usr.sbin/rbootd/rmpproto.c

   1 /*      $NetBSD: rmpproto.c,v 1.13 2003/08/07 11:25:41 agc Exp $        */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * the Center for Software Science of the University of Utah Computer
   9  * Science Department.  CSS requests users of this software to return
  10  * to css-dist@cs.utah.edu any improvements that they make and grant
  11  * CSS redistribution rights.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  *      from: @(#)rmpproto.c    8.1 (Berkeley) 6/4/93
  38  *
  39  * From: Utah Hdr: rmpproto.c 3.1 92/07/06
  40  * Author: Jeff Forys, University of Utah CSS
  41  */
  42
  43 /*
  44  * Copyright (c) 1988, 1992 The University of Utah and the Center
  45  *      for Software Science (CSS).
  46  *
  47  * This code is derived from software contributed to Berkeley by
  48  * the Center for Software Science of the University of Utah Computer
  49  * Science Department.  CSS requests users of this software to return
  50  * to css-dist@cs.utah.edu any improvements that they make and grant
  51  * CSS redistribution rights.
  52  *
  53  * Redistribution and use in source and binary forms, with or without
  54  * modification, are permitted provided that the following conditions
  55  * are met:
  56  * 1. Redistributions of source code must retain the above copyright
  57  *    notice, this list of conditions and the following disclaimer.
  58  * 2. Redistributions in binary form must reproduce the above copyright
  59  *    notice, this list of conditions and the following disclaimer in the
  60  *    documentation and/or other materials provided with the distribution.
  61  * 3. All advertising materials mentioning features or use of this software
  62  *    must display the following acknowledgement:
  63  *      This product includes software developed by the University of
  64  *      California, Berkeley and its contributors.
  65  * 4. Neither the name of the University nor the names of its contributors
  66  *    may be used to endorse or promote products derived from this software
  67  *    without specific prior written permission.
  68  *
  69  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  70  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  71  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  72  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  73  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  74  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  75  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  76  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  77  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  78  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  79  * SUCH DAMAGE.
  80  *
  81  *      from: @(#)rmpproto.c    8.1 (Berkeley) 6/4/93
  82  *
  83  * From: Utah Hdr: rmpproto.c 3.1 92/07/06
  84  * Author: Jeff Forys, University of Utah CSS
  85  */
  86
  87 #include <sys/cdefs.h>
  88 #ifndef lint
  89 #if 0
  90 static char sccsid[] = "@(#)rmpproto.c  8.1 (Berkeley) 6/4/93";
  91 #else
  92 __RCSID("$NetBSD: rmpproto.c,v 1.13 2003/08/07 11:25:41 agc Exp $");
  93 #endif
  94 #endif /* not lint */
  95
  96 #include <sys/param.h>
  97 #include <sys/time.h>
  98
  99 #include <errno.h>
 100 #include <fcntl.h>
 101 #include <stdio.h>
 102 #include <string.h>
 103 #include <syslog.h>
 104 #include <unistd.h>
 105 #include "defs.h"
 106
 107 /*
 108 **  ProcessPacket -- determine packet type and do what's required.
 109 **
 110 **      An RMP BOOT packet has been received.  Look at the type field
 111 **      and process Boot Requests, Read Requests, and Boot Complete
 112 **      packets.  Any other type will be dropped with a warning msg.
 113 **
 114 **      Parameters:
 115 **              rconn - the new connection
 116 **              client - list of files available to this host
 117 **
 118 **      Returns:
 119 **              Nothing.
 120 **
 121 **      Side Effects:
 122 **              - If this is a valid boot request, it will be added to
 123 **                the linked list of outstanding requests (RmpConns).
 124 **              - If this is a valid boot complete, its associated
 125 **                entry in RmpConns will be deleted.
 126 **              - Also, unless we run out of memory, a reply will be
 127 **                sent to the host that sent the packet.
