command.c revision 26551 
1/*
2 *		PPP User command processing module
3 *
4 *	    Written by Toshiharu OHNO (tony-o@iij.ad.jp)
5 *
6 *   Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
7 *
8 * Redistribution and use in source and binary forms are permitted
9 * provided that the above copyright notice and this paragraph are
10 * duplicated in all such forms and that any documentation,
11 * advertising materials, and other materials related to such
12 * distribution and use acknowledge that the software was developed
13 * by the Internet Initiative Japan, Inc.  The name of the
14 * IIJ may not be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
18 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 *
20 * $Id: command.c,v 1.54 1997/06/09 03:27:16 brian Exp $
21 *
22 */
23#include <sys/types.h>
24#include <ctype.h>
25#include <termios.h>
26#include <sys/wait.h>
27#include <time.h>
28#include <netdb.h>
29#include <sys/socket.h>
30#include <netinet/in.h>
31#include <arpa/inet.h>
32#include <net/route.h>
33#include <paths.h>
34#include <alias.h>
35#include <fcntl.h>
36#include <errno.h>
37#include "fsm.h"
38#include "phase.h"
39#include "lcp.h"
40#include "ipcp.h"
41#include "modem.h"
42#include "filter.h"
43#include "command.h"
44#include "alias_cmd.h"
45#include "hdlc.h"
46#include "loadalias.h"
47#include "vars.h"
48#include "systems.h"
49#include "chat.h"
50#include "os.h"
51#include "timeout.h"
52
53extern void Cleanup(), TtyTermMode(), PacketMode();
54extern int  EnableCommand(), DisableCommand(), DisplayCommand();
55extern int  AcceptCommand(), DenyCommand();
56static int  AliasCommand();
57extern int  LocalAuthCommand();
58extern int  LoadCommand(), SaveCommand();
59extern int  ChangeParity(char *);
60extern int  SelectSystem();
61extern int  ShowRoute();
62extern void TtyOldMode(), TtyCommandMode();
63extern struct pppvars pppVars;
64extern struct cmdtab const SetCommands[];
65
66extern char *IfDevName;
67
68struct in_addr ifnetmask;
69int randinit;
70
71static int ShowCommand(), TerminalCommand(), QuitCommand();
72static int CloseCommand(), DialCommand(), DownCommand();
73static int SetCommand(), AddCommand(), DeleteCommand();
74static int ShellCommand();
75
76static int
77HelpCommand(list, argc, argv, plist)
78struct cmdtab *list;
79int argc;
80char **argv;
81struct cmdtab *plist;
82{
83  struct cmdtab *cmd;
84  int n;
85
86  if (!VarTerm)
87    return 0;
88
89  if (argc > 0) {
90    for (cmd = plist; cmd->name; cmd++)
91      if (strcasecmp(cmd->name, *argv) == 0 && (cmd->lauth & VarLocalAuth)) {
92	if (plist == SetCommands)
93	  fprintf(VarTerm, "set ");
94        fprintf(VarTerm, "%s\n", cmd->syntax);
95        return 0;
96      }
97
98    return -1;
99  }
100
101  n = 0;
102  for (cmd = plist; cmd->func; cmd++)
103    if (cmd->name && (cmd->lauth & VarLocalAuth)) {
104      fprintf(VarTerm, "  %-8s: %-20s\n", cmd->name, cmd->helpmes);
105      n++;
106    }
107
108  if (n & 1)
109    fprintf(VarTerm, "\n");
110
111  return 0;
112}
113
114int
115IsInteractive()
116{
117  char *mes = NULL;
118
119  if (mode & MODE_DDIAL)
120    mes = "Working in dedicated dial mode.";
121  else if (mode & MODE_BACKGROUND)
122    mes = "Working in background mode.";
123  else if (mode & MODE_AUTO)
124    mes = "Working in auto mode.";
125  else if (mode & MODE_DIRECT)
126    mes = "Working in direct mode.";
127  else if (mode & MODE_DEDICATED)
128    mes = "Working in dedicated mode.";
129  if (mes) {
130    if (VarTerm)
131      fprintf(VarTerm, "%s\n", mes);
132    return 0;
133  }
134  return 1;
135}
136
137static int
138DialCommand(cmdlist, argc, argv)
139struct cmdtab *cmdlist;
140int argc;
141char **argv;
142{
143  int tries;
144
145  if (LcpFsm.state > ST_CLOSED) {
146    if (VarTerm)
147      fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
148    return 0;
149  }
150
151  if (!IsInteractive())
152    return(1);
153
154  if (argc > 0) {
155    if (SelectSystem(*argv, CONFFILE) < 0) {
156      if (VarTerm)
157        fprintf(VarTerm, "%s: not found.\n", *argv);
158      return -1;
159    }
160  }
161
162  tries = 0;
163  do {
164    if (VarTerm)
165      fprintf(VarTerm, "Dial attempt %u of %d\n", ++tries, VarDialTries);
166    modem = OpenModem(mode);
167    if (modem < 0) {
168      if (VarTerm)
169        fprintf(VarTerm, "Failed to open modem.\n");
170      break;
171    }
172    if (DialModem() == EX_DONE) {
173      sleep(1);
174      ModemTimeout();
175      PacketMode();
176      break;
177    }
178  } while (VarDialTries == 0 || tries < VarDialTries);
179
180  return 0;
181}
182
183static int
184ShellCommand(cmdlist, argc, argv)
185struct cmdtab *cmdlist;
186int argc;
187char **argv;
188{
189  const char *shell;
190  pid_t shpid;
191  FILE *oVarTerm;
192
193#ifdef SHELL_ONLY_INTERACTIVELY
194  if (mode != MODE_INTER) {
195    LogPrintf(LogWARN, "Can only start a shell in interactive mode\n");
196    return 1;
197  }
198#else
199  if ((mode & (MODE_AUTO|MODE_INTER)) == (MODE_AUTO|MODE_INTER)) {
200    LogPrintf(LogWARN,  "Shell is not allowed interactively in auto mode\n");
201    return 1;
202  }
203#endif
204
205  if(argc == 0 && !(mode & MODE_INTER)) {
206    LogPrintf(LogWARN, "Can only start an interactive shell in"
207	      " interactive mode\n");
208    return 1;
209  }
210
211  if((shell = getenv("SHELL")) == 0)
212    shell = _PATH_BSHELL;
213
214  if((shpid = fork()) == 0) {
215     int dtablesize, i, fd;
216
217     if (VarTerm)
218       fd = fileno(VarTerm);
219     else if ((fd = open("/dev/null", O_RDWR)) == -1) {
220       LogPrintf(LogALERT, "Failed to open /dev/null: %s\n", strerror(errno));
221       exit(1);
222     }
223
224     for (i = 0; i < 3; i++)
225       dup2(fd, i);
226
227     if (fd > 2)
228       if (VarTerm) {
229	 oVarTerm = VarTerm;
230	 VarTerm = 0;
231         if (oVarTerm && oVarTerm != stdout)
232           fclose(oVarTerm);
233       } else
234         close(fd);
235
236     for (dtablesize = getdtablesize(), i = 3; i < dtablesize; i++)
237	(void)close(i);
238
239     /*
240      * We are running setuid, we should change to
241      * real user for avoiding security problems.
