Merge "Remove obsolete file" into nyc-dev
This commit is contained in:
Rubin Xu
@@ -1,312 +0,0 @@
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <fcntl.h>
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#include "JNIHelp.h"
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#include "core_jni_helpers.h"
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#include "jni.h"
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#include "log/logger.h"
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// The size of the tag number comes out of the payload size.
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#define MAX_EVENT_PAYLOAD (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(int32_t))
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namespace android {
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static jclass gCollectionClass;
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static jmethodID gCollectionAddID;
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static jclass gEventClass;
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static jmethodID gEventInitID;
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static jclass gIntegerClass;
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static jfieldID gIntegerValueID;
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static jclass gLongClass;
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static jfieldID gLongValueID;
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static jclass gFloatClass;
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static jfieldID gFloatValueID;
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static jclass gStringClass;
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static jboolean android_auditing_SecurityLog_isLoggingEnabled(JNIEnv* env,
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jobject /* clazz */) {
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return (bool)__android_log_security();
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}
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static jint android_auditing_SecurityLog_writeEvent_String(JNIEnv* env,
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jobject /* clazz */,
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jint tag, jstring value) {
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uint8_t buf[MAX_EVENT_PAYLOAD];
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// Don't throw NPE -- I feel like it's sort of mean for a logging function
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// to be all crashy if you pass in NULL -- but make the NULL value explicit.
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const char *str = value != NULL ? env->GetStringUTFChars(value, NULL) : "NULL";
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uint32_t len = strlen(str);
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size_t max = sizeof(buf) - sizeof(len) - 2; // Type byte, final newline
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if (len > max) len = max;
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buf[0] = EVENT_TYPE_STRING;
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memcpy(&buf[1], &len, sizeof(len));
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memcpy(&buf[1 + sizeof(len)], str, len);
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buf[1 + sizeof(len) + len] = '\n';
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if (value != NULL) env->ReleaseStringUTFChars(value, str);
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return __android_log_security_bwrite(tag, buf, 2 + sizeof(len) + len);
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}
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static jint android_auditing_SecurityLog_writeEvent_Array(JNIEnv* env, jobject clazz,
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jint tag, jobjectArray value) {
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if (value == NULL) {
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return android_auditing_SecurityLog_writeEvent_String(env, clazz, tag, NULL);
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}
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uint8_t buf[MAX_EVENT_PAYLOAD];
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const size_t max = sizeof(buf) - 1; // leave room for final newline
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size_t pos = 2; // Save room for type tag & array count
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jsize copied = 0, num = env->GetArrayLength(value);
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for (; copied < num && copied < 255; ++copied) {
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jobject item = env->GetObjectArrayElement(value, copied);
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if (item == NULL || env->IsInstanceOf(item, gStringClass)) {
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if (pos + 1 + sizeof(jint) > max) break;
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const char *str = item != NULL ? env->GetStringUTFChars((jstring) item, NULL) : "NULL";
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jint len = strlen(str);
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if (pos + 1 + sizeof(len) + len > max) len = max - pos - 1 - sizeof(len);
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buf[pos++] = EVENT_TYPE_STRING;
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memcpy(&buf[pos], &len, sizeof(len));
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memcpy(&buf[pos + sizeof(len)], str, len);
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pos += sizeof(len) + len;
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if (item != NULL) env->ReleaseStringUTFChars((jstring) item, str);
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} else if (env->IsInstanceOf(item, gIntegerClass)) {
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jint intVal = env->GetIntField(item, gIntegerValueID);
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if (pos + 1 + sizeof(intVal) > max) break;
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buf[pos++] = EVENT_TYPE_INT;
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memcpy(&buf[pos], &intVal, sizeof(intVal));
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pos += sizeof(intVal);
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} else if (env->IsInstanceOf(item, gLongClass)) {
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jlong longVal = env->GetLongField(item, gLongValueID);
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if (pos + 1 + sizeof(longVal) > max) break;
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buf[pos++] = EVENT_TYPE_LONG;
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memcpy(&buf[pos], &longVal, sizeof(longVal));
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pos += sizeof(longVal);
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} else if (env->IsInstanceOf(item, gFloatClass)) {
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jfloat floatVal = env->GetFloatField(item, gFloatValueID);
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if (pos + 1 + sizeof(floatVal) > max) break;
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buf[pos++] = EVENT_TYPE_FLOAT;
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memcpy(&buf[pos], &floatVal, sizeof(floatVal));
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pos += sizeof(floatVal);
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} else {
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jniThrowException(env,
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"java/lang/IllegalArgumentException",
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"Invalid payload item type");
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return -1;
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}
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env->DeleteLocalRef(item);
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}
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buf[0] = EVENT_TYPE_LIST;
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buf[1] = copied;
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buf[pos++] = '\n';
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return __android_log_security_bwrite(tag, buf, pos);
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}
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static void readEvents(JNIEnv* env, int loggerMode, jlong startTime, jobject out) {
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struct logger_list *logger_list;
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if (startTime) {
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logger_list = android_logger_list_alloc_time(loggerMode,
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log_time(startTime / NS_PER_SEC, startTime % NS_PER_SEC), 0);
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} else {
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logger_list = android_logger_list_alloc(loggerMode, 0, 0);
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}
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if (!logger_list) {
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jniThrowIOException(env, errno);
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return;
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}
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if (!android_logger_open(logger_list, LOG_ID_SECURITY)) {
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jniThrowIOException(env, errno);
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android_logger_list_free(logger_list);
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return;
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}
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while (1) {
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log_msg log_msg;
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int ret = android_logger_list_read(logger_list, &log_msg);
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if (ret == 0) {
