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add functions to accept, decline, and return passkey

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matthias.ringwald@gmail.com 2013-11-29 13:57:12 +00:00
parent 8225f33562
commit f556090f1c
1 changed files with 102 additions and 9 deletions
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111
example/libusb/ble_server.c
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@ -107,6 +107,7 @@ typedef enum {
IO_CAPABILITY_KEYBOARD_ONLY,
IO_CAPABILITY_NO_INPUT_NO_OUTPUT,
IO_CAPABILITY_KEYBOARD_DISPLAY, // not used by secure simple pairing
IO_CAPABILITY_UNKNOWN = 0xff
} io_capability_t;
//
@ -137,6 +138,7 @@ typedef enum {
SM_STATE_PH1_SEND_PAIRING_RESPONSE,
SM_STATE_PH1_W4_PAIRING_CONFIRM,
SM_STATE_PH1_W4_USER_RESPONSE,
SM_STATE_SEND_PAIRING_FAILED,
SM_STATE_SEND_PAIRING_RANDOM,
@ -270,7 +272,7 @@ static uint8_t sm_preq[7];
static uint8_t sm_pres[7];
static uint8_t sm_s_auth_req = 0;
static uint8_t sm_s_io_capabilities = 0;
static uint8_t sm_s_io_capabilities = IO_CAPABILITY_UNKNOWN;
static key_t sm_s_random;
static key_t sm_s_confirm;
static key_t sm_stk;
@ -279,6 +281,15 @@ static uint8_t sm_pairing_failed_reason = 0;
static uint16_t sm_s_div;
static uint16_t sm_s_y;
typedef enum {
SM_USER_RESPONSE_IDLE,
SM_USER_RESPONSE_PENDING,
SM_USER_RESPONSE_CONFIRM,
SM_USER_RESPONSE_PASSKEY,
SM_USER_RESPONSE_DECLINE
} sm_user_response_t;
static uint8_t sm_user_response;
// key distribution, slave sends
static key_t sm_s_ltk;
static uint16_t sm_s_ediv;
@ -441,9 +452,16 @@ static void sm_s1_r_prime(key_t r1, key_t r2, key_t r_prime){
memcpy(&r_prime[0], &r1[8], 8);
}
static void sm_notify_client(sm_event_t * event){
static void sm_notify_client(uint8_t type, uint8_t addr_type, bd_addr_t address, uint32_t passkey){
sm_event_t event;
event.type = type;
event.addr_type = addr_type;
BD_ADDR_COPY(event.address, address);
event.passkey = passkey;
// dummy implementation
printf("sm_notify_client: event 0x%02x, addres_type %u, address (), num '%06u'", event->type, event->addr_type, event->passkey);
printf("sm_notify_client: event 0x%02x, addres_type %u, address (), num '%06u'", event.type, event.addr_type, event.passkey);
}
void sm_reset_tk(){
@ -522,6 +540,33 @@ static void sm_run(void){
l2cap_send_connectionless(sm_response_handle, L2CAP_CID_SECURITY_MANAGER_PROTOCOL, (uint8_t*) buffer, sizeof(buffer));
// notify client for: JUST WORKS confirm, PASSKEY display or input
sm_user_response = SM_USER_RESPONSE_IDLE;
switch (sm_stk_generation_method){
case PK_RESP_INPUT:
sm_user_response = SM_USER_RESPONSE_PENDING;
sm_notify_client(SM_PASSKEY_INPUT_NUMBER, sm_m_addr_type, sm_m_address, 0);
break;
case PK_INIT_INPUT:
sm_notify_client(SM_PASSKEY_DISPLAY_NUMBER, sm_m_addr_type, sm_m_address, READ_NET_32(sm_tk, 12));
break;
case JUST_WORKS:
switch (sm_s_io_capabilities){
case IO_CAPABILITY_KEYBOARD_DISPLAY:
case IO_CAPABILITY_DISPLAY_YES_NO:
sm_user_response = SM_USER_RESPONSE_PENDING;
sm_notify_client(SM_JUST_WORKS_REQUEST, sm_m_addr_type, sm_m_address, READ_NET_32(sm_tk, 12));
break;
default:
// cannot ask user
break;
}
break;
default:
break;
}
sm_state_responding = SM_STATE_PH1_W4_PAIRING_CONFIRM;
return;
}
@ -675,7 +720,7 @@ static void sm_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pac
// generate random number first, if we need to show passkey
if (sm_stk_generation_method == PK_INIT_INPUT){
sm_state_responding = SM_STATE_PH2_GET_RANDOM_TK;
break;;
break;
}
sm_state_responding = SM_STATE_PH1_SEND_PAIRING_RESPONSE;
@ -687,7 +732,20 @@ static void sm_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pac
// notify client to hide shown passkey
if (sm_stk_generation_method == PK_INIT_INPUT){
printf("close passkey display\n");
sm_notify_client(SM_PASSKEY_DISPLAY_CANCEL, sm_m_addr_type, sm_m_address, 0);
}
// handle user cancel pairing?
