Write Bytes to a Remote SFTP File (BinData)

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Demonstrates the Chilkat SFtp.WriteFileBd method, which appends all bytes in a BinData to the remote file identified by an open handle. The first argument is the handle and the second is the BinData.

Note: This example uses a relative local path, which is resolved against the application's current working directory. Absolute local paths may also be used. Supply the path appropriate to your own environment.

#include <C_CkSFtp.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSFtp sftp;
    int port;
    const char *password;
    const char *handle;
    HCkBinData bd;

    success = FALSE;

    //  Demonstrates the SFtp.WriteFileBd method, which appends all bytes in a BinData to the remote
    //  file identified by an open handle.  The 1st argument is the handle and the 2nd is the BinData.

    sftp = CkSFtp_Create();

    //  Connect, authenticate, and initialize the SFTP subsystem.
    port = 22;
    success = CkSFtp_Connect(sftp,"sftp.example.com",port);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        return;
    }

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    password = "mySshPassword";

    success = CkSFtp_AuthenticatePw(sftp,"mySshLogin",password);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        return;
    }

    success = CkSFtp_InitializeSftp(sftp);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        return;
    }

    //  Open (creating/truncating) the remote file for writing.
    handle = CkSFtp_openFile(sftp,"subdir/image.png","writeOnly","createTruncate");
    if (CkSFtp_getLastMethodSuccess(sftp) == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        return;
    }

    //  Put the bytes to write into a BinData.  (Here they are loaded from a local file, but the
    //  bytes could come from anywhere.)
    bd = CkBinData_Create();
    success = CkBinData_LoadFile(bd,"qa_data/image.png");
    if (success == FALSE) {
        printf("%s\n",CkBinData_lastErrorText(bd));
        CkSFtp_Dispose(sftp);
        CkBinData_Dispose(bd);
        return;
    }

    //  Append the BinData bytes to the open remote file.
    success = CkSFtp_WriteFileBd(sftp,handle,bd);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        CkBinData_Dispose(bd);
        return;
    }

    success = CkSFtp_CloseHandle(sftp,handle);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        CkBinData_Dispose(bd);
        return;
    }

    printf("Wrote %d bytes.\n",CkBinData_getNumBytes(bd));

    CkSFtp_Disconnect(sftp);


    CkSFtp_Dispose(sftp);
    CkBinData_Dispose(bd);

    }