#ifndef lint
static const char rcsid[] =
-"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.3 2001-05-09 02:42:50 itojun Exp $ (NETLAB/PEL)";
+"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.9 2002-06-11 17:08:56 itojun Exp $ (NETLAB/PEL)";
#endif
#ifdef HAVE_CONFIG_H
#include "sctpConstants.h"
#include <assert.h>
-#if __STDC__
-struct mbuf;
-struct rtentry;
-#endif
-#include <net/if.h>
-
#include <netinet/in.h>
#include <stdio.h>
void sctp_print(const u_char *bp, /* beginning of sctp packet */
const u_char *bp2, /* beginning of enclosing */
u_int sctpPacketLength) /* ip packet */
-{
+{
const struct sctpHeader *sctpPktHdr;
const struct ip *ip;
#ifdef INET6
const struct ip6_hdr *ip6;
#endif
const u_char *cp;
- void *endPacketPtr;
+ const void *endPacketPtr;
u_short sourcePort, destPort;
int chunkCount;
- struct sctpChunkDesc *chunkDescPtr;
- void *nextChunk;
+ const struct sctpChunkDesc *chunkDescPtr;
+ const void *nextChunk;
+
+ sctpPktHdr = (const struct sctpHeader*) bp;
+ endPacketPtr = (const u_char*)sctpPktHdr+sctpPacketLength;
- sctpPktHdr = (struct sctpHeader*) bp;
- endPacketPtr = ((u_char*)((u_char*)sctpPktHdr+sctpPacketLength));
-
if( (u_long) endPacketPtr > (u_long) snapend)
- endPacketPtr = (void *) snapend;
+ endPacketPtr = (const void *) snapend;
ip = (struct ip *)bp2;
#ifdef INET6
if (IP_V(ip) == 6)
- ip6 = (struct ip6_hdr *)bp2;
+ ip6 = (const struct ip6_hdr *)bp2;
else
ip6 = NULL;
#endif /*INET6*/
- cp = (u_char *)(sctpPktHdr + 1);
+ cp = (const u_char *)(sctpPktHdr + 1);
if (cp > snapend)
- {
+ {
printf("[|sctp]");
- return;
- }
+ return;
+ }
- if (sctpPacketLength < sizeof(struct sctpHeader))
+ if (sctpPacketLength < sizeof(struct sctpHeader))
{
- (void)printf("truncated-sctp - %d bytes missing!",
- sctpPacketLength-sizeof(struct sctpHeader));
+ (void)printf("truncated-sctp - %ld bytes missing!",
+ (long)sctpPacketLength-sizeof(struct sctpHeader));
return;
}
-
+
/* sctpPacketLength -= sizeof(struct sctpHeader); packet length */
/* is now only as long as the payload */
sourcePort = ntohs(sctpPktHdr->source);
destPort = ntohs(sctpPktHdr->destination);
-
+
#ifdef INET6
if (ip6) {
if (ip6->ip6_nxt == IPPROTO_SCTP) {
if (vflag < 2)
return;
-
+
/* cycle through all chunks, printing information on each one */
- for (chunkCount = 0,
- chunkDescPtr = (struct sctpChunkDesc *) ( (u_char*) sctpPktHdr +
- sizeof(struct sctpHeader));
+ for (chunkCount = 0,
+ chunkDescPtr = (const struct sctpChunkDesc *)
+ ((const u_char*) sctpPktHdr + sizeof(struct sctpHeader));
chunkDescPtr != NULL &&
- ( (void *) ((u_char *) chunkDescPtr + sizeof(struct sctpChunkDesc))
+ ( (const void *)
+ ((const u_char *) chunkDescPtr + sizeof(struct sctpChunkDesc))
<= endPacketPtr);
-
- chunkDescPtr = (struct sctpChunkDesc *) nextChunk, chunkCount++)
+
+ chunkDescPtr = (const struct sctpChunkDesc *) nextChunk, chunkCount++)
{
u_short align;
- u_char *chunkEnd;
-
- chunkEnd = ((u_char*)chunkDescPtr + ntohs(chunkDescPtr->chunkLength));
-
+ const u_char *chunkEnd;
+
+ chunkEnd = ((const u_char*)chunkDescPtr + ntohs(chunkDescPtr->chunkLength));
+
align=ntohs(chunkDescPtr->chunkLength) % 4;
if (align != 0)
align = 4 - align;
- nextChunk = (void *) (chunkEnd + align);
+ nextChunk = (const void *) (chunkEnd + align);
printf("\n\t%d) ", chunkCount+1);
switch (chunkDescPtr->chunkID)
{
case SCTP_DATA :
{
- struct sctpDataPart *dataHdrPtr;
-
+ const struct sctpDataPart *dataHdrPtr;
+
printf("[DATA] ");
-
- if ((chunkDescPtr->chunkFlg & SCTP_DATA_UNORDERED)
+
+ if ((chunkDescPtr->chunkFlg & SCTP_DATA_UNORDERED)
== SCTP_DATA_UNORDERED)
printf("(U)");
- if ((chunkDescPtr->chunkFlg & SCTP_DATA_FIRST_FRAG)
+ if ((chunkDescPtr->chunkFlg & SCTP_DATA_FIRST_FRAG)
== SCTP_DATA_FIRST_FRAG)
printf("(B)");
-
- if ((chunkDescPtr->chunkFlg & SCTP_DATA_LAST_FRAG)
+
+ if ((chunkDescPtr->chunkFlg & SCTP_DATA_LAST_FRAG)
== SCTP_DATA_LAST_FRAG)
printf("(E)");
- if( ((chunkDescPtr->chunkFlg & SCTP_DATA_UNORDERED)
- == SCTP_DATA_UNORDERED)
+ if( ((chunkDescPtr->chunkFlg & SCTP_DATA_UNORDERED)
+ == SCTP_DATA_UNORDERED)
||
- ((chunkDescPtr->chunkFlg & SCTP_DATA_FIRST_FRAG)
+ ((chunkDescPtr->chunkFlg & SCTP_DATA_FIRST_FRAG)
== SCTP_DATA_FIRST_FRAG)
||
- ((chunkDescPtr->chunkFlg & SCTP_DATA_LAST_FRAG)
+ ((chunkDescPtr->chunkFlg & SCTP_DATA_LAST_FRAG)
== SCTP_DATA_LAST_FRAG) )
printf(" ");
- dataHdrPtr=(struct sctpDataPart*)(chunkDescPtr+1);
-
+ 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));
if (vflag) /* if verbose output is specified */
{ /* at the command line */
- char *payloadPtr;
-
- printf("[Payload: {");
- fflush(stdout);
-
- payloadPtr = (char *) (++dataHdrPtr);
- write(STDOUT_FILENO, payloadPtr,
- htons(chunkDescPtr->chunkLength)-1 -
- sizeof(struct sctpDataPart)-sizeof(struct sctpChunkDesc));
- printf("}] ");
- fflush(stdout);
+ const u_char *payloadPtr;
+
+ printf("[Payload");
+
+ if (!xflag && !qflag) {
+ payloadPtr = (const u_char *) (++dataHdrPtr);
+ printf(":");
+ default_print(payloadPtr,
+ htons(chunkDescPtr->chunkLength)-1 -
+ sizeof(struct sctpDataPart)-sizeof(struct sctpChunkDesc));
+ } else
+ printf("]");
}
break;
}
case SCTP_INITIATION :
{
- struct sctpInitiation *init;
+ const struct sctpInitiation *init;
printf("[INIT] ");
- init=(struct sctpInitiation*)(chunkDescPtr+1);
+ 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));
}
case SCTP_INITIATION_ACK :
{
- struct sctpInitiation *init;
-
+ const struct sctpInitiation *init;
+
printf("[INIT ACK] ");
- init=(struct sctpInitiation*)(chunkDescPtr+1);
+ 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));
-
+
#if(0) /* ALC you can add code for optional params here */
if( (init+1) < chunkEnd )
printf(" @@@@@ UNFINISHED @@@@@@%s\n",
}
case SCTP_SELECTIVE_ACK:
{
- struct sctpSelectiveAck *sack;
- struct sctpSelectiveFrag *frag;
+ const struct sctpSelectiveAck *sack;
+ const struct sctpSelectiveFrag *frag;
int fragNo, tsnNo;
- u_long *dupTSN;
+ const u_long *dupTSN;
printf("[SACK] ");
- sack=(struct sctpSelectiveAck*)(chunkDescPtr+1);
+ 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));
-
-
+
+
/* print gaps */
- for (frag = ( (struct sctpSelectiveFrag *)
- ((struct sctpSelectiveAck *) sack+1)),
+ for (frag = ( (const struct sctpSelectiveFrag *)
+ ((const struct sctpSelectiveAck *) sack+1)),
fragNo=0;
- (void *)frag < nextChunk && fragNo < ntohs(sack->numberOfdesc);
+ (const void *)frag < nextChunk && fragNo < ntohs(sack->numberOfdesc);
frag++, fragNo++)
- printf("\n\t\t[gap ack block #%d: start = %u, end = %u] ",
+ 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)));
-
+
/* print duplicate TSNs */
- for (dupTSN = (u_long*)frag, tsnNo=0;
- (void *) dupTSN < nextChunk && tsnNo<ntohs(sack->numDupTsns);
+ for (dupTSN = (const u_long*)frag, tsnNo=0;
+ (const void *) dupTSN < nextChunk && tsnNo<ntohs(sack->numDupTsns);
dupTSN++, tsnNo++)
printf("\n\t\t[dup TSN #%u: %u] ", tsnNo+1,
(u_int32_t)ntohl(*dupTSN));
}
case SCTP_HEARTBEAT_REQUEST :
{
- struct sctpHBsender *hb;
+ const struct sctpHBsender *hb;
- hb=(struct sctpHBsender*)chunkDescPtr;
+ hb=(const struct sctpHBsender*)chunkDescPtr;
printf("[HB REQ] ");
-
+
break;
}
case SCTP_HEARTBEAT_ACK :
case SCTP_ECN_ECHO :
printf("[ECN ECHO] ");
break;
- case SCTP_ECN_CWR :
+ case SCTP_ECN_CWR :
printf("[ECN CWR] ");
break;
case SCTP_SHUTDOWN_COMPLETE :
projects / tcpdump / blobdiff