1/* 2 * ipxcp.c - PPP IPX Control Protocol. 3 * 4 * Copyright (c) 1989 Carnegie Mellon University. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms are permitted 8 * provided that the above copyright notice and this paragraph are 9 * duplicated in all such forms and that any documentation, 10 * advertising materials, and other materials related to such 11 * distribution and use acknowledge that the software was developed 12 * by Carnegie Mellon University. The name of the 13 * University may not be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 18 */ 19 20#ifdef IPX_CHANGE 21 22#define RCSID "$Id: ipxcp.c,v 1.1.1.1 2008/10/15 03:30:13 james26_jang Exp $" 23 24/* 25 * TODO: 26 */ 27 28#include <stdio.h> 29#include <string.h> 30#include <unistd.h> 31#include <ctype.h> 32#include <sys/types.h> 33#include <sys/socket.h> 34#include <netinet/in.h> 35 36#include "pppd.h" 37#include "fsm.h" 38#include "ipxcp.h" 39#include "pathnames.h" 40#include "magic.h" 41 42static const char rcsid[] = RCSID; 43 44/* global vars */ 45ipxcp_options ipxcp_wantoptions[NUM_PPP]; /* Options that we want to request */ 46ipxcp_options ipxcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ 47ipxcp_options ipxcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ 48ipxcp_options ipxcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ 49 50#define wo (&ipxcp_wantoptions[0]) 51#define ao (&ipxcp_allowoptions[0]) 52#define go (&ipxcp_gotoptions[0]) 53#define ho (&ipxcp_hisoptions[0]) 54 55/* 56 * Callbacks for fsm code. (CI = Configuration Information) 57 */ 58static void ipxcp_resetci __P((fsm *)); /* Reset our CI */ 59static int ipxcp_cilen __P((fsm *)); /* Return length of our CI */ 60static void ipxcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */ 61static int ipxcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */ 62static int ipxcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */ 63static int ipxcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */ 64static int ipxcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ 65static void ipxcp_up __P((fsm *)); /* We're UP */ 66static void ipxcp_down __P((fsm *)); /* We're DOWN */ 67static void ipxcp_finished __P((fsm *)); /* Don't need lower layer */ 68static void ipxcp_script __P((fsm *, char *)); /* Run an up/down script */ 69 70fsm ipxcp_fsm[NUM_PPP]; /* IPXCP fsm structure */ 71 72static fsm_callbacks ipxcp_callbacks = { /* IPXCP callback routines */ 73 ipxcp_resetci, /* Reset our Configuration Information */ 74 ipxcp_cilen, /* Length of our Configuration Information */ 75 ipxcp_addci, /* Add our Configuration Information */ 76 ipxcp_ackci, /* ACK our Configuration Information */ 77 ipxcp_nakci, /* NAK our Configuration Information */ 78 ipxcp_rejci, /* Reject our Configuration Information */ 79 ipxcp_reqci, /* Request peer's Configuration Information */ 80 ipxcp_up, /* Called when fsm reaches OPENED state */ 81 ipxcp_down, /* Called when fsm leaves OPENED state */ 82 NULL, /* Called when we want the lower layer up */ 83 ipxcp_finished, /* Called when we want the lower layer down */ 84 NULL, /* Called when Protocol-Reject received */ 85 NULL, /* Retransmission is necessary */ 86 NULL, /* Called to handle protocol-specific codes */ 87 "IPXCP" /* String name of protocol */ 88}; 89 90/* 91 * Command-line options. 92 */ 93static int setipxnode __P((char **)); 94static void printipxnode __P((option_t *, 95 void (*)(void *, char *, ...), void *)); 96static int setipxname __P((char **)); 97 98static option_t ipxcp_option_list[] = { 99 { "ipx", o_bool, &ipxcp_protent.enabled_flag, 100 "Enable IPXCP (and IPX)", OPT_PRIO | 1 }, 101 { "+ipx", o_bool, &ipxcp_protent.enabled_flag, 102 "Enable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS | 1 }, 103 { "noipx", o_bool, &ipxcp_protent.enabled_flag, 104 "Disable IPXCP (and IPX)", OPT_PRIOSUB }, 105 { "-ipx", o_bool, &ipxcp_protent.enabled_flag, 106 "Disable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS }, 107 108 { "ipx-network", o_uint32, &ipxcp_wantoptions[0].our_network, 109 "Set our IPX network number", OPT_PRIO, &ipxcp_wantoptions[0].neg_nn }, 110 111 { "ipxcp-accept-network", o_bool, &ipxcp_wantoptions[0].accept_network, 112 "Accept peer IPX network number", 1, 113 &ipxcp_allowoptions[0].accept_network }, 114 115 { "ipx-node", o_special, (void *)setipxnode, 116 "Set IPX node number", OPT_A2PRINTER, (void *)printipxnode }, 117 118 { "ipxcp-accept-local", o_bool, &ipxcp_wantoptions[0].accept_local, 119 "Accept our IPX address", 1, 120 &ipxcp_allowoptions[0].accept_local }, 121 122 { "ipxcp-accept-remote", o_bool, &ipxcp_wantoptions[0].accept_remote, 123 "Accept peer's IPX address", 1, 124 &ipxcp_allowoptions[0].accept_remote }, 125 126 { "ipx-routing", o_int, &ipxcp_wantoptions[0].router, 127 "Set IPX routing proto number", OPT_PRIO, 128 &ipxcp_wantoptions[0].neg_router }, 129 130 { "ipx-router-name", o_special, setipxname, 131 "Set IPX router name", OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, 132 &ipxcp_wantoptions[0].name }, 133 134 { "ipxcp-restart", o_int, &ipxcp_fsm[0].timeouttime, 135 "Set timeout for IPXCP", OPT_PRIO }, 136 { "ipxcp-max-terminate", o_int, &ipxcp_fsm[0].maxtermtransmits, 137 "Set max #xmits for IPXCP term-reqs", OPT_PRIO }, 138 { "ipxcp-max-configure", o_int, &ipxcp_fsm[0].maxconfreqtransmits, 139 "Set max #xmits for IPXCP conf-reqs", OPT_PRIO }, 140 { "ipxcp-max-failure", o_int, &ipxcp_fsm[0].maxnakloops, 141 "Set max #conf-naks for IPXCP", OPT_PRIO }, 142 143 { NULL } 144}; 145 146/* 147 * Protocol entry points. 