Create basic structure for send/recv file

Author: coditva

include/buffer.h

@@ -38,9 +38,11 @@ int buffer_read_packet  (buffer_t *, packet_t *);
 
 int recv_buffer_write   (char *data, int len);
 int recv_buffer_read    (char *data, int len);
+int recv_file_buffer_read       (int, int *, int, int);
 
 int send_buffer_write           (char *data, int len);
 int send_packet_buffer_write    (packet_t *);
 int send_packet_buffer_read     (packet_t *);
+int send_file_buffer_write      (int, int, int, int);
 
 #endif /* end of include guard: BUFFER_H_IBSOFJRY */

include/udt.h

@@ -101,25 +101,25 @@ int         udt_send    (socket_t, char *, int, int);
  * Receive a file from the socket
  *
  * @param   socket_t    The socket to receive from
- * @param   void*       Pointer to the file to store incoming data
+ * @param   int         The file descriptor to a writable open file
  * @param   int64_t     The offset position to store. After transfer, contains
  *                      new offset
  * @param   int64_t     The total size to be received
  * @param   int         The size of data block
  * @return  int64_t     Size of data sent, -1 on error
  */
-int64_t     udt_recvfile(socket_t, void *, int64_t *, int64_t, int);
+int64_t     udt_recvfile(socket_t, int, int64_t *, int64_t, int);
 
 /**
  * Send a file to the socket
  *
  * @param   socket_t    The socket to send to
- * @param   void*       The file buffer to send
+ * @param   int         The file descriptor to a readable open file
  * @param   int64_t     The offset position to read data
  * @param   int64_t     The total size to be sent
  * @param   int         The size of data block
  * @return  int64_t     Size of data sent, -1 on error
  */
-int64_t     udt_sendfile(socket_t, void *, int64_t, int64_t, int);
+int64_t     udt_sendfile(socket_t, int, int64_t, int64_t, int);
 
 #endif /* end of include guard: UDT_H_JDNRQTZQ */

src/api.c

@@ -105,3 +105,17 @@ int udt_close(socket_t sock)
     while (connection.is_open);
     return close(sock);
 }
+
+int64_t udt_recvfile(socket_t sock, int file, int64_t *offset, int64_t filesize,
+                 int blocksize)
+{
+    if (!connection.is_connected) return -1;
+    return send_file_buffer_read(file, offset, filesize, blocksize);
+}
+
+int64_t udt_sendfile(socket_t sock, int file, int64_t offset, int64_t filesize,
+                 int blocksize)
+{
+    if (!connection.is_connected) return -1;
+    return send_file_buffer_write(file, offset, filesize, blocksize);
+}

src/send_buffer.c

@@ -1,4 +1,5 @@
-#include <stdio.h>
+#include <unistd.h>
+
 #include "buffer.h"
 #include "packet.h"
 
@@ -66,3 +67,16 @@ int send_buffer_write(char *data, int len)
 
     return retval;
 }
+
+int send_file_buffer_write(int fd, int offset, int size, int blocksize)
+{
+    int pos = offset;
+    packet_t packet;
+    int retval;
+
+    while (1) {
+        /* TODO: read file and create packets. */
+    }
+
+    return retval; /* TODO: calculate bytes sent and return */
+}