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

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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 1.79 1997/09/09 23:23:24 brian Exp $
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <termios.h>
#include <sys/wait.h>
#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>
#include "fsm.h"
#include "phase.h"
#include "lcp.h"
#include "ipcp.h"
#include "modem.h"
#include "filter.h"
#include "command.h"
#include "alias_cmd.h"
#include "hdlc.h"
#include "loadalias.h"
#include "vars.h"
#include "systems.h"
#include "chat.h"
#include "os.h"
#include "timeout.h"
#include "server.h"
extern void Cleanup(), TtyTermMode(), PacketMode();
extern int EnableCommand(), DisableCommand(), DisplayCommand();
extern int AcceptCommand(), DenyCommand();
static int AliasCommand();
extern int LocalAuthCommand();
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[];
extern char *IfDevName;
struct in_addr ifnetmask;
int randinit;
static int ShowCommand(struct cmdtab const *, int, char **);
static int TerminalCommand(struct cmdtab const *, int, char **);
static int QuitCommand(struct cmdtab const *, int, char **);
static int CloseCommand(struct cmdtab const *, int, char **);
static int DialCommand(struct cmdtab const *, int, char **);
static int DownCommand(struct cmdtab const *, int, char **);
static int SetCommand(struct cmdtab const *, int, char **);
static int AddCommand(struct cmdtab const *, int, char **);
static int DeleteCommand(struct cmdtab const *, int, char **);
static int BgShellCommand(struct cmdtab const *, int, char **);
static int FgShellCommand(struct cmdtab const *, int, char **);
static int ShellCommand(struct cmdtab const *, int, char **, int);
static int
HelpCommand(struct cmdtab const * list,
int argc,
char **argv,
struct cmdtab const * plist)
{
struct cmdtab const *cmd;
int n;
if (!VarTerm)
return 0;
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;
}
return -1;
}
n = 0;
for (cmd = plist; cmd->func; cmd++)
if (cmd->name && (cmd->lauth & VarLocalAuth)) {
fprintf(VarTerm, " %-9s: %-20s\n", cmd->name, cmd->helpmes);
n++;
}
if (n & 1)
fprintf(VarTerm, "\n");
return 0;
}
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.";
else if (mode & MODE_DIRECT)
mes = "Working in direct mode.";
else if (mode & MODE_DEDICATED)
mes = "Working in dedicated mode.";
if (mes) {
if (VarTerm)
fprintf(VarTerm, "%s\n", mes);
return 0;
}
return 1;
}
static int
DialCommand(struct cmdtab const * cmdlist, int argc, char **argv)
{
int tries;
int res;
if (LcpFsm.state > ST_CLOSED) {
if (VarTerm)
fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
return 0;
}
if (argc > 0) {
if (SelectSystem(*argv, CONFFILE) < 0) {
if (VarTerm)
fprintf(VarTerm, "%s: not found.\n", *argv);
return -1;
}
}
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;
}
static int
SetLoopback(struct cmdtab const * cmdlist, int argc, char **argv)
{
if (argc == 1)
if (!strcasecmp(*argv, "on"))
VarLoopback = 1;
else if (!strcasecmp(*argv, "off"))
VarLoopback = 0;
return -1;
}
static int
BgShellCommand(struct cmdtab const * cmdlist, int argc, char **argv)
{
if (argc == 0)
return -1;
return ShellCommand(cmdlist, argc, argv, 1);
}
static int
FgShellCommand(struct cmdtab const * cmdlist, int argc, char **argv)
{
return ShellCommand(cmdlist, argc, argv, 0);
}
static int
ShellCommand(struct cmdtab const * cmdlist, int argc, char **argv, int bg)
{
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)
if (!(mode & MODE_INTER)) {
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;
} else if (mode&(MODE_AUTO|MODE_DEDICATED|MODE_DIRECT)) {
LogPrintf(LogWARN, "Can't start an interactive shell from"