148 */ 149 150static void ipxcp_init __P((int)); 151static void ipxcp_open __P((int)); 152static void ipxcp_close __P((int, char *)); 153static void ipxcp_lowerup __P((int)); 154static void ipxcp_lowerdown __P((int)); 155static void ipxcp_input __P((int, u_char *, int)); 156static void ipxcp_protrej __P((int)); 157static int ipxcp_printpkt __P((u_char *, int, 158 void (*) __P((void *, char *, ...)), void *)); 159 160struct protent ipxcp_protent = { 161 PPP_IPXCP, 162 ipxcp_init, 163 ipxcp_input, 164 ipxcp_protrej, 165 ipxcp_lowerup, 166 ipxcp_lowerdown, 167 ipxcp_open, 168 ipxcp_close, 169 ipxcp_printpkt, 170 NULL, 171 0, 172 "IPXCP", 173 "IPX", 174 ipxcp_option_list, 175 NULL, 176 NULL, 177 NULL 178}; 179 180/* 181 * Lengths of configuration options. 182 */ 183 184#define CILEN_VOID 2 185#define CILEN_COMPLETE 2 /* length of complete option */ 186#define CILEN_NETN 6 /* network number length option */ 187#define CILEN_NODEN 8 /* node number length option */ 188#define CILEN_PROTOCOL 4 /* Minimum length of routing protocol */ 189#define CILEN_NAME 3 /* Minimum length of router name */ 190#define CILEN_COMPRESS 4 /* Minimum length of compression protocol */ 191 192#define CODENAME(x) ((x) == CONFACK ? "ACK" : \ 193 (x) == CONFNAK ? "NAK" : "REJ") 194 195static int ipxcp_is_up; 196 197static char *ipx_ntoa __P((u_int32_t)); 198 199/* Used in printing the node number */ 200#define NODE(base) base[0], base[1], base[2], base[3], base[4], base[5] 201 202/* Used to generate the proper bit mask */ 203#define BIT(num) (1 << (num)) 204 205/* 206 * Convert from internal to external notation 207 */ 208 209static short int 210to_external(internal) 211short int internal; 212{ 213 short int external; 214 215 if (internal & BIT(IPX_NONE) ) 216 external = IPX_NONE; 217 else 218 external = RIP_SAP; 219 220 return external; 221} 222 223/* 224 * Make a string representation of a network IP address. 225 */ 226 227static char * 228ipx_ntoa(ipxaddr) 229u_int32_t ipxaddr; 230{ 231 static char b[64]; 232 slprintf(b, sizeof(b), "%x", ipxaddr); 233 return b; 234} 235 236 237static u_char * 238setipxnodevalue(src,dst) 239u_char *src, *dst; 240{ 241 int indx; 242 int item; 243 244 for (;;) { 245 if (!isxdigit (*src)) 246 break; 247 248 for (indx = 0; indx < 5; ++indx) { 249 dst[indx] <<= 4; 250 dst[indx] |= (dst[indx + 1] >> 4) & 0x0F; 251 } 252 253 item = toupper (*src) - '0'; 254 if (item > 9) 255 item -= 7; 256 257 dst[5] = (dst[5] << 4) | item; 258 ++src; 259 } 260 return src; 261} 262 263static int ipx_prio_our, ipx_prio_his; 264 265static int 266setipxnode(argv) 267 char **argv; 268{ 269 char *end; 270 int have_his = 0; 271 u_char our_node[6]; 272 u_char his_node[6]; 273 274 memset (our_node, 0, 6); 275 memset (his_node, 0, 6); 276 277 end = setipxnodevalue (*argv, our_node); 278 if (*end == ':') { 279 have_his = 1; 280 end = setipxnodevalue (++end, his_node); 281 } 282 283 if (*end == '\0') { 284 ipxcp_wantoptions[0].neg_node = 1; 285 if (option_priority >= ipx_prio_our) { 286 memcpy(&ipxcp_wantoptions[0].our_node[0], our_node, 6); 287 ipx_prio_our = option_priority; 288 } 289 if (have_his && option_priority >= ipx_prio_his) { 290 memcpy(&ipxcp_wantoptions[0].his_node[0], his_node, 6); 291 ipx_prio_his = option_priority; 292 } 293 return 1; 294 } 295 296 option_error("invalid parameter '%s' for ipx-node option", *argv); 297 return 0; 298} 299 300static void 301printipxnode(opt, printer, arg) 302 option_t *opt; 303 void (*printer) __P((void *, char *, ...)); 304 void *arg; 305{ 306 unsigned char *p; 307 308 p = ipxcp_wantoptions[0].our_node; 309 if (ipx_prio_our) 310 printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x", 311 p[0], p[1], p[2], p[3], p[4], p[5]); 312 printer(arg, ":"); 313 p = ipxcp_wantoptions[0].his_node; 314 if (ipx_prio_his) 315 printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x", 316 p[0], p[1], p[2], p[3], p[4], p[5]); 317} 318 319static int 320setipxname (argv) 321 char **argv; 322{ 323 char *dest = ipxcp_wantoptions[0].name; 324 char *src = *argv; 325 int count; 326 char ch; 327 328 ipxcp_wantoptions[0].neg_name = 1; 329 ipxcp_allowoptions[0].neg_name = 1; 330 memset (dest, '\0', sizeof (ipxcp_wantoptions[0].name)); 331 332 count = 0; 333 while (*src) { 334 ch = *src++; 335 if (! isalnum (ch) && ch != '_') { 336 option_error("IPX router name must be alphanumeric or _"); 337 return 0; 338 } 339 340 if (count >= sizeof (ipxcp_wantoptions[0].name) - 1) { 341 option_error("IPX router name is limited to %d characters", 342 sizeof (ipxcp_wantoptions[0].name) - 1); 343 return 0; 344 } 345 346 dest[count++] = toupper (ch); 347 } 348 dest[count] = 0; 349 350 return 1; 351} 352 353/* 354 * ipxcp_init - Initialize IPXCP. 