release/src/router/pppd/pppd/ipxcp.c

   1 /*
   2  * ipxcp.c - PPP IPX Control Protocol.
   3  *
   4  * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  *
  18  * 3. The name "Carnegie Mellon University" must not be used to
  19  *    endorse or promote products derived from this software without
  20  *    prior written permission. For permission or any legal
  21  *    details, please contact
  22  *      Office of Technology Transfer
  23  *      Carnegie Mellon University
  24  *      5000 Forbes Avenue
  25  *      Pittsburgh, PA  15213-3890
  26  *      (412) 268-4387, fax: (412) 268-7395
  27  *      tech-transfer@andrew.cmu.edu
  28  *
  29  * 4. Redistributions of any form whatsoever must retain the following
  30  *    acknowledgment:
  31  *    "This product includes software developed by Computing Services
  32  *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
  33  *
  34  * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
  35  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  36  * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
  37  * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  38  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  39  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  40  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  41  */
  42
  43 #ifdef IPX_CHANGE
  44
  45 #define RCSID   "$Id: ipxcp.c,v 1.24 2005/08/25 23:59:34 paulus Exp $"
  46
  47 /*
  48  * TODO:
  49  */
  50
  51 #include <stdio.h>
  52 #include <string.h>
  53 #include <unistd.h>
  54 #include <ctype.h>
  55 #include <sys/types.h>
  56 #include <sys/socket.h>
  57 #include <netinet/in.h>
  58
  59 #include "pppd.h"
  60 #include "fsm.h"
  61 #include "ipxcp.h"
  62 #include "pathnames.h"
  63 #include "magic.h"
  64
  65 static const char rcsid[] = RCSID;
  66
  67 /* global vars */
  68 ipxcp_options ipxcp_wantoptions[NUM_PPP];       /* Options that we want to request */
  69 ipxcp_options ipxcp_gotoptions[NUM_PPP];        /* Options that peer ack'd */
  70 ipxcp_options ipxcp_allowoptions[NUM_PPP];      /* Options we allow peer to request */
  71 ipxcp_options ipxcp_hisoptions[NUM_PPP];        /* Options that we ack'd */
  72
  73 #define wo (&ipxcp_wantoptions[0])
  74 #define ao (&ipxcp_allowoptions[0])
  75 #define go (&ipxcp_gotoptions[0])
  76 #define ho (&ipxcp_hisoptions[0])
  77
  78 /*
  79  * Callbacks for fsm code.  (CI = Configuration Information)
  80  */
  81 static void ipxcp_resetci __P((fsm *)); /* Reset our CI */
  82 static int  ipxcp_cilen __P((fsm *));           /* Return length of our CI */
  83 static void ipxcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */
  84 static int  ipxcp_ackci __P((fsm *, u_char *, int));    /* Peer ack'd our CI */
  85 static int  ipxcp_nakci __P((fsm *, u_char *, int, int));/* Peer nak'd our CI */
  86 static int  ipxcp_rejci __P((fsm *, u_char *, int));    /* Peer rej'd our CI */
  87 static int  ipxcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */
  88 static void ipxcp_up __P((fsm *));              /* We're UP */
  89 static void ipxcp_down __P((fsm *));            /* We're DOWN */
  90 static void ipxcp_finished __P((fsm *));        /* Don't need lower layer */
  91 static void ipxcp_script __P((fsm *, char *)); /* Run an up/down script */
  92
  93 fsm ipxcp_fsm[NUM_PPP];         /* IPXCP fsm structure */
  94
  95 static fsm_callbacks ipxcp_callbacks = { /* IPXCP callback routines */
  96     ipxcp_resetci,              /* Reset our Configuration Information */
  97     ipxcp_cilen,                /* Length of our Configuration Information */
  98     ipxcp_addci,                /* Add our Configuration Information */
  99     ipxcp_ackci,                /* ACK our Configuration Information */
 100     ipxcp_nakci,                /* NAK our Configuration Information */
 101     ipxcp_rejci,                /* Reject our Configuration Information */
 102     ipxcp_reqci,                /* Request peer's Configuration Information */
 103     ipxcp_up,                   /* Called when fsm reaches OPENED state */
 104     ipxcp_down,                 /* Called when fsm leaves OPENED state */
 105     NULL,                       /* Called when we want the lower layer up */
 106     ipxcp_finished,             /* Called when we want the lower layer down */
 107     NULL,                       /* Called when Protocol-Reject received */
 108     NULL,                       /* Retransmission is necessary */
 109     NULL,                       /* Called to handle protocol-specific codes */
 110     "IPXCP"                     /* String name of protocol */
 111 };
 112
 113 /*
 114  * Command-line options.
 115  */
 116 static int setipxnode __P((char **));
 117 static void printipxnode __P((option_t *,
 118                               void (*)(void *, char *, ...), void *));
 119 static int setipxname __P((char **));
 120
 121 static option_t ipxcp_option_list[] = {
 122     { "ipx", o_bool, &ipxcp_protent.enabled_flag,
 123       "Enable IPXCP (and IPX)", OPT_PRIO | 1 },
 124     { "+ipx", o_bool, &ipxcp_protent.enabled_flag,
 125       "Enable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS | 1 },
 126     { "noipx", o_bool, &ipxcp_protent.enabled_flag,
 127       "Disable IPXCP (and IPX)", OPT_PRIOSUB },
 128     { "-ipx", o_bool, &ipxcp_protent.enabled_flag,
 129       "Disable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS },
 130
 131     { "ipx-network", o_uint32, &ipxcp_wantoptions[0].our_network,
 132       "Set our IPX network number", OPT_PRIO, &ipxcp_wantoptions[0].neg_nn },
 133
 134     { "ipxcp-accept-network", o_bool, &ipxcp_wantoptions[0].accept_network,
 135       "Accept peer IPX network number", 1,
 136       &ipxcp_allowoptions[0].accept_network },
 137
 138     { "ipx-node", o_special, (void *)setipxnode,
 139       "Set IPX node number", OPT_A2PRINTER, (void *)printipxnode },
 140
 141     { "ipxcp-accept-local", o_bool, &ipxcp_wantoptions[0].accept_local,
 142       "Accept our IPX address", 1,
 143       &ipxcp_allowoptions[0].accept_local },
 144
 145     { "ipxcp-accept-remote", o_bool, &ipxcp_wantoptions[0].accept_remote,
 146       "Accept peer's IPX address", 1,
 147       &ipxcp_allowoptions[0].accept_remote },
 148
 149     { "ipx-routing", o_int, &ipxcp_wantoptions[0].router,
 150       "Set IPX routing proto number", OPT_PRIO,
 151       &ipxcp_wantoptions[0].neg_router },
 152
 153     { "ipx-router-name", o_special, setipxname,
 154       "Set IPX router name", OPT_PRIO | OPT_A2STRVAL | OPT_STATIC,
 155        &ipxcp_wantoptions[0].name },
 156
 157     { "ipxcp-restart", o_int, &ipxcp_fsm[0].timeouttime,
 158       "Set timeout for IPXCP", OPT_PRIO },
 159     { "ipxcp-max-terminate", o_int, &ipxcp_fsm[0].maxtermtransmits,
 160       "Set max #xmits for IPXCP term-reqs", OPT_PRIO },
 161     { "ipxcp-max-configure", o_int, &ipxcp_fsm[0].maxconfreqtransmits,
 162       "Set max #xmits for IPXCP conf-reqs", OPT_PRIO },
 163     { "ipxcp-max-failure", o_int, &ipxcp_fsm[0].maxnakloops,
 164       "Set max #conf-naks for IPXCP", OPT_PRIO },
 165
 166     { NULL }
 167 };
 168
 169 /*
 170  * Protocol entry points.
