tcpsvd,udpsvd: conditionalize usage of SO_ORIGINAL_DST

On systems without this call, $TCPORIGDSTADDR is not set.

Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 5 insertions, 2 deletions

diff --git a/networking/Config.src b/networking/Config.src
index fc613e8d3..2d29c423a 100644
--- a/networking/Config.src
+++ b/networking/Config.src
@@ -733,7 +733,6 @@ config SLATTACH
 config TCPSVD
         bool "tcpsvd"
         default y
-        depends on PLATFORM_LINUX
         help
           tcpsvd listens on a TCP port and runs a program for each new
           connection.
@@ -966,7 +965,6 @@ config IFUPDOWN_UDHCPC_CMD_OPTIONS
 config UDPSVD
         bool "udpsvd"
         default y
-        depends on PLATFORM_LINUX
         help
           udpsvd listens on an UDP port and runs a program for each new
           connection.
diff --git a/networking/tcpudp.c b/networking/tcpudp.c
index 53e622b56..40f68258e 100644
--- a/networking/tcpudp.c
+++ b/networking/tcpudp.c
@@ -30,9 +30,12 @@
  */
 
 #include "libbb.h"
+
 /* Wants <limits.h> etc, thus included after libbb.h: */
+#ifdef __linux__
 #include <linux/types.h> /* for __be32 etc */
 #include <linux/netfilter_ipv4.h>
+#endif
 
 // TODO: move into this file:
 #include "tcpudp_perhost.h"
@@ -464,6 +467,7 @@ int tcpudpsvd_main(int argc UNUSED_PARAM, char **argv)
                         /* setup ucspi env */
                         const char *proto = tcp ? "TCP" : "UDP";
 
+#ifdef SO_ORIGINAL_DST
                         /* Extract "original" destination addr:port
                          * from Linux firewall. Useful when you redirect
                          * an outbond connection to local handler, and it needs
@@ -473,6 +477,7 @@ int tcpudpsvd_main(int argc UNUSED_PARAM, char **argv)
                                 xsetenv_plain("TCPORIGDSTADDR", addr);
                                 free(addr);
                         }
+#endif
                         xsetenv_plain("PROTO", proto);
                         xsetenv_proto(proto, "LOCALADDR", local_addr);
                         xsetenv_proto(proto, "REMOTEADDR", remote_addr);