static void
krb4_print(netdissect_options *ndo,
const u_char *cp)
{
register const struct krb *kp;
u_char type;
u_short len;
#define PRINT if ((cp = c_print(ndo, cp, ndo->ndo_snapend)) == NULL) goto trunc
/* True if struct krb is little endian */
#define IS_LENDIAN(kp) (((kp)->type & 0x01) != 0)
#define KTOHSP(kp, cp) (IS_LENDIAN(kp) ? EXTRACT_LE_16BITS(cp) : EXTRACT_16BITS(cp))
kp = (const struct krb *)cp;
if ((&kp->type) >= ndo->ndo_snapend) {
ND_PRINT((ndo, "%s", tstr));
return;
}
type = kp->type & (0xFF << 1);
ND_PRINT((ndo, " %s %s: ",
IS_LENDIAN(kp) ? "le" : "be", tok2str(type2str, NULL, type)));
switch (type) {
case AUTH_MSG_KDC_REQUEST:
if ((cp = krb4_print_hdr(ndo, cp)) == NULL)
return;
cp += 4; /* ctime */
ND_TCHECK(*cp);
ND_PRINT((ndo, " %dmin ", *cp++ * 5));
PRINT;
ND_PRINT((ndo, "."));
PRINT;
break;
case AUTH_MSG_APPL_REQUEST:
cp += 2;
ND_TCHECK(*cp);
ND_PRINT((ndo, "v%d ", *cp++));
PRINT;
ND_TCHECK(*cp);
ND_PRINT((ndo, " (%d)", *cp++));
ND_TCHECK(*cp);
ND_PRINT((ndo, " (%d)", *cp));
break;
case AUTH_MSG_KDC_REPLY:
if ((cp = krb4_print_hdr(ndo, cp)) == NULL)
return;
cp += 10; /* timestamp + n + exp + kvno */
ND_TCHECK2(*cp, sizeof(short));
len = KTOHSP(kp, cp);
ND_PRINT((ndo, " (%d)", len));
break;
case AUTH_MSG_ERR_REPLY:
if ((cp = krb4_print_hdr(ndo, cp)) == NULL)
return;
cp += 4; /* timestamp */
ND_TCHECK2(*cp, sizeof(short));
ND_PRINT((ndo, " %s ", tok2str(kerr2str, NULL, KTOHSP(kp, cp))));
cp += 4;
PRINT;
break;
default:
ND_PRINT((ndo, "(unknown)"));
break;
}
return;
trunc:
ND_PRINT((ndo, "%s", tstr));
}
void
krb4_print(const u_char *cp)
{
register const struct krb *kp;
u_char type;
u_short len;
#define PRINT if ((cp = c_print(cp, snapend)) == NULL) goto trunc
/* True if struct krb is little endian */
#define IS_LENDIAN(kp) (((kp)->type & 0x01) != 0)
#define KTOHSP(kp, cp) (IS_LENDIAN(kp) ? vtohsp(cp) : ntohsp(cp))
kp = (struct krb *)cp;
if ((&kp->type) >= snapend) {
fputs(tstr, stdout);
return;
}
type = kp->type & (0xFF << 1);
printf(" %s %s: ",
IS_LENDIAN(kp) ? "le" : "be", tok2str(type2str, NULL, type));
switch (type) {
case AUTH_MSG_KDC_REQUEST:
if ((cp = krb4_print_hdr(cp)) == NULL)
return;
cp += 4; /* ctime */
TCHECK2(cp, 0);
printf(" %dmin ", *cp++ * 5);
TCHECK2(cp, 0);
PRINT;
TCHECK2(cp, 0);
putchar('.'); PRINT;
break;
case AUTH_MSG_APPL_REQUEST:
cp += 2;
TCHECK2(cp, 0);
printf("v%d ", *cp++);
TCHECK2(cp, 0);
PRINT;
TCHECK2(cp, 0);
printf(" (%d)", *cp++);
TCHECK2(cp, 0);
printf(" (%d)", *cp);
TCHECK2(cp, 0);
break;
case AUTH_MSG_KDC_REPLY:
if ((cp = krb4_print_hdr(cp)) == NULL)
return;
cp += 10; /* timestamp + n + exp + kvno */
TCHECK2(cp, 0);
len = KTOHSP(kp, cp);
printf(" (%d)", len);
TCHECK2(cp, 0);
break;
case AUTH_MSG_ERR_REPLY:
if ((cp = krb4_print_hdr(cp)) == NULL)
return;
cp += 4; /* timestamp */
TCHECK2(cp, 0);
printf(" %s ", tok2str(kerr2str, NULL, KTOHSP(kp, cp)));
cp += 4;
TCHECK2(cp, 0);
PRINT;
break;
default:
fputs("(unknown)", stdout);
break;
}
return;
trunc:
fputs(tstr, stdout);
}
static void
krb4_print(packetbody_t cp)
{
__capability const struct krb *kp;
u_char type;
u_short len;
#define PRINT if ((cp = c_print(cp, snapend)) == NULL) goto trunc
/* True if struct krb is little endian */
#define IS_LENDIAN(kp) (((kp)->type & 0x01) != 0)
#define KTOHSP(kp, cp) (IS_LENDIAN(kp) ? EXTRACT_LE_16BITS(cp) : EXTRACT_16BITS(cp))
kp = (__capability const struct krb *)cp;
if (!PACKET_HAS_ELEMENT(kp, type)) {
fputs(tstr, stdout);
return;
}
type = kp->type & (0xFF << 1);
printf(" %s %s: ",
IS_LENDIAN(kp) ? "le" : "be", tok2str(type2str, NULL, type));
switch (type) {
case AUTH_MSG_KDC_REQUEST:
if ((cp = krb4_print_hdr(cp)) == NULL)
return;
cp += 4; /* ctime */
PACKET_HAS_ONE_OR_TRUNC(cp);
printf(" %dmin ", *cp++ * 5);
PRINT;
putchar('.');
PRINT;
break;
case AUTH_MSG_APPL_REQUEST:
cp += 2;
PACKET_HAS_ONE_OR_TRUNC(cp);
printf("v%d ", *cp++);
PRINT;
PACKET_HAS_ONE_OR_TRUNC(cp);
printf(" (%d)", *cp++);
PACKET_HAS_ONE_OR_TRUNC(cp);
printf(" (%d)", *cp);
break;
case AUTH_MSG_KDC_REPLY:
if ((cp = krb4_print_hdr(cp)) == NULL)
return;
cp += 10; /* timestamp + n + exp + kvno */
PACKET_HAS_SPACE_OR_TRUNC(cp, sizeof(short));
len = KTOHSP(kp, cp);
printf(" (%d)", len);
break;
case AUTH_MSG_ERR_REPLY:
if ((cp = krb4_print_hdr(cp)) == NULL)
return;
cp += 4; /* timestamp */
PACKET_HAS_SPACE_OR_TRUNC(cp, sizeof(short));
printf(" %s ", tok2str(kerr2str, NULL, KTOHSP(kp, cp)));
cp += 4;
PRINT;
break;
default:
fputs("(unknown)", stdout);
break;
}
return;
trunc:
fputs(tstr, stdout);
}
