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osmo-remsim/src/simtrace2-remsim_client.c

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/* (C) 2018-2019 by Harald Welte <laforge@gnumonks.org>
* (C) 2018 by sysmocom - s.f.m.c. GmbH, Author: Kevin Redon
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <errno.h>
#include <string.h>
#include <talloc.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/fsm.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/abis/ipa.h>
#include <osmocom/gsm/protocol/ipaccess.h>
#include "rspro_util.h"
#include "client.h"
#include "debug.h"
#include <unistd.h>
#include <stdio.h>
#include <linux/limits.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <getopt.h>
#include <libusb.h>
#include "simtrace2/libusb_util.h"
#include "simtrace2/simtrace_prot.h"
#include "simtrace2/simtrace_usb.h"
#include "simtrace2/apdu_dispatch.h"
#include "simtrace2/simtrace2-discovery.h"
#include <osmocom/core/gsmtap.h>
#include <osmocom/core/gsmtap_util.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/msgb.h>
#include <osmocom/sim/class_tables.h>
#include <osmocom/sim/sim.h>
/* transport to a SIMtrace device */
struct st_transport {
/* USB */
struct libusb_device_handle *usb_devh;
struct {
uint8_t in;
uint8_t out;
uint8_t irq_in;
} usb_ep;
};
/* a SIMtrace slot; communicates over a transport */
struct st_slot {
/* transport through which the slot can be reached */
struct st_transport *transp;
/* number of the slot within the transport */
uint8_t slot_nr;
};
/* One istance of card emulation */
struct cardem_inst {
/* slot on which this card emulation instance runs */
struct st_slot *slot;
};
/* global GSMTAP instance */
static struct gsmtap_inst *g_gti;
static struct bankd_client *g_client;
static void *g_tall_ctx;
void __thread *talloc_asn1_ctx;
int asn_debug;
static int gsmtap_send_sim(const uint8_t *apdu, unsigned int len)
{
struct gsmtap_hdr *gh;
unsigned int gross_len = len + sizeof(*gh);
uint8_t *buf = malloc(gross_len);
int rc;
if (!buf)
return -ENOMEM;
memset(buf, 0, sizeof(*gh));
gh = (struct gsmtap_hdr *) buf;
gh->version = GSMTAP_VERSION;
gh->hdr_len = sizeof(*gh)/4;
gh->type = GSMTAP_TYPE_SIM;
memcpy(buf + sizeof(*gh), apdu, len);
rc = write(gsmtap_inst_fd(g_gti), buf, gross_len);
if (rc < 0) {
perror("write gsmtap");
free(buf);
return rc;
}
free(buf);
return 0;
}
/***********************************************************************
* SIMTRACE pcore protocol
***********************************************************************/
/*! \brief allocate a message buffer for simtrace use */
static struct msgb *st_msgb_alloc(void)
{
return msgb_alloc_headroom(1024+32, 32, "SIMtrace");
}
#if 0
static void apdu_out_cb(uint8_t *buf, unsigned int len, void *user_data)
{
printf("APDU: %s\n", osmo_hexdump(buf, len));
gsmtap_send_sim(buf, len);
}
#endif
/*! \brief Transmit a given command to the SIMtrace2 device */
int st_transp_tx_msg(struct st_transport *transp, struct msgb *msg)
{
int rc;
printf("SIMtrace <- %s\n", msgb_hexdump(msg));
int xfer_len;
rc = libusb_bulk_transfer(transp->usb_devh, transp->usb_ep.out,
msgb_data(msg), msgb_length(msg),
&xfer_len, 100000);
msgb_free(msg);
return rc;
}
static struct simtrace_msg_hdr *st_push_hdr(struct msgb *msg, uint8_t msg_class, uint8_t msg_type,
uint8_t slot_nr)
{
struct simtrace_msg_hdr *sh;
sh = (struct simtrace_msg_hdr *) msgb_push(msg, sizeof(*sh));
memset(sh, 0, sizeof(*sh));
sh->msg_class = msg_class;
sh->msg_type = msg_type;
sh->slot_nr = slot_nr;
sh->msg_len = msgb_length(msg);
return sh;
}
/* transmit a given message to a specified slot. Expects all headers
* present before calling the function */
int st_slot_tx_msg(struct st_slot *slot, struct msgb *msg,
uint8_t msg_class, uint8_t msg_type)
{
st_push_hdr(msg, msg_class, msg_type, slot->slot_nr);
return st_transp_tx_msg(slot->transp, msg);
}
/***********************************************************************
* Card Emulation protocol
***********************************************************************/
/*! \brief Request the SIMtrace2 to generate a card-insert signal */