 171  */
 172
 173 static void ipxcp_init __P((int));
 174 static void ipxcp_open __P((int));
 175 static void ipxcp_close __P((int, char *));
 176 static void ipxcp_lowerup __P((int));
 177 static void ipxcp_lowerdown __P((int));
 178 static void ipxcp_input __P((int, u_char *, int));
 179 static void ipxcp_protrej __P((int));
 180 static int  ipxcp_printpkt __P((u_char *, int,
 181                                 void (*) __P((void *, char *, ...)), void *));
 182
 183 struct protent ipxcp_protent = {
 184     PPP_IPXCP,
 185     ipxcp_init,
 186     ipxcp_input,
 187     ipxcp_protrej,
 188     ipxcp_lowerup,
 189     ipxcp_lowerdown,
 190     ipxcp_open,
 191     ipxcp_close,
 192     ipxcp_printpkt,
 193     NULL,
 194     0,
 195     "IPXCP",
 196     "IPX",
 197     ipxcp_option_list,
 198     NULL,
 199     NULL,
 200     NULL
 201 };
 202
 203 /*
 204  * Lengths of configuration options.
 205  */
 206
 207 #define CILEN_VOID      2
 208 #define CILEN_COMPLETE  2       /* length of complete option */
 209 #define CILEN_NETN      6       /* network number length option */
 210 #define CILEN_NODEN     8       /* node number length option */
 211 #define CILEN_PROTOCOL  4       /* Minimum length of routing protocol */
 212 #define CILEN_NAME      3       /* Minimum length of router name */
 213 #define CILEN_COMPRESS  4       /* Minimum length of compression protocol */
 214
 215 #define CODENAME(x)     ((x) == CONFACK ? "ACK" : \
 216                          (x) == CONFNAK ? "NAK" : "REJ")
 217
 218 static int ipxcp_is_up;
 219
 220 static char *ipx_ntoa __P((u_int32_t));
 221
 222 /* Used in printing the node number */
 223 #define NODE(base) base[0], base[1], base[2], base[3], base[4], base[5]
 224
 225 /* Used to generate the proper bit mask */
 226 #define BIT(num)   (1 << (num))
 227
 228 /*
 229  * Convert from internal to external notation
 230  */
 231
 232 static short int
 233 to_external(internal)
 234 short int internal;
 235 {
 236     short int  external;
 237
 238     if (internal & BIT(IPX_NONE) )
 239         external = IPX_NONE;
 240     else
 241         external = RIP_SAP;
 242
 243     return external;
 244 }
 245
 246 /*
 247  * Make a string representation of a network IP address.
 248  */
 249
 250 static char *
 251 ipx_ntoa(ipxaddr)
 252 u_int32_t ipxaddr;
 253 {
 254     static char b[64];
 255     slprintf(b, sizeof(b), "%x", ipxaddr);
 256     return b;
 257 }
 258
 259
 260 static u_char *
 261 setipxnodevalue(src,dst)
 262 u_char *src, *dst;
 263 {
 264     int indx;
 265     int item;
 266
 267     for (;;) {
 268         if (!isxdigit (*src))
 269             break;
 270
 271         for (indx = 0; indx < 5; ++indx) {
 272             dst[indx] <<= 4;
 273             dst[indx] |= (dst[indx + 1] >> 4) & 0x0F;
 274         }
 275
 276         item = toupper (*src) - '0';
 277         if (item > 9)
 278             item -= 7;
 279
 280         dst[5] = (dst[5] << 4) | item;
 281         ++src;
 282     }
 283     return src;
 284 }
 285
 286 static int ipx_prio_our, ipx_prio_his;
 287
 288 static int
 289 setipxnode(argv)
 290     char **argv;
 291 {
 292     u_char *end;
 293     int have_his = 0;
 294     u_char our_node[6];
 295     u_char his_node[6];
 296
 297     memset (our_node, 0, 6);
 298     memset (his_node, 0, 6);
 299
 300     end = setipxnodevalue (*argv, our_node);
 301     if (*end == ':') {
 302         have_his = 1;
 303         end = setipxnodevalue (++end, his_node);
 304     }
 305
 306     if (*end == '\0') {
 307         ipxcp_wantoptions[0].neg_node = 1;
 308         if (option_priority >= ipx_prio_our) {
 309             memcpy(&ipxcp_wantoptions[0].our_node[0], our_node, 6);
 310             ipx_prio_our = option_priority;
 311         }
 312         if (have_his && option_priority >= ipx_prio_his) {
 313             memcpy(&ipxcp_wantoptions[0].his_node[0], his_node, 6);
 314             ipx_prio_his = option_priority;
 315         }
 316         return 1;
 317     }
 318
 319     option_error("invalid parameter '%s' for ipx-node option", *argv);
 320     return 0;
 321 }
 322
 323 static void
 324 printipxnode(opt, printer, arg)
 325     option_t *opt;
 326     void (*printer) __P((void *, char *, ...));
 327     void *arg;
 328 {
 329         unsigned char *p;
 330
 331         p = ipxcp_wantoptions[0].our_node;
 332         if (ipx_prio_our)
 333                 printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x",
 334                         p[0], p[1], p[2], p[3], p[4], p[5]);
 335         printer(arg, ":");
 336         p = ipxcp_wantoptions[0].his_node;
 337         if (ipx_prio_his)
 338                 printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x",
 339                         p[0], p[1], p[2], p[3], p[4], p[5]);
 340 }
 341
 342 static int
 343 setipxname (argv)
 344     char **argv;
 345 {
 346     u_char *dest = ipxcp_wantoptions[0].name;
 347     char *src  = *argv;
 348     int  count;
 349     char ch;
 350
 351     ipxcp_wantoptions[0].neg_name  = 1;
 352     ipxcp_allowoptions[0].neg_name = 1;
 353     memset (dest, '\0', sizeof (ipxcp_wantoptions[0].name));
 354
 355     count = 0;
 356     while (*src) {
 357         ch = *src++;
 358         if (! isalnum (ch) && ch != '_') {
 359             option_error("IPX router name must be alphanumeric or _");
 360             return 0;
 361         }
 362
 363         if (count >= sizeof (ipxcp_wantoptions[0].name) - 1) {
 364             option_error("IPX router name is limited to %d characters",
 365                          sizeof (ipxcp_wantoptions[0].name) - 1);
 366             return 0;
 367         }
 368
 369         dest[count++] = toupper (ch);
 370     }
 371     dest[count] = 0;
 372
 373     return 1;
 374 }
 375
 376 /*
 377  * ipxcp_init - Initialize IPXCP.
