tls: can download kernels now :)
[oweals/busybox.git] / networking / ip.c
index 0042896676fee6e94665b15d8e40c134cf7f5973..0f52b19dd6371803020babc5866275a00e38fd5e 100644 (file)
 /* vi: set sw=4 ts=4: */
 /*
- * "ip" utility frontend.
- *
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * 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
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
  * Bernhard Reutner-Fischer rewrote to use index_in_substr_array
  */
+//config:config IP
+//config:      bool "ip"
+//config:      default y
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        The "ip" applet is a TCP/IP interface configuration and routing
+//config:        utility. You generally don't need "ip" to use busybox with
+//config:        TCP/IP.
+//config:
+//config:config IPADDR
+//config:      bool "ipaddr"
+//config:      default y
+//config:      select FEATURE_IP_ADDRESS
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        Support short form of ip addr: ipaddr
+//config:
+//config:config IPLINK
+//config:      bool "iplink"
+//config:      default y
+//config:      select FEATURE_IP_LINK
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        Support short form of ip link: iplink
+//config:
+//config:config IPROUTE
+//config:      bool "iproute"
+//config:      default y
+//config:      select FEATURE_IP_ROUTE
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        Support short form of ip route: iproute
+//config:
+//config:config IPTUNNEL
+//config:      bool "iptunnel"
+//config:      default y
+//config:      select FEATURE_IP_TUNNEL
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        Support short form of ip tunnel: iptunnel
+//config:
+//config:config IPRULE
+//config:      bool "iprule"
+//config:      default y
+//config:      select FEATURE_IP_RULE
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        Support short form of ip rule: iprule
+//config:
+//config:config IPNEIGH
+//config:      bool "ipneigh"
+//config:      default y
+//config:      select FEATURE_IP_NEIGH
+//config:      select PLATFORM_LINUX
+//config:      help
+//config:        Support short form of ip neigh: ipneigh
+//config:
+//config:config FEATURE_IP_ADDRESS
+//config:      bool "ip address"
+//config:      default y
+//config:      depends on IP || IPADDR
+//config:      help
+//config:        Address manipulation support for the "ip" applet.
+//config:
+//config:config FEATURE_IP_LINK
+//config:      bool "ip link"
+//config:      default y
+//config:      depends on IP || IPLINK
+//config:      help
+//config:        Configure network devices with "ip".
+//config:
+//config:config FEATURE_IP_ROUTE
+//config:      bool "ip route"
+//config:      default y
+//config:      depends on IP || IPROUTE
+//config:      help
+//config:        Add support for routing table management to "ip".
+//config:
+//config:config FEATURE_IP_ROUTE_DIR
+//config:      string "ip route configuration directory"
+//config:      default "/etc/iproute2"
+//config:      depends on FEATURE_IP_ROUTE
+//config:      help
+//config:        Location of the "ip" applet routing configuration.
+//config:
+//config:config FEATURE_IP_TUNNEL
+//config:      bool "ip tunnel"
+//config:      default y
+//config:      depends on IP || IPTUNNEL
+//config:      help
+//config:        Add support for tunneling commands to "ip".
+//config:
+//config:config FEATURE_IP_RULE
+//config:      bool "ip rule"
+//config:      default y
+//config:      depends on IP || IPRULE
+//config:      help
+//config:        Add support for rule commands to "ip".
+//config:
+//config:config FEATURE_IP_NEIGH
+//config:      bool "ip neighbor"
+//config:      default y
+//config:      depends on IP || IPNEIGH
+//config:      help
+//config:        Add support for neighbor commands to "ip".
+//config:
+//config:config FEATURE_IP_RARE_PROTOCOLS
+//config:      bool "Support displaying rarely used link types"
+//config:      default n
+//config:      depends on IP || IPADDR || IPLINK || IPROUTE || IPTUNNEL || IPRULE || IPNEIGH
+//config:      help
+//config:        If you are not going to use links of type "frad", "econet",
