freebsd-skq/usr.sbin/ppp/command.c

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1995-01-31 06:29:58 +00:00
/*
* PPP User command processing module
*
* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
*
* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the Internet Initiative Japan, Inc. The name of the
* IIJ may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
* $Id: command.c,v 1.66 1997/07/12 19:22:34 brian Exp $
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*
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*/
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#include <sys/types.h>
#include <sys/stat.h>
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#include <ctype.h>
#include <termios.h>
#include <sys/wait.h>
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#include <time.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/route.h>
#include <paths.h>
#include <alias.h>
#include <fcntl.h>
#include <errno.h>
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#include "fsm.h"
#include "phase.h"
#include "lcp.h"
#include "ipcp.h"
#include "modem.h"
#include "filter.h"
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#include "command.h"
#include "alias_cmd.h"
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#include "hdlc.h"
#include "loadalias.h"
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#include "vars.h"
#include "systems.h"
#include "chat.h"
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#include "os.h"
#include "timeout.h"
#include "server.h"
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extern void Cleanup(), TtyTermMode(), PacketMode();
extern int EnableCommand(), DisableCommand(), DisplayCommand();
extern int AcceptCommand(), DenyCommand();
static int AliasCommand();
extern int LocalAuthCommand();
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extern int LoadCommand(), SaveCommand();
extern int ChangeParity(char *);
extern int SelectSystem();
extern int ShowRoute();
extern void TtyOldMode(), TtyCommandMode();
extern struct pppvars pppVars;
extern struct cmdtab const SetCommands[];
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extern char *IfDevName;
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struct in_addr ifnetmask;
int randinit;
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static int ShowCommand(), TerminalCommand(), QuitCommand();
static int CloseCommand(), DialCommand(), DownCommand();
static int SetCommand(), AddCommand(), DeleteCommand();
static int ShellCommand();
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static int
HelpCommand(list, argc, argv, plist)
struct cmdtab *list;
int argc;
char **argv;
struct cmdtab *plist;
{
struct cmdtab *cmd;
int n;
if (!VarTerm)
return 0;
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if (argc > 0) {
for (cmd = plist; cmd->name; cmd++)
if (strcasecmp(cmd->name, *argv) == 0 && (cmd->lauth & VarLocalAuth)) {
fprintf(VarTerm, "%s\n", cmd->syntax);
return 0;
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}
return -1;
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}
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n = 0;
for (cmd = plist; cmd->func; cmd++)
if (cmd->name && (cmd->lauth & VarLocalAuth)) {
fprintf(VarTerm, " %-9s: %-20s\n", cmd->name, cmd->helpmes);
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n++;
}
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if (n & 1)
fprintf(VarTerm, "\n");
return 0;
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}
int
IsInteractive()
{
char *mes = NULL;
if (mode & MODE_DDIAL)
mes = "Working in dedicated dial mode.";
else if (mode & MODE_BACKGROUND)
mes = "Working in background mode.";
else if (mode & MODE_AUTO)
mes = "Working in auto mode.";
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else if (mode & MODE_DIRECT)
mes = "Working in direct mode.";
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else if (mode & MODE_DEDICATED)
mes = "Working in dedicated mode.";
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if (mes) {
if (VarTerm)
fprintf(VarTerm, "%s\n", mes);
return 0;
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}
return 1;
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}
static int
DialCommand(cmdlist, argc, argv)
struct cmdtab *cmdlist;
int argc;
char **argv;
{
int tries;
int res;
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if (LcpFsm.state > ST_CLOSED) {
if (VarTerm)
fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
return 0;
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}
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if (!IsInteractive())
return(1);
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if (argc > 0) {
if (SelectSystem(*argv, CONFFILE) < 0) {
if (VarTerm)
fprintf(VarTerm, "%s: not found.\n", *argv);
return -1;
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}
}
tries = 0;
do {
if (VarTerm)
fprintf(VarTerm, "Dial attempt %u of %d\n", ++tries, VarDialTries);
modem = OpenModem(mode);
if (modem < 0) {
if (VarTerm)
fprintf(VarTerm, "Failed to open modem.\n");
break;
}
if ((res = DialModem()) == EX_DONE) {
sleep(1);
ModemTimeout();
PacketMode();
break;
} else if (res == EX_SIG)
return 1;
} while (VarDialTries == 0 || tries < VarDialTries);
return 0;
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}
static int
ShellCommand(cmdlist, argc, argv)
struct cmdtab *cmdlist;
int argc;
char **argv;
{
const char *shell;
pid_t shpid;
FILE *oVarTerm;
#ifdef SHELL_ONLY_INTERACTIVELY
/* we're only allowed to shell when we run ppp interactively */
if (mode != MODE_INTER) {
LogPrintf(LogWARN, "Can only start a shell in interactive mode\n");
return 1;
}
#endif
#ifdef NO_SHELL_IN_AUTO_INTERACTIVE
/*
* we want to stop shell commands when we've got a telnet connection
* to an auto mode ppp
*/
if ((mode & (MODE_AUTO|MODE_INTER)) == (MODE_AUTO|MODE_INTER)) {
LogPrintf(LogWARN, "Shell is not allowed interactively in auto mode\n");
return 1;
}
#endif
if(argc == 0 && !(mode & MODE_INTER)) {
LogPrintf(LogWARN, "Can only start an interactive shell in"
" interactive mode\n");
return 1;
}
if((shell = getenv("SHELL")) == 0)
shell = _PATH_BSHELL;
if((shpid = fork()) == 0) {
int dtablesize, i, fd;
if (VarTerm)
fd = fileno(VarTerm);
else if ((fd = open("/dev/null", O_RDWR)) == -1) {
LogPrintf(LogALERT, "Failed to open /dev/null: %s\n", strerror(errno));
exit(1);
}
for (i = 0; i < 3; i++)
dup2(fd, i);
if (fd > 2)
if (VarTerm) {
oVarTerm = VarTerm;
VarTerm = 0;
if (oVarTerm && oVarTerm != stdout)
fclose(oVarTerm);
} else
close(fd);
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for (dtablesize = getdtablesize(), i = 3; i < dtablesize; i++)
(void)close(i);
/*
* We are running setuid, we should change to
* real user for avoiding security problems.
