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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/* This file is part of the Project Athena Zephyr Notification System.
* It contains the hostmanager <--> client interaction routines.
*
* Created by: David C. Jedlinsky
*
* $Source$
* $Author$
*
* Copyright (c) 1987 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include "zhm.h"
#ifndef lint
#ifndef SABER
static char rcsid_hm_client_c[] = "$Header$";
#endif /* SABER */
#endif /* lint */
extern int no_server, timeout_type, nclt, deactivated;
extern struct sockaddr_in cli_sin, serv_sin, from;
transmission_tower(notice, packet, pak_len)
ZNotice_t *notice;
caddr_t packet;
int pak_len;
{
ZNotice_t gack;
Code_t ret;
struct sockaddr_in gsin;
unsigned int tleft;
nclt++;
if (notice->z_kind == HMCTL) {
if (!strcmp(notice->z_opcode, CLIENT_FLUSH)) {
send_flush_notice(HM_FLUSH);
deactivated = 1;
}
else if (!strcmp(notice->z_opcode, CLIENT_NEW_SERVER))
new_server((char *)NULL);
else
syslog (LOG_INFO, "Bad control notice from client.");
return;
} else
if (notice->z_kind != UNSAFE) {
gack = *notice;
gack.z_kind = HMACK;
gack.z_message_len = 0;
gack.z_multinotice = "";
gsin = cli_sin;
gsin.sin_port = from.sin_port;
if (gack.z_port == 0)
gack.z_port = from.sin_port;
DPR2 ("Client Port = %u\n", ntohs(gack.z_port));
notice->z_port = gack.z_port;
if ((ret = ZSetDestAddr(&gsin)) != ZERR_NONE) {
Zperr(ret);
com_err("hm", ret, "setting destination");
}
/* Bounce ACK to library */
if ((ret = send_outgoing(&gack)) != ZERR_NONE) {
Zperr(ret);
com_err("hm", ret, "sending raw notice");
}
}
if (!no_server) {
DPR2 ("Server Port = %u\n", ntohs(serv_sin.sin_port));
if ((ret = ZSetDestAddr(&serv_sin)) != ZERR_NONE) {
Zperr(ret);
com_err("hm", ret, "setting destination");
}
if ((ret = send_outgoing(notice)) != ZERR_NONE) {
Zperr(ret);
com_err("hm", ret, "while sending raw notice");
}
if (tleft = alarm(0))
(void)alarm(tleft);
else {
timeout_type = NOTICES;
(void)alarm(NOTICE_TIMEOUT);
}
}
(void)add_notice_to_queue(notice, packet, &gsin, pak_len);
}
Code_t
send_outgoing(notice)
ZNotice_t *notice;
{
Code_t retval;
char *packet;
int length;
if (!(packet = (char *) malloc((unsigned)sizeof(ZPacket_t))))
return(ENOMEM);
if ((retval = ZFormatSmallRawNotice(notice, packet, &length))
!= ZERR_NONE) {
free(packet);
return(retval);
}
retval = ZSendPacket(packet, length, 0);
free(packet);
return(retval);
}
|
