117680Spst/* 217680Spst * Copyright (c) 1993, 1994, 1995, 1996 317680Spst * The Regents of the University of California. All rights reserved. 417680Spst * 517680Spst * Redistribution and use in source and binary forms, with or without 617680Spst * modification, are permitted provided that: (1) source code distributions 717680Spst * retain the above copyright notice and this paragraph in its entirety, (2) 817680Spst * distributions including binary code include the above copyright notice and 917680Spst * this paragraph in its entirety in the documentation or other materials 1017680Spst * provided with the distribution, and (3) all advertising materials mentioning 1117680Spst * features or use of this software display the following acknowledgement: 1217680Spst * ``This product includes software developed by the University of California, 1317680Spst * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 1417680Spst * the University nor the names of its contributors may be used to endorse 1517680Spst * or promote products derived from this software without specific prior 1617680Spst * written permission. 1717680Spst * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 1817680Spst * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 1917680Spst * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 2017680Spst */ 2117680Spst 2217680Spst#ifndef lint 23127668Sbmsstatic const char rcsid[] _U_ = 24190207Srpaulo "@(#) $Header: /tcpdump/master/tcpdump/print-wb.c,v 1.33 2004-03-24 04:06:28 guy Exp $ (LBL)"; 2517680Spst#endif 2617680Spst 2756893Sfenner#ifdef HAVE_CONFIG_H 2856893Sfenner#include "config.h" 2956893Sfenner#endif 3056893Sfenner 31127668Sbms#include <tcpdump-stdinc.h> 3217680Spst 3317680Spst#include <stdio.h> 3417680Spst 3517680Spst#include "interface.h" 3617680Spst#include "addrtoname.h" 37127668Sbms#include "extract.h" 3817680Spst 3917680Spst/* XXX need to add byte-swapping macros! */ 40127668Sbms/* XXX - you mean like the ones in "extract.h"? */ 4117680Spst 4217680Spst/* 4317680Spst * Largest packet size. Everything should fit within this space. 4417680Spst * For instance, multiline objects are sent piecewise. 4517680Spst */ 4617680Spst#define MAXFRAMESIZE 1024 4717680Spst 4817680Spst/* 4917680Spst * Multiple drawing ops can be sent in one packet. Each one starts on a 5017680Spst * an even multiple of DOP_ALIGN bytes, which must be a power of two. 5117680Spst */ 5217680Spst#define DOP_ALIGN 4 5317680Spst#define DOP_ROUNDUP(x) ((((int)(x)) + (DOP_ALIGN - 1)) & ~(DOP_ALIGN - 1)) 5417680Spst#define DOP_NEXT(d)\ 5526180Sfenner ((struct dophdr *)((u_char *)(d) + \ 56127668Sbms DOP_ROUNDUP(EXTRACT_16BITS(&(d)->dh_len) + sizeof(*(d))))) 5717680Spst 5817680Spst/* 5917680Spst * Format of the whiteboard packet header. 6017680Spst * The transport level header. 