| /* (C) 2018-2020 by Harald Welte <laforge@gnumonks.org> |
| * |
| * 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. |
| * |
| */ |
| |
| /* This file contains code shared among all remsim client applications, |
| * including the ifd-handler, which is not an executable program with a main() |
| * function or command line parsing, but a shared library */ |
| |
| #include <errno.h> |
| #include <string.h> |
| |
| #include <talloc.h> |
| |
| #include <osmocom/core/fsm.h> |
| #include <osmocom/core/utils.h> |
| #include <osmocom/core/logging.h> |
| |
| #include "rspro_util.h" |
| #include "client.h" |
| #include "debug.h" |
| |
| struct client_config *client_config_init(void *ctx) |
| { |
| struct client_config *cfg = talloc_zero(ctx, struct client_config); |
| if (!cfg) |
| return NULL; |
| |
| cfg->server_host = talloc_strdup(cfg, "127.0.0.1"); |
| cfg->server_port = 9998; |
| cfg->client_id = -1; |
| cfg->client_slot = -1; |
| cfg->gsmtap_host = talloc_strdup(cfg, "127.0.0.1"); |
| cfg->keep_running = false; |
| |
| cfg->usb.vendor_id = -1; |
| cfg->usb.product_id = -1; |
| cfg->usb.config_id = -1; |
| cfg->usb.if_num = -1; |
| cfg->usb.altsetting = 0; |
| cfg->usb.addr = -1; |
| cfg->usb.path = NULL; |
| |
| cfg->atr.data[0] = 0x3B; |
| cfg->atr.data[1] = 0x00; // the shortest simplest ATR possible |
| cfg->atr.len = 2; |
| |
| return cfg; |
| }; |
| |
| static int bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU_t *pdu) |
| { |
| struct bankd_client *bc = bankdc2bankd_client(bankdc); |
| |
| switch (pdu->msg.present) { |
| case RsproPDUchoice_PR_connectClientRes: |
| if (pdu->msg.choice.connectClientRes.identity.type != ComponentType_remsimBankd) { |
| LOGPFSML(bankdc->fi, LOGL_ERROR, "Server connection to a ComponentType(%ld) != RemsimBankd? " |
| "Check your IP/Port configuration\n", |
| pdu->msg.choice.connectClientRes.identity.type); |
| osmo_fsm_inst_dispatch(bankdc->fi, SRVC_E_DISCONNECT, NULL); |
| return -1; |
| } |
| /* Store 'identity' of bankd to in peer_comp_id */ |
| rspro_comp_id_retrieve(&bankdc->peer_comp_id, &pdu->msg.choice.connectClientRes.identity); |
| osmo_fsm_inst_dispatch(bankdc->fi, SRVC_E_CLIENT_CONN_RES, (void *) pdu); |
| break; |
| case RsproPDUchoice_PR_tpduCardToModem: |
| return osmo_fsm_inst_dispatch(bc->main_fi, MF_E_BANKD_TPDU, (void *) pdu); |
| case RsproPDUchoice_PR_setAtrReq: |
| return osmo_fsm_inst_dispatch(bc->main_fi, MF_E_BANKD_ATR, (void *) pdu); |
| case RsproPDUchoice_PR_bankSlotStatusInd: |
| return osmo_fsm_inst_dispatch(bc->main_fi, MF_E_BANKD_SLOT_STATUS, (void *) pdu); |
| default: |
| LOGPFSML(bankdc->fi, LOGL_ERROR, "Unknown/Unsupported RSPRO PDU %s\n", |
| rspro_msgt_name(pdu)); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| /* handle incoming messages from server */ |
| static int srvc_handle_rx(struct rspro_server_conn *srvc, const RsproPDU_t *pdu) |
| { |
| struct bankd_client *bc = srvc2bankd_client(srvc); |
| RsproPDU_t *resp; |
| |
| switch (pdu->msg.present) { |
| case RsproPDUchoice_PR_connectClientRes: |
| if (pdu->msg.choice.connectClientRes.identity.type != ComponentType_remsimServer) { |
| LOGPFSML(srvc->fi, LOGL_ERROR, "Server connection to a ComponentType(%ld) != RemsimServer? " |
| "Check your IP/Port configuration\n", |
| pdu->msg.choice.connectClientRes.identity.type); |
| osmo_fsm_inst_dispatch(srvc->fi, SRVC_E_DISCONNECT, NULL); |
