Add API to check whether a Cne feature is enabled.

Native class CneFeatureConfig provides API
which is used to check whether a specific
feature (as defined in class header) is enabled
or disabled on build.

Change-Id: I44c4ed7a123c5bc6cbbf7520dce5bcd47d30019a

3 files changed, 281 insertions, 0 deletions

diff --git a/cnefeatureconfig/Android.mk b/cnefeatureconfig/Android.mk
new file mode 100644
index 0000000..1ec969b
--- /dev/null
+++ b/cnefeatureconfig/Android.mk
@@ -0,0 +1,23 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_ARM_MODE := arm
+
+LOCAL_SRC_FILES:= \
+       src/CneFeatureConfig.cpp\
+
+LOCAL_MODULE:= libcnefeatureconfig
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SHARED_LIBRARIES := libc libcutils libstlport \
+
+LOCAL_C_INCLUDES := \
+        external/connectivity/cnefeatureconfig/inc \
+        external/connectivity/stlport/stlport \
+
+LOCAL_REQUIRED_MODULES := \
+        external/connectivity/stlport
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+
diff --git a/cnefeatureconfig/inc/CneFeatureConfig.h b/cnefeatureconfig/inc/CneFeatureConfig.h
new file mode 100644
index 0000000..7cab2b2
--- /dev/null
+++ b/cnefeatureconfig/inc/CneFeatureConfig.h
@@ -0,0 +1,102 @@
+#ifndef CneFeatureConfig_H
+#define CneFeatureConfig_H
+
+/*=========================================================================
+ Copyright (c) 2012, Code Aurora Forum. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Code Aurora Forum, Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+=========================================================================*/
+
+/* Enum Feature represents values to be used to
+*  query whether a feature is enabled.
+*/
+
+enum Feature {
+    CNE = 1,
+    FMC = 2,
+    WQE = 3,
+    NSRM = 4,
+};
+
+#define CNE_FEATURE_PROP "persist.cne.feature"
+
+#ifdef __cplusplus
+extern "C"
+#endif /*__cplusplus*/
+/* Provide C function to be used by JNI and other C/C++ modules.
+ *  Parameter should be one of the following values:
+ *  CNE
+ *  FMC,
+ *  WQE,
+ *  NSRM
+*/
+bool isFeatureEnabled(int f);
+
+#ifdef __cplusplus
+/* Allow clients to query what features of CNE are
+ * enabled.
+ */
+class CneFeatureConfig {
+private:
+    bool bCne;
+    bool bFmc;
+    bool bWqe;
+    bool bNsrm;
+    /* Reads the CNE_FEATURE_PROP to determine which features
+       are currently enabled.*/
+    void readFeature(void);
+
+    /* Enum FeatureProperty values represents all permissible feature values.
+     * CNE_FEATURE_PROP must have one of these values:
+     * CNE_ONLY --> bCne set true
+     * FMC_CNE --> bCne & bFmc set true
+     * WQE_CNE --> bFmc & bCne set true
+     * NSRM_CNE --> bNsrm & bCne set true
+     * FMC_NSRM_CNE --> bFmc, bNsrm, bCne set true
+     * WQE_NSRM_CNE --> bWqe, bNsrm, bCne set true
+     * Any other value will return false. By default
+     * LinkManager used if CNE disabled.
+     */
+    enum FeatureProperty {
+        LINK_MGR = 0, /* Link Manager - no CNE features enabled */
+        CNE_ONLY = 1, /* CNE only */
+        FMC_CNE = 2, /* CNE feature is prerequisite */
+        WQE_CNE = 3, /* CNE feature is prerequisite */
+        NSRM_CNE = 4, /* CNE feature is prerequisite */
+        FMC_NSRM_CNE = 5, /* CNE feature is prerequisite */
+        WQE_NSRM_CNE = 6, /* CNE feature is prerequisite */
+    };
+
+public:
+    bool isEnabled(Feature f);
+    CneFeatureConfig();
+    ~CneFeatureConfig();
+};
+
+#endif /*__cplusplus*/
+
+#endif /*CneFeatureConfig_H*/
+
diff --git a/cnefeatureconfig/src/CneFeatureConfig.cpp b/cnefeatureconfig/src/CneFeatureConfig.cpp
new file mode 100644
index 0000000..f25774b
--- /dev/null
+++ b/cnefeatureconfig/src/CneFeatureConfig.cpp
@@ -0,0 +1,156 @@
+/*==============================================================================
