]> The Tcpdump Group git mirrors - tcpdump/blobdiff - print-null.c
CI: Add warning exemptions for Sun C (suncc-5.14) on Solaris 10
[tcpdump] / print-null.c
index 874521e24aca006c9fc776815f28c25259394b1d..725d583939afbae752c0866cd96c6eed17e7460b 100644 (file)
 
 /* \summary: BSD loopback device printer */
 
-#ifdef HAVE_CONFIG_H
 #include <config.h>
-#endif
 
 #include "netdissect-stdinc.h"
 
-#include <string.h>
-
+#define ND_LONGJMP_FROM_TCHECK
 #include "netdissect.h"
+#include "extract.h"
 #include "af.h"
 
+
 /*
  * The DLT_NULL packet header is 4 bytes long. It contains a host-byte-order
  * 32-bit integer that specifies the family, e.g. AF_INET.
@@ -53,7 +52,7 @@
 ((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff))
 
 static void
-null_hdr_print(netdissect_options *ndo, u_int family, u_int length)
+null_hdr_print(netdissect_options *ndo, uint32_t family, u_int length)
 {
        if (!ndo->ndo_qflag) {
                ND_PRINT("AF %s (%u)",
@@ -72,19 +71,18 @@ null_hdr_print(netdissect_options *ndo, u_int family, u_int length)
  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  * is the number of bytes actually captured.
  */
-u_int
+void
 null_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
 {
        u_int length = h->len;
        u_int caplen = h->caplen;
-       u_int family;
+       uint32_t family;
 
-       if (caplen < NULL_HDRLEN) {
-               ND_PRINT("[|null]");
-               return (NULL_HDRLEN);
-       }
+       ndo->ndo_protocol = "null";
+       ND_TCHECK_LEN(p, NULL_HDRLEN);
+       ndo->ndo_ll_hdr_len += NULL_HDRLEN;
 
-       memcpy((char *)&family, (const char *)p, sizeof(family));
+       family = GET_HE_U_4(p);
 
        /*
         * This isn't necessarily in our host byte order; if this is
@@ -106,25 +104,25 @@ null_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char
 
        switch (family) {
 
-       case BSD_AFNUM_INET:
+       case BSD_AF_INET:
                ip_print(ndo, p, length);
                break;
 
-       case BSD_AFNUM_INET6_BSD:
-       case BSD_AFNUM_INET6_FREEBSD:
-       case BSD_AFNUM_INET6_DARWIN:
+       case BSD_AF_INET6_BSD:
+       case BSD_AF_INET6_FREEBSD:
+       case BSD_AF_INET6_DARWIN:
                ip6_print(ndo, p, length);
                break;
 
-       case BSD_AFNUM_ISO:
+       case BSD_AF_ISO:
                isoclns_print(ndo, p, length);
                break;
 
-       case BSD_AFNUM_APPLETALK:
+       case BSD_AF_APPLETALK:
                atalk_print(ndo, p, length);
                break;
 
-       case BSD_AFNUM_IPX:
+       case BSD_AF_IPX:
                ipx_print(ndo, p, length);
                break;
 
@@ -135,13 +133,4 @@ null_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char
                if (!ndo->ndo_suppress_default_print)
                        ND_DEFAULTPRINT(p, caplen);
        }
-
-       return (NULL_HDRLEN);
 }
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 8
- * End:
- */