int EnterPassiveMode(CFtpParam& ftpParam)
{
CString strCmd = "PASV\r\n";
CString strMessage = _T("");
if(FTP_COMMAND(ftpParam.ctrlSocket, strCmd, strMessage) < 0)
return 1;
int index = 0, index2 = 0;
index = strMessage.Find('(', 0);
index2 = strMessage.Find(')', 0);
CString strMid = strMessage.Mid(index + 1, index2 - index - 1);
int s1, s2, s3, s4, s5, s6;
if(sscanf(strMid, "%d,%d,%d,%d,%d,%d", &s1, &s2, &s3, &s4, &s5, &s6) != 6)
return 1;
sprintf(ftpParam.remote_host, "%d.%d.%d.%d", s1, s2, s3, s4);
ftpParam.remote_port = s5 * 256 + s6;
return 0;
}
int fd; /*! persistent open file descriptor between callbacks */
};
};
/*! ftp command descriptor */
typedef struct ftp_command
{
const char *name; /*!< command name */
int (*handler)(ftp_session_t*, const char*); /*!< command callback */
} ftp_command_t;
static ftp_command_t ftp_commands[] =
{
#define FTP_COMMAND(x) { #x, x, }
#define FTP_ALIAS(x,y) { #x, y, }
FTP_COMMAND(ALLO),
FTP_COMMAND(APPE),
FTP_COMMAND(CDUP),
FTP_COMMAND(CWD),
FTP_COMMAND(DELE),
FTP_COMMAND(FEAT),
FTP_COMMAND(LIST),
FTP_COMMAND(MKD),
FTP_COMMAND(MODE),
FTP_COMMAND(NLST),
FTP_COMMAND(NOOP),
FTP_COMMAND(OPTS),
FTP_COMMAND(PASS),
FTP_COMMAND(PASV),
FTP_COMMAND(PORT),
FTP_COMMAND(PWD),
int OpenControlChannel(char *hostname, int port, char *username, char *password, int timeout, char *retrfile,
int ptype, char *pserver, int pport, char *puid, char *ppwd, char *szReturn, CFtpParam& ftpParam)
{
struct sockaddr_in sa;
struct hostent *hp;
char buffer[1024] = {0};
int ret = 0;
CString strCmd = _T("");
CString strMessage = _T("");
if(*pserver)
{
// Use Proxy
switch(ptype)
{
case 0:
// Common Proxy
hp = gethostbyname(pserver);
if(!hp)
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_PROXY",
"PROXY_DOMAIN_NAME_PARSER_ERROR"));//<%IDS_FTP_1%>
return 1;
}
memcpy(&sa.sin_addr,hp->h_addr_list[0],hp->h_length);
sa.sin_family = AF_INET;
sa.sin_port=htons(pport);
if (connect_timeo(ftpParam.ctrlSocket, (struct sockaddr *)&sa, sizeof(sa), timeout))
{
shutdown(ftpParam.ctrlSocket, 0x02);
closesocket(ftpParam.ctrlSocket);
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_PROXY",
"PROXY_CONNECT_FAILED"));//<%IDS_FTP_2%>
return 1;
}
break;
case 1:
// Socks5 Proxy
if(socks5_protocol(ftpParam.ctrlSocket, hostname, port, pserver, pport, puid, ppwd, timeout))
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_PROXY",
"PROXY_SERVER_ERROR"));//<%IDS_FTP_3%>
return 1;
}
break;
default:
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_UNKNOWN_PROXY_TYPE"));//<%IDS_FTP_4%>
return 1;
}
}
else
{
// Direct Connect
hp = gethostbyname(hostname);
if(!hp)
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_DNS",
"DNS_DOMAIN_NAME_PARSE_ERROR"));//<%IDS_FTP_5%>
return 1;
}
memcpy(&sa.sin_addr,hp->h_addr_list[0],hp->h_length);
sa.sin_family = AF_INET;
sa.sin_port=htons(port);
if (connect_timeo(ftpParam.ctrlSocket, (struct sockaddr *)&sa, sizeof(sa), timeout))
{
shutdown(ftpParam.ctrlSocket, 0x02);
closesocket(ftpParam.ctrlSocket);
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_CONNET_FAILED"));//<%IDS_FTP_6%>
