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 $
7 * $DragonFly: src/contrib/tcp_wrappers/misc.c,v 1.2 2003/06/17 04:24:06 dillon Exp $
11 static char sccsic[] = "@(#) misc.c 1.2 96/02/11 17:01:29";
14 #include <sys/types.h>
15 #include <sys/param.h>
16 #include <netinet/in.h>
17 #include <arpa/inet.h>
26 #define INADDR_NONE (-1) /* XXX should be 0xffffffff */
29 /* xgets - fgets() with backslash-newline stripping */
31 char *xgets(ptr, len, fp)
39 while (len > 1 && fgets(ptr, len, fp)) {
41 if (got >= 1 && ptr[got - 1] == '\n') {
43 if (got >= 2 && ptr[got - 2] == '\\') {
53 return (ptr > start ? start : 0);
56 /* split_at - break string at delimiter or return NULL */
58 char *split_at(string, delimiter)
67 for (cp = string; cp && *cp; cp++) {
76 if (bracket == 0 && *cp == delimiter) {
85 if ((cp = strchr(string, delimiter)) != 0)
91 /* dot_quad_addr - convert dotted quad to internal form */
93 unsigned long dot_quad_addr(str)
100 /* Count the number of runs of non-dot characters. */
105 } else if (in_run == 0) {
111 return (runs == 4 ? inet_addr(str) : INADDR_NONE);