mirror of
https://github.com/Next-Flip/Momentum-Firmware.git
synced 2026-04-25 03:29:58 -07:00
4a58930247
- Keep ccid_callback and buffer as private to the iso7816_handler - set usb ccid callback from iso7816_handler (to ensure the right structure is being passed) - make iso7816 related code independent from furi related code (goal is to make it independently testable) - rename vars Co-authored-by: あく <alleteam@gmail.com>
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
// transforms low level calls such as XFRCallback or ICC Power on to a structured one
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// an application can register these calls and listen for the callbacks defined in Iso7816Callbacks
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#include <stdint.h>
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#include <stddef.h>
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#include <furi.h>
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#include <furi_hal.h>
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#include "iso7816_handler.h"
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#include "iso7816_t0_apdu.h"
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#include "iso7816_atr.h"
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#include "iso7816_response.h"
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static Iso7816Handler* iso7816_handler;
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static CcidCallbacks* ccid_callbacks;
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static uint8_t* command_apdu_buffer;
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static uint8_t* response_apdu_buffer;
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void iso7816_icc_power_on_callback(uint8_t* atr_data, uint32_t* atr_data_len, void* context) {
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furi_check(context);
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Iso7816Handler* handler = (Iso7816Handler*)context;
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Iso7816Atr iso7816_atr;
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handler->iso7816_answer_to_reset(&iso7816_atr);
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furi_assert(iso7816_atr.T0 == 0x00);
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uint8_t atr_buffer[2] = {iso7816_atr.TS, iso7816_atr.T0};
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*atr_data_len = 2;
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memcpy(atr_data, atr_buffer, sizeof(uint8_t) * (*atr_data_len));
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}
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//dataBlock points to the buffer
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//dataBlockLen tells reader how nany bytes should be read
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void iso7816_xfr_datablock_callback(
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const uint8_t* pc_to_reader_datablock,
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uint32_t pc_to_reader_datablock_len,
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uint8_t* reader_to_pc_datablock,
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uint32_t* reader_to_pc_datablock_len,
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void* context) {
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furi_check(context);
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Iso7816Handler* handler = (Iso7816Handler*)context;
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ISO7816_Response_APDU* response_apdu = (ISO7816_Response_APDU*)response_apdu_buffer;
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ISO7816_Command_APDU* command_apdu = (ISO7816_Command_APDU*)command_apdu_buffer;
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uint8_t result = iso7816_read_command_apdu(
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command_apdu, pc_to_reader_datablock, pc_to_reader_datablock_len, CCID_SHORT_APDU_SIZE);
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if(result == ISO7816_READ_COMMAND_APDU_OK) {
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handler->iso7816_process_command(command_apdu, response_apdu);
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furi_assert(response_apdu->DataLen < CCID_SHORT_APDU_SIZE);
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} else if(result == ISO7816_READ_COMMAND_APDU_ERROR_WRONG_LE) {
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iso7816_set_response(response_apdu, ISO7816_RESPONSE_WRONG_LE);
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} else if(result == ISO7816_READ_COMMAND_APDU_ERROR_WRONG_LENGTH) {
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iso7816_set_response(response_apdu, ISO7816_RESPONSE_WRONG_LENGTH);
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}
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iso7816_write_response_apdu(response_apdu, reader_to_pc_datablock, reader_to_pc_datablock_len);
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}
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Iso7816Handler* iso7816_handler_alloc() {
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iso7816_handler = malloc(sizeof(Iso7816Handler));
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command_apdu_buffer = malloc(sizeof(ISO7816_Command_APDU) + CCID_SHORT_APDU_SIZE);
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response_apdu_buffer = malloc(sizeof(ISO7816_Response_APDU) + CCID_SHORT_APDU_SIZE);
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ccid_callbacks = malloc(sizeof(CcidCallbacks));
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ccid_callbacks->icc_power_on_callback = iso7816_icc_power_on_callback;
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ccid_callbacks->xfr_datablock_callback = iso7816_xfr_datablock_callback;
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return iso7816_handler;
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}
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void iso7816_handler_set_usb_ccid_callbacks() {
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furi_hal_usb_ccid_set_callbacks(ccid_callbacks, iso7816_handler);
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}
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void iso7816_handler_reset_usb_ccid_callbacks() {
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furi_hal_usb_ccid_set_callbacks(NULL, NULL);
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}
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void iso7816_handler_free(Iso7816Handler* handler) {
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free(ccid_callbacks);
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free(command_apdu_buffer);
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free(response_apdu_buffer);
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free(handler);
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}
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