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freebsd/usr.sbin/ppp/command.c
Brian Somers 5a76e22406 Reset our "ifaddr" to zero if the "set ifaddr" fails in 
-auto mode.  This makes ppp correctly exit if you kick it
off twice in auto mode with the same label (read: interface).
1997-12-19 18:11:05 +00:00

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/*
* 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.
*
* $Id: command.c,v 1.114 1997/12/18 01:10:13 brian Exp $
*
*/
#include <sys/param.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <net/route.h>
#include <netdb.h>
#ifndef NOALIAS
#include <alias.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include "command.h"
#include "mbuf.h"
#include "log.h"
#include "defs.h"
#include "timer.h"
#include "fsm.h"
#include "phase.h"
#include "lcp.h"
#include "iplist.h"
#include "ipcp.h"
#include "modem.h"
#include "filter.h"
#ifndef NOALIAS
#include "alias_cmd.h"
#endif
#include "hdlc.h"
#include "loadalias.h"
#include "vars.h"
#include "systems.h"
#include "chat.h"
#include "os.h"
#include "server.h"
#include "main.h"
#include "route.h"
#include "ccp.h"
#include "ip.h"
#include "slcompress.h"
#include "auth.h"
struct in_addr ifnetmask;
static const char *HIDDEN = "********";
static int ShowCommand(struct cmdargs const *arg);
static int TerminalCommand(struct cmdargs const *arg);
static int QuitCommand(struct cmdargs const *arg);
static int CloseCommand(struct cmdargs const *arg);
static int DialCommand(struct cmdargs const *arg);
static int DownCommand(struct cmdargs const *arg);
static int AllowCommand(struct cmdargs const *arg);
static int SetCommand(struct cmdargs const *arg);
static int AddCommand(struct cmdargs const *arg);
static int DeleteCommand(struct cmdargs const *arg);
static int BgShellCommand(struct cmdargs const *arg);
static int FgShellCommand(struct cmdargs const *arg);
#ifndef NOALIAS
static int AliasCommand(struct cmdargs const *arg);
static int AliasEnable(struct cmdargs const *arg);
static int AliasOption(struct cmdargs const *arg);
#endif
static int
HelpCommand(struct cmdargs const *arg)
{
struct cmdtab const *cmd;
int n, cmax, dmax, cols;
if (!VarTerm)
return 0;
if (arg->argc > 0) {
for (cmd = arg->cmd; cmd->name; cmd++)
if (strcasecmp(cmd->name, *arg->argv) == 0 &&
(cmd->lauth & VarLocalAuth)) {
fprintf(VarTerm, "%s\n", cmd->syntax);
return 0;
}
return -1;
}
cmax = dmax = 0;
for (cmd = arg->cmd; cmd->func; cmd++)
if (cmd->name && (cmd->lauth & VarLocalAuth)) {
if ((n = strlen(cmd->name)) > cmax)
cmax = n;
if ((n = strlen(cmd->helpmes)) > dmax)
dmax = n;
}
cols = 80 / (dmax + cmax + 3);
n = 0;
for (cmd = arg->cmd; cmd->func; cmd++)
if (cmd->name && (cmd->lauth & VarLocalAuth)) {
fprintf(VarTerm, " %-*.*s: %-*.*s",
cmax, cmax, cmd->name, dmax, dmax, cmd->helpmes);
if (++n % cols == 0)
fprintf(VarTerm, "\n");
}
if (n % cols != 0)
fprintf(VarTerm, "\n");
return 0;
}
int
IsInteractive(int Display)
{
const 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.";
else if (mode & MODE_DIRECT)
mes = "Working in direct mode.";
else if (mode & MODE_DEDICATED)
mes = "Working in dedicated mode.";
if (mes) {
if (Display && VarTerm)
fprintf(VarTerm, "%s\n", mes);
return 0;
}
return 1;
}
static int
DialCommand(struct cmdargs const *arg)
{
int tries;
int res;
if (LcpFsm.state > ST_CLOSED) {
if (VarTerm)
fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
return 0;
}
if (arg->argc > 0 && (res = LoadCommand(arg)) != 0)
return res;
tries = 0;
do {
if (VarTerm)
fprintf(VarTerm, "Dial attempt %u of %d\n", ++tries, VarDialTries);
if (OpenModem() < 0) {
if (VarTerm)
fprintf(VarTerm, "Failed to open modem.\n");
break;
}
if ((res = DialModem()) == EX_DONE) {
nointr_sleep(1);
ModemTimeout(NULL);
PacketMode();
break;
} else if (res == EX_SIG)
return 1;
