#include "netdissect-stdinc.h"
-#include <stdio.h>
-#include <string.h>
-
#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
DCCP_RESET_CODE_TOO_BUSY,
DCCP_RESET_CODE_BAD_INIT_COOKIE,
DCCP_RESET_CODE_AGGRESSION_PENALTY,
- __DCCP_RESET_CODE_LAST
};
-
-static const char *dccp_reset_codes[] = {
- "unspecified",
- "closed",
- "aborted",
- "no_connection",
- "packet_error",
- "option_error",
- "mandatory_error",
- "connection_refused",
- "bad_service_code",
- "too_busy",
- "bad_init_cookie",
- "aggression_penalty",
+static const struct tok dccp_reset_code_str[] = {
+ { DCCP_RESET_CODE_UNSPECIFIED, "unspecified" },
+ { DCCP_RESET_CODE_CLOSED, "closed" },
+ { DCCP_RESET_CODE_ABORTED, "aborted" },
+ { DCCP_RESET_CODE_NO_CONNECTION, "no_connection" },
+ { DCCP_RESET_CODE_PACKET_ERROR, "packet_error" },
+ { DCCP_RESET_CODE_OPTION_ERROR, "option_error" },
+ { DCCP_RESET_CODE_MANDATORY_ERROR, "mandatory_error" },
+ { DCCP_RESET_CODE_CONNECTION_REFUSED, "connection_refused" },
+ { DCCP_RESET_CODE_BAD_SERVICE_CODE, "bad_service_code" },
+ { DCCP_RESET_CODE_TOO_BUSY, "too_busy" },
+ { DCCP_RESET_CODE_BAD_INIT_COOKIE, "bad_init_cookie" },
+ { DCCP_RESET_CODE_AGGRESSION_PENALTY, "aggression_penalty" },
+ { 0, NULL }
};
-static const char *dccp_feature_nums[] = {
- "reserved",
- "ccid",
- "allow_short_seqno",
- "sequence_window",
- "ecn_incapable",
- "ack_ratio",
- "send_ack_vector",
- "send_ndp_count",
- "minimum checksum coverage",
- "check data checksum",
+static const struct tok dccp_feature_num_str[] = {
+ { 0, "reserved" },
+ { 1, "ccid" },
+ { 2, "allow_short_seqno" },
+ { 3, "sequence_window" },
+ { 4, "ecn_incapable" },
+ { 5, "ack_ratio" },
+ { 6, "send_ack_vector" },
+ { 7, "send_ndp_count" },
+ { 8, "minimum checksum coverage" },
+ { 9, "check data checksum" },
+ { 0, NULL }
};
static u_int
dccp_csum_coverage(ndo, dh, len), IPPROTO_DCCP);
}
-static const char *dccp_reset_code(uint8_t code)
-{
- if (code >= __DCCP_RESET_CODE_LAST)
- return "invalid";
- return dccp_reset_codes[code];
-}
-
static uint64_t
dccp_seqno(netdissect_options *ndo, const u_char *bp)
{
uint64_t ackno;
if (DCCPH_X(dh) != 0) {
- ND_TCHECK_8(ackp);
ackno = GET_BE_U_6(ackp + 2);
} else {
- ND_TCHECK_4(ackp);
ackno = GET_BE_U_3(ackp + 1);
}
ND_PRINT("(ack=%" PRIu64 ") ", ackno);
-trunc:
- return;
}
static u_int dccp_print_option(netdissect_options *, const u_char *, u_int);
if (cp > ndo->ndo_snapend)
goto trunc;
