FreeBSD-5.3/usr.sbin/ppp/defs.c
/*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/usr.sbin/ppp/defs.c,v 1.47 2002/05/14 12:55:36 brian Exp $
*/
#include <sys/param.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include <sys/module.h>
#endif
#include <termios.h>
#if !defined(__FreeBSD__) || __FreeBSD__ < 3
#include <time.h>
#endif
#include <unistd.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include "id.h"
#include "log.h"
#endif
#include "defs.h"
#define issep(c) ((c) == '\t' || (c) == ' ')
#if defined(__NetBSD__) || __FreeBSD__ < 3
void
randinit()
{
#if defined(__FreeBSD__)
static int initdone; /* srandomdev() call is only required once */
if (!initdone) {
initdone = 1;
srandomdev();
}
#else
srandom((time(NULL)^getpid())+random());
#endif
}
#endif
ssize_t
fullread(int fd, void *v, size_t n)
{
size_t got, total;
for (total = 0; total < n; total += got)
switch ((got = read(fd, (char *)v + total, n - total))) {
case 0:
return total;
case -1:
if (errno == EINTR)
got = 0;
else
return -1;
}
return total;
}
static struct {
int mode;
const char *name;
} modes[] = {
{ PHYS_INTERACTIVE, "interactive" },
{ PHYS_AUTO, "auto" },
{ PHYS_DIRECT, "direct" },
{ PHYS_DEDICATED, "dedicated" },
{ PHYS_DDIAL, "ddial" },
{ PHYS_BACKGROUND, "background" },
{ PHYS_FOREGROUND, "foreground" },
{ PHYS_ALL, "*" },
{ 0, 0 }
};
const char *
mode2Nam(int mode)
{
int m;
for (m = 0; modes[m].mode; m++)
if (modes[m].mode == mode)
return modes[m].name;
return "unknown";
}
int
Nam2mode(const char *name)
{
int m, got, len;
len = strlen(name);
got = -1;
for (m = 0; modes[m].mode; m++)
if (!strncasecmp(name, modes[m].name, len)) {
if (modes[m].name[len] == '\0')
return modes[m].mode;
if (got != -1)
return 0;
got = m;
}
return got == -1 ? 0 : modes[got].mode;
}
struct in_addr
GetIpAddr(const char *cp)
{
struct in_addr ipaddr;
if (!strcasecmp(cp, "default"))
ipaddr.s_addr = INADDR_ANY;
else if (inet_aton(cp, &ipaddr) == 0) {
const char *ptr;
/* Any illegal characters ? */
for (ptr = cp; *ptr != '\0'; ptr++)
if (!isalnum(*ptr) && strchr("-.", *ptr) == NULL)
break;
if (*ptr == '\0') {
struct hostent *hp;
hp = gethostbyname(cp);
if (hp && hp->h_addrtype == AF_INET)
memcpy(&ipaddr, hp->h_addr, hp->h_length);
else
ipaddr.s_addr = INADDR_NONE;
} else
ipaddr.s_addr = INADDR_NONE;
}
return ipaddr;
}
static const struct speeds {
int nspeed;
speed_t speed;
} speeds[] = {
#ifdef B50
{ 50, B50, },
#endif
#ifdef B75
{ 75, B75, },
#endif
#ifdef B110
{ 110, B110, },
#endif
#ifdef B134
{ 134, B134, },
#endif
#ifdef B150
{ 150, B150, },
#endif
#ifdef B200
{ 200, B200, },
#endif
#ifdef B300
{ 300, B300, },
#endif
#ifdef B600
{ 600, B600, },
#endif
#ifdef B1200
{ 1200, B1200, },
#endif
#ifdef B1800
{ 1800, B1800, },
#endif
#ifdef B2400
{ 2400, B2400, },
#endif
#ifdef B4800
{ 4800, B4800, },
#endif
#ifdef B9600
{ 9600, B9600, },
#endif
#ifdef B19200
{ 19200, B19200, },
#endif
#ifdef B38400
{ 38400, B38400, },
#endif
#ifndef _POSIX_SOURCE
#ifdef B7200
{ 7200, B7200, },
#endif
#ifdef B14400
{ 14400, B14400, },
#endif
#ifdef B28800
{ 28800, B28800, },
#endif
#ifdef B57600
{ 57600, B57600, },
#endif
#ifdef B76800
{ 76800, B76800, },
#endif
#ifdef B115200
{ 115200, B115200, },
#endif
#ifdef B230400
{ 230400, B230400, },
#endif
#ifdef B460800
{ 460800, B460800, },
