summaryrefslogtreecommitdiffstats
path: root/usr.sbin/ppp/radius.c
blob: dc71ab31671195391abfdbf55b02a1093943a762 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
/*
 * Copyright 1999 Internet Business Solutions Ltd., Switzerland
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 *
 */

#include <stdint.h>
#include <sys/param.h>

#include <sys/select.h>
#include <sys/socket.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <sys/un.h>
#include <net/route.h>

#ifdef LOCALRAD
#include "radlib.h"
#include "radlib_vs.h"
#else
#include <radlib.h>
#include <radlib_vs.h>
#endif

#include <errno.h>
#ifndef NODES
#include <md5.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <termios.h>
#include <unistd.h>
#include <netdb.h>

#include "layer.h"
#include "defs.h"
#include "log.h"
#include "descriptor.h"
#include "prompt.h"
#include "timer.h"
#include "fsm.h"
#include "iplist.h"
#include "slcompress.h"
#include "throughput.h"
#include "lqr.h"
#include "hdlc.h"
#include "mbuf.h"
#include "ncpaddr.h"
#include "ip.h"
#include "ipcp.h"
#include "ipv6cp.h"
#include "route.h"
#include "command.h"
#include "filter.h"
#include "lcp.h"
#include "ccp.h"
#include "link.h"
#include "mp.h"
#include "radius.h"
#include "auth.h"
#include "async.h"
#include "physical.h"
#include "chat.h"
#include "cbcp.h"
#include "chap.h"
#include "datalink.h"
#include "ncp.h"
#include "bundle.h"
#include "proto.h"
#include "iface.h"

#ifndef NODES
struct mschap_response {
  u_char ident;
  u_char flags;
  u_char lm_response[24];
  u_char nt_response[24];
};

struct mschap2_response {
  u_char ident;
  u_char flags;
  u_char pchallenge[16];
  u_char reserved[8];
  u_char response[24];
};

#define	AUTH_LEN	16
#define	SALT_LEN	2
#endif

static const char *
radius_policyname(int policy)
{
  switch(policy) {
  case MPPE_POLICY_ALLOWED:
    return "Allowed";
  case MPPE_POLICY_REQUIRED:
    return "Required";
  }
  return NumStr(policy, NULL, 0);
}

static const char *
radius_typesname(int types)
{
  switch(types) {
  case MPPE_TYPE_40BIT:
    return "40 bit";
  case MPPE_TYPE_128BIT:
    return "128 bit";
  case MPPE_TYPE_40BIT|MPPE_TYPE_128BIT:
    return "40 or 128 bit";
  }
  return NumStr(types, NULL, 0);
}

#ifndef NODES
static void
demangle(struct radius *r, const void *mangled, size_t mlen,
         char **buf, size_t *len)
{
  char R[AUTH_LEN];		/* variable names as per rfc2548 */
  const char *S;
  u_char b[16];
  const u_char *A, *C;
  MD5_CTX Context;
  int Slen, i, Clen, Ppos;
  u_char *P;

  if (mlen % 16 != SALT_LEN) {
    log_Printf(LogWARN, "Cannot interpret mangled data of length %ld\n",
               (u_long)mlen);
    *buf = NULL;
    *len = 0;
    return;
  }

  /* We need the RADIUS Request-Authenticator */
  if (rad_request_authenticator(r->cx.rad, R, sizeof R) != AUTH_LEN) {
    log_Printf(LogWARN, "Cannot obtain the RADIUS request authenticator\n");
    *buf = NULL;
    *len = 0;
    return;
  }

  A = (const u_char *)mangled;			/* Salt comes first */
  C = (const u_char *)mangled + SALT_LEN;	/* Then the ciphertext */
  Clen = mlen - SALT_LEN;
  S = rad_server_secret(r->cx.rad);		/* We need the RADIUS secret */
  Slen = strlen(S);
  P = alloca(Clen);				/* We derive our plaintext */

  MD5Init(&Context);
  MD5Update(&Context, S, Slen);
  MD5Update(&Context, R, AUTH_LEN);
  MD5Update(&Context, A, SALT_LEN);
  MD5Final(b, &Context);
  Ppos = 0;

  while (Clen) {
    Clen -= 16;

    for (i = 0; i < 16; i++)
      P[Ppos++] = C[i] ^ b[i];

    if (Clen) {
      MD5Init(&Context);
      MD5Update(&Context, S, Slen);
      MD5Update(&Context, C, 16);
      MD5Final(b, &Context);
    }

    C += 16;
  }

  /*
   * The resulting plain text consists of a one-byte length, the text and
   * maybe some padding.
   */
  *len = *P;
  if (*len > mlen - 1) {
    log_Printf(LogWARN, "Mangled data seems to be garbage\n");
    *buf = NULL;
    *len = 0;
    return;
  }

  if ((*buf = malloc(*len)) == NULL) {
    log_Printf(LogWARN, "demangle: Out of memory (%lu bytes)\n", (u_long)*len);
    *len = 0;
  } else
    memcpy(*buf, P + 1, *len);
}
#endif

/* XXX: This should go into librarius. */
#ifndef NOINET6
static uint8_t *
rad_cvt_ipv6prefix(const void *data, size_t len)
{
	const size_t ipv6len = sizeof(struct in6_addr) + 2;
	uint8_t *s;

	if (len > ipv6len)
		return NULL;
	s = malloc(ipv6len);
	if (s != NULL) {
		memset(s, 0, ipv6len);
		memcpy(s, data, len);
	}
	return s;
}
#endif