} while (VarDialTries == 0 || tries < VarDialTries);
return 0;
}
static int
SetLoopback(struct cmdargs const *arg)
{
if (arg->argc == 1)
if (!strcasecmp(*arg->argv, "on")) {
VarLoopback = 1;
return 0;
}
else if (!strcasecmp(*arg->argv, "off")) {
VarLoopback = 0;
return 0;
}
return -1;
}
static int
ShellCommand(struct cmdargs const *arg, int bg)
{
const char *shell;
pid_t shpid;
FILE *oVarTerm;
int argc;
char *argv[MAXARGS];
#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 (VarTerm && !(mode & MODE_INTER)) {
LogPrintf(LogWARN, "Shell is not allowed interactively in auto mode\n");
return 1;
}
#endif
if (arg->argc == 0)
if (!(mode & MODE_INTER)) {
if (VarTerm)
LogPrintf(LogWARN, "Can't start an interactive shell from"
" a telnet session\n");
else
LogPrintf(LogWARN, "Can only start an interactive shell in"
" interactive mode\n");
return 1;
} else if (bg) {
LogPrintf(LogWARN, "Can only start an interactive shell in"
" the foreground 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);
for (dtablesize = getdtablesize(), i = 3; i < dtablesize; i++)
close(i);
TtyOldMode();
setuid(geteuid());
if (arg->argc > 0) {
/* substitute pseudo args */
argv[0] = strdup(arg->argv[0]);
for (argc = 1; argc < arg->argc; argc++) {
if (strcasecmp(arg->argv[argc], "HISADDR") == 0)
argv[argc] = strdup(inet_ntoa(IpcpInfo.his_ipaddr));
else if (strcasecmp(arg->argv[argc], "INTERFACE") == 0)
argv[argc] = strdup(IfDevName);
else if (strcasecmp(arg->argv[argc], "MYADDR") == 0)
argv[argc] = strdup(inet_ntoa(IpcpInfo.want_ipaddr));
else
argv[argc] = strdup(arg->argv[argc]);
}
argv[argc] = NULL;
if (bg) {
pid_t p;
p = getpid();
if (daemon(1, 1) == -1) {
LogPrintf(LogERROR, "%d: daemon: %s\n", p, strerror(errno));
exit(1);
}
} else if (VarTerm)
fprintf(VarTerm, "ppp: Pausing until %s finishes\n", arg->argv[0]);
execvp(argv[0], argv);
} else {
if (VarTerm)
fprintf(VarTerm, "ppp: Pausing until %s finishes\n", shell);
execl(shell, shell, NULL);
}
LogPrintf(LogWARN, "exec() of %s failed\n", arg->argc > 0 ? arg->argv[0] : shell);
exit(255);
}
if (shpid == (pid_t) - 1) {
LogPrintf(LogERROR, "Fork failed: %s\n", strerror(errno));
} else {
int status;
waitpid(shpid, &status, 0);
}
TtyCommandMode(1);
return (0);
}
static int
BgShellCommand(struct cmdargs const *arg)
{
if (arg->argc == 0)
return -1;
return ShellCommand(arg, 1);
}
static int
FgShellCommand(struct cmdargs const *arg)
{
return ShellCommand(arg, 0);
}
static 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"},
{"allow", "auth", AllowCommand, LOCAL_AUTH,
"Allow ppp access", "allow users|modes ...."},
{"bg", "!bg", BgShellCommand, LOCAL_AUTH,
"Run a background command", "[!]bg command"},
{"close", NULL, CloseCommand, LOCAL_AUTH,
"Close connection", "close"},
{"delete", NULL, DeleteCommand, LOCAL_AUTH,
"delete route", "delete dest"},
{"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 LocalPassword"},
{"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", "!", FgShellCommand, LOCAL_AUTH,
"Run a subshell", "shell|! [sh command]"},
{"show", NULL, ShowCommand, LOCAL_AUTH,
"Show status and stats", "show var"},
{"term", NULL, TerminalCommand, LOCAL_AUTH,
"Enter terminal mode", "term"},
#ifndef NOALIAS
{"alias", NULL, AliasCommand, LOCAL_AUTH,
"alias control", "alias option [yes|no]"},
#endif
{"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]", Commands},
{NULL, "down", DownCommand, LOCAL_AUTH,
"Generate down event", "down"},
{NULL, NULL, NULL},
};
static int
ShowLoopback(struct cmdargs const *arg)
{
if (VarTerm)
fprintf(VarTerm, "Local loopback is %s\n", VarLoopback ? "on" : "off");
return 0;
}
static int
ShowLogLevel(struct cmdargs const *arg)
{
int i;
if (!VarTerm)
return 0;
fprintf(VarTerm, "Log: ");
for (i = LogMIN; i <= LogMAX; i++)
if (LogIsKept(i) & LOG_KEPT_SYSLOG)
fprintf(VarTerm, " %s", LogName(i));
fprintf(VarTerm, "\nLocal:");
