30fe4a067c
Set adminstrative domain for the process when looking up user's
password or group info and when preparing for execve().
Include strings.h even if string.h exists since they may define
different things. Fixes warnings on AIX and others.
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/*
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* Copyright (c) 1999-2005, 2007, 2010
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* Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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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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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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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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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_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 "sudoers.h"
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#include "sudo_auth.h"
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static int sudo_collect(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(int timeout, int rendition, uchar_t *title, 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_passwd_timeout * 60)
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timeout = def_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(struct passwd *pw, char **promptp, sudo_auth *auth)
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{
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SIAENTITY *siah = NULL;
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extern int Argc;
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extern char **Argv;
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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(struct passwd *pw, char *prompt, 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(struct passwd *pw, 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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