tmp := FormatMAC(tmp); |
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190 | if (tmp <> '') and (outSL.IndexOf(tmp) = -1) then |
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191 | outSL.Add(tmp); |
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192 | end; |
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193 | end; |
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194 | finally |
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195 | if Assigned(pIfTable) then FreeMem(pIfTable, TableSize); |
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196 | end; |
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197 | end; |
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198 | |||
199 | function FormatMAC(s: string): string; |
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200 | var |
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201 | m: integer; |
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202 | begin |
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203 | result := ''; |
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204 | m := 1; |
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205 | s := UpperCase(s); |
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206 | repeat |
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207 | if m > 1 then result := result + '-'; |
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208 | result := result + Copy(s, m, 2); |
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209 | inc(m, 2); |
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210 | until m > Length(s); |
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211 | end; |
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212 | |||
213 | end. |