Unicode C

Check if an FTP Listing Entry is a Symbolic Link

Demonstrates the Chilkat Ftp2.GetIsSymbolicLink method, which returns whether a cached directory-listing entry is a symbolic link. The only argument is a zero-based index. This information is available only when the server's listing format reports it.

Background: Symbolic links matter because following one can lead outside the expected directory or into a cycle, so recursive operations often need to identify and skip them. Unlike the file/directory distinction, symlink information is not always present — only listing formats that mark links (typically Unix-style LIST output) expose it, and this returns false when the server does not.

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Unicode C

#include <C_CkFtp2W.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkFtp2W ftp;
    int n;
    int i;
    const wchar_t *name;

    success = FALSE;

    //  Demonstrates the Ftp2.GetIsSymbolicLink method, which returns whether a cached directory-listing
    //  entry is a symbolic link.  The only argument is a zero-based index.  This information is only
    //  available when the server's listing format reports it.

    ftp = CkFtp2W_Create();

    CkFtp2W_putHostname(ftp,L"ftp.example.com");
    CkFtp2W_putUsername(ftp,L"myFtpLogin");

    //  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.
    CkFtp2W_putPassword(ftp,L"myPassword");

    success = CkFtp2W_Connect(ftp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkFtp2W_lastErrorText(ftp));
        CkFtp2W_Dispose(ftp);
        return;
    }

    success = CkFtp2W_ChangeRemoteDir(ftp,L"public_html");
    if (success == FALSE) {
        wprintf(L"%s\n",CkFtp2W_lastErrorText(ftp));
        CkFtp2W_Dispose(ftp);
        return;
    }

    //  GetDirCount retrieves the directory listing on the first call and returns the number of
    //  entries.  A negative return indicates failure.
    n = CkFtp2W_GetDirCount(ftp);
    if (n < 0) {
        wprintf(L"%s\n",CkFtp2W_lastErrorText(ftp));
        CkFtp2W_Dispose(ftp);
        return;
    }

    for (i = 0; i <= n - 1; i++) {
        name = CkFtp2W_getFilename(ftp,i);
        if (CkFtp2W_GetIsSymbolicLink(ftp,i)) {
            wprintf(L"[LINK] %s\n",name);
        }
        else {
            wprintf(L"       %s\n",name);
        }

    }

    success = CkFtp2W_Disconnect(ftp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkFtp2W_lastErrorText(ftp));
        CkFtp2W_Dispose(ftp);
        return;
    }



    CkFtp2W_Dispose(ftp);

    }