if (len < sizeof(struct dccp_hdr)) {
- ND_PRINT("truncated-dccp - %u bytes missing!",
- (u_int)sizeof(struct dccp_hdr) - len);
+ ND_PRINT("truncated-dccp - %zu bytes missing!",
+ sizeof(struct dccp_hdr) - len);
return;
}
if (ip6) {
ND_PRINT("%s.%u > %s.%u: ",
- ip6addr_string(ndo, ip6->ip6_src), sport,
- ip6addr_string(ndo, ip6->ip6_dst), dport);
+ GET_IP6ADDR_STRING(ip6->ip6_src), sport,
+ GET_IP6ADDR_STRING(ip6->ip6_dst), dport);
} else {
ND_PRINT("%s.%u > %s.%u: ",
- ipaddr_string(ndo, ip->ip_src), sport,
- ipaddr_string(ndo, ip->ip_dst), dport);
+ GET_IPADDR_STRING(ip->ip_src), sport,
+ GET_IPADDR_STRING(ip->ip_dst), dport);
}
- ND_PRINT("DCCP");
+ nd_print_protocol_caps(ndo);
if (ndo->ndo_qflag) {
ND_PRINT(" %u", len - hlen);
ND_TCHECK_SIZE(dhr);
ND_PRINT("%s (code=%s) ",
tok2str(dccp_pkt_type_str, "", dccph_type),
- dccp_reset_code(GET_U_1(dhr->dccph_reset_code)));
+ tok2str(dccp_reset_code_str, "invalid", GET_U_1(dhr->dccph_reset_code)));
break;
}
case DCCP_PKT_SYNC:
return;
trunc:
nd_print_trunc(ndo);
- return;
}
+enum dccp_option_type {
+ DCCP_OPTION_PADDING = 0,
+ DCCP_OPTION_MANDATORY = 1,
+ DCCP_OPTION_SLOW_RECEIVER = 2,
+ DCCP_OPTION_CHANGE_L = 32,
+ DCCP_OPTION_CONFIRM_L = 33,
+ DCCP_OPTION_CHANGE_R = 34,
+ DCCP_OPTION_CONFIRM_R = 35,
+ DCCP_OPTION_INIT_COOKIE = 36,
+ DCCP_OPTION_NDP_COUNT = 37,
+ DCCP_OPTION_ACK_VECTOR_NONCE_0 = 38,
+ DCCP_OPTION_ACK_VECTOR_NONCE_1 = 39,
+ DCCP_OPTION_DATA_DROPPED = 40,
+ DCCP_OPTION_TIMESTAMP = 41,
+ DCCP_OPTION_TIMESTAMP_ECHO = 42,
+ DCCP_OPTION_ELAPSED_TIME = 43,
+ DCCP_OPTION_DATA_CHECKSUM = 44
+};
+
static const struct tok dccp_option_values[] = {
- { 0, "nop" },
- { 1, "mandatory" },
- { 2, "slowreceiver" },
- { 32, "change_l" },
- { 33, "confirm_l" },
- { 34, "change_r" },
- { 35, "confirm_r" },
- { 36, "initcookie" },
- { 37, "ndp_count" },
- { 38, "ack_vector0" },
- { 39, "ack_vector1" },
- { 40, "data_dropped" },
- { 41, "timestamp" },
- { 42, "timestamp_echo" },
- { 43, "elapsed_time" },
- { 44, "data_checksum" },
+ { DCCP_OPTION_PADDING, "nop" },
+ { DCCP_OPTION_MANDATORY, "mandatory" },
+ { DCCP_OPTION_SLOW_RECEIVER, "slowreceiver" },
+ { DCCP_OPTION_CHANGE_L, "change_l" },
+ { DCCP_OPTION_CONFIRM_L, "confirm_l" },
+ { DCCP_OPTION_CHANGE_R, "change_r" },
+ { DCCP_OPTION_CONFIRM_R, "confirm_r" },
+ { DCCP_OPTION_INIT_COOKIE, "initcookie" },
+ { DCCP_OPTION_NDP_COUNT, "ndp_count" },
+ { DCCP_OPTION_ACK_VECTOR_NONCE_0, "ack_vector0" },
