* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: Message Transfer Part 3 (MTP3) User Adaptation Layer (M3UA) printer */
-#include <tcpdump-stdinc.h>
-#include "m3ua.h"
+/* RFC 4666 */
-#include "interface.h"
-#include "addrtoname.h"
+#include <config.h>
+
+#include "netdissect-stdinc.h"
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "extract.h"
+
+#define M3UA_REL_1_0 1
+
+struct m3ua_common_header {
+ nd_uint8_t v;
+ nd_uint8_t reserved;
+ nd_uint8_t msg_class;
+ nd_uint8_t msg_type;
+ nd_uint32_t len;
+};
+
+struct m3ua_param_header {
+ nd_uint16_t tag;
+ nd_uint16_t len;
+};
+
+/* message classes */
+#define M3UA_MSGC_MGMT 0
+#define M3UA_MSGC_TRANSFER 1
+#define M3UA_MSGC_SSNM 2
+#define M3UA_MSGC_ASPSM 3
+#define M3UA_MSGC_ASPTM 4
+/* reserved values */
+#define M3UA_MSGC_RKM 9
+
+static const struct tok MessageClasses[] = {
+ { M3UA_MSGC_MGMT, "Management" },
+ { M3UA_MSGC_TRANSFER, "Transfer" },
+ { M3UA_MSGC_SSNM, "SS7" },
+ { M3UA_MSGC_ASPSM, "ASP" },
+ { M3UA_MSGC_ASPTM, "ASP" },
+ { M3UA_MSGC_RKM, "Routing Key Management"},
+ { 0, NULL }
+};
+
+/* management messages */
+#define M3UA_MGMT_ERROR 0
+#define M3UA_MGMT_NOTIFY 1
+
static const struct tok MgmtMessages[] = {
{ M3UA_MGMT_ERROR, "Error" },
{ M3UA_MGMT_NOTIFY, "Notify" },
{ 0, NULL }
};
+/* transfer messages */
+#define M3UA_TRANSFER_DATA 1
+
static const struct tok TransferMessages[] = {
{ M3UA_TRANSFER_DATA, "Data" },
{ 0, NULL }
};
+/* SS7 Signaling Network Management messages */
+#define M3UA_SSNM_DUNA 1
+#define M3UA_SSNM_DAVA 2
+#define M3UA_SSNM_DAUD 3
+#define M3UA_SSNM_SCON 4
+#define M3UA_SSNM_DUPU 5
+#define M3UA_SSNM_DRST 6
+
static const struct tok SS7Messages[] = {
{ M3UA_SSNM_DUNA, "Destination Unavailable" },
{ M3UA_SSNM_DAVA, "Destination Available" },
{ 0, NULL }
};
+/* ASP State Maintenance messages */
+#define M3UA_ASP_UP 1
+#define M3UA_ASP_DN 2
+#define M3UA_ASP_BEAT 3
+#define M3UA_ASP_UP_ACK 4
+#define M3UA_ASP_DN_ACK 5
+#define M3UA_ASP_BEAT_ACK 6
+
static const struct tok ASPStateMessages[] = {
{ M3UA_ASP_UP, "Up" },
{ M3UA_ASP_DN, "Down" },
{ 0, NULL }
};
+/* ASP Traffic Maintenance messages */
+#define M3UA_ASP_AC 1
+#define M3UA_ASP_IA 2
+#define M3UA_ASP_AC_ACK 3
+#define M3UA_ASP_IA_ACK 4
+
static const struct tok ASPTrafficMessages[] = {
{ M3UA_ASP_AC, "Active" },
{ M3UA_ASP_IA, "Inactive" },
{ 0, NULL }
};
+/* Routing Key Management messages */
+#define M3UA_RKM_REQ 1
+#define M3UA_RKM_RSP 2
+#define M3UA_RKM_DEREQ 3
+#define M3UA_RKM_DERSP 4
+
static const struct tok RoutingKeyMgmtMessages[] = {
{ M3UA_RKM_REQ, "Registration Request" },
{ M3UA_RKM_RSP, "Registration Response" },
{ 0, NULL }
};
+static const struct uint_tokary m3ua_msgc2tokary[] = {
+ { M3UA_MSGC_MGMT, MgmtMessages },
+ { M3UA_MSGC_TRANSFER, TransferMessages },
+ { M3UA_MSGC_SSNM, SS7Messages },
+ { M3UA_MSGC_ASPSM, ASPStateMessages },
+ { M3UA_MSGC_ASPTM, ASPTrafficMessages },
+ { M3UA_MSGC_RKM, RoutingKeyMgmtMessages },
