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This will handle notification of call status to the rest of the system Dial Handling ============= The dial function sets up the parameters for the QMI_VOICE_DIAL_CALL service. The parameters are the number to be called and the call type, which is currently hard coded to be QMI_VOICE_CALL_TYPE_VOICE. The dial_cb callback will then be called and will receive the call-id. --- Changes in V4 -merged qmi_voice_call_status and all_call_status_ind -several minor structure/formate changes Changes in V5 -renames ofono_call_compare_by_id to ofono_call_match_by_id -updated new_entry pointer to fix use-after-free in ofono_call_list_notify -Renamed several constants -in all_call_status_ind removed error label/gotos after restructuring -When creating the call list, ensure an upper bound of 16 -Fix out-of-mound-read on remote number due to QMI string not being null terminated --- --- drivers/qmimodem/voice.h | 17 ++ drivers/qmimodem/voicecall.c | 426 ++++++++++++++++++++++++++++++++++- 2 files changed, 442 insertions(+), 1 deletion(-) diff --git a/drivers/qmimodem/voice.h b/drivers/qmimodem/voice.h index 917e72f7..2344fd50 100644 --- a/drivers/qmimodem/voice.h +++ b/drivers/qmimodem/voice.h @@ -48,6 +48,9 @@ enum qmi_ussd_user_required { /* QMI service voice. Using an enum to prevent doublicated entries */ enum voice_commands { + QMI_VOICE_DIAL_CALL = 0x20, + QMI_VOICE_ALL_CALL_STATUS_IND = 0x2e, + QMI_VOICE_GET_ALL_CALL_INFO = 0x2f, QMI_VOICE_SUPS_NOTIFICATION_IND = 0x32, QMI_VOICE_SET_SUPS_SERVICE = 0x33, QMI_VOICE_GET_CALL_WAITING = 0x34, @@ -66,6 +69,20 @@ enum voice_commands { QMI_VOICE_GET_CNAP = 0x4d }; +enum qmi_voice_call_state { + QMI_VOICE_CALL_STATE_IDLE = 0x0, + QMI_VOICE_CALL_STATE_ORIG, + QMI_VOICE_CALL_STATE_INCOMING, + QMI_VOICE_CALL_STATE_CONV, + QMI_VOICE_CALL_STATE_CC_IN_PROG, + QMI_VOICE_CALL_STATE_ALERTING, + QMI_VOICE_CALL_STATE_HOLD, + QMI_VOICE_CALL_STATE_WAITING, + QMI_VOICE_CALL_STATE_DISCONNECTING, + QMI_VOICE_CALL_STATE_END, + QMI_VOICE_CALL_STATE_SETUP +}; + struct qmi_ussd_data { uint8_t dcs; uint8_t length; diff --git a/drivers/qmimodem/voicecall.c b/drivers/qmimodem/voicecall.c index aa34fc25..7b4813c9 100644 --- a/drivers/qmimodem/voicecall.c +++ b/drivers/qmimodem/voicecall.c @@ -3,6 +3,7 @@ * oFono - Open Source Telephony * * Copyright (C) 2011-2012 Intel Corporation. All rights reserved. + * Copyright (C) 2024 Adam Pigg * * 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 @@ -26,6 +27,10 @@ #include #include #include +#include +#include + +#include "voice.h" #include "qmi.h" @@ -35,8 +40,422 @@ struct voicecall_data { struct qmi_service *voice; uint16_t major; uint16_t minor; + struct l_queue *call_list; + struct ofono_phone_number dialed; }; +struct qmi_voice_call_information_instance { + uint8_t id; + uint8_t state; + uint8_t type; + uint8_t direction; + uint8_t mode; + uint8_t multipart_indicator; + uint8_t als; +} __attribute__((__packed__)); + +struct qmi_voice_call_information { + uint8_t size; + struct qmi_voice_call_information_instance instance[0]; +} __attribute__((__packed__)); + +struct qmi_voice_remote_party_number_instance { + uint8_t call_id; + uint8_t presentation_indicator; + uint8_t number_size; + char number[0]; +} __attribute__((__packed__)); + +struct qmi_voice_remote_party_number { + uint8_t size; + struct qmi_voice_remote_party_number_instance instance[0]; +} __attribute__((__packed__)); + +static int ofono_call_compare(const void *a, const void *b, void *data) +{ + const struct ofono_call *ca = a; + const struct ofono_call *cb = b; + + if (ca->id < cb->id) + return -1; + + if (ca->id > cb->id) + return 1; + + return 0; +} + +static bool ofono_call_match_by_id(const