*/
if (setgid(getgid()) < 0) {
LogPrintf(LogERROR, "setgid: %s\n", strerror(errno));
exit(1);
}
if (setuid(getuid()) < 0) {
LogPrintf(LogERROR, "setuid: %s\n", strerror(errno));
exit(1);
}
TtyOldMode();
if(argc > 0) {
/* substitute pseudo args */
for (i=1; i<argc; i++)
if (strcasecmp(argv[i], "HISADDR") == 0)
argv[i] = strdup(inet_ntoa(IpcpInfo.his_ipaddr));
else if (strcasecmp(argv[i], "INTERFACE") == 0)
argv[i] = strdup(IfDevName);
else if (strcasecmp(argv[i], "MYADDR") == 0)
argv[i] = strdup(inet_ntoa(IpcpInfo.want_ipaddr));
(void)execvp(argv[0], argv);
}
else
(void)execl(shell, shell, NULL);
LogPrintf(LogWARN, "exec() of %s failed\n", argc > 0 ? argv[0] : shell);
exit(255);
}
if( shpid == (pid_t)-1 ) {
LogPrintf(LogERROR, "Fork failed: %s\n", strerror(errno));
} else {
int status;
(void)waitpid(shpid, &status, 0);
}
TtyCommandMode(1);
return(0);
}
struct cmdtab const Commands[] = {
{ "accept", NULL, AcceptCommand, LOCAL_AUTH,
"accept option request", "accept option .."},
{ "add", NULL, AddCommand, LOCAL_AUTH,
"add route", "add dest mask gateway"},
{ "close", NULL, CloseCommand, LOCAL_AUTH,
"Close connection", "close"},
{ "delete", NULL, DeleteCommand, LOCAL_AUTH,
"delete route", "delete ALL | dest [gateway [mask]]"},
{ "deny", NULL, DenyCommand, LOCAL_AUTH,
"Deny option request", "deny option .."},
{ "dial", "call", DialCommand, LOCAL_AUTH,
"Dial and login", "dial|call [remote]"},
{ "disable", NULL, DisableCommand, LOCAL_AUTH,
"Disable option", "disable option .."},
{ "display", NULL, DisplayCommand, LOCAL_AUTH,
"Display option configs", "display"},
{ "enable", NULL, EnableCommand, LOCAL_AUTH,
"Enable option", "enable option .."},
{ "passwd", NULL, LocalAuthCommand,LOCAL_NO_AUTH,
"Password for manipulation", "passwd option .."},
{ "load", NULL, LoadCommand, LOCAL_AUTH,
"Load settings", "load [remote]"},
{ "save", NULL, SaveCommand, LOCAL_AUTH,
"Save settings", "save"},
{ "set", "setup", SetCommand, LOCAL_AUTH,
"Set parameters", "set[up] var value"},
{ "shell", "!", ShellCommand, LOCAL_AUTH,
"Run a subshell", "shell|! [sh command]"},
{ "show", NULL, ShowCommand, LOCAL_AUTH,
"Show status and statictics", "show var"},
{ "term", NULL, TerminalCommand,LOCAL_AUTH,
"Enter to terminal mode", "term"},
{ "alias", NULL, AliasCommand, LOCAL_AUTH,
"alias control", "alias option [yes|no]"},
{ "quit", "bye", QuitCommand, LOCAL_AUTH | LOCAL_NO_AUTH,
"Quit PPP program", "quit|bye [all]"},
{ "help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH,
"Display this message", "help|? [command]", (void *)Commands },
{ NULL, "down", DownCommand, LOCAL_AUTH,
"Generate down event", "down"},
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{ NULL, NULL, NULL },
};
extern int ReportCcpStatus();
extern int ReportLcpStatus();
extern int ReportIpcpStatus();
extern int ReportProtStatus();
extern int ReportCompress();
extern int ShowModemStatus();
extern int ReportHdlcStatus();
extern int ShowMemMap();
static int ShowLogLevel()
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{
int i;
if (!VarTerm)
return 0;
fprintf(VarTerm, "Log:");
for (i = LogMIN; i < LogMAXCONF; i++) {
if (LogIsKept(i))
fprintf(VarTerm, " %s", LogName(i));
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}
fprintf(VarTerm, "\n");
return 0;
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}
static int ShowEscape()
{
int code, bit;
if (!VarTerm)
return 0;
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if (EscMap[32]) {
for (code = 0; code < 32; code++)
if (EscMap[code])
for (bit = 0; bit < 8; bit++)
if (EscMap[code] & (1<<bit))
fprintf(VarTerm, " 0x%02x", (code << 3) + bit);
fprintf(VarTerm, "\n");
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}
return 1;
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}
static int ShowTimeout()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, " Idle Timer: %d secs LQR Timer: %d secs"
" Retry Timer: %d secs\n", VarIdleTimeout, VarLqrTimeout,
VarRetryTimeout);
return 1;
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}
static int ShowAuthKey()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, "AuthName = %s\n", VarAuthName);
fprintf(VarTerm, "AuthKey = %s\n", VarAuthKey);
return 1;
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}
static int ShowVersion()
{
extern char VarVersion[];
extern char VarLocalVersion[];
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if (!VarTerm)
return 0;
fprintf(VarTerm, "%s - %s \n", VarVersion, VarLocalVersion);
return 1;
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}