" a telnet session\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++)
(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));
if (bg) {
pid_t p;
p = getpid();
if (daemon(1, 1) == -1) {
LogPrintf(LogERROR, "%d: daemon: %s\n", p, strerror(errno));
exit(1);
}
}
(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"},
{"bg", "!bg", BgShellCommand, LOCAL_AUTH,
"Run a command in the background", "[!]bg command"},
{"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 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 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"},
{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
ShowLoopback()
{
if (VarTerm)
fprintf(VarTerm, "Local loopback is %s\n", VarLoopback ? "on" : "off");
return 0;
}
static int
ShowLogLevel()
{
int i;
if (!VarTerm)
return 0;
fprintf(VarTerm, "Log:");
for (i = LogMIN; i < LogMAXCONF; i++) {
if (LogIsKept(i))
fprintf(VarTerm, " %s", LogName(i));
}
fprintf(VarTerm, "\n");
return 0;
}
static int
ShowEscape()
{
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 1;
}
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;
}
static int
ShowStopped()
{
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 1;
}
static int
ShowAuthKey()
{
if (!VarTerm)
return 0;
fprintf(VarTerm, "AuthName = %s\n", VarAuthName);
fprintf(VarTerm, "AuthKey = %s\n", VarAuthKey);
return 1;
}
static int
ShowVersion()
{
extern char VarVersion[];
extern char VarLocalVersion[];
if (!VarTerm)
return 0;
fprintf(VarTerm, "%s - %s \n", VarVersion, VarLocalVersion);
return 1;
}
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();
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"},
{"loopback", NULL, ShowLoopback, LOCAL_AUTH,
"Show current loopback setting", "show loopback"},
{"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"},
{"stopped", NULL, ShowStopped, LOCAL_AUTH,
"Show STOPPED timeout value", "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]", (void *) ShowCommands},
{NULL, NULL, NULL},
};
struct cmdtab const *
FindCommand(struct cmdtab const * cmds, 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;
}
int
FindExec(struct cmdtab const * cmdlist, int argc, char **argv)
{
struct cmdtab const *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))
val = (cmd->func) (cmd, argc-1, argv+1, 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;
}
int aft_cmd = 1;
extern int TermMode;
void
Prompt()
{
char *pconnect, *pauth;
if (!(mode & MODE_INTER) || !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
DecodeCommand(char *buff, int nb, int prompt)
{
char *vector[20];
char **argv;
int argc;
char *cp;
if (nb > 0) {
cp = buff + strcspn(buff, "\r\n");
if (cp)
*cp = '\0';
argc = MakeArgs(buff, vector, VECSIZE(vector));
argv = vector;
if (argc > 0)
FindExec(Commands, argc, argv);
}
if (prompt)
Prompt();
}
static int
ShowCommand(struct cmdtab const * list, int argc, char **argv)
{
if (argc > 0)
FindExec(ShowCommands, argc, argv);
else if (VarTerm)
fprintf(VarTerm, "Use ``show ?'' to get a list.\n");
else
LogPrintf(LogWARN, "show command must have arguments\n");
return 0;
}
static int
TerminalCommand(struct cmdtab const * list, int argc, char **argv)
{
if (LcpFsm.state > ST_CLOSED) {
if (VarTerm)
fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]);
return 1;
}
if (!IsInteractive())
return (1);
modem = OpenModem(mode);
if (modem < 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 cmdtab const * list, int argc, char **argv)
{
FILE *oVarTerm;
if (mode & (MODE_DIRECT | MODE_DEDICATED | MODE_AUTO)) {
if (argc > 0 && !strcasecmp(*argv, "all") && (VarLocalAuth & LOCAL_AUTH)) {
mode &= ~MODE_INTER;
oVarTerm = VarTerm;
VarTerm = 0;
if (oVarTerm && oVarTerm != stdout)
fclose(oVarTerm);
