2016-03-19 12:39:33 +00:00
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/* simtrace2-remsim - main program for the host PC
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*
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* (C) 2010-2016 by Harald Welte <hwelte@hmw-consulting.de>
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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 version 2
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* as published by the Free Software Foundation
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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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <time.h>
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#define _GNU_SOURCE
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#include <getopt.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <libusb.h>
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#include "simtrace.h"
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#include "cardemu_prot.h"
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#include "apdu_dispatch.h"
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2016-03-19 20:28:09 +00:00
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#include "simtrace2-discovery.h"
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2016-03-19 12:39:33 +00:00
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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/sim/class_tables.h>
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#include <osmocom/sim/sim.h>
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static struct gsmtap_inst *g_gti;
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struct libusb_device_handle *g_devh;
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const struct osim_cla_ins_card_profile *g_prof;
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2016-03-19 20:28:09 +00:00
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static uint8_t g_in_ep;
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static uint8_t g_out_ep;
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2016-03-19 12:39:33 +00:00
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static int g_udp_fd = -1;
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static struct osim_chan_hdl *g_chan;
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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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#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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/*! \brief Transmit a given command to the SIMtrace2 device */
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static int tx_to_dev(uint8_t *buf, unsigned int len)
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{
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struct cardemu_usb_msg_hdr *mh = (struct cardemu_usb_msg_hdr *) buf;
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int xfer_len;
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mh->msg_len = len;
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printf("<- %s\n", osmo_hexdump(buf, len));
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if (g_udp_fd < 0) {
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2016-03-19 20:28:09 +00:00
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return libusb_bulk_transfer(g_devh, g_out_ep, buf, len,
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2016-03-19 12:39:33 +00:00
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&xfer_len, 100000);
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} else {
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return write(g_udp_fd, buf, len);
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}
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}
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/*! \brief Request the SIMtrace2 to generate a card-insert signal */
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static int request_card_insert(bool inserted)
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{
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struct cardemu_usb_msg_cardinsert cins;
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memset(&cins, 0, sizeof(cins));
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cins.hdr.msg_type = CEMU_USB_MSGT_DT_CARDINSERT;
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if (inserted)
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cins.card_insert = 1;
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return tx_to_dev((uint8_t *)&cins, sizeof(cins));
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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 request_pb_and_rx(uint8_t pb, uint8_t le)
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{
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struct cardemu_usb_msg_tx_data *txd;
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uint8_t buf[sizeof(*txd) + 1];
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txd = (struct cardemu_usb_msg_tx_data *) buf;
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printf("<= request_pb_and_rx(%02x, %d)\n", pb, le);
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memset(txd, 0, sizeof(*txd));
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txd->data_len = 1;
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txd->hdr.msg_type = CEMU_USB_MSGT_DT_TX_DATA;
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txd->flags = CEMU_DATA_F_PB_AND_RX;