static int cardem_request_card_insert(struct cardem_inst *ci, bool inserted)
{
struct msgb *msg = st_msgb_alloc();
struct cardemu_usb_msg_cardinsert *cins;
cins = (struct cardemu_usb_msg_cardinsert *) msgb_put(msg, sizeof(*cins));
memset(cins, 0, sizeof(*cins));
if (inserted)
cins->card_insert = 1;
return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_CARDINSERT);
}
/*! \brief Request the SIMtrace2 to transmit a Procedure Byte, then Rx */
static int cardem_request_pb_and_rx(struct cardem_inst *ci, uint8_t pb, uint8_t le)
{
struct msgb *msg = st_msgb_alloc();
struct cardemu_usb_msg_tx_data *txd;
txd = (struct cardemu_usb_msg_tx_data *) msgb_put(msg, sizeof(*txd));
printf("SIMtrace <= %s(%02x, %d)\n", __func__, pb, le);
memset(txd, 0, sizeof(*txd));
txd->data_len = 1;
txd->flags = CEMU_DATA_F_PB_AND_RX;
/* one data byte */
msgb_put_u8(msg, pb);
return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_TX_DATA);
}
/*! \brief Request the SIMtrace2 to transmit a Procedure Byte, then Tx */
static int cardem_request_pb_and_tx(struct cardem_inst *ci, uint8_t pb,
const uint8_t *data, uint16_t data_len_in)
{
struct msgb *msg = st_msgb_alloc();
struct cardemu_usb_msg_tx_data *txd;
uint8_t *cur;
txd = (struct cardemu_usb_msg_tx_data *) msgb_put(msg, sizeof(*txd));
printf("SIMtrace <= %s(%02x, %s, %d)\n", __func__, pb,
osmo_hexdump(data, data_len_in), data_len_in);
memset(txd, 0, sizeof(*txd));
txd->data_len = 1 + data_len_in;
txd->flags = CEMU_DATA_F_PB_AND_TX;
/* procedure byte */
msgb_put_u8(msg, pb);
/* data */
cur = msgb_put(msg, data_len_in);
memcpy(cur, data, data_len_in);
return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_TX_DATA);
}
/*! \brief Request the SIMtrace2 to send a Status Word */
static int cardem_request_sw_tx(struct cardem_inst *ci, const uint8_t *sw)
{
struct msgb *msg = st_msgb_alloc();
struct cardemu_usb_msg_tx_data *txd;
uint8_t *cur;
txd = (struct cardemu_usb_msg_tx_data *) msgb_put(msg, sizeof(*txd));
printf("SIMtrace <= %s(%02x %02x)\n", __func__, sw[0], sw[1]);
memset(txd, 0, sizeof(*txd));
txd->data_len = 2;
txd->flags = CEMU_DATA_F_PB_AND_TX | CEMU_DATA_F_FINAL;
cur = msgb_put(msg, 2);
cur[0] = sw[0];
cur[1] = sw[1];
return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_TX_DATA);
}
// FIXME check if the ATR actually includes a checksum
static void atr_update_csum(uint8_t *atr, unsigned int atr_len)
{
uint8_t csum = 0;
int i;
for (i = 1; i < atr_len - 1; i++)
csum = csum ^ atr[i];
atr[atr_len-1] = csum;
}
static int cardem_request_set_atr(struct cardem_inst *ci, const uint8_t *atr, unsigned int atr_len)
{
struct msgb *msg = st_msgb_alloc();
struct cardemu_usb_msg_set_atr *satr;
uint8_t *cur;
satr = (struct cardemu_usb_msg_set_atr *) msgb_put(msg, sizeof(*satr));
printf("SIMtrace <= %s(%s)\n", __func__, osmo_hexdump(atr, atr_len));
memset(satr, 0, sizeof(*satr));
satr->atr_len = atr_len;
cur = msgb_put(msg, atr_len);
memcpy(cur, atr, atr_len);
return st_slot_tx_msg(ci->slot, msg, SIMTRACE_MSGC_CARDEM, SIMTRACE_MSGT_DT_CEMU_SET_ATR);
}
/***********************************************************************
* Modem Control protocol
***********************************************************************/
static int _modem_reset(struct st_slot *slot, uint8_t asserted, uint16_t pulse_ms)
{
struct msgb *msg = st_msgb_alloc();
struct st_modem_reset *sr ;
sr = (struct st_modem_reset *) msgb_put(msg, sizeof(*sr));
sr->asserted = asserted;
sr->pulse_duration_msec = pulse_ms;
return st_slot_tx_msg(slot, msg, SIMTRACE_MSGC_MODEM, SIMTRACE_MSGT_DT_MODEM_RESET);
}
/*! \brief pulse the RESET line of the modem for \a duration_ms milli-seconds*/
int st_modem_reset_pulse(struct st_slot *slot, uint16_t duration_ms)
{
return _modem_reset(slot, 2, duration_ms);
}
/*! \brief assert the RESET line of the modem */
int st_modem_reset_active(struct st_slot *slot)
{
return _modem_reset(slot, 1, 0);
}
/*! \brief de-assert the RESET line of the modem */
int st_modem_reset_inactive(struct st_slot *slot)
{
return _modem_reset(slot, 0, 0);
}
