🚀 go-pugleaf

Index:	lib/libc/net/rcmd.c 4.3BSD

Description:
	"rcmd" assumes that ((char *)NULL + 1) == (char *)1.  This
	may happen to be true on both machines, but it is not guaranteed
	to be true.
Repeat-By:
	Read the code, preferably with air-sickness bag handy.
Fix:
*** /arch/4.3/usr/src/lib/libc/net/rcmd.c	Tue May  6 14:35:22 1986
--- rcmd.c	Wed Jan 14 13:19:38 1987
***************
*** 270,275 ****
--- 270,276 ----
  {
  	static char ldomain[MAXHOSTNAMELEN + 1];
  	static char *domainp = NULL;
+ 	static int nodomain = 0;
  	register char *cp;
  
  	if (len == -1)
***************
*** 280,285 ****
--- 281,288 ----
  		return(1);
  	if (*(lhost + len) != '\0')
  		return(0);
+ 	if (nodomain)
+ 		return(0);
  	if (!domainp) {
  		if (gethostname(ldomain, sizeof(ldomain)) == -1) {
  			domainp = (char *)1;
***************
*** 286,293 ****
  			return(0);
  		}
  		ldomain[MAXHOSTNAMELEN] = NULL;
! 		if ((domainp = index(ldomain, '.') + 1) == (char *)1)
  			return(0);
  		cp = domainp;
  		while (*cp) {
  			*cp = isupper(*cp) ? tolower(*cp) : *cp;
--- 289,299 ----
  			return(0);
  		}
  		ldomain[MAXHOSTNAMELEN] = NULL;
! 		if ((domainp = index(ldomain, '.')) == (char *)NULL) {
! 			nodomain = 1;
  			return(0);
+ 		}
+ 		domainp++;
  		cp = domainp;
  		while (*cp) {
  			*cp = isupper(*cp) ? tolower(*cp) : *cp;
***************
*** 294,300 ****
  			cp++;
  		}
  	}
- 	if (domainp == (char *)1)
- 		return(0);
  	return(!strcmp(domainp, rhost + len +1));
  }
--- 300,304 ----