static int ShowInitialMRU()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, " Initial MRU: %ld\n", VarMRU);
return 1;
}
static int ShowPreferredMTU()
{
if (!VarTerm)
return 0;
if (VarPrefMTU)
fprintf(VarTerm, " Preferred MTU: %ld\n", VarPrefMTU);
else
fprintf(VarTerm, " Preferred MTU: unspecified\n");
return 1;
}
static int ShowReconnect()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, " Reconnect Timer: %d, %d tries\n",
VarReconnectTimer, VarReconnectTries);
return 1;
}
static int ShowRedial()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, " Redial Timer: ");
if (VarRedialTimeout >= 0) {
fprintf(VarTerm, " %d seconds, ", VarRedialTimeout);
}
else {
fprintf(VarTerm, " Random 0 - %d seconds, ", REDIAL_PERIOD);
}
fprintf(VarTerm, " Redial Next Timer: ");
if (VarRedialNextTimeout >= 0) {
fprintf(VarTerm, " %d seconds, ", VarRedialNextTimeout);
}
else {
fprintf(VarTerm, " Random 0 - %d seconds, ", REDIAL_PERIOD);
}
if (VarDialTries)
fprintf(VarTerm, "%d dial tries", VarDialTries);
fprintf(VarTerm, "\n");
return 1;
}
#ifndef NOMSEXT
static int ShowMSExt()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, " MS PPP extention values \n" );
fprintf(VarTerm, " Primary NS : %s\n", inet_ntoa( ns_entries[0] ));
fprintf(VarTerm, " Secondary NS : %s\n", inet_ntoa( ns_entries[1] ));
fprintf(VarTerm, " Primary NBNS : %s\n", inet_ntoa( nbns_entries[0] ));
fprintf(VarTerm, " Secondary NBNS : %s\n", inet_ntoa( nbns_entries[1] ));
return 1;
}
#endif
extern int ShowIfilter(), ShowOfilter(), ShowDfilter(), ShowAfilter();
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struct cmdtab const ShowCommands[] = {
{ "afilter", NULL, ShowAfilter, LOCAL_AUTH,
"Show keep Alive filters", "show afilter option .."},
{ "auth", NULL, ShowAuthKey, LOCAL_AUTH,
"Show auth name/key", "show auth"},
{ "ccp", NULL, ReportCcpStatus, LOCAL_AUTH,
"Show CCP status", "show cpp"},
{ "compress", NULL, ReportCompress, LOCAL_AUTH,
"Show compression statictics", "show compress"},
{ "dfilter", NULL, ShowDfilter, LOCAL_AUTH,
"Show Demand filters", "show dfilteroption .."},
{ "escape", NULL, ShowEscape, LOCAL_AUTH,
"Show escape characters", "show escape"},
{ "hdlc", NULL, ReportHdlcStatus, LOCAL_AUTH,
"Show HDLC error summary", "show hdlc"},
{ "ifilter", NULL, ShowIfilter, LOCAL_AUTH,
"Show Input filters", "show ifilter option .."},
{ "ipcp", NULL, ReportIpcpStatus, LOCAL_AUTH,
"Show IPCP status", "show ipcp"},
{ "lcp", NULL, ReportLcpStatus, LOCAL_AUTH,
"Show LCP status", "show lcp"},
{ "log", NULL, ShowLogLevel, LOCAL_AUTH,
"Show current log level", "show log"},
{ "mem", NULL, ShowMemMap, LOCAL_AUTH,
"Show memory map", "show mem"},
{ "modem", NULL, ShowModemStatus, LOCAL_AUTH,
"Show modem setups", "show modem"},
{ "mru", NULL, ShowInitialMRU, LOCAL_AUTH,
"Show Initial MRU", "show mru"},
{ "mtu", NULL, ShowPreferredMTU, LOCAL_AUTH,
"Show Preferred MTU", "show mtu"},
{ "ofilter", NULL, ShowOfilter, LOCAL_AUTH,
"Show Output filters", "show ofilter option .."},
{ "proto", NULL, ReportProtStatus, LOCAL_AUTH,
"Show protocol summary", "show proto"},
{ "reconnect",NULL, ShowReconnect, LOCAL_AUTH,
"Show Reconnect timer,tries", "show reconnect"},
{ "redial", NULL, ShowRedial, LOCAL_AUTH,
"Show Redial timeout value", "show redial"},
{ "route", NULL, ShowRoute, LOCAL_AUTH,
"Show routing table", "show route"},
{ "timeout", NULL, ShowTimeout, LOCAL_AUTH,
"Show Idle timeout value", "show timeout"},
#ifndef NOMSEXT
{ "msext", NULL, ShowMSExt, LOCAL_AUTH,
"Show MS PPP extentions", "show msext"},
#endif
{ "version", NULL, ShowVersion, LOCAL_NO_AUTH | LOCAL_AUTH,
"Show version string", "show version"},
{ "help", "?", HelpCommand, LOCAL_NO_AUTH | LOCAL_AUTH,
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"Display this message", "show help|? [command]", (void *)ShowCommands},
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{ NULL, NULL, NULL },
};
struct cmdtab *
FindCommand(cmds, str, pmatch)
struct cmdtab *cmds;
char *str;
int *pmatch;
{
int nmatch;
int len;
struct cmdtab *found;
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found = NULL;
len = strlen(str);
nmatch = 0;
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while (cmds->func) {
if (cmds->name && strncasecmp(str, cmds->name, len) == 0) {
if (cmds->name[len] == '\0') {
*pmatch = 1;
return cmds;
}
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nmatch++;
found = cmds;
} else if(cmds->alias && strncasecmp(str, cmds->alias, len) == 0) {
if (cmds->alias[len] == '\0') {
*pmatch = 1;
return cmds;
}
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nmatch++;
found = cmds;