return 1;
}
}
CString retMsg = _T("");
if(WaitVersionInfo(ftpParam.ctrlSocket, timeout))
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_WAIT_INIT_INFO_TIMEOUT"));//<%IDS_FTP_7%>
return 1;
}
// Send USER Command
if(*pserver && ptype == 0)
strCmd.Format("USER %s@%s\r\n", username, hostname);
else
strCmd.Format("USER %s\r\n", username);
ret = FTP_COMMAND(ftpParam.ctrlSocket, strCmd, strMessage);
if(ret != 2 && ret != 3)
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_SEND_USERNAME_FAILED"));//<%IDS_FTP_8%>
return 1;
}
// Send PASS Command
strCmd.Format("PASS %s\r\n", password);
ret = FTP_COMMAND(ftpParam.ctrlSocket, strCmd, strMessage);
if(ret != 2 && ret != 3)
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_SEND_PWD_FAILED"));//<%IDS_FTP_9%>
return 1;
}
// Binary Mode
strCmd = "TYPE I\r\n";
ret = FTP_COMMAND(ftpParam.ctrlSocket, strCmd, strMessage);
if(ret != 2 && ret != 3)
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_APPLY_BINARY_MODE_ERROR"));//<%IDS_FTP_10%>
return 1;
}
if(ftpParam.passive_mode)
{
// Passive Mode
if(EnterPassiveMode(ftpParam))
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_APPLY_PASSIVITY_MODE_ERROR"));//<%IDS_FTP_11%>
return 1;
}
}
else
{
int Count = 0;
while(1)
{
ftpParam.local_port = rand() % 55536 + 10000;
sa.sin_family = AF_INET;
sa.sin_addr.s_addr = htonl(INADDR_ANY);
sa.sin_port=htons(ftpParam.local_port);
if(bind(ftpParam.dataSocket, (struct sockaddr *)&sa, sizeof(sa)) == SOCKET_ERROR)
{
if(Count < 5)
{
Count ++;
continue;
}
else
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_LOCATE_BIND_ERROR"));//<%IDS_FTP_12%>
return 1;
}
}
if(listen(ftpParam.dataSocket, 10) == SOCKET_ERROR)
{
if(Count < 5)
{
Count ++;
continue;
}
else
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_LOCATE_CREATE_COMMUNICATE_ERROR"));//<%IDS_FTP_13%>
return 1;
}
}
break;
}
struct sockaddr_in lsa;
int salen = sizeof(lsa);
if(getsockname(ftpParam.ctrlSocket, (struct sockaddr *)&lsa, &salen) == SOCKET_ERROR)
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_GET_LOCATE_INFO_ERROR"));//<%IDS_FTP_14%>
return 1;
}
strcpy(ftpParam.local_host, inet_ntoa(lsa.sin_addr));
strCmd.Format("PORT %s,%d,%d\r\n", ftpParam.local_host, ftpParam.local_port/256, ftpParam.local_port%256);
strCmd.Replace('.', ',');
ret = FTP_COMMAND(ftpParam.ctrlSocket, strCmd, strMessage);
if(ret < 0 || ret != 2)
{
if(!ftpParam.passive_mode)
{
//closesocket(dataSocket);
ftpParam.passive_mode = 1;
if(EnterPassiveMode(ftpParam))
{
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_APPLY_PASSIVITY_MODE_ERROR"));//<%IDS_FTP_15%>
return 1;
}
}
}
}
if(strlen(retrfile) > 0)
{
strCmd.Format("RETR %s\r\n", retrfile);
WriteString(ftpParam.ctrlSocket, strCmd);
ret = ReadString2(ftpParam.ctrlSocket,buffer);
if(ret != 1 && ret != 2 && ret != 3 && ret != 9)
{
if(ret == 5)
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_FILE_NOT_FOUND"));//<%IDS_FTP_16%>
else
sprintf(szReturn, "error=%s$", FuncGetStringFromIDS("SV_FTP",
"FTP_UNKNOWN_ERROR"));//<%IDS_FTP_17%>
return 1;
}
}
return 0;
}
