Implement recv_file_buffer

Author: coditva

src/buffer.c

@@ -49,9 +49,7 @@ int buffer_read(buffer_t *buffer, char *data, int len)
 
         last = block -> last;
         if (pos >= len) {
-            free(block -> data);
-            free(block);
-            continue;
+            break;
         }
 
         int n = ((len - pos) < block -> len) ? len - pos : block -> len;

src/recv_buffer.c

@@ -1,4 +1,6 @@
-#include <pthread.h>
+#include <unistd.h>
+
+#include "packet.h"
 #include "buffer.h"
 
 static buffer_t buffer;
@@ -20,6 +22,20 @@ int recv_buffer_read(char *data, int len)
 
 int64_t recv_file_buffer_read(int fd, int64_t *offset, int64_t size, int64_t blocksize)
 {
-    /* TODO: implement this */
-    return 0;
+    char data[PACKET_DATA_SIZE];
+    int retval = 0;
+    int len = 0;
+
+    if (fd < 0) return -1;
+
+    while (size > 0) {
+        buffer_read(&buffer, data, PACKET_DATA_SIZE);
+        len = pwrite(fd, &data, PACKET_DATA_SIZE, *offset);
+        if (len < 0) return -1;
+
+        retval += len;
+        size -= len;
+    }
+
+    return retval;
 }