nexus: Add skeleton for DhcpClient

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

nexus/Android.mk

@@ -34,7 +34,8 @@ LOCAL_SRC_FILES:=                                      \
                   SupplicantConnectionTimeoutEvent.cpp \
                   SupplicantDisconnectedEvent.cpp      \
                   SupplicantStatus.cpp                 \
-                  TiwlanEventListener.cpp
+                  TiwlanEventListener.cpp              \
+                  DhcpClient.cpp DhcpListener.cpp      \
 
 LOCAL_MODULE:= nexus
 

nexus/DhcpClient.cpp

@@ -0,0 +1,105 @@
+/*
+ * 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 <sys/types.h>
+#include <arpa/inet.h>
+
+#define LOG_TAG "DhcpClient"
+#include <cutils/log.h>
+#include <cutils/properties.h>
+
+#include <sysutils/ServiceManager.h>
+
+#include "DhcpClient.h"
+#include "DhcpState.h"
+#include "DhcpListener.h"
+#include "IDhcpEventHandlers.h"
+
+extern "C" {
+int ifc_disable(const char *ifname);
+int ifc_add_host_route(const char *ifname, uint32_t addr);
+int ifc_remove_host_routes(const char *ifname);
+int ifc_set_default_route(const char *ifname, uint32_t gateway);
+int ifc_get_default_route(const char *ifname);
+int ifc_remove_default_route(const char *ifname);
+int ifc_reset_connections(const char *ifname);
+int ifc_configure(const char *ifname, in_addr_t ipaddr, in_addr_t netmask, in_addr_t gateway, in_addr_t dns1, in_addr_t dns2);
+
+int dhcp_do_request(const char *ifname,
+                    in_addr_t *ipaddr,
+                    in_addr_t *gateway,
+                    in_addr_t *mask,
+                    in_addr_t *dns1,
+                    in_addr_t *dns2,
+                    in_addr_t *server,
+                    uint32_t  *lease);
+int dhcp_stop(const char *ifname);
+int dhcp_release_lease(const char *ifname);
+char *dhcp_get_errmsg();
+}
+
+DhcpClient::DhcpClient(IDhcpEventHandlers *handlers) :
+            mState(DhcpState::STOPPED), mHandlers(handlers) {
+    mServiceManager = new ServiceManager();
+    mListener = NULL;
+}
+
+DhcpClient::~DhcpClient() {
+    delete mServiceManager;
+    if (mListener)
+        delete mListener;
+}
+
+int DhcpClient::start(const char *interface) {
+
+    char svc[PROPERTY_VALUE_MAX];
+    snprintf(svc, sizeof(svc), "dhcpcd_ng:%s", interface);
+
+    if (mServiceManager->start(svc)) {
+        LOGE("Failed to start dhcp service");
+        return -1;
+    }
+
+    mListener = new DhcpListener(mHandlers);
+    if (mListener->startListener()) {
+        LOGE("Failed to start listener");
+#if 0
+        mServiceManager->stop("dhcpcd_ng");
+        return -1;
+#endif
+        delete mListener;
+        mListener = NULL;
+    }
+
+    mState = DhcpState::STARTED;
+
+    return 0;
+}
+
+int DhcpClient::stop() {
+    if (mListener) {
+        mListener->stopListener();
+        delete mListener;
+        mListener = NULL;
+    }
+
+    if (mServiceManager->stop("dhcpcd_ng")) 
+        LOGW("Failed to stop DHCP service (%s)", strerror(errno));
+    mState = DhcpState::STOPPED;
+    return 0;
+}

nexus/DhcpClient.h

@@ -0,0 +1,41 @@
+
+/*
+ * 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 _DhcpClient_H
+#define _DhcpClient_H
+
+class IDhcpEventHandlers;
+class ServiceManager;
+class DhcpListener;
+
+class DhcpClient {
+    int                mState;
+    IDhcpEventHandlers *mHandlers;
+    ServiceManager     *mServiceManager;
+    DhcpListener       *mListener;
+
+public:
+    DhcpClient(IDhcpEventHandlers *handlers);
+    virtual ~DhcpClient();
+
+    int getState() { return mState; }
+
+    int start(const char *interface);
+    int stop();
+};
+
+#endif

nexus/DhcpListener.cpp

@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "DhcpListener"
+#include <cutils/log.h>
+
+#include <DhcpListener.h>
+#include "IDhcpEventHandlers.h"
+
+DhcpListener::DhcpListener(IDhcpEventHandlers *handlers) :
+              SocketListener("dhcp_ng", false) {
+    mHandlers = handlers;
+}
+
+DhcpListener::~DhcpListener() {
+}
+
+bool DhcpListener::onDataAvailable(SocketClient *cli) {
+    LOGD("onDataAvailable()");
+    return true;
+}

nexus/DhcpListener.h

@@ -0,0 +1,36 @@
+/*
+ * 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 _DhcpListener_H
+#define _DhcpListener_H
+
+#include <sysutils/SocketListener.h>
+
+class IDhcpEventHandlers;
+
+class DhcpListener : public SocketListener {
+    IDhcpEventHandlers *mHandlers;
+
+public:
+
+    DhcpListener(IDhcpEventHandlers *handlers);
+    virtual ~DhcpListener();
+
+private:
+    bool onDataAvailable(SocketClient *cli);
+};
+
+#endif

nexus/DhcpState.h

@@ -0,0 +1,27 @@
+/*
+ * 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 _DhcpState_H
+#define _DhcpState_H
+
+class DhcpState {
+public:
+    static const int UNKNOWN = 0;
+    static const int STOPPED = 1;
+    static const int STARTED = 2;
+};
+
+#endif

nexus/IDhcpEventHandlers.h

@@ -0,0 +1,25 @@
+
+/*
+ * 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 _IDhcpEventHandlers_H
+#define _IDhcpEventHandlers_H
+
+class IDhcpEventHandlers {
+public:
+};
+
+#endif