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ad_parser: avoid infinite loop on (illegal) chunk len of 0xff

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This commit is contained in:
Matthias Ringwald 2016-03-20 22:11:17 +01:00
parent aedec01ab0
commit a0a9372732
1 changed files with 7 additions and 2 deletions
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9
src/ble/ad_parser.c
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@ -72,8 +72,13 @@ int ad_iterator_has_more(ad_context_t * context){
}
void ad_iterator_next(ad_context_t * context){
uint8_t chunk_len = context->data[context->offset];
context->offset += 1 + chunk_len;
int chunk_len = context->data[context->offset];
int new_offset = context->offset + 1 + chunk_len;
// avoid uint8_t overrun
if (new_offset > 0xff){
new_offset = 0xff;
}
context->offset = new_offset;
}
uint8_t ad_iterator_get_data_len(ad_context_t * context){