+//config:        "bif" etc, you probably don't need to enable this.
+//config:        Ethernet, wireless, infrared, ppp/slip, ip tunnelling
+//config:        link types are supported without this option selected.
+
+//applet:IF_IP(APPLET(ip, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_IPADDR(APPLET(ipaddr, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_IPLINK(APPLET(iplink, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_IPROUTE(APPLET(iproute, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_IPRULE(APPLET(iprule, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_IPTUNNEL(APPLET(iptunnel, BB_DIR_SBIN, BB_SUID_DROP))
+//applet:IF_IPNEIGH(APPLET(ipneigh, BB_DIR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_IP) += ip.o
+//kbuild:lib-$(CONFIG_IPADDR) += ip.o
+//kbuild:lib-$(CONFIG_IPLINK) += ip.o
+//kbuild:lib-$(CONFIG_IPROUTE) += ip.o
+//kbuild:lib-$(CONFIG_IPRULE) += ip.o
+//kbuild:lib-$(CONFIG_IPTUNNEL) += ip.o
+//kbuild:lib-$(CONFIG_IPNEIGH) += ip.o
+
+//usage:#define ipaddr_trivial_usage
+//usage:       "add|del IFADDR dev IFACE | show|flush [dev IFACE] [to PREFIX]"
+//usage:#define ipaddr_full_usage "\n\n"
+//usage:       "ipaddr add|change|replace|delete IFADDR dev IFACE\n"
+//usage:       "ipaddr show|flush [dev IFACE] [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 IFACE [up|down] [arp on|off] | show [IFACE]"
+//usage:#define iplink_full_usage "\n\n"
+//usage:       "iplink set IFACE [up|down]\n"
+//usage:       "       [arp on|off]\n"
+//usage:       "       [dynamic on|off]\n"
+//usage:       "       [multicast on|off]\n"
+//usage:       "       [mtu MTU]\n"
+//usage:       "iplink show [IFACE]"
+//usage:
+//usage:#define iproute_trivial_usage
+//usage:       "list|flush|add|del|change|append|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 SELECTOR ACTION"
+//usage:#define iprule_full_usage "\n\n"
+//usage:       "       SELECTOR := [from PREFIX] [to PREFIX] [tos TOS] [fwmark FWMARK]\n"
+//usage:       "                       [dev IFACE] [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]"
+//usage:
+//usage:#define ipneigh_trivial_usage
+//usage:       "show|flush [to PREFIX] [dev DEV] [nud STATE]"
+//usage:#define ipneigh_full_usage ""
+//usage:
+//usage:#if ENABLE_FEATURE_IP_ADDRESS || ENABLE_FEATURE_IP_ROUTE
+//usage:# define IP_BAR_LINK   "|"
+//usage:#else
+//usage:# define IP_BAR_LINK   ""
+//usage:#endif
+//usage:#if ENABLE_FEATURE_IP_ADDRESS || ENABLE_FEATURE_IP_ROUTE || ENABLE_FEATURE_IP_LINK
+//usage:# define IP_BAR_TUNNEL "|"
+//usage:#else
+//usage:# define IP_BAR_TUNNEL ""
+//usage:#endif
+//usage:#if ENABLE_FEATURE_IP_ADDRESS || ENABLE_FEATURE_IP_ROUTE || ENABLE_FEATURE_IP_LINK || ENABLE_FEATURE_IP_TUNNEL
+//usage:# define IP_BAR_NEIGH  "|"
+//usage:#else
+//usage:# define IP_BAR_NEIGH  ""
+//usage:#endif
+//usage:#if ENABLE_FEATURE_IP_ADDRESS || ENABLE_FEATURE_IP_ROUTE || ENABLE_FEATURE_IP_LINK || ENABLE_FEATURE_IP_TUNNEL || ENABLE_FEATURE_IP_NEIGH
+//usage:# define IP_BAR_RULE   "|"
+//usage:#else
+//usage:# define IP_BAR_RULE   ""
+//usage:#endif
+//usage:
+//usage:#define ip_trivial_usage
+//usage:       "[OPTIONS] "
+//usage:       IF_FEATURE_IP_ADDRESS("address")
+//usage:       IF_FEATURE_IP_ROUTE(  IF_FEATURE_IP_ADDRESS("|")"route")
+//usage:       IF_FEATURE_IP_LINK(   IP_BAR_LINK  "link")
+//usage:       IF_FEATURE_IP_TUNNEL( IP_BAR_TUNNEL"tunnel")
+//usage:       IF_FEATURE_IP_NEIGH(  IP_BAR_NEIGH "neigh")
+//usage:       IF_FEATURE_IP_RULE(   IP_BAR_RULE  "rule")
+//usage:       " [COMMAND]"
+//usage:#define ip_full_usage "\n\n"
+//usage:       "OPTIONS := -f[amily] inet|inet6|link | -o[neline]\n"
+//usage:       "COMMAND :="
+//usage:       IF_FEATURE_IP_ADDRESS("\n"
+//usage:       "ip addr "ipaddr_trivial_usage)
+//usage:       IF_FEATURE_IP_ROUTE("\n"
+//usage:       "ip route "iproute_trivial_usage)
+//usage:       IF_FEATURE_IP_LINK("\n"
+//usage:       "ip link "iplink_trivial_usage)
+//usage:       IF_FEATURE_IP_TUNNEL("\n"
+//usage:       "ip tunnel "iptunnel_trivial_usage)
+//usage:       IF_FEATURE_IP_NEIGH("\n"
+//usage:       "ip neigh "ipneigh_trivial_usage)
+//usage:       IF_FEATURE_IP_RULE("\n"
+//usage:       "ip rule "iprule_trivial_usage)
 