 378  */
 379 static void
 380 ipxcp_init(unit)
 381     int unit;
 382 {
 383     fsm *f = &ipxcp_fsm[unit];
 384
 385     f->unit      = unit;
 386     f->protocol  = PPP_IPXCP;
 387     f->callbacks = &ipxcp_callbacks;
 388     fsm_init(&ipxcp_fsm[unit]);
 389
 390     memset (wo->name,     0, sizeof (wo->name));
 391     memset (wo->our_node, 0, sizeof (wo->our_node));
 392     memset (wo->his_node, 0, sizeof (wo->his_node));
 393
 394     wo->neg_nn         = 1;
 395     wo->neg_complete   = 1;
 396     wo->network        = 0;
 397
 398     ao->neg_node       = 1;
 399     ao->neg_nn         = 1;
 400     ao->neg_name       = 1;
 401     ao->neg_complete   = 1;
 402     ao->neg_router     = 1;
 403
 404     ao->accept_local   = 0;
 405     ao->accept_remote  = 0;
 406     ao->accept_network = 0;
 407
 408     wo->tried_rip      = 0;
 409     wo->tried_nlsp     = 0;
 410 }
 411
 412 /*
 413  * Copy the node number
 414  */
 415
 416 static void
 417 copy_node (src, dst)
 418 u_char *src, *dst;
 419 {
 420     memcpy (dst, src, sizeof (ipxcp_wantoptions[0].our_node));
 421 }
 422
 423 /*
 424  * Compare node numbers
 425  */
 426
 427 static int
 428 compare_node (src, dst)
 429 u_char *src, *dst;
 430 {
 431     return memcmp (dst, src, sizeof (ipxcp_wantoptions[0].our_node)) == 0;
 432 }
 433
 434 /*
 435  * Is the node number zero?
 436  */
 437
 438 static int
 439 zero_node (node)
 440 u_char *node;
 441 {
 442     int indx;
 443     for (indx = 0; indx < sizeof (ipxcp_wantoptions[0].our_node); ++indx)
 444         if (node [indx] != 0)
 445             return 0;
 446     return 1;
 447 }
 448
 449 /*
 450  * Increment the node number
 451  */
 452
 453 static void
 454 inc_node (node)
 455 u_char *node;
 456 {
 457     u_char   *outp;
 458     u_int32_t magic_num;
 459
 460     outp      = node;
 461     magic_num = magic();
 462     *outp++   = '\0';
 463     *outp++   = '\0';
 464     PUTLONG (magic_num, outp);
 465 }
 466
 467 /*
 468  * ipxcp_open - IPXCP is allowed to come up.
 469  */
 470 static void
 471 ipxcp_open(unit)
 472     int unit;
 473 {
 474     fsm_open(&ipxcp_fsm[unit]);
 475 }
 476
 477 /*
 478  * ipxcp_close - Take IPXCP down.
 479  */
 480 static void
 481 ipxcp_close(unit, reason)
 482     int unit;
 483     char *reason;
 484 {
 485     fsm_close(&ipxcp_fsm[unit], reason);
 486 }
 487
 488
 489 /*
 490  * ipxcp_lowerup - The lower layer is up.
 491  */
 492 static void
 493 ipxcp_lowerup(unit)
 494     int unit;
 495 {
 496     fsm_lowerup(&ipxcp_fsm[unit]);
 497 }
 498
 499
 500 /*
 501  * ipxcp_lowerdown - The lower layer is down.
 502  */
 503 static void
 504 ipxcp_lowerdown(unit)
 505     int unit;
 506 {
 507     fsm_lowerdown(&ipxcp_fsm[unit]);
 508 }
 509
 510
 511 /*
 512  * ipxcp_input - Input IPXCP packet.
 513  */
 514 static void
 515 ipxcp_input(unit, p, len)
 516     int unit;
 517     u_char *p;
 518     int len;
 519 {
 520     fsm_input(&ipxcp_fsm[unit], p, len);
 521 }
 522
 523
 524 /*
 525  * ipxcp_protrej - A Protocol-Reject was received for IPXCP.
 526  *
 527  * Pretend the lower layer went down, so we shut up.
 528  */
 529 static void
 530 ipxcp_protrej(unit)
 531     int unit;
 532 {
 533     fsm_lowerdown(&ipxcp_fsm[unit]);
 534 }
 535
 536
 537 /*
 538  * ipxcp_resetci - Reset our CI.
 539  */
 540 static void
 541 ipxcp_resetci(f)
 542     fsm *f;
 543 {
 544     wo->req_node = wo->neg_node && ao->neg_node;
 545     wo->req_nn   = wo->neg_nn   && ao->neg_nn;
 546
 547     if (wo->our_network == 0) {
 548         wo->neg_node       = 1;
 549         ao->accept_network = 1;
 550     }
 551 /*
 552  * If our node number is zero then change it.
 553  */
 554     if (zero_node (wo->our_node)) {
 555         inc_node (wo->our_node);
 556         ao->accept_local = 1;
 557         wo->neg_node     = 1;
 558     }
 559 /*
 560  * If his node number is zero then change it.
 561  */
 562     if (zero_node (wo->his_node)) {
 563         inc_node (wo->his_node);
 564         ao->accept_remote = 1;
 565     }
 566 /*
 567  * If no routing agent was specified then we do RIP/SAP according to the
 568  * RFC documents. If you have specified something then OK. Otherwise, we
 569  * do RIP/SAP.
 570  */
 571     if (ao->router == 0) {
 572         ao->router |= BIT(RIP_SAP);
 573         wo->router |= BIT(RIP_SAP);
 574     }
 575
 576     /* Always specify a routing protocol unless it was REJected. */
 577     wo->neg_router = 1;
 578 /*
 579  * Start with these default values
 580  */
 581     *go = *wo;
 582 }
 583
 584 /*
 585  * ipxcp_cilen - Return length of our CI.
 586  */
 587
 588 static int
 589 ipxcp_cilen(f)
 590     fsm *f;
 591 {
 592     int len;
 593
 594     len  = go->neg_nn       ? CILEN_NETN     : 0;
 595     len += go->neg_node     ? CILEN_NODEN    : 0;
 596     len += go->neg_name     ? CILEN_NAME + strlen ((char *)go->name) - 1 : 0;
 597
 598     /* RFC says that defaults should not be included. */
 599     if (go->neg_router && to_external(go->router) != RIP_SAP)
 600         len += CILEN_PROTOCOL;
 601
 602     return (len);
 603 }
 604
 605
 606 /*
 607  * ipxcp_addci - Add our desired CIs to a packet.
 608  */
 609 static void
 610 ipxcp_addci(f, ucp, lenp)
 611     fsm *f;
 612     u_char *ucp;
 613     int *lenp;
 614 {
 615 /*
 616  * Add the options to the record.