 128 */
 129 void
 130 ProcessPacket(rconn, client)
 131         RMPCONN *rconn;
 132         CLIENT *client;
 133 {
 134         struct rmp_packet *rmp;
 135         RMPCONN *rconnout;
 136
 137         rmp = &rconn->rmp;              /* cache pointer to RMP packet */
 138
 139         switch(rmp->r_type) {           /* do what we came here to do */
 140                 case RMP_BOOT_REQ:              /* boot request */
 141                         if ((rconnout = NewConn(rconn)) == NULL)
 142                                 return;
 143
 144                         /*
 145                          *  If the Session ID is 0xffff, this is a "probe"
 146                          *  packet and we do not want to add the connection
 147                          *  to the linked list of active connections.  There
 148                          *  are two types of probe packets, if the Sequence
 149                          *  Number is 0 they want to know our host name, o/w
 150                          *  they want the name of the file associated with
 151                          *  the number spec'd by the Sequence Number.
 152                          *
 153                          *  If this is an actual boot request, open the file
 154                          *  and send a reply.  If SendBootRepl() does not
 155                          *  return 0, add the connection to the linked list
 156                          *  of active connections, otherwise delete it since
 157                          *  an error was encountered.
 158                          */
 159                         if (ntohs(rmp->r_brq.rmp_session) == RMP_PROBESID) {
 160                                 if (WORDZE(rmp->r_brq.rmp_seqno))
 161                                         (void) SendServerID(rconnout);
 162                                 else
 163                                         (void) SendFileNo(rmp, rconnout,
 164                                                           client? client->files:
 165                                                                   BootFiles);
 166                                 FreeConn(rconnout);
 167                         } else {
 168                                 if (SendBootRepl(rmp, rconnout,
 169                                     client? client->files: BootFiles))
 170                                         AddConn(rconnout);
 171                                 else
 172                                         FreeConn(rconnout);
 173                         }
 174                         break;
 175
 176                 case RMP_BOOT_REPL:             /* boot reply (not valid) */
 177                         syslog(LOG_WARNING, "%s: sent a boot reply",
 178                                EnetStr(rconn));
 179                         break;
 180
 181                 case RMP_READ_REQ:              /* read request */
 182                         /*
 183                          *  Send a portion of the boot file.
 184                          */
 185                         (void) SendReadRepl(rconn);
 186                         break;
 187
 188                 case RMP_READ_REPL:             /* read reply (not valid) */
 189                         syslog(LOG_WARNING, "%s: sent a read reply",
 190                                EnetStr(rconn));
 191                         break;
 192
 193                 case RMP_BOOT_DONE:             /* boot complete */
 194                         /*
 195                          *  Remove the entry from the linked list of active
 196                          *  connections.
 197                          */
 198                         (void) BootDone(rconn);
 199                         break;
 200
 201                 default:                        /* unknown RMP packet type */
 202                         syslog(LOG_WARNING, "%s: unknown packet type (%u)",
 203                                EnetStr(rconn), rmp->r_type);
 204         }
 205 }
 206
 207 /*
 208 **  SendServerID -- send our host name to who ever requested it.
 209 **
 210 **      Parameters:
 211 **              rconn - the reply packet to be formatted.
 212 **
 213 **      Returns:
 214 **              1 on success, 0 on failure.
 215 **
 216 **      Side Effects:
 217 **              none.
 218 */
 219 int
 220 SendServerID(rconn)
 221         RMPCONN *rconn;
 222 {
 223         struct rmp_packet *rpl;
 224         char *src, *dst;
 225         u_int8_t *size;
 226
 227         rpl = &rconn->rmp;                      /* cache ptr to RMP packet */
 228
 229         /*
 230          *  Set up assorted fields in reply packet.
 231          */
 232         rpl->r_brpl.rmp_type = RMP_BOOT_REPL;
 233         rpl->r_brpl.rmp_retcode = RMP_E_OKAY;
 234         ZEROWORD(rpl->r_brpl.rmp_seqno);
 235         rpl->r_brpl.rmp_session = 0;
 236         rpl->r_brpl.rmp_version = htons(RMP_VERSION);
 237
 238         size = &rpl->r_brpl.rmp_flnmsize;       /* ptr to length of host name */
 239
 240         /*
 241          *  Copy our host name into the reply packet incrementing the
 242          *  length as we go.  Stop at RMP_HOSTLEN or the first dot.
