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
108
109
110
111
112
113
114
115
116
|
/* $OpenBSD: privsep.c,v 1.40 2016/02/06 19:30:52 krw Exp $ */
/*
* Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE, ABUSE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/queue.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <errno.h>
#include <imsg.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include "dhcp.h"
#include "dhcpd.h"
#include "privsep.h"
void
dispatch_imsg(struct imsgbuf *ibuf)
{
struct imsg imsg;
ssize_t n;
for (;;) {
if ((n = imsg_get(ibuf, &imsg)) == -1)
error("dispatch_imsg: imsg_get failure: %s",
strerror(errno));
if (n == 0)
break;
switch (imsg.hdr.type) {
case IMSG_DELETE_ADDRESS:
if (imsg.hdr.len != IMSG_HEADER_SIZE +
sizeof(struct imsg_delete_address))
warning("bad IMSG_DELETE_ADDRESS");
else
priv_delete_address(imsg.data);
break;
case IMSG_ADD_ADDRESS:
if (imsg.hdr.len != IMSG_HEADER_SIZE +
sizeof(struct imsg_add_address))
warning("bad IMSG_ADD_ADDRESS");
else
priv_add_address(imsg.data);
break;
case IMSG_FLUSH_ROUTES:
if (imsg.hdr.len != IMSG_HEADER_SIZE +
sizeof(struct imsg_flush_routes))
warning("bad IMSG_FLUSH_ROUTES");
else
priv_flush_routes(imsg.data);
break;
case IMSG_ADD_ROUTE:
if (imsg.hdr.len != IMSG_HEADER_SIZE +
sizeof(struct imsg_add_route))
warning("bad IMSG_ADD_ROUTE");
else
priv_add_route(imsg.data);
break;
case IMSG_SET_INTERFACE_MTU:
if (imsg.hdr.len != IMSG_HEADER_SIZE +
sizeof(struct imsg_set_interface_mtu))
warning("bad IMSG_SET_INTERFACE_MTU");
else
priv_set_interface_mtu(imsg.data);
break;
case IMSG_HUP:
if (imsg.hdr.len != IMSG_HEADER_SIZE +
sizeof(struct imsg_hup))
warning("bad IMSG_HUP");
else {
ifi->flags |= IFI_HUP;
quit = SIGHUP;
}
break;
case IMSG_WRITE_RESOLV_CONF:
priv_write_resolv_conf(&imsg);
break;
case IMSG_WRITE_OPTION_DB:
priv_write_option_db(&imsg);
break;
default:
warning("received unknown message, code %u",
imsg.hdr.type);
}
imsg_free(&imsg);
}
}
|