}
cmds++;
}
*pmatch = nmatch;
return found;
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}
int
FindExec(cmdlist, argc, argv)
struct cmdtab *cmdlist;
int argc;
char **argv;
{
struct cmdtab *cmd;
int val = 1;
int nmatch;
cmd = FindCommand(cmdlist, *argv, &nmatch);
if (nmatch > 1)
LogPrintf(LogWARN, "%s: Ambiguous command\n", *argv);
else if (cmd && ( cmd->lauth & VarLocalAuth ) )
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val = (cmd->func)(cmd, --argc, ++argv, cmd->args);
else
LogPrintf(LogWARN, "%s: Invalid command\n", *argv);
if (val == -1)
LogPrintf(LogWARN, "Usage: %s\n", cmd->syntax);
else if(val)
LogPrintf(LogCOMMAND, "%s: Failed %d\n", *argv, val);
return val;
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}
int aft_cmd = 1;
extern int TermMode;
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void
Prompt()
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{
char *pconnect, *pauth;
if (!(mode & MODE_INTER) || !VarTerm || TermMode)
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return;
if (!aft_cmd)
fprintf(VarTerm, "\n");
else
aft_cmd = 0;
if ( VarLocalAuth == LOCAL_AUTH )
pauth = " ON ";
else
pauth = " on ";
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if (IpcpFsm.state == ST_OPENED && phase == PHASE_NETWORK)
pconnect = "PPP";
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else
pconnect = "ppp";
fprintf(VarTerm, "%s%s%s> ", pconnect, pauth, VarShortHost);
fflush(VarTerm);
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}
void
DecodeCommand(buff, nb, prompt)
char *buff;
int nb;
int prompt;
{
char *vector[20];
char **argv;
int argc;
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char *cp;
if (nb > 0) {
cp = buff + strcspn(buff, "\r\n");
if (cp)
*cp = '\0';
argc = MakeArgs(buff, vector, VECSIZE(vector));
argv = vector;
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if (argc > 0)
FindExec(Commands, argc, argv);
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}
if (prompt)
Prompt();
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}
static int
ShowCommand(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc > 0)
FindExec(ShowCommands, argc, argv);
else if (VarTerm)
fprintf(VarTerm, "Use ``show ?'' to get a list.\n");
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else
LogPrintf(LogWARN, "show command must have arguments\n");
return 0;
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}
static int
TerminalCommand()
{
if (LcpFsm.state > ST_CLOSED) {
if (VarTerm)
fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
return 1;
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}
if (!IsInteractive())
return(1);
modem = OpenModem(mode);
if (modem < 0) {
if (VarTerm)
fprintf(VarTerm, "Failed to open modem.\n");
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return(1);
}
if (VarTerm) {
fprintf(VarTerm, "Enter to terminal mode.\n");
fprintf(VarTerm, "Type `~?' for help.\n");
}
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TtyTermMode();
return(0);
}
static int
QuitCommand(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
FILE *oVarTerm;
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if (mode & (MODE_DIRECT|MODE_DEDICATED|MODE_AUTO)) {
if (argc > 0 && (VarLocalAuth & LOCAL_AUTH)) {
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Cleanup(EX_NORMAL);
mode &= ~MODE_INTER;
oVarTerm = VarTerm;
VarTerm = 0;
if (oVarTerm && oVarTerm != stdout)
fclose(oVarTerm);
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} else {
LogPrintf(LogPHASE, "Client connection closed.\n");
VarLocalAuth = LOCAL_NO_AUTH;
mode &= ~MODE_INTER;
oVarTerm = VarTerm;
VarTerm = 0;
if (oVarTerm && oVarTerm != stdout)
fclose(oVarTerm);
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close(netfd);
netfd = -1;
}
} else
Cleanup(EX_NORMAL);
return 0;
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}
static int
CloseCommand()
{
reconnect(RECON_FALSE);
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LcpClose();
if (mode & MODE_BACKGROUND)
Cleanup(EX_NORMAL);
return 0;
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}
static int
DownCommand()
{
LcpDown();
return 0;
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}
static int
SetModemSpeed(list, argc, argv)
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struct cmdtab *list;
int argc;
char **argv;
{
int speed;
if (argc > 0) {
if (strcmp(*argv, "sync") == 0) {
VarSpeed = 0;
return 0;
}
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speed = atoi(*argv);
if (IntToSpeed(speed) != B0) {
VarSpeed = speed;
return 0;