static int _modem_sim_select(struct st_slot *slot, uint8_t remote_sim)
{
struct msgb *msg = st_msgb_alloc();
struct st_modem_sim_select *ss;
ss = (struct st_modem_sim_select *) msgb_put(msg, sizeof(*ss));
ss->remote_sim = remote_sim;
return st_slot_tx_msg(slot, msg, SIMTRACE_MSGC_MODEM, SIMTRACE_MSGT_DT_MODEM_SIM_SELECT);
}
/*! \brief select local (physical) SIM for given slot */
int st_modem_sim_select_local(struct st_slot *slot)
{
return _modem_sim_select(slot, 0);
}
/*! \brief select remote (emulated/forwarded) SIM for given slot */
int st_modem_sim_select_remote(struct st_slot *slot)
{
return _modem_sim_select(slot, 1);
}
/*! \brief Request slot to send us status information about the modem */
int st_modem_get_status(struct st_slot *slot)
{
struct msgb *msg = st_msgb_alloc();
return st_slot_tx_msg(slot, msg, SIMTRACE_MSGC_MODEM, SIMTRACE_MSGT_BD_MODEM_STATUS);
}
/***********************************************************************
* Incoming Messages
***********************************************************************/
/*! \brief Process a STATUS message from the SIMtrace2 */
static int process_do_status(struct cardem_inst *ci, uint8_t *buf, int len)
{
struct cardemu_usb_msg_status *status;
status = (struct cardemu_usb_msg_status *) buf;
printf("SIMtrace => STATUS: flags=0x%x, fi=%u, di=%u, wi=%u wtime=%u\n",
status->flags, status->fi, status->di, status->wi,
status->waiting_time);
return 0;
}
/*! \brief Process a PTS indication message from the SIMtrace2 */
static int process_do_pts(struct cardem_inst *ci, uint8_t *buf, int len)
{
struct cardemu_usb_msg_pts_info *pts;
pts = (struct cardemu_usb_msg_pts_info *) buf;
printf("SIMtrace => PTS req: %s\n", osmo_hexdump(pts->req, sizeof(pts->req)));
return 0;
}
/*! \brief Process a ERROR indication message from the SIMtrace2 */
static int process_do_error(struct cardem_inst *ci, uint8_t *buf, int len)
{
struct cardemu_usb_msg_error *err;
err = (struct cardemu_usb_msg_error *) buf;
printf("SIMtrace => ERROR: %u/%u/%u: %s\n",
err->severity, err->subsystem, err->code,
err->msg_len ? (char *)err->msg : "");
return 0;
}
static struct apdu_context ac; // this will hold the complete APDU (across calls)
/*! \brief Process a RX-DATA indication message from the SIMtrace2 */
static int process_do_rx_da(struct cardem_inst *ci, uint8_t *buf, int len)
{
struct cardemu_usb_msg_rx_data *data = (struct cardemu_usb_msg_rx_data *) buf; // cast the data from the USB message
int rc;
printf("SIMtrace => DATA: flags=%x, %s: ", data->flags,
osmo_hexdump(data->data, data->data_len));
rc = apdu_segment_in(&ac, data->data, data->data_len,
data->flags & CEMU_DATA_F_TPDU_HDR); // parse the APDU data in the USB message
if (rc & APDU_ACT_TX_CAPDU_TO_CARD) { // there is no pending data coming from the modem
uint8_t* apdu_command = calloc(1, sizeof(ac.hdr) + ac.lc.tot); // to store the APDU command to send
memcpy(apdu_command, &ac.hdr, sizeof(ac.hdr)); // copy APDU command header
if (ac.lc.tot) {
memcpy(apdu_command + sizeof(ac.hdr), ac.dc, ac.lc.tot); // copy APDU command data
}
// send APDU to card
RsproPDU_t *pdu = rspro_gen_TpduModem2Card(g_client->srv_conn.clslot, &(BankSlot_t){ .bankId = 0, .slotNr = 0}, apdu_command, sizeof(ac.hdr) + ac.lc.tot); // create RSPRO packet
ipa_client_conn_send_rspro(g_client->bankd_conn, pdu); // send RSPRO packet
// the response will come separately
free(apdu_command);
} 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;
default:
printf("unknown simtrace msg type 0x%02x\n", sh->msg_type);
rc = -1;
break;
}
return rc;
}
static void run_mainloop(struct cardem_inst *ci)
{
struct st_transport *transp = ci->slot->transp;
unsigned int msg_count, byte_count = 0;
uint8_t buf[16*265];
int xfer_len;
int rc;
printf("Entering main loop\n");
while (1) {
/* read data from SIMtrace2 device (local or via USB) */
rc = libusb_bulk_transfer(transp->usb_devh, transp->usb_ep.in,
buf, sizeof(buf), &xfer_len, 100);
if (rc < 0 && rc != LIBUSB_ERROR_TIMEOUT &&
rc != LIBUSB_ERROR_INTERRUPTED &&
rc != LIBUSB_ERROR_IO) {