242      */
243     if (setgid(getgid()) < 0) {
244        LogPrintf(LogERROR, "setgid: %s\n", strerror(errno));
245	exit(1);
246     }
247     if (setuid(getuid()) < 0) {
248        LogPrintf(LogERROR, "setuid: %s\n", strerror(errno));
249	exit(1);
250     }
251     TtyOldMode();
252     if(argc > 0) {
253       /* substitute pseudo args */
254       for (i=1; i<argc; i++) {
255         if (strcasecmp(argv[i], "HISADDR") == 0) {
256           argv[i] = strdup(inet_ntoa(IpcpInfo.his_ipaddr));
257         }
258         if (strcasecmp(argv[i], "INTERFACE") == 0) {
259           argv[i] = strdup(IfDevName);
260         }
261         if (strcasecmp(argv[i], "MYADDR") == 0) {
262           argv[i] = strdup(inet_ntoa(IpcpInfo.want_ipaddr));
263         }
264       }
265       (void)execvp(argv[0], argv);
266     }
267     else
268       (void)execl(shell, shell, NULL);
269
270     LogPrintf(LogWARN, "exec() of %s failed\n", argc > 0 ? argv[0] : shell);
271     exit(255);
272  }
273
274  if( shpid == (pid_t)-1 ) {
275    LogPrintf(LogERROR, "Fork failed: %s\n", strerror(errno));
276  } else {
277    int status;
278    (void)waitpid(shpid, &status, 0);
279  }
280
281  TtyCommandMode(1);
282
283  return(0);
284}
285
286struct cmdtab const Commands[] = {
287  { "accept",  NULL,    AcceptCommand,	LOCAL_AUTH,
288  	"accept option request",	"accept option .."},
289  { "add",     NULL,	AddCommand,	LOCAL_AUTH,
290	"add route",			"add dest mask gateway"},
291  { "close",   NULL,    CloseCommand,	LOCAL_AUTH,
292	"Close connection",		"close"},
293  { "delete",  NULL,    DeleteCommand,	LOCAL_AUTH,
294	"delete route",                 "delete ALL | dest gateway [mask]"},
295  { "deny",    NULL,    DenyCommand,	LOCAL_AUTH,
296  	"Deny option request",		"deny option .."},
297  { "dial",    "call",  DialCommand,	LOCAL_AUTH,
298  	"Dial and login",		"dial|call [remote]"},
299  { "disable", NULL,    DisableCommand,	LOCAL_AUTH,
300  	"Disable option",		"disable option .."},
301  { "display", NULL,    DisplayCommand,	LOCAL_AUTH,
302  	"Display option configs",	"display"},
303  { "enable",  NULL,    EnableCommand,	LOCAL_AUTH,
304  	"Enable option",		"enable option .."},
305  { "passwd",  NULL,	LocalAuthCommand,LOCAL_NO_AUTH,
306  	"Password for manipulation", "passwd option .."},
307  { "load",    NULL,    LoadCommand,	LOCAL_AUTH,
308  	"Load settings",		"load [remote]"},
309  { "save",    NULL,    SaveCommand,	LOCAL_AUTH,
310  	"Save settings", "save"},
311  { "set",     "setup", SetCommand,	LOCAL_AUTH,
312  	"Set parameters",  "set[up] var value"},
313  { "shell",   "!",     ShellCommand,   LOCAL_AUTH,
314	"Run a subshell",  "shell|! [sh command]"},
315  { "show",    NULL,    ShowCommand,	LOCAL_AUTH,
316  	"Show status and statictics", "show var"},
317  { "term",    NULL,    TerminalCommand,LOCAL_AUTH,
318  	"Enter to terminal mode", "term"},
319  { "alias",   NULL,    AliasCommand,   LOCAL_AUTH,
320        "alias control",        "alias option [yes|no]"},
321  { "quit",    "bye",   QuitCommand,	LOCAL_AUTH | LOCAL_NO_AUTH,
322	"Quit PPP program", "quit|bye [all]"},
323  { "help",    "?",     HelpCommand,	LOCAL_AUTH | LOCAL_NO_AUTH,
324	"Display this message", "help|? [command]", (void *)Commands },
325  { NULL,      "down",  DownCommand,	LOCAL_AUTH,
326  	"Generate down event",		"down"},
327  { NULL,      NULL,    NULL },
328};
329
330extern int ReportCcpStatus();
331extern int ReportLcpStatus();
332extern int ReportIpcpStatus();
333extern int ReportProtStatus();
334extern int ReportCompress();
335extern int ShowModemStatus();
336extern int ReportHdlcStatus();
337extern int ShowMemMap();
338
339static int ShowLogLevel()
340{
341  int i;
342
343  if (!VarTerm)
344    return 0;
345  fprintf(VarTerm, "Log:");
346  for (i = LogMIN; i < LogMAXCONF; i++) {
347    if (LogIsKept(i))
348      fprintf(VarTerm, " %s", LogName(i));
349  }
350  fprintf(VarTerm, "\n");
351
352  return 0;
353}
354
355static int ShowEscape()
356{
357  int code, bit;
358
359  if (!VarTerm)
360    return 0;
361  if (EscMap[32]) {
362    for (code = 0; code < 32; code++)
363      if (EscMap[code])
364        for (bit = 0; bit < 8; bit++)
365          if (EscMap[code] & (1<<bit))
366            fprintf(VarTerm, " 0x%02x", (code << 3) + bit);
367    fprintf(VarTerm, "\n");
368  }
369  return 1;
370}
371
372static int ShowTimeout()
373{
374  if (!VarTerm)
375    return 0;
376  fprintf(VarTerm, " Idle Timer: %d secs   LQR Timer: %d secs"
377          "   Retry Timer: %d secs\n", VarIdleTimeout, VarLqrTimeout,
378          VarRetryTimeout);
379  return 1;
380}
381
382static int ShowAuthKey()
383{
384  if (!VarTerm)
385    return 0;
386  fprintf(VarTerm, "AuthName = %s\n", VarAuthName);
387  fprintf(VarTerm, "AuthKey  = %s\n", VarAuthKey);
