/*
* main.c - Point-to-Point Protocol main module
*
* Copyright (c) 1989 Carnegie Mellon University.
* All rights reserved.
*
* 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 Carnegie Mellon University. The name of the
* University 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.
*/
#ifndef lint
/* static char rcsid[] = "$Id$"; */
#endif
#include <stdio.h>
#include <ctype.h>
/* #include <stdlib.h> */
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <fcntl.h>
#include <syslog.h>
#include <netdb.h>
#include <pwd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <rtems.h>
#include <rtems/rtems_bsdnet.h>
/* #include <stbconfig.h> */
#include "pppd.h"
#include "magic.h"
#include "fsm.h"
#include "lcp.h"
#include "ipcp.h"
#include "upap.h"
#include "chap.h"
#include "ccp.h"
#include "pathnames.h"
#include "patchlevel.h"
#ifdef CBCP_SUPPORT
#include "cbcp.h"
#endif
#if defined(SUNOS4)
extern char *strerror();
#endif
#ifdef IPX_CHANGE
#include "ipxcp.h"
#endif /* IPX_CHANGE */
#ifdef AT_CHANGE
#include "atcp.h"
#endif
void SetStatusInfo(int state, char * text, int res);
/* prototypes for routines in this file */
int connect_script(int fd);
/* interface vars */
char ifname[32]; /* Interface name */
int interfunit; /* Interface unit number */
char *progname; /* Name of this program */
char hostname[MAXNAMELEN] = "dcna"; /* Our hostname */
static char default_devnam[MAXPATHLEN]; /* name of default device */
/*static pid_t pid; */ /* Our pid */
static uid_t uid; /* Our real user-id */
static int conn_running; /* we have a [dis]connector running */
int ttyfd = -1; /* Serial port file descriptor */
mode_t tty_mode = -1; /* Original access permissions to tty */
int baud_rate; /* Actual bits/second for serial device */
int hungup; /* terminal has been hung up */
int privileged; /* we're running as real uid root */
int need_holdoff; /* need holdoff period before restarting */
int detached; /* have detached from terminal */
int phase; /* where the link is at */
int kill_link;
int open_ccp_flag;
char **script_env; /* Env. variable values for scripts */
int s_env_nalloc; /* # words avail at script_env */
u_char outpacket_buf[PPP_MRU + PPP_HDRLEN]; /* buffer for outgoing packet */
u_char inpacket_buf[PPP_MRU + PPP_HDRLEN]; /* buffer for incoming packet */
char *no_ppp_msg = "lack of PPP\n";
/* Prototypes for procedures local to this file. */
static void cleanup(void);
static void close_tty __P((void));
static void get_input __P((void));
static void calltimeout __P((void));
static struct timeval *timeleft __P((struct timeval *));
static void holdoff_end __P((void *));
static void reap_kids __P((void));
/* XXX currently unused */
#if 0
static int device_script __P((char *[], int, int));
static void pr_log __P((void *, char *,...));
#endif
extern char *ttyname __P((int));
extern char *getlogin __P((void));
int main __P((int, char *[]));
/*
* PPP Data Link Layer "protocol" table.
* One entry per supported protocol.
* The last entry must be NULL.
*/
struct protent *protocols[] =
{
&lcp_protent,
&pap_protent,
&chap_protent,
#ifdef CBCP_SUPPORT
&cbcp_protent,
#endif
&ipcp_protent,
&ccp_protent,
#ifdef IPX_CHANGE
&ipxcp_protent,
#endif
#ifdef AT_CHANGE
&atcp_protent,
#endif
NULL
};
extern int connect_stb();
extern int disconnect_stb();
extern struct in_addr rtems_bsdnet_nameserver[];
extern int rtems_bsdnet_nameserver_count;
extern int __res_init(void);
int pppdmain(argc, argv)
int argc;
char *argv[];
{
int i;
#if 0
struct timeval timo;
#endif
struct protent *protp;
struct stat statbuf;
#if 0
char t[100];
#endif
phase = PHASE_INITIALIZE;
strcpy(default_devnam, "/dev/modem");
strcpy(devnam, "/dev/modem");
script_env = NULL;
/* if (gethostname(hostname, MAXNAMELEN) < 0 ) {
die(1);
}
*/
hostname[MAXNAMELEN - 1] = 0;
uid = 0;
privileged = uid == 0;
/*
* Initialize to the standard option set, then parse, in order,
* the system options file, the user's options file,
* the tty's options file, and the command line arguments.
