[878] Support for IA and IAADDR options and suboptions added.

 - IA support (Option6IA class) added.
 - Support for suboptions in IA option.
 - IAADDR support (Option6IAAddr class) added.
 - Initial tests added for new classes added.

1 files changed, 75 insertions, 0 deletions

diff --git a/src/lib/dhcp/option6_ia.h b/src/lib/dhcp/option6_ia.h
new file mode 100644
index 0000000000..20667e1b09
--- /dev/null
+++ b/src/lib/dhcp/option6_ia.h
@@ -0,0 +1,75 @@
+// Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// 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.
+
+#ifndef OPTION_IA_H_
+#define OPTION_IA_H_
+
+#include "option.h"
+
+namespace isc {
+namespace dhcp {
+
+class Option6IA: public Option {
+        
+public:
+    // ctor, used for options constructed, usually during transmission
+    Option6IA(Universe u, unsigned short type, unsigned int iaid); 
+
+    // ctor, used for received options
+    // boost::shared_array allows sharing a buffer, but it requires that 
+    // different instances share pointer to the whole array, not point
+    // to different elements in shared array. Therefore we need to share
+    // pointer to the whole array and remember offset where data for
+    // this option begins
+    Option6IA(Universe u, unsigned short type, boost::shared_array<char> buf, 
+              unsigned int buf_len,
+              unsigned int offset, 
+              unsigned int len);
+    
+    // writes option in wire-format to buf, returns pointer to first unused 
+    // byte after stored option
+    unsigned int
+    pack(boost::shared_array<char> buf, unsigned int buf_len, 
+         unsigned int offset);
+
+    // parses received buffer, returns offset to the first unused byte after
+    // parsed option
+    virtual unsigned int 
+    unpack(boost::shared_array<char> buf, 
+           unsigned int buf_len,
+           unsigned int offset, 
+           unsigned int parse_len);
+
+    virtual std::string toText();
+
+    void setT1(unsigned int t1) { t1_=t1; }
+    void setT2(unsigned int t2) { t2_=t2; }
+
+    unsigned int getIAID() { return iaid_; }
+    unsigned int getT1()   { return t1_; }
+    unsigned int getT2()   { return t2_; }
+
+    // returns data length (data length + DHCPv4/DHCPv6 option header)
+    virtual unsigned short len();
+
+protected:
+    unsigned int iaid_;
+    unsigned int t1_;
+    unsigned int t2_;
+};
+
+} // isc::dhcp namespace
+} // isc namespace
+    
+#endif /* OPTION_IA_H_ */