[tcat] implement get diagnostic tlvs in command class commissioning (#11163)

Adds implementation of Tcat TLV 0x26 Get Diagnostic TLVs.
It also adds support for long BleSecure messages >1280 bytes in BleSecure::Flush(void).

tools/tcat_ble_client/cli/base_commands.py

@@ -33,6 +33,7 @@ from ble.ble_stream import BleStream
 from ble.ble_stream_secure import BleStreamSecure
 from ble import ble_scanner
 from tlv.tlv import TLV
+from tlv.diagnostic_tlv import DiagnosticTLVType
 from tlv.tcat_tlv import TcatTLVType
 from cli.command import Command, CommandResultNone, CommandResultTLV
 from dataset.dataset import ThreadDataset
@@ -386,6 +387,31 @@ class ScanCommand(Command):
         return CommandResultNone()
 
 
+class DiagnosticTlvsCommand(BleCommand):
+
+    def get_log_string(self) -> str:
+        return 'Retrieving diagnostic information.'
+
+    def get_help_string(self) -> str:
+        return 'Get diagnostic TLVs from the TCAT device.'
+
+    def prepare_data(self, args, context):
+        num_args = DiagnosticTLVType.names_to_numbers(args)
+        try:
+            if not num_args:
+                raise ValueError()
+            vals = [int(x) for x in num_args]
+            tlvs = bytes(vals)
+        except ValueError:
+            print('Please provide a list of diagnostic TLV types as names or numbers')
+            print('TLV Types:')
+            for key, value in DiagnosticTLVType.get_dict().items():
+                print(f'{key} = {value},')
+            raise DataNotPrepared()
+
+        return TLV(TcatTLVType.GET_DIAGNOSTIC_TLVS.value, tlvs).to_bytes()
+
+
 class ThreadStartCommand(BleCommand):
 
     def get_log_string(self) -> str:

tools/tcat_ble_client/cli/cli.py

@@ -32,7 +32,8 @@ from ble.ble_stream_secure import BleStreamSecure
 from cli.base_commands import (DisconnectCommand, HelpCommand, HelloCommand, CommissionCommand, DecommissionCommand,
                                ExtractDatasetCommand, GetCommissionerCertificate, GetDeviceIdCommand, GetPskdHash,
                                GetExtPanIDCommand, GetNetworkNameCommand, GetProvisioningUrlCommand, PingCommand,
-                               GetRandomNumberChallenge, ThreadStateCommand, ScanCommand, PresentHash)
+                               GetRandomNumberChallenge, ThreadStateCommand, ScanCommand, PresentHash,
+                               DiagnosticTlvsCommand)
 from .tlv_commands import TlvCommand
 from cli.dataset_commands import (DatasetCommand)
 from dataset.dataset import ThreadDataset
@@ -65,6 +66,7 @@ class CLI:
             'peer_pskd_hash': GetPskdHash(),
             'tlv': TlvCommand(),
             'get_comm_cert': GetCommissionerCertificate(),
+            'diagnostic_tlvs': DiagnosticTlvsCommand()
         }
         self._context = {
             'ble_sstream': ble_sstream,

tools/tcat_ble_client/tlv/diagnostic_tlv.py

@@ -0,0 +1,71 @@
+"""
+  Copyright (c) 2025, The OpenThread Authors.
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+  3. Neither the name of the copyright holder nor the
+     names of its contributors may be used to endorse or promote products
+     derived from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+"""
+
+
+class DiagnosticTLVType:
+
+    def __init__(self):
+        self._tlv_dict = {
+            'extaddr': '0',
+            'macaddr': '1',
+            'mode': '2',
+            'timeout': '3',
+            'connectivity': '4',
+            'route64': '5',
+            'leaderdata': '6',
+            'networkdata': '7',
+            'ipaddr': '8',
+            'maccounters': '9',
+            'batterylevel': '14',
+            'supplyvoltage': '15',
+            'childtable': '16',
+            'channelpages': '17',
+            'maxchildtimeout': '19',
+            'eui64': '23',
+            'version': '24',
+            'vendorname': '25',
+            'vendormodel': '26',
+            'vendorswversion': '27',
+            'threadstackversion': '28',
+            'child': '29',
+            'childipv6list': '30',
+            'routerneighbor': '31',
+            'mlecounters': '34',
+            'vendorappurl': '35',
+            'channeldenylist': '36'
+        }
+
+    @staticmethod
+    def names_to_numbers(args):
+        res = DiagnosticTLVType()
+        return [x if x not in res._tlv_dict else res._tlv_dict[x] for x in args]
+
+    @staticmethod
+    def get_dict():
+        res = DiagnosticTLVType()
+        return res._tlv_dict

tools/tcat_ble_client/tlv/tcat_tlv.py

@@ -45,6 +45,7 @@ class TcatTLVType(Enum):
     ACTIVE_DATASET = 0x20
     GET_COMMISSIONER_CERTIFICATE = 0x25
     GET_ACTIVE_DATASET = 0x40
+    GET_DIAGNOSTIC_TLVS = 0x26
     DECOMMISSION = 0x60
     APPLICATION = 0x82
     THREAD_START = 0x27