NetBSD/lib/libwrap/misc.c

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/* $NetBSD: misc.c,v 1.7 1999/08/31 13:58:58 itojun Exp $ */
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/*
* Misc routines that are used by tcpd and by tcpdchk.
*
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* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
*/
#include <sys/cdefs.h>
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#ifndef lint
#if 0
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static char sccsic[] = "@(#) misc.c 1.2 96/02/11 17:01:29";
#else
__RCSID("$NetBSD: misc.c,v 1.7 1999/08/31 13:58:58 itojun Exp $");
#endif
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#endif
#include <sys/types.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <string.h>
#include "tcpd.h"
#ifndef INADDR_NONE
#define INADDR_NONE (-1) /* XXX should be 0xffffffff */
#endif
/* xgets - fgets() with backslash-newline stripping */
char *xgets(ptr, len, fp)
char *ptr;
int len;
FILE *fp;
{
int got;
char *start = ptr;
while (fgets(ptr, len, fp)) {
got = strlen(ptr);
if (got >= 1 && ptr[got - 1] == '\n') {
tcpd_context.line++;
if (got >= 2 && ptr[got - 2] == '\\') {
got -= 2;
} else {
return (start);
}
}
ptr += got;
len -= got;
ptr[0] = 0;
}
return (ptr > start ? start : 0);
}
/* split_at - break string at delimiter or return NULL */
char *split_at(string, delimiter)
char *string;
int delimiter;
{
#if 0
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char *cp;
if ((cp = strchr(string, delimiter)) != 0)
*cp++ = 0;
return (cp);
#else
char *cp;
int bracket;
bracket = 0;
for (cp = string; cp && *cp; cp++) {
switch (*cp) {
case '[':
bracket++;
break;
case ']':
bracket--;
break;
default:
if (bracket == 0 && *cp == delimiter) {
*cp++ = 0;
return cp;
}
break;
}
}
return NULL;
#endif
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}
/* dot_quad_addr - convert dotted quad to internal form */
int dot_quad_addr(str, addr)
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char *str;
unsigned long *addr;
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{
struct in_addr a;
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if (!inet_aton(str, &a))
return -1;
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if (addr)
*addr = a.s_addr;
return 0;
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}