mirror of https://gerrit.osmocom.org/simtrace2
Add simtrace2-remsim applications
This commit is contained in:
parent
b26d0038f6
commit
095ac6cbe2
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@ -0,0 +1,15 @@
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LDFLAGS=`pkg-config --libs libusb-1.0 libosmocore` -losmocore
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all: simtrace2-remsim simtrace2-remsim-usb2udp
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simtrace2-remsim: simtrace2-remsim.o apdu_dispatch.o
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$(CC) -o $@ $^ $(LDFLAGS) -losmosim
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simtrace2-remsim-usb2udp: usb2udp.o
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$(CC) -o $@ $^ $(LDFLAGS)
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%.o: %.c
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$(CC) $(CFLAGS) `pkg-config --cflags libusb-1.0 libosmocore` -o $@ -c $^
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clean:
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@rm -f simtrace2-remsim simtrace2-remsim-usb2udp *.o
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@ -0,0 +1,173 @@
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/* apdu_dispatch - State machine to determine Rx/Tx phases of APDU
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*
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* (C) 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 <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <errno.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/sim/sim.h>
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#include <osmocom/sim/class_tables.h>
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#include "apdu_dispatch.h"
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/*! \brief Has the command-data phase been completed yet? */
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static inline bool is_dc_complete(struct apdu_context *ac)
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{
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return (ac->lc.tot == ac->lc.cur);
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}
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/*! \brief Has the expected-data phase been completed yet? */
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static inline bool is_de_complete(struct apdu_context *ac)
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{
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return (ac->le.tot == ac->le.cur);
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}
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static const char *dump_apdu_hdr(const struct osim_apdu_cmd_hdr *h)
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{
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static char buf[256];
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sprintf(buf, "CLA=%02x INS=%02x P1=%02x P2=%02x P3=%02x",
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h->cla, h->ins, h->p1, h->p2, h->p3);
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return buf;
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}
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static void dump_apdu_ctx(const struct apdu_context *ac)
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{
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printf("%s; case=%d, lc=%d(%d), le=%d(%d)\n",
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dump_apdu_hdr(&ac->hdr), ac->apdu_case,
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ac->lc.tot, ac->lc.cur,
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ac->le.tot, ac->le.cur);
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}
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/*! \brief input function for APDU segmentation
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* \param ac APDU context accross successive calls
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* \param[in] apdu_buf APDU inpud data buffer
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* \param[in] apdu_len Length of apdu_buf
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* \param[in] new_apdu Is this the beginning of a new APDU?
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*
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* The function returns APDU_ACT_TX_CAPDU_TO_CARD once there is
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* sufficient data of the APDU received to transmit the command-APDU to
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* the actual card.
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*
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* The function retunrs APDU_ACT_RX_MORE_CAPDU_FROM_READER when there
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* is more data to be received from the card reader (GSM Phone).
