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Notifications : Fix copy when the messages is spread across multiple os_mbuf.

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This commit is contained in:
JF 2020-10-22 10:43:42 +02:00
parent cabf1168d4
commit 07b6812f61
5 changed files with 28 additions and 23 deletions
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15
src/components/ble/AlertNotificationClient.cpp
View file

@ -105,18 +105,21 @@ int AlertNotificationClient::OnDescriptorDiscoveryEventCallback(uint16_t connect
void AlertNotificationClient::OnNotification(ble_gap_event *event) {
if(event->notify_rx.attr_handle == newAlertHandle) {
static constexpr size_t stringTerminatorSize{1}; // end of string '\0'
static constexpr size_t headerSize{3};
constexpr size_t stringTerminatorSize = 1; // end of string '\0'
constexpr size_t headerSize = 3;
const auto maxMessageSize {NotificationManager::MaximumMessageSize()};
const auto maxBufferSize{maxMessageSize + headerSize};
size_t bufferSize = min(OS_MBUF_PKTLEN(event->notify_rx.om) + stringTerminatorSize, maxBufferSize);
char *message = (char *)(&event->notify_rx.om[headerSize]);
const auto dbgPacketLen = OS_MBUF_PKTLEN(event->notify_rx.om);
size_t bufferSize = min(dbgPacketLen + stringTerminatorSize, maxBufferSize);
auto messageSize = min(maxMessageSize, (bufferSize-headerSize));
message[messageSize-1] = '\0';
NotificationManager::Notification notif;
os_mbuf_copydata(event->notify_rx.om, headerSize, messageSize-1, notif.message.data());
notif.message[messageSize-1] = '\0';
notif.category = Pinetime::Controllers::NotificationManager::Categories::SimpleAlert;
notificationManager.Push(std::move(notif));
notificationManager.Push(Pinetime::Controllers::NotificationManager::Categories::SimpleAlert, message, messageSize);
systemTask.PushMessage(Pinetime::System::SystemTask::Messages::OnNewNotification);
}
}

15
src/components/ble/AlertNotificationService.cpp
View file

@ -54,18 +54,21 @@ AlertNotificationService::AlertNotificationService ( System::SystemTask& systemT
int AlertNotificationService::OnAlert(uint16_t conn_handle, uint16_t attr_handle,
struct ble_gatt_access_ctxt *ctxt) {
if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
static constexpr size_t stringTerminatorSize{1}; // end of string '\0'
static constexpr size_t headerSize{3};
constexpr size_t stringTerminatorSize = 1; // end of string '\0'
constexpr size_t headerSize = 3;
const auto maxMessageSize {NotificationManager::MaximumMessageSize()};
const auto maxBufferSize{maxMessageSize + headerSize};
size_t bufferSize = min(OS_MBUF_PKTLEN(ctxt->om) + stringTerminatorSize, maxBufferSize);
char *message = (char *)(&ctxt->om->om_data[headerSize]);
const auto dbgPacketLen = OS_MBUF_PKTLEN(ctxt->om);
size_t bufferSize = min(dbgPacketLen + stringTerminatorSize, maxBufferSize);
auto messageSize = min(maxMessageSize, (bufferSize-headerSize));
message[messageSize-1] = '\0';
NotificationManager::Notification notif;
os_mbuf_copydata(ctxt->om, headerSize, messageSize-1, notif.message.data());
notif.message[messageSize-1] = '\0';
notif.category = Pinetime::Controllers::NotificationManager::Categories::SimpleAlert;
notificationManager.Push(std::move(notif));
notificationManager.Push(Pinetime::Controllers::NotificationManager::Categories::SimpleAlert, message, messageSize);
systemTask.PushMessage(Pinetime::System::SystemTask::Messages::OnNewNotification);
}
return 0;

8
src/components/ble/ImmediateAlertService.cpp
View file

@ -1,4 +1,5 @@
#include <systemtask/SystemTask.h>
#include <cstring>
#include "ImmediateAlertService.h"
#include "AlertNotificationService.h"
@ -67,7 +68,12 @@ int ImmediateAlertService::OnAlertLevelChanged(uint16_t connectionHandle, uint16
if(context->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
auto alertLevel = static_cast<Levels>(context->om->om_data[0]);
auto* alertString = ToString(alertLevel);
notificationManager.Push(Pinetime::Controllers::NotificationManager::Categories::SimpleAlert, alertString, strlen(alertString));
NotificationManager::Notification notif;
std::memcpy(notif.message.data(), alertString, strlen(alertString));
notif.category = Pinetime::Controllers::NotificationManager::Categories::SimpleAlert;
notificationManager.Push(std::move(notif));
systemTask.PushMessage(Pinetime::System::SystemTask::Messages::OnNewNotification);
}
}

11
src/components/ble/NotificationManager.cpp
View file

@ -7,17 +7,10 @@ using namespace Pinetime::Controllers;
constexpr uint8_t NotificationManager::MessageSize;
void NotificationManager::Push(Pinetime::Controllers::NotificationManager::Categories category,
const char *message, uint8_t currentMessageSize) {
// TODO handle edge cases on read/write index
auto checkedSize = std::min(currentMessageSize, MessageSize);
auto& notif = notifications[writeIndex];
std::memcpy(notif.message.data(), message, checkedSize);
notif.message[checkedSize] = '\0';
notif.category = category;
void NotificationManager::Push(NotificationManager::Notification &&notif) {
notif.id = GetNextId();
notif.valid = true;
notifications[writeIndex] = std::move(notif);
writeIndex = (writeIndex + 1 < TotalNbNotifications) ? writeIndex + 1 : 0;
if(!empty)
readIndex = (readIndex + 1 < TotalNbNotifications) ? readIndex + 1 : 0;

2
src/components/ble/NotificationManager.h
View file

@ -20,7 +20,7 @@ namespace Pinetime {
};
Notification::Id nextId {0};
void Push(Categories category, const char* message, uint8_t messageSize);
void Push(Notification&& notif);
Notification GetLastNotification();
Notification GetNext(Notification::Id id);
Notification GetPrevious(Notification::Id id);