The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1993, 1994, 1995, 1996 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code distributions |
| 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 8 | * distributions including binary code include the above copyright notice and |
| 9 | * this paragraph in its entirety in the documentation or other materials |
| 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| 11 | * features or use of this software display the following acknowledgement: |
| 12 | * ``This product includes software developed by the University of California, |
| 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 14 | * the University nor the names of its contributors may be used to endorse |
| 15 | * or promote products derived from this software without specific prior |
| 16 | * written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 20 | */ |
| 21 | |
| 22 | #ifndef lint |
| 23 | static const char rcsid[] _U_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 24 | "@(#) $Header: /tcpdump/master/tcpdump/print-wb.c,v 1.33 2004-03-24 04:06:28 guy Exp $ (LBL)"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include "config.h" |
| 29 | #endif |
| 30 | |
| 31 | #include <tcpdump-stdinc.h> |
| 32 | |
| 33 | #include <stdio.h> |
| 34 | |
| 35 | #include "interface.h" |
| 36 | #include "addrtoname.h" |
| 37 | #include "extract.h" |
| 38 | |
| 39 | /* XXX need to add byte-swapping macros! */ |
| 40 | /* XXX - you mean like the ones in "extract.h"? */ |
| 41 | |
| 42 | /* |
| 43 | * Largest packet size. Everything should fit within this space. |
| 44 | * For instance, multiline objects are sent piecewise. |
| 45 | */ |
| 46 | #define MAXFRAMESIZE 1024 |
| 47 | |
| 48 | /* |
| 49 | * Multiple drawing ops can be sent in one packet. Each one starts on a |
| 50 | * an even multiple of DOP_ALIGN bytes, which must be a power of two. |
| 51 | */ |
| 52 | #define DOP_ALIGN 4 |
| 53 | #define DOP_ROUNDUP(x) ((((int)(x)) + (DOP_ALIGN - 1)) & ~(DOP_ALIGN - 1)) |
| 54 | #define DOP_NEXT(d)\ |
| 55 | ((struct dophdr *)((u_char *)(d) + \ |
| 56 | DOP_ROUNDUP(EXTRACT_16BITS(&(d)->dh_len) + sizeof(*(d))))) |
| 57 | |
| 58 | /* |
| 59 | * Format of the whiteboard packet header. |
| 60 | * The transport level header. |
| 61 | */ |
| 62 | struct pkt_hdr { |
| 63 | u_int32_t ph_src; /* site id of source */ |
| 64 | u_int32_t ph_ts; /* time stamp (for skew computation) */ |
| 65 | u_int16_t ph_version; /* version number */ |
| 66 | u_char ph_type; /* message type */ |
| 67 | u_char ph_flags; /* message flags */ |
| 68 | }; |
| 69 | |
| 70 | /* Packet types */ |
| 71 | #define PT_DRAWOP 0 /* drawing operation */ |
| 72 | #define PT_ID 1 /* announcement packet */ |
| 73 | #define PT_RREQ 2 /* repair request */ |
| 74 | #define PT_RREP 3 /* repair reply */ |
| 75 | #define PT_KILL 4 /* terminate participation */ |
| 76 | #define PT_PREQ 5 /* page vector request */ |
| 77 | #define PT_PREP 7 /* page vector reply */ |
| 78 | |
| 79 | #ifdef PF_USER |
| 80 | #undef PF_USER /* {Digital,Tru64} UNIX define this, alas */ |
| 81 | #endif |
| 82 | |
| 83 | /* flags */ |
| 84 | #define PF_USER 0x01 /* hint that packet has interactive data */ |
| 85 | #define PF_VIS 0x02 /* only visible ops wanted */ |
| 86 | |
| 87 | struct PageID { |
| 88 | u_int32_t p_sid; /* session id of initiator */ |
