Replace bankd_client_fsm with rspro_client_fsm
There was a lot of similarity between the bankd_client_fsm (for the client->bankd RSPRO connection) and the rspro_client_fsm (for the client->server and the bankd->server RSPRO connections). With the last few commits introducing the missing features to rspro_client_fsm, we can completely obsolete bankd_client_fsm and further simplify the codebase. Change-Id: Icbe9881a0391fcd0c47e5d930dc764fc0cb1dfbf
This commit is contained in:
parent
a3b14d1890
commit
3e9860bb77
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@ -28,12 +28,12 @@ noinst_HEADERS = debug.h client.h rspro_util.h slotmap.h rspro_client_fsm.h \
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bin_PROGRAMS = osmo-remsim-client-st2
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remsim_client_SOURCES = remsim_client.c rspro_client_fsm.c bankd_client_fsm.c debug.c
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remsim_client_SOURCES = remsim_client.c rspro_client_fsm.c debug.c
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remsim_client_LDADD = $(OSMOCORE_LIBS) $(OSMOGSM_LIBS) $(OSMOABIS_LIBS) \
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libosmo-rspro.la
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osmo_remsim_client_st2_SOURCES = simtrace2-remsim_client.c \
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bankd_client_fsm.c rspro_client_fsm.c debug.c \
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rspro_client_fsm.c debug.c \
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simtrace2/apdu_dispatch.c \
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simtrace2/simtrace2-discovery.c \
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simtrace2/libusb_util.c
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@ -1,278 +0,0 @@
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/* (C) 2018-2019 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <talloc.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/abis/ipa.h>
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#include <osmocom/gsm/protocol/ipaccess.h>
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#include "client.h"
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#include "rspro_util.h"
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#define S(x) (1 << (x))
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static void bankd_updown_cb(struct ipa_client_conn *conn, int up)
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{
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struct bankd_client *bc = conn->data;
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printf("RSPRO link to %s:%d %s\n", conn->addr, conn->port, up ? "UP" : "DOWN");
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osmo_fsm_inst_dispatch(bc->bankd_fi, up ? BDC_E_TCP_UP: BDC_E_TCP_DOWN, 0);
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}
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/* internal function, bypassing FSM state */
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static int _bankd_conn_send_rspro(struct bankd_client *bc, RsproPDU_t *rspro)
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{
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return ipa_client_conn_send_rspro(bc->bankd_conn, rspro);
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}
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int bankd_conn_send_rspro(struct bankd_client *bc, RsproPDU_t *rspro)
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{
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if (osmo_fsm_inst_dispatch(bc->bankd_fi, BDC_E_RSPRO_TX, rspro) < 0) {
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ASN_STRUCT_FREE(asn_DEF_RsproPDU, rspro);
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return -1;
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}
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return 0;
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}
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/***********************************************************************
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* client-side FSM for RSPRO connection to remsim-bankd
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*
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* This is part of remsim-client and manages the connection to remsim-bankd,
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* over which actual TPDU exchanges happen.
