| /* ISO 7816-3 Finite State Machine (reader side) |
| * |
| * (C) 2019 by Harald Welte <laforge@gnumonks.org> |
| * |
| * inspired by earlier work |
| * (C) 2016-2017 by Harald Welte <hwelte@hmw-consulting.de> |
| * (C) 2018 by sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
| */ |
| |
| #include <string.h> |
| |
| #include <osmocom/core/utils.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/fsm.h> |
| #include <osmocom/core/logging.h> |
| #include <osmocom/sim/sim.h> |
| |
| #include "logging.h" |
| #include "cuart.h" |
| #include "iso7816_fsm.h" |
| |
| /* Section 8.2: the Answer-to-Reset (... a string of at most 32 bytes) */ |
| #define MAX_ATR_SIZE 32 |
| |
| #define S(x) (1 << (x)) |
| |
| /*! ISO 7816-3 states */ |
| enum iso7816_3_state { |
| ISO7816_S_RESET, /*!< in Reset */ |
| ISO7816_S_WAIT_ATR, /*!< waiting for ATR to start */ |
| ISO7816_S_IN_ATR, /*!< while we are receiving the ATR */ |
| ISO7816_S_WAIT_TPDU, /*!< waiting for start of new TPDU */ |
| ISO7816_S_IN_TPDU, /*!< inside a single TPDU */ |
| ISO7816_S_WAIT_PPS_RSP, /*!< waiting for start of the PPS response */ |
| ISO7816_S_IN_PPS_RSP, /*!< while we are inside the PPS request */ |
| }; |
| |
| /*! Answer-To-Reset (ATR) sub-states of ISO7816_S_IN_ATR |
| * @note defined in ISO/IEC 7816-3:2006(E) section 8 |
| */ |
| enum atr_state { |
| ATR_S_WAIT_TS, /*!< initial byte */ |
| ATR_S_WAIT_T0, /*!< format byte */ |
| ATR_S_WAIT_TA, /*!< first sub-group interface byte */ |
| ATR_S_WAIT_TB, /*!< second sub-group interface byte */ |
| ATR_S_WAIT_TC, /*!< third sub-group interface byte */ |
| ATR_S_WAIT_TD, /*!< fourth sub-group interface byte */ |
| ATR_S_WAIT_HIST, /*!< historical byte */ |
| ATR_S_WAIT_TCK, /*!< check byte */ |
| ATR_S_DONE |
| }; |
| |
| /*! Protocol and Parameters Selection (PPS) sub-states of ISO7816_S_IN_PTS_REQ/ISO7816_S_IN_PTS_RSP |
| * @note defined in ISO/IEC 7816-3:2006(E) section 9 |
| */ |
| enum pps_state { |
| PPS_S_PPS_REQ_INIT, /*!< tx pps request */ |
| PPS_S_TX_PPS_REQ, |
| PPS_S_WAIT_PPSX, /*!< initial byte */ |
| PPS_S_WAIT_PPS0, /*!< format byte */ |
| PPS_S_WAIT_PPS1, /*!< first parameter byte */ |
| PPS_S_WAIT_PPS2, /*!< second parameter byte */ |
| PPS_S_WAIT_PPS3, /*!< third parameter byte */ |
| PPS_S_WAIT_PCK, /*!< check byte */ |
| PPS_S_DONE |
| }; |
| |
| /*! Transport Protocol Data Unit (TPDU) sub-states of ISO7816_S_IN_TPDU |
| * @note defined in ISO/IEC 7816-3:2006(E) section 10 and 12 |
| * @remark APDUs are formed by one or more command+response TPDUs |
| */ |
| enum tpdu_state { |
| TPDU_S_INIT, /*!< initial state */ |
| TPDU_S_TX_HDR, /*!< transmitting hdr, waiting for completion */ |
| TPDU_S_PROCEDURE, /*!< procedure byte (could also be SW1) */ |
| TPDU_S_TX_REMAINING, /*!< Tx remaining data bytes */ |
| TPDU_S_TX_SINGLE, /*!< Tx single data byte */ |
| TPDU_S_RX_REMAINING, /*!< Rx remaining data bytes */ |
| TPDU_S_RX_SINGLE, /*!< Rx single data byte */ |
| TPDU_S_SW1, /*!< first status word */ |
| TPDU_S_SW2, /*!< second status word */ |
| TPDU_S_DONE, |
| }; |
| |
| /* FSM timer enumeration */ |
| enum iso7816_3_timer { |
| T_WAIT_ATR = 1, |
| T_GUARD, |
| }; |
| |
| /* forward declarations */ |
| static struct osmo_fsm iso7816_3_fsm; |
| static struct osmo_fsm atr_fsm; |
| static struct osmo_fsm tpdu_fsm; |
| static struct osmo_fsm pps_fsm; |
| |
| /* look-up table for bit-wise inversion to convert from "inverse convention" to normal */ |
| static const uint8_t convention_convert_lut[256] = { |
| 0xff, 0x7f, 0xbf, 0x3f, 0xdf, 0x5f, 0x9f, 0x1f, 0xef, 0x6f, 0xaf, 0x2f, 0xcf, 0x4f, 0x8f, 0x0f, |
| 0xf7, 0x77, 0xb7, 0x37, 0xd7, 0x57, 0x97, 0x17, 0xe7, 0x67, 0xa7, 0x27, 0xc7, 0x47, 0x87, 0x07, |
| 0xfb, 0x7b, 0xbb, 0x3b, 0xdb, 0x5b, 0x9b, 0x1b, 0xeb, 0x6b, 0xab, 0x2b, 0xcb, 0x4b, 0x8b, 0x0b, |
| 0xf3, 0x73, 0xb3, 0x33, 0xd3, 0x53, 0x93, 0x13, 0xe3, 0x63, 0xa3, 0x23, 0xc3, 0x43, 0x83, 0x03, |
| 0xfd, 0x7d, 0xbd, 0x3d, 0xdd, 0x5d, 0x9d, 0x1d, 0xed, 0x6d, 0xad, 0x2d, 0xcd, 0x4d, 0x8d, 0x0d, |
| 0xf5, 0x75, 0xb5, 0x35, 0xd5, 0x55, 0x95, 0x15, 0xe5, 0x65, 0xa5, 0x25, 0xc5, 0x45, 0x85, 0x05, |
| 0xf9, 0x79, 0xb9, 0x39, 0xd9, 0x59, 0x99, 0x19, 0xe9, 0x69, 0xa9, 0x29, 0xc9, 0x49, 0x89, 0x09, |
| 0xf1, 0x71, 0xb1, 0x31, 0xd1, 0x51, 0x91, 0x11, 0xe1, 0x61, 0xa1, 0x21, 0xc1, 0x41, 0x81, 0x01, |
| 0xfe, 0x7e, 0xbe, 0x3e, 0xde, 0x5e, 0x9e, 0x1e, 0xee, 0x6e, 0xae, 0x2e, 0xce, 0x4e, 0x8e, 0x0e, |
| 0xf6, 0x76, 0xb6, 0x36, 0xd6, 0x56, 0x96, 0x16, 0xe6, 0x66, 0xa6, 0x26, 0xc6, 0x46, 0x86, 0x06, |
| 0xfa, 0x7a, 0xba, 0x3a, 0xda, 0x5a, 0x9a, 0x1a, 0xea, 0x6a, 0xaa, 0x2a, 0xca, 0x4a, 0x8a, 0x0a, |
| 0xf2, 0x72, 0xb2, 0x32, 0xd2, 0x52, 0x92, 0x12, 0xe2, 0x62, 0xa2, 0x22, 0xc2, 0x42, 0x82, 0x02, |
| 0xfc, 0x7c, 0xbc, 0x3c, 0xdc, 0x5c, 0x9c, 0x1c, 0xec, 0x6c, 0xac, 0x2c, 0xcc, 0x4c, 0x8c, 0x0c, |
| 0xf4, 0x74, 0xb4, 0x34, 0xd4, 0x54, 0x94, 0x14, 0xe4, 0x64, 0xa4, 0x24, 0xc4, 0x44, 0x84, 0x04, |
| 0xf8, 0x78, 0xb8, 0x38, 0xd8, 0x58, 0x98, 0x18, 0xe8, 0x68, 0xa8, 0x28, 0xc8, 0x48, 0x88, 0x08, |
| 0xf0, 0x70, 0xb0, 0x30, 0xd0, 0x50, 0x90, 0x10, 0xe0, 0x60, 0xa0, 0x20, 0xc0, 0x40, 0x80, 0x00, |
| }; |
| |
| /*********************************************************************** |
| * ISO7816-3 Main FSM |
| ***********************************************************************/ |
| |
| static const struct value_string iso7816_3_event_names[] = { |
| { ISO7816_E_RX_SINGLE, "UART_RX_SINGLE" }, |
| { ISO7816_E_RX_COMPL, "UART_RX_COMPL" }, |
| { ISO7816_E_TX_COMPL, "UART_TX_COMPL" }, |
| { ISO7816_E_POWER_UP_IND, "POWER_UP_IND" }, |
| { ISO7816_E_RESET_REL_IND, "RESET_REL_IND" }, |
| { ISO7816_E_RX_ERR_IND, "RX_ERR_IND" }, |
| { ISO7816_E_TX_ERR_IND, "TX_ERR_IND" }, |
| { ISO7816_E_ATR_DONE_IND, "ATR_DONE_IND" }, |
| { ISO7816_E_ATR_ERR_IND, "ATR_ERR_IND" }, |
| { ISO7816_E_TPDU_DONE_IND, "TPDU_DONE_IND" }, |
