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/* $Id$ */
/*
* Copyright (C) 2015-2016 Teluu Inc. (http://www.teluu.com)
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* This original code was kindly contributed by Johan Lantz.
*/
#include <pj/guid.h>
#include <pj/log.h>
#include <pj/string.h>
#include <jni.h>
extern JavaVM *pj_jni_jvm;
static pj_bool_t attach_jvm(JNIEnv **jni_env)
{
if ((*pj_jni_jvm)->GetEnv(pj_jni_jvm, (void **)jni_env,
JNI_VERSION_1_4) < 0)
{
if ((*pj_jni_jvm)->AttachCurrentThread(pj_jni_jvm, jni_env, NULL) < 0)
{
jni_env = NULL;
return PJ_FALSE;
}
return PJ_TRUE;
}
return PJ_FALSE;
}
#define detach_jvm(attached) \
if (attached) \
(*pj_jni_jvm)->DetachCurrentThread(pj_jni_jvm);
PJ_DEF_DATA(const unsigned) PJ_GUID_STRING_LENGTH=36;
PJ_DEF(unsigned) pj_GUID_STRING_LENGTH()
{
return PJ_GUID_STRING_LENGTH;
}
PJ_DEF(pj_str_t*) pj_generate_unique_string(pj_str_t *str)
{
jclass uuid_class;
jmethodID get_uuid_method;
jmethodID to_string_method;
JNIEnv *jni_env = 0;
jobject javaUuid;
jstring uuid_string;
const char *native_string;
pj_str_t native_str;
pj_bool_t attached = attach_jvm(&jni_env);
if (!jni_env)
goto on_error;
uuid_class = (jclass)(*jni_env)->NewGlobalRef(jni_env,
(*jni_env)->FindClass(jni_env, "java/util/UUID"));
if (uuid_class == 0)
goto on_error;
get_uuid_method = (*jni_env)->GetStaticMethodID(jni_env, uuid_class,
"randomUUID",
"()Ljava/util/UUID;");
if (get_uuid_method == 0)
goto on_error;
javaUuid = (*jni_env)->CallStaticObjectMethod(jni_env, uuid_class,
get_uuid_method);
if (javaUuid == 0)
goto on_error;
to_string_method = (*jni_env)->GetMethodID(jni_env, uuid_class,
"toString",
"()Ljava/lang/String;");
if (to_string_method == 0)
goto on_error;
uuid_string = (*jni_env)->CallObjectMethod(jni_env, javaUuid,
to_string_method);
if (uuid_string == 0)
goto on_error;
native_string = (*jni_env)->GetStringUTFChars(jni_env, uuid_string,
JNI_FALSE);
if (native_string == 0)
goto on_error;
native_str.ptr = (char *)native_string;
native_str.slen = pj_ansi_strlen(native_string);
pj_strncpy(str, &native_str, PJ_GUID_STRING_LENGTH);
(*jni_env)->ReleaseStringUTFChars(jni_env, uuid_string, native_string);
detach_jvm(attached);
return str;
on_error:
PJ_LOG(2, ("guid_android.c", ("Error generating UUID")));
detach_jvm(attached);
return NULL;
}
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