Add a bio_reader_t constructor variant freeing passed data during destruction

src/libstrongswan/bio/bio_reader.c

@@ -36,6 +36,11 @@ struct private_bio_reader_t {
 	 * Remaining data to process
 	 */
 	chunk_t buf;
+
+	/**
+	 * Optional data to free during destruction
+	 */
+	chunk_t cleanup;
 };
 
 METHOD(bio_reader_t, remaining, u_int32_t,
@@ -302,6 +307,7 @@ METHOD(bio_reader_t, read_data32, bool,
 METHOD(bio_reader_t, destroy, void,
 	private_bio_reader_t *this)
 {
+	free(this->cleanup.ptr);
 	free(this);
 }
 
@@ -339,3 +345,17 @@ bio_reader_t *bio_reader_create(chunk_t data)
 
 	return &this->public;
 }
+
+/**
+ * See header
+ */
+bio_reader_t *bio_reader_create_own(chunk_t data)
+{
+	private_bio_reader_t *this;
+
+	this = (private_bio_reader_t*)bio_reader_create(data);
+
+	this->cleanup = data;
+
+	return &this->public;
+}

src/libstrongswan/bio/bio_reader.h

@@ -187,7 +187,18 @@ struct bio_reader_t {
 
 /**
  * Create a bio_reader instance.
+ *
+ * @param data			data buffer, must survive lifetime of reader
+ * @return				reader
  */
 bio_reader_t *bio_reader_create(chunk_t data);
 
-#endif /** bio_reader_H_ @}*/
+/**
+ * Create a bio_reader instance owning buffer.
+ *
+ * @param data			data buffer, gets freed with destroy()
+ * @return				reader
+ */
+bio_reader_t *bio_reader_create_own(chunk_t data);
+
+#endif /** BIO_READER_H_ @}*/