*/
for (i = 0; (protp = protocols[i]) != NULL; ++i)
(*protp->init) (0);
#if 1
if (!ppp_available()) {
exit(1);
}
#endif
/*
* Check that the options given are valid and consistent.
*/
sys_check_options();
auth_check_options();
for (i = 0; (protp = protocols[i]) != NULL; ++i)
if (protp->check_options != NULL)
(*protp->check_options) ();
/*
* If the user has specified the default device name explicitly,
* pretend they hadn't.
*/
if (!default_device && strcmp(devnam, default_devnam) == 0)
default_device = 1;
if (default_device)
nodetach = 1;
/*
* Initialize system-dependent stuff and magic number package.
*/
sys_init();
magic_init();
/*
* Detach ourselves from the terminal, if required,
* and identify who is running us.
*/
/*
syslog(LOG_NOTICE, "pppd %s.%d%s started by %s, uid %d",
VERSION, PATCHLEVEL, IMPLEMENTATION, p, uid);
*/
for (;;) {
#if 0 /* FIXME: how do we synchonize? */
/* !!! here should be done some kind of synchronization - I did it following way ... */
/* GlobalSystemStatus is set of different things shared between different tasks ... */
#if 0
/* XXX PPPConfiguration */
GlobalSystemStatus * volatile stat;
stat=LockSTBSystemParam();
stat->ConnectionStatus = NotConnected;
UnlockSTBSystemParam();
#endif
while (1) {
rtems_event_set events;
int status;
#if 0
/* XXX PPPConfiguration */
stat=LockSTBSystemParam();
status=stat->WantConnection;
UnlockSTBSystemParam();
if (status == Connect) break;
#endif
rtems_event_receive(RTEMS_EVENT_1, RTEMS_WAIT | RTEMS_EVENT_ANY, RTEMS_NO_TIMEOUT, &events);
}
#if 0
/* XXX PPPConfiguration */
stat=LockSTBSystemParam();
/* stat->WantConnection=DontConnect; */
stat->ConnectionStatus = Connecting;
/* Here you can change default nameserver ... */
rtems_bsdnet_nameserver[0].s_addr=inet_addr(stat->DNS);
rtems_bsdnet_nameserver_count=1;
UnlockSTBSystemParam();
#endif
/* initialize DNS services here */
SetStatusInfo(0, "Connecting...",0);
__res_init();
#endif /* FIXME */
/*
* Open the serial device and set it up to be the ppp interface.
* First we open it in non-blocking mode so we can set the
* various termios flags appropriately. If we aren't dialling
* out and we want to use the modem lines, we reopen it later
* in order to wait for the carrier detect signal from the modem.
*/
while ((ttyfd = open(devnam, O_NONBLOCK | O_RDWR, 0)) < 0) {
if (errno != EINTR)
syslog(LOG_ERR, "Failed to open %s: %m", devnam);
if (!persist || errno != EINTR)
goto fail;
}
hungup = 0;
kill_link = 0;
/*
* Do the equivalent of `mesg n' to stop broadcast messages.
*/
tty_mode = statbuf.st_mode;
/* run connection script */
/*
* Set line speed, flow control, etc.
* On most systems we set CLOCAL for now so that we can talk
* to the modem before carrier comes up. But this has the
* side effect that we might miss it if CD drops before we
* get to clear CLOCAL below. On systems where we can talk
* successfully to the modem with CLOCAL clear and CD down,
* we can clear CLOCAL at this point.