355 */ 356static void 357ipxcp_init(unit) 358 int unit; 359{ 360 fsm *f = &ipxcp_fsm[unit]; 361 362 f->unit = unit; 363 f->protocol = PPP_IPXCP; 364 f->callbacks = &ipxcp_callbacks; 365 fsm_init(&ipxcp_fsm[unit]); 366 367 memset (wo->name, 0, sizeof (wo->name)); 368 memset (wo->our_node, 0, sizeof (wo->our_node)); 369 memset (wo->his_node, 0, sizeof (wo->his_node)); 370 371 wo->neg_nn = 1; 372 wo->neg_complete = 1; 373 wo->network = 0; 374 375 ao->neg_node = 1; 376 ao->neg_nn = 1; 377 ao->neg_name = 1; 378 ao->neg_complete = 1; 379 ao->neg_router = 1; 380 381 ao->accept_local = 0; 382 ao->accept_remote = 0; 383 ao->accept_network = 0; 384 385 wo->tried_rip = 0; 386 wo->tried_nlsp = 0; 387} 388 389/* 390 * Copy the node number 391 */ 392 393static void 394copy_node (src, dst) 395u_char *src, *dst; 396{ 397 memcpy (dst, src, sizeof (ipxcp_wantoptions[0].our_node)); 398} 399 400/* 401 * Compare node numbers 402 */ 403 404static int 405compare_node (src, dst) 406u_char *src, *dst; 407{ 408 return memcmp (dst, src, sizeof (ipxcp_wantoptions[0].our_node)) == 0; 409} 410 411/* 412 * Is the node number zero? 413 */ 414 415static int 416zero_node (node) 417u_char *node; 418{ 419 int indx; 420 for (indx = 0; indx < sizeof (ipxcp_wantoptions[0].our_node); ++indx) 421 if (node [indx] != 0) 422 return 0; 423 return 1; 424} 425 426/* 427 * Increment the node number 428 */ 429 430static void 431inc_node (node) 432u_char *node; 433{ 434 u_char *outp; 435 u_int32_t magic_num; 436 437 outp = node; 438 magic_num = magic(); 439 *outp++ = '\0'; 440 *outp++ = '\0'; 441 PUTLONG (magic_num, outp); 442} 443 444/* 445 * ipxcp_open - IPXCP is allowed to come up. 446 */ 447static void 448ipxcp_open(unit) 449 int unit; 450{ 451 fsm_open(&ipxcp_fsm[unit]); 452} 453 454/* 455 * ipxcp_close - Take IPXCP down. 456 */ 457static void 458ipxcp_close(unit, reason) 459 int unit; 460 char *reason; 461{ 462 fsm_close(&ipxcp_fsm[unit], reason); 463} 464 465 466/* 467 * ipxcp_lowerup - The lower layer is up. 468 */ 469static void 470ipxcp_lowerup(unit) 471 int unit; 472{ 473 fsm_lowerup(&ipxcp_fsm[unit]); 474} 475 476 477/* 478 * ipxcp_lowerdown - The lower layer is down. 479 */ 480static void 481ipxcp_lowerdown(unit) 482 int unit; 483{ 484 fsm_lowerdown(&ipxcp_fsm[unit]); 485} 486 487 488/* 489 * ipxcp_input - Input IPXCP packet. 490 */ 491static void 492ipxcp_input(unit, p, len) 493 int unit; 494 u_char *p; 495 int len; 496{ 497 fsm_input(&ipxcp_fsm[unit], p, len); 498} 499 500 501/* 502 * ipxcp_protrej - A Protocol-Reject was received for IPXCP. 503 * 504 * Pretend the lower layer went down, so we shut up. 505 */ 506static void 507ipxcp_protrej(unit) 508 int unit; 509{ 510 fsm_lowerdown(&ipxcp_fsm[unit]); 511} 512 513 514/* 515 * ipxcp_resetci - Reset our CI. 516 */ 517static void 518ipxcp_resetci(f) 519 fsm *f; 520{ 521 wo->req_node = wo->neg_node && ao->neg_node; 522 wo->req_nn = wo->neg_nn && ao->neg_nn; 523 524 if (wo->our_network == 0) { 525 wo->neg_node = 1; 526 ao->accept_network = 1; 527 } 528/* 529 * If our node number is zero then change it. 530 */ 531 if (zero_node (wo->our_node)) { 532 inc_node (wo->our_node); 533 ao->accept_local = 1; 534 wo->neg_node = 1; 535 } 536/* 537 * If his node number is zero then change it. 538 */ 539 if (zero_node (wo->his_node)) { 540 inc_node (wo->his_node); 541 ao->accept_remote = 1; 542 } 543/* 544 * If no routing agent was specified then we do RIP/SAP according to the 545 * RFC documents. If you have specified something then OK. Otherwise, we 546 * do RIP/SAP. 547 */ 548 if (ao->router == 0) { 549 ao->router |= BIT(RIP_SAP); 550 wo->router |= BIT(RIP_SAP); 551 } 552 553 /* Always specify a routing protocol unless it was REJected. */ 554 wo->neg_router = 1; 555/* 556 * Start with these default values 557 */ 558 *go = *wo; 559} 560 561/* 562 * ipxcp_cilen - Return length of our CI. 563 */ 564 565static int 566ipxcp_cilen(f) 567 fsm *f; 568{ 569 int len; 570 571 len = go->neg_nn ? CILEN_NETN : 0; 572 len += go->neg_node ? CILEN_NODEN : 0; 573 len += go->neg_name ? CILEN_NAME + strlen (go->name) - 1 : 0; 574 575 /* RFC says that defaults should not be included. */ 576 if (go->neg_router && to_external(go->router) != RIP_SAP) 577 len += CILEN_PROTOCOL; 578 579 return (len); 580} 581 582 583/* 584 * ipxcp_addci - Add our desired CIs to a packet. 585 */ 586static void 587ipxcp_addci(f, ucp, lenp) 588 fsm *f; 589 u_char *ucp; 590 int *lenp; 591{ 592/* 593 * Add the options to the record. 