mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-03-16 21:28:33 +03:00
rename simtrace2-remsim to simtrace2-cardem-pcsc
This renaming is to avoid any confusion with the osmo-remsim project, living in its separate git repository. The simtrace2-cardem-pcsc doesn't feature any 'remote' part. Rather, it emulates the SIM card interface towards the device/phone/modem, and forwards it to a local PC/SC card reader. Change-Id: Ic15f0a89964a72fe3ab7a5145a073720f6207e24
This commit is contained in:
Harald Welte
444
host/src/simtrace2-cardem-pcsc.c
Normal file
444
host/src/simtrace2-cardem-pcsc.c
Normal file
@@ -0,0 +1,444 @@
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/* simtrace2-cardem-pcsc - main program for the host PC to provide a remote SIM
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* using the SIMtrace 2 firmware in card emulation mode
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*
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* (C) 2016-2020 by Harald Welte <hwelte@hmw-consulting.de>
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* (C) 2018, sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 <signal.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 <osmocom/usb/libusb.h>
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#include <osmocom/simtrace2/simtrace2_api.h>
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#include <osmocom/simtrace2/simtrace_prot.h>
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#include <osmocom/simtrace2/apdu_dispatch.h>
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#include <osmocom/simtrace2/gsmtap.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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#define ATR_MAX_LEN 33
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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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/***********************************************************************
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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 osmo_st2_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("=> 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 osmo_st2_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("=> 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 RX-DATA indication message from the SIMtrace2 */
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static int process_do_rx_da(struct osmo_st2_cardem_inst *ci, uint8_t *buf, int len)
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{
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static struct osmo_apdu_context ac;
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struct cardemu_usb_msg_rx_data *data;
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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 = osmo_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 = ci->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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osmo_st2_cardem_request_pb_and_tx(ci, ac.hdr.ins, tmsg->l3h, msgb_l3len(tmsg));
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osmo_st2_cardem_request_sw_tx(ci, ac.sw);
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} else if (ac.lc.tot > ac.lc.cur) {
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osmo_st2_cardem_request_pb_and_rx(ci, 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(struct osmo_st2_cardem_inst *ci, uint8_t *buf, int len)
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{
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struct simtrace_msg_hdr *sh = (struct simtrace_msg_hdr *)buf;
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int rc;
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printf("-> %s\n", osmo_hexdump(buf, len));
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buf += sizeof(*sh);
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switch (sh->msg_type) {
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case SIMTRACE_MSGT_BD_CEMU_STATUS:
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rc = process_do_status(ci, buf, len);
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break;
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case SIMTRACE_MSGT_DO_CEMU_PTS:
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rc = process_do_pts(ci, buf, len);
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break;
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case SIMTRACE_MSGT_DO_CEMU_RX_DATA:
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rc = process_do_rx_da(ci, 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-cardem-pcsc - Using PC/SC reader as SIM\n"
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"(C) 2010-2020, Harald Welte <laforge@gnumonks.org>\n"
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"(C) 2018, sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>\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-h\t--help\n"
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"\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-t\t--set-atr\tATR-STRING in HEX\n"
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"\t-k\t--keep-running\n"
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"\t-n\t--pcsc-reader-num\n"
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"\t-V\t--usb-vendor\tVENDOR_ID\n"
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"\t-P\t--usb-product\tPRODUCT_ID\n"
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"\t-C\t--usb-config\tCONFIG_ID\n"
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"\t-I\t--usb-interface\tINTERFACE_ID\n"
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"\t-S\t--usb-altsetting ALTSETTING_ID\n"
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"\t-A\t--usb-address\tADDRESS\n"
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"\t-H\t--usb-path\tPATH\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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{ "set-atr", 1, 0, 't' },
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{ "help", 0, 0, 'h' },
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{ "keep-running", 0, 0, 'k' },
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{ "pcsc-reader-num", 1, 0, 'n' },
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{ "usb-vendor", 1, 0, 'V' },
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{ "usb-product", 1, 0, 'P' },
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{ "usb-config", 1, 0, 'C' },
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{ "usb-interface", 1, 0, 'I' },
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{ "usb-altsetting", 1, 0, 'S' },
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{ "usb-address", 1, 0, 'A' },
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{ "usb-path", 1, 0, 'H' },
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{ NULL, 0, 0, 0 }
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};
