Commit: c73d9e43a0c98a87222ef0c8749d6abba06c7778 - system-coremmmm (git)

system/corennnnn

Commit MetaInfo

• Revisión: c73d9e43a0c98a87222ef0c8749d6abba06c7778 (tree)
• Tiempo: 2009-05-12 01:01:15
• Autor: Android (Google) Code Review <android-gerrit@goog...>
• Commiter: Android (Google) Code Review

Log Message

Merge changes 1341,1342 into donut

* changes:

libsysutils: Add multiple client support and fix some bugs
nexus: Implement wifi scanner and fix a lot of bugs

Cambiar Resumen

• add: include/sysutils/FrameworkClient.h
• modified: include/sysutils/FrameworkCommand.h
• modified: include/sysutils/FrameworkListener.h
• delete: include/sysutils/FrameworkManager.h
• modified: include/sysutils/NetlinkListener.h
• add: include/sysutils/SocketClient.h
• modified: include/sysutils/SocketListener.h
• modified: libsysutils/Android.mk
• add: libsysutils/src/FrameworkClient.cpp
• modified: libsysutils/src/FrameworkCommand.cpp
• modified: libsysutils/src/FrameworkListener.cpp
• delete: libsysutils/src/FrameworkManager.cpp
• modified: libsysutils/src/NetlinkListener.cpp
• add: libsysutils/src/SocketClient.cpp
• modified: libsysutils/src/SocketListener.cpp
• modified: nexus/Android.mk
• modified: nexus/CommandListener.cpp
• modified: nexus/CommandListener.h
• modified: nexus/NetworkManager.cpp
• modified: nexus/NetworkManager.h
• modified: nexus/NexusCommand.cpp
• modified: nexus/NexusCommand.h
• modified: nexus/ScanResult.h
• modified: nexus/Supplicant.cpp
• modified: nexus/Supplicant.h
• modified: nexus/SupplicantListener.cpp
• modified: nexus/SupplicantListener.h
• modified: nexus/SupplicantState.h
• modified: nexus/TiwlanWifiController.cpp
• modified: nexus/TiwlanWifiController.h
• modified: nexus/WifiController.cpp
• modified: nexus/WifiController.h
• add: nexus/WifiScanner.cpp
• add: nexus/WifiScanner.h
• modified: nexus/main.cpp
• modified: nexus/nexctl.c

Diferencia incremental

--- /dev/null
+++ b/include/sysutils/FrameworkClient.h
@@ -0,0 +1,21 @@
+#ifndef _FRAMEWORK_CLIENT_H
+#define _FRAMEWORK_CLIENT_H
+
+#include "../../../frameworks/base/include/utils/List.h"
+
+#include <pthread.h>
+
+class FrameworkClient {
+    int             mSocket;
+    pthread_mutex_t mWriteMutex;
+
+public:
+    FrameworkClient(int sock);
+    virtual ~FrameworkClient() {}
+
+    int sendMsg(char *msg);
+    int sendMsg(char *msg, char *data);
+};
+
+typedef android::List<FrameworkClient *> FrameworkClientCollection;
+#endif

--- a/include/sysutils/FrameworkCommand.h
+++ b/include/sysutils/FrameworkCommand.h
@@ -18,6 +18,7 @@
 
 #include "../../../frameworks/base/include/utils/List.h"
 
+class SocketClient;
 
 class FrameworkCommand { 
 private:
@@ -28,7 +29,7 @@ public:
     FrameworkCommand(const char *cmd);
     virtual ~FrameworkCommand() { }
 
-    virtual int runCommand(char *data);
+    virtual int runCommand(SocketClient *c, char *data) = 0;
 
     const char *getCommand() { return mCommand; }
 };

--- a/include/sysutils/FrameworkListener.h
+++ b/include/sysutils/FrameworkListener.h
@@ -19,6 +19,8 @@
 #include "SocketListener.h"
 #include "FrameworkCommand.h"
 
+class SocketClient;
+
 class FrameworkListener : public SocketListener {
 private:
     FrameworkCommandCollection *mCommands;
@@ -29,9 +31,9 @@ public:
 
 protected:
     void registerCmd(FrameworkCommand *cmd);
-    virtual bool onDataAvailable(int socket);
+    virtual bool onDataAvailable(SocketClient *c);
 
 private:
-    void dispatchCommand(char *cmd);
+    void dispatchCommand(SocketClient *c, char *cmd);
 };
 #endif

--- a/include/sysutils/FrameworkManager.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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.
- */
-#ifndef _FRAMEWORKMANAGER_H
-#define _FRAMEWORKMANAGER_H
-
-#include <pthread.h>
-
-class FrameworkListener;
-
-class FrameworkManager {
-    int mDoorbell;        // Socket used to accept connections from framework
-    int mFwSock;          // Socket used to communicate with framework
-    const char *mSocketName;
-
-    FrameworkListener *mListener;
-    
-    pthread_mutex_t mWriteMutex;
-
-public:
-    FrameworkManager(FrameworkListener *Listener);
-    virtual ~FrameworkManager() {}
-
-    int run();
-    int sendMsg(char *msg);
-    int sendMsg(char *msg, char *data);
-};
-#endif

--- a/include/sysutils/NetlinkListener.h
+++ b/include/sysutils/NetlinkListener.h
@@ -27,6 +27,6 @@ public:
     NetlinkListener(int socket);
     virtual ~NetlinkListener() {}
 protected:
-    virtual bool onDataAvailable(int socket);
+    virtual bool onDataAvailable(SocketClient *cli);
 };
 #endif

--- /dev/null
+++ b/include/sysutils/SocketClient.h
@@ -0,0 +1,23 @@
+#ifndef _SOCKET_CLIENT_H
+#define _SOCKET_CLIENT_H
+
+#include "../../../frameworks/base/include/utils/List.h"
+
+#include <pthread.h>
+
+class SocketClient {
+    int             mSocket;
+    pthread_mutex_t mWriteMutex;
+
+public:
+    SocketClient(int sock);
+    virtual ~SocketClient() {}
+
+    int getSocket() { return mSocket; }
+
+    int sendMsg(char *msg);
+    int sendMsg(char *msg, char *data);
+};
+
+typedef android::List<SocketClient *> SocketClientCollection;
+#endif

--- a/include/sysutils/SocketListener.h
+++ b/include/sysutils/SocketListener.h
@@ -16,20 +16,35 @@
 #ifndef _SOCKETLISTENER_H
 #define _SOCKETLISTENER_H
 
+#include <pthread.h>
+
+#include <sysutils/SocketClient.h>
+
 class SocketListener {
-    int mSock;
-    int mCsock;
-    int mAcceptClients;
-    const char *mSocketName;
+    int                     mSock;
+    const char              *mSocketName;
+    SocketClientCollection  *mClients;
+    pthread_mutex_t         mClientsLock;
+    bool                    mListen;
+    int                     mCtrlPipe[2];
+    pthread_t               mThread;
 
 public:
-    SocketListener(const char *socketName, bool acceptClients);
-    SocketListener(int socketFd, bool acceptClients);
+    SocketListener(const char *socketNames, bool listen);
+    SocketListener(int socketFd, bool listen);
 
     virtual ~SocketListener() {}
-    virtual int run();
+    int startListener();
+    int stopListener();
+
+    void sendBroadcast(char *msg);
+    void sendBroadcast(char *msg, char *data);
 
 protected:
-    virtual bool onDataAvailable(int socket);
+    virtual bool onDataAvailable(SocketClient *c) = 0;
+
+private:
+    static void *threadStart(void *obj);
+    void runListener();
 };
 #endif

--- a/libsysutils/Android.mk
+++ b/libsysutils/Android.mk
@@ -3,12 +3,12 @@ LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:=                             \
-                  src/FrameworkManager.cpp    \
                   src/SocketListener.cpp      \
                   src/FrameworkListener.cpp   \
                   src/NetlinkListener.cpp     \
                   src/NetlinkEvent.cpp        \
                   src/FrameworkCommand.cpp    \
+                  src/SocketClient.cpp        \
 
