Implement the socket communication (#7)

JerryScript-DCO-1.0-Signed-off-by: Levente Orban orbanl@inf.u-szeged.hu

Author: Levente Orban

jerry-core/debugger/jerry-debugger.c

@@ -1 +1,114 @@
-//TODO: Implement the socket communication
+/* Copyright 2016 University of Szeged.
+ *
+ * Licensed 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.
+ */
+
+#include <errno.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "jerry-debugger.h"
+#include "jerry-port.h"
+
+#define PORT 5001
+#define BACKLOG 1
+
+static int jerry_debugger_connection;    /**< hold the file descriptor for the accepted socket */
+
+bool jerry_debugger_socket_init ()
+{
+  /* The arguments optval is used to access option values for setsockopt(). */
+  bool optval = true;
+
+  int jerry_debugger_socket;        /**< socket file descriptor for the remote communication */
+
+  struct sockaddr_in server_addr, client_addr;  /**< declarations of the socket address */
+  socklen_t sin_size = sizeof (struct sockaddr_in);  /**< size of the structure pointed by
+                                                      *   the server_addr and client_addr */
+
+  /* Server adress declaration */
+  server_addr.sin_family = AF_INET;
+  server_addr.sin_port = htons (PORT);
+  server_addr.sin_addr.s_addr = INADDR_ANY;
+  bzero (&(server_addr.sin_zero), BACKLOG);
+
+  /* Create an endpoint for communication */
+  if ((jerry_debugger_socket = socket (AF_INET, SOCK_STREAM, 0)) == -1)
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: %s\n", strerror (errno));
+    return false;
+  }
+
+  /* Set the options on socket */
+  if (setsockopt (jerry_debugger_socket, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof (int)) == -1)
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: %s\n", strerror (errno));
+    return false;
+  }
+
+  /* Bind to the server address */
+  if (bind (jerry_debugger_socket, (struct sockaddr *)&server_addr, sizeof (struct sockaddr)) == -1)
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: %s\n", strerror (errno));
+    return false;
+  }
+
+  /* Listen for connections on socket */
+  if (listen (jerry_debugger_socket, BACKLOG) == -1)
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: %s\n", strerror (errno));
+    return false;
+  }
+
+  jerry_port_log (JERRY_LOG_LEVEL_DEBUG, "Waiting for the client connection.\n");
+
+  /* Connect from the client */
+  if ((jerry_debugger_connection = accept (jerry_debugger_socket, (struct sockaddr *)&client_addr, &sin_size)) == -1)
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: %s\n", strerror (errno));
+    return false;
+  }
+
+  close (jerry_debugger_socket);
+
+  jerry_port_log (JERRY_LOG_LEVEL_DEBUG, "Connected from: %s:%d\n",
+                  inet_ntoa (client_addr.sin_addr), ntohs (client_addr.sin_port));
+
+  return true;
+} /* jerry_debugger_socket_init */
+
+/* Close the socket connection with the client */
+void jerry_debugger_connection_end ()
+{
+  jerry_port_log (JERRY_LOG_LEVEL_DEBUG, "TCPServer connection closed on port: %d\n", PORT);
+  close (jerry_debugger_connection);
+} /* jerry_debugger_connection_end */
+
+/* Send the parsed file names to the client side */
+bool jerry_debugger_send (size_t data_len) /**< data length */
+{
+  ssize_t byte_send = send (jerry_debugger_connection, jerry_debugger_buffer, data_len, 0);
+
+  while (byte_send != (ssize_t) data_len)
+  {
+    if (byte_send == -1)
+    {
+      jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: %s\n", strerror (errno));
+      return false;
+    }
+    byte_send += send (jerry_debugger_connection, jerry_debugger_buffer, data_len - (size_t) byte_send, 0);
+  }
+  return true;
+} /* jerry_debugger_send */

jerry-core/debugger/jerry-debugger.h

@@ -21,6 +21,12 @@
 
 #define MAX_BUFFER_SIZE 128
 
+extern uint8_t jerry_debugger_buffer[MAX_BUFFER_SIZE];
+
+extern bool jerry_debugger_socket_init (void);
+extern void jerry_debugger_connection_end (void);
+extern bool jerry_debugger_send (size_t data_len);
+
 /**
  * Limited resources available for the engine, so it is important to
  * check the maximum buffer size. It need to be between 64 and 256.