154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/*
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* Copyright (c) 1999-2001 Todd C. Miller <Todd.Miller@courtesan.com>
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* All rights reserved.
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*
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* This code is derived from software contributed by Spider Boardman
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* 4. Products derived from this software may not be called "Sudo" nor
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* may "Sudo" appear in their names without specific prior written
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* permission from the author.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <stdio.h>
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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# include <stddef.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#include <pwd.h>
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#include <siad.h>
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#include "sudo.h"
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#include "sudo_auth.h"
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#ifndef lint
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static const char rcsid[] = "$Sudo$";
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#endif /* lint */
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static int sudo_collect __P((int, int, uchar_t *, int, prompt_t *));
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static char *def_prompt;
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/*
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* Collection routine (callback) for limiting the timeouts in SIA
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* prompts and (possibly) setting a custom prompt.
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*/
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static int
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sudo_collect(timeout, rendition, title, nprompts, prompts)
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int timeout;
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int rendition;
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uchar_t *title;
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int nprompts;
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prompt_t *prompts;
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{
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switch (rendition) {
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case SIAFORM:
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case SIAONELINER:
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if (timeout <= 0 || timeout > def_ival(I_PASSWD_TIMEOUT) * 60)
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timeout = def_ival(I_PASSWD_TIMEOUT) * 60;
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/*
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* Substitute custom prompt if a) the sudo prompt is not "Password:"
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* and b) the SIA prompt is "Password:" (so we know it is safe).
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* This keeps us from overwriting things like S/Key challenges.
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*/
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if (strcmp((char *)prompts[0].prompt, "Password:") == 0 &&
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strcmp(def_prompt, "Password:") != 0)
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prompts[0].prompt = (unsigned char *)def_prompt;
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break;
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default:
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break;
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}
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return sia_collect_trm(timeout, rendition, title, nprompts, prompts);
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}
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int
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sia_setup(pw, promptp, auth)
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struct passwd *pw;
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char **promptp;
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sudo_auth *auth;
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{
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SIAENTITY *siah = NULL;
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if (sia_ses_init(&siah, Argc, Argv, NULL, pw->pw_name, ttyname(0), 1, NULL)
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!= SIASUCCESS) {
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log_error(USE_ERRNO|NO_EXIT|NO_MAIL,
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"unable to initialize SIA session");
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return(AUTH_FATAL);
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}
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auth->data = (VOID *) siah;
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return(AUTH_SUCCESS);
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}
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int
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sia_verify(pw, prompt, auth)
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struct passwd *pw;
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char *prompt;
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sudo_auth *auth;
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{
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SIAENTITY *siah = (SIAENTITY *) auth->data;
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def_prompt = prompt; /* for sudo_collect */
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/* XXX - need a way to detect user hitting return or EOF at prompt */
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if (sia_ses_reauthent(sudo_collect, siah) == SIASUCCESS)
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return(AUTH_SUCCESS);
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else
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return(AUTH_FAILURE);
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}
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int
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sia_cleanup(pw, auth)
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struct passwd *pw;
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sudo_auth *auth;
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{
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SIAENTITY *siah = (SIAENTITY *) auth->data;
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(void) sia_ses_release(&siah);
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return(AUTH_SUCCESS);
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}
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