| return -1; |
| } |
| /* 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_configClientIdReq: |
| /* store/set the clientID as instructed by the server */ |
| if (!srvc->clslot) |
| srvc->clslot = talloc_zero(srvc, ClientSlot_t); |
| *srvc->clslot = pdu->msg.choice.configClientIdReq.clientSlot; |
| if (!bc->bankd_conn.clslot) |
| bc->bankd_conn.clslot = talloc_zero(bc, ClientSlot_t); |
| *bc->bankd_conn.clslot = *bc->srv_conn.clslot; |
| /* send response to server */ |
| resp = rspro_gen_ConfigClientIdRes(ResultCode_ok); |
| server_conn_send_rspro(srvc, resp); |
| break; |
| case RsproPDUchoice_PR_configClientBankReq: |
| osmo_fsm_inst_dispatch(bc->main_fi, MF_E_SRVC_CONFIG_BANK, (void *) pdu); |
| break; |
| default: |
| LOGPFSML(srvc->fi, LOGL_ERROR, "Unknown/Unsupported RSPRO PDU type: %s\n", |
| rspro_msgt_name(pdu)); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| struct bankd_client *remsim_client_create(void *ctx, const char *name, const char *software, |
| struct client_config *cfg) |
| { |
| struct bankd_client *bc = talloc_zero(ctx, struct bankd_client); |
| struct rspro_server_conn *srvc, *bankdc; |
| int rc; |
| |
| if (!bc) |
| return NULL; |
| |
| bc->cfg = cfg; |
| |
| bc->main_fi = main_fsm_alloc(bc, bc); |
| if (!bc->main_fi) { |
| LOGP(DMAIN, LOGL_FATAL, "Unable to create main client FSM: %s\n", strerror(errno)); |
| exit(1); |
| } |
| |
| remsim_client_set_clslot(bc, cfg->client_id, cfg->client_slot); |
| |
| /* create and [attempt to] establish connection to remsim-server */ |
| srvc = &bc->srv_conn; |
| srvc->server_host = cfg->server_host; |
| srvc->server_port = cfg->server_port; |
| srvc->handle_rx = srvc_handle_rx; |
| srvc->own_comp_id.type = ComponentType_remsimClient; |
| OSMO_STRLCPY_ARRAY(srvc->own_comp_id.name, name); |
| OSMO_STRLCPY_ARRAY(srvc->own_comp_id.software, software); |
| OSMO_STRLCPY_ARRAY(srvc->own_comp_id.sw_version, PACKAGE_VERSION); |
| |
| rc = server_conn_fsm_alloc(bc, srvc); |
| if (rc < 0) { |
| LOGP(DMAIN, LOGL_FATAL, "Unable to create Server conn FSM: %s\n", strerror(errno)); |
| exit(1); |
| } |
| osmo_fsm_inst_change_parent(srvc->fi, bc->main_fi, MF_E_SRVC_LOST); |
| srvc->parent_conn_evt = MF_E_SRVC_CONNECTED; |
| srvc->parent_disc_evt = MF_E_SRVC_LOST; |
| |
| bankdc = &bc->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(bc, bankdc); |
| if (rc < 0) { |
| LOGP(DMAIN, LOGL_FATAL, "Unable to connect bankd conn FSM: %s\n", strerror(errno)); |
| exit(1); |
| } |
| osmo_fsm_inst_update_id(bankdc->fi, "bankd"); |
| osmo_fsm_inst_change_parent(bankdc->fi, bc->main_fi, MF_E_BANKD_LOST); |
| bankdc->parent_conn_evt = MF_E_BANKD_CONNECTED; |
| bankdc->parent_disc_evt = MF_E_BANKD_LOST; |
| |
| return bc; |
| } |
| |
| void remsim_client_set_clslot(struct bankd_client *bc, int client_id, int slot_nr) |
| { |
| if (!bc->srv_conn.clslot) { |
| bc->srv_conn.clslot = talloc_zero(bc, ClientSlot_t); |
| OSMO_ASSERT(bc->srv_conn.clslot); |
| } |
| |
| if (!bc->bankd_conn.clslot) { |
| bc->bankd_conn.clslot = talloc_zero(bc, ClientSlot_t); |
| OSMO_ASSERT(bc->bankd_conn.clslot); |
| } |
| |
| if (client_id >= 0) { |
| bc->srv_conn.clslot->clientId = client_id; |
| bc->bankd_conn.clslot->clientId = client_id; |
| } |
| |
| if (slot_nr >= 0) { |
| bc->srv_conn.clslot->slotNr = slot_nr; |
| bc->bankd_conn.clslot->slotNr = slot_nr; |
| } |
| } |