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***********************************************************************/
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enum bankd_conn_fsm_state {
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/* waiting for initial connection to remsim-bankd */
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BDC_ST_INIT,
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/* bankd connection established, waiting for ClientConnectRes */
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BDC_ST_ESTABLISHED,
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/* bankd connection established, ClientConnect succeeded */
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BDC_ST_CONNECTED,
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/* connection lost, we're waiting for a re-establish */
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BDC_ST_REESTABLISH,
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};
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static const struct value_string remsim_client_bankd_fsm_event_names[] = {
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OSMO_VALUE_STRING(BDC_E_ESTABLISH),
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OSMO_VALUE_STRING(BDC_E_TCP_UP),
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OSMO_VALUE_STRING(BDC_E_TCP_DOWN),
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OSMO_VALUE_STRING(BDC_E_CLIENT_CONN_RES),
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OSMO_VALUE_STRING(BDC_E_RSPRO_TX),
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{ 0, NULL }
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};
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#define T1_WAIT_CLIENT_CONN_RES 10
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#define T2_RECONNECT 10
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static void bdc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_ESTABLISH:
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_established_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct bankd_client *bc = (struct bankd_client *) fi->priv;
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RsproPDU_t *pdu;
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/* Send ClientConnReq */
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pdu = rspro_gen_ConnectClientReq(&bc->srv_conn.own_comp_id, bc->srv_conn.clslot);
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_bankd_conn_send_rspro(bc, pdu);
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}
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static void bdc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_TCP_DOWN:
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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case BDC_E_CLIENT_CONN_RES:
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/* somehow notify the main code? */
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osmo_fsm_inst_state_chg(fi, BDC_ST_CONNECTED, 0, 0);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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struct bankd_client *bc = (struct bankd_client *) fi->priv;
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RsproPDU_t *pdu = NULL;
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switch (event) {
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case BDC_E_TCP_DOWN:
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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case BDC_E_RSPRO_TX:
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pdu = data;
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_bankd_conn_send_rspro(bc, pdu);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_reestablish_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct bankd_client *bc = (struct bankd_client *) fi->priv;
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int rc;
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/* re-create bankd_conn */
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if (bc->bankd_conn) {
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LOGPFSML(fi, LOGL_INFO, "Destroying existing connection to bankd\n");
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ipa_client_conn_close(bc->bankd_conn);
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ipa_client_conn_destroy(bc->bankd_conn);
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bc->bankd_conn = NULL;
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}
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LOGPFSML(fi, LOGL_INFO, "Creating TCP connection to bankd at %s:%u\n",
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bc->bankd_host, bc->bankd_port);
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bc->bankd_conn = ipa_client_conn_create(bc, NULL, 0, bc->bankd_host, bc->bankd_port,
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bankd_updown_cb, bankd_read_cb, NULL, bc);
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if (!bc->bankd_conn) {
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fprintf(stderr, "Unable to create socket: %s\n", strerror(errno));
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exit(1);
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}
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/* Attempt to connect TCP socket */
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rc = ipa_client_conn_open(bc->bankd_conn);
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if (rc < 0) {
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fprintf(stderr, "Unable to connect RSPRO to %s:%d - %s\n",
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bc->bankd_conn->addr, bc->bankd_conn->port, strerror(errno));
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/* FIXME: retry? Timer? Abort? */
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_TCP_UP:
