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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/* $USAGI: $ */
/*
* Copyright (C)2005 USAGI/WIDE Project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* based on ipmonitor.c
*/
/*
* Authors:
* Masahide NAKAMURA @USAGI
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/xfrm.h>
#include "utils.h"
#include "xfrm.h"
#include "ip_common.h"
static void usage(void) __attribute__((noreturn));
static void usage(void)
{
fprintf(stderr, "Usage: ip xfrm monitor [ all | LISTofOBJECTS ]\n");
exit(-1);
}
static int xfrm_acquire_print(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
struct xfrm_user_acquire *xacq = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr * tb[XFRMA_MAX+1];
__u16 family;
if (n->nlmsg_type != XFRM_MSG_ACQUIRE) {
fprintf(stderr, "Not an acquire: %08x %08x %08x\n",
n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
return 0;
}
len -= NLMSG_LENGTH(sizeof(*xacq));
if (len < 0) {
fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
return -1;
}
parse_rtattr(tb, XFRMA_MAX, XFRMACQ_RTA(xacq), len);
family = xacq->sel.family;
if (family == AF_UNSPEC)
family = xacq->policy.sel.family;
if (family == AF_UNSPEC)
family = preferred_family;
fprintf(fp, "acquire ");
fprintf(fp, "proto %s ", strxf_xfrmproto(xacq->id.proto));
if (show_stats > 0 || xacq->id.spi) {
__u32 spi = ntohl(xacq->id.spi);
fprintf(fp, "spi 0x%08x", spi);
if (show_stats > 0)
fprintf(fp, "(%u)", spi);
fprintf(fp, " ");
}
fprintf(fp, "%s", _SL_);
xfrm_selector_print(&xacq->sel, family, fp, " sel ");
xfrm_policy_info_print(&xacq->policy, tb, fp, " ", " policy ");
if (show_stats > 0)
fprintf(fp, " seq 0x%08u ", xacq->seq);
if (show_stats > 0) {
fprintf(fp, "%s-mask %s ",
strxf_algotype(XFRMA_ALG_CRYPT),
strxf_mask32(xacq->ealgos));
fprintf(fp, "%s-mask %s ",
strxf_algotype(XFRMA_ALG_AUTH),
strxf_mask32(xacq->aalgos));
fprintf(fp, "%s-mask %s",
strxf_algotype(XFRMA_ALG_COMP),
strxf_mask32(xacq->calgos));
}
fprintf(fp, "%s", _SL_);
if (oneline)
fprintf(fp, "\n");
fflush(fp);
return 0;
}
static int xfrm_accept_msg(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
if (timestamp)
print_timestamp(fp);
if (n->nlmsg_type == XFRM_MSG_NEWSA ||
n->nlmsg_type == XFRM_MSG_DELSA ||
n->nlmsg_type == XFRM_MSG_UPDSA ||
n->nlmsg_type == XFRM_MSG_EXPIRE) {
xfrm_state_print(who, n, arg);
return 0;
}
if (n->nlmsg_type == XFRM_MSG_NEWPOLICY ||
n->nlmsg_type == XFRM_MSG_DELPOLICY ||
n->nlmsg_type == XFRM_MSG_UPDPOLICY ||
n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
xfrm_policy_print(who, n, arg);
return 0;
}
if (n->nlmsg_type == XFRM_MSG_ACQUIRE) {
xfrm_acquire_print(who, n, arg);
return 0;
}
if (n->nlmsg_type == XFRM_MSG_FLUSHSA) {
/* XXX: Todo: show proto in xfrm_usersa_flush */
fprintf(fp, "Flushed state\n");
return 0;
}
if (n->nlmsg_type == XFRM_MSG_FLUSHPOLICY) {
fprintf(fp, "Flushed policy\n");
return 0;
}
if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP &&
n->nlmsg_type != NLMSG_DONE) {
fprintf(fp, "Unknown message: %08d 0x%08x 0x%08x\n",
n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
}
return 0;
}
extern struct rtnl_handle rth;
int do_xfrm_monitor(int argc, char **argv)
{
char *file = NULL;
unsigned groups = ~((unsigned)0); /* XXX */
int lacquire=0;
int lexpire=0;
int lpolicy=0;
int lsa=0;
rtnl_close(&rth);
while (argc > 0) {
if (matches(*argv, "file") == 0) {
NEXT_ARG();
file = *argv;
} else if (matches(*argv, "acquire") == 0) {
lacquire=1;
groups = 0;
} else if (matches(*argv, "expire") == 0) {
lexpire=1;
groups = 0;
} else if (matches(*argv, "SA") == 0) {
lsa=1;
groups = 0;
} else if (matches(*argv, "policy") == 0) {
lpolicy=1;
groups = 0;
} else if (matches(*argv, "help") == 0) {
usage();
} else {
fprintf(stderr, "Argument \"%s\" is unknown, try \"ip xfrm monitor help\".\n", *argv);
exit(-1);
}
argc--; argv++;
}
if (lacquire)
groups |= XFRMGRP_ACQUIRE;
if (lexpire)
groups |= XFRMGRP_EXPIRE;
if (lsa)
groups |= XFRMGRP_SA;
if (lpolicy)
groups |= XFRMGRP_POLICY;
if (file) {
FILE *fp;
fp = fopen(file, "r");
if (fp == NULL) {
perror("Cannot fopen");
exit(-1);
}
return rtnl_from_file(fp, xfrm_accept_msg, (void*)stdout);
}
//ll_init_map(&rth);
if (rtnl_open_byproto(&rth, groups, NETLINK_XFRM) < 0)
exit(1);
if (rtnl_listen(&rth, xfrm_accept_msg, (void*)stdout) < 0)
exit(2);
return 0;
}
|
