plugins/zephyr/ZCkAuth.c@18c94e3947d5 (annotated)
plugins/zephyr/ZCkAuth.c
Fri, 27 Apr 2001 22:21:53 +0000
- author
- Eric Warmenhoven <warmenhoven@yahoo.com>
- date
- Fri, 27 Apr 2001 22:21:53 +0000
- changeset 1763
- 18c94e3947d5
- parent 1700
- 45175fd73d3f
- permissions
- -rw-r--r--
[gaim-migrate @ 1773]
la la la
| 1700 | 1 | /* This file is part of the Project Athena Zephyr Notification System. |
| 2 | * It contains source for the ZCheckAuthentication function. | |
| 3 | * | |
| 4 | * Created by: Robert French | |
| 5 | * | |
| 6 | * $Source$ | |
| 7 | * $Author: warmenhoven $ | |
| 8 | * | |
| 9 | * Copyright (c) 1987,1991 by the Massachusetts Institute of Technology. | |
| 10 | * For copying and distribution information, see the file | |
| 11 | * "mit-copyright.h". | |
| 12 | */ | |
| 13 | /* $Header$ */ | |
| 14 | ||
| 15 | #ifndef lint | |
| 16 | static char rcsid_ZCheckAuthentication_c[] = | |
| 17 | "$Zephyr: /mit/zephyr/src/lib/RCS/ZCheckAuthentication.c,v 1.14 89/03/24 14:17:38 jtkohl Exp Locker: raeburn $"; | |
| 18 | #endif | |
| 19 | ||
| 20 | #include <internal.h> | |
| 21 | ||
| 22 | /* Check authentication of the notice. | |
| 23 | If it looks authentic but fails the Kerberos check, return -1. | |
| 24 | If it looks authentic and passes the Kerberos check, return 1. | |
| 25 | If it doesn't look authentic, return 0 | |
| 26 | ||
| 27 | When not using Kerberos, return true if the notice claims to be authentic. | |
| 28 | Only used by clients; the server uses its own routine. | |
| 29 | */ | |
| 30 | Code_t ZCheckAuthentication(notice, from) | |
| 31 | ZNotice_t *notice; | |
| 32 | struct sockaddr_in *from; | |
| 33 | { | |
| 34 | #ifdef ZEPHYR_USES_KERBEROS | |
| 35 | int result; | |
| 36 | ZChecksum_t our_checksum; | |
| 37 | CREDENTIALS cred; | |
| 38 | ||
| 39 | /* If the value is already known, return it. */ | |
| 40 | if (notice->z_checked_auth != ZAUTH_UNSET) | |
| 41 | return (notice->z_checked_auth); | |
| 42 | ||
| 43 | if (!notice->z_auth) | |
| 44 | return (ZAUTH_NO); | |
| 45 | ||
| 46 | if ((result = krb_get_cred(SERVER_SERVICE, SERVER_INSTANCE, | |
| 47 | __Zephyr_realm, &cred)) != 0) | |
| 48 | return (ZAUTH_NO); | |
| 49 | ||
| 50 | #ifdef NOENCRYPTION | |
| 51 | our_checksum = 0; | |
| 52 | #else | |
| 53 | our_checksum = des_quad_cksum(notice->z_packet, NULL, | |
| 54 | notice->z_default_format+ | |
| 55 | strlen(notice->z_default_format)+1- | |
| 56 | notice->z_packet, 0, cred.session); | |
| 57 | #endif | |
| 58 | /* if mismatched checksum, then the packet was corrupted */ | |
| 59 | return ((our_checksum == notice->z_checksum) ? ZAUTH_YES : ZAUTH_FAILED); | |
| 60 | ||
| 61 | #else | |
| 62 | return (notice->z_auth ? ZAUTH_YES : ZAUTH_NO); | |
| 63 | #endif | |
| 64 | } |