| { ISO7816_E_XCEIVE_TPDU_CMD, "XCEIVE_TPDU_CMD" }, |
| /* allstate events */ |
| { ISO7816_E_WTIME_EXP, "WAIT_TIME_EXP" }, |
| { ISO7816_E_HW_ERR_IND, "HW_ERR_IND" }, |
| { ISO7816_E_SW_ERR_IND, "SW_ERR_IND" }, |
| { ISO7816_E_CARD_REMOVAL, "CARD_REMOVAL" }, |
| { ISO7816_E_POWER_DN_IND, "POWER_DN_IND" }, |
| { ISO7816_E_RESET_ACT_IND, "RESET_ACT_IND" }, |
| { ISO7816_E_ABORT_REQ, "ABORT_REQ" }, |
| { ISO7816_E_TPDU_CLEAR_REQ, "TPDU_CLEAR_REQ" }, |
| { 0, NULL } |
| }; |
| |
| struct iso7816_3_priv { |
| uint8_t slot_nr; |
| /* child FSM instances */ |
| struct osmo_fsm_inst *atr_fi; |
| struct osmo_fsm_inst *pps_fi; |
| struct osmo_fsm_inst *tpdu_fi; |
| /* other data */ |
| bool convention_convert;/*!< If convention conversion is needed */ |
| uint16_t guard_time_ms; |
| /* underlying UART */ |
| struct card_uart *uart; |
| iso7816_user_cb user_cb; |
| void *user_priv; |
| }; |
| |
| /* type-safe method to obtain iso7816_3_priv from fi */ |
| static struct iso7816_3_priv *get_iso7816_3_priv(struct osmo_fsm_inst *fi) |
| { |
| OSMO_ASSERT(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| return (struct iso7816_3_priv *) fi->priv; |
| } |
| |
| /* convert from clock cycles of the CLK line to milli-seconds */ |
| uint32_t fi_cycles2ms(struct osmo_fsm_inst *fi, uint32_t cyclces) |
| { |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| /* FIXME */ |
| return 1000; |
| } |
| |
| /* card UART notifies us: dispatch to (main ISO7816-3) FSM */ |
| static void tpdu_uart_notification(struct card_uart *cuart, enum card_uart_event evt, void *data) |
| { |
| struct osmo_fsm_inst *fi = (struct osmo_fsm_inst *) cuart->priv; |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| LOGPFSML(fi, LOGL_DEBUG, "UART Notification '%s'\n", |
| get_value_string(card_uart_event_vals, evt)); |
| |
| /* FIXME: Set only flags here; Main loop polls flags and dispatches events */ |
| |
| switch (evt) { |
| case CUART_E_RX_SINGLE: |
| osmo_fsm_inst_dispatch(fi, ISO7816_E_RX_SINGLE, data); |
| break; |
| case CUART_E_RX_COMPLETE: |
| osmo_fsm_inst_dispatch(fi, ISO7816_E_RX_COMPL, data); |
| break; |
| case CUART_E_RX_TIMEOUT: |
| osmo_fsm_inst_dispatch(fi, ISO7816_E_WTIME_EXP, data); |
| break; |
| case CUART_E_TX_COMPLETE: |
| osmo_fsm_inst_dispatch(fi, ISO7816_E_TX_COMPL, data); |
| break; |
| } |
| } |
| |
| static void iso7816_3_reset_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 0); |
| |
| /* go back to initial state in child FSMs */ |
| osmo_fsm_inst_state_chg(ip->atr_fi, ATR_S_WAIT_TS, 0, 0); |
| osmo_fsm_inst_state_chg(ip->pps_fi, PPS_S_PPS_REQ_INIT, 0, 0); |
| osmo_fsm_inst_state_chg(ip->tpdu_fi, TPDU_S_INIT, 0, 0); |
| } |
| |
| static void iso7816_3_reset_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| struct msgb *msg; |
| |
| switch (event) { |
| case ISO7816_E_RESET_REL_IND: |
| /* TOOD: this should happen before reset is released */ |
| card_uart_ctrl(ip->uart, CUART_CTL_RX, true); |
| |
| /* let's be reasonable here: the 40k cycle delay to ATR start is |
| * ~1.4ms @ 2.5Mhz/6720 baud, 1ETU = 372 cycles -> 40k/372=107/12ETU ~ 9 byte |
| * default timeout for rx is 9600 ETU, ATR might be missing the TCK |
| * so it might time out, so just add this delay */ |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 32+9); |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_WAIT_ATR, 0, 0); |
| break; |
| case ISO7816_E_POWER_UP_IND: |
| break; |
| case ISO7816_E_PPS_FAILED_IND: |
| msg = data; |
| /* notify user about PPS result */ |
| ip->user_cb(fi, event, 0, msg); |
| break; |
| case ISO7816_E_TPDU_FAILED_IND: |
| msg = data; |
| /* hand finished TPDU to user */ |
| ip->user_cb(fi, event, 0, msg); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void iso7816_3_wait_atr_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_IN_ATR, 0, 0); |
| osmo_fsm_inst_dispatch(ip->atr_fi, event, data); |
| break; |
| case ISO7816_E_WTIME_EXP: |
| ip->user_cb(fi, event, 0, NULL); |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void iso7816_3_in_atr_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| struct msgb *atr; |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| case ISO7816_E_RX_ERR_IND: |
| case ISO7816_E_WTIME_EXP: |
| /* simply pass this through to the child FSM for the ATR */ |
| osmo_fsm_inst_dispatch(ip->atr_fi, event, data); |
| break; |
| case ISO7816_E_ATR_DONE_IND: |
| atr = data; |
| /* FIXME: verify ATR result: success / failure */ |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_WAIT_TPDU, 0, 0); |
| /* notify user about ATR */ |
| ip->user_cb(fi, event, 0, atr); |
| break; |
| case ISO7816_E_ATR_ERR_IND: |
| atr = data; |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| ip->user_cb(fi, event, 0, atr); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void iso7816_3_wait_tpdu_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 0); |
| card_uart_ctrl(ip->uart, CUART_CTL_NO_RXTX, true); |
| /* reset the TPDU state machine */ |
| osmo_fsm_inst_dispatch(ip->tpdu_fi, ISO7816_E_TPDU_CLEAR_REQ, NULL); |
| } |
| |
| static void iso7816_3_wait_tpdu_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| switch (event) { |
| case ISO7816_E_XCEIVE_TPDU_CMD: |
| /* "data" contains a msgb-wrapped TPDU */ |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_IN_TPDU, 0, 0); |
| /* pass on to sub-fsm */ |
| osmo_fsm_inst_dispatch(ip->tpdu_fi, event, data); |
| break; |
| case ISO7816_E_XCEIVE_PPS_CMD: |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_WAIT_PPS_RSP, 0, 0); |
| osmo_fsm_inst_state_chg(ip->pps_fi, PPS_S_PPS_REQ_INIT, 0, 0); |
| osmo_fsm_inst_dispatch(ip->pps_fi, event, data); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void iso7816_3_in_tpdu_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| struct msgb *apdu; |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| case ISO7816_E_RX_COMPL: |
