| /* |
| * Copyright (c) 1993, 1994, 1995, 1996 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that: (1) source code distributions |
| * retain the above copyright notice and this paragraph in its entirety, (2) |
| * distributions including binary code include the above copyright notice and |
| * this paragraph in its entirety in the documentation or other materials |
| * provided with the distribution, and (3) all advertising materials mentioning |
| * features or use of this software display the following acknowledgement: |
| * ``This product includes software developed by the University of California, |
| * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| * the University nor the names of its contributors may be used to endorse |
| * or promote products derived from this software without specific prior |
| * written permission. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| #ifndef lint |
| static const char rcsid[] _U_ = |
| "@(#) $Header: /tcpdump/master/tcpdump/print-wb.c,v 1.33 2004-03-24 04:06:28 guy Exp $ (LBL)"; |
| #endif |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <tcpdump-stdinc.h> |
| |
| #include <stdio.h> |
| |
| #include "interface.h" |
| #include "addrtoname.h" |
| #include "extract.h" |
| |
| /* XXX need to add byte-swapping macros! */ |
| /* XXX - you mean like the ones in "extract.h"? */ |
| |
| /* |
| * Largest packet size. Everything should fit within this space. |
| * For instance, multiline objects are sent piecewise. |
| */ |
| #define MAXFRAMESIZE 1024 |
| |
| /* |
| * Multiple drawing ops can be sent in one packet. Each one starts on a |
| * an even multiple of DOP_ALIGN bytes, which must be a power of two. |
| */ |
| #define DOP_ALIGN 4 |
| #define DOP_ROUNDUP(x) ((((int)(x)) + (DOP_ALIGN - 1)) & ~(DOP_ALIGN - 1)) |
| #define DOP_NEXT(d)\ |
| ((struct dophdr *)((u_char *)(d) + \ |
| DOP_ROUNDUP(EXTRACT_16BITS(&(d)->dh_len) + sizeof(*(d))))) |
| |
| /* |
| * Format of the whiteboard packet header. |
| * The transport level header. |
| */ |
| struct pkt_hdr { |
| u_int32_t ph_src; /* site id of source */ |
| u_int32_t ph_ts; /* time stamp (for skew computation) */ |
| u_int16_t ph_version; /* version number */ |
| u_char ph_type; /* message type */ |
| u_char ph_flags; /* message flags */ |
| }; |
| |
| /* Packet types */ |
| #define PT_DRAWOP 0 /* drawing operation */ |
| #define PT_ID 1 /* announcement packet */ |
| #define PT_RREQ 2 /* repair request */ |
| #define PT_RREP 3 /* repair reply */ |
| #define PT_KILL 4 /* terminate participation */ |
| #define PT_PREQ 5 /* page vector request */ |
| #define PT_PREP 7 /* page vector reply */ |
| |
| #ifdef PF_USER |
| #undef PF_USER /* {Digital,Tru64} UNIX define this, alas */ |
| #endif |
| |
| /* flags */ |
| #define PF_USER 0x01 /* hint that packet has interactive data */ |
| #define PF_VIS 0x02 /* only visible ops wanted */ |
| |
| struct PageID { |
| u_int32_t p_sid; /* session id of initiator */ |
| u_int32_t p_uid; /* page number */ |
| }; |
| |
| struct dophdr { |
| u_int32_t dh_ts; /* sender's timestamp */ |
| u_int16_t dh_len; /* body length */ |
| u_char dh_flags; |
| u_char dh_type; /* body type */ |
| /* body follows */ |
| }; |
| /* |
| * Drawing op sub-types. |
| */ |
| #define DT_RECT 2 |
| #define DT_LINE 3 |
| #define DT_ML 4 |
| #define DT_DEL 5 |
| #define DT_XFORM 6 |
| #define DT_ELL 7 |
| #define DT_CHAR 8 |
| #define DT_STR 9 |
| #define DT_NOP 10 |
| #define DT_PSCODE 11 |
| #define DT_PSCOMP 12 |
| #define DT_REF 13 |
| #define DT_SKIP 14 |
| #define DT_HOLE 15 |
| #define DT_MAXTYPE 15 |
| |
| /* |
| * A drawing operation. |
| */ |
| struct pkt_dop { |