/*
 * rad_continue_send_request() has given us `got' (non-zero).  Deal with it.
 */
static void
radius_Process(struct radius *r, int got)
{
  char *argv[MAXARGS], *nuke;
  struct bundle *bundle;
  int argc, addrs, res, width;
  size_t len;
  struct ncprange dest;
  struct ncpaddr gw;
  const void *data;
  const char *stype;
  u_int32_t ipaddr, vendor;
  struct in_addr ip;
#ifndef NOINET6
  uint8_t ipv6addr[INET6_ADDRSTRLEN];
  struct in6_addr ip6;
#endif

  r->cx.fd = -1;		/* Stop select()ing */
  stype = r->cx.auth ? "auth" : "acct";

  switch (got) {
    case RAD_ACCESS_ACCEPT:
      log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		 "Radius(%s): ACCEPT received\n", stype);
      if (!r->cx.auth) {
        rad_close(r->cx.rad);
        return;
      }
      break;

    case RAD_ACCESS_REJECT:
      log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		 "Radius(%s): REJECT received\n", stype);
      if (!r->cx.auth) {
        rad_close(r->cx.rad);
        return;
      }
      break;

    case RAD_ACCESS_CHALLENGE:
      /* we can't deal with this (for now) ! */
      log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		 "Radius: CHALLENGE received (can't handle yet)\n");
      if (r->cx.auth)
        auth_Failure(r->cx.auth);
      rad_close(r->cx.rad);
      return;

    case RAD_ACCOUNTING_RESPONSE:
      /*
       * It's probably not ideal to log this at PHASE level as we'll see
       * too much stuff going to the log when ``set rad_alive'' is used.
       * So we differ from older behaviour (ppp version 3.1 and before)
       * and just log accounting responses to LogRADIUS.
       */
      log_Printf(LogRADIUS, "Radius(%s): Accounting response received\n",
		 stype);
      if (r->cx.auth)
        auth_Failure(r->cx.auth);		/* unexpected !!! */

      /* No further processing for accounting requests, please */
      rad_close(r->cx.rad);
      return;

    case -1:
      log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		 "radius(%s): %s\n", stype, rad_strerror(r->cx.rad));
      if (r->cx.auth)
        auth_Failure(r->cx.auth);
      rad_close(r->cx.rad);
      return;

    default:
      log_Printf(LogERROR, "rad_send_request(%s): Failed %d: %s\n", stype,
                 got, rad_strerror(r->cx.rad));
      if (r->cx.auth)
        auth_Failure(r->cx.auth);
      rad_close(r->cx.rad);
      return;
  }

  /* Let's see what we've got in our reply */
  r->ip.s_addr = r->mask.s_addr = INADDR_NONE;
  r->mtu = 0;
  r->vj = 0;
  while ((res = rad_get_attr(r->cx.rad, &data, &len)) > 0) {
    switch (res) {
      case RAD_FRAMED_IP_ADDRESS:
        r->ip = rad_cvt_addr(data);
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " IP %s\n", inet_ntoa(r->ip));
        break;

      case RAD_FILTER_ID:
        free(r->filterid);
        if ((r->filterid = rad_cvt_string(data, len)) == NULL) {
          log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad));
          auth_Failure(r->cx.auth);
          rad_close(r->cx.rad);
          return;
        }
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " Filter \"%s\"\n", r->filterid);
        break;

      case RAD_SESSION_TIMEOUT:
        r->sessiontime = rad_cvt_int(data);
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " Session-Timeout %lu\n", r->sessiontime);
        break;

      case RAD_FRAMED_IP_NETMASK:
        r->mask = rad_cvt_addr(data);
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " Netmask %s\n", inet_ntoa(r->mask));
        break;

      case RAD_FRAMED_MTU:
        r->mtu = rad_cvt_int(data);
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " MTU %lu\n", r->mtu);
        break;

      case RAD_FRAMED_ROUTING:
        /* Disabled for now - should we automatically set up some filters ? */
        /* rad_cvt_int(data); */
        /* bit 1 = Send routing packets */
        /* bit 2 = Receive routing packets */
        break;

      case RAD_FRAMED_COMPRESSION:
        r->vj = rad_cvt_int(data) == 1 ? 1 : 0;
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " VJ %sabled\n", r->vj ? "en" : "dis");
        break;

      case RAD_FRAMED_ROUTE:
        /*
         * We expect a string of the format ``dest[/bits] gw [metrics]''
         * Any specified metrics are ignored.  MYADDR and HISADDR are
         * understood for ``dest'' and ``gw'' and ``0.0.0.0'' is the same
         * as ``HISADDR''.
         */

        if ((nuke = rad_cvt_string(data, len)) == NULL) {
          log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad));
          auth_Failure(r->cx.auth);
          rad_close(r->cx.rad);
          return;
        }

	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " Route: %s\n", nuke);
        bundle = r->cx.auth->physical->dl->bundle;
        ip.s_addr = INADDR_ANY;
        ncpaddr_setip4(&gw, ip);
        ncprange_setip4host(&dest, ip);
        argc = command_Interpret(nuke, strlen(nuke), argv);
        if (argc < 0)
          log_Printf(LogWARN, "radius: %s: Syntax error\n",
                     argc == 1 ? argv[0] : "\"\"");
        else if (argc < 2)
          log_Printf(LogWARN, "radius: %s: Invalid route\n",
                     argc == 1 ? argv[0] : "\"\"");
        else if ((strcasecmp(argv[0], "default") != 0 &&
                  !ncprange_aton(&dest, &bundle->ncp, argv[0])) ||
                 !ncpaddr_aton(&gw, &bundle->ncp, argv[1]))
          log_Printf(LogWARN, "radius: %s %s: Invalid route\n",
                     argv[0], argv[1]);
        else {
          ncprange_getwidth(&dest, &width);
          if (width == 32 && strchr(argv[0], '/') == NULL) {
            /* No mask specified - use the natural mask */
            ncprange_getip4addr(&dest, &ip);
            ncprange_setip4mask(&dest, addr2mask(ip));
          }
          addrs = 0;

