源码（1）：
Private Sub Command1_Click()
If Text1.Text = “” Then
MsgBox “请输入域名”
End If
If Text2.Text = “” Then
MsgBox “请输入用户名”
End If
If Text3.Text = “” Then
MsgBox “请输入密码”
Else
MsgBox “如果您输入正确,那么您成功了”
End If
Timer1.Enabled = True
Web.Navigate (“http://www.ip138.com/ip2city.asp“)
Web.Navigate “http://” & Text2.Text & “:” & Text3.Text & “@members.3322.org/dyndns/update?system=dyndns&hostname=” & Text1.Text & “&myip=” & IP & “&wildcard=OFF”
End Sub
Private Sub WebBrowser_DocumentComplete(ByVal pDisp As Object, URL As Variant)
Set webdoc = WebBrowser.Document
y = webdoc.All(0).outerhtml
Dim sTemp As String
Dim a, b As Integer
sTemp = y
a = InStrRev(sTemp, “[") + 1
b = InStrRev(sTemp, "]“)
IP = Mid(sTemp, a, b – a)
End Sub
Private Sub Command2_Click()
End
End Sub
源码（2）：
模块：
‘Base64编码函数：Base64Encode
‘Instr1 编码前字符串
‘Outstr1 编码后字符串
Public Function Base64Encode(InStr1 As String) As String
Dim mInByte(3) As Byte, mOutByte(4) As Byte
Dim myByte As Byte
Dim i As Integer, LenArray As Integer, j As Integer
Dim myBArray() As Byte
Dim OutStr1 As String
myBArray() = StrConv(InStr1, vbFromUnicode)
LenArray = UBound(myBArray) + 1
For i = 0 To LenArray Step 3
If LenArray – i = 0 Then
Exit For
End If
If LenArray – i = 2 Then
mInByte(0) = myBArray(i)
mInByte(1) = myBArray(i + 1)
Base64EncodeByte mInByte, mOutByte, 2
ElseIf LenArray – i = 1 Then
mInByte(0) = myBArray(i)
Base64EncodeByte mInByte, mOutByte, 1
Else
mInByte(0) = myBArray(i)
mInByte(1) = myBArray(i + 1)
mInByte(2) = myBArray(i + 2)
Base64EncodeByte mInByte, mOutByte, 3
End If
For j = 0 To 3
OutStr1 = OutStr1 & Chr(mOutByte(j))
Next j
Next i
Base64Encode = OutStr1
End Function
Private Sub Base64EncodeByte(mInByte() As Byte, mOutByte() As Byte, Num As Integer)
Dim tByte As Byte
Dim i As Integer
If Num = 1 Then
mInByte(1) = 0
mInByte(2) = 0
ElseIf Num = 2 Then
mInByte(2) = 0
End If
tByte = mInByte(0) And &HFC
mOutByte(0) = tByte / 4
tByte = ((mInByte(0) And &H3) * 16) + (mInByte(1) And &HF0) / 16
mOutByte(1) = tByte
tByte = ((mInByte(1) And &HF) * 4) + ((mInByte(2) And &HC0) / 64)
mOutByte(2) = tByte
tByte = (mInByte(2) And &H3F)
mOutByte(3) = tByte
For i = 0 To 3
If mOutByte(i) >= 0 And mOutByte(i) <= 25 Then
mOutByte(i) = mOutByte(i) + Asc(“A”)
ElseIf mOutByte(i) >= 26 And mOutByte(i) <= 51 Then
mOutByte(i) = mOutByte(i) – 26 + Asc(“a”)
ElseIf mOutByte(i) >= 52 And mOutByte(i) <= 61 Then
mOutByte(i) = mOutByte(i) – 52 + Asc(“0″)
ElseIf mOutByte(i) = 62 Then
mOutByte(i) = Asc(“+”)
Else
mOutByte(i) = Asc(“/”)
End If
Next i
If Num = 1 Then
mOutByte(2) = Asc(“=”)
mOutByte(3) = Asc(“=”)
ElseIf Num = 2 Then
mOutByte(3) = Asc(“=”)
End If
End Sub
Public Function Base64Decode(InStr1 As String) As String
Dim mInByte(4) As Byte, mOutByte(3) As Byte
Dim i As Integer, LenArray As Integer, j As Integer
Dim myBArray() As Byte
Dim OutStr1 As String
Dim tmpArray() As Byte
myBArray() = StrConv(InStr1, vbFromUnicode)
LenArray = UBound(myBArray)
ReDim tmpArray(((LenArray + 1) / 4) * 3)
j = 0
For i = 0 To LenArray Step 4
If LenArray – i = 0 Then
Exit For
Else