| 89 | u_int32_t p_uid; /* page number */ |
| 90 | }; |
| 91 | |
| 92 | struct dophdr { |
| 93 | u_int32_t dh_ts; /* sender's timestamp */ |
| 94 | u_int16_t dh_len; /* body length */ |
| 95 | u_char dh_flags; |
| 96 | u_char dh_type; /* body type */ |
| 97 | /* body follows */ |
| 98 | }; |
| 99 | /* |
| 100 | * Drawing op sub-types. |
| 101 | */ |
| 102 | #define DT_RECT 2 |
| 103 | #define DT_LINE 3 |
| 104 | #define DT_ML 4 |
| 105 | #define DT_DEL 5 |
| 106 | #define DT_XFORM 6 |
| 107 | #define DT_ELL 7 |
| 108 | #define DT_CHAR 8 |
| 109 | #define DT_STR 9 |
| 110 | #define DT_NOP 10 |
| 111 | #define DT_PSCODE 11 |
| 112 | #define DT_PSCOMP 12 |
| 113 | #define DT_REF 13 |
| 114 | #define DT_SKIP 14 |
| 115 | #define DT_HOLE 15 |
| 116 | #define DT_MAXTYPE 15 |
| 117 | |
| 118 | /* |
| 119 | * A drawing operation. |
| 120 | */ |
| 121 | struct pkt_dop { |
| 122 | struct PageID pd_page; /* page that operations apply to */ |
| 123 | u_int32_t pd_sseq; /* start sequence number */ |
| 124 | u_int32_t pd_eseq; /* end sequence number */ |
| 125 | /* drawing ops follow */ |
| 126 | }; |
| 127 | |
| 128 | /* |
| 129 | * A repair request. |
| 130 | */ |
| 131 | struct pkt_rreq { |
| 132 | u_int32_t pr_id; /* source id of drawops to be repaired */ |
| 133 | struct PageID pr_page; /* page of drawops */ |
| 134 | u_int32_t pr_sseq; /* start seqno */ |
| 135 | u_int32_t pr_eseq; /* end seqno */ |
| 136 | }; |
| 137 | |
| 138 | /* |
| 139 | * A repair reply. |
| 140 | */ |
| 141 | struct pkt_rrep { |
| 142 | u_int32_t pr_id; /* original site id of ops */ |
| 143 | struct pkt_dop pr_dop; |
| 144 | /* drawing ops follow */ |
| 145 | }; |
| 146 | |
| 147 | struct id_off { |
| 148 | u_int32_t id; |
| 149 | u_int32_t off; |
| 150 | }; |
| 151 | |
| 152 | struct pgstate { |
| 153 | u_int32_t slot; |
| 154 | struct PageID page; |
| 155 | u_int16_t nid; |
| 156 | u_int16_t rsvd; |
| 157 | /* seqptr's */ |
| 158 | }; |
| 159 | |
| 160 | /* |
| 161 | * An announcement packet. |
| 162 | */ |
| 163 | struct pkt_id { |
| 164 | u_int32_t pi_mslot; |
| 165 | struct PageID pi_mpage; /* current page */ |
| 166 | struct pgstate pi_ps; |
| 167 | /* seqptr's */ |
| 168 | /* null-terminated site name */ |
| 169 | }; |
| 170 | |
| 171 | struct pkt_preq { |
| 172 | struct PageID pp_page; |
| 173 | u_int32_t pp_low; |
| 174 | u_int32_t pp_high; |
| 175 | }; |
| 176 | |
| 177 | struct pkt_prep { |
| 178 | u_int32_t pp_n; /* size of pageid array */ |
| 179 | /* pgstate's follow */ |
| 180 | }; |
| 181 | |
| 182 | static int |
| 183 | wb_id(const struct pkt_id *id, u_int len) |
| 184 | { |
| 185 | int i; |
| 186 | const char *cp; |
| 187 | const struct id_off *io; |
| 188 | char c; |
| 189 | int nid; |
| 190 | |
| 191 | printf(" wb-id:"); |
| 192 | if (len < sizeof(*id) || (u_char *)(id + 1) > snapend) |
| 193 | return (-1); |
| 194 | len -= sizeof(*id); |
| 195 | |
| 196 | printf(" %u/%s:%u (max %u/%s:%u) ", |
| 197 | EXTRACT_32BITS(&id->pi_ps.slot), |
| 198 | ipaddr_string(&id->pi_ps.page.p_sid), |
| 199 | EXTRACT_32BITS(&id->pi_ps.page.p_uid), |
| 200 | EXTRACT_32BITS(&id->pi_mslot), |
| 201 | ipaddr_string(&id->pi_mpage.p_sid), |
| 202 | EXTRACT_32BITS(&id->pi_mpage.p_uid)); |
| 203 | |
| 204 | nid = EXTRACT_16BITS(&id->pi_ps.nid); |
| 205 | len -= sizeof(*io) * nid; |
| 206 | io = (struct id_off *)(id + 1); |
| 207 | cp = (char *)(io + nid); |