 LOCAL_MODULE:= libsysutils
 

--- /dev/null
+++ b/libsysutils/src/FrameworkClient.cpp
@@ -0,0 +1,41 @@
+#include <alloca.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <pthread.h>
+
+#define LOG_TAG "FrameworkClient"
+#include <cutils/log.h>
+
+#include <sysutils/FrameworkClient.h>
+
+FrameworkClient::FrameworkClient(int socket) {
+    mSocket = socket;
+    pthread_mutex_init(&mWriteMutex, NULL);
+}
+
+int FrameworkClient::sendMsg(char *msg) {
+    LOGD("FrameworkClient::sendMsg(%s)", msg);
+    if (mSocket < 0) {
+        errno = EHOSTUNREACH;
+        return -1;
+    }
+
+    pthread_mutex_lock(&mWriteMutex);
+    if (write(mSocket, msg, strlen(msg) +1) < 0) {
+        LOGW("Unable to send msg '%s' (%s)", msg, strerror(errno));
+    }
+    pthread_mutex_unlock(&mWriteMutex);
+    return 0;
+}
+
+int FrameworkClient::sendMsg(char *msg, char *data) {
+    char *buffer = (char *) alloca(strlen(msg) + strlen(data) + 1);
+    if (!buffer) {
+        errno = -ENOMEM;
+        return -1;
+    }
+    strcpy(buffer, msg);
+    strcat(buffer, data);
+    return sendMsg(buffer);
+}
+

--- a/libsysutils/src/FrameworkCommand.cpp
+++ b/libsysutils/src/FrameworkCommand.cpp
@@ -25,7 +25,7 @@ FrameworkCommand::FrameworkCommand(const char *cmd) {
     mCommand = cmd;
 }
 
-int FrameworkCommand::runCommand(char *data) {
+int FrameworkCommand::runCommand(SocketClient *c, char *data) {
     LOGW("Command %s has no run handler!", getCommand());
     errno = ENOSYS;
     return -1;

--- a/libsysutils/src/FrameworkListener.cpp
+++ b/libsysutils/src/FrameworkListener.cpp
@@ -22,17 +22,18 @@
 
 #include <sysutils/FrameworkListener.h>
 #include <sysutils/FrameworkCommand.h>
+#include <sysutils/SocketClient.h>
 
 FrameworkListener::FrameworkListener(const char *socketName) :
                             SocketListener(socketName, true) {
     mCommands = new FrameworkCommandCollection();
 }
 
-bool FrameworkListener::onDataAvailable(int socket) {
+bool FrameworkListener::onDataAvailable(SocketClient *c) {
     char buffer[101];
     int len;
 
-    if ((len = read(socket, buffer, sizeof(buffer) -1)) < 0) {
+    if ((len = read(c->getSocket(), buffer, sizeof(buffer) -1)) < 0) {
         LOGE("read() failed (%s)", strerror(errno));
         return errno;
     } else if (!len) {
@@ -47,7 +48,7 @@ bool FrameworkListener::onDataAvailable(int socket) {
 
     for (i = 0; i < len; i++) {
         if (buffer[i] == '\0') {
-            dispatchCommand(buffer + start);
+            dispatchCommand(c, buffer + start);
             start = i + 1;
         }
     }
@@ -58,14 +59,22 @@ void FrameworkListener::registerCmd(FrameworkCommand *cmd) {
     mCommands->push_back(cmd);
 }
 
-void FrameworkListener::dispatchCommand(char *cmd) {
+void FrameworkListener::dispatchCommand(SocketClient *cli, char *cmd) {
+
+    char *cm, *last;
+
+    if (!(cm = strtok_r(cmd, ":", &last))) {
+        cli->sendMsg("BAD_MSG");
+        return;
+    }
+
     FrameworkCommandCollection::iterator i;
 
     for (i = mCommands->begin(); i != mCommands->end(); ++i) {
         FrameworkCommand *c = *i;
 
-        if (!strncmp(cmd, c->getCommand(), strlen(c->getCommand()))) {
-            if (c->runCommand(cmd)) {
+        if (!strcmp(cm, c->getCommand())) {
+            if (c->runCommand(cli, cmd)) {
                 LOGW("Handler '%s' error (%s)", c->getCommand(), strerror(errno));
             }
             return;
@@ -73,5 +82,6 @@ void FrameworkListener::dispatchCommand(char *cmd) {
     }
 
     LOGE("No cmd handlers defined for '%s'", cmd);
+    cli->sendMsg("UNKNOWN_CMD");
+    return;
 }
-

--- a/libsysutils/src/FrameworkManager.cpp
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * 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 <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/un.h>
-
-#include <cutils/config_utils.h>
-#include <cutils/cpu_info.h>
-#include <cutils/properties.h>
-#include <cutils/sockets.h>
-
-#define LOG_TAG "FrameworkManager"
-#include <cutils/log.h>
-
-#include <sysutils/FrameworkManager.h>
-#include <sysutils/FrameworkListener.h>
-
-FrameworkManager::FrameworkManager(FrameworkListener *Listener) {
-    mDoorbell = -1;
-    mFwSock = -1;
-    mListener = Listener;
-
-    pthread_mutex_init(&mWriteMutex, NULL);
-}
-
-int FrameworkManager::run() {
-
-    if (mListener->run()) {
-        LOGE("Error running listener (%s)", strerror(errno));
-        return -1;
-    }
-
-    return 0;
-}
-
-/* ========
- * Privates
- * ========
- */
-
-int FrameworkManager::sendMsg(char *msg) {
-    LOGD("FrameworkManager::sendMsg(%s)", msg);
-    if (mFwSock < 0) {
-        errno = EHOSTUNREACH;
-        return -1;
-    }
-
-    pthread_mutex_lock(&mWriteMutex);
-    if (write(mFwSock, msg, strlen(msg) +1) < 0) {
-        LOGW("Unable to send msg '%s' (%s)", msg, strerror(errno));
-    }
-    pthread_mutex_unlock(&mWriteMutex);
-    return 0;
-}
-
-int FrameworkManager::sendMsg(char *msg, char *data) {
-    char *buffer = (char *) alloca(strlen(msg) + strlen(data) + 1);
-    if (!buffer) {
-        errno = -ENOMEM;
-        return -1;
-    }
-    strcpy(buffer, msg);
-    strcat(buffer, data);
-    return sendMsg(buffer);
-}

--- a/libsysutils/src/NetlinkListener.cpp
+++ b/libsysutils/src/NetlinkListener.cpp
@@ -29,8 +29,9 @@ NetlinkListener::NetlinkListener(int socket) :
                             SocketListener(socket, false) {
 }
 
-bool NetlinkListener::onDataAvailable(int socket)
+bool NetlinkListener::onDataAvailable(SocketClient *cli)
 {
+    int socket = cli->getSocket();
     LOGD("NetlinkListener::onDataAvailable()");
 
     int count;

--- /dev/null
+++ b/libsysutils/src/SocketClient.cpp
@@ -0,0 +1,41 @@
+#include <alloca.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <pthread.h>
+
+#define LOG_TAG "SocketClient"
+#include <cutils/log.h>
+
+#include <sysutils/SocketClient.h>
+
+SocketClient::SocketClient(int socket) {
+    mSocket = socket;
+    pthread_mutex_init(&mWriteMutex, NULL);
+}
+
+int SocketClient::sendMsg(char *msg) {
+    LOGD("SocketClient::sendMsg(%s)", msg);
+    if (mSocket < 0) {
+        errno = EHOSTUNREACH;
+        return -1;
+    }
+
+    pthread_mutex_lock(&mWriteMutex);
+    if (write(mSocket, msg, strlen(msg) +1) < 0) {
+        LOGW("Unable to send msg '%s' (%s)", msg, strerror(errno));
+    }
+    pthread_mutex_unlock(&mWriteMutex);
+    return 0;
+}
+
+int SocketClient::sendMsg(char *msg, char *data) {
+    char *buffer = (char *) alloca(strlen(msg) + strlen(data) + 1);
+    if (!buffer) {
+        errno = -ENOMEM;
+        return -1;
+    }
+    strcpy(buffer, msg);
+    strcat(buffer, data);
+    return sendMsg(buffer);
+}
+

