busybox/networking/ip.c

/* vi: set sw=4 ts=4: */
/*
 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
 *
 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 * Changes:
 * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
 * Bernhard Reutner-Fischer rewrote to use index_in_substr_array
 */

/* would need to make the " | " optional depending on more than one selected: */
//usage:#define ip_trivial_usage
//usage:       "[OPTIONS] {"
//usage:	IF_FEATURE_IP_ADDRESS("address | ")
//usage:	IF_FEATURE_IP_ROUTE("route | ")
//usage:	IF_FEATURE_IP_LINK("link | ")
//usage:	IF_FEATURE_IP_TUNNEL("tunnel | ")
//usage:	IF_FEATURE_IP_RULE("rule")
//usage:       "} {COMMAND}"
//usage:#define ip_full_usage "\n\n"
//usage:       "ip [OPTIONS] OBJECT {COMMAND}\n"
//usage:       "where OBJECT := {"
//usage:	IF_FEATURE_IP_ADDRESS("address | ")
//usage:	IF_FEATURE_IP_ROUTE("route | ")
//usage:	IF_FEATURE_IP_LINK("link | ")
//usage:	IF_FEATURE_IP_TUNNEL("tunnel | ")
//usage:	IF_FEATURE_IP_RULE("rule")
//usage:       "}\n"
//usage:       "OPTIONS := { -f[amily] { inet | inet6 | link } | -o[neline] }"
//usage:
//usage:#define ipaddr_trivial_usage
//usage:       "{ {add|del} IFADDR dev STRING | {show|flush}\n"
//usage:       "		[dev STRING] [to PREFIX] }"
//usage:#define ipaddr_full_usage "\n\n"
//usage:       "ipaddr {add|change|replace|delete} IFADDR dev STRING\n"
//usage:       "ipaddr {show|flush} [dev STRING] [scope SCOPE-ID]\n"
//usage:       "	[to PREFIX] [label PATTERN]\n"
//usage:       "	IFADDR := PREFIX | ADDR peer PREFIX\n"
//usage:       "	[broadcast ADDR] [anycast ADDR]\n"
//usage:       "	[label STRING] [scope SCOPE-ID]\n"
//usage:       "	SCOPE-ID := [host | link | global | NUMBER]"
//usage:
//usage:#define iplink_trivial_usage
//usage:       "{ set DEVICE { up | down | arp { on | off } | show [DEVICE] }"
//usage:#define iplink_full_usage "\n\n"
//usage:       "iplink set DEVICE { up | down | arp | multicast { on | off } |\n"
//usage:       "			dynamic { on | off } |\n"
//usage:       "			mtu MTU }\n"
//usage:       "iplink show [DEVICE]"
//usage:
//usage:#define iproute_trivial_usage
//usage:       "{ list | flush | add | del | change | append |\n"
//usage:       "		replace | test } ROUTE"
//usage:#define iproute_full_usage "\n\n"
//usage:       "iproute { list | flush } SELECTOR\n"
//usage:       "iproute get ADDRESS [from ADDRESS iif STRING]\n"
//usage:       "	[oif STRING] [tos TOS]\n"
//usage:       "iproute { add | del | change | append | replace | test } ROUTE\n"
//usage:       "	SELECTOR := [root PREFIX] [match PREFIX] [proto RTPROTO]\n"
//usage:       "	ROUTE := [TYPE] PREFIX [tos TOS] [proto RTPROTO] [metric METRIC]"
//usage:
//usage:#define iprule_trivial_usage
//usage:       "{[list | add | del] RULE}"
//usage:#define iprule_full_usage "\n\n"
//usage:       "iprule [list | add | del] SELECTOR ACTION\n"
//usage:       "	SELECTOR := [from PREFIX] [to PREFIX] [tos TOS] [fwmark FWMARK]\n"
//usage:       "			[dev STRING] [pref NUMBER]\n"
//usage:       "	ACTION := [table TABLE_ID] [nat ADDRESS]\n"
//usage:       "			[prohibit | reject | unreachable]\n"
//usage:       "			[realms [SRCREALM/]DSTREALM]\n"
//usage:       "	TABLE_ID := [local | main | default | NUMBER]"
//usage:
//usage:#define iptunnel_trivial_usage
//usage:       "{ add | change | del | show } [NAME]\n"
//usage:       "	[mode { ipip | gre | sit }]\n"
//usage:       "	[remote ADDR] [local ADDR] [ttl TTL]"
//usage:#define iptunnel_full_usage "\n\n"
//usage:       "iptunnel { add | change | del | show } [NAME]\n"
//usage:       "	[mode { ipip | gre | sit }] [remote ADDR] [local ADDR]\n"
//usage:       "	[[i|o]seq] [[i|o]key KEY] [[i|o]csum]\n"
//usage:       "	[ttl TTL] [tos TOS] [[no]pmtudisc] [dev PHYS_DEV]"

