*/
#ifndef lint
-static const char rcsid[] =
-"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.10 2002-08-01 08:53:27 risso Exp $ (NETLAB/PEL)";
+static const char rcsid[] _U_ =
+"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.20 2005-07-07 01:22:20 guy Exp $ (NETLAB/PEL)";
#endif
#ifdef HAVE_CONFIG_H
#ifdef INET6
const struct ip6_hdr *ip6;
#endif
- const u_char *cp;
const void *endPacketPtr;
u_short sourcePort, destPort;
int chunkCount;
const struct sctpChunkDesc *chunkDescPtr;
const void *nextChunk;
+ const char *sep;
sctpPktHdr = (const struct sctpHeader*) bp;
endPacketPtr = (const u_char*)sctpPktHdr+sctpPacketLength;
else
ip6 = NULL;
#endif /*INET6*/
- cp = (const u_char *)(sctpPktHdr + 1);
- if (cp > snapend)
- {
- printf("[|sctp]");
- return;
- }
+ TCHECK(*sctpPktHdr);
if (sctpPacketLength < sizeof(struct sctpHeader))
{
/* sctpPacketLength -= sizeof(struct sctpHeader); packet length */
/* is now only as long as the payload */
- sourcePort = ntohs(sctpPktHdr->source);
- destPort = ntohs(sctpPktHdr->destination);
+ sourcePort = EXTRACT_16BITS(&sctpPktHdr->source);
+ destPort = EXTRACT_16BITS(&sctpPktHdr->destination);
#ifdef INET6
if (ip6) {
- if (ip6->ip6_nxt == IPPROTO_SCTP) {
- (void)printf("%s.%d > %s.%d: sctp",
- ip6addr_string(&ip6->ip6_src),
- sourcePort,
- ip6addr_string(&ip6->ip6_dst),
- destPort);
- } else {
- (void)printf("%d > %d: sctp",
- sourcePort, destPort);
- }
+ (void)printf("%s.%d > %s.%d: sctp",
+ ip6addr_string(&ip6->ip6_src),
+ sourcePort,
+ ip6addr_string(&ip6->ip6_dst),
+ destPort);
} else
#endif /*INET6*/
{
- if (ip->ip_p == IPPROTO_SCTP) {
- (void)printf("%s.%d > %s.%d: sctp",
- ipaddr_string(&ip->ip_src),
- sourcePort,
- ipaddr_string(&ip->ip_dst),
- destPort);
- } else {
- (void)printf("%d > %d: sctp",
- sourcePort, destPort);
- }
+ (void)printf("%s.%d > %s.%d: sctp",
+ ipaddr_string(&ip->ip_src),
+ sourcePort,
+ ipaddr_string(&ip->ip_dst),
+ destPort);
}
fflush(stdout);
- if (vflag < 2)
- return;
-
+ if (vflag >= 2)
+ sep = "\n\t";
+ else
+ sep = " (";
/* cycle through all chunks, printing information on each one */
for (chunkCount = 0,
chunkDescPtr = (const struct sctpChunkDesc *)
chunkDescPtr = (const struct sctpChunkDesc *) nextChunk, chunkCount++)
{
- u_short align;
+ u_int16_t chunkLength;
const u_char *chunkEnd;
+ u_int16_t align;
+
+ TCHECK(*chunkDescPtr);
+ chunkLength = EXTRACT_16BITS(&chunkDescPtr->chunkLength);
+ if (chunkLength < sizeof(*chunkDescPtr)) {
+ printf("%s%d) [Bad chunk length %u]", sep, chunkCount+1, chunkLength);
+ break;
+ }
- chunkEnd = ((const u_char*)chunkDescPtr + ntohs(chunkDescPtr->chunkLength));
+ TCHECK2(*((u_int8_t *)chunkDescPtr), chunkLength);
+ chunkEnd = ((const u_char*)chunkDescPtr + chunkLength);
- align=ntohs(chunkDescPtr->chunkLength) % 4;
+ align=chunkLength % 4;
if (align != 0)
align = 4 - align;
nextChunk = (const void *) (chunkEnd + align);
- printf("\n\t%d) ", chunkCount+1);
+ printf("%s%d) ", sep, chunkCount+1);
switch (chunkDescPtr->chunkID)
{
case SCTP_DATA :
dataHdrPtr=(const struct sctpDataPart*)(chunkDescPtr+1);
- printf("[TSN: %u] ", (u_int32_t)ntohl(dataHdrPtr->TSN));
- printf("[SID: %u] ", ntohs(dataHdrPtr->streamId));
- printf("[SSEQ %u] ", ntohs(dataHdrPtr->sequence));
- printf("[PPID 0x%x] ", (u_int32_t)ntohl(dataHdrPtr->payloadtype));
+ printf("[TSN: %u] ", EXTRACT_32BITS(&dataHdrPtr->TSN));
+ printf("[SID: %u] ", EXTRACT_16BITS(&dataHdrPtr->streamId));
+ printf("[SSEQ %u] ", EXTRACT_16BITS(&dataHdrPtr->sequence));
+ printf("[PPID 0x%x] ", EXTRACT_32BITS(&dataHdrPtr->payloadtype));
fflush(stdout);
- if (vflag) /* if verbose output is specified */
+ if (vflag >= 2) /* if verbose output is specified */
{ /* at the command line */
const u_char *payloadPtr;
printf("[Payload");
- if (!xflag && !qflag) {
+ if (!suppress_default_print) {
payloadPtr = (const u_char *) (++dataHdrPtr);
printf(":");
+ if (htons(chunkDescPtr->chunkLength) <
+ sizeof(struct sctpDataPart)+
