VB SMTP用户验证发送mail

2024-01-10 02:11•css•阅读 681

转自 http://www.jishuzh.com/program/vb-smtp%E7%94%A8%E6%88%B7%E9%AA%8C%E8%AF%81%E5%8F%91%E9%80%81mail.html

这几天技术宅在捣鼓怎么发送“垃圾邮件”，呵呵其实是想做一个群发邮件的小软件，希望通过vb来应用smtp进行发信息。怎耐自己功夫其实还不到家，折腾了好久也没有成功。倒是在这个过程中学习到了一些东西，也找到了一些比较不错的源码，有很多都是花费了九牛二虎之力才找到的，不能说不辛苦。今天的，技术宅给大家分享一份源码：VB SMTP用户验证发送mail。

这封源码技术宅因为后来实在弄到焦头烂额了，没有仔细研究，不过他的注释都是很清楚的，肯定有值得大家学习的地方。

Option Explicit
Private WithEvents Sock As MSWinsockLib.Winsock
Private StrCharset As String                    '语言编码
Private StrContentType As String                '邮件编码
Private StrServerAddress As String              'SMTP服务器地址
Private StrMailServerUserName As String        'SMTP验证用户名
Private StrMailServerPassword As String        'SMTP验证密码
Private StrFrom As String                      '发信人地址
Private StrFromName As String                  '发信人姓名
Private StrSubject As String                    '邮件标题
Private StrBody As String                      '邮件内容
Private StrRecipient As String                  '收件人地址
Private LngPriority As Long                    '邮件级别
Private LngPort As Long                        'SMTP服务器端口
Private ErrInt As Integer
Private ErrStr As String
'语言编码
Public Property Let Charset(ByVal Str As String)
    StrCharset = Str
End Property
'邮件编码
Public Property Let ContentType(ByVal Str As String)
    StrContentType = Str
End Property
'SMTP服务器地址
Public Property Let ServerAddress(ByVal Str As String)
    StrServerAddress = Str
End Property
'SMTP服务器端口
Public Property Let Port(ByVal II As Long)
    LngPort = II
End Property
'SMTP验证用户名
Public Property Let MailServerUserName(ByVal Str As String)
    StrMailServerUserName = Base64(Trim(Str))
End Property
'SMTP验证密码
Public Property Let MailServerPassword(ByVal Str As String)
    StrMailServerPassword = Base64(Str)
End Property
'发信人地址
Public Property Let From(ByVal Str As String)
    StrFrom = Str
End Property
'发信人姓名
Public Property Let FromName(ByVal Str As String)
    StrFromName = Str
End Property
'邮件标题
Public Property Let Subject(ByVal Str As String)
    StrSubject = Str
End Property
'收件人地址,可以多个收件人
Public Sub AddRecipient(ByVal Str As String)
    StrRecipient = Str
End Sub
'邮件内容
Public Property Let Body(ByVal Str As String)
    StrBody = Str
End Property
'邮件级别
Public Property Let Priority(ByVal II As Long)
    LngPriority = II
End Property
'应该在执行过可能产生错误的函数后及时调用此函数，获取最新的错误信息。
Public Property Get OnErr() As Integer
    OnErr = ErrInt
End Property
Public Property Get Description() As String
    Description = ErrStr
End Property
Private Sub Class_Initialize()
Set Sock = New MSWinsockLib.Winsock
End Sub
Private Sub Class_Terminate()
Sock.Close
Set Sock = Nothing
End Sub
Public Sub Send() '发送
    If LngPort < 1 Then LngPort = 25
    If LngPriority < 1 Or LngPriority > 5 Then LngPriority = 2
    If StrCharset = "" Then StrCharset = "GB2312"
    If StrC Then StrC
    If Right(StrRecipient, 1) <> ";" Then StrRecipient = StrRecipient & ";"
    Sock.Close '关闭连接
    Sock.Connect StrServerAddress, LngPort '连接邮件服务器
End Sub
Private Sub Sock_DataArrival(ByVal bytesTotal As Long)
    Dim StrServerResponse  As String '服务器返回的信息
    Dim StrResponseCode As String
    Dim StrRe() As String
    Dim II As Long
    Const RandString As String = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_"
    Dim GlobalStr As String
    For II = 1 To 24
        GlobalStr = GlobalStr & Mid(RandString, Int(Rnd * Len(RandString)) + 1, 1)
    Next II

