#include <config.h>
#endif
-#include <string.h>
-
#include "netdissect-stdinc.h"
+#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
#define egp_sourcenet egp_pands.egpu_sourcenet
};
-static const char *egp_acquire_codes[] = {
- "request",
- "confirm",
- "refuse",
- "cease",
- "cease_ack"
+static const struct tok egp_type_str[] = {
+ { EGPT_ACQUIRE, "acquire" },
+ { EGPT_REACH, "reach" },
+ { EGPT_POLL, "poll" },
+ { EGPT_UPDATE, "update" },
+ { EGPT_ERROR, "error" },
+ { 0, NULL }
+};
+
+static const struct tok egp_acquire_codes_str[] = {
+ { EGPC_REQUEST, "request" },
+ { EGPC_CONFIRM, "confirm" },
+ { EGPC_REFUSE, "refuse" },
+ { EGPC_CEASE, "cease" },
+ { EGPC_CEASEACK, "cease_ack" },
+ { 0, NULL }
};
-static const char *egp_acquire_status[] = {
- "unspecified",
- "active_mode",
- "passive_mode",
- "insufficient_resources",
- "administratively_prohibited",
- "going_down",
- "parameter_violation",
- "protocol_violation"
+static const struct tok egp_acquire_status_str[] = {
+ { EGPS_UNSPEC, "unspecified" },
+ { EGPS_ACTIVE, "active_mode" },
+ { EGPS_PASSIVE, "passive_mode" },
+ { EGPS_NORES, "insufficient_resources" },
+ { EGPS_ADMIN, "administratively_prohibited" },
+ { EGPS_GODOWN, "going_down" },
+ { EGPS_PARAM, "parameter_violation" },
+ { EGPS_PROTO, "protocol_violation" },
+ { 0, NULL }
};
-static const char *egp_reach_codes[] = {
- "hello",
- "i-h-u"
+static const struct tok egp_reach_codes_str[] = {
+ { EGPC_HELLO, "hello" },
+ { EGPC_HEARDU, "i-h-u" },
+ { 0, NULL }
};
-static const char *egp_status_updown[] = {
- "indeterminate",
- "up",
- "down"
+static const struct tok egp_status_updown_str[] = {
+ { EGPS_INDET, "indeterminate" },
+ { EGPS_UP, "up" },
+ { EGPS_DOWN, "down" },
+ { 0, NULL }
};
-static const char *egp_reasons[] = {
- "unspecified",
- "bad_EGP_header_format",
- "bad_EGP_data_field_format",
- "reachability_info_unavailable",
- "excessive_polling_rate",
- "no_response",
- "unsupported_version"
+static const struct tok egp_reasons_str[] = {
+ { EGPR_UNSPEC, "unspecified" },
+ { EGPR_BADHEAD, "bad_EGP_header_format" },
+ { EGPR_BADDATA, "bad_EGP_data_field_format" },
+ { EGPR_NOREACH, "reachability_info_unavailable" },
+ { EGPR_XSPOLL, "excessive_polling_rate" },
+ { EGPR_NORESP, "no_response" },
+ { EGPR_UVERSION, "unsupported_version" },
+ { 0, NULL }
};
static void
/* Pickup host part of gateway address */
addr = 0;
if (length < 4 - netlen)
- goto trunc;
+ goto invalid;
ND_TCHECK_LEN(cp, 4 - netlen);
switch (netlen) {
addr |= net;
length -= 4 - netlen;
if (length < 1)
- goto trunc;
- ND_TCHECK_1(cp);
+ goto invalid;
distances = GET_U_1(cp);
cp++;
length--;
ND_PRINT(" %s %s ",
gateways < intgw ? "int" : "ext",
- ipaddr_string(ndo, (const u_char *)&addr));
+ ipaddr_string(ndo, (const u_char *)&addr)); /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
comma = "";
ND_PRINT("(");
while (distances != 0) {
if (length < 2)
- goto trunc;
- ND_TCHECK_2(cp);
+ goto invalid;
ND_PRINT("%sd%u:", comma, GET_U_1(cp));
cp++;
comma = ", ";
while (networks != 0) {
/* Pickup network number */
if (length < 1)
- goto trunc;
- ND_TCHECK_1(cp);
+ goto invalid;
addr = ((uint32_t) GET_U_1(cp)) << 24;
cp++;
length--;
if (IN_CLASSB(addr)) {
if (length < 1)
- goto trunc;
- ND_TCHECK_1(cp);
+ goto invalid;
addr |= ((uint32_t) GET_U_1(cp)) << 16;
cp++;
length--;
} else if (!IN_CLASSA(addr)) {
if (length < 2)
- goto trunc;
- ND_TCHECK_2(cp);
+ goto invalid;
addr |= ((uint32_t) GET_U_1(cp)) << 16;
cp++;
