(C) AWS Transfer for SFTP (Amazon S3)

Once you've setup your AWS Transfer for SFTP in the AWS Console, interacting with it is no different than any other SSH/SFTP server. AWS will provide a private key in PEM format. It is used for authentication (instead of a password).

For more information, see https://docs.aws.amazon.com/transfer/latest/userguide/getting-started-use-the-service.html

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkSFtp.h>
#include <C_CkSshKey.h>

void ChilkatSample(void)
    {
    HCkSFtp sftp;
    const char *domain;
    int port;
    BOOL success;
    HCkSshKey sshKey;
    const char *keyText;
    const char *remoteFilePath;
    const char *localFilePath;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    sftp = CkSFtp_Create();

    // Connect to the AWS SFTP server.
    // Change the domain to your value.
    domain = "s-123456df999999fab.server.transfer.eu-west-2.amazonaws.com";
    port = 22;
    success = CkSFtp_Connect(sftp,domain,port);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        return;
    }

    // Load your AWS SFTP private key PEM file..
    sshKey = CkSshKey_Create();
    keyText = CkSshKey_loadText(sshKey,"qa_data/pem/s3_sftp_privateKey.pem");
    if (CkSshKey_getLastMethodSuccess(sshKey) != TRUE) {
        printf("%s\n",CkSshKey_lastErrorText(sshKey));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(sshKey);
        return;
    }

    success = CkSshKey_FromOpenSshPrivateKey(sshKey,keyText);
    if (success == FALSE) {
        printf("%s\n",CkSshKey_lastErrorText(sshKey));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(sshKey);
        return;
    }

    // Authenticate with the SSH server using the private key.
    success = CkSFtp_AuthenticatePk(sftp,"myUsername",sshKey);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(sshKey);
        return;
    }

    // After authenticating, the SFTP subsystem must be initialized:
    success = CkSFtp_InitializeSftp(sftp);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(sshKey);
        return;
    }

    // Upload from the local file to the SSH server.
    // Important -- the remote filepath is the 1st argument,
    // the local filepath is the 2nd argument;
    remoteFilePath = "hamlet.xml";
    localFilePath = "c:/temp/hamlet.xml";

    success = CkSFtp_UploadFileByName(sftp,remoteFilePath,localFilePath);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(sshKey);
        return;
    }

    printf("Success.\n");


    CkSFtp_Dispose(sftp);
    CkSshKey_Dispose(sshKey);

    }