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Avoid stomping on static memory by repeatly calling gethostbyname().

This commit is contained in:
pk 1994-06-01 19:32:43 +00:00
parent 350b02a45f
commit 816feb25c5
1 changed files with 10 additions and 6 deletions
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16
lib/libc/net/rcmd.c
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@ -33,7 +33,7 @@
#if defined(LIBC_SCCS) && !defined(lint)
/* from: static char sccsid[] = "@(#)rcmd.c 8.3 (Berkeley) 3/26/94"; */
static char *rcsid = "$Id: rcmd.c,v 1.8 1994/06/01 19:23:59 pk Exp $";
static char *rcsid = "$Id: rcmd.c,v 1.9 1994/06/01 19:32:43 pk Exp $";
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
@ -243,16 +243,20 @@ ruserok(rhost, superuser, ruser, luser)
int superuser;
{
struct hostent *hp;
u_long addr;
char **ap;
int i;
#define MAXADDRS 35
u_long addrs[MAXADDRS + 1];
if ((hp = gethostbyname(rhost)) == NULL)
return (-1);
for (ap = hp->h_addr_list; *ap; ++ap) {
bcopy(*ap, &addr, sizeof(addr));
if (iruserok(addr, superuser, ruser, luser) == 0)
for (i = 0, ap = hp->h_addr_list; *ap && i < MAXADDRS; ++ap, ++i)
bcopy(*ap, &addrs[i], sizeof(addrs[i]));
addrs[i] = 0;
for (i = 0; i < MAXADDRS && addrs[i]; i++)
if (iruserok(addrs[i], superuser, ruser, luser) == 0)
return (0);
}
return (-1);
}