1132 lines
31 KiB
C
1132 lines
31 KiB
C
/* (C) 2018-2019 by Harald Welte <laforge@gnumonks.org>
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* (C) 2018 by sysmocom - s.f.m.c. GmbH, Author: Kevin Redon
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*
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* All Rights Reserved
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <errno.h>
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#include <string.h>
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#include <talloc.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/application.h>
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#include <osmocom/abis/ipa.h>
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#include <osmocom/gsm/protocol/ipaccess.h>
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#include "rspro_util.h"
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#include "client.h"
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#include "debug.h"
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#include <unistd.h>
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#include <stdio.h>
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#include <linux/limits.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <getopt.h>
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#include <libusb.h>
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#include <osmocom/usb/libusb.h>
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#include <osmocom/simtrace2/simtrace_prot.h>
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#include <osmocom/simtrace2/simtrace_usb.h>
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#include <osmocom/simtrace2/apdu_dispatch.h>
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#include <osmocom/core/gsmtap.h>
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#include <osmocom/core/gsmtap_util.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/socket.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/sim/class_tables.h>
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#include <osmocom/sim/sim.h>
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/* transport to a SIMtrace device */
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struct st_transport {
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/* USB */
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struct libusb_device_handle *usb_devh;
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struct {
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uint8_t in;
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uint8_t out;
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uint8_t irq_in;
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} usb_ep;
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};
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/* a SIMtrace slot; communicates over a transport */
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struct st_slot {
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/* transport through which the slot can be reached */
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struct st_transport *transp;
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/* number of the slot within the transport */
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uint8_t slot_nr;
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};
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/* One istance of card emulation */
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struct cardem_inst {
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/* slot on which this card emulation instance runs */
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struct st_slot *slot;
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};
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/* global GSMTAP instance */
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static struct gsmtap_inst *g_gti;
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static struct bankd_client *g_client;
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static void *g_tall_ctx;
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void __thread *talloc_asn1_ctx;
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int asn_debug;
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__attribute__((unused)) static int gsmtap_send_sim(const uint8_t *apdu, unsigned int len)
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{
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struct gsmtap_hdr *gh;
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unsigned int gross_len = len + sizeof(*gh);
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uint8_t *buf = malloc(gross_len);
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int rc;
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if (!buf)
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return -ENOMEM;
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memset(buf, 0, sizeof(*gh));
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gh = (struct gsmtap_hdr *) buf;
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gh->version = GSMTAP_VERSION;
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gh->hdr_len = sizeof(*gh)/4;
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gh->type = GSMTAP_TYPE_SIM;
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memcpy(buf + sizeof(*gh), apdu, len);
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rc = write(gsmtap_inst_fd(g_gti), buf, gross_len);
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if (rc < 0) {
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perror("write gsmtap");
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free(buf);
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return rc;
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}
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free(buf);
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return 0;
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}
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/***********************************************************************
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* SIMTRACE core protocol
