Nexus: Clean up supplicant events, protocol, and continue plumbing

    - Create SupplicantEvent classes for events
    - New SupplicantEventFactory for creating events
    - Extract Controller -> NetworkManager callbacks into IControllerHandler
    - Move ScanResult handling from Supplicant -> WifiController
    - Plumb more 'onConnected()' code
    - Instead of re-creating NetworkList every-time, merge in
      new entries
    - Extract SupplicantListener -> Supplicant callbacks into
      ISupplicantEventHandler
    - Move SupplicantListener callback handling to WifiController
    - Add unlocked version of lookupNetwork()
    - Save supplicant config after setting a WifiNetwork variable
    - Move property registration from WifiNetwork -> Supplicant
    - Change wifi enable broadcast messages
    - Add 3 new events: 'onAssociating', 'onAssociated', 'onConnectionTimeout'
    - Add support for handling KeyManagement

Signed-off-by: San Mehat <san@google.com>
diff --git a/nexus/SupplicantAssociatingEvent.cpp b/nexus/SupplicantAssociatingEvent.cpp
new file mode 100644
index 0000000..00a85b6
--- /dev/null
+++ b/nexus/SupplicantAssociatingEvent.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+
+#define LOG_TAG "SupplicantAssociatingEvent"
+#include <cutils/log.h>
+
+#include "SupplicantAssociatingEvent.h"
+
+SupplicantAssociatingEvent::SupplicantAssociatingEvent(int level, char *event,
+                                                     size_t len) :
+                           SupplicantEvent(SupplicantEvent::EVENT_ASSOCIATING,
+                                           level) {
+    char *p = event;
+
+    mBssid = NULL;
+    mSsid = NULL;
+
+    // SSID 'default' 
+    // OR
+    // "00:13:46:40:40:aa (SSID='default' freq=2437 MHz)"
+
+    if (strncmp(event, "SSID", 4)) {
+        mBssid = (char *) malloc(18);
+        strncpy(mBssid, p, 17);
+        mBssid[17] = '\0';
+        p += 25;
+
+        // "00:13:46:40:40:aa (SSID='default' freq=2437 MHz)"
+        //                           ^
+        //                           p
+        char *q = index(p, '\'');
+        if (!q) {
+            LOGE("Unable to decode SSID (p = {%s})\n", p);
+            return;
+        }
+        mSsid = (char *) malloc((q - p) +1);
+        strncpy(mSsid, p, q-p);
+        mSsid[q-p] = '\0';
+
+        p = q + 7;
+    
+        // "00:13:46:40:40:aa (SSID='default' freq=2437 MHz)"
+        //                                         ^
+        //                                         p
+        if (!(q = index(p, ' '))) {
+            LOGE("Unable to decode frequency\n");
+            return;
+        }
+        *q = '\0';
+        mFreq = atoi(p);
+    } else {
+        p+= 6;
+
+        // SSID 'default' 
+        //       ^
+        //       p
+
+        char *q = index(p, '\'');
+        if (!q) {
+            LOGE("Unable to decode SSID (p = {%s})\n", p);
+            return;
+        }
+        mSsid = (char *) malloc((q - p) +1);
+        strncpy(mSsid, p, q-p);
+        mSsid[q-p] = '\0';
+    }
+}
+
+SupplicantAssociatingEvent::SupplicantAssociatingEvent(const char *bssid, 
+                                                     const char *ssid,
+                                                     int freq) :
+                           SupplicantEvent(SupplicantEvent::EVENT_ASSOCIATING, -1) {
+    mBssid = strdup(bssid);
+    mSsid= strdup(ssid);
+    mFreq = freq;
+}
+
+SupplicantAssociatingEvent::~SupplicantAssociatingEvent() {
+    if (mBssid)
+        free(mBssid);
+    if (mSsid)
+        free(mSsid);
+}
+