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static void run_mainloop(struct osmo_st2_cardem_inst *ci)
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{
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struct osmo_st2_transport *transp = ci->slot->transp;
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unsigned int msg_count, byte_count = 0;
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uint8_t 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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rc = libusb_bulk_transfer(transp->usb_devh, transp->usb_ep.in,
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buf, sizeof(buf), &xfer_len, 100);
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if (rc < 0 && rc != LIBUSB_ERROR_TIMEOUT &&
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rc != LIBUSB_ERROR_INTERRUPTED &&
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rc != LIBUSB_ERROR_IO) {
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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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/* dispatch any incoming data */
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if (xfer_len > 0) {
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printf("URB: %s\n", osmo_hexdump(buf, xfer_len));
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process_usb_msg(ci, buf, xfer_len);
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msg_count++;
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byte_count += xfer_len;
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}
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}
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}
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static struct osmo_st2_transport _transp;
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static struct osmo_st2_slot _slot = {
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.transp = &_transp,
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.slot_nr = 0,
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};
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struct osmo_st2_cardem_inst _ci = {
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.slot = &_slot,
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};
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struct osmo_st2_cardem_inst *ci = &_ci;
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static void signal_handler(int signal)
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{
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switch (signal) {
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case SIGINT:
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osmo_st2_cardem_request_card_insert(ci, false);
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exit(0);
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break;
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default:
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break;
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}
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}
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int main(int argc, char **argv)
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{
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struct osmo_st2_transport *transp = ci->slot->transp;
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char *gsmtap_host = "127.0.0.1";
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||||
int rc;
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int c, ret = 1;
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int skip_atr = 0;
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||||
char *atr = "3b00";
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uint8_t real_atr[ATR_MAX_LEN];
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int atr_len;
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int keep_running = 0;
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||||
int if_num = 0, vendor_id = -1, product_id = -1;
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||||
int config_id = -1, altsetting = 0, addr = -1;
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||||
int reader_num = 0;
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||||
char *path = NULL;
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||||
struct osim_reader_hdl *reader;
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||||
struct osim_card_hdl *card;
|
||||
|
||||
print_welcome();
|
||||
|
||||
while (1) {
|
||||
int option_index = 0;
|
||||
|
||||
c = getopt_long(argc, argv, "hi:V:P:C:I:S:A:H:akn:t:", opts, &option_index);
|
||||
if (c == -1)
|
||||
break;
|
||||
switch (c) {
|
||||
case 'h':
|
||||
print_help();
|
||||
exit(0);
|
||||
break;
|
||||
case 'i':
|
||||
gsmtap_host = optarg;
|
||||
break;
|
||||
case 'a':
|
||||
skip_atr = 1;
|
||||
break;
|
||||
case 't':
|
||||
atr = optarg;
|
||||
break;
|
||||
case 'k':
|
||||
keep_running = 1;
|
||||
break;
|
||||
case 'n':
|
||||
reader_num = atoi(optarg);
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
atr_len = osmo_hexparse(atr,real_atr,ATR_MAX_LEN);
|
||||
if (atr_len < 2) {
|
||||
fprintf(stderr, "Invalid ATR - please omit a leading 0x and only use valid hex "
|
||||
"digits and whitespace. ATRs need to be between 2 and 33 bytes long.\n");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
if (vendor_id < 0 || product_id < 0) {
|
||||
fprintf(stderr, "You have to specify the vendor and product ID\n");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
ci->card_prof = &osim_uicc_sim_cic_profile;
|
||||
|
||||
rc = libusb_init(NULL);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "libusb initialization failed\n");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
rc = osmo_st2_gsmtap_init(gsmtap_host);
|
||||
if (rc < 0) {
|
||||
perror("unable to open GSMTAP");
|
||||
goto close_exit;
|
||||
}
|
||||
|
||||
reader = osim_reader_open(OSIM_READER_DRV_PCSC, reader_num, "", 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;
|
||||
}
|
||||
|
||||
ci->chan = llist_entry(card->channels.next, struct osim_chan_hdl, list);
|
||||
if (!ci->chan) {
|
||||
perror("SIM card has no channel?!?");
|
||||
goto close_exit;
|
||||
}
|
||||
|
||||
signal(SIGINT, &signal_handler);
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
/* simulate card-insert to modem (owhw, not qmod) */
|
||||
osmo_st2_cardem_request_card_insert(ci, true);
|
||||
|
||||
/* select remote (forwarded) SIM */
|
||||
osmo_st2_modem_sim_select_remote(ci->slot);
|
||||
|
||||
if (!skip_atr) {
|
||||
/* set the ATR */
|
||||
atr_update_csum(real_atr, atr_len);
|
||||
osmo_st2_cardem_request_set_atr(ci, real_atr, atr_len);
|
||||
}
|
||||
|
||||
/* select remote (forwarded) SIM */
|
||||
osmo_st2_modem_reset_pulse(ci->slot, 300);
|
||||
|
||||
run_mainloop(ci);
|
||||
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;
|
||||
}
|
||||
Reference in New Issue
Block a user