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l2cap: streamline secure connections only mode

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If SC Only Mode is enabled, map all security levels to level 4 unless it is level 0
This commit is contained in:
Matthias Ringwald 2021-06-20 11:52:13 +02:00
parent bc00e12c3f
commit d7387af38d
2 changed files with 9 additions and 4 deletions
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3
src/hci.c
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@ -3503,6 +3503,9 @@ void gap_set_security_level(gap_security_level_t security_level){
}
gap_security_level_t gap_get_security_level(void){
if (hci_stack->gap_secure_connections_only_mode){
return LEVEL_4;
}
return hci_stack->gap_security_level;
}

10
src/l2cap.c
View File

@ -2360,8 +2360,7 @@ static void l2cap_handle_security_level(hci_con_handle_t handle, gap_security_le
switch (channel->state){
case L2CAP_STATE_WAIT_INCOMING_SECURITY_LEVEL_UPDATE:
if ((actual_level >= required_level) &&
((gap_get_secure_connections_only_mode() == false) || gap_secure_connection(channel->con_handle))){
if (actual_level >= required_level){
#ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE
// we need to know if ERTM is supported before sending a config response
hci_connection_t * connection = hci_connection_for_handle(channel->con_handle);
@ -2601,9 +2600,12 @@ static void l2cap_handle_connection_request(hci_con_handle_t handle, uint8_t sig
}
// alloc structure
// log_info("l2cap_handle_connection_request register channel");
gap_security_level_t required_level = service->required_security_level;
if (gap_get_secure_connections_only_mode() && (required_level != LEVEL_0)){
required_level = LEVEL_4;
}
l2cap_channel_t * channel = l2cap_create_channel_entry(service->packet_handler, L2CAP_CHANNEL_TYPE_CLASSIC, hci_connection->address, BD_ADDR_TYPE_ACL,
psm, service->mtu, service->required_security_level);
psm, service->mtu, required_level);
if (!channel){
// 0x0004 No resources available
l2cap_register_signaling_response(handle, CONNECTION_REQUEST, sig_id, source_cid, 0x0004);