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*/
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int apdu_segment_in(struct apdu_context *ac, const uint8_t *apdu_buf,
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unsigned int apdu_len, bool new_apdu)
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{
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int rc = 0;
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if (new_apdu) {
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/* initialize the apdu context structure */
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memset(ac, 0, sizeof(*ac));
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/* copy APDU header over */
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memcpy(&ac->hdr, apdu_buf, sizeof(ac->hdr));
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ac->apdu_case = osim_determine_apdu_case(&osim_uicc_sim_cic_profile, apdu_buf);
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switch (ac->apdu_case) {
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case 1: /* P3 == 0, No Lc/Le */
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ac->le.tot = ac->lc.tot = 0;
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break;
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case 2: /* P3 == Le */
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ac->le.tot = ac->hdr.p3;
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break;
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case 3: /* P3 = Lc */
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ac->lc.tot = ac->hdr.p3;
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/* copy Dc */
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ac->lc.cur = apdu_len - sizeof(ac->hdr);
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memcpy(ac->dc, apdu_buf + sizeof(ac->hdr),
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ac->lc.cur);
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break;
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case 4: /* P3 = Lc; SW with Le */
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ac->lc.tot = ac->hdr.p3;
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/* copy Dc */
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ac->lc.cur = apdu_len - sizeof(ac->hdr);
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memcpy(ac->dc, apdu_buf + sizeof(ac->hdr),
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ac->lc.cur);
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break;
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case 0:
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default:
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fprintf(stderr, "Unknown APDU case %d\n", ac->apdu_case);
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return -1;
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}
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} else {
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/* copy more data, if available */
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int cpy_len;
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switch (ac->apdu_case) {
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case 1:
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case 2:
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break;
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case 3:
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case 4:
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cpy_len = ac->lc.tot - ac->lc.cur;
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if (cpy_len > apdu_len)
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cpy_len = apdu_len;
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memcpy(ac->dc+ac->lc.cur, apdu_buf, cpy_len);
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ac->lc.cur += cpy_len;
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break;
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default:
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fprintf(stderr, "Unknown APDU case %d\n", ac->apdu_case);
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break;
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}
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}
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/* take some decisions... */
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switch (ac->apdu_case) {
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case 1: /* P3 == 0, No Lc/Le */
