/*
* Function: setFileCon
* Purpose: set the security context of a file object
* Parameters:
* path: the location of the file system object
* con: the new security context of the file system object
* Returns: true on success, false on error
* Exception: NullPointerException is thrown if either path or context strign are NULL
*/
static jboolean setFileCon(JNIEnv *env, jobject clazz, jstring path, jstring con) {
#ifdef HAVE_SELINUX
if (isSELinuxDisabled)
return false;
if (path == NULL) {
throw_NullPointerException(env, "Trying to change the security context of a NULL file object.");
return false;
}
if (con == NULL) {
throw_NullPointerException(env, "Trying to set the security context of a file object with NULL.");
return false;
}
const char *objectPath = env->GetStringUTFChars(path, NULL);
const char *constant_con = env->GetStringUTFChars(con, NULL);
// GetStringUTFChars returns const char * yet setfilecon needs char *
char *newCon = const_cast<char *>(constant_con);
int ret;
if ((ret = setfilecon(objectPath, newCon)) == -1)
goto bail;
ALOGV("setFileCon: Succesfully set security context '%s' for '%s'", newCon, objectPath);
bail:
env->ReleaseStringUTFChars(path, objectPath);
env->ReleaseStringUTFChars(con, constant_con);
return (ret == 0) ? true : false;
#else
return false;
#endif
}
JNIEXPORT void JNICALL Java_jp_marisa_KeysetNative_push_1back__Ljp_marisa_KeyNative_2B(JNIEnv *env, jobject pthis, jobject key, jbyte end_marker) {
marisa::Keyset* native_keyset = ensure_create_keyset(env, pthis);
if (native_keyset == NULL) {
throw_NullPointerException(env, "handle is null");
return;
}
if (key == NULL) {
throw_NullPointerException(env, "key is null");
return;
}
marisa::Key* native_key = get_key(env, key);
if (native_keyset == NULL) {
throw_NullPointerException(env, "key is null");
return;
}
try {
native_keyset->push_back(*native_key, (char)end_marker);
} catch (const marisa::Exception& ex) {
throw_MarisaException(env, ex.filename(), ex.line(), ex.error_code(), ex.error_message());
return;
}
}
JNIEXPORT void JNICALL Java_jp_marisa_KeysetNative_swap(JNIEnv *env, jobject pthis, jobject rhs) {
marisa::Keyset* native_keyset = ensure_create_keyset(env, pthis);
if (native_keyset == NULL) {
throw_NullPointerException(env, "handle is null");
return;
}
if (rhs == NULL) {
throw_NullPointerException(env, "rhs is null");
return;
}
marisa::Keyset* native_rhs = ensure_create_keyset(env, rhs);
if (native_rhs == NULL) {
throw_NullPointerException(env, "rhs is null");
return;
}
try {
native_keyset->swap(*native_rhs);
} catch (const marisa::Exception& ex) {
throw_MarisaException(env, ex.filename(), ex.line(), ex.error_code(), ex.error_message());
return;
}
}
JNIEXPORT void JNICALL Java_jp_marisa_KeysetNative_push_1back___3BIIF(JNIEnv *env, jobject pthis, jbyteArray ptr, jint start, jint length, jfloat weight) {
marisa::Keyset* native_keyset = ensure_create_keyset(env, pthis);
if (native_keyset == NULL) {
throw_NullPointerException(env, "handle is null");
return;
}
if (ptr == NULL) {
throw_NullPointerException(env, "ptr is null");
return;
}
jbyte* native_ptr = env->GetByteArrayElements(ptr, NULL);
native_ptr += start;
try {
native_keyset->push_back((const char *)native_ptr, length, weight);
} catch (const marisa::Exception& ex) {
env->ReleaseByteArrayElements(ptr, native_ptr, JNI_ABORT);
throw_MarisaException(env, ex.filename(), ex.line(), ex.error_code(), ex.error_message());
return;
}
env->ReleaseByteArrayElements(ptr, native_ptr, JNI_ABORT);
}
/*
* Function: getFileCon
* Purpose: retrieves the context associated with the given path in the file system
* Parameters:
* path: given path in the file system
* Returns:
