Modify the *time*() functions to avoid passing structures in arguments
(using const pointers instead) or returning structures (using result
arguments instead).
In the listener & aggregator, the signal strength is stored as an
unsigned byte. To display the actual (negative) value, one must
substract 256 (0x100) to the unsigned value.
This commit changes several things:
- Use the decimal (256) instead of the hexadecimal value (0x100).
- Don't substract 256 when copying the value to another unsigned byte
(aggregator).
- Be careful with the type length. In the positioning server, a SS
could be copied to a signed byte, while (theoretically) the negative
value can exceed the capacity of the signed byte. measurement.hh now
defines a type ss_t to store a signal strength value with the good
size (it is currently an int_fast16_t).
Refactor some code of Input{CSV,UDPSocket}::get_next_request() into
InputMedium::get_next_request().
The medium-specific code must now be implemented in
fill_current_request().
The option positioning.accept-new-mobiles allows the program to add
on-line mobiles that are not declared in the mobiles' configuration
file. This was the default till now; now this option is unactivated by
default to avoid unexpected Wi-Fi devices retransmitting positioning
requests.
In InputUDPSocket, update the AP's coordinates when receiving a
calibration or autocalibration request that contains the coordinates.
This is done if the option positioning.update-ap-coordinates-online is
activated.
owl_mac_bytes_to_string() now uses a static buffer, so the caller do not
need to free the returned buffer manually. Because of this static
buffer, it is not thread-safe anymore, therefore we introduce
owl_mac_bytes_to_string_r() that is a thread-safe version.
Matteo Cypriani