388  return 1;
389}
390
391static int ShowVersion()
392{
393  extern char VarVersion[];
394  extern char VarLocalVersion[];
395
396  if (!VarTerm)
397    return 0;
398  fprintf(VarTerm, "%s - %s \n", VarVersion, VarLocalVersion);
399  return 1;
400}
401
402static int ShowInitialMRU()
403{
404  if (!VarTerm)
405    return 0;
406  fprintf(VarTerm, " Initial MRU: %ld\n", VarMRU);
407  return 1;
408}
409
410static int ShowPreferredMTU()
411{
412  if (!VarTerm)
413    return 0;
414  if (VarPrefMTU)
415    fprintf(VarTerm, " Preferred MTU: %ld\n", VarPrefMTU);
416  else
417    fprintf(VarTerm, " Preferred MTU: unspecified\n");
418  return 1;
419}
420
421static int ShowReconnect()
422{
423  if (!VarTerm)
424    return 0;
425  fprintf(VarTerm, " Reconnect Timer:  %d,  %d tries\n",
426         VarReconnectTimer, VarReconnectTries);
427  return 1;
428}
429
430static int ShowRedial()
431{
432  if (!VarTerm)
433    return 0;
434  fprintf(VarTerm, " Redial Timer: ");
435
436  if (VarRedialTimeout >= 0) {
437    fprintf(VarTerm, " %d seconds, ", VarRedialTimeout);
438  }
439  else {
440    fprintf(VarTerm, " Random 0 - %d seconds, ", REDIAL_PERIOD);
441  }
442
443  fprintf(VarTerm, " Redial Next Timer: ");
444
445  if (VarRedialNextTimeout >= 0) {
446    fprintf(VarTerm, " %d seconds, ", VarRedialNextTimeout);
447  }
448  else {
449    fprintf(VarTerm, " Random 0 - %d seconds, ", REDIAL_PERIOD);
450  }
451
452  if (VarDialTries)
453      fprintf(VarTerm, "%d dial tries", VarDialTries);
454
455  fprintf(VarTerm, "\n");
456
457  return 1;
458}
459
460#ifndef NOMSEXT
461static int ShowMSExt()
462{
463  if (!VarTerm)
464    return 0;
465  fprintf(VarTerm, " MS PPP extention values \n" );
466  fprintf(VarTerm, "   Primary NS     : %s\n", inet_ntoa( ns_entries[0] ));
467  fprintf(VarTerm, "   Secondary NS   : %s\n", inet_ntoa( ns_entries[1] ));
468  fprintf(VarTerm, "   Primary NBNS   : %s\n", inet_ntoa( nbns_entries[0] ));
469  fprintf(VarTerm, "   Secondary NBNS : %s\n", inet_ntoa( nbns_entries[1] ));
470  return 1;
471}
472#endif
473
474extern int ShowIfilter(), ShowOfilter(), ShowDfilter(), ShowAfilter();
475
476struct cmdtab const ShowCommands[] = {
477  { "afilter",  NULL,     ShowAfilter,		LOCAL_AUTH,
478	"Show keep Alive filters", "show afilter option .."},
479  { "auth",     NULL,     ShowAuthKey,		LOCAL_AUTH,
480	"Show auth name/key", "show auth"},
481  { "ccp",      NULL,     ReportCcpStatus,	LOCAL_AUTH,
482	"Show CCP status", "show cpp"},
483  { "compress", NULL,     ReportCompress,	LOCAL_AUTH,
484	"Show compression statictics", "show compress"},
485  { "dfilter",  NULL,     ShowDfilter,		LOCAL_AUTH,
486	"Show Demand filters", "show dfilteroption .."},
487  { "escape",   NULL,     ShowEscape,		LOCAL_AUTH,
488	"Show escape characters", "show escape"},
489  { "hdlc",	NULL,	  ReportHdlcStatus,	LOCAL_AUTH,
490	"Show HDLC error summary", "show hdlc"},
491  { "ifilter",  NULL,     ShowIfilter,		LOCAL_AUTH,
492	"Show Input filters", "show ifilter option .."},
493  { "ipcp",     NULL,     ReportIpcpStatus,	LOCAL_AUTH,
494	"Show IPCP status", "show ipcp"},
495  { "lcp",      NULL,     ReportLcpStatus,	LOCAL_AUTH,
496	"Show LCP status", "show lcp"},
497  { "log",	NULL,	  ShowLogLevel,	LOCAL_AUTH,
498	"Show current log level", "show log"},
499  { "mem",      NULL,     ShowMemMap,		LOCAL_AUTH,
500	"Show memory map", "show mem"},
501  { "modem",    NULL,     ShowModemStatus,	LOCAL_AUTH,
502	"Show modem setups", "show modem"},
503  { "mru",      NULL,     ShowInitialMRU,	LOCAL_AUTH,
504	"Show Initial MRU", "show mru"},
505  { "mtu",      NULL,     ShowPreferredMTU,	LOCAL_AUTH,
506	"Show Preferred MTU", "show mtu"},
507  { "ofilter",  NULL,     ShowOfilter,		LOCAL_AUTH,
508	"Show Output filters", "show ofilter option .."},
509  { "proto",    NULL,     ReportProtStatus,	LOCAL_AUTH,
510	"Show protocol summary", "show proto"},
511  { "reconnect",NULL,	  ShowReconnect,	LOCAL_AUTH,
512	"Show Reconnect timer,tries", "show reconnect"},
513  { "redial",   NULL,	  ShowRedial,		LOCAL_AUTH,
514	"Show Redial timeout value", "show redial"},
515  { "route",    NULL,     ShowRoute,		LOCAL_AUTH,
516	"Show routing table", "show route"},
517  { "timeout",  NULL,	  ShowTimeout,		LOCAL_AUTH,
518	"Show Idle timeout value", "show timeout"},
519#ifndef NOMSEXT
520  { "msext", 	NULL,	  ShowMSExt,		LOCAL_AUTH,
521	"Show MS PPP extentions", "show msext"},
522#endif
523  { "version",  NULL,	  ShowVersion,		LOCAL_NO_AUTH | LOCAL_AUTH,
524	"Show version string", "show version"},
525  { "help",     "?",      HelpCommand,		LOCAL_NO_AUTH | LOCAL_AUTH,
526	"Display this message", "show help|?", (void *)ShowCommands},
527  { NULL,       NULL,     NULL },
528};
529
530struct cmdtab *
531FindCommand(cmds, str, pmatch)
