| 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: winsock utilities.
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| 7 | Current Release: Version 1.1 Patch 47 (Jun. 17, 2008))
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| 8 | *************************************************************** }
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| 9 |
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| 10 |
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| 11 | unit RpcNet ;
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| 12 | {
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| 13 | Changes in v1.1.13 (JLI -- 8/23/00) -- XWB*1.1*13
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| 14 | Made changes to cursor dependent on current cursor being crDefault so
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| 15 | that the application can set it to a different cursor for long or
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| 16 | repeated processes without the cursor 'flashing' repeatedly.
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| 17 | }
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| 18 | interface
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| 19 |
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| 20 | uses
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| 21 | SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
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| 22 | Forms, Dialogs, winsock;
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| 23 |
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| 24 | Const XWB_GHIP = WM_USER + 10000;
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| 25 | //Const XWB_SELECT = WM_USER + 10001;
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| 26 |
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| 27 | Const WINSOCK1_1 = $0101;
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| 28 | Const PF_INET = 2;
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| 29 | Const SOCK_STREAM = 1;
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| 30 | Const IPPROTO_TCP = 6;
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| 31 | Const INVALID_SOCKET = -1;
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| 32 | Const SOCKET_ERROR = -1;
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| 33 | Const FIONREAD = $4004667F;
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| 34 | Const ActiveConnection: boolean = False;
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| 35 |
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| 36 | type EchatError = class(Exception);
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| 37 |
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| 38 | type
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| 39 | TRPCFRM1 = class(TForm)
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| 40 | private
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| 41 | { Private declarations }
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| 42 | public
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| 43 | { Public declarations }
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| 44 | procedure XWBGHIP(var msgSock: TMessage);
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| 45 | //procedure xwbSelect(var msgSock: TMessage); //P14
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| 46 | procedure WndProc(var Message : TMessage); reintroduce; //P14
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| 47 | end;
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| 48 |
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| 49 | type
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| 50 | WinTaskRec = record
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| 51 | InUse: boolean;
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| 52 | pTCPResult: Pointer;
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| 53 | strTemp: string; {generic output string for async calls}
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| 54 | chrTemp: PChar; {generic out PChar for async calls}
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| 55 | hTCP: THandle; {pseudo handle for async calls}
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| 56 | hWin: hWnd; {handle for owner window}
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| 57 | CallWait: boolean;
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| 58 | CallAbort: boolean;
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| 59 | RPCFRM1: TRPCFRM1;
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| 60 | end;
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| 61 |
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| 62 | var
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| 63 | WRec: array[1..128] of WinTaskRec;
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| 64 | Hash: array[0..159] of char;
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| 65 |
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| 66 | {Windows OS abstraction functions. Should be taken over by VA Kernel}
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| 67 |
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| 68 | function libGetCurrentProcess: word;
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| 69 |
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| 70 | {Socket functions using library RPCLIB.DLL, in this case called locally}
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| 71 |
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| 72 | //function libAbortCall(inst: integer): integer; export; //P14
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| 73 | function libGetHostIP1(inst: integer; HostName: PChar;
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| 74 | var outcome: PChar): integer; export;
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| 75 | function libGetLocalIP(inst: integer; var outcome: PChar): integer; export;
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| 76 | procedure libClose(inst: integer); export;
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| 77 | function libOpen:integer; export;
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| 78 |
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| 79 | function GetTCPError:string;
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| 80 |
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| 81 | {Secure Hash Algorithm functions, library SHA.DLL and local interfaces}
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| 82 |
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| 83 | function libGetLocalModule: PChar; export;
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| 84 | function GetFileHash(fn: PChar): longint; export;
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| 85 |
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| 86 | implementation
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| 87 |
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| 88 | uses rpcconf1;
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| 89 |
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| 90 | {function shsTest: integer; far; external 'SHA';
