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/*
* 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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