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***********************************************************************/
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/*! \brief allocate a message buffer for simtrace use */
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static struct msgb *st_msgb_alloc(void)
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{
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return msgb_alloc_headroom(1024+32, 32, "SIMtrace");
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}
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#if 0
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static void apdu_out_cb(uint8_t *buf, unsigned int len, void *user_data)
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{
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printf("APDU: %s\n", osmo_hexdump(buf, len));
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gsmtap_send_sim(buf, len);
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}
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#endif
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static void usb_out_xfer_cb(struct libusb_transfer *xfer)
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{
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struct msgb *msg = xfer->user_data;
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switch (xfer->status) {
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case LIBUSB_TRANSFER_COMPLETED:
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break;
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case LIBUSB_TRANSFER_NO_DEVICE:
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fprintf(stderr, "USB device disappeared\n");
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exit(23);
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break;
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default:
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osmo_panic("USB OUT transfer failed, status=%u\n", xfer->status);
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break;
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}
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msgb_free(msg);
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libusb_free_transfer(xfer);
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}
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/*! \brief Transmit a given command to the SIMtrace2 device */
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int st_transp_tx_msg(struct st_transport *transp, struct msgb *msg)
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{
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struct libusb_transfer *xfer;
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int rc;
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printf("SIMtrace <- %s\n", msgb_hexdump(msg));
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xfer = libusb_alloc_transfer(0);
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OSMO_ASSERT(xfer);
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xfer->dev_handle = transp->usb_devh;
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xfer->flags = 0;
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xfer->type = LIBUSB_TRANSFER_TYPE_BULK;
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xfer->endpoint = transp->usb_ep.out;
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xfer->timeout = 1000;
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xfer->user_data = msg;
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xfer->length = msgb_length(msg);
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xfer->buffer = msgb_data(msg);
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xfer->callback = usb_out_xfer_cb;
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/* submit the OUT transfer */
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rc = libusb_submit_transfer(xfer);
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OSMO_ASSERT(rc == 0);
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return rc;
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}
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static struct simtrace_msg_hdr *st_push_hdr(struct msgb *msg, uint8_t msg_class, uint8_t msg_type,
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uint8_t slot_nr)
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{
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struct simtrace_msg_hdr *sh;
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sh = (struct simtrace_msg_hdr *) msgb_push(msg, sizeof(*sh));
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memset(sh, 0, sizeof(*sh));
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sh->msg_class = msg_class;
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sh->msg_type = msg_type;
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sh->slot_nr = slot_nr;
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sh->msg_len = msgb_length(msg);
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return sh;
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}
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/* transmit a given message to a specified slot. Expects all headers
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* present before calling the function */
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int st_slot_tx_msg(struct st_slot *slot, struct msgb *msg,
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uint8_t msg_class, uint8_t msg_type)
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{
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st_push_hdr(msg, msg_class, msg_type, slot->slot_nr);
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return st_transp_tx_msg(slot->transp, msg);
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}
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/***********************************************************************
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* Card Emulation protocol
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***********************************************************************/
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/*! \brief Request the SIMtrace2 to generate a card-insert signal */