594 */ 595 if (go->neg_nn) { 596 PUTCHAR (IPX_NETWORK_NUMBER, ucp); 597 PUTCHAR (CILEN_NETN, ucp); 598 PUTLONG (go->our_network, ucp); 599 } 600 601 if (go->neg_node) { 602 int indx; 603 PUTCHAR (IPX_NODE_NUMBER, ucp); 604 PUTCHAR (CILEN_NODEN, ucp); 605 for (indx = 0; indx < sizeof (go->our_node); ++indx) 606 PUTCHAR (go->our_node[indx], ucp); 607 } 608 609 if (go->neg_name) { 610 int cilen = strlen (go->name); 611 int indx; 612 PUTCHAR (IPX_ROUTER_NAME, ucp); 613 PUTCHAR (CILEN_NAME + cilen - 1, ucp); 614 for (indx = 0; indx < cilen; ++indx) 615 PUTCHAR (go->name [indx], ucp); 616 } 617 618 if (go->neg_router) { 619 short external = to_external (go->router); 620 if (external != RIP_SAP) { 621 PUTCHAR (IPX_ROUTER_PROTOCOL, ucp); 622 PUTCHAR (CILEN_PROTOCOL, ucp); 623 PUTSHORT (external, ucp); 624 } 625 } 626} 627 628/* 629 * ipxcp_ackci - Ack our CIs. 630 * 631 * Returns: 632 * 0 - Ack was bad. 633 * 1 - Ack was good. 634 */ 635static int 636ipxcp_ackci(f, p, len) 637 fsm *f; 638 u_char *p; 639 int len; 640{ 641 u_short cilen, citype, cishort; 642 u_char cichar; 643 u_int32_t cilong; 644 645#define ACKCIVOID(opt, neg) \ 646 if (neg) { \ 647 if ((len -= CILEN_VOID) < 0) \ 648 break; \ 649 GETCHAR(citype, p); \ 650 GETCHAR(cilen, p); \ 651 if (cilen != CILEN_VOID || \ 652 citype != opt) \ 653 break; \ 654 } 655 656#define ACKCICOMPLETE(opt,neg) ACKCIVOID(opt, neg) 657 658#define ACKCICHARS(opt, neg, val, cnt) \ 659 if (neg) { \ 660 int indx, count = cnt; \ 661 len -= (count + 2); \ 662 if (len < 0) \ 663 break; \ 664 GETCHAR(citype, p); \ 665 GETCHAR(cilen, p); \ 666 if (cilen != (count + 2) || \ 667 citype != opt) \ 668 break; \ 669 for (indx = 0; indx < count; ++indx) {\ 670 GETCHAR(cichar, p); \ 671 if (cichar != ((u_char *) &val)[indx]) \ 672 break; \ 673 }\ 674 if (indx != count) \ 675 break; \ 676 } 677 678#define ACKCINODE(opt,neg,val) ACKCICHARS(opt,neg,val,sizeof(val)) 679#define ACKCINAME(opt,neg,val) ACKCICHARS(opt,neg,val,strlen(val)) 680 681#define ACKCINETWORK(opt, neg, val) \ 682 if (neg) { \ 683 if ((len -= CILEN_NETN) < 0) \ 684 break; \ 685 GETCHAR(citype, p); \ 686 GETCHAR(cilen, p); \ 687 if (cilen != CILEN_NETN || \ 688 citype != opt) \ 689 break; \ 690 GETLONG(cilong, p); \ 691 if (cilong != val) \ 692 break; \ 693 } 694 695#define ACKCIPROTO(opt, neg, val) \ 696 if (neg) { \ 697 if (len < 2) \ 698 break; \ 699 GETCHAR(citype, p); \ 700 GETCHAR(cilen, p); \ 701 if (cilen != CILEN_PROTOCOL || citype != opt) \ 702 break; \ 703 len -= cilen; \ 704 if (len < 0) \ 705 break; \ 706 GETSHORT(cishort, p); \ 707 if (cishort != to_external (val) || cishort == RIP_SAP) \ 708 break; \ 709 } 710/* 711 * Process the ACK frame in the order in which the frame was assembled 712 */ 713 do { 714 ACKCINETWORK (IPX_NETWORK_NUMBER, go->neg_nn, go->our_network); 715 ACKCINODE (IPX_NODE_NUMBER, go->neg_node, go->our_node); 716 ACKCINAME (IPX_ROUTER_NAME, go->neg_name, go->name); 717 if (len > 0) 718 ACKCIPROTO (IPX_ROUTER_PROTOCOL, go->neg_router, go->router); 719/* 720 * This is the end of the record. 721 */ 722 if (len == 0) 723 return (1); 724 } while (0); 725/* 726 * The frame is invalid 727 */ 728 IPXCPDEBUG(("ipxcp_ackci: received bad Ack!")); 729 return (0); 730} 731 732/* 733 * ipxcp_nakci - Peer has sent a NAK for some of our CIs. 734 * This should not modify any state if the Nak is bad 735 * or if IPXCP is in the OPENED state. 736 * 737 * Returns: 738 * 0 - Nak was bad. 739 * 1 - Nak was good. 740 */ 741 742static int 743ipxcp_nakci(f, p, len) 744 fsm *f; 745 u_char *p; 746 int len; 747{ 748 u_char citype, cilen, *next; 749 u_short s; 750 u_int32_t l; 751 ipxcp_options no; /* options we've seen Naks for */ 752 ipxcp_options try; /* options to request next time */ 753 754 BZERO(&no, sizeof(no)); 755 try = *go; 756 757 while (len > CILEN_VOID) { 758 GETCHAR (citype, p); 759 GETCHAR (cilen, p); 760 len -= cilen; 761 if (len < 0) 762 goto bad; 763 next = &p [cilen - CILEN_VOID]; 764 765 switch (citype) { 766 case IPX_NETWORK_NUMBER: 767 if (!go->neg_nn || no.neg_nn || (cilen != CILEN_NETN)) 768 goto bad; 769 no.neg_nn = 1; 770 771 GETLONG(l, p); 772 if (l && ao->accept_network) 773 try.our_network = l; 774 break; 775 776 case IPX_NODE_NUMBER: 777 if (!go->neg_node || no.neg_node || (cilen != CILEN_NODEN)) 778 goto bad; 779 no.neg_node = 1; 780 781 if (!zero_node (p) && ao->accept_local && 782 ! compare_node (p, ho->his_node)) 783 copy_node (p, try.our_node); 784 break; 785 786 /* This has never been sent. Ignore the NAK frame */ 787 case IPX_COMPRESSION_PROTOCOL: 788 goto bad; 789 790 case IPX_ROUTER_PROTOCOL: 791 if (!go->neg_router || (cilen < CILEN_PROTOCOL)) 792 goto bad; 793 794 GETSHORT (s, p); 795 if (s > 15) /* This is just bad, but ignore for now. */ 796 break; 797 798 s = BIT(s); 799 if (no.router & s) /* duplicate NAKs are always bad */ 800 goto bad; 801 802 if (no.router == 0) /* Reset on first NAK only */ 803 try.router = 0; 804 805 no.router |= s; 806 try.router |= s; 807 try.neg_router = 1; 808 break; 809 810 /* These, according to the RFC, must never be NAKed. */ 811 case IPX_ROUTER_NAME: 812 case IPX_COMPLETE: 813 goto bad; 814 815 /* These are for options which we have not seen. */ 816 default: 817 break; 818 } 819 p = next; 820 } 821 822 /* 823 * Do not permit the peer to force a router protocol which we do not 824 * support. However, default to the condition that will accept "NONE". 