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Diffstat (limited to 'contrib/tcpdump/print-sctp.c')
| -rw-r--r-- | contrib/tcpdump/print-sctp.c | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-sctp.c b/contrib/tcpdump/print-sctp.c new file mode 100644 index 000000000000..8bf45ca701a8 --- /dev/null +++ b/contrib/tcpdump/print-sctp.c @@ -0,0 +1,351 @@ +/* Copyright (c) 2001 NETLAB, Temple University + * Copyright (c) 2001 Protocol Engineering Lab, University of Delaware + * + * Jerry Heinz <gheinz@astro.temple.edu> + * John Fiore <jfiore@joda.cis.temple.edu> + * Armando L. Caro Jr. <acaro@cis.udel.edu> + * + * 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 the University nor of the Laboratory 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. + */ + +#ifndef lint +static const char rcsid[] = +"@(#) $Header: /tcpdump/master/tcpdump/print-sctp.c,v 1.7 2001/12/12 07:16:40 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 <unistd.h> +#include "sctpHeader.h" +#include "sctpConstants.h" +#include <assert.h> + +#include <netinet/in.h> + +#include <stdio.h> +#include <string.h> + +#include "interface.h" +#include "addrtoname.h" +#include "extract.h" /* must come after interface.h */ +#include "ip.h" +#ifdef INET6 +#include "ip6.h" +#endif + +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; + u_short sourcePort, destPort; + int chunkCount; + struct sctpChunkDesc *chunkDescPtr; + void *nextChunk; + + sctpPktHdr = (struct sctpHeader*) bp; + endPacketPtr = ((u_char*)((u_char*)sctpPktHdr+sctpPacketLength)); + + if( (u_long) endPacketPtr > (u_long) snapend) + endPacketPtr = (void *) snapend; + ip = (struct ip *)bp2; +#ifdef INET6 + if (IP_V(ip) == 6) + ip6 = (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)) + { + (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) { + (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); + } + } 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); + } + } + fflush(stdout); + + 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)); + chunkDescPtr != NULL && + ( (void *) ((u_char *) chunkDescPtr + sizeof(struct sctpChunkDesc)) + <= endPacketPtr); + + chunkDescPtr = (struct sctpChunkDesc *) nextChunk, chunkCount++) + { + u_short align; + u_char *chunkEnd; + + chunkEnd = ((u_char*)chunkDescPtr + ntohs(chunkDescPtr->chunkLength)); + + align=ntohs(chunkDescPtr->chunkLength) % 4; + if (align != 0) + align = 4 - align; + + nextChunk = (void *) (chunkEnd + align); + + printf("\n\t%d) ", chunkCount+1); + switch (chunkDescPtr->chunkID) + { + case SCTP_DATA : + { + struct sctpDataPart *dataHdrPtr; + + printf("[DATA] "); + + if ((chunkDescPtr->chunkFlg & SCTP_DATA_UNORDERED) + == SCTP_DATA_UNORDERED) + printf("(U)"); + + if ((chunkDescPtr->chunkFlg & SCTP_DATA_FIRST_FRAG) + == SCTP_DATA_FIRST_FRAG) + printf("(B)"); + + if ((chunkDescPtr->chunkFlg & SCTP_DATA_LAST_FRAG) + == SCTP_DATA_LAST_FRAG) + printf("(E)"); + + if( ((chunkDescPtr->chunkFlg & SCTP_DATA_UNORDERED) + == SCTP_DATA_UNORDERED) + || + ((chunkDescPtr->chunkFlg & SCTP_DATA_FIRST_FRAG) + == SCTP_DATA_FIRST_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)); + fflush(stdout); + + if (vflag) /* if verbose output is specified */ + { /* at the command line */ + char *payloadPtr; + + printf("[Payload"); + + if (!xflag && !qflag) { + payloadPtr = (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; + + 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)); + +#if(0) /* ALC you can add code for optional params here */ + if( (init+1) < chunkEnd ) + printf(" @@@@@ UNFINISHED @@@@@@%s\n", + "Optional params present, but not printed."); +#endif + break; + } + case SCTP_INITIATION_ACK : + { + 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)); + +#if(0) /* ALC you can add code for optional params here */ + if( (init+1) < chunkEnd ) + printf(" @@@@@ UNFINISHED @@@@@@%s\n", + "Optional params present, but not printed."); +#endif + break; + } + case SCTP_SELECTIVE_ACK: + { + struct sctpSelectiveAck *sack; + struct sctpSelectiveFrag *frag; + int fragNo, tsnNo; + u_long *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)); + + + /* print gaps */ + for (frag = ( (struct sctpSelectiveFrag *) + ((struct sctpSelectiveAck *) sack+1)), + fragNo=0; + (void *)frag < nextChunk && fragNo < ntohs(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))); + + + /* 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: %u] ", tsnNo+1, + (u_int32_t)ntohl(*dupTSN)); + + break; + } + case SCTP_HEARTBEAT_REQUEST : + { + struct sctpHBsender *hb; + + hb=(struct sctpHBsender*)chunkDescPtr; + + printf("[HB REQ] "); + + break; + } + case SCTP_HEARTBEAT_ACK : + printf("[HB ACK] "); + break; + case SCTP_ABORT_ASSOCIATION : + printf("[ABORT] "); + break; + case SCTP_SHUTDOWN : + printf("[SHUTDOWN] "); + break; + case SCTP_SHUTDOWN_ACK : + printf("[SHUTDOWN ACK] "); + break; + case SCTP_OPERATION_ERR : + printf("[OP ERR] "); + break; + case SCTP_COOKIE_ECHO : + printf("[COOKIE ECHO] "); + break; + case SCTP_COOKIE_ACK : + printf("[COOKIE ACK] "); + break; + case SCTP_ECN_ECHO : + printf("[ECN ECHO] "); + break; + case SCTP_ECN_CWR : + printf("[ECN CWR] "); + break; + case SCTP_SHUTDOWN_COMPLETE : + printf("[SHUTDOWN COMPLETE] "); + break; + case SCTP_FORWARD_CUM_TSN : + printf("[FOR CUM TSN] "); + break; + case SCTP_RELIABLE_CNTL : + printf("[REL CTRL] "); + break; + case SCTP_RELIABLE_CNTL_ACK : + printf("[REL CTRL ACK] "); + break; + default : + printf("[Unknown chunk type: 0x%x]", chunkDescPtr->chunkID); + return; + } + } +} |