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static int cardem_request_card_insert(struct cardem_inst *ci, bool inserted)
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{
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struct msgb *msg = st_msgb_alloc();
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struct cardemu_usb_msg_cardinsert *cins;
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cins = (struct cardemu_usb_msg_cardinsert *) msgb_put(msg, sizeof(*cins));
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memset(cins, 0, sizeof(*cins));
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if (inserted)
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cins->card_insert = 1;
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return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_CARDINSERT);
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}
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/*! \brief Request the SIMtrace2 to transmit a Procedure Byte, then Rx */
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static int cardem_request_pb_and_rx(struct cardem_inst *ci, uint8_t pb, uint8_t le)
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{
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struct msgb *msg = st_msgb_alloc();
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struct cardemu_usb_msg_tx_data *txd;
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txd = (struct cardemu_usb_msg_tx_data *) msgb_put(msg, sizeof(*txd));
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printf("SIMtrace <= %s(%02x, %d)\n", __func__, pb, le);
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memset(txd, 0, sizeof(*txd));
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txd->data_len = 1;
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txd->flags = CEMU_DATA_F_PB_AND_RX;
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/* one data byte */
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msgb_put_u8(msg, pb);
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return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_TX_DATA);
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}
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/*! \brief Request the SIMtrace2 to transmit a Procedure Byte, then Tx */
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static int cardem_request_pb_and_tx(struct cardem_inst *ci, uint8_t pb,
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const uint8_t *data, uint16_t data_len_in)
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{
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struct msgb *msg = st_msgb_alloc();
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struct cardemu_usb_msg_tx_data *txd;
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uint8_t *cur;
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txd = (struct cardemu_usb_msg_tx_data *) msgb_put(msg, sizeof(*txd));
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printf("SIMtrace <= %s(%02x, %s, %d)\n", __func__, pb,
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osmo_hexdump(data, data_len_in), data_len_in);
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memset(txd, 0, sizeof(*txd));
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txd->data_len = 1 + data_len_in;
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txd->flags = CEMU_DATA_F_PB_AND_TX;
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/* procedure byte */
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msgb_put_u8(msg, pb);
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/* data */
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cur = msgb_put(msg, data_len_in);
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memcpy(cur, data, data_len_in);
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return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_TX_DATA);
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}
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/*! \brief Request the SIMtrace2 to send a Status Word */
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static int cardem_request_sw_tx(struct cardem_inst *ci, const uint8_t *sw)
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{
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struct msgb *msg = st_msgb_alloc();
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struct cardemu_usb_msg_tx_data *txd;
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uint8_t *cur;
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txd = (struct cardemu_usb_msg_tx_data *) msgb_put(msg, sizeof(*txd));
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printf("SIMtrace <= %s(%02x %02x)\n", __func__, sw[0], sw[1]);
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memset(txd, 0, sizeof(*txd));
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txd->data_len = 2;
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txd->flags = CEMU_DATA_F_PB_AND_TX | CEMU_DATA_F_FINAL;
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cur = msgb_put(msg, 2);
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cur[0] = sw[0];
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cur[1] = sw[1];
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return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_TX_DATA);
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}
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/*! \brief Request the SIMtrace2 to send a Status Word */
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static int cardem_request_config(struct cardem_inst *ci, uint32_t features)
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{
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struct msgb *msg = st_msgb_alloc();
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struct cardemu_usb_msg_config *cfg;
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cfg = (struct cardemu_usb_msg_config *) msgb_put(msg, sizeof(*cfg));
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printf("SIMtrace <= %s(%08x)\n", __func__, features);
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memset(cfg, 0, sizeof(*cfg));
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cfg->features = features;
