client: Work without global g_client variable
We may want to develop programs that include multiple instances of a remsim_client. Let's remove the global variable 'g_client' and instead de-reference the bankd_client using container_of() macros Change-Id: I456fb633561b88912be2f78c3e0264794d921255
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@ -1,5 +1,6 @@
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#pragma once
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#include <osmocom/core/linuxlist.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/rspro/RsproPDU.h>
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@ -57,8 +58,9 @@ struct bankd_client {
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struct cardem_inst *cardem;
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};
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#define srvc2bankd_client(srvc) container_of(srvc, struct bankd_client, srv_conn)
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#define bankdc2bankd_client(bdc) container_of(bdc, struct bankd_client, bankd_conn)
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extern struct bankd_client *g_client;
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extern int client_user_bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU_t *pdu);
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@ -62,7 +62,7 @@ static int bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU_t *p
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return 0;
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}
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struct bankd_client *g_client;
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static struct bankd_client *g_client;
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static void *g_tall_ctx;
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void __thread *talloc_asn1_ctx;
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int asn_debug;
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@ -70,6 +70,7 @@ int asn_debug;
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/* handle incoming messages from server */
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static int srvc_handle_rx(struct rspro_server_conn *srvc, const RsproPDU_t *pdu)
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{
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struct bankd_client *bc = srvc2bankd_client(srvc);
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RsproPDU_t *resp;
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switch (pdu->msg.present) {
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@ -80,24 +81,24 @@ static int srvc_handle_rx(struct rspro_server_conn *srvc, const RsproPDU_t *pdu)
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break;
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case RsproPDUchoice_PR_configClientIdReq:
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/* store/set the clientID as instructed by the server */
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if (!g_client->srv_conn.clslot)
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g_client->srv_conn.clslot = talloc_zero(g_client, ClientSlot_t);
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*g_client->srv_conn.clslot = pdu->msg.choice.configClientIdReq.clientSlot;
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if (!g_client->bankd_conn.clslot)
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g_client->bankd_conn.clslot = talloc_zero(g_client, ClientSlot_t);
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*g_client->bankd_conn.clslot = *g_client->srv_conn.clslot;
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if (!srvc->clslot)
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srvc->clslot = talloc_zero(srvc, ClientSlot_t);
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*srvc->clslot = pdu->msg.choice.configClientIdReq.clientSlot;
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if (!bc->bankd_conn.clslot)
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bc->bankd_conn.clslot = talloc_zero(bc, ClientSlot_t);
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*bc->bankd_conn.clslot = *bc->srv_conn.clslot;
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/* send response to server */
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resp = rspro_gen_ConfigClientIdRes(ResultCode_ok);
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server_conn_send_rspro(srvc, resp);
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break;
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case RsproPDUchoice_PR_configClientBankReq:
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/* store/set the bankd ip/port as instructed by the server */
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osmo_talloc_replace_string(g_client, &g_client->bankd_conn.server_host,
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osmo_talloc_replace_string(bc, &bc->bankd_conn.server_host,
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rspro_IpAddr2str(&pdu->msg.choice.configClientBankReq.bankd.ip));
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rspro2bank_slot(&g_client->bankd_slot, &pdu->msg.choice.configClientBankReq.bankSlot);
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g_client->bankd_conn.server_port = pdu->msg.choice.configClientBankReq.bankd.port;
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rspro2bank_slot(&bc->bankd_slot, &pdu->msg.choice.configClientBankReq.bankSlot);
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bc->bankd_conn.server_port = pdu->msg.choice.configClientBankReq.bankd.port;
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/* instruct bankd FSM to connect */
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osmo_fsm_inst_dispatch(g_client->bankd_conn.fi, SRVC_E_ESTABLISH, NULL);
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osmo_fsm_inst_dispatch(bc->bankd_conn.fi, SRVC_E_ESTABLISH, NULL);
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/* send response to server */
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resp = rspro_gen_ConfigClientBankRes(ResultCode_ok);
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server_conn_send_rspro(srvc, resp);
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@ -48,12 +48,13 @@ static int bankd_handle_setAtrReq(struct bankd_client *bc, const RsproPDU_t *pdu
