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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/* $OpenBSD: ikev1.c,v 1.10 2011/05/09 11:15:18 reyk Exp $ */
/* $vantronix: ikev1.c,v 1.13 2010/05/28 15:34:35 reyk Exp $ */
/*
* Copyright (c) 2010 Reyk Floeter <reyk@vantronix.net>
*
* 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 USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* XXX Either implement IKEv1,
* XXX or find a way to pass IKEv1 messages to isakmpd,
* XXX or remove this file and ikev1 from the iked tree.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/uio.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include <signal.h>
#include <errno.h>
#include <err.h>
#include <pwd.h>
#include <event.h>
#include "iked.h"
#include "ikev2.h"
int ikev1_dispatch_parent(int, struct privsep_proc *, struct imsg *);
int ikev1_dispatch_ikev2(int, struct privsep_proc *, struct imsg *);
int ikev1_dispatch_cert(int, struct privsep_proc *, struct imsg *);
void ikev1_msg_cb(int, short, void *);
void ikev1_recv(struct iked *, struct iked_message *);
static struct privsep_proc procs[] = {
{ "parent", PROC_PARENT, ikev1_dispatch_parent },
{ "ikev2", PROC_IKEV2, ikev1_dispatch_ikev2 },
{ "certstore", PROC_CERT, ikev1_dispatch_cert }
};
pid_t
ikev1(struct privsep *ps, struct privsep_proc *p)
{
return (proc_run(ps, p, procs, nitems(procs), NULL, NULL));
}
int
ikev1_dispatch_parent(int fd, struct privsep_proc *p, struct imsg *imsg)
{
struct iked *env = p->p_env;
switch (imsg->hdr.type) {
case IMSG_CTL_RESET:
log_debug("%s: config reload", __func__);
return (0);
case IMSG_CTL_COUPLE:
case IMSG_CTL_DECOUPLE:
return (0);
case IMSG_CTL_ACTIVE:
case IMSG_CTL_PASSIVE:
return (0);
case IMSG_UDP_SOCKET:
return (config_getsocket(env, imsg, ikev1_msg_cb));
case IMSG_COMPILE:
return (0);
default:
break;
}
return (-1);
}
int
ikev1_dispatch_ikev2(int fd, struct privsep_proc *p, struct imsg *imsg)
{
struct iked *env = p->p_env;
struct iked_message msg;
u_int8_t *buf;
ssize_t len;
switch (imsg->hdr.type) {
case IMSG_IKE_MESSAGE:
log_debug("%s: message", __func__);
IMSG_SIZE_CHECK(imsg, &msg);
memcpy(&msg, imsg->data, sizeof(msg));
len = IMSG_DATA_SIZE(imsg) - sizeof(msg);
buf = (u_int8_t *)imsg->data + sizeof(msg);
if (len <= 0 || (msg.msg_data = ibuf_new(buf, len)) == NULL) {
log_debug("%s: short message", __func__);
return (0);
}
log_debug("%s: message length %d", __func__, len);
ikev1_recv(env, &msg);
ikev2_msg_cleanup(env, &msg);
return (0);
default:
break;
}
return (-1);
}
int
ikev1_dispatch_cert(int fd, struct privsep_proc *p, struct imsg *imsg)
{
return (-1);
}
void
ikev1_msg_cb(int fd, short event, void *arg)
{
struct iked_socket *sock = arg;
struct iked *env = sock->sock_env;
struct iked_message msg;
struct ike_header hdr;
u_int8_t buf[IKED_MSGBUF_MAX];
size_t len;
struct iovec iov[2];
msg.msg_peerlen = sizeof(msg.msg_peer);
msg.msg_locallen = sizeof(msg.msg_local);
if ((len = recvfromto(fd, buf, sizeof(buf), 0,
(struct sockaddr*)&msg.msg_peer, &msg.msg_peerlen,
(struct sockaddr*)&msg.msg_local, &msg.msg_locallen)) < 1)
return;
if ((size_t)len <= sizeof(hdr))
return;
memcpy(&hdr, buf, sizeof(hdr));
if ((msg.msg_data = ibuf_new(buf, len)) == NULL)
return;
if (hdr.ike_version == IKEV2_VERSION) {
iov[0].iov_base = &msg;
iov[0].iov_len = sizeof(msg);
iov[1].iov_base = buf;
iov[1].iov_len = len;
proc_composev_imsg(env, PROC_IKEV2, IMSG_IKE_MESSAGE, -1,
iov, 2);
goto done;
}
ikev1_recv(env, &msg);
done:
ikev2_msg_cleanup(env, &msg);
}
void
ikev1_recv(struct iked *env, struct iked_message *msg)
{
struct ike_header *hdr;
if (ibuf_size(msg->msg_data) <= sizeof(*hdr)) {
log_debug("%s: short message", __func__);
return;
}
hdr = (struct ike_header *)ibuf_data(msg->msg_data);
log_debug("%s: header ispi %s rspi %s"
" nextpayload %u version 0x%02x exchange %u flags 0x%02x"
" msgid %u length %u", __func__,
print_spi(betoh64(hdr->ike_ispi), 8),
print_spi(betoh64(hdr->ike_rspi), 8),
hdr->ike_nextpayload,
hdr->ike_version,
hdr->ike_exchange,
hdr->ike_flags,
betoh32(hdr->ike_msgid),
betoh32(hdr->ike_length));
log_debug("%s: IKEv1 not supported", __func__);
}
|