+ { DCCP_OPTION_ACK_VECTOR_NONCE_1, "ack_vector1" },
+ { DCCP_OPTION_DATA_DROPPED, "data_dropped" },
+ { DCCP_OPTION_TIMESTAMP, "timestamp" },
+ { DCCP_OPTION_TIMESTAMP_ECHO, "timestamp_echo" },
+ { DCCP_OPTION_ELAPSED_TIME, "elapsed_time" },
+ { DCCP_OPTION_DATA_CHECKSUM, "data_checksum" },
{ 0, NULL }
};
{
uint8_t optlen, i;
- ND_TCHECK_1(option);
-
if (GET_U_1(option) >= 32) {
- ND_TCHECK_1(option + 1);
optlen = GET_U_1(option + 1);
if (optlen < 2) {
if (GET_U_1(option) >= 128)
ND_PRINT("%s",
tok2str(dccp_option_values, "Option %u", GET_U_1(option)));
switch (GET_U_1(option)) {
- case 32:
- case 33:
- case 34:
- case 35:
+ case DCCP_OPTION_CHANGE_L:
+ case DCCP_OPTION_CONFIRM_L:
+ case DCCP_OPTION_CHANGE_R:
+ case DCCP_OPTION_CONFIRM_R:
if (optlen < 3) {
ND_PRINT(" optlen too short");
return optlen;
}
- if (GET_U_1(option + 2) < 10){
- ND_PRINT(" %s",
- dccp_feature_nums[GET_U_1(option + 2)]);
- for (i = 0; i < optlen - 3; i++)
- ND_PRINT(" %u",
- GET_U_1(option + 3 + i));
- }
+ ND_PRINT(" %s", tok2str(dccp_feature_num_str,
+ "invalid (%u)", GET_U_1(option + 2)));
+ for (i = 0; i < optlen - 3; i++)
+ ND_PRINT(" %u", GET_U_1(option + 3 + i));
break;
- case 36:
+ case DCCP_OPTION_INIT_COOKIE:
if (optlen > 2) {
ND_PRINT(" 0x");
for (i = 0; i < optlen - 2; i++)
GET_U_1(option + 2 + i));
}
break;
- case 37:
+ case DCCP_OPTION_NDP_COUNT:
for (i = 0; i < optlen - 2; i++)
ND_PRINT(" %u", GET_U_1(option + 2 + i));
break;
- case 38:
+ case DCCP_OPTION_ACK_VECTOR_NONCE_0:
if (optlen > 2) {
ND_PRINT(" 0x");
for (i = 0; i < optlen - 2; i++)
GET_U_1(option + 2 + i));
}
break;
- case 39:
+ case DCCP_OPTION_ACK_VECTOR_NONCE_1:
if (optlen > 2) {
ND_PRINT(" 0x");
for (i = 0; i < optlen - 2; i++)
GET_U_1(option + 2 + i));
}
break;
- case 40:
+ case DCCP_OPTION_DATA_DROPPED:
if (optlen > 2) {
ND_PRINT(" 0x");
for (i = 0; i < optlen - 2; i++)
GET_U_1(option + 2 + i));
}
break;
- case 41:
+ case DCCP_OPTION_TIMESTAMP:
/*
* 13.1. Timestamp Option
*
else
ND_PRINT(" [optlen != 6]");
break;
- case 42:
+ case DCCP_OPTION_TIMESTAMP_ECHO:
/*
* 13.3. Timestamp Echo Option
*
break;
}
break;
- case 43:
+ case DCCP_OPTION_ELAPSED_TIME:
if (optlen == 6)
ND_PRINT(" %u", GET_BE_U_4(option + 2));
else if (optlen == 4)
else
ND_PRINT(" [optlen != 4 or 6]");
break;
- case 44:
+ case DCCP_OPTION_DATA_CHECKSUM:
if (optlen > 2) {
ND_PRINT(" ");
for (i = 0; i < optlen - 2; i++)
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