532struct cmdtab *cmds;
533char *str;
534int *pmatch;
535{
536  int nmatch;
537  int len;
538  struct cmdtab *found;
539
540  found = NULL;
541  len = strlen(str);
542  nmatch = 0;
543  while (cmds->func) {
544    if (cmds->name && strncasecmp(str, cmds->name, len) == 0) {
545      if (cmds->name[len] == '\0') {
546        *pmatch = 1;
547        return cmds;
548      }
549      nmatch++;
550      found = cmds;
551    } else if(cmds->alias && strncasecmp(str, cmds->alias, len) == 0) {
552      if (cmds->alias[len] == '\0') {
553        *pmatch = 1;
554        return cmds;
555      }
556      nmatch++;
557      found = cmds;
558    }
559    cmds++;
560  }
561  *pmatch = nmatch;
562  return found;
563}
564
565int
566FindExec(cmdlist, argc, argv)
567struct cmdtab *cmdlist;
568int argc;
569char **argv;
570{
571  struct cmdtab *cmd;
572  int val = 1;
573  int nmatch;
574
575  cmd = FindCommand(cmdlist, *argv, &nmatch);
576  if (nmatch > 1)
577    LogPrintf(LogWARN, "%s: Ambiguous command\n", *argv);
578  else if (cmd && ( cmd->lauth & VarLocalAuth ) )
579    val = (cmd->func)(cmd, --argc, ++argv, cmd->args);
580  else
581    LogPrintf(LogWARN, "%s: Invalid command\n", *argv);
582
583  if (val == -1)
584    LogPrintf(LogWARN, "Usage: %s\n", cmd->syntax);
585  else if(val)
586    LogPrintf(LogCOMMAND, "%s: Failed %d\n", *argv, val);
587
588  return val;
589}
590
591int aft_cmd = 1;
592extern int TermMode;
593
594void
595Prompt()
596{
597  char *pconnect, *pauth;
598
599  if (!(mode & MODE_INTER) || !VarTerm || TermMode)
600    return;
601
602  if (!aft_cmd)
603    fprintf(VarTerm, "\n");
604  else
605    aft_cmd = 0;
606
607  if ( VarLocalAuth == LOCAL_AUTH )
608    pauth = " ON ";
609  else
610    pauth = " on ";
611  if (IpcpFsm.state == ST_OPENED && phase == PHASE_NETWORK)
612    pconnect = "PPP";
613  else
614    pconnect = "ppp";
615  fprintf(VarTerm, "%s%s%s> ", pconnect, pauth, VarShortHost);
616  fflush(VarTerm);
617}
618
619void
620DecodeCommand(buff, nb, prompt)
621char *buff;
622int nb;
623int prompt;
624{
625  char *vector[20];
626  char **argv;
627  int argc;
628  char *cp;
629
630  if (nb > 0) {
631    cp = buff + strcspn(buff, "\r\n");
632    if (cp)
633      *cp = '\0';
634    argc = MakeArgs(buff, vector, VECSIZE(vector));
635    argv = vector;
636
637    if (argc > 0)
638      FindExec(Commands, argc, argv);
639  }
640  if (prompt)
641    Prompt();
642}
643
644static int
645ShowCommand(list, argc, argv)
646struct cmdtab *list;
647int argc;
648char **argv;
649{
650  if (argc > 0)
651    FindExec(ShowCommands, argc, argv);
652  else if (VarTerm)
653    fprintf(VarTerm, "Use ``show ?'' to get a list.\n");
654  else
655    LogPrintf(LogWARN, "show command must have arguments\n");
656
657  return 0;
658}
659
660static int
661TerminalCommand()
662{
663  if (LcpFsm.state > ST_CLOSED) {
664    if (VarTerm)
665      fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
666    return 1;
667  }
668  if (!IsInteractive())
669    return(1);
670  modem = OpenModem(mode);
671  if (modem < 0) {
672    if (VarTerm)
673      fprintf(VarTerm, "Failed to open modem.\n");
674    return(1);
675  }
676  if (VarTerm) {
677    fprintf(VarTerm, "Enter to terminal mode.\n");
678    fprintf(VarTerm, "Type `~?' for help.\n");
679  }
680  TtyTermMode();
681  return(0);
682}
683
684static int
685QuitCommand(list, argc, argv)
686struct cmdtab *list;
687int argc;
688char **argv;
689{
690  FILE *oVarTerm;
691
692  if (mode & (MODE_DIRECT|MODE_DEDICATED|MODE_AUTO)) {
693    if (argc > 0 && (VarLocalAuth & LOCAL_AUTH)) {
694      Cleanup(EX_NORMAL);
695      mode &= ~MODE_INTER;
696      oVarTerm = VarTerm;
697      VarTerm = 0;
698      if (oVarTerm && oVarTerm != stdout)
699        fclose(oVarTerm);
700    } else {
701      LogPrintf(LogPHASE, "Client connection closed.\n");
702      VarLocalAuth = LOCAL_NO_AUTH;
703      mode &= ~MODE_INTER;
704      oVarTerm = VarTerm;
705      VarTerm = 0;
706      if (oVarTerm && oVarTerm != stdout)
707        fclose(oVarTerm);
708      close(netfd);
709      netfd = -1;
710    }
711  } else
712    Cleanup(EX_NORMAL);
713
714  return 0;
715}
716
717static int
718CloseCommand()
719{
720  reconnect(RECON_FALSE);
721  LcpClose();
722  if (mode & MODE_BACKGROUND)
723      Cleanup(EX_NORMAL);
724  return 0;
725}
726
727static int
728DownCommand()
729{
730  LcpDown();
731  return 0;
732}
733
734static int
735SetModemSpeed(list, argc, argv)
736struct cmdtab *list;
737int argc;
738char **argv;
739{
740  int speed;
741
742  if (argc > 0) {
743    if (strcmp(*argv, "sync") == 0) {
744      VarSpeed = 0;
745      return 0;
746    }
747    speed = atoi(*argv);
748    if (IntToSpeed(speed) != B0) {
749      VarSpeed = speed;
750      return 0;
751    }