--- a/libsysutils/src/SocketListener.cpp
+++ b/libsysutils/src/SocketListener.cpp
@@ -24,26 +24,28 @@
 
 #define LOG_TAG "SocketListener"
 #include <cutils/log.h>
-
 #include <cutils/sockets.h>
 
 #include <sysutils/SocketListener.h>
+#include <sysutils/SocketClient.h>
 
-SocketListener::SocketListener(const char *socketName, bool acceptClients) {
-    mAcceptClients = acceptClients;
-    mCsock = -1;
+SocketListener::SocketListener(const char *socketName, bool listen) {
+    mListen = listen;
     mSocketName = socketName;
     mSock = -1;
+    pthread_mutex_init(&mClientsLock, NULL);
+    mClients = new SocketClientCollection();
 }
 
-SocketListener::SocketListener(int socketFd, bool acceptClients) {
-    mAcceptClients = acceptClients;
-    mCsock = -1;
+SocketListener::SocketListener(int socketFd, bool listen) {
+    mListen = listen;
     mSocketName = NULL;
     mSock = socketFd;
+    pthread_mutex_init(&mClientsLock, NULL);
+    mClients = new SocketClientCollection();
 }
 
-int SocketListener::run() {
+int SocketListener::startListener() {
 
     if (!mSocketName && mSock == -1) {
         errno = EINVAL;
@@ -56,72 +58,155 @@ int SocketListener::run() {
         }
     }
 
-    if (mAcceptClients) {
-        if (listen(mSock, 4) < 0) {
-            LOGE("Unable to listen on socket (%s)", strerror(errno));
-            return -1;
-        }
+    if (mListen && listen(mSock, 4) < 0) {
+        LOGE("Unable to listen on socket (%s)", strerror(errno));
+        return -1;
+    } else if (!mListen) {
+        mClients->push_back(new SocketClient(mSock));
+        LOGD("Created phantom client");
     }
 
+    if (pipe(mCtrlPipe))
+        return -1;
+
+    if (pthread_create(&mThread, NULL, SocketListener::threadStart, this))
+        return -1;
+
+    return 0;
+}
+
+int SocketListener::stopListener() {
+    char c = 0;
+
+    if (write(mCtrlPipe[1], &c, 1) != 1) {
+        LOGE("Error writing to control pipe (%s)", strerror(errno));
+        return -1;
+    }
+
+    LOGD("Signaled listener thread - waiting for it to die");
+    void *ret;
+    if (pthread_join(mThread, &ret)) {
+        LOGE("Error joining to listener thread (%s)", strerror(errno));
+        return -1;
+    }
+    LOGD("Listener stopped");
+    return 0;
+}
+
+void *SocketListener::threadStart(void *obj) {
+    SocketListener *me = reinterpret_cast<SocketListener *>(obj);
+
+    me->runListener();
+    LOGD("Listener thread shutting down");
+    pthread_exit(NULL);
+    return NULL;
+}
+
+void SocketListener::runListener() {
+
     while(1) {
+        SocketClientCollection::iterator it;
         fd_set read_fds;
         struct timeval to;
-        int max = 0;
         int rc = 0;
 
         to.tv_sec = 60 * 60;
         to.tv_usec = 0;
 
+        int max = 0;
+
         FD_ZERO(&read_fds);
 
-        if ((mAcceptClients == false) ||
-            (mAcceptClients == true && mCsock == -1)) {
-            FD_SET(mSock, &read_fds);
+        if (mListen) {
             max = mSock;
-        } else if (mCsock != -1) {
-            FD_SET(mCsock, &read_fds);
-            max = mCsock;
+            FD_SET(mSock, &read_fds);
         }
 
+        FD_SET(mCtrlPipe[0], &read_fds);
+        if (mCtrlPipe[0] > max)
+            max = mCtrlPipe[0];
+
+        pthread_mutex_lock(&mClientsLock);
+        for (it = mClients->begin(); it != mClients->end(); ++it) {
+            FD_SET((*it)->getSocket(), &read_fds);
+            if ((*it)->getSocket() > max)
+                max = (*it)->getSocket();
+        }
+        pthread_mutex_unlock(&mClientsLock);
+        
         if ((rc = select(max + 1, &read_fds, NULL, NULL, &to)) < 0) {
             LOGE("select failed (%s)", strerror(errno));
-            return -errno;
-        } else if (!rc)
+            sleep(1);
             continue;
-        else if (FD_ISSET(mSock, &read_fds)) {
-            /*
-             * If we're accepting client connections then 
-             * accept and gobble the event. Otherwise
-             * pass it on to the handlers.
-             */
-            if (mAcceptClients) {
-                struct sockaddr addr;
-                socklen_t alen = sizeof(addr);
-
-                if ((mCsock = accept(mSock, &addr, &alen)) < 0) {
-                    LOGE("accept failed (%s)", strerror(errno));
-                    return -errno;
-                }
-                LOGD("SocketListener client connection accepted");
-            } else if (!onDataAvailable(mSock)) {
-                LOGW("SocketListener closing listening socket (Will shut down)");
-                close(mSock);
-                return -ESHUTDOWN;
+        } else if (!rc) {
+            LOGD("select timeout");
+            continue;
+        }
+
+        if (FD_ISSET(mCtrlPipe[0], &read_fds)) {
+            LOGD("Control message received");
+            break;
+        }
+        if (mListen && FD_ISSET(mSock, &read_fds)) {
+            struct sockaddr addr;
+            socklen_t alen = sizeof(addr);
+            int c;
+
+            if ((c = accept(mSock, &addr, &alen)) < 0) {
+                LOGE("accept failed (%s)", strerror(errno));
+                sleep(1);
+                continue;
             }
-        } else if ((FD_ISSET(mCsock, &read_fds)) &&
-                   !onDataAvailable(mCsock)) {
-                /*
-                 * Once mCsock == -1, we'll start
-                 * accepting connections on mSock again.
-                 */
-                LOGD("SocketListener closing client socket");
-                close(mCsock);
-                mCsock = -1;
+            LOGD("SocketListener client connection accepted");
+            pthread_mutex_lock(&mClientsLock);
+            mClients->push_back(new SocketClient(c));
+            pthread_mutex_unlock(&mClientsLock);
+        }
+
+        do {
+            pthread_mutex_lock(&mClientsLock);
+            for (it = mClients->begin(); it != mClients->end(); ++it) {
+                int fd = (*it)->getSocket();
+                if (FD_ISSET(fd, &read_fds)) {
+                    pthread_mutex_unlock(&mClientsLock);
+                    if (!onDataAvailable(*it)) {
+                        LOGD("SocketListener closing client socket");
+                        close(fd);
+                        pthread_mutex_lock(&mClientsLock);
+                        delete *it;
+                        it = mClients->erase(it);
+                        pthread_mutex_unlock(&mClientsLock);
+                    }
+                    FD_CLR(fd, &read_fds);
+                    continue;
+                }
             }
+            pthread_mutex_unlock(&mClientsLock);
+        } while (0);
     }
-    return 0;
 }
 
-bool SocketListener::onDataAvailable(int socket) {
-    return false;
+void SocketListener::sendBroadcast(char *msg) {
+    pthread_mutex_lock(&mClientsLock);
+    SocketClientCollection::iterator i;
+
+    for (i = mClients->begin(); i != mClients->end(); ++i) {
+        if ((*i)->sendMsg(msg)) {
+            LOGW("Error sending broadcast (%s)", strerror(errno));
+        }
+    }
+    pthread_mutex_unlock(&mClientsLock);
+}
+
+void SocketListener::sendBroadcast(char *msg, char *data) {
+    pthread_mutex_lock(&mClientsLock);
+    SocketClientCollection::iterator i;
+
+    for (i = mClients->begin(); i != mClients->end(); ++i) {
+        if ((*i)->sendMsg(msg, data)) {
+            LOGW("Error sending broadcast (%s)", strerror(errno));
+        }
+    }
+    pthread_mutex_unlock(&mClientsLock);
 }
+

