UDP: Fix the uses of the pointer to the end of current packet

Must be based on packet header caplen.

diff --git a/print-udp.c b/print-udp.c
index 2bb5eac568feb3626c3daa3f1fd01a90679dbe23..8c558cf5921592b08c0ddae7e84f6adc1f178c20 100644 (file)
--- a/print-udp.c
+++ b/print-udp.c
@@ -386,12 +386,10 @@ udp_print(netdissect_options *ndo, const u_char *bp, u_int length,
        const struct udphdr *up;
        const struct ip *ip;
        const u_char *cp;
-       const u_char *ep = bp + length;
+       const u_char *ep = ndo->ndo_snapend;
        uint16_t sport, dport, ulen;
        const struct ip6_hdr *ip6;
 
-       if (ep > ndo->ndo_snapend)
-               ep = ndo->ndo_snapend;
        up = (const struct udphdr *)bp;
        ip = (const struct ip *)bp2;
        if (IP_V(ip) == 6)