From c822b12cf17253cd59efdda0a21cd2f802c16a06 Mon Sep 17 00:00:00 2001
From: Thomas Haller <thaller@redhat.com>
Date: Mon, 26 Aug 2013 22:10:11 +0200
Subject: [PATCH] core: add nm_platform_ip4_route_to_string for debugging

Add convenience function to convert an IPv4 route to string.

Signed-off-by: Thomas Haller <thaller@redhat.com>
---
 src/platform/nm-platform.c | 29 +++++++++++++++++++++++++++++
 src/platform/nm-platform.h |  2 ++
 2 files changed, 31 insertions(+)

diff --git a/src/platform/nm-platform.c b/src/platform/nm-platform.c
index 86993db33f..4eeaaf92e6 100644
--- a/src/platform/nm-platform.c
+++ b/src/platform/nm-platform.c
@@ -1568,6 +1568,35 @@ nm_platform_route_flush (int ifindex)
 
 /******************************************************************/
 
+/**
+ * nm_platform_ip4_route_to_string:
+ * @route: pointer to NMPlatformIP4Route route structure
+ *
+ * A method for converting a route struct into a string representation.
+ * This is only useful for printf debugging, if you want to log what's
+ * currently happening.
+ *
+ * Returns: a string with the content of the route. Must be freed by g_free.
+ */
+char *
+nm_platform_ip4_route_to_string (const NMPlatformIP4Route *route)
+{
+	char s_network[INET_ADDRSTRLEN], s_gateway[INET_ADDRSTRLEN], s_dev[16];
+	if (!route) {
+		return g_strdup ("<NULL>");
+	}
+	if (route->ifindex > 0) {
+		g_snprintf (s_dev, sizeof(s_dev), " dev [%d]", route->ifindex);
+	} else {
+		s_dev[0] = 0;
+	}
+	inet_ntop (AF_INET, &route->network, s_network, sizeof(s_network));
+	inet_ntop (AF_INET, &route->gateway, s_gateway, sizeof(s_gateway));
+	return g_strdup_printf("%s/%d via %s%s metric %d mss %d",
+	                       s_network, route->plen, s_gateway, s_dev,
+	                       route->metric, route->mss);
+}
+
 static void
 log_link (NMPlatformLink *device, const char *change_type)
 {
diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index 6f72e5f53f..a09d1b3c09 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -420,6 +420,8 @@ gboolean nm_platform_ip4_route_sync (int ifindex, const GArray *known_routes);
 gboolean nm_platform_ip6_route_sync (int ifindex, const GArray *known_routes);
 gboolean nm_platform_route_flush (int ifindex);
 
+char *nm_platform_ip4_route_to_string (const NMPlatformIP4Route *route);
+
 #define auto_g_free __attribute__((cleanup(put_g_free)))
 static void __attribute__((unused))
 put_g_free (void *ptr)