用DELPHI编写VPN连接程序(100)

想用DELPHI编写VPN连接程序：1、我有个程序需要拨入VPN才能联网使用。2、想连接使用前先自动连接到VPN，软件关闭后自动断开。3、听说JVCL插件可以用，不过不会用。大家帮帮我，最好有源码。

没有 DialUp 插件，找不到啊 ~！发个给我呗~！619850858

接受答案了.

搞了好久才搞定，你就来问了，运气好啊。下面是完整代码，用到 DialUp 控件unit VpnUnit;interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, StrUtils, ExtCtrls, DialUp;type TVpnForm = class(TForm) DialUp: TDialUp; Button1: TButton; Label1: TLabel; ServerIPEd: TEdit; Label2: TLabel; UserEd: TEdit; Label3: TLabel; PwdEd: TEdit; Button2: TButton; procedure DialUpVPN; procedure DialUpActiveConnection(Sender: TObject; Handle: Integer; Status: TRasConnStatusA; StatusString: String; EntryName, DeviceType, DeviceName: array of Char); procedure DialUpError(Sender: TObject; ErrorCode: Integer; ErrorMessage: String); procedure DialUpNotConnected(Sender: TObject; ErrorCode: Integer; ErrorMessage: String); procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject);private{ Private declarations } public { Public declarations } end; var VpnForm: TVpnForm;type GUID = record Data1: Integer; Data2: ShortInt; Data3: ShortInt; Data4: array[0..7] of Byte;end;type TRasIPAddr = record a: byte; b: byte; c: byte; d: byte;end;type TRasEntry = record dwSize, dwfOptions, dwCountryID, dwCountryCode : Longint; szAreaCode : array[0.. 10] of Byte; szLocalPhoneNumber : array[0..128] of Byte; dwAlternatesOffset : Longint; ipaddr, ipaddrDns, ipaddrDnsAlt, ipaddrWins, ipaddrWinsAlt : TRasIPAddr; dwFrameSize, dwfNetProtocols, dwFramingProtocol : Longint; szScript : Array [0..259] of Byte; szAutodialDll : Array [0..259] of Byte; szAutodialFunc : Array [0..259] of Byte; szDeviceType : Array [0..16] of Byte; szDeviceName : Array [0..128] of Byte; szX25PadType : Array [0..32] of Byte; szX25Address : Array [0..200] of Byte; szX25Facilities : Array [0..200] of Byte; szX25UserData : Array [0..200] of Byte; dwChannels, dwReserved1, dwReserved2, dwSubEntries, dwDialMode, dwDialExtraPercent, dwDialExtraSampleSeconds, dwHangUpExtraPercent, dwHangUpExtraSampleSeconds, dwIdleDisconnectSeconds, dwType, dwEncryptionType, dwCustomAuthKey : Longint; guidId : GUID; szCustomDialDll : Array [0..259] of Byte; dwVpnStrategy, dwfOptions2, dwfOptions3 : Longint; szDnsSuffix : Array [0..255] of Byte; dwTcpWindowSize : Longint; szPrerequisitePbk : Array [0..259] of Byte; szPrerequisiteEntry : Array [0..256] of Byte; dwRedialCount, dwRedialPause : Longint;end;TRasCredentialsA = record dwSize, dwMask: Longint; szUserName: array[0..256] of Byte; szPassword: array[0..256] of Byte; szDomain: array[0..15] of Byte;end;function RasSetEntryPropertiesA(lpszPhonebook, lpszEntry: PAnsichar; lpRasEntry: Pointer; dwEntryInfoSize: LongInt;lpbDeviceInfoointer;dwDeviceInfoSize: Longint): Longint; stdcall;function RasSetCredentialsA(lpszPhoneBook, lpszEntry: PAnsichar; lpCredentials: Pointer; fClearCredentials: Longint): Longint; stdcall;procedure CopyMemory(Destination, Source: Pointer; Length:Integer) stdcall;var VpnServerIP,VpnUser,VpnPwd:string;implementation{$R *.dfm}function RasSetEntryPropertiesA; external 'Rasapi32.dll' name 'RasSetEntryPropertiesA'function RasSetCredentialsA; external 'Rasapi32.dll' name 'RasSetCredentialsA';procedure CopyMemory; external 'Kernel32.dll' name 'RtlMoveMemory';function Create_VPN_Connection(sEntryName, sServer, sUsername, sPassword: string): Boolean;var sDeviceName, sDeviceType: string; re: TRasEntry; rc: TRasCredentialsA;begin sDeviceName := 'WAN 微型端口 (PPTP)'; sDeviceType := 'VPN'; with re do begin Result := False; ZeroMemory(@re,SizeOf(re)); dwSize := Sizeof(re); dwCountryCode := 86; dwCountryID := 86; dwDialExtraPercent := 75; dwDialExtraSampleSeconds := 120; dwDialMode := 1; dwEncryptionType := 3; dwfNetProtocols := 4; dwfOptions := 1024262928-16; dwfOptions2 := 367; dwFramingProtocol := 1; dwHangUpExtraPercent := 10; dwHangUpExtraSampleSeconds := 120; dwRedialCount := 3; dwRedialPause := 60; dwType := 5; dwVpnStrategy := 0; dwEncryptionType := 3; //0 无 1 VPN 默认值 3 拨号默认值 可选 StrCopy(@szDeviceName[0], PansiChar(sDeviceName)); StrCopy(@szDeviceType[0], PansiChar(sDeviceType)); StrCopy(@szLocalPhoneNumber[0], PansiChar(sServer)); end; with rc do begin ZeroMemory(@rc,Sizeof(rc)); dwSize := sizeof(rc); dwMask := 11; StrCopy(@szUserName[0],PansiChar(sUsername)); StrCopy(@szPassword[0],PansiChar(sPassword)); end; if RasSetEntryPropertiesA(Nil, PChar(sEntryName),@re, SizeOf(re), nil, 0)=0 then if RasSetCredentialsA(Nil, PChar(sEntryName),@rc,0) = 0 then Result := True;end;procedure TVpnForm.DialUpVPN;begin DialUp.GetConnections; DialUp.DialMode:=dmsync; DialUp.GetEntries; DialUp.Entry:='VPN'; DialUp.Dial;end;procedure TVpnForm.DialUpActiveConnection(Sender: TObject; Handle: Integer; Status: TRasConnStatusA; StatusString: String; EntryName, DeviceType, DeviceName: array of Char);begin if Trim(EntryName)='VPN' then DialUp.HangUpConn(Handle);end;procedure TVpnForm.DialUpError(Sender: TObject; ErrorCode: Integer; ErrorMessage: String);begin Application.MessageBox(PChar('与VPN服务器连接失败! '+ErrorMessage),'VPN连接',MB_OK+MB_ICONWARNING+MB_TOPMOST);end;procedure TVpnForm.DialUpNotConnected(Sender: TObject; ErrorCode: Integer; ErrorMessage: String);begin Application.MessageBox(PChar('与VPN服务器连接失败! '+ErrorMessage),'VPN连接',MB_OK+MB_ICONWARNING+MB_TOPMOST);end;procedure TVpnForm.Button1Click(Sender: TObject);var sServer, sEntryName, sUsername, sPassword: string;begin sEntryName := 'VPN'; sServer := ServerIPEd.Text; sUsername := UserEd.Text; sPassword := PwdEd.Text; if Create_VPN_Connection(sEntryName, sServer, sUsername, sPassword) then begin DialUpVPN; end else begin Application.MessageBox('VPN连接建立失败!','VPN连接',MB_OK+MB_ICONWARNING+MB_TOPMOST); end;end;procedure TVpnForm.Button2Click(Sender: TObject);begin DialUp.GetConnections;end;end.

能否给我发一份 DialUp 插件，谢谢！linxinhua@126.com

能不能也发给我一份DialUp 插件，谢谢！weidong1214@yahoo.com.cn