          if (!strncasecmp(argv[0], "HISADDR", 7))
            addrs = ROUTE_DSTHISADDR;
          else if (!strncasecmp(argv[0], "MYADDR", 6))
            addrs = ROUTE_DSTMYADDR;

          if (ncpaddr_getip4addr(&gw, &ipaddr) && ipaddr == INADDR_ANY) {
            addrs |= ROUTE_GWHISADDR;
            ncpaddr_setip4(&gw, bundle->ncp.ipcp.peer_ip);
          } else if (strcasecmp(argv[1], "HISADDR") == 0)
            addrs |= ROUTE_GWHISADDR;

          route_Add(&r->routes, addrs, &dest, &gw);
        }
        free(nuke);
        break;

      case RAD_REPLY_MESSAGE:
        free(r->repstr);
        if ((r->repstr = rad_cvt_string(data, len)) == NULL) {
          log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad));
          auth_Failure(r->cx.auth);
          rad_close(r->cx.rad);
          return;
        }
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " Reply-Message \"%s\"\n", r->repstr);
        break;

#ifndef NOINET6
      case RAD_FRAMED_IPV6_PREFIX:
	free(r->ipv6prefix);
	if ((r->ipv6prefix = rad_cvt_ipv6prefix(data, len)) == NULL) {
	  log_Printf(LogERROR, "rad_cvt_ipv6prefix: %s\n",
		     "Malformed attribute in response");
	  auth_Failure(r->cx.auth);
	  rad_close(r->cx.rad);
	  return;
	}
	inet_ntop(AF_INET6, &r->ipv6prefix[2], ipv6addr, sizeof(ipv6addr));
	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " IPv6 %s/%d\n", ipv6addr, r->ipv6prefix[1]);
        break;

      case RAD_FRAMED_IPV6_ROUTE:
        /*
         * We expect a string of the format ``dest[/bits] gw [metrics]''
         * Any specified metrics are ignored.  MYADDR6 and HISADDR6 are
         * understood for ``dest'' and ``gw'' and ``::'' is the same
         * as ``HISADDR6''.
         */

        if ((nuke = rad_cvt_string(data, len)) == NULL) {
          log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad));
          auth_Failure(r->cx.auth);
          rad_close(r->cx.rad);
          return;
        }

	log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
		   " IPv6 Route: %s\n", nuke);
        bundle = r->cx.auth->physical->dl->bundle;
	ncpaddr_setip6(&gw, &in6addr_any);
	ncprange_set(&dest, &gw, 0);
        argc = command_Interpret(nuke, strlen(nuke), argv);
        if (argc < 0)
          log_Printf(LogWARN, "radius: %s: Syntax error\n",
                     argc == 1 ? argv[0] : "\"\"");
        else if (argc < 2)
          log_Printf(LogWARN, "radius: %s: Invalid route\n",
                     argc == 1 ? argv[0] : "\"\"");
        else if ((strcasecmp(argv[0], "default") != 0 &&
                  !ncprange_aton(&dest, &bundle->ncp, argv[0])) ||
                 !ncpaddr_aton(&gw, &bundle->ncp, argv[1]))
          log_Printf(LogWARN, "radius: %s %s: Invalid route\n",
                     argv[0], argv[1]);
        else {
          addrs = 0;

          if (!strncasecmp(argv[0], "HISADDR6", 8))
            addrs = ROUTE_DSTHISADDR6;
          else if (!strncasecmp(argv[0], "MYADDR6", 7))
            addrs = ROUTE_DSTMYADDR6;

          if (ncpaddr_getip6(&gw, &ip6) && IN6_IS_ADDR_UNSPECIFIED(&ip6)) {
            addrs |= ROUTE_GWHISADDR6;
            ncpaddr_copy(&gw, &bundle->ncp.ipv6cp.hisaddr);
          } else if (strcasecmp(argv[1], "HISADDR6") == 0)
            addrs |= ROUTE_GWHISADDR6;

          route_Add(&r->ipv6routes, addrs, &dest, &gw);
        }
        free(nuke);
        break;
#endif

      case RAD_VENDOR_SPECIFIC:
        if ((res = rad_get_vendor_attr(&vendor, &data, &len)) <= 0) {
          log_Printf(LogERROR, "rad_get_vendor_attr: %s (failing!)\n",
                     rad_strerror(r->cx.rad));
          auth_Failure(r->cx.auth);
          rad_close(r->cx.rad);
          return;
        }

	switch (vendor) {
          case RAD_VENDOR_MICROSOFT:
            switch (res) {
#ifndef NODES
              case RAD_MICROSOFT_MS_CHAP_ERROR:
                free(r->errstr);
                if (len == 0)
                  r->errstr = NULL;
                else {
                  if (len < 3 || ((const char *)data)[1] != '=') {
                    /*
                     * Only point at the String field if we don't think the
                     * peer has misformatted the response.
                     */
                    data = (const char *)data + 1;
                    len--;
                  } else
                    log_Printf(LogWARN, "Warning: The MS-CHAP-Error "
                               "attribute is mis-formatted.  Compensating\n");
                  if ((r->errstr = rad_cvt_string((const char *)data,
                                                  len)) == NULL) {
                    log_Printf(LogERROR, "rad_cvt_string: %s\n",
                               rad_strerror(r->cx.rad));
                    auth_Failure(r->cx.auth);
                    rad_close(r->cx.rad);
                    return;
                  }
		  log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
			     " MS-CHAP-Error \"%s\"\n", r->errstr);
                }
                break;

