csu3_am335x/EVSE/GPL/linux-pam-1.5.2/xtests/tst-pam_unix1.c

/*
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 *    notice, this list of conditions and the following disclaimer in the
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 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * ALTERNATIVELY, this product may be distributed under the terms of
 * the GNU Public License, in which case the provisions of the GPL are
 * required INSTEAD OF the above restrictions.  (This clause is
 * necessary due to a potential bad interaction between the GPL and
 * the restrictions contained in a BSD-style copyright.)
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Test case: '!!' as password should not allow login
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <security/pam_appl.h>

/* A conversation function which uses an internally-stored value for
   the responses. */
static int
fake_conv (int num_msg, const struct pam_message **msgm UNUSED,
	   struct pam_response **response, void *appdata_ptr UNUSED)
{
  struct pam_response *reply;
  int count;

  /* Sanity test. */
  if (num_msg <= 0)
    return PAM_CONV_ERR;

  /* Allocate memory for the responses. */
  reply = calloc (num_msg, sizeof (struct pam_response));
  if (reply == NULL)
    return PAM_CONV_ERR;

  /* Each prompt elicits the same response. */
  for (count = 0; count < num_msg; ++count)
    {
      reply[count].resp_retcode = 0;
      reply[count].resp = strdup ("!!");
    }

  /* Set the pointers in the response structure and return. */
  *response = reply;
  return PAM_SUCCESS;
}

static struct pam_conv conv = {
    fake_conv,
    NULL
};


/* Check that errors of optional modules are ignored and that
   required modules after a sufficient one are not executed.  */

int
main(int argc, char *argv[])
{
  pam_handle_t *pamh=NULL;
  const char *user="tstpamunix";
  int retval;
  int debug = 0;

  if (argc > 1 && strcmp (argv[1], "-d") == 0)
    debug = 1;

  retval = pam_start("tst-pam_unix1", user, &conv, &pamh);
  if (retval != PAM_SUCCESS)
    {
      if (debug)
	fprintf (stderr, "pam_unix1: pam_start returned %d\n", retval);
      return 1;
    }

  /* !! as password should not allow login */
  retval = pam_authenticate (pamh, 0);
  if (retval != PAM_AUTH_ERR)
    {
      if (debug)
	fprintf (stderr, "pam_unix1: pam_authenticate returned %d\n", retval);
      return 1;
    }

  retval = pam_end (pamh,retval);
  if (retval != PAM_SUCCESS)
    {
      if (debug)
	fprintf (stderr, "pam_unix1: pam_end returned %d\n", retval);
      return 1;
    }
  return 0;
}