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}
LogPrintf(LogWARN, "%s: Invalid speed\n", *argv);
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}
return -1;
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}
static int
SetReconnect(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc == 2) {
VarReconnectTimer = atoi(argv[0]);
VarReconnectTries = atoi(argv[1]);
return 0;
}
return -1;
}
static int
SetRedialTimeout(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
int timeout;
int tries;
char *dot;
if (argc == 1 || argc == 2 ) {
if (strncasecmp(argv[0], "random", 6) == 0 &&
(argv[0][6] == '\0' || argv[0][6] == '.')) {
VarRedialTimeout = -1;
if (!randinit) {
randinit = 1;
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srandomdev();
}
} else {
timeout = atoi(argv[0]);
if (timeout >= 0)
VarRedialTimeout = timeout;
else {
LogPrintf(LogWARN, "Invalid redial timeout\n");
return -1;
}
}
dot = index(argv[0],'.');
if (dot) {
if (strcasecmp(++dot, "random") == 0) {
VarRedialNextTimeout = -1;
if (!randinit) {
randinit = 1;
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srandomdev();
}
}
else {
timeout = atoi(dot);
if (timeout >= 0)
VarRedialNextTimeout = timeout;
else {
LogPrintf(LogWARN, "Invalid next redial timeout\n");
return -1;
}
}
}
else
VarRedialNextTimeout = NEXT_REDIAL_PERIOD; /* Default next timeout */
if (argc == 2) {
tries = atoi(argv[1]);
if (tries >= 0) {
VarDialTries = tries;
} else {
LogPrintf(LogWARN, "Invalid retry value\n");
return 1;
}
}
return 0;
}
return -1;
}
static int
SetServer(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
int res = -1;
if (argc > 0 && argc < 3)
if (strcasecmp(argv[0], "none") == 0) {
ServerClose();
LogPrintf(LogPHASE, "Disabling server port.\n");
res = 0;
} else if (*argv[0] == '/') {
mode_t mask;
umask(mask = umask(0));
if (argc == 2) {
unsigned m;
if (sscanf(argv[1], "%o", &m) == 1)
mask = m;
}
res = ServerLocalOpen(argv[0], mask);
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} else {
int port;
if (strspn(argv[0], "0123456789") != strlen(argv[0])) {
struct servent *s;
if ((s = getservbyname(argv[0], "tcp")) == NULL) {
port = 0;
LogPrintf(LogWARN, "%s: Invalid port or service\n", argv[0]);
} else
port = ntohs(s->s_port);
} else
port = atoi(argv[0]);
if (port)
res = ServerTcpOpen(port);
}
return res;
}
static int
SetModemParity(list, argc, argv)
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struct cmdtab *list;
int argc;
char **argv;
{
return argc > 0 ? ChangeParity(*argv) : -1;
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}
static int
SetLogLevel(list, argc, argv)
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struct cmdtab *list;
int argc;
char **argv;
{
int i;
int res;
char *arg;
res = 0;
if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-'))
LogDiscardAll();
while (argc--) {
arg = **argv == '+' || **argv == '-' ? *argv + 1 : *argv;
for (i = LogMIN; i <= LogMAX; i++)
if (strcasecmp(arg, LogName(i)) == 0) {
if (**argv == '-')
LogDiscard(i);
else
LogKeep(i);
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break;
}
if (i > LogMAX) {
LogPrintf(LogWARN, "%s: Invalid log value\n", arg);
res = -1;
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}
argv++;
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}
return res;
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}
static int
SetEscape(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
int code;
for (code = 0; code < 33; code++)
EscMap[code] = 0;
while (argc-- > 0) {
sscanf(*argv++, "%x", &code);
code &= 0xff;
EscMap[code >> 3] |= (1 << (code&7));
EscMap[32] = 1;
}
return 0;
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}
static int
SetInitialMRU(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
long mru;
char *err;
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if (argc > 0) {
mru = atol(*argv);
if (mru < MIN_MRU)
err = "Given MRU value (%ld) is too small.\n";
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else if (mru > MAX_MRU)
err = "Given MRU value (%ld) is too big.\n";
else {
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VarMRU = mru;
return 0;
}
LogPrintf(LogWARN, err, mru);
}
return -1;
}
static int
SetPreferredMTU(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
long mtu;
char *err;
if (argc > 0) {
mtu = atol(*argv);
if (mtu == 0) {
VarPrefMTU = 0;
return 0;
} else if (mtu < MIN_MTU)
err = "Given MTU value (%ld) is too small.\n";
else if (mtu > MAX_MTU)
err = "Given MTU value (%ld) is too big.\n";
else {
VarPrefMTU = mtu;
return 0;
}
LogPrintf(LogWARN, err, mtu);
