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mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2024-12-25 20:43:55 +02:00
openwrt-xburst/package/busybox/patches/450-truncated_ping_results.patch
nbd b5cb1795de refresh all package patches in the buildroot using quilt
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7490 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-06-04 11:25:53 +00:00

34 lines
1.1 KiB
Diff

Index: busybox-1.4.2/networking/ping.c
===================================================================
--- busybox-1.4.2.orig/networking/ping.c 2007-06-04 13:21:31.931122400 +0200
+++ busybox-1.4.2/networking/ping.c 2007-06-04 13:21:36.518425024 +0200
@@ -70,7 +70,7 @@
struct sockaddr_in pingaddr;
struct icmp *pkt;
int pingsock, c;
- char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
+ char packet[datalen + ICMP_MINLEN + MAXIPLEN + MAXICMPLEN];
pingsock = create_icmp_socket();
@@ -86,7 +86,7 @@
pkt->icmp_type = ICMP_ECHO;
pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(packet));
- c = sendto(pingsock, packet, DEFDATALEN + ICMP_MINLEN, 0,
+ c = sendto(pingsock, packet, datalen + ICMP_MINLEN, 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in));
if (c < 0) {
@@ -274,6 +274,10 @@
++nreceived;
tp = (struct timeval *) icmppkt->icmp_data;
+ /* If packet is too short, results will be truncated */
+ if (sz < (ICMP_MINLEN + sizeof(tv.tv_sec) + sizeof(tv.tv_usec)))
+ return;
+
if ((tv.tv_usec -= tp->tv_usec) < 0) {
--tv.tv_sec;
tv.tv_usec += 1000000;