--- a/nexus/Android.mk
+++ b/nexus/Android.mk
@@ -19,6 +19,7 @@ LOCAL_SRC_FILES:=                          \
                   SupplicantListener.cpp   \
                   VpnController.cpp        \
                   ScanResult.cpp           \
+                  WifiScanner.cpp          \
 
 LOCAL_MODULE:= nexus
 

--- a/nexus/CommandListener.cpp
+++ b/nexus/CommandListener.cpp
@@ -19,60 +19,64 @@
 #define LOG_TAG "CommandListener"
 #include <cutils/log.h>
 
+#include <sysutils/SocketClient.h>
+
 #include "CommandListener.h"
 #include "Controller.h"
 #include "NetworkManager.h"
 #include "WifiController.h"
 
-CommandListener::CommandListener(NetworkManager *netman) :
+CommandListener::CommandListener() :
                  FrameworkListener("nexus") {
-    mNetman = netman;
-
-    registerCmd(new WifiEnableCmd(netman));
-    registerCmd(new WifiDisableCmd(netman));
-    registerCmd(new WifiScanCmd(netman));
+    registerCmd(new WifiEnableCmd());
+    registerCmd(new WifiDisableCmd());
+    registerCmd(new WifiScanCmd());
+    registerCmd(new WifiScanResultsCmd());
 
-    registerCmd(new VpnEnableCmd(netman));
-    registerCmd(new VpnDisableCmd(netman));
+    registerCmd(new VpnEnableCmd());
+    registerCmd(new VpnDisableCmd());
 }
  
 /* -------------
  * Wifi Commands
  * ------------ */
 
-CommandListener::WifiEnableCmd::WifiEnableCmd(NetworkManager *netman) :
-                 NexusCommand("wifi_enable", netman) {
+CommandListener::WifiEnableCmd::WifiEnableCmd() :
+                 NexusCommand("wifi_enable") {
 } 
                
-int CommandListener::WifiEnableCmd::runCommand(char *data) {
-    Controller *c = mNetman->findController("WIFI");
+int CommandListener::WifiEnableCmd::runCommand(SocketClient *cli, char *data) {
+    Controller *c = NetworkManager::Instance()->findController("WIFI");
     char buffer[32];
 
     sprintf(buffer, "WIFI_ENABLE:%d", (c->enable() ? errno : 0));
-    mNetman->getFrameworkManager()->sendMsg(buffer);
+
+    cli->sendMsg(buffer);
     return 0;
 }
 
-CommandListener::WifiDisableCmd::WifiDisableCmd(NetworkManager *netman) :
-                 NexusCommand("wifi_disable", netman) {
+CommandListener::WifiDisableCmd::WifiDisableCmd() :
+                 NexusCommand("wifi_disable") {
 } 
                
-int CommandListener::WifiDisableCmd::runCommand(char *data) {
-    Controller *c = mNetman->findController("WIFI");
+int CommandListener::WifiDisableCmd::runCommand(SocketClient *cli, char *data) {
+    Controller *c = NetworkManager::Instance()->findController("WIFI");
     char buffer[32];
 
     sprintf(buffer, "WIFI_DISABLE:%d", (c->disable() ? errno : 0));
-    mNetman->getFrameworkManager()->sendMsg(buffer);
+    cli->sendMsg(buffer);
     return 0;
 }
 
-CommandListener::WifiScanCmd::WifiScanCmd(NetworkManager *netman) :
-                 NexusCommand("wifi_scan", netman) {
+CommandListener::WifiScanCmd::WifiScanCmd() :
+                 NexusCommand("wifi_scan") {
 } 
 
-int CommandListener::WifiScanCmd::runCommand(char *data) {
+int CommandListener::WifiScanCmd::runCommand(SocketClient *cli, char *data) {
     LOGD("WifiScanCmd(%s)", data);
-    WifiController *wc = (WifiController *) mNetman->findController("WIFI");
+
+    WifiController *wc = (WifiController *) NetworkManager::Instance()->findController("WIFI");
+
     char buffer[32];
     int mode = 0;
     char *bword, *last;
@@ -90,35 +94,62 @@ int CommandListener::WifiScanCmd::runCommand(char *data) {
     mode = atoi(bword);
 
     sprintf(buffer, "WIFI_SCAN:%d", (wc->setScanMode(mode) ? errno : 0));
-    mNetman->getFrameworkManager()->sendMsg(buffer);
+    cli->sendMsg(buffer);
+    return 0;
+}
+
+CommandListener::WifiScanResultsCmd::WifiScanResultsCmd() :
+                 NexusCommand("wifi_scan_results") {
+} 
+
+int CommandListener::WifiScanResultsCmd::runCommand(SocketClient *cli, char *data) {
+    NetworkManager *nm = NetworkManager::Instance();
+
+    WifiController *wc = (WifiController *) nm->findController("WIFI");
+
+    ScanResultCollection *src = wc->createScanResults();
+    ScanResultCollection::iterator it;
+    char buffer[256];
+    
+    for(it = src->begin(); it != src->end(); ++it) {
+        sprintf(buffer, "WIFI_SCAN_RESULT:%s:%u:%d:%s:%s",
+                (*it)->getBssid(), (*it)->getFreq(), (*it)->getLevel(),
+                (*it)->getFlags(), (*it)->getSsid());
+        cli->sendMsg(buffer);
+        delete (*it);
+        it = src->erase(it);
+    }
+
+    delete src;
+    cli->sendMsg("WIFI_SCAN_RESULT:0");
     return 0;
 }
 
 /* ------------
  * Vpn Commands
  * ------------ */
-CommandListener::VpnEnableCmd::VpnEnableCmd(NetworkManager *netman) :
-                 NexusCommand("vpn_enable", netman) {
+CommandListener::VpnEnableCmd::VpnEnableCmd() :
+                 NexusCommand("vpn_enable") {
 } 
                
-int CommandListener::VpnEnableCmd::runCommand(char *data) {
-    Controller *c = mNetman->findController("VPN");
+int CommandListener::VpnEnableCmd::runCommand(SocketClient *cli, char *data) {
+    Controller *c = NetworkManager::Instance()->findController("VPN");
     char buffer[32];
 
     sprintf(buffer, "VPN_ENABLE:%d", (c->enable() ? errno : 0));
-    mNetman->getFrameworkManager()->sendMsg(buffer);
+    cli->sendMsg(buffer);
     return 0;
 }
 
-CommandListener::VpnDisableCmd::VpnDisableCmd(NetworkManager *netman) :
-                 NexusCommand("vpn_disable", netman) {
+CommandListener::VpnDisableCmd::VpnDisableCmd() :
+                 NexusCommand("vpn_disable") {
 } 
                
-int CommandListener::VpnDisableCmd::runCommand(char *data) {
-    Controller *c = mNetman->findController("VPN");
+int CommandListener::VpnDisableCmd::runCommand(SocketClient *cli, char *data) {
+    Controller *c = NetworkManager::Instance()->findController("VPN");
     char buffer[32];
 
     sprintf(buffer, "VPN_DISABLE:%d", (c->disable() ? errno : 0));
-    mNetman->getFrameworkManager()->sendMsg(buffer);
+    cli->sendMsg(buffer);
     return 0;
 }

--- a/nexus/CommandListener.h
+++ b/nexus/CommandListener.h
@@ -19,50 +19,52 @@
 #include <sysutils/FrameworkListener.h>
 #include "NexusCommand.h"
 
