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/*
* Copyright (c) 1999-2001, 2003 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* This code is derived from software contributed by Spider Boardman
*
* 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, this list of conditions and the following disclaimer.
*
* 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.
*
* 4. Products derived from this software may not be called "Sudo" nor
* may "Sudo" appear in their names without specific prior written
* permission from the author.
*
* 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.
*
* 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.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif /* STDC_HEADERS */
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
# include <strings.h>
# endif
#endif /* HAVE_STRING_H */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <pwd.h>
#include <siad.h>
#include "sudo.h"
#include "sudo_auth.h"
#ifndef lint
static const char rcsid[] = "$Sudo: sia.c,v 1.12 2003/04/16 00:42:10 millert Exp $";
#endif /* lint */
static int sudo_collect __P((int, int, uchar_t *, int, prompt_t *));
static char *def_prompt;
/*
* Collection routine (callback) for limiting the timeouts in SIA
* prompts and (possibly) setting a custom prompt.
*/
static int
sudo_collect(timeout, rendition, title, nprompts, prompts)
int timeout;
int rendition;
uchar_t *title;
int nprompts;
prompt_t *prompts;
{
switch (rendition) {
case SIAFORM:
case SIAONELINER:
if (timeout <= 0 || timeout > def_ival(I_PASSWD_TIMEOUT) * 60)
timeout = def_ival(I_PASSWD_TIMEOUT) * 60;
/*
* Substitute custom prompt if a) the sudo prompt is not "Password:"
* and b) the SIA prompt is "Password:" (so we know it is safe).
* This keeps us from overwriting things like S/Key challenges.
*/
if (strcmp((char *)prompts[0].prompt, "Password:") == 0 &&
strcmp(def_prompt, "Password:") != 0)
prompts[0].prompt = (unsigned char *)def_prompt;
break;
default:
break;
}
return sia_collect_trm(timeout, rendition, title, nprompts, prompts);
}
int
sia_setup(pw, promptp, auth)
struct passwd *pw;
char **promptp;
sudo_auth *auth;
{
SIAENTITY *siah = NULL;
extern int Argc;
extern char **Argv;
if (sia_ses_init(&siah, Argc, Argv, NULL, pw->pw_name, ttyname(0), 1, NULL)
!= SIASUCCESS) {
log_error(USE_ERRNO|NO_EXIT|NO_MAIL,
"unable to initialize SIA session");
return(AUTH_FATAL);
}
auth->data = (VOID *) siah;
return(AUTH_SUCCESS);
}
int
sia_verify(pw, prompt, auth)
struct passwd *pw;
char *prompt;
sudo_auth *auth;
{
SIAENTITY *siah = (SIAENTITY *) auth->data;
def_prompt = prompt; /* for sudo_collect */
/* XXX - need a way to detect user hitting return or EOF at prompt */
if (sia_ses_reauthent(sudo_collect, siah) == SIASUCCESS)
return(AUTH_SUCCESS);
else
return(AUTH_FAILURE);
}
int
sia_cleanup(pw, auth)
struct passwd *pw;
sudo_auth *auth;
{
SIAENTITY *siah = (SIAENTITY *) auth->data;
(void) sia_ses_release(&siah);
return(AUTH_SUCCESS);
}
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