752    LogPrintf(LogWARN, "%s: Invalid speed\n", *argv);
753  }
754  return -1;
755}
756
757static int
758SetReconnect(list, argc, argv)
759struct cmdtab *list;
760int argc;
761char **argv;
762{
763  if (argc == 2) {
764    VarReconnectTimer = atoi(argv[0]);
765    VarReconnectTries = atoi(argv[1]);
766    return 0;
767  }
768
769  return -1;
770}
771
772static int
773SetRedialTimeout(list, argc, argv)
774struct cmdtab *list;
775int argc;
776char **argv;
777{
778  int timeout;
779  int tries;
780  char *dot;
781
782  if (argc == 1 || argc == 2 ) {
783    if (strncasecmp(argv[0], "random", 6) == 0 &&
784	(argv[0][6] == '\0' || argv[0][6] == '.')) {
785      VarRedialTimeout = -1;
786      if (!randinit) {
787	randinit = 1;
788	if (srandomdev() < 0)
789	  srandom((unsigned long)(time(NULL) ^ getpid()));
790      }
791    } else {
792      timeout = atoi(argv[0]);
793
794      if (timeout >= 0)
795	VarRedialTimeout = timeout;
796      else {
797	LogPrintf(LogWARN, "Invalid redial timeout\n");
798        return -1;
799      }
800    }
801
802    dot = index(argv[0],'.');
803    if (dot) {
804      if (strcasecmp(++dot, "random") == 0) {
805        VarRedialNextTimeout = -1;
806        if (!randinit) {
807          randinit = 1;
808          if (srandomdev() < 0)
809            srandom((unsigned long)(time(NULL) ^ getpid()));
810        }
811      }
812      else {
813        timeout = atoi(dot);
814        if (timeout >= 0)
815          VarRedialNextTimeout = timeout;
816        else {
817          LogPrintf(LogWARN, "Invalid next redial timeout\n");
818	  return -1;
819        }
820      }
821    }
822    else
823      VarRedialNextTimeout = NEXT_REDIAL_PERIOD;   /* Default next timeout */
824
825    if (argc == 2) {
826      tries = atoi(argv[1]);
827
828      if (tries >= 0) {
829	VarDialTries = tries;
830      } else {
831	LogPrintf(LogWARN, "Invalid retry value\n");
832	return 1;
833      }
834    }
835    return 0;
836  }
837
838  return -1;
839}
840
841static int
842SetModemParity(list, argc, argv)
843struct cmdtab *list;
844int argc;
845char **argv;
846{
847  int parity;
848
849  if (argc > 0) {
850    parity = ChangeParity(*argv);
851    if (parity < 0)
852      LogPrintf(LogWARN, "Invalid parity.\n");
853    else {
854      VarParity = parity;
855      return 0;
856    }
857  }
858
859  return -1;
860}
861
862static int
863SetLogLevel(list, argc, argv)
864struct cmdtab *list;
865int argc;
866char **argv;
867{
868  int i;
869  int res;
870  char *arg;
871
872  res = 0;
873  if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-'))
874    LogDiscardAll();
875  while (argc--) {
876    arg = **argv == '+' || **argv == '-' ? *argv + 1 : *argv;
877    for (i = LogMIN; i <= LogMAX; i++)
878      if (strcasecmp(arg, LogName(i)) == 0) {
879        if (**argv == '-')
880          LogDiscard(i);
881        else
882	  LogKeep(i);
883	break;
884      }
885    if (i > LogMAX) {
886      LogPrintf(LogWARN, "%s: Invalid log value\n", arg);
887      res = -1;
888    }
889    argv++;
890  }
891  return res;
892}
893
894static int
895SetEscape(list, argc, argv)
896struct cmdtab *list;
897int argc;
898char **argv;
899{
900  int code;
901
902  for (code = 0; code < 33; code++)
903    EscMap[code] = 0;
904  while (argc-- > 0) {
905    sscanf(*argv++, "%x", &code);
906    code &= 0xff;
907    EscMap[code >> 3] |= (1 << (code&7));
908    EscMap[32] = 1;
909  }
910  return 0;
911}
912
913static int
914SetInitialMRU(list, argc, argv)
915struct cmdtab *list;
916int argc;
917char **argv;
918{
919  long mru;
920  char *err;
921
922  if (argc > 0) {
923    mru = atol(*argv);
924    if (mru < MIN_MRU)
925      err = "Given MRU value (%ld) is too small.\n";
926    else if (mru > MAX_MRU)
927      err = "Given MRU value (%ld) is too big.\n";
928    else {
929      VarMRU = mru;
930      return 0;
931    }
932    LogPrintf(LogWARN, err, mru);
933  }
934
935  return -1;
936}
937
938static int
939SetPreferredMTU(list, argc, argv)
940struct cmdtab *list;
941int argc;
942char **argv;
943{
944  long mtu;
945  char *err;
946
947  if (argc > 0) {
948    mtu = atol(*argv);
949    if (mtu == 0) {
950      VarPrefMTU = 0;
951      return 0;
952    } else if (mtu < MIN_MTU)
953      err = "Given MTU value (%ld) is too small.\n";
954    else if (mtu > MAX_MTU)
955      err = "Given MTU value (%ld) is too big.\n";
956    else {
957      VarPrefMTU = mtu;
958      return 0;
959    }
960    LogPrintf(LogWARN, err, mtu);
961  }
962
963  return -1;
964}
965
966static int
967SetIdleTimeout(list, argc, argv)
968struct cmdtab *list;
969int argc;
970char **argv;
971{
972  if (argc-- > 0) {
973    VarIdleTimeout = atoi(*argv++);
974    UpdateIdleTimer();  /* If we're connected, restart the idle timer */
975    if (argc-- > 0) {