              case RAD_MICROSOFT_MS_CHAP2_SUCCESS:
                free(r->msrepstr);
                if (len == 0)
                  r->msrepstr = NULL;
                else {
                  if (len < 3 || ((const char *)data)[1] != '=') {
                    /*
                     * Only point at the String field if we don't think the
                     * peer has misformatted the response.
                     */
                    data = (const char *)data + 1;
                    len--;
                  } else
                    log_Printf(LogWARN, "Warning: The MS-CHAP2-Success "
                               "attribute is mis-formatted.  Compensating\n");
                  if ((r->msrepstr = rad_cvt_string((const char *)data,
                                                    len)) == NULL) {
                    log_Printf(LogERROR, "rad_cvt_string: %s\n",
                               rad_strerror(r->cx.rad));
                    auth_Failure(r->cx.auth);
                    rad_close(r->cx.rad);
                    return;
                  }
		  log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
			     " MS-CHAP2-Success \"%s\"\n", r->msrepstr);
                }
                break;

              case RAD_MICROSOFT_MS_MPPE_ENCRYPTION_POLICY:
                r->mppe.policy = rad_cvt_int(data);
		log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
			   " MS-MPPE-Encryption-Policy %s\n",
                           radius_policyname(r->mppe.policy));
                break;

              case RAD_MICROSOFT_MS_MPPE_ENCRYPTION_TYPES:
                r->mppe.types = rad_cvt_int(data);
		log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
			   " MS-MPPE-Encryption-Types %s\n",
                           radius_typesname(r->mppe.types));
                break;

              case RAD_MICROSOFT_MS_MPPE_RECV_KEY:
                free(r->mppe.recvkey);
		demangle(r, data, len, &r->mppe.recvkey, &r->mppe.recvkeylen);
		log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
			   " MS-MPPE-Recv-Key ********\n");
                break;

              case RAD_MICROSOFT_MS_MPPE_SEND_KEY:
		demangle(r, data, len, &r->mppe.sendkey, &r->mppe.sendkeylen);
		log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
			   " MS-MPPE-Send-Key ********\n");
                break;
#endif

              default:
                log_Printf(LogDEBUG, "Dropping MICROSOFT vendor specific "
                           "RADIUS attribute %d\n", res);
                break;
            }
            break;

          default:
            log_Printf(LogDEBUG, "Dropping vendor %lu RADIUS attribute %d\n",
                       (unsigned long)vendor, res);
            break;
        }
        break;

      default:
        log_Printf(LogDEBUG, "Dropping RADIUS attribute %d\n", res);
        break;
    }
  }

  if (res == -1) {
    log_Printf(LogERROR, "rad_get_attr: %s (failing!)\n",
               rad_strerror(r->cx.rad));
    auth_Failure(r->cx.auth);
  } else if (got == RAD_ACCESS_REJECT)
    auth_Failure(r->cx.auth);
  else {
    r->valid = 1;
    auth_Success(r->cx.auth);
  }
  rad_close(r->cx.rad);
}

/*
 * We've either timed out or select()ed on the read descriptor
 */
static void
radius_Continue(struct radius *r, int sel)
{
  struct timeval tv;
  int got;

  timer_Stop(&r->cx.timer);
  if ((got = rad_continue_send_request(r->cx.rad, sel, &r->cx.fd, &tv)) == 0) {
    log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
	       "Radius: Request re-sent\n");
    r->cx.timer.load = tv.tv_usec / TICKUNIT + tv.tv_sec * SECTICKS;
    timer_Start(&r->cx.timer);
    return;
  }

  radius_Process(r, got);
}

/*
 * Time to call rad_continue_send_request() - timed out.
 */
static void
radius_Timeout(void *v)
{
  radius_Continue((struct radius *)v, 0);
}

/*
 * Time to call rad_continue_send_request() - something to read.
 */
static void
radius_Read(struct fdescriptor *d, struct bundle *bundle __unused,
	    const fd_set *fdset __unused)
{
  radius_Continue(descriptor2radius(d), 1);
}

/*
 * Flush any pending transactions
 */
void
radius_Flush(struct radius *r)
{
  struct timeval tv;
  fd_set s;

  while (r->cx.fd != -1) {
    FD_ZERO(&s);
    FD_SET(r->cx.fd, &s);
    tv.tv_sec = 0;
    tv.tv_usec = TICKUNIT;
    select(r->cx.fd + 1, &s, NULL, NULL, &tv);
    radius_Continue(r, 1);
  }
}

/*
 * Behave as a struct fdescriptor (descriptor.h)
 */
static int
radius_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w __unused,
		 fd_set *e __unused, int *n)
{
  struct radius *rad = descriptor2radius(d);

  if (r && rad->cx.fd != -1) {
    FD_SET(rad->cx.fd, r);
    if (*n < rad->cx.fd + 1)
      *n = rad->cx.fd + 1;
    log_Printf(LogTIMER, "Radius: fdset(r) %d\n", rad->cx.fd);
    return 1;
  }

  return 0;
}

/*
 * Behave as a struct fdescriptor (descriptor.h)
 */
static int
radius_IsSet(struct fdescriptor *d, const fd_set *fdset)
{
  struct radius *r = descriptor2radius(d);

  return r && r->cx.fd != -1 && FD_ISSET(r->cx.fd, fdset);
}

/*
 * Behave as a struct fdescriptor (descriptor.h)
 */
static int
radius_Write(struct fdescriptor *d __unused, struct bundle *bundle __unused,
	     const fd_set *fdset __unused)
{
  /* We never want to write here ! */
  log_Printf(LogALERT, "radius_Write: Internal error: Bad call !\n");
  return 0;
}