 617  */
 618     if (go->neg_nn) {
 619         PUTCHAR (IPX_NETWORK_NUMBER, ucp);
 620         PUTCHAR (CILEN_NETN, ucp);
 621         PUTLONG (go->our_network, ucp);
 622     }
 623
 624     if (go->neg_node) {
 625         int indx;
 626         PUTCHAR (IPX_NODE_NUMBER, ucp);
 627         PUTCHAR (CILEN_NODEN, ucp);
 628         for (indx = 0; indx < sizeof (go->our_node); ++indx)
 629             PUTCHAR (go->our_node[indx], ucp);
 630     }
 631
 632     if (go->neg_name) {
 633             int cilen = strlen ((char *)go->name);
 634         int indx;
 635         PUTCHAR (IPX_ROUTER_NAME, ucp);
 636         PUTCHAR (CILEN_NAME + cilen - 1, ucp);
 637         for (indx = 0; indx < cilen; ++indx)
 638             PUTCHAR (go->name [indx], ucp);
 639     }
 640
 641     if (go->neg_router) {
 642         short external = to_external (go->router);
 643         if (external != RIP_SAP) {
 644             PUTCHAR  (IPX_ROUTER_PROTOCOL, ucp);
 645             PUTCHAR  (CILEN_PROTOCOL,      ucp);
 646             PUTSHORT (external,            ucp);
 647         }
 648     }
 649 }
 650
 651 /*
 652  * ipxcp_ackci - Ack our CIs.
 653  *
 654  * Returns:
 655  *      0 - Ack was bad.
 656  *      1 - Ack was good.
 657  */
 658 static int
 659 ipxcp_ackci(f, p, len)
 660     fsm *f;
 661     u_char *p;
 662     int len;
 663 {
 664     u_short cilen, citype, cishort;
 665     u_char cichar;
 666     u_int32_t cilong;
 667
 668 #define ACKCIVOID(opt, neg) \
 669     if (neg) { \
 670         if ((len -= CILEN_VOID) < 0) \
 671             break; \
 672         GETCHAR(citype, p); \
 673         GETCHAR(cilen, p); \
 674         if (cilen != CILEN_VOID || \
 675             citype != opt) \
 676             break; \
 677     }
 678
 679 #define ACKCICOMPLETE(opt,neg)  ACKCIVOID(opt, neg)
 680
 681 #define ACKCICHARS(opt, neg, val, cnt) \
 682     if (neg) { \
 683         int indx, count = cnt; \
 684         len -= (count + 2); \
 685         if (len < 0) \
 686             break; \
 687         GETCHAR(citype, p); \
 688         GETCHAR(cilen, p); \
 689         if (cilen != (count + 2) || \
 690             citype != opt) \
 691             break; \
 692         for (indx = 0; indx < count; ++indx) {\
 693             GETCHAR(cichar, p); \
 694             if (cichar != ((u_char *) &val)[indx]) \
 695                break; \
 696         }\
 697         if (indx != count) \
 698             break; \
 699     }
 700
 701 #define ACKCINODE(opt,neg,val) ACKCICHARS(opt,neg,val,sizeof(val))
 702 #define ACKCINAME(opt,neg,val) ACKCICHARS(opt,neg,val,strlen((char *)val))
 703
 704 #define ACKCINETWORK(opt, neg, val) \
 705     if (neg) { \
 706         if ((len -= CILEN_NETN) < 0) \
 707             break; \
 708         GETCHAR(citype, p); \
 709         GETCHAR(cilen, p); \
 710         if (cilen != CILEN_NETN || \
 711             citype != opt) \
 712             break; \
 713         GETLONG(cilong, p); \
 714         if (cilong != val) \
 715             break; \
 716     }
 717
 718 #define ACKCIPROTO(opt, neg, val) \
 719     if (neg) { \
 720         if (len < 2) \
 721             break; \
 722         GETCHAR(citype, p); \
 723         GETCHAR(cilen, p); \
 724         if (cilen != CILEN_PROTOCOL || citype != opt) \
 725             break; \
 726         len -= cilen; \
 727         if (len < 0) \
 728             break; \
 729         GETSHORT(cishort, p); \
 730         if (cishort != to_external (val) || cishort == RIP_SAP) \
 731             break; \
 732       }
 733 /*
 734  * Process the ACK frame in the order in which the frame was assembled
 735  */
 736     do {
 737         ACKCINETWORK  (IPX_NETWORK_NUMBER,  go->neg_nn,     go->our_network);
 738         ACKCINODE     (IPX_NODE_NUMBER,     go->neg_node,   go->our_node);
 739         ACKCINAME     (IPX_ROUTER_NAME,     go->neg_name,   go->name);
 740         if (len > 0)
 741                 ACKCIPROTO    (IPX_ROUTER_PROTOCOL, go->neg_router, go->router);
 742 /*
 743  * This is the end of the record.
 744  */
 745         if (len == 0)
 746             return (1);
 747     } while (0);
 748 /*
 749  * The frame is invalid
 750  */
 751     IPXCPDEBUG(("ipxcp_ackci: received bad Ack!"));
 752     return (0);
 753 }
 754
 755 /*
 756  * ipxcp_nakci - Peer has sent a NAK for some of our CIs.
 757  * This should not modify any state if the Nak is bad
 758  * or if IPXCP is in the OPENED state.
 759  *
 760  * Returns:
 761  *      0 - Nak was bad.
 762  *      1 - Nak was good.
 763  */
 764
 765 static int
 766 ipxcp_nakci(f, p, len, treat_as_reject)
 767     fsm *f;
 768     u_char *p;
 769     int len;
 770     int treat_as_reject;
 771 {
 772     u_char citype, cilen, *next;
 773     u_short s;
 774     u_int32_t l;
 775     ipxcp_options no;           /* options we've seen Naks for */
 776     ipxcp_options try;          /* options to request next time */
 777
 778     BZERO(&no, sizeof(no));
 779     try = *go;
 780
 781     while (len >= CILEN_VOID) {
 782         GETCHAR (citype, p);
 783         GETCHAR (cilen,  p);
 784         len -= cilen;
 785         if (cilen < CILEN_VOID || len < 0)
 786             goto bad;
 787         next = &p [cilen - CILEN_VOID];
 788
 789         switch (citype) {
 790         case IPX_NETWORK_NUMBER:
 791             if (!go->neg_nn || no.neg_nn || (cilen != CILEN_NETN))
 792                 goto bad;
 793             no.neg_nn = 1;
 794
 795             GETLONG(l, p);
 796             if (treat_as_reject)
 797                 try.neg_nn = 0;
 798             else if (l && ao->accept_network)
 799                 try.our_network = l;
 800             break;
 801
 802         case IPX_NODE_NUMBER:
 803             if (!go->neg_node || no.neg_node || (cilen != CILEN_NODEN))
 804                 goto bad;
 805             no.neg_node = 1;
 806
 807             if (treat_as_reject)
 808                 try.neg_node = 0;
 809             else if (!zero_node (p) && ao->accept_local &&
 810                      ! compare_node (p, ho->his_node))
 811                 copy_node (p, try.our_node);
 812             break;
 813
 814             /* This has never been sent. Ignore the NAK frame */
 815         case IPX_COMPRESSION_PROTOCOL:
 816             goto bad;
 817
 818         case IPX_ROUTER_PROTOCOL:
 819             if (!go->neg_router || (cilen < CILEN_PROTOCOL))
 820                 goto bad;
 821
 822             GETSHORT (s, p);
 823             if (s > 15)         /* This is just bad, but ignore for now. */
 824                 break;
 825
 826             s = BIT(s);
 827             if (no.router & s)  /* duplicate NAKs are always bad */
 828                 goto bad;
 829
 830             if (no.router == 0) /* Reset on first NAK only */
 831                 try.router = 0;
 832
 833             no.router      |= s;
 834             try.router     |= s;
 835             try.neg_router  = 1;
 836             break;
 837
 838             /* These, according to the RFC, must never be NAKed. */
 839         case IPX_ROUTER_NAME:
 840         case IPX_COMPLETE:
 841             goto bad;
 842
 843             /* These are for options which we have not seen. */
 844         default:
 845             break;
 846         }
 847         p = next;
 848     }
 849
 850     /*
 851      * Do not permit the peer to force a router protocol which we do not
 852      * support. However, default to the condition that will accept "NONE".
