Use fgetln(3) instead of fgets(3) so we can easily recognize lines

that are too long and ignore them instead of corrupting later entries.

1 files changed, 12 insertions, 6 deletions

diff --git a/src/lib/libc/net/gethostnamadr.c b/src/lib/libc/net/gethostnamadr.c
index 7fb148bf52..7321225863 100644
--- a/src/lib/libc/net/gethostnamadr.c
+++ b/src/lib/libc/net/gethostnamadr.c
@@ -52,7 +52,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: gethostnamadr.c,v 1.29 1998/01/20 18:28:33 deraadt Exp $";
+static char rcsid[] = "$OpenBSD: gethostnamadr.c,v 1.30 1998/03/16 05:06:55 millert Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -721,22 +721,28 @@ _gethtent()
 {
         char *p;
         register char *cp, **q;
-        int af, len;
+        int af;
+        size_t len;
 
         if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) {
                 h_errno = NETDB_INTERNAL;
                 return (NULL);
         }
  again:
-        if (!(p = fgets(hostbuf, sizeof hostbuf, hostf))) {
+        if ((p = fgetln(hostf, &len)) == NULL) {
                 h_errno = HOST_NOT_FOUND;
                 return (NULL);
         }
-        if (*p == '#')
+        if (p[len-1] == '\n')
+                len--;
+        if (len >= sizeof(hostbuf) || len == 0)
                 goto again;
-        if (!(cp = strpbrk(p, "#\n")))
+        p = memcpy(hostbuf, p, len);
+        hostbuf[len] = '\0';
+        if (*p == '#')
                 goto again;
-        *cp = '\0';
+        if ((cp = strchr(p, '#')))
+                *cp = '\0';
         if (!(cp = strpbrk(p, " \t")))
                 goto again;
         *cp++ = '\0';