for (i = LogMIN; i <= LogMAX; i++)
if (LogIsKept(i) & LOG_KEPT_LOCAL)
fprintf(VarTerm, " %s", LogName(i));
fprintf(VarTerm, "\n");
return 0;
}
static int
ShowEscape(struct cmdargs const *arg)
{
int code, bit;
if (!VarTerm)
return 0;
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");
}
return 0;
}
static int
ShowTimeout(struct cmdargs const *arg)
{
if (VarTerm)
fprintf(VarTerm, " Idle Timer: %d secs LQR Timer: %d secs"
" Retry Timer: %d secs\n", VarIdleTimeout, VarLqrTimeout,
VarRetryTimeout);
return 0;
}
static int
ShowStopped(struct cmdargs const *arg)
{
if (!VarTerm)
return 0;
fprintf(VarTerm, " Stopped Timer: LCP: ");
if (!LcpFsm.StoppedTimer.load)
fprintf(VarTerm, "Disabled");
else
fprintf(VarTerm, "%ld secs", LcpFsm.StoppedTimer.load / SECTICKS);
fprintf(VarTerm, ", IPCP: ");
if (!IpcpFsm.StoppedTimer.load)
fprintf(VarTerm, "Disabled");
else
fprintf(VarTerm, "%ld secs", IpcpFsm.StoppedTimer.load / SECTICKS);
fprintf(VarTerm, ", CCP: ");
if (!CcpFsm.StoppedTimer.load)
fprintf(VarTerm, "Disabled");
else
fprintf(VarTerm, "%ld secs", CcpFsm.StoppedTimer.load / SECTICKS);
fprintf(VarTerm, "\n");
return 0;
}
static int
ShowAuthKey(struct cmdargs const *arg)
{
if (!VarTerm)
return 0;
fprintf(VarTerm, "AuthName = %s\n", VarAuthName);
fprintf(VarTerm, "AuthKey = %s\n", HIDDEN);
#ifdef HAVE_DES
fprintf(VarTerm, "Encrypt = %s\n", VarMSChap ? "MSChap" : "MD5" );
#endif
return 0;
}
static int
ShowVersion(struct cmdargs const *arg)
{
if (VarTerm)
fprintf(VarTerm, "%s - %s \n", VarVersion, VarLocalVersion);
return 0;
}
static int
ShowInitialMRU(struct cmdargs const *arg)
{
if (VarTerm)
fprintf(VarTerm, " Initial MRU: %ld\n", VarMRU);
return 0;
}
static int
ShowPreferredMTU(struct cmdargs const *arg)
{
if (VarTerm)
if (VarPrefMTU)
fprintf(VarTerm, " Preferred MTU: %ld\n", VarPrefMTU);
else
fprintf(VarTerm, " Preferred MTU: unspecified\n");
return 0;
}
static int
ShowReconnect(struct cmdargs const *arg)
{
if (VarTerm)
fprintf(VarTerm, " Reconnect Timer: %d, %d tries\n",
VarReconnectTimer, VarReconnectTries);
return 0;
}
static int
ShowRedial(struct cmdargs const *arg)
{
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 0;
}
#ifndef NOMSEXT
static int
ShowMSExt(struct cmdargs const *arg)
{
if (VarTerm) {
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 0;
}
#endif
static struct cmdtab const ShowCommands[] = {
{"afilter", NULL, ShowAfilter, LOCAL_AUTH,
"Show keep-alive filters", "show afilter option .."},
{"auth", NULL, ShowAuthKey, LOCAL_AUTH,
"Show auth details", "show auth"},
{"ccp", NULL, ReportCcpStatus, LOCAL_AUTH,
"Show CCP status", "show cpp"},
{"compress", NULL, ReportCompress, LOCAL_AUTH,
"Show compression stats", "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 errors", "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"},
{"loopback", NULL, ShowLoopback, LOCAL_AUTH,
"Show loopback setting", "show loopback"},
{"log", NULL, ShowLogLevel, LOCAL_AUTH,
"Show log levels", "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", "show reconnect"},
{"redial", NULL, ShowRedial, LOCAL_AUTH,
"Show Redial timeout", "show redial"},
{"route", NULL, ShowRoute, LOCAL_AUTH,
"Show routing table", "show route"},
{"timeout", NULL, ShowTimeout, LOCAL_AUTH,
"Show Idle timeout", "show timeout"},
{"stopped", NULL, ShowStopped, LOCAL_AUTH,
"Show STOPPED timeout", "show stopped"},
#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,
"Display this message", "show help|? [command]", ShowCommands},
{NULL, NULL, NULL},
};
static struct cmdtab const *
FindCommand(struct cmdtab const *cmds, const char *str, int *pmatch)
{
int nmatch;
int len;
struct cmdtab const *found;
found = NULL;
len = strlen(str);
nmatch = 0;
while (cmds->func) {
if (cmds->name && strncasecmp(str, cmds->name, len) == 0) {
if (cmds->name[len] == '\0') {
*pmatch = 1;