825 */ 826 try.router &= (ao->router | BIT(IPX_NONE)); 827 if (try.router == 0 && ao->router != 0) 828 try.router = BIT(IPX_NONE); 829 830 if (try.router != 0) 831 try.neg_router = 1; 832 833 /* 834 * OK, the Nak is good. Now we can update state. 835 * If there are any options left, we ignore them. 836 */ 837 if (f->state != OPENED) 838 *go = try; 839 840 return 1; 841 842bad: 843 IPXCPDEBUG(("ipxcp_nakci: received bad Nak!")); 844 return 0; 845} 846 847/* 848 * ipxcp_rejci - Reject some of our CIs. 849 */ 850static int 851ipxcp_rejci(f, p, len) 852 fsm *f; 853 u_char *p; 854 int len; 855{ 856 u_short cilen, citype, cishort; 857 u_char cichar; 858 u_int32_t cilong; 859 ipxcp_options try; /* options to request next time */ 860 861#define REJCINETWORK(opt, neg, val) \ 862 if (neg && p[0] == opt) { \ 863 if ((len -= CILEN_NETN) < 0) \ 864 break; \ 865 GETCHAR(citype, p); \ 866 GETCHAR(cilen, p); \ 867 if (cilen != CILEN_NETN || \ 868 citype != opt) \ 869 break; \ 870 GETLONG(cilong, p); \ 871 if (cilong != val) \ 872 break; \ 873 neg = 0; \ 874 } 875 876#define REJCICHARS(opt, neg, val, cnt) \ 877 if (neg && p[0] == opt) { \ 878 int indx, count = cnt; \ 879 len -= (count + 2); \ 880 if (len < 0) \ 881 break; \ 882 GETCHAR(citype, p); \ 883 GETCHAR(cilen, p); \ 884 if (cilen != (count + 2) || \ 885 citype != opt) \ 886 break; \ 887 for (indx = 0; indx < count; ++indx) {\ 888 GETCHAR(cichar, p); \ 889 if (cichar != ((u_char *) &val)[indx]) \ 890 break; \ 891 }\ 892 if (indx != count) \ 893 break; \ 894 neg = 0; \ 895 } 896 897#define REJCINODE(opt,neg,val) REJCICHARS(opt,neg,val,sizeof(val)) 898#define REJCINAME(opt,neg,val) REJCICHARS(opt,neg,val,strlen(val)) 899 900#define REJCIVOID(opt, neg) \ 901 if (neg && p[0] == opt) { \ 902 if ((len -= CILEN_VOID) < 0) \ 903 break; \ 904 GETCHAR(citype, p); \ 905 GETCHAR(cilen, p); \ 906 if (cilen != CILEN_VOID || citype != opt) \ 907 break; \ 908 neg = 0; \ 909 } 910 911/* a reject for RIP/SAP is invalid since we don't send it and you can't 912 reject something which is not sent. (You can NAK, but you can't REJ.) */ 913#define REJCIPROTO(opt, neg, val, bit) \ 914 if (neg && p[0] == opt) { \ 915 if ((len -= CILEN_PROTOCOL) < 0) \ 916 break; \ 917 GETCHAR(citype, p); \ 918 GETCHAR(cilen, p); \ 919 if (cilen != CILEN_PROTOCOL) \ 920 break; \ 921 GETSHORT(cishort, p); \ 922 if (cishort != to_external (val) || cishort == RIP_SAP) \ 923 break; \ 924 neg = 0; \ 925 } 926/* 927 * Any Rejected CIs must be in exactly the same order that we sent. 928 * Check packet length and CI length at each step. 929 * If we find any deviations, then this packet is bad. 930 */ 931 try = *go; 932 933 do { 934 REJCINETWORK (IPX_NETWORK_NUMBER, try.neg_nn, try.our_network); 935 REJCINODE (IPX_NODE_NUMBER, try.neg_node, try.our_node); 936 REJCINAME (IPX_ROUTER_NAME, try.neg_name, try.name); 937 REJCIPROTO (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 0); 938/* 939 * This is the end of the record. 940 */ 941 if (len == 0) { 942 if (f->state != OPENED) 943 *go = try; 944 return (1); 945 } 946 } while (0); 947/* 948 * The frame is invalid at this point. 949 */ 950 IPXCPDEBUG(("ipxcp_rejci: received bad Reject!")); 951 return 0; 952} 953 954/* 955 * ipxcp_reqci - Check the peer's requested CIs and send appropriate response. 956 * 957 * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified 958 * appropriately. If reject_if_disagree is non-zero, doesn't return 959 * CONFNAK; returns CONFREJ if it can't return CONFACK. 960 */ 961static int 962ipxcp_reqci(f, inp, len, reject_if_disagree) 963 fsm *f; 964 u_char *inp; /* Requested CIs */ 965 int *len; /* Length of requested CIs */ 966 int reject_if_disagree; 967{ 968 u_char *cip, *next; /* Pointer to current and next CIs */ 969 u_short cilen, citype; /* Parsed len, type */ 970 u_short cishort; /* Parsed short value */ 971 u_int32_t cinetwork; /* Parsed address values */ 972 int rc = CONFACK; /* Final packet return code */ 973 int orc; /* Individual option return code */ 974 u_char *p; /* Pointer to next char to parse */ 975 u_char *ucp = inp; /* Pointer to current output char */ 976 int l = *len; /* Length left */ 977 978 /* 979 * Reset all his options. 980 */ 981 BZERO(ho, sizeof(*ho)); 982 983 /* 984 * Process all his options. 