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| 91 | procedure shsHash(plain: PChar; size: integer;
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| 92 | Hash: PChar); far; external 'SHA';} //Removed in P14
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| 93 |
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| 94 | {$R *.DFM}
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| 95 |
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| 96 |
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| 97 |
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| 98 | function libGetCurrentProcess: word;
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| 99 | begin
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| 100 | Result := GetCurrentProcess;
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| 101 | end;
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| 102 |
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| 103 | function libGetLocalIP(inst: integer; var outcome: PChar): integer;
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| 104 | var
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| 105 | local: PChar;
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| 106 | begin
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| 107 | local := StrAlloc(255);
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| 108 | gethostname( local, 255);
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| 109 | Result := libGetHostIP1(inst, local, outcome);
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| 110 | StrDispose(local);
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| 111 | end;
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| 112 |
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| 113 | function libGetLocalModule: PChar;
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| 114 | var
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| 115 | tsk: THandle;
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| 116 | name: PChar;
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| 117 | begin
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| 118 | tsk := GetCurrentProcess;
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| 119 | name := StrAlloc(1024);
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| 120 | GetModuleFilename(tsk, name, 1024);
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| 121 | Result := name;
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| 122 |
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| 123 | end;
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| 124 |
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| 125 | function GetFileHash(fn: PChar): longint;
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| 126 | var
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| 127 | hFn: integer;
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| 128 | finfo: TOFSTRUCT;
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| 129 | bytesRead, status: longint;
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| 130 | tBuf: PChar;
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| 131 |
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| 132 | begin
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| 133 | tBuf := StrAlloc(160);
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| 134 | hFn := OpenFile(fn, finfo, OF_READ);
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| 135 | bytesRead := 0;
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| 136 | status := _lread(hFn, tBuf, sizeof(tBuf));
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| 137 | while status <> 0 do
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| 138 | begin
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| 139 | status := _lread(hFn, tBuf, sizeof(tBuf));
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| 140 | inc(bytesRead,status);
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| 141 | end;
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| 142 | _lclose(hFn);
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| 143 | StrDispose(tBuf);
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| 144 | Result := bytesRead;
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| 145 | end;
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| 146 |
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| 147 | function libOpen:integer;
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| 148 | var
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| 149 | inst: integer;
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| 150 | WSData: TWSADATA;
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| 151 | RPCFRM1: TRPCFRM1;
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| 152 | begin
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| 153 | inst := 1; {in this case, no DLL so instance is always 1}
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| 154 | RPCFRM1 := TRPCFRM1.Create(nil); //P14
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| 155 | with WRec[inst] do
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| 156 | begin
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| 157 | hWin := AllocateHWnd(RPCFRM1.wndproc);
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| 158 |
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| 159 | WSAStartUp(WINSOCK1_1, WSData);
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| 160 | WSAUnhookBlockingHook;
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| 161 |
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| 162 | Result := inst;
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| 163 | InUse := True;
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| 164 | end;
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| 165 | RPCFRM1.Release; //P14
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| 166 | end;
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| 167 |
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| 168 | procedure libClose(inst: integer);
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| 169 | begin
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| 170 |
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| 171 | with WRec[inst] do
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| 172 | begin
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| 173 | InUse := False;
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| 174 | WSACleanup;
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| 175 | DeallocateHWnd(hWin);
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| 176 | end;
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| 177 | end;
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| 178 |
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| 179 | function libGetHostIP1(inst: integer; HostName: PChar;
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| 180 | var outcome: PChar): integer;
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| 181 | var
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| 182 | //RPCFRM1: TRPCFRM1; {P14}
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| 183 | //wMsg: TMSG; {P14}
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| 184 | //hWnd: THandle; {P14}
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| 185 | ChangeCursor: Boolean;