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txd->data[0] = pb;
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return tx_to_dev((uint8_t *)txd, sizeof(*txd)+txd->data_len);
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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 request_pb_and_tx(uint8_t pb, const uint8_t *data, uint8_t data_len_in)
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{
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uint32_t data_len = data_len_in;
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struct cardemu_usb_msg_tx_data *txd;
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uint8_t buf[sizeof(*txd) + 1 + data_len_in];
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txd = (struct cardemu_usb_msg_tx_data *) buf;
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printf("<= request_pb_and_tx(%02x, %s, %d)\n", pb, osmo_hexdump(data, data_len_in), data_len_in);
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memset(txd, 0, sizeof(*txd));
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txd->hdr.msg_type = CEMU_USB_MSGT_DT_TX_DATA;
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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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txd->data[0] = pb;
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memcpy(txd->data+1, data, data_len_in);
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return tx_to_dev(buf, sizeof(*txd)+txd->data_len);
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}
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/*! \brief Request the SIMtrace2 to send a Status Word */
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static int request_sw_tx(const uint8_t *sw)
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{
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struct cardemu_usb_msg_tx_data *txd;
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uint8_t buf[sizeof(*txd) + 2];
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txd = (struct cardemu_usb_msg_tx_data *) buf;
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printf("<= request_sw_tx(%02x %02x)\n", sw[0], sw[1]);
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memset(txd, 0, sizeof(*txd));
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txd->hdr.msg_type = CEMU_USB_MSGT_DT_TX_DATA;
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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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txd->data[0] = sw[0];
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txd->data[1] = sw[1];
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return tx_to_dev((uint8_t *)txd, sizeof(*txd)+txd->data_len);
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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(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("=> 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(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("=> 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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static int process_do_error(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("=> ERROR: %u/%u/%u: %s\n",
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err->severity, err->subsystem, err->code,
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err->msg_len ? err->msg : "");
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return 0;
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}
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/*! \brief Process a RX-DATA indication message from the SIMtrace2 */
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static int process_do_rx_da(uint8_t *buf, int len)
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{
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static struct apdu_context ac;
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struct cardemu_usb_msg_rx_data *data;
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const uint8_t sw_success[] = { 0x90, 0x00 };
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int rc;
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data = (struct cardemu_usb_msg_rx_data *) buf;
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printf("=> DATA: flags=%x, %s: ", data->flags,
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osmo_hexdump(data->data, data->data_len));
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rc = apdu_segment_in(&ac, data->data, data->data_len,
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data->flags & CEMU_DATA_F_TPDU_HDR);
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if (rc & APDU_ACT_TX_CAPDU_TO_CARD) {
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struct msgb *tmsg = msgb_alloc(1024, "TPDU");
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struct osim_reader_hdl *rh = g_chan->card->reader;
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uint8_t *cur;
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/* Copy TPDU header */
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cur = msgb_put(tmsg, sizeof(ac.hdr));
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memcpy(cur, &ac.hdr, sizeof(ac.hdr));
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/* Copy D(c), if any */
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if (ac.lc.tot) {
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cur = msgb_put(tmsg, ac.lc.tot);
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memcpy(cur, ac.dc, ac.lc.tot);