if (sm_user_response == SM_USER_RESPONSE_DECLINE){
sm_pairing_failed_reason = SM_REASON_PASSKEYT_ENTRY_FAILED;
sm_state_responding = SM_STATE_SEND_PAIRING_FAILED;
break;
}
// wait for user action?
if (sm_user_response == SM_USER_RESPONSE_PENDING){
sm_state_responding = SM_STATE_PH1_W4_USER_RESPONSE;
break;
}
// calculate and send s_confirm
@ -928,8 +986,8 @@ static void packet_handler (void * connection, uint8_t packet_type, uint16_t cha
sm_state_responding = SM_STATE_SEND_PAIRING_RANDOM;
break;
}
sm_state_responding = SM_STATE_SEND_PAIRING_FAILED;
sm_pairing_failed_reason = SM_REASON_CONFIRM_VALUE_FAILED;
sm_state_responding = SM_STATE_SEND_PAIRING_FAILED;
}
break;
case SM_STATE_PH2_W4_STK:
@ -1013,9 +1071,7 @@ static void packet_handler (void * connection, uint8_t packet_type, uint16_t cha
tk = tk - 999999;
}
sm_reset_tk();
net_store_32( sm_tk, 12, tk);
// notify client to show passkey
printf("show passkey %06u\n", tk);
net_store_32(sm_tk, 12, tk);
// continue with phase 1
sm_state_responding = SM_STATE_PH1_SEND_PAIRING_RESPONSE;
break;
@ -1265,6 +1321,43 @@ void sm_set_io_capabilities(io_capability_t io_capability){
sm_s_io_capabilities = io_capability;
}
int sm_get_connection(uint8_t addr_type, bd_addr_t address){
// TODO compare to current connection
return 1;
}
void sm_bonding_decline(uint8_t addr_type, bd_addr_t address){
if (!sm_get_connection(addr_type, address)) return; // wrong connection
sm_user_response = SM_USER_RESPONSE_DECLINE;
if (sm_state_responding == SM_STATE_PH1_W4_USER_RESPONSE){
sm_pairing_failed_reason = SM_REASON_PASSKEYT_ENTRY_FAILED;
sm_state_responding = SM_STATE_SEND_PAIRING_FAILED;
}
sm_run();
}
void sm_just_works_confirm(uint8_t addr_type, bd_addr_t address){
if (!sm_get_connection(addr_type, address)) return; // wrong connection
sm_user_response = SM_USER_RESPONSE_CONFIRM;
if (sm_state_responding == SM_STATE_PH1_W4_USER_RESPONSE){
sm_state_responding = SM_STATE_PH2_C1_GET_RANDOM_A;
}
sm_run();
}
void sm_passkey_input(uint8_t addr_type, bd_addr_t address, uint32_t passkey){
if (!sm_get_connection(addr_type, address)) return; // wrong connection
sm_reset_tk();
net_store_32(sm_tk, 12, passkey);
sm_user_response = SM_USER_RESPONSE_PASSKEY;
if (sm_state_responding == SM_STATE_PH1_W4_USER_RESPONSE){
sm_state_responding = SM_STATE_PH2_C1_GET_RANDOM_A;
}
sm_run();
}
// test profile
#include "profile.h"