    '获取邮件服务器返回信息
    Sock.GetData StrServerResponse
    StrResponseCode = Left(StrServerResponse, 3)

    '登陆邮件服务器,SMTP验证
    Sock.SendData "HELO " & Trim$(StrFrom) & vbCrLf
    Sock.SendData "AUTH LOGIN" & vbCrLf
    Sock.SendData (StrMailServerUserName) & vbCrLf
    Sock.SendData (StrMailServerPassword) & vbCrLf

    StrRe = Split(StrRecipient, ";")
    For II = 0 To UBound(StrRe) - 1 '发送到多个收件人
    If StrResp Or _
      StrResp Or _
      StrResp Or _
      StrResp Or _
      StrResp Then
        Sock.SendData "MAIL FROM:" & Trim$(StrFrom) & vbCrLf '寄件人
        Sock.SendData "RCPT TO:" & Trim$(StrRe(II)) & vbCrLf '收件人
        Sock.SendData "DATA" & vbCrLf
        Sock.SendData "From: " & StrFromName & " <" & StrFrom & ">" & vbCrLf '寄件人
        Sock.SendData "To: " & Mid(StrRe(II), 1, InStr(StrRe(II), "@") - 1) & " <" & StrRe(II) & ">" & vbCrLf '收件人
        Sock.SendData "Subject:" & Chr(32) & StrSubject & vbCrLf '邮件主题
        Sock.SendData "X-Mailer: SkyGz MAIL1.0" & vbCrLf '邮件发送者
        Sock.SendData "X-Priority: " & CStr(LngPriority) & vbCrLf '邮件发送级别
        Sock.SendData "MIME-Version: 1.0" & vbCrLf
        Sock.SendData "Content-Type: multipart/alternative;" & vbCrLf & Chr(9) & "boundary=""----=_NextPart_" & GlobalStr & """" & vbCrLf & vbCrLf
        Sock.SendData "This Is A Multi-Part Message In MIME Format." & vbCrLf & vbCrLf
        Sock.SendData "------=_NextPart_" & GlobalStr & vbCrLf
        Sock.SendData "Content-Type: " & StrContentType & "; charset=" & StrCharset & ";" & vbCrLf & vbCrLf '语言编码和邮件编码
        Sock.SendData StrBody & vbCrLf & vbCrLf '邮件内容
        Sock.SendData "------=_NextPart_" & GlobalStr & "--" & vbCrLf
        Sock.SendData "." & vbCrLf
        ErrInt = 3
        ErrStr = "发送成功"
        'Sock.Close
        'Send = True
    Else
        ErrInt = 4
        ErrStr = "发送失败"
        'Sock.Close
        'Send = False
    End If
    Next II
        Sock.SendData "QUIT" & vbCrLf '退出邮件服务器
End Sub
Private Function Base64(ByVal Str As String) As String 'base6加密算法
    Const BASE64_TABLE As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
    Dim StrTempLine As String
    Dim j As Integer
    For j = 1 To (Len(Str) - Len(Str) Mod 3) Step 3
        StrTempLine = StrTempLine + Mid(BASE64_TABLE, (Asc(Mid(Str, j, 1))  4) + 1, 1)
        StrTempLine = StrTempLine + Mid(BASE64_TABLE, ((Asc(Mid(Str, j, 1)) Mod 4) * 16 _
                      + Asc(Mid(Str, j + 1, 1))  16) + 1, 1)
        StrTempLine = StrTempLine + Mid(BASE64_TABLE, ((Asc(Mid(Str, j + 1, 1)) Mod 16) * 4 _
                      + Asc(Mid(Str, j + 2, 1))  64) + 1, 1)
        StrTempLine = StrTempLine + Mid(BASE64_TABLE, (Asc(Mid(Str, j + 2, 1)) Mod 64) + 1, 1)
    Next j
    If Not (Len(Str) Mod 3) = 0 Then
        If (Len(Str) Mod 3) = 2 Then
            StrTempLine = StrTempLine + Mid(BASE64_TABLE, (Asc(Mid(Str, j, 1))  4) + 1, 1)
            StrTempLine = StrTempLine + Mid(BASE64_TABLE, (Asc(Mid(Str, j, 1)) Mod 4) * 16 _
                      + Asc(Mid(Str, j + 1, 1))  16 + 1, 1)
            StrTempLine = StrTempLine + Mid(BASE64_TABLE, (Asc(Mid(Str, j + 1, 1)) Mod 16) * 4 + 1, 1)
            StrTempLine = StrTempLine & "="
        ElseIf (Len(Str) Mod 3) = 1 Then
            StrTempLine = StrTempLine + Mid(BASE64_TABLE, Asc(Mid(Str, j, 1))  4 + 1, 1)
            StrTempLine = StrTempLine + Mid(BASE64_TABLE, (Asc(Mid(Str, j, 1)) Mod 4) * 16 + 1, 1)
            StrTempLine = StrTempLine & "=="
        End If
    End If
    Base64 = StrTempLine
End Function