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/* send C-APDU to card */
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/* receive SW from card, forward to reader */
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rc |= APDU_ACT_TX_CAPDU_TO_CARD;
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break;
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case 2: /* P3 == Le */
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/* send C-APDU to card */
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/* receive Le bytes + SW from card, forward to reader */
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rc |= APDU_ACT_TX_CAPDU_TO_CARD;
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break;
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case 3: /* P3 = Lc */
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if (!is_dc_complete(ac)) {
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/* send PB + read further Lc bytes from reader */
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rc |= APDU_ACT_RX_MORE_CAPDU_FROM_READER;
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} else {
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/* send C-APDU to card */
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/* receive SW from card, forward to reader */
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rc |= APDU_ACT_TX_CAPDU_TO_CARD;
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}
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break;
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case 4: /* P3 = Lc; SW with Le */
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if (!is_dc_complete(ac)) {
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/* send PB + read further Lc bytes from reader */
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rc |= APDU_ACT_RX_MORE_CAPDU_FROM_READER;
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} else {
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/* send C-APDU to card */
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/* receive SW from card, forward to reader */
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rc |= APDU_ACT_TX_CAPDU_TO_CARD;
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}
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break;
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case 0:
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default:
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fprintf(stderr, "Unknown APDU case %d\n", ac->apdu_case);
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break;
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}
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dump_apdu_ctx(ac);
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return rc;
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}
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <osmocom/sim/sim.h>
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struct apdu_context {
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struct osim_apdu_cmd_hdr hdr;
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uint8_t dc[256];
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uint8_t de[256];
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uint8_t sw[2];
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uint8_t apdu_case;
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struct {
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uint8_t tot;
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uint8_t cur;
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} lc;
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struct {
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uint8_t tot;
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uint8_t cur;
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} le;
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};
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enum apdu_action {
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APDU_ACT_TX_CAPDU_TO_CARD = 0x0001,
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APDU_ACT_RX_MORE_CAPDU_FROM_READER = 0x0002,
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};
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int apdu_segment_in(struct apdu_context *ac, const uint8_t *apdu_buf,
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unsigned int apdu_len, bool new_apdu);
