* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+/* \summary: White Board printer */
+
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"
-#include "interface.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
-static const char tstr[] = "[|wb]";
-
-/* XXX need to add byte-swapping macros! */
-/* XXX - you mean like the ones in "extract.h"? */
+#if 0
/*
* Largest packet size. Everything should fit within this space.
* For instance, multiline objects are sent piecewise.
*/
#define MAXFRAMESIZE 1024
+#endif
/*
* 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_ROUNDUP(x) roundup2(x, DOP_ALIGN)
#define DOP_NEXT(d)\
- ((struct dophdr *)((u_char *)(d) + \
- DOP_ROUNDUP(EXTRACT_16BITS(&(d)->dh_len) + sizeof(*(d)))))
+ ((const struct dophdr *)((const u_char *)(d) + \
+ DOP_ROUNDUP(GET_BE_U_2((d)->dh_len) + sizeof(*(d)))))
/*
* Format of the whiteboard packet header.
* The transport level header.
*/
struct pkt_hdr {
- uint32_t ph_src; /* site id of source */
- uint32_t ph_ts; /* time stamp (for skew computation) */
- uint16_t ph_version; /* version number */
- u_char ph_type; /* message type */
- u_char ph_flags; /* message flags */
+ nd_uint32_t ph_src; /* site id of source */
+ nd_uint32_t ph_ts; /* time stamp (for skew computation) */
+ nd_uint16_t ph_version; /* version number */
+ nd_uint8_t ph_type; /* message type */
+ nd_uint8_t ph_flags; /* message flags */
};
/* Packet types */
#define PT_PREQ 5 /* page vector request */
#define PT_PREP 7 /* page vector reply */
+#if 0
#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 */
+#endif
struct PageID {
- uint32_t p_sid; /* session id of initiator */
- uint32_t p_uid; /* page number */
+ nd_uint32_t p_sid; /* session id of initiator */
+ nd_uint32_t p_uid; /* page number */
};
struct dophdr {
- uint32_t dh_ts; /* sender's timestamp */
- uint16_t dh_len; /* body length */
- u_char dh_flags;
- u_char dh_type; /* body type */
+ nd_uint32_t dh_ts; /* sender's timestamp */
+ nd_uint16_t dh_len; /* body length */
+ nd_uint8_t dh_flags;
+ nd_uint8_t dh_type; /* body type */
/* body follows */
};
/*
#define DT_REF 13
#define DT_SKIP 14
#define DT_HOLE 15
-#define DT_MAXTYPE 15
+static const struct tok dop_str[] = {
+ { DT_RECT, "RECT" },
+ { DT_LINE, "LINE" },
+ { DT_ML, "ML" },
+ { DT_DEL, "DEL" },
+ { DT_XFORM, "XFORM" },
+ { DT_ELL, "ELL" },
+ { DT_CHAR, "CHAR" },
+ { DT_STR, "STR" },
+ { DT_NOP, "NOP" },
+ { DT_PSCODE, "PSCODE" },
+ { DT_PSCOMP, "PSCOMP" },
+ { DT_REF, "REF" },
+ { DT_SKIP, "SKIP" },
+ { DT_HOLE, "HOLE" },
+ { 0, NULL }
+};
/*
* A drawing operation.
*/
struct pkt_dop {
struct PageID pd_page; /* page that operations apply to */
- uint32_t pd_sseq; /* start sequence number */
- uint32_t pd_eseq; /* end sequence number */
+ nd_uint32_t pd_sseq; /* start sequence number */
+ nd_uint32_t pd_eseq; /* end sequence number */
/* drawing ops follow */
};
* A repair request.
*/
struct pkt_rreq {
- uint32_t pr_id; /* source id of drawops to be repaired */
- struct PageID pr_page; /* page of drawops */
- uint32_t pr_sseq; /* start seqno */
- uint32_t pr_eseq; /* end seqno */
+ nd_uint32_t pr_id; /* source id of drawops to be repaired */
+ struct PageID pr_page; /* page of drawops */
+ nd_uint32_t pr_sseq; /* start seqno */
+ nd_uint32_t pr_eseq; /* end seqno */
};
/*
* A repair reply.
