#include "netdissect-stdinc.h"
+#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
void
sctp_print(netdissect_options *ndo,
- const u_char *bp, /* beginning of sctp packet */
- const u_char *bp2, /* beginning of enclosing */
- u_int sctpPacketLength) /* ip packet */
+ const u_char *bp, /* beginning of sctp packet */
+ const u_char *bp2, /* beginning of enclosing */
+ u_int sctpPacketLength) /* ip packet */
{
u_int sctpPacketLengthRemaining;
const struct sctpHeader *sctpPktHdr;
ndo->ndo_protocol = "sctp";
if (sctpPacketLength < sizeof(struct sctpHeader))
{
- ND_PRINT("truncated-sctp - %ld bytes missing!",
- (long)(sizeof(struct sctpHeader) - sctpPacketLength));
- return;
+ ND_PRINT("truncated-sctp - %zu bytes missing!",
+ sizeof(struct sctpHeader) - sctpPacketLength);
+ goto invalid;
}
sctpPktHdr = (const struct sctpHeader*) bp;
ND_TCHECK_SIZE(sctpPktHdr);
sctpPacketLengthRemaining = sctpPacketLength;
- sourcePort = EXTRACT_BE_U_2(sctpPktHdr->source);
- destPort = EXTRACT_BE_U_2(sctpPktHdr->destination);
+ sourcePort = GET_BE_U_2(sctpPktHdr->source);
+ destPort = GET_BE_U_2(sctpPktHdr->destination);
ip = (const struct ip *)bp2;
if (IP_V(ip) == 6)
if (ip6) {
ND_PRINT("%s.%u > %s.%u: sctp",
- ip6addr_string(ndo, ip6->ip6_src),
+ GET_IP6ADDR_STRING(ip6->ip6_src),
sourcePort,
- ip6addr_string(ndo, ip6->ip6_dst),
+ GET_IP6ADDR_STRING(ip6->ip6_dst),
destPort);
- } else
- {
+ } else {
ND_PRINT("%s.%u > %s.%u: sctp",
- ipaddr_string(ndo, ip->ip_src),
+ GET_IPADDR_STRING(ip->ip_src),
sourcePort,
- ipaddr_string(ndo, ip->ip_dst),
+ GET_IPADDR_STRING(ip->ip_dst),
destPort);
}
if (isForCES_port(sourcePort)) {
- ND_PRINT("[%s]", tok2str(ForCES_channels, NULL, sourcePort));
- isforces = 1;
+ ND_PRINT("[%s]", tok2str(ForCES_channels, NULL, sourcePort));
+ isforces = 1;
}
if (isForCES_port(destPort)) {
- ND_PRINT("[%s]", tok2str(ForCES_channels, NULL, destPort));
- isforces = 1;
+ ND_PRINT("[%s]", tok2str(ForCES_channels, NULL, destPort));
+ isforces = 1;
}
bp += sizeof(struct sctpHeader);
chunkDescPtr = (const struct sctpChunkDesc *)bp;
if (sctpPacketLengthRemaining < sizeof(*chunkDescPtr)) {
- ND_PRINT("%s%u) [chunk descriptor cut off at end of packet]", sep, chunkCount+1);
- break;
+ ND_PRINT("%s%u) [chunk descriptor cut off at end of packet]", sep, chunkCount+1);
+ break;
}
ND_TCHECK_SIZE(chunkDescPtr);
- chunkLength = EXTRACT_BE_U_2(chunkDescPtr->chunkLength);
+ chunkLength = GET_BE_U_2(chunkDescPtr->chunkLength);
if (chunkLength < sizeof(*chunkDescPtr)) {
- ND_PRINT("%s%u) [Bad chunk length %u, < size of chunk descriptor]", sep, chunkCount+1, chunkLength);
- break;
