| 1 | { **************************************************************
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| 2 | Package: XWB - Kernel RPCBroker
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| 3 | Date Created: Sept 18, 1997 (Version 1.1)
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| 4 | Site Name: Oakland, OI Field Office, Dept of Veteran Affairs
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| 5 | Developers: Danila Manapsal, Don Craven, Joel Ivey
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| 6 | Description: Verify Code edit dialog.
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| 7 | Current Release: Version 1.1 Patch 40 (January 7, 2005))
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| 8 | *************************************************************** }
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| 9 |
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| 10 | unit VCEdit;
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| 11 |
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| 12 | interface
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| 13 |
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| 14 | uses
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| 15 | Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
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| 16 | StdCtrls, Buttons,
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| 17 | {Broker units}
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| 18 | Trpcb, Hash;
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| 19 |
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| 20 | type
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| 21 | TVCEdit = class(TComponent)
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| 22 | private
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| 23 | FRPCBroker : TRPCBroker;
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| 24 | FOldVC : string;
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| 25 | FConfirmFailCnt : integer; //counts failed confirms.
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| 26 | FHelp : string;
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| 27 | FOldVCSet: Boolean; // Shows whether old code was passed in, even if NULL
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| 28 | procedure NoChange(reason : string);
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| 29 | protected
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| 30 | public
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| 31 | constructor Create(AOwner: TComponent); override;
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| 32 | destructor Destroy; override;
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| 33 | function ChangeVCKnowOldVC(strOldVC : string) : Boolean;
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| 34 | function ChangeVC : Boolean;
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| 35 | published
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| 36 | property RPCBroker : TRPCBroker read FRPCBroker write FRPCBroker;
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| 37 | end;
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| 38 |
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| 39 |
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| 40 |
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| 41 | TfrmVCEdit = class(TForm)
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| 42 | lblOldVC: TLabel;
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| 43 | lblNewVC: TLabel;
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| 44 | lblConfirmVC: TLabel;
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| 45 | edtOldVC: TEdit;
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| 46 | edtNewVC: TEdit;
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| 47 | edtConfirmVC: TEdit;
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| 48 | btnOK: TBitBtn;
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| 49 | btnCancel: TBitBtn;
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| 50 | btnHelp: TBitBtn;
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| 51 | procedure btnOKClick(Sender: TObject);
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| 52 | procedure btnHelpClick(Sender: TObject);
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| 53 | procedure edtNewVCExit(Sender: TObject);
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| 54 | procedure edtOldVCChange(Sender: TObject);
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| 55 | protected
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| 56 | { Private declarations }
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| 57 | FVCEdit : TVCEdit; //Links form to instance of VCEdit.
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| 58 | public
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| 59 | { Public declarations }
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| 60 | end;
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| 61 |
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| 62 | function ChangeVerify(RPCBroker: TRPCBroker): Boolean;
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| 63 | function SilentChangeVerify(RPCBroker: TRPCBroker; OldVerify, NewVerify1, NewVerify2: String; var Reason: String): Boolean;
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| 64 |
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| 65 | var
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| 66 | frmVCEdit: TfrmVCEdit;
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| 67 |
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| 68 | const
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| 69 | MAX_CONFIRM_FAIL : integer = 3;
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| 70 | U = '^';
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| 71 |
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| 72 | {procedure Register;}
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| 73 |
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| 74 | implementation
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| 75 |
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| 76 | {$R *.DFM}
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| 77 |
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| 78 | function ChangeVerify(RPCBroker: TRPCBroker): Boolean;
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| 79 | var
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| 80 | VCEdit1: TVCEdit;
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| 81 | begin
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| 82 | // Str := '';
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| 83 | VCEdit1 := TVCEdit.Create(Application);
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| 84 | try
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| 85 | VCEdit1.RPCBroker := RPCBroker;
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| 86 | if VCEdit1.ChangeVC then //invoke VCEdit form. //VC changed.
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| 87 | Result := True
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| 88 | else
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| 89 | Result := False;
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| 90 | finally
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| 91 | VCEdit1.Free;
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| 92 | end;
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| 93 | end;
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| 94 |
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| 95 | function SilentChangeVerify(RPCBroker: TRPCBroker; OldVerify, NewVerify1, NewVerify2: String; var Reason: String): Boolean;
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| 96 | var
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| 97 | OrigContext: String;
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| 98 | begin
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| 99 | Result := False;
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| 100 | Reason := '';
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| 101 | if UpperCase(OldVerify) = UpperCase(NewVerify1) then
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| 102 | Reason := 'The new code is the same as the current one.'
