diff options
Diffstat (limited to 'src/libmsc/ussd.c')
-rw-r--r-- | src/libmsc/ussd.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/src/libmsc/ussd.c b/src/libmsc/ussd.c deleted file mode 100644 index 81a356690..000000000 --- a/src/libmsc/ussd.c +++ /dev/null @@ -1,103 +0,0 @@ -/* Network-specific handling of mobile-originated USSDs. */ - -/* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org> - * (C) 2008, 2009 by Holger Hans Peter Freyther <zecke@selfish.org> - * (C) 2009 by Mike Haben <michael.haben@btinternet.com> - * - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation; either version 3 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 Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * - */ - -/* This module defines the network-specific handling of mobile-originated - USSD messages. */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> - -#include <openbsc/gsm_04_80.h> -#include <openbsc/gsm_subscriber.h> -#include <openbsc/debug.h> -#include <openbsc/osmo_msc.h> -#include <openbsc/vlr.h> - -/* Declarations of USSD strings to be recognised */ -const char USSD_TEXT_OWN_NUMBER[] = "*#100#"; - -/* Forward declarations of network-specific handler functions */ -static int send_own_number(struct gsm_subscriber_connection *conn, const struct msgb *msg, const struct ss_request *req); - - -/* Entrypoint - handler function common to all mobile-originated USSDs */ -int handle_rcv_ussd(struct gsm_subscriber_connection *conn, struct msgb *msg) -{ - int rc; - struct ss_request req; - struct gsm48_hdr *gh; - - /* TODO: Use subscriber_connection ref-counting if we ever want - * to keep the connection alive due ot ongoing USSD exchange. - * As we answer everytying synchronously so far, there's no need - * yet */ - - cm_service_request_concludes(conn, msg); - - memset(&req, 0, sizeof(req)); - gh = msgb_l3(msg); - rc = gsm0480_decode_ss_request(gh, msgb_l3len(msg), &req); - if (!rc) { - DEBUGP(DMM, "Unhandled SS\n"); - rc = gsm0480_send_ussd_reject(conn, msg, &req); - return rc; - } - - /* Interrogation or releaseComplete? */ - if (req.ussd_text[0] == '\0' || req.ussd_text[0] == 0xFF) { - if (req.ss_code > 0) { - /* Assume interrogateSS or modification of it and reject */ - rc = gsm0480_send_ussd_reject(conn, msg, &req); - return rc; - } - /* Still assuming a Release-Complete and returning */ - return 0; - } - - msc_subscr_conn_communicating(conn); - if (!strcmp(USSD_TEXT_OWN_NUMBER, (const char *)req.ussd_text)) { - DEBUGP(DMM, "USSD: Own number requested\n"); - rc = send_own_number(conn, msg, &req); - } else { - DEBUGP(DMM, "Unhandled USSD %s\n", req.ussd_text); - rc = gsm0480_send_ussd_reject(conn, msg, &req); - } - - return rc; -} - -/* A network-specific handler function */ -static int send_own_number(struct gsm_subscriber_connection *conn, const struct msgb *msg, const struct ss_request *req) -{ - char *own_number = conn->vsub->msisdn; - char response_string[GSM_EXTENSION_LENGTH + 20]; - - DEBUGP(DMM, "%s: MSISDN = %s\n", vlr_subscr_name(conn->vsub), - own_number); - - /* Need trailing CR as EOT character */ - snprintf(response_string, sizeof(response_string), "Your extension is %s\r", own_number); - return gsm0480_send_ussd_response(conn, msg, response_string, req); -} |