 243          */
 244         src = MyHost;
 245         dst = (char *) &rpl->r_brpl.rmp_flnm;
 246         for (*size = 0; *size < RMP_HOSTLEN; (*size)++) {
 247                 if (*src == '.' || *src == '\0')
 248                         break;
 249                 *dst++ = *src++;
 250         }
 251
 252         rconn->rmplen = RMPBOOTSIZE(*size);     /* set packet length */
 253
 254         return(SendPacket(rconn));              /* send packet */
 255 }
 256
 257 /*
 258 **  SendFileNo -- send the name of a bootable file to the requester.
 259 **
 260 **      Parameters:
 261 **              req - RMP BOOT packet containing the request.
 262 **              rconn - the reply packet to be formatted.
 263 **              filelist - list of files available to the requester.
 264 **
 265 **      Returns:
 266 **              1 on success, 0 on failure.
 267 **
 268 **      Side Effects:
 269 **              none.
 270 */
 271 int
 272 SendFileNo(req, rconn, filelist)
 273         struct rmp_packet *req;
 274         RMPCONN *rconn;
 275         char *filelist[];
 276 {
 277         struct rmp_packet *rpl;
 278         char *src, *dst;
 279         u_int8_t *size;
 280         int i;
 281
 282         GETWORD(req->r_brpl.rmp_seqno, i);      /* SeqNo is really FileNo */
 283         rpl = &rconn->rmp;                      /* cache ptr to RMP packet */
 284
 285         /*
 286          *  Set up assorted fields in reply packet.
 287          */
 288         rpl->r_brpl.rmp_type = RMP_BOOT_REPL;
 289         PUTWORD(i, rpl->r_brpl.rmp_seqno);
 290         i--;
 291         rpl->r_brpl.rmp_session = 0;
 292         rpl->r_brpl.rmp_version = htons(RMP_VERSION);
 293
 294         size = &rpl->r_brpl.rmp_flnmsize;       /* ptr to length of filename */
 295         *size = 0;                              /* init length to zero */
 296
 297         /*
 298          *  Copy the file name into the reply packet incrementing the
 299          *  length as we go.  Stop at end of string or when RMPBOOTDATA
 300          *  characters have been copied.  Also, set return code to
 301          *  indicate success or "no more files".
 302          */
 303         if (i < C_MAXFILE && filelist[i] != NULL) {
 304                 src = filelist[i];
 305                 dst = (char *)&rpl->r_brpl.rmp_flnm;
 306                 for (; *src && *size < RMPBOOTDATA; (*size)++) {
 307                         if (*src == '\0')
 308                                 break;
 309                         *dst++ = *src++;
 310                 }
 311                 rpl->r_brpl.rmp_retcode = RMP_E_OKAY;
 312         } else
 313                 rpl->r_brpl.rmp_retcode = RMP_E_NODFLT;
 314
 315         rconn->rmplen = RMPBOOTSIZE(*size);     /* set packet length */
 316
 317         return(SendPacket(rconn));              /* send packet */
 318 }
 319
 320 /*
 321 **  SendBootRepl -- open boot file and respond to boot request.
 322 **
 323 **      Parameters:
 324 **              req - RMP BOOT packet containing the request.
 325 **              rconn - the reply packet to be formatted.
 326 **              filelist - list of files available to the requester.
 327 **
 328 **      Returns:
 329 **              1 on success, 0 on failure.
 330 **
 331 **      Side Effects:
 332 **              none.
 333 */
 334 int
 335 SendBootRepl(req, rconn, filelist)
 336         struct rmp_packet *req;
 337         RMPCONN *rconn;
 338         char *filelist[];
 339 {
 340         int retval;
 341         char *filename, filepath[RMPBOOTDATA+1];
 342         RMPCONN *oldconn;
 343         struct rmp_packet *rpl;
 344         char *src, *dst1, *dst2;
 345         u_int8_t i;
 346
 347         /*
 348          *  If another connection already exists, delete it since we
 349          *  are obviously starting again.
