Commit | Line | Data |
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4bec325f | 1 | #ifndef lint |
89a108e6 | 2 | static char sccsid[] = "@(#)route.c 4.8 (Berkeley) 83/08/21"; |
4bec325f BJ |
3 | #endif |
4 | ||
4bec325f BJ |
5 | #include <sys/types.h> |
6 | #include <sys/socket.h> | |
7 | #include <sys/ioctl.h> | |
63c817da | 8 | #include <sys/mbuf.h> |
94a2d2a7 | 9 | |
63c817da | 10 | #define KERNEL |
4bec325f | 11 | #include <net/route.h> |
94a2d2a7 SL |
12 | #include <netinet/in.h> |
13 | ||
14 | #include <stdio.h> | |
4bec325f BJ |
15 | #include <errno.h> |
16 | #include <ctype.h> | |
accbc2e3 | 17 | #include <netdb.h> |
4bec325f BJ |
18 | |
19 | struct rtentry route; | |
20 | int options; | |
21 | int s; | |
22 | struct sockaddr_in sin = { AF_INET }; | |
379dcc38 | 23 | struct in_addr inet_makeaddr(); |
4bec325f BJ |
24 | |
25 | main(argc, argv) | |
26 | int argc; | |
27 | char *argv[]; | |
28 | { | |
29 | ||
30 | if (argc < 2) | |
63c817da | 31 | printf("usage: route [ -f ] [ cmd args ]\n"), exit(1); |
5a635333 | 32 | s = socket(AF_INET, SOCK_RAW, 0, 0); |
4bec325f | 33 | if (s < 0) { |
5a635333 | 34 | perror("route: socket"); |
4bec325f BJ |
35 | exit(1); |
36 | } | |
37 | argc--, argv++; | |
63c817da SL |
38 | if (strcmp(*argv, "-f") == 0) { |
39 | argc--, argv++; | |
40 | flushroutes(); | |
41 | } | |
42 | if (argc > 0) { | |
43 | if (strcmp(*argv, "add") == 0) | |
44 | newroute(argc, argv); | |
45 | else if (strcmp(*argv, "delete") == 0) | |
46 | newroute(argc, argv); | |
47 | else if (strcmp(*argv, "change") == 0) | |
48 | changeroute(argc-1, argv+1); | |
49 | else | |
50 | printf("%s: huh?\n", *argv); | |
51 | } | |
52 | } | |
53 | ||
54 | /* | |
55 | * Purge all entries in the routing tables not | |
56 | * associated with network interfaces. | |
57 | */ | |
58 | #include <nlist.h> | |
59 | ||
60 | struct nlist nl[] = { | |
61 | #define N_RTHOST 0 | |
62 | { "_rthost" }, | |
63 | #define N_RTNET 1 | |
64 | { "_rtnet" }, | |
65 | "", | |
66 | }; | |
67 | ||
68 | flushroutes() | |
69 | { | |
70 | struct mbuf mb; | |
71 | register struct rtentry *rt; | |
72 | register struct mbuf *m; | |
73 | struct mbuf *routehash[RTHASHSIZ]; | |
74 | int i, doinghost = 1, kmem; | |
75 | char *routename(); | |
76 | ||
77 | nlist("/vmunix", nl); | |
78 | if (nl[N_RTHOST].n_value == 0) { | |
79 | printf("route: \"rthost\", symbol not in namelist\n"); | |
80 | exit(1); | |
81 | } | |
82 | if (nl[N_RTNET].n_value == 0) { | |
83 | printf("route: \"rtnet\", symbol not in namelist\n"); | |
84 | exit(1); | |
85 | } | |
86 | kmem = open("/dev/kmem", 0); | |
87 | if (kmem < 0) { | |
88 | perror("route: /dev/kmem"); | |
89 | exit(1); | |
90 | } | |
91 | lseek(kmem, nl[N_RTHOST].n_value, 0); | |
92 | read(kmem, routehash, sizeof (routehash)); | |
93 | printf("Flushing routing tables:\n"); | |
94 | again: | |
95 | for (i = 0; i < RTHASHSIZ; i++) { | |
96 | if (routehash[i] == 0) | |
97 | continue; | |
98 | m = routehash[i]; | |
99 | while (m) { | |
100 | lseek(kmem, m, 0); | |
101 | read(kmem, &mb, sizeof (mb)); | |
102 | rt = mtod(&mb, struct rtentry *); | |
103 | if (rt->rt_flags & RTF_GATEWAY) { | |
104 | struct sockaddr_in *sin; | |
105 | ||
106 | sin = (struct sockaddr_in *)&rt->rt_dst; | |
107 | printf("%-15.15s ", routename(sin->sin_addr)); | |
108 | sin = (struct sockaddr_in *)&rt->rt_gateway; | |
109 | printf("%-15.15s ", routename(sin->sin_addr)); | |
110 | if (ioctl(s, SIOCDELRT, (caddr_t)rt) < 0) | |
111 | error("delete"); | |
112 | else | |
113 | printf("done\n"); | |
114 | } | |
115 | m = mb.m_next; | |
116 | } | |
117 | } | |
118 | if (doinghost) { | |
119 | lseek(kmem, nl[N_RTNET].n_value, 0); | |
120 | read(kmem, routehash, sizeof (routehash)); | |
121 | doinghost = 0; | |
122 | goto again; | |
123 | } | |
124 | close(kmem); | |
