Merge branch 'android-jni-dev' into edge

1 files changed, 158 insertions, 0 deletions

diff --git a/java/jni/ZT_jnilookup.cpp b/java/jni/ZT_jnilookup.cpp
new file mode 100644
index 00000000..be52a366
--- /dev/null
+++ b/java/jni/ZT_jnilookup.cpp
@@ -0,0 +1,158 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#include "ZT_jnilookup.h"
+#include "ZT_jniutils.h"
+
+JniLookup::JniLookup()
+    : m_jvm(NULL)
+{
+    LOGV("JNI Cache Created");
+}
+
+JniLookup::JniLookup(JavaVM *jvm)
+    : m_jvm(jvm)
+{
+    LOGV("JNI Cache Created");
+}
+
+JniLookup::~JniLookup()
+{
+    LOGV("JNI Cache Destroyed");
+}
+
+
+void JniLookup::setJavaVM(JavaVM *jvm)
+{ 
+    LOGV("Assigned JVM to object");
+    m_jvm = jvm; 
+}
+
+
+jclass JniLookup::findClass(const std::string &name)
+{
+    if(!m_jvm)
+        return NULL;
+
+    // get the class from the JVM
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        LOGE("Error retreiving JNI Environment");
+        return NULL;
+    }
+
+    jclass cls = env->FindClass(name.c_str());
+    if(env->ExceptionCheck())
+    {
+        LOGE("Error finding class: %s", name.c_str());
+        return NULL;
+    }
+
+    return cls;
+}
+
+
+jmethodID JniLookup::findMethod(jclass cls, const std::string &methodName, const std::string &methodSig)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jmethodID mid = env->GetMethodID(cls, methodName.c_str(), methodSig.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return mid;
+}
+
+jmethodID JniLookup::findStaticMethod(jclass cls, const std::string &methodName, const std::string &methodSig)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jmethodID mid = env->GetStaticMethodID(cls, methodName.c_str(), methodSig.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return mid;
+}
+
+jfieldID JniLookup::findField(jclass cls, const std::string &fieldName, const std::string &typeStr)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jfieldID fid = env->GetFieldID(cls, fieldName.c_str(), typeStr.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return fid;
+}
+
+jfieldID JniLookup::findStaticField(jclass cls, const std::string &fieldName, const std::string &typeStr)
+{
+    if(!m_jvm)
+        return NULL;
+
+    JNIEnv *env = NULL;
+    if(m_jvm->GetEnv((void**)&env, JNI_VERSION_1_6) != JNI_OK)
+    {
+        return NULL;
+    }
+
+    jfieldID fid = env->GetStaticFieldID(cls, fieldName.c_str(), typeStr.c_str());
+    if(env->ExceptionCheck())
+    {
+        return NULL;
+    }
+
+    return fid;
+}
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