diff options
Diffstat (limited to 'java/jni/ZT1_jnilookup.cpp')
| -rw-r--r-- | java/jni/ZT1_jnilookup.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/java/jni/ZT1_jnilookup.cpp b/java/jni/ZT1_jnilookup.cpp new file mode 100644 index 00000000..d8f5cc7f --- /dev/null +++ b/java/jni/ZT1_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 "ZT1_jnilookup.h" +#include "ZT1_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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