1 /* $NetBSD: netconfig.c,v 1.10 2020/04/23 00:31:51 joerg Exp $ */
2
3 /*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 #ifndef lint
32 __RCSID("$NetBSD: netconfig.c,v 1.10 2020/04/23 00:31:51 joerg Exp $");
33 #endif /* not lint */
34
35 #include <sys/types.h>
36 #include <sys/socket.h>
37 #include <sys/ioctl.h>
38
39 #include <arpa/inet.h>
40
41 #include <net/route.h>
42
43 #include <netinet/in.h>
44 #include <netinet/in_systm.h>
45 #include <netinet/ip.h>
46 #include <netinet/ip_icmp.h>
47
48 #include <atf-c.h>
49 #include <err.h>
50 #include <errno.h>
51 #include <string.h>
52
53 #include <rump/rump.h>
54 #include <rump/rump_syscalls.h>
55
56 #include "h_macros.h"
57
58
59 static void __unused
netcfg_rump_makeshmif(const char * busname,char * ifname)60 netcfg_rump_makeshmif(const char *busname, char *ifname)
61 {
62 int rv, ifnum;
63
64 if ((rv = rump_pub_shmif_create(busname, &ifnum)) != 0) {
65 #ifdef RUMPNFSD_NOATF
66 err(1, "makeshmif: rump_pub_shmif_create %d", rv);
67 #else
68 atf_tc_fail("makeshmif: rump_pub_shmif_create %d", rv);
69 #endif
70 }
71 sprintf(ifname, "shmif%d", ifnum);
72 }
73
74 static void __unused
netcfg_rump_if(const char * ifname,const char * addr,const char * mask)75 netcfg_rump_if(const char *ifname, const char *addr, const char *mask)
76 {
77 struct ifaliasreq ia;
78 struct sockaddr_in *sin;
79 in_addr_t inaddr, inmask;
80 int s, rv;
81
82 s = -1;
83 if ((s = rump_sys_socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
84 #ifdef RUMPNFSD_NOATF
85 err(1, "if config socket");
86 #else
87 atf_tc_fail_errno("if config socket");
88 #endif
89 }
90
91 inaddr = inet_addr(addr);
92 inmask = inet_addr(mask);
93
94 /* Address */
95 memset(&ia, 0, sizeof(ia));
96 strcpy(ia.ifra_name, ifname);
97 sin = (struct sockaddr_in *)&ia.ifra_addr;
98 sin->sin_family = AF_INET;
99 sin->sin_len = sizeof(struct sockaddr_in);
100 sin->sin_addr.s_addr = inaddr;
101
102 /* Netmask */
103 sin = (struct sockaddr_in *)&ia.ifra_mask;
104 sin->sin_family = AF_INET;
105 sin->sin_len = sizeof(struct sockaddr_in);
106 sin->sin_addr.s_addr = inmask;
107
108 /* Broadcast address */
109 sin = (struct sockaddr_in *)&ia.ifra_broadaddr;
110 sin->sin_family = AF_INET;
111 sin->sin_len = sizeof(struct sockaddr_in);
112 sin->sin_addr.s_addr = inaddr | ~inmask;
113
114 rv = rump_sys_ioctl(s, SIOCAIFADDR, &ia);
115 if (rv == -1) {
116 #ifdef RUMPNFSD_NOATF
117 err(1, "SIOCAIFADDR");
118 #else
119 atf_tc_fail_errno("SIOCAIFADDR");
120 #endif
121 }
122 rump_sys_close(s);
123 }
124
125 static void __unused
netcfg_rump_route(const char * dst,const char * mask,const char * gw)126 netcfg_rump_route(const char *dst, const char *mask, const char *gw)
127 {
128 size_t len;
129 struct {
130 struct rt_msghdr m_rtm;
131 uint8_t m_space[512];
132 } m_rtmsg;