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| 103 | else
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| 104 | if UpperCase(NewVerify1) <> UpperCase(NewVerify2) then
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| 105 | Reason := 'The confirmation code does not match.';
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| 106 | if Reason = '' then
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| 107 | try
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| 108 | with RPCBroker do
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| 109 | begin
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| 110 | OrigContext := CurrentContext;
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| 111 | CreateContext('XUS SIGNON');
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| 112 | RemoteProcedure := 'XUS CVC';
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| 113 | Param[0].PType := literal;
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| 114 | Param[0].Value := Encrypt(UpperCase(OldVerify))
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| 115 | + U + Encrypt(UpperCase(NewVerify1))
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| 116 | + U + Encrypt(UpperCase(NewVerify2)) ;
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| 117 | Call;
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| 118 | Reason := '';
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| 119 | if Results[0] = '0' then
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| 120 | Result := True
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| 121 | else if Results.Count > 1 then
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| 122 | Reason := Results[1];
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| 123 | CreateContext(OrigContext);
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| 124 | end;
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| 125 | except
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| 126 | on E: Exception do
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| 127 | begin
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| 128 | RPCBroker.RPCBError := E.Message;
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| 129 | if Assigned(RPCBroker.OnRPCBFailure) then
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| 130 | RPCBroker.OnRPCBFailure(RPCBroker)
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| 131 | else if RPCBroker.ShowErrorMsgs = semRaise then
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| 132 | Raise;
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| 133 | end;
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| 134 | end;
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| 135 | end;
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| 136 |
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| 137 | {------------------TVCEdit component------------------------------------}
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| 138 |
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| 139 | constructor TVCEDit.Create(AOwner: TComponent);
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| 140 | begin
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| 141 | inherited Create(AOwner);
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| 142 | FOldVCSet := False;
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| 143 | end;
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| 144 |
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| 145 | destructor TVCEDit.Destroy;
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| 146 | begin
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| 147 | inherited Destroy;
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| 148 | end;
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| 149 |
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| 150 |
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| 151 | function TVCEdit.ChangeVCKnowOldVC(strOldVC : string) : Boolean;
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| 152 | begin
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| 153 | FOldVC := strOldVC;
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| 154 | FOldVCSet := True;
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| 155 | Result := ChangeVC;
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| 156 | FOldVCSet := False; // set it back to false in case we come in again
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| 157 | end;
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| 158 |
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| 159 | {--------------------------ChangeVC function---------------------------}
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| 160 | function TVCEdit.ChangeVC : Boolean;
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| 161 | var
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| 162 | OldHandle: THandle;
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| 163 | begin
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| 164 | Result := False;
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| 165 | try
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| 166 | frmVCEDit := TfrmVCEDit.Create(application);
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| 167 | with frmVCEDit do
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| 168 | begin
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| 169 | FVCEdit := Self; //To link form to VCEdit instance.
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| 170 | if FOldVCSet then //If old VC known, stuff it & disable editing.
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| 171 | begin
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| 172 | edtOldVC.Color := clBtnFace;
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| 173 | edtOldVC.Enabled := False;
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| 174 | edtOldVC.Text := FOldVC;
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| 175 | end{if};
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| 176 | // ShowApplicationAndFocusOK(Application);
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| 177 | OldHandle := GetForegroundWindow;
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| 178 | SetForegroundWindow(frmVCEdit.Handle);
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| 179 | if ShowModal = mrOK then //outcome of form.