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../firmware/src_simtrace/cardemu_prot.h
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#ifndef _SIMTRACE_H
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#define _SIMTRACE_H
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#define SIMTRACE_USB_VENDOR 0x1d50
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#define SIMTRACE_USB_PRODUCT 0x60e3
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/* FIXME: automatically determine those values based on the usb config /
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* interface descriptors */
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#define SIMTRACE_OUT_EP 0x04
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#define SIMTRACE_IN_EP 0x85
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#define SIMTRACE_INT_EP 0x86
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#endif
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@ -0,0 +1,476 @@
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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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#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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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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return libusb_bulk_transfer(g_devh, SIMTRACE_OUT_EP, buf, len,
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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,
|
||||
err->msg_len ? err->msg : "");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*! \brief Process a RX-DATA indication message from the SIMtrace2 */
|
||||
static int process_do_rx_da(uint8_t *buf, int len)
|
||||
{
|
||||
static struct apdu_context ac;
|
||||
struct cardemu_usb_msg_rx_data *data;
|
||||
const uint8_t sw_success[] = { 0x90, 0x00 };
|
||||
int rc;
|
||||
|
||||
data = (struct cardemu_usb_msg_rx_data *) buf;
|
||||
|
||||
printf("=> 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);
|
||||
|
||||
if (rc & APDU_ACT_TX_CAPDU_TO_CARD) {
|
||||
struct msgb *tmsg = msgb_alloc(1024, "TPDU");
|
||||
struct osim_reader_hdl *rh = g_chan->card->reader;
|
||||
uint8_t *cur;
|
||||
|
||||
/* Copy TPDU header */
|
||||
cur = msgb_put(tmsg, sizeof(ac.hdr));
|
||||
memcpy(cur, &ac.hdr, sizeof(ac.hdr));
|
||||
/* Copy D(c), if any */
|
||||
if (ac.lc.tot) {
|
||||
cur = msgb_put(tmsg, ac.lc.tot);
|
||||
memcpy(cur, ac.dc, ac.lc.tot);
|
||||
}
|
||||
/* send to actual card */
|
||||
tmsg->l3h = tmsg->tail;
|
||||
rc = rh->ops->transceive(rh, tmsg);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "error during transceive: %d\n", rc);
|
||||
msgb_free(tmsg);
|
||||
return rc;
|
||||
}
|
||||
msgb_apdu_sw(tmsg) = msgb_get_u16(tmsg);
|
||||
ac.sw[0] = msgb_apdu_sw(tmsg) >> 8;
|
||||
ac.sw[1] = msgb_apdu_sw(tmsg) & 0xff;
|
||||
printf("SW=0x%04x, len_rx=%d\n", msgb_apdu_sw(tmsg), msgb_l3len(tmsg));
|
||||
if (msgb_l3len(tmsg))
|
||||
request_pb_and_tx(ac.hdr.ins, tmsg->l3h, msgb_l3len(tmsg));
|
||||
request_sw_tx(ac.sw);
|
||||
} else if (ac.lc.tot > ac.lc.cur) {
|
||||
request_pb_and_rx(ac.hdr.ins, ac.lc.tot - ac.lc.cur);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*! \brief Process an incoming message from the SIMtrace2 */
|
||||
static int process_usb_msg(uint8_t *buf, int len)
|
||||
{
|
||||
struct cardemu_usb_msg_hdr *sh = (struct cardemu_usb_msg_hdr *)buf;
|
||||
uint8_t *payload;
|
||||
int payload_len;
|
||||
int rc;
|
||||
|
||||
printf("-> %s\n", osmo_hexdump(buf, len));
|
||||
|
||||
switch (sh->msg_type) {
|
||||
case CEMU_USB_MSGT_DO_STATUS:
|
||||
rc = process_do_status(buf, len);
|
||||
break;
|
||||
case CEMU_USB_MSGT_DO_PTS:
|
||||
rc = process_do_pts(buf, len);
|
||||
break;
|
||||
case CEMU_USB_MSGT_DO_ERROR:
|
||||
rc = process_do_error(buf, len);
|
||||
break;
|
||||
case CEMU_USB_MSGT_DO_RX_DATA:
|
||||
rc = process_do_rx_da(buf, len);
|
||||
break;
|
||||
default:
|
||||
printf("unknown simtrace msg type 0x%02x\n", sh->msg_type);
|
||||
rc = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void print_welcome(void)
|
||||
{
|
||||
printf("simtrace2-remsim - Remote SIM card forwarding\n"
|
||||
"(C) 2010-2016 by Harald Welte <laforge@gnumonks.org>\n\n");
|
||||
}
|
||||
|
||||
static void print_help(void)
|
||||
{
|
||||
printf( "\t-i\t--gsmtap-ip\tA.B.C.D\n"
|
||||
"\t-a\t--skip-atr\n"
|
||||
"\t-h\t--help\n"
|
||||
"\t-k\t--keep-running\n"
|
||||
"\n"
|
||||
);
|
||||
}
|
||||
|
||||
static const struct option opts[] = {