 #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**);
 
+#if ENABLE_IPADDR \
+ || ENABLE_IPLINK \
+ || ENABLE_IPROUTE \
+ || ENABLE_IPRULE \
+ || ENABLE_IPTUNNEL \
+ || ENABLE_IPNEIGH
 static int ip_do(ip_func_ptr_t ip_func, char **argv)
 {
        argv = ip_parse_common_args(argv + 1);
        return ip_func(argv);
 }
+#endif
 
-#if ENABLE_FEATURE_IP_ADDRESS
+#if ENABLE_IPADDR
 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
+#if ENABLE_IPLINK
 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
+#if ENABLE_IPROUTE
 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
+#if ENABLE_IPRULE
 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
+#if ENABLE_IPTUNNEL
 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
+#if ENABLE_IPNEIGH
+int ipneigh_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int ipneigh_main(int argc UNUSED_PARAM, char **argv)
+{
+       return ip_do(do_ipneigh, argv);
+}
+#endif
 
+#if ENABLE_IP
+static int FAST_FUNC ip_print_help(char **argv UNUSED_PARAM)
+{
+       bb_show_usage();
+}
 
 int ip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ip_main(int argc UNUSED_PARAM, char **argv)
 {
-       static const char keywords[] ALIGN1 =
+       static const char keywords[] ALIGN1 = ""
                IF_FEATURE_IP_ADDRESS("address\0")
                IF_FEATURE_IP_ROUTE("route\0")
                IF_FEATURE_IP_ROUTE("r\0")
@@ -83,6 +321,7 @@ int ip_main(int argc UNUSED_PARAM, char **argv)
                IF_FEATURE_IP_TUNNEL("tunnel\0")
                IF_FEATURE_IP_TUNNEL("tunl\0")
                IF_FEATURE_IP_RULE("rule\0")
+               IF_FEATURE_IP_NEIGH("neigh\0")
                ;
        static const ip_func_ptr_t ip_func_ptrs[] = {
                ip_print_help,
@@ -93,15 +332,18 @@ int ip_main(int argc UNUSED_PARAM, char **argv)
                IF_FEATURE_IP_TUNNEL(do_iptunnel,)
                IF_FEATURE_IP_TUNNEL(do_iptunnel,)
                IF_FEATURE_IP_RULE(do_iprule,)
+               IF_FEATURE_IP_NEIGH(do_ipneigh,)
        };
        ip_func_ptr_t ip_func;
        int key;
 
        argv = ip_parse_common_args(argv + 1);
-       key = *argv ? index_in_substrings(keywords, *argv++) : -1;
+       if (ARRAY_SIZE(ip_func_ptrs) > 1 && *argv)
+               key = index_in_substrings(keywords, *argv++);
+       else
+               key = -1;
        ip_func = ip_func_ptrs[key + 1];
 
        return ip_func(argv);
 }
-
-#endif /* any of ENABLE_FEATURE_IP_xxx is 1 */
+#endif