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return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_BD_CEMU_CONFIG);
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}
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// FIXME check if the ATR actually includes a checksum
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__attribute__((unused)) static void atr_update_csum(uint8_t *atr, unsigned int atr_len)
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{
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uint8_t csum = 0;
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int i;
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for (i = 1; i < atr_len - 1; i++)
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csum = csum ^ atr[i];
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atr[atr_len-1] = csum;
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}
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static int cardem_request_set_atr(struct cardem_inst *ci, const uint8_t *atr, unsigned int atr_len)
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{
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struct msgb *msg = st_msgb_alloc();
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struct cardemu_usb_msg_set_atr *satr;
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uint8_t *cur;
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satr = (struct cardemu_usb_msg_set_atr *) msgb_put(msg, sizeof(*satr));
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printf("SIMtrace <= %s(%s)\n", __func__, osmo_hexdump(atr, atr_len));
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memset(satr, 0, sizeof(*satr));
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satr->atr_len = atr_len;
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cur = msgb_put(msg, atr_len);
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memcpy(cur, atr, atr_len);
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return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_SET_ATR);
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}
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/***********************************************************************
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* Modem Control protocol
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***********************************************************************/
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static int _modem_reset(struct st_slot *slot, uint8_t asserted, uint16_t pulse_ms)
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{
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struct msgb *msg = st_msgb_alloc();
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struct st_modem_reset *sr ;
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sr = (struct st_modem_reset *) msgb_put(msg, sizeof(*sr));
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sr->asserted = asserted;
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sr->pulse_duration_msec = pulse_ms;
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return st_slot_tx_msg(slot, msg, SIMTRACE_MSGC_MODEM, SIMTRACE_MSGT_DT_MODEM_RESET);
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}
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/*! \brief pulse the RESET line of the modem for \a duration_ms milli-seconds*/
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int st_modem_reset_pulse(struct st_slot *slot, uint16_t duration_ms)
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{
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return _modem_reset(slot, 2, duration_ms);
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}
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/*! \brief assert the RESET line of the modem */
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int st_modem_reset_active(struct st_slot *slot)
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{
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return _modem_reset(slot, 1, 0);
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}
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/*! \brief de-assert the RESET line of the modem */
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int st_modem_reset_inactive(struct st_slot *slot)
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{
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return _modem_reset(slot, 0, 0);
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}
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static int _modem_sim_select(struct st_slot *slot, uint8_t remote_sim)
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{
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struct msgb *msg = st_msgb_alloc();
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struct st_modem_sim_select *ss;
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ss = (struct st_modem_sim_select *) msgb_put(msg, sizeof(*ss));
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ss->remote_sim = remote_sim;
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return st_slot_tx_msg(slot, msg, SIMTRACE_MSGC_MODEM, SIMTRACE_MSGT_DT_MODEM_SIM_SELECT);
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}
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/*! \brief select local (physical) SIM for given slot */
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int st_modem_sim_select_local(struct st_slot *slot)
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{
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return _modem_sim_select(slot, 0);
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}
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/*! \brief select remote (emulated/forwarded) SIM for given slot */
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int st_modem_sim_select_remote(struct st_slot *slot)
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{
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return _modem_sim_select(slot, 1);
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}
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/*! \brief Request slot to send us status information about the modem */
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int st_modem_get_status(struct st_slot *slot)
