eap_type_t reg_type;
u_int32_t reg_vendor;
bio_writer_t *writer;
- chunk_t length, data;
+ chunk_t data;
bool added_any = FALSE, found_vendor = FALSE;
eap_payload_t *payload;
writer = bio_writer_create(12);
writer->write_uint8(writer, EAP_RESPONSE);
writer->write_uint8(writer, identifier);
- length = writer->skip(writer, 2);
+ /* write zero length, we update it once we know the length */
+ writer->write_uint16(writer, 0);
write_type(writer, EAP_NAK, 0, expanded);
/* set length */
data = writer->get_buf(writer);
- htoun16(length.ptr, data.len);
+ htoun16(data.ptr + offsetof(eap_packet_t, length), data.len);
payload = eap_payload_create_data(data);
writer->destroy(writer);
return payload;
}
-
void (*wrap32)(bio_writer_t *this);
/**
- * Skips len bytes in the buffer before the next data is written, returns
- * a chunk covering the skipped bytes.
+ * Skips len bytes in the buffer, return chunk of skipped data.
+ *
+ * The returned chunk is not valid after calling any other writer function
+ * (except get_buf()), because a buffer reallocation might move the
+ * internal buffer to a different memory location!
*
* @param len number of bytes to skip
* @return chunk pointing to skipped bytes in the internal buffer