rawnet - add rawnet_status() call to check if interface is open.

src/rawnet/rawnet.c

@@ -76,4 +76,11 @@ char *rawnet_get_standard_interface(void)
 {
     return rawnet_arch_get_standard_interface();
 }
+
+extern int rawnet_status(void)
+{
+    return rawnet_arch_status();
+}
+
+
 #endif /* #ifdef HAVE_RAWNET */

src/rawnet/rawnet.h

@@ -72,4 +72,6 @@ extern int rawnet_enumadapter(char **ppname, char **ppdescription);
 extern int rawnet_enumadapter_close(void);
 extern char *rawnet_get_standard_interface(void);
 
+extern int rawnet_status(void);
+
 #endif

src/rawnet/rawnetarch.h

@@ -69,4 +69,6 @@ extern char *rawnet_arch_get_standard_interface(void);
 extern int rawnet_arch_get_mtu(void);
 extern int rawnet_arch_get_mac(uint8_t mac[6]);
 
+extern int rawnet_arch_status(void);
+
 #endif

src/rawnet/rawnetarch_darwin.c

@@ -498,3 +498,8 @@ int rawnet_arch_get_mac(uint8_t mac[6]) {
 	return -1;
 }
 
+
+int rawnet_arch_status(void) {
+	return interface ? 1 : 0;
+}
+

src/rawnet/rawnetarch_tap.c

@@ -307,3 +307,7 @@ int rawnet_arch_get_mac(uint8_t mac[6]) {
 
 }
 
+int rawnet_arch_status(void) {
+	return interface_fd >= 0 ? 1 : 0;
+}
+

src/rawnet/rawnetarch_unix.c

@@ -543,4 +543,9 @@ extern int rawnet_arch_get_mac(uint8_t mac[6]) {
     return -1;
 }
 
+int rawnet_arch_status(void) {
+    return rawnet_pcap_fp ? 1 : 0;
+}
+
+
 #endif /* #ifdef HAVE_RAWNET */

src/rawnet/rawnetarch_win32.c

@@ -562,4 +562,9 @@ extern int rawnet_arch_get_mac(uint8_t mac[6]) {
     return -1;
 }
 
+int rawnet_arch_status(void) {
+    return EthernetPcapFP ? 1 : 0;
+}
+
+
 #endif /* #ifdef HAVE_RAWNET */