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| 180 | Result := True;
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| 181 | SetForegroundWindow(OldHandle);
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| 182 | end{with};
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| 183 | frmVCEDit.Free;
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| 184 | except
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| 185 | on E: Exception do
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| 186 | begin
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| 187 | FRPCBroker.RPCBError := E.Message;
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| 188 | if Assigned(FRPCBroker.OnRPCBFailure) then
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| 189 | FRPCBroker.OnRPCBFailure(FRPCBroker)
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| 190 | else if FRPCBroker.ShowErrorMsgs = semRaise then
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| 191 | Raise;
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| 192 | end;
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| 193 | end{except};
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| 194 | end;
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| 195 |
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| 196 | {------------------TVCEdit.NoChange-------------------------------------
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| 197 | -----------Displays error messages when change fails.-------------------}
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| 198 | procedure TVCEdit.NoChange(reason : string);
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| 199 | begin
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| 200 | ShowMessage('Your VERIFY code was not changed.' + #13 +
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| 201 | reason + #13 );
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| 202 | end;
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| 203 |
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| 204 |
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| 205 | {-------------------------TfrmVCEdit methods-------------------------------}
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| 206 | procedure TfrmVCEdit.btnOKClick(Sender: TObject);
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| 207 | begin
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| 208 | with FVCEdit do
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| 209 | begin
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| 210 | if edtOldVC.Text = edtNewVC.Text then
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| 211 | begin
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| 212 | NoChange('The new code is the same as the current one.');
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| 213 | edtNewVC.Text := '';
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| 214 | edtConfirmVC.Text := '';
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| 215 | edtNewVC.SetFocus;
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| 216 | end
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| 217 | else
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| 218 | if edtNewVC.Text <> edtConfirmVC.Text then
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| 219 | begin
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| 220 | inc(FConfirmFailCnt);
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| 221 | if FConfirmFailCnt > MAX_CONFIRM_FAIL then
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| 222 | begin
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| 223 | edtNewVC.Text := '';
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| 224 | edtConfirmVC.Text := '';
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| 225 | NoChange('The confirmation code does not match.');
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| 226 | edtNewVC.SetFocus;
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| 227 | end
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| 228 | else
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| 229 | begin
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| 230 | edtConfirmVC.text := '';
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| 231 | NoChange('The confirmation code does not match. Try again.');
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| 232 | edtConfirmVC.SetFocus;
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| 233 | end;
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| 234 | end
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| 235 | else
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| 236 | with FRPCBroker do
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| 237 | begin
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| 238 | RemoteProcedure := 'XUS CVC';
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| 239 | Param[0].PType := literal;
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| 240 | Param[0].Value := Encrypt(UpperCase(edtOldVC.Text))
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| 241 | + U + Encrypt(UpperCase(edtNewVC.Text))
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| 242 | + U + Encrypt(UpperCase(edtConfirmVC.Text)) ;
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| 243 | Call;
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| 244 | if Results[0] = '0' then
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| 245 | begin
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| 246 | ShowMessage('Your VERIFY CODE has been changed');
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| 247 | ModalResult := mrOK; //Close form.
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| 248 | end
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| 249 | else
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| 250 | begin
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| 251 | if Results.Count > 1 then
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| 252 | NoChange(Results[1])
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| 253 | else
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| 254 | NoChange('');
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| 255 | edtNewVC.Text := '';
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| 256 | edtConfirmVC.Text := '';
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| 257 | edtNewVC.SetFocus;
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| 258 | end;
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| 259 | end;
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| 260 | end{with};
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| 261 | end;
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| 262 |
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| 263 | procedure TfrmVCEdit.btnHelpClick(Sender: TObject);
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| 264 | begin
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| 265 | with FVCEdit do
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| 266 | begin
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| 267 | if FHelp = '' then
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| 268 | begin
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| 269 | with FRPCBroker do
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| 270 | begin
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| 271 | RemoteProcedure := 'XUS AV HELP';
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| 272 | Call;
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| 273 | if Results.Count > 0 then
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| 274 | FHelp := Results[0];
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| 275 | FHelp := 'Enter a new verify code and then confirm it.'
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| 276 | + #13#13 + FHelp;
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| 277 | if FOldVC = '' then
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| 278 | FHelp := 'Enter your current verify code first.' + #13#10 + FHelp;
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| 279 | end{with};
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| 280 | end{if};
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| 281 | ShowMessage(FHelp);
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| 282 | end{with};
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| 283 | end;
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| 284 |
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| 285 | procedure TfrmVCEdit.edtNewVCExit(Sender: TObject);
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| 286 | begin
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| 287 | if edtNewVC.Modified then
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| 288 | begin
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| 289 | FVCEdit.FConfirmFailCnt := 0; //Reset counter.
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| 290 | edtNewVC.Modified := False;
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| 291 | end;
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| 292 | end;
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| 293 |
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| 294 | procedure TfrmVCEdit.edtOldVCChange(Sender: TObject); //Also NewVC and ConfirmVC
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| 295 | begin
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| 296 | btnOk.Default := ((edtNewVC.Text <> '') and //Update status of OK btn.
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| 297 | (edtOldVC.Text <> '') and
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| 298 | (edtConfirmVC.Text <> '') );
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| 299 | end;
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| 300 |
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| 301 | end.
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