Cleanup(EX_NORMAL);
} else if (VarTerm) {
LogPrintf(LogPHASE, "Client connection closed.\n");
VarLocalAuth = LOCAL_NO_AUTH;
mode &= ~MODE_INTER;
oVarTerm = VarTerm;
VarTerm = 0;
if (oVarTerm && oVarTerm != stdout)
fclose(oVarTerm);
close(netfd);
netfd = -1;
}
} else
Cleanup(EX_NORMAL);
return 0;
}
static int
CloseCommand(struct cmdtab const * list, int argc, char **argv)
{
reconnect(RECON_FALSE);
LcpClose();
if (mode & MODE_BACKGROUND)
Cleanup(EX_NORMAL);
return 0;
}
static int
DownCommand(struct cmdtab const * list, int argc, char **argv)
{
LcpDown();
return 0;
}
static int
SetModemSpeed(struct cmdtab const * list, int argc, char **argv)
{
int speed;
if (argc > 0) {
if (strcmp(*argv, "sync") == 0) {
VarSpeed = 0;
return 0;
}
speed = atoi(*argv);
if (IntToSpeed(speed) != B0) {
VarSpeed = speed;
return 0;
}
LogPrintf(LogWARN, "%s: Invalid speed\n", *argv);
}
return -1;
}
static int
SetReconnect(struct cmdtab const * list, int argc, char **argv)
{
if (argc == 2) {
VarReconnectTimer = atoi(argv[0]);
VarReconnectTries = atoi(argv[1]);
return 0;
}
return -1;
}
static int
SetRedialTimeout(struct cmdtab const * 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;
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;
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
SetStoppedTimeout(struct cmdtab const * list, int argc, char **argv)
{
LcpFsm.StoppedTimer.load = 0;
IpcpFsm.StoppedTimer.load = 0;
CcpFsm.StoppedTimer.load = 0;
if (argc <= 3) {
if (argc > 0) {
LcpFsm.StoppedTimer.load = atoi(argv[0]) * SECTICKS;
if (argc > 1) {
IpcpFsm.StoppedTimer.load = atoi(argv[1]) * SECTICKS;
if (argc > 2)
CcpFsm.StoppedTimer.load = atoi(argv[2]) * SECTICKS;
}
}
return 0;
}
return -1;
}
static int
SetServer(struct cmdtab const * 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);
} 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(struct cmdtab const * list, int argc, char **argv)
{
return argc > 0 ? ChangeParity(*argv) : -1;
}
static int
SetLogLevel(struct cmdtab const * 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);
break;
}
if (i > LogMAX) {
LogPrintf(LogWARN, "%s: Invalid log value\n", arg);
res = -1;
}
argv++;
}
return res;
}
static int
SetEscape(struct cmdtab const * 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;
}
static int
SetInitialMRU(struct cmdtab const * list, int argc, char **argv)
{
long mru;
char *err;
if (argc > 0) {
mru = atol(*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 cmdtab const * 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;
}
static int
SetIdleTimeout(struct cmdtab const * 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;
}
return -1;
}
struct in_addr
GetIpAddr(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(struct cmdtab const * list, int argc, char **argv)
{
DefMyAddress.ipaddr.s_addr = DefHisAddress.ipaddr.s_addr = 0L;
if (argc > 4)
return -1;
HaveTriggerAddress = 0;
ifnetmask.s_addr = 0;
if (argc > 0) {
if (ParseAddr(argc, argv++,
&DefMyAddress.ipaddr,
&DefMyAddress.mask,
&DefMyAddress.width) == 0)
return 1;
if (--argc > 0) {
if (ParseAddr(argc, argv++,
&DefHisAddress.ipaddr,
&DefHisAddress.mask,
&DefHisAddress.width) == 0)
return 2;
if (--argc > 0) {
ifnetmask = GetIpAddr(*argv);
if (--argc > 0) {
TriggerAddress = GetIpAddr(*argv);
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;
IpcpInfo.his_ipaddr.s_addr = DefHisAddress.ipaddr.s_addr;
if ((mode & MODE_AUTO) ||
((mode & MODE_DEDICATED) && dstsystem)) {
if (OsSetIpaddress(DefMyAddress.ipaddr, DefHisAddress.ipaddr, ifnetmask) < 0)
return 4;
}
return 0;
}
#ifndef NOMSEXT
void
SetMSEXT(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(struct cmdtab const * list, int argc, char **argv)
{
