#include "mod_gpg/openpgp/t1/t1_state.h"
#include <string.h>

Functions
static size_t	encode_rblock (t1_state_t *state, uint8_t nr, t1_r_error_t err)
static size_t	encode_sblock_response (t1_state_t state, t1_s_subtype_t subtype, const uint8_t inf, uint8_t inf_len)
void	t1_state_init (t1_state_t *state, bool use_crc)
	Initialise the state machine. Sets sequence numbers to 0, IFSC/IFSD to defaults.
static t1_feed_t	handle_iblock (t1_state_t state, const t1_block_t blk)
static t1_feed_t	handle_rblock (t1_state_t state, const t1_block_t blk)
static t1_feed_t	handle_sblock (t1_state_t state, const t1_block_t blk)
t1_feed_t	t1_state_feed (t1_state_t state, const t1_block_t blk)
	Feed an incoming decoded block to the state machine.
bool	t1_state_queue_response (t1_state_t state, const uint8_t resp, size_t resp_len)
	Register the application's APDU response so the state machine can chunk it into I-blocks.
size_t	t1_state_next_outbound (t1_state_t state, uint8_t out, size_t out_cap)
	Emit the next outbound block (control reply or response chunk).

Function Documentation

◆ encode_rblock()

size_t encode_rblock	(	t1_state_t *	state,
		uint8_t	nr,
		t1_r_error_t	err )

static

Definition at line 19 of file t1_state.cpp.

References t1_state_t::control_block, t1_state_t::control_len, t1_block_encode_r(), and t1_state_t::use_crc.

Referenced by handle_iblock(), handle_rblock(), and handle_sblock().

◆ encode_sblock_response()

size_t encode_sblock_response	(	t1_state_t *	state,
		t1_s_subtype_t	subtype,
		const uint8_t *	inf,
		uint8_t	inf_len )

static

Definition at line 27 of file t1_state.cpp.

References t1_state_t::control_block, t1_state_t::control_len, t1_block_encode_s(), and t1_state_t::use_crc.

Referenced by handle_iblock(), and handle_sblock().

◆ handle_iblock()

t1_feed_t handle_iblock	(	t1_state_t *	state,
		const t1_block_t *	blk )

static

Definition at line 46 of file t1_state.cpp.

References t1_state_t::apdu_buf, t1_state_t::apdu_in_progress, t1_state_t::apdu_len, t1_block_t::edc_ok, encode_rblock(), encode_sblock_response(), t1_block_t::i_more, t1_block_t::i_ns, t1_block_t::inf, t1_block_t::inf_len, t1_state_t::ns_expected, T1_FEED_APDU_READY, T1_FEED_NEED_OUT, T1_FEED_WAIT_MORE, T1_R_EDC_ERR, T1_R_OK, T1_R_OTHER_ERR, and T1_S_ABORT_RESP.

Referenced by t1_state_feed().

◆ handle_rblock()

t1_feed_t handle_rblock	(	t1_state_t *	state,
		const t1_block_t *	blk )

static

Definition at line 84 of file t1_state.cpp.

References t1_block_t::edc_ok, encode_rblock(), t1_state_t::ns_expected, t1_state_t::ns_send, t1_block_t::r_nr, t1_state_t::resp_pending, T1_FEED_IGNORED, T1_FEED_NEED_OUT, and T1_R_EDC_ERR.

Referenced by t1_state_feed().

◆ handle_sblock()

t1_feed_t handle_sblock	(	t1_state_t *	state,
		const t1_block_t *	blk )

static

◆ t1_state_feed()

t1_feed_t t1_state_feed	(	t1_state_t *	state,
		const t1_block_t *	block )

Feed an incoming decoded block to the state machine.

On EDC errors or unexpected sequence numbers the function queues an R-block (control_block). Mainline I-blocks either complete an APDU (T1_FEED_APDU_READY) or ACK chained pieces (T1_FEED_WAIT_MORE). S-blocks are handled and their responses queued.

Definition at line 142 of file t1_state.cpp.

References handle_iblock(), handle_rblock(), handle_sblock(), t1_block_t::kind, T1_BLOCK_I, T1_BLOCK_R, T1_BLOCK_S, and T1_FEED_IGNORED.

◆ t1_state_init()

void t1_state_init	(	t1_state_t *	state,
		bool	use_crc )

Initialise the state machine. Sets sequence numbers to 0, IFSC/IFSD to defaults.

Parameters

state	State storage (caller-owned, will be zeroed).
use_crc	EDC choice; must match what's negotiated with the reader via ATR.

Definition at line 36 of file t1_state.cpp.

References t1_state_t::ifsc, t1_state_t::ifsd, t1_state_t::ns_expected, t1_state_t::ns_send, T1_DEFAULT_IFSC, and t1_state_t::use_crc.

◆ t1_state_next_outbound()

size_t t1_state_next_outbound	(	t1_state_t *	state,
		uint8_t *	out,
		size_t	out_cap )

Emit the next outbound block (control reply or response chunk).

Parameters

state	State machine.
out	Output buffer.
out_cap	Output buffer capacity.

Returns: Number of bytes written. Zero means nothing to send.

Definition at line 167 of file t1_state.cpp.

References t1_state_t::control_block, t1_state_t::control_len, t1_state_t::ifsd, t1_state_t::ns_send, t1_state_t::resp_buf, t1_state_t::resp_len, t1_state_t::resp_pending, t1_state_t::resp_sent, t1_block_encode_i(), T1_DEFAULT_IFSC, T1_OK, and t1_state_t::use_crc.

◆ t1_state_queue_response()

bool t1_state_queue_response	(	t1_state_t *	state,
		const uint8_t *	resp,
		size_t	resp_len )

Register the application's APDU response so the state machine can chunk it into I-blocks.

Must only be called after t1_state_feed returned T1_FEED_APDU_READY.

Returns: false if resp_len > T1_MAX_RESPONSE_LEN.

Definition at line 155 of file t1_state.cpp.

References t1_state_t::resp_buf, t1_state_t::resp_len, t1_state_t::resp_pending, and t1_state_t::resp_sent.

Functions

Function Documentation

◆ encode_rblock()

◆ encode_sblock_response()

◆ handle_iblock()

◆ handle_rblock()

◆ handle_sblock()

◆ t1_state_feed()

◆ t1_state_init()

◆ t1_state_next_outbound()

◆ t1_state_queue_response()