976      VarLqrTimeout = atoi(*argv++);
977      if (VarLqrTimeout < 1)
978	VarLqrTimeout = 30;
979      if (argc > 0) {
980	VarRetryTimeout = atoi(*argv);
981	if (VarRetryTimeout < 1 || VarRetryTimeout > 10)
982	  VarRetryTimeout = 3;
983      }
984    }
985    return 0;
986  }
987
988  return -1;
989}
990
991struct in_addr
992GetIpAddr(cp)
993char *cp;
994{
995  struct hostent *hp;
996  struct in_addr ipaddr;
997
998  hp = gethostbyname(cp);
999  if (hp && hp->h_addrtype == AF_INET)
1000    bcopy(hp->h_addr, &ipaddr, hp->h_length);
1001  else if (inet_aton(cp, &ipaddr) == 0)
1002    ipaddr.s_addr = 0;
1003  return(ipaddr);
1004}
1005
1006static int
1007SetInterfaceAddr(list, argc, argv)
1008struct cmdtab *list;
1009int argc;
1010char **argv;
1011{
1012
1013  DefMyAddress.ipaddr.s_addr = DefHisAddress.ipaddr.s_addr = 0L;
1014  if (argc > 4)
1015     return -1;
1016
1017  if (argc > 0) {
1018    if (ParseAddr(argc, argv++,
1019            &DefMyAddress.ipaddr,
1020	    &DefMyAddress.mask,
1021	    &DefMyAddress.width) == 0)
1022       return 1;
1023    if (--argc > 0) {
1024      if (ParseAddr(argc, argv++,
1025		    &DefHisAddress.ipaddr,
1026		    &DefHisAddress.mask,
1027		    &DefHisAddress.width) == 0)
1028	 return 2;
1029      if (--argc > 0) {
1030        ifnetmask = GetIpAddr(*argv);
1031    	if (--argc > 0) {
1032	   if (ParseAddr(argc, argv++,
1033			 &DefTriggerAddress.ipaddr,
1034			 &DefTriggerAddress.mask,
1035			 &DefTriggerAddress.width) == 0)
1036	      return 3;
1037	}
1038      }
1039    }
1040  }
1041  /*
1042   * For backwards compatibility, 0.0.0.0 means any address.
1043   */
1044  if (DefMyAddress.ipaddr.s_addr == 0) {
1045    DefMyAddress.mask.s_addr = 0;
1046    DefMyAddress.width = 0;
1047  }
1048  if (DefHisAddress.ipaddr.s_addr == 0) {
1049    DefHisAddress.mask.s_addr = 0;
1050    DefHisAddress.width = 0;
1051  }
1052
1053  if ((mode & MODE_AUTO) ||
1054	((mode & MODE_DEDICATED) && dstsystem)) {
1055    if (OsSetIpaddress(DefMyAddress.ipaddr, DefHisAddress.ipaddr, ifnetmask) < 0)
1056       return 4;
1057  }
1058  return 0;
1059}
1060
1061#ifndef NOMSEXT
1062
1063void
1064SetMSEXT(pri_addr, sec_addr, argc, argv)
1065struct in_addr *pri_addr;
1066struct in_addr *sec_addr;
1067int argc;
1068char **argv;
1069{
1070  int dummyint;
1071  struct in_addr dummyaddr;
1072
1073  pri_addr->s_addr = sec_addr->s_addr = 0L;
1074
1075  if( argc > 0 ) {
1076    ParseAddr(argc, argv++, pri_addr, &dummyaddr, &dummyint);
1077    if( --argc > 0 )
1078      ParseAddr(argc, argv++, sec_addr, &dummyaddr, &dummyint);
1079    else
1080      sec_addr->s_addr = pri_addr->s_addr;
1081  }
1082
1083 /*
1084  * if the primary/secondary ns entries are 0.0.0.0 we should
1085  * set them to either the localhost's ip, or the values in
1086  * /etc/resolv.conf ??
1087  *
1088  * up to you if you want to implement this...
1089  */
1090
1091}
1092
1093static int
1094SetNS(list, argc, argv)
1095struct cmdtab *list;
1096int argc;
1097char **argv;
1098{
1099  SetMSEXT(&ns_entries[0], &ns_entries[1], argc, argv);
1100  return 0;
1101}
1102
1103static int
1104SetNBNS(list, argc, argv)
1105struct cmdtab *list;
1106int argc;
1107char **argv;
1108{
1109  SetMSEXT(&nbns_entries[0], &nbns_entries[1], argc, argv);
1110  return 0;
1111}
1112
1113#endif /* MS_EXT */
1114
1115#define	VAR_AUTHKEY	0
1116#define	VAR_DIAL	1
1117#define	VAR_LOGIN	2
1118#define	VAR_AUTHNAME	3
1119#define	VAR_DEVICE	4
1120#define	VAR_ACCMAP	5
1121#define	VAR_PHONE	6
1122
1123static int
1124SetVariable(list, argc, argv, param)
1125struct cmdtab *list;
1126int argc;
1127char **argv;
1128int param;
1129{
1130  u_long map;
1131  char *arg;
1132
1133  if (argc > 0)
1134    arg = *argv;
1135  else
1136    arg = "";
1137
1138  switch (param) {
1139    case VAR_AUTHKEY:
1140      strncpy(VarAuthKey, arg, sizeof(VarAuthKey)-1);
1141      VarAuthKey[sizeof(VarAuthKey)-1] = '\0';
1142      break;
1143    case VAR_AUTHNAME:
1144      strncpy(VarAuthName, arg, sizeof(VarAuthName)-1);
1145      VarAuthName[sizeof(VarAuthName)-1] = '\0';
1146      break;
1147    case VAR_DIAL:
1148      strncpy(VarDialScript, arg, sizeof(VarDialScript)-1);
1149      VarDialScript[sizeof(VarDialScript)-1] = '\0';
1150      break;
1151    case VAR_LOGIN:
1152      strncpy(VarLoginScript, arg, sizeof(VarLoginScript)-1);
1153      VarLoginScript[sizeof(VarLoginScript)-1] = '\0';
1154      break;
1155    case VAR_DEVICE:
1156      CloseModem();
1157      strncpy(VarDevice, arg, sizeof(VarDevice)-1);
1158      VarDevice[sizeof(VarDevice)-1] = '\0';
1159      VarBaseDevice = rindex(VarDevice, '/');
1160      VarBaseDevice = VarBaseDevice ? VarBaseDevice + 1 : "";
1161      break;
1162    case VAR_ACCMAP:
1163      sscanf(arg, "%lx", &map);
1164      VarAccmap = map;