985 */ 986 next = inp; 987 while (l) { 988 orc = CONFACK; /* Assume success */ 989 cip = p = next; /* Remember begining of CI */ 990 if (l < 2 || /* Not enough data for CI header or */ 991 p[1] < 2 || /* CI length too small or */ 992 p[1] > l) { /* CI length too big? */ 993 IPXCPDEBUG(("ipxcp_reqci: bad CI length!")); 994 orc = CONFREJ; /* Reject bad CI */ 995 cilen = l; /* Reject till end of packet */ 996 l = 0; /* Don't loop again */ 997 goto endswitch; 998 } 999 GETCHAR(citype, p); /* Parse CI type */ 1000 GETCHAR(cilen, p); /* Parse CI length */ 1001 l -= cilen; /* Adjust remaining length */ 1002 next += cilen; /* Step to next CI */ 1003 1004 switch (citype) { /* Check CI type */ 1005/* 1006 * The network number must match. Choose the larger of the two. 1007 */ 1008 case IPX_NETWORK_NUMBER: 1009 /* if we wont negotiate the network number or the length is wrong 1010 then reject the option */ 1011 if ( !ao->neg_nn || cilen != CILEN_NETN ) { 1012 orc = CONFREJ; 1013 break; 1014 } 1015 GETLONG(cinetwork, p); 1016 1017 /* If the network numbers match then acknowledge them. */ 1018 if (cinetwork != 0) { 1019 ho->his_network = cinetwork; 1020 ho->neg_nn = 1; 1021 if (wo->our_network == cinetwork) 1022 break; 1023/* 1024 * If the network number is not given or we don't accept their change or 1025 * the network number is too small then NAK it. 1026 */ 1027 if (! ao->accept_network || cinetwork < wo->our_network) { 1028 DECPTR (sizeof (u_int32_t), p); 1029 PUTLONG (wo->our_network, p); 1030 orc = CONFNAK; 1031 } 1032 break; 1033 } 1034/* 1035 * The peer sent '0' for the network. Give it ours if we have one. 1036 */ 1037 if (go->our_network != 0) { 1038 DECPTR (sizeof (u_int32_t), p); 1039 PUTLONG (wo->our_network, p); 1040 orc = CONFNAK; 1041/* 1042 * We don't have one. Reject the value. 1043 */ 1044 } else 1045 orc = CONFREJ; 1046 1047 break; 1048/* 1049 * The node number is required 1050 */ 1051 case IPX_NODE_NUMBER: 1052 /* if we wont negotiate the node number or the length is wrong 1053 then reject the option */ 1054 if ( cilen != CILEN_NODEN ) { 1055 orc = CONFREJ; 1056 break; 1057 } 1058 1059 copy_node (p, ho->his_node); 1060 ho->neg_node = 1; 1061/* 1062 * If the remote does not have a number and we do then NAK it with the value 1063 * which we have for it. (We never have a default value of zero.) 1064 */ 1065 if (zero_node (ho->his_node)) { 1066 orc = CONFNAK; 1067 copy_node (wo->his_node, p); 1068 INCPTR (sizeof (wo->his_node), p); 1069 break; 1070 } 1071/* 1072 * If you have given me the expected network node number then I'll accept 1073 * it now. 1074 */ 1075 if (compare_node (wo->his_node, ho->his_node)) { 1076 orc = CONFACK; 1077 ho->neg_node = 1; 1078 INCPTR (sizeof (wo->his_node), p); 1079 break; 1080 } 1081/* 1082 * If his node number is the same as ours then ask him to try the next 1083 * value. 1084 */ 1085 if (compare_node (ho->his_node, go->our_node)) { 1086 inc_node (ho->his_node); 1087 orc = CONFNAK; 1088 copy_node (ho->his_node, p); 1089 INCPTR (sizeof (wo->his_node), p); 1090 break; 1091 } 1092/* 1093 * If we don't accept a new value then NAK it. 1094 */ 1095 if (! ao->accept_remote) { 1096 copy_node (wo->his_node, p); 1097 INCPTR (sizeof (wo->his_node), p); 1098 orc = CONFNAK; 1099 break; 1100 } 1101 orc = CONFACK; 1102 ho->neg_node = 1; 1103 INCPTR (sizeof (wo->his_node), p); 1104 break; 1105/* 1106 * Compression is not desired at this time. It is always rejected. 1107 */ 1108 case IPX_COMPRESSION_PROTOCOL: 1109 orc = CONFREJ; 1110 break; 1111/* 1112 * The routing protocol is a bitmask of various types. Any combination 1113 * of the values RIP_SAP and NLSP are permissible. 'IPX_NONE' for no 1114 * routing protocol must be specified only once. 1115 */ 1116 case IPX_ROUTER_PROTOCOL: 1117 if ( !ao->neg_router || cilen < CILEN_PROTOCOL ) { 1118 orc = CONFREJ; 1119 break; 1120 } 1121 1122 GETSHORT (cishort, p); 1123 1124 if (wo->neg_router == 0) { 1125 wo->neg_router = 1; 1126 wo->router = BIT(IPX_NONE); 1127 } 1128 1129 if ((cishort == IPX_NONE && ho->router != 0) || 1130 (ho->router & BIT(IPX_NONE))) { 1131 orc = CONFREJ; 1132 break; 1133 } 1134 1135 cishort = BIT(cishort); 1136 if (ho->router & cishort) { 1137 orc = CONFREJ; 1138 break; 1139 } 1140 1141 ho->router |= cishort; 1142 ho->neg_router = 1; 1143 1144 /* Finally do not allow a router protocol which we do not 1145 support. */ 1146 1147 if ((cishort & (ao->router | BIT(IPX_NONE))) == 0) { 1148 int protocol; 1149 1150 if (cishort == BIT(NLSP) && 1151 (ao->router & BIT(RIP_SAP)) && 1152 !wo->tried_rip) { 1153 protocol = RIP_SAP; 1154 wo->tried_rip = 1; 1155 } else 1156 protocol = IPX_NONE; 1157 1158 DECPTR (sizeof (u_int16_t), p); 1159 PUTSHORT (protocol, p); 1160 orc = CONFNAK; 1161 } 1162 break; 1163/* 1164 * The router name is advisorary. Just accept it if it is not too large. 1165 */ 1166 case IPX_ROUTER_NAME: 1167 if (cilen >= CILEN_NAME) { 1168 int name_size = cilen - CILEN_NAME; 1169 if (name_size > sizeof (ho->name)) 1170 name_size = sizeof (ho->name) - 1; 1171 memset (ho->name, 0, sizeof (ho->name)); 1172 memcpy (ho->name, p, name_size); 1173 ho->name [name_size] = '\0'; 1174 ho->neg_name = 1; 1175 orc = CONFACK; 1176 break; 1177 } 1178 orc = CONFREJ; 1179 break; 1180/* 1181 * This is advisorary. 