SetMSEXT(&ns_entries[0], &ns_entries[1], argc, argv);
return 0;
}
static int
SetNBNS(struct cmdtab const * list, int argc, char **argv)
{
SetMSEXT(&nbns_entries[0], &nbns_entries[1], argc, argv);
return 0;
}
#endif /* MS_EXT */
#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
static int
SetVariable(struct cmdtab const * list, int argc, char **argv, int param)
{
u_long map;
char *arg;
if (argc > 0)
arg = *argv;
else
arg = "";
switch (param) {
case VAR_AUTHKEY:
strncpy(VarAuthKey, arg, sizeof(VarAuthKey) - 1);
VarAuthKey[sizeof(VarAuthKey) - 1] = '\0';
break;
case VAR_AUTHNAME:
strncpy(VarAuthName, arg, sizeof(VarAuthName) - 1);
VarAuthName[sizeof(VarAuthName) - 1] = '\0';
break;
case VAR_DIAL:
strncpy(VarDialScript, arg, sizeof(VarDialScript) - 1);
VarDialScript[sizeof(VarDialScript) - 1] = '\0';
break;
case VAR_LOGIN:
strncpy(VarLoginScript, arg, sizeof(VarLoginScript) - 1);
VarLoginScript[sizeof(VarLoginScript) - 1] = '\0';
break;
case VAR_DEVICE:
CloseModem();
strncpy(VarDevice, arg, sizeof(VarDevice) - 1);
VarDevice[sizeof(VarDevice) - 1] = '\0';
VarBaseDevice = rindex(VarDevice, '/');
VarBaseDevice = VarBaseDevice ? VarBaseDevice + 1 : "";
break;
case VAR_ACCMAP:
sscanf(arg, "%lx", &map);
VarAccmap = map;
break;
case VAR_PHONE:
strncpy(VarPhoneList, arg, sizeof(VarPhoneList) - 1);
VarPhoneList[sizeof(VarPhoneList) - 1] = '\0';
strcpy(VarPhoneCopy, VarPhoneList);
VarNextPhone = VarPhoneCopy;
break;
case VAR_HANGUP:
strncpy(VarHangupScript, arg, sizeof(VarHangupScript) - 1);
VarHangupScript[sizeof(VarHangupScript) - 1] = '\0';
break;
}
return 0;
}
static int
SetCtsRts(struct cmdtab const * 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;
}
static int
SetOpenMode(struct cmdtab const * 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;
}
return -1;
}
extern int SetIfilter(), SetOfilter(), SetDfilter(), SetAfilter();
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 ..."},
{"loopback", NULL, SetLoopback, LOCAL_AUTH,
"Set loopback facility", "set loopback on|off"},
{"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]"},
{"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]", (void *) SetCommands},
{NULL, NULL, NULL},
};
static int
SetCommand(struct cmdtab const * 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");
else
LogPrintf(LogWARN, "set command must have arguments\n");
return 0;
}
static int
AddCommand(struct cmdtab const * 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]);
netmask = GetIpAddr(argv[1]);
if (strcasecmp(argv[2], "HISADDR") == 0)
gateway = IpcpInfo.his_ipaddr;
else
gateway = GetIpAddr(argv[2]);
OsSetRoute(RTM_ADD, dest, gateway, netmask);
return 0;
}
return -1;
}
static int
DeleteCommand(struct cmdtab const * 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;
}
}
} else
gateway.s_addr = INADDR_ANY;
OsSetRoute(RTM_DELETE, dest, gateway, netmask);
} else
return -1;
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,
"Display this message", "alias help|? [command]",
(void *) AliasCommands},
{NULL, NULL, NULL},
};
static int
AliasCommand(struct cmdtab const * 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(struct cmdtab const * 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(struct cmdtab const * list, int argc, char **argv, void *param)
{
if (argc == 1)
if (strcasecmp(argv[0], "yes") == 0) {
if (mode & MODE_ALIAS) {
VarPacketAliasSetMode((unsigned) param, (unsigned) param);
return 0;
}
LogPrintf(LogWARN, "alias not enabled\n");
} else if (strcmp(argv[0], "no") == 0) {
if (mode & MODE_ALIAS) {
VarPacketAliasSetMode(0, (unsigned) param);
return 0;
}
LogPrintf(LogWARN, "alias not enabled\n");
}
return -1;
}
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