| struct PageID pd_page; /* page that operations apply to */ |
| u_int32_t pd_sseq; /* start sequence number */ |
| u_int32_t pd_eseq; /* end sequence number */ |
| /* drawing ops follow */ |
| }; |
| |
| /* |
| * A repair request. |
| */ |
| struct pkt_rreq { |
| u_int32_t pr_id; /* source id of drawops to be repaired */ |
| struct PageID pr_page; /* page of drawops */ |
| u_int32_t pr_sseq; /* start seqno */ |
| u_int32_t pr_eseq; /* end seqno */ |
| }; |
| |
| /* |
| * A repair reply. |
| */ |
| struct pkt_rrep { |
| u_int32_t pr_id; /* original site id of ops */ |
| struct pkt_dop pr_dop; |
| /* drawing ops follow */ |
| }; |
| |
| struct id_off { |
| u_int32_t id; |
| u_int32_t off; |
| }; |
| |
| struct pgstate { |
| u_int32_t slot; |
| struct PageID page; |
| u_int16_t nid; |
| u_int16_t rsvd; |
| /* seqptr's */ |
| }; |
| |
| /* |
| * An announcement packet. |
| */ |
| struct pkt_id { |
| u_int32_t pi_mslot; |
| struct PageID pi_mpage; /* current page */ |
| struct pgstate pi_ps; |
| /* seqptr's */ |
| /* null-terminated site name */ |
| }; |
| |
| struct pkt_preq { |
| struct PageID pp_page; |
| u_int32_t pp_low; |
| u_int32_t pp_high; |
| }; |
| |
| struct pkt_prep { |
| u_int32_t pp_n; /* size of pageid array */ |
| /* pgstate's follow */ |
| }; |
| |
| static int |
| wb_id(const struct pkt_id *id, u_int len) |
| { |
| int i; |
| const char *cp; |
| const struct id_off *io; |
| char c; |
| int nid; |
| |
| printf(" wb-id:"); |
| if (len < sizeof(*id) || (u_char *)(id + 1) > snapend) |
| return (-1); |
| len -= sizeof(*id); |
| |
| printf(" %u/%s:%u (max %u/%s:%u) ", |
| EXTRACT_32BITS(&id->pi_ps.slot), |
| ipaddr_string(&id->pi_ps.page.p_sid), |
| EXTRACT_32BITS(&id->pi_ps.page.p_uid), |
| EXTRACT_32BITS(&id->pi_mslot), |
| ipaddr_string(&id->pi_mpage.p_sid), |
| EXTRACT_32BITS(&id->pi_mpage.p_uid)); |
| |
| nid = EXTRACT_16BITS(&id->pi_ps.nid); |
| len -= sizeof(*io) * nid; |
| io = (struct id_off *)(id + 1); |
| cp = (char *)(io + nid); |
| if ((u_char *)cp + len <= snapend) { |
| putchar('"'); |
| (void)fn_print((u_char *)cp, (u_char *)cp + len); |
| putchar('"'); |
| } |
| |
| c = '<'; |
| for (i = 0; i < nid && (u_char *)(io + 1) <= snapend; ++io, ++i) { |
| printf("%c%s:%u", |
| c, ipaddr_string(&io->id), EXTRACT_32BITS(&io->off)); |
| c = ','; |
| } |
| if (i >= nid) { |
| printf(">"); |
| return (0); |
| } |
| return (-1); |
| } |
| |
| static int |
| wb_rreq(const struct pkt_rreq *rreq, u_int len) |
| { |
| printf(" wb-rreq:"); |
| if (len < sizeof(*rreq) || (u_char *)(rreq + 1) > snapend) |
| return (-1); |
| |
| printf(" please repair %s %s:%u<%u:%u>", |
| ipaddr_string(&rreq->pr_id), |
| ipaddr_string(&rreq->pr_page.p_sid), |
| EXTRACT_32BITS(&rreq->pr_page.p_uid), |
| EXTRACT_32BITS(&rreq->pr_sseq), |
| EXTRACT_32BITS(&rreq->pr_eseq)); |
| return (0); |
| } |
| |
| static int |
| wb_preq(const struct pkt_preq *preq, u_int len) |
| { |
| printf(" wb-preq:"); |
| if (len < sizeof(*preq) || (u_char *)(preq + 1) > snapend) |
| return (-1); |
| |
| printf(" need %u/%s:%u", |
| EXTRACT_32BITS(&preq->pp_low), |
| ipaddr_string(&preq->pp_page.p_sid), |
| EXTRACT_32BITS(&preq->pp_page.p_uid)); |
| return (0); |
| } |
| |
| static int |
| wb_prep(const struct pkt_prep *prep, u_int len) |
| { |
| int n; |
| const struct pgstate *ps; |
| const u_char *ep = snapend; |
| |
| printf(" wb-prep:"); |
| if (len < sizeof(*prep)) { |
| return (-1); |
| } |
| n = EXTRACT_32BITS(&prep->pp_n); |
| ps = (const struct pgstate *)(prep + 1); |
| while (--n >= 0 && (u_char *)(ps + 1) <= ep) { |
| const struct id_off *io, *ie; |
| char c = '<'; |
| |
| printf(" %u/%s:%u", |