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{
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struct msgb *msg = st_msgb_alloc();
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return st_slot_tx_msg(slot, msg, SIMTRACE_MSGC_MODEM, SIMTRACE_MSGT_BD_MODEM_STATUS);
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}
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/***********************************************************************
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* Incoming Messages
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***********************************************************************/
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/*! \brief Process a STATUS message from the SIMtrace2 */
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static int process_do_status(struct cardem_inst *ci, uint8_t *buf, int len)
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{
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struct cardemu_usb_msg_status *status;
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status = (struct cardemu_usb_msg_status *) buf;
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printf("SIMtrace => STATUS: flags=0x%x, fi=%u, di=%u, wi=%u wtime=%u\n",
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status->flags, status->fi, status->di, status->wi,
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status->waiting_time);
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return 0;
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}
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/*! \brief Process a PTS indication message from the SIMtrace2 */
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static int process_do_pts(struct cardem_inst *ci, uint8_t *buf, int len)
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{
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struct cardemu_usb_msg_pts_info *pts;
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pts = (struct cardemu_usb_msg_pts_info *) buf;
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printf("SIMtrace => PTS req: %s\n", osmo_hexdump(pts->req, sizeof(pts->req)));
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return 0;
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}
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/*! \brief Process a ERROR indication message from the SIMtrace2 */
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__attribute__((unused)) static int process_do_error(struct cardem_inst *ci, uint8_t *buf, int len)
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{
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struct cardemu_usb_msg_error *err;
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err = (struct cardemu_usb_msg_error *) buf;
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printf("SIMtrace => ERROR: %u/%u/%u: %s\n",
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err->severity, err->subsystem, err->code,
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err->msg_len ? (char *)err->msg : "");
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return 0;
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}
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static struct osmo_apdu_context ac; // this will hold the complete APDU (across calls)
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/*! \brief Process a RX-DATA indication message from the SIMtrace2 */
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static int process_do_rx_da(struct cardem_inst *ci, uint8_t *buf, int len)
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{
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struct cardemu_usb_msg_rx_data *data = (struct cardemu_usb_msg_rx_data *) buf; // cast the data from the USB message
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int rc;
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printf("SIMtrace => DATA: flags=%x, %s: ", data->flags,
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osmo_hexdump(data->data, data->data_len));
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rc = osmo_apdu_segment_in(&ac, data->data, data->data_len,
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data->flags & CEMU_DATA_F_TPDU_HDR); // parse the APDU data in the USB message
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if (rc & APDU_ACT_TX_CAPDU_TO_CARD) { // there is no pending data coming from the modem
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uint8_t apdu_command[sizeof(ac.hdr) + ac.lc.tot]; // to store the APDU command to send
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memcpy(apdu_command, &ac.hdr, sizeof(ac.hdr)); // copy APDU command header
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if (ac.lc.tot) {
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memcpy(apdu_command + sizeof(ac.hdr), ac.dc, ac.lc.tot); // copy APDU command data
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}
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// send APDU to card
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BankSlot_t bslot;
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bank_slot2rspro(&bslot, &g_client->bankd_slot);
|
|
RsproPDU_t *pdu = rspro_gen_TpduModem2Card(g_client->srv_conn.clslot, &bslot, apdu_command, sizeof(ac.hdr) + ac.lc.tot); // create RSPRO packet
|
|
server_conn_send_rspro(&g_client->bankd_conn, pdu);
|
|
// the response will come separately
|
|
} else if (ac.lc.tot > ac.lc.cur) { // there is pending data from the modem
|
|
cardem_request_pb_and_rx(ci, ac.hdr.ins, ac.lc.tot - ac.lc.cur); // send procedure byte to get remaining data
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#if 0
|
|
case SIMTRACE_CMD_DO_ERROR
|
|
rc = process_do_error(ci, buf, len);
|
|
break;
|
|
#endif
|
|
|
|
/*! \brief Process an incoming message from the SIMtrace2 */
|
|
static int process_usb_msg(struct cardem_inst *ci, uint8_t *buf, int len)
|
|
{
|
|
struct simtrace_msg_hdr *sh = (struct simtrace_msg_hdr *)buf;
|
|
int rc;
|
|
|
|
printf("SIMtrace -> %s\n", osmo_hexdump(buf, len));
|
|
|
|
buf += sizeof(*sh);
|
|
|
|
switch (sh->msg_type) {
|
|
case SIMTRACE_MSGT_BD_CEMU_STATUS:
|
|
rc = process_do_status(ci, buf, len);
|
|
break;
|
|