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| 186 |
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| 187 | begin
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| 188 |
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| 189 | outcome[0] := #0;
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| 190 |
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| 191 | if Screen.Cursor = crDefault then
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| 192 | ChangeCursor := True
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| 193 | else
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| 194 | ChangeCursor := False;
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| 195 | if ChangeCursor then
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| 196 | Screen.Cursor := crHourGlass;
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| 197 |
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| 198 | with WRec[inst] do
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| 199 | begin
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| 200 |
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| 201 | if HostName[0] = #0 then
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| 202 | begin
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| 203 | StrCat(outcome,'No Name to Resolve!');
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| 204 | Result := -1;
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| 205 | exit;
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| 206 | end;
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| 207 |
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| 208 | if CallWait = True then
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| 209 | begin
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| 210 | outcome[0] := #0;
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| 211 | StrCat(outcome, 'Call in Progress');
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| 212 | Result := -1;
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| 213 | exit;
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| 214 | end;
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| 215 |
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| 216 | if inet_addr(HostName) > INADDR_ANY then
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| 217 | begin
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| 218 | outcome := Hostname;
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| 219 | Result := 0;
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| 220 | if ChangeCursor then
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| 221 | Screen.Cursor := crDefault;
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| 222 | WSACleanup;
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| 223 | exit;
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| 224 | end;
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| 225 |
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| 226 | GetMem(pTCPResult, MAXGETHOSTSTRUCT+1);
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| 227 | try
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| 228 | begin
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| 229 | CallWait := True;
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| 230 | CallAbort := False;
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| 231 | PHostEnt(pTCPResult)^.h_name := nil;
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| 232 | hTCP := WSAAsyncGetHostByName(hWin, XWB_GHIP, HostName,
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| 233 | pTCPResult, MAXGETHOSTSTRUCT );
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| 234 | { loop while CallWait is True }
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| 235 | CallAbort := False;
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| 236 | while CallWait = True do
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| 237 | Application.ProcessMessages;
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| 238 | end;
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| 239 | except on EInValidPointer do
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| 240 | begin
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| 241 | StrCat(outcome,'Error in GetHostByName');
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| 242 | if ChangeCursor then
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| 243 | Screen.Cursor := crDefault;
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| 244 | end;
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| 245 |
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| 246 | end;
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| 247 |
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| 248 | FreeMem(pTCPResult, MAXGETHOSTSTRUCT+1);
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| 249 | StrCopy(outcome,chrTemp);
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| 250 | Result := 0;
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| 251 | if ChangeCursor then
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| 252 | Screen.Cursor := crDefault;
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| 253 | end;
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| 254 | end;
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| 255 |
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| 256 | (*procedure TRPCFRM1.XWBSELECT(var msgSock: TMessage);
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| 257 | var
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| 258 | noop: integer;
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| 259 | begin
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| 260 | case msgSock.lparam of
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| 261 | FD_ACCEPT: {connection arrived}
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| 262 | begin
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| 263 | noop := 1;
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| 264 | end;
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| 265 | FD_CONNECT: {connection initiated}
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| 266 | begin
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| 267 | noop := 1;
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| 268 | end;
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| 269 | FD_READ: {data received, put in display}
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| 270 | begin
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| 271 | noop := 1;
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| 272 | end;
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| 273 | FD_CLOSE: {disconnection of accepted socket}
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| 274 | begin
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| 275 | noop := 1;
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| 276 | end;
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| 277 | else
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| 278 | noop := 1;
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| 279 | end;
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| 280 | end;*) //Procedure removed in P14.