return cmds;
}
nmatch++;
found = cmds;
} else if (cmds->alias && strncasecmp(str, cmds->alias, len) == 0) {
if (cmds->alias[len] == '\0') {
*pmatch = 1;
return cmds;
}
nmatch++;
found = cmds;
}
cmds++;
}
*pmatch = nmatch;
return found;
}
static int
FindExec(struct cmdtab const *cmds, int argc, char const *const *argv,
const char *prefix)
{
struct cmdtab const *cmd;
int val = 1;
int nmatch;
struct cmdargs arg;
cmd = FindCommand(cmds, *argv, &nmatch);
if (nmatch > 1)
LogPrintf(LogWARN, "%s%s: Ambiguous command\n", prefix, *argv);
else if (cmd && (cmd->lauth & VarLocalAuth)) {
arg.cmd = cmds;
arg.argc = argc-1;
arg.argv = argv+1;
arg.data = cmd->args;
val = (cmd->func) (&arg);
} else
LogPrintf(LogWARN, "%s%s: Invalid command\n", prefix, *argv);
if (val == -1)
LogPrintf(LogWARN, "Usage: %s\n", cmd->syntax);
else if (val)
LogPrintf(LogWARN, "%s%s: Failed %d\n", prefix, *argv, val);
return val;
}
int aft_cmd = 1;
void
Prompt()
{
const char *pconnect, *pauth;
if (!VarTerm || TermMode)
return;
if (!aft_cmd)
fprintf(VarTerm, "\n");
else
aft_cmd = 0;
if (VarLocalAuth == LOCAL_AUTH)
pauth = " ON ";
else
pauth = " on ";
if (IpcpFsm.state == ST_OPENED && phase == PHASE_NETWORK)
pconnect = "PPP";
else
pconnect = "ppp";
fprintf(VarTerm, "%s%s%s> ", pconnect, pauth, VarShortHost);
fflush(VarTerm);
}
void
InterpretCommand(char *buff, int nb, int *argc, char ***argv)
{
static char *vector[MAXARGS];
char *cp;
if (nb > 0) {
cp = buff + strcspn(buff, "\r\n");
if (cp)
*cp = '\0';
*argc = MakeArgs(buff, vector, VECSIZE(vector));
*argv = vector;
} else
*argc = 0;
}
static int
arghidden(int argc, char const *const *argv, int n)
{
/* Is arg n of the given command to be hidden from the log ? */
/* set authkey xxxxx */
/* set key xxxxx */
if (n == 2 && !strncasecmp(argv[0], "se", 2) &&
(!strncasecmp(argv[1], "authk", 5) || !strncasecmp(argv[1], "ke", 2)))
return 1;
/* passwd xxxxx */
if (n == 1 && !strncasecmp(argv[0], "p", 1))
return 1;
return 0;
}
void
RunCommand(int argc, char const *const *argv, const char *label)
{
if (argc > 0) {
if (LogIsKept(LogCOMMAND)) {
static char buf[LINE_LEN];
int f, n;
*buf = '\0';
if (label) {
strncpy(buf, label, sizeof buf);
buf[sizeof(buf)-3] = '\0';
strcat(buf, ": ");
}
n = strlen(buf);
for (f = 0; f < argc; f++) {
if (n < sizeof(buf)-1 && f)
buf[n++] = ' ';
if (arghidden(argc, argv, f))
strncpy(buf+n, HIDDEN, sizeof(buf)-n-1);
else
strncpy(buf+n, argv[f], sizeof(buf)-n-1);
n += strlen(buf+n);
}
LogPrintf(LogCOMMAND, "%s\n", buf);
}
FindExec(Commands, argc, argv, "");
}
}
void
DecodeCommand(char *buff, int nb, const char *label)
{
int argc;
char **argv;
InterpretCommand(buff, nb, &argc, &argv);
RunCommand(argc, (char const *const *)argv, label);
}
static int
ShowCommand(struct cmdargs const *arg)
{
if (arg->argc > 0)
FindExec(ShowCommands, arg->argc, arg->argv, "show ");
else if (VarTerm)
fprintf(VarTerm, "Use ``show ?'' to get a arg->cmd.\n");
else
LogPrintf(LogWARN, "show command must have arguments\n");
return 0;
}
static int
TerminalCommand(struct cmdargs const *arg)
{
if (LcpFsm.state > ST_CLOSED) {
if (VarTerm)
fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
return 1;
}
if (!IsInteractive(1))
return (1);
if (OpenModem() < 0) {
if (VarTerm)
fprintf(VarTerm, "Failed to open modem.\n");
return (1);
}
if (VarTerm) {
fprintf(VarTerm, "Enter to terminal mode.\n");
fprintf(VarTerm, "Type `~?' for help.\n");
}
TtyTermMode();
return (0);
}
static int
QuitCommand(struct cmdargs const *arg)
{
if (VarTerm) {
DropClient();
if (mode & MODE_INTER)
Cleanup(EX_NORMAL);
else if (arg->argc > 0 && !strcasecmp(*arg->argv, "all") && VarLocalAuth&LOCAL_AUTH)
Cleanup(EX_NORMAL);
}
return 0;
}
static int
CloseCommand(struct cmdargs const *arg)
{
reconnect(RECON_FALSE);
LcpClose();
return 0;
}
static int
DownCommand(struct cmdargs const *arg)
