* SUCH DAMAGE.
*/
+/* \summary: IPv6 header option printer */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#ifdef INET6
-#include <tcpdump-stdinc.h>
-
-#include <stdio.h>
+#include <netdissect-stdinc.h>
-#include "ip6.h"
-
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
-/* items outside of rfc2292bis */
-#ifndef IP6OPT_MINLEN
-#define IP6OPT_MINLEN 2
-#endif
-#ifndef IP6OPT_RTALERT_LEN
-#define IP6OPT_RTALERT_LEN 4
-#endif
-#ifndef IP6OPT_JUMBO_LEN
-#define IP6OPT_JUMBO_LEN 6
-#endif
-#define IP6OPT_HOMEADDR_MINLEN 18
-#define IP6OPT_BU_MINLEN 10
-#define IP6OPT_BA_MINLEN 13
-#define IP6OPT_BR_MINLEN 2
-#define IP6SOPT_UI 0x2
-#define IP6SOPT_UI_MINLEN 4
-#define IP6SOPT_ALTCOA 0x3
-#define IP6SOPT_ALTCOA_MINLEN 18
-#define IP6SOPT_AUTH 0x4
-#define IP6SOPT_AUTH_MINLEN 6
-
-static void ip6_sopt_print(const u_char *, int);
+#include "ip6.h"
static void
-ip6_sopt_print(const u_char *bp, int len)
+ip6_sopt_print(netdissect_options *ndo, const u_char *bp, int len)
{
int i;
int optlen;
switch (bp[i]) {
case IP6OPT_PAD1:
- printf(", pad1");
+ ND_PRINT((ndo, ", pad1"));
break;
case IP6OPT_PADN:
if (len - i < IP6OPT_MINLEN) {
- printf(", padn: trunc");
- goto trunc;
- }
- printf(", padn");
- break;
- case IP6SOPT_UI:
- if (len - i < IP6SOPT_UI_MINLEN) {
- printf(", ui: trunc");
- goto trunc;
- }
- printf(", ui: 0x%04x ", EXTRACT_16BITS(&bp[i + 2]));
- break;
- case IP6SOPT_ALTCOA:
- if (len - i < IP6SOPT_ALTCOA_MINLEN) {
- printf(", altcoa: trunc");
+ ND_PRINT((ndo, ", padn: trunc"));
goto trunc;
}
- printf(", alt-CoA: %s", ip6addr_string(&bp[i+2]));
- break;
- case IP6SOPT_AUTH:
- if (len - i < IP6SOPT_AUTH_MINLEN) {
- printf(", auth: trunc");
- goto trunc;
- }
- printf(", auth spi: 0x%08x", EXTRACT_32BITS(&bp[i + 2]));
+ ND_PRINT((ndo, ", padn"));
break;
default:
if (len - i < IP6OPT_MINLEN) {
- printf(", sopt_type %d: trunc)", bp[i]);
+ ND_PRINT((ndo, ", sopt_type %d: trunc)", EXTRACT_U_1(bp + i)));
goto trunc;
}
- printf(", sopt_type 0x%02x: len=%d", bp[i], bp[i + 1]);
+ ND_PRINT((ndo, ", sopt_type 0x%02x: len=%d", EXTRACT_U_1(bp + i), EXTRACT_U_1(bp + i + 1)));
break;
}
}
return;
trunc:
- printf("[trunc] ");
+ ND_PRINT((ndo, "[trunc] "));
}
-void
-ip6_opt_print(const u_char *bp, int len)
+static void
+ip6_opt_print(netdissect_options *ndo, const u_char *bp, int len)
{
int i;
int optlen = 0;
switch (bp[i]) {
case IP6OPT_PAD1:
- printf("(pad1)");
+ ND_PRINT((ndo, "(pad1)"));
break;
case IP6OPT_PADN:
if (len - i < IP6OPT_MINLEN) {
- printf("(padn: trunc)");
+ ND_PRINT((ndo, "(padn: trunc)"));
goto trunc;
}
- printf("(padn)");
+ ND_PRINT((ndo, "(padn)"));