6117680Spst */ 6217680Spststruct pkt_hdr { 6317680Spst u_int32_t ph_src; /* site id of source */ 6417680Spst u_int32_t ph_ts; /* time stamp (for skew computation) */ 65127668Sbms u_int16_t ph_version; /* version number */ 6617680Spst u_char ph_type; /* message type */ 6717680Spst u_char ph_flags; /* message flags */ 6817680Spst}; 6917680Spst 7017680Spst/* Packet types */ 7117680Spst#define PT_DRAWOP 0 /* drawing operation */ 7217680Spst#define PT_ID 1 /* announcement packet */ 7317680Spst#define PT_RREQ 2 /* repair request */ 7417680Spst#define PT_RREP 3 /* repair reply */ 7517680Spst#define PT_KILL 4 /* terminate participation */ 7617680Spst#define PT_PREQ 5 /* page vector request */ 7717680Spst#define PT_PREP 7 /* page vector reply */ 7817680Spst 7998524Sfenner#ifdef PF_USER 8098524Sfenner#undef PF_USER /* {Digital,Tru64} UNIX define this, alas */ 8198524Sfenner#endif 8298524Sfenner 8317680Spst/* flags */ 8417680Spst#define PF_USER 0x01 /* hint that packet has interactive data */ 8517680Spst#define PF_VIS 0x02 /* only visible ops wanted */ 8617680Spst 8717680Spststruct PageID { 8817680Spst u_int32_t p_sid; /* session id of initiator */ 8917680Spst u_int32_t p_uid; /* page number */ 9017680Spst}; 9117680Spst 9217680Spststruct dophdr { 9317680Spst u_int32_t dh_ts; /* sender's timestamp */ 94127668Sbms u_int16_t dh_len; /* body length */ 9517680Spst u_char dh_flags; 9617680Spst u_char dh_type; /* body type */ 9717680Spst /* body follows */ 9817680Spst}; 9917680Spst/* 10017680Spst * Drawing op sub-types. 10117680Spst */ 10217680Spst#define DT_RECT 2 10317680Spst#define DT_LINE 3 10417680Spst#define DT_ML 4 10517680Spst#define DT_DEL 5 10617680Spst#define DT_XFORM 6 10717680Spst#define DT_ELL 7 10817680Spst#define DT_CHAR 8 10917680Spst#define DT_STR 9 11017680Spst#define DT_NOP 10 11117680Spst#define DT_PSCODE 11 11217680Spst#define DT_PSCOMP 12 11317680Spst#define DT_REF 13 11417680Spst#define DT_SKIP 14 11517680Spst#define DT_HOLE 15 11617680Spst#define DT_MAXTYPE 15 11717680Spst 11817680Spst/* 11917680Spst * A drawing operation. 12017680Spst */ 12117680Spststruct pkt_dop { 12217680Spst struct PageID pd_page; /* page that operations apply to */ 12317680Spst u_int32_t pd_sseq; /* start sequence number */ 12417680Spst u_int32_t pd_eseq; /* end sequence number */ 12517680Spst /* drawing ops follow */ 12617680Spst}; 12717680Spst 12817680Spst/* 12917680Spst * A repair request. 13017680Spst */ 13117680Spststruct pkt_rreq { 13217680Spst u_int32_t pr_id; /* source id of drawops to be repaired */ 13317680Spst struct PageID pr_page; /* page of drawops */ 13417680Spst u_int32_t pr_sseq; /* start seqno */ 13526180Sfenner u_int32_t pr_eseq; /* end seqno */ 13617680Spst}; 13717680Spst 13817680Spst/* 13917680Spst * A repair reply. 14017680Spst */ 14117680Spststruct pkt_rrep { 14217680Spst u_int32_t pr_id; /* original site id of ops */ 14317680Spst struct pkt_dop pr_dop; 14417680Spst /* drawing ops follow */ 14517680Spst}; 14617680Spst 14717680Spststruct id_off { 14817680Spst u_int32_t id; 14917680Spst u_int32_t off; 15017680Spst}; 15117680Spst 15217680Spststruct pgstate { 15317680Spst u_int32_t slot; 15417680Spst struct PageID page; 155127668Sbms u_int16_t nid; 156127668Sbms u_int16_t rsvd; 15717680Spst /* seqptr's */ 15817680Spst}; 15917680Spst 16017680Spst/* 16117680Spst * An announcement packet. 