{
LcpDown();
return 0;
}
static int
SetModemSpeed(struct cmdargs const *arg)
{
int speed;
if (arg->argc > 0) {
if (strcasecmp(*arg->argv, "sync") == 0) {
VarSpeed = 0;
return 0;
}
speed = atoi(*arg->argv);
if (IntToSpeed(speed) != B0) {
VarSpeed = speed;
return 0;
}
LogPrintf(LogWARN, "%s: Invalid speed\n", *arg->argv);
}
return -1;
}
static int
SetReconnect(struct cmdargs const *arg)
{
if (arg->argc == 2) {
VarReconnectTimer = atoi(arg->argv[0]);
VarReconnectTries = atoi(arg->argv[1]);
return 0;
}
return -1;
}
static int
SetRedialTimeout(struct cmdargs const *arg)
{
int timeout;
int tries;
char *dot;
if (arg->argc == 1 || arg->argc == 2) {
if (strncasecmp(arg->argv[0], "random", 6) == 0 &&
(arg->argv[0][6] == '\0' || arg->argv[0][6] == '.')) {
VarRedialTimeout = -1;
randinit();
} else {
timeout = atoi(arg->argv[0]);
if (timeout >= 0)
VarRedialTimeout = timeout;
else {
LogPrintf(LogWARN, "Invalid redial timeout\n");
return -1;
}
}
dot = strchr(arg->argv[0], '.');
if (dot) {
if (strcasecmp(++dot, "random") == 0) {
VarRedialNextTimeout = -1;
randinit();
} 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 (arg->argc == 2) {
tries = atoi(arg->argv[1]);
if (tries >= 0) {
VarDialTries = tries;
} else {
LogPrintf(LogWARN, "Invalid retry value\n");
return 1;
}
}
return 0;
}
return -1;
}
static int
SetStoppedTimeout(struct cmdargs const *arg)
{
LcpFsm.StoppedTimer.load = 0;
IpcpFsm.StoppedTimer.load = 0;
CcpFsm.StoppedTimer.load = 0;
if (arg->argc <= 3) {
if (arg->argc > 0) {
LcpFsm.StoppedTimer.load = atoi(arg->argv[0]) * SECTICKS;
if (arg->argc > 1) {
IpcpFsm.StoppedTimer.load = atoi(arg->argv[1]) * SECTICKS;
if (arg->argc > 2)
CcpFsm.StoppedTimer.load = atoi(arg->argv[2]) * SECTICKS;
}
}
return 0;
}
return -1;
}
#define ismask(x) \
(*x == '0' && strlen(x) == 4 && strspn(x+1, "0123456789.") == 3)
static int
SetServer(struct cmdargs const *arg)
{
int res = -1;
if (arg->argc > 0 && arg->argc < 4) {
const char *port, *passwd, *mask;
/* What's what ? */
port = arg->argv[0];
if (arg->argc == 2)
if (ismask(arg->argv[1])) {
passwd = NULL;
mask = arg->argv[1];
} else {
passwd = arg->argv[1];
mask = NULL;
}
else if (arg->argc == 3) {
passwd = arg->argv[1];
mask = arg->argv[2];
if (!ismask(mask))
return -1;
} else
passwd = mask = NULL;
if (passwd == NULL)
VarHaveLocalAuthKey = 0;
else {
strncpy(VarLocalAuthKey, passwd, sizeof VarLocalAuthKey);
VarLocalAuthKey[sizeof VarLocalAuthKey - 1] = '\0';
VarHaveLocalAuthKey = 1;
}
LocalAuthInit();
if (strcasecmp(port, "none") == 0) {
int oserver;
if (mask != NULL || passwd != NULL)
return -1;
oserver = server;
ServerClose();
if (oserver != -1)
LogPrintf(LogPHASE, "Disabling server port.\n");
res = 0;
} else if (*port == '/') {
mode_t imask;
if (mask != NULL) {
unsigned m;
if (sscanf(mask, "%o", &m) == 1)
imask = m;
else
return -1;
} else
imask = (mode_t)-1;
res = ServerLocalOpen(port, imask);
} else {
int iport;
if (mask != NULL)
return -1;
if (strspn(port, "0123456789") != strlen(port)) {
struct servent *s;
if ((s = getservbyname(port, "tcp")) == NULL) {
iport = 0;
LogPrintf(LogWARN, "%s: Invalid port or service\n", port);
} else
iport = ntohs(s->s_port);
} else
iport = atoi(port);
res = iport ? ServerTcpOpen(iport) : -1;
}
}
return res;
}
static int
SetModemParity(struct cmdargs const *arg)
{
return arg->argc > 0 ? ChangeParity(*arg->argv) : -1;
}
static int
SetLogLevel(struct cmdargs const *arg)
{
int i;
int res;
int argc;
char const *const *argv, *argp;
void (*Discard)(int), (*Keep)(int);
void (*DiscardAll)(void);
argc = arg->argc;
argv = arg->argv;
res = 0;
if (argc == 0 || strcasecmp(argv[0], "local")) {
Discard = LogDiscard;
Keep = LogKeep;
DiscardAll = LogDiscardAll;
} else {
argc--;
argv++;
Discard = LogDiscardLocal;
Keep = LogKeepLocal;
DiscardAll = LogDiscardAllLocal;
}
if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-'))
