*/
#ifndef lint
-static const char rcsid[] =
-"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.1 2001-05-09 00:34:35 fenner Exp $ (NETLAB/PEL)";
+static const char rcsid[] _U_ =
+"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.21 2007-09-13 18:03:49 guy Exp $ (NETLAB/PEL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
+#include <tcpdump-stdinc.h>
-#include <unistd.h>
#include "sctpHeader.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>
#include <string.h>
#include "ip6.h"
#endif
+#define CHAN_HP 6704
+#define CHAN_MP 6705
+#define CHAN_LP 6706
+
+struct tok ForCES_channels[] = {
+ { CHAN_HP, "ForCES HP" },
+ { CHAN_MP, "ForCES MP" },
+ { CHAN_LP, "ForCES LP" },
+ { 0, NULL }
+};
+
+static inline int isForCES_port(u_short Port)
+{
+ if (Port == CHAN_HP)
+ return 1;
+ if (Port == CHAN_MP)
+ return 1;
+ if (Port == CHAN_LP)
+ return 1;
+
+ return 0;
+}
+
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;
+ const char *sep;
+ int isforces = 0;
+
+
+ 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);
- if (cp > snapend)
- {
- printf("[|sctp]");
- return;
- }
-
- if (sctpPacketLength < sizeof(struct sctpHeader))
+ TCHECK(*sctpPktHdr);
+
+ 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);
-
+ 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 (isForCES_port(sourcePort)) {
+ printf("[%s]", tok2str(ForCES_channels, NULL, sourcePort));
+ isforces = 1;
+ }
+ if (isForCES_port(destPort)) {
+ printf("[%s]", tok2str(ForCES_channels, NULL, destPort));
+ isforces = 1;
+ }
+
+ if (vflag >= 2)
+ sep = "\n\t";
+ else
+ sep = " (";
/* 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));
-
- align=ntohs(chunkDescPtr->chunkLength) % 4;
+ 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;
+ }
+
+ TCHECK2(*((u_int8_t *)chunkDescPtr), chunkLength);
+ chunkEnd = ((const u_char*)chunkDescPtr + chunkLength);
+
+ align=chunkLength % 4;
if (align != 0)
align = 4 - align;
- nextChunk = (void *) (chunkEnd + align);
+ nextChunk = (const void *) (chunkEnd + align);
- printf("\n\t%d) ", chunkCount+1);
+ printf("%s%d) ", sep, 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);
-
- printf("[TSN: %lu] ", ntohl(dataHdrPtr->TSN));
- printf("[SID: %u] ", ntohs(dataHdrPtr->streamId));
- printf("[SSEQ %u] ", ntohs(dataHdrPtr->sequence));
- printf("[PPID 0x%x] ", ntohl(dataHdrPtr->payloadtype));
+ dataHdrPtr=(const struct sctpDataPart*)(chunkDescPtr+1);
+
+ 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 (isforces) {
+ const u_char *payloadPtr;
+ u_int chunksize = sizeof(struct sctpDataPart)+
+ sizeof(struct sctpChunkDesc);
+ payloadPtr = (const u_char *) (dataHdrPtr + 1);
+ if (EXTRACT_16BITS(&chunkDescPtr->chunkLength) <
+ sizeof(struct sctpDataPart)+
+ sizeof(struct sctpChunkDesc)+1) {
+ /* Less than 1 byte of chunk payload */
+ printf("bogus ForCES chunk length %u]",
+ EXTRACT_16BITS(&chunkDescPtr->chunkLength));
+ return;
+ }
+
+ forces_print(payloadPtr, EXTRACT_16BITS(&chunkDescPtr->chunkLength)- chunksize);
+ } else if (vflag >= 2) { /* if verbose output is specified */
+ /* at the command line */
+ const u_char *payloadPtr;
- 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);
+ printf("[Payload");
+
+ if (!suppress_default_print) {
+ payloadPtr = (const u_char *) (++dataHdrPtr);
+ printf(":");
+ if (EXTRACT_16BITS(&chunkDescPtr->chunkLength) <
+ sizeof(struct sctpDataPart)+
+ sizeof(struct sctpChunkDesc)+1) {
+ /* Less than 1 byte of chunk payload */
+ printf("bogus chunk length %u]",
+ EXTRACT_16BITS(&chunkDescPtr->chunkLength));
+ return;
+ }
+ default_print(payloadPtr,
+ EXTRACT_16BITS(&chunkDescPtr->chunkLength) -
+ (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);
- printf("[init tag: %lu] ", ntohl(init->initTag));
- printf("[rwnd: %lu] ", ntohl(init->rcvWindowCredit));
- printf("[OS: %u] ", ntohs(init->NumPreopenStreams));
- printf("[MIS: %u] ", ntohs(init->MaxInboundStreams));
- printf("[init TSN: %lu] ", ntohl(init->initialTSN));
+ init=(const struct sctpInitiation*)(chunkDescPtr+1);
+ 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 )
}
case SCTP_INITIATION_ACK :
{
- struct sctpInitiation *init;
-
+ const struct sctpInitiation *init;
+
printf("[INIT ACK] ");
- init=(struct sctpInitiation*)(chunkDescPtr+1);
- printf("[init tag: %lu] ", ntohl(init->initTag));
- printf("[rwnd: %lu] ", ntohl(init->rcvWindowCredit));
- printf("[OS: %u] ", ntohs(init->NumPreopenStreams));
- printf("[MIS: %u] ", ntohs(init->MaxInboundStreams));
- printf("[init TSN: %lu] ", ntohl(init->initialTSN));
-
+ init=(const struct sctpInitiation*)(chunkDescPtr+1);
+ 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(" @@@@@ 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_char *dupTSN;
printf("[SACK] ");
- sack=(struct sctpSelectiveAck*)(chunkDescPtr+1);
- printf("[cum ack %lu] ", ntohl(sack->highestConseqTSN));
- printf("[a_rwnd %lu] ", ntohl(sack->updatedRwnd));
- printf("[#gap acks %u] ", ntohs(sack->numberOfdesc));
- printf("[#dup tsns %u] ", ntohs(sack->numDupTsns));
-
-
+ sack=(const struct sctpSelectiveAck*)(chunkDescPtr+1);
+ 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 = ( (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 < EXTRACT_16BITS(&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,
- ntohl(sack->highestConseqTSN) + ntohs(frag->fragmentStart),
- 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 = (u_long*)frag, tsnNo=0;
- (void *) dupTSN < nextChunk && tsnNo<ntohs(sack->numDupTsns);
- dupTSN++, tsnNo++)
- printf("\n\t\t[dup TSN #%u: %lu] ", tsnNo+1, ntohl(*dupTSN));
+ 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,
+ EXTRACT_32BITS(dupTSN));
break;
}
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 :
printf("[Unknown chunk type: 0x%x]", chunkDescPtr->chunkID);
return;
}
+
+ if (vflag < 2)
+ sep = ", (";
}
+ return;
+
+trunc:
+ printf("[|sctp]");
+ return;
}
projects / tcpdump / blobdiff