1 /* $NetBSD: netconfig.c,v 1.9 2017/01/13 21:30:42 christos 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 1.9 2017/01/13 21:30:42 christos 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 int noatf;
59
60 static void __unused
netcfg_rump_makeshmif(const char * busname,char * ifname)61 netcfg_rump_makeshmif(const char *busname, char *ifname)
62 {
63 int rv, ifnum;
64
65 if ((rv = rump_pub_shmif_create(busname, &ifnum)) != 0) {
66 if (noatf)
67 err(1, "makeshmif: rump_pub_shmif_create %d", rv);
68 else
69 atf_tc_fail("makeshmif: rump_pub_shmif_create %d", rv);
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 if (noatf)
85 err(1, "if config socket");
86 else
87 atf_tc_fail_errno("if config socket");
88 }
89
90 inaddr = inet_addr(addr);
91 inmask = inet_addr(mask);
92
93 /* Address */
94 memset(&ia, 0, sizeof(ia));
95 strcpy(ia.ifra_name, ifname);
96 sin = (struct sockaddr_in *)&ia.ifra_addr;
97 sin->sin_family = AF_INET;
98 sin->sin_len = sizeof(struct sockaddr_in);
99 sin->sin_addr.s_addr = inaddr;
100
101 /* Netmask */
102 sin = (struct sockaddr_in *)&ia.ifra_mask;
103 sin->sin_family = AF_INET;
104 sin->sin_len = sizeof(struct sockaddr_in);
105 sin->sin_addr.s_addr = inmask;
106
107 /* Broadcast address */
108 sin = (struct sockaddr_in *)&ia.ifra_broadaddr;
109 sin->sin_family = AF_INET;
110 sin->sin_len = sizeof(struct sockaddr_in);
111 sin->sin_addr.s_addr = inaddr | ~inmask;
112
113 rv = rump_sys_ioctl(s, SIOCAIFADDR, &ia);
114 if (rv == -1) {
115 if (noatf)
116 err(1, "SIOCAIFADDR");
117 else
118 atf_tc_fail_errno("SIOCAIFADDR");
119 }
120 rump_sys_close(s);
121 }
122
123 static void __unused
netcfg_rump_route(const char * dst,const char * mask,const char * gw)124 netcfg_rump_route(const char *dst, const char *mask, const char *gw)
125 {
126 size_t len;
127 struct {
128 struct rt_msghdr m_rtm;
129 uint8_t m_space[512];
130 } m_rtmsg;
131 #define rtm m_rtmsg.m_rtm
132 uint8_t *bp = m_rtmsg.m_space;
133 struct sockaddr_in sinstore;
134 int s, rv;
135
136 s = rump_sys_socket(PF_ROUTE, SOCK_RAW, 0);
137 if (s == -1) {
138 if (noatf)
139 err(1, "routing socket");
140 else
141 atf_tc_fail_errno("routing socket");
142 }
143
144 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
145 rtm.rtm_type = RTM_ADD;
146 rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;
147 rtm.rtm_version = RTM_VERSION;
148 rtm.rtm_seq = 2;
149 rtm.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
150
151 /* dst */
152 memset(&sinstore, 0, sizeof(sinstore));
153 sinstore.sin_family = AF_INET;
154 sinstore.sin_len = sizeof(sinstore);
155 sinstore.sin_addr.s_addr = inet_addr(dst);
156 memcpy(bp, &sinstore, sizeof(sinstore));
157 bp += sizeof(sinstore);
158
159 /* gw */
160 memset(&sinstore, 0, sizeof(sinstore));
161 sinstore.sin_family = AF_INET;
162 sinstore.sin_len = sizeof(sinstore);
163 sinstore.sin_addr.s_addr = inet_addr(gw);
164 memcpy(bp, &sinstore, sizeof(sinstore));
165 bp += sizeof(sinstore);
166
167 /* netmask */
168 memset(&sinstore, 0, sizeof(sinstore));
169 sinstore.sin_family = AF_INET;
170 sinstore.sin_len = sizeof(sinstore);
171 sinstore.sin_addr.s_addr = inet_addr(mask);
172 memcpy(bp, &sinstore, sizeof(sinstore));
173 bp += sizeof(sinstore);
174
175 len = bp - (uint8_t *)&m_rtmsg;
176 rtm.rtm_msglen = len;
177
178 rv = rump_sys_write(s, &m_rtmsg, len);
179 if (rv != (int)len) {
180 if (noatf)
181 err(1, "write routing message");
182 else
183 atf_tc_fail_errno("write routing message");
184 }
185 rump_sys_close(s);
186 }
187
188 static bool __unused
netcfg_rump_pingtest(const char * dst,int ms_timo)189 netcfg_rump_pingtest(const char *dst, int ms_timo)
190 {
191 struct timeval tv;
192 struct sockaddr_in sin;
193 struct icmp icmp;
194 socklen_t slen;
195 int s;
196 bool rv = false;
197
198 s = rump_sys_socket(PF_INET, SOCK_RAW, IPPROTO_ICMP);
199 if (s == -1)
200 return false;
201 tv.tv_sec = ms_timo / 1000;
202 tv.tv_usec = 1000 * (ms_timo % 1000);
203 if (rump_sys_setsockopt(s, SOL_SOCKET, SO_RCVTIMEO,
204 &tv, sizeof(tv)) == -1)
205 goto out;
206
207 memset(&sin, 0, sizeof(sin));
208 sin.sin_len = sizeof(sin);
209 sin.sin_family = AF_INET;
210 sin.sin_addr.s_addr = inet_addr(dst);
211
212 memset(&icmp, 0, sizeof(icmp));
213 icmp.icmp_type = ICMP_ECHO;
214 icmp.icmp_id = htons(37);
215 icmp.icmp_cksum = htons(0xf7da); /* precalc */
216
217 slen = sizeof(sin);
218 if (rump_sys_sendto(s, &icmp, sizeof(icmp), 0,
219 (struct sockaddr *)&sin, slen) == -1) {
220 goto out;
221 }
222
223 if (rump_sys_recvfrom(s, &icmp, sizeof(icmp), 0,
224 (struct sockaddr *)&sin, &slen) == -1)
225 goto out;
226
227 rv = true;
228 out:
229 rump_sys_close(s);
230 return rv;
231 }
232