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1999-03-05  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* resolv/inet_addr.c (inet_aton): Don't allow componets >
	255. Patch by Bruno Haible <haible@ilog.fr> [PR libc/1010].
This commit is contained in:
Ulrich Drepper
1999-03-05 14:32:11 +00:00
parent 346af50a08
commit ad792af765
2 changed files with 9 additions and 3 deletions
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7
resolv/inet_addr.c
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@ -187,19 +187,20 @@ inet_aton(cp, addr)
break;
case 2: /* a.b -- 8.24 bits */
if (val > 0xffffff)
if (parts[0] > 0xff || val > 0xffffff)
goto ret_0;
val |= parts[0] << 24;
break;
case 3: /* a.b.c -- 8.8.16 bits */
if (val > 0xffff)
if (parts[0] > 0xff || parts[1] > 0xff || val > 0xffff)
goto ret_0;
val |= (parts[0] << 24) | (parts[1] << 16);
break;
case 4: /* a.b.c.d -- 8.8.8.8 bits */
if (val > 0xff)
if (parts[0] > 0xff || parts[1] > 0xff || parts[2] > 0xff
|| val > 0xff)
goto ret_0;
val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
break;