 350          */
 351         if ((oldconn = FindConn(rconn)) != NULL) {
 352                 syslog(LOG_WARNING, "%s: dropping existing connection",
 353                        EnetStr(oldconn));
 354                 RemoveConn(oldconn);
 355         }
 356
 357         rpl = &rconn->rmp;                      /* cache ptr to RMP packet */
 358
 359         /*
 360          *  Set up assorted fields in reply packet.
 361          */
 362         rpl->r_brpl.rmp_type = RMP_BOOT_REPL;
 363         COPYWORD(req->r_brq.rmp_seqno, rpl->r_brpl.rmp_seqno);
 364         rpl->r_brpl.rmp_session = htons(GenSessID());
 365         rpl->r_brpl.rmp_version = htons(RMP_VERSION);
 366         rpl->r_brpl.rmp_flnmsize = req->r_brq.rmp_flnmsize;
 367
 368         /*
 369          *  Copy file name to `filepath' string, and into reply packet.
 370          */
 371         dst1 = filepath;
 372         dst2 = &rpl->r_brpl.rmp_flnm;
 373         if (req->r_brq.rmp_flnmsize)
 374                 src = &req->r_brq.rmp_flnm;
 375         else {
 376                 /* no file supplied, substitute the first one */
 377                 src = filelist[0];
 378                 req->r_brq.rmp_flnmsize = strlen(src);
 379         }
 380         for (i = 0; i < req->r_brq.rmp_flnmsize; i++)
 381                 *dst1++ = *dst2++ = *src++;
 382         *dst1 = '\0';
 383
 384         /*
 385          *  If we are booting HP-UX machines, their secondary loader will
 386          *  ask for files like "/hp-ux".  As a security measure, we do not
 387          *  allow boot files to lay outside the boot directory (unless they
 388          *  are purposely link'd out.  So, make `filename' become the path-
 389          *  stripped file name and spoof the client into thinking that it
 390          *  really got what it wanted.
 391          */
 392         if ((filename = strrchr(filepath,'/')) != NULL)
 393                 filename++;
 394         else
 395                 filename = filepath;
 396
 397         /*
 398          *  Check that this is a valid boot file name.
 399          */
 400         for (i = 0; i < C_MAXFILE && filelist[i] != NULL; i++)
 401                 if (STREQN(filename, filelist[i]))
 402                         goto match;
 403
 404         /*
 405          *  Invalid boot file name, set error and send reply packet.
 406          */
 407         rpl->r_brpl.rmp_retcode = RMP_E_NOFILE;
 408         retval = 0;
 409         goto sendpkt;
 410
 411 match:
 412         /*
 413          *  This is a valid boot file.  Open the file and save the file
 414          *  descriptor associated with this connection and set success
 415          *  indication.  If the file couldnt be opened, set error:
 416          *      "no such file or dir" - RMP_E_NOFILE
 417          *      "file table overflow" - RMP_E_BUSY
 418          *      "too many open files" - RMP_E_BUSY
 419          *      anything else         - RMP_E_OPENFILE
 420          */
 421         if ((rconn->bootfd = open(filename, O_RDONLY, 0600)) < 0) {
 422                 rpl->r_brpl.rmp_retcode = (errno == ENOENT)? RMP_E_NOFILE:
 423                         (errno == EMFILE || errno == ENFILE)? RMP_E_BUSY:
 424                         RMP_E_OPENFILE;
 425                 retval = 0;
 426         } else {
 427                 rpl->r_brpl.rmp_retcode = RMP_E_OKAY;
 428                 retval = 1;
 429         }
 430
 431 sendpkt:
 432         syslog(LOG_INFO, "%s: request to boot %s (%s)",
 433                EnetStr(rconn), filename, retval? "granted": "denied");
 434
 435         rconn->rmplen = RMPBOOTSIZE(rpl->r_brpl.rmp_flnmsize);
 436
 437         return (retval & SendPacket(rconn));
 438 }
 439
 440 /*
 441 **  SendReadRepl -- send a portion of the boot file to the requester.