|
||||
{ "gsmtap-ip", 1, 0, 'i' },
|
||||
{ "skip-atr", 0, 0, 'a' },
|
||||
{ "help", 0, 0, 'h' },
|
||||
{ "keep-running", 0, 0, 'k' },
|
||||
{ NULL, 0, 0, 0 }
|
||||
};
|
||||
|
||||
static void run_mainloop(void)
|
||||
{
|
||||
unsigned int msg_count, byte_count = 0;
|
||||
char buf[16*265];
|
||||
int xfer_len;
|
||||
int rc;
|
||||
|
||||
printf("Entering main loop\n");
|
||||
|
||||
while (1) {
|
||||
/* read data from SIMtrace2 device (local or via USB) */
|
||||
if (g_udp_fd < 0) {
|
||||
rc = libusb_bulk_transfer(g_devh, SIMTRACE_IN_EP, buf, sizeof(buf), &xfer_len, 100000);
|
||||
if (rc < 0 && rc != LIBUSB_ERROR_TIMEOUT) {
|
||||
fprintf(stderr, "BULK IN transfer error; rc=%d\n", rc);
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
rc = read(g_udp_fd, buf, sizeof(buf));
|
||||
if (rc <= 0) {
|
||||
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;
|
||||
char *remote_udp_host = NULL;
|
||||
struct osim_reader_hdl *reader;
|
||||
struct osim_card_hdl *card;
|
||||
|
||||
print_welcome();
|
||||
|
||||
while (1) {
|
||||
int option_index = 0;
|
||||
|
||||
c = getopt_long(argc, argv, "r:p:hi:ak", opts, &option_index);
|
||||
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;
|
||||
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,
|
||||
remote_udp_port, OSMO_SOCK_F_CONNECT);
|
||||
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;
|
||||
}
|
||||
|
||||
rc = libusb_claim_interface(g_devh, 0);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "can't claim interface; rc=%d\n", rc);
|
||||
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;
|
||||
}
|
||||
|
|
@ -0,0 +1,280 @@
|
|||
/* simtrace - main program for the host PC
|
||||
*
|
||||
* (C) 2010-2016 by Harald Welte <hwelte@hmw-consulting.de>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2
|
||||
* as published by the Free Software Foundation
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdint.h>
|
||||
#include <time.h>
|
||||
#define _GNU_SOURCE
|
||||
#include <getopt.h>
|
||||
#include <poll.h>
|
||||
|
||||
#include <sys/time.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netinet/in.h>
|
||||
#include <arpa/inet.h>
|
||||
|
||||
#include <libusb.h>
|
||||
|
||||
#include "simtrace.h"
|
||||
#include "cardemu_prot.h"
|
||||
#include "apdu_dispatch.h"
|
||||
|
||||
#include <osmocom/core/utils.h>
|
||||
#include <osmocom/core/socket.h>
|
||||
#include <osmocom/core/select.h>
|
||||
|
||||
struct libusb_device_handle *g_devh;
|
||||
static struct sockaddr_in g_sa_remote;
|
||||
static struct osmo_fd g_udp_ofd;
|
||||
|
||||
static void print_welcome(void)
|
||||
{
|
||||
printf("usb2udp - UDP/IP forwarding of SIMtrace card emulation\n"
|
||||
"(C) 2016 by Harald Welte <laforge@gnumonks.org>\n\n");
|
||||
}
|
||||
|
||||
static void print_help(void)
|
||||
{
|
||||
printf( "\t-h\t--help\n"
|
||||
"\n"
|
||||
);
|
||||
}
|
||||
|
||||
struct ep_buf {
|
||||
uint8_t ep;
|
||||
uint8_t buf[1024];
|
||||
struct libusb_transfer *xfer;
|
||||
};
|
||||
static struct ep_buf g_buf_in;
|
||||
static struct ep_buf g_buf_out;
|
||||
|
||||
static void usb_in_xfer_cb(struct libusb_transfer *xfer)
|
||||
{
|
||||
int rc;
|
||||
|
||||
printf("xfer_cb(ep=%02x): status=%d, flags=0x%x, type=%u, len=%u, act_len=%u\n",
|
||||
xfer->endpoint, xfer->status, xfer->flags, xfer->type, xfer->length, xfer->actual_length);
|
||||
switch (xfer->status) {
|
||||
case LIBUSB_TRANSFER_COMPLETED:
|
||||
switch (xfer->endpoint) {
|
||||
case SIMTRACE_IN_EP:
|
||||
/* process the data */
|
||||
printf("read %d bytes from SIMTRACE, forwarding to UDP\n", xfer->actual_length);
|
||||
rc = sendto(g_udp_ofd.fd, xfer->buffer, xfer->actual_length, 0, (struct sockaddr *)&g_sa_remote, sizeof(g_sa_remote));
|
||||
if (rc <= 0) {
|
||||
fprintf(stderr, "error writing to UDP\n");
|
||||
}
|
||||
/* and re-submit the URB */
|
||||
libusb_submit_transfer(xfer);
|
||||
break;
|
||||
case SIMTRACE_OUT_EP:
|
||||
/* re-enable reading from the UDP side */
|
||||
g_udp_ofd.when |= BSC_FD_READ;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "xfer_cb(ERROR '%s')\n", osmo_hexdump_nospc(xfer->buffer, xfer->actual_length));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void init_ep_buf(int ep, struct ep_buf *epb)
|
||||
{
|
||||
epb->ep = ep;
|
||||
if (!epb->xfer)
|
||||
epb->xfer = libusb_alloc_transfer(0);
|
||||
|
||||
epb->xfer->flags = 0;
|
||||
|
||||
libusb_fill_bulk_transfer(epb->xfer, g_devh, epb->ep, epb->buf, sizeof(epb->buf), usb_in_xfer_cb, NULL, 0);
|