1182 */ 1183 case IPX_COMPLETE: 1184 if (cilen != CILEN_COMPLETE) 1185 orc = CONFREJ; 1186 else { 1187 ho->neg_complete = 1; 1188 orc = CONFACK; 1189 } 1190 break; 1191/* 1192 * All other entries are not known at this time. 1193 */ 1194 default: 1195 orc = CONFREJ; 1196 break; 1197 } 1198endswitch: 1199 if (orc == CONFACK && /* Good CI */ 1200 rc != CONFACK) /* but prior CI wasnt? */ 1201 continue; /* Don't send this one */ 1202 1203 if (orc == CONFNAK) { /* Nak this CI? */ 1204 if (reject_if_disagree) /* Getting fed up with sending NAKs? */ 1205 orc = CONFREJ; /* Get tough if so */ 1206 if (rc == CONFREJ) /* Rejecting prior CI? */ 1207 continue; /* Don't send this one */ 1208 if (rc == CONFACK) { /* Ack'd all prior CIs? */ 1209 rc = CONFNAK; /* Not anymore... */ 1210 ucp = inp; /* Backup */ 1211 } 1212 } 1213 1214 if (orc == CONFREJ && /* Reject this CI */ 1215 rc != CONFREJ) { /* but no prior ones? */ 1216 rc = CONFREJ; 1217 ucp = inp; /* Backup */ 1218 } 1219 1220 /* Need to move CI? */ 1221 if (ucp != cip) 1222 BCOPY(cip, ucp, cilen); /* Move it */ 1223 1224 /* Update output pointer */ 1225 INCPTR(cilen, ucp); 1226 } 1227 1228 /* 1229 * If we aren't rejecting this packet, and we want to negotiate 1230 * their address, and they didn't send their address, then we 1231 * send a NAK with a IPX_NODE_NUMBER option appended. We assume the 1232 * input buffer is long enough that we can append the extra 1233 * option safely. 1234 */ 1235 1236 if (rc != CONFREJ && !ho->neg_node && 1237 wo->req_nn && !reject_if_disagree) { 1238 if (rc == CONFACK) { 1239 rc = CONFNAK; 1240 wo->req_nn = 0; /* don't ask again */ 1241 ucp = inp; /* reset pointer */ 1242 } 1243 1244 if (zero_node (wo->his_node)) 1245 inc_node (wo->his_node); 1246 1247 PUTCHAR (IPX_NODE_NUMBER, ucp); 1248 PUTCHAR (CILEN_NODEN, ucp); 1249 copy_node (wo->his_node, ucp); 1250 INCPTR (sizeof (wo->his_node), ucp); 1251 } 1252 1253 *len = ucp - inp; /* Compute output length */ 1254 IPXCPDEBUG(("ipxcp: returning Configure-%s", CODENAME(rc))); 1255 return (rc); /* Return final code */ 1256} 1257 1258/* 1259 * ipxcp_up - IPXCP has come UP. 1260 * 1261 * Configure the IP network interface appropriately and bring it up. 1262 */ 1263 1264static void 1265ipxcp_up(f) 1266 fsm *f; 1267{ 1268 int unit = f->unit; 1269 1270 IPXCPDEBUG(("ipxcp: up")); 1271 1272 /* The default router protocol is RIP/SAP. */ 1273 if (ho->router == 0) 1274 ho->router = BIT(RIP_SAP); 1275 1276 if (go->router == 0) 1277 go->router = BIT(RIP_SAP); 1278 1279 /* Fetch the network number */ 1280 if (!ho->neg_nn) 1281 ho->his_network = wo->his_network; 1282 1283 if (!ho->neg_node) 1284 copy_node (wo->his_node, ho->his_node); 1285 1286 if (!wo->neg_node && !go->neg_node) 1287 copy_node (wo->our_node, go->our_node); 1288 1289 if (zero_node (go->our_node)) { 1290 static char errmsg[] = "Could not determine local IPX node address"; 1291 if (debug) 1292 error(errmsg); 1293 ipxcp_close(f->unit, errmsg); 1294 return; 1295 } 1296 1297 go->network = go->our_network; 1298 if (ho->his_network != 0 && ho->his_network > go->network) 1299 go->network = ho->his_network; 1300 1301 if (go->network == 0) { 1302 static char errmsg[] = "Can not determine network number"; 1303 if (debug) 1304 error(errmsg); 1305 ipxcp_close (unit, errmsg); 1306 return; 1307 } 1308 1309 /* bring the interface up */ 1310 if (!sifup(unit)) { 1311 if (debug) 1312 warn("sifup failed (IPX)"); 1313 ipxcp_close(unit, "Interface configuration failed"); 1314 return; 1315 } 1316 ipxcp_is_up = 1; 1317 1318 /* set the network number for IPX */ 1319 if (!sipxfaddr(unit, go->network, go->our_node)) { 1320 if (debug) 1321 warn("sipxfaddr failed"); 1322 ipxcp_close(unit, "Interface configuration failed"); 1323 return; 1324 } 1325 1326 np_up(f->unit, PPP_IPX); 1327 1328 /* 1329 * Execute the ipx-up script, like this: 1330 * /etc/ppp/ipx-up interface tty speed local-IPX remote-IPX 1331 */ 1332 1333 ipxcp_script (f, _PATH_IPXUP); 1334} 1335 1336/* 1337 * ipxcp_down - IPXCP has gone DOWN. 1338 * 1339 * Take the IP network interface down, clear its addresses 1340 * and delete routes through it. 1341 */ 1342 1343static void 1344ipxcp_down(f) 1345 fsm *f; 1346{ 1347 IPXCPDEBUG(("ipxcp: down")); 1348 1349 if (!ipxcp_is_up) 1350 return; 1351 ipxcp_is_up = 0; 1352 np_down(f->unit, PPP_IPX); 1353 cipxfaddr(f->unit); 1354 sifnpmode(f->unit, PPP_IPX, NPMODE_DROP); 1355 sifdown(f->unit); 1356 ipxcp_script (f, _PATH_IPXDOWN); 1357} 1358 1359 1360/* 1361 * ipxcp_finished - possibly shut down the lower layers. 1362 */ 1363static void 1364ipxcp_finished(f) 1365 fsm *f; 1366{ 1367 np_finished(f->unit, PPP_IPX); 1368} 1369 1370 1371/* 1372 * ipxcp_script - Execute a script with arguments 1373 * interface-name tty-name speed local-IPX remote-IPX networks. 