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| 281 |
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| 282 | procedure TRPCFRM1.WndProc(var Message : TMessage);
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| 283 | begin
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| 284 | with Message do
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| 285 | case Msg of
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| 286 | {XWB_SELECT : xwbSelect(Message);} //P14
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| 287 | XWB_GHIP: xwbghip(Message);
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| 288 | else
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| 289 | DefWindowProc(WRec[1].hWin, Msg, wParam, lParam);
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| 290 | {Inherited WndProc(Message);}
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| 291 | end;
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| 292 | end;
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| 293 |
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| 294 | procedure TRPCFRM1.XWBGHIP(var msgSock: TMessage);
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| 295 | var
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| 296 | TCPResult: PHostEnt;
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| 297 | WSAError: integer;
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| 298 | HostAddr: TSockaddr;
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| 299 | inst: integer;
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| 300 |
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| 301 | begin
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| 302 | inst := 1; {local case is always 1}
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| 303 |
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| 304 |
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| 305 | with WRec[inst] do
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| 306 | begin
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| 307 |
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| 308 | hTCP := msgSock.WParam;
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| 309 |
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| 310 | chrTemp := StrAlloc(512);
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| 311 |
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| 312 | CallWait := False;
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| 313 | If CallAbort = True then { User aborted call }
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| 314 | begin
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| 315 | StrCopy(ChrTemp,'Abort!');
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| 316 | exit;
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| 317 | end;
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| 318 |
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| 319 | WSAError := WSAGetAsyncError(hTCP); { in case async call failed }
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| 320 | If WSAError < 0 then
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| 321 | begin
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| 322 | StrPCopy(chrTemp,IntToStr(WSAError));
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| 323 | exit;
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| 324 | end;
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| 325 |
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| 326 | try
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| 327 | begin
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| 328 | TCPResult := PHostEnt(pTCPResult);
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| 329 | StrTemp := '';
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| 330 | if TCPResult^.h_name = nil then
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| 331 | begin
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| 332 | StrCopy(chrTemp, 'Unknown!');
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| 333 | if rpcconfig <> nil then
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| 334 | rpcconfig.panel4.Caption := StrPas(chrTemp);
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| 335 | exit;
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| 336 | end;
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| 337 | {success, return resolved address}
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| 338 | HostAddr.sin_addr.S_addr := longint(plongint(TCPResult^.h_addr_list^)^);
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| 339 | chrTemp := inet_ntoa(HostAddr.sin_addr);
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| 340 | end;
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| 341 | except on EInValidPointer do StrCat(chrTemp, 'Error in GetHostByName');
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| 342 | end;
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| 343 | end;
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| 344 | end;
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| 345 |
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| 346 | (*function libAbortCall(inst: integer): integer;
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| 347 | var
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| 348 | WSAError: integer;
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| 349 | begin
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| 350 |
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| 351 | with WRec[inst] do
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| 352 | begin
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| 353 |
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| 354 | WSAError := WSACancelAsyncRequest(hTCP);
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| 355 | if WSAError = Socket_Error then
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| 356 | begin
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| 357 | WSAError := WSAGetLastError;
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| 358 | CallWait := False;
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| 359 | CallAbort := True;
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| 360 | Result := WSAError;
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| 361 | end;
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| 362 |