+ /* uint2tokary() does not use array termination. */
+};
+
+/* M3UA Parameters */
+#define M3UA_PARAM_INFO 0x0004
+#define M3UA_PARAM_ROUTING_CTX 0x0006
+#define M3UA_PARAM_DIAGNOSTIC 0x0007
+#define M3UA_PARAM_HB_DATA 0x0009
+#define M3UA_PARAM_TRAFFIC_MODE_TYPE 0x000b
+#define M3UA_PARAM_ERROR_CODE 0x000c
+#define M3UA_PARAM_STATUS 0x000d
+#define M3UA_PARAM_ASP_ID 0x0011
+#define M3UA_PARAM_AFFECTED_POINT_CODE 0x0012
+#define M3UA_PARAM_CORR_ID 0x0013
+
+#define M3UA_PARAM_NETWORK_APPEARANCE 0x0200
+#define M3UA_PARAM_USER 0x0204
+#define M3UA_PARAM_CONGESTION_INDICATION 0x0205
+#define M3UA_PARAM_CONCERNED_DST 0x0206
+#define M3UA_PARAM_ROUTING_KEY 0x0207
+#define M3UA_PARAM_REG_RESULT 0x0208
+#define M3UA_PARAM_DEREG_RESULT 0x0209
+#define M3UA_PARAM_LOCAL_ROUTING_KEY_ID 0x020a
+#define M3UA_PARAM_DST_POINT_CODE 0x020b
+#define M3UA_PARAM_SI 0x020c
+#define M3UA_PARAM_ORIGIN_POINT_CODE_LIST 0x020e
+#define M3UA_PARAM_PROTO_DATA 0x0210
+#define M3UA_PARAM_REG_STATUS 0x0212
+#define M3UA_PARAM_DEREG_STATUS 0x0213
+
static const struct tok ParamName[] = {
{ M3UA_PARAM_INFO, "INFO String" },
{ M3UA_PARAM_ROUTING_CTX, "Routing Context" },
{ 0, NULL }
};
-static void print_tag_value(const u_char *buf, u_int16_t tag, u_int16_t size)
+static void
+tag_value_print(netdissect_options *ndo,
+ const u_char *buf, const uint16_t tag, const uint16_t size)
{
switch (tag) {
case M3UA_PARAM_NETWORK_APPEARANCE:
case M3UA_PARAM_ROUTING_CTX:
case M3UA_PARAM_CORR_ID:
- printf("0x%08x", EXTRACT_32BITS(buf));
+ /* buf and size don't include the header */
+ if (size < 4)
+ goto invalid;
+ ND_PRINT("0x%08x", GET_BE_U_4(buf));
break;
/* ... */
default:
- printf("(length %u)", size);
+ ND_PRINT("(length %zu)", size + sizeof(struct m3ua_param_header));
}
+ ND_TCHECK_LEN(buf, size);
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(buf, size);
}
-static void print_m3ua_tags(const u_char *buf, u_int size)
+/*
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Tag | Parameter Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * \ \
+ * / Parameter Value /
+ * \ \
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+static void
+m3ua_tags_print(netdissect_options *ndo,
+ const u_char *buf, const u_int size)
{
const u_char *p = buf;
+ int align;
+ uint16_t hdr_tag;
+ uint16_t hdr_len;
+
while (p < buf + size) {
- const struct m3ua_param_header *hdr = (const struct m3ua_param_header *) p;
- printf("\n\t\t\t%s: ", tok2str(ParamName, "Unknown Parameter (0x%04x)", EXTRACT_16BITS(&hdr->tag)));
- print_tag_value(p + sizeof(struct m3ua_param_header), EXTRACT_16BITS(&hdr->tag), EXTRACT_16BITS(&hdr->len));
- p += EXTRACT_16BITS(&hdr->len);
- int align = (int) (p - buf) % 4;
- p += (align) ? 4 - align : 0;
+ if (p + sizeof(struct m3ua_param_header) > buf + size)
+ goto invalid;
+ /* Parameter Tag */
+ hdr_tag = GET_BE_U_2(p);
+ ND_PRINT("\n\t\t\t%s: ", tok2str(ParamName, "Unknown Parameter (0x%04x)", hdr_tag));
