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monitor: Improve decoding of ATT Read by Group Type Respose

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The group data is as follow:

Attribute Handle (2 octets) End Group Handle (2 octets) Attribute Value
(Length - 4) octets

But since only primary and secondary can be used in ATT Read by Group
Type Request the value is garanteed to be a UUID:

< ACL Data TX: Handle 3585 flags 0x00 dlen 24
      ATT: Read By Group Type Response (0x11) len 19
        Attribute data length: 6
        Attribute group list: 3 entries
        Handle range: 0x0001-0x0005
        UUID: Generic Access Profile (0x1800)
        Handle range: 0x0006-0x000d
        UUID: Heart Rate (0x180d)
        Handle range: 0x000e-0x0011
        UUID: Battery Service (0x180f)
This commit is contained in:
Luiz Augusto von Dentz 2015-05-24 16:15:11 +03:00 committed by Johan Hedberg
parent dd776b21c3
commit 4d3458a1a6
1 changed files with 24 additions and 1 deletions
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25
monitor/l2cap.c
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@ -2217,12 +2217,35 @@ static void att_read_group_type_req(const struct l2cap_frame *frame)
print_uuid("Attribute group type", frame->data + 4, frame->size - 4);
}
static void print_group_list(const char *label, uint8_t length,
const void *data, uint16_t size)
{
uint8_t count;
if (length == 0)
return;
count = size / length;
print_field("%s: %u entr%s", label, count, count == 1 ? "y" : "ies");
while (size >= length) {
print_handle_range("Handle range", data);
print_uuid("UUID", data + 4, length - 4);
data += length;
size -= length;
}
packet_hexdump(data, size);
}
static void att_read_group_type_rsp(const struct l2cap_frame *frame)
{
const struct bt_l2cap_att_read_group_type_rsp *pdu = frame->data;
print_field("Attribute data length: %d", pdu->length);
print_data_list("Attribute data list", pdu->length,
print_group_list("Attribute group list", pdu->length,
frame->data + 1, frame->size - 1);
}