DiscardAll();
while (argc--) {
argp = **argv == '+' || **argv == '-' ? *argv + 1 : *argv;
for (i = LogMIN; i <= LogMAX; i++)
if (strcasecmp(argp, LogName(i)) == 0) {
if (**argv == '-')
(*Discard)(i);
else
(*Keep)(i);
break;
}
if (i > LogMAX) {
LogPrintf(LogWARN, "%s: Invalid log value\n", argp);
res = -1;
}
argv++;
}
return res;
}
static int
SetEscape(struct cmdargs const *arg)
{
int code;
int argc = arg->argc;
char const *const *argv = arg->argv;
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;
}
static int
SetInitialMRU(struct cmdargs const *arg)
{
long mru;
const char *err;
if (arg->argc > 0) {
mru = atol(*arg->argv);
if (mru < MIN_MRU)
err = "Given MRU value (%ld) is too small.\n";
else if (mru > MAX_MRU)
err = "Given MRU value (%ld) is too big.\n";
else {
VarMRU = mru;
return 0;
}
LogPrintf(LogWARN, err, mru);
}
return -1;
}
static int
SetPreferredMTU(struct cmdargs const *arg)
{
long mtu;
const char *err;
if (arg->argc > 0) {
mtu = atol(*arg->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;
}
static int
SetIdleTimeout(struct cmdargs const *arg)
{
if (arg->argc > 0) {
VarIdleTimeout = atoi(arg->argv[0]);
UpdateIdleTimer(); /* If we're connected, restart the idle timer */
if (arg->argc > 1) {
VarLqrTimeout = atoi(arg->argv[1]);
if (VarLqrTimeout < 1)
VarLqrTimeout = 30;
if (arg->argc > 2) {
VarRetryTimeout = atoi(arg->argv[2]);
if (VarRetryTimeout < 1 || VarRetryTimeout > 10)
VarRetryTimeout = 3;
}
}
return 0;
}
return -1;
}
static struct in_addr
GetIpAddr(const char *cp)
{
struct hostent *hp;
struct in_addr ipaddr;
hp = gethostbyname(cp);
if (hp && hp->h_addrtype == AF_INET)
memcpy(&ipaddr, hp->h_addr, hp->h_length);
else if (inet_aton(cp, &ipaddr) == 0)
ipaddr.s_addr = 0;
return (ipaddr);
}
static int
SetInterfaceAddr(struct cmdargs const *arg)
{
DefMyAddress.ipaddr.s_addr = DefHisAddress.ipaddr.s_addr = 0L;
if (arg->argc > 4)
return -1;
HaveTriggerAddress = 0;
ifnetmask.s_addr = 0;
iplist_reset(&DefHisChoice);
if (arg->argc > 0) {
if (!ParseAddr(arg->argc, arg->argv, &DefMyAddress.ipaddr,
&DefMyAddress.mask, &DefMyAddress.width))
return 1;
if (arg->argc > 1) {
if (strpbrk(arg->argv[1], ",-"))
iplist_setsrc(&DefHisChoice, arg->argv[1]);
else if (!ParseAddr(arg->argc, arg->argv+1, &DefHisAddress.ipaddr,
&DefHisAddress.mask, &DefHisAddress.width))
return 2;
if (arg->argc > 2) {
ifnetmask = GetIpAddr(arg->argv[2]);
if (arg->argc > 3) {
TriggerAddress = GetIpAddr(arg->argv[3]);
HaveTriggerAddress = 1;
}
}
}
}
/*
* 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;
}
IpcpInfo.want_ipaddr.s_addr = DefMyAddress.ipaddr.s_addr;
if (iplist_isvalid(&DefHisChoice)) {
iplist_setrandpos(&DefHisChoice);
IpcpInfo.his_ipaddr = ChooseHisAddr(IpcpInfo.want_ipaddr);
if (IpcpInfo.his_ipaddr.s_addr == INADDR_ANY) {
LogPrintf(LogWARN, "%s: None available !\n", DefHisChoice.src);
return 3;
}
DefHisAddress.ipaddr.s_addr = IpcpInfo.his_ipaddr.s_addr;
DefHisAddress.mask.s_addr = 0xffffffff;
DefHisAddress.width = 32;
} else {
IpcpInfo.his_ipaddr.s_addr = DefHisAddress.ipaddr.s_addr;
if ((mode & MODE_AUTO) &&
OsSetIpaddress(DefMyAddress.ipaddr, DefHisAddress.ipaddr) < 0) {
DefMyAddress.ipaddr.s_addr = DefHisAddress.ipaddr.s_addr = 0L;
return 4;
}
}
return 0;
}
#ifndef NOMSEXT
static void
SetMSEXT(struct in_addr * pri_addr,
struct in_addr * sec_addr,
int argc,
char const *const *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(struct cmdargs const *arg)
{
SetMSEXT(&ns_entries[0], &ns_entries[1], arg->argc, arg->argv);
return 0;
}
static int
SetNBNS(struct cmdargs const *arg)
{
SetMSEXT(&nbns_entries[0], &nbns_entries[1], arg->argc, arg->argv);
return 0;
}
#endif /* MS_EXT */
int
SetVariable(struct cmdargs const *arg)
{
u_long map;
const char *argp;
int param = (int)arg->data;
if (arg->argc > 0)
argp = *arg->argv;
