(MFC) SCP Download Text File to String Variable

Downloads a file using the SCP protocol (Secure Copy Protocol over SSH), from a specific remote directory located on the SSH server directly into a string variable.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkSsh.h>
#include <CkScp.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkSsh ssh;

    // Hostname may be an IP address or hostname:
    const char *hostname = "www.some-ssh-server.com";
    int port = 22;

    // Connect to an SSH server:
    bool success = ssh.Connect(hostname,port);
    if (success != true) {
        strOut.append(ssh.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Wait a max of 5 seconds when reading responses..
    ssh.put_IdleTimeoutMs(5000);

    // Authenticate using login/password:
    success = ssh.AuthenticatePw("myLogin","myPassword");
    if (success != true) {
        strOut.append(ssh.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Once the SSH object is connected and authenticated, we use it
    // in our SCP object.
    CkScp scp;

    success = scp.UseSsh(ssh);
    if (success != true) {
        strOut.append(scp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // This downloads a file from the "repositor/xml/" subdirectory (relative to the SSH user account's HOME directory).  
    const char *remotePath = "repository/xml/hamlet.xml";

    // The byte representation of the remote text file (i.e. the charset) must be
    // indicated to allow the receiving software to correctly interpret the incoming
    // bytes as the correct chars.
    // See https://www.chilkatsoft.com/p/p_463.asp for a list of valid charset names.
    const char *charset = "utf-8";

    const char *fileContents = scp.downloadString(remotePath,charset);
    if (scp.get_LastMethodSuccess() != true) {
        strOut.append(scp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("Received file:");
    strOut.append("\r\n");
    strOut.append(fileContents);
    strOut.append("\r\n");

    strOut.append("SCP download string success.");
    strOut.append("\r\n");

    // Disconnect
    ssh.Disconnect();


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }