Struct SessionLayer 

pub struct SessionLayer { /* private fields */ }

The session table + session_nb allocator.

Implementations

impl SessionLayer

pub fn new() -> Self

New, empty session layer.

pub fn resource_of(&self, session_nb: u16) -> Option<ResourceId>

Resource bound to session_nb, if open.

pub fn session_for(&self, resource: ResourceId) -> Option<u16>

The lowest open session_nb bound to resource, if any.

Walks only the open sessions (a handful per slot), where the caller used to probe every one of the 65 535 representable numbers through resource_of (audit r10-O-9).

pub fn sessions(&self) -> Vec<(u16, ResourceId)>

All open (session_nb, resource) pairs, ascending by session_nb.

pub fn len(&self) -> usize

Number of open sessions.

pub fn is_empty(&self) -> bool

Whether there are no open sessions.

pub fn create_session(&mut self, resource: ResourceId) -> Result<Vec<u8>>

Open a session to a module-provided resource (host-initiated): returns the open_session_request SPDU to send. Sessions are opened the same way in both directions (§8.4.1) — the host sends open_session_request, and the module (the resource provider) assigns the session_nb in its open_session_response. (create_session/0x93 is a resource-manager-internal primitive; a real CAM rejects it with status=0xF0 — verified live against an AlphaCrypt.) The session is recorded once the module’s open_session_response(ok) arrives.

pub fn send_apdu(&self, session_nb: u16, apdu: &[u8]) -> Result<Vec<u8>>

Wrap an APDU for sending on session_nb (session_number + body).

pub fn close(&mut self, session_nb: u16) -> Result<Vec<u8>>

Begin closing session_nb: returns the close_session_request SPDU.

pub fn on_spdu( &mut self, spdu: &[u8], provides: impl Fn(ResourceId) -> bool, ) -> Result<SessionOut>

Handle one inbound SPDU. provides answers “does the host provide this resource?” for an incoming open_session_request.

Trait Implementations

impl Debug for SessionLayer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SessionLayer

fn default() -> Self

Returns the “default value” for a type.