Method ResumeReceiveFilePASV

UTCP/src/ftp_c.cpp:623–752

ResumeReceiveFilePASV Resumes retrieving the specified file from the currently connected FTP site. The file is then saved to the specified destination file. This routine duplicates the ReceiveFile() member, but in this routine the client originates data connections. Client side origination of data connections is preferred for use in firewall controlled

    UTE_CONNECT_TIMEOUT             - connection timeout
****************************************/
int CUT_FTPClient::ResumeReceiveFilePASV(CUT_DataSource & dest, LPCSTR sourceFile) {

    UINT    loop;
    int     rt, error;
    char    responseBuf[100];
    int     port;
    char    ipAddress[20];
    char    *token;
    OpenMsgType fileType = UTM_OM_WRITING;  // by default we will write a file unless it exist
                                            // then we will append to it



    //send the port command
    Send("PASV\r\n");

    m_wsData.SSLSetReuseSession(SSLGetCurrentSession());

    // we need to get the full IP address and port number from the
    // PASV return line, so that we can originate the data connection.

    //check for a return of 2??, which indicates success
    rt = GetResponseCode( this, responseBuf, sizeof(responseBuf) );
    if(rt < 200 || rt >299)
        return OnError(UTE_PORT_FAILED);


    // find the first '(' in the response and then parse out
    // the address supplied by the server
    loop = 0;
    while ( loop < strlen(responseBuf) ){
        if ( responseBuf[loop] == '(' )
            break;
        loop++;
        }

    if ( loop == strlen(responseBuf) ) // we hit the end of the buffer
        return OnError(UTE_RETR_FAILED);

    // token out the ipaddress and port string
    token = strtok( &responseBuf[loop], "()" );

    // get the four portions of the ip address
    strcpy(ipAddress, strtok( token, ",)\r\n" ));
    strcat(ipAddress, ".");
    strcat(ipAddress, strtok( NULL, ",)\r\n" ));
    strcat(ipAddress, ".");
    strcat(ipAddress, strtok( NULL, ",)\r\n" ));
    strcat(ipAddress, ".");
    strcat(ipAddress, strtok( NULL, ",)\r\n" ));

    // get the two portions that make up the port number
    port = atoi( strtok(NULL, ",)\r\n") ) * 256;
    port += atoi( strtok(NULL, ",)\r\n") );

    // test the results to ensure everything is OK.
    if ( !IsIPAddress(ipAddress) )
        return OnError(UTE_SVR_DATA_CONNECT_FAILED);