*/
set_up_tty(ttyfd, 1);
/* drop dtr to hang up in case modem is off hook */
setdtr(ttyfd, FALSE);
sleep(1);
setdtr(ttyfd, TRUE);
{
/* Make a call ... */
#if 0
/* XXX PPPConfiguration */
char t[100];
stat=LockSTBSystemParam();
sprintf(t,"Calling the number %s ...",stat->Phone_Number);
UnlockSTBSystemParam();
SetStatusInfo(0, t,0);
#endif
}
if ((i=connect_script(ttyfd)) >0) {
#if 0
/* here go error messages ... */
static char *error_msgs[]={ "Bad script", "IO Error"
"Timeout", "Busy", "No dialtone", "No carrier",
"No answer", "No answer from server" };
setdtr(ttyfd, FALSE);
sprintf(t,"Communication error: %s",error_msgs[i-1]);
syslog(LOG_ERR, "Connect script failed");
SetStatusInfo(0, t,1);
#endif
goto fail;
}
else
if (i<0)
{
#if 0
char t[100];
sprintf(t,"Connecting the Internet at %d baud...",-i);
SetStatusInfo(0, t,0);
#endif
}
else
{
#if 0
SetStatusInfo(0, "Connecting the Internet...",0);
#endif
}
syslog(LOG_INFO, "Serial connection established.");
sleep(1); /* give it time to set up its terminal */
/* set line speed, flow control, etc.; clear CLOCAL if modem option */
set_up_tty(ttyfd, 0);
/* reopen tty if necessary to wait for carrier */
/* run welcome script, if any */
/* if (welcomer && welcomer[0]) {
if (device_script(welcomer, 21, ttyfd) < 0)
syslog(LOG_WARNING, "Welcome script failed");
}
*/
/* set up the serial device as a ppp interface */
establish_ppp(ttyfd);
/* syslog(LOG_INFO, "Using interface ppp%d", interfunit); */
(void) sprintf(ifname, "ppp%d", interfunit);
/*
* Start opening the connection and wait for
* incoming events (reply, timeout, etc.).
*/
/* syslog(LOG_NOTICE, "Connect: %s <--> %s", ifname, devnam); */
rtems_bsdnet_semaphore_obtain();
lcp_lowerup(0);
lcp_open(0); /* Start protocol */
rtems_bsdnet_semaphore_release();
#if 0
SetStatusInfo(0, "Internet connection established.",1);
#endif
for (phase = PHASE_ESTABLISH; phase != PHASE_DEAD;) {
#if 0
wait_input(timeleft(&timo));
#endif
calltimeout();
get_input();
#if 0
/* XXX PPPConfiguration */
stat=LockSTBSystemParam();
if (stat->WantConnection==DontConnect) {
stat->ConnectionStatus = NotConnected;
SetStatusInfo(0, "Disconnecting ...",0);
lcp_close(0, "");
kill_link = 0;
}
UnlockSTBSystemParam();
#endif
if (open_ccp_flag) {
if (phase == PHASE_NETWORK) {
ccp_fsm[0].flags = OPT_RESTART; /* clears OPT_SILENT */
(*ccp_protent.open) (0);
}
open_ccp_flag = 0;
}
}
/*
* If we may want to bring the link up again, transfer
* the ppp unit back to the loopback. Set the
* real serial device back to its normal mode of operation.
*/
clean_check();
disestablish_ppp(ttyfd);
#if 0
SetStatusInfo(0, "Broken the internet connection.",1);
#endif
/*
* Run disconnector script, if requested.
* XXX we may not be able to do this if the line has hung up!