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}
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/* send to actual card */
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tmsg->l3h = tmsg->tail;
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rc = rh->ops->transceive(rh, tmsg);
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if (rc < 0) {
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fprintf(stderr, "error during transceive: %d\n", rc);
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msgb_free(tmsg);
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return rc;
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}
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msgb_apdu_sw(tmsg) = msgb_get_u16(tmsg);
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ac.sw[0] = msgb_apdu_sw(tmsg) >> 8;
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ac.sw[1] = msgb_apdu_sw(tmsg) & 0xff;
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printf("SW=0x%04x, len_rx=%d\n", msgb_apdu_sw(tmsg), msgb_l3len(tmsg));
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if (msgb_l3len(tmsg))
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request_pb_and_tx(ac.hdr.ins, tmsg->l3h, msgb_l3len(tmsg));
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request_sw_tx(ac.sw);
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} else if (ac.lc.tot > ac.lc.cur) {
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request_pb_and_rx(ac.hdr.ins, ac.lc.tot - ac.lc.cur);
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}
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return 0;
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}
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/*! \brief Process an incoming message from the SIMtrace2 */
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static int process_usb_msg(uint8_t *buf, int len)
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{
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struct cardemu_usb_msg_hdr *sh = (struct cardemu_usb_msg_hdr *)buf;
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uint8_t *payload;
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int payload_len;
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int rc;
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printf("-> %s\n", osmo_hexdump(buf, len));
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switch (sh->msg_type) {
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case CEMU_USB_MSGT_DO_STATUS:
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rc = process_do_status(buf, len);
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break;
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case CEMU_USB_MSGT_DO_PTS:
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rc = process_do_pts(buf, len);
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break;
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case CEMU_USB_MSGT_DO_ERROR:
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rc = process_do_error(buf, len);
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break;
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case CEMU_USB_MSGT_DO_RX_DATA:
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rc = process_do_rx_da(buf, len);
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break;
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default:
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printf("unknown simtrace msg type 0x%02x\n", sh->msg_type);
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rc = -1;
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break;
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}
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return rc;
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}
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static void print_welcome(void)
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{
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printf("simtrace2-remsim - Remote SIM card forwarding\n"
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"(C) 2010-2016 by Harald Welte <laforge@gnumonks.org>\n\n");
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}
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static void print_help(void)
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{
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printf( "\t-i\t--gsmtap-ip\tA.B.C.D\n"
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"\t-a\t--skip-atr\n"
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"\t-h\t--help\n"
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"\t-k\t--keep-running\n"
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"\n"
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);
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}
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static const struct option opts[] = {
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{ "gsmtap-ip", 1, 0, 'i' },
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{ "skip-atr", 0, 0, 'a' },
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{ "help", 0, 0, 'h' },
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{ "keep-running", 0, 0, 'k' },
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{ NULL, 0, 0, 0 }
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};
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static void run_mainloop(void)
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{