addr |= ((uint32_t) GET_U_1(cp)) << 8;
cp++;
length -= 2;
}
- ND_PRINT(" %s", ipaddr_string(ndo, (const u_char *)&addr));
+ ND_PRINT(" %s", ipaddr_string(ndo, (const u_char *)&addr)); /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
networks--;
}
distances--;
ND_PRINT(")");
}
return;
-trunc:
- nd_print_trunc(ndo);
+invalid:
+ nd_print_invalid(ndo);
}
void
ndo->ndo_protocol = "egp";
egp = (const struct egp_packet *)bp;
- if (length < sizeof(*egp) || !ND_TTEST_SIZE(egp)) {
- nd_print_trunc(ndo);
- return;
- }
+ ND_ICHECKMSG_ZU("packet length", length, <, sizeof(*egp));
+ ND_TCHECK_SIZE(egp);
version = GET_U_1(egp->egp_version);
if (!ndo->ndo_vflag) {
}
type = GET_U_1(egp->egp_type);
+ ND_PRINT(" %s", tok2str(egp_type_str, "[type %u]", type));
code = GET_U_1(egp->egp_code);
status = GET_U_1(egp->egp_status);
switch (type) {
case EGPT_ACQUIRE:
- ND_PRINT(" acquire");
+ ND_PRINT(" %s", tok2str(egp_acquire_codes_str, "[code %u]", code));
switch (code) {
case EGPC_REQUEST:
case EGPC_CONFIRM:
- ND_PRINT(" %s", egp_acquire_codes[code]);
switch (status) {
case EGPS_UNSPEC:
case EGPS_ACTIVE:
case EGPS_PASSIVE:
- ND_PRINT(" %s", egp_acquire_status[status]);
+ ND_PRINT(" %s", tok2str(egp_acquire_status_str, "%u", status));
break;
default:
case EGPC_REFUSE:
case EGPC_CEASE:
case EGPC_CEASEACK:
- ND_PRINT(" %s", egp_acquire_codes[code]);
switch (status ) {
case EGPS_UNSPEC:
case EGPS_NORES:
case EGPS_GODOWN:
case EGPS_PARAM:
case EGPS_PROTO:
- ND_PRINT(" %s", egp_acquire_status[status]);
+ ND_PRINT(" %s", tok2str(egp_acquire_status_str, "%u", status));
break;
default:
break;
}
break;
-
- default:
- ND_PRINT("[code %u]", code);
- break;
}
break;
case EGPT_REACH:
+ ND_PRINT(" %s", tok2str(egp_reach_codes_str, "[reach code %u]", code));
switch (code) {
-
case EGPC_HELLO:
case EGPC_HEARDU:
- ND_PRINT(" %s", egp_reach_codes[code]);
- if (status <= EGPS_DOWN)
- ND_PRINT(" state:%s", egp_status_updown[status]);
- else
- ND_PRINT(" [status %u]", status);
- break;
-
- default:
- ND_PRINT("[reach code %u]", code);
+ ND_PRINT(" state:%s", tok2str(egp_status_updown_str, "%u", status));
break;
}
break;
case EGPT_POLL:
- ND_PRINT(" poll");
- if (status <= EGPS_DOWN)
- ND_PRINT(" state:%s", egp_status_updown[status]);
- else
- ND_PRINT(" [status %u]", status);
+ ND_PRINT(" state:%s", tok2str(egp_status_updown_str, "%u", status));
ND_PRINT(" net:%s", GET_IPADDR_STRING(egp->egp_sourcenet));
break;
case EGPT_UPDATE:
- ND_PRINT(" update");
if (status & EGPS_UNSOL) {
status &= ~EGPS_UNSOL;
ND_PRINT(" unsolicited");
}
- if (status <= EGPS_DOWN)
- ND_PRINT(" state:%s", egp_status_updown[status]);
- else
- ND_PRINT(" [status %u]", status);
+ ND_PRINT(" state:%s", tok2str(egp_status_updown_str, "%u", status));
ND_PRINT(" %s int %u ext %u",
GET_IPADDR_STRING(egp->egp_sourcenet),
GET_U_1(egp->egp_intgw),
break;
case EGPT_ERROR:
- ND_PRINT(" error");
- if (status <= EGPS_DOWN)
- ND_PRINT(" state:%s", egp_status_updown[status]);
- else
- ND_PRINT(" [status %u]", status);
-
- if (GET_BE_U_2(egp->egp_reason) <= EGPR_UVERSION)
- ND_PRINT(" %s",
- egp_reasons[GET_BE_U_2(egp->egp_reason)]);
- else
- ND_PRINT(" [reason %u]", GET_BE_U_2(egp->egp_reason));
- break;
-
- default:
- ND_PRINT("[type %u]", type);
+ ND_PRINT(" state:%s", tok2str(egp_status_updown_str, "%u", status));
+ ND_PRINT(" %s", tok2str(egp_reasons_str, "[reason %u]", GET_BE_U_2(egp->egp_reason)));
break;
}
+ return;
+invalid:
+ nd_print_invalid(ndo);
}
projects / tcpdump / blobdiff