*/
/* if (disconnector && !hungup) {
set_up_tty(ttyfd, 1);
if (device_script(disconnector, ttyfd, ttyfd) < 0) {
syslog(LOG_WARNING, "disconnect script failed");
} else {
syslog(LOG_INFO, "Serial link disconnected.");
}
}
*/
fail:
#if 0
/* XXX PPPConfiguration */
stat=LockSTBSystemParam();
stat->ConnectionStatus = NotConnected;
stat->WantConnection=DontConnect;
UnlockSTBSystemParam();
#endif
if (ttyfd >= 0)
close_tty();
}
return 0;
}
/*
* detach - detach us from the controlling terminal.
*/
void detach()
{
}
/*
* holdoff_end - called via a timeout when the holdoff period ends.
*/
static void holdoff_end(arg)
void *arg;
{
phase = PHASE_DORMANT;
}
/*
* get_input - called when incoming data is available.
*/
static void get_input()
{
int len, i;
u_char *p;
u_short protocol;
struct protent *protp;
p = inpacket_buf; /* point to beginning of packet buffer */
len = read_packet(inpacket_buf);
if (len < 0)
return;
if (len == 0) {
#if 0
/* XXX PPPConfiguration */
GlobalSystemStatus * volatile stat;
#endif
/* syslog(LOG_NOTICE, "Modem hangup"); */
hungup = 1;
#if 0
/* XXX PPPConfiguration */
stat=LockSTBSystemParam();
stat->ConnectionStatus = NotConnected;
UnlockSTBSystemParam();
#endif
lcp_lowerdown(0); /* serial link is no longer available */
link_terminated(0);
return;
}
/* if ((debug))
log_packet(p, len, "rcvd ", LOG_DEBUG);
*/
if (len < PPP_HDRLEN) {
/*
if (debug)
MAINDEBUG((LOG_INFO, "io(): Received short packet."));
*/
return;
}
/* We need to modify internal network structures here */
rtems_bsdnet_semaphore_obtain();
p += 2; /* Skip address and control */
GETSHORT(protocol, p);
len -= PPP_HDRLEN;
/*
* Toss all non-LCP packets unless LCP is OPEN.
*/
if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) {
MAINDEBUG((LOG_INFO,
"get_input: Received non-LCP packet when LCP not open."));
rtems_bsdnet_semaphore_release();
return;
}
/*
* Until we get past the authentication phase, toss all packets
* except LCP, LQR and authentication packets.
*/
if (phase <= PHASE_AUTHENTICATE
&& !(protocol == PPP_LCP || protocol == PPP_LQR
|| protocol == PPP_PAP || protocol == PPP_CHAP)) {
rtems_bsdnet_semaphore_release();
return;
}
/*
* Upcall the proper protocol input routine.
*/
for (i = 0; (protp = protocols[i]) != NULL; ++i) {
if (protp->protocol == protocol && protp->enabled_flag) {
(*protp->input) (0, p, len);
rtems_bsdnet_semaphore_release();
return;
}
if (protocol == (protp->protocol & ~0x8000) && protp->enabled_flag
&& protp->datainput != NULL) {
(*protp->datainput) (0, p, len);
rtems_bsdnet_semaphore_release();
return;
}
}
lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN);
rtems_bsdnet_semaphore_release();
}
/*
* quit - Clean up state and exit (with an error indication).
*/
void quit()
{
die(1);
}
/*
* die - like quit, except we can specify an exit status.
*/
void die(status)
int status;
{
cleanup();
}
/*
* cleanup - restore anything which needs to be restored before we exit
*/
/* ARGSUSED */
static void cleanup()
{
sys_cleanup();
if (ttyfd >= 0)
close_tty();
}
/*
* close_tty - restore the terminal device and close it.
*/
static void close_tty()
{
disestablish_ppp(ttyfd);
/* drop dtr to hang up */
setdtr(ttyfd, FALSE);
/*
* This sleep is in case the serial port has CLOCAL set by default,
* and consequently will reassert DTR when we close the device.