-class NetworkManager;
-
 class CommandListener : public FrameworkListener {
-protected:
-    NetworkManager *mNetman;
-
 public:
-    CommandListener(NetworkManager *netman);
+    CommandListener();
     virtual ~CommandListener() {}
 
 private:
     class WifiEnableCmd : public NexusCommand {
     public:
-        WifiEnableCmd(NetworkManager *);
+        WifiEnableCmd();
         virtual ~WifiEnableCmd() {}
-        int runCommand(char *data);
+        int runCommand(SocketClient *c, char *data);
     };
 
     class WifiDisableCmd : public NexusCommand {
     public:
-        WifiDisableCmd(NetworkManager *);
+        WifiDisableCmd();
         virtual ~WifiDisableCmd() {}
-        int runCommand(char *data);
+        int runCommand(SocketClient *c, char *data);
     };
 
     class WifiScanCmd : public NexusCommand {
     public:
-        WifiScanCmd(NetworkManager *);
+        WifiScanCmd();
         virtual ~WifiScanCmd() {}
-        int runCommand(char *data);
+        int runCommand(SocketClient *c, char *data);
+    };
+
+    class WifiScanResultsCmd : public NexusCommand {
+    public:
+        WifiScanResultsCmd();
+        virtual ~WifiScanResultsCmd() {}
+        int runCommand(SocketClient *c, char *data);
     };
 
     class VpnEnableCmd : public NexusCommand {
     public:
-        VpnEnableCmd(NetworkManager *);
+        VpnEnableCmd();
         virtual ~VpnEnableCmd() {}
-        int runCommand(char *data);
+        int runCommand(SocketClient *c, char *data);
     };
 
     class VpnDisableCmd : public NexusCommand {
     public:
-        VpnDisableCmd(NetworkManager *);
+        VpnDisableCmd();
         virtual ~VpnDisableCmd() {}
-        int runCommand(char *data);
+        int runCommand(SocketClient *c, char *data);
     };
 
 };

--- a/nexus/NetworkManager.cpp
+++ b/nexus/NetworkManager.cpp
@@ -21,36 +21,30 @@
 #include <cutils/log.h>
 
 #include "NetworkManager.h"
-#include "CommandListener.h"
-#include "LoopController.h"
-#include "VpnController.h"
 
-#include "TiwlanWifiController.h"
+NetworkManager *NetworkManager::sInstance = NULL;
+
+NetworkManager *NetworkManager::Instance() {
+    if (!sInstance)
+        sInstance = new NetworkManager();
+    return sInstance;
+}
 
 NetworkManager::NetworkManager() {
-    mListener = new CommandListener(this);
-    mFm = new FrameworkManager(mListener);
+    mBroadcaster = NULL;
     mControllers = new ControllerCollection();
 }
 
 int NetworkManager::run() {
-    LOGD("NetworkManager::start()");
-
-    // XXX: Factory needed
-    addController(new LoopController());
-    addController(new TiwlanWifiController("/system/lib/modules/wlan.ko", "wlan", ""));
-    addController(new VpnController());
-    //addController(new GenericController("rmnet0"));
-
     if (startControllers()) {
         LOGW("Unable to start all controllers (%s)", strerror(errno));
     }
-    mFm->run();
     return 0;
 }
 
-void NetworkManager::addController(Controller *c) {
+int NetworkManager::attachController(Controller *c) {
     mControllers->push_back(c);
+    return 0;
 }
 
 int NetworkManager::startControllers() {

--- a/nexus/NetworkManager.h
+++ b/nexus/NetworkManager.h
@@ -16,31 +16,36 @@
 #ifndef _NETWORKMANAGER_H
 #define _NETWORKMANAGER_H
 
-#include "Controller.h"
+#include <sysutils/SocketListener.h>
 
-#include <sysutils/FrameworkManager.h>
+#include "Controller.h"
 
 class NetworkManager {
 private:
-    FrameworkListener    *mListener;
-    FrameworkManager     *mFm;
+    static NetworkManager *sInstance;
+
+private:
     ControllerCollection *mControllers;
+    SocketListener       *mBroadcaster;
 
 public:
-    NetworkManager();
     virtual ~NetworkManager() {}
 
     int run();
 
+    int attachController(Controller *controller);
+
+    Controller *findController(const char *name);
+
+    void setBroadcaster(SocketListener *sl) { mBroadcaster = sl; }
+    SocketListener *getBroadcaster() { return mBroadcaster; }
+
+    static NetworkManager *Instance();
+
 private:
-    void addController(Controller *c);
     int startControllers();
     int stopControllers();
-
-public:
-    Controller *findController(const char *name);
-    ControllerCollection *getControllers() { return mControllers; }
-    FrameworkManager *getFrameworkManager() { return mFm; }
+    NetworkManager();
 
 public:
 // XXX: Extract these into an interface

--- a/nexus/NexusCommand.cpp
+++ b/nexus/NexusCommand.cpp
@@ -15,7 +15,6 @@
  */
 #include "NexusCommand.h"
 
-NexusCommand::NexusCommand(const char *cmd, NetworkManager *netman) :
+NexusCommand::NexusCommand(const char *cmd) :
               FrameworkCommand(cmd)  {
-    mNetman = netman;
 }

--- a/nexus/NexusCommand.h
+++ b/nexus/NexusCommand.h
@@ -18,14 +18,9 @@
 
 #include <sysutils/FrameworkCommand.h>
 
-class NetworkManager;
-
 class NexusCommand : public FrameworkCommand {
-protected:
-    NetworkManager *mNetman;
-
 public:
-    NexusCommand(const char *cmd, NetworkManager *netman);
+    NexusCommand(const char *cmd);
     virtual ~NexusCommand() {}
 };
 

--- a/nexus/ScanResult.h
+++ b/nexus/ScanResult.h
@@ -38,6 +38,7 @@ public:
 
     const char *getBssid() { return mBssid; }
     uint32_t getFreq() { return mFreq; }
+    int getLevel() { return mLevel; }
     const char *getFlags() { return mFlags; }
     const char *getSsid() { return mSsid; }
 };

--- a/nexus/Supplicant.cpp
+++ b/nexus/Supplicant.cpp
@@ -13,6 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+#include <stdlib.h>
 #include <errno.h>
 
 #define LOG_TAG "Supplicant"
@@ -31,6 +33,7 @@
 #include "SupplicantState.h"
 #include "SupplicantEvent.h"
 #include "ScanResult.h"
+#include "NetworkManager.h"
 
 #include "libwpa_client/wpa_ctrl.h"
 
@@ -52,7 +55,6 @@ Supplicant::Supplicant() {
 }
 
 int Supplicant::start() {
-    LOGD("start():");
     // XXX: Validate supplicant config file
     
     char status[PROPERTY_VALUE_MAX] = {'\0'};
@@ -63,47 +65,47 @@ int Supplicant::start() {
 #endif
 
     if (property_get(SUPP_PROP_NAME, status, NULL) &&
-        strcmp(status, "running") == 0) {
-        return 0;
-    }
-
-    wpa_ctrl_cleanup();
+        !strcmp(status, "running")) {
+        LOGD("Supplicant already started");
+    } else {
 #ifdef HAVE_LIBC_SYSTEM_PROPERTIES
-    pi = __system_property_find(SUPP_PROP_NAME);
-    if (pi != NULL)
-        serial = pi->serial;
+        pi = __system_property_find(SUPP_PROP_NAME);
+        if (pi != NULL)
+            serial = pi->serial;
 #endif
 
-    property_set("ctl.start", SUPPLICANT_NAME);
-    sched_yield();
-    while (count--) {
+        LOGD("Starting Supplicant");
+        property_set("ctl.start", SUPPLICANT_NAME);
+        sched_yield();
+        while (count--) {
 #ifdef HAVE_LIBC_SYSTEM_PROPERTIES
-        if (!pi)
-            pi = __system_property_find(SUPP_PROP_NAME);
-        if (pi) {
-            __system_property_read(pi, NULL, status);
-            if (strcmp(status, "running") == 0)
-                return 0;
-            else if (pi->serial != serial &&
-                    strcmp(status, "stopped") == 0) {
-                errno = EIO;
-                return -1;
+            if (!pi)
+                pi = __system_property_find(SUPP_PROP_NAME);
+            if (pi) {
+                __system_property_read(pi, NULL, status);
+                if (strcmp(status, "running") == 0)
+                    break;
+                else if (pi->serial != serial &&
+                        strcmp(status, "stopped") == 0) {
+                    errno = EIO;
+                    return -1;
+                }
             }
-        }
 #else
-        if (property_get(SUPP_PROP_NAME, status, NULL)) {
-            if (strcmp(status, "running") == 0)
-                break;
-        }
+            if (property_get(SUPP_PROP_NAME, status, NULL)) {
+                if (strcmp(status, "running") == 0)
+                    break;
+            }
 #endif
-        usleep(100000);
+            usleep(100000);
+        }
+        if (!count) {
+            errno = ETIMEDOUT;
+            return -1;
+        }
     }
 