133 #define rtm m_rtmsg.m_rtm
134 uint8_t *bp = m_rtmsg.m_space;
135 struct sockaddr_in sinstore;
136 int s, rv;
137
138 s = rump_sys_socket(PF_ROUTE, SOCK_RAW, 0);
139 if (s == -1) {
140 #ifdef RUMPNFSD_NOATF
141 err(1, "routing socket");
142 #else
143 atf_tc_fail_errno("routing socket");
144 #endif
145 }
146
147 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
148 rtm.rtm_type = RTM_ADD;
149 rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;
150 rtm.rtm_version = RTM_VERSION;
151 rtm.rtm_seq = 2;
152 rtm.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
153
154 /* dst */
155 memset(&sinstore, 0, sizeof(sinstore));
156 sinstore.sin_family = AF_INET;
157 sinstore.sin_len = sizeof(sinstore);
158 sinstore.sin_addr.s_addr = inet_addr(dst);
159 memcpy(bp, &sinstore, sizeof(sinstore));
160 bp += sizeof(sinstore);
161
162 /* gw */
163 memset(&sinstore, 0, sizeof(sinstore));
164 sinstore.sin_family = AF_INET;
165 sinstore.sin_len = sizeof(sinstore);
166 sinstore.sin_addr.s_addr = inet_addr(gw);
167 memcpy(bp, &sinstore, sizeof(sinstore));
168 bp += sizeof(sinstore);
169
170 /* netmask */
171 memset(&sinstore, 0, sizeof(sinstore));
172 sinstore.sin_family = AF_INET;
173 sinstore.sin_len = sizeof(sinstore);
174 sinstore.sin_addr.s_addr = inet_addr(mask);
175 memcpy(bp, &sinstore, sizeof(sinstore));
176 bp += sizeof(sinstore);
177
178 len = bp - (uint8_t *)&m_rtmsg;
179 rtm.rtm_msglen = len;
180
181 rv = rump_sys_write(s, &m_rtmsg, len);
182 if (rv != (int)len) {
183 #ifdef RUMPNFSD_NOATF
184 err(1, "write routing message");
185 #else
186 atf_tc_fail_errno("write routing message");
187 #endif
188 }
189 rump_sys_close(s);
190 }
191
192 static bool __unused
netcfg_rump_pingtest(const char * dst,int ms_timo)193 netcfg_rump_pingtest(const char *dst, int ms_timo)
194 {
195 struct timeval tv;
196 struct sockaddr_in sin;
197 struct icmp icmp;
198 socklen_t slen;
199 int s;
200 bool rv = false;
201
202 s = rump_sys_socket(PF_INET, SOCK_RAW, IPPROTO_ICMP);
203 if (s == -1)
204 return false;
205 tv.tv_sec = ms_timo / 1000;
206 tv.tv_usec = 1000 * (ms_timo % 1000);
207 if (rump_sys_setsockopt(s, SOL_SOCKET, SO_RCVTIMEO,
208 &tv, sizeof(tv)) == -1)
209 goto out;
210
211 memset(&sin, 0, sizeof(sin));
212 sin.sin_len = sizeof(sin);
213 sin.sin_family = AF_INET;
214 sin.sin_addr.s_addr = inet_addr(dst);
215
216 memset(&icmp, 0, sizeof(icmp));
217 icmp.icmp_type = ICMP_ECHO;
218 icmp.icmp_id = htons(37);
219 icmp.icmp_cksum = htons(0xf7da); /* precalc */
220
221 slen = sizeof(sin);
222 if (rump_sys_sendto(s, &icmp, sizeof(icmp), 0,
223 (struct sockaddr *)&sin, slen) == -1) {
224 goto out;
225 }
226
227 if (rump_sys_recvfrom(s, &icmp, sizeof(icmp), 0,
228 (struct sockaddr *)&sin, &slen) == -1)
229 goto out;
230
231 rv = true;
232 out:
233 rump_sys_close(s);
234 return rv;
235 }
236