mirror of git://git.sysmocom.de/ofono
310 lines
6.5 KiB
C
310 lines
6.5 KiB
C
/*
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* This file is part of oFono - Open Source Telephony
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*
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* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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*
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* Contact: Aki Niemi <aki.niemi@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#define _GNU_SOURCE
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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 <sys/uio.h>
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#include <errno.h>
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#include <glib.h>
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#include <gisi/client.h>
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#include <ofono/log.h>
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#include <ofono/modem.h>
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#include <ofono/ussd.h>
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#include "smsutil.h"
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#include "util.h"
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#include "isimodem.h"
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#include "isiutil.h"
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#include "ss.h"
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#include "debug.h"
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struct ussd_data {
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GIsiClient *client;
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};
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static inline int isi_type_to_status(uint8_t type)
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{
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switch (type) {
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case SS_GSM_USSD_MT_REPLY:
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return OFONO_USSD_STATUS_LOCAL_CLIENT_RESPONDED;
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case SS_GSM_USSD_COMMAND:
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return OFONO_USSD_STATUS_ACTION_REQUIRED;
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case SS_GSM_USSD_NOTIFY:
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return OFONO_USSD_STATUS_NOTIFY;
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case SS_GSM_USSD_END:
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return OFONO_USSD_STATUS_TERMINATED;
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case SS_GSM_USSD_REQUEST:
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default:
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return OFONO_USSD_STATUS_NOT_SUPPORTED;
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}
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}
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static void ussd_parse(struct ofono_ussd *ussd, const void *restrict data,
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size_t len)
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{
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const unsigned char *msg = data;
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int status = OFONO_USSD_STATUS_NOT_SUPPORTED;
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char *converted = NULL;
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if (!msg || len < 4)
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goto out;
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status = isi_type_to_status(msg[2]);
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if (msg[3] == 0 || (size_t)(msg[3] + 4) > len)
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goto out;
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converted = ussd_decode(msg[1], msg[3], msg + 4);
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if (converted)
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status = OFONO_USSD_STATUS_NOTIFY;
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out:
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ofono_ussd_notify(ussd, status, converted);
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g_free(converted);
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}
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static gboolean ussd_send_resp_cb(GIsiClient *client,
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const void *restrict data, size_t len,
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uint16_t object, void *opaque)
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{
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const unsigned char *msg = data;
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struct isi_cb_data *cbd = opaque;
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ofono_ussd_cb_t cb = cbd->cb;
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if (!msg) {
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DBG("ISI client error: %d", g_isi_client_error(client));
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goto error;
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}
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if (len < 3)
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return FALSE;
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if (msg[0] == SS_SERVICE_FAILED_RESP)
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goto error;
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if (len < 4 || msg[0] != SS_GSM_USSD_SEND_RESP)
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return FALSE;
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CALLBACK_WITH_SUCCESS(cb, cbd->data);
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ussd_parse(cbd->user, data, len);
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goto out;
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error:
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CALLBACK_WITH_FAILURE(cb, cbd->data);
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out:
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g_free(cbd);
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return TRUE;
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}
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static GIsiRequest *ussd_send_make(GIsiClient *client, uint8_t *str,
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size_t len, void *data)
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{
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const uint8_t msg[] = {
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SS_GSM_USSD_SEND_REQ,
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SS_GSM_USSD_COMMAND,
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0x01, /* subblock count */
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SS_GSM_USSD_STRING,
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(4 + len + 3) & ~3, /* subblock length */
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0x0f, /* DCS */
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len, /* string length */
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/* USSD string goes here */
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};
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const struct iovec iov[2] = {
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{ (uint8_t *)msg, sizeof(msg) },
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{ str, len }
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};
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return g_isi_request_vmake(client, iov, 2, SS_TIMEOUT,
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ussd_send_resp_cb, data);
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}
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static void isi_request(struct ofono_ussd *ussd, const char *str,
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ofono_ussd_cb_t cb, void *data)
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{
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struct ussd_data *ud = ofono_ussd_get_data(ussd);
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struct isi_cb_data *cbd = isi_cb_data_new(ussd, cb, data);
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unsigned char buf[256];
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unsigned char *packed = NULL;
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unsigned char *converted = NULL;