case SIMTRACE_MSGT_DO_CEMU_PTS:
|
|
rc = process_do_pts(ci, buf, len);
|
|
break;
|
|
case SIMTRACE_MSGT_DO_CEMU_RX_DATA:
|
|
rc = process_do_rx_da(ci, buf, len);
|
|
break;
|
|
case SIMTRACE_MSGT_BD_CEMU_CONFIG:
|
|
/* firmware confirms configuration change; ignore */
|
|
break;
|
|
default:
|
|
printf("unknown simtrace msg type 0x%02x\n", sh->msg_type);
|
|
rc = -1;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/*! \brief Process a STATUS message on IRQ endpoint from the SIMtrace2 */
|
|
static int process_irq_status(struct cardem_inst *ci, const uint8_t *buf, int len)
|
|
{
|
|
const struct cardemu_usb_msg_status *status = (struct cardemu_usb_msg_status *) buf;
|
|
|
|
printf("SIMtrace IRQ STATUS: flags=0x%x, fi=%u, di=%u, wi=%u wtime=%u\n",
|
|
status->flags, status->fi, status->di, status->wi,
|
|
status->waiting_time);
|
|
|
|
BankSlot_t bslot;
|
|
bank_slot2rspro(&bslot, &g_client->bankd_slot);
|
|
RsproPDU_t *pdu = rspro_gen_ClientSlotStatusInd(g_client->srv_conn.clslot, &bslot,
|
|
status->flags & CEMU_STATUS_F_RESET_ACTIVE,
|
|
status->flags & CEMU_STATUS_F_VCC_PRESENT,
|
|
status->flags & CEMU_STATUS_F_CLK_ACTIVE,
|
|
-1 /* FIXME: make this dependent on board */);
|
|
server_conn_send_rspro(&g_client->bankd_conn, pdu);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_usb_msg_irq(struct cardem_inst *ci, const uint8_t *buf, unsigned int len)
|
|
{
|
|
struct simtrace_msg_hdr *sh = (struct simtrace_msg_hdr *)buf;
|
|
int rc;
|
|
|
|
printf("SIMtrace IRQ %s\n", osmo_hexdump(buf, len));
|
|
|
|
buf += sizeof(*sh);
|
|
|
|
switch (sh->msg_type) {
|
|
case SIMTRACE_MSGT_BD_CEMU_STATUS:
|
|
rc = process_irq_status(ci, buf, len);
|
|
break;
|
|
default:
|
|
printf("unknown simtrace msg type 0x%02x\n", sh->msg_type);
|
|
rc = -1;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void usb_in_xfer_cb(struct libusb_transfer *xfer)
|
|
{
|
|
struct cardem_inst *ci = xfer->user_data;
|
|
int rc;
|
|
|
|
switch (xfer->status) {
|
|
case LIBUSB_TRANSFER_COMPLETED:
|
|
/* hand the message up the stack */
|
|
process_usb_msg(ci, xfer->buffer, xfer->actual_length);
|
|
break;
|
|
case LIBUSB_TRANSFER_NO_DEVICE:
|
|
fprintf(stderr, "USB device disappeared\n");
|
|
exit(23);
|
|
break;
|
|
default:
|
|
osmo_panic("USB IN transfer failed, status=%u\n", xfer->status);
|
|
break;
|
|
}
|
|
|
|
/* re-submit the IN transfer */
|
|
rc = libusb_submit_transfer(xfer);
|
|
OSMO_ASSERT(rc == 0);
|
|
}
|
|
|
|
|
|
static void allocate_and_submit_in(struct cardem_inst *ci)
|
|
{
|
|
struct st_transport *transp = ci->slot->transp;
|
|
struct libusb_transfer *xfer;
|
|
int rc;
|
|
|
|
xfer = libusb_alloc_transfer(0);
|
|
OSMO_ASSERT(xfer);
|
|
xfer->dev_handle = transp->usb_devh;
|
|
xfer->flags = 0;
|
|
xfer->type = LIBUSB_TRANSFER_TYPE_BULK;
|
|
xfer->endpoint = transp->usb_ep.in;
|
|
xfer->timeout = 0;
|
|
xfer->user_data = ci;
|
|
xfer->length = 16*256;
|
|
|
|
xfer->buffer = libusb_dev_mem_alloc(xfer->dev_handle, xfer->length);
|
|
OSMO_ASSERT(xfer->buffer);
|
|
xfer->callback = usb_in_xfer_cb;
|
|
|
|
/* submit the IN transfer */
|
|
rc = libusb_submit_transfer(xfer);
|
|
OSMO_ASSERT(rc == 0);
|
|
}
|
|
|
|
|
|
static void usb_irq_xfer_cb(struct libusb_transfer *xfer)
|
|
{
|
|
struct cardem_inst *ci = xfer->user_data;
|
|
int rc;
|
|
|
|
switch (xfer->status) {
|
|
case LIBUSB_TRANSFER_COMPLETED:
|
|
process_usb_msg_irq(ci, xfer->buffer, xfer->actual_length);
|
|
break;
|
|
case LIBUSB_TRANSFER_NO_DEVICE:
|
|
fprintf(stderr, "USB device disappeared\n");
|
|
exit(23);
|
|
break;
|
|
default:
|
|
osmo_panic("USB IRQ transfer failed, status=%u\n", xfer->status);
|
|
break;
|
|
}
|
|
|
|
/* re-submit the IN transfer */
|
|
rc = libusb_submit_transfer(xfer);
|
|
OSMO_ASSERT(rc == 0);
|
|
}
|
|
|
|
|
|
static void allocate_and_submit_irq(struct cardem_inst *ci)
|
|
{
|
|
struct st_transport *transp = ci->slot->transp;
|
|
struct libusb_transfer *xfer;
|
|
int rc;
|
|
|
|
xfer = libusb_alloc_transfer(0);
|
|
OSMO_ASSERT(xfer);
|
|
xfer->dev_handle = transp->usb_devh;
|
|
xfer->flags = 0;
|
|
xfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT;
|
|
xfer->endpoint = transp->usb_ep.irq_in;
|
|
xfer->timeout = 0;
|
|
xfer->user_data = ci;
|
|
xfer->length = 64;
|
|
|
|
xfer->buffer = libusb_dev_mem_alloc(xfer->dev_handle, xfer->length);
|
|
OSMO_ASSERT(xfer->buffer);
|
|
xfer->callback = usb_irq_xfer_cb;
|
|
|
|
/* submit the IN transfer */
|
|
rc = libusb_submit_transfer(xfer);
|
|
OSMO_ASSERT(rc == 0);
|
|
}
|
|
|
|
|
|
static struct st_transport _transp;
|
|
|
|
static struct st_slot _slot = {
|
|
.transp = &_transp,
|
|
.slot_nr = 0,
|
|
};
|
|
|
|
struct cardem_inst _ci = {
|
|
.slot = &_slot,
|
|
};
|
|
|
|
struct cardem_inst *ci = &_ci;
|
|
|
|
static void signal_handler(int signal)
|
|
{
|
|
switch (signal) {
|
|
case SIGINT:
|
|
cardem_request_card_insert(ci, false);
|
|
exit(0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** remsim_client **/
|
|
|
|
static int bankd_handle_tpduCardToModem(struct bankd_client *bc, const RsproPDU_t *pdu)
|
|
{
|
|
OSMO_ASSERT(pdu);
|
|
OSMO_ASSERT(RsproPDUchoice_PR_tpduCardToModem == pdu->msg.present);
|
|
|
|
const struct TpduCardToModem *card2modem = &pdu->msg.choice.tpduCardToModem;
|
|
if (card2modem->data.size < 2) { // at least the two SW bytes are needed
|
|
return -1;
|
|
}
|
|
|
|
// save SW to our current APDU context
|
|
ac.sw[0] = card2modem->data.buf[card2modem->data.size - 2];
|
|
ac.sw[1] = card2modem->data.buf[card2modem->data.size - 1];
|
|
printf("SIMtrace <= SW=0x%02x%02x, len_rx=%d\n", ac.sw[0], ac.sw[1], card2modem->data.size - 2);
|
|
if (card2modem->data.size > 2) { // send PB and data to modem
|
|
cardem_request_pb_and_tx(ci, ac.hdr.ins, card2modem->data.buf, card2modem->data.size - 2);
|
|
}
|
|
cardem_request_sw_tx(ci, ac.sw); // send SW to modem
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bankd_handle_setAtrReq(struct bankd_client *bc, const RsproPDU_t *pdu)
|
|
{
|
|
RsproPDU_t *resp;
|
|
int rc;
|
|
|
|
OSMO_ASSERT(pdu);
|
|
OSMO_ASSERT(RsproPDUchoice_PR_setAtrReq == pdu->msg.present);
|
|
|
|
/* FIXME: is this permitted at any time by the SIMtrace2 cardemfirmware? */
|
|
rc = cardem_request_set_atr(ci, pdu->msg.choice.setAtrReq.atr.buf,
|
|
pdu->msg.choice.setAtrReq.atr.size);
|
|
if (rc == 0)
|
|
resp = rspro_gen_SetAtrRes(ResultCode_ok);
