From 1494d0bcb29e9af40a1f085ae6b940cb5b5799f0 Mon Sep 17 00:00:00 2001
From: Laurent Ghigonis <laurent@p1sec.com>
Date: Sat, 8 Jun 2013 16:30:36 +0200
Subject: libglouglou: traceroute delay

---
 libglouglou/examples/traceroute.c |  2 +-
 libglouglou/libggnet_traceroute.c | 24 ++++++++++++++++++++++--
 libglouglou/libggnet_traceroute.h |  9 +++++----
 libglouglou/utils.c               |  1 +
 4 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/libglouglou/examples/traceroute.c b/libglouglou/examples/traceroute.c
index 5a618a2..a791b4d 100644
--- a/libglouglou/examples/traceroute.c
+++ b/libglouglou/examples/traceroute.c
@@ -55,7 +55,7 @@ main(int argc, char *argv[])
 	if (_answer) {
 		printf("%s:\n", addr_ntoa(&ip));
 		TAILQ_FOREACH(hop, &_route->hops_list, entry) {
-			printf("%2.2d: %s (%d) [XXX %p]\n", hop->ttl, addr_ntoa(&hop->ip), hop->delay, hop);
+			printf("%.2d: %s %s %.2f [XXX %p]\n", hop->ttl, addr_ntoa(&hop->ip), hop->answer, hop->delay, hop);
 		}
 	} else {
 		printf("no answer\n");
diff --git a/libglouglou/libggnet_traceroute.c b/libglouglou/libggnet_traceroute.c
index 602e349..bd5d76f 100644
--- a/libglouglou/libggnet_traceroute.c
+++ b/libglouglou/libggnet_traceroute.c
@@ -86,6 +86,7 @@ static struct ggnet_traceroute_hop *
 static struct ggnet_traceroute_hop *
 	_hop_last(struct ggnet_traceroute_req *);
 static int pcap_dloff(pcap_t *); // XXX move to libggnet_utils ?
+double timeval_diff(struct timeval *, struct timeval *);
 
 struct trace_pkt {
 	union {
@@ -288,6 +289,7 @@ _cb_send(evutil_socket_t fd, short what, void *arg)
 		}
 		ip_checksum(pkt, len);
 		TAILQ_INSERT_TAIL(&req->hops_list, hop, entry);
+		gettimeofday(&hop->sendtime, NULL);
 		for (i=0; i<TRACEROUTE_NB_PROBES; i++) {
 			hop->ip_ids[i] = ip_id;
 			hop->sports[i] = sport;
@@ -307,7 +309,7 @@ static void
 _cb_recv(evutil_socket_t fd, short what, void *arg)
 {
 	struct ggnet_traceroute_req *req;
-	struct ggnet_traceroute_hop *hop;
+	struct ggnet_traceroute_hop *hop = NULL;
 	struct ggnet_traceroute *ggtr;
 	struct pcap_pkthdr ph;
 	u_char *pread;
@@ -315,6 +317,7 @@ _cb_recv(evutil_socket_t fd, short what, void *arg)
 	struct tcp_hdr *tcp;
 	struct icmp_hdr *icmp;
 	struct addr ip_src;
+	struct timeval recvtime;
 	char  *p, *flags;
 
 	req = arg;
@@ -402,7 +405,7 @@ _cb_recv(evutil_socket_t fd, short what, void *arg)
 						break;
 				}
 			} else if (icmp->icmp_type == ICMP_TIMEXCEED) {
-				strncpy(hop->answer, "A!", sizeof(hop->answer));
+				strncpy(hop->answer, "X!", sizeof(hop->answer));
 			}
 			if (hop->ttl == req->run.last_ttl_sent &&
 					addr_cmp(&hop->ip, &req->target->ip)) {
@@ -414,6 +417,11 @@ _cb_recv(evutil_socket_t fd, short what, void *arg)
 
 reschedule_recv:
 	event_add(req->run.ev_recv, NULL);
+
+	if (hop) {
+		gettimeofday(&recvtime, NULL);
+		hop->delay = timeval_diff(&hop->sendtime, &recvtime) / 1000;
+	}
 }
 
 static void
@@ -550,3 +558,15 @@ freerrset(answers);
 return asn;
 }
 */
+
+double
+timeval_diff(struct timeval *x, struct timeval *y)
+{
+    double x_ms , y_ms , diff;
+     
+    x_ms = (double)x->tv_sec*1000000 + (double)x->tv_usec;
+    y_ms = (double)y->tv_sec*1000000 + (double)y->tv_usec;
+    diff = (double)y_ms - (double)x_ms;
+     
+    return diff;
+}
diff --git a/libglouglou/libggnet_traceroute.h b/libglouglou/libggnet_traceroute.h
index 5b172a9..85af279 100644
--- a/libglouglou/libggnet_traceroute.h
+++ b/libglouglou/libggnet_traceroute.h
@@ -24,10 +24,11 @@ struct ggnet_traceroute_hop {
 	int	ip_ids[TRACEROUTE_NB_PROBES];
 	int	sports[TRACEROUTE_NB_PROBES];
 	struct addr ip;
-	int	delay;
-	int	delay_dev;
-	int	loss;
-	int	loss_dev;
+	struct timeval sendtime;
+	float	delay;
+	float	delay_dev;
+	float	loss;
+	float	loss_dev;
 	int	asn;
 };
 
diff --git a/libglouglou/utils.c b/libglouglou/utils.c
index a7ceffd..050a753 100644
--- a/libglouglou/utils.c
+++ b/libglouglou/utils.c
@@ -214,3 +214,4 @@ get_iface(char *ip) {
 
 	return strdup(entry.intf_name);
 }
+
-- 
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