16217680Spst */ 16317680Spststruct pkt_id { 16417680Spst u_int32_t pi_mslot; 16517680Spst struct PageID pi_mpage; /* current page */ 16617680Spst struct pgstate pi_ps; 16717680Spst /* seqptr's */ 16817680Spst /* null-terminated site name */ 16917680Spst}; 17017680Spst 17117680Spststruct pkt_preq { 17217680Spst struct PageID pp_page; 17317680Spst u_int32_t pp_low; 17417680Spst u_int32_t pp_high; 17517680Spst}; 17617680Spst 17717680Spststruct pkt_prep { 17817680Spst u_int32_t pp_n; /* size of pageid array */ 17917680Spst /* pgstate's follow */ 18017680Spst}; 18117680Spst 18217680Spststatic int 18317680Spstwb_id(const struct pkt_id *id, u_int len) 18417680Spst{ 18517680Spst int i; 18617680Spst const char *cp; 18717680Spst const struct id_off *io; 18817680Spst char c; 18917680Spst int nid; 19017680Spst 19117680Spst printf(" wb-id:"); 19239297Sfenner if (len < sizeof(*id) || (u_char *)(id + 1) > snapend) 19339297Sfenner return (-1); 19417680Spst len -= sizeof(*id); 19517680Spst 19617680Spst printf(" %u/%s:%u (max %u/%s:%u) ", 197127668Sbms EXTRACT_32BITS(&id->pi_ps.slot), 19817680Spst ipaddr_string(&id->pi_ps.page.p_sid), 199127668Sbms EXTRACT_32BITS(&id->pi_ps.page.p_uid), 200127668Sbms EXTRACT_32BITS(&id->pi_mslot), 20117680Spst ipaddr_string(&id->pi_mpage.p_sid), 202127668Sbms EXTRACT_32BITS(&id->pi_mpage.p_uid)); 20317680Spst 204127668Sbms nid = EXTRACT_16BITS(&id->pi_ps.nid); 20517680Spst len -= sizeof(*io) * nid; 20617680Spst io = (struct id_off *)(id + 1); 20717680Spst cp = (char *)(io + nid); 20817680Spst if ((u_char *)cp + len <= snapend) { 20917680Spst putchar('"'); 21017680Spst (void)fn_print((u_char *)cp, (u_char *)cp + len); 21117680Spst putchar('"'); 21217680Spst } 21317680Spst 21417680Spst c = '<'; 215127668Sbms for (i = 0; i < nid && (u_char *)(io + 1) <= snapend; ++io, ++i) { 21617680Spst printf("%c%s:%u", 217127668Sbms c, ipaddr_string(&io->id), EXTRACT_32BITS(&io->off)); 21817680Spst c = ','; 21917680Spst } 22017680Spst if (i >= nid) { 22117680Spst printf(">"); 22217680Spst return (0); 22317680Spst } 22417680Spst return (-1); 22517680Spst} 22617680Spst 22717680Spststatic int 22817680Spstwb_rreq(const struct pkt_rreq *rreq, u_int len) 22917680Spst{ 23017680Spst printf(" wb-rreq:"); 23117680Spst if (len < sizeof(*rreq) || (u_char *)(rreq + 1) > snapend) 23217680Spst return (-1); 23317680Spst 23417680Spst printf(" please repair %s %s:%u<%u:%u>", 23517680Spst ipaddr_string(&rreq->pr_id), 23617680Spst ipaddr_string(&rreq->pr_page.p_sid), 237127668Sbms EXTRACT_32BITS(&rreq->pr_page.p_uid), 238127668Sbms EXTRACT_32BITS(&rreq->pr_sseq), 239127668Sbms EXTRACT_32BITS(&rreq->pr_eseq)); 24017680Spst return (0); 24117680Spst} 24217680Spst 24317680Spststatic int 24417680Spstwb_preq(const struct pkt_preq *preq, u_int len) 24517680Spst{ 24617680Spst printf(" wb-preq:"); 24717680Spst if (len < sizeof(*preq) || (u_char *)(preq + 1) > snapend) 24817680Spst return (-1); 24917680Spst 25017680Spst printf(" need %u/%s:%u", 251127668Sbms EXTRACT_32BITS(&preq->pp_low), 