break;
case IP6OPT_ROUTER_ALERT:
if (len - i < IP6OPT_RTALERT_LEN) {
- printf("(rtalert: trunc)");
+ ND_PRINT((ndo, "(rtalert: trunc)"));
goto trunc;
}
if (bp[i + 1] != IP6OPT_RTALERT_LEN - 2) {
- printf("(rtalert: invalid len %d)", bp[i + 1]);
+ ND_PRINT((ndo, "(rtalert: invalid len %d)", EXTRACT_U_1(bp + i + 1)));
goto trunc;
}
- printf("(rtalert: 0x%04x) ", EXTRACT_16BITS(&bp[i + 2]));
+ ND_PRINT((ndo, "(rtalert: 0x%04x) ", EXTRACT_BE_U_2(bp + i + 2)));
break;
case IP6OPT_JUMBO:
if (len - i < IP6OPT_JUMBO_LEN) {
- printf("(jumbo: trunc)");
+ ND_PRINT((ndo, "(jumbo: trunc)"));
goto trunc;
}
if (bp[i + 1] != IP6OPT_JUMBO_LEN - 2) {
- printf("(jumbo: invalid len %d)", bp[i + 1]);
+ ND_PRINT((ndo, "(jumbo: invalid len %d)", EXTRACT_U_1(bp + i + 1)));
goto trunc;
}
- printf("(jumbo: %u) ", EXTRACT_32BITS(&bp[i + 2]));
+ ND_PRINT((ndo, "(jumbo: %u) ", EXTRACT_BE_U_4(bp + i + 2)));
break;
case IP6OPT_HOME_ADDRESS:
if (len - i < IP6OPT_HOMEADDR_MINLEN) {
- printf("(homeaddr: trunc)");
+ ND_PRINT((ndo, "(homeaddr: trunc)"));
goto trunc;
}
if (bp[i + 1] < IP6OPT_HOMEADDR_MINLEN - 2) {
- printf("(homeaddr: invalid len %d)", bp[i + 1]);
+ ND_PRINT((ndo, "(homeaddr: invalid len %d)", EXTRACT_U_1(bp + i + 1)));
goto trunc;
}
- printf("(homeaddr: %s", ip6addr_string(&bp[i + 2]));
+ ND_PRINT((ndo, "(homeaddr: %s", ip6addr_string(ndo, bp + i + 2)));
if (bp[i + 1] > IP6OPT_HOMEADDR_MINLEN - 2) {
- ip6_sopt_print(&bp[i + IP6OPT_HOMEADDR_MINLEN],
+ ip6_sopt_print(ndo, &bp[i + IP6OPT_HOMEADDR_MINLEN],
(optlen - IP6OPT_HOMEADDR_MINLEN));
}
- printf(")");
- break;
- case IP6OPT_BINDING_UPDATE:
- if (len - i < IP6OPT_BU_MINLEN) {
- printf("(bu: trunc)");
- goto trunc;
- }
- if (bp[i + 1] < IP6OPT_BU_MINLEN - 2) {
- printf("(bu: invalid len %d)", bp[i + 1]);
- goto trunc;
- }
- printf("(bu: ");
- if (bp[i + 2] & 0x80)
- printf("A");
- if (bp[i + 2] & 0x40)
- printf("H");
- if (bp[i + 2] & 0x20)
- printf("S");
- if (bp[i + 2] & 0x10)
- printf("D");
- if ((bp[i + 2] & 0x0f) || bp[i + 3] || bp[i + 4])
- printf("res");
- printf(", sequence: %u", bp[i + 5]);
- printf(", lifetime: %u", EXTRACT_32BITS(&bp[i + 6]));
-
- if (bp[i + 1] > IP6OPT_BU_MINLEN - 2) {
- ip6_sopt_print(&bp[i + IP6OPT_BU_MINLEN],
- (optlen - IP6OPT_BU_MINLEN));
- }
- printf(")");
- break;
- case IP6OPT_BINDING_ACK:
- if (len - i < IP6OPT_BA_MINLEN) {
- printf("(ba: trunc)");
- goto trunc;
- }
- if (bp[i + 1] < IP6OPT_BA_MINLEN - 2) {
- printf("(ba: invalid len %d)", bp[i + 1]);
- goto trunc;
- }
- printf("(ba: ");
- printf("status: %u", bp[i + 2]);
- if (bp[i + 3])
- printf("res");
- printf(", sequence: %u", bp[i + 4]);