+Copyright (c) 2012, Code Aurora Forum. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Code Aurora Forum, Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+==============================================================================*/
+
+/*------------------------------------------------------------------------------
+* Include Files
+* ---------------------------------------------------------------------------*/
+#include <cutils/properties.h>
+#include<cstring>
+#include "CneFeatureConfig.h"
+#include <stdlib.h>
+#include <cutils/log.h>
+
+/*------------------------------------------------------------------------------
+* Preprocessor Definitions and Constants
+* ---------------------------------------------------------------------------*/
+#undef LOG_TAG
+#define LOG_TAG "CNEFEATURECONFIG"
+
+/*-----------------------------------------------------------------------------
+ * Global functions
+ * --------------------------------------------------------------------------*/
+bool isFeatureEnabled(int f)
+{
+    bool bEnabled = false;
+    CneFeatureConfig *cneFeature = new CneFeatureConfig;
+
+    if (NULL != cneFeature) {
+        bEnabled = cneFeature->isEnabled((Feature) f);
+        delete cneFeature;
+    } else {
+        LOGE("Failed to instantiate CneFeatureConfig! Default = disabled");
+    }
+
+    return bEnabled;
+}
+
+/*-----------------------------------------------------------------------------
+ * Class methods
+ * --------------------------------------------------------------------------*/
+CneFeatureConfig::CneFeatureConfig():bCne(false),
+    bFmc(false),
+    bWqe(false),
+    bNsrm(false)
+{
+}
+
+CneFeatureConfig::~CneFeatureConfig()
+{
+}
+
+/* Read the currently set feature property value.
+*/
+void CneFeatureConfig::readFeature(void) {
+    FeatureProperty val;
+    char prop_value_feature[PROPERTY_VALUE_MAX] = {'\0'};
+    property_get(CNE_FEATURE_PROP, prop_value_feature, "0");
+    val = (FeatureProperty) atoi(prop_value_feature);
+
+    switch (val) {
+        case LINK_MGR: // 0 --> Use Link Manager. Cne is completely disabled.
+        {
+            // do nothing
+            break;
+        }
+        case CNE_ONLY: // 1--> Only Cne default behavior enabled.
+        {
+             bCne = true;
+             break;
+        }
+        case FMC_CNE: // 2--> CNE enabled. FMC mode
+        {
+            bCne = true;
+            bFmc = true;
+            break;
+        }
+        case NSRM_CNE: // 3--> CNE enabled. NSRM mode.
+        {
+            bCne = true;
+            bNsrm = true;
+            break;
+        }
+        case WQE_CNE: // 4--> CNE enabled. WQE mode.
+        {
+            bCne = true;
+            bWqe = true;
+            break;
+        }
+        case FMC_NSRM_CNE: //5 --> CNE enabled. FMC & NSRM mode.
+        {
+            bCne = true;
+            bFmc = true;
+            bNsrm = true;
+            break;
+        }
+        case WQE_NSRM_CNE: //6 --> CNE enabled. WQE & NSRM mode.
+        {
+            bCne = true;
+            bWqe = true;
+            bNsrm = true;
+            break;
+        }
+        default:
+            LOGW("Unknown feature value in property. Features disabled by default");
+    }
+}
+
+bool CneFeatureConfig::isEnabled(Feature f) {
+    readFeature();
+    switch(f){
+        case CNE:
+            return bCne;
+            break;
+        case FMC:
+            return bFmc;
+            break;
+        case NSRM:
+            return bNsrm;
+            break;
+        case WQE:
+            return bWqe;
+            break;
+        default:
+            LOGW("Feature %d not known, returning default", f);
+            return false;
+    }
+
+    return false;
+}
+