void *a, const void *b) +{ + const struct ofono_call *call = a; + unsigned int id = L_PTR_TO_UINT(b); + + return (call->id == id); +} + +static void ofono_call_list_dial_callback(struct ofono_voicecall *vc, + int call_id) +{ + struct ofono_call *call; + struct voicecall_data *vd = ofono_voicecall_get_data(vc); + struct l_queue *call_list = vd->call_list; + const struct ofono_phone_number *ph = &vd->dialed; + + /* check if call_id already present */ + call = l_queue_find(call_list, ofono_call_match_by_id, + L_UINT_TO_PTR(call_id)); + + if (call) + return; + + call = l_new(struct ofono_call, 1); + call->id = call_id; + + memcpy(&call->called_number, ph, sizeof(*ph)); + call->direction = CALL_DIRECTION_MOBILE_ORIGINATED; + call->status = CALL_STATUS_DIALING; + call->type = 0; /* voice */ + + l_queue_insert(call_list, call, ofono_call_compare, NULL); + + ofono_voicecall_notify(vc, call); +} + +static void ofono_call_list_notify(struct ofono_voicecall *vc, + struct l_queue *calls) +{ + struct voicecall_data *vd = ofono_voicecall_get_data(vc); + struct l_queue *old_calls = vd->call_list; + struct l_queue *new_calls = calls; + struct ofono_call *new_call, *old_call; + const struct l_queue_entry *old_entry, *new_entry; + uint i; + + uint loop_length = + MAX(l_queue_length(old_calls), l_queue_length(new_calls)); + + old_entry = l_queue_get_entries(old_calls); + new_entry = l_queue_get_entries(new_calls); + + for (i = 0; i < loop_length; ++i) { + old_call = old_entry ? old_entry->data : NULL; + new_call = new_entry ? new_entry->data : NULL; + + if (new_call && new_call->status == CALL_STATUS_DISCONNECTED) { + ofono_voicecall_disconnected( + vc, new_call->id, + OFONO_DISCONNECT_REASON_REMOTE_HANGUP, NULL); + new_entry = new_entry->next; + l_queue_remove(calls, new_call); + l_free(new_call); + continue; + } + + if (old_call && + (!new_call || (new_call->id > old_call->id))) + ofono_voicecall_disconnected( + vc, old_call->id, + OFONO_DISCONNECT_REASON_REMOTE_HANGUP, NULL); + else if (new_call && + (!old_call || (new_call->id < old_call->id))) { + DBG("Notify new call %d", new_call->id); + /* new call, signal it */ + if (new_call->type == 0) + ofono_voicecall_notify(vc, new_call); + } else if (memcmp(new_call, old_call, sizeof(*new_call)) && + new_call->type == 0) + ofono_voicecall_notify(vc, new_call); + + if (old_entry) + old_entry = old_entry->next; + if (new_entry) + new_entry = new_entry->next; + } + + l_queue_destroy(old_calls, l_free); + vd->call_list = calls; +} + +static const char *qmi_voice_call_state_name(enum qmi_voice_call_state value) +{ + switch (value) { + case QMI_VOICE_CALL_STATE_IDLE: + return "QMI_VOICE_CALL_STATE_IDLE"; + case QMI_VOICE_CALL_STATE_ORIG: + return "QMI_VOICE_CALL_STATE_ORIG"; + case QMI_VOICE_CALL_STATE_INCOMING: + return "QMI_VOICE_CALL_STATE_INCOMING"; + case QMI_VOICE_CALL_STATE_CONV: + return "QMI_VOICE_CALL_STATE_CONV"; + case QMI_VOICE_CALL_STATE_CC_IN_PROG: + return "QMI_VOICE_CALL_STATE_CC_IN_PROG"; + case QMI_VOICE_CALL_STATE_ALERTING: + return "QMI_VOICE_CALL_STATE_ALERTING"; + case QMI_VOICE_CALL_STATE_HOLD: + return "QMI_VOICE_CALL_STATE_HOLD"; + case QMI_VOICE_CALL_STATE_WAITING: + return "QMI_VOICE_CALL_STATE_WAITING"; + case QMI_VOICE_CALL_STATE_DISCONNECTING: + return "QMI_VOICE_CALL_STATE_DISCONNECTING"; + case QMI_VOICE_CALL_STATE_END: + return "QMI_VOICE_CALL_STATE_END"; + case QMI_VOICE_CALL_STATE_SETUP: + return "QMI_VOICE_CALL_STATE_SETUP"; + } + return "QMI_CALL_STATE_"; +} + +static bool qmi_to_ofono_status(uint8_t status, int *ret) +{ + int err = false; + + switch (status) { + case QMI_VOICE_CALL_STATE_IDLE: + case QMI_VOICE_CALL_STATE_END: + case QMI_VOICE_CALL_STATE_DISCONNECTING: + *ret = CALL_STATUS_DISCONNECTED; + break; + case QMI_VOICE_CALL_STATE_HOLD: + *ret = CALL_STATUS_HELD; + break; + case QMI_VOICE_CALL_STATE_WAITING: + *ret = CALL_STATUS_WAITING; + break; + case QMI_VOICE_CALL_STATE_ORIG: + *ret = CALL_STATUS_DIALING; + break; + case QMI_VOICE_CALL_STATE_SETUP: + case QMI_VOICE_CALL_STATE_INCOMING: + *ret = CALL_STATUS_INCOMING; + break; + case QMI_VOICE_CALL_STATE_CONV: + *ret = CALL_STATUS_ACTIVE; + break; + case QMI_VOICE_CALL_STATE_CC_IN_PROG: + *ret = CALL_STATUS_DIALING; + break; + case QMI_VOICE_CALL_STATE_ALERTING: + *ret = CALL_STATUS_ALERTING; + break; + default: + err = true; + } + return err; +} + +static enum call_direction qmi_to_ofono_direction(uint8_t qmi_direction) +{ + return qmi_direction - 1; +} + +static void all_call_status_ind(struct qmi_result *result, void *user_data) +{ + struct ofono_voicecall *vc = user_data; + + int i; + int offset; + uint16_t len; + bool status = true; + int instance_size; + const struct qmi_voice_call_information *call_information; + const struct qmi_voice_remote_party_number *remote_party_number; + const struct qmi_voice_remote_party_number_instance *remote_party_number_inst[16]; + + static const uint8_t RESULT_CALL_STATUS_CALL_INFORMATION = 0x01; + static const uint8_t RESULT_CALL_STATUS_REMOTE_NUMBER = 0x10; + static const uint8_t RESULT_CALL_INFO_CALL_INFORMATION = 0x10; + static const uint8_t RESULT_CALL_INFO_REMOTE_NUMBER = 0x11; + + DBG(""); + + /* mandatory */ + call_information = qmi_result_get( + result, RESULT_CALL_STATUS_CALL_INFORMATION, &len); + + if (!call_information) { + call_information = qmi_result_get( + result, RESULT_CALL_INFO_CALL_INFORMATION, + &len); + status = false; + } + + if (!call_information || len < sizeof(call_information->size)) { + DBG("Parsing of all call status indication failed"); + return; + } + + if (!call_information->size) { + DBG("No call informations received!"); + return; + } + + if (len != call_information->size * + sizeof(struct qmi_voice_call_information_instance) + + sizeof(call_information->size)) { + DBG("Call information size incorrect"); + return; + } + + /* mandatory */ + remote_party_number = qmi_result_get( + result, + status ? RESULT_CALL_STATUS_REMOTE_NUMBER : + RESULT_CALL_INFO_REMOTE_NUMBER, + &len); + + if (!remote_party_number) { + DBG("Unable to retrieve remote numbers"); + return; + } + + /* verify the length */ + if (len < sizeof(remote_party_number->size)) { + DBG("Parsing of remote numbers failed"); + return; + } + + /* expect we have valid fields for every call */ + if (call_information->size != remote_party_number->size) { + DBG("Not all fields have the same size"); + return; + } + + /* pull the remote call info into a local array */ + instance_size = sizeof(struct qmi_voice_remote_party_number_instance); + + for (i = 0, offset = sizeof(remote_party_number->size); + offset < len && i < 16 && i < remote_party_number->size; + i++) { + const struct qmi_voice_remote_party_number_instance *instance; + + if (offset + instance_size > len) { + DBG("Error parsing remote numbers"); + return; + } + + instance = (void *)remote_party_number + offset; + if (offset + instance_size + instance->number_size > len) { + DBG("Error parsing remote numbers"); + return; + } + + remote_party_number_inst[i] = instance; + offset += + sizeof(struct qmi_voice_remote_party_number_instance) + + instance->number_size; + } + + struct l_queue *calls = l_queue_new(); + + for (i = 0; i < call_information->size && i < 16; i++) { + struct ofono_call *call = l_new(struct ofono_call, 1); + struct qmi_voice_call_information_instance call_info; + const struct qmi_voice_remote_party_number_instance + *remote_party = remote_party_number_inst[i]; + int number_size; + + call_info = call_information->instance[i]; + + call->id = call_info.id; + call->direction = qmi_to_ofono_direction(call_info.direction); + call->type = 0; /* always voice */ + + number_size = MIN(remote_party->number_size, OFONO_MAX_PHONE_NUMBER_LENGTH); + char *tmp = l_strndup(remote_party->number, number_size); + l_strlcpy(call->phone_number.number, tmp, sizeof(call->phone_number.number)); + l_free(tmp); + + if (strlen(call->phone_number.number) > 0) + call->clip_validity = 0; + else + call->clip_validity = 2; + + if (qmi_to_ofono_status(call_info.state, &call->status)) { + DBG("Ignore call id %d, because can not convert QMI state 0x%x to ofono.", + call_info.id, call_info.state); + l_free(call); + continue; + } + + DBG("Call %d in state %s(%d)", call_info.id, + qmi_voice_call_state_name(call_info.state), + call_info.state); + + l_queue_push_tail(calls, call); + } + + ofono_call_list_notify(vc, calls); +} + +static void dial_cb(struct qmi_result *result, void *user_data) +{ + struct cb_data *cbd = user_data; + struct ofono_voicecall *vc = cbd->user; + ofono_voicecall_cb_t cb = cbd->cb; + uint16_t error; + uint8_t call_id; + + static const uint8_t RESULT_CALL_ID = 0x10; + + DBG(""); + + if (qmi_result_set_error(result, &error)) { + DBG("QMI Error %d", error); + CALLBACK_WITH_FAILURE(cb, cbd->data); + return; + } + + if (!qmi_result_get_uint8(result, RESULT_CALL_ID, + &call_id)) { + ofono_error("No call id in dial result"); + CALLBACK_WITH_FAILURE(cb, cbd->data); + return; + } + + DBG("New call QMI id %d", call_id); + ofono_call_list_dial_callback(vc, call_id); + + CALLBACK_WITH_SUCCESS(cb, cbd->data); +} + +static void dial(struct ofono_voicecall *vc, + const struct ofono_phone_number *ph, + enum ofono_clir_option clir, ofono_voicecall_cb_t cb, + void *data) +{ + struct voicecall_data *vd = ofono_voicecall_get_data(vc); + struct cb_data *cbd = cb_data_new(cb, data); + struct qmi_param *param; + const char *calling_number = phone_number_to_string(ph); + + static const uint8_t PARAM_CALL_NUMBER = 0x01; + static const uint8_t PARAM_CALL_TYPE = 0x10; + static const uint8_t QMI_VOICE_CALL_TYPE_VOICE = 0x00; + + DBG(""); + + cbd->user = vc; + memcpy(&vd->dialed, ph, sizeof(*ph)); + + param = qmi_param_new(); + + if (!qmi_param_append(param, PARAM_CALL_NUMBER, + strlen(calling_number), calling_number)) + goto error; + + qmi_param_append_uint8(param, PARAM_CALL_TYPE, + QMI_VOICE_CALL_TYPE_VOICE); + + if (qmi_service_send(vd->voice, QMI_VOICE_DIAL_CALL, param, dial_cb, + cbd, l_free) > 0) + return; + +error: + CALLBACK_WITH_FAILURE(cb, data); + l_free(cbd); + l_free(param); +} + static void create_voice_cb(struct qmi_service *service, void *user_data) { struct ofono_voicecall *vc = user_data; @@ -58,6 +477,9 @@ static void create_voice_cb(struct qmi_service *service, void *user_data) data->voice = qmi_service_ref(service); + qmi_service_register(data->voice, QMI_VOICE_ALL_CALL_STATUS_IND, + all_call_status_ind, vc, NULL); + ofono_voicecall_register(vc); } @@ -70,6 +492,7 @@ static int qmi_voicecall_probe(struct ofono_voicecall *vc, DBG(""); data = l_new(struct voicecall_data, 1); + data->call_list = l_queue_new(); ofono_voicecall_set_data(vc, data); @@ -77,7 +500,6 @@ static int qmi_voicecall_probe(struct ofono_voicecall *vc, create_voice_cb, vc, NULL); return 0; - } static void qmi_voicecall_remove(struct ofono_voicecall *vc) @@ -92,12 +514,14 @@ static void qmi_voicecall_remove(struct ofono_voicecall *vc) qmi_service_unref(data->voice); + l_queue_destroy(data->call_list, l_free); l_free(data); } static const struct ofono_voicecall_driver driver = { .probe = qmi_voicecall_probe, .remove = qmi_voicecall_remove, + .dial = dial, }; OFONO_ATOM_DRIVER_BUILTIN(voicecall, qmimodem, &driver)