- printf(", lifetime: %u", EXTRACT_32BITS(&bp[i + 5]));
- printf(", refresh: %u", EXTRACT_32BITS(&bp[i + 9]));
-
- if (bp[i + 1] > IP6OPT_BA_MINLEN - 2) {
- ip6_sopt_print(&bp[i + IP6OPT_BA_MINLEN],
- (optlen - IP6OPT_BA_MINLEN));
- }
- printf(")");
- break;
- case IP6OPT_BINDING_REQ:
- if (len - i < IP6OPT_BR_MINLEN) {
- printf("(br: trunc)");
- goto trunc;
- }
- printf("(br");
- if (bp[i + 1] > IP6OPT_BR_MINLEN - 2) {
- ip6_sopt_print(&bp[i + IP6OPT_BR_MINLEN],
- (optlen - IP6OPT_BR_MINLEN));
- }
- printf(")");
+ ND_PRINT((ndo, ")"));
break;
default:
if (len - i < IP6OPT_MINLEN) {
- printf("(type %d: trunc)", bp[i]);
+ ND_PRINT((ndo, "(type %d: trunc)", EXTRACT_U_1(bp + i)));
goto trunc;
}
- printf("(opt_type 0x%02x: len=%d)", bp[i], bp[i + 1]);
+ ND_PRINT((ndo, "(opt_type 0x%02x: len=%d)", EXTRACT_U_1(bp + i), EXTRACT_U_1(bp + i + 1)));
break;
}
}
- printf(" ");
-
-#if 0
-end:
-#endif
+ ND_PRINT((ndo, " "));
return;
trunc:
- printf("[trunc] ");
+ ND_PRINT((ndo, "[trunc] "));
}
int
-hbhopt_print(register const u_char *bp)
+hbhopt_print(netdissect_options *ndo, register const u_char *bp)
{
- const struct ip6_hbh *dp = (struct ip6_hbh *)bp;
- int hbhlen = 0;
+ const struct ip6_hbh *dp = (const struct ip6_hbh *)bp;
+ u_int hbhlen = 0;
- TCHECK(dp->ip6h_len);
- hbhlen = (int)((dp->ip6h_len + 1) << 3);
- TCHECK2(*dp, hbhlen);
- printf("HBH ");
- if (vflag)
- ip6_opt_print((const u_char *)dp + sizeof(*dp), hbhlen - sizeof(*dp));
+ ND_TCHECK(dp->ip6h_len);
+ hbhlen = (dp->ip6h_len + 1) << 3;
+ ND_TCHECK2(*dp, hbhlen);
+ ND_PRINT((ndo, "HBH "));
+ if (ndo->ndo_vflag)
+ ip6_opt_print(ndo, (const u_char *)dp + sizeof(*dp), hbhlen - sizeof(*dp));
return(hbhlen);
trunc:
- fputs("[|HBH]", stdout);
+ ND_PRINT((ndo, "[|HBH]"));
return(-1);
}
int
-dstopt_print(register const u_char *bp)
+dstopt_print(netdissect_options *ndo, register const u_char *bp)
{
- const struct ip6_dest *dp = (struct ip6_dest *)bp;
- int dstoptlen = 0;
-
- TCHECK(dp->ip6d_len);
- dstoptlen = (int)((dp->ip6d_len + 1) << 3);
- TCHECK2(*dp, dstoptlen);
- printf("DSTOPT ");
- if (vflag) {
- ip6_opt_print((const u_char *)dp + sizeof(*dp),
+ const struct ip6_dest *dp = (const struct ip6_dest *)bp;
+ u_int dstoptlen = 0;
+
+ ND_TCHECK(dp->ip6d_len);
+ dstoptlen = (dp->ip6d_len + 1) << 3;
+ ND_TCHECK2(*dp, dstoptlen);
+ ND_PRINT((ndo, "DSTOPT "));
+ if (ndo->ndo_vflag) {
+ ip6_opt_print(ndo, (const u_char *)dp + sizeof(*dp),
dstoptlen - sizeof(*dp));
}
return(dstoptlen);
trunc:
- fputs("[|DSTOPT]", stdout);
+ ND_PRINT((ndo, "[|DSTOPT]"));
return(-1);
}
-#endif /* INET6 */
projects / tcpdump / blobdiff