X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/0b1de8f73d9b1484095a5ba484e83021ef7bc7ae..refs/pull/482/head:/print-gre.c diff --git a/print-gre.c b/print-gre.c index aafd8846..187a5b9f 100644 --- a/print-gre.c +++ b/print-gre.c @@ -32,7 +32,7 @@ */ /* - * tcpdump filter for GRE - Generic Routing Encapsulation + * netdissect printer for GRE - Generic Routing Encapsulation * RFC1701 (GRE), RFC1702 (GRE IPv4), and RFC2637 (Enhanced GRE) */ @@ -40,11 +40,12 @@ #include "config.h" #endif -#include +#include #include -#include "interface.h" +#include "netdissect.h" +#include "addrtostr.h" #include "extract.h" #include "ethertype.h" @@ -330,8 +331,8 @@ static void gre_sre_ip_print(netdissect_options *ndo, uint8_t sreoff, uint8_t srelen, const u_char *bp, u_int len) { - struct in_addr a; const u_char *up = bp; + char buf[INET_ADDRSTRLEN]; if (sreoff & 3) { ND_PRINT((ndo, ", badoffset=%u", sreoff)); @@ -350,10 +351,9 @@ gre_sre_ip_print(netdissect_options *ndo, uint8_t sreoff, uint8_t srelen, if (len < 4 || srelen == 0) return; - memcpy(&a, bp, sizeof(a)); + addrtostr(bp, buf, sizeof(buf)); ND_PRINT((ndo, " %s%s", - ((bp - up) == sreoff) ? "*" : "", - inet_ntoa(a))); + ((bp - up) == sreoff) ? "*" : "", buf)); bp += 4; len -= 4;