1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*
* kdc/dispatch.c
*
* Copyright 1990 by the Massachusetts Institute of Technology.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* Dispatch an incoming packet.
*/
#include "k5-int.h"
#include <syslog.h>
#include "kdc_util.h"
#include "extern.h"
#include "adm_proto.h"
krb5_error_code
dispatch(pkt, from, portnum, response)
krb5_data *pkt;
const krb5_fulladdr *from;
int portnum;
krb5_data **response;
{
krb5_error_code retval;
krb5_kdc_req *as_req;
/* decode incoming packet, and dispatch */
#ifndef NOCACHE
/* try the replay lookaside buffer */
if (kdc_check_lookaside(pkt, from, response)) {
/* a hit! */
krb5_klog_syslog(LOG_INFO, "DISPATCH: replay found and re-transmitted");
return 0;
}
#endif
/* try TGS_REQ first; they are more common! */
if (krb5_is_tgs_req(pkt)) {
retval = process_tgs_req(pkt, from, portnum, response);
} else if (krb5_is_as_req(pkt)) {
if (!(retval = decode_krb5_as_req(pkt, &as_req))) {
/*
* setup_server_realm() sets up the global realm-specific data
* pointer.
*/
if (!(retval = setup_server_realm(as_req->server))) {
retval = process_as_req(as_req, from, portnum, response);
}
krb5_free_kdc_req(kdc_context, as_req);
}
}
#ifdef KRB5_KRB4_COMPAT
else if (pkt->data[0] == 4) /* old version */
retval = process_v4(pkt, from, portnum, response);
#endif
else
retval = KRB5KRB_AP_ERR_MSG_TYPE;
#ifndef NOCACHE
/* put the response into the lookaside buffer */
if (!retval)
kdc_insert_lookaside(pkt, from, *response);
#endif
return retval;
}
|