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osmo_fsm_inst_state_chg(fi, BDC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1);
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break;
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case BDC_E_TCP_DOWN:
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/* wait for normal T2 timeout */
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_allstate_action(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_ESTABLISH:
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static int remsim_client_bankd_fsm_timer_cb(struct osmo_fsm_inst *fi)
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{
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switch (fi->T) {
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case 2:
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/* TCP reconnect failed: retry */
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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case 1:
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/* no ClientConnectRes received: disconnect + reconnect */
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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default:
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OSMO_ASSERT(0);
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}
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return 0;
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}
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static const struct osmo_fsm_state bankd_conn_fsm_states[] = {
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[BDC_ST_INIT] = {
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.name = "INIT",
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.in_event_mask = 0, /* S(BDC_E_ESTABLISH) via allstate */
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.out_state_mask = S(BDC_ST_REESTABLISH),
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.action = bdc_st_init,
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},
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[BDC_ST_ESTABLISHED] = {
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.name = "ESTABLISHED",
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.in_event_mask = S(BDC_E_TCP_DOWN) | S(BDC_E_CLIENT_CONN_RES),
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.out_state_mask = S(BDC_ST_CONNECTED) | S(BDC_ST_REESTABLISH),
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.action = bdc_st_established,
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.onenter = bdc_st_established_onenter,
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},
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[BDC_ST_CONNECTED] = {
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.name = "CONNECTED",
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.in_event_mask = S(BDC_E_TCP_DOWN) | S(BDC_E_RSPRO_TX),
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.out_state_mask = S(BDC_ST_REESTABLISH),
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.action = bdc_st_connected,
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},
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[BDC_ST_REESTABLISH] = {
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.name = "REESTABLISH",
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.in_event_mask = S(BDC_E_TCP_UP) | S(BDC_E_TCP_DOWN),
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.out_state_mask = S(BDC_ST_ESTABLISHED) | S(BDC_ST_REESTABLISH),
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.action = bdc_st_reestablish,
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.onenter = bdc_st_reestablish_onenter,
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},
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};
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struct osmo_fsm remsim_client_bankd_fsm = {
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.name = "BANKD_CONN",
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.states = bankd_conn_fsm_states,
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.num_states = ARRAY_SIZE(bankd_conn_fsm_states),
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.allstate_event_mask = S(BDC_E_ESTABLISH),
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.allstate_action = bdc_allstate_action,
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.timer_cb = remsim_client_bankd_fsm_timer_cb,
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.log_subsys = DMAIN,
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.event_names = remsim_client_bankd_fsm_event_names,
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};
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int bankd_conn_fsm_alloc(struct bankd_client *bc)
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{
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struct osmo_fsm_inst *fi;
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fi = osmo_fsm_inst_alloc(&remsim_client_bankd_fsm, bc, bc, LOGL_DEBUG, "bankd");
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if (!fi)
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return -1;
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bc->bankd_fi = fi;
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return 0;
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}
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static __attribute__((constructor)) void on_dso_load(void)
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{
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OSMO_ASSERT(osmo_fsm_register(&remsim_client_bankd_fsm) == 0);
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}
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24
src/client.h
24
src/client.h
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@ -9,36 +9,16 @@
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#include "slotmap.h"