mInByte(0) = myBArray(i)
mInByte(1) = myBArray(i + 1)
mInByte(2) = myBArray(i + 2)
mInByte(3) = myBArray(i + 3)
Base64DecodeByte mInByte, mOutByte, 4
End If
tmpArray(j * 3) = mOutByte(0)
tmpArray(j * 3 + 1) = mOutByte(1)
tmpArray(j * 3 + 2) = mOutByte(2)
j = j + 1
Next i
Base64Decode = BinaryToString(tmpArray)
End Function
Private Sub Base64DecodeByte(mInByte() As Byte, mOutByte() As Byte, ByteNum As Integer)
Dim tByte As Byte
Dim i As Integer
ByteNum = 0
For i = 0 To 3
If mInByte(i) >= Asc(“A”) And mInByte(i) <= Asc(“Z”) Then
mInByte(i) = mInByte(i) – Asc(“A”)
 
; ElseIf mInByte(i) >= Asc(“a”) And mInByte(i) <= Asc(“z”) Then
mInByte(i) = mInByte(i) – Asc(“a”) + 26
ElseIf mInByte(i) >= Asc(“0″) And mInByte(i) <= Asc(“9″) Then
mInByte(i) = mInByte(i) – Asc(“0″) + 52
ElseIf mInByte(i) = Asc(“+”) Then
mInByte(i) = 62
ElseIf mInByte(i) = Asc(“/”) Then
mInByte(i) = 63
Else ‘”=”
ByteNum = ByteNum + 1
mInByte(i) = 0
End If
Next i
‘取前六位
tByte = (mInByte(0) And &H3F) * 4 + (mInByte(1) And &H30) / 16
’0的六位和1的前两位
mOutByte(0) = tByte
tByte = (mInByte(1) And &HF) * 16 + (mInByte(2) And &H3C) / 4
’1的后四位和2的前四位
mOutByte(1) = tByte
tByte = (mInByte(2) And &H3) * 64 + (mInByte(3) And &H3F)
mOutByte(2) = tByte
’2的后两位和3的六位
End Sub
Private Function BinaryToString(ByVal BinaryStr As Variant) As String ‘二进制转换为字符串
Dim lnglen As Long
Dim tmpBin As Variant
Dim strC As String
Dim skipflag As Long
Dim i As Long
skipflag = 0
strC = “”
If Not IsNull(BinaryStr) Then
lnglen = LenB(BinaryStr)
For i = 1 To lnglen
If skipflag = 0 Then
tmpBin = MidB(BinaryStr, i, 1)
If AscB(tmpBin) > 127 Then
strC = strC & Chr(AscW(MidB(BinaryStr, i + 1, 1) & tmpBin))
skipflag = 1
Else
strC = strC & Chr(AscB(tmpBin))
End If
Else
skipflag = 0
End If
Next
End If
BinaryToString = strC
End Function
Private Function StringToBinary(ByVal VarString As String) As Variant ‘字符串转成二进制
Dim strBin As Variant
Dim varchar As Variant
Dim varasc As Long
Dim varlow, varhigh
Dim i As Long
strBin = “”
For i = 1 To Len(VarString)
varchar = Mid(VarString, i, 1)
varasc = Asc(varchar)
If varasc < 0 Then
varasc = varasc + 65535
End If
If varasc > 255 Then
varlow = Left(Hex(Asc(varchar)), 2)
varhigh = Right(Hex(Asc(varchar)), 2)
strBin = strBin & ChrB(“&H” & varlow) & ChrB(“&H” & varhigh)
Else
strBin = strBin & ChrB(AscB(varchar))
End If
Next
StringToBinary = strBin
End Function
Private Sub Command1_Click()
If Text1 = “” Or Text2 = “” Or Text3 = “” Or Text4 = “” Then
MsgBox “请输入更新信息”, vbInformation, “提示”
Exit Sub
End If
Winsock1.Close
Winsock1.Connect “members.3322.org”, 80
End Sub
Private Sub Winsock1_Connect()
Dim q As String
Dim base64_u_p As String
base64_u_p = Base64Encode(Text2.Text + “:” + Text3.Text)
q = “GET /dyndns/update?system=dyndns&hostname=” + Text1.Text + “&myip=” + Text4.Text + “&wildcard=OFF HTTP/1.1″ + vbCrLf
q = q + “User -Agent: xicao” + vbCrLf
q = q + “Host: members.3322.org” + vbCrLf
q = q + “Connection: Keep -Alive” + vbCrLf
q = q + “Authorization: Basic ” + base64_u_p + vbCrLf + vbCrLf
List1.AddItem “与服务器连接成功”
Winsock2.SendData q
End Sub