最后技术宅想说，就算做好了群发软件希望也只是测试，不要真正拿来干一些非法的事情哈。

三、代码实现

Public Response As String, Reply As Integer, DateNow As String

Public Start As Single, Tmr As Single

'API-函数

'Private Declare Function ArrPtr Lib "msvbvm50.dll" _

' Alias "VarPtr" (Ptr() As Any) As Long '<-- VB5

'ArrPtr:取数组的地址

Private Declare Function ArrPtr Lib "msvbvm60.dll" _

Alias "VarPtr" (Ptr() As Any) As Long '<-- VB6

'PokeLng:转换地址内容

Private Declare Sub PokeLng Lib "kernel32" Alias "RtlMoveMemory" ( _

ByVal Addr As Long, Source As Long, _

Optional ByVal Bytes As Long = 4)

'Base64:

Private Base64EncodeByte(0 To 63) As Byte

Private Base64EncodeWord(0 To 63) As Integer

Const Base64EmptyByte As Byte = 61

Const Base64EmptyWord As Integer = 61

Public Sub Base64Init()

　'建立Base64码数组

　Const Chars64 As String _

　　= "ABCDEFGHIJKLMNOPQRSTUVWXYZ" _

　　& "abcdefghijklmnopqrstuvwxyz" _

　　& "0123456789+/"

　Static i As Long

　Dim Code As Integer

　If i Then Exit Sub

　For i = 0 To 63

　　Code = Asc(Mid$(Chars64, i + 1, 1))

　　Base64EncodeByte(i) = Code

　　Base64EncodeWord(i) = Code

　Next i

End Sub

Public Static Function Base64EncodeString(ByRef Text As String) As String

'Base64码转换函数

　Dim Chars() As Integer

　Dim SavePtr As Long

　Dim SADescrPtr As Long

　Dim DataPtr As Long

　Dim CountPtr As Long

　Dim TextLen As Long

　Dim i As Long

　Dim Chars64() As Integer

　Dim SavePtr64 As Long

　Dim SADescrPtr64 As Long

　Dim DataPtr64 As Long

　Dim CountPtr64 As Long

　Dim TextLen64 As Long

　Dim j As Long

　Dim b1 As Integer

　Dim b2 As Integer

　Dim b3 As Integer

　j = 0

　TextLen = Len(Text)

　If TextLen = 0 Then Exit Function

　'输入字符串校验

　TextLen64 = ((TextLen + 2) \ 3) * 4

　'字符串转换为Base64码后的长度

　Base64EncodeString = Space$(TextLen64)

　If SavePtr = 0 Then

　　ReDim Chars(1 To 1)

　　SavePtr = VarPtr(Chars(1))

　　'SavePtr=*Chars(1)

　　PokeLng VarPtr(SADescrPtr), ByVal ArrPtr(Chars)

　　'*SADescrPtr=*Chars

　　DataPtr = SADescrPtr + 12

　　CountPtr = SADescrPtr + 16

　　ReDim Chars64(0 To 0)

