wlan_bearer/wlanengine/wlan_common/wlanengine_common_3.1/src/core_frame_dot11_ie.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wlan_bearer/wlanengine/wlan_common/wlanengine_common_3.1/src/core_frame_dot11_ie.cpp Tue Feb 02 02:03:13 2010 +0200
@@ -0,0 +1,191 @@
+/*
+* Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Class parsing 802.11 IEs.
+*
+*/
+
+
+#include "genscaninfo.h"
+#include "core_frame_dot11_ie.h"
+#include "core_tools.h"
+#include "core_tools_parser.h"
+#include "am_debug.h"
+
+// ======== MEMBER FUNCTIONS ========
+
+const u8_t CORE_FRAME_DOT11_IE_LENGTH = 2;
+const u8_t CORE_FRAME_DOT11_IE_MIN_LENGTH_FIELD = 0;
+
+const u8_t CORE_FRAME_DOT11_IE_ELEMENT_INDEX = 0;
+const u8_t CORE_FRAME_DOT11_IE_LENGTH_INDEX = 1;
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+core_frame_dot11_ie_c* core_frame_dot11_ie_c::instance(
+ u16_t data_length,
+ const u8_t* data,
+ bool_t is_copied )
+ {
+ if ( data_length < CORE_FRAME_DOT11_IE_LENGTH )
+ {
+ DEBUG2( "core_frame_dot11_ie_c::instance() - IE data length is too short, actual length %u, minimum length %u",
+ data_length, CORE_FRAME_DOT11_IE_LENGTH );
+
+ return NULL;
+ }
+
+ u8_t* buffer = const_cast<u8_t*>( data );
+ u16_t buffer_length( 0 );
+
+ if ( is_copied )
+ {
+ DEBUG( "core_frame_dot11_ie_c::instance() - copying IE data" );
+
+ buffer_length = data_length;
+ buffer = new u8_t[buffer_length];
+
+ if ( !buffer )
+ {
+ DEBUG( "core_frame_dot11_ie_c::instance() - not able to allocate buffer for copying" );
+
+ return NULL;
+ }
+
+ core_tools_c::copy(
+ buffer,
+ data,
+ buffer_length );
+ }
+
+ core_frame_dot11_ie_c* instance = new core_frame_dot11_ie_c(
+ data_length,
+ buffer,
+ buffer_length );
+ if ( !instance )
+ {
+ DEBUG( "core_frame_dot11_ie_c::instance() - unable to create an instance" );
+
+ if ( is_copied )
+ {
+ delete[] buffer;
+ }
+
+ return NULL;
+ }
+
+ if ( instance->length() + CORE_FRAME_DOT11_IE_HEADER_LENGTH > data_length )
+ {
+ DEBUG( "core_frame_dot11_ie_c::instance() - length field is too big" );
+ DEBUG2( "core_frame_dot11_ie_c::instance() - IE size is %u, IE length field is %u",
+ data_length, instance->length() );
+ delete instance;
+
+ return NULL;
+ }
+
+ return instance;
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+core_frame_dot11_ie_c::~core_frame_dot11_ie_c()
+ {
+ /**
+ * If maximum IE length has been defined, we have allocated
+ * the frame buffer ourselves.
+ */
+ if ( max_data_length_m )
+ {
+ delete[] data_m;
+ }
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+u8_t core_frame_dot11_ie_c::element_id() const
+ {
+ return data_m[CORE_FRAME_DOT11_IE_ELEMENT_INDEX];
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+u8_t core_frame_dot11_ie_c::length() const
+ {
+ return data_m[CORE_FRAME_DOT11_IE_LENGTH_INDEX];
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+u16_t core_frame_dot11_ie_c::data_length() const
+ {
+ return length() + CORE_FRAME_DOT11_IE_HEADER_LENGTH;
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+const u8_t* core_frame_dot11_ie_c::data() const
+ {
+ return data_m;
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+void core_frame_dot11_ie_c::generate(
+ u8_t element_id )
+ {
+ ASSERT( !data_length_m );
+ ASSERT( max_data_length_m );
+
+ data_length_m = 0;
+
+ // Element ID
+ data_m[data_length_m++] = element_id;
+
+ // Length
+ data_m[data_length_m++] = CORE_FRAME_DOT11_IE_MIN_LENGTH_FIELD;
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+void core_frame_dot11_ie_c::set_length(
+ u8_t length )
+ {
+ data_m[CORE_FRAME_DOT11_IE_LENGTH_INDEX] = length - CORE_FRAME_DOT11_IE_HEADER_LENGTH;
+ }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+core_frame_dot11_ie_c::core_frame_dot11_ie_c(
+ u16_t data_length,
+ const u8_t* data,
+ u16_t max_data_length ) :
+ data_length_m( data_length ),
+ data_m( NULL ),
+ max_data_length_m( max_data_length )
+ {
+ /**
+ * The reason the const is discarded is that the same pointer
+ * is used when we have allocated the frame buffer ourselves.
+ */
+ data_m = const_cast<u8_t*>( data );
+ }