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long num_packed;
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long written;
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if (!cbd)
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goto error;
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converted = convert_utf8_to_gsm(str, strlen(str), NULL, &written, 0);
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if (!converted)
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goto error;
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packed = pack_7bit_own_buf(converted, written, 0, TRUE,
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&num_packed, 0, buf);
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g_free(converted);
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if (written > SS_MAX_USSD_LENGTH)
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goto error;
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if (ussd_send_make(ud->client, packed, num_packed, cbd))
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return;
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error:
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CALLBACK_WITH_FAILURE(cb, data);
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g_free(cbd);
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}
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static void isi_cancel(struct ofono_ussd *ussd,
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ofono_ussd_cb_t cb, void *data)
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{
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struct ussd_data *ud = ofono_ussd_get_data(ussd);
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struct isi_cb_data *cbd = isi_cb_data_new(ussd, cb, data);
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const unsigned char msg[] = {
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SS_GSM_USSD_SEND_REQ,
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SS_GSM_USSD_END,
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0x00 /* subblock count */
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};
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if (!cbd)
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goto error;
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if (g_isi_request_make(ud->client, msg, sizeof(msg), SS_TIMEOUT,
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ussd_send_resp_cb, cbd))
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return;
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error:
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CALLBACK_WITH_FAILURE(cb, data);
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g_free(cbd);
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}
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static void ussd_ind_cb(GIsiClient *client,
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const void *restrict data, size_t len,
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uint16_t object, void *opaque)
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{
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const unsigned char *msg = data;
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struct ofono_ussd *ussd = opaque;
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if (!msg || len < 4 || msg[0] != SS_GSM_USSD_RECEIVE_IND)
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return;
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ussd_parse(ussd, data, len);
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}
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static gboolean isi_ussd_register(gpointer user)
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{
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struct ofono_ussd *ussd = user;
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struct ussd_data *ud = ofono_ussd_get_data(ussd);
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const char *debug = getenv("OFONO_ISI_DEBUG");
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if (debug && (strcmp(debug, "all") == 0 || strcmp(debug, "ussd") == 0))
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g_isi_client_set_debug(ud->client, ss_debug, NULL);
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g_isi_subscribe(ud->client, SS_GSM_USSD_RECEIVE_IND, ussd_ind_cb, ussd);
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ofono_ussd_register(ussd);
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return FALSE;
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}
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static void ussd_reachable_cb(GIsiClient *client,
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gboolean alive, uint16_t object,
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void *opaque)
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{
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struct ofono_ussd *ussd = opaque;
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if (!alive) {
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DBG("Unable to bootstrap ussd driver");
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return;
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}
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DBG("%s (v%03d.%03d) reachable",
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pn_resource_name(g_isi_client_resource(client)),
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g_isi_version_major(client),
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g_isi_version_minor(client));
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g_idle_add(isi_ussd_register, ussd);
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}
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static int isi_ussd_probe(struct ofono_ussd *ussd, unsigned int vendor,
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void *user)
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{
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GIsiModem *idx = user;
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struct ussd_data *ud = g_try_new0(struct ussd_data, 1);
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if (!ud)
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return -ENOMEM;
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ud->client = g_isi_client_create(idx, PN_SS);
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if (!ud->client)
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return -ENOMEM;
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ofono_ussd_set_data(ussd, ud);
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g_isi_verify(ud->client, ussd_reachable_cb, ussd);
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return 0;
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}
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static void isi_ussd_remove(struct ofono_ussd *ussd)
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{
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struct ussd_data *data = ofono_ussd_get_data(ussd);
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if (!data)
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return;
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ofono_ussd_set_data(ussd, NULL);
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g_isi_client_destroy(data->client);
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g_free(data);
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}
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static struct ofono_ussd_driver driver = {
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.name = "isimodem",
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.probe = isi_ussd_probe,
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.remove = isi_ussd_remove,
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.request = isi_request,
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.cancel = isi_cancel
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};
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void isi_ussd_init()
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{
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ofono_ussd_driver_register(&driver);
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}
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void isi_ussd_exit()
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{
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ofono_ussd_driver_unregister(&driver);
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}
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