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int client_user_bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU_t *pdu)
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{
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struct bankd_client *client = bankdc2bankd_client(bankdc);
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switch (pdu->msg.present) {
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case RsproPDUchoice_PR_tpduCardToModem:
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bankd_handle_tpduCardToModem(g_client, pdu);
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bankd_handle_tpduCardToModem(client, pdu);
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break;
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case RsproPDUchoice_PR_setAtrReq:
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bankd_handle_setAtrReq(g_client, pdu);
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bankd_handle_setAtrReq(client, pdu);
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break;
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default:
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OSMO_ASSERT(0);
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@ -68,17 +69,19 @@ int client_user_bankd_handle_rx(struct rspro_server_conn *bankdc, const RsproPDU
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struct stdin_state {
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struct osmo_fd ofd;
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struct msgb *rx_msg;
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struct bankd_client *bc;
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};
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/* called every time a command on stdin was received */
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static void handle_stdin_command(struct stdin_state *ss, char *cmd)
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{
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struct bankd_client *bc = ss->bc;
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RsproPDU_t *pdu;
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BankSlot_t bslot;
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uint8_t buf[1024];
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int rc;
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bank_slot2rspro(&bslot, &g_client->bankd_slot);
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bank_slot2rspro(&bslot, &bc->bankd_slot);
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OSMO_ASSERT(ss->rx_msg);
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@ -86,9 +89,9 @@ static void handle_stdin_command(struct stdin_state *ss, char *cmd)
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if (!strcasecmp(cmd, "RESET")) {
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/* reset the [remote] card */
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pdu = rspro_gen_ClientSlotStatusInd(g_client->srv_conn.clslot, &bslot,
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pdu = rspro_gen_ClientSlotStatusInd(bc->srv_conn.clslot, &bslot,
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true, false, false, true);
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server_conn_send_rspro(&g_client->bankd_conn, pdu);
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server_conn_send_rspro(&bc->bankd_conn, pdu);
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} else {
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/* we assume the user has entered a C-APDU as hex string. parse + send */
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rc = osmo_hexparse(cmd, buf, sizeof(buf));
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@ -96,14 +99,14 @@ static void handle_stdin_command(struct stdin_state *ss, char *cmd)
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fprintf(stderr, "ERROR parsing C-APDU `%s'!\n", cmd);
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return;
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}
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if (!g_client->srv_conn.clslot) {
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if (!bc->srv_conn.clslot) {
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fprintf(stderr, "Cannot send command; no client slot\n");
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return;
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}
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/* Send CMD APDU to [remote] card */
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pdu = rspro_gen_TpduModem2Card(g_client->srv_conn.clslot, &bslot, buf, rc);
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server_conn_send_rspro(&g_client->bankd_conn, pdu);
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pdu = rspro_gen_TpduModem2Card(bc->srv_conn.clslot, &bslot, buf, rc);
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server_conn_send_rspro(&bc->bankd_conn, pdu);
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}
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}
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@ -144,7 +147,7 @@ static int stdin_fd_cb(struct osmo_fd *ofd, unsigned int what)
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/* main function */
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int client_user_main(struct bankd_client *g_client)
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int client_user_main(struct bankd_client *bc)
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{
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struct stdin_state ss;
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@ -152,6 +155,7 @@ int client_user_main(struct bankd_client *g_client)
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memset(&ss, 0, sizeof(ss));
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osmo_fd_setup(&ss.ofd, fileno(stdin), OSMO_FD_READ, &stdin_fd_cb, &ss, 0);
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osmo_fd_register(&ss.ofd);
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ss.bc = bc;
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while (1) {
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osmo_select_main(0);
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