2 * Misc routines that are used by tcpd and by tcpdchk.
4 * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
6 * $FreeBSD: src/contrib/tcp_wrappers/misc.c,v 1.2 2000/02/03 10:26:58 shin Exp $
10 #include <sys/param.h>
11 #include <netinet/in.h>
12 #include <arpa/inet.h>
21 #define INADDR_NONE (-1) /* XXX should be 0xffffffff */
24 /* xgets - fgets() with backslash-newline stripping */
26 char *xgets(ptr, len, fp)
34 while (len > 1 && fgets(ptr, len, fp)) {
36 if (got >= 1 && ptr[got - 1] == '\n') {
38 if (got >= 2 && ptr[got - 2] == '\\') {
48 return (ptr > start ? start : 0);
51 /* split_at - break string at delimiter or return NULL */
53 char *split_at(string, delimiter)
62 for (cp = string; cp && *cp; cp++) {
71 if (bracket == 0 && *cp == delimiter) {
80 if ((cp = strchr(string, delimiter)) != 0)
86 /* dot_quad_addr - convert dotted quad to internal form */
88 unsigned long dot_quad_addr(str)
95 /* Count the number of runs of non-dot characters. */
100 } else if (in_run == 0) {
106 return (runs == 4 ? inet_addr(str) : INADDR_NONE);