1165      break;
1166    case VAR_PHONE:
1167      strncpy(VarPhoneList, arg, sizeof(VarPhoneList)-1);
1168      VarPhoneList[sizeof(VarPhoneList)-1] = '\0';
1169      strcpy(VarPhoneCopy, VarPhoneList);
1170      VarNextPhone = VarPhoneCopy;
1171      break;
1172  }
1173  return 0;
1174}
1175
1176static int SetCtsRts(list, argc, argv)
1177struct cmdtab *list;
1178int argc;
1179char **argv;
1180{
1181  if (argc > 0) {
1182    if (strcmp(*argv, "on") == 0)
1183      VarCtsRts = TRUE;
1184    else if (strcmp(*argv, "off") == 0)
1185      VarCtsRts = FALSE;
1186    else
1187      return -1;
1188    return 0;
1189  }
1190  return -1;
1191}
1192
1193
1194static int SetOpenMode(list, argc, argv)
1195struct cmdtab *list;
1196int argc;
1197char **argv;
1198{
1199  if (argc > 0) {
1200    if (strcmp(*argv, "active") == 0)
1201      VarOpenMode = OPEN_ACTIVE;
1202    else if (strcmp(*argv, "passive") == 0)
1203      VarOpenMode = OPEN_PASSIVE;
1204    else
1205      return -1;
1206    return 0;
1207  }
1208  return -1;
1209}
1210
1211extern int SetIfilter(), SetOfilter(), SetDfilter(), SetAfilter();
1212
1213struct cmdtab const SetCommands[] = {
1214  { "accmap",   NULL,	  SetVariable,		LOCAL_AUTH,
1215	"Set accmap value", "set accmap hex-value", (void *)VAR_ACCMAP},
1216  { "afilter",  NULL,     SetAfilter, 		LOCAL_AUTH,
1217	"Set keep Alive filter", "set afilter ..."},
1218  { "authkey",  "key",     SetVariable,		LOCAL_AUTH,
1219	"Set authentication key", "set authkey|key key", (void *)VAR_AUTHKEY},
1220  { "authname", NULL,     SetVariable,		LOCAL_AUTH,
1221	"Set authentication name", "set authname name", (void *)VAR_AUTHNAME},
1222  { "ctsrts", NULL,	  SetCtsRts,		LOCAL_AUTH,
1223	"Use CTS/RTS modem signalling", "set ctsrts [on|off]"},
1224  { "device",     "line", SetVariable, 		LOCAL_AUTH,
1225	"Set modem device name", "set device|line device-name", (void *)VAR_DEVICE},
1226  { "dfilter",  NULL,     SetDfilter,		 LOCAL_AUTH,
1227	"Set demand filter", "set dfilter ..."},
1228  { "dial",     NULL,     SetVariable, 		LOCAL_AUTH,
1229	"Set dialing script", "set dial chat-script", (void *)VAR_DIAL},
1230  { "escape",   NULL,	  SetEscape, 		LOCAL_AUTH,
1231	"Set escape characters", "set escape hex-digit ..."},
1232  { "ifaddr",   NULL,   SetInterfaceAddr,	LOCAL_AUTH,
1233	"Set destination address", "set ifaddr [src-addr [dst-addr [netmask [trg-addr]]]]"},
1234  { "ifilter",  NULL,     SetIfilter, 		LOCAL_AUTH,
1235	"Set input filter", "set ifilter ..."},
1236  { "log",    NULL,	  SetLogLevel,	LOCAL_AUTH,
1237	"Set log level", "set log [+|-]value..."},
1238  { "login",    NULL,     SetVariable,		LOCAL_AUTH,
1239	"Set login script", "set login chat-script",	(void *)VAR_LOGIN },
1240  { "mru",      NULL,     SetInitialMRU,	LOCAL_AUTH,
1241	"Set Initial MRU value", "set mru value" },
1242  { "mtu",      NULL,     SetPreferredMTU,	LOCAL_AUTH,
1243	"Set Preferred MTU value", "set mtu value" },
1244  { "ofilter",  NULL,	  SetOfilter,		LOCAL_AUTH,
1245	"Set output filter", "set ofilter ..." },
1246  { "openmode", NULL,	  SetOpenMode,		LOCAL_AUTH,
1247	"Set open mode", "set openmode [active|passive]"},
1248  { "parity",   NULL,     SetModemParity,	LOCAL_AUTH,
1249	"Set modem parity", "set parity [odd|even|none]"},
1250  { "phone",    NULL,     SetVariable,		LOCAL_AUTH,
1251	"Set telephone number(s)", "set phone phone1[:phone2[...]]", (void *)VAR_PHONE },
1252  { "reconnect",NULL,     SetReconnect,		LOCAL_AUTH,
1253	"Set Reconnect timeout", "set reconnect value ntries"},
1254  { "redial",   NULL,     SetRedialTimeout,	LOCAL_AUTH,
1255	"Set Redial timeout", "set redial value|random[.value|random] [dial_attempts]"},
1256  { "speed",    NULL,     SetModemSpeed,	LOCAL_AUTH,
1257	"Set modem speed", "set speed value"},
1258  { "timeout",  NULL,     SetIdleTimeout,	LOCAL_AUTH,
1259	"Set Idle timeout", "set timeout value"},
1260#ifndef NOMSEXT
1261  { "ns",	NULL,	  SetNS,		LOCAL_AUTH,
1262	"Set NameServer", "set ns pri-addr [sec-addr]"},
1263  { "nbns",	NULL,	  SetNBNS,		LOCAL_AUTH,
1264	"Set NetBIOS NameServer", "set nbns pri-addr [sec-addr]"},
1265#endif
1266  { "help",     "?",      HelpCommand,		LOCAL_AUTH | LOCAL_NO_AUTH,
1267	"Display this message", "set help|?", (void *)SetCommands},
1268  { NULL,       NULL,     NULL },
1269};
1270
1271static int
1272SetCommand(list, argc, argv)
1273struct cmdtab *list;
1274int argc;
1275char **argv;
1276{
1277  if (argc > 0)
1278    FindExec(SetCommands, argc, argv);
1279  else if (VarTerm)
1280    fprintf(VarTerm, "Use `set ?' to get a list or `set ? <var>' for"
1281	    " syntax help.\n");
1282  else
1283    LogPrintf(LogWARN, "set command must have arguments\n");
1284
1285  return 0;
1286}
1287
1288
1289static int
1290AddCommand(list, argc, argv)