}
return -1;
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}
static int
SetIdleTimeout(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc-- > 0) {
VarIdleTimeout = atoi(*argv++);
UpdateIdleTimer(); /* If we're connected, restart the idle timer */
if (argc-- > 0) {
VarLqrTimeout = atoi(*argv++);
if (VarLqrTimeout < 1)
VarLqrTimeout = 30;
if (argc > 0) {
VarRetryTimeout = atoi(*argv);
if (VarRetryTimeout < 1 || VarRetryTimeout > 10)
VarRetryTimeout = 3;
}
}
return 0;
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}
return -1;
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}
struct in_addr
GetIpAddr(cp)
char *cp;
{
struct hostent *hp;
struct in_addr ipaddr;
hp = gethostbyname(cp);
if (hp && hp->h_addrtype == AF_INET)
bcopy(hp->h_addr, &ipaddr, hp->h_length);
else if (inet_aton(cp, &ipaddr) == 0)
ipaddr.s_addr = 0;
return(ipaddr);
}
static int
SetInterfaceAddr(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
DefMyAddress.ipaddr.s_addr = DefHisAddress.ipaddr.s_addr = 0L;
if (argc > 4)
return -1;
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if (argc > 0) {
if (ParseAddr(argc, argv++,
&DefMyAddress.ipaddr,
&DefMyAddress.mask,
&DefMyAddress.width) == 0)
return 1;
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if (--argc > 0) {
if (ParseAddr(argc, argv++,
&DefHisAddress.ipaddr,
&DefHisAddress.mask,
&DefHisAddress.width) == 0)
return 2;
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if (--argc > 0) {
ifnetmask = GetIpAddr(*argv);
if (--argc > 0) {
if (ParseAddr(argc, argv++,
&DefTriggerAddress.ipaddr,
&DefTriggerAddress.mask,
&DefTriggerAddress.width) == 0)
return 3;
}
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}
}
}
/*
* For backwards compatibility, 0.0.0.0 means any address.
*/
if (DefMyAddress.ipaddr.s_addr == 0) {
DefMyAddress.mask.s_addr = 0;
DefMyAddress.width = 0;
}
if (DefHisAddress.ipaddr.s_addr == 0) {
DefHisAddress.mask.s_addr = 0;
DefHisAddress.width = 0;
}
if ((mode & MODE_AUTO) ||
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((mode & MODE_DEDICATED) && dstsystem)) {
if (OsSetIpaddress(DefMyAddress.ipaddr, DefHisAddress.ipaddr, ifnetmask) < 0)
return 4;
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}
return 0;
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}
#ifndef NOMSEXT
void
SetMSEXT(pri_addr, sec_addr, argc, argv)
struct in_addr *pri_addr;
struct in_addr *sec_addr;
int argc;
char **argv;
{
int dummyint;
struct in_addr dummyaddr;
pri_addr->s_addr = sec_addr->s_addr = 0L;
if( argc > 0 ) {
ParseAddr(argc, argv++, pri_addr, &dummyaddr, &dummyint);
if( --argc > 0 )
ParseAddr(argc, argv++, sec_addr, &dummyaddr, &dummyint);
else
sec_addr->s_addr = pri_addr->s_addr;
}
/*
* if the primary/secondary ns entries are 0.0.0.0 we should
* set them to either the localhost's ip, or the values in
* /etc/resolv.conf ??
*
* up to you if you want to implement this...
*/
}
static int
SetNS(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
SetMSEXT(&ns_entries[0], &ns_entries[1], argc, argv);
return 0;
}
static int
SetNBNS(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
SetMSEXT(&nbns_entries[0], &nbns_entries[1], argc, argv);
return 0;
}
#endif /* MS_EXT */
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#define VAR_AUTHKEY 0
#define VAR_DIAL 1
#define VAR_LOGIN 2
#define VAR_AUTHNAME 3
#define VAR_DEVICE 4
#define VAR_ACCMAP 5
#define VAR_PHONE 6
#define VAR_HANGUP 7
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static int
SetVariable(list, argc, argv, param)
struct cmdtab *list;
int argc;
char **argv;
int param;
{
u_long map;
char *arg;
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if (argc > 0)
arg = *argv;
else
arg = "";
switch (param) {
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case VAR_AUTHKEY:
strncpy(VarAuthKey, arg, sizeof(VarAuthKey)-1);
VarAuthKey[sizeof(VarAuthKey)-1] = '\0';
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break;
case VAR_AUTHNAME:
strncpy(VarAuthName, arg, sizeof(VarAuthName)-1);
VarAuthName[sizeof(VarAuthName)-1] = '\0';
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break;
case VAR_DIAL:
strncpy(VarDialScript, arg, sizeof(VarDialScript)-1);
VarDialScript[sizeof(VarDialScript)-1] = '\0';
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break;
case VAR_LOGIN:
strncpy(VarLoginScript, arg, sizeof(VarLoginScript)-1);
VarLoginScript[sizeof(VarLoginScript)-1] = '\0';
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break;
case VAR_DEVICE:
CloseModem();
strncpy(VarDevice, arg, sizeof(VarDevice)-1);
VarDevice[sizeof(VarDevice)-1] = '\0';
