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change att write callback API to allow for invalid offset error

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matthias.ringwald@gmail.com 2014-01-26 22:41:13 +00:00
parent 617cd07ca8
commit a0ae0a6911
3 changed files with 18 additions and 11 deletions

6
ble/att.c

@ -855,9 +855,9 @@ static uint16_t handle_prepare_write_request(att_connection_t * att_connection,
return setup_error(response_buffer, ATT_PREPARE_WRITE_REQUEST, handle, error_code);
}
ok = (*att_write_callback)(handle, ATT_TRANSACTION_MODE_ACTIVE, offset, request_buffer + 3, request_len - 3, NULL);
if (!ok){
return setup_error(response_buffer, ATT_PREPARE_WRITE_REQUEST, handle, ATT_ERROR_PREPARE_QUEUE_FULL);
int result = (*att_write_callback)(handle, ATT_TRANSACTION_MODE_ACTIVE, offset, request_buffer + 3, request_len - 3, NULL);
if (result){
return setup_error(response_buffer, ATT_PREPARE_WRITE_REQUEST, handle, result);
}
// response: echo request

2
ble/att.h

@ -161,7 +161,7 @@ typedef uint16_t (*att_read_callback_t)(uint16_t handle, uint16_t offset, uint8_
// @param buffer
// @param buffer_size
// @param signature used for signed write commmands
// @returns 1 if request could be queue for ATT_TRANSACTION_MODE_ACTIVE
// @returns 0 if write was ok, ATT_ERROR_PREPARE_QUEUE_FULL if no space in queue, ATT_ERROR_INVALID_OFFSET if offset is larger than max buffer
typedef int (*att_write_callback_t)(uint16_t handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size, signature_t * signature);
// MARK: ATT Operations

21
example/libusb/ble_peripheral.c

@ -299,7 +299,7 @@ static int att_write_callback(uint16_t handle, uint16_t transaction_mode, uint16
client_configuration = buffer[0];
client_configuration_handle = handle;
printf("Client Configuration set to %u for handle %04x\n", client_configuration, handle);
return 1;
return 0; // ok
default:
break;
}
@ -312,7 +312,7 @@ static int att_write_callback(uint16_t handle, uint16_t transaction_mode, uint16
attributes_index = att_attribute_for_handle(handle);
if (attributes_index < 0){
attributes_index = att_attribute_for_handle(0);
if (attributes_index < 0) return 0; // fail
if (attributes_index < 0) return 0; // ok, but we couldn't store it (our fault)
att_attributes[attributes_index].handle = handle;
}
att_attributes[attributes_index].len = buffer_size;
@ -320,30 +320,35 @@ static int att_write_callback(uint16_t handle, uint16_t transaction_mode, uint16
break;
case ATT_TRANSACTION_MODE_ACTIVE:
writes_index = att_write_queue_for_handle(handle);
if (writes_index < 0) return 0;
if (buffer_size + offset > ATT_VALUE_MAX_LEN) return 0;
if (writes_index < 0) return ATT_ERROR_PREPARE_QUEUE_FULL;
if (offset > ATT_VALUE_MAX_LEN) return ATT_ERROR_INVALID_OFFSET;
if (buffer_size + offset > ATT_VALUE_MAX_LEN) {
// truncat value
buffer_size = ATT_VALUE_MAX_LEN - offset;
}
att_write_queues[writes_index].len = buffer_size + offset;
memcpy(&(att_write_queues[writes_index].value[offset]), buffer, buffer_size);
break;
case ATT_TRANSACTION_MODE_EXECUTE:
for (writes_index=0;writes_index<ATT_NUM_WRITE_QUEUES;writes_index++){
for (writes_index=0 ; writes_index<ATT_NUM_WRITE_QUEUES ; writes_index++){
handle = att_write_queues[writes_index].handle;
if (handle == 0) continue;
attributes_index = att_attribute_for_handle(handle);
if (attributes_index < 0){
attributes_index = att_attribute_for_handle(0);
if (attributes_index < 0) return 0; // fail
if (attributes_index < 0) continue;
att_attributes[attributes_index].handle = handle;
}
att_attributes[attributes_index].len = att_write_queues[writes_index].len;
memcpy(att_attributes[attributes_index].value, att_write_queues[writes_index].value, att_write_queues[writes_index].len);
}
att_write_queue_init();
break;
case ATT_TRANSACTION_MODE_CANCEL:
att_write_queue_init();
break;
}
return 1;
return 0;
}
#ifndef SKIP_ADVERTISEMENT_PARAMAS_UPDATE
@ -454,6 +459,8 @@ static void app_packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *
if (!advertisements_enabled == 0 && gap_discoverable){
todos = ENABLE_ADVERTISEMENTS;
}
att_attributes_init();
att_write_queue_init();
break;
case SM_PASSKEY_INPUT_NUMBER: {