| case ISO7816_E_RX_ERR_IND: |
| case ISO7816_E_TX_COMPL: |
| case ISO7816_E_TX_ERR_IND: |
| /* simply pass this through to the child FSM for the ATR */ |
| osmo_fsm_inst_dispatch(ip->tpdu_fi, event, data); |
| break; |
| case ISO7816_E_TPDU_DONE_IND: |
| apdu = data; |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_WAIT_TPDU, 0, 0); |
| /* hand finished TPDU to user */ |
| ip->user_cb(fi, event, 0, apdu); |
| break; |
| case ISO7816_E_WTIME_EXP: |
| /* FIXME: power off? */ |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void iso7816_3_allstate_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| switch (event) { |
| case ISO7816_E_HW_ERR_IND: |
| case ISO7816_E_CARD_REMOVAL: |
| /* FIXME: power off? */ |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| break; |
| case ISO7816_E_POWER_DN_IND: |
| case ISO7816_E_RESET_ACT_IND: |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| break; |
| case ISO7816_E_ABORT_REQ: |
| /* FIXME */ |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| |
| static void iso7816_3_s_wait_pps_rsp_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| switch (event) { |
| case ISO7816_E_TX_COMPL: |
| /* Rx of single byte is already enabled by previous card_uart_tx() call */ |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_IN_PPS_RSP, 0, 0); |
| osmo_fsm_inst_dispatch(ip->pps_fi, event, data); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void iso7816_3_s_ins_pps_rsp_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| struct msgb *ppsrsp; |
| OSMO_ASSERT(fi->fsm == &iso7816_3_fsm); |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| case ISO7816_E_WTIME_EXP: |
| /* simply pass this through to the child FSM for the ATR */ |
| osmo_fsm_inst_dispatch(ip->pps_fi, event, data); |
| break; |
| case ISO7816_E_PPS_DONE_IND: |
| case ISO7816_E_PPS_FAILED_IND: |
| ppsrsp = data; |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_WAIT_TPDU, 0, 0); |
| /* notify user about PPS result */ |
| ip->user_cb(fi, event, 0, ppsrsp); |
| break; |
| case ISO7816_E_RX_ERR_IND: |
| ppsrsp = data; |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| ip->user_cb(fi, event, 0, ppsrsp); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static const struct osmo_fsm_state iso7816_3_states[] = { |
| [ISO7816_S_RESET] = { |
| .name = "RESET", |
| .in_event_mask = S(ISO7816_E_RESET_REL_IND) | |
| S(ISO7816_E_POWER_UP_IND) | |
| S(ISO7816_E_PPS_FAILED_IND)| |
| S(ISO7816_E_TPDU_FAILED_IND), |
| .out_state_mask = S(ISO7816_S_WAIT_ATR) | |
| S(ISO7816_S_RESET), |
| .action = iso7816_3_reset_action, |
| .onenter = iso7816_3_reset_onenter, |
| }, |
| [ISO7816_S_WAIT_ATR] = { |
| .name = "WAIT_ATR", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ISO7816_S_RESET) | |
| S(ISO7816_S_IN_ATR), |
| .action = iso7816_3_wait_atr_action, |
| }, |
| [ISO7816_S_IN_ATR] = { |
| .name = "IN_ATR", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_RX_ERR_IND) | |
| S(ISO7816_E_ATR_DONE_IND) | |
| S(ISO7816_E_ATR_ERR_IND) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ISO7816_S_RESET) | |
| S(ISO7816_S_IN_ATR) | |
| S(ISO7816_S_WAIT_TPDU), |
| .action = iso7816_3_in_atr_action, |
| }, |
| [ISO7816_S_WAIT_TPDU] = { |
| .name = "WAIT_TPDU", |
| .in_event_mask = S(ISO7816_E_XCEIVE_TPDU_CMD) | |
| S(ISO7816_E_XCEIVE_PPS_CMD), |
| .out_state_mask = S(ISO7816_S_RESET) | |
| S(ISO7816_S_WAIT_TPDU) | |
| S(ISO7816_S_IN_TPDU) | |
| S(ISO7816_S_WAIT_PPS_RSP), |
| .action = iso7816_3_wait_tpdu_action, |
| .onenter = iso7816_3_wait_tpdu_onenter, |
| }, |
| [ISO7816_S_IN_TPDU] = { |
| .name = "IN_TPDU", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_RX_COMPL) | |
| S(ISO7816_E_TX_COMPL) | |
| S(ISO7816_E_RX_ERR_IND) | |
| S(ISO7816_E_TX_ERR_IND) | |
| S(ISO7816_E_TPDU_DONE_IND) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ISO7816_S_RESET) | |
| S(ISO7816_S_WAIT_TPDU) | |
| S(ISO7816_S_IN_TPDU), |
| .action = iso7816_3_in_tpdu_action, |
| }, |
| [ISO7816_S_WAIT_PPS_RSP] = { |
| .name = "WAIT_PPS_RESP", |
| .in_event_mask = S(ISO7816_E_TX_COMPL) | |
| S(ISO7816_E_TX_ERR_IND) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ISO7816_S_RESET) | |
| S(ISO7816_S_WAIT_TPDU) | |
| S(ISO7816_S_WAIT_PPS_RSP) | |
| S(ISO7816_S_IN_PPS_RSP), |
| .action = iso7816_3_s_wait_pps_rsp_action, |
| }, |
| [ISO7816_S_IN_PPS_RSP] = { |
| .name = "IN_PPS_RESP", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_RX_COMPL) | |
| S(ISO7816_E_RX_ERR_IND) | |
| S(ISO7816_E_PPS_DONE_IND) | |
| S(ISO7816_E_PPS_FAILED_IND) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ISO7816_S_RESET) | |
| S(ISO7816_S_WAIT_TPDU) | |
| S(ISO7816_S_IN_PPS_RSP), |
| .action = iso7816_3_s_ins_pps_rsp_action, |
| }, |
| }; |
| static struct osmo_fsm iso7816_3_fsm = { |
| .name = "ISO7816-3", |
| .states = iso7816_3_states, |
| .num_states = ARRAY_SIZE(iso7816_3_states), |
| .log_subsys = DISO7816, |
| .event_names = iso7816_3_event_names, |
| .allstate_action = iso7816_3_allstate_action, |
| .allstate_event_mask = S(ISO7816_E_CARD_REMOVAL) | |
| S(ISO7816_E_POWER_DN_IND) | |
| S(ISO7816_E_RESET_ACT_IND) | |
| S(ISO7816_E_HW_ERR_IND) | |
| S(ISO7816_E_ABORT_REQ), |
| }; |
| |
| /*********************************************************************** |
| * ATR FSM |
| ***********************************************************************/ |
| |
| struct atr_fsm_priv { |
| uint8_t hist_len; /*!< store the number of expected historical bytes */ |
| uint8_t y; /*!< last mask of the upcoming TA, TB, TC, TD interface bytes */ |
| uint8_t i; /*!< interface byte subgroup number */ |
| struct msgb *atr; /*!< ATR data */ |
| uint8_t computed_checksum; |
| uint16_t protocol_support; |
| }; |
| |
| /* obtain the [software] guard time in milli-seconds from the atr fsm_inst */ |