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#include "debug.h"
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/* fsm.c */
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enum bankd_conn_fsm_event {
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BDC_E_ESTABLISH, /* instruct BDC to (re)etablish TCP connection to bankd */
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BDC_E_TCP_UP, /* notify BDC that TCP connection is up/connected */
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BDC_E_TCP_DOWN, /* notify BDC that TCP connection is down/disconnected */
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BDC_E_CLIENT_CONN_RES, /* notify BDC that ClientConnectRes has been received */
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BDC_E_RSPRO_TX, /* transmit a RSPRO PDU to the bankd */
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};
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extern struct osmo_fsm remsim_client_bankd_fsm;
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/* main.c */
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struct bankd_client {
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/* connection to the remsim-server (control) */
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struct rspro_server_conn srv_conn;
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/* connection to the remsim-bankd (data) */
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struct rspro_server_conn bankd_conn;
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/* remote component ID */
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struct app_comp_id peer_comp_id;
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/* connection to the remsim-bankd */
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char *bankd_host;
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uint16_t bankd_port;
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struct bank_slot bankd_slot;
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struct ipa_client_conn *bankd_conn;
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struct osmo_fsm_inst *bankd_fi;
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};
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int bankd_conn_send_rspro(struct bankd_client *bc, RsproPDU_t *pdu);
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int bankd_read_cb(struct ipa_client_conn *conn, struct msgb *msg);
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int bankd_conn_fsm_alloc(struct bankd_client *bc);
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@ -430,7 +430,7 @@ static int process_do_rx_da(struct cardem_inst *ci, uint8_t *buf, int len)
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BankSlot_t bslot;
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bank_slot2rspro(&bslot, &g_client->bankd_slot);
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RsproPDU_t *pdu = rspro_gen_TpduModem2Card(g_client->srv_conn.clslot, &bslot, apdu_command, sizeof(ac.hdr) + ac.lc.tot); // create RSPRO packet
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bankd_conn_send_rspro(g_client, pdu);
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server_conn_send_rspro(&g_client->bankd_conn, pdu);
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// the response will come separately
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} else if (ac.lc.tot > ac.lc.cur) { // there is pending data from the modem
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cardem_request_pb_and_rx(ci, ac.hdr.ins, ac.lc.tot - ac.lc.cur); // send procedure byte to get remaining data
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@ -532,7 +532,7 @@ static void signal_handler(int signal)
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/** remsim_client **/
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static int bankd_handle_tpduCardToModem(struct bankd_client *bc, RsproPDU_t *pdu)
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static int bankd_handle_tpduCardToModem(struct bankd_client *bc, const RsproPDU_t *pdu)
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{
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OSMO_ASSERT(pdu);
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OSMO_ASSERT(RsproPDUchoice_PR_tpduCardToModem == pdu->msg.present);
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@ -554,7 +554,7 @@ static int bankd_handle_tpduCardToModem(struct bankd_client *bc, RsproPDU_t *pdu
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return 0;
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}
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static int bankd_handle_setAtrReq(struct bankd_client *bc, RsproPDU_t *pdu)
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static int bankd_handle_setAtrReq(struct bankd_client *bc, const RsproPDU_t *pdu)
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{
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RsproPDU_t *resp;
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int rc;
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@ -571,70 +571,35 @@ static int bankd_handle_setAtrReq(struct bankd_client *bc, RsproPDU_t *pdu)
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resp = rspro_gen_SetAtrRes(ResultCode_cardTransmissionError);
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if (!resp)
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return -ENOMEM;
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bankd_conn_send_rspro(g_client, resp);
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server_conn_send_rspro(&g_client->bankd_conn, resp);
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return 0;
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}
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static int bankd_handle_msg(struct bankd_client *bc, struct msgb *msg)
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/* handle incoming message from bankd */