*/
sleep(1);
restore_tty(ttyfd);
close(ttyfd);
ttyfd = -1;
}
struct callout {
struct timeval c_time;
void *c_arg;
void (*c_func) __P((void *));
struct callout *c_next;
};
static struct callout *callout = NULL;
static struct timeval timenow;
/*
* timeout - Schedule a timeout.
*
* Note that this timeout takes the number of seconds, NOT hz (as in
* the kernel).
*/
void my_timeout(func, arg, time)
void (*func) __P((void *));
void *arg;
int time;
{
struct callout *newp, *p, **pp;
MAINDEBUG((LOG_DEBUG, "Timeout %lx:%lx in %d seconds.",
(long) func, (long) arg, time));
/*
* Allocate timeout.
*/
if ((newp = (struct callout *) malloc(sizeof(struct callout))) == NULL) {
/* syslog(LOG_ERR, "Out of memory in timeout()!"); */
die(1);
}
newp->c_arg = arg;
newp->c_func = func;
gettimeofday(&timenow, NULL);
newp->c_time.tv_sec = timenow.tv_sec + time;
newp->c_time.tv_usec = timenow.tv_usec;
/*
* Find correct place and link it in.
*/
for (pp = &callout; (p = *pp); pp = &p->c_next)
if (newp->c_time.tv_sec < p->c_time.tv_sec
|| (newp->c_time.tv_sec == p->c_time.tv_sec
&& newp->c_time.tv_usec < p->c_time.tv_sec))
break;
newp->c_next = p;
*pp = newp;
}
/*
* untimeout - Unschedule a timeout.
*/
void untimeout(func, arg)
void (*func) __P((void *));
void *arg;
{
struct callout **copp, *freep;
MAINDEBUG((LOG_DEBUG, "Untimeout %lx:%lx.", (long) func, (long) arg));
for (copp = &callout; (freep = *copp); copp = &freep->c_next)
if (freep->c_func == func && freep->c_arg == arg) {
*copp = freep->c_next;
(void) free((char *) freep);
break;
}
}
/*
* calltimeout - Call any timeout routines which are now due.
*/
static void calltimeout()
{
struct callout *p;
while (callout != NULL) {
p = callout;
if (gettimeofday(&timenow, NULL) < 0) {
die(1);
}
if (!(p->c_time.tv_sec < timenow.tv_sec
|| (p->c_time.tv_sec == timenow.tv_sec
&& p->c_time.tv_usec <= timenow.tv_usec)))
break; /* no, it's not time yet */
callout = p->c_next;
(*p->c_func) (p->c_arg);
free((char *) p);
}
}
/*
* timeleft - return the length of time until the next timeout is due.
*/
static struct timeval *
timeleft(tvp)
struct timeval *tvp;
{
if (callout == NULL)
return NULL;
gettimeofday(&timenow, NULL);
tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec;
tvp->tv_usec = callout->c_time.tv_usec - timenow.tv_usec;
if (tvp->tv_usec < 0) {
tvp->tv_usec += 1000000;
tvp->tv_sec -= 1;
}
if (tvp->tv_sec < 0)
tvp->tv_sec = tvp->tv_usec = 0;
return tvp;
}
/*
* term - Catch SIGTERM signal and SIGINT signal (^C/del).
*
* Indicates that we should initiate a graceful disconnect and exit.
