2 * Copyright (c) 1999-2005, 2010
3 * Todd C. Miller <Todd.Miller@courtesan.com>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * Sponsored in part by the Defense Advanced Research Projects
18 * Agency (DARPA) and Air Force Research Laboratory, Air Force
19 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
24 #include <sys/types.h>
25 #include <sys/param.h>
34 #endif /* STDC_HEADERS */
37 #endif /* HAVE_STRING_H */
40 #endif /* HAVE_STRINGS_H */
43 #endif /* HAVE_UNISTD_H */
47 #include "sudo_auth.h"
50 #define HAS_AGEINFO(p, l) (l == 18 && p[DESLEN] == ',')
53 passwd_init(pw, promptp, auth)
58 #ifdef HAVE_SKEYACCESS
59 if (skeyaccess(pw, user_tty, NULL, NULL) == 0)
66 passwd_verify(pw, pass, auth)
75 pw_len = strlen(pw->pw_passwd);
77 #ifdef HAVE_GETAUTHUID
78 /* Ultrix shadow passwords may use crypt16() */
79 error = strcmp(pw->pw_passwd, (char *) crypt16(pass, pw->pw_passwd));
82 #endif /* HAVE_GETAUTHUID */
85 * Truncate to 8 chars if standard DES since not all crypt()'s do this.
86 * If this turns out not to be safe we will have to use OS #ifdef's (sigh).
89 if (pw_len == DESLEN || HAS_AGEINFO(pw->pw_passwd, pw_len))
93 * Normal UN*X password check.
94 * HP-UX may add aging info (separated by a ',') at the end so
95 * only compare the first DESLEN characters in that case.
97 epass = (char *) crypt(pass, pw->pw_passwd);
99 if (HAS_AGEINFO(pw->pw_passwd, pw_len) && strlen(epass) == DESLEN)
100 error = strncmp(pw->pw_passwd, epass, DESLEN);
102 error = strcmp(pw->pw_passwd, epass);
104 return(error ? AUTH_FAILURE : AUTH_SUCCESS);