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path: root/networking/ip.c (plain)
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1/* vi: set sw=4 ts=4: */
2/*
3 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
4 *
5 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
6 *
7 * Changes:
8 * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
9 * Bernhard Reutner-Fischer rewrote to use index_in_substr_array
10 */
11//config:config IP
12//config: bool "ip"
13//config: default y
14//config: select PLATFORM_LINUX
15//config: help
16//config: The "ip" applet is a TCP/IP interface configuration and routing
17//config: utility. You generally don't need "ip" to use busybox with
18//config: TCP/IP.
19//config:
20//config:config IPADDR
21//config: bool "ipaddr"
22//config: default y
23//config: select FEATURE_IP_ADDRESS
24//config: select PLATFORM_LINUX
25//config: help
26//config: Support short form of ip addr: ipaddr
27//config:
28//config:config IPLINK
29//config: bool "iplink"
30//config: default y
31//config: select FEATURE_IP_LINK
32//config: select PLATFORM_LINUX
33//config: help
34//config: Support short form of ip link: iplink
35//config:
36//config:config IPROUTE
37//config: bool "iproute"
38//config: default y
39//config: select FEATURE_IP_ROUTE
40//config: select PLATFORM_LINUX
41//config: help
42//config: Support short form of ip route: iproute
43//config:
44//config:config IPTUNNEL
45//config: bool "iptunnel"
46//config: default y
47//config: select FEATURE_IP_TUNNEL
48//config: select PLATFORM_LINUX
49//config: help
50//config: Support short form of ip tunnel: iptunnel
51//config:
52//config:config IPRULE
53//config: bool "iprule"
54//config: default y
55//config: select FEATURE_IP_RULE
56//config: select PLATFORM_LINUX
57//config: help
58//config: Support short form of ip rule: iprule
59//config:
60//config:config IPNEIGH
61//config: bool "ipneigh"
62//config: default y
63//config: select FEATURE_IP_NEIGH
64//config: select PLATFORM_LINUX
65//config: help
66//config: Support short form of ip neigh: ipneigh
67//config:
68//config:config FEATURE_IP_ADDRESS
69//config: bool "ip address"
70//config: default y
71//config: depends on IP || IPADDR
72//config: help
73//config: Address manipulation support for the "ip" applet.
74//config:
75//config:config FEATURE_IP_LINK
76//config: bool "ip link"
77//config: default y
78//config: depends on IP || IPLINK
79//config: help
80//config: Configure network devices with "ip".
81//config:
82//config:config FEATURE_IP_ROUTE
83//config: bool "ip route"
84//config: default y
85//config: depends on IP || IPROUTE
86//config: help
87//config: Add support for routing table management to "ip".
88//config:
89//config:config FEATURE_IP_ROUTE_DIR
90//config: string "ip route configuration directory"
91//config: default "/etc/iproute2"
92//config: depends on FEATURE_IP_ROUTE
93//config: help
94//config: Location of the "ip" applet routing configuration.
95//config:
96//config:config FEATURE_IP_TUNNEL
97//config: bool "ip tunnel"
98//config: default y
99//config: depends on IP || IPTUNNEL
100//config: help
101//config: Add support for tunneling commands to "ip".
102//config:
103//config:config FEATURE_IP_RULE
104//config: bool "ip rule"
105//config: default y
106//config: depends on IP || IPRULE
107//config: help
108//config: Add support for rule commands to "ip".
109//config:
110//config:config FEATURE_IP_NEIGH
111//config: bool "ip neighbor"
112//config: default y
113//config: depends on IP || IPNEIGH
114//config: help
115//config: Add support for neighbor commands to "ip".
116//config:
117//config:config FEATURE_IP_RARE_PROTOCOLS
118//config: bool "Support displaying rarely used link types"
119//config: default n
120//config: depends on IP || IPADDR || IPLINK || IPROUTE || IPTUNNEL || IPRULE || IPNEIGH
121//config: help
122//config: If you are not going to use links of type "frad", "econet",
123//config: "bif" etc, you probably don't need to enable this.
124//config: Ethernet, wireless, infrared, ppp/slip, ip tunnelling
125//config: link types are supported without this option selected.
