From 6ada7d8bdc600f6fa236ffd12c03d3e3d74af6fe Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Thu, 12 Jan 2012 05:58:05 +0100 Subject: [PATCH] huaweimodem: Add support for USSD 8-bit PDU mode The Huawei devices support a special 8-bit PDU mode for USSD that is by default selected (AT^USSDMODE=1). It avoids the complicated logic for character set selection and conversion. --- Makefile.am | 1 + drivers/huaweimodem/huaweimodem.c | 2 + drivers/huaweimodem/huaweimodem.h | 3 + drivers/huaweimodem/ussd.c | 215 ++++++++++++++++++++++++++++++ 4 files changed, 221 insertions(+) create mode 100644 drivers/huaweimodem/ussd.c diff --git a/Makefile.am b/Makefile.am index 6ef8549a..b4adb6f6 100644 --- a/Makefile.am +++ b/Makefile.am @@ -189,6 +189,7 @@ builtin_modules += huaweimodem builtin_sources += drivers/atmodem/atutil.h \ drivers/huaweimodem/huaweimodem.h \ drivers/huaweimodem/huaweimodem.c \ + drivers/huaweimodem/ussd.c \ drivers/huaweimodem/voicecall.c \ drivers/huaweimodem/audio-settings.c \ drivers/huaweimodem/gprs-context.c \ diff --git a/drivers/huaweimodem/huaweimodem.c b/drivers/huaweimodem/huaweimodem.c index ac084c2d..7fd72fbc 100644 --- a/drivers/huaweimodem/huaweimodem.c +++ b/drivers/huaweimodem/huaweimodem.c @@ -34,6 +34,7 @@ static int huaweimodem_init(void) { + huawei_ussd_init(); huawei_voicecall_init(); huawei_audio_settings_init(); huawei_radio_settings_init(); @@ -52,6 +53,7 @@ static void huaweimodem_exit(void) huawei_radio_settings_exit(); huawei_audio_settings_exit(); huawei_voicecall_exit(); + huawei_ussd_exit(); } OFONO_PLUGIN_DEFINE(huaweimodem, "Huawei modem driver", VERSION, diff --git a/drivers/huaweimodem/huaweimodem.h b/drivers/huaweimodem/huaweimodem.h index 31ab9f96..00c1fa4c 100644 --- a/drivers/huaweimodem/huaweimodem.h +++ b/drivers/huaweimodem/huaweimodem.h @@ -21,6 +21,9 @@ #include +extern void huawei_ussd_init(void); +extern void huawei_ussd_exit(void); + extern void huawei_voicecall_init(void); extern void huawei_voicecall_exit(void); diff --git a/drivers/huaweimodem/ussd.c b/drivers/huaweimodem/ussd.c new file mode 100644 index 00000000..490aeb7a --- /dev/null +++ b/drivers/huaweimodem/ussd.c @@ -0,0 +1,215 @@ +/* + * + * oFono - Open Source Telephony + * + * Copyright (C) 2008-2011 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include +#include + +#include + +#include +#include +#include +#include "util.h" + +#include "gatchat.h" +#include "gatresult.h" + +#include "huaweimodem.h" + +static const char *cusd_prefix[] = { "+CUSD:", NULL }; +static const char *none_prefix[] = { NULL }; + +struct ussd_data { + GAtChat *chat; +}; + +static void cusd_parse(GAtResult *result, struct ofono_ussd *ussd) +{ + GAtResultIter iter; + int status, dcs; + const char *content; + unsigned char msg[160]; + const unsigned char *msg_ptr = NULL; + long msg_len; + + g_at_result_iter_init(&iter, result); + + if (!g_at_result_iter_next(&iter, "+CUSD:")) + return; + + if (!g_at_result_iter_next_number(&iter, &status)) + return; + + if (!g_at_result_iter_next_string(&iter, &content)) + goto out; + + if (!g_at_result_iter_next_number(&iter, &dcs)) + dcs = 0; + + msg_ptr = decode_hex_own_buf(content, -1, &msg_len, 0, msg); + +out: + ofono_ussd_notify(ussd, status, dcs, msg_ptr, msg_ptr ? msg_len : 0); +} + +static void cusd_request_cb(gboolean ok, GAtResult *result, gpointer user_data) +{ + struct cb_data *cbd = user_data; + ofono_ussd_cb_t cb = cbd->cb; + struct ofono_ussd *ussd = cbd->user; + struct ofono_error error; + + decode_at_error(&error, g_at_result_final_response(result)); + + cb(&error, cbd->data); + + cusd_parse(result, ussd); +} + +static void huawei_ussd_request(struct ofono_ussd *ussd, int dcs, + const unsigned char *pdu, int len, + ofono_ussd_cb_t cb, void *user_data) +{ + struct ussd_data *data = ofono_ussd_get_data(ussd); + struct cb_data *cbd = cb_data_new(cb, user_data); + char buf[512], coded_buf[321]; + char *converted; + + cbd->user = ussd; + + converted = encode_hex_own_buf(pdu, len, 0, coded_buf); + if (converted == NULL) + goto error; + + snprintf(buf, sizeof(buf), "AT+CUSD=1,\"%s\",%d", converted, dcs); + + if (g_at_chat_send(data->chat, buf, cusd_prefix, + cusd_request_cb, cbd, g_free) > 0) + return; + +error: + g_free(cbd); + + CALLBACK_WITH_FAILURE(cb, user_data); +} + +static void cusd_cancel_cb(gboolean ok, GAtResult *result, gpointer user_data) +{ + struct cb_data *cbd = user_data; + ofono_ussd_cb_t cb = cbd->cb; + struct ofono_error error; + + decode_at_error(&error, g_at_result_final_response(result)); + + cb(&error, cbd->data); +} + +static void huawei_ussd_cancel(struct ofono_ussd *ussd, + ofono_ussd_cb_t cb, void *user_data) +{ + struct ussd_data *data = ofono_ussd_get_data(ussd); + struct cb_data *cbd = cb_data_new(cb, user_data); + + cbd->user = data; + + if (g_at_chat_send(data->chat, "AT+CUSD=2", none_prefix, + cusd_cancel_cb, cbd, g_free) > 0) + return; + + g_free(cbd); + + CALLBACK_WITH_FAILURE(cb, user_data); +} + +static void cusd_notify(GAtResult *result, gpointer user_data) +{ + struct ofono_ussd *ussd = user_data; + + cusd_parse(result, ussd); +} + +static void cusd_register(gboolean ok, GAtResult *result, gpointer user_data) +{ + struct ofono_ussd *ussd = user_data; + struct ussd_data *data = ofono_ussd_get_data(ussd); + + if (!ok) { + ofono_error("Could not enable CUSD notifications"); + return; + } + + g_at_chat_register(data->chat, "+CUSD:", cusd_notify, + FALSE, ussd, NULL); + + ofono_ussd_register(ussd); +} + +static int huawei_ussd_probe(struct ofono_ussd *ussd, + unsigned int vendor, void *user) +{ + GAtChat *chat = user; + struct ussd_data *data; + + data = g_try_new0(struct ussd_data, 1); + if (data == NULL) + return -ENOMEM; + + data->chat = g_at_chat_clone(chat); + + ofono_ussd_set_data(ussd, data); + + g_at_chat_send(data->chat, "AT+CUSD=1", none_prefix, + cusd_register, ussd, NULL); + + return 0; +} + +static void huawei_ussd_remove(struct ofono_ussd *ussd) +{ + struct ussd_data *data = ofono_ussd_get_data(ussd); + + ofono_ussd_set_data(ussd, NULL); + + g_at_chat_unref(data->chat); + g_free(data); +} + +static struct ofono_ussd_driver driver = { + .name = "huaweimodem", + .probe = huawei_ussd_probe, + .remove = huawei_ussd_remove, + .request = huawei_ussd_request, + .cancel = huawei_ussd_cancel, +}; + +void huawei_ussd_init(void) +{ + ofono_ussd_driver_register(&driver); +} + +void huawei_ussd_exit(void) +{ + ofono_ussd_driver_unregister(&driver); +}