#endif
#ifdef B921600
{ 921600, B921600, },
#endif
#ifdef EXTA
{ 19200, EXTA, },
#endif
#ifdef EXTB
{ 38400, EXTB, },
#endif
#endif /* _POSIX_SOURCE */
{ 0, 0 }
};
int
SpeedToInt(speed_t speed)
{
const struct speeds *sp;
for (sp = speeds; sp->nspeed; sp++) {
if (sp->speed == speed) {
return sp->nspeed;
}
}
return 0;
}
speed_t
IntToSpeed(int nspeed)
{
const struct speeds *sp;
for (sp = speeds; sp->nspeed; sp++) {
if (sp->nspeed == nspeed) {
return sp->speed;
}
}
return B0;
}
char *
findblank(char *p, int flags)
{
int instring;
instring = 0;
while (*p) {
if (*p == '\\') {
if (flags & PARSE_REDUCE) {
memmove(p, p + 1, strlen(p));
if (!*p)
break;
} else
p++;
} else if (*p == '"') {
memmove(p, p + 1, strlen(p));
instring = !instring;
continue;
} else if (!instring && (issep(*p) ||
(*p == '#' && !(flags & PARSE_NOHASH))))
return p;
p++;
}
return instring ? NULL : p;
}
int
MakeArgs(char *script, char **pvect, int maxargs, int flags)
{
int nargs;
nargs = 0;
while (*script) {
script += strspn(script, " \t");
if (*script == '#' && !(flags & PARSE_NOHASH)) {
*script = '\0';
break;
}
if (*script) {
if (nargs >= maxargs - 1)
break;
*pvect++ = script;
nargs++;
script = findblank(script, flags);
if (script == NULL)
return -1;
else if (!(flags & PARSE_NOHASH) && *script == '#')
*script = '\0';
else if (*script)
*script++ = '\0';
}
}
*pvect = NULL;
return nargs;
}
const char *
NumStr(long val, char *buf, size_t sz)
{
static char result[23]; /* handles 64 bit numbers */
if (buf == NULL || sz == 0) {
buf = result;
sz = sizeof result;
}
snprintf(buf, sz, "<%ld>", val);
return buf;
}
const char *
HexStr(long val, char *buf, size_t sz)
{
static char result[21]; /* handles 64 bit numbers */
if (buf == NULL || sz == 0) {
buf = result;
sz = sizeof result;
}
snprintf(buf, sz, "<0x%lx>", val);
return buf;
}
const char *
ex_desc(int ex)
{
static char num[12]; /* Used immediately if returned */
static const char * const desc[] = {
"normal", "start", "sock", "modem", "dial", "dead", "done",
"reboot", "errdead", "hangup", "term", "nodial", "nologin",
"redial", "reconnect"
};
if (ex >= 0 && ex < sizeof desc / sizeof *desc)
return desc[ex];
snprintf(num, sizeof num, "%d", ex);
return num;
}
void
SetTitle(const char *title)
{
if (title == NULL)
setproctitle(NULL);
else if (title[0] == '-' && title[1] != '\0')
setproctitle("-%s", title + 1);
else
setproctitle("%s", title);
}
fd_set *
mkfdset()
{
return (fd_set *)malloc(howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
}
void
zerofdset(fd_set *s)
{
memset(s, '\0', howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
}
void
Concatinate(char *buf, size_t sz, int argc, const char *const *argv)
{
int i, n, pos;
*buf = '\0';
for (pos = i = 0; i < argc; i++) {
n = snprintf(buf + pos, sz - pos, "%s%s", i ? " " : "", argv[i]);
if (n < 0) {
buf[pos] = '\0';
break;
}
if ((pos += n) >= sz)
break;
}
}
int
loadmodules(int how, const char *module, ...)
{
int loaded = 0;
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
va_list ap;
va_start(ap, module);
while (module != NULL) {
if (modfind(module) == -1) {
if (ID0kldload(module) == -1) {
if (how == LOAD_VERBOSLY)
log_Printf(LogWARN, "%s: Cannot load module\n", module);
} else
loaded++;
}
module = va_arg(ap, const char *);
}
va_end(ap);
#endif
return loaded;
}