| static uint32_t atr_fi_gt_ms(struct osmo_fsm_inst *fi) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip; |
| |
| OSMO_ASSERT(fi->fsm == &atr_fsm); |
| OSMO_ASSERT(parent_fi); |
| ip = get_iso7816_3_priv(parent_fi); |
| |
| return ip->guard_time_ms; |
| } |
| |
| /* obtain the 'byte' parmeter of an ISO7816_E_RX event */ |
| static uint8_t get_rx_byte_evt(struct osmo_fsm_inst *fi, void *data) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| uint8_t byte = *(uint8_t *)data; |
| |
| /* apply inverse convention */ |
| if (ip->convention_convert) |
| byte = convention_convert_lut[byte]; |
| |
| return byte; |
| } |
| |
| /* append a single byte to the ATR */ |
| static int atr_append_byte(struct osmo_fsm_inst *fi, uint8_t byte) |
| { |
| struct atr_fsm_priv *atp = fi->priv; |
| |
| if (!msgb_tailroom(atp->atr)) { |
| LOGPFSML(fi, LOGL_ERROR, "ATR overflow !?!"); |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_SW_ERR_IND, NULL); |
| return -1; |
| } |
| msgb_put_u8(atp->atr, byte); |
| return 0; |
| } |
| |
| static void atr_wait_ts_onenter(struct osmo_fsm_inst *fi, uint32_t old_state) |
| { |
| struct atr_fsm_priv *atp = fi->priv; |
| |
| /* reset state to its initial value */ |
| atp->hist_len = 0; |
| atp->y = 0; |
| atp->i = 0; |
| if (!atp->atr) |
| atp->atr = msgb_alloc_c(fi, 33, "ATR"); /* TS + 32 chars */ |
| else |
| msgb_reset(atp->atr); |
| atp->computed_checksum = 0; |
| atp->protocol_support = 0; |
| } |
| |
| static void atr_wait_ts_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct atr_fsm_priv *atp = fi->priv; |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| OSMO_ASSERT(msgb_length(atp->atr) == 0); |
| restart: |
| byte = get_rx_byte_evt(parent_fi, data); |
| LOGPFSML(fi, LOGL_DEBUG, "RX byte '%02x'\n", byte); |
| switch (byte) { |
| case 0x23: |
| /* direct convention used, but decoded using inverse |
| * convention (a parity error should also have occurred) */ |
| /* fall-through */ |
| case 0x30: |
| /* inverse convention used, but decoded using direct |
| * convention (a parity error should also have occurred) */ |
| ip->convention_convert = !ip->convention_convert; |
| goto restart; |
| break; |
| case 0x3b: /* direct convention used and correctly decoded */ |
| /* fall-through */ |
| case 0x3f: /* inverse convention used and correctly decoded */ |
| atr_append_byte(fi, byte); |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_T0, atr_fi_gt_ms(fi), T_GUARD); |
| break; |
| default: |
| LOGPFSML(fi, LOGL_ERROR, "Invalid TS received: 0x%02X\n", byte); |
| /* FIXME: somehow indiicate to user */ |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_SW_ERR_IND, NULL); |
| break; |
| } |
| atp->i = 0; /* first interface byte sub-group is coming (T0 is kind of TD0) */ |
| break; |
| case ISO7816_E_WTIME_EXP: |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_ATR_ERR_IND, NULL); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void atr_wait_tX_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct atr_fsm_priv *atp = fi->priv; |
| uint32_t guard_time_ms = atr_fi_gt_ms(fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| byte = get_rx_byte_evt(fi->proc.parent, data); |
| LOGPFSML(fi, LOGL_DEBUG, "RX byte '%02x'\n", byte); |
| atr_append_byte(fi, byte); |
| switch (fi->state) { |
| case ATR_S_WAIT_T0: /* see ISO/IEC 7816-3:2006 section 8.2.2 */ |
| case ATR_S_WAIT_TD: /* see ISO/IEC 7816-3:2006 section 8.2.3 */ |
| if (fi->state == ATR_S_WAIT_T0) { |
| /* save number of hist. bytes */ |
| atp->hist_len = (byte & 0x0f); |
| } else { |
| /* remember supported protocol to know if TCK will be present */ |
| atp->protocol_support |= (1<<(byte & 0x0f)); |
| } |
| atp->y = (byte & 0xf0); /* remember incoming interface bytes */ |
| atp->i++; |
| if (atp->y & 0x10) { |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_TA, guard_time_ms, T_GUARD); |
| break; |
| } |
| /* fall-through */ |
| case ATR_S_WAIT_TA: /* see ISO/IEC 7816-3:2006 section 8.2.3 */ |
| if (atp->y & 0x20) { |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_TB, guard_time_ms, T_GUARD); |
| break; |
| } |
| /* fall-through */ |
| case ATR_S_WAIT_TB: /* see ISO/IEC 7816-3:2006 section 8.2.3 */ |
| if (atp->y & 0x40) { |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_TC, guard_time_ms, T_GUARD); |
| break; |
| } |
| /* fall-through */ |
| case ATR_S_WAIT_TC: /* see ISO/IEC 7816-3:2006 section 8.2.3 */ |
| if (atp->y & 0x80) { |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_TD, guard_time_ms, T_GUARD); |
| break; |
| } else if (atp->hist_len) { |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_HIST, guard_time_ms, T_GUARD); |
| break; |
| } |
| /* fall-through */ |
| case ATR_S_WAIT_HIST: /* see ISO/IEC 7816-3:2006 section 8.2.4 */ |
| if (atp->hist_len) |
| atp->hist_len--; |
| if (atp->hist_len == 0) { |
| if (atp->protocol_support > 1) { |
| /* wait for check byte */ |
| osmo_fsm_inst_state_chg_ms(fi, ATR_S_WAIT_TCK, |
| guard_time_ms, T_GUARD); |
| break; |
| } else { |
| /* no TCK present, ATR complete; notify parent */ |
| osmo_fsm_inst_state_chg(fi, ATR_S_DONE, 0, 0); |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_ATR_DONE_IND, atp->atr); |
| } |
| } else { |
| break; |
| } |
| /* fall-through */ |
| case ATR_S_WAIT_TCK: /* see ISO/IEC 7816-3:2006 section 8.2.5 */ |
| /* verify checksum if present */ |
| if (fi->state == ATR_S_WAIT_TCK) { |
| uint8_t ui; |
| uint8_t *atr = msgb_data(atp->atr); |
| LOGPFSML(fi, LOGL_INFO, "Complete ATR: %s\n", msgb_hexdump(atp->atr)); |
| for (ui = 1; ui < msgb_length(atp->atr)-1; ui++) { |
| atp->computed_checksum ^= atr[ui]; |
| } |
| if (atp->computed_checksum != byte) { |
| /* checkum error. report to user? */ |
| LOGPFSML(fi, LOGL_ERROR, |
| "computed checksum %02x doesn't match TCK=%02x\n", |
| atp->computed_checksum, byte); |
| } |
| /* ATR complete; notify parent */ |
