Add an additional DONT_HAVE_PCAP return value from get_interface_list()

and capture_interface_list().  Return it if, on Windows, we ask for the
interface list but don't have WinPcap installed.  Handle it like
CANT_GET_INTERFACE_LIST.

svn path=/trunk/; revision=40334

1 files changed, 12 insertions, 0 deletions

diff --git a/capture-wpcap.c b/capture-wpcap.c
index 9dd7903ddd..f831f225f1 100644
--- a/capture-wpcap.c
+++ b/capture-wpcap.c
@@ -35,6 +35,8 @@
 #include "capture_ifinfo.h"
 #include "capture-pcap-util.h"
 #include "capture-pcap-util-int.h"
+#include "capture-wpcap.h"
+#include "capture_errs.h"
 
 #include <wsutil/file_util.h>
 
@@ -694,6 +696,16 @@ get_interface_list(int *err, char **err_str)
 	int i, j;
 	char errbuf[PCAP_ERRBUF_SIZE];
 
+	if (!has_wpcap) {
+		/*
+		 * We don't have WinPcap, so we can't get a list of
+		 * interfaces.
+		 */
+		*err = DONT_HAVE_PCAP;
+		*err_str = cant_load_winpcap_err("you");
+		return NULL;
+	}
+
 #ifdef HAVE_PCAP_FINDALLDEVS
 	if (p_pcap_findalldevs != NULL)
 		return get_interface_list_findalldevs(err, err_str);