Unicode C++

Get a Remote File's Last-Access Time

Demonstrates the Chilkat SFtp.GetFileLastAccessStr method, which returns a remote file's last-access date and time. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.

Background: The access time is meant to update whenever a file is read, but in practice it is often unreliable: many systems mount filesystems with options like noatime to avoid a disk write on every read, so the value may not reflect recent reads. Treat it as a hint rather than an authoritative record of when a file was last opened.

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Unicode C++

#include <CkSFtpW.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the SFtp.GetFileLastAccessStr method, which returns a remote file's last-access
    //  date and time.  The 1st argument is the remote path (or handle), the 2nd selects whether
    //  symbolic links are followed, and the 3rd indicates whether the 1st argument is a handle.

    CkSFtpW sftp;

    //  Connect, authenticate, and initialize the SFTP subsystem.
    int port = 22;
    success = sftp.Connect(L"sftp.example.com",port);
    if (success == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        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.
    const wchar_t *password = L"mySshPassword";

    success = sftp.AuthenticatePw(L"mySshLogin",password);
    if (success == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    success = sftp.InitializeSftp();
    if (success == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    //  The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
    //  The 3rd argument (bIsHandle) is false here because the 1st argument is a path, not an
    //  open handle.
    bool bFollowLinks = true;
    bool bIsHandle = false;

    const wchar_t *lastAccess = sftp.getFileLastAccessStr(L"subdir/report.pdf",bFollowLinks,bIsHandle);
    if (sftp.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    wprintf(L"Last accessed: %s\n",lastAccess);

    sftp.Disconnect();
    }