else
argp = "";
switch (param) {
case VAR_AUTHKEY:
strncpy(VarAuthKey, argp, sizeof(VarAuthKey) - 1);
VarAuthKey[sizeof(VarAuthKey) - 1] = '\0';
break;
case VAR_AUTHNAME:
strncpy(VarAuthName, argp, sizeof(VarAuthName) - 1);
VarAuthName[sizeof(VarAuthName) - 1] = '\0';
break;
case VAR_DIAL:
strncpy(VarDialScript, argp, sizeof(VarDialScript) - 1);
VarDialScript[sizeof(VarDialScript) - 1] = '\0';
break;
case VAR_LOGIN:
strncpy(VarLoginScript, argp, sizeof(VarLoginScript) - 1);
VarLoginScript[sizeof(VarLoginScript) - 1] = '\0';
break;
case VAR_DEVICE:
if (modem != -1)
LogPrintf(LogWARN, "Cannot change device to \"%s\" when \"%s\" is open\n",
argp, VarDevice);
else {
strncpy(VarDevice, argp, sizeof(VarDevice) - 1);
VarDevice[sizeof(VarDevice) - 1] = '\0';
VarBaseDevice = strrchr(VarDevice, '/');
VarBaseDevice = VarBaseDevice ? VarBaseDevice + 1 : "";
}
break;
case VAR_ACCMAP:
sscanf(argp, "%lx", &map);
VarAccmap = map;
break;
case VAR_PHONE:
strncpy(VarPhoneList, argp, sizeof(VarPhoneList) - 1);
VarPhoneList[sizeof(VarPhoneList) - 1] = '\0';
strncpy(VarPhoneCopy, VarPhoneList, sizeof(VarPhoneCopy));
VarPhoneCopy[sizeof(VarPhoneCopy) - 1] = '\0';
VarNextPhone = VarPhoneCopy;
VarAltPhone = NULL;
break;
case VAR_HANGUP:
strncpy(VarHangupScript, argp, sizeof(VarHangupScript) - 1);
VarHangupScript[sizeof(VarHangupScript) - 1] = '\0';
break;
#ifdef HAVE_DES
case VAR_ENC:
VarMSChap = !strcasecmp(argp, "mschap");
break;
#endif
}
return 0;
}
static int
SetCtsRts(struct cmdargs const *arg)
{
if (arg->argc > 0) {
if (strcmp(*arg->argv, "on") == 0)
VarCtsRts = 1;
else if (strcmp(*arg->argv, "off") == 0)
VarCtsRts = 0;
else
return -1;
return 0;
}
return -1;
}
static int
SetOpenMode(struct cmdargs const *arg)
{
if (arg->argc > 0) {
if (strcmp(*arg->argv, "active") == 0)
VarOpenMode = OPEN_ACTIVE;
else if (strcmp(*arg->argv, "passive") == 0)
VarOpenMode = OPEN_PASSIVE;
else
return -1;
return 0;
}
return -1;
}
static struct cmdtab const SetCommands[] = {
{"accmap", NULL, SetVariable, LOCAL_AUTH,
"Set accmap value", "set accmap hex-value", (const 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", (const void *) VAR_AUTHKEY},
{"authname", NULL, SetVariable, LOCAL_AUTH,
"Set authentication name", "set authname name", (const 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", (const 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", (const void *) VAR_DIAL},
#ifdef HAVE_DES
{"encrypt", NULL, SetVariable, LOCAL_AUTH, "Set CHAP encryption algorithm",
"set encrypt MSChap|MD5", (const void *) VAR_ENC},
#endif
{"escape", NULL, SetEscape, LOCAL_AUTH,
"Set escape characters", "set escape hex-digit ..."},
{"hangup", NULL, SetVariable, LOCAL_AUTH,
"Set hangup script", "set hangup chat-script", (const 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 ..."},
{"loopback", NULL, SetLoopback, LOCAL_AUTH,
"Set loopback facility", "set loopback on|off"},
{"log", NULL, SetLogLevel, LOCAL_AUTH,
"Set log level", "set log [local] [+|-]value..."},
{"login", NULL, SetVariable, LOCAL_AUTH,
"Set login script", "set login chat-script", (const 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[...]]", (const 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]"},
{"stopped", NULL, SetStoppedTimeout, LOCAL_AUTH, "Set STOPPED timeouts",
"set stopped [LCPseconds [IPCPseconds [CCPseconds]]]"},
{"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,
"Display this message", "set help|? [command]", SetCommands},
{NULL, NULL, NULL},
};
static int
SetCommand(struct cmdargs const *arg)
{
if (arg->argc > 0)
FindExec(SetCommands, arg->argc, arg->argv, "set ");
else if (VarTerm)
fprintf(VarTerm, "Use `set ?' to get a arg->cmd or `set ? <var>' for"
" syntax help.\n");
else
LogPrintf(LogWARN, "set command must have arguments\n");
return 0;
}
static int
AddCommand(struct cmdargs const *arg)
