nexus: Rollup update for nexus

nexus: Change field separator from : to ' '

Signed-off-by: San Mehat <san@google.com>

nexus: Add some prototypes for stuff to come

Signed-off-by: San Mehat <san@google.com>

nexus: Add some TODOs

Signed-off-by: San Mehat <san@google.com>

libsysutils: Put a proper token parser into the FrameworkListener which
supports minimal \ escapes and quotes

Signed-off-by: San Mehat <san@google.com>

nexus: Fix a lot of bugs

Signed-off-by: San Mehat <san@google.com>

libsysutils: Remove some debugging
Signed-off-by: San Mehat <san@google.com>

nexus: Send broadcasts for supplicant state changes

Signed-off-by: San Mehat <san@google.com>

nexus: Plumb DHCP listener state changes to NetworkManager

Signed-off-by: San Mehat <san@google.com>

nexus: Make the SupplicantState strings more parsable

Signed-off-by: San Mehat <san@google.com>

nexus: Broadcast a message when dhcp state changes.

Signed-off-by: San Mehat <san@google.com>

nexus: Add a few new response codes

Signed-off-by: San Mehat <san@google.com>

nexus: Rename ErrorCode -> ResponseCode

Signed-off-by: San Mehat <san@google.com>

nexus: Add DHCP event broadcasting. Also adds the framework for
tracking supplicant 'searching-for-AP' state

Signed-off-by: San Mehat <san@google.com>

nexus: REmove WifiScanner

Signed-off-by: San Mehat <san@google.com>

nexus: Change the way scanning works. scanmode can now be selected
independantly of triggering a scan. Also adds rxfilter support

Signed-off-by: San Mehat <san@google.com>

nexus: Add support for configuring bluetooth coexistence scanning and modes

Signed-off-by: San Mehat <san@google.com>

nexus: use case insensitive match for property names

Signed-off-by: San Mehat <san@google.com>

nexus: Rollup of a bunch of stuff:
    - 'list' command now takes an argument to match against
    - InterfaceConfig has been moved into the Controller base (for now)
    - DhcpClient now has some rudimentry locking
    - process 'ADDRINFO' messages from dhcpcd
    - Drop tertiary dns

Signed-off-by: San Mehat <san@google.com>

nexus: Clean up some of the supplicant variable parsing and add 'wifi.current'

Signed-off-by: San Mehat <san@google.com>

nexus: Add driver-stop/start, initial suspend support

Signed-off-by: San Mehat <san@google.com>

nexus: Add Controller suspend/resume callbacks, as well as locking

Signed-off-by: San Mehat <san@google.com>

nexus: Make ARP probing configurable for DhcpClient

Signed-off-by: San Mehat <san@google.com>

nexus: Add linkspeed / rssi retrieval

Signed-off-by: San Mehat <san@google.com>

nexus: Add WifiStatusPoller to track RSSI/linkspeed when associated

Signed-off-by: San Mehat <san@google.com>

nexus: Disable some debugging and add 'wifi.netcount' property

Signed-off-by: San Mehat <san@google.com>

nexus: Replace the hackish property system with something more flexible with namespaces

Signed-off-by: San Mehat <san@google.com>

libsysutils: Fix a few bugs in SocketListener

Signed-off-by: San Mehat <san@google.com>

nexus: PropertyManager: Add array support

Signed-off-by: San Mehat <san@google.com>

nexus: Clean up properties
Signed-off-by: San Mehat <san@google.com>

nexus: WifiController: Change name of 'CurrentNetwork' property

Signed-off-by: San Mehat <san@google.com>
diff --git a/nexus/TiwlanWifiController.cpp b/nexus/TiwlanWifiController.cpp
index 61535c3..016c790 100644
--- a/nexus/TiwlanWifiController.cpp
+++ b/nexus/TiwlanWifiController.cpp
@@ -51,6 +51,7 @@
 int TiwlanWifiController::powerDown() {
     if (mEventListener) {
         delete mEventListener;
+        shutdown(mListenerSock, SHUT_RDWR);
         close(mListenerSock);
         mListenerSock = -1;
         mEventListener = NULL;
@@ -77,7 +78,8 @@
                 LOGD("Firmware loaded OK");
 
                 if (startDriverEventListener()) {
-                    LOGW("Failed to start driver event listener");
+                    LOGW("Failed to start driver event listener (%s)",
+                         strerror(errno));
                 }
 
                 return 0;
@@ -95,32 +97,48 @@
 
 int TiwlanWifiController::startDriverEventListener() {
     struct sockaddr_in addr;
-    int s;
 
-    if ((s = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
+    if (mListenerSock != -1) {
+        LOGE("Listener already started!");
+        errno = EBUSY;
         return -1;
+    }
+
+    if ((mListenerSock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
+        LOGE("socket failed (%s)", strerror(errno));
+        return -1;
+    }
 
     memset(&addr, 0, sizeof(addr));
     addr.sin_family = AF_INET;
     addr.sin_addr.s_addr = htonl(INADDR_ANY);
     addr.sin_port = htons(TI_DRIVER_MSG_PORT);
 
-    if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-        close(s);
-        return -1;
+    if (bind(mListenerSock,
+             (struct sockaddr *) &addr,
+             sizeof(addr)) < 0) {
+        LOGE("bind failed (%s)", strerror(errno));
+        goto out_err;
     }
 
-    mEventListener = new TiwlanEventListener(s);
+    mEventListener = new TiwlanEventListener(mListenerSock);
 
     if (mEventListener->startListener()) {
         LOGE("Error starting driver listener (%s)", strerror(errno));
+        goto out_err;
+    }
+    return 0;
+out_err:
+    if (mEventListener) {
         delete mEventListener;
         mEventListener = NULL;
-        close(s);
-        return -1;
     }
-    mListenerSock = s;
-    return 0;
+    if (mListenerSock != -1) {
+        shutdown(mListenerSock, SHUT_RDWR);
+        close(mListenerSock);
+        mListenerSock = -1;
+    }
+    return -1;
 }
 
 bool TiwlanWifiController::isFirmwareLoaded() {