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/* misc.c - utility routines for the tty server
* vixie 14may94 [cloned from ttyprot.c (12Sep91)]
*/
#ifndef LINT
static char RCSid[] = "$Id: misc.c,v 1.7 2001/03/24 21:14:27 vixie Exp $";
#endif
/* Copyright (c) 1996 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <netinet/in.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include "rtty.h"
#include "misc.h"
#include "ttyprot.h"
#ifdef NEED_BITYPES_H
# include "bitypes.h"
#endif
#include <stdlib.h>
#if DEBUG
extern int Debug;
#endif
void
cat_v(FILE *file, const u_char *buf, int nchars) {
while (nchars-- > 0) {
int c = *buf++;
if (isprint(c)) {
fputc(c, file);
} else if (iscntrl(c)) {
fputc('^', file);
fputc('@' + c, file); /* XXX assumes ASCII */
} else {
fprintf(file, "\\%03o", c);
}
}
}
int
install_ttyios(int tty, const struct termios *ios) {
#ifdef DEBUG
if (Debug) {
fprintf(stderr,
"install_termios(%d): C=0x%x L=0x%x I=0x%x O=0x%x m=%d t=%d\n",
tty, ios->c_cflag, ios->c_lflag,
ios->c_iflag, ios->c_oflag,
ios->c_cc[VMIN], ios->c_cc[VTIME]);
}
#endif
if (0 > tcsetattr(tty, TCSANOW, ios)) {
perror("tcsetattr");
return (-1);
}
return (0);
}
void
prepare_term(struct termios *ios, cc_t vmin) {
ios->c_cflag |= HUPCL|CLOCAL|CREAD|TAUTOFLOW|CS8;
ios->c_lflag |= NOFLSH;
ios->c_lflag &= ~(ICANON|TOSTOP|ECHO|ECHOE|ECHOK|ECHONL|IEXTEN|ISIG);
ios->c_iflag &= ~(IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|ISTRIP
|INLCR|IGNCR|ICRNL|IXON|IXOFF);
ios->c_oflag &= ~OPOST;
ios->c_cc[VMIN] = vmin;
ios->c_cc[VTIME] = 0;
}
int
tty_nonblock(int tty, int nonblock) {
int old, new;
old = fcntl(tty, F_GETFL, 0);
if (old == -1) {
perror("fcntl(F_GETFL)");
exit(1);
}
if (nonblock)
new = old|O_NONBLOCK;
else
new = old & ~O_NONBLOCK;
if (new != old) {
if (fcntl(tty, F_SETFL, new) == -1) {
perror("fcntl(F_SETFL)");
exit(1);
}
}
return ((old & O_NONBLOCK) != 0);
}
void *
safe_malloc(size_t size) {
void *ret = malloc(size);
if (!ret) {
perror("malloc");
exit(1);
}
return (ret);
}
void *
safe_calloc(size_t n, size_t size) {
void *ret = calloc(n, size);
if (!ret) {
perror("calloc");
exit(1);
}
return (ret);
}
void *
safe_realloc(void *ptr, size_t size) {
void *ret = realloc(ptr, size);
if (!ret) {
perror("realloc");
exit(1);
}
return (ret);
}
char *
safe_strdup(const char *str) {
char *new = strdup(str);
if (new == NULL) {
perror("strdup");
exit(1);
}
return (new);
}
#ifndef isnumber
/*
* from libvixutil.a (14may94 version)
*/
int
isnumber(const char *s) {
char ch;
int n;
n = 0;
while (ch = *s++) {
n++;
if (!isdigit(ch))
return (0);
}
return (n != 0);
}
#endif
#ifdef NEED_INET_ATON
int inet_aton(const char *cp, struct in_addr *addr) {
u_int32_t v;
if ((v = inet_addr(cp)) > 0) {
addr->s_addr = v;
return (1);
}
return (0);
}
#endif
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