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/*
* Copyright (C) NGINX, Inc.
*/
#include <nxt_auto_config.h>
#include <jni.h>
#include <nxt_unit.h>
#include "nxt_jni.h"
#include "nxt_jni_OutputStream.h"
#include "nxt_jni_URLClassLoader.h"
static void JNICALL nxt_java_OutputStream_writeByte(JNIEnv *env, jclass cls,
jlong req_info_ptr, jint b);
static nxt_unit_buf_t *nxt_java_OutputStream_req_buf(JNIEnv *env,
nxt_unit_request_info_t *req);
static void JNICALL nxt_java_OutputStream_write(JNIEnv *env, jclass cls,
jlong req_info_ptr, jarray b, jint off, jint len);
static void JNICALL nxt_java_OutputStream_flush(JNIEnv *env, jclass cls,
jlong req_info_ptr);
static void JNICALL nxt_java_OutputStream_close(JNIEnv *env, jclass cls,
jlong req_info_ptr);
static jclass nxt_java_OutputStream_class;
int
nxt_java_initOutputStream(JNIEnv *env, jobject cl)
{
int res;
jclass cls;
cls = nxt_java_loadClass(env, cl, "nginx.unit.OutputStream");
if (cls == NULL) {
return NXT_UNIT_ERROR;
}
nxt_java_OutputStream_class = (*env)->NewGlobalRef(env, cls);
(*env)->DeleteLocalRef(env, cls);
cls = nxt_java_OutputStream_class;
JNINativeMethod os_methods[] = {
{ (char *) "write",
(char *) "(JI)V",
nxt_java_OutputStream_writeByte },
{ (char *) "write",
(char *) "(J[BII)V",
nxt_java_OutputStream_write },
{ (char *) "flush",
(char *) "(J)V",
nxt_java_OutputStream_flush },
{ (char *) "close",
(char *) "(J)V",
nxt_java_OutputStream_close },
};
res = (*env)->RegisterNatives(env, nxt_java_OutputStream_class,
os_methods,
sizeof(os_methods) / sizeof(os_methods[0]));
nxt_unit_debug(NULL, "registered OutputStream methods: %d", res);
if (res != 0) {
(*env)->DeleteGlobalRef(env, cls);
return NXT_UNIT_ERROR;
}
return NXT_UNIT_OK;
}
static void JNICALL
nxt_java_OutputStream_writeByte(JNIEnv *env, jclass cls, jlong req_info_ptr,
jint b)
{
nxt_unit_buf_t *buf;
nxt_unit_request_info_t *req;
nxt_java_request_data_t *data;
req = nxt_jlong2ptr(req_info_ptr);
data = req->data;
buf = nxt_java_OutputStream_req_buf(env, req);
if (buf == NULL) {
return;
}
*buf->free++ = b;
if ((uint32_t) (buf->free - buf->start) >= data->buf_size) {
nxt_java_OutputStream_flush_buf(env, req);
}
}
int
nxt_java_OutputStream_flush_buf(JNIEnv *env, nxt_unit_request_info_t *req)
{
int rc;
nxt_java_request_data_t *data;
data = req->data;
if (!nxt_unit_response_is_init(req)) {
rc = nxt_unit_response_init(req, 200, 0, 0);
if (rc != NXT_UNIT_OK) {
nxt_java_throw_IOException(env, "Failed to allocate response");
return rc;
}
}
if (!nxt_unit_response_is_sent(req)) {
rc = nxt_unit_response_send(req);
if (rc != NXT_UNIT_OK) {
nxt_java_throw_IOException(env, "Failed to send response headers");
return rc;
}
}
if (data->buf != NULL) {
rc = nxt_unit_buf_send(data->buf);
if (rc != NXT_UNIT_OK) {
nxt_java_throw_IOException(env, "Failed to send buffer");
} else {
data->buf = NULL;
}
} else {
rc = NXT_UNIT_OK;
}
return rc;
}
static nxt_unit_buf_t *
nxt_java_OutputStream_req_buf(JNIEnv *env, nxt_unit_request_info_t *req)
{
uint32_t size;
nxt_unit_buf_t *buf;
nxt_java_request_data_t *data;
data = req->data;
buf = data->buf;
if (buf == NULL || buf->free >= buf->end) {
size = data->buf_size == 0 ? nxt_unit_buf_min() : data->buf_size;
buf = nxt_unit_response_buf_alloc(req, size);
if (buf == NULL) {
nxt_java_throw_IOException(env, "Failed to allocate buffer");
return NULL;
}
data->buf = buf;
}
return buf;
}
static void JNICALL
nxt_java_OutputStream_write(JNIEnv *env, jclass cls, jlong req_info_ptr,
jarray b, jint off, jint len)
{
int rc;
jint copy;
uint8_t *ptr;
nxt_unit_buf_t *buf;
nxt_unit_request_info_t *req;
nxt_java_request_data_t *data;
req = nxt_jlong2ptr(req_info_ptr);
data = req->data;
ptr = (*env)->GetPrimitiveArrayCritical(env, b, NULL);
while (len > 0) {
buf = nxt_java_OutputStream_req_buf(env, req);
if (buf == NULL) {
return;
}
copy = buf->end - buf->free;
copy = copy < len ? copy : len;
memcpy(buf->free, ptr + off, copy);
buf->free += copy;
len -= copy;
off += copy;
if ((uint32_t) (buf->free - buf->start) >= data->buf_size) {
rc = nxt_java_OutputStream_flush_buf(env, req);
if (rc != NXT_UNIT_OK) {
break;
}
}
}
(*env)->ReleasePrimitiveArrayCritical(env, b, ptr, 0);
}
static void JNICALL
nxt_java_OutputStream_flush(JNIEnv *env, jclass cls, jlong req_info_ptr)
{
nxt_unit_request_info_t *req;
nxt_java_request_data_t *data;
req = nxt_jlong2ptr(req_info_ptr);
data = req->data;
if (data->buf != NULL && data->buf->free > data->buf->start) {
nxt_java_OutputStream_flush_buf(env, req);
}
}
static void JNICALL
nxt_java_OutputStream_close(JNIEnv *env, jclass cls, jlong req_info_ptr)
{
nxt_java_OutputStream_flush_buf(env, nxt_jlong2ptr(req_info_ptr));
}
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