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l2cap: setup test channels for fuzzer

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This commit is contained in:
Matthias Ringwald 2023-12-30 17:40:16 +01:00
parent 182d886d47
commit 77a7418aca
1 changed files with 46 additions and 0 deletions

46
src/l2cap.c

@ -5798,3 +5798,49 @@ uint8_t l2cap_le_disconnect(uint16_t local_cid){
return l2cap_disconnect(local_cid);
}
#endif
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
static void fuzz_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) {
}
void l2cap_setup_test_channels_fuzz(void) {
bd_addr_t address;
l2cap_channel_t * channel;
// 0x41 1setup classic basic
channel = l2cap_create_channel_entry(fuzz_packet_handler, L2CAP_CHANNEL_TYPE_CLASSIC, address,
BD_ADDR_TYPE_ACL, 0x01, 100, LEVEL_4);
btstack_linked_list_add_tail(&l2cap_channels, (btstack_linked_item_t *) channel);
// 0x42 setup le cbm
channel = l2cap_create_channel_entry(fuzz_packet_handler, L2CAP_CHANNEL_TYPE_CHANNEL_CBM, address,
BD_ADDR_TYPE_LE_PUBLIC, 0x03, 100, LEVEL_4);
btstack_linked_list_add_tail(&l2cap_channels, (btstack_linked_item_t *) channel);
// 0x43 setup le ecbm
channel = l2cap_create_channel_entry(fuzz_packet_handler, L2CAP_CHANNEL_TYPE_CHANNEL_ECBM,
address, BD_ADDR_TYPE_LE_PUBLIC, 0x05, 100, LEVEL_4);
btstack_linked_list_add_tail(&l2cap_channels, (btstack_linked_item_t *) channel);
}
void l2cap_free_channels_fuzz(void){
btstack_linked_list_iterator_t it;
btstack_linked_list_iterator_init(&it, &l2cap_channels);
while (btstack_linked_list_iterator_has_next(&it)){
l2cap_channel_t * channel = (l2cap_channel_t*) btstack_linked_list_iterator_next(&it);
bool fixed_channel = false;
switch (channel->channel_type) {
case L2CAP_CHANNEL_TYPE_FIXED_LE:
case L2CAP_CHANNEL_TYPE_FIXED_CLASSIC:
case L2CAP_CHANNEL_TYPE_CONNECTIONLESS:
fixed_channel = true;
break;
default:
break;
}
if (fixed_channel == false) {
btstack_linked_list_iterator_remove(&it);
btstack_memory_l2cap_channel_free(channel);
}
}
}
#endif