||||
}
|
||||
|
||||
/***********************************************************************
|
||||
* libosmocore main loop integration of libusb async I/O
|
||||
***********************************************************************/
|
||||
|
||||
static int g_libusb_pending = 0;
|
||||
|
||||
static int ofd_libusb_cb(struct osmo_fd *ofd, unsigned int what)
|
||||
{
|
||||
/* FIXME */
|
||||
g_libusb_pending = 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* call-back when libusb adds a FD */
|
||||
static void libusb_fd_added_cb(int fd, short events, void *user_data)
|
||||
{
|
||||
struct osmo_fd *ofd = talloc_zero(NULL, struct osmo_fd);
|
||||
|
||||
printf("%s(%u, %x)\n", __func__, fd, events);
|
||||
|
||||
ofd->fd = fd;
|
||||
ofd->cb = &ofd_libusb_cb;
|
||||
if (events & POLLIN)
|
||||
ofd->when |= BSC_FD_READ;
|
||||
if (events & POLLOUT)
|
||||
ofd->when |= BSC_FD_WRITE;
|
||||
|
||||
osmo_fd_register(ofd);
|
||||
}
|
||||
|
||||
/* call-back when libusb removes a FD */
|
||||
static void libusb_fd_removed_cb(int fd, void *user_data)
|
||||
{
|
||||
struct osmo_fd *ofd;
|
||||
|
||||
printf("%s(%u)\n", __func__, fd);
|
||||
#if 0
|
||||
/* FIXME: This needs new export in libosmocore! */
|
||||
ofd = osmo_fd_get_by_fd(fd);
|
||||
|
||||
if (ofd) {
|
||||
osmo_fd_unregister(ofd);
|
||||
talloc_free(ofd);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/* call-back when the UDP socket is readable */
|
||||
static int ofd_udp_cb(struct osmo_fd *ofd, unsigned int what)
|
||||
{
|
||||
int rc;
|
||||
int addrlen = sizeof(g_sa_remote);
|
||||
|
||||
rc = recvfrom(ofd->fd, g_buf_out.buf, sizeof(g_buf_out.buf), 0,
|
||||
(struct sockaddr *)&g_sa_remote, &addrlen);
|
||||
if (rc <= 0) {
|
||||
fprintf(stderr, "error reading from UDP\n");
|
||||
return 0;
|
||||
}
|
||||
printf("read %d bytes from UDP, forwarding to SIMTRACE\n", rc);
|
||||
g_buf_out.xfer->length = rc;
|
||||
|
||||
/* disable further READ interest for the UDP socket */
|
||||
ofd->when &= ~BSC_FD_READ;
|
||||
|
||||
/* submit the URB on the OUT end point */
|
||||
libusb_submit_transfer(g_buf_out.xfer);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void run_mainloop(void)
|
||||
{
|
||||
int rc;
|
||||
|
||||
printf("Entering main loop\n");
|
||||
|
||||
while (1) {
|
||||
osmo_select_main(0);
|
||||
if (g_libusb_pending) {
|
||||
struct timeval tv;
|
||||
memset(&tv, 0, sizeof(tv));
|
||||
rc = libusb_handle_events_timeout_completed(NULL, &tv, NULL);
|
||||
if (rc != 0) {
|
||||
fprintf(stderr, "handle_events_timeout_completed == %d\n", rc);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int rc;
|
||||
int c, ret = 1;
|
||||
char *remote_host = NULL;
|
||||
int local_udp_port = 52342;
|
||||
|
||||
print_welcome();
|
||||
|
||||
while (1) {
|
||||
int option_index = 0;
|
||||
static const struct option opts[] = {
|
||||
{ "udp-port", 1, 0, 'u' },
|
||||
{ "help", 0, 0, 'h' },
|
||||
{ NULL, 0, 0, 0 }
|
||||
};
|
||||
|
||||
c = getopt_long(argc, argv, "u:p:h", opts, &option_index);
|
||||
if (c == -1)
|
||||
break;
|
||||
switch (c) {
|
||||
case 'u':
|
||||
local_udp_port = atoi(optarg);
|
||||
break;
|
||||
case 'h':
|
||||
print_help();
|
||||
exit(0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
rc = libusb_init(NULL);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "libusb initialization failed\n");
|
||||
goto close_exit;
|
||||
}
|
||||
|
||||
libusb_set_pollfd_notifiers(NULL, &libusb_fd_added_cb, &libusb_fd_removed_cb, NULL);
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
rc = libusb_claim_interface(g_devh, 0);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "can't claim interface; rc=%d\n", rc);
|
||||
goto close_exit;
|
||||
}
|
||||
|
||||
/* open UDP socket, register with select handling and mark it
|
||||
* readable */
|
||||
g_udp_ofd.cb = ofd_udp_cb;
|
||||
osmo_sock_init_ofd(&g_udp_ofd, AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, local_udp_port, OSMO_SOCK_F_BIND);
|
||||
|
||||
/* initialize USB buffers / transfers */
|
||||
init_ep_buf(SIMTRACE_OUT_EP, &g_buf_out);
|
||||
init_ep_buf(SIMTRACE_IN_EP, &g_buf_in);
|
||||
|
||||
/* submit the first transfer for the IN endpoint */
|
||||
libusb_submit_transfer(g_buf_in.xfer);
|
||||
|
||||
run_mainloop();
|
||||
|
||||
ret = 0;
|
||||
|
||||
libusb_release_interface(g_devh, 0);
|
||||
close_exit:
|
||||
if (g_devh)
|
||||
libusb_close(g_devh);
|
||||
|
||||
release_exit:
|
||||
libusb_exit(NULL);
|
||||
return ret;
|
||||
}
|
||||
Loading…
Reference in New Issue