-    if (!count) {
-        errno = ETIMEDOUT;
-        return -1;
-    }
-  
+    wpa_ctrl_cleanup();
     if (connectToSupplicant()) {
         LOGE("Error connecting to supplicant (%s)\n", strerror(errno));
         return -1;
@@ -112,7 +114,6 @@ int Supplicant::start() {
 }
 
 int Supplicant::stop() {
-    LOGD("stop()");
 
     char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
     int count = 50; 
@@ -124,9 +125,11 @@ int Supplicant::stop() {
 
     if (property_get(SUPP_PROP_NAME, supp_status, NULL)
         && strcmp(supp_status, "stopped") == 0) {
+        LOGD("Supplicant already stopped");
         return 0;
     }
 
+    LOGD("Stopping Supplicant");
     property_set("ctl.stop", SUPPLICANT_NAME);
     sched_yield();
 
@@ -153,24 +156,29 @@ int Supplicant::stop() {
         return -1;
     }
 
-    LOGD("Stopped OK");
+    LOGD("Supplicant shutdown");
 
     return 0;
 }
 
 bool Supplicant::isStarted() {
     char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
-    if (!property_get(SUPP_PROP_NAME, supp_status, NULL) ||
-        !strcmp(supp_status, "running")) {
-        return false;
-    }
-    return true;
+
+    int rc = property_get(SUPP_PROP_NAME, supp_status, NULL);
+
+    LOGD("rc = %d, property = '%s'", rc, supp_status);
+
+    if (!strcmp(supp_status, "running"))
+        return true;
+
+    return false;
 }
 
 int Supplicant::connectToSupplicant() {
     char ifname[256];
     char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
 
+    LOGD("connectToSupplicant()");
     if (!property_get(SUPP_PROP_NAME, supp_status, NULL)
             || strcmp(supp_status, "running") != 0) {
         LOGE("Supplicant not running, cannot connect");
@@ -213,13 +221,14 @@ int Supplicant::sendCommand(const char *cmd, char *reply, size_t *reply_len)
         return -1;
     }
 
-    LOGD("sendCommand(): -> '%s'", cmd);
+//    LOGD("sendCommand(): -> '%s'", cmd);
 
     int rc;
     if ((rc = wpa_ctrl_request(mCtrl, cmd, strlen(cmd), reply, reply_len, NULL)) == -2)  {
         errno = ETIMEDOUT;
         return -1;
     } else if (rc < 0 || !strncmp(reply, "FAIL", 4)) {
+        LOGW("sendCommand(): <- '%s'", reply);
         errno = EIO;
         return -1;
     }
@@ -228,7 +237,7 @@ int Supplicant::sendCommand(const char *cmd, char *reply, size_t *reply_len)
         !strncmp(cmd, "SCAN_RESULTS", 12)) 
         reply[*reply_len] = '\0';
 
-    LOGD("sendCommand(): <- '%s'", reply);
+//    LOGD("sendCommand(): <- '%s'", reply);
     return 0;
 }
 
@@ -332,12 +341,16 @@ int Supplicant::onScanResultsEvent(SupplicantEvent *evt) {
 
         if (!strtok_r(reply, "\n", &linep_next)) {
             free(reply);
-            return 0;;
+            pthread_mutex_unlock(&mLatestScanResultsLock);
+            return 0;
         }
 
         while((linep = strtok_r(NULL, "\n", &linep_next)))
             mLatestScanResults->push_back(new ScanResult(linep));
-
+    
+        char tmp[32];
+        sprintf(tmp, "WIFI_SCAN_RESULTS_READY:%d", mLatestScanResults->size());
+        NetworkManager::Instance()->getBroadcaster()->sendBroadcast(tmp);
         pthread_mutex_unlock(&mLatestScanResultsLock);
         free(reply);
     } else {
@@ -347,8 +360,24 @@ int Supplicant::onScanResultsEvent(SupplicantEvent *evt) {
 }
 
 int Supplicant::onStateChangeEvent(SupplicantEvent *evt) {
-    LOGD("onStateChangeEvent(%s)", evt->getEvent());
-    // XXX: Update mState
+    char *bword, *last;
+    char *tmp = strdup(evt->getEvent());
+
+    if (!(bword = strtok_r(tmp, " ", &last))) {
+        LOGE("Malformatted state update (%s)", evt->getEvent());
+        free(tmp);
+        return 0;
+    }
+
+    if (!(bword = strtok_r(NULL, " ", &last))) {
+        LOGE("Malformatted state update (%s)", evt->getEvent());
+        free(tmp);
+        return 0;
+    }
+
+    mState = atoi(&bword[strlen("state=")]);
+    LOGD("State changed to %d", mState);
+    free(tmp);
     return 0;
 }
 
@@ -363,7 +392,7 @@ int Supplicant::onDriverStateEvent(SupplicantEvent *evt) {
 }
 
 // XXX: Use a cursor + smartptr instead
-const ScanResultCollection *Supplicant::getLatestScanResults() {
+ScanResultCollection *Supplicant::createLatestScanResults() {
     ScanResultCollection *d = new ScanResultCollection();
     ScanResultCollection::iterator i;
 

--- a/nexus/Supplicant.h
+++ b/nexus/Supplicant.h
@@ -46,7 +46,7 @@ public:
 
     int getState() { return mState; }
 
-    const ScanResultCollection *getLatestScanResults();
+    ScanResultCollection *createLatestScanResults();
 
 // XXX: Extract these into an interface
 public:

--- a/nexus/SupplicantListener.cpp
+++ b/nexus/SupplicantListener.cpp
@@ -30,31 +30,9 @@ SupplicantListener::SupplicantListener(Supplicant *supplicant, struct wpa_ctrl *
                     SocketListener(wpa_ctrl_get_fd(monitor), false) {
     mSupplicant = supplicant;
     mMonitor = monitor;
-    mThread = NULL;
 }
 
-int SupplicantListener::startListener() {
-    LOGD("startListener()");
-    pthread_attr_t attr;
-    pthread_attr_init(&attr);
-    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
-
-    return pthread_create(&mThread, &attr, &SupplicantListener::threadStart, this);
-}
-
-int SupplicantListener::stopListener() {
-    errno = -ENOSYS;
-    return -1;
-}
-
-void *SupplicantListener::threadStart(void *obj) {
-    LOGD("threadStart(): Worker thread started");
-    reinterpret_cast<SupplicantListener *>(obj)->run();
-    LOGD("threadStart(): Worker thread exited");
-    return NULL;
-}
-
-bool SupplicantListener::onDataAvailable(int socket) {
+bool SupplicantListener::onDataAvailable(SocketClient *cli) {
     char buf[255];
     size_t buflen = sizeof(buf);
     int rc;
@@ -62,7 +40,7 @@ bool SupplicantListener::onDataAvailable(int socket) {
 
     if ((rc = wpa_ctrl_recv(mMonitor, buf, &nread))) {
         LOGE("wpa_ctrl_recv failed (%s)", strerror(errno));
-        return -errno;
+        return false;
     }
 
     buf[nread] = '\0';
@@ -108,7 +86,9 @@ bool SupplicantListener::onDataAvailable(int socket) {
 
     delete evt;
     
-    if (rc)
+    if (rc) {
+        LOGW("Handler %d (%s) error: %s", evt->getType(), evt->getEvent(), strerror(errno));
         return false;
+    }
     return true;
 }

--- a/nexus/SupplicantListener.h
+++ b/nexus/SupplicantListener.h
@@ -16,33 +16,27 @@
 #ifndef _SUPPLICANTLISTENER_H__
 #define _SUPPLICANTLISTENER_H__
 