*/
static void term(sig)
int sig;
{
/* persist = 0; *//* don't try to restart */
kill_link = 1;
}
int modem_fd; /* FIXME: should not be global... */
int connect_script(int fd)
{
#if 0 /* FIXME: This is WinNT special */
char program[256] = "TIMEOUT@10@@CLIENT@CLIENTSERVER";
#else
char program[256] = { 0 };
#endif
#if 0
/* XXX PPPConfiguration */
GlobalSystemStatus * volatile stat;
#endif
#if 0
/* Connect scripts are almost the same as in Linux Chat ... */
static char *scripts[] =
{
"TIMEOUT@5@@\rAT@OK-+++\\c-OK@ATH0@TIMEOUT@90@OK@ATDT%s@CONNECT@",
"TIMEOUT@5@@\rAT@OK-+++\\c-OK@ATH0@TIMEOUT@90@OK@ATDT%s@CONNECT@@ppp@@Username:@%s@Password:@%s@"
};
#endif
modem_fd = fd;
#if 0
/* XXX PPPConfiguration */
stat=LockSTBSystemParam();
if (strcmp("",stat->PPP_User))
{
stat->provider=Poland_TPSA;
}
else
stat->provider=DumbLogin;
switch (stat->provider) {
case Poland_TPSA: /* TPSA - Polish Telecom */
sprintf(program, scripts[1], stat->Phone_Number, stat->PPP_User, stat->PPP_Password);
break;
default:
sprintf(program, scripts[0], stat->Phone_Number);
}
UnlockSTBSystemParam();
#endif
conn_running = 0;
return chatmain(program);
}
/*
* run-program - execute a program with given arguments,
* but don't wait for it.
* If the program can't be executed, logs an error unless
* must_exist is 0 and the program file doesn't exist.
*/
int run_program(prog, args, must_exist)
char *prog;
char **args;
int must_exist;
{
return 0;
}
/*
* reap_kids - get status from any dead child processes,
* and log a message for abnormal terminations.
*/
static void reap_kids()
{
}
/*
* log_packet - format a packet and log it.
*/
char line[256];
char *linep;
/*#define log_packet(p, len, prefix, level) */
void log_packet(p, len, prefix, level)
u_char *p;
int len;
char *prefix;
int level;
{
strcpy(line, prefix);
linep = line + strlen(line);
/* format_packet(p, len, pr_log, NULL); */
/* if (linep != line)
syslog(level, "%s", line);
*/
}
/*
* format_packet - make a readable representation of a packet,
* calling `printer(arg, format, ...)' to output it.
*/
/*#define format_packet(p, len, printer, arg) */
void format_packet(p, len, printer, arg)
u_char *p;
int len;
void (*printer) __P((void *, char *,...));
void *arg;
{
/*
int i, n;
u_short proto;
struct protent *protp;
if (len >= PPP_HDRLEN && p[0] == PPP_ALLSTATIONS && p[1] == PPP_UI) {
p += 2;
GETSHORT(proto, p);
len -= PPP_HDRLEN;
for (i = 0; (protp = protocols[i]) != NULL; ++i)
if (proto == protp->protocol)
break;
if (protp != NULL) {
printer(arg, "[%s", protp->name);
n = (*protp->printpkt) (p, len, printer, arg);
printer(arg, "]");
p += n;
len -= n;
} else {
printer(arg, "[proto=0x%x]", proto);
}
}
*/
/* for (; len > 0; --len) {
GETCHAR(x, p);
printer(arg, " %.2x", x);
}
*/
}
/* XXX currently unused */
#if 0
static void
pr_log __V((void *arg, char *fmt,...))
{
int n;
va_list pvar;
char buf[256];
#if __STDC__
va_start(pvar, fmt);
#else
void *arg;
char *fmt;
va_start(pvar);
arg = va_arg(pvar, void *);
fmt = va_arg(pvar, char *);
#endif
n = vfmtmsg(buf, sizeof(buf), fmt, pvar);
va_end(pvar);
if (linep + n + 1 > line + sizeof(line)) {
/* syslog(LOG_DEBUG, "%s", line); */
linep = line;
}
strcpy(linep, buf);
linep += n;
}
#endif
/*
* print_string - print a readable representation of a string using
* printer.