/*
 * Initialise ourselves
 */
void
radius_Init(struct radius *r)
{
  r->desc.type = RADIUS_DESCRIPTOR;
  r->desc.UpdateSet = radius_UpdateSet;
  r->desc.IsSet = radius_IsSet;
  r->desc.Read = radius_Read;
  r->desc.Write = radius_Write;
  r->cx.fd = -1;
  r->cx.rad = NULL;
  memset(&r->cx.timer, '\0', sizeof r->cx.timer);
  r->cx.auth = NULL;
  r->valid = 0;
  r->vj = 0;
  r->ip.s_addr = INADDR_ANY;
  r->mask.s_addr = INADDR_NONE;
  r->routes = NULL;
  r->mtu = DEF_MTU;
  r->msrepstr = NULL;
  r->repstr = NULL;
#ifndef NOINET6
  r->ipv6prefix = NULL;
  r->ipv6routes = NULL;
#endif
  r->errstr = NULL;
  r->mppe.policy = 0;
  r->mppe.types = 0;
  r->mppe.recvkey = NULL;
  r->mppe.recvkeylen = 0;
  r->mppe.sendkey = NULL;
  r->mppe.sendkeylen = 0;
  *r->cfg.file = '\0';
  log_Printf(LogDEBUG, "Radius: radius_Init\n");
}

/*
 * Forget everything and go back to initialised state.
 */
void
radius_Destroy(struct radius *r)
{
  r->valid = 0;
  log_Printf(LogDEBUG, "Radius: radius_Destroy\n");
  timer_Stop(&r->cx.timer);
  route_DeleteAll(&r->routes);
#ifndef NOINET6
  route_DeleteAll(&r->ipv6routes);
#endif
  free(r->filterid);
  r->filterid = NULL;
  free(r->msrepstr);
  r->msrepstr = NULL;
  free(r->repstr);
  r->repstr = NULL;
#ifndef NOINET6
  free(r->ipv6prefix);
  r->ipv6prefix = NULL;
#endif
  free(r->errstr);
  r->errstr = NULL;
  free(r->mppe.recvkey);
  r->mppe.recvkey = NULL;
  r->mppe.recvkeylen = 0;
  free(r->mppe.sendkey);
  r->mppe.sendkey = NULL;
  r->mppe.sendkeylen = 0;
  if (r->cx.fd != -1) {
    r->cx.fd = -1;
    rad_close(r->cx.rad);
  }
}

static int
radius_put_physical_details(struct radius *rad, struct physical *p)
{
  int slot, type;

  type = RAD_VIRTUAL;
  if (p->handler)
    switch (p->handler->type) {
      case I4B_DEVICE:
        type = RAD_ISDN_SYNC;
        break;

      case TTY_DEVICE:
        type = RAD_ASYNC;
        break;

      case ETHER_DEVICE:
        type = RAD_ETHERNET;
        break;

      case TCP_DEVICE:
      case UDP_DEVICE:
      case EXEC_DEVICE:
      case ATM_DEVICE:
      case NG_DEVICE:
        type = RAD_VIRTUAL;
        break;
    }

  if (rad_put_int(rad->cx.rad, RAD_NAS_PORT_TYPE, type) != 0) {
    log_Printf(LogERROR, "rad_put: rad_put_int: %s\n", rad_strerror(rad->cx.rad));
    rad_close(rad->cx.rad);
    return 0;
  }

  switch (rad->port_id_type) {
    case RPI_PID:
      slot = (int)getpid();
      break;
    case RPI_IFNUM:
      slot = p->dl->bundle->iface->index;
      break;
    case RPI_TUNNUM:
      slot = p->dl->bundle->unit;
      break;
    case RPI_DEFAULT:
    default:
      slot = physical_Slot(p);
      break;
  }
  
  if (slot >= 0)
    if (rad_put_int(rad->cx.rad, RAD_NAS_PORT, slot) != 0) {
      log_Printf(LogERROR, "rad_put: rad_put_int: %s\n", rad_strerror(rad->cx.rad));
      rad_close(rad->cx.rad);
      return 0;
    }

  return 1;
}

/*
 * Start an authentication request to the RADIUS server.
 */
int
radius_Authenticate(struct radius *r, struct authinfo *authp, const char *name,
                    const char *key, int klen, const char *nchallenge,
                    int nclen)
{
  char hostname[MAXHOSTNAMELEN];
  struct timeval tv;
  const char *what = "questionable";	/* silence warnings! */
  char *mac_addr;
  int got;
  struct hostent *hp;
  struct in_addr hostaddr;
#ifndef NODES
  struct mschap_response msresp;
  struct mschap2_response msresp2;
  const struct MSCHAPv2_resp *keyv2;
#endif

  if (!*r->cfg.file)
    return 0;

  if (r->cx.fd != -1)
    /*
     * We assume that our name/key/challenge is the same as last time,
     * and just continue to wait for the RADIUS server(s).
     */
    return 1;

  radius_Destroy(r);

  if ((r->cx.rad = rad_auth_open()) == NULL) {
    log_Printf(LogERROR, "rad_auth_open: %s\n", strerror(errno));
    return 0;
  }

  if (rad_config(r->cx.rad, r->cfg.file) != 0) {
    log_Printf(LogERROR, "rad_config: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return 0;
  }

  if (rad_create_request(r->cx.rad, RAD_ACCESS_REQUEST) != 0) {
    log_Printf(LogERROR, "rad_create_request: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return 0;
  }

  if (rad_put_string(r->cx.rad, RAD_USER_NAME, name) != 0 ||
      rad_put_int(r->cx.rad, RAD_SERVICE_TYPE, RAD_FRAMED) != 0 ||
      rad_put_int(r->cx.rad, RAD_FRAMED_PROTOCOL, RAD_PPP) != 0) {
    log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return 0;
  }

