pppd: Fix man page description of case when remote IP address isn't known

[ppp.git] / modules / deflate.c

diff --git a/modules/deflate.c b/modules/deflate.c
index f65273ca96713208a5b5f0fd37de2600faa8678c..c896846db6718a43d513daffd2f8f9fb6ce9f2ec 100644 (file)
--- a/modules/deflate.c
+++ b/modules/deflate.c
@@ -4,30 +4,38 @@
  * This version is for use with STREAMS under SunOS 4.x, Solaris 2,
  * SVR4, OSF/1 and AIX 4.x.
  *
- * Copyright (c) 1994 The Australian National University.
- * All rights reserved.
+ * Copyright (c) 1994 Paul Mackerras. All rights reserved.
  *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation is hereby granted, provided that the above copyright
- * notice appears in all copies.  This software is provided without any
- * warranty, express or implied. The Australian National University
- * makes no representations about the suitability of this software for
- * any purpose.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
  *
- * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
- * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
- * THE AUSTRALIAN NATIONAL UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
  *
- * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
- * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
- * OR MODIFICATIONS.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
  *
- * $Id: deflate.c,v 1.8 1998/03/24 23:52:31 paulus Exp $
+ * 3. The name(s) of the authors of this software must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission.
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by Paul Mackerras
+ *     <paulus@samba.org>".
+ *
+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * $Id: deflate.c,v 1.12 2004/01/17 05:47:55 carlsonj Exp $
  */
 
 #ifdef AIX4
@@ -48,6 +56,10 @@
 #include "../common/zlib.h"
 #endif
 
+#ifdef SOL2
+#include <sys/sunddi.h>
+#endif
+
 #if DO_DEFLATE
 
 #define DEFLATE_DEBUG  1
@@ -202,7 +214,11 @@ z_comp_alloc(options, opt_len)
        || options[3] != DEFLATE_CHK_SEQUENCE)
        return NULL;
     w_size = DEFLATE_SIZE(options[2]);
-    if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
+    /*
+     * N.B. the 9 below should be DEFLATE_MIN_SIZE (8), but using
+     * 8 will cause kernel crashes because of a bug in zlib.
+     */
+    if (w_size < 9 || w_size > DEFLATE_MAX_SIZE)
        return NULL;
 
 
@@ -454,7 +470,11 @@ z_decomp_alloc(options, opt_len)
        || options[3] != DEFLATE_CHK_SEQUENCE)
        return NULL;
     w_size = DEFLATE_SIZE(options[2]);
-    if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
+    /*
+     * N.B. the 9 below should be DEFLATE_MIN_SIZE (8), but using
+     * 8 will cause kernel crashes because of a bug in zlib.
+     */
+    if (w_size < 9 || w_size > DEFLATE_MAX_SIZE)
        return NULL;
 
 #ifdef __osf__
@@ -587,6 +607,7 @@ z_decompress(arg, mi, mop)
     mo->b_rptr += state->hdrlen;
     mo->b_wptr = wptr = mo->b_rptr;
     ospace = DECOMP_CHUNK;
+    olen = 0;
 
     /*
      * Fill in the first part of the PPP header.  The protocol field
@@ -609,7 +630,6 @@ z_decompress(arg, mi, mop)
     state->strm.next_out = wptr + 3;
     state->strm.avail_out = 1;
     decode_proto = 1;
-    olen = PPP_HDRLEN;
 
     /*
      * Call inflate, supplying more input or output as needed.
@@ -643,7 +663,6 @@ z_decompress(arg, mi, mop)
                    wptr[2] = wptr[3];
                    --state->strm.next_out;
                    ++state->strm.avail_out;
-                   --olen;
                }
                decode_proto = 0;
            } else {