*/
struct pkt_rrep {
- uint32_t pr_id; /* original site id of ops */
+ nd_uint32_t pr_id; /* original site id of ops */
struct pkt_dop pr_dop;
/* drawing ops follow */
};
struct id_off {
- uint32_t id;
- uint32_t off;
+ nd_uint32_t id;
+ nd_uint32_t off;
};
struct pgstate {
- uint32_t slot;
+ nd_uint32_t slot;
struct PageID page;
- uint16_t nid;
- uint16_t rsvd;
+ nd_uint16_t nid;
+ nd_uint16_t rsvd;
/* seqptr's */
};
* An announcement packet.
*/
struct pkt_id {
- uint32_t pi_mslot;
+ nd_uint32_t pi_mslot;
struct PageID pi_mpage; /* current page */
struct pgstate pi_ps;
/* seqptr's */
struct pkt_preq {
struct PageID pp_page;
- uint32_t pp_low;
- uint32_t pp_high;
+ nd_uint32_t pp_low;
+ nd_uint32_t pp_high;
};
struct pkt_prep {
- uint32_t pp_n; /* size of pageid array */
+ nd_uint32_t pp_n; /* size of pageid array */
/* pgstate's follow */
};
wb_id(netdissect_options *ndo,
const struct pkt_id *id, u_int len)
{
- int i;
- const char *cp;
+ u_int i;
+ const u_char *sitename;
const struct id_off *io;
char c;
- int nid;
+ u_int nid;
- ND_PRINT((ndo, " wb-id:"));
- if (len < sizeof(*id) || !ND_TTEST(*id))
+ ND_PRINT(" wb-id:");
+ if (len < sizeof(*id))
return (-1);
len -= sizeof(*id);
- ND_PRINT((ndo, " %u/%s:%u (max %u/%s:%u) ",
- EXTRACT_32BITS(&id->pi_ps.slot),
- ipaddr_string(ndo, &id->pi_ps.page.p_sid),
- EXTRACT_32BITS(&id->pi_ps.page.p_uid),
- EXTRACT_32BITS(&id->pi_mslot),
- ipaddr_string(ndo, &id->pi_mpage.p_sid),
- EXTRACT_32BITS(&id->pi_mpage.p_uid)));
-
- nid = EXTRACT_16BITS(&id->pi_ps.nid);
+ ND_PRINT(" %u/%s:%u (max %u/%s:%u) ",
+ GET_BE_U_4(id->pi_ps.slot),
+ GET_IPADDR_STRING(id->pi_ps.page.p_sid),
+ GET_BE_U_4(id->pi_ps.page.p_uid),
+ GET_BE_U_4(id->pi_mslot),
+ GET_IPADDR_STRING(id->pi_mpage.p_sid),
+ GET_BE_U_4(id->pi_mpage.p_uid));
+ /* now the rest of the fixed-size part of struct pkt_id */
+ ND_TCHECK_SIZE(id);
+
+ nid = GET_BE_U_2(id->pi_ps.nid);
+ if (len < sizeof(*io) * nid)
+ return (-1);
len -= sizeof(*io) * nid;
- io = (struct id_off *)(id + 1);
- cp = (char *)(io + nid);
- if (ND_TTEST2(cp, len)) {
- ND_PRINT((ndo, "\""));
- fn_print(ndo, (u_char *)cp, (u_char *)cp + len);
- ND_PRINT((ndo, "\""));
- }
+ io = (const struct id_off *)(id + 1);
+ sitename = (const u_char *)(io + nid);
c = '<';
- for (i = 0; i < nid && ND_TTEST(*io); ++io, ++i) {
- ND_PRINT((ndo, "%c%s:%u",
- c, ipaddr_string(ndo, &io->id), EXTRACT_32BITS(&io->off)));
+ for (i = 0; i < nid; ++io, ++i) {
+ ND_PRINT("%c%s:%u",
+ c, GET_IPADDR_STRING(io->id), GET_BE_U_4(io->off));
c = ',';
}
- if (i >= nid) {