  switch (authp->physical->link.lcp.want_auth) {
  case PROTO_PAP:
    /* We're talking PAP */
    if (rad_put_attr(r->cx.rad, RAD_USER_PASSWORD, key, klen) != 0) {
      log_Printf(LogERROR, "PAP: rad_put_string: %s\n",
                 rad_strerror(r->cx.rad));
      rad_close(r->cx.rad);
      return 0;
    }
    what = "PAP";
    break;

  case PROTO_CHAP:
    switch (authp->physical->link.lcp.want_authtype) {
    case 0x5:
      if (rad_put_attr(r->cx.rad, RAD_CHAP_PASSWORD, key, klen) != 0 ||
          rad_put_attr(r->cx.rad, RAD_CHAP_CHALLENGE, nchallenge, nclen) != 0) {
        log_Printf(LogERROR, "CHAP: rad_put_string: %s\n",
                   rad_strerror(r->cx.rad));
        rad_close(r->cx.rad);
        return 0;
      }
      what = "CHAP";
      break;

#ifndef NODES
    case 0x80:
      if (klen != 50) {
        log_Printf(LogERROR, "CHAP80: Unrecognised key length %d\n", klen);
        rad_close(r->cx.rad);
        return 0;
      }

      rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT,
                          RAD_MICROSOFT_MS_CHAP_CHALLENGE, nchallenge, nclen);
      msresp.ident = *key;
      msresp.flags = 0x01;
      memcpy(msresp.lm_response, key + 1, 24);
      memcpy(msresp.nt_response, key + 25, 24);
      rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT,
                          RAD_MICROSOFT_MS_CHAP_RESPONSE, &msresp,
                          sizeof msresp);
      what = "MSCHAP";
      break;

    case 0x81:
      if (klen != sizeof(*keyv2) + 1) {
        log_Printf(LogERROR, "CHAP81: Unrecognised key length %d\n", klen);
        rad_close(r->cx.rad);
        return 0;
      }

      keyv2 = (const struct MSCHAPv2_resp *)(key + 1);
      rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT,
                          RAD_MICROSOFT_MS_CHAP_CHALLENGE, nchallenge, nclen);
      msresp2.ident = *key;
      msresp2.flags = keyv2->Flags;
      memcpy(msresp2.response, keyv2->NTResponse, sizeof msresp2.response);
      memset(msresp2.reserved, '\0', sizeof msresp2.reserved);
      memcpy(msresp2.pchallenge, keyv2->PeerChallenge,
             sizeof msresp2.pchallenge);
      rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT,
                          RAD_MICROSOFT_MS_CHAP2_RESPONSE, &msresp2,
                          sizeof msresp2);
      what = "MSCHAPv2";
      break;
#endif
    default:
      log_Printf(LogERROR, "CHAP: Unrecognised type 0x%02x\n",
                 authp->physical->link.lcp.want_authtype);
      rad_close(r->cx.rad);
      return 0;
    }
  }

  if (gethostname(hostname, sizeof hostname) != 0)
    log_Printf(LogERROR, "rad_put: gethostname(): %s\n", strerror(errno));
  else {
    if (Enabled(authp->physical->dl->bundle, OPT_NAS_IP_ADDRESS) &&
        (hp = gethostbyname(hostname)) != NULL) {
      hostaddr.s_addr = *(u_long *)hp->h_addr;
      if (rad_put_addr(r->cx.rad, RAD_NAS_IP_ADDRESS, hostaddr) != 0) {
        log_Printf(LogERROR, "rad_put: rad_put_string: %s\n",
                   rad_strerror(r->cx.rad));
        rad_close(r->cx.rad);
        return 0;
      }
    }
    if (Enabled(authp->physical->dl->bundle, OPT_NAS_IDENTIFIER) &&
        rad_put_string(r->cx.rad, RAD_NAS_IDENTIFIER, hostname) != 0) {
      log_Printf(LogERROR, "rad_put: rad_put_string: %s\n",
                 rad_strerror(r->cx.rad));
      rad_close(r->cx.rad);
      return 0;
    }
  }

  if ((mac_addr = getenv("HISMACADDR")) != NULL &&
      rad_put_string(r->cx.rad, RAD_CALLING_STATION_ID, mac_addr) != 0) {
    log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return 0;
  }

  radius_put_physical_details(r, authp->physical);

  log_Printf(LogRADIUS, "Radius(auth): %s data sent for %s\n", what, name);

  r->cx.auth = authp;
  if ((got = rad_init_send_request(r->cx.rad, &r->cx.fd, &tv)))
    radius_Process(r, got);
  else {
    log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE,
	       "Radius: Request sent\n");
    log_Printf(LogDEBUG, "Using radius_Timeout [%p]\n", radius_Timeout);
    r->cx.timer.load = tv.tv_usec / TICKUNIT + tv.tv_sec * SECTICKS;
    r->cx.timer.func = radius_Timeout;
    r->cx.timer.name = "radius auth";
    r->cx.timer.arg = r;
    timer_Start(&r->cx.timer);
  }

  return 1;
}

/* Fetch IP, netmask from IPCP */
void
radius_Account_Set_Ip(struct radacct *ac, struct in_addr *peer_ip,
		      struct in_addr *netmask)
{
  ac->proto = PROTO_IPCP;
  memcpy(&ac->peer.ip.addr, peer_ip, sizeof(ac->peer.ip.addr));
  memcpy(&ac->peer.ip.mask, netmask, sizeof(ac->peer.ip.mask));
}

#ifndef NOINET6
/* Fetch interface-id from IPV6CP */
void
radius_Account_Set_Ipv6(struct radacct *ac, u_char *ifid)
{
  ac->proto = PROTO_IPV6CP;
  memcpy(&ac->peer.ipv6.ifid, ifid, sizeof(ac->peer.ipv6.ifid));
}
#endif