126
127//applet:IF_IP(APPLET(ip, BB_DIR_SBIN, BB_SUID_DROP))
128//applet:IF_IPADDR(APPLET(ipaddr, BB_DIR_SBIN, BB_SUID_DROP))
129//applet:IF_IPLINK(APPLET(iplink, BB_DIR_SBIN, BB_SUID_DROP))
130//applet:IF_IPROUTE(APPLET(iproute, BB_DIR_SBIN, BB_SUID_DROP))
131//applet:IF_IPRULE(APPLET(iprule, BB_DIR_SBIN, BB_SUID_DROP))
132//applet:IF_IPTUNNEL(APPLET(iptunnel, BB_DIR_SBIN, BB_SUID_DROP))
133//applet:IF_IPNEIGH(APPLET(ipneigh, BB_DIR_SBIN, BB_SUID_DROP))
134
135//kbuild:lib-$(CONFIG_IP) += ip.o
136//kbuild:lib-$(CONFIG_IPADDR) += ip.o
137//kbuild:lib-$(CONFIG_IPLINK) += ip.o
138//kbuild:lib-$(CONFIG_IPROUTE) += ip.o
139//kbuild:lib-$(CONFIG_IPRULE) += ip.o
140//kbuild:lib-$(CONFIG_IPTUNNEL) += ip.o
141//kbuild:lib-$(CONFIG_IPNEIGH) += ip.o
142
143/* would need to make the " | " optional depending on more than one selected: */
144//usage:#define ip_trivial_usage
145//usage: "[OPTIONS] {"
146//usage: IF_FEATURE_IP_ADDRESS("address | ")
147//usage: IF_FEATURE_IP_ROUTE("route | ")
148//usage: IF_FEATURE_IP_LINK("link | ")
149//usage: IF_FEATURE_IP_TUNNEL("tunnel | ")
150//usage: IF_FEATURE_IP_NEIGH("neigh | ")
151//usage: IF_FEATURE_IP_RULE("rule")
152//usage: "} {COMMAND}"
153//usage:#define ip_full_usage "\n\n"
154//usage: "ip [OPTIONS] OBJECT {COMMAND}\n"
155//usage: "where OBJECT := {"
156//usage: IF_FEATURE_IP_ADDRESS("address | ")
157//usage: IF_FEATURE_IP_ROUTE("route | ")
158//usage: IF_FEATURE_IP_LINK("link | ")
159//usage: IF_FEATURE_IP_TUNNEL("tunnel | ")
160//usage: IF_FEATURE_IP_NEIGH("neigh | ")
161//usage: IF_FEATURE_IP_RULE("rule")
162//usage: "}\n"
163//usage: "OPTIONS := { -f[amily] { inet | inet6 | link } | -o[neline] }"
164//usage:
165//usage:#define ipaddr_trivial_usage
166//usage: "{ {add|del} IFADDR dev STRING | {show|flush}\n"
167//usage: " [dev STRING] [to PREFIX] }"
168//usage:#define ipaddr_full_usage "\n\n"
169//usage: "ipaddr {add|change|replace|delete} IFADDR dev STRING\n"
170//usage: "ipaddr {show|flush} [dev STRING] [scope SCOPE-ID]\n"
171//usage: " [to PREFIX] [label PATTERN]\n"
172//usage: " IFADDR := PREFIX | ADDR peer PREFIX\n"
173//usage: " [broadcast ADDR] [anycast ADDR]\n"
174//usage: " [label STRING] [scope SCOPE-ID]\n"
175//usage: " SCOPE-ID := [host | link | global | NUMBER]"
176//usage:
177//usage:#define iplink_trivial_usage
178//usage: "{ set DEVICE { up | down | arp { on | off } | show [DEVICE] }"
179//usage:#define iplink_full_usage "\n\n"
180//usage: "iplink set DEVICE { up | down | arp | multicast { on | off } |\n"
181//usage: " dynamic { on | off } |\n"
182//usage: " mtu MTU }\n"
183//usage: "iplink show [DEVICE]"
184//usage:
185//usage:#define iproute_trivial_usage
186//usage: "{ list | flush | add | del | change | append |\n"
187//usage: " replace | test } ROUTE"
188//usage:#define iproute_full_usage "\n\n"
189//usage: "iproute { list | flush } SELECTOR\n"
190//usage: "iproute get ADDRESS [from ADDRESS iif STRING]\n"
191//usage: " [oif STRING] [tos TOS]\n"
192//usage: "iproute { add | del | change | append | replace | test } ROUTE\n"
193//usage: " SELECTOR := [root PREFIX] [match PREFIX] [proto RTPROTO]\n"
194//usage: " ROUTE := [TYPE] PREFIX [tos TOS] [proto RTPROTO] [metric METRIC]"
195//usage:
196//usage:#define iprule_trivial_usage
197//usage: "{[list | add | del] RULE}"
198//usage:#define iprule_full_usage "\n\n"
199//usage: "iprule [list | add | del] SELECTOR ACTION\n"
200//usage: " SELECTOR := [from PREFIX] [to PREFIX] [tos TOS] [fwmark FWMARK]\n"
201//usage: " [dev STRING] [pref NUMBER]\n"
202//usage: " ACTION := [table TABLE_ID] [nat ADDRESS]\n"
203//usage: " [prohibit | reject | unreachable]\n"
204//usage: " [realms [SRCREALM/]DSTREALM]\n"
205//usage: " TABLE_ID := [local | main | default | NUMBER]"