- ND_PRINT((ndo, ">"));
- return (0);
- }
- return (-1);
+ ND_PRINT("> \"");
+ nd_printjnp(ndo, sitename, len);
+ ND_PRINT("\"");
+ return (0);
}
static int
wb_rreq(netdissect_options *ndo,
const struct pkt_rreq *rreq, u_int len)
{
- ND_PRINT((ndo, " wb-rreq:"));
- if (len < sizeof(*rreq) || !ND_TTEST(*rreq))
+ ND_PRINT(" wb-rreq:");
+ if (len < sizeof(*rreq))
return (-1);
- ND_PRINT((ndo, " please repair %s %s:%u<%u:%u>",
- ipaddr_string(ndo, &rreq->pr_id),
- ipaddr_string(ndo, &rreq->pr_page.p_sid),
- EXTRACT_32BITS(&rreq->pr_page.p_uid),
- EXTRACT_32BITS(&rreq->pr_sseq),
- EXTRACT_32BITS(&rreq->pr_eseq)));
+ ND_PRINT(" please repair %s %s:%u<%u:%u>",
+ GET_IPADDR_STRING(rreq->pr_id),
+ GET_IPADDR_STRING(rreq->pr_page.p_sid),
+ GET_BE_U_4(rreq->pr_page.p_uid),
+ GET_BE_U_4(rreq->pr_sseq),
+ GET_BE_U_4(rreq->pr_eseq));
return (0);
}
wb_preq(netdissect_options *ndo,
const struct pkt_preq *preq, u_int len)
{
- ND_PRINT((ndo, " wb-preq:"));
- if (len < sizeof(*preq) || !ND_TTEST(*preq))
+ ND_PRINT(" wb-preq:");
+ if (len < sizeof(*preq))
return (-1);
- ND_PRINT((ndo, " need %u/%s:%u",
- EXTRACT_32BITS(&preq->pp_low),
- ipaddr_string(ndo, &preq->pp_page.p_sid),
- EXTRACT_32BITS(&preq->pp_page.p_uid)));
+ ND_PRINT(" need %u/%s:%u",
+ GET_BE_U_4(preq->pp_low),
+ GET_IPADDR_STRING(preq->pp_page.p_sid),
+ GET_BE_U_4(preq->pp_page.p_uid));
+ /* now the rest of the fixed-size part of struct pkt_req */
+ ND_TCHECK_SIZE(preq);
return (0);
}
wb_prep(netdissect_options *ndo,
const struct pkt_prep *prep, u_int len)
{
- int n;
+ u_int n;
const struct pgstate *ps;
- const u_char *ep = ndo->ndo_snapend;
- ND_PRINT((ndo, " wb-prep:"));
- if (len < sizeof(*prep)) {
+ ND_PRINT(" wb-prep:");
+ if (len < sizeof(*prep))
return (-1);
- }
- n = EXTRACT_32BITS(&prep->pp_n);
+ n = GET_BE_U_4(prep->pp_n);
ps = (const struct pgstate *)(prep + 1);
- while (--n >= 0 && ND_TTEST(*ps)) {
+ while (n != 0) {
const struct id_off *io, *ie;
char c = '<';
- ND_PRINT((ndo, " %u/%s:%u",
- EXTRACT_32BITS(&ps->slot),
- ipaddr_string(ndo, &ps->page.p_sid),
- EXTRACT_32BITS(&ps->page.p_uid)));
- io = (struct id_off *)(ps + 1);
- for (ie = io + ps->nid; io < ie && ND_TTEST(*io); ++io) {
- ND_PRINT((ndo, "%c%s:%u", c, ipaddr_string(ndo, &io->id),
- EXTRACT_32BITS(&io->off)));
+ ND_PRINT(" %u/%s:%u",
+ GET_BE_U_4(ps->slot),
+ GET_IPADDR_STRING(ps->page.p_sid),
+ GET_BE_U_4(ps->page.p_uid));
+ /* now the rest of the fixed-size part of struct pgstate */
+ ND_TCHECK_SIZE(ps);
+ io = (const struct id_off *)(ps + 1);
+ for (ie = io + GET_U_1(ps->nid); io < ie; ++io) {