-#include <pthread.h>
-
 #include <sysutils/SocketListener.h>
 
 struct wpa_ctrl;
 class Supplicant;
+class SocketClient;
 
 class SupplicantListener: public SocketListener {
 private:
     struct wpa_ctrl *mMonitor;
     Supplicant      *mSupplicant;
-    pthread_t       mThread;
 
 public:
     SupplicantListener(Supplicant *supplicant, struct wpa_ctrl *monitor);
     virtual ~SupplicantListener() {}
-    int startListener();
-    int stopListener();
 
     struct wpa_ctrl *getMonitor() { return mMonitor; }
     Supplicant *getSupplicant() { return mSupplicant; }
 
 protected:
-    virtual bool onDataAvailable(int socket);
+    virtual bool onDataAvailable(SocketClient *c);
 
-private:
-    static void *threadStart(void *obj);
 };
 
 #endif

--- a/nexus/SupplicantState.h
+++ b/nexus/SupplicantState.h
@@ -18,16 +18,16 @@
 
 class SupplicantState {
 public:
-    static const int UNKNOWN           = 0;
-    static const int DISCONNECTED      = 1;
-    static const int INACTIVE          = 2;
-    static const int SCANNING          = 3;
-    static const int ASSOCIATING       = 4;
-    static const int ASSOCIATED        = 5;
-    static const int FOURWAY_HANDSHAKE = 6;
-    static const int GROUP_HANDSHAKE   = 7;
-    static const int COMPLETED         = 8;
-    static const int IDLE              = 9;
+    static const int UNKNOWN           = -1;
+    static const int DISCONNECTED      = 0;
+    static const int INACTIVE          = 1;
+    static const int SCANNING          = 2;
+    static const int ASSOCIATING       = 3;
+    static const int ASSOCIATED        = 4;
+    static const int FOURWAY_HANDSHAKE = 5;
+    static const int GROUP_HANDSHAKE   = 6;
+    static const int COMPLETED         = 7;
+    static const int IDLE              = 8;
 };
 
 #endif

--- a/nexus/TiwlanWifiController.cpp
+++ b/nexus/TiwlanWifiController.cpp
@@ -65,3 +65,17 @@ int TiwlanWifiController::loadFirmware() {
     property_set(DRIVER_PROP_NAME, "timeout");
     return -1;
 }
+
+bool TiwlanWifiController::isFirmwareLoaded() {
+    char driver_status[PROPERTY_VALUE_MAX];
+    if (property_get(DRIVER_PROP_NAME, driver_status, NULL)) {
+        if (!strcmp(driver_status, "ok"))
+            return true;
+        else {
+            LOGD("Driver status '%s'", driver_status);
+            return false;
+        }
+    }
+    LOGW("Unable to get property '%s'", DRIVER_PROP_NAME);
+    return false;
+}

--- a/nexus/TiwlanWifiController.h
+++ b/nexus/TiwlanWifiController.h
@@ -27,5 +27,6 @@ public:
     virtual int powerDown();
     virtual bool isPoweredUp();
     virtual int loadFirmware();
+    virtual bool isFirmwareLoaded();
 };
 #endif

--- a/nexus/WifiController.cpp
+++ b/nexus/WifiController.cpp
@@ -21,6 +21,8 @@
 
 #include "Supplicant.h"
 #include "WifiController.h"
+#include "WifiScanner.h"
+#include "NetworkManager.h"
 
 WifiController::WifiController(char *modpath, char *modname, char *modargs) :
                 Controller("WIFI") {
@@ -29,6 +31,7 @@ WifiController::WifiController(char *modpath, char *modname, char *modargs) :
     strncpy(mModuleArgs, modargs, sizeof(mModuleArgs));
 
     mSupplicant = new Supplicant();
+    mScanner = new WifiScanner(mSupplicant, 10);
     mCurrentScanMode = 0;
 }
 
@@ -42,26 +45,36 @@ int WifiController::stop() {
 }
 
 int WifiController::enable() {
-    if (!isPoweredUp() && powerUp()) {
-        LOGE("Powerup failed (%s)", strerror(errno));
-        return -1;
+    if (!isPoweredUp()) {
+        sendStatusBroadcast("POWERING_UP");
+        if (powerUp()) {
+            LOGE("Powerup failed (%s)", strerror(errno));
+            return -1;
+        }
     }
-   
+
     if (mModuleName[0] != '\0' && !isKernelModuleLoaded(mModuleName)) {
+        sendStatusBroadcast("LOADING_DRIVER");
         if (loadKernelModule(mModulePath, mModuleArgs)) {
             LOGE("Kernel module load failed (%s)", strerror(errno));
             goto out_powerdown;
         }
     }
 
-    if (loadFirmware()) {
-        LOGE("Firmware load failed (%s)", strerror(errno));
-        goto out_powerdown;
+    if (!isFirmwareLoaded()) {
+        sendStatusBroadcast("LOADING_FIRMWARE");
+        if (loadFirmware()) {
+            LOGE("Firmware load failed (%s)", strerror(errno));
+            goto out_powerdown;
+        }
     }
 
-    if (!mSupplicant->isStarted() && mSupplicant->start()) {
-        LOGE("Supplicant start failed (%s)", strerror(errno));
-        goto out_unloadmodule;
+    if (!mSupplicant->isStarted()) {
+        sendStatusBroadcast("STARTING_SUPPLICANT");
+        if (mSupplicant->start()) {
+            LOGE("Supplicant start failed (%s)", strerror(errno));
+            goto out_unloadmodule;
+        }
     }
 
     return 0;
@@ -80,24 +93,38 @@ out_powerdown:
     return -1;
 }
 
+void WifiController::sendStatusBroadcast(const char *msg) {
+    char tmp[255];
+
+    sprintf(tmp, "WIFI_STATUS:%s", msg);
+    NetworkManager::Instance()->getBroadcaster()->sendBroadcast(tmp);
+}
+
 int WifiController::disable() {
-    LOGD("disable()");
 
-    if (mSupplicant->isStarted() && mSupplicant->stop()) {
-        LOGE("Supplicant stop failed (%s)", strerror(errno));
-        return -1;
-    }
+    if (mSupplicant->isStarted()) {
+        sendStatusBroadcast("STOPPING_SUPPLICANT");
+        if (mSupplicant->stop()) {
+            LOGE("Supplicant stop failed (%s)", strerror(errno));
+            return -1;
+        }
+    } else 
+        LOGW("disable(): Supplicant not running?");
 
     if (mModuleName[0] != '\0' && isKernelModuleLoaded(mModuleName)) {
+        sendStatusBroadcast("UNLOADING_DRIVER");
         if (unloadKernelModule(mModuleName)) {
             LOGE("Unable to unload module (%s)", strerror(errno));
             return -1;
         }
     }
 
-    if (isPoweredUp() && powerDown()) {
-        LOGE("Powerdown failed (%s)", strerror(errno));
-        return -1;
+    if (isPoweredUp()) {
+        sendStatusBroadcast("POWERING_DOWN");
+        if (powerDown()) {
+            LOGE("Powerdown failed (%s)", strerror(errno));
+            return -1;
+        }
     }
     return 0;
 }
@@ -106,7 +133,7 @@ int WifiController::loadFirmware() {
     return 0;
 }
 
-int WifiController::setScanMode(int mode) {
+int WifiController::setScanMode(uint32_t mode) {
     int rc = 0;
 
     if (mCurrentScanMode == mode)
@@ -114,21 +141,15 @@ int WifiController::setScanMode(int mode) {
 
     if (!(mode & SCAN_ENABLE_MASK)) {
         if (mCurrentScanMode & SCAN_REPEAT_MASK)
-            stopPeriodicScan();
+            mScanner->stopPeriodicScan();
     } else if (mode & SCAN_REPEAT_MASK)
-        rc = startPeriodicScan();
+        rc = mScanner->startPeriodicScan(mode & SCAN_ACTIVE_MASK);
     else
         rc = mSupplicant->triggerScan(mode & SCAN_ACTIVE_MASK);
     
     return rc;
 }
 
-int WifiController::startPeriodicScan() {
-    errno = -ENOSYS;
-    return -1;
-}
-
-int WifiController::stopPeriodicScan() {
-    errno = -ENOSYS;
-    return -1;
+ScanResultCollection *WifiController::createScanResults() {
+    return mSupplicant->createLatestScanResults();
 }