1374 */ 1375static void 1376ipxcp_script(f, script) 1377 fsm *f; 1378 char *script; 1379{ 1380 char strspeed[32], strlocal[32], strremote[32]; 1381 char strnetwork[32], strpid[32]; 1382 char *argv[14], strproto_lcl[32], strproto_rmt[32]; 1383 1384 slprintf(strpid, sizeof(strpid), "%d", getpid()); 1385 slprintf(strspeed, sizeof(strspeed),"%d", baud_rate); 1386 1387 strproto_lcl[0] = '\0'; 1388 if (go->neg_router && ((go->router & BIT(IPX_NONE)) == 0)) { 1389 if (go->router & BIT(RIP_SAP)) 1390 strlcpy (strproto_lcl, "RIP ", sizeof(strproto_lcl)); 1391 if (go->router & BIT(NLSP)) 1392 strlcat (strproto_lcl, "NLSP ", sizeof(strproto_lcl)); 1393 } 1394 1395 if (strproto_lcl[0] == '\0') 1396 strlcpy (strproto_lcl, "NONE ", sizeof(strproto_lcl)); 1397 1398 strproto_lcl[strlen (strproto_lcl)-1] = '\0'; 1399 1400 strproto_rmt[0] = '\0'; 1401 if (ho->neg_router && ((ho->router & BIT(IPX_NONE)) == 0)) { 1402 if (ho->router & BIT(RIP_SAP)) 1403 strlcpy (strproto_rmt, "RIP ", sizeof(strproto_rmt)); 1404 if (ho->router & BIT(NLSP)) 1405 strlcat (strproto_rmt, "NLSP ", sizeof(strproto_rmt)); 1406 } 1407 1408 if (strproto_rmt[0] == '\0') 1409 strlcpy (strproto_rmt, "NONE ", sizeof(strproto_rmt)); 1410 1411 strproto_rmt[strlen (strproto_rmt)-1] = '\0'; 1412 1413 strlcpy (strnetwork, ipx_ntoa (go->network), sizeof(strnetwork)); 1414 1415 slprintf (strlocal, sizeof(strlocal), "%0.6B", go->our_node); 1416 1417 slprintf (strremote, sizeof(strremote), "%0.6B", ho->his_node); 1418 1419 argv[0] = script; 1420 argv[1] = ifname; 1421 argv[2] = devnam; 1422 argv[3] = strspeed; 1423 argv[4] = strnetwork; 1424 argv[5] = strlocal; 1425 argv[6] = strremote; 1426 argv[7] = strproto_lcl; 1427 argv[8] = strproto_rmt; 1428 argv[9] = go->name; 1429 argv[10] = ho->name; 1430 argv[11] = ipparam; 1431 argv[12] = strpid; 1432 argv[13] = NULL; 1433 run_program(script, argv, 0, NULL, NULL); 1434} 1435 1436/* 1437 * ipxcp_printpkt - print the contents of an IPXCP packet. 1438 */ 1439static char *ipxcp_codenames[] = { 1440 "ConfReq", "ConfAck", "ConfNak", "ConfRej", 1441 "TermReq", "TermAck", "CodeRej" 1442}; 1443 1444static int 1445ipxcp_printpkt(p, plen, printer, arg) 1446 u_char *p; 1447 int plen; 1448 void (*printer) __P((void *, char *, ...)); 1449 void *arg; 1450{ 1451 int code, id, len, olen; 1452 u_char *pstart, *optend; 1453 u_short cishort; 1454 u_int32_t cilong; 1455 1456 if (plen < HEADERLEN) 1457 return 0; 1458 pstart = p; 1459 GETCHAR(code, p); 1460 GETCHAR(id, p); 1461 GETSHORT(len, p); 1462 if (len < HEADERLEN || len > plen) 1463 return 0; 1464 1465 if (code >= 1 && code <= sizeof(ipxcp_codenames) / sizeof(char *)) 1466 printer(arg, " %s", ipxcp_codenames[code-1]); 1467 else 1468 printer(arg, " code=0x%x", code); 1469 printer(arg, " id=0x%x", id); 1470 len -= HEADERLEN; 1471 switch (code) { 1472 case CONFREQ: 1473 case CONFACK: 1474 case CONFNAK: 1475 case CONFREJ: 1476 /* print option list */ 1477 while (len >= 2) { 1478 GETCHAR(code, p); 1479 GETCHAR(olen, p); 1480 p -= 2; 1481 if (olen < CILEN_VOID || olen > len) { 1482 break; 1483 } 1484 printer(arg, " <"); 1485 len -= olen; 1486 optend = p + olen; 1487 switch (code) { 1488 case IPX_NETWORK_NUMBER: 1489 if (olen == CILEN_NETN) { 1490 p += 2; 1491 GETLONG(cilong, p); 1492 printer (arg, "network %s", ipx_ntoa (cilong)); 1493 } 1494 break; 1495 case IPX_NODE_NUMBER: 1496 if (olen == CILEN_NODEN) { 1497 p += 2; 1498 printer (arg, "node "); 1499 while (p < optend) { 1500 GETCHAR(code, p); 1501 printer(arg, "%.2x", (int) (unsigned int) (unsigned char) code); 1502 } 1503 } 1504 break; 1505 case IPX_COMPRESSION_PROTOCOL: 1506 if (olen == CILEN_COMPRESS) { 1507 p += 2; 1508 GETSHORT (cishort, p); 1509 printer (arg, "compression %d", (int) cishort); 1510 } 1511 break; 1512 case IPX_ROUTER_PROTOCOL: 1513 if (olen == CILEN_PROTOCOL) { 1514 p += 2; 1515 GETSHORT (cishort, p); 1516 printer (arg, "router proto %d", (int) cishort); 1517 } 1518 break; 1519 case IPX_ROUTER_NAME: 1520 if (olen >= CILEN_NAME) { 1521 p += 2; 1522 printer (arg, "router name \""); 1523 while (p < optend) { 1524 GETCHAR(code, p); 1525 if (code >= 0x20 && code <= 0x7E) 1526 printer (arg, "%c", (int) (unsigned int) (unsigned char) code); 1527 else 1528 printer (arg, " \\%.2x", (int) (unsigned int) (unsigned char) code); 1529 } 1530 printer (arg, "\""); 1531 } 1532 break; 1533 case IPX_COMPLETE: 1534 if (olen == CILEN_COMPLETE) { 1535 p += 2; 1536 printer (arg, "complete"); 1537 } 1538 break; 1539 default: 1540 break; 1541 } 1542 1543 while (p < optend) { 1544 GETCHAR(code, p); 1545 printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code); 1546 } 1547 printer(arg, ">"); 1548 } 1549 break; 1550 1551 case TERMACK: 1552 case TERMREQ: 1553 if (len > 0 && *p >= ' ' && *p < 0x7f) { 1554 printer(arg, " "); 1555 print_string(p, len, printer, arg); 1556 p += len; 1557 len = 0; 1558 } 1559 break; 1560 } 1561 1562 /* print the rest of the bytes in the packet */ 1563 for (; len > 0; --len) { 1564 GETCHAR(code, p); 1565 printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code); 1566 } 1567 1568 return p - pstart; 1569} 1570#endif /* ifdef IPX_CHANGE */ 1571