| osmo_fsm_inst_state_chg(fi, ATR_S_DONE, 0, 0); |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_ATR_DONE_IND, atp->atr); |
| } |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| break; |
| case ISO7816_E_WTIME_EXP: |
| switch (fi->state) { |
| case ATR_S_WAIT_HIST: |
| case ATR_S_WAIT_TCK: |
| /* Some cards have an ATR with long indication of historical bytes */ |
| /* FIXME: should we check the checksum? */ |
| osmo_fsm_inst_state_chg(fi, ATR_S_DONE, 0, 0); |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_ATR_DONE_IND, atp->atr); |
| break; |
| default: |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_ATR_ERR_IND, NULL); |
| break; |
| } |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void atr_done_onenter(struct osmo_fsm_inst *fi, uint32_t old_state) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 0); |
| } |
| |
| static const struct osmo_fsm_state atr_states[] = { |
| [ATR_S_WAIT_TS] = { |
| .name = "WAIT_TS", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_T0), |
| .action = atr_wait_ts_action, |
| .onenter = atr_wait_ts_onenter, |
| }, |
| [ATR_S_WAIT_T0] = { |
| .name = "WAIT_T0", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_TA) | |
| S(ATR_S_WAIT_TB) | |
| S(ATR_S_WAIT_TC) | |
| S(ATR_S_WAIT_TD) | |
| S(ATR_S_WAIT_HIST) | |
| S(ATR_S_WAIT_TCK) | |
| S(ATR_S_WAIT_T0), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_WAIT_TA] = { |
| .name = "WAIT_TA", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_TB) | |
| S(ATR_S_WAIT_TC) | |
| S(ATR_S_WAIT_TD) | |
| S(ATR_S_WAIT_HIST) | |
| S(ATR_S_WAIT_TCK) | |
| S(ATR_S_WAIT_T0), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_WAIT_TB] = { |
| .name = "WAIT_TB", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_TC) | |
| S(ATR_S_WAIT_TD) | |
| S(ATR_S_WAIT_HIST) | |
| S(ATR_S_WAIT_TCK) | |
| S(ATR_S_WAIT_T0), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_WAIT_TC] = { |
| .name = "WAIT_TC", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_TD) | |
| S(ATR_S_WAIT_HIST) | |
| S(ATR_S_WAIT_TCK) | |
| S(ATR_S_WAIT_T0), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_WAIT_TD] = { |
| .name = "WAIT_TD", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_TA) | |
| S(ATR_S_WAIT_TB) | |
| S(ATR_S_WAIT_TC) | |
| S(ATR_S_WAIT_TD) | |
| S(ATR_S_WAIT_HIST) | |
| S(ATR_S_WAIT_TCK) | |
| S(ATR_S_WAIT_T0), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_WAIT_HIST] = { |
| .name = "WAIT_HIST", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_WAIT_TCK) | |
| S(ATR_S_WAIT_T0) | |
| S(ATR_S_DONE), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_WAIT_TCK] = { |
| .name = "WAIT_TCK", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(ATR_S_WAIT_TS) | |
| S(ATR_S_DONE), |
| .action = atr_wait_tX_action, |
| }, |
| [ATR_S_DONE] = { |
| .name = "DONE", |
| .in_event_mask = 0, |
| .out_state_mask = S(ATR_S_WAIT_TS), |
| .onenter = atr_done_onenter |
| }, |
| |
| }; |
| static struct osmo_fsm atr_fsm = { |
| .name = "ATR", |
| .states = atr_states, |
| .num_states = ARRAY_SIZE(atr_states), |
| .log_subsys = DATR, |
| .event_names = iso7816_3_event_names, |
| }; |
| |
| /*********************************************************************** |
| * PPS FSM |
| ***********************************************************************/ |
| struct pps_fsm_priv { |
| struct msgb* tx_cmd; |
| struct msgb* rx_cmd; |
| uint8_t pps0_recv; |
| }; |
| |
| static void pps_s_pps_req_init_onenter(struct osmo_fsm_inst *fi, uint32_t old_state) |
| { |
| struct pps_fsm_priv *atp = fi->priv; |
| |
| if (!atp->rx_cmd) |
| atp->rx_cmd = msgb_alloc_c(fi, 6, "PPSRSP"); /* at most 6 */ |
| else |
| msgb_reset(atp->rx_cmd); |
| |
| /* notify in case card got pulled out */ |
| if (atp->tx_cmd && old_state != PPS_S_DONE){ |
| osmo_fsm_inst_dispatch(fi->proc.parent, |
| ISO7816_E_PPS_FAILED_IND, atp->tx_cmd); |
| atp->tx_cmd = 0; |
| } |
| } |
| |
| static void pps_s_pps_req_init_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct pps_fsm_priv *atp = fi->priv; |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| /* keep the buffer to compare it with the received response */ |
| atp->tx_cmd = data; |
| |
| switch (event) { |
| case ISO7816_E_XCEIVE_PPS_CMD: |
| osmo_fsm_inst_state_chg(fi, PPS_S_TX_PPS_REQ, 0, 0); |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_tx(ip->uart, msgb_data(data), msgb_length(data), true); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void pps_s_tx_pps_req_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| switch (event) { |
| case ISO7816_E_TX_COMPL: |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 6); |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPSX, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| |
| |
| |
| static void pps_wait_pX_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct pps_fsm_priv *atp = fi->priv; |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| byte = get_rx_byte_evt(fi->proc.parent, data); |
| LOGPFSML(fi, LOGL_DEBUG, "RX byte '%02x'\n", byte); |
| msgb_put_u8(atp->rx_cmd, byte); |
| switch (fi->state) { |
| case PPS_S_WAIT_PPSX: |
| if (byte == 0xff) |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS0, 0, 0); |
| break; |
| case PPS_S_WAIT_PPS0: |
| atp->pps0_recv = byte; |
| if(atp->pps0_recv & (1 << 4)) { |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS1, 0, 0); |
| break; |
| } else if (atp->pps0_recv & (1 << 5)) { |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS2, 0, 0); |
| break; |
| } else if (atp->pps0_recv & (1 << 6)) { |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS3, 0, 0); |
| break; |
| } |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PCK, 0, 0); |
| break; |
| case PPS_S_WAIT_PPS1: |
| if (atp->pps0_recv & (1 << 5)) { |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS2, 0, 0); |
| break; |
