mmgen-xmrwallet: new `abort` operation

mmgen/help/xmrwallet.py

@@ -53,6 +53,8 @@ relay     