--- a/nexus/WifiController.h
+++ b/nexus/WifiController.h
@@ -22,6 +22,9 @@
 
 class NetInterface;
 class Supplicant;
+class WifiScanner;
+
+#include "ScanResult.h"
 
 class WifiController : public Controller {
 public:
@@ -40,8 +43,8 @@ private:
     char        mModulePath[255];
     char        mModuleName[64];
     char        mModuleArgs[255];
-    int         mCurrentScanMode;
-
+    uint32_t    mCurrentScanMode;
+    WifiScanner *mScanner;
 
 public:
     WifiController(char *modpath, char *modname, char *modargs);
@@ -53,6 +56,8 @@ public:
     int enable();
     int disable();
 
+    ScanResultCollection *createScanResults();
+
     int getType();
 
     char *getModulePath() { return mModulePath; }
@@ -62,17 +67,17 @@ public:
     Supplicant *getSupplicant() { return mSupplicant; }
 
     int getScanMode() { return mCurrentScanMode; }
-    int setScanMode(int mode);
+    int setScanMode(uint32_t mode);
 
 protected:
     virtual int powerUp() = 0;
     virtual int powerDown() = 0;
     virtual int loadFirmware();
+
+    virtual bool isFirmwareLoaded() = 0;
     virtual bool isPoweredUp() = 0;
 
-private:
-    int startPeriodicScan();
-    int stopPeriodicScan();
+    void sendStatusBroadcast(const char *msg);
 };
 
 #endif

--- /dev/null
+++ b/nexus/WifiScanner.cpp
@@ -0,0 +1,96 @@
+#include <errno.h>
+#include <pthread.h>
+
+#define LOG_TAG "WifiScanner"
+#include <cutils/log.h>
+
+#include "WifiScanner.h"
+#include "Supplicant.h"
+
+extern "C" int pthread_cancel(pthread_t thread);
+
+WifiScanner::WifiScanner(Supplicant *suppl, int period) {
+    mSuppl = suppl;
+    mPeriod = period;
+    mActive = false;
+    mWorkerRunning = false;
+    mAbortRequest = false;
+    pthread_mutex_init(&mAbortRequestLock, NULL);
+    pthread_mutex_init(&mWorkerLock, NULL);
+}
+
+int WifiScanner::startPeriodicScan(bool active) {
+    mActive = active;
+
+    pthread_mutex_lock(&mWorkerLock);
+    if (mWorkerRunning) {
+        errno = EBUSY;
+        return -1;
+    }
+
+    pthread_attr_t attr;
+    pthread_attr_init(&attr);
+    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+    if (pthread_create(&mWorker, &attr, WifiScanner::threadStart, this))
+        return -1;
+
+    return 0;
+}
+
+void *WifiScanner::threadStart(void *obj) {
+    WifiScanner *me = reinterpret_cast<WifiScanner *>(obj);
+    me->run();
+    pthread_exit(NULL);
+    return NULL;
+}
+
+void WifiScanner::threadCleanup(void *obj) {
+    WifiScanner *me = reinterpret_cast<WifiScanner *>(obj);
+
+    me->mWorkerRunning = false;
+    pthread_mutex_unlock(&me->mWorkerLock);
+
+    if (me->mAbortRequest) {
+        me->mAbortRequest = false;
+        pthread_mutex_unlock(&me->mAbortRequestLock);
+    }
+}
+
+int WifiScanner::stopPeriodicScan() {
+    pthread_mutex_lock(&mAbortRequestLock);
+    pthread_mutex_lock(&mWorkerLock);
+    if (mWorkerRunning)
+        mAbortRequest = true;
+    pthread_mutex_unlock(&mWorkerLock);
+    pthread_mutex_unlock(&mAbortRequestLock);
+
+    return 0;
+}
+
+void WifiScanner::run() {
+    LOGD("Thread started");
+
+    mWorkerRunning = true;
+    pthread_cleanup_push(WifiScanner::threadCleanup, this);
+    pthread_mutex_unlock(&mWorkerLock);
+
+    while(1) {
+        LOGD("Triggering periodic scan");
+        if (mSuppl->triggerScan(mActive)) {
+            LOGW("Error triggering scan (%s)", strerror(errno));
+        }
+
+        sleep(mPeriod);
+        pthread_mutex_lock(&mAbortRequestLock);
+        if (mAbortRequest) {
+            LOGD("Abort request!");
+            goto out;
+        }
+        pthread_mutex_unlock(&mAbortRequestLock);
+    }
+
+out:
+    pthread_cleanup_pop(1);
+    pthread_mutex_unlock(&mWorkerLock);
+}

--- /dev/null
+++ b/nexus/WifiScanner.h
@@ -0,0 +1,36 @@
+#ifndef _WIFISCANNER_H
+#define _WIFISCANNER_H
+
+#include <pthread.h>
+
+class Supplicant;
+
+class WifiScanner {
+    pthread_t       mWorker;
+    pthread_mutex_t mWorkerLock;
+    bool            mWorkerRunning;
+    bool            mAbortRequest;
+    pthread_mutex_t mAbortRequestLock;
+
+    Supplicant *mSuppl;
+    int        mPeriod;
+    bool       mActive;
+    
+
+public:
+    WifiScanner(Supplicant *suppl, int period);
+    virtual ~WifiScanner() {}
+
+    int getPeriod() { return mPeriod; }
+
+    int startPeriodicScan(bool active);
+    int stopPeriodicScan();
+
+private:
+    static void *threadStart(void *obj);
+    static void threadCleanup(void *obj);
+
+    void run();
+};
+
+#endif

--- a/nexus/main.cpp
+++ b/nexus/main.cpp
@@ -20,22 +20,44 @@
 
 #include "cutils/log.h"
 #include "NetworkManager.h"
+#include "CommandListener.h"
 
-int main() {
-    NetworkManager    *nm;
+#include "LoopController.h"
+#include "VpnController.h"
+#include "TiwlanWifiController.h"
 
+int main() {
     LOGI("Nexus version 0.1 firing up");
 
-    if (!(nm = new NetworkManager())) {
+    CommandListener *cl = new CommandListener();
+
+    NetworkManager *nm;
+    if (!(nm = NetworkManager::Instance())) {
         LOGE("Unable to create NetworkManager");
         exit (-1);
     };
 
-    if (nm->run()) {
+    nm->setBroadcaster((SocketListener *) cl);
+
+    nm->attachController(new LoopController());
+    nm->attachController(new TiwlanWifiController("/system/lib/modules/wlan.ko", "wlan", ""));
+    nm->attachController(new VpnController());
+
+
+    if (NetworkManager::Instance()->run()) {
         LOGE("Unable to Run NetworkManager (%s)", strerror(errno));
         exit (1);
     }
 
+    if (cl->startListener()) {
+        LOGE("Unable to start  CommandListener (%s)", strerror(errno));
+        exit (1);
+    }
+
+    while(1) {
+        sleep(1000);
+    }
+
     LOGI("Nexus exiting");
     exit(0);
 }

--- a/nexus/nexctl.c
+++ b/nexus/nexctl.c
@@ -65,14 +65,13 @@ int main(int argc, char **argv) {
 
         buffer[strlen(buffer) -1] = 0;
 
-        printf("sending '%s'\n", buffer);
         if (write(sock, buffer, strlen(buffer) +1) < 0) {
             fprintf(stderr, "Error writing data (%s)\n", strerror(errno));
             exit(2);
         }
 
 wait:
-        to.tv_sec = 5;
+        to.tv_sec = 10;
         to.tv_usec = 0;
         FD_ZERO(&read_fds);
         FD_SET(sock, &read_fds);
@@ -88,12 +87,11 @@ wait:
             printf("{response timeout}\n");
             continue;
         } else if (FD_ISSET(sock, &read_fds)) {
-printf("got data!\n");
-             if ((rc = read(sock, buffer, sizeof(buffer)-1)) < 0) {
+             if ((rc = read(sock, buffer, sizeof(buffer)-1)) <= 0) {
                  fprintf(stderr, "Error reading response (%s)\n", strerror(errno));
                  exit(2);
              }
-            printf(" |%s|\n", buffer);
+            printf(" %s\n", buffer);
             goto wait;
         }
     }