| 208 | if ((u_char *)cp + len <= snapend) { |
| 209 | putchar('"'); |
| 210 | (void)fn_print((u_char *)cp, (u_char *)cp + len); |
| 211 | putchar('"'); |
| 212 | } |
| 213 | |
| 214 | c = '<'; |
| 215 | for (i = 0; i < nid && (u_char *)(io + 1) <= snapend; ++io, ++i) { |
| 216 | printf("%c%s:%u", |
| 217 | c, ipaddr_string(&io->id), EXTRACT_32BITS(&io->off)); |
| 218 | c = ','; |
| 219 | } |
| 220 | if (i >= nid) { |
| 221 | printf(">"); |
| 222 | return (0); |
| 223 | } |
| 224 | return (-1); |
| 225 | } |
| 226 | |
| 227 | static int |
| 228 | wb_rreq(const struct pkt_rreq *rreq, u_int len) |
| 229 | { |
| 230 | printf(" wb-rreq:"); |
| 231 | if (len < sizeof(*rreq) || (u_char *)(rreq + 1) > snapend) |
| 232 | return (-1); |
| 233 | |
| 234 | printf(" please repair %s %s:%u<%u:%u>", |
| 235 | ipaddr_string(&rreq->pr_id), |
| 236 | ipaddr_string(&rreq->pr_page.p_sid), |
| 237 | EXTRACT_32BITS(&rreq->pr_page.p_uid), |
| 238 | EXTRACT_32BITS(&rreq->pr_sseq), |
| 239 | EXTRACT_32BITS(&rreq->pr_eseq)); |
| 240 | return (0); |
| 241 | } |
| 242 | |
| 243 | static int |
| 244 | wb_preq(const struct pkt_preq *preq, u_int len) |
| 245 | { |
| 246 | printf(" wb-preq:"); |
| 247 | if (len < sizeof(*preq) || (u_char *)(preq + 1) > snapend) |
| 248 | return (-1); |
| 249 | |
| 250 | printf(" need %u/%s:%u", |
| 251 | EXTRACT_32BITS(&preq->pp_low), |
| 252 | ipaddr_string(&preq->pp_page.p_sid), |
| 253 | EXTRACT_32BITS(&preq->pp_page.p_uid)); |
| 254 | return (0); |
| 255 | } |
| 256 | |
| 257 | static int |
| 258 | wb_prep(const struct pkt_prep *prep, u_int len) |
| 259 | { |
| 260 | int n; |
| 261 | const struct pgstate *ps; |
| 262 | const u_char *ep = snapend; |
| 263 | |
| 264 | printf(" wb-prep:"); |
| 265 | if (len < sizeof(*prep)) { |
| 266 | return (-1); |
| 267 | } |
| 268 | n = EXTRACT_32BITS(&prep->pp_n); |
| 269 | ps = (const struct pgstate *)(prep + 1); |
| 270 | while (--n >= 0 && (u_char *)(ps + 1) <= ep) { |
| 271 | const struct id_off *io, *ie; |
| 272 | char c = '<'; |
| 273 | |
| 274 | printf(" %u/%s:%u", |
| 275 | EXTRACT_32BITS(&ps->slot), |
| 276 | ipaddr_string(&ps->page.p_sid), |
| 277 | EXTRACT_32BITS(&ps->page.p_uid)); |
| 278 | io = (struct id_off *)(ps + 1); |
| 279 | for (ie = io + ps->nid; io < ie && (u_char *)(io + 1) <= ep; ++io) { |
| 280 | printf("%c%s:%u", c, ipaddr_string(&io->id), |
| 281 | EXTRACT_32BITS(&io->off)); |
| 282 | c = ','; |
| 283 | } |
| 284 | printf(">"); |
| 285 | ps = (struct pgstate *)io; |
| 286 | } |
| 287 | return ((u_char *)ps <= ep? 0 : -1); |
| 288 | } |
| 289 | |
| 290 | |
| 291 | const char *dopstr[] = { |
| 292 | "dop-0!", |
| 293 | "dop-1!", |
| 294 | "RECT", |
| 295 | "LINE", |
| 296 | "ML", |
| 297 | "DEL", |
| 298 | "XFORM", |
| 299 | "ELL", |
| 300 | "CHAR", |
| 301 | "STR", |
| 302 | "NOP", |
| 303 | "PSCODE", |
| 304 | "PSCOMP", |
| 305 | "REF", |
| 306 | "SKIP", |
| 307 | "HOLE", |
| 308 | }; |
| 309 | |
| 310 | static int |
| 311 | wb_dops(const struct dophdr *dh, u_int32_t ss, u_int32_t es) |
| 312 | { |
| 313 | printf(" <"); |
| 314 | for ( ; ss <= es; ++ss) { |
| 315 | register int t = dh->dh_type; |
| 316 | |
| 317 | if (t > DT_MAXTYPE) |
| 318 | printf(" dop-%d!", t); |
| 319 | else { |
| 320 | printf(" %s", dopstr[t]); |
| 321 | if (t == DT_SKIP || t == DT_HOLE) { |
| 322 | u_int32_t ts = EXTRACT_32BITS(&dh->dh_ts); |
| 323 | printf("%d", ts - ss + 1); |
| 324 | if (ss > ts || ts > es) { |
| 325 | printf("[|]"); |
| 326 | if (ts < ss) |
| 327 | return (0); |
| 328 | } |
| 329 | ss = ts; |
| 330 | } |
| 331 | } |
| 332 | dh = DOP_NEXT(dh); |
| 333 | if ((u_char *)dh > snapend) { |
| 334 | printf("[|wb]"); |
| 335 | break; |
| 336 | } |
| 337 | } |
| 338 | printf(" >"); |
| 339 | return (0); |
| 340 | } |
| 341 | |
| 342 | static int |
| 343 | wb_rrep(const struct pkt_rrep *rrep, u_int len) |
| 344 | { |
| 345 | const struct pkt_dop *dop = &rrep->pr_dop; |
| 346 | |
| 347 | printf(" wb-rrep:"); |
| 348 | if (len < sizeof(*rrep) || (u_char *)(rrep + 1) > snapend) |
| 349 | return (-1); |
| 350 | len -= sizeof(*rrep); |
| 351 | |
| 352 | printf(" for %s %s:%u<%u:%u>", |
| 353 | ipaddr_string(&rrep->pr_id), |
| 354 | ipaddr_string(&dop->pd_page.p_sid), |
| 355 | EXTRACT_32BITS(&dop->pd_page.p_uid), |
| 356 | EXTRACT_32BITS(&dop->pd_sseq), |
| 357 | EXTRACT_32BITS(&dop->pd_eseq)); |
| 358 | |
| 359 | if (vflag) |
| 360 | return (wb_dops((const struct dophdr *)(dop + 1), |
| 361 | EXTRACT_32BITS(&dop->pd_sseq), |
| 362 | EXTRACT_32BITS(&dop->pd_eseq))); |
| 363 | return (0); |
| 364 | } |
| 365 | |
| 366 | static int |
| 367 | wb_drawop(const struct pkt_dop *dop, u_int len) |
| 368 | { |
| 369 | printf(" wb-dop:"); |
| 370 | if (len < sizeof(*dop) || (u_char *)(dop + 1) > snapend) |
| 371 | return (-1); |
| 372 | len -= sizeof(*dop); |
| 373 | |
| 374 | printf(" %s:%u<%u:%u>", |
| 375 | ipaddr_string(&dop->pd_page.p_sid), |
| 376 | EXTRACT_32BITS(&dop->pd_page.p_uid), |
| 377 | EXTRACT_32BITS(&dop->pd_sseq), |
| 378 | EXTRACT_32BITS(&dop->pd_eseq)); |
| 379 | |
| 380 | if (vflag) |
| 381 | return (wb_dops((const struct dophdr *)(dop + 1), |
| 382 | EXTRACT_32BITS(&dop->pd_sseq), |
| 383 | EXTRACT_32BITS(&dop->pd_eseq))); |
| 384 | return (0); |
| 385 | } |
| 386 | |
| 387 | /* |
| 388 | * Print whiteboard multicast packets. |
| 389 | */ |
| 390 | void |
| 391 | wb_print(register const void *hdr, register u_int len) |
| 392 | { |
| 393 | register const struct pkt_hdr *ph; |
| 394 | |
| 395 | ph = (const struct pkt_hdr *)hdr; |
| 396 | if (len < sizeof(*ph) || (u_char *)(ph + 1) > snapend) { |
| 397 | printf("[|wb]"); |
| 398 | return; |
| 399 | } |
| 400 | len -= sizeof(*ph); |
| 401 | |
| 402 | if (ph->ph_flags) |
| 403 | printf("*"); |
| 404 | switch (ph->ph_type) { |
| 405 | |
| 406 | case PT_KILL: |
| 407 | printf(" wb-kill"); |
| 408 | return; |
| 409 | |
| 410 | case PT_ID: |
| 411 | if (wb_id((struct pkt_id *)(ph + 1), len) >= 0) |
| 412 | return; |
| 413 | break; |
| 414 | |
| 415 | case PT_RREQ: |
| 416 | if (wb_rreq((struct pkt_rreq *)(ph + 1), len) >= 0) |
| 417 | return; |
| 418 | break; |
| 419 | |
| 420 | case PT_RREP: |
| 421 | if (wb_rrep((struct pkt_rrep *)(ph + 1), len) >= 0) |
| 422 | return; |
| 423 | break; |
| 424 | |
| 425 | case PT_DRAWOP: |
| 426 | if (wb_drawop((struct pkt_dop *)(ph + 1), len) >= 0) |
| 427 | return; |
| 428 | break; |
| 429 | |
| 430 | case PT_PREQ: |
| 431 | if (wb_preq((struct pkt_preq *)(ph + 1), len) >= 0) |
| 432 | return; |
| 433 | break; |
| 434 | |
| 435 | case PT_PREP: |
| 436 | if (wb_prep((struct pkt_prep *)(ph + 1), len) >= 0) |
| 437 | return; |
| 438 | break; |
| 439 | |
| 440 | default: |
| 441 | printf(" wb-%d!", ph->ph_type); |
| 442 | return; |
| 443 | } |
| 444 | } |