25217680Spst ipaddr_string(&preq->pp_page.p_sid), 253127668Sbms EXTRACT_32BITS(&preq->pp_page.p_uid)); 25417680Spst return (0); 25517680Spst} 25617680Spst 25717680Spststatic int 25817680Spstwb_prep(const struct pkt_prep *prep, u_int len) 25917680Spst{ 26017680Spst int n; 26126180Sfenner const struct pgstate *ps; 26226180Sfenner const u_char *ep = snapend; 26317680Spst 26417680Spst printf(" wb-prep:"); 26517680Spst if (len < sizeof(*prep)) { 26617680Spst return (-1); 26717680Spst } 268127668Sbms n = EXTRACT_32BITS(&prep->pp_n); 26926180Sfenner ps = (const struct pgstate *)(prep + 1); 270127668Sbms while (--n >= 0 && (u_char *)(ps + 1) <= ep) { 27117680Spst const struct id_off *io, *ie; 27217680Spst char c = '<'; 27317680Spst 27417680Spst printf(" %u/%s:%u", 275127668Sbms EXTRACT_32BITS(&ps->slot), 27617680Spst ipaddr_string(&ps->page.p_sid), 277127668Sbms EXTRACT_32BITS(&ps->page.p_uid)); 27826180Sfenner io = (struct id_off *)(ps + 1); 279127668Sbms for (ie = io + ps->nid; io < ie && (u_char *)(io + 1) <= ep; ++io) { 28017680Spst printf("%c%s:%u", c, ipaddr_string(&io->id), 281127668Sbms EXTRACT_32BITS(&io->off)); 28217680Spst c = ','; 28317680Spst } 28417680Spst printf(">"); 28526180Sfenner ps = (struct pgstate *)io; 28617680Spst } 28726180Sfenner return ((u_char *)ps <= ep? 0 : -1); 28817680Spst} 28917680Spst 29017680Spst 291127668Sbmsconst char *dopstr[] = { 29217680Spst "dop-0!", 29317680Spst "dop-1!", 29417680Spst "RECT", 29517680Spst "LINE", 29617680Spst "ML", 29717680Spst "DEL", 29817680Spst "XFORM", 29917680Spst "ELL", 30017680Spst "CHAR", 30117680Spst "STR", 30217680Spst "NOP", 30317680Spst "PSCODE", 30417680Spst "PSCOMP", 30517680Spst "REF", 30617680Spst "SKIP", 30717680Spst "HOLE", 30817680Spst}; 30917680Spst 31017680Spststatic int 31117680Spstwb_dops(const struct dophdr *dh, u_int32_t ss, u_int32_t es) 31217680Spst{ 31317680Spst printf(" <"); 31417680Spst for ( ; ss <= es; ++ss) { 31517680Spst register int t = dh->dh_type; 31617680Spst 31717680Spst if (t > DT_MAXTYPE) 31817680Spst printf(" dop-%d!", t); 31917680Spst else { 32017680Spst printf(" %s", dopstr[t]); 32117680Spst if (t == DT_SKIP || t == DT_HOLE) { 322127668Sbms u_int32_t ts = EXTRACT_32BITS(&dh->dh_ts); 32317680Spst printf("%d", ts - ss + 1); 32417680Spst if (ss > ts || ts > es) { 32517680Spst printf("[|]"); 32617680Spst if (ts < ss) 32717680Spst return (0); 32817680Spst } 32917680Spst ss = ts; 33017680Spst } 33117680Spst } 33217680Spst dh = DOP_NEXT(dh); 33326180Sfenner if ((u_char *)dh > snapend) { 33417680Spst printf("[|wb]"); 33517680Spst break; 33617680Spst } 33717680Spst } 33817680Spst printf(" >"); 33917680Spst return (0); 34017680Spst} 34117680Spst 34217680Spststatic int 34317680Spstwb_rrep(const struct pkt_rrep *rrep, u_int len) 34417680Spst{ 34517680Spst const struct pkt_dop *dop = &rrep->pr_dop; 34617680Spst 34717680Spst printf(" wb-rrep:"); 34839297Sfenner if (len < sizeof(*rrep) || (u_char *)(rrep + 1) > snapend) 34939297Sfenner return (-1); 35017680Spst len -= sizeof(*rrep); 35117680Spst 35217680Spst