 853      */
 854     try.router &= (ao->router | BIT(IPX_NONE));
 855     if (try.router == 0 && ao->router != 0)
 856         try.router = BIT(IPX_NONE);
 857
 858     if (try.router != 0)
 859         try.neg_router = 1;
 860
 861     /*
 862      * OK, the Nak is good.  Now we can update state.
 863      * If there are any options left, we ignore them.
 864      */
 865     if (f->state != OPENED)
 866         *go = try;
 867
 868     return 1;
 869
 870 bad:
 871     IPXCPDEBUG(("ipxcp_nakci: received bad Nak!"));
 872     return 0;
 873 }
 874
 875 /*
 876  * ipxcp_rejci - Reject some of our CIs.
 877  */
 878 static int
 879 ipxcp_rejci(f, p, len)
 880     fsm *f;
 881     u_char *p;
 882     int len;
 883 {
 884     u_short cilen, citype, cishort;
 885     u_char cichar;
 886     u_int32_t cilong;
 887     ipxcp_options try;          /* options to request next time */
 888
 889 #define REJCINETWORK(opt, neg, val) \
 890     if (neg && p[0] == opt) { \
 891         if ((len -= CILEN_NETN) < 0) \
 892             break; \
 893         GETCHAR(citype, p); \
 894         GETCHAR(cilen, p); \
 895         if (cilen != CILEN_NETN || \
 896             citype != opt) \
 897             break; \
 898         GETLONG(cilong, p); \
 899         if (cilong != val) \
 900             break; \
 901         neg = 0; \
 902     }
 903
 904 #define REJCICHARS(opt, neg, val, cnt) \
 905     if (neg && p[0] == opt) { \
 906         int indx, count = cnt; \
 907         len -= (count + 2); \
 908         if (len < 0) \
 909             break; \
 910         GETCHAR(citype, p); \
 911         GETCHAR(cilen, p); \
 912         if (cilen != (count + 2) || \
 913             citype != opt) \
 914             break; \
 915         for (indx = 0; indx < count; ++indx) {\
 916             GETCHAR(cichar, p); \
 917             if (cichar != ((u_char *) &val)[indx]) \
 918                break; \
 919         }\
 920         if (indx != count) \
 921             break; \
 922         neg = 0; \
 923     }
 924
 925 #define REJCINODE(opt,neg,val) REJCICHARS(opt,neg,val,sizeof(val))
 926 #define REJCINAME(opt,neg,val) REJCICHARS(opt,neg,val,strlen((char *)val))
 927
 928 #define REJCIVOID(opt, neg) \
 929     if (neg && p[0] == opt) { \
 930         if ((len -= CILEN_VOID) < 0) \
 931             break; \
 932         GETCHAR(citype, p); \
 933         GETCHAR(cilen, p); \
 934         if (cilen != CILEN_VOID || citype != opt) \
 935             break; \
 936         neg = 0; \
 937     }
 938
 939 /* a reject for RIP/SAP is invalid since we don't send it and you can't
 940    reject something which is not sent. (You can NAK, but you can't REJ.) */
 941 #define REJCIPROTO(opt, neg, val, bit) \
 942     if (neg && p[0] == opt) { \
 943         if ((len -= CILEN_PROTOCOL) < 0) \
 944             break; \
 945         GETCHAR(citype, p); \
 946         GETCHAR(cilen, p); \
 947         if (cilen != CILEN_PROTOCOL) \
 948             break; \
 949         GETSHORT(cishort, p); \
 950         if (cishort != to_external (val) || cishort == RIP_SAP) \
 951             break; \
 952         neg = 0; \
 953     }
 954 /*
 955  * Any Rejected CIs must be in exactly the same order that we sent.
 956  * Check packet length and CI length at each step.
 957  * If we find any deviations, then this packet is bad.
 958  */
 959     try = *go;
 960
 961     do {
 962         REJCINETWORK (IPX_NETWORK_NUMBER,  try.neg_nn,     try.our_network);
 963         REJCINODE    (IPX_NODE_NUMBER,     try.neg_node,   try.our_node);
 964         REJCINAME    (IPX_ROUTER_NAME,     try.neg_name,   try.name);
 965         REJCIPROTO   (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 0);
 966 /*
 967  * This is the end of the record.
 968  */
 969         if (len == 0) {
 970             if (f->state != OPENED)
 971                 *go = try;
 972             return (1);
 973         }
 974     } while (0);
 975 /*
 976  * The frame is invalid at this point.
 977  */
 978     IPXCPDEBUG(("ipxcp_rejci: received bad Reject!"));
 979     return 0;
 980 }
 981
 982 /*
 983  * ipxcp_reqci - Check the peer's requested CIs and send appropriate response.
 984  *
 985  * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
 986  * appropriately.  If reject_if_disagree is non-zero, doesn't return
 987  * CONFNAK; returns CONFREJ if it can't return CONFACK.
 988  */
 989 static int
 990 ipxcp_reqci(f, inp, len, reject_if_disagree)
 991     fsm *f;
 992     u_char *inp;                /* Requested CIs */
 993     int *len;                   /* Length of requested CIs */
 994     int reject_if_disagree;
 995 {
 996     u_char *cip, *next;         /* Pointer to current and next CIs */
 997     u_short cilen, citype;      /* Parsed len, type */
 998     u_short cishort;            /* Parsed short value */
 999     u_int32_t cinetwork;        /* Parsed address values */
1000     int rc = CONFACK;           /* Final packet return code */
1001     int orc;                    /* Individual option return code */
1002     u_char *p;                  /* Pointer to next char to parse */
1003     u_char *ucp = inp;          /* Pointer to current output char */
1004     int l = *len;               /* Length left */
1005
1006     /*
1007      * Reset all his options.
1008      */
1009     BZERO(ho, sizeof(*ho));
1010
1011     /*
1012      * Process all his options.
1013      */
1014     next = inp;
1015     while (l) {
1016         orc = CONFACK;                  /* Assume success */
1017         cip = p = next;                 /* Remember begining of CI */
1018         if (l < 2 ||                    /* Not enough data for CI header or */
1019             p[1] < 2 ||                 /*  CI length too small or */
1020             p[1] > l) {                 /*  CI length too big? */
1021             IPXCPDEBUG(("ipxcp_reqci: bad CI length!"));
1022             orc = CONFREJ;              /* Reject bad CI */
1023             cilen = l;                  /* Reject till end of packet */
1024             l = 0;                      /* Don't loop again */
1025             goto endswitch;
1026         }
1027         GETCHAR(citype, p);             /* Parse CI type */
1028         GETCHAR(cilen, p);              /* Parse CI length */
1029         l -= cilen;                     /* Adjust remaining length */
1030         next += cilen;                  /* Step to next CI */
1031
1032         switch (citype) {               /* Check CI type */
1033 /*
1034  * The network number must match. Choose the larger of the two.
1035  */
1036         case IPX_NETWORK_NUMBER:
1037             /* if we wont negotiate the network number or the length is wrong
1038                then reject the option */
1039             if ( !ao->neg_nn || cilen != CILEN_NETN ) {
1040                 orc = CONFREJ;
1041                 break;
1042             }
1043             GETLONG(cinetwork, p);
1044
1045             /* If the network numbers match then acknowledge them. */
1046             if (cinetwork != 0) {
1047                 ho->his_network = cinetwork;
1048                 ho->neg_nn      = 1;
1049                 if (wo->our_network == cinetwork)
1050                     break;
1051 /*
1052  * If the network number is not given or we don't accept their change or
1053  * the network number is too small then NAK it.
1054  */
1055                 if (! ao->accept_network || cinetwork < wo->our_network) {
1056                     DECPTR (sizeof (u_int32_t), p);
1057                     PUTLONG (wo->our_network, p);
1058                     orc = CONFNAK;
1059                 }
1060                 break;
1061             }
1062 /*
1063  * The peer sent '0' for the network. Give it ours if we have one.
1064  */
1065             if (go->our_network != 0) {
1066                 DECPTR (sizeof (u_int32_t), p);
1067                 PUTLONG (wo->our_network, p);
1068                 orc = CONFNAK;
1069 /*
1070  * We don't have one. Reject the value.
1071  */
1072             } else
1073                 orc = CONFREJ;
1074
1075             break;
1076 /*
1077  * The node number is required
1078  */
1079         case IPX_NODE_NUMBER:
1080             /* if we wont negotiate the node number or the length is wrong
1081                then reject the option */
1082             if ( cilen != CILEN_NODEN ) {
1083                 orc = CONFREJ;
1084                 break;
1085             }
1086
1087             copy_node (p, ho->his_node);
1088             ho->neg_node = 1;
1089 /*
1090  * If the remote does not have a number and we do then NAK it with the value
1091  * which we have for it. (We never have a default value of zero.)
1092  */
1093             if (zero_node (ho->his_node)) {
1094                 orc = CONFNAK;
1095                 copy_node (wo->his_node, p);
1096                 INCPTR (sizeof (wo->his_node), p);
1097                 break;
1098             }
1099 /*
1100  * If you have given me the expected network node number then I'll accept
1101  * it now.
1102  */
1103             if (compare_node (wo->his_node, ho->his_node)) {
1104                 orc = CONFACK;
1105                 ho->neg_node = 1;
1106                 INCPTR (sizeof (wo->his_node), p);
1107                 break;
1108             }
1109 /*
1110  * If his node number is the same as ours then ask him to try the next
1111  * value.
1112  */
1113             if (compare_node (ho->his_node, go->our_node)) {
1114                 inc_node (ho->his_node);
1115                 orc = CONFNAK;
1116                 copy_node (ho->his_node, p);
1117                 INCPTR (sizeof (wo->his_node), p);
1118                 break;
1119             }
1120 /*
1121  * If we don't accept a new value then NAK it.
1122  */
1123             if (! ao->accept_remote) {
1124                 copy_node (wo->his_node, p);
1125                 INCPTR (sizeof (wo->his_node), p);
1126                 orc = CONFNAK;
1127                 break;
1128             }
1129             orc = CONFACK;
1130             ho->neg_node = 1;
1131             INCPTR (sizeof (wo->his_node), p);
1132             break;
1133 /*
1134  * Compression is not desired at this time. It is always rejected.
1135  */
1136         case IPX_COMPRESSION_PROTOCOL:
1137             orc = CONFREJ;
1138             break;
1139 /*
1140  * The routing protocol is a bitmask of various types. Any combination
1141  * of the values RIP_SAP and NLSP are permissible. 'IPX_NONE' for no
1142  * routing protocol must be specified only once.
1143  */
1144         case IPX_ROUTER_PROTOCOL:
1145             if ( !ao->neg_router || cilen < CILEN_PROTOCOL ) {
1146                 orc = CONFREJ;
1147                 break;
1148             }
1149
1150             GETSHORT (cishort, p);
1151
1152             if (wo->neg_router == 0) {
1153                 wo->neg_router = 1;
1154                 wo->router     = BIT(IPX_NONE);
1155             }
1156
1157             if ((cishort == IPX_NONE && ho->router != 0) ||
1158                 (ho->router & BIT(IPX_NONE))) {
1159                 orc = CONFREJ;
1160                 break;
1161             }
1162
1163             cishort = BIT(cishort);
1164             if (ho->router & cishort) {
1165                 orc = CONFREJ;
1166                 break;
1167             }
1168
1169             ho->router    |= cishort;
1170             ho->neg_router = 1;
1171
1172             /* Finally do not allow a router protocol which we do not
1173                support. */
1174
1175             if ((cishort & (ao->router | BIT(IPX_NONE))) == 0) {
1176                 int protocol;
1177
1178                 if (cishort == BIT(NLSP) &&
1179                     (ao->router & BIT(RIP_SAP)) &&
1180                     !wo->tried_rip) {
1181                     protocol      = RIP_SAP;
1182                     wo->tried_rip = 1;
1183                 } else
1184                     protocol = IPX_NONE;
1185
1186                 DECPTR (sizeof (u_int16_t), p);
1187                 PUTSHORT (protocol, p);
1188                 orc = CONFNAK;
1189             }
1190             break;
1191 /*
1192  * The router name is advisorary. Just accept it if it is not too large.
1193  */
1194         case IPX_ROUTER_NAME:
1195             if (cilen >= CILEN_NAME) {
1196                 int name_size = cilen - CILEN_NAME;
1197                 if (name_size > sizeof (ho->name))
1198                     name_size = sizeof (ho->name) - 1;
1199                 memset (ho->name, 0, sizeof (ho->name));
1200                 memcpy (ho->name, p, name_size);
1201                 ho->name [name_size] = '\0';
1202                 ho->neg_name = 1;
1203                 orc = CONFACK;
1204                 break;
1205             }
1206             orc = CONFREJ;
1207             break;
1208 /*
1209  * This is advisorary.
