/*
* ip.c "ip" utility frontend.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <errno.h>
#include "SNAPSHOT.h"
#include "utils.h"
#include "ip_common.h"
int preferred_family = AF_UNSPEC;
int show_stats = 0;
int show_details = 0;
int resolve_hosts = 0;
int oneline = 0;
int timestamp = 0;
char * _SL_ = NULL;
char *batch_file = NULL;
int force = 0;
int max_flush_loops = 10;
struct rtnl_handle rth = { .fd = -1 };
static void usage(void) __attribute__((noreturn));
static void usage(void)
{
fprintf(stderr,
"Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
" ip [ -force ] -batch filename\n"
"where OBJECT := { link | addr | addrlabel | route | rule | neigh | ntable |\n"
" tunnel | tuntap | maddr | mroute | mrule | monitor | xfrm |\n"
" netns | l2tp }\n"
" OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n"
" -f[amily] { inet | inet6 | ipx | dnet | link } |\n"
" -l[oops] { maximum-addr-flush-attempts } |\n"
" -o[neline] | -t[imestamp] | -b[atch] [filename] |\n"
" -rc[vbuf] [size]}\n");
exit(-1);
}
static int do_help(int argc, char **argv)
{
usage();
}
static const struct cmd {
const char *cmd;
int (*func)(int argc, char **argv);
} cmds[] = {
{ "address", do_ipaddr },
{ "addrlabel", do_ipaddrlabel },
{ "maddress", do_multiaddr },
{ "route", do_iproute },
{ "rule", do_iprule },
{ "neighbor", do_ipneigh },
{ "neighbour", do_ipneigh },
{ "ntable", do_ipntable },
{ "ntbl", do_ipntable },
{ "link", do_iplink },
{ "l2tp", do_ipl2tp },
{ "tunnel", do_iptunnel },
{ "tunl", do_iptunnel },
{ "tuntap", do_iptuntap },
{ "tap", do_iptuntap },
{ "monitor", do_ipmonitor },
{ "xfrm", do_xfrm },
{ "mroute", do_multiroute },
{ "mrule", do_multirule },
{ "netns", do_netns },
{ "help", do_help },
{ 0, 0 }
};
static int do_cmd(const char *argv0, int argc, char **argv)
{
const struct cmd *c;
for (c = cmds; c->cmd; ++c) {
if (matches(argv0, c->cmd) == 0) {
return -(c->func(argc-1, argv+1));
}
}
fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0);
return EXIT_FAILURE;
}
#ifndef ANDROID
static int batch(const char *name)
{
char *line = NULL;
size_t len = 0;
int ret = EXIT_SUCCESS;
if (name && strcmp(name, "-") != 0) {
if (freopen(name, "r", stdin) == NULL) {
fprintf(stderr, "Cannot open file \"%s\" for reading: %s\n",
name, strerror(errno));
return EXIT_FAILURE;
}
}
if (rtnl_open(&rth, 0) < 0) {
fprintf(stderr, "Cannot open rtnetlink\n");
return EXIT_FAILURE;
}
cmdlineno = 0;
while (getcmdline(&line, &len, stdin) != -1) {
char *largv[100];
int largc;
largc = makeargs(line, largv, 100);
if (largc == 0)
continue; /* blank line */
if (do_cmd(largv[0], largc, largv)) {
fprintf(stderr, "Command failed %s:%d\n", name, cmdlineno);
ret = EXIT_FAILURE;
if (!force)
break;
}
}
if (line)
free(line);
rtnl_close(&rth);
return ret;
}
#endif
int main(int argc, char **argv)
{
char *basename;
basename = strrchr(argv[0], '/');
if (basename == NULL)
basename = argv[0];
else
basename++;
while (argc > 1) {
char *opt = argv[1];
if (strcmp(opt,"--") == 0) {
argc--; argv++;
break;
}
if (opt[0] != '-')
break;
if (opt[1] == '-')
opt++;
if (matches(opt, "-loops") == 0) {
argc--;
argv++;
if (argc <= 1)
usage();
max_flush_loops = atoi(argv[1]);
} else if (matches(opt, "-family") == 0) {
argc--;
argv++;
if (argc <= 1)
usage();
if (strcmp(argv[1], "inet") == 0)
preferred_family = AF_INET;
else if (strcmp(argv[1], "inet6") == 0)
preferred_family = AF_INET6;
else if (strcmp(argv[1], "dnet") == 0)
preferred_family = AF_DECnet;
else if (strcmp(argv[1], "link") == 0)
preferred_family = AF_PACKET;
else if (strcmp(argv[1], "ipx") == 0)
preferred_family = AF_IPX;
else if (strcmp(argv[1], "help") == 0)
usage();
else
invarg(argv[1], "invalid protocol family");
} else if (strcmp(opt, "-4") == 0) {
preferred_family = AF_INET;
} else if (strcmp(opt, "-6") == 0) {
preferred_family = AF_INET6;
} else if (strcmp(opt, "-0") == 0) {
preferred_family = AF_PACKET;
} else if (strcmp(opt, "-I") == 0) {
preferred_family = AF_IPX;
} else if (strcmp(opt, "-D") == 0) {
preferred_family = AF_DECnet;
} else if (matches(opt, "-stats") == 0 ||
matches(opt, "-statistics") == 0) {
++show_stats;
} else if (matches(opt, "-details") == 0) {
++show_details;
} else if (matches(opt, "-resolve") == 0) {
++resolve_hosts;
} else if (matches(opt, "-oneline") == 0) {
++oneline;
} else if (matches(opt, "-timestamp") == 0) {
++timestamp;
#if 0
} else if (matches(opt, "-numeric") == 0) {
rtnl_names_numeric++;
#endif
} else if (matches(opt, "-Version") == 0) {
printf("ip utility, iproute2-ss%s\n", SNAPSHOT);
exit(0);
} else if (matches(opt, "-force") == 0) {
++force;
#ifndef ANDROID
} else if (matches(opt, "-batch") == 0) {
argc--;
argv++;
if (argc <= 1)
usage();
batch_file = argv[1];
#endif
} else if (matches(opt, "-rcvbuf") == 0) {
unsigned int size;
argc--;
argv++;
if (argc <= 1)
usage();
if (get_unsigned(&size, argv[1], 0)) {
fprintf(stderr, "Invalid rcvbuf size '%s'\n",
argv[1]);
exit(-1);
}
rcvbuf = size;
} else if (matches(opt, "-help") == 0) {
usage();
} else {
fprintf(stderr, "Option \"%s\" is unknown, try \"ip -help\".\n", opt);
exit(-1);
}
argc--; argv++;
}
_SL_ = oneline ? "\\" : "\n" ;
#ifndef ANDROID
if (batch_file)
return batch(batch_file);
#endif
if (rtnl_open(&rth, 0) < 0)
exit(1);
if (strlen(basename) > 2)
return do_cmd(basename+2, argc, argv);
if (argc > 1)
return do_cmd(argv[1], argc-1, argv+1);
rtnl_close(&rth);
usage();
}