* string representing the security context string of the file object
* the string may be NULL if an error occured
* Exceptions: NullPointerException if the path object is null
*/
static jstring getFileCon(JNIEnv *env, jobject clazz, jstring path) {
#ifdef HAVE_SELINUX
if (isSELinuxDisabled)
return NULL;
if (path == NULL) {
throw_NullPointerException(env, "Trying to check security context of a null path.");
return NULL;
}
const char *objectPath = env->GetStringUTFChars(path, NULL);
security_context_t context = NULL;
jstring securityString = NULL;
if (getfilecon(objectPath, &context) == -1)
goto bail;
ALOGV("getFileCon: Successfully retrived context '%s' for file '%s'", context, objectPath);
securityString = env->NewStringUTF(context);
bail:
if (context != NULL)
freecon(context);
env->ReleaseStringUTFChars(path, objectPath);
return securityString;
#else
return NULL;
#endif
}
JNIEXPORT void JNICALL Java_jp_marisa_AgentNative_set_1query___3BII(JNIEnv *env, jobject pthis, jbyteArray str, jint start, jint length) {
marisa::Agent* native_agent = ensure_create_agent(env, pthis);
if (native_agent == NULL) {
throw_NullPointerException(env, "handle is null");
return;
}
// marisa::Agent::set_query set only pointer address.
// so, we need copy of str.
jbyte* native_str = env->GetByteArrayElements(str, NULL);
native_str += start;
char* copy_str = new char[length];
memcpy(copy_str, native_str, length);
env->ReleaseByteArrayElements(str, native_str, JNI_ABORT);
try {
native_agent->set_query(copy_str, length);
} catch (const marisa::Exception& ex) {
throw_MarisaException(env, ex.filename(), ex.line(), ex.error_code(), ex.error_message());
return;
}
jlong handle = get_stringBufferHandle_value(env, pthis);
if (handle != -1) {
delete [] (char *)handle;
}
set_stringBufferHandle_value(env, pthis, (jlong)copy_str);
}
static void
acquireWakeLock(JNIEnv *env, jobject clazz, jint lock, jstring idObj)
{
if (idObj == NULL) {
throw_NullPointerException(env, "id is null");
return ;
}
const char *id = env->GetStringUTFChars(idObj, NULL);
acquire_wake_lock(lock, id);
env->ReleaseStringUTFChars(idObj, id);
}
JNIEXPORT void JNICALL Java_jp_marisa_AgentNative_set_1query__J(JNIEnv *env, jobject pthis, jlong key_id) {
marisa::Agent* native_agent = ensure_create_agent(env, pthis);
if (native_agent == NULL) {
throw_NullPointerException(env, "handle is null");
return;
}
try {
native_agent->set_query(static_cast<std::size_t>(key_id));
} catch (const marisa::Exception& ex) {
throw_MarisaException(env, ex.filename(), ex.line(), ex.error_code(), ex.error_message());
return;
}
}
/*
* Function: getPeerCon
* Purpose: retrieves security context of peer socket
* Parameters:
* fileDescriptor: peer socket file as a FileDescriptor object
* Returns: jstring representing the security_context of socket or NULL if error
* Exceptions: NullPointerException if fileDescriptor object is NULL
*/
static jstring getPeerCon(JNIEnv *env, jobject clazz, jobject fileDescriptor) {
#ifdef HAVE_SELINUX
if (isSELinuxDisabled)
return NULL;
if (fileDescriptor == NULL) {
throw_NullPointerException(env, "Trying to check security context of a null peer socket.");
return NULL;
}
security_context_t context = NULL;
jstring securityString = NULL;
int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
if (env->ExceptionOccurred() != NULL) {
ALOGE("There was an issue with retrieving the file descriptor");
goto bail;
}
if (getpeercon(fd, &context) == -1)
goto bail;
ALOGV("getPeerCon: Successfully retrived context of peer socket '%s'", context);
securityString = env->NewStringUTF(context);
bail:
if (context != NULL)
freecon(context);
return securityString;
#else
return NULL;
#endif
}
