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皮皮勒 发表于 2006-8-29 01:04

用C++ Builderw做Ftp服务器程序

#include     //Required for atoi()
r9j G:mA|p!bR$i!ZP8PK"m #include "..\winsock.h"  //Winsock header filek;e4Gu
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#define PROG_NAME    "Quick FTP Version 1":G H K;\Gp3m}
#define HOST_NAME    "NIC.DDN.MIL "     // FTP server host
td&XDvK+F#F~1at-l #define PASSWORD     "PASS guest\r\n "  // Password for FTP server host W!QK:Fz9f.S7EL@4q
#define WINSOCK_VERSION   0x0101     // Program requires Winsock version 1.1 5G&d$Aq"Y
#define DEFAULT_PROTOCOL  0          // No protocol specified, use default
7p5OrO^Ux,FQ9C #define NO_FLAGS     0               // No special flags specified jtn
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char szCommandBuffer[100];     // Buffer for FTP commands +\f{d9b1K|'~
LPSTR lpszFunctionName;        // Pointer for function names
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UINT GetReplyCode(LPSTR lpszServerReply)
H%mhK(s0u%D {
b@yf?/mS
C#b   UINT nCode;                  // Reply code as a number dJaIS"n3w b
  char c;                    // Temporary storage
'n)zD ^d(bH3V   // lpszFunctionName =  "GetReplyCode "; 1~c+Q2ad
  c = *(lpszServerReply+3);           // Save the character tf!r8YSJ
  *(lpszServerReply+3) = '\0';         // Terminate the code
tW;n-l n] *MQC
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  nCode = atoi((const char *)lpszServerReply); // Convert code to number yU]9s#}'p
  *(lpszServerReply+3) = c;           // Restore the character L5DZ%T2n})W6g
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  return(nCode);                // Return the reply code
;N#v3Ux"E*fpGONJ7E }
&~.H8kR%q,AGEq%W-F!G
b9y:|/T"Q?"R UINT ReadFTPServerReply(SOCKET hControlChannel)
]/U'Z+H!ia {
(fs(?q?l-kZRD   char sReceiveBuffer[1024]; // Data-storage buffer for FTP server reply 2g0TN+i;n1S,cP
  int iLength;        // Length of data received from FTP server
Wm5}UD    
1L3z%W a"YB'vB   lpszFunctionName =  "ReadFTPServerReply "; `;b5B-h+QO-S({
4}8L3t*X.{2`
    if ((iLength = recv(hControlChannel, (LPSTR)sReceiveBuffer,  !EHy$P(Wf$v
       sizeof(sReceiveBuffer), NO_FLAGS)) == SOCKET_ERROR)
&]uPk;[7T_     { %dI1mv2u#c}
    int iWinsockErr = WSAGetLastError();
~2{ A'H{;D     wsprintf(szCommandBuffer,"Error %d from the recv() function!! ",$G Z)['h @Hpa:B
       iWinsockErr);   
F%^R$Ac'yH ye]F     MessageBeep(MB_ICONHAND);
$r _9^(Lf~z     MessageBox(NULL, szCommandBuffer, lpszFunctionName,MB_OK |MB_ICONSTOP); )po~'iP
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     // Return 999 to indicate an error has occurred
/s,I-S'_X/WJc     return(999); "y+i.pK*m!}V&AE
   }  #DJIW2O(r
      sVS(^P6U
  sReceiveBuffer[iLength] = '\0'; v0ou9ptpr~
  MessageBeep(MB_ICONASTERISK);
){4{ z&N*jGj3|   MessageBox(NULL, (LPSTR)sReceiveBuffer, lpszFunctionName,MB_OK |MB_ICONINFORMATION);
]*xR2BP0m   // Extract the reply code from the server reply and return as an integer  c$pmj
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  return(GetReplyCode(sReceiveBuffer));    WQ"SF sQ o5J2j~
}
/QWvj'mi1t   
.L}'Zv4t UINT SendFTPCommand(SOCKET hControlChannel, LPSTR szCommandBuffer)
6W/|lg(N-u {
t7T/BEf|7v   lpszFunctionName =  "SendFTPCommand "; t#ZXrJ YM
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  // Send the FTP command TU&] d;\kvs
  if ((send(hControlChannel, (LPSTR)szCommandBuffer,  "i8CoV'H:T
     lstrlen(szCommandBuffer), NO_FLAGS)) == SOCKET_ERROR) hU3dS Dmyg`A8d
   { eZzo-q
    int iWinsockErr = WSAGetLastError(); -y#Xk+kz
    wsprintf(szCommandBuffer,  "Error %d from the send() function!! ",  (M6TIYJh5\9?c
       iWinsockErr);   
a8`0F?\1dqFH     MessageBeep(MB_ICONHAND);
H?S7^3y k+V     MessageBox(NULL, szCommandBuffer, lpszFunctionName,MB_OK |MB_ICONSTOP);
f U9OH{5{7x      // Return 999 to indicate an error has occurred 5OUf0z&` Y!A+X
    return(999);
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WH`&A    }  
Xl#TT5t7j    
+GSGfu   // Read the server's reply and return the reply code as an integer R&DO | nd-[0E+i
  return(ReadFTPServerReply(hControlChannel));   
I.tD6Ed0A }
`*Yfxs,]t   &J
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UINT AnonymousFTPLogIn(SOCKET hControlSocket)
z*Z8s@,ung`F { +o8D^[`uy3J8cQl7M
  int nReplyCode;         // FTP server reply code
:cg'h5c.Q1l   int iMsg = 0;          // Index subscript for FTP commands #H,?m&U
V!v!T9e$K
     P5]B8zKh"f+QsL2L6h
  lpszFunctionName =  "AnonymousFTPLogIn "; e1LZy"_,\B
  char *LoginCommand[]={"USER anonymous\r\n ",PASSWORD,NULL};
#_t:@ZUZ!ul
YF   do B4O*Ljv_{v
    { ,x.}_P3]{
    nReplyCode = SendFTPCommand(hControlSocket,(LPSTR)LoginCommand[iMsg++]);
(i[D T&R5B1Q&W^.z&}     }  9TVv;R!Hz4RI
  while(LoginCommand[iMsg] && nReplyCode s_port; 7RQ|f{BZy&J