|
|
else
|
|
resp = rspro_gen_SetAtrRes(ResultCode_cardTransmissionError);
|
|
if (!resp)
|
|
return -ENOMEM;
|
|
server_conn_send_rspro(&g_client->bankd_conn, resp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* handle incoming message from bankd */
|
|
static int bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU_t *pdu)
|
|
{
|
|
switch (pdu->msg.present) {
|
|
case RsproPDUchoice_PR_connectClientRes:
|
|
/* Store 'identity' of bankd to in peer_comp_id */
|
|
rspro_comp_id_retrieve(&bankdc->peer_comp_id, &pdu->msg.choice.connectClientRes.identity);
|
|
osmo_fsm_inst_dispatch(bankdc->fi, SRVC_E_CLIENT_CONN_RES, (void *) pdu);
|
|
break;
|
|
case RsproPDUchoice_PR_tpduCardToModem: // APDU response from card received
|
|
bankd_handle_tpduCardToModem(g_client, pdu);
|
|
break;
|
|
case RsproPDUchoice_PR_setAtrReq:
|
|
bankd_handle_setAtrReq(g_client, pdu);
|
|
break;
|
|
default:
|
|
LOGPFSML(bankdc->fi, LOGL_ERROR, "Unknown/Unsuppoerted RSPRO PDU %s\n",
|
|
rspro_msgt_name(pdu));
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* handle incoming messages from server */
|
|
static int srvc_handle_rx(struct rspro_server_conn *srvc, const RsproPDU_t *pdu)
|
|
{
|
|
RsproPDU_t *resp;
|
|
|
|
switch (pdu->msg.present) {
|
|
case RsproPDUchoice_PR_connectClientRes:
|
|
/* Store 'identity' of server in srvc->peer_comp_id */
|
|
rspro_comp_id_retrieve(&srvc->peer_comp_id, &pdu->msg.choice.connectClientRes.identity);
|
|
osmo_fsm_inst_dispatch(srvc->fi, SRVC_E_CLIENT_CONN_RES, (void *) pdu);
|
|
break;
|
|
case RsproPDUchoice_PR_configClientIdReq:
|
|
/* store/set the clientID as instructed by the server */
|
|
if (!g_client->srv_conn.clslot)
|
|
g_client->srv_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
|
*g_client->srv_conn.clslot = pdu->msg.choice.configClientIdReq.clientSlot;
|
|
if (!g_client->bankd_conn.clslot)
|
|
g_client->bankd_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
|
*g_client->bankd_conn.clslot = *g_client->srv_conn.clslot;
|
|
/* send response to server */
|
|
resp = rspro_gen_ConfigClientIdRes(ResultCode_ok);
|
|
server_conn_send_rspro(srvc, resp);
|
|
break;
|
|
case RsproPDUchoice_PR_configClientBankReq:
|
|
/* store/set the bankd ip/port as instructed by the server */
|
|
osmo_talloc_replace_string(g_client, &g_client->bankd_conn.server_host,
|
|
rspro_IpAddr2str(&pdu->msg.choice.configClientBankReq.bankd.ip));
|
|
rspro2bank_slot(&g_client->bankd_slot, &pdu->msg.choice.configClientBankReq.bankSlot);
|
|
g_client->bankd_conn.server_port = pdu->msg.choice.configClientBankReq.bankd.port;
|
|
/* instruct bankd FSM to connect */
|
|
osmo_fsm_inst_dispatch(g_client->bankd_conn.fi, SRVC_E_ESTABLISH, NULL);
|
|
/* send response to server */
|
|
resp = rspro_gen_ConfigClientBankRes(ResultCode_ok);
|
|
server_conn_send_rspro(srvc, resp);
|
|
break;
|
|
default:
|
|
LOGPFSML(srvc->fi, LOGL_ERROR, "Unknown/Unsupported RSPRO PDU type: %s\n",
|
|
rspro_msgt_name(pdu));
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void handle_sig_usr1(int signal)
|
|
{
|
|
OSMO_ASSERT(signal == SIGUSR1);
|
|
talloc_report_full(g_tall_ctx, stderr);
|
|
}
|
|
|
|
static void print_welcome(void)
|
|
{
|
|
printf("simtrace2-remsim-client - Remote SIM card client for SIMtrace\n"
|
|
"(C) 2010-2019, Harald Welte <laforge@gnumonks.org>\n"
|
|
"(C) 2018, sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>\n\n");
|
|
}
|
|
|
|
static void print_help(void)
|
|
{
|
|
printf( "\t-s\t--server-host HOST\n"
|
|
"\t-p\t--server-port PORT\n"
|
|
"\t-c\t--client-id <0-65535>\n"
|
|
"\t-n\t--client-slot <0-65535>\n"
|
|
"\t-h\t--help\n"
|
|
"\t-v\t--version\n"
|
|
"\t-i\t--gsmtap-ip\tA.B.C.D\n"
|
|
"\t-k\t--keep-running\n"
|
|
"\t-V\t--usb-vendor\tVENDOR_ID\n"
|
|
"\t-P\t--usb-product\tPRODUCT_ID\n"
|
|
"\t-C\t--usb-config\tCONFIG_ID\n"
|
|
"\t-I\t--usb-interface\tINTERFACE_ID\n"
|
|
"\t-S\t--usb-altsetting ALTSETTING_ID\n"
|
|
"\t-A\t--usb-address\tADDRESS\n"
|
|
"\t-H\t--usb-path\tPATH\n"
|
|
"\t-a\t--atr\tATR\n"
|
|
"\n"
|
|
);
|
|
}
|
|
|
|
static const struct option opts[] = {
|
|
{ "server-host", 1, 0, 's' },
|
|
{ "server-port", 1, 0, 'p' },
|
|
{ "client-id", 1, 0, 'c' },
|
|
{ "client-slot", 1, 0, 'n' },
|
|
{ "help", 0, 0, 'h' },
|
|
{ "version", 0, 0, 'v' },
|
|
{ "gsmtap-ip", 1, 0, 'i' },
|
|
{ "keep-running", 0, 0, 'k' },
|
|
{ "usb-vendor", 1, 0, 'V' },
|
|
{ "usb-product", 1, 0, 'P' },
|
|
{ "usb-config", 1, 0, 'C' },
|
|
{ "usb-interface", 1, 0, 'I' },
|
|
{ "usb-altsetting", 1, 0, 'S' },
|
|
{ "usb-address", 1, 0, 'A' },
|
|
{ "usb-path", 1, 0, 'H' },
|
|
{ "atr", 1, 0, 'a' },
|
|
{ NULL, 0, 0, 0 }
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct rspro_server_conn *srvc, *bankdc;
|
|
struct st_transport *transp = ci->slot->transp;
|
|
char *gsmtap_host = "127.0.0.1";
|
|
int rc;
|
|
int c, ret = 1;
|
|
int keep_running = 0;
|
|
int server_port = 9998;
|
|
int if_num = 0, vendor_id = -1, product_id = -1;
|
|
int config_id = -1, altsetting = 0, addr = -1;
|
|
int client_id = -1, client_slot = -1;
|
|
char *server_host = "127.0.0.1";
|
|
char *path = NULL;
|
|
uint8_t atr_data[33] = { 0x3B, 0x00 }; // the shortest simplest ATR possible
|
|
uint8_t atr_len = 2;
|
|
|
|
print_welcome();
|
|
|
|
while (1) {
|
|
int option_index = 0;
|
|
|
|
c = getopt_long(argc, argv, "s:p:c:n:hvi:kV:P:C:I:S:A:H:a:", opts, &option_index);
|
|
if (c == -1)
|
|
break;
|
|
switch (c) {
|
|
case 's':
|
|
server_host = optarg;
|
|
break;
|
|
case 'p':
|
|
server_port = atoi(optarg);
|
|
break;
|
|
case 'c':
|
|
client_id = atoi(optarg);
|
|
break;
|
|
case 'n':
|
|
client_slot = atoi(optarg);
|
|
break;
|
|
case 'h':
|
|
print_help();
|
|
exit(0);
|
|
break;
|
|
case 'v':
|
|
printf("osmo-remsim-client version %s\n", VERSION);
|
|
exit(0);
|
|
break;
|
|
case 'i':
|
|
gsmtap_host = optarg;
|
|
break;
|
|
case 'k':
|
|
keep_running = 1;
|
|
break;
|
|
case 'V':
|
|
vendor_id = strtol(optarg, NULL, 16);
|
|
break;
|
|
case 'P':
|
|
product_id = strtol(optarg, NULL, 16);
|
|
break;
|
|
case 'C':
|
|
config_id = atoi(optarg);
|
|
break;
|
|
case 'I':
|
|
if_num = atoi(optarg);
|
|
break;
|
|
case 'S':
|
|
altsetting = atoi(optarg);
|
|
break;
|
|
case 'A':
|
|
addr = atoi(optarg);
|
|
break;
|
|
case 'H':
|
|
path = optarg;
|
|
break;
|
|
case 'a':
|
|
rc = osmo_hexparse(optarg, atr_data, ARRAY_SIZE(atr_data));
