*: introduce and use xfork()

[oweals/busybox.git] / networking / ip.c

diff --git a/networking/ip.c b/networking/ip.c
index fe5714f166bbaba3c84a74244c7049315f448954..5249217eb37a8bcc15fc2bb18d52e788a5afc69a 100644 (file)
--- a/networking/ip.c
+++ b/networking/ip.c
@@ -10,52 +10,114 @@
  * Changes:
  *
  * Rani Assaf <rani@magic.metawire.com> 980929:        resolve addresses
+ * Bernhard Fischer rewrote to use index_in_substr_array
  */
 
-#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 "libbb.h"
 
 #include "libiproute/utils.h"
 #include "libiproute/ip_common.h"
 
-#include "busybox.h"
+#if ENABLE_FEATURE_IP_ADDRESS \
+ || ENABLE_FEATURE_IP_ROUTE \
+ || ENABLE_FEATURE_IP_LINK \
+ || ENABLE_FEATURE_IP_TUNNEL \
+ || ENABLE_FEATURE_IP_RULE
 
-int ip_main(int argc, char **argv)
+static int ATTRIBUTE_NORETURN ip_print_help(char ATTRIBUTE_UNUSED **argv)
 {
-       int ret = EXIT_FAILURE;
+       bb_show_usage();
+}
 
-       ip_parse_common_args(&argc, &argv);
+static int ip_do(int (*ip_func)(char **argv), char **argv)
+{
+       argv = ip_parse_common_args(argv);
+       return ip_func(argv);
+}
 
-       if (argc > 1) {
-#ifdef CONFIG_FEATURE_IP_ADDRESS
-               if (matches(argv[1], "address") == 0) {
-                       ret = do_ipaddr(argc-2, argv+2);
-               }
+#if ENABLE_FEATURE_IP_ADDRESS
+int ipaddr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int ipaddr_main(int argc ATTRIBUTE_UNUSED, char **argv)
+{
+       return ip_do(do_ipaddr, argv);
+}
 #endif
-#ifdef CONFIG_FEATURE_IP_ROUTE
-               if (matches(argv[1], "route") == 0) {
-                       ret = do_iproute(argc-2, argv+2);
-               }
+#if ENABLE_FEATURE_IP_LINK
+int iplink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int iplink_main(int argc ATTRIBUTE_UNUSED, char **argv)
+{
+       return ip_do(do_iplink, argv);
+}
 #endif
-#ifdef CONFIG_FEATURE_IP_LINK
-               if (matches(argv[1], "link") == 0) {
-                       ret = do_iplink(argc-2, argv+2);
-               }
+#if ENABLE_FEATURE_IP_ROUTE
+int iproute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int iproute_main(int argc ATTRIBUTE_UNUSED, char **argv)
+{
+       return ip_do(do_iproute, argv);
+}
 #endif
-#ifdef CONFIG_FEATURE_IP_TUNNEL
-               if (matches(argv[1], "tunnel") == 0 || strcmp(argv[1], "tunl") == 0) {
-                       ret = do_iptunnel(argc-2, argv+2);
-               }
+#if ENABLE_FEATURE_IP_RULE
+int iprule_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int iprule_main(int argc ATTRIBUTE_UNUSED, 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 ATTRIBUTE_UNUSED, char **argv)
+{
+       return ip_do(do_iptunnel, argv);
+}
+#endif
+
+
+int ip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int ip_main(int argc ATTRIBUTE_UNUSED, char **argv)
+{
+       static const char keywords[] ALIGN1 =
+               USE_FEATURE_IP_ADDRESS("address\0")
+               USE_FEATURE_IP_ROUTE("route\0")
+               USE_FEATURE_IP_LINK("link\0")
+               USE_FEATURE_IP_TUNNEL("tunnel\0" "tunl\0")
+               USE_FEATURE_IP_RULE("rule\0")
+               ;
+       enum {
+               USE_FEATURE_IP_ADDRESS(IP_addr,)
+               USE_FEATURE_IP_ROUTE(IP_route,)
+               USE_FEATURE_IP_LINK(IP_link,)
+               USE_FEATURE_IP_TUNNEL(IP_tunnel, IP_tunl,)
+               USE_FEATURE_IP_RULE(IP_rule,)
+               IP_none
+       };
+       int (*ip_func)(char**) = ip_print_help;
+
+       argv = ip_parse_common_args(argv + 1);
+       if (*argv) {
+               int key = index_in_substrings(keywords, *argv);
+               argv++;
+#if ENABLE_FEATURE_IP_ADDRESS
+               if (key == IP_addr)
+                       ip_func = do_ipaddr;
+#endif
+#if ENABLE_FEATURE_IP_ROUTE
+               if (key == IP_route)
+                       ip_func = do_iproute;
+#endif
+#if ENABLE_FEATURE_IP_LINK
+               if (key == IP_link)
+                       ip_func = do_iplink;
+#endif
+#if ENABLE_FEATURE_IP_TUNNEL
+               if (key == IP_tunnel || key == IP_tunl)
+                       ip_func = do_iptunnel;
+#endif
+#if ENABLE_FEATURE_IP_RULE
+               if (key == IP_rule)
+                       ip_func = do_iprule;
 #endif
        }
-       if (ret) {
-               bb_show_usage();
-       }
-       return(EXIT_SUCCESS);
+       return ip_func(argv);
 }
+
+#endif /* any of ENABLE_FEATURE_IP_xxx is 1 */