{
struct in_addr dest, gateway, netmask;
int gw;
if (arg->argc != 3 && arg->argc != 2)
return -1;
if (arg->argc == 2)
if (strcasecmp(arg->argv[0], "default"))
return -1;
else {
dest.s_addr = netmask.s_addr = INADDR_ANY;
gw = 1;
}
else {
if (strcasecmp(arg->argv[0], "MYADDR") == 0)
dest = IpcpInfo.want_ipaddr;
else
dest = GetIpAddr(arg->argv[0]);
netmask = GetIpAddr(arg->argv[1]);
gw = 2;
}
if (strcasecmp(arg->argv[gw], "HISADDR") == 0)
gateway = IpcpInfo.his_ipaddr;
else if (strcasecmp(arg->argv[gw], "INTERFACE") == 0)
gateway.s_addr = INADDR_ANY;
else
gateway = GetIpAddr(arg->argv[gw]);
OsSetRoute(RTM_ADD, dest, gateway, netmask);
return 0;
}
static int
DeleteCommand(struct cmdargs const *arg)
{
struct in_addr dest, none;
if (arg->argc == 1)
if(strcasecmp(arg->argv[0], "all") == 0)
DeleteIfRoutes(0);
else {
if (strcasecmp(arg->argv[0], "MYADDR") == 0)
dest = IpcpInfo.want_ipaddr;
else if (strcasecmp(arg->argv[0], "default") == 0)
dest.s_addr = INADDR_ANY;
else
dest = GetIpAddr(arg->argv[0]);
none.s_addr = INADDR_ANY;
OsSetRoute(RTM_DELETE, dest, none, none);
}
else
return -1;
return 0;
}
#ifndef NOALIAS
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]",
(const void *) PKT_ALIAS_DENY_INCOMING},
{"log", NULL, AliasOption, LOCAL_AUTH,
"log aliasing link creation", "alias log [yes|no]",
(const void *) PKT_ALIAS_LOG},
{"same_ports", NULL, AliasOption, LOCAL_AUTH,
"try to leave port numbers unchanged", "alias same_ports [yes|no]",
(const void *) PKT_ALIAS_SAME_PORTS},
{"use_sockets", NULL, AliasOption, LOCAL_AUTH,
"allocate host sockets", "alias use_sockets [yes|no]",
(const void *) PKT_ALIAS_USE_SOCKETS},
{"unregistered_only", NULL, AliasOption, LOCAL_AUTH,
"alias unregistered (private) IP address space only",
"alias unregistered_only [yes|no]",
(const void *) PKT_ALIAS_UNREGISTERED_ONLY},
{"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH,
"Display this message", "alias help|? [command]", AliasCommands},
{NULL, NULL, NULL},
};
static int
AliasCommand(struct cmdargs const *arg)
{
if (arg->argc > 0)
FindExec(AliasCommands, arg->argc, arg->argv, "alias ");
else if (VarTerm)
fprintf(VarTerm, "Use `alias help' to get a arg->cmd or `alias help <option>'"
" for syntax help.\n");
else
LogPrintf(LogWARN, "alias command must have arguments\n");
return 0;
}
static int
AliasEnable(struct cmdargs const *arg)
{
if (arg->argc == 1)
if (strcasecmp(arg->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(arg->argv[0], "no") == 0) {
if (mode & MODE_ALIAS) {
unloadAliasHandlers();
mode &= ~MODE_ALIAS;
}
return 0;
}
return -1;
}
static int
AliasOption(struct cmdargs const *arg)
{
unsigned param = (unsigned)arg->data;
if (arg->argc == 1)
if (strcasecmp(arg->argv[0], "yes") == 0) {
if (mode & MODE_ALIAS) {
VarPacketAliasSetMode(param, param);
return 0;
}
LogPrintf(LogWARN, "alias not enabled\n");
} else if (strcmp(arg->argv[0], "no") == 0) {
if (mode & MODE_ALIAS) {
VarPacketAliasSetMode(0, param);
return 0;
}
LogPrintf(LogWARN, "alias not enabled\n");
}
return -1;
}
#endif /* #ifndef NOALIAS */
static struct cmdtab const AllowCommands[] = {
{"users", "user", AllowUsers, LOCAL_AUTH,
"Allow users access to ppp", "allow users logname..."},
{"modes", "mode", AllowModes, LOCAL_AUTH,
"Only allow certain ppp modes", "allow modes mode..."},
{"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH,
"Display this message", "allow help|? [command]", AllowCommands},
{NULL, NULL, NULL},
};
static int
AllowCommand(struct cmdargs const *arg)
{
if (arg->argc > 0)
FindExec(AllowCommands, arg->argc, arg->argv, "allow ");
else if (VarTerm)
fprintf(VarTerm, "Use `allow ?' to get a arg->cmd or `allow ? <cmd>' for"
" syntax help.\n");
else
LogPrintf(LogWARN, "allow command must have arguments\n");
return 0;
}
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