Fix race condition bug with large piped input.

	modified:   src/mods/config.h
	modified:   src/mods/input.c

Author: bartobri

src/mods/config.h

@@ -10,6 +10,6 @@
 
  #define BTK_VERSION_MAJOR      2
  #define BTK_VERSION_MINOR      0
- #define BTK_VERSION_REVISION   1
+ #define BTK_VERSION_REVISION   2
 
  #endif

src/mods/input.c

@@ -229,25 +229,45 @@ int input_get_str(char** dest, char *prompt)
 
 int input_get_from_pipe(unsigned char** dest)
 {
-	int r;
+	int r, size = 0, prev_size = 0;
+	unsigned char *tmp;
 
 	if (isatty(STDIN_FILENO))
 	{
 		error_log("Input data from a piped or redirected source is required.");
 		return -1;
 	}
 
-	r = input_get(dest, NULL, INPUT_GET_MODE_ALL);
-	if (r < 0)
-	{
-		error_log("Could not get input.");
-		return -1;
-	}
-	if (r == 0)
+	while (input_available())
 	{
-		error_log("No input provided.");
-		return -1;
+		r = input_get(&tmp, NULL, INPUT_GET_MODE_ALL);
+		if (r < 0)
+		{
+			error_log("Could not get input.");
+			return -1;
+		}
+		if (r == 0)
+		{
+			error_log("No input provided.");
+			return -1;
+		}
+
+		size += r;
+
+		(*dest) = realloc((*dest), size);
+		if ((*dest) == NULL)
+		{
+			error_log("Memory allocation error.");
+			return -1;
+		}
+
+		memcpy((*dest) + prev_size, tmp, r);
+
+		prev_size = size;
+
+		free(tmp);
+		tmp = NULL;
 	}
 
-	return r;
+	return size;
 }