printf(" for %s %s:%u<%u:%u>", 35317680Spst ipaddr_string(&rrep->pr_id), 35417680Spst ipaddr_string(&dop->pd_page.p_sid), 355127668Sbms EXTRACT_32BITS(&dop->pd_page.p_uid), 356127668Sbms EXTRACT_32BITS(&dop->pd_sseq), 357127668Sbms EXTRACT_32BITS(&dop->pd_eseq)); 35817680Spst 35917680Spst if (vflag) 36026180Sfenner return (wb_dops((const struct dophdr *)(dop + 1), 361127668Sbms EXTRACT_32BITS(&dop->pd_sseq), 362127668Sbms EXTRACT_32BITS(&dop->pd_eseq))); 36317680Spst return (0); 36417680Spst} 36517680Spst 36617680Spststatic int 36717680Spstwb_drawop(const struct pkt_dop *dop, u_int len) 36817680Spst{ 36917680Spst printf(" wb-dop:"); 37039297Sfenner if (len < sizeof(*dop) || (u_char *)(dop + 1) > snapend) 37139297Sfenner return (-1); 37217680Spst len -= sizeof(*dop); 37317680Spst 37417680Spst printf(" %s:%u<%u:%u>", 37517680Spst ipaddr_string(&dop->pd_page.p_sid), 376127668Sbms EXTRACT_32BITS(&dop->pd_page.p_uid), 377127668Sbms EXTRACT_32BITS(&dop->pd_sseq), 378127668Sbms EXTRACT_32BITS(&dop->pd_eseq)); 37917680Spst 38017680Spst if (vflag) 38126180Sfenner return (wb_dops((const struct dophdr *)(dop + 1), 382127668Sbms EXTRACT_32BITS(&dop->pd_sseq), 383127668Sbms EXTRACT_32BITS(&dop->pd_eseq))); 38417680Spst return (0); 38517680Spst} 38617680Spst 38717680Spst/* 38817680Spst * Print whiteboard multicast packets. 38917680Spst */ 39017680Spstvoid 39117680Spstwb_print(register const void *hdr, register u_int len) 39217680Spst{ 39326180Sfenner register const struct pkt_hdr *ph; 39417680Spst 39526180Sfenner ph = (const struct pkt_hdr *)hdr; 39639297Sfenner if (len < sizeof(*ph) || (u_char *)(ph + 1) > snapend) { 39739297Sfenner printf("[|wb]"); 39839297Sfenner return; 39939297Sfenner } 40017680Spst len -= sizeof(*ph); 40117680Spst 40239297Sfenner if (ph->ph_flags) 40339297Sfenner printf("*"); 40439297Sfenner switch (ph->ph_type) { 40517680Spst 40639297Sfenner case PT_KILL: 40739297Sfenner printf(" wb-kill"); 40839297Sfenner return; 40917680Spst 41039297Sfenner case PT_ID: 41139297Sfenner if (wb_id((struct pkt_id *)(ph + 1), len) >= 0) 41239297Sfenner return; 41339297Sfenner break; 41417680Spst 41539297Sfenner case PT_RREQ: 41639297Sfenner if (wb_rreq((struct pkt_rreq *)(ph + 1), len) >= 0) 41739297Sfenner return; 41839297Sfenner break; 41917680Spst 42039297Sfenner case PT_RREP: 42139297Sfenner if (wb_rrep((struct pkt_rrep *)(ph + 1), len) >= 0) 42239297Sfenner return; 42339297Sfenner break; 42417680Spst 42539297Sfenner case PT_DRAWOP: 42639297Sfenner if (wb_drawop((struct pkt_dop *)(ph + 1), len) >= 0) 42739297Sfenner return; 42839297Sfenner break; 42917680Spst 43039297Sfenner case PT_PREQ: 43139297Sfenner if (wb_preq((struct pkt_preq *)(ph + 1), len) >= 0) 43239297Sfenner return; 43339297Sfenner break; 43417680Spst 43539297Sfenner case PT_PREP: 43639297Sfenner if (wb_prep((struct pkt_prep *)(ph + 1), len) >= 0) 43717680Spst return; 43839297Sfenner break; 43939297Sfenner 44039297Sfenner default: 44139297Sfenner printf(" wb-%d!", ph->ph_type); 44239297Sfenner return; 44317680Spst } 44417680Spst} 445