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| 363 | CallAbort := True;
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| 364 | CallWait := False;
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| 365 | Result := WSAError;
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| 366 |
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| 367 | end;
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| 368 |
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| 369 | end; *) //Removed in P14
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| 370 |
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| 371 | function GetTCPError:string;
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| 372 | var
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| 373 | x: string;
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| 374 | r: integer;
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| 375 |
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| 376 | begin
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| 377 | r := WSAGetLastError;
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| 378 | Case r of
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| 379 | WSAEINTR : x := 'WSAEINTR';
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| 380 | WSAEBADF : x := 'WSAEINTR';
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| 381 | WSAEFAULT : x := 'WSAEFAULT';
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| 382 | WSAEINVAL : x := 'WSAEINVAL';
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| 383 | WSAEMFILE : x := 'WSAEMFILE';
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| 384 | WSAEWOULDBLOCK : x := 'WSAEWOULDBLOCK';
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| 385 | WSAEINPROGRESS : x := 'WSAEINPROGRESS';
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| 386 | WSAEALREADY : x := 'WSAEALREADY';
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| 387 | WSAENOTSOCK : x := 'WSAENOTSOCK';
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| 388 | WSAEDESTADDRREQ : x := 'WSAEDESTADDRREQ';
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| 389 | WSAEMSGSIZE : x := 'WSAEMSGSIZE';
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| 390 | WSAEPROTOTYPE : x := 'WSAEPROTOTYPE';
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| 391 | WSAENOPROTOOPT : x := 'WSAENOPROTOOPT';
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| 392 | WSAEPROTONOSUPPORT : x := 'WSAEPROTONOSUPPORT';
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| 393 | WSAESOCKTNOSUPPORT : x := 'WSAESOCKTNOSUPPORT';
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| 394 | WSAEOPNOTSUPP : x := 'WSAEOPNOTSUPP';
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| 395 | WSAEPFNOSUPPORT : x := 'WSAEPFNOSUPPORT';
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| 396 | WSAEAFNOSUPPORT : x := 'WSAEAFNOSUPPORT';
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| 397 | WSAEADDRINUSE : x := 'WSAEADDRINUSE';
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| 398 | WSAEADDRNOTAVAIL : x := 'WSAEADDRNOTAVAIL';
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| 399 | WSAENETDOWN : x := 'WSAENETDOWN';
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| 400 | WSAENETUNREACH : x := 'WSAENETUNREACH';
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| 401 | WSAENETRESET : x := 'WSAENETRESET';
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| 402 | WSAECONNABORTED : x := 'WSAECONNABORTED';
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| 403 | WSAECONNRESET : x := 'WSAECONNRESET';
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| 404 | WSAENOBUFS : x := 'WSAENOBUFS';
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| 405 | WSAEISCONN : x := 'WSAEISCONN';
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| 406 | WSAENOTCONN : x := 'WSAENOTCONN';
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| 407 | WSAESHUTDOWN : x := 'WSAESHUTDOWN';
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| 408 | WSAETOOMANYREFS : x := 'WSAETOOMANYREFS';
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| 409 | WSAETIMEDOUT : x := 'WSAETIMEDOUT';
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| 410 | WSAECONNREFUSED : x := 'WSAECONNREFUSED';
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| 411 | WSAELOOP : x := 'WSAELOOP';
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| 412 | WSAENAMETOOLONG : x := 'WSAENAMETOOLONG';
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| 413 | WSAEHOSTDOWN : x := 'WSAEHOSTDOWN';
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| 414 | WSAEHOSTUNREACH : x := 'WSAEHOSTUNREACH';
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| 415 | WSAENOTEMPTY : x := 'WSAENOTEMPTY';
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| 416 | WSAEPROCLIM : x := 'WSAEPROCLIM';
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| 417 | WSAEUSERS : x := 'WSAEUSERS';
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| 418 | WSAEDQUOT : x := 'WSAEDQUOT';
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| 419 | WSAESTALE : x := 'WSAESTALE';
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| 420 | WSAEREMOTE : x := 'WSAEREMOTE';
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| 421 | WSASYSNOTREADY : x := 'WSASYSNOTREADY';
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| 422 | WSAVERNOTSUPPORTED : x := 'WSAVERNOTSUPPORTED';
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| 423 | WSANOTINITIALISED : x := 'WSANOTINITIALISED';
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| 424 | WSAHOST_NOT_FOUND : x := 'WSAHOST_NOT_FOUND';
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| 425 | WSATRY_AGAIN : x := 'WSATRY_AGAIN';
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| 426 | WSANO_RECOVERY : x := 'WSANO_RECOVERY';
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| 427 | WSANO_DATA : x := 'WSANO_DATA';
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| 428 |
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| 429 | else x := 'Unknown Error';
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| 430 | end;
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| 431 | Result := x + ' (' + IntToStr(r) + ')';
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| 432 | end;
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| 433 |
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| 434 |
|
|---|
| 435 | end.
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