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prevent crash on "call system send" with no data

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proddy
2020-11-22 21:13:04 +01:00
parent 59c72f7b4b
commit 17cd200cd1
1 changed files with 4 additions and 0 deletions
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4
src/telegram.cpp
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@@ -508,6 +508,10 @@ void TxService::read_request(const uint16_t type_id, const uint8_t dest, const u
// Send a raw telegram to the bus, telegram is a text string of hex values // Send a raw telegram to the bus, telegram is a text string of hex values
void TxService::send_raw(const char * telegram_data) { void TxService::send_raw(const char * telegram_data) {
if (telegram_data == nullptr) {
return;
}
// since the telegram data is a const, make a copy. add 1 to grab the \0 EOS // since the telegram data is a const, make a copy. add 1 to grab the \0 EOS
char telegram[EMS_MAX_TELEGRAM_LENGTH * 3]; char telegram[EMS_MAX_TELEGRAM_LENGTH * 3];
for (uint8_t i = 0; i < strlen(telegram_data); i++) { for (uint8_t i = 0; i < strlen(telegram_data); i++) {