| } else if (atp->pps0_recv & (1 << 6)) { |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS3, 0, 0); |
| break; |
| } |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PCK, 0, 0); |
| break; |
| case PPS_S_WAIT_PPS2: |
| if (atp->pps0_recv & (1 << 6)) { |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PPS3, 0, 0); |
| break; |
| } |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PCK, 0, 0); |
| break; |
| case PPS_S_WAIT_PPS3: |
| osmo_fsm_inst_state_chg(fi, PPS_S_WAIT_PCK, 0, 0); |
| break; |
| case PPS_S_WAIT_PCK: |
| /* verify checksum if present */ |
| if (fi->state == PPS_S_WAIT_PCK) { |
| uint8_t *pps_received = msgb_data(atp->rx_cmd); |
| uint8_t *pps_sent = msgb_data(atp->tx_cmd); |
| |
| osmo_fsm_inst_state_chg(fi, PPS_S_DONE, 0, 0); |
| |
| /* pps was successful if response equals request |
| * rx buffer stays with the fsm, tx buffer gets handed back and freed |
| * by the cb */ |
| if (msgb_length(atp->rx_cmd) == msgb_length(atp->tx_cmd) && |
| !memcmp(pps_received, pps_sent, msgb_length(atp->rx_cmd))) { |
| osmo_fsm_inst_dispatch(fi->proc.parent, |
| ISO7816_E_PPS_DONE_IND, atp->tx_cmd); |
| } else { |
| osmo_fsm_inst_dispatch(fi->proc.parent, |
| ISO7816_E_PPS_FAILED_IND, atp->tx_cmd); |
| } |
| /* ownership transfer */ |
| atp->tx_cmd = 0; |
| } |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| break; |
| case ISO7816_E_WTIME_EXP: |
| osmo_fsm_inst_state_chg(fi, PPS_S_DONE, 0, 0); |
| /* FIXME: timeout handling if no pps supported ? */ |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_RX_ERR_IND, NULL); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| |
| static void pps_s_done_onenter(struct osmo_fsm_inst *fi, uint32_t old_state) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 0); |
| } |
| |
| |
| static const struct osmo_fsm_state pps_states[] = { |
| [PPS_S_PPS_REQ_INIT] = { |
| .name = "INIT", |
| .in_event_mask = S(ISO7816_E_XCEIVE_PPS_CMD) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_PPS_REQ_INIT) | |
| S(PPS_S_TX_PPS_REQ), |
| .action = pps_s_pps_req_init_action, |
| .onenter = pps_s_pps_req_init_onenter, |
| }, |
| [PPS_S_TX_PPS_REQ] = { |
| .name = "TX_PPS_REQ", |
| .in_event_mask = S(ISO7816_E_TX_COMPL), |
| .out_state_mask = S(PPS_S_WAIT_PPSX), |
| .action = pps_s_tx_pps_req_action, |
| }, |
| [PPS_S_WAIT_PPSX] = { |
| .name = "WAIT_PPSS", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_WAIT_PPS0) | |
| S(PPS_S_WAIT_PPSX), |
| .action = pps_wait_pX_action, |
| }, |
| [PPS_S_WAIT_PPS0] = { |
| .name = "WAIT_PPS0", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_WAIT_PPS1) | |
| S(PPS_S_WAIT_PPS2) | |
| S(PPS_S_WAIT_PPS3) | |
| S(PPS_S_WAIT_PCK), |
| .action = pps_wait_pX_action, |
| }, |
| [PPS_S_WAIT_PPS1] = { |
| .name = "WAIT_PPS1", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_WAIT_PPS2) | |
| S(PPS_S_WAIT_PPS3) | |
| S(PPS_S_WAIT_PCK), |
| .action = pps_wait_pX_action, |
| }, |
| [PPS_S_WAIT_PPS2] = { |
| .name = "WAIT_PPS2", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_WAIT_PPS3) | |
| S(PPS_S_WAIT_PCK), |
| .action = pps_wait_pX_action, |
| }, |
| [PPS_S_WAIT_PPS3] = { |
| .name = "WAIT_PPS3", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_WAIT_PCK), |
| .action = pps_wait_pX_action, |
| }, |
| [PPS_S_WAIT_PCK] = { |
| .name = "WAIT_PCK", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE) | |
| S(ISO7816_E_WTIME_EXP), |
| .out_state_mask = S(PPS_S_DONE), |
| .action = pps_wait_pX_action, |
| }, |
| [PPS_S_DONE] = { |
| .name = "DONE", |
| .in_event_mask = 0, |
| .out_state_mask = S(PPS_S_PPS_REQ_INIT), |
| .action = NULL, |
| .onenter = pps_s_done_onenter, |
| }, |
| }; |
| |
| static struct osmo_fsm pps_fsm = { |
| .name = "PPS", |
| .states = pps_states, |
| .num_states = ARRAY_SIZE(pps_states), |
| .log_subsys = DPPS, |
| .event_names = iso7816_3_event_names, |
| }; |
| |
| /*********************************************************************** |
| * TPDU FSM |
| ***********************************************************************/ |
| |
| /* In this FSM weu use the msgb for the TPDU as follows: |
| * - 5-byte TPDU header is at msg->data |
| * - COMMAND TPDU: |
| * - command bytes are provided after the header at msg->l2h |
| * - in case of incremental transmission, l3h points to next to-be-transmitted byte |
| * - RESPONSE TPDU: |
| * - any response bytes are stored after the header at msg->l2h |
| */ |
| |
| static inline struct osim_apdu_cmd_hdr *msgb_tpdu_hdr(struct msgb *msg) { |
| return (struct osim_apdu_cmd_hdr *) msgb_data(msg); |
| } |
| |
| struct tpdu_fsm_priv { |
| struct msgb *tpdu; |
| bool is_command; /* is this a command TPDU (true) or a response (false) */ |
| }; |
| |
| /* type-safe method to obtain iso7816_3_priv from fi */ |
| static struct tpdu_fsm_priv *get_tpdu_fsm_priv(struct osmo_fsm_inst *fi) |
| { |
| OSMO_ASSERT(fi); |
| OSMO_ASSERT(fi->fsm == &tpdu_fsm); |
| return (struct tpdu_fsm_priv *) fi->priv; |
| } |
| |
| static void tpdu_s_init_onenter(struct osmo_fsm_inst *fi, uint32_t old_state) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| |
| /* notify in case card got pulled out */ |
| if (tfp->tpdu && old_state != TPDU_S_DONE){ |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_TPDU_FAILED_IND, tfp->tpdu); |
| tfp->tpdu = 0; |
| } |
| } |
| |
| static void tpdu_s_init_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| struct osim_apdu_cmd_hdr *tpduh; |
| |
| switch (event) { |
| case ISO7816_E_XCEIVE_TPDU_CMD: |
| /* start transmission of a TPDU by sending the 5-byte header */ |
| tfp->tpdu = (struct msgb *)data; |
| OSMO_ASSERT(msgb_length(tfp->tpdu) >= sizeof(*tpduh)); |
| tfp->tpdu->l2h = msgb_data(tfp->tpdu) + sizeof(*tpduh); |
| if (msgb_l2len(tfp->tpdu)) { |
| tfp->is_command = true; |
| tfp->tpdu->l3h = tfp->tpdu->l2h; /* next tx byte == first byte of body */ |
| } else |