*/
/*#define print_string(p, len, printer, arg) */
void print_string(p, len, printer, arg)
char *p;
int len;
void (*printer) __P((void *, char *,...));
void *arg;
{
int c;
printer(arg, "\"");
for (; len > 0; --len) {
c = *p++;
if (' ' <= c && c <= '~') {
if (c == '\\' || c == '"')
printer(arg, "\\");
printer(arg, "%c", c);
} else {
switch (c) {
case '\n':
printer(arg, "\\n");
break;
case '\r':
printer(arg, "\\r");
break;
case '\t':
printer(arg, "\\t");
break;
default:
printer(arg, "\\%.3o", c);
}
}
}
printer(arg, "\"");
}
/*
* novm - log an error message saying we ran out of memory, and die.
*/
void novm(msg)
char *msg;
{
/* syslog(LOG_ERR, "Virtual memory exhausted allocating %s\n", msg);
*/ die(1);
}
/*
* fmtmsg - format a message into a buffer. Like sprintf except we
* also specify the length of the output buffer, and we handle
* %r (recursive format), %m (error message) and %I (IP address) formats.
* Doesn't do floating-point formats.
* Returns the number of chars put into buf.
*/
int
fmtmsg __V((char *buf, int buflen, char *fmt,...))
{
va_list args;
int n;
#if __STDC__
va_start(args, fmt);
#else
char *buf;
int buflen;
char *fmt;
va_start(args);
buf = va_arg(args, char *);
buflen = va_arg(args, int);
fmt = va_arg(args, char *);
#endif
n = vfmtmsg(buf, buflen, fmt, args);
va_end(args);
return n;
}
/*
* vfmtmsg - like fmtmsg, takes a va_list instead of a list of args.
*/
#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0)
/*#define vfmtmsg(buf, buflen, fmt, args) */
int vfmtmsg(buf, buflen, fmt, args)
char *buf;
int buflen;
char *fmt;
va_list args;
{
/* int c, i, n;
int width, prec, fillch;
int base, len, neg, quoted;
unsigned long val = 0;
char *str, *f, *buf0;
unsigned char *p;
char num[32];
time_t t;
static char hexchars[] = "0123456789abcdef";
buf0 = buf;
--buflen;
while (buflen > 0) {
for (f = fmt; *f != '%' && *f != 0; ++f)
;
if (f > fmt) {
len = f - fmt;
if (len > buflen)
len = buflen;
memcpy(buf, fmt, len);
buf += len;
buflen -= len;
fmt = f;
}
if (*fmt == 0)
break;
c = *++fmt;
width = prec = 0;
fillch = ' ';
if (c == '0') {
fillch = '0';
c = *++fmt;
}
if (c == '*') {
width = va_arg(args, int);
c = *++fmt;
} else {
while (isdigit(c)) {
width = width * 10 + c - '0';
c = *++fmt;
}
}
if (c == '.') {
c = *++fmt;
if (c == '*') {
prec = va_arg(args, int);
c = *++fmt;
} else {
while (isdigit(c)) {
prec = prec * 10 + c - '0';
c = *++fmt;
}
}
}
str = 0;
base = 0;
neg = 0;
++fmt;
switch (c) {
case 'd':
i = va_arg(args, int);
if (i < 0) {
neg = 1;
val = -i;
} else
val = i;
base = 10;
break;
case 'o':
val = va_arg(args, unsigned int);
base = 8;
break;
case 'x':
val = va_arg(args, unsigned int);
base = 16;
break;
case 'p':
val = (unsigned long) va_arg(args, void *);
base = 16;
neg = 2;
break;
case 's':
str = va_arg(args, char *);
break;
case 'c':
num[0] = va_arg(args, int);
num[1] = 0;
str = num;
break;
case 'm':
str = strerror(errno);
break;
case 'I':
str = ip_ntoa(va_arg(args, u_int32_t));
break;
case 'r':
f = va_arg(args, char *);