125 | } | |
126 | ||
127 | char * | |
128 | routename(in) | |
129 | struct in_addr in; | |
130 | { | |
131 | char *cp = 0; | |
132 | static char line[50]; | |
133 | int lna, net; | |
134 | ||
135 | net = inet_netof(in); | |
136 | lna = inet_lnaof(in); | |
137 | if (lna == INADDR_ANY) { | |
138 | struct netent *np = getnetbyaddr(net, AF_INET); | |
139 | ||
140 | if (np) | |
141 | cp = np->n_name; | |
142 | } else { | |
143 | struct hostent *hp; | |
144 | ||
145 | hp = gethostbyaddr(&in, sizeof (struct in_addr), | |
146 | AF_INET); | |
147 | if (hp) | |
148 | cp = hp->h_name; | |
149 | } | |
150 | if (cp) | |
151 | strcpy(line, cp); | |
152 | else { | |
153 | u_char *ucp = (u_char *)∈ | |
154 | if (lna == INADDR_ANY) | |
155 | sprintf(line, "%u.%u.%u", ucp[0], ucp[1], ucp[2]); | |
156 | else | |
157 | sprintf(line, "%u.%u.%u.%u", ucp[0], ucp[1], | |
158 | ucp[2], ucp[3]); | |
159 | } | |
160 | return (line); | |
4bec325f BJ |
161 | } |
162 | ||
163 | newroute(argc, argv) | |
164 | int argc; | |
165 | char *argv[]; | |
166 | { | |
167 | struct sockaddr_in *sin; | |
168 | char *cmd; | |
169 | ||
183ef13b SL |
170 | if (argc < 3 || argc > 4) { |
171 | printf("usage: %s destination gateway [ metric ]\n", argv[0]); | |
4bec325f BJ |
172 | return; |
173 | } | |
183ef13b SL |
174 | cmd = argv[0]; |
175 | getaddr(argv[1], &route.rt_dst); | |
176 | getaddr(argv[2], &route.rt_gateway); | |
4bec325f BJ |
177 | sin = (struct sockaddr_in *)&route.rt_dst; |
178 | route.rt_flags = RTF_UP; | |
accbc2e3 | 179 | if (inet_lnaof(sin->sin_addr) != 0) |
4bec325f | 180 | route.rt_flags |= RTF_HOST; |
183ef13b SL |
181 | if (argc > 3 && atoi(argv[3]) > 0) |
182 | route.rt_flags |= RTF_GATEWAY; | |
63c817da SL |
183 | printf("%s %s: gateway ", cmd, routename(sin->sin_addr)); |
184 | sin = (struct sockaddr_in *)&route.rt_gateway; | |
185 | printf("%s, flags %x\n", routename(sin->sin_addr), route.rt_flags); | |
4bec325f BJ |
186 | if (ioctl(s, *cmd == 'a' ? SIOCADDRT : SIOCDELRT, (caddr_t)&route)) |
187 | error(cmd); | |
188 | } | |
189 | ||
190 | changeroute(argc, argv) | |
191 | int argc; | |
192 | char *argv[]; | |
193 | { | |
194 | printf("not supported\n"); | |
195 | } | |
196 | ||
197 | error(cmd) | |
198 | char *cmd; | |
199 | { | |
200 | extern int errno; | |
201 | ||
202 | if (errno == ESRCH) | |
203 | fprintf(stderr, "not in table\n"); | |
204 | else if (errno == EBUSY) | |
205 | fprintf(stderr, "entry in use\n"); | |
206 | else if (errno == ENOBUFS) | |
207 | fprintf(stderr, "routing table overflow\n"); | |
208 | else | |
209 | perror(cmd); | |
210 | } | |
211 | ||
212 | getaddr(s, sin) | |
213 | char *s; | |
214 | struct sockaddr_in *sin; | |
215 | { | |
accbc2e3 | 216 | struct hostent *hp; |
379dcc38 SL |
217 | struct netent *np; |
218 | u_long val; | |
accbc2e3 | 219 | |
89a108e6 SL |
220 | if (strcmp(s, "default") == 0) { |
221 | sin->sin_family = AF_INET; | |
222 | sin->sin_addr = inet_makeaddr(0, INADDR_ANY); | |
223 | return; | |
224 | } | |
accbc2e3 | 225 | hp = gethostbyname(s); |
379dcc38 SL |
226 | if (hp) { |
227 | sin->sin_family = hp->h_addrtype; | |
228 | bcopy(hp->h_addr, &sin->sin_addr, hp->h_length); | |
4bec325f | 229 | return; |
4bec325f | 230 | } |
379dcc38 SL |
231 | np = getnetbyname(s); |
232 | if (np) { | |
233 | sin->sin_family = np->n_addrtype; | |
234 | sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); | |
235 | return; | |
236 | } | |
237 | sin->sin_family = AF_INET; | |
238 | val = inet_addr(s); | |
239 | if (val != -1) { | |
240 | sin->sin_addr.s_addr = val; | |
241 | return; | |
242 | } | |
243 | val = inet_network(s); | |
244 | if (val != -1) { | |
245 | sin->sin_addr = inet_makeaddr(val, INADDR_ANY); | |
246 | return; | |
247 | } | |
248 | fprintf(stderr, "%s: bad value\n", s); | |
249 | exit(1); | |
183ef13b | 250 | } |