/*
 * Send an accounting request to the RADIUS server
 */
void
radius_Account(struct radius *r, struct radacct *ac, struct datalink *dl,
               int acct_type, struct pppThroughput *stats)
{
  struct timeval tv;
  int got;
  char hostname[MAXHOSTNAMELEN];
  char *mac_addr;
  struct hostent *hp;
  struct in_addr hostaddr;

  if (!*r->cfg.file)
    return;

  if (r->cx.fd != -1)
    /*
     * We assume that our name/key/challenge is the same as last time,
     * and just continue to wait for the RADIUS server(s).
     */
    return;

  timer_Stop(&r->cx.timer);

  if ((r->cx.rad = rad_acct_open()) == NULL) {
    log_Printf(LogERROR, "rad_auth_open: %s\n", strerror(errno));
    return;
  }

  if (rad_config(r->cx.rad, r->cfg.file) != 0) {
    log_Printf(LogERROR, "rad_config: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return;
  }

  if (rad_create_request(r->cx.rad, RAD_ACCOUNTING_REQUEST) != 0) {
    log_Printf(LogERROR, "rad_create_request: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return;
  }

  /* Grab some accounting data and initialize structure */
  if (acct_type == RAD_START) {
    ac->rad_parent = r;
    /* Fetch username from datalink */
    strncpy(ac->user_name, dl->peer.authname, sizeof ac->user_name);
    ac->user_name[AUTHLEN-1] = '\0';

    ac->authentic = 2;		/* Assume RADIUS verified auth data */

    /* Generate a session ID */
    snprintf(ac->session_id, sizeof ac->session_id, "%s%ld-%s%lu",
             dl->bundle->cfg.auth.name, (long)getpid(),
             dl->peer.authname, (unsigned long)stats->uptime);

    /* And grab our MP socket name */
    snprintf(ac->multi_session_id, sizeof ac->multi_session_id, "%s",
             dl->bundle->ncp.mp.active ?
             dl->bundle->ncp.mp.server.socket.sun_path : "");
  };

  if (rad_put_string(r->cx.rad, RAD_USER_NAME, ac->user_name) != 0 ||
      rad_put_int(r->cx.rad, RAD_SERVICE_TYPE, RAD_FRAMED) != 0 ||
      rad_put_int(r->cx.rad, RAD_FRAMED_PROTOCOL, RAD_PPP) != 0) {
    log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return;
  }
  switch (ac->proto) {
  case PROTO_IPCP:
    if (rad_put_addr(r->cx.rad, RAD_FRAMED_IP_ADDRESS,
		     ac->peer.ip.addr) != 0 ||
	rad_put_addr(r->cx.rad, RAD_FRAMED_IP_NETMASK,
		     ac->peer.ip.mask) != 0) {
      log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
      rad_close(r->cx.rad);
      return;
    }
    break;
#ifndef NOINET6
  case PROTO_IPV6CP:
    if (rad_put_attr(r->cx.rad, RAD_FRAMED_INTERFACE_ID, ac->peer.ipv6.ifid,
		     sizeof(ac->peer.ipv6.ifid)) != 0) {
      log_Printf(LogERROR, "rad_put_attr: %s\n", rad_strerror(r->cx.rad));
      rad_close(r->cx.rad);
      return;
    }
    if (r->ipv6prefix) {
      /*
       * Since PPP doesn't delegate an IPv6 prefix to a peer,
       * Framed-IPv6-Prefix may be not used, actually.
       */
      if (rad_put_attr(r->cx.rad, RAD_FRAMED_IPV6_PREFIX, r->ipv6prefix,
		       sizeof(struct in6_addr) + 2) != 0) {
	log_Printf(LogERROR, "rad_put_attr: %s\n", rad_strerror(r->cx.rad));
	rad_close(r->cx.rad);
	return;
      }
    }
    break;
#endif
  default:
    /* We don't log any protocol specific information */
    break;
  }

  if ((mac_addr = getenv("HISMACADDR")) != NULL &&
      rad_put_string(r->cx.rad, RAD_CALLING_STATION_ID, mac_addr) != 0) {
    log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return;
  }

  if (gethostname(hostname, sizeof hostname) != 0)
    log_Printf(LogERROR, "rad_put: gethostname(): %s\n", strerror(errno));
  else {
    if (Enabled(dl->bundle, OPT_NAS_IP_ADDRESS) &&
        (hp = gethostbyname(hostname)) != NULL) {
      hostaddr.s_addr = *(u_long *)hp->h_addr;
      if (rad_put_addr(r->cx.rad, RAD_NAS_IP_ADDRESS, hostaddr) != 0) {
        log_Printf(LogERROR, "rad_put: rad_put_string: %s\n",
                   rad_strerror(r->cx.rad));
        rad_close(r->cx.rad);
        return;
      }
    }
    if (Enabled(dl->bundle, OPT_NAS_IDENTIFIER) &&
        rad_put_string(r->cx.rad, RAD_NAS_IDENTIFIER, hostname) != 0) {
      log_Printf(LogERROR, "rad_put: rad_put_string: %s\n",
                 rad_strerror(r->cx.rad));
      rad_close(r->cx.rad);
      return;
    }
  }

  radius_put_physical_details(r, dl->physical);

  if (rad_put_int(r->cx.rad, RAD_ACCT_STATUS_TYPE, acct_type) != 0 ||
      rad_put_string(r->cx.rad, RAD_ACCT_SESSION_ID, ac->session_id) != 0 ||
      rad_put_string(r->cx.rad, RAD_ACCT_MULTI_SESSION_ID,
                     ac->multi_session_id) != 0 ||
      rad_put_int(r->cx.rad, RAD_ACCT_DELAY_TIME, 0) != 0) {
/* XXX ACCT_DELAY_TIME should be increased each time a packet is waiting */
    log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
    rad_close(r->cx.rad);
    return;
  }