1291struct cmdtab *list;
1292int argc;
1293char **argv;
1294{
1295  struct in_addr dest, gateway, netmask;
1296
1297  if (argc == 3) {
1298    dest = GetIpAddr(argv[0]);
1299    netmask = GetIpAddr(argv[1]);
1300    if (strcasecmp(argv[2], "HISADDR") == 0)
1301      gateway = IpcpInfo.his_ipaddr;
1302    else
1303      gateway = GetIpAddr(argv[2]);
1304    OsSetRoute(RTM_ADD, dest, gateway, netmask);
1305    return 0;
1306  }
1307
1308  return -1;
1309}
1310
1311static int
1312DeleteCommand(list, argc, argv)
1313struct cmdtab *list;
1314int argc;
1315char **argv;
1316{
1317  struct in_addr dest, gateway, netmask;
1318
1319  if (argc >= 2) {
1320    dest = GetIpAddr(argv[0]);
1321    if (strcasecmp(argv[1], "HISADDR") == 0)
1322      gateway = IpcpInfo.his_ipaddr;
1323    else
1324      gateway = GetIpAddr(argv[1]);
1325    netmask.s_addr = 0;
1326    if (argc == 3) {
1327      if (inet_aton(argv[2], &netmask) == 0) {
1328	LogPrintf(LogWARN, "Bad netmask value.\n");
1329	return -1;
1330      }
1331    }
1332    OsSetRoute(RTM_DELETE, dest, gateway, netmask);
1333  } else if (argc == 1 && strcasecmp(argv[0], "all") == 0) {
1334    DeleteIfRoutes(0);
1335  } else
1336    return -1;
1337
1338  return 0;
1339}
1340
1341static int AliasEnable();
1342static int AliasOption();
1343
1344static struct cmdtab const AliasCommands[] =
1345{
1346  { "enable",   NULL,     AliasEnable,          LOCAL_AUTH,
1347        "enable IP aliasing", "alias enable [yes|no]"},
1348  { "port",   NULL,     AliasRedirectPort,          LOCAL_AUTH,
1349        "port redirection", "alias port [proto addr_local:port_local  port_alias]"},
1350  { "addr",   NULL,     AliasRedirectAddr,          LOCAL_AUTH,
1351        "static address translation", "alias addr [addr_local addr_alias]"},
1352  { "deny_incoming",  NULL,    AliasOption,     LOCAL_AUTH,
1353        "stop incoming connections",   "alias deny_incoming [yes|no]",
1354        (void*)PKT_ALIAS_DENY_INCOMING},
1355  { "log",  NULL,     AliasOption,              LOCAL_AUTH,
1356        "log aliasing link creation",           "alias log [yes|no]",
1357        (void*)PKT_ALIAS_LOG},
1358  { "same_ports", NULL,     AliasOption,        LOCAL_AUTH,
1359        "try to leave port numbers unchanged", "alias same_ports [yes|no]",
1360        (void*)PKT_ALIAS_SAME_PORTS},
1361  { "use_sockets", NULL,     AliasOption,       LOCAL_AUTH,
1362        "allocate host sockets", "alias use_sockets [yes|no]",
1363        (void*)PKT_ALIAS_USE_SOCKETS },
1364  { "unregistered_only", NULL,     AliasOption, LOCAL_AUTH,
1365        "alias unregistered (private) IP address space only",
1366        "alias unregistered_only [yes|no]",
1367        (void*)PKT_ALIAS_UNREGISTERED_ONLY},
1368  { "help",     "?",      HelpCommand,          LOCAL_AUTH | LOCAL_NO_AUTH,
1369        "Display this message", "alias help|?",
1370        (void *)AliasCommands},
1371  { NULL,       NULL,     NULL },
1372};
1373
1374
1375static int
1376AliasCommand(list, argc, argv)
1377struct cmdtab *list;
1378int argc;
1379char **argv;
1380{
1381  if (argc > 0)
1382    FindExec(AliasCommands, argc, argv);
1383  else if (VarTerm)
1384    fprintf(VarTerm, "Use `alias help' to get a list or `alias help <option>'"
1385	    " for syntax help.\n");
1386  else
1387    LogPrintf(LogWARN, "alias command must have arguments\n");
1388
1389  return 0;
1390}
1391
1392static int
1393AliasEnable(list, argc, argv)
1394struct cmdtab *list;
1395int argc;
1396char **argv;
1397{
1398  if (argc == 1)
1399    if (strcasecmp(argv[0], "yes") == 0) {
1400      if (!(mode & MODE_ALIAS)) {
1401        if (loadAliasHandlers(&VarAliasHandlers) == 0) {
1402          mode |= MODE_ALIAS;
1403          return 0;
1404        }
1405        LogPrintf(LogWARN, "Cannot load alias library\n");
1406        return 1;
1407      }
1408      return 0;
1409    } else if (strcasecmp(argv[0], "no") == 0) {
1410      if (mode & MODE_ALIAS) {
1411        unloadAliasHandlers();
1412        mode &= ~MODE_ALIAS;
1413      }
1414      return 0;
1415    }
1416
1417  return -1;
1418}
1419
1420
1421static int
1422AliasOption(list, argc, argv, param)
1423struct cmdtab *list;
1424int argc;
1425char **argv;
1426void* param;
1427{
1428   if (argc == 1)
1429     if (strcasecmp(argv[0], "yes") == 0) {
1430       if (mode & MODE_ALIAS) {
1431         VarSetPacketAliasMode((unsigned)param, (unsigned)param);
1432         return 0;
1433       }
1434       LogPrintf(LogWARN, "alias not enabled\n");
1435     } else if (strcmp(argv[0], "no") == 0) {
1436       if (mode & MODE_ALIAS) {
1437         VarSetPacketAliasMode(0, (unsigned)param);
1438         return 0;
1439       }
1440       LogPrintf(LogWARN, "alias not enabled\n");
1441     }
1442
1443   return -1;
1444}
1445