-
Notifications
You must be signed in to change notification settings - Fork 15
/
route.c
235 lines (215 loc) · 6.71 KB
/
route.c
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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
/*
* route This file contains an implementation of the command
* that manages the IP routing table in the kernel.
*
* Version: $Id: route.c,v 1.10 2002/07/30 05:24:20 ecki Exp $
*
* Maintainer: Bernd 'eckes' Eckenfels, <[email protected]>
*
* Author: Fred N. van Kempen, <[email protected]>
* (derived from FvK's 'route.c 1.70 01/04/94')
*
* Modifications:
* Johannes Stille: for Net-2Debugged by
* Linus Torvalds: Misc Changes
* Alan Cox: add the new mtu/window stuff
* Miquel van Smoorenburg: rt_add and rt_del
* {1.79} Bernd Eckenfels: route_info
* {1.80} Bernd Eckenfels: reject, metric, irtt, 1.2.x support.
* {1.81} Bernd Eckenfels: reject routes need a dummy device
*960127 {1.82} Bernd Eckenfels: 'mod' and 'dyn' 'reinstate' added
*960129 {1.83} Bernd Eckenfels: resolve and getsock now in lib/,
* REJECT displays '-' as gatway.
*960202 {1.84} Bernd Eckenfels: net-features support added
*960203 {1.85} Bernd Eckenfels: "#ifdef' in '#if' for net-features
* -A (aftrans) support, get_longopts
*960206 {1.86} Bernd Eckenfels: route_init();
*960218 {1.87} Bernd Eckenfels: netinet/in.h added
*960221 {1.88} Bernd Eckenfels: aftrans_dfl support
*960222 {1.90} Bernd Eckenfels: moved all AF specific code to lib/.
*960413 {1.91} Bernd Eckenfels: new RTACTION support+FLAG_CACHE/FIB
*960426 {1.92} Bernd Eckenfels: FLAG_SYM/-N support
*960823 {x.xx} Frank Strauss: INET6 stuff
*980629 {1.95} Arnaldo Carvalho de Melo: gettext instead of catgets
*990101 {1.96} Bernd Eckenfels: fixed usage and FLAG_CACHE Output
*20010404 {1.97} Arnaldo Carvalho de Melo: use setlocale
*
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
/* #include <net/route.h> realy broken */
#include <netinet/in.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <linux/param.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <ctype.h>
#include "net-support.h"
#include "config.h"
#include "intl.h"
#include "pathnames.h"
#include "version.h"
#include "util.h"
#define DFLT_AF "inet"
#define FEATURE_ROUTE
#include "lib/net-features.h" /* needs some of the system includes above! */
static char *Release = RELEASE;
int opt_n = 0; // numerical output FLAG_NUM | FLAG_SYM
int opt_v = 0; // debugging output flag
int opt_e = 1; // 1,2,3=type of routetable
int opt_fc = 0; // routing cache/FIB
int opt_h = 0; // help selected
struct aftype *ap; // selected address family
static void usage(int rc)
{
FILE *fp = rc ? stderr : stdout;
fprintf(fp, _("Usage: route [-nNvee] [-FC] [<AF>] List kernel routing tables\n"));
fprintf(fp, _(" route [-v] [-FC] {add|del|flush} ... Modify routing table for AF.\n\n"));
fprintf(fp, _(" route {-h|--help} [<AF>] Detailed usage syntax for specified AF.\n"));
fprintf(fp, _(" route {-V|--version} Display version/author and exit.\n\n"));
fprintf(fp, _(" -v, --verbose be verbose\n"));
fprintf(fp, _(" -n, --numeric don't resolve names\n"));
fprintf(fp, _(" -e, --extend display other/more information\n"));
fprintf(fp, _(" -F, --fib display Forwarding Information Base (default)\n"));
fprintf(fp, _(" -C, --cache display routing cache instead of FIB\n\n"));
fprintf(fp, _(" <AF>=Use -4, -6, '-A <af>' or '--<af>'; default: %s\n"), DFLT_AF);
fprintf(fp, _(" List of possible address families (which support routing):\n"));
print_aflist(1); /* 1 = routeable */
exit(rc);
}
static void version(void)
{
printf("%s\n%s\n", Release, Features);
exit(E_VERSION);
}
int main(int argc, char **argv)
{
int i, lop, what = 0;
struct option longopts[] =
{
AFTRANS_OPTS,
{"extend", 0, 0, 'e'},
{"verbose", 0, 0, 'v'},
{"version", 0, 0, 'V'},
{"numeric", 0, 0, 'n'},
{"symbolic", 0, 0, 'N'},
{"protocol", 1, 0, 'A'},
{"cache", 0, 0, 'C'},
{"fib", 0, 0, 'F'},
{"help", 0, 0, 'h'},
{NULL, 0, 0, 0}
};
char **tmp;
char *progname;
int options;
#if I18N
setlocale (LC_ALL, "");
bindtextdomain("net-tools", "/usr/share/locale");
textdomain("net-tools");
#endif
getroute_init(); /* Set up AF routing support */
setroute_init();
afname[0] = '\0';
progname = argv[0];
/* getopts and -net wont work :-/ */
for (tmp = argv; *tmp; tmp++) {
if (!strcmp(*tmp, "-net") || !strcmp(*tmp, "-host"))
(*tmp)[0]='#';
}
/* Fetch the command-line arguments. */
while ((i = getopt_long(argc, argv, "A:eCFhnN64Vv?", longopts, &lop)) != EOF)
switch (i) {
case -1:
break;
case 'n':
opt_n |= FLAG_NUM;
break;
case 'N':
opt_n |= FLAG_SYM;
break;
case 'v':
opt_v |= FLAG_VERBOSE;
break;
case 'e':
opt_e++;
break;
case 1:
if (lop < 0 || lop >= AFTRANS_CNT) {
EINTERN("route.c", "longopts 1 range");
break;
}
if ((i = aftrans_opt(longopts[lop].name)))
exit(i);
break;
case 'C':
opt_fc |= FLAG_CACHE;
break;
case 'F':
opt_fc |= FLAG_FIB;
break;
case 'A':
if ((i = aftrans_opt(optarg)))
exit(i);
break;
case '6':
if ((i = aftrans_opt("inet6")))
exit(i);
break;
case '4':
if ((i = aftrans_opt("inet")))
exit(i);
break;
case 'V':
version();
case 'h':
case '?':
opt_h++;
break;
default:
usage(E_OPTERR);
}
argv += optind;
argc -= optind;
if (opt_h) {
if (!afname[0])
usage(E_USAGE);
else
what = RTACTION_HELP;
} else {
if (!afname[0])
/* this will initialise afname[] */
aftrans_def("route", progname, DFLT_AF);
/* Do we have to show the contents of the routing table? */
if (*argv == NULL) {
what = RTACTION_SHOW;
} else {
if (!strcmp(*argv, "add"))
what = RTACTION_ADD;
else if (!strcmp(*argv, "del") || !strcmp(*argv, "delete"))
what = RTACTION_DEL;
else if (!strcmp(*argv, "flush"))
what = RTACTION_FLUSH;
else
usage(E_OPTERR);
}
}
options = (opt_e & FLAG_EXT) | opt_n | opt_fc | opt_v;
if (!opt_fc)
options |= FLAG_FIB;
if (what == RTACTION_SHOW)
i = route_info(afname, options);
else
i = route_edit(what, afname, options, ++argv);
return (i);
}