#ifndef __powerpc__
n = vfmtmsg(buf, buflen + 1, f, va_arg(args, va_list));
#else
n = vfmtmsg(buf, buflen + 1, f, va_arg(args, void *));
#endif
buf += n;
buflen -= n;
continue;
case 't':
break;
case 'v':
case 'q':
quoted = c == 'q';
p = va_arg(args, unsigned char *);
if (fillch == '0' && prec > 0) {
n = prec;
} else {
n = strlen((char *)p);
if (prec > 0 && prec < n)
n = prec;
}
while (n > 0 && buflen > 0) {
c = *p++;
--n;
if (!quoted && c >= 0x80) {
OUTCHAR('M');
OUTCHAR('-');
c -= 0x80;
}
if (quoted && (c == '"' || c == '\\'))
OUTCHAR('\\');
if (c < 0x20 || (0x7f <= c && c < 0xa0)) {
if (quoted) {
OUTCHAR('\\');
switch (c) {
case '\t': OUTCHAR('t'); break;
case '\n': OUTCHAR('n'); break;
case '\b': OUTCHAR('b'); break;
case '\f': OUTCHAR('f'); break;
default:
OUTCHAR('x');
OUTCHAR(hexchars[c >> 4]);
OUTCHAR(hexchars[c & 0xf]);
}
} else {
if (c == '\t')
OUTCHAR(c);
else {
OUTCHAR('^');
OUTCHAR(c ^ 0x40);
}
}
} else
OUTCHAR(c);
}
continue;
default:
*buf++ = '%';
if (c != '%')
--fmt;
--buflen;
continue;
}
if (base != 0) {
str = num + sizeof(num);
*--str = 0;
while (str > num + neg) {
*--str = hexchars[val % base];
val = val / base;
if (--prec <= 0 && val == 0)
break;
}
switch (neg) {
case 1:
*--str = '-';
break;
case 2:
*--str = 'x';
*--str = '0';
break;
}
len = num + sizeof(num) - 1 - str;
} else {
len = strlen(str);
if (prec > 0 && len > prec)
len = prec;
}
if (width > 0) {
if (width > buflen)
width = buflen;
if ((n = width - len) > 0) {
buflen -= n;
for (; n > 0; --n)
*buf++ = fillch;
}
}
if (len > buflen)
len = buflen;
memcpy(buf, str, len);
buf += len;
buflen -= len;
}
*buf = 0;
return buf - buf0;
*/
return 0;
}
/*
* script_setenv - set an environment variable value to be used
* for scripts that we run (e.g. ip-up, auth-up, etc.)
*/
#define script_setenv(var, value)
/*
void
script_setenv(var, value)
char *var, *value;
{
int vl = strlen(var);
int i;
char *p, *newstring;
newstring = (char *) malloc(vl + strlen(value) + 2);
if (newstring == 0)
return;
strcpy(newstring, var);
newstring[vl] = '=';
strcpy(newstring+vl+1, value);
if (script_env != 0) {
for (i = 0; (p = script_env[i]) != 0; ++i) {
if (strncmp(p, var, vl) == 0 && p[vl] == '=') {
free(p);
script_env[i] = newstring;
return;
}
}
} else {
i = 0;
script_env = (char **) malloc(16 * sizeof(char *));
if (script_env == 0)
return;
s_env_nalloc = 16;
}
if (i + 1 >= s_env_nalloc) {
int new_n = i + 17;
char **newenv = (char **) realloc((void *)script_env,
new_n * sizeof(char *));
if (newenv == 0)
return;
script_env = newenv;
s_env_nalloc = new_n;
}
script_env[i] = newstring;
script_env[i+1] = 0;
}
*//*
* script_unsetenv - remove a variable from the environment
* for scripts.
*/
#define script_unsetenv(var)
/*
void
script_unsetenv(var)
char *var;
{
int vl = strlen(var);
int i;
char *p;
if (script_env == 0)
return;
for (i = 0; (p = script_env[i]) != 0; ++i) {
if (strncmp(p, var, vl) == 0 && p[vl] == '=') {
free(p);
while ((script_env[i] = script_env[i+1]) != 0)
++i;
break;
}
}
}
*/