+ /* Parameter Length */
+ hdr_len = GET_BE_U_2(p + 2);
+ if (hdr_len < sizeof(struct m3ua_param_header))
+ goto invalid;
+ /* Parameter Value */
+ align = (p + hdr_len - buf) % 4;
+ align = align ? 4 - align : 0;
+ ND_TCHECK_LEN(p, hdr_len + align);
+ tag_value_print(ndo, p, hdr_tag, hdr_len - sizeof(struct m3ua_param_header));
+ p += hdr_len + align;
}
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(buf, size);
}
-void print_m3ua(const u_char *buf, u_int size)
+/*
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Version | Reserved | Message Class | Message Type |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Message Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * \ \
+ * / /
+ */
+void
+m3ua_print(netdissect_options *ndo,
+ const u_char *buf, const u_int size)
{
const struct m3ua_common_header *hdr = (const struct m3ua_common_header *) buf;
+ const struct tok *dict;
+ uint8_t msg_class;
- printf("\n\t\t");
- switch (hdr->msg_class) {
- case M3UA_MSGC_MGMT:
- printf("Management %s Message", tok2str(MgmtMessages, "Unknown (0x%02x)", hdr->msg_type));
- break;
- case M3UA_MSGC_TRANSFER:
- printf("Transfer %s Message", tok2str(TransferMessages, "Unknown (0x%02x)", hdr->msg_type));
- break;
- case M3UA_MSGC_SSNM:
- printf("SS7 %s Message", tok2str(SS7Messages, "Unknown (0x%02x)", hdr->msg_type));
- break;
- case M3UA_MSGC_ASPSM:
- printf("ASP %s Message", tok2str(ASPStateMessages, "Unknown (0x%02x)", hdr->msg_type));
- break;
- case M3UA_MSGC_ASPTM:
- printf("ASP %s Message", tok2str(ASPTrafficMessages, "Unknown (0x%02x)", hdr->msg_type));
- break;
- case M3UA_MSGC_RKM:
- printf("Routing Key Managment %s Message",
- tok2str(RoutingKeyMgmtMessages, "Unknown (0x%02x)", hdr->msg_type));
- break;
- default:
- printf("Unknown message class %i", hdr->msg_class);
- break;
- };
+ ndo->ndo_protocol = "m3ua";
+ /* size includes the header */
+ if (size < sizeof(struct m3ua_common_header))
+ goto invalid;
+ ND_TCHECK_SIZE(hdr);
+ if (GET_U_1(hdr->v) != M3UA_REL_1_0)
+ return;
- fflush(stdout);
+ msg_class = GET_U_1(hdr->msg_class);
+ dict = uint2tokary(m3ua_msgc2tokary, msg_class);
- if (size != EXTRACT_32BITS(&hdr->len))
- printf("\n\t\t\t@@@@@@ Corrupted length %u of message @@@@@@", EXTRACT_32BITS(&hdr->len));
+ ND_PRINT("\n\t\t%s", tok2str(MessageClasses, "Unknown message class %i", msg_class));
+ if (dict != NULL)
+ ND_PRINT(" %s Message",
+ tok2str(dict, "Unknown (0x%02x)", GET_U_1(hdr->msg_type)));
+
+ if (size != GET_BE_U_4(hdr->len))
+ ND_PRINT("\n\t\t\t@@@@@@ Corrupted length %u of message @@@@@@",
+ GET_BE_U_4(hdr->len));
else
- print_m3ua_tags(buf + sizeof(struct m3ua_common_header), EXTRACT_32BITS(&hdr->len) - sizeof(struct m3ua_common_header));
+ m3ua_tags_print(ndo, buf + sizeof(struct m3ua_common_header),
+ GET_BE_U_4(hdr->len) - sizeof(struct m3ua_common_header));
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(buf, size);
}
projects / tcpdump / blobdiff