1 files changed, 174 insertions, 0 deletions
diff --git a/subversion/bindings/javahl/native/org_apache_subversion_javahl_util_TunnelChannel.cpp b/subversion/bindings/javahl/native/org_apache_subversion_javahl_util_TunnelChannel.cpp
new file mode 100644
index 0000000..b18f3fc
--- /dev/null
+++ b/subversion/bindings/javahl/native/org_apache_subversion_javahl_util_TunnelChannel.cpp
@@ -0,0 +1,174 @@
+/**
+ * @copyright
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ * @endcopyright
+ *
+ * @file org_apache_subversion_javahl_util_TunnelChannel.cpp
+ * @brief Implementation of the native methods in the Java classes
+ *        TunnelChannel, RequestChannel and ResponseChannel
+ */
+
+#include <string>
+
+#include <apr_file_io.h>
+
+#include "../include/org_apache_subversion_javahl_util_TunnelChannel.h"
+#include "../include/org_apache_subversion_javahl_util_RequestChannel.h"
+#include "../include/org_apache_subversion_javahl_util_ResponseChannel.h"
+
+#include "jniwrapper/jni_exception.hpp"
+#include "jniwrapper/jni_channel.hpp"
+#include "jniwrapper/jni_stack.hpp"
+
+#include "svn_private_config.h"
+
+namespace {
+apr_file_t* get_file_descriptor(Java::Env env, jlong jfd)
+{
+  apr_file_t* fd = reinterpret_cast<apr_file_t*>(jfd);
+  if (!fd)
+    Java::NullPointerException(env).raise("nativeChannel");
+  return fd;
+}
+
+void throw_IOException(Java::Env env, const char* message,
+                       apr_status_t status)
+{
+  char buf[1024];
+  std::string msg(message);
+  apr_strerror(status, buf, sizeof(buf) - 1);
+  msg += buf;
+  Java::IOException(env).raise(msg.c_str());
+}
+
+class TunnelReader : public Java::ChannelReader
+{
+public:
+  explicit TunnelReader(Java::Env env, jlong jnative_channel)
+    : m_fd(get_file_descriptor(env, jnative_channel))
+    {}
+
+  virtual jint operator()(Java::Env env, void* buffer, jint length)
+    {
+      if (!length)
+        return 0;
+
+      apr_size_t bytes_read = length;
+      const apr_status_t status = apr_file_read(m_fd, buffer, &bytes_read);
+      if (status && !APR_STATUS_IS_EOF(status))
+        {
+          throw_IOException(
+              env, _("Error reading from native file handle: "),
+              status);
+          return -1;
+        }
+      if (APR_STATUS_IS_EOF(status))
+        return -1;
+      return jint(bytes_read);
+    }
+
+private:
+  apr_file_t* const m_fd;
+};
+
+class TunnelWriter : public Java::ChannelWriter
+{
+public:
+  explicit TunnelWriter(Java::Env env, jlong jnative_channel)
+    : m_fd(get_file_descriptor(env, jnative_channel))
+    {}
+
+  virtual jint operator()(Java::Env env, const void* buffer, jint length)
+    {
+      if (!length)
+        return 0;
+
+      apr_size_t bytes_written;
+      const apr_status_t status =
+        apr_file_write_full(m_fd, buffer, length, &bytes_written);
+      if (status)
+        {
+          throw_IOException(
+              env, _("Error writing to native file handle: "),
+              status);
+          return -1;
+        }
+      return jint(bytes_written);
+    }
+
+private:
+  apr_file_t* const m_fd;
+};
+
+} // anonymous namespace
+
+
+JNIEXPORT void JNICALL
+Java_org_apache_subversion_javahl_util_TunnelChannel_nativeClose(
+    JNIEnv* jenv, jclass jclazz, jlong jnative_channel)
+{
+  SVN_JAVAHL_JNI_TRY_STATIC(TunnelChannel, close)
+    {
+      const Java::Env env(jenv);
+
+      apr_file_t* const fd = get_file_descriptor(env, jnative_channel);
+      if (!fd)
+        return;
+
+      const apr_status_t status = apr_file_close(fd);
+      if (status)
+        throw_IOException(
+            env, _("Error closing native file handle: "),
+            status);
+    }
+  SVN_JAVAHL_JNI_CATCH;
+}
+
+JNIEXPORT jint JNICALL
+Java_org_apache_subversion_javahl_util_RequestChannel_nativeRead(
+    JNIEnv* jenv, jclass jclazz, jlong jnative_channel, jobject jdst_buffer)
+{
+  SVN_JAVAHL_JNI_TRY_STATIC(RequestChannel, read)
+    {
+      const Java::Env env(jenv);
+
+      TunnelReader reader(env, jnative_channel);
+      Java::ReadableByteChannel channel(env, reader);
+      return channel.read(jdst_buffer);
+    }
+  SVN_JAVAHL_JNI_CATCH;
+  return -1;
+}
+
+JNIEXPORT jint JNICALL
+Java_org_apache_subversion_javahl_util_ResponseChannel_nativeWrite(
+    JNIEnv* jenv, jclass jclazz, jlong jnative_channel, jobject jsrc_buffer)
+{
+  SVN_JAVAHL_JNI_TRY_STATIC(ResponseChannel, write)
+    {
+      const Java::Env env(jenv);
+
+      TunnelWriter writer(env, jnative_channel);
+      Java::WritableByteChannel channel(env, writer);
+      return channel.write(jsrc_buffer);
+    }
+  SVN_JAVAHL_JNI_CATCH;
+  return -1;
+}