/* * Copyright (c) 1999-2001, 2003 Todd C. Miller * * 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. * 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 #include #include #ifdef STDC_HEADERS # include # include #else # ifdef HAVE_STDLIB_H # include # endif #endif /* STDC_HEADERS */ #ifdef HAVE_STRING_H # include #else # ifdef HAVE_STRINGS_H # include # endif #endif /* HAVE_STRING_H */ #ifdef HAVE_UNISTD_H # include #endif /* HAVE_UNISTD_H */ #include #include #include "sudo.h" #include "sudo_auth.h" #ifndef lint static const char rcsid[] = "$Sudo: sia.c,v 1.14 2004/02/13 21:36:47 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_passwd_timeout * 60) timeout = def_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); }