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Error check number of characteristics 

Currently it just blindly writes beyond the end of the array, leading to impossible-to-find bugs.

It doesn't help that the limit on the number of characteristics doesn't seem to be documented anywhere.
master
Tim 2015-09-29 15:04:59 +01:00
parent ad59bf4701
commit 4af5d03cd5
1 changed files with 9 additions and 4 deletions
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13
source/nRF5xGattServer.cpp
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@ -45,7 +45,6 @@ nRF5xGattServer &nRF5xGattServer::getInstance(void) {
/**************************************************************************/
ble_error_t nRF5xGattServer::addService(GattService &service)
{
/* ToDo: Make sure we don't overflow the array, etc. */
/* ToDo: Make sure this service UUID doesn't already exist (?) */
/* ToDo: Basic validation */
@ -63,7 +62,10 @@ ble_error_t nRF5xGattServer::addService(GattService &service)
/* Add characteristics to the service */
for (uint8_t i = 0; i < service.getCharacteristicCount(); i++) {
GattCharacteristic *p_char = service.getCharacteristic(i);
if (characteristicCount >= BLE_TOTAL_CHARACTERISTICS) {
return BLE_ERROR_NO_MEM;
}
GattCharacteristic *p_char = service.getCharacteristic(i);
/* Skip any incompletely defined, read-only characteristics. */
if ((p_char->getValueAttribute().getValuePtr() == NULL) &&
@ -108,9 +110,12 @@ ble_error_t nRF5xGattServer::addService(GattService &service)
characteristicCount++;
/* Add optional descriptors if any */
/* ToDo: Make sure we don't overflow the array */
for (uint8_t j = 0; j < p_char->getDescriptorCount(); j++) {
GattAttribute *p_desc = p_char->getDescriptor(j);
if (descriptorCount >= BLE_TOTAL_DESCRIPTORS) {
return BLE_ERROR_NO_MEM;
}
GattAttribute *p_desc = p_char->getDescriptor(j);
/* skip the user-description-descriptor here; this has already been handled when adding the characteristic (above). */
if (p_desc->getUUID() == BLE_UUID_DESCRIPTOR_CHAR_USER_DESC) {
continue;