 442 **
 443 **      Parameters:
 444 **              rconn - the reply packet to be formatted.
 445 **
 446 **      Returns:
 447 **              1 on success, 0 on failure.
 448 **
 449 **      Side Effects:
 450 **              none.
 451 */
 452 int
 453 SendReadRepl(rconn)
 454         RMPCONN *rconn;
 455 {
 456         int retval = 0;
 457         RMPCONN *oldconn;
 458         struct rmp_packet *rpl, *req;
 459         int size = 0;
 460         int madeconn = 0;
 461
 462         /*
 463          *  Find the old connection.  If one doesnt exist, create one only
 464          *  to return the error code.
 465          */
 466         if ((oldconn = FindConn(rconn)) == NULL) {
 467                 if ((oldconn = NewConn(rconn)) == NULL)
 468                         return(0);
 469                 syslog(LOG_ERR, "SendReadRepl: no active connection (%s)",
 470                        EnetStr(rconn));
 471                 madeconn++;
 472         }
 473
 474         req = &rconn->rmp;              /* cache ptr to request packet */
 475         rpl = &oldconn->rmp;            /* cache ptr to reply packet */
 476
 477         if (madeconn) {                 /* no active connection above; abort */
 478                 rpl->r_rrpl.rmp_retcode = RMP_E_ABORT;
 479                 retval = 1;
 480                 goto sendpkt;
 481         }
 482
 483         /*
 484          *  Make sure Session ID's match.
 485          */
 486         if (ntohs(req->r_rrq.rmp_session) !=
 487             ((rpl->r_type == RMP_BOOT_REPL)? ntohs(rpl->r_brpl.rmp_session):
 488                                              ntohs(rpl->r_rrpl.rmp_session))) {
 489                 syslog(LOG_ERR, "SendReadRepl: bad session id (%s)",
 490                        EnetStr(rconn));
 491                 rpl->r_rrpl.rmp_retcode = RMP_E_BADSID;
 492                 retval = 1;
 493                 goto sendpkt;
 494         }
 495
 496         /*
 497          *  If the requester asks for more data than we can fit,
 498          *  silently clamp the request size down to RMPREADDATA.
 499          *
 500          *  N.B. I do not know if this is "legal", however it seems
 501          *  to work.  This is necessary for bpfwrite() on machines
 502          *  with MCLBYTES less than 1514.
 503          */
 504         if (ntohs(req->r_rrq.rmp_size) > RMPREADDATA)
 505                 req->r_rrq.rmp_size = htons(RMPREADDATA);
 506
 507         /*
 508          *  Position read head on file according to info in request packet.
 509          */
 510         GETWORD(req->r_rrq.rmp_offset, size);
 511         if (lseek(oldconn->bootfd, (off_t)size, SEEK_SET) < 0) {
 512                 syslog(LOG_ERR, "SendReadRepl: lseek: %m (%s)",
 513                        EnetStr(rconn));
 514                 rpl->r_rrpl.rmp_retcode = RMP_E_ABORT;
 515                 retval = 1;
 516                 goto sendpkt;
 517         }
 518
 519         /*
 520          *  Read data directly into reply packet.
 521          */
 522         if ((size = read(oldconn->bootfd, &rpl->r_rrpl.rmp_data,
 523                          (int) ntohs(req->r_rrq.rmp_size))) <= 0) {
 524                 if (size < 0) {
 525                         syslog(LOG_ERR, "SendReadRepl: read: %m (%s)",
 526                                EnetStr(rconn));
 527                         rpl->r_rrpl.rmp_retcode = RMP_E_ABORT;
 528                 } else {
 529                         rpl->r_rrpl.rmp_retcode = RMP_E_EOF;
 530                 }
 531                 retval = 1;
 532                 goto sendpkt;
 533         }
 534
 535         /*
 536          *  Set success indication.