1210  */
1211         case IPX_COMPLETE:
1212             if (cilen != CILEN_COMPLETE)
1213                 orc = CONFREJ;
1214             else {
1215                 ho->neg_complete = 1;
1216                 orc = CONFACK;
1217             }
1218             break;
1219 /*
1220  * All other entries are not known at this time.
1221  */
1222         default:
1223             orc = CONFREJ;
1224             break;
1225         }
1226 endswitch:
1227         if (orc == CONFACK &&           /* Good CI */
1228             rc != CONFACK)              /*  but prior CI wasnt? */
1229             continue;                   /* Don't send this one */
1230
1231         if (orc == CONFNAK) {           /* Nak this CI? */
1232             if (reject_if_disagree)     /* Getting fed up with sending NAKs? */
1233                 orc = CONFREJ;          /* Get tough if so */
1234             if (rc == CONFREJ)          /* Rejecting prior CI? */
1235                 continue;               /* Don't send this one */
1236             if (rc == CONFACK) {        /* Ack'd all prior CIs? */
1237                 rc  = CONFNAK;          /* Not anymore... */
1238                 ucp = inp;              /* Backup */
1239             }
1240         }
1241
1242         if (orc == CONFREJ &&           /* Reject this CI */
1243             rc != CONFREJ) {            /*  but no prior ones? */
1244             rc = CONFREJ;
1245             ucp = inp;                  /* Backup */
1246         }
1247
1248         /* Need to move CI? */
1249         if (ucp != cip)
1250             BCOPY(cip, ucp, cilen);     /* Move it */
1251
1252         /* Update output pointer */
1253         INCPTR(cilen, ucp);
1254     }
1255
1256     /*
1257      * If we aren't rejecting this packet, and we want to negotiate
1258      * their address, and they didn't send their address, then we
1259      * send a NAK with a IPX_NODE_NUMBER option appended. We assume the
1260      * input buffer is long enough that we can append the extra
1261      * option safely.
1262      */
1263
1264     if (rc != CONFREJ && !ho->neg_node &&
1265         wo->req_nn && !reject_if_disagree) {
1266         if (rc == CONFACK) {
1267             rc = CONFNAK;
1268             wo->req_nn = 0;             /* don't ask again */
1269             ucp = inp;                  /* reset pointer */
1270         }
1271
1272         if (zero_node (wo->his_node))
1273             inc_node (wo->his_node);
1274
1275         PUTCHAR (IPX_NODE_NUMBER, ucp);
1276         PUTCHAR (CILEN_NODEN, ucp);
1277         copy_node (wo->his_node, ucp);
1278         INCPTR (sizeof (wo->his_node), ucp);
1279     }
1280
1281     *len = ucp - inp;                   /* Compute output length */
1282     IPXCPDEBUG(("ipxcp: returning Configure-%s", CODENAME(rc)));
1283     return (rc);                        /* Return final code */
1284 }
1285
1286 /*
1287  * ipxcp_up - IPXCP has come UP.
1288  *
1289  * Configure the IP network interface appropriately and bring it up.
1290  */
1291
1292 static void
1293 ipxcp_up(f)
1294     fsm *f;
1295 {
1296     int unit = f->unit;
1297
1298     IPXCPDEBUG(("ipxcp: up"));
1299
1300     /* The default router protocol is RIP/SAP. */
1301     if (ho->router == 0)
1302         ho->router = BIT(RIP_SAP);
1303
1304     if (go->router == 0)
1305         go->router = BIT(RIP_SAP);
1306
1307     /* Fetch the network number */
1308     if (!ho->neg_nn)
1309         ho->his_network = wo->his_network;
1310
1311     if (!ho->neg_node)
1312         copy_node (wo->his_node, ho->his_node);
1313
1314     if (!wo->neg_node && !go->neg_node)
1315         copy_node (wo->our_node, go->our_node);
1316
1317     if (zero_node (go->our_node)) {
1318         static char errmsg[] = "Could not determine local IPX node address";
1319         if (debug)
1320             error(errmsg);
1321         ipxcp_close(f->unit, errmsg);
1322         return;
1323     }
1324
1325     go->network = go->our_network;
1326     if (ho->his_network != 0 && ho->his_network > go->network)
1327         go->network = ho->his_network;
1328
1329     if (go->network == 0) {
1330         static char errmsg[] = "Can not determine network number";
1331         if (debug)
1332             error(errmsg);
1333         ipxcp_close (unit, errmsg);
1334         return;
1335     }
1336
1337     /* bring the interface up */
1338     if (!sifup(unit)) {
1339         if (debug)
1340             warn("sifup failed (IPX)");
1341         ipxcp_close(unit, "Interface configuration failed");
1342         return;
1343     }
1344     ipxcp_is_up = 1;
1345
1346     /* set the network number for IPX */
1347     if (!sipxfaddr(unit, go->network, go->our_node)) {
1348         if (debug)
1349             warn("sipxfaddr failed");
1350         ipxcp_close(unit, "Interface configuration failed");
1351         return;
1352     }
1353
1354     np_up(f->unit, PPP_IPX);
1355
1356     /*
1357      * Execute the ipx-up script, like this:
1358      *  /etc/ppp/ipx-up interface tty speed local-IPX remote-IPX
1359      */
1360
1361     ipxcp_script (f, _PATH_IPXUP);
1362 }
1363
1364 /*
1365  * ipxcp_down - IPXCP has gone DOWN.
1366  *
1367  * Take the IP network interface down, clear its addresses
1368  * and delete routes through it.
1369  */
1370
1371 static void
1372 ipxcp_down(f)
1373     fsm *f;
1374 {
1375     IPXCPDEBUG(("ipxcp: down"));
1376
1377     if (!ipxcp_is_up)
1378         return;
1379     ipxcp_is_up = 0;
1380     np_down(f->unit, PPP_IPX);
1381     cipxfaddr(f->unit);
1382     sifnpmode(f->unit, PPP_IPX, NPMODE_DROP);
1383     sifdown(f->unit);
1384     ipxcp_script (f, _PATH_IPXDOWN);
1385 }
1386
1387
1388 /*
1389  * ipxcp_finished - possibly shut down the lower layers.
1390  */
1391 static void
1392 ipxcp_finished(f)
1393     fsm *f;
1394 {
1395     np_finished(f->unit, PPP_IPX);
1396 }
1397
1398
1399 /*
1400  * ipxcp_script - Execute a script with arguments
1401  * interface-name tty-name speed local-IPX remote-IPX networks.