206//usage:
207//usage:#define iptunnel_trivial_usage
208//usage: "{ add | change | del | show } [NAME]\n"
209//usage: " [mode { ipip | gre | sit }]\n"
210//usage: " [remote ADDR] [local ADDR] [ttl TTL]"
211//usage:#define iptunnel_full_usage "\n\n"
212//usage: "iptunnel { add | change | del | show } [NAME]\n"
213//usage: " [mode { ipip | gre | sit }] [remote ADDR] [local ADDR]\n"
214//usage: " [[i|o]seq] [[i|o]key KEY] [[i|o]csum]\n"
215//usage: " [ttl TTL] [tos TOS] [[no]pmtudisc] [dev PHYS_DEV]"
216//usage:
217//usage:#define ipneigh_trivial_usage
218//usage: "{ show | flush} [ to PREFIX ] [ dev DEV ] [ nud STATE ]"
219//usage:#define ipneigh_full_usage "\n\n"
220//usage: "ipneigh { show | flush} [ to PREFIX ] [ dev DEV ] [ nud STATE ]"
221
222#include "libbb.h"
223
224#include "libiproute/utils.h"
225#include "libiproute/ip_common.h"
226
227typedef int FAST_FUNC (*ip_func_ptr_t)(char**);
228
229#if ENABLE_IPADDR \
230 || ENABLE_IPLINK \
231 || ENABLE_IPROUTE \
232 || ENABLE_IPRULE \
233 || ENABLE_IPTUNNEL \
234 || ENABLE_IPNEIGH
235static int ip_do(ip_func_ptr_t ip_func, char **argv)
236{
237 argv = ip_parse_common_args(argv + 1);
238 return ip_func(argv);
239}
240#endif
241
242#if ENABLE_IPADDR
243int ipaddr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
244int ipaddr_main(int argc UNUSED_PARAM, char **argv)
245{
246 return ip_do(do_ipaddr, argv);
247}
248#endif
249#if ENABLE_IPLINK
250int iplink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
251int iplink_main(int argc UNUSED_PARAM, char **argv)
252{
253 return ip_do(do_iplink, argv);
254}
255#endif
256#if ENABLE_IPROUTE
257int iproute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
258int iproute_main(int argc UNUSED_PARAM, char **argv)
259{
260 return ip_do(do_iproute, argv);
261}
262#endif
263#if ENABLE_IPRULE
264int iprule_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
265int iprule_main(int argc UNUSED_PARAM, char **argv)
266{
267 return ip_do(do_iprule, argv);
268}
269#endif
270#if ENABLE_IPTUNNEL
271int iptunnel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
272int iptunnel_main(int argc UNUSED_PARAM, char **argv)
273{
274 return ip_do(do_iptunnel, argv);
275}
276#endif
277#if ENABLE_IPNEIGH
278int ipneigh_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
279int ipneigh_main(int argc UNUSED_PARAM, char **argv)
280{
281 return ip_do(do_ipneigh, argv);
282}
283#endif
284
285#if ENABLE_IP
286static int FAST_FUNC ip_print_help(char **argv UNUSED_PARAM)
287{
288 bb_show_usage();
289}
290
291int ip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
292int ip_main(int argc UNUSED_PARAM, char **argv)
293{
294 static const char keywords[] ALIGN1 = ""
295 IF_FEATURE_IP_ADDRESS("address\0")
296 IF_FEATURE_IP_ROUTE("route\0")
297 IF_FEATURE_IP_ROUTE("r\0")
298 IF_FEATURE_IP_LINK("link\0")
299 IF_FEATURE_IP_TUNNEL("tunnel\0")
300 IF_FEATURE_IP_TUNNEL("tunl\0")
301 IF_FEATURE_IP_RULE("rule\0")
302 IF_FEATURE_IP_NEIGH("neigh\0")
303 ;
304 static const ip_func_ptr_t ip_func_ptrs[] = {
305 ip_print_help,
306 IF_FEATURE_IP_ADDRESS(do_ipaddr,)
307 IF_FEATURE_IP_ROUTE(do_iproute,)
308 IF_FEATURE_IP_ROUTE(do_iproute,)
309 IF_FEATURE_IP_LINK(do_iplink,)
310 IF_FEATURE_IP_TUNNEL(do_iptunnel,)
311 IF_FEATURE_IP_TUNNEL(do_iptunnel,)
312 IF_FEATURE_IP_RULE(do_iprule,)
313 IF_FEATURE_IP_NEIGH(do_ipneigh,)
314 };
315 ip_func_ptr_t ip_func;
316 int key;
317
318 argv = ip_parse_common_args(argv + 1);
319 if (ARRAY_SIZE(ip_func_ptrs) > 1 && *argv)
320 key = index_in_substrings(keywords, *argv++);
321 else
322 key = -1;
323 ip_func = ip_func_ptrs[key + 1];
324
325 return ip_func(argv);
326}
327#endif
328
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