| EXTRACT_32BITS(&ps->slot), |
| ipaddr_string(&ps->page.p_sid), |
| EXTRACT_32BITS(&ps->page.p_uid)); |
| io = (struct id_off *)(ps + 1); |
| for (ie = io + ps->nid; io < ie && (u_char *)(io + 1) <= ep; ++io) { |
| printf("%c%s:%u", c, ipaddr_string(&io->id), |
| EXTRACT_32BITS(&io->off)); |
| c = ','; |
| } |
| printf(">"); |
| ps = (struct pgstate *)io; |
| } |
| return ((u_char *)ps <= ep? 0 : -1); |
| } |
| |
| |
| const char *dopstr[] = { |
| "dop-0!", |
| "dop-1!", |
| "RECT", |
| "LINE", |
| "ML", |
| "DEL", |
| "XFORM", |
| "ELL", |
| "CHAR", |
| "STR", |
| "NOP", |
| "PSCODE", |
| "PSCOMP", |
| "REF", |
| "SKIP", |
| "HOLE", |
| }; |
| |
| static int |
| wb_dops(const struct dophdr *dh, u_int32_t ss, u_int32_t es) |
| { |
| printf(" <"); |
| for ( ; ss <= es; ++ss) { |
| register int t = dh->dh_type; |
| |
| if (t > DT_MAXTYPE) |
| printf(" dop-%d!", t); |
| else { |
| printf(" %s", dopstr[t]); |
| if (t == DT_SKIP || t == DT_HOLE) { |
| u_int32_t ts = EXTRACT_32BITS(&dh->dh_ts); |
| printf("%d", ts - ss + 1); |
| if (ss > ts || ts > es) { |
| printf("[|]"); |
| if (ts < ss) |
| return (0); |
| } |
| ss = ts; |
| } |
| } |
| dh = DOP_NEXT(dh); |
| if ((u_char *)dh > snapend) { |
| printf("[|wb]"); |
| break; |
| } |
| } |
| printf(" >"); |
| return (0); |
| } |
| |
| static int |
| wb_rrep(const struct pkt_rrep *rrep, u_int len) |
| { |
| const struct pkt_dop *dop = &rrep->pr_dop; |
| |
| printf(" wb-rrep:"); |
| if (len < sizeof(*rrep) || (u_char *)(rrep + 1) > snapend) |
| return (-1); |
| len -= sizeof(*rrep); |
| |
| printf(" for %s %s:%u<%u:%u>", |
| ipaddr_string(&rrep->pr_id), |
| ipaddr_string(&dop->pd_page.p_sid), |
| EXTRACT_32BITS(&dop->pd_page.p_uid), |
| EXTRACT_32BITS(&dop->pd_sseq), |
| EXTRACT_32BITS(&dop->pd_eseq)); |
| |
| if (vflag) |
| return (wb_dops((const struct dophdr *)(dop + 1), |
| EXTRACT_32BITS(&dop->pd_sseq), |
| EXTRACT_32BITS(&dop->pd_eseq))); |
| return (0); |
| } |
| |
| static int |
| wb_drawop(const struct pkt_dop *dop, u_int len) |
| { |
| printf(" wb-dop:"); |
| if (len < sizeof(*dop) || (u_char *)(dop + 1) > snapend) |
| return (-1); |
| len -= sizeof(*dop); |
| |
| printf(" %s:%u<%u:%u>", |
| ipaddr_string(&dop->pd_page.p_sid), |
| EXTRACT_32BITS(&dop->pd_page.p_uid), |
| EXTRACT_32BITS(&dop->pd_sseq), |
| EXTRACT_32BITS(&dop->pd_eseq)); |
| |
| if (vflag) |
| return (wb_dops((const struct dophdr *)(dop + 1), |
| EXTRACT_32BITS(&dop->pd_sseq), |
| EXTRACT_32BITS(&dop->pd_eseq))); |
| return (0); |
| } |
| |
| /* |
| * Print whiteboard multicast packets. |
| */ |
| void |
| wb_print(register const void *hdr, register u_int len) |
| { |
| register const struct pkt_hdr *ph; |
| |
| ph = (const struct pkt_hdr *)hdr; |
| if (len < sizeof(*ph) || (u_char *)(ph + 1) > snapend) { |
| printf("[|wb]"); |
| return; |
| } |
| len -= sizeof(*ph); |
| |
| if (ph->ph_flags) |
| printf("*"); |
| switch (ph->ph_type) { |
| |
| case PT_KILL: |
| printf(" wb-kill"); |
| return; |
| |
| case PT_ID: |
| if (wb_id((struct pkt_id *)(ph + 1), len) >= 0) |
| return; |
| break; |
| |
| case PT_RREQ: |
| if (wb_rreq((struct pkt_rreq *)(ph + 1), len) >= 0) |
| return; |
| break; |
| |
| case PT_RREP: |
| if (wb_rrep((struct pkt_rrep *)(ph + 1), len) >= 0) |
| return; |
| break; |
| |
| case PT_DRAWOP: |
| if (wb_drawop((struct pkt_dop *)(ph + 1), len) >= 0) |
| return; |
| break; |
| |
| case PT_PREQ: |
| if (wb_preq((struct pkt_preq *)(ph + 1), len) >= 0) |
| return; |
| break; |
| |
| case PT_PREP: |
| if (wb_prep((struct pkt_prep *)(ph + 1), len) >= 0) |
| return; |
| break; |
| |
| default: |
| printf(" wb-%d!", ph->ph_type); |
| return; |
| } |
| } |