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/*
* compat.c
*
* Compatibility functions for different OSes
*
* $Id: compat.c,v 1.1.1.1 1999/12/17 16:30:14 patl Exp $
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#ifndef HAVE_STRLCPY
#include "compat.h"
#include <string.h>
void strlcpy(char *dst, const char *src, size_t size)
{
strncpy(dst, src, size - 1);
dst[size - 1] = '\0';
}
#endif
#ifndef HAVE_MEMMOVE
void *memmove(void *dst, const void *src, size_t size)
{
bcopy(src, dst, size);
return dst;
}
#endif
#ifndef HAVE_OPENPTY
/*
* Finds a free PTY/TTY pair.
*
* This is derived from C.S. Ananian's pty.c that was with his pptp client.
*
*************************************************************************
* pty.c - find a free pty/tty pair.
* inspired by the xterm source.
* NOTE: This is very likely to be highly non-portable.
* C. Scott Ananian <cananian@alumni.princeton.edu>
*
* Heavily modified to chage from getpseudopty() to openpty().
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#if HAVE_SYSLOG_H
#include <syslog.h>
#else
#include "our_syslog.h"
#endif
int openpty(int *master, int *slave, char *name, void *unused1, void *unused2)
{
int devindex = 0, letter = 0;
int fd1, fd2;
char ttydev[PTYMAX], ptydev[TTYMAX];
syslog(LOG_DEBUG, "CTRL: Allocating pty/tty pair");
strcpy(ttydev, TTYDEV);
strcpy(ptydev, PTYDEV);
while (PTYCHAR1[letter]) {
ttydev[TTYMAX - 3] = ptydev[PTYMAX - 3] = PTYCHAR1[letter];
while (PTYCHAR2[devindex]) {
ttydev[TTYMAX - 2] = ptydev[PTYMAX - 2] = PTYCHAR2[devindex];
if ((fd1 = open(ptydev, O_RDWR)) >= 0) {
if ((fd2 = open(ttydev, O_RDWR)) >= 0) {
goto out;
} else {
close(fd1);
}
}
devindex++;
}
devindex = 0;
letter++;
}
syslog(LOG_ERR, "CTRL: Failed to allocate pty");
return -1; /* Unable to allocate pty */
out:
syslog(LOG_INFO, "CTRL: Allocated pty/tty pair (%s,%s)", ptydev, ttydev);
if (master)
*master = fd1;
if (slave)
*slave = fd2;
if (name)
strcpy(name, ttydev); /* no way to bounds check */
return 0;
}
#endif
#ifndef HAVE_STRERROR
char *strerror(int errnum) {
static char buf[16];
sprintf(buf, "Error %d", errnum);
return buf;
}
#endif
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