| tfp->is_command = false; |
| tpduh = msgb_tpdu_hdr(tfp->tpdu); |
| LOGPFSML(fi, LOGL_DEBUG, "Transmitting %s TPDU header %s via UART\n", |
| tfp->is_command ? "COMMAND" : "RESPONSE", |
| osmo_hexdump_nospc((uint8_t *) tpduh, sizeof(*tpduh))); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_TX_HDR, 0, 0); |
| card_uart_tx(ip->uart, (uint8_t *) tpduh, sizeof(*tpduh), true); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| #include <hal_gpio.h> |
| static void tpdu_s_tx_hdr_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| OSMO_ASSERT(fi->fsm == &tpdu_fsm); |
| switch (event) { |
| case ISO7816_E_TX_COMPL: |
| |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| /* Rx of single byte is already enabled by previous card_uart_tx() call */ |
| osmo_fsm_inst_state_chg(fi, TPDU_S_PROCEDURE, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| |
| |
| static void tpdu_s_procedure_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osim_apdu_cmd_hdr *tpduh = msgb_tpdu_hdr(tfp->tpdu); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| byte = get_rx_byte_evt(fi->proc.parent, data); |
| LOGPFSML(fi, LOGL_DEBUG, "Received 0x%02x from UART\n", byte); |
| if (byte == 0x60) { |
| /* NULL: wait for another procedure byte */ |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_PROCEDURE, 0, 0); |
| } else if ((byte >= 0x60 && byte <= 0x6f) || (byte >= 0x90 && byte <= 0x9f)) { |
| //msgb_apdu_sw(tfp->apdu) = byte << 8; |
| msgb_put(tfp->tpdu, byte); |
| /* receive second SW byte (SW2) */ |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_SW2, 0, 0); |
| break; |
| } else if (byte == tpduh->ins) { |
| if (tfp->is_command) { |
| /* transmit all remaining bytes */ |
| #if 0 |
| // rx -> tx delay |
| gpio_set_pin_level(PIN_PB12, true); |
| delay_us(1); |
| gpio_set_pin_level(PIN_PB12, false); |
| #endif |
| card_uart_tx(ip->uart, msgb_l2(tfp->tpdu), msgb_l2len(tfp->tpdu), true); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_TX_REMAINING, 0, 0); |
| } else { |
| card_uart_set_rx_threshold(ip->uart, tpduh->p3); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, tpduh->p3); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_RX_REMAINING, 0, 0); |
| } |
| } else if (byte == (tpduh->ins ^ 0xFF)) { |
| /* transmit/recieve single byte then wait for proc */ |
| if (tfp->is_command) { |
| /* transmit *next*, not first byte */ |
| OSMO_ASSERT(msgb_l3len(tfp->tpdu) >= 0); |
| card_uart_tx(ip->uart, msgb_l3(tfp->tpdu), 1, false); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_TX_SINGLE, 0, 0); |
| } else { |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_RX_SINGLE, 0, 0); |
| } |
| } else |
| OSMO_ASSERT(0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| /* UART is transmitting remaining data; we wait for ISO7816_E_TX_COMPL */ |
| static void tpdu_s_tx_remaining_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| switch (event) { |
| case ISO7816_E_TX_COMPL: |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_SW1, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| /* UART is transmitting single byte of data; we wait for ISO7816_E_TX_COMPL */ |
| static void tpdu_s_tx_single_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| switch (event) { |
| case ISO7816_E_TX_COMPL: |
| tfp->tpdu->l3h += 1; |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| if (msgb_l3len(tfp->tpdu)) |
| osmo_fsm_inst_state_chg(fi, TPDU_S_PROCEDURE, 0, 0); |
| else |
| osmo_fsm_inst_state_chg(fi, TPDU_S_SW1, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| /* UART is receiving remaining data; we wait for ISO7816_E_RX_COMPL */ |
| static void tpdu_s_rx_remaining_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osim_apdu_cmd_hdr *tpduh = msgb_tpdu_hdr(tfp->tpdu); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| int rc; |
| |
| switch (event) { |
| case ISO7816_E_RX_COMPL: |
| /* retrieve pending byte(s) */ |
| rc = card_uart_rx(ip->uart, msgb_l2(tfp->tpdu), tpduh->p3); |
| OSMO_ASSERT(rc > 0); |
| msgb_put(tfp->tpdu, rc); |
| if (msgb_l2len(tfp->tpdu) != tpduh->p3) { |
| LOGPFSML(fi, LOGL_ERROR, "expected %u bytes; read %d\n", tpduh->p3, |
| msgb_l2len(tfp->tpdu)); |
| } |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_SW1, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| /* UART is receiving single byte of data; we wait for ISO7816_E_RX_SINGLE */ |
| static void tpdu_s_rx_single_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osim_apdu_cmd_hdr *tpduh = msgb_tpdu_hdr(tfp->tpdu); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| byte = get_rx_byte_evt(fi->proc.parent, data); |
| LOGPFSML(fi, LOGL_DEBUG, "Received 0x%02x from UART\n", byte); |
| msgb_put_u8(tfp->tpdu, byte); |
| |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| |
| /* determine if number of expected bytes received */ |
| if (msgb_l2len(tfp->tpdu) == tpduh->p3) |
| osmo_fsm_inst_state_chg(fi, TPDU_S_SW1, 0, 0); |
| else |
| osmo_fsm_inst_state_chg(fi, TPDU_S_PROCEDURE, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void tpdu_s_sw1_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| byte = get_rx_byte_evt(fi->proc.parent, data); |
| LOGPFSML(fi, LOGL_DEBUG, "Received 0x%02x from UART\n", byte); |
| /* record byte */ |
| //msgb_apdu_sw(tfp->apdu) = byte << 8; |
| msgb_put_u8(tfp->tpdu, byte); |
| card_uart_set_rx_threshold(ip->uart, 1); |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 1); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_SW2, 0, 0); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void tpdu_s_sw2_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| struct tpdu_fsm_priv *tfp = get_tpdu_fsm_priv(fi); |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| uint8_t byte; |
| |
| switch (event) { |
| case ISO7816_E_RX_SINGLE: |
| byte = get_rx_byte_evt(fi->proc.parent, data); |
