289493e85e34eb347072f979a09191c9c2b0a612
[dragonfly.git] / sys / contrib / ipfilter / netinet / mlfk_ipl.c
1 /*
2  * Copyright 1999 Guido van Rooij.  All rights reserved.
3  * 
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are
7  * met:
8  *  1. Redistributions of source code must retain the above copyright
9  *     notice, this list of conditions and the following disclaimer.
10  *  2. Redistributions in binary form must reproduce the above copyright notice,
11  *     this list of conditions and the following disclaimer in the documentation
12  *     and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS
15  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17  * DISCLAIMED.  IN NO EVENT SHALL THE HOLDER OR CONTRIBUTORS BE LIABLE FOR
18  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD: src/sys/contrib/ipfilter/netinet/mlfk_ipl.c,v 1.9.2.2 2002/04/27 17:37:12 darrenr Exp $
27  * $DragonFly: src/sys/contrib/ipfilter/netinet/mlfk_ipl.c,v 1.9 2008/08/14 07:41:52 swildner Exp $
28  */
29
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/conf.h>
36 #include <sys/socket.h>
37 #include <sys/sysctl.h>
38 #include <net/if.h>
39 #include <netinet/in_systm.h>
40 #include <netinet/in.h>
41 #include <netinet/ip.h>
42 #if defined(__DragonFly__) || (__FreeBSD_version >= 199511)
43 # include <net/route.h>
44 # include <netinet/ip_var.h>
45 # include <netinet/tcp.h>
46 # include <netinet/tcpip.h>
47 #endif
48
49
50 #include "ipl.h"
51 #include "ip_compat.h"
52 #include "ip_fil.h"
53 #include "ip_state.h"
54 #include "ip_nat.h"
55 #include "ip_auth.h"
56 #include "ip_frag.h"
57 #include "ip_proxy.h"
58
59 SYSCTL_DECL(_net_inet);
60 SYSCTL_NODE(_net_inet, OID_AUTO, ipf, CTLFLAG_RW, 0, "IPF");
61 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_flags, CTLFLAG_RW, &fr_flags, 0, "");
62 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_pass, CTLFLAG_RW, &fr_pass, 0, "");
63 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_active, CTLFLAG_RD, &fr_active, 0, "");
64 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpidletimeout, CTLFLAG_RW,
65            &fr_tcpidletimeout, 0, "");
66 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosewait, CTLFLAG_RW,
67            &fr_tcpclosewait, 0, "");
68 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcplastack, CTLFLAG_RW,
69            &fr_tcplastack, 0, "");
70 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcptimeout, CTLFLAG_RW,
71            &fr_tcptimeout, 0, "");
72 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcpclosed, CTLFLAG_RW,
73            &fr_tcpclosed, 0, "");
74 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_tcphalfclosed, CTLFLAG_RW,
75            &fr_tcphalfclosed, 0, "");
76 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_udptimeout, CTLFLAG_RW,
77            &fr_udptimeout, 0, "");
78 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_udpacktimeout, CTLFLAG_RW,
79            &fr_udpacktimeout, 0, "");
80 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_icmptimeout, CTLFLAG_RW,
81            &fr_icmptimeout, 0, "");
82 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_icmpacktimeout, CTLFLAG_RW,
83            &fr_icmpacktimeout, 0, "");
84 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defnatage, CTLFLAG_RW,
85            &fr_defnatage, 0, "");
86 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_ipfrttl, CTLFLAG_RW,
87            &fr_ipfrttl, 0, "");
88 SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_unreach, CTLFLAG_RW,
89            &ipl_unreach, 0, "");
90 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_running, CTLFLAG_RD,
91            &fr_running, 0, "");
92 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authsize, CTLFLAG_RD,
93            &fr_authsize, 0, "");
94 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_authused, CTLFLAG_RD,
95            &fr_authused, 0, "");
96 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_defaultauthage, CTLFLAG_RW,
97            &fr_defaultauthage, 0, "");
98 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_chksrc, CTLFLAG_RW, &fr_chksrc, 0, "");
99 SYSCTL_INT(_net_inet_ipf, OID_AUTO, ippr_ftp_pasvonly, CTLFLAG_RW,
100            &ippr_ftp_pasvonly, 0, "");
101 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_minttl, CTLFLAG_RW, &fr_minttl, 0, "");
102 SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_minttllog, CTLFLAG_RW,
103            &fr_minttllog, 0, "");
104
105 #define CDEV_MAJOR 79
106 static struct dev_ops ipl_ops = {
107         { "ipl", CDEV_MAJOR, 0 },
108         .d_open =       iplopen,
109         .d_close =      iplclose,
110         .d_read =       iplread,
111         .d_ioctl =      iplioctl,
112 };
113
114 static int
115 ipfilter_modevent(module_t mod, int type, void *unused)
116 {
117         char    *c;
118         int     i, error = 0;
119
120         switch (type) {
121         case MOD_LOAD :
122
123                 error = iplattach();
124                 if (error)
125                         break;
126                 dev_ops_add(&ipl_ops, 0, 0);
127
128                 c = NULL;
129                 for(i=strlen(IPL_NAME); i>0; i--)
130                         if (IPL_NAME[i] == '/') {
131                                 c = &IPL_NAME[i+1];
132                                 break;
133                         }
134                 if (!c)
135                         c = IPL_NAME;
136                 make_dev(&ipl_ops, IPL_LOGIPF, 0, 0, 0600, c);
137
138                 c = NULL;
139                 for(i=strlen(IPL_NAT); i>0; i--)
140                         if (IPL_NAT[i] == '/') {
141                                 c = &IPL_NAT[i+1];
142                                 break;
143                         }
144                 if (!c)
145                         c = IPL_NAT;
146                 make_dev(&ipl_ops, IPL_LOGNAT, 0, 0, 0600, c);
147
148                 c = NULL;
149                 for(i=strlen(IPL_STATE); i>0; i--)
150                         if (IPL_STATE[i] == '/') {
151                                 c = &IPL_STATE[i+1];
152                                 break;
153                         }
154                 if (!c)
155                         c = IPL_STATE;
156                 make_dev(&ipl_ops, IPL_LOGSTATE, 0, 0, 0600, c);
157
158                 c = NULL;
159                 for(i=strlen(IPL_AUTH); i>0; i--)
160                         if (IPL_AUTH[i] == '/') {
161                                 c = &IPL_AUTH[i+1];
162                                 break;
163                         }
164                 if (!c)
165                         c = IPL_AUTH;
166                 make_dev(&ipl_ops, IPL_LOGAUTH, 0, 0, 0600, c);
167
168                 break;
169         case MOD_UNLOAD :
170                 dev_ops_remove_all(&ipl_ops);
171                 error = ipldetach();
172                 break;
173         default:
174                 error = EINVAL;
175                 break;
176         }
177         return error;
178 }
179
180 static moduledata_t ipfiltermod = {
181         "ipl",
182         ipfilter_modevent,
183         0
184 };
185 DECLARE_MODULE(ipfilter, ipfiltermod, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY);