* SUCH DAMAGE.
*/
-#ifndef lint
-static const char rcsid[] =
-"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.4 2001-06-27 02:48:45 itojun 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
+/* Definitions from:
+ *
+ * SCTP reference Implementation Copyright (C) 1999 Cisco And Motorola
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of Cisco nor of Motorola may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the SCTP reference Implementation
+ *
+ *
+ * Please send any bug reports or fixes you make to one of the following email
+ * addresses:
+ *
+ *
+ * Any bugs reported given to us we will try to fix... any fixes shared will
+ * be incorperated into the next SCTP release.
+ */
+
+/* The valid defines for all message
+ * types know to SCTP. 0 is reserved
+ */
+#define SCTP_DATA 0x00
+#define SCTP_INITIATION 0x01
+#define SCTP_INITIATION_ACK 0x02
+#define SCTP_SELECTIVE_ACK 0x03
+#define SCTP_HEARTBEAT_REQUEST 0x04
+#define SCTP_HEARTBEAT_ACK 0x05
+#define SCTP_ABORT_ASSOCIATION 0x06
+#define SCTP_SHUTDOWN 0x07
+#define SCTP_SHUTDOWN_ACK 0x08
+#define SCTP_OPERATION_ERR 0x09
+#define SCTP_COOKIE_ECHO 0x0a
+#define SCTP_COOKIE_ACK 0x0b
+#define SCTP_ECN_ECHO 0x0c
+#define SCTP_ECN_CWR 0x0d
+#define SCTP_SHUTDOWN_COMPLETE 0x0e
+#define SCTP_FORWARD_CUM_TSN 0xc0
+#define SCTP_RELIABLE_CNTL 0xc1
+#define SCTP_RELIABLE_CNTL_ACK 0xc2
+
+/* Data Chuck Specific Flags */
+#define SCTP_DATA_FRAG_MASK 0x03
+#define SCTP_DATA_MIDDLE_FRAG 0x00
+#define SCTP_DATA_LAST_FRAG 0x01
+#define SCTP_DATA_FIRST_FRAG 0x02
+#define SCTP_DATA_NOT_FRAG 0x03
+#define SCTP_DATA_UNORDERED 0x04
+
+#define SCTP_ADDRMAX 60
+
+#define CHAN_HP 6704
+#define CHAN_MP 6705
+#define CHAN_LP 6706
+
+/* the sctp common header */
+
+struct sctpHeader{
+ u_int16_t source;
+ u_int16_t destination;
+ u_int32_t verificationTag;
+ u_int32_t adler32;
+};
+
+/* various descriptor parsers */
+
+struct sctpChunkDesc{
+ u_int8_t chunkID;
+ u_int8_t chunkFlg;
+ u_int16_t chunkLength;
+};
+
+struct sctpParamDesc{
+ u_int16_t paramType;
+ u_int16_t paramLength;
+};
+
+
+struct sctpRelChunkDesc{
+ struct sctpChunkDesc chk;
+ u_int32_t serialNumber;
+};
+
+struct sctpVendorSpecificParam {
+ struct sctpParamDesc p; /* type must be 0xfffe */
+ u_int32_t vendorId; /* vendor ID from RFC 1700 */
+ u_int16_t vendorSpecificType;
+ u_int16_t vendorSpecificLen;
+};
+
+
+/* Structures for the control parts */
+
+
+
+/* Sctp association init request/ack */
+
+/* this is used for init ack, too */
+struct sctpInitiation{
+ u_int32_t initTag; /* tag of mine */
+ u_int32_t rcvWindowCredit; /* rwnd */
+ u_int16_t NumPreopenStreams; /* OS */
+ u_int16_t MaxInboundStreams; /* MIS */
+ u_int32_t initialTSN;
+ /* optional param's follow in sctpParamDesc form */
+};
+
+struct sctpV4IpAddress{
+ struct sctpParamDesc p; /* type is set to SCTP_IPV4_PARAM_TYPE, len=10 */
+ u_int32_t ipAddress;
+};
+
+
+struct sctpV6IpAddress{
+ struct sctpParamDesc p; /* type is set to SCTP_IPV6_PARAM_TYPE, len=22 */
+ u_int8_t ipAddress[16];
+};
+
+struct sctpDNSName{
+ struct sctpParamDesc param;
+ u_int8_t name[1];
+};
+
+
+struct sctpCookiePreserve{
+ struct sctpParamDesc p; /* type is set to SCTP_COOKIE_PRESERVE, len=8 */
+ u_int32_t extraTime;
+};
+
+
+struct sctpTimeStamp{
+ u_int32_t ts_sec;
+ u_int32_t ts_usec;
+};
+
+/* wire structure of my cookie */
+struct cookieMessage{
+ u_int32_t TieTag_curTag; /* copied from assoc if present */
+ u_int32_t TieTag_hisTag; /* copied from assoc if present */
+ int32_t cookieLife; /* life I will award this cookie */
+ struct sctpTimeStamp timeEnteringState; /* the time I built cookie */
+ struct sctpInitiation initAckISent; /* the INIT-ACK that I sent to my peer */
+ u_int32_t addressWhereISent[4]; /* I make this 4 ints so I get 128bits for future */
+ int32_t addrtype; /* address type */
+ u_int16_t locScope; /* V6 local scope flag */
+ u_int16_t siteScope; /* V6 site scope flag */
+ /* at the end is tacked on the INIT chunk sent in
+ * its entirety and of course our
+ * signature.
+ */
+};
+
+
+/* this guy is for use when
+ * I have a initiate message gloming the
+ * things together.
+
+ */
+struct sctpUnifiedInit{
+ struct sctpChunkDesc uh;
+ struct sctpInitiation initm;
+};
+
+struct sctpSendableInit{
+ struct sctpHeader mh;
+ struct sctpUnifiedInit msg;
+};
+
+
+/* Selective Acknowledgement
+ * has the following structure with
+ * a optional ammount of trailing int's
+ * on the last part (based on the numberOfDesc
+ * field).
+ */
+
+struct sctpSelectiveAck{
+ u_int32_t highestConseqTSN;
+ u_int32_t updatedRwnd;
+ u_int16_t numberOfdesc;
+ u_int16_t numDupTsns;
+};
+
+struct sctpSelectiveFrag{
+ u_int16_t fragmentStart;
+ u_int16_t fragmentEnd;
+};
+
+
+struct sctpUnifiedSack{
+ struct sctpChunkDesc uh;
+ struct sctpSelectiveAck sack;
+};
+
+/* for both RTT request/response the
+ * following is sent
+ */
+
+struct sctpHBrequest {
+ u_int32_t time_value_1;
+ u_int32_t time_value_2;
+};
+
+/* here is what I read and respond with to. */
+struct sctpHBunified{
+ struct sctpChunkDesc hdr;
+ struct sctpParamDesc hb;
+};
+
+
+/* here is what I send */
+struct sctpHBsender{
+ struct sctpChunkDesc hdr;
+ struct sctpParamDesc hb;
+ struct sctpHBrequest rtt;
+ int8_t addrFmt[SCTP_ADDRMAX];
+ u_int16_t userreq;
+};
+
+
+
+/* for the abort and shutdown ACK
+ * we must carry the init tag in the common header. Just the
+ * common header is all that is needed with a chunk descriptor.
+ */
+struct sctpUnifiedAbort{
+ struct sctpChunkDesc uh;
+};
+
+struct sctpUnifiedAbortLight{
+ struct sctpHeader mh;
+ struct sctpChunkDesc uh;
+};
+
+struct sctpUnifiedAbortHeavy{
+ struct sctpHeader mh;
+ struct sctpChunkDesc uh;
+ u_int16_t causeCode;
+ u_int16_t causeLen;
+};
+
+/* For the graceful shutdown we must carry
+ * the tag (in common header) and the highest consequitive acking value
+ */
+struct sctpShutdown {
+ u_int32_t TSN_Seen;
+};
+
+struct sctpUnifiedShutdown{
+ struct sctpChunkDesc uh;
+ struct sctpShutdown shut;
+};
+
+/* in the unified message we add the trailing
+ * stream id since it is the only message
+ * that is defined as a operation error.
+ */
+struct sctpOpErrorCause{
+ u_int16_t cause;
+ u_int16_t causeLen;
+};
+
+struct sctpUnifiedOpError{
+ struct sctpChunkDesc uh;
+ struct sctpOpErrorCause c;
+};
+
+struct sctpUnifiedStreamError{
+ struct sctpHeader mh;
+ struct sctpChunkDesc uh;
+ struct sctpOpErrorCause c;
+ u_int16_t strmNum;
+ u_int16_t reserved;
+};
+
+struct staleCookieMsg{
+ struct sctpHeader mh;
+ struct sctpChunkDesc uh;
+ struct sctpOpErrorCause c;
+ u_int32_t moretime;
+};
+
+/* the following is used in all sends
+ * where nothing is needed except the
+ * chunk/type i.e. shutdownAck Abort */
+
+struct sctpUnifiedSingleMsg{
+ struct sctpHeader mh;
+ struct sctpChunkDesc uh;
+};
+
+struct sctpDataPart{
+ u_int32_t TSN;
+ u_int16_t streamId;
+ u_int16_t sequence;
+ u_int32_t payloadtype;
+};
+
+struct sctpUnifiedDatagram{
+ struct sctpChunkDesc uh;
+ struct sctpDataPart dp;
+};
+
+struct sctpECN_echo{
+ struct sctpChunkDesc uh;
+ u_int32_t Lowest_TSN;
+};
+
+
+struct sctpCWR{
+ struct sctpChunkDesc uh;
+ u_int32_t TSN_reduced_at;
+};
+
+static const 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 - %ld bytes missing!",
+ (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: %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));
+ 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;
+
+ printf("[Payload");
- 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);
+ 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: %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));
+ 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: %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));
-
+ 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 %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));
-
-
+ 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,
- (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 = (u_long*)frag, tsnNo=0;
- (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;
}
case SCTP_HEARTBEAT_REQUEST :
- {
- struct sctpHBsender *hb;
-
- hb=(struct sctpHBsender*)chunkDescPtr;
-
- printf("[HB REQ] ");
-
- break;
- }
+ printf("[HB REQ] ");
+ break;
case SCTP_HEARTBEAT_ACK :
printf("[HB ACK] ");
break;
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