mirror of
https://github.com/cccb/servicepoint.git
synced 2025-01-18 18:10:14 +01:00
add NULL checks - rest
This commit is contained in:
Vinzenz Schroeter
parent
2e1cb6f681
commit
f2ff07d9d9
|
|
@ -1,4 +1,4 @@
|
|||
//! C functions for interacting with `SPConnection`s
|
||||
//! C functions for interacting with [SPConnection]s
|
||||
//!
|
||||
//! prefix `sp_connection_`
|
||||
|
||||
|
|
@ -24,7 +24,7 @@ pub struct SPConnection(pub(crate) servicepoint::Connection);
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// Bad string encoding
|
||||
/// - when `host` is null or an invalid host
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -36,6 +36,7 @@ pub struct SPConnection(pub(crate) servicepoint::Connection);
|
|||
pub unsafe extern "C" fn sp_connection_open(
|
||||
host: *const c_char,
|
||||
) -> *mut SPConnection {
|
||||
assert!(!host.is_null());
|
||||
let host = CStr::from_ptr(host).to_str().expect("Bad encoding");
|
||||
let connection = match servicepoint::Connection::open(host) {
|
||||
Err(_) => return null_mut(),
|
||||
|
|
@ -51,6 +52,11 @@ pub unsafe extern "C" fn sp_connection_open(
|
|||
///
|
||||
/// returns: true in case of success
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `connection` is NULL
|
||||
/// - when `packet` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -63,16 +69,23 @@ pub unsafe extern "C" fn sp_connection_send_packet(
|
|||
connection: *const SPConnection,
|
||||
packet: *mut SPPacket,
|
||||
) -> bool {
|
||||
assert!(!connection.is_null());
|
||||
assert!(!packet.is_null());
|
||||
let packet = Box::from_raw(packet);
|
||||
(*connection).0.send((*packet).0).is_ok()
|
||||
}
|
||||
|
||||
/// Sends a [SPCommand] to the display using the `SPConnection`.
|
||||
/// Sends a [SPCommand] to the display using the [SPConnection].
|
||||
///
|
||||
/// The passed `command` gets consumed.
|
||||
///
|
||||
/// returns: true in case of success
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `connection` is NULL
|
||||
/// - when `command` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -85,6 +98,8 @@ pub unsafe extern "C" fn sp_connection_send_command(
|
|||
connection: *const SPConnection,
|
||||
command: *mut SPCommand,
|
||||
) -> bool {
|
||||
assert!(!connection.is_null());
|
||||
assert!(!command.is_null());
|
||||
let command = (*Box::from_raw(command)).0;
|
||||
(*connection).0.send(command).is_ok()
|
||||
}
|
||||
|
|
@ -93,8 +108,6 @@ pub unsafe extern "C" fn sp_connection_send_command(
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `connection` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
|
|
@ -105,5 +118,6 @@ pub unsafe extern "C" fn sp_connection_send_command(
|
|||
/// - `connection` is not used concurrently or after this call
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn sp_connection_free(connection: *mut SPConnection) {
|
||||
assert!(!connection.is_null());
|
||||
_ = Box::from_raw(connection);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -27,7 +27,7 @@ impl Clone for SPCp437Grid {
|
|||
|
||||
/// Creates a new [SPCp437Grid] with the specified dimensions.
|
||||
///
|
||||
/// returns: [SPCp437Grid] initialized to 0.
|
||||
/// returns: [SPCp437Grid] initialized to 0. Will never return NULL.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -40,9 +40,11 @@ pub unsafe extern "C" fn sp_cp437_grid_new(
|
|||
width: usize,
|
||||
height: usize,
|
||||
) -> *mut SPCp437Grid {
|
||||
Box::into_raw(Box::new(SPCp437Grid(servicepoint::Cp437Grid::new(
|
||||
let result = Box::into_raw(Box::new(SPCp437Grid(servicepoint::Cp437Grid::new(
|
||||
width, height,
|
||||
))))
|
||||
))));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Loads a [SPCp437Grid] with the specified dimensions from the provided data.
|
||||
|
|
@ -51,7 +53,8 @@ pub unsafe extern "C" fn sp_cp437_grid_new(
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// When the provided `data_length` is not sufficient for the `height` and `width`
|
||||
/// - when `data` is NULL
|
||||
/// - when the provided `data_length` does not match `height` and `width`
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -68,16 +71,23 @@ pub unsafe extern "C" fn sp_cp437_grid_load(
|
|||
data: *const u8,
|
||||
data_length: usize,
|
||||
) -> *mut SPCp437Grid {
|
||||
assert!(data.is_null());
|
||||
let data = std::slice::from_raw_parts(data, data_length);
|
||||
Box::into_raw(Box::new(SPCp437Grid(servicepoint::Cp437Grid::load(
|
||||
let result = Box::into_raw(Box::new(SPCp437Grid(servicepoint::Cp437Grid::load(
|
||||
width, height, data,
|
||||
))))
|
||||
))));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Clones a [SPCp437Grid].
|
||||
///
|
||||
/// Will never return NULL.
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `cp437_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -90,11 +100,18 @@ pub unsafe extern "C" fn sp_cp437_grid_load(
|
|||
pub unsafe extern "C" fn sp_cp437_grid_clone(
|
||||
cp437_grid: *const SPCp437Grid,
|
||||
) -> *mut SPCp437Grid {
|
||||
Box::into_raw(Box::new((*cp437_grid).clone()))
|
||||
assert!(!cp437_grid.is_null());
|
||||
let result = Box::into_raw(Box::new((*cp437_grid).clone()));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Deallocates a [SPCp437Grid].
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `cp437_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -104,6 +121,7 @@ pub unsafe extern "C" fn sp_cp437_grid_clone(
|
|||
/// - `cp437_grid` was not passed to another consuming function, e.g. to create a [SPCommand]
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn sp_cp437_grid_free(cp437_grid: *mut SPCp437Grid) {
|
||||
assert!(!cp437_grid.is_null());
|
||||
_ = Box::from_raw(cp437_grid);
|
||||
}
|
||||
|
||||
|
|
@ -116,7 +134,8 @@ pub unsafe extern "C" fn sp_cp437_grid_free(cp437_grid: *mut SPCp437Grid) {
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// When accessing `x` or `y` out of bounds.
|
||||
/// - when `cp437_grid` is NULL
|
||||
/// - when accessing `x` or `y` out of bounds
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -130,6 +149,7 @@ pub unsafe extern "C" fn sp_cp437_grid_get(
|
|||
x: usize,
|
||||
y: usize,
|
||||
) -> u8 {
|
||||
assert!(!cp437_grid.is_null());
|
||||
(*cp437_grid).0.get(x, y)
|
||||
}
|
||||
|
||||
|
|
@ -145,7 +165,8 @@ pub unsafe extern "C" fn sp_cp437_grid_get(
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// When accessing `x` or `y` out of bounds.
|
||||
/// - when `cp437_grid` is NULL
|
||||
/// - when accessing `x` or `y` out of bounds
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -160,6 +181,7 @@ pub unsafe extern "C" fn sp_cp437_grid_set(
|
|||
y: usize,
|
||||
value: u8,
|
||||
) {
|
||||
assert!(!cp437_grid.is_null());
|
||||
(*cp437_grid).0.set(x, y, value);
|
||||
}
|
||||
|
||||
|
|
@ -170,6 +192,10 @@ pub unsafe extern "C" fn sp_cp437_grid_set(
|
|||
/// - `cp437_grid`: instance to write to
|
||||
/// - `value`: the value to set all cells to
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `cp437_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -181,6 +207,7 @@ pub unsafe extern "C" fn sp_cp437_grid_fill(
|
|||
cp437_grid: *mut SPCp437Grid,
|
||||
value: u8,
|
||||
) {
|
||||
assert!(!cp437_grid.is_null());
|
||||
(*cp437_grid).0.fill(value);
|
||||
}
|
||||
|
||||
|
|
@ -190,6 +217,10 @@ pub unsafe extern "C" fn sp_cp437_grid_fill(
|
|||
///
|
||||
/// - `cp437_grid`: instance to read from
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `cp437_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -199,6 +230,7 @@ pub unsafe extern "C" fn sp_cp437_grid_fill(
|
|||
pub unsafe extern "C" fn sp_cp437_grid_width(
|
||||
cp437_grid: *const SPCp437Grid,
|
||||
) -> usize {
|
||||
assert!(!cp437_grid.is_null());
|
||||
(*cp437_grid).0.width()
|
||||
}
|
||||
|
||||
|
|
@ -208,6 +240,10 @@ pub unsafe extern "C" fn sp_cp437_grid_width(
|
|||
///
|
||||
/// - `cp437_grid`: instance to read from
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `cp437_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -217,6 +253,7 @@ pub unsafe extern "C" fn sp_cp437_grid_width(
|
|||
pub unsafe extern "C" fn sp_cp437_grid_height(
|
||||
cp437_grid: *const SPCp437Grid,
|
||||
) -> usize {
|
||||
assert!(!cp437_grid.is_null());
|
||||
(*cp437_grid).0.height()
|
||||
}
|
||||
|
||||
|
|
@ -224,6 +261,10 @@ pub unsafe extern "C" fn sp_cp437_grid_height(
|
|||
///
|
||||
/// Will never return NULL.
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `cp437_grid` is NULL
|
||||
///
|
||||
/// ## Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
|
|||
|
|
@ -14,6 +14,10 @@ pub struct SPPacket(pub(crate) servicepoint::packet::Packet);
|
|||
///
|
||||
/// Will never return NULL.
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `command` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -26,15 +30,22 @@ pub struct SPPacket(pub(crate) servicepoint::packet::Packet);
|
|||
pub unsafe extern "C" fn sp_packet_from_command(
|
||||
command: *mut SPCommand,
|
||||
) -> *mut SPPacket {
|
||||
assert!(!command.is_null());
|
||||
let command = *Box::from_raw(command);
|
||||
let packet = SPPacket(command.0.into());
|
||||
Box::into_raw(Box::new(packet))
|
||||
let result = Box::into_raw(Box::new(packet));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Tries to load a [SPPacket] from the passed array with the specified length.
|
||||
///
|
||||
/// returns: NULL in case of an error, pointer to the allocated packet otherwise
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `data` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -48,6 +59,7 @@ pub unsafe extern "C" fn sp_packet_try_load(
|
|||
data: *const u8,
|
||||
length: usize,
|
||||
) -> *mut SPPacket {
|
||||
assert!(!data.is_null());
|
||||
let data = std::slice::from_raw_parts(data, length);
|
||||
match servicepoint::packet::Packet::try_from(data) {
|
||||
Err(_) => null_mut(),
|
||||
|
|
@ -59,6 +71,10 @@ pub unsafe extern "C" fn sp_packet_try_load(
|
|||
///
|
||||
/// Will never return NULL.
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `packet` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -71,11 +87,18 @@ pub unsafe extern "C" fn sp_packet_try_load(
|
|||
pub unsafe extern "C" fn sp_packet_clone(
|
||||
packet: *const SPPacket,
|
||||
) -> *mut SPPacket {
|
||||
Box::into_raw(Box::new(SPPacket((*packet).0.clone())))
|
||||
assert!(!packet.is_null());
|
||||
let result = Box::into_raw(Box::new(SPPacket((*packet).0.clone())));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Deallocates a [SPPacket].
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `sp_packet_free` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -84,5 +107,6 @@ pub unsafe extern "C" fn sp_packet_clone(
|
|||
/// - `packet` is not used concurrently or after this call
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn sp_packet_free(packet: *mut SPPacket) {
|
||||
assert!(!packet.is_null());
|
||||
_ = Box::from_raw(packet)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -42,9 +42,11 @@ pub unsafe extern "C" fn sp_pixel_grid_new(
|
|||
width: usize,
|
||||
height: usize,
|
||||
) -> *mut SPPixelGrid {
|
||||
Box::into_raw(Box::new(SPPixelGrid(servicepoint::PixelGrid::new(
|
||||
let result = Box::into_raw(Box::new(SPPixelGrid(servicepoint::PixelGrid::new(
|
||||
width, height,
|
||||
))))
|
||||
))));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Loads a [SPPixelGrid] with the specified dimensions from the provided data.
|
||||
|
|
@ -58,6 +60,7 @@ pub unsafe extern "C" fn sp_pixel_grid_new(
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `data` is NULL
|
||||
/// - when the dimensions and data size do not match exactly.
|
||||
/// - when the width is not dividable by 8
|
||||
///
|
||||
|
|
@ -75,16 +78,23 @@ pub unsafe extern "C" fn sp_pixel_grid_load(
|
|||
data: *const u8,
|
||||
data_length: usize,
|
||||
) -> *mut SPPixelGrid {
|
||||
assert!(!data.is_null());
|
||||
let data = std::slice::from_raw_parts(data, data_length);
|
||||
Box::into_raw(Box::new(SPPixelGrid(servicepoint::PixelGrid::load(
|
||||
let result = Box::into_raw(Box::new(SPPixelGrid(servicepoint::PixelGrid::load(
|
||||
width, height, data,
|
||||
))))
|
||||
))));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Clones a [SPPixelGrid].
|
||||
///
|
||||
/// Will never return NULL.
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `pixel_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -97,11 +107,18 @@ pub unsafe extern "C" fn sp_pixel_grid_load(
|
|||
pub unsafe extern "C" fn sp_pixel_grid_clone(
|
||||
pixel_grid: *const SPPixelGrid,
|
||||
) -> *mut SPPixelGrid {
|
||||
Box::into_raw(Box::new(SPPixelGrid((*pixel_grid).0.clone())))
|
||||
assert!(!pixel_grid.is_null());
|
||||
let result = Box::into_raw(Box::new(SPPixelGrid((*pixel_grid).0.clone())));
|
||||
assert!(!result.is_null());
|
||||
result
|
||||
}
|
||||
|
||||
/// Deallocates a [SPPixelGrid].
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `pixel_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -111,6 +128,7 @@ pub unsafe extern "C" fn sp_pixel_grid_clone(
|
|||
/// - `pixel_grid` was not passed to another consuming function, e.g. to create a [SPCommand]
|
||||
#[no_mangle]
|
||||
pub unsafe extern "C" fn sp_pixel_grid_free(pixel_grid: *mut SPPixelGrid) {
|
||||
assert!(!pixel_grid.is_null());
|
||||
_ = Box::from_raw(pixel_grid);
|
||||
}
|
||||
|
||||
|
|
@ -123,7 +141,8 @@ pub unsafe extern "C" fn sp_pixel_grid_free(pixel_grid: *mut SPPixelGrid) {
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// When accessing `x` or `y` out of bounds.
|
||||
/// - when `pixel_grid` is NULL
|
||||
/// - when accessing `x` or `y` out of bounds
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -137,6 +156,7 @@ pub unsafe extern "C" fn sp_pixel_grid_get(
|
|||
x: usize,
|
||||
y: usize,
|
||||
) -> bool {
|
||||
assert!(!pixel_grid.is_null());
|
||||
(*pixel_grid).0.get(x, y)
|
||||
}
|
||||
|
||||
|
|
@ -152,7 +172,8 @@ pub unsafe extern "C" fn sp_pixel_grid_get(
|
|||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// When accessing `x` or `y` out of bounds.
|
||||
/// - when `pixel_grid` is NULL
|
||||
/// - when accessing `x` or `y` out of bounds
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
|
|
@ -167,6 +188,7 @@ pub unsafe extern "C" fn sp_pixel_grid_set(
|
|||
y: usize,
|
||||
value: bool,
|
||||
) {
|
||||
assert!(!pixel_grid.is_null());
|
||||
(*pixel_grid).0.set(x, y, value);
|
||||
}
|
||||
|
||||
|
|
@ -177,6 +199,10 @@ pub unsafe extern "C" fn sp_pixel_grid_set(
|
|||
/// - `pixel_grid`: instance to write to
|
||||
/// - `value`: the value to set all pixels to
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `pixel_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -188,6 +214,7 @@ pub unsafe extern "C" fn sp_pixel_grid_fill(
|
|||
pixel_grid: *mut SPPixelGrid,
|
||||
value: bool,
|
||||
) {
|
||||
assert!(!pixel_grid.is_null());
|
||||
(*pixel_grid).0.fill(value);
|
||||
}
|
||||
|
||||
|
|
@ -197,6 +224,10 @@ pub unsafe extern "C" fn sp_pixel_grid_fill(
|
|||
///
|
||||
/// - `pixel_grid`: instance to read from
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `pixel_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -206,6 +237,7 @@ pub unsafe extern "C" fn sp_pixel_grid_fill(
|
|||
pub unsafe extern "C" fn sp_pixel_grid_width(
|
||||
pixel_grid: *const SPPixelGrid,
|
||||
) -> usize {
|
||||
assert!(!pixel_grid.is_null());
|
||||
(*pixel_grid).0.width()
|
||||
}
|
||||
|
||||
|
|
@ -215,6 +247,10 @@ pub unsafe extern "C" fn sp_pixel_grid_width(
|
|||
///
|
||||
/// - `pixel_grid`: instance to read from
|
||||
///
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `pixel_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
|
|
@ -224,12 +260,17 @@ pub unsafe extern "C" fn sp_pixel_grid_width(
|
|||
pub unsafe extern "C" fn sp_pixel_grid_height(
|
||||
pixel_grid: *const SPPixelGrid,
|
||||
) -> usize {
|
||||
assert!(!pixel_grid.is_null());
|
||||
(*pixel_grid).0.height()
|
||||
}
|
||||
|
||||
/// Gets an unsafe reference to the data of the [SPPixelGrid] instance.
|
||||
///
|
||||
/// ## Safety
|
||||
/// # Panics
|
||||
///
|
||||
/// - when `pixel_grid` is NULL
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The caller has to make sure that:
|
||||
///
|
||||
|
|
@ -240,6 +281,7 @@ pub unsafe extern "C" fn sp_pixel_grid_height(
|
|||
pub unsafe extern "C" fn sp_pixel_grid_unsafe_data_ref(
|
||||
pixel_grid: *mut SPPixelGrid,
|
||||
) -> SPByteSlice {
|
||||
assert!(!pixel_grid.is_null());
|
||||
let data = (*pixel_grid).0.data_ref_mut();
|
||||
SPByteSlice {
|
||||
start: data.as_mut_ptr_range().start,
|
||||
|
|
|
|||
Loading…
Reference in a new issue