1 /* This file is part of the Project Athena Zephyr Notification System.
2 * It contains source for the ZFormatAuthenticNotice function.
3 *
4 * Created by: Robert French
5
6 * Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
7 * For copying and distribution information, see the file
8 * "mit-copyright.h".
9 */
10
11 #include "internal.h"
12
13 #ifdef ZEPHYR_USES_KERBEROS
ZFormatAuthenticNotice(notice,buffer,buffer_len,len,session)14 Code_t ZFormatAuthenticNotice(notice, buffer, buffer_len, len, session)
15 ZNotice_t *notice;
16 register char *buffer;
17 register int buffer_len;
18 int *len;
19 C_Block session;
20 {
21 ZNotice_t newnotice;
22 char *ptr;
23 int retval, hdrlen;
24
25 newnotice = *notice;
26 newnotice.z_auth = 1;
27 newnotice.z_authent_len = 0;
28 newnotice.z_ascii_authent = "";
29
30 if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
31 &hdrlen, &ptr, NULL)) != ZERR_NONE)
32 return (retval);
33
34 #ifdef NOENCRYPTION
35 newnotice.z_checksum = 0;
36 #else
37 newnotice.z_checksum =
38 (ZChecksum_t)des_quad_cksum(buffer, NULL, ptr - buffer, 0, (C_Block*)session);
39 #endif
40 if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
41 &hdrlen, NULL, NULL)) != ZERR_NONE)
42 return (retval);
43
44 ptr = buffer+hdrlen;
45
46 if (newnotice.z_message_len+hdrlen > buffer_len)
47 return (ZERR_PKTLEN);
48
49 (void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
50
51 *len = hdrlen+newnotice.z_message_len;
52
53 if (*len > Z_MAXPKTLEN)
54 return (ZERR_PKTLEN);
55
56 return (ZERR_NONE);
57 }
58 #endif
59