BIND 10 trac2414, updated. 4838e909a1458198896cd2911488b2d3d442952f [2414] {first, last}AddrInPrefix not handles invalid prefix lengths

[BIND 10 source code commits]

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       via  4838e909a1458198896cd2911488b2d3d442952f (commit)
      from  fd94c6a10376330c5e87d9b618c422b9f9832708 (commit)

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- Log -----------------------------------------------------------------
commit 4838e909a1458198896cd2911488b2d3d442952f
Author: Tomek Mrugalski <tomasz at isc.org>
Date:   Thu Nov 1 18:34:17 2012 +0100

    [2414] {first,last}AddrInPrefix not handles invalid prefix lengths

-----------------------------------------------------------------------

Summary of changes:
 src/lib/dhcp/addr_utilities.cc |   12 ++++++++++++
 1 file changed, 12 insertions(+)

-----------------------------------------------------------------------
diff --git a/src/lib/dhcp/addr_utilities.cc b/src/lib/dhcp/addr_utilities.cc
index de1e8b4..5ecb4dd 100644
--- a/src/lib/dhcp/addr_utilities.cc
+++ b/src/lib/dhcp/addr_utilities.cc
@@ -162,8 +162,14 @@ namespace dhcp {
 isc::asiolink::IOAddress firstAddrInPrefix(const isc::asiolink::IOAddress& prefix,
                                             uint8_t len) {
     if (prefix.getFamily() == AF_INET) {
+        if (len>32) {
+            isc_throw(BadValue, "IPv4 prefix length too large:" << len);
+        }
         return firstAddrInPrefix4(prefix, len);
     } else {
+        if (len>128) {
+            isc_throw(BadValue, "IPv6 prefix length too large:" << len);
+        }
         return firstAddrInPrefix6(prefix, len);
     }
 }
@@ -171,8 +177,14 @@ isc::asiolink::IOAddress firstAddrInPrefix(const isc::asiolink::IOAddress& prefi
 isc::asiolink::IOAddress lastAddrInPrefix(const isc::asiolink::IOAddress& prefix,
                                            uint8_t len) {
     if (prefix.getFamily() == AF_INET) {
+        if (len>32) {
+            isc_throw(BadValue, "IPv4 prefix length too large:" << len);
+        }
         return lastAddrInPrefix4(prefix, len);
     } else {
+        if (len>128) {
+            isc_throw(BadValue, "IPv6 prefix length too large:" << len);
+        }
         return lastAddrInPrefix6(prefix, len);
     }
 }