/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 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
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <config.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <security/pam_appl.h>
#include <security/pam_modules.h>
static const char *prompt = "myprompt:";
static const char *user = "itsme";
static int
login_conv (int num_msg, const struct pam_message **mesg,
struct pam_response **resp, void *appdata_ptr UNUSED)
{
struct pam_response *reply;
int count;
reply = calloc(num_msg, sizeof (struct pam_response));
if (reply == NULL)
return PAM_BUF_ERR;
for (count = 0; count < num_msg; count++)
{
reply[count].resp_retcode = 0;
reply[count].resp = NULL;
switch (mesg[count]->msg_style)
{
case PAM_PROMPT_ECHO_ON:
if (strcmp (mesg[count]->msg, prompt) != 0)
{
fprintf (stderr, "conv function called with wrong prompt: %s\n",
mesg[count]->msg);
exit (1);
}
reply[count].resp = strdup (user);
break;
default:
fprintf (stderr,
"pam_get_user calls conv function with unexpected msg style");
exit (1);
}
}
*resp = reply;
return PAM_SUCCESS;
}
int
main (void)
{
const char *service = "dummy";
const char *value;
struct pam_conv conv = { &login_conv, NULL};
pam_handle_t *pamh;
int retval;
/* 1: Call with NULL for every argument */
retval = pam_get_user (NULL, NULL, NULL);
if (retval == PAM_SUCCESS)
{
fprintf (stderr,
"tst-pam_get_user (NULL, NULL, NULL) returned PAM_SUCCESS\n");
return 1;
}
/* setup pam handle */
retval = pam_start (service, user, &conv, &pamh);
if (retval != PAM_SUCCESS)
{
fprintf (stderr, "pam_start (%s, %s, &conv, &pamh) returned %d\n",
service, user, retval);
return 1;
}
/* 2: Call with valid pamh handle but NULL for user */
retval = pam_get_user (pamh, NULL, NULL);
if (retval == PAM_SUCCESS)
{
fprintf (stderr,
"tst-pam_get_user (pamh, NULL, NULL) returned PAM_SUCCESS\n");
return 1;
}
/* 3: Call with valid pamh handle and valid user ptr */
retval = pam_get_user (pamh, &value, NULL);
if (retval != PAM_SUCCESS)
{
fprintf (stderr,
"tst-pam_get_user (pamh, &value, NULL) returned %d\n",
retval);
return 1;
}
if (strcmp (user, value) != 0)
{
fprintf (stderr,
"tst-pam_get_user (pamh, &value, NULL) mismatch:\n"
"expected: %s\n"
"got: %s\n", user, value);
return 1;
}
pam_end (pamh, 0);
/* setup pam handle without user */
retval = pam_start (service, NULL, &conv, &pamh);
if (retval != PAM_SUCCESS)
{
fprintf (stderr, "pam_start (%s, %s, &conv, &pamh) returned %d\n",
service, user, retval);
return 1;
}
/* 4: Call with valid pamh handle and valid user ptr */
retval = pam_get_user (pamh, &value, prompt);
if (retval != PAM_SUCCESS)
{
fprintf (stderr,
"tst-pam_get_user (pamh, &value, prompt) returned %d\n",
retval);
return 1;
}
if (strcmp (user, value) != 0)
{
fprintf (stderr,
"tst-pam_get_user (pamh, &value, prompt) mismatch:\n"
"expected: %s\n"
"got: %s\n", user, value);
return 1;
}
pam_end (pamh, 0);
return 0;
}