　　SavePtr64 = VarPtr(Chars64(0))

　　'SavePtr64=*Chars64(0)

　　PokeLng VarPtr(SADescrPtr64), ByVal ArrPtr(Chars64)

　　'*SADescrPtr64=*Chars64

　　DataPtr64 = SADescrPtr64 + 12

　　CountPtr64 = SADescrPtr64 + 16

　End If

　PokeLng DataPtr, StrPtr(Text)

　'DataPtr=*Text

　PokeLng CountPtr, TextLen

　'CountPtr=TextLen

　PokeLng DataPtr64, StrPtr(Base64EncodeString)

　'DataPtr64=*Base64EncodeString

　PokeLng CountPtr64, TextLen64

　'CountPtr64=Textlen64

　Base64Init

　'输入字符串转换为Base64码

　For i = 1 To TextLen - 2 Step 3

　　b1 = Chars(i)

　　b2 = Chars(i + 1)

　　b3 = Chars(i + 2)

　　'Base64-Bytes:

　　Chars64(j) = Base64EncodeWord(b1 \ &H4)

　　Chars64(j + 1) = Base64EncodeWord((b1 And &H3) * &H10 + b2 \ &H10)

　　Chars64(j + 2) = Base64EncodeWord((b2 And &HF) * &H4 + b3 \ &H40)

　　Chars64(j + 3) = Base64EncodeWord(b3 And &H3F)

　　j = j + 4

　Next i

　'继续将未转换完的输入字符串转换为Base64码

　Select Case TextLen - i

　　Case 0 '2 Bytes

　　　b1 = Chars(i)

　　　Chars64(j) = Base64EncodeWord(b1 \ &H4)

　　　Chars64(j + 1) = Base64EncodeByte((b1 And &H3) * &H10)

　　　Chars64(j + 2) = Base64EmptyWord

　　　Chars64(j + 3) = Base64EmptyWord

　　Case 1 '1 Byte

　　　b1 = Chars(i)

　　　b2 = Chars(i + 1)

　　　Chars64(j) = Base64EncodeWord(b1 \ &H4)

　　　Chars64(j + 1) = Base64EncodeWord((b1 And &H3) * &H10 + b2 \ &H10)

　　　Chars64(j + 2) = Base64EncodeWord((b2 And &HF) * &H4)

　　　Chars64(j + 3) = Base64EmptyWord

　End Select

　'返回转换成Base64码的字符串

　PokeLng DataPtr64, SavePtr64

　PokeLng CountPtr64, 1

　PokeLng DataPtr, SavePtr

　PokeLng CountPtr, 1

End Function

Sub SendEmail(MailServerName As String, FromName As String, _

　FromEmailAddress As String, ToName As String, ToEmailAddress As String, _

　EmailSubject As String, EmailBodyOfMessage As String, EmialPassword As String, _

　EmialUsername As String, NeedCheck As Integer)

　Dim first As String, Second As String, Third As String

　Dim Fourth As String, Fifth As String, Sixth As String

　Dim Seventh As String, Eighth As String

　Winsock1.LocalPort = 0 '用端口0来动态的建立连接

　If Winsock1.State = sckClosed Then '检查winsock的状态是否为关

　　'发件人地址

　　first = "mail from:" + Chr(32) + FromEmailAddress + vbCrLf

　　'收件人地址

　　Second = "rcpt to:" + Chr(32) + ToEmailAddress + vbCrLf

　　'时间

　　Third = "Date:" + Chr(32) + Format(Date, "Ddd") & ", " & _

　　　　　　Format(Date, "dd Mmm YYYY") & " " & Format(Time, "hh:mm:ss") _

　　　　　　& "" & " -0600" + vbCrLf

　　'发件人

　　Fourth = "From:" + Chr(32) + FromName + vbCrLf

　　'收件人

　　Fifth = "To:" + Chr(32) + ToNametxt + vbCrLf

　　'主题

　　Sixth = "Subject:" + Chr(32) + EmailSubject + vbCrLf

　　'正文

　　Seventh = EmailBodyOfMessage + vbCrLf

　　Ninth = "X-Mailer: lj v 2.x" + vbCrLf

　　Eighth = Fourth + Third + Ninth + Fifth + Sixth

　　Winsock1.Protocol = sckTCPProtocol ' 设置协议为TCP

　　Winsock1.RemoteHost = MailServerName ' SMTP地址

　　Winsock1.RemotePort = 25 ' SMTP端口

　　Winsock1.Connect ' 开始连接

　　WaitFor ("220")

　　StatusTxt.Caption = "Connecting...."