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unsigned int msg_count, byte_count = 0;
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char buf[16*265];
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int xfer_len;
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int rc;
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printf("Entering main loop\n");
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while (1) {
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/* read data from SIMtrace2 device (local or via USB) */
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if (g_udp_fd < 0) {
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2016-03-19 20:28:09 +00:00
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rc = libusb_bulk_transfer(g_devh, g_in_ep, buf, sizeof(buf), &xfer_len, 100000);
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2016-03-19 12:39:33 +00:00
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if (rc < 0 && rc != LIBUSB_ERROR_TIMEOUT) {
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fprintf(stderr, "BULK IN transfer error; rc=%d\n", rc);
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return;
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}
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} else {
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rc = read(g_udp_fd, buf, sizeof(buf));
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if (rc <= 0) {
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|
fprintf(stderr, "shor read from UDP\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
xfer_len = rc;
|
|
|
|
}
|
|
|
|
/* dispatch any incoming data */
|
|
|
|
if (xfer_len > 0) {
|
|
|
|
//printf("URB: %s\n", osmo_hexdump(buf, rc));
|
|
|
|
process_usb_msg(buf, xfer_len);
|
|
|
|
msg_count++;
|
|
|
|
byte_count += xfer_len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
|
|
{
|
|
|
|
char *gsmtap_host = "127.0.0.1";
|
|
|
|
int rc;
|
|
|
|
int c, ret = 1;
|
|
|
|
int skip_atr = 0;
|
|
|
|
int keep_running = 0;
|
|
|
|
int remote_udp_port = 52342;
|
2016-03-19 20:28:09 +00:00
|
|
|
int if_num = 0;
|
2016-03-19 12:39:33 +00:00
|
|
|
char *remote_udp_host = NULL;
|
|
|
|
struct osim_reader_hdl *reader;
|
|
|
|
struct osim_card_hdl *card;
|
|
|
|
|
|
|
|
print_welcome();
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
int option_index = 0;
|
|
|
|
|
2016-03-19 20:28:09 +00:00
|
|
|
c = getopt_long(argc, argv, "r:p:hi:I:ak", opts, &option_index);
|
2016-03-19 12:39:33 +00:00
|
|
|
if (c == -1)
|
|
|
|
break;
|
|
|
|
switch (c) {
|
|
|
|
case 'r':
|
|
|
|
remote_udp_host = optarg;
|
|
|
|
break;
|
|
|
|
case 'p':
|
|
|
|
remote_udp_port = atoi(optarg);
|
|
|
|
break;
|
|
|
|
case 'h':
|
|
|
|
print_help();
|
|
|
|
exit(0);
|
|
|
|
break;
|
|
|
|
case 'i':
|
|
|
|
gsmtap_host = optarg;
|
|
|
|
break;
|
2016-03-19 20:28:09 +00:00
|
|
|
case 'I':
|
|
|
|
if_num = atoi(optarg);
|
|
|
|
break;
|
2016-03-19 12:39:33 +00:00
|
|
|
case 'a':
|
|
|
|
skip_atr = 1;
|
|
|
|
break;
|
|
|
|
case 'k':
|
|
|
|
keep_running = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
g_prof = &osim_uicc_sim_cic_profile;
|
|
|
|
|
|
|
|
if (!remote_udp_host) {
|
|
|
|
rc = libusb_init(NULL);
|
|
|
|
if (rc < 0) {
|
|
|
|
fprintf(stderr, "libusb initialization failed\n");
|
|
|
|
goto do_exit;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
g_udp_fd = osmo_sock_init(AF_INET, SOCK_DGRAM, IPPROTO_UDP, remote_udp_host,
|
2016-03-19 20:28:09 +00:00
|
|
|
remote_udp_port+if_num, OSMO_SOCK_F_CONNECT);
|
2016-03-19 12:39:33 +00:00
|
|
|
if (g_udp_fd < 0) {
|
|
|
|
fprintf(stderr, "error binding UDP port\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);
|
|
|
|
|
|
|
|
reader = osim_reader_open(OSIM_READER_DRV_PCSC, 0, "", NULL);
|
|
|
|
if (!reader) {
|
|
|
|
perror("unable to open PC/SC reader");
|
|
|
|
goto close_exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
card = osim_card_open(reader, OSIM_PROTO_T0);
|
|
|
|
if (!card) {
|
|
|
|
perror("unable to open SIM card");
|
|
|
|
goto close_exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
g_chan = llist_entry(card->channels.next, struct osim_chan_hdl, list);
|
|
|
|
if (!g_chan) {
|
|
|
|
perror("SIM card has no channel?!?");
|
|
|
|
goto close_exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
do {
|
|
|
|
if (g_udp_fd < 0) {
|
|
|
|
g_devh = libusb_open_device_with_vid_pid(NULL, SIMTRACE_USB_VENDOR, SIMTRACE_USB_PRODUCT);
|
|
|
|
if (!g_devh) {
|
|
|
|
fprintf(stderr, "can't open USB device\n");
|
|
|
|
goto close_exit;
|
|
|
|
}
|
|
|
|
|
2016-03-19 20:28:09 +00:00
|
|
|
rc = libusb_claim_interface(g_devh, if_num);
|
|
|
|
if (rc < 0) {
|
|
|
|
fprintf(stderr, "can't claim interface %d; rc=%d\n", if_num, rc);
|
|
|
|
goto close_exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = get_usb_ep_addrs(g_devh, if_num, &g_out_ep, &g_in_ep, NULL);
|
2016-03-19 12:39:33 +00:00
|
|
|
if (rc < 0) {
|
2016-03-19 20:28:09 +00:00
|
|
|
fprintf(stderr, "can't obtain EP addrs; rc=%d\n", rc);
|
2016-03-19 12:39:33 +00:00
|
|
|
goto close_exit;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
request_card_insert(true);
|
|
|
|
|
|
|
|
run_mainloop();
|
|
|
|
ret = 0;
|
|
|
|
|
|
|
|
if (g_udp_fd < 0)
|
|
|
|
libusb_release_interface(g_devh, 0);
|
|
|
|
close_exit:
|
|
|
|
if (g_devh)
|
|
|
|
libusb_close(g_devh);
|
|
|
|
if (keep_running)
|
|
|
|
sleep(1);
|
|
|
|
} while (keep_running);
|
|
|
|
|
|
|
|
release_exit:
|
|
|
|
if (g_udp_fd < 0)
|
|
|
|
libusb_exit(NULL);
|
|
|
|
do_exit:
|
|
|
|
return ret;
|
|
|
|
}
|