+ ND_PRINT("%s%u) [Bad chunk length %u, < size of chunk descriptor]", sep, chunkCount+1, chunkLength);
+ break;
}
chunkLengthRemaining = chunkLength;
align = 4 - align;
if (sctpPacketLengthRemaining < align) {
- ND_PRINT("%s%u) [Bad chunk length %u, > remaining data in packet]", sep, chunkCount+1, chunkLength);
- break;
+ ND_PRINT("%s%u) [Bad chunk length %u, > remaining data in packet]", sep, chunkCount+1, chunkLength);
+ break;
}
ND_TCHECK_LEN(bp, chunkLength);
chunkLengthRemaining -= sizeof(*chunkDescPtr);
ND_PRINT("%s%u) ", sep, chunkCount+1);
- chunkID = EXTRACT_U_1(chunkDescPtr->chunkID);
+ chunkID = GET_U_1(chunkDescPtr->chunkID);
ND_PRINT("[%s] ", tok2str(sctp_chunkid_str, "Unknown chunk type: 0x%x",
- chunkID));
+ chunkID));
switch (chunkID)
{
case SCTP_DATA :
const struct sctpDataPart *dataHdrPtr;
uint8_t chunkFlg;
uint32_t ppid;
- u_int payload_size;
+ uint16_t payload_size;
- chunkFlg = EXTRACT_U_1(chunkDescPtr->chunkFlg);
+ chunkFlg = GET_U_1(chunkDescPtr->chunkFlg);
if ((chunkFlg & SCTP_DATA_UNORDERED) == SCTP_DATA_UNORDERED)
ND_PRINT("(U)");
ND_PRINT("(E)");
if( ((chunkFlg & SCTP_DATA_UNORDERED) == SCTP_DATA_UNORDERED) ||
- ((chunkFlg & SCTP_DATA_FIRST_FRAG) == SCTP_DATA_FIRST_FRAG) ||
+ ((chunkFlg & SCTP_DATA_FIRST_FRAG) == SCTP_DATA_FIRST_FRAG) ||
((chunkFlg & SCTP_DATA_LAST_FRAG) == SCTP_DATA_LAST_FRAG) )
ND_PRINT(" ");
if (chunkLengthRemaining < sizeof(*dataHdrPtr)) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
dataHdrPtr=(const struct sctpDataPart*)bp;
- ppid = EXTRACT_BE_U_4(dataHdrPtr->payloadtype);
- ND_PRINT("[TSN: %u] ", EXTRACT_BE_U_4(dataHdrPtr->TSN));
- ND_PRINT("[SID: %u] ", EXTRACT_BE_U_2(dataHdrPtr->streamId));
- ND_PRINT("[SSEQ %u] ", EXTRACT_BE_U_2(dataHdrPtr->sequence));
+ ppid = GET_BE_U_4(dataHdrPtr->payloadtype);
+ ND_PRINT("[TSN: %u] ", GET_BE_U_4(dataHdrPtr->TSN));
+ ND_PRINT("[SID: %u] ", GET_BE_U_2(dataHdrPtr->streamId));
+ ND_PRINT("[SSEQ %u] ", GET_BE_U_2(dataHdrPtr->sequence));
ND_PRINT("[PPID %s] ",
tok2str(PayloadProto_idents, "0x%x", ppid));
payload_size = chunkLengthRemaining;
if (payload_size == 0) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
if (isforces) {
forces_print(ndo, bp, payload_size);
+ /* ndo_protocol reassignment after forces_print() call */
+ ndo->ndo_protocol = "sctp";
} else if (ndo->ndo_vflag >= 2) { /* if verbose output is specified */
/* at the command line */
switch (ppid) {
case SCTP_PPID_M3UA :
m3ua_print(ndo, bp, payload_size);
+ /* ndo_protocol reassignment after m3ua_print() call */
+ ndo->ndo_protocol = "sctp";
break;
default:
ND_PRINT("[Payload");
if (chunkLengthRemaining < sizeof(*init)) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