#include "libbb.h"

#include "libiproute/utils.h"
#include "libiproute/ip_common.h"

#if ENABLE_FEATURE_IP_ADDRESS \
 || ENABLE_FEATURE_IP_ROUTE \
 || ENABLE_FEATURE_IP_LINK \
 || ENABLE_FEATURE_IP_TUNNEL \
 || ENABLE_FEATURE_IP_RULE

static int FAST_FUNC ip_print_help(char **argv UNUSED_PARAM)
{
	bb_show_usage();
}

typedef int FAST_FUNC (*ip_func_ptr_t)(char**);

static int ip_do(ip_func_ptr_t ip_func, char **argv)
{
	argv = ip_parse_common_args(argv + 1);
	return ip_func(argv);
}

#if ENABLE_FEATURE_IP_ADDRESS
int ipaddr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ipaddr_main(int argc UNUSED_PARAM, char **argv)
{
	return ip_do(do_ipaddr, argv);
}
#endif
#if ENABLE_FEATURE_IP_LINK
int iplink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int iplink_main(int argc UNUSED_PARAM, char **argv)
{
	return ip_do(do_iplink, argv);
}
#endif
#if ENABLE_FEATURE_IP_ROUTE
int iproute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int iproute_main(int argc UNUSED_PARAM, char **argv)
{
	return ip_do(do_iproute, argv);
}
#endif
#if ENABLE_FEATURE_IP_RULE
int iprule_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int iprule_main(int argc UNUSED_PARAM, char **argv)
{
	return ip_do(do_iprule, argv);
}
#endif
#if ENABLE_FEATURE_IP_TUNNEL
int iptunnel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int iptunnel_main(int argc UNUSED_PARAM, char **argv)
{
	return ip_do(do_iptunnel, argv);
}
#endif


int ip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ip_main(int argc UNUSED_PARAM, char **argv)
{
	static const char keywords[] ALIGN1 =
		IF_FEATURE_IP_ADDRESS("address\0")
		IF_FEATURE_IP_ROUTE("route\0")
		IF_FEATURE_IP_ROUTE("r\0")
		IF_FEATURE_IP_LINK("link\0")
		IF_FEATURE_IP_TUNNEL("tunnel\0")
		IF_FEATURE_IP_TUNNEL("tunl\0")
		IF_FEATURE_IP_RULE("rule\0")
		;
	static const ip_func_ptr_t ip_func_ptrs[] = {
		ip_print_help,
		IF_FEATURE_IP_ADDRESS(do_ipaddr,)
		IF_FEATURE_IP_ROUTE(do_iproute,)
		IF_FEATURE_IP_ROUTE(do_iproute,)
		IF_FEATURE_IP_LINK(do_iplink,)
		IF_FEATURE_IP_TUNNEL(do_iptunnel,)
		IF_FEATURE_IP_TUNNEL(do_iptunnel,)
		IF_FEATURE_IP_RULE(do_iprule,)
	};
	ip_func_ptr_t ip_func;
	int key;

	argv = ip_parse_common_args(argv + 1);
	key = *argv ? index_in_substrings(keywords, *argv++) : -1;
	ip_func = ip_func_ptrs[key + 1];

	return ip_func(argv);
}

#endif /* any of ENABLE_FEATURE_IP_xxx is 1 */