|
|
if (rc < 2 || rc > ARRAY_SIZE(atr_data)) {
|
|
fprintf(stderr, "ATR matlformed\n");
|
|
goto do_exit;
|
|
}
|
|
atr_len = rc;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (vendor_id < 0 || product_id < 0) {
|
|
fprintf(stderr, "You have to specify the vendor and product ID\n");
|
|
goto do_exit;
|
|
}
|
|
|
|
signal(SIGUSR1, handle_sig_usr1);
|
|
|
|
g_tall_ctx = talloc_named_const(NULL, 0, "global");
|
|
talloc_asn1_ctx = talloc_named_const(g_tall_ctx, 0, "asn1");
|
|
msgb_talloc_ctx_init(g_tall_ctx, 0);
|
|
osmo_init_logging2(g_tall_ctx, &log_info);
|
|
|
|
rc = osmo_libusb_init(NULL);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "libusb initialization failed\n");
|
|
goto do_exit;
|
|
}
|
|
|
|
g_gti = gsmtap_source_init(gsmtap_host, GSMTAP_UDP_PORT, 0);
|
|
if (!g_gti) {
|
|
perror("unable to open GSMTAP");
|
|
goto close_exit;
|
|
}
|
|
gsmtap_source_add_sink(g_gti);
|
|
|
|
signal(SIGINT, &signal_handler);
|
|
|
|
// initialize remote SIM client
|
|
|
|
g_client = talloc_zero(g_tall_ctx, struct bankd_client);
|
|
|
|
if (client_id != -1) {
|
|
/* default to client slot 0 */
|
|
if (client_slot == -1)
|
|
client_slot = 0;
|
|
g_client->srv_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
|
g_client->srv_conn.clslot->clientId = client_id;
|
|
g_client->srv_conn.clslot->slotNr = client_slot;
|
|
g_client->bankd_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
|
*g_client->bankd_conn.clslot = *g_client->srv_conn.clslot;
|
|
}
|
|
|
|
srvc = &g_client->srv_conn;
|
|
srvc->server_host = server_host;
|
|
srvc->server_port = server_port;
|
|
srvc->handle_rx = srvc_handle_rx;
|
|
srvc->own_comp_id.type = ComponentType_remsimClient;
|
|
OSMO_STRLCPY_ARRAY(srvc->own_comp_id.name, "simtrace2-remsim-client");
|
|
OSMO_STRLCPY_ARRAY(srvc->own_comp_id.software, "remsim-client");
|
|
OSMO_STRLCPY_ARRAY(srvc->own_comp_id.sw_version, PACKAGE_VERSION);
|
|
rc = server_conn_fsm_alloc(g_client, srvc);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Unable to create Server conn FSM: %s\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
osmo_fsm_inst_dispatch(srvc->fi, SRVC_E_ESTABLISH, NULL);
|
|
|
|
bankdc = &g_client->bankd_conn;
|
|
/* server_host / server_port are configured from remsim-server */
|
|
bankdc->handle_rx = bankd_handle_rx;
|
|
memcpy(&bankdc->own_comp_id, &srvc->own_comp_id, sizeof(bankdc->own_comp_id));
|
|
rc = server_conn_fsm_alloc(g_client, bankdc);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Unable to create bankd conn FSM: %s\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
osmo_fsm_inst_update_id(bankdc->fi, "bankd");
|
|
|
|
asn_debug = 0;
|
|
|
|
// connect to SIMtrace2 cardem
|
|
do {
|
|
struct usb_interface_match _ifm, *ifm = &_ifm;
|
|
ifm->vendor = vendor_id;
|
|
ifm->product = product_id;
|
|
ifm->configuration = config_id;
|
|
ifm->interface = if_num;
|
|
ifm->altsetting = altsetting;
|
|
ifm->addr = addr;
|
|
if (path)
|
|
osmo_strlcpy(ifm->path, path, sizeof(ifm->path));
|
|
transp->usb_devh = osmo_libusb_open_claim_interface(NULL, NULL, ifm);
|
|
if (!transp->usb_devh) {
|
|
fprintf(stderr, "can't open USB device\n");
|
|
goto close_exit;
|
|
}
|
|
|
|
rc = libusb_claim_interface(transp->usb_devh, if_num);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "can't claim interface %d; rc=%d\n", if_num, rc);
|
|
goto close_exit;
|
|
}
|
|
|
|
rc = osmo_libusb_get_ep_addrs(transp->usb_devh, if_num, &transp->usb_ep.out,
|
|
&transp->usb_ep.in, &transp->usb_ep.irq_in);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "can't obtain EP addrs; rc=%d\n", rc);
|
|
goto close_exit;
|
|
}
|
|
|
|
// switch modem SIM port to emulated SIM on OWHW
|
|
if (USB_VENDOR_OPENMOKO == ifm->vendor && USB_PRODUCT_OWHW_SAM3 == ifm->product) { // we are on the OWHW
|
|
int modem = -1;
|
|
switch (ifm->interface) { // the USB interface indicates for which modem we want to emulate the SIM
|
|
case 0:
|
|
modem = 1;
|
|
break;
|
|
case 1:
|
|
modem = 2;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "unknown GPIO for SIMtrace interface %d\n", ifm->interface);
|
|
goto close_exit;
|
|
}
|
|
//
|
|
char gpio_path[PATH_MAX];
|
|
snprintf(gpio_path, sizeof(gpio_path), "/dev/gpio/connect_st_usim%d/value", modem);
|
|
int connec_st_usim = open(gpio_path, O_WRONLY);
|
|
if (-1 == connec_st_usim) {
|
|
fprintf(stderr, "can't open GPIO %s to switch modem %d to emulated USIM\n", gpio_path, modem);
|
|
goto close_exit;
|
|
}
|
|
if (1 != write(connec_st_usim, "1", 1)) {
|
|
fprintf(stderr, "can't write GPIO %s to switch modem %d to emulated USIM\n", gpio_path, modem);
|
|
goto close_exit;
|
|
}
|
|
printf("switched modem %d to emulated USIM\n", modem);
|
|
|
|
snprintf(gpio_path, sizeof(gpio_path), "/dev/gpio/mdm%d_rst/value", modem);
|
|
int mdm_rst = open(gpio_path, O_WRONLY);
|
|
if (-1 == mdm_rst) {
|
|
fprintf(stderr, "can't open GPIO %s to reset modem %d\n", gpio_path, modem);
|
|
goto close_exit;
|
|
}
|
|
if (1 != write(mdm_rst, "1", 1)) {
|
|
fprintf(stderr, "can't write GPIO %s to reset modem %d\n", gpio_path, modem);
|
|
goto close_exit;
|
|
}
|
|
sleep(1); // wait a bit to ensure reset is effective
|
|
if (1 != write(mdm_rst, "0", 1)) {
|
|
fprintf(stderr, "can't write GPIO %s to reset modem %d\n", gpio_path, modem);
|
|
goto close_exit;
|
|
}
|
|
printf("modem %d reset\n", modem);
|
|
}
|
|
|
|
/* request firmware to generate STATUS on IRQ endpoint */
|
|
cardem_request_config(ci, CEMU_FEAT_F_STATUS_IRQ);
|
|
|
|
/* simulate card-insert to modem (owhw, not qmod) */
|
|
cardem_request_card_insert(ci, true);
|
|
|
|
/* select remote (forwarded) SIM */
|
|
st_modem_sim_select_remote(ci->slot);
|
|
|
|
/* set the ATR */
|
|
//atr_update_csum(real_atr, sizeof(real_atr));
|
|
cardem_request_set_atr(ci, atr_data, atr_len);
|
|
|
|
/* select remote (forwarded) SIM */
|
|
st_modem_reset_pulse(ci->slot, 300);
|
|
|
|
printf("Entering main loop\n");
|
|
|
|
allocate_and_submit_irq(ci);
|
|
allocate_and_submit_in(ci);
|
|
|
|
while (1) {
|
|
osmo_select_main(false);
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
libusb_release_interface(transp->usb_devh, 0);
|
|
close_exit:
|
|
if (transp->usb_devh)
|
|
libusb_close(transp->usb_devh);
|
|
if (keep_running)
|
|
sleep(1);
|
|
} while (keep_running);
|
|
|
|
libusb_exit(NULL);
|
|
do_exit:
|
|
return ret;
|
|
}
|