/* Example using wrappi to access a remote server and read a file. */

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>

#include <wrappi.h>

int
main (int argc, char *argv[])
{
  wrap_h *w;
  const char *hostname;

  /* We're going to use ssh to access the remote server.  This is
   * automatic but we need a hostname on the command line.
   */
  if (argc < 2) {
    fprintf (stderr, "missing parameter: give the remote hostname\n");
    exit (EXIT_FAILURE);
  }
  hostname = argv[1];

  w = wrap_create ();
  if (!w) {
    fprintf (stderr, "could not allocate wrappi handle\n");
    exit (EXIT_FAILURE);
  }

  /* Set the connection method to ssh to the remote host.  If you
   * simply comment out the next two lines, then wrappi will run the
   * commands on the local machine.
   */
  wrap_set_scheme (w, WRAP_SCHEME_SSH);
  wrap_set_hostname (w, hostname);
#if 1
  wrap_set_wrappid_path (w, "/home/rjones/d/wrappi/daemon/wrappid");
#endif

  /* Connect the handle.  Because we didn't set any error handler,
   * errors will be printed on stderr, so we can just exit if we get
   * an error.
   */
  wrap_connect (w);
  if (wrap_error (w))
    exit (EXIT_FAILURE);

#if 0
  /* Read a file from the remote machine.  Most Un*x-like machines
   * should have /etc/issue.
   */
  printf ("--- contents of /etc/issue from %s ---\n", hostname);
  wrap_download (w, "/etc/issue", "/dev/stdout");
  if (wrap_error (w))
    exit (EXIT_FAILURE);
#else
  int64_t size = wrap_filesize (w, "/etc/issue");
  if (wrap_error (w))
    exit (EXIT_FAILURE);
  printf ("size of /etc/issue = %" PRIi64 " bytes\n", size);
#endif

  wrap_close (w);

  exit (EXIT_SUCCESS);
}