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/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 1999-2005, 2007, 2010-2012, 2014-2016
* Todd C. Miller <Todd.Miller@sudo.ws>
* Copyright (c) 2002 Michael Stroucken <michael@stroucken.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#ifdef HAVE_SECURID
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pwd.h>
/* Needed for SecurID v5.0 Authentication on UNIX */
#define UNIX 1
#include <acexport.h>
#include <sdacmvls.h>
#include <sudoers.h>
#include "sudo_auth.h"
/*
* securid_init - Initialises communications with ACE server
* Arguments in:
* pw - UNUSED
* auth - sudo authentication structure
*
* Results out:
* auth - auth->data contains pointer to new SecurID handle
* return code - Fatal if initialization unsuccessful, otherwise
* success.
*/
int
sudo_securid_init(const struct sudoers_context *ctx, struct passwd *pw,
sudo_auth *auth)
{
static SDI_HANDLE sd_dat; /* SecurID handle */
debug_decl(sudo_securid_init, SUDOERS_DEBUG_AUTH);
/* Only initialize once. */
if (auth->data != NULL)
debug_return_int(AUTH_SUCCESS);
if (IS_NONINTERACTIVE(auth))
debug_return_int(AUTH_NONINTERACTIVE);
/* Start communications */
if (AceInitialize() == SD_FALSE) {
sudo_warnx("%s", U_("failed to initialise the ACE API library"));
debug_return_int(AUTH_ERROR);
}
auth->data = (void *) &sd_dat; /* For method-specific data */
debug_return_int(AUTH_SUCCESS);
}
/*
* securid_setup - Initialises a SecurID transaction and locks out other
* ACE servers
*
* Arguments in:
* pw - struct passwd for username
* promptp - UNUSED
* auth - sudo authentication structure for SecurID handle
*
* Results out:
* return code - Success if transaction started correctly, fatal
* otherwise
*/
int
sudo_securid_setup(const struct sudoers_context *ctx, struct passwd *pw,
char **promptp, sudo_auth *auth)
{
SDI_HANDLE *sd = (SDI_HANDLE *) auth->data;
int retval;
debug_decl(sudo_securid_setup, SUDOERS_DEBUG_AUTH);
/* Re-initialize SecurID every time. */
if (SD_Init(sd) != ACM_OK) {
sudo_warnx("%s", U_("unable to contact the SecurID server"));
debug_return_int(AUTH_ERROR);
}
/* Lock new PIN code */
retval = SD_Lock(*sd, pw->pw_name);
switch (retval) {
case ACM_OK:
sudo_warnx("%s", U_("User ID locked for SecurID Authentication"));
debug_return_int(AUTH_SUCCESS);
case ACE_UNDEFINED_USERNAME:
sudo_warnx("%s", U_("invalid username length for SecurID"));
debug_return_int(AUTH_ERROR);
case ACE_ERR_INVALID_HANDLE:
sudo_warnx("%s", U_("invalid Authentication Handle for SecurID"));
debug_return_int(AUTH_ERROR);
case ACM_ACCESS_DENIED:
sudo_warnx("%s", U_("SecurID communication failed"));
debug_return_int(AUTH_ERROR);
default:
sudo_warnx("%s", U_("unknown SecurID error"));
debug_return_int(AUTH_ERROR);
}
}
/*
* securid_verify - Authenticates user and handles ACE responses
*
* Arguments in:
* pw - struct passwd for username
* prompt - UNUSED
* auth - sudo authentication structure for SecurID handle
*
* Results out:
* return code - Success on successful authentication, failure on
* incorrect authentication, fatal on errors
*/
int
sudo_securid_verify(const struct sudoers_context *ctx, struct passwd *pw,
const char *promp, sudo_auth *auth, struct sudo_conv_callback *callback)
{
SDI_HANDLE *sd = (SDI_HANDLE *) auth->data;
char *pass;
int ret;
debug_decl(sudo_securid_verify, SUDOERS_DEBUG_AUTH);
pass = auth_getpass("Enter your PASSCODE: ", SUDO_CONV_PROMPT_ECHO_OFF,
callback);
/* Have ACE verify password */
switch (SD_Check(*sd, pass, pw->pw_name)) {
case ACM_OK:
ret = AUTH_SUCESS;
break;
case ACE_UNDEFINED_PASSCODE:
sudo_warnx("%s", U_("invalid passcode length for SecurID"));
ret = AUTH_ERROR;
break;
case ACE_UNDEFINED_USERNAME:
sudo_warnx("%s", U_("invalid username length for SecurID"));
ret = AUTH_ERROR;
break;
case ACE_ERR_INVALID_HANDLE:
sudo_warnx("%s", U_("invalid Authentication Handle for SecurID"));
ret = AUTH_ERROR;
break;
case ACM_ACCESS_DENIED:
ret = AUTH_FAILURE;
break;
case ACM_NEXT_CODE_REQUIRED:
/* Sometimes (when current token close to expire?)
ACE challenges for the next token displayed
(entered without the PIN) */
if (pass != NULL)
freezero(pass, strlen(pass));
pass = auth_getpass("\
!!! ATTENTION !!!\n\
Wait for the token code to change, \n\
then enter the new token code.\n", \
SUDO_CONV_PROMPT_ECHO_OFF, callback);
if (SD_Next(*sd, pass) == ACM_OK) {
ret = AUTH_SUCCESS;
break;
}
ret = AUTH_FAILURE;
break;
case ACM_NEW_PIN_REQUIRED:
/*
* This user's SecurID has not been activated yet,
* or the pin has been reset
*/
/* XXX - Is setting up a new PIN within sudo's scope? */
SD_Pin(*sd, "");
sudo_printf(SUDO_CONV_ERROR_MSG|SUDO_CONV_PREFER_TTY,
"Your SecurID access has not yet been set up.\n");
sudo_printf(SUDO_CONV_ERROR_MSG|SUDO_CONV_PREFER_TTY,
"Please set up a PIN before you try to authenticate.\n");
ret = AUTH_ERROR;
break;
default:
sudo_warnx("%s", U_("unknown SecurID error"));
ret = AUTH_ERROR;
break;
}
/* Free resources */
SD_Close(*sd);
if (pass != NULL)
freezero(pass, strlen(pass));
/* Return stored state to calling process */
debug_return_int(ret);
}
#endif /* HAVE_SECURID */
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