fprintf(stderr, "BULK IN transfer error: %s\n", libusb_error_name(rc));
return;
}
/* dispatch any incoming data */
if (xfer_len > 0) {
process_usb_msg(ci, buf, xfer_len);
msg_count++;
byte_count += xfer_len;
}
// handle remote SIM client fsm
// TODO register the USB fd for this select
osmo_select_main(true);
}
}
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, 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_msg(struct bankd_client *bc, struct msgb *msg)
{
RsproPDU_t *pdu = rspro_dec_msg(msg);
if (!pdu) {
fprintf(stderr, "Error decoding PDU\n");
return -1;
}
switch (pdu->msg.present) {
case RsproPDUchoice_PR_connectClientRes:
/* Store 'identity' of bankd to in peer_comp_id */
rspro_comp_id_retrieve(&bc->peer_comp_id, &pdu->msg.choice.connectClientRes.identity);
osmo_fsm_inst_dispatch(bc->bankd_fi, BDC_E_CLIENT_CONN_RES, pdu);
break;
case RsproPDUchoice_PR_tpduCardToModem: // APDU response from card received
bankd_handle_tpduCardToModem(bc, pdu);
break;
default:
fprintf(stderr, "Unknown/Unsuppoerted RSPRO PDU: %s\n", msgb_hexdump(msg));
return -1;
}
return 0;
}
int bankd_read_cb(struct ipa_client_conn *conn, struct msgb *msg)
{
struct ipaccess_head *hh = (struct ipaccess_head *) msg->data;
struct ipaccess_head_ext *he = (struct ipaccess_head_ext *) msgb_l2(msg);
struct bankd_client *bc = conn->data;
int rc;
if (msgb_length(msg) < sizeof(*hh))
goto invalid;
msg->l2h = &hh->data[0];
if (hh->proto != IPAC_PROTO_OSMO)
goto invalid;
if (!he || msgb_l2len(msg) < sizeof(*he))
goto invalid;
msg->l2h = &he->data[0];
if (he->proto != IPAC_PROTO_EXT_RSPRO)
goto invalid;
printf("Received RSPRO %s\n", msgb_hexdump(msg));
rc = bankd_handle_msg(bc, msg);
return rc;
invalid:
msgb_free(msg);
return -1;
}
/* 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_configClientReq:
/* 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.configClientReq.clientSlot;
/* store/set the bankd ip/port as instructed by the server */
osmo_talloc_replace_string(g_client, &g_client->bankd_host,
rspro_IpAddr2str(&pdu->msg.choice.configClientReq.bankd.ip));
g_client->bankd_port = ntohs(pdu->msg.choice.configClientReq.bankd.port);
/* instruct bankd FSM to connect */
osmo_fsm_inst_dispatch(g_client->bankd_fi, BDC_E_ESTABLISH, NULL);
/* send response to server */
resp = rspro_gen_ConfigClientRes(ResultCode_ok);
ipa_client_conn_send_rspro(srvc->conn, resp);
break;
default:
fprintf(stderr, "Unknown/Unsupported RSPRO PDU type: %u\n", pdu->msg.present);
return -1;
}
return 0;
}
static void print_welcome(void)
{
printf("simtrace2-remsim-client - Remote SIM card client for SIMtrace\n"
"(C) 2010-2017, 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--bankd-port PORT\n"
"\t-h\t--help\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' },
{ "gsmtap-ip", 1, 0, 'i' },
{ "help", 0, 0, 'h' },
{ "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;
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 = 9999;
int if_num = 0, vendor_id = -1, product_id = -1;
int config_id = -1, altsetting = 0, addr = -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:hi:V:P:C:I:S:A:H:a:k", opts, &option_index);
if (c == -1)
break;
switch (c) {
case 's':
server_host = optarg;
break;
case 'p':
server_port = atoi(optarg);
break;
case 'h':
print_help();
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;
}
rc = 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_tall_ctx = talloc_named_const(NULL, 0, "global");
g_client = talloc_zero(g_tall_ctx, struct bankd_client);
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);
}
asn_debug = 0;
osmo_init_logging2(g_tall_ctx, &log_info);
if (bankd_conn_fsm_alloc(g_client) < 0) {
fprintf(stderr, "Unable to connect: %s\n", strerror(errno));
exit(1);
}
// 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 = usb_open_claim_interface(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 = get_usb_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);
}
/* 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);
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;
}
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