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break;
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}
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if (ret < 0) {
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if (ret == -EINTR) {
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continue;
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}
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if (ret == -EINVAL) {
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jniThrowException(env, "java/io/IOException", "Event too short");
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} else if (ret != -EAGAIN) {
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jniThrowIOException(env, -ret); // Will throw on return
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}
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break;
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}
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if (log_msg.id() != LOG_ID_SECURITY) {
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continue;
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}
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jsize len = ret;
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jbyteArray array = env->NewByteArray(len);
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if (array == NULL) {
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break;
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}
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jbyte *bytes = env->GetByteArrayElements(array, NULL);
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memcpy(bytes, log_msg.buf, len);
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env->ReleaseByteArrayElements(array, bytes, 0);
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jobject event = env->NewObject(gEventClass, gEventInitID, array);
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if (event == NULL) {
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break;
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}
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env->CallBooleanMethod(out, gCollectionAddID, event);
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env->DeleteLocalRef(event);
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env->DeleteLocalRef(array);
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}
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android_logger_list_close(logger_list);
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}
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static void android_auditing_SecurityLog_readEvents(JNIEnv* env, jobject /* clazz */,
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jobject out) {
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if (out == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 0, out);
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}
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static void android_auditing_SecurityLog_readEventsSince(JNIEnv* env, jobject /* clazz */,
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jlong timestamp,
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jobject out) {
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if (out == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, timestamp, out);
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}
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static void android_auditing_SecurityLog_readPreviousEvents(JNIEnv* env, jobject /* clazz */,
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jobject out) {
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if (out == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK | ANDROID_LOG_PSTORE, 0, out);
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}
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static void android_auditing_SecurityLog_readEventsOnWrapping(JNIEnv* env, jobject /* clazz */,
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jlong timestamp,
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jobject out) {
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if (out == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK | ANDROID_LOG_WRAP, timestamp, out);
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}
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/*
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* JNI registration.
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*/
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static const JNINativeMethod gRegisterMethods[] = {
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/* name, signature, funcPtr */
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{ "isLoggingEnabled",
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"()Z",
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(void*) android_auditing_SecurityLog_isLoggingEnabled
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},
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{ "writeEvent",
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"(ILjava/lang/String;)I",
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(void*) android_auditing_SecurityLog_writeEvent_String
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},
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{ "writeEvent",
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"(I[Ljava/lang/Object;)I",
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(void*) android_auditing_SecurityLog_writeEvent_Array
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},
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{ "readEvents",
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"(Ljava/util/Collection;)V",
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(void*) android_auditing_SecurityLog_readEvents
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},
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{ "readEventsSince",
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"(JLjava/util/Collection;)V",
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(void*) android_auditing_SecurityLog_readEventsSince
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},
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{ "readPreviousEvents",
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"(Ljava/util/Collection;)V",
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(void*) android_auditing_SecurityLog_readPreviousEvents
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},
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{ "readEventsOnWrapping",
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"(JLjava/util/Collection;)V",
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(void*) android_auditing_SecurityLog_readEventsOnWrapping
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},
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};
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static struct { const char *name; jclass *clazz; } gClasses[] = {
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{ "android/auditing/SecurityLog$SecurityEvent", &gEventClass },
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{ "java/lang/Integer", &gIntegerClass },
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{ "java/lang/Long", &gLongClass },
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{ "java/lang/Float", &gFloatClass },
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{ "java/lang/String", &gStringClass },
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{ "java/util/Collection", &gCollectionClass },
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};
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static struct { jclass *c; const char *name, *ft; jfieldID *id; } gFields[] = {
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{ &gIntegerClass, "value", "I", &gIntegerValueID },
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{ &gLongClass, "value", "J", &gLongValueID },
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{ &gFloatClass, "value", "F", &gFloatValueID },
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};
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static struct { jclass *c; const char *name, *mt; jmethodID *id; } gMethods[] = {
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{ &gEventClass, "<init>", "([B)V", &gEventInitID },
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{ &gCollectionClass, "add", "(Ljava/lang/Object;)Z", &gCollectionAddID },
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};
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int register_android_auditing_SecurityLog(JNIEnv* env) {
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for (int i = 0; i < NELEM(gClasses); ++i) {
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jclass clazz = FindClassOrDie(env, gClasses[i].name);
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*gClasses[i].clazz = MakeGlobalRefOrDie(env, clazz);
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}
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for (int i = 0; i < NELEM(gFields); ++i) {
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*gFields[i].id = GetFieldIDOrDie(env,
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*gFields[i].c, gFields[i].name, gFields[i].ft);
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}
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for (int i = 0; i < NELEM(gMethods); ++i) {
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*gMethods[i].id = GetMethodIDOrDie(env,
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*gMethods[i].c, gMethods[i].name, gMethods[i].mt);
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}
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return RegisterMethodsOrDie(
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env,
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"android/auditing/SecurityLog",
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gRegisterMethods, NELEM(gRegisterMethods));
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}
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}; // namespace android
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