　　StatusTxt.Refresh

　　Winsock1.SendData ("HELO worldcomputers.com" + vbCrLf)

　　WaitFor ("250")

　　StatusTxt.Caption = "Connected"

　　StatusTxt.Refresh

　　If NeedCheck = 1 Then

　　　'进行校验LOGIN

　　　Winsock1.SendData ("AUTH LOGIN" + vbCrLf)

　　　StatusTxt.Caption = "LOGIN ESMTP"

　　　StatusTxt.Refresh

　　　WaitFor ("334")

　　　'输入用户名

　　　Winsock1.SendData (Base64EncodeString(EmialUsername) + vbCrLf)

　　　StatusTxt.Caption = "username"

　　　StatusTxt.Refresh

　　　WaitFor ("334")

　　　'输入用户口令

　　　Winsock1.SendData (Base64EncodeString(EmialPassword) + vbCrLf)

　　　StatusTxt.Caption = "password"

　　　StatusTxt.Refresh

　　　WaitFor ("235")

　　End If

　　Winsock1.SendData (first)

　　StatusTxt.Caption = "Sending Message"

　　StatusTxt.Refresh

　　WaitFor ("250")

　　Winsock1.SendData (Second)

　　WaitFor ("250")

　　Winsock1.SendData ("data" + vbCrLf)

　　WaitFor ("354")

　　Winsock1.SendData (Eighth + vbCrLf)

　　Winsock1.SendData (Seventh + vbCrLf)

　　Winsock1.SendData ("." + vbCrLf)

　　WaitFor ("250")

　　Winsock1.SendData ("quit" + vbCrLf)

　　StatusTxt.Caption = "Disconnecting"

　　StatusTxt.Refresh

　　WaitFor ("221")

　　Winsock1.Close

　Else

　　MsgBox (Str(Winsock1.State))

　End If

End Sub

Sub WaitFor(ResponseCode As String)

　'检查是否收到SMTP服务器的返回代码

　Start = Timer

　While Len(Response) = 0

　　Tmr = Timer - Start

　　DoEvents

　　If Tmr > 50 Then

　　　MsgBox "SMTP service error, timed out while waiting for response" _

　　　　　　, 64, MsgTitle

　　　Exit Sub

　　End If

　Wend

　While Left(Response, 3) <> ResponseCode

　　Tmr = Timer - Start

　　DoEvents

　　If Tmr > 50 Then

　　　MsgBox "SMTP service error, impromper response code. _

　　　　　　　Code should have been: " + ResponseCode + " Code recieved: " _

　　　　　　　+ Response, 64, MsgTitle

　　　Exit Sub

　　End If

　Wend

　Response = "" ' Response清空

End Sub

Private Sub Command1_Click()

　SendEmail txtEmailServer.Text, txtFromName.Text, _

　txtFromEmailAddress.Text, txtToEmailAddress.Text, _

　txtToEmailAddress.Text, txtEmailSubject.Text, _

　txtEmailBodyOfMessage.Text, txtFromEmialPassword.Text, _

　txtFromEmialUsername.Text, EmailNeedCheck.Value

　StatusTxt.Caption = "Mail Sent"

　StatusTxt.Refresh

　Beep

End Sub

Private Sub Winsock1_DataArrival(ByVal bytesTotal As Long)

　' 接收SMTP服务器的信息

　Winsock1.GetData Response

End Sub

　　在运行本程序前请先上网，根据实际值填写文本框后点击发送邮件按钮，至此一封具有安全认证服务功能的Email发出了。

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VB SMTP用户验证发送mail

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