init=(const struct sctpInitiation*)bp;
- ND_PRINT("[init tag: %u] ", EXTRACT_BE_U_4(init->initTag));
- ND_PRINT("[rwnd: %u] ", EXTRACT_BE_U_4(init->rcvWindowCredit));
- ND_PRINT("[OS: %u] ", EXTRACT_BE_U_2(init->NumPreopenStreams));
- ND_PRINT("[MIS: %u] ", EXTRACT_BE_U_2(init->MaxInboundStreams));
- ND_PRINT("[init TSN: %u] ", EXTRACT_BE_U_4(init->initialTSN));
+ ND_PRINT("[init tag: %u] ", GET_BE_U_4(init->initTag));
+ ND_PRINT("[rwnd: %u] ", GET_BE_U_4(init->rcvWindowCredit));
+ ND_PRINT("[OS: %u] ", GET_BE_U_2(init->NumPreopenStreams));
+ ND_PRINT("[MIS: %u] ", GET_BE_U_2(init->MaxInboundStreams));
+ ND_PRINT("[init TSN: %u] ", GET_BE_U_4(init->initialTSN));
bp += sizeof(*init);
- sctpPacketLengthRemaining -= sizeof(*init);
+ sctpPacketLengthRemaining -= sizeof(*init);
chunkLengthRemaining -= sizeof(*init);
#if 0 /* ALC you can add code for optional params here */
ND_PRINT(" @@@@@ UNFINISHED @@@@@@%s\n",
"Optional params present, but not printed.");
#endif
- bp += chunkLengthRemaining;
+ bp += chunkLengthRemaining;
sctpPacketLengthRemaining -= chunkLengthRemaining;
- chunkLengthRemaining = 0;
+ chunkLengthRemaining = 0;
break;
}
case SCTP_INITIATION_ACK :
if (chunkLengthRemaining < sizeof(*init)) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
init=(const struct sctpInitiation*)bp;
- ND_PRINT("[init tag: %u] ", EXTRACT_BE_U_4(init->initTag));
- ND_PRINT("[rwnd: %u] ", EXTRACT_BE_U_4(init->rcvWindowCredit));
- ND_PRINT("[OS: %u] ", EXTRACT_BE_U_2(init->NumPreopenStreams));
- ND_PRINT("[MIS: %u] ", EXTRACT_BE_U_2(init->MaxInboundStreams));
- ND_PRINT("[init TSN: %u] ", EXTRACT_BE_U_4(init->initialTSN));
- bp += sizeof(*init);
- sctpPacketLengthRemaining -= sizeof(*init);
- chunkLengthRemaining -= sizeof(*init);
+ ND_PRINT("[init tag: %u] ", GET_BE_U_4(init->initTag));
+ ND_PRINT("[rwnd: %u] ", GET_BE_U_4(init->rcvWindowCredit));
+ ND_PRINT("[OS: %u] ", GET_BE_U_2(init->NumPreopenStreams));
+ ND_PRINT("[MIS: %u] ", GET_BE_U_2(init->MaxInboundStreams));
+ ND_PRINT("[init TSN: %u] ", GET_BE_U_4(init->initialTSN));
+ bp += sizeof(*init);
+ sctpPacketLengthRemaining -= sizeof(*init);
+ chunkLengthRemaining -= sizeof(*init);
#if 0 /* ALC you can add code for optional params here */
if( chunkLengthRemaining != 0 )
ND_PRINT(" @@@@@ UNFINISHED @@@@@@%s\n",
"Optional params present, but not printed.");
#endif
- bp += chunkLengthRemaining;
+ bp += chunkLengthRemaining;
sctpPacketLengthRemaining -= chunkLengthRemaining;
- chunkLengthRemaining = 0;
+ chunkLengthRemaining = 0;
break;
}
case SCTP_SELECTIVE_ACK:
if (chunkLengthRemaining < sizeof(*sack)) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
sack=(const struct sctpSelectiveAck*)bp;
- ND_PRINT("[cum ack %u] ", EXTRACT_BE_U_4(sack->highestConseqTSN));
- ND_PRINT("[a_rwnd %u] ", EXTRACT_BE_U_4(sack->updatedRwnd));
- ND_PRINT("[#gap acks %u] ", EXTRACT_BE_U_2(sack->numberOfdesc));
- ND_PRINT("[#dup tsns %u] ", EXTRACT_BE_U_2(sack->numDupTsns));
- bp += sizeof(*sack);
+ ND_PRINT("[cum ack %u] ", GET_BE_U_4(sack->highestConseqTSN));
+ ND_PRINT("[a_rwnd %u] ", GET_BE_U_4(sack->updatedRwnd));
+ ND_PRINT("[#gap acks %u] ", GET_BE_U_2(sack->numberOfdesc));
+ ND_PRINT("[#dup tsns %u] ", GET_BE_U_2(sack->numDupTsns));
+ bp += sizeof(*sack);
sctpPacketLengthRemaining -= sizeof(*sack);
- chunkLengthRemaining -= sizeof(*sack);
+ chunkLengthRemaining -= sizeof(*sack);
/* print gaps */
for (fragNo=0;
- chunkLengthRemaining != 0 && fragNo < EXTRACT_BE_U_2(sack->numberOfdesc);
+ chunkLengthRemaining != 0 && fragNo < GET_BE_U_2(sack->numberOfdesc);
bp += sizeof(*frag), sctpPacketLengthRemaining -= sizeof(*frag), chunkLengthRemaining -= sizeof(*frag), fragNo++) {
if (chunkLengthRemaining < sizeof(*frag)) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
frag = (const struct sctpSelectiveFrag *)bp;
ND_PRINT("\n\t\t[gap ack block #%u: start = %u, end = %u] ",
fragNo+1,
- EXTRACT_BE_U_4(sack->highestConseqTSN) + EXTRACT_BE_U_2(frag->fragmentStart),
- EXTRACT_BE_U_4(sack->highestConseqTSN) + EXTRACT_BE_U_2(frag->fragmentEnd));
+ GET_BE_U_4(sack->highestConseqTSN) + GET_BE_U_2(frag->fragmentStart),
+ GET_BE_U_4(sack->highestConseqTSN) + GET_BE_U_2(frag->fragmentEnd));
}
/* print duplicate TSNs */
for (tsnNo=0;
- chunkLengthRemaining != 0 && tsnNo<EXTRACT_BE_U_2(sack->numDupTsns);
+ chunkLengthRemaining != 0 && tsnNo<GET_BE_U_2(sack->numDupTsns);
bp += 4, sctpPacketLengthRemaining -= 4, chunkLengthRemaining -= 4, tsnNo++) {
if (chunkLengthRemaining < 4) {
ND_PRINT("bogus chunk length %u]", chunkLength);
- return;
+ goto invalid;
}
- dupTSN = (const u_char *)bp;
+ dupTSN = (const u_char *)bp;
ND_PRINT("\n\t\t[dup TSN #%u: %u] ", tsnNo+1,
- EXTRACT_BE_U_4(dupTSN));
+ GET_BE_U_4(dupTSN));
}
break;
}
default :
{
- bp += chunkLengthRemaining;
- sctpPacketLengthRemaining -= chunkLengthRemaining;
- chunkLengthRemaining = 0;
+ bp += chunkLengthRemaining;
+ sctpPacketLengthRemaining -= chunkLengthRemaining;
+ chunkLengthRemaining = 0;
break;
}
}
sctpPacketLengthRemaining -= chunkLengthRemaining;
if (ndo->ndo_vflag < 2)
- sep = ", (";
+ sep = ", (";
if (align != 0) {
/*
}
}
return;
-
-trunc:
- nd_print_trunc(ndo);
+invalid:
+ nd_print_invalid(ndo);
}
projects / tcpdump / blobdiff