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author | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2015-05-24 16:15:11 +0300 |
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committer | Johan Hedberg <johan.hedberg@intel.com> | 2015-05-24 18:31:53 +0300 |
commit | 4d3458a1a631bc572b0d689e722ed4c9d08b583b (patch) | |
tree | a3a201f2cdbd85f2a10a80b974c399c24ed3bf79 /monitor/l2cap.c | |
parent | dd776b21c35f6b9254446e839b9adfd862677d40 (diff) | |
download | bluez-4d3458a1a631bc572b0d689e722ed4c9d08b583b.tar.gz |
monitor: Improve decoding of ATT Read by Group Type Respose
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)
Diffstat (limited to 'monitor/l2cap.c')
-rw-r--r-- | monitor/l2cap.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/monitor/l2cap.c b/monitor/l2cap.c index 55efa542c..409f5f4e2 100644 --- a/monitor/l2cap.c +++ b/monitor/l2cap.c @@ -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); } |