+ ND_PRINT("%c%s:%u", c, GET_IPADDR_STRING(io->id),
+ GET_BE_U_4(io->off));
c = ',';
}
- ND_PRINT((ndo, ">"));
- ps = (struct pgstate *)io;
+ ND_PRINT(">");
+ ps = (const struct pgstate *)io;
+ n--;
}
- return ((u_char *)ps <= ep? 0 : -1);
+ return 0;
}
-
-static const char *dopstr[] = {
- "dop-0!",
- "dop-1!",
- "RECT",
- "LINE",
- "ML",
- "DEL",
- "XFORM",
- "ELL",
- "CHAR",
- "STR",
- "NOP",
- "PSCODE",
- "PSCOMP",
- "REF",
- "SKIP",
- "HOLE",
-};
-
-static int
+static void
wb_dops(netdissect_options *ndo, const struct pkt_dop *dop,
uint32_t ss, uint32_t es)
{
const struct dophdr *dh = (const struct dophdr *)((const u_char *)dop + sizeof(*dop));
- ND_PRINT((ndo, " <"));
+ ND_PRINT(" <");
for ( ; ss <= es; ++ss) {
- int t;
-
- if (!ND_TTEST(*dh)) {
- ND_PRINT((ndo, "%s", tstr));
- break;
- }
- t = dh->dh_type;
-
- if (t > DT_MAXTYPE)
- ND_PRINT((ndo, " dop-%d!", t));
- else {
- ND_PRINT((ndo, " %s", dopstr[t]));
- if (t == DT_SKIP || t == DT_HOLE) {
- uint32_t ts = EXTRACT_32BITS(&dh->dh_ts);
- ND_PRINT((ndo, "%d", ts - ss + 1));
- if (ss > ts || ts > es) {
- ND_PRINT((ndo, "[|]"));
- if (ts < ss)
- return (0);
- }
- ss = ts;
+ u_int t;
+
+ t = GET_U_1(dh->dh_type);
+
+ ND_PRINT(" %s", tok2str(dop_str, "dop-%u!", t));
+ if (t == DT_SKIP || t == DT_HOLE) {
+ uint32_t ts = GET_BE_U_4(dh->dh_ts);
+ ND_PRINT("%u", ts - ss + 1);
+ if (ss > ts || ts > es) {
+ ND_PRINT("[|]");
+ if (ts < ss)
+ return;
}
+ ss = ts;
}
dh = DOP_NEXT(dh);
}
- ND_PRINT((ndo, " >"));
- return (0);
+ ND_PRINT(" >");
}
static int
{
const struct pkt_dop *dop = &rrep->pr_dop;
- ND_PRINT((ndo, " wb-rrep:"));
- if (len < sizeof(*rrep) || !ND_TTEST(*rrep))
+ ND_PRINT(" wb-rrep:");
+ if (len < sizeof(*rrep))
return (-1);
len -= sizeof(*rrep);
- ND_PRINT((ndo, " for %s %s:%u<%u:%u>",
- ipaddr_string(ndo, &rrep->pr_id),
- ipaddr_string(ndo, &dop->pd_page.p_sid),
- EXTRACT_32BITS(&dop->pd_page.p_uid),
- EXTRACT_32BITS(&dop->pd_sseq),
- EXTRACT_32BITS(&dop->pd_eseq)));
+ ND_PRINT(" for %s %s:%u<%u:%u>",
+ GET_IPADDR_STRING(rrep->pr_id),
+ GET_IPADDR_STRING(dop->pd_page.p_sid),
+ GET_BE_U_4(dop->pd_page.p_uid),
+ GET_BE_U_4(dop->pd_sseq),
+ GET_BE_U_4(dop->pd_eseq));
if (ndo->ndo_vflag)
- return (wb_dops(ndo, dop,
- EXTRACT_32BITS(&dop->pd_sseq),
- EXTRACT_32BITS(&dop->pd_eseq)));
+ wb_dops(ndo, dop,
+ GET_BE_U_4(dop->pd_sseq),
+ GET_BE_U_4(dop->pd_eseq));
return (0);
}
wb_drawop(netdissect_options *ndo,
const struct pkt_dop *dop, u_int len)
{
- ND_PRINT((ndo, " wb-dop:"));
- if (len < sizeof(*dop) || !ND_TTEST(*dop))