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static int bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU_t *pdu)
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{
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RsproPDU_t *pdu = rspro_dec_msg(msg);
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if (!pdu) {
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LOGPFSML(bc->bankd_fi, LOGL_ERROR, "Error decoding PDU\n");
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return -1;
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}
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switch (pdu->msg.present) {
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case RsproPDUchoice_PR_connectClientRes:
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/* Store 'identity' of bankd to in peer_comp_id */
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rspro_comp_id_retrieve(&bc->peer_comp_id, &pdu->msg.choice.connectClientRes.identity);
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osmo_fsm_inst_dispatch(bc->bankd_fi, BDC_E_CLIENT_CONN_RES, pdu);
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rspro_comp_id_retrieve(&bankdc->peer_comp_id, &pdu->msg.choice.connectClientRes.identity);
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osmo_fsm_inst_dispatch(bankdc->fi, SRVC_E_CLIENT_CONN_RES, (void *) pdu);
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break;
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case RsproPDUchoice_PR_tpduCardToModem: // APDU response from card received
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bankd_handle_tpduCardToModem(bc, pdu);
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bankd_handle_tpduCardToModem(g_client, pdu);
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break;
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case RsproPDUchoice_PR_setAtrReq:
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bankd_handle_setAtrReq(bc, pdu);
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bankd_handle_setAtrReq(g_client, pdu);
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break;
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default:
|
||||
LOGPFSML(bc->bankd_fi, LOGL_ERROR, "Unknown/Unsuppoerted RSPRO PDU %s: %s\n",
|
||||
rspro_msgt_name(pdu), msgb_hexdump(msg));
|
||||
LOGPFSML(bankdc->fi, LOGL_ERROR, "Unknown/Unsuppoerted RSPRO PDU %s\n",
|
||||
rspro_msgt_name(pdu));
|
||||
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;
|
||||
|
||||
LOGPFSML(bc->bankd_fi, LOGL_DEBUG, "Received RSPRO %s\n", msgb_hexdump(msg));
|
||||
|
||||
rc = bankd_handle_msg(bc, msg);
|
||||
msgb_free(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)
|
||||
{
|
||||
|
@ -651,18 +616,21 @@ static int srvc_handle_rx(struct rspro_server_conn *srvc, const RsproPDU_t *pdu)
|
|||
if (!g_client->srv_conn.clslot)
|
||||
g_client->srv_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
||||
*g_client->srv_conn.clslot = pdu->msg.choice.configClientIdReq.clientSlot;
|
||||
if (!g_client->bankd_conn.clslot)
|
||||
g_client->bankd_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
||||
*g_client->bankd_conn.clslot = *g_client->srv_conn.clslot;
|
||||
/* send response to server */
|
||||
resp = rspro_gen_ConfigClientIdRes(ResultCode_ok);
|
||||
server_conn_send_rspro(srvc, resp);
|
||||
break;
|
||||
case RsproPDUchoice_PR_configClientBankReq:
|
||||
/* store/set the bankd ip/port as instructed by the server */
|
||||
osmo_talloc_replace_string(g_client, &g_client->bankd_host,
|
||||
osmo_talloc_replace_string(g_client, &g_client->bankd_conn.server_host,
|
||||
rspro_IpAddr2str(&pdu->msg.choice.configClientBankReq.bankd.ip));
|
||||
rspro2bank_slot(&g_client->bankd_slot, &pdu->msg.choice.configClientBankReq.bankSlot);
|
||||
g_client->bankd_port = pdu->msg.choice.configClientBankReq.bankd.port;
|
||||
g_client->bankd_conn.server_port = pdu->msg.choice.configClientBankReq.bankd.port;
|
||||
/* instruct bankd FSM to connect */
|
||||
osmo_fsm_inst_dispatch(g_client->bankd_fi, BDC_E_ESTABLISH, NULL);
|
||||
osmo_fsm_inst_dispatch(g_client->bankd_conn.fi, SRVC_E_ESTABLISH, NULL);
|
||||
/* send response to server */
|
||||
resp = rspro_gen_ConfigClientBankRes(ResultCode_ok);
|
||||
server_conn_send_rspro(srvc, resp);
|
||||
|
@ -733,7 +701,7 @@ static const struct option opts[] = {
|
|||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
struct rspro_server_conn *srvc;
|
||||
struct rspro_server_conn *srvc, *bankdc;
|
||||
struct st_transport *transp = ci->slot->transp;
|
||||
char *gsmtap_host = "127.0.0.1";
|
||||
int rc;
|
||||
|
@ -853,6 +821,8 @@ int main(int argc, char **argv)
|
|||
g_client->srv_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
||||
g_client->srv_conn.clslot->clientId = client_id;
|
||||
g_client->srv_conn.clslot->slotNr = client_slot;
|
||||
g_client->bankd_conn.clslot = talloc_zero(g_client, ClientSlot_t);
|
||||
*g_client->bankd_conn.clslot = *g_client->srv_conn.clslot;
|
||||
}
|
||||
|
||||
srvc = &g_client->srv_conn;
|
||||
|
@ -870,13 +840,18 @@ int main(int argc, char **argv)
|
|||
}
|
||||
osmo_fsm_inst_dispatch(srvc->fi, SRVC_E_ESTABLISH, NULL);
|
||||
|
||||
asn_debug = 0;
|
||||
|
||||
if (bankd_conn_fsm_alloc(g_client) < 0) {
|
||||
fprintf(stderr, "Unable to connect: %s\n", strerror(errno));
|
||||
bankdc = &g_client->bankd_conn;
|
||||
/* server_host / server_port are configured from remsim-server */
|
||||
bankdc->handle_rx = bankd_handle_rx;
|
||||
memcpy(&bankdc->own_comp_id, &srvc->own_comp_id, sizeof(bankdc->own_comp_id));
|
||||
rc = server_conn_fsm_alloc(g_client, bankdc);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "Unable to create bankd conn FSM: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
asn_debug = 0;
|
||||
|
||||
// connect to SIMtrace2 cardem
|
||||
do {
|
||||
struct usb_interface_match _ifm, *ifm = &_ifm;
|
||||
|
|
Loading…
Reference in New Issue