+ sizeof(struct sctpChunkDesc)+1) {
+ printf("bogus chunk length %u]",
+ htons(chunkDescPtr->chunkLength));
+ return;
+ }
default_print(payloadPtr,
- htons(chunkDescPtr->chunkLength)-1 -
- sizeof(struct sctpDataPart)-sizeof(struct sctpChunkDesc));
+ htons(chunkDescPtr->chunkLength) -
+ (sizeof(struct sctpDataPart)+
+ sizeof(struct sctpChunkDesc)+1));
} else
printf("]");
}
printf("[INIT] ");
init=(const struct sctpInitiation*)(chunkDescPtr+1);
- printf("[init tag: %u] ", (u_int32_t)ntohl(init->initTag));
- printf("[rwnd: %u] ", (u_int32_t)ntohl(init->rcvWindowCredit));
- printf("[OS: %u] ", ntohs(init->NumPreopenStreams));
- printf("[MIS: %u] ", ntohs(init->MaxInboundStreams));
- printf("[init TSN: %u] ", (u_int32_t)ntohl(init->initialTSN));
+ printf("[init tag: %u] ", EXTRACT_32BITS(&init->initTag));
+ printf("[rwnd: %u] ", EXTRACT_32BITS(&init->rcvWindowCredit));
+ printf("[OS: %u] ", EXTRACT_16BITS(&init->NumPreopenStreams));
+ printf("[MIS: %u] ", EXTRACT_16BITS(&init->MaxInboundStreams));
+ printf("[init TSN: %u] ", EXTRACT_32BITS(&init->initialTSN));
#if(0) /* ALC you can add code for optional params here */
if( (init+1) < chunkEnd )
printf("[INIT ACK] ");
init=(const struct sctpInitiation*)(chunkDescPtr+1);
- printf("[init tag: %u] ", (u_int32_t)ntohl(init->initTag));
- printf("[rwnd: %u] ", (u_int32_t)ntohl(init->rcvWindowCredit));
- printf("[OS: %u] ", ntohs(init->NumPreopenStreams));
- printf("[MIS: %u] ", ntohs(init->MaxInboundStreams));
- printf("[init TSN: %u] ", (u_int32_t)ntohl(init->initialTSN));
+ printf("[init tag: %u] ", EXTRACT_32BITS(&init->initTag));
+ printf("[rwnd: %u] ", EXTRACT_32BITS(&init->rcvWindowCredit));
+ printf("[OS: %u] ", EXTRACT_16BITS(&init->NumPreopenStreams));
+ printf("[MIS: %u] ", EXTRACT_16BITS(&init->MaxInboundStreams));
+ printf("[init TSN: %u] ", EXTRACT_32BITS(&init->initialTSN));
#if(0) /* ALC you can add code for optional params here */
if( (init+1) < chunkEnd )
const struct sctpSelectiveAck *sack;
const struct sctpSelectiveFrag *frag;
int fragNo, tsnNo;
- const u_long *dupTSN;
+ const u_char *dupTSN;
printf("[SACK] ");
sack=(const struct sctpSelectiveAck*)(chunkDescPtr+1);
- printf("[cum ack %u] ", (u_int32_t)ntohl(sack->highestConseqTSN));
- printf("[a_rwnd %u] ", (u_int32_t)ntohl(sack->updatedRwnd));
- printf("[#gap acks %u] ", ntohs(sack->numberOfdesc));
- printf("[#dup tsns %u] ", ntohs(sack->numDupTsns));
+ printf("[cum ack %u] ", EXTRACT_32BITS(&sack->highestConseqTSN));
+ printf("[a_rwnd %u] ", EXTRACT_32BITS(&sack->updatedRwnd));
+ printf("[#gap acks %u] ", EXTRACT_16BITS(&sack->numberOfdesc));
+ printf("[#dup tsns %u] ", EXTRACT_16BITS(&sack->numDupTsns));
/* print gaps */
for (frag = ( (const struct sctpSelectiveFrag *)
((const struct sctpSelectiveAck *) sack+1)),
fragNo=0;
- (const void *)frag < nextChunk && fragNo < ntohs(sack->numberOfdesc);
+ (const void *)frag < nextChunk && fragNo < EXTRACT_16BITS(&sack->numberOfdesc);
frag++, fragNo++)
printf("\n\t\t[gap ack block #%d: start = %u, end = %u] ",
fragNo+1,
- (u_int32_t)(ntohl(sack->highestConseqTSN) + ntohs(frag->fragmentStart)),
- (u_int32_t)(ntohl(sack->highestConseqTSN) + ntohs(frag->fragmentEnd)));
+ EXTRACT_32BITS(&sack->highestConseqTSN) + EXTRACT_16BITS(&frag->fragmentStart),
+ EXTRACT_32BITS(&sack->highestConseqTSN) + EXTRACT_16BITS(&frag->fragmentEnd));
/* print duplicate TSNs */
- for (dupTSN = (const u_long*)frag, tsnNo=0;
- (const void *) dupTSN < nextChunk && tsnNo<ntohs(sack->numDupTsns);
- dupTSN++, tsnNo++)
+ for (dupTSN = (const u_char *)frag, tsnNo=0;
+ (const void *) dupTSN < nextChunk && tsnNo<EXTRACT_16BITS(&sack->numDupTsns);
+ dupTSN += 4, tsnNo++)
printf("\n\t\t[dup TSN #%u: %u] ", tsnNo+1,
- (u_int32_t)ntohl(*dupTSN));
+ EXTRACT_32BITS(dupTSN));
break;
}
printf("[Unknown chunk type: 0x%x]", chunkDescPtr->chunkID);
return;
}
+
+ if (vflag < 2)
+ sep = ", (";
}
+ return;
+
+trunc:
+ printf("[|sctp]");
+ return;
}
projects / tcpdump / blobdiff