+ ND_PRINT(" wb-dop:");
+ if (len < sizeof(*dop))
return (-1);
len -= sizeof(*dop);
- ND_PRINT((ndo, " %s:%u<%u:%u>",
- ipaddr_string(ndo, &dop->pd_page.p_sid),
- EXTRACT_32BITS(&dop->pd_page.p_uid),
- EXTRACT_32BITS(&dop->pd_sseq),
- EXTRACT_32BITS(&dop->pd_eseq)));
+ ND_PRINT(" %s:%u<%u:%u>",
+ GET_IPADDR_STRING(dop->pd_page.p_sid),
+ GET_BE_U_4(dop->pd_page.p_uid),
+ GET_BE_U_4(dop->pd_sseq),
+ GET_BE_U_4(dop->pd_eseq));
if (ndo->ndo_vflag)
- return (wb_dops(ndo, dop,
- EXTRACT_32BITS(&dop->pd_sseq),
- EXTRACT_32BITS(&dop->pd_eseq)));
+ wb_dops(ndo, dop,
+ GET_BE_U_4(dop->pd_sseq),
+ GET_BE_U_4(dop->pd_eseq));
return (0);
}
*/
void
wb_print(netdissect_options *ndo,
- register const void *hdr, register u_int len)
+ const u_char *hdr, u_int len)
{
- register const struct pkt_hdr *ph;
+ const struct pkt_hdr *ph;
+ uint8_t type;
+ int print_result;
+ ndo->ndo_protocol = "wb";
ph = (const struct pkt_hdr *)hdr;
- if (len < sizeof(*ph) || !ND_TTEST(*ph)) {
- ND_PRINT((ndo, "%s", tstr));
- return;
- }
+ if (len < sizeof(*ph))
+ goto invalid;
+ ND_TCHECK_SIZE(ph);
len -= sizeof(*ph);
- if (ph->ph_flags)
- ND_PRINT((ndo, "*"));
- switch (ph->ph_type) {
+ if (GET_U_1(ph->ph_flags))
+ ND_PRINT("*");
+ type = GET_U_1(ph->ph_type);
+ switch (type) {
case PT_KILL:
- ND_PRINT((ndo, " wb-kill"));
+ ND_PRINT(" wb-kill");
return;
case PT_ID:
- if (wb_id(ndo, (struct pkt_id *)(ph + 1), len) >= 0)
- return;
+ print_result = wb_id(ndo, (const struct pkt_id *)(ph + 1), len);
break;
case PT_RREQ:
- if (wb_rreq(ndo, (struct pkt_rreq *)(ph + 1), len) >= 0)
- return;
+ print_result = wb_rreq(ndo, (const struct pkt_rreq *)(ph + 1), len);
break;
case PT_RREP:
- if (wb_rrep(ndo, (struct pkt_rrep *)(ph + 1), len) >= 0)
- return;
+ print_result = wb_rrep(ndo, (const struct pkt_rrep *)(ph + 1), len);
break;
case PT_DRAWOP:
- if (wb_drawop(ndo, (struct pkt_dop *)(ph + 1), len) >= 0)
- return;
+ print_result = wb_drawop(ndo, (const struct pkt_dop *)(ph + 1), len);
break;
case PT_PREQ:
- if (wb_preq(ndo, (struct pkt_preq *)(ph + 1), len) >= 0)
- return;
+ print_result = wb_preq(ndo, (const struct pkt_preq *)(ph + 1), len);
break;
case PT_PREP:
- if (wb_prep(ndo, (struct pkt_prep *)(ph + 1), len) >= 0)
- return;
+ print_result = wb_prep(ndo, (const struct pkt_prep *)(ph + 1), len);
break;
default:
- ND_PRINT((ndo, " wb-%d!", ph->ph_type));
- return;
+ ND_PRINT(" wb-%u!", type);
+ print_result = -1;
}
+ if (print_result < 0)
+ goto invalid;
+ return;
+
+invalid:
+ nd_print_invalid(ndo);
}
projects / tcpdump / blobdiff