 537          */
 538         rpl->r_rrpl.rmp_retcode = RMP_E_OKAY;
 539
 540 sendpkt:
 541         /*
 542          *  Set up assorted fields in reply packet.
 543          */
 544         rpl->r_rrpl.rmp_type = RMP_READ_REPL;
 545         COPYWORD(req->r_rrq.rmp_offset, rpl->r_rrpl.rmp_offset);
 546         rpl->r_rrpl.rmp_session = req->r_rrq.rmp_session;
 547
 548         oldconn->rmplen = RMPREADSIZE(size);    /* set size of packet */
 549
 550         retval &= SendPacket(oldconn);          /* send packet */
 551
 552         if (madeconn)                           /* clean up after ourself */
 553                 FreeConn(oldconn);
 554
 555         return (retval);
 556 }
 557
 558 /*
 559 **  BootDone -- free up memory allocated for a connection.
 560 **
 561 **      Parameters:
 562 **              rconn - incoming boot complete packet.
 563 **
 564 **      Returns:
 565 **              1 on success, 0 on failure.
 566 **
 567 **      Side Effects:
 568 **              none.
 569 */
 570 int
 571 BootDone(rconn)
 572         RMPCONN *rconn;
 573 {
 574         RMPCONN *oldconn;
 575         struct rmp_packet *rpl;
 576
 577         /*
 578          *  If we cant find the connection, ignore the request.
 579          */
 580         if ((oldconn = FindConn(rconn)) == NULL) {
 581                 syslog(LOG_ERR, "BootDone: no existing connection (%s)",
 582                        EnetStr(rconn));
 583                 return(0);
 584         }
 585
 586         rpl = &oldconn->rmp;                    /* cache ptr to RMP packet */
 587
 588         /*
 589          *  Make sure Session ID's match.
 590          */
 591         if (ntohs(rconn->rmp.r_rrq.rmp_session) !=
 592             ((rpl->r_type == RMP_BOOT_REPL)? ntohs(rpl->r_brpl.rmp_session):
 593                                             ntohs(rpl->r_rrpl.rmp_session))) {
 594                 syslog(LOG_ERR, "BootDone: bad session id (%s)",
 595                        EnetStr(rconn));
 596                 return(0);
 597         }
 598
 599         RemoveConn(oldconn);                    /* remove connection */
 600
 601         syslog(LOG_INFO, "%s: boot complete", EnetStr(rconn));
 602
 603         return(1);
 604 }
 605
 606 /*
 607 **  SendPacket -- send an RMP packet to a remote host.
 608 **
 609 **      Parameters:
 610 **              rconn - packet to be sent.
 611 **
 612 **      Returns:
 613 **              1 on success, 0 on failure.
 614 **
 615 **      Side Effects:
 616 **              none.
 617 */
 618 int
 619 SendPacket(rconn)
 620         RMPCONN *rconn;
 621 {
 622         /*
 623          *  Set Ethernet Destination address to Source (BPF and the enet
 624          *  driver will take care of getting our source address set).
 625          */
 626         memmove((char *)&rconn->rmp.hp_hdr.daddr[0],
 627             (char *)&rconn->rmp.hp_hdr.saddr[0], RMP_ADDRLEN);
 628         rconn->rmp.hp_hdr.len = htons(rconn->rmplen - sizeof(struct hp_hdr));
 629
 630         /*
 631          *  Reverse 802.2/HP Extended Source & Destination Access Pts.
 632          */
 633         rconn->rmp.hp_llc.dxsap = htons(HPEXT_SXSAP);
 634         rconn->rmp.hp_llc.sxsap = htons(HPEXT_DXSAP);
 635
 636         /*
 637          *  Last time this connection was active.
 638          */
 639         (void) gettimeofday(&rconn->tstamp, (struct timezone *)0);
 640
 641         if (DbgFp != NULL)                      /* display packet */
 642                 DispPkt(rconn,DIR_SENT);
 643
 644         /*
 645          *  Send RMP packet to remote host.
 646          */
 647         return(BpfWrite(rconn));
 648 }