configure, netsniff-ng: make netsniff-ng's geoip dependency optional

Geoip dependency should not be mandatory as it's not a core part of
netsniff-ng. This also facilitates compilation on platforms where
geoip is not available.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/geoip.h b/geoip.h
index b6884e7..c84b335 100644
--- a/geoip.h
+++ b/geoip.h
@@ -1,8 +1,13 @@
 #ifndef GEOIPH_H
 #define GEOIPH_H
 
+#include <stdio.h>
 #include <netinet/in.h>
 
+#include "config.h"
+#include "die.h"
+
+#ifdef HAVE_GEOIP
 extern void init_geoip(int enforce);
 extern void update_geoip(void);
 extern int geoip_working(void);
@@ -19,5 +24,84 @@ extern float geoip6_latitude(struct sockaddr_in6 sa);
 extern const char *geoip4_as_name(struct sockaddr_in sa);
 extern const char *geoip6_as_name(struct sockaddr_in6 sa);
 extern void destroy_geoip(void);
+#else
+static inline void init_geoip(int enforce)
+{
+}
+
+static inline void destroy_geoip(void)
+{
+}
+
+static inline void update_geoip(void)
+{
+	panic("No built-in geoip support!\n");
+}
+
+static inline int geoip_working(void)
+{
+	return 0;
+}
+
+static inline const char *geoip4_city_name(struct sockaddr_in sa)
+{
+	return NULL;
+}
+
+static inline const char *geoip6_city_name(struct sockaddr_in6 sa)
+{
+	return NULL;
+}
+
+static inline const char *geoip4_region_name(struct sockaddr_in sa)
+{
+	return NULL;
+}
+
+static inline const char *geoip6_region_name(struct sockaddr_in6 sa)
+{
+	return NULL;
+}
+
+static inline const char *geoip4_country_name(struct sockaddr_in sa)
+{
+	return NULL;
+}
+
+static inline const char *geoip6_country_name(struct sockaddr_in6 sa)
+{
+	return NULL;
+}
+
+static inline float geoip4_longitude(struct sockaddr_in sa)
+{
+	return .0f;
+}
+
+static inline float geoip4_latitude(struct sockaddr_in sa)
+{
+	return .0f;
+}
+
+static inline float geoip6_longitude(struct sockaddr_in6 sa)
+{
+	return .0f;
+}
+
+static inline float geoip6_latitude(struct sockaddr_in6 sa)
+{
+	return .0f;
+}
+
+static inline const char *geoip4_as_name(struct sockaddr_in sa)
+{
+	return NULL;
+}
+
+static inline const char *geoip6_as_name(struct sockaddr_in6 sa)
+{
+	return NULL;
+}
+#endif
 
 #endif /* GEOIPH_H */