| LOGPFSML(fi, LOGL_DEBUG, "Received 0x%02x from UART\n", byte); |
| /* record SW2 byte */ |
| //msgb_apdu_sw(tfp->apdu) &= 0xFF00; |
| //msgb_apdu_sw(tfp->apdu) |= byte; |
| msgb_put_u8(tfp->tpdu, byte); |
| osmo_fsm_inst_state_chg(fi, TPDU_S_DONE, 0, 0); |
| /* Notify parent FSM */ |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_TPDU_DONE_IND, tfp->tpdu); |
| |
| /* ownership transfer */ |
| tfp->tpdu = 0; |
| break; |
| default: |
| OSMO_ASSERT(0); |
| } |
| } |
| |
| static void tpdu_allstate_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| OSMO_ASSERT(fi->fsm == &tpdu_fsm); |
| |
| switch (event) { |
| case ISO7816_E_RX_ERR_IND: |
| case ISO7816_E_TX_ERR_IND: |
| /* FIXME: handle this in some different way */ |
| osmo_fsm_inst_state_chg(fi, TPDU_S_DONE, 0, 0); |
| osmo_fsm_inst_dispatch(fi->proc.parent, ISO7816_E_TPDU_FAILED_IND, NULL); |
| break; |
| case ISO7816_E_TPDU_CLEAR_REQ: |
| osmo_fsm_inst_state_chg(fi, TPDU_S_INIT, 0, 0); |
| break; |
| } |
| } |
| |
| |
| static void tpdu_s_done_onenter(struct osmo_fsm_inst *fi, uint32_t old_state) |
| { |
| struct osmo_fsm_inst *parent_fi = fi->proc.parent; |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(parent_fi); |
| |
| card_uart_ctrl(ip->uart, CUART_CTL_RX_TIMER_HINT, 0); |
| } |
| |
| static const struct osmo_fsm_state tpdu_states[] = { |
| [TPDU_S_INIT] = { |
| .name = "INIT", |
| .in_event_mask = S(ISO7816_E_XCEIVE_TPDU_CMD) | |
| S(ISO7816_E_TX_COMPL), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_TX_HDR), |
| .action = tpdu_s_init_action, |
| .onenter = tpdu_s_init_onenter, |
| }, |
| [TPDU_S_TX_HDR] = { |
| .name = "TX_HDR", |
| .in_event_mask = S(ISO7816_E_TX_COMPL), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_PROCEDURE), |
| .action = tpdu_s_tx_hdr_action, |
| }, |
| [TPDU_S_PROCEDURE] = { |
| .name = "PROCEDURE", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_PROCEDURE) | |
| S(TPDU_S_RX_REMAINING) | |
| S(TPDU_S_RX_SINGLE) | |
| S(TPDU_S_TX_REMAINING) | |
| S(TPDU_S_TX_SINGLE) | |
| S(TPDU_S_SW2), |
| .action = tpdu_s_procedure_action, |
| }, |
| [TPDU_S_TX_REMAINING] = { |
| .name = "TX_REMAINING", |
| .in_event_mask = S(ISO7816_E_TX_COMPL), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_SW1), |
| .action = tpdu_s_tx_remaining_action, |
| }, |
| [TPDU_S_TX_SINGLE] = { |
| .name = "TX_SINGLE", |
| .in_event_mask = S(ISO7816_E_TX_COMPL), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_PROCEDURE), |
| .action = tpdu_s_tx_single_action, |
| }, |
| [TPDU_S_RX_REMAINING] = { |
| .name = "RX_REMAINING", |
| .in_event_mask = S(ISO7816_E_RX_COMPL), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_SW1), |
| .action = tpdu_s_rx_remaining_action, |
| }, |
| [TPDU_S_RX_SINGLE] = { |
| .name = "RX_SINGLE", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_PROCEDURE), |
| .action = tpdu_s_rx_single_action, |
| }, |
| [TPDU_S_SW1] = { |
| .name = "SW1", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_SW2), |
| .action = tpdu_s_sw1_action, |
| }, |
| [TPDU_S_SW2] = { |
| .name = "SW2", |
| .in_event_mask = S(ISO7816_E_RX_SINGLE), |
| .out_state_mask = S(TPDU_S_INIT) | |
| S(TPDU_S_DONE), |
| .action = tpdu_s_sw2_action, |
| }, |
| [TPDU_S_DONE] = { |
| .name = "DONE", |
| .in_event_mask = 0, |
| .out_state_mask = S(TPDU_S_INIT), |
| .action = NULL, |
| .onenter = tpdu_s_done_onenter, |
| }, |
| }; |
| static struct osmo_fsm tpdu_fsm = { |
| .name = "TPDU", |
| .states = tpdu_states, |
| .num_states = ARRAY_SIZE(tpdu_states), |
| .allstate_event_mask = S(ISO7816_E_RX_ERR_IND) | |
| S(ISO7816_E_TX_ERR_IND) | |
| S(ISO7816_E_TPDU_CLEAR_REQ), |
| .allstate_action = tpdu_allstate_action, |
| .log_subsys = DTPDU, |
| .event_names = iso7816_3_event_names, |
| }; |
| |
| struct osmo_fsm_inst *iso7816_fsm_alloc(void *ctx, int log_level, const char *id, |
| struct card_uart *cuart, iso7816_user_cb user_cb, |
| void *user_priv) |
| { |
| struct iso7816_3_priv *ip; |
| struct osmo_fsm_inst *fi; |
| |
| fi = osmo_fsm_inst_alloc(&iso7816_3_fsm, ctx, NULL, log_level, id); |
| ip = talloc_zero(fi, struct iso7816_3_priv); |
| if (!ip) |
| goto out_fi; |
| fi->priv = ip; |
| |
| ip->uart = cuart; |
| cuart->priv = fi; |
| cuart->handle_event = tpdu_uart_notification; |
| |
| ip->user_cb = user_cb; |
| ip->user_priv = user_priv; |
| |
| ip->atr_fi = osmo_fsm_inst_alloc_child(&atr_fsm, fi, ISO7816_E_SW_ERR_IND); |
| if (!ip->atr_fi) |
| goto out_fi; |
| ip->atr_fi->priv = talloc_zero(ip->atr_fi, struct atr_fsm_priv); |
| if (!ip->atr_fi->priv) |
| goto out_atr; |
| |
| ip->tpdu_fi = osmo_fsm_inst_alloc_child(&tpdu_fsm, fi, ISO7816_E_SW_ERR_IND); |
| if (!ip->tpdu_fi) |
| goto out_atr; |
| ip->tpdu_fi->priv = talloc_zero(ip->tpdu_fi, struct tpdu_fsm_priv); |
| if (!ip->tpdu_fi->priv) |
| goto out_tpdu; |
| |
| #if 1 |
| ip->pps_fi = osmo_fsm_inst_alloc_child(&pps_fsm, fi, ISO7816_E_SW_ERR_IND); |
| if (!ip->pps_fi) |
| goto out_tpdu; |
| ip->pps_fi->priv = talloc_zero(ip->pps_fi, struct pps_fsm_priv); |
| if (!ip->pps_fi->priv) |
| goto out_pps; |
| #endif |
| |
| /* This ensures the 'onenter' function of the initial state is called */ |
| osmo_fsm_inst_state_chg(fi, ISO7816_S_RESET, 0, 0); |
| |
| return fi; |
| |
| #if 1 |
| out_pps: |
| osmo_fsm_inst_free(ip->pps_fi); |
| #endif |
| out_tpdu: |
| osmo_fsm_inst_free(ip->tpdu_fi); |
| out_atr: |
| osmo_fsm_inst_free(ip->atr_fi); |
| out_fi: |
| osmo_fsm_inst_free(fi); |
| cuart->priv = NULL; |
| return NULL; |
| } |
| |
| void *iso7816_fsm_get_user_priv(struct osmo_fsm_inst *fi) |
| { |
| struct iso7816_3_priv *ip = get_iso7816_3_priv(fi); |
| return ip->user_priv; |
| } |
| |
| |
| static __attribute__((constructor)) void on_dso_load_iso7816(void) |
| { |
| osmo_fsm_register(&iso7816_3_fsm); |
| osmo_fsm_register(&atr_fsm); |
| osmo_fsm_register(&tpdu_fsm); |
| osmo_fsm_register(&pps_fsm); |
| } |