  if (acct_type == RAD_STOP || acct_type == RAD_ALIVE)
    /* Show some statistics */
    if (rad_put_int(r->cx.rad, RAD_ACCT_INPUT_OCTETS, stats->OctetsIn % UINT32_MAX) != 0 ||
        rad_put_int(r->cx.rad, RAD_ACCT_INPUT_GIGAWORDS, stats->OctetsIn / UINT32_MAX) != 0 ||
        rad_put_int(r->cx.rad, RAD_ACCT_INPUT_PACKETS, stats->PacketsIn) != 0 ||
        rad_put_int(r->cx.rad, RAD_ACCT_OUTPUT_OCTETS, stats->OctetsOut % UINT32_MAX) != 0 ||
        rad_put_int(r->cx.rad, RAD_ACCT_OUTPUT_GIGAWORDS, stats->OctetsOut / UINT32_MAX) != 0 ||
        rad_put_int(r->cx.rad, RAD_ACCT_OUTPUT_PACKETS, stats->PacketsOut)
        != 0 ||
        rad_put_int(r->cx.rad, RAD_ACCT_SESSION_TIME, throughput_uptime(stats))
        != 0) {
      log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad));
      rad_close(r->cx.rad);
      return;
    }

  if (log_IsKept(LogPHASE) || log_IsKept(LogRADIUS)) {
    const char *what;
    int level;

    switch (acct_type) {
    case RAD_START:
      what = "START";
      level = log_IsKept(LogPHASE) ? LogPHASE : LogRADIUS;
      break;
    case RAD_STOP:
      what = "STOP";
      level = log_IsKept(LogPHASE) ? LogPHASE : LogRADIUS;
      break;
    case RAD_ALIVE:
      what = "ALIVE";
      level = LogRADIUS;
      break;
    default:
      what = "<unknown>";
      level = log_IsKept(LogPHASE) ? LogPHASE : LogRADIUS;
      break;
    }
    log_Printf(level, "Radius(acct): %s data sent\n", what);
  }
  
  r->cx.auth = NULL;			/* Not valid for accounting requests */
  if ((got = rad_init_send_request(r->cx.rad, &r->cx.fd, &tv)))
    radius_Process(r, got);
  else {
    log_Printf(LogDEBUG, "Using radius_Timeout [%p]\n", radius_Timeout);
    r->cx.timer.load = tv.tv_usec / TICKUNIT + tv.tv_sec * SECTICKS;
    r->cx.timer.func = radius_Timeout;
    r->cx.timer.name = "radius acct";
    r->cx.timer.arg = r;
    timer_Start(&r->cx.timer);
  }
}

/*
 * How do things look at the moment ?
 */
void
radius_Show(struct radius *r, struct prompt *p)
{
  prompt_Printf(p, " Radius config:     %s",
                *r->cfg.file ? r->cfg.file : "none");
  if (r->valid) {
    prompt_Printf(p, "\n                IP: %s\n", inet_ntoa(r->ip));
    prompt_Printf(p, "           Netmask: %s\n", inet_ntoa(r->mask));
    prompt_Printf(p, "               MTU: %lu\n", r->mtu);
    prompt_Printf(p, "                VJ: %sabled\n", r->vj ? "en" : "dis");
    prompt_Printf(p, "           Message: %s\n", r->repstr ? r->repstr : "");
    prompt_Printf(p, "   MPPE Enc Policy: %s\n",
                  radius_policyname(r->mppe.policy));
    prompt_Printf(p, "    MPPE Enc Types: %s\n",
                  radius_typesname(r->mppe.types));
    prompt_Printf(p, "     MPPE Recv Key: %seceived\n",
                  r->mppe.recvkey ? "R" : "Not r");
    prompt_Printf(p, "     MPPE Send Key: %seceived\n",
                  r->mppe.sendkey ? "R" : "Not r");
    prompt_Printf(p, " MS-CHAP2-Response: %s\n",
                  r->msrepstr ? r->msrepstr : "");
    prompt_Printf(p, "     Error Message: %s\n", r->errstr ? r->errstr : "");
    if (r->routes)
      route_ShowSticky(p, r->routes, "            Routes", 16);
#ifndef NOINET6
    if (r->ipv6routes)
      route_ShowSticky(p, r->ipv6routes, "            IPv6 Routes", 16);
#endif
  } else
    prompt_Printf(p, " (not authenticated)\n");
}

static void
radius_alive(void *v)
{
  struct bundle *bundle = (struct bundle *)v;

  timer_Stop(&bundle->radius.alive.timer);
  bundle->radius.alive.timer.load = bundle->radius.alive.interval * SECTICKS;
  if (bundle->radius.alive.timer.load) {
    radius_Account(&bundle->radius, &bundle->radacct,
                   bundle->links, RAD_ALIVE, &bundle->ncp.ipcp.throughput);
    timer_Start(&bundle->radius.alive.timer);
  }
}

void
radius_StartTimer(struct bundle *bundle)
{
  if (bundle->radius.cfg.file && bundle->radius.alive.interval) {
    bundle->radius.alive.timer.func = radius_alive;
    bundle->radius.alive.timer.name = "radius alive";
    bundle->radius.alive.timer.load = bundle->radius.alive.interval * SECTICKS;
    bundle->radius.alive.timer.arg = bundle;
    radius_alive(bundle);
  }
}

void
radius_StopTimer(struct radius *r)
{
  timer_Stop(&r->alive.timer);
}
OpenPOWER on IntegriCloud