1402  */
1403 static void
1404 ipxcp_script(f, script)
1405     fsm *f;
1406     char *script;
1407 {
1408     char strspeed[32],   strlocal[32],     strremote[32];
1409     char strnetwork[32], strpid[32];
1410     char *argv[14],      strproto_lcl[32], strproto_rmt[32];
1411
1412     slprintf(strpid, sizeof(strpid), "%d", getpid());
1413     slprintf(strspeed, sizeof(strspeed),"%d", baud_rate);
1414
1415     strproto_lcl[0] = '\0';
1416     if (go->neg_router && ((go->router & BIT(IPX_NONE)) == 0)) {
1417         if (go->router & BIT(RIP_SAP))
1418             strlcpy (strproto_lcl, "RIP ", sizeof(strproto_lcl));
1419         if (go->router & BIT(NLSP))
1420             strlcat (strproto_lcl, "NLSP ", sizeof(strproto_lcl));
1421     }
1422
1423     if (strproto_lcl[0] == '\0')
1424         strlcpy (strproto_lcl, "NONE ", sizeof(strproto_lcl));
1425
1426     strproto_lcl[strlen (strproto_lcl)-1] = '\0';
1427
1428     strproto_rmt[0] = '\0';
1429     if (ho->neg_router && ((ho->router & BIT(IPX_NONE)) == 0)) {
1430         if (ho->router & BIT(RIP_SAP))
1431             strlcpy (strproto_rmt, "RIP ", sizeof(strproto_rmt));
1432         if (ho->router & BIT(NLSP))
1433             strlcat (strproto_rmt, "NLSP ", sizeof(strproto_rmt));
1434     }
1435
1436     if (strproto_rmt[0] == '\0')
1437         strlcpy (strproto_rmt, "NONE ", sizeof(strproto_rmt));
1438
1439     strproto_rmt[strlen (strproto_rmt)-1] = '\0';
1440
1441     strlcpy (strnetwork, ipx_ntoa (go->network), sizeof(strnetwork));
1442
1443     slprintf (strlocal, sizeof(strlocal), "%0.6B", go->our_node);
1444
1445     slprintf (strremote, sizeof(strremote), "%0.6B", ho->his_node);
1446
1447     argv[0]  = script;
1448     argv[1]  = ifname;
1449     argv[2]  = devnam;
1450     argv[3]  = strspeed;
1451     argv[4]  = strnetwork;
1452     argv[5]  = strlocal;
1453     argv[6]  = strremote;
1454     argv[7]  = strproto_lcl;
1455     argv[8]  = strproto_rmt;
1456     argv[9]  = (char *)go->name;
1457     argv[10] = (char *)ho->name;
1458     argv[11] = ipparam;
1459     argv[12] = strpid;
1460     argv[13] = NULL;
1461     run_program(script, argv, 0, NULL, NULL, 0);
1462 }
1463
1464 /*
1465  * ipxcp_printpkt - print the contents of an IPXCP packet.
1466  */
1467 static char *ipxcp_codenames[] = {
1468     "ConfReq", "ConfAck", "ConfNak", "ConfRej",
1469     "TermReq", "TermAck", "CodeRej"
1470 };
1471
1472 static int
1473 ipxcp_printpkt(p, plen, printer, arg)
1474     u_char *p;
1475     int plen;
1476     void (*printer) __P((void *, char *, ...));
1477     void *arg;
1478 {
1479     int code, id, len, olen;
1480     u_char *pstart, *optend;
1481     u_short cishort;
1482     u_int32_t cilong;
1483
1484     if (plen < HEADERLEN)
1485         return 0;
1486     pstart = p;
1487     GETCHAR(code, p);
1488     GETCHAR(id, p);
1489     GETSHORT(len, p);
1490     if (len < HEADERLEN || len > plen)
1491         return 0;
1492
1493     if (code >= 1 && code <= sizeof(ipxcp_codenames) / sizeof(char *))
1494         printer(arg, " %s", ipxcp_codenames[code-1]);
1495     else
1496         printer(arg, " code=0x%x", code);
1497     printer(arg, " id=0x%x", id);
1498     len -= HEADERLEN;
1499     switch (code) {
1500     case CONFREQ:
1501     case CONFACK:
1502     case CONFNAK:
1503     case CONFREJ:
1504         /* print option list */
1505         while (len >= 2) {
1506             GETCHAR(code, p);
1507             GETCHAR(olen, p);
1508             p -= 2;
1509             if (olen < CILEN_VOID || olen > len) {
1510                 break;
1511             }
1512             printer(arg, " <");
1513             len -= olen;
1514             optend = p + olen;
1515             switch (code) {
1516             case IPX_NETWORK_NUMBER:
1517                 if (olen == CILEN_NETN) {
1518                     p += 2;
1519                     GETLONG(cilong, p);
1520                     printer (arg, "network %s", ipx_ntoa (cilong));
1521                 }
1522                 break;
1523             case IPX_NODE_NUMBER:
1524                 if (olen == CILEN_NODEN) {
1525                     p += 2;
1526                     printer (arg, "node ");
1527                     while (p < optend) {
1528                         GETCHAR(code, p);
1529                         printer(arg, "%.2x", (int) (unsigned int) (unsigned char) code);
1530                     }
1531                 }
1532                 break;
1533             case IPX_COMPRESSION_PROTOCOL:
1534                 if (olen == CILEN_COMPRESS) {
1535                     p += 2;
1536                     GETSHORT (cishort, p);
1537                     printer (arg, "compression %d", (int) cishort);
1538                 }
1539                 break;
1540             case IPX_ROUTER_PROTOCOL:
1541                 if (olen == CILEN_PROTOCOL) {
1542                     p += 2;
1543                     GETSHORT (cishort, p);
1544                     printer (arg, "router proto %d", (int) cishort);
1545                 }
1546                 break;
1547             case IPX_ROUTER_NAME:
1548                 if (olen >= CILEN_NAME) {
1549                     p += 2;
1550                     printer (arg, "router name \"");
1551                     while (p < optend) {
1552                         GETCHAR(code, p);
1553                         if (code >= 0x20 && code <= 0x7E)
1554                             printer (arg, "%c", (int) (unsigned int) (unsigned char) code);
1555                         else
1556                             printer (arg, " \\%.2x", (int) (unsigned int) (unsigned char) code);
1557                     }
1558                     printer (arg, "\"");
1559                 }
1560                 break;
1561             case IPX_COMPLETE:
1562                 if (olen == CILEN_COMPLETE) {
1563                     p += 2;
1564                     printer (arg, "complete");
1565                 }
1566                 break;
1567             default:
1568                 break;
1569             }
1570
1571             while (p < optend) {
1572                 GETCHAR(code, p);
1573                 printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code);
1574             }
1575             printer(arg, ">");
1576         }
1577         break;
1578
1579     case TERMACK:
1580     case TERMREQ:
1581         if (len > 0 && *p >= ' ' && *p < 0x7f) {
1582             printer(arg, " ");
1583             print_string((char *)p, len, printer, arg);
1584             p += len;
1585             len = 0;
1586         }
1587         break;
1588     }
1589
1590     /* print the rest of the bytes in the packet */
1591     for (; len > 0; --len) {
1592         GETCHAR(code, p);
1593         printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code);
1594     }
1595
1596     return p - pstart;
1597 }
1598 #endif /* ifdef IPX_CHANGE */