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/*
* Copyright (c) 2010-2014 Balabit
* Copyright (c) 2010-2014 Viktor Juhasz <viktor.juhasz@balabit.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include <string.h>
#include "java-class-loader.h"
#include "java_machine.h"
#include "messages.h"
#include "lib/reloc.h"
#define SYSLOG_NG_CLASS_LOADER "org/syslog_ng/SyslogNgClassLoader"
#define SYSLOG_NG_JAR "syslog-ng-core.jar"
jstring
__create_class_path(ClassLoader *self, JNIEnv *java_env, const gchar *class_path)
{
GString *g_class_path = g_string_new(get_installation_path_for(SYSLOG_NG_JAVA_MODULE_PATH));
jstring str_class_path = NULL;
g_string_append(g_class_path, "/" SYSLOG_NG_JAR);
if (class_path && (strlen(class_path) > 0))
{
g_string_append_c(g_class_path, ':');
g_string_append(g_class_path, class_path);
}
str_class_path = CALL_JAVA_FUNCTION(java_env, NewStringUTF, g_class_path->str);
g_string_free(g_class_path, TRUE);
return str_class_path;
}
ClassLoader *
class_loader_new(JNIEnv *java_env)
{
ClassLoader *self = g_new0(ClassLoader, 1);
self->syslogng_class_loader = CALL_JAVA_FUNCTION(java_env, FindClass, SYSLOG_NG_CLASS_LOADER);
if (!self->syslogng_class_loader)
{
msg_error("Can't find class",
evt_tag_str("class_name", SYSLOG_NG_CLASS_LOADER));
goto error;
}
self->loader_constructor = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->syslogng_class_loader, "<init>", "()V");
if (!self->loader_constructor)
{
msg_error("Can't find constructor for SyslogNgClassLoader");
goto error;
}
self->mi_loadclass = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->syslogng_class_loader, "loadClass", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Class;");
if (!self->mi_loadclass)
{
msg_error("Can't find method in class",
evt_tag_str("class_name", SYSLOG_NG_CLASS_LOADER),
evt_tag_str("method", "Class loadClass(String className)"));
goto error;
}
self->mi_init_current_thread = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->syslogng_class_loader, "initCurrentThread", "()V");
if (!self->mi_init_current_thread)
{
msg_error("Can't find method in class",
evt_tag_str("class_name", SYSLOG_NG_CLASS_LOADER),
evt_tag_str("method", "void initCurrentThread()"));
}
self->loader_object = CALL_JAVA_FUNCTION(java_env, NewObject, self->syslogng_class_loader, self->loader_constructor);
if (!self->loader_object)
{
msg_error("Can't create SyslogNgClassLoader");
goto error;
}
return self;
error:
class_loader_free(self, java_env);
return NULL;
}
void class_loader_free(ClassLoader *self, JNIEnv *java_env)
{
if (!self)
{
return;
}
if (self->loader_object)
{
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, self->loader_object);
}
if (self->syslogng_class_loader)
{
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, self->syslogng_class_loader);
}
g_free(self);
return;
}
jclass
class_loader_load_class(ClassLoader *self, JNIEnv *java_env, const gchar *class_name, const gchar *class_path)
{
jclass result;
jstring str_class_name = CALL_JAVA_FUNCTION(java_env, NewStringUTF, class_name);
jstring str_class_path = __create_class_path(self, java_env, class_path);
result = CALL_JAVA_FUNCTION(java_env, CallObjectMethod, self->loader_object, self->mi_loadclass, str_class_name, str_class_path);
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, str_class_name);
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, str_class_path);
return result;
}
void
class_loader_init_current_thread(ClassLoader *self, JNIEnv *java_env)
{
CALL_JAVA_FUNCTION(java_env, CallVoidMethod, self->loader_object, self->mi_init_current_thread);
}
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