VarBaseDevice = rindex(VarDevice, '/');
VarBaseDevice = VarBaseDevice ? VarBaseDevice + 1 : "";
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break;
case VAR_ACCMAP:
sscanf(arg, "%lx", &map);
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VarAccmap = map;
break;
case VAR_PHONE:
strncpy(VarPhoneList, arg, sizeof(VarPhoneList)-1);
VarPhoneList[sizeof(VarPhoneList)-1] = '\0';
strcpy(VarPhoneCopy, VarPhoneList);
VarNextPhone = VarPhoneCopy;
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break;
case VAR_HANGUP:
strncpy(VarHangupScript, arg, sizeof(VarHangupScript)-1);
VarHangupScript[sizeof(VarHangupScript)-1] = '\0';
break;
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}
return 0;
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}
static int SetCtsRts(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc > 0) {
if (strcmp(*argv, "on") == 0)
VarCtsRts = TRUE;
else if (strcmp(*argv, "off") == 0)
VarCtsRts = FALSE;
else
return -1;
return 0;
}
return -1;
}
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static int SetOpenMode(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc > 0) {
if (strcmp(*argv, "active") == 0)
VarOpenMode = OPEN_ACTIVE;
else if (strcmp(*argv, "passive") == 0)
VarOpenMode = OPEN_PASSIVE;
else
return -1;
return 0;
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}
return -1;
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}
extern int SetIfilter(), SetOfilter(), SetDfilter(), SetAfilter();
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struct cmdtab const SetCommands[] = {
{ "accmap", NULL, SetVariable, LOCAL_AUTH,
"Set accmap value", "set accmap hex-value", (void *)VAR_ACCMAP},
{ "afilter", NULL, SetAfilter, LOCAL_AUTH,
"Set keep Alive filter", "set afilter ..."},
{ "authkey", "key", SetVariable, LOCAL_AUTH,
"Set authentication key", "set authkey|key key", (void *)VAR_AUTHKEY},
{ "authname", NULL, SetVariable, LOCAL_AUTH,
"Set authentication name", "set authname name", (void *)VAR_AUTHNAME},
{ "ctsrts", NULL, SetCtsRts, LOCAL_AUTH,
"Use CTS/RTS modem signalling", "set ctsrts [on|off]"},
{ "device", "line", SetVariable, LOCAL_AUTH,
"Set modem device name", "set device|line device-name", (void *)VAR_DEVICE},
{ "dfilter", NULL, SetDfilter, LOCAL_AUTH,
"Set demand filter", "set dfilter ..."},
{ "dial", NULL, SetVariable, LOCAL_AUTH,
"Set dialing script", "set dial chat-script", (void *)VAR_DIAL},
{ "escape", NULL, SetEscape, LOCAL_AUTH,
"Set escape characters", "set escape hex-digit ..."},
{ "hangup", NULL, SetVariable, LOCAL_AUTH,
"Set hangup script", "set hangup chat-script", (void *)VAR_HANGUP},
{ "ifaddr", NULL, SetInterfaceAddr, LOCAL_AUTH,
"Set destination address", "set ifaddr [src-addr [dst-addr [netmask [trg-addr]]]]"},
{ "ifilter", NULL, SetIfilter, LOCAL_AUTH,
"Set input filter", "set ifilter ..."},
{ "log", NULL, SetLogLevel, LOCAL_AUTH,
"Set log level", "set log [+|-]value..."},
{ "login", NULL, SetVariable, LOCAL_AUTH,
"Set login script", "set login chat-script", (void *)VAR_LOGIN },
{ "mru", NULL, SetInitialMRU, LOCAL_AUTH,
"Set Initial MRU value", "set mru value" },
{ "mtu", NULL, SetPreferredMTU, LOCAL_AUTH,
"Set Preferred MTU value", "set mtu value" },
{ "ofilter", NULL, SetOfilter, LOCAL_AUTH,
"Set output filter", "set ofilter ..." },
{ "openmode", NULL, SetOpenMode, LOCAL_AUTH,
"Set open mode", "set openmode [active|passive]"},
{ "parity", NULL, SetModemParity, LOCAL_AUTH,
"Set modem parity", "set parity [odd|even|none]"},
{ "phone", NULL, SetVariable, LOCAL_AUTH,
"Set telephone number(s)", "set phone phone1[:phone2[...]]", (void *)VAR_PHONE },
{ "reconnect",NULL, SetReconnect, LOCAL_AUTH,
"Set Reconnect timeout", "set reconnect value ntries"},
{ "redial", NULL, SetRedialTimeout, LOCAL_AUTH,
"Set Redial timeout", "set redial value|random[.value|random] [dial_attempts]"},
{ "server", "socket", SetServer, LOCAL_AUTH,
"Set server port", "set server|socket TcpPort|LocalName|none [mask]"},
{ "speed", NULL, SetModemSpeed, LOCAL_AUTH,
"Set modem speed", "set speed value"},
{ "timeout", NULL, SetIdleTimeout, LOCAL_AUTH,
"Set Idle timeout", "set timeout value"},
#ifndef NOMSEXT
{ "ns", NULL, SetNS, LOCAL_AUTH,
"Set NameServer", "set ns pri-addr [sec-addr]"},
{ "nbns", NULL, SetNBNS, LOCAL_AUTH,
"Set NetBIOS NameServer", "set nbns pri-addr [sec-addr]"},
#endif
{ "help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH,
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"Display this message", "set help|? [command]", (void *)SetCommands},
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{ NULL, NULL, NULL },
};
static int
SetCommand(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc > 0)
FindExec(SetCommands, argc, argv);
else if (VarTerm)
fprintf(VarTerm, "Use `set ?' to get a list or `set ? <var>' for"
" syntax help.\n");
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else
LogPrintf(LogWARN, "set command must have arguments\n");
return 0;
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}
static int
AddCommand(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
struct in_addr dest, gateway, netmask;
if (argc == 3) {
if (strcasecmp(argv[0], "MYADDR") == 0)
dest = IpcpInfo.want_ipaddr;
else
dest = GetIpAddr(argv[0]);
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netmask = GetIpAddr(argv[1]);
if (strcasecmp(argv[2], "HISADDR") == 0)
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gateway = IpcpInfo.his_ipaddr;
else
gateway = GetIpAddr(argv[2]);
OsSetRoute(RTM_ADD, dest, gateway, netmask);
return 0;
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}
return -1;
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}
static int
DeleteCommand(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
struct in_addr dest, gateway, netmask;
if (argc == 1 && strcasecmp(argv[0], "all") == 0)
DeleteIfRoutes(0);
else if (argc > 0 && argc < 4) {
if (strcasecmp(argv[0], "MYADDR") == 0)
dest = IpcpInfo.want_ipaddr;
else
dest = GetIpAddr(argv[0]);
netmask.s_addr = INADDR_ANY;
if (argc > 1) {
if (strcasecmp(argv[1], "HISADDR") == 0)
gateway = IpcpInfo.his_ipaddr;
else
gateway = GetIpAddr(argv[1]);
if (argc == 3) {
if (inet_aton(argv[2], &netmask) == 0) {
LogPrintf(LogWARN, "Bad netmask value.\n");
return -1;
}
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}
} else
gateway.s_addr = INADDR_ANY;
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OsSetRoute(RTM_DELETE, dest, gateway, netmask);
} else
return -1;
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return 0;
}
static int AliasEnable();
static int AliasOption();
static struct cmdtab const AliasCommands[] =
{
{ "enable", NULL, AliasEnable, LOCAL_AUTH,
"enable IP aliasing", "alias enable [yes|no]"},
{ "port", NULL, AliasRedirectPort, LOCAL_AUTH,
"port redirection", "alias port [proto addr_local:port_local port_alias]"},
{ "addr", NULL, AliasRedirectAddr, LOCAL_AUTH,
"static address translation", "alias addr [addr_local addr_alias]"},
{ "deny_incoming", NULL, AliasOption, LOCAL_AUTH,
"stop incoming connections", "alias deny_incoming [yes|no]",
(void*)PKT_ALIAS_DENY_INCOMING},
{ "log", NULL, AliasOption, LOCAL_AUTH,
"log aliasing link creation", "alias log [yes|no]",
(void*)PKT_ALIAS_LOG},
{ "same_ports", NULL, AliasOption, LOCAL_AUTH,
"try to leave port numbers unchanged", "alias same_ports [yes|no]",
(void*)PKT_ALIAS_SAME_PORTS},
{ "use_sockets", NULL, AliasOption, LOCAL_AUTH,
"allocate host sockets", "alias use_sockets [yes|no]",
(void*)PKT_ALIAS_USE_SOCKETS },
{ "unregistered_only", NULL, AliasOption, LOCAL_AUTH,
"alias unregistered (private) IP address space only",
"alias unregistered_only [yes|no]",
(void*)PKT_ALIAS_UNREGISTERED_ONLY},
{ "help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH,
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"Display this message", "alias help|? [command]",
(void *)AliasCommands},
{ NULL, NULL, NULL },
};
static int
AliasCommand(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc > 0)
FindExec(AliasCommands, argc, argv);
else if (VarTerm)
fprintf(VarTerm, "Use `alias help' to get a list or `alias help <option>'"
" for syntax help.\n");
else
LogPrintf(LogWARN, "alias command must have arguments\n");
return 0;
}
static int
AliasEnable(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc == 1)
if (strcasecmp(argv[0], "yes") == 0) {
if (!(mode & MODE_ALIAS)) {
if (loadAliasHandlers(&VarAliasHandlers) == 0) {
mode |= MODE_ALIAS;
return 0;
}
LogPrintf(LogWARN, "Cannot load alias library\n");
return 1;
}
return 0;
} else if (strcasecmp(argv[0], "no") == 0) {
if (mode & MODE_ALIAS) {
unloadAliasHandlers();
mode &= ~MODE_ALIAS;
}
return 0;
}
return -1;
}
static int
AliasOption(list, argc, argv, param)
struct cmdtab *list;
int argc;
char **argv;
void* param;
{
if (argc == 1)
if (strcasecmp(argv[0], "yes") == 0) {
if (mode & MODE_ALIAS) {
VarSetPacketAliasMode((unsigned)param, (unsigned)param);
return 0;
}
LogPrintf(LogWARN, "alias not enabled\n");
} else if (strcmp(argv[0], "no") == 0) {
if (mode & MODE_ALIAS) {
VarSetPacketAliasMode(0, (unsigned)param);
return 0;
}
LogPrintf(LogWARN, "alias not enabled\n");
}
return -1;
}