x@0XfdV   // Define the socket address  WG?&R*g i`;umdnC~
  sockAddr.sin_family = AF_INET;   !C]|I4Slq[t%M!C
  sockAddr.sin_port = nProtocolPort;
DUD^n   sockAddr.sin_addr = *((LPIN_ADDR)*lpHostEnt- >h_addr_list); 0s_
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       'g
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  // Connect the socket
{eQN*{;B&J   if( nConnect = connect(hControlSocket, (LPSOCKADDR)&sockAddr,  ^ m/o3UBYx lX~
     sizeof(sockAddr)))
2N k3_goiCH$_    { "QU5x KAq
    int iWinsockErr = WSAGetLastError();
Q7^*v} D[
Z:i$C     wsprintf(szCommandBuffer, A:R2B_5c^+npw ])d
        "Error #%d occurred while connecting socket!! ",  ~p&V,u8@
       iWinsockErr); g:p%LGO*W/_E3y*pOM)o
    MessageBeep(MB_ICONHAND);

v?X[5_I     MessageBox(NULL, szCommandBuffer, lpszFunctionName,  @'Ro;h,l Me
       MB_OK |MB_ICONSTOP); ?&J3u0VR `
    return(INVALID_SOCKET);
0^3Q.e_&q0I6~,c    }
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^M-B    
9LB$WF2VB   if (ReadFTPServerReply(hControlSocket)  >= 400) H%Z(F/y
KH5L _I
   return(INVALID_SOCKET); *n]+}s{P.t%K
  else v)u$Gs5I1BWH#\YL
   return(hControlSocket); g3}DmL}M n
}
J!uGs j"vD.n
:yDl\_gl3q.`0I int PASCAL WinMain(HANDLE hInstance, HANDLE hPrevInstance,  
M&x|!uMuht3Cl(j    LPSTR lpszCmdParam, int nCmdShow) #\Hv(['c5^`a;n@6y
{ pk1y&R dR.N Y+^)Q
  WSADATA wsaData;       // Winsock implementation details 'V#f? qvc
  SOCKET hControlChannel;    // Socket handle for the control channel V2y M0E-}C:{5_
  UINT nReplyCode;       // FTP reply code ,Z bJuM0M5k
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  lpszFunctionName =  "WinMain ";
LgeCZv3\%Ad    -~zJ#b%d _F
  if (WSAStartup(WINSOCK_VERSION, &wsaData)) :cDq_w~0o;n
   {
0n4iV%t3?S2\/Xq5Q6s     MessageBeep(MB_ICONHAND);
or YG'I-WG[R     MessageBox(NULL,  "Could not load Windows Sockets DLL. ",  )K}`Q%@'U
       lpszFunctionName, MB_OK |MB_ICONSTOP); VE(y"`t
    return(NULL); /Y5x.l6Ml?*O
   }
ny+h0weh,q       
$wH8xr%mP%F.I/g xT   hControlChannel = ConnectFTPControlSocket((LPSTR)HOST_NAME); Q{Wh9`+P6e5by)H
  // Note that from a DLL, here we would return  
t"B|]j7Fxl6n   // our control channel handle (if valid) for  
W|i*S!v%P   // use by other program modules.
~ y#\7v:g
Nw'xoq,A   if (hControlChannel != INVALID_SOCKET)
2L4y:[K!MA"^    {
M[p(?n(n     // If we have a control channel, then login. `6e~o)PQvrnM
    nReplyCode = AnonymousFTPLogIn(hControlChannel); /s)E*J Q-^7u
RaM
        *f5X2wfu Do6BD
    if (nReplyCode == 230) // User logged in; we can proceed.
S,|O+D"r#B-\DL*SL      {
\y1V:@,D4r\v       SendFTPCommand(hControlChannel,  "QUIT\r\n "); 9YR
n jiKSp
      closesocket(hControlChannel); /kK)u3~6g}!S9n
     } K(N2d-b\+s5hb(^L
   } a6e$t uS&o,u
   r'V%m%t%i%cO
  WSACleanup();
.e/ka;H#z6s)kX9a7K A   MessageBeep(MB_ICONEXCLAMATION);
K/BE~7`Um4n5b-@.B   MessageBox(NULL,  "THE END!! ", PROG_NAME, MB_OK |MB_ICONEXCLAMATION); L&olw7j)}6~%ay
  return(NULL);  M;C c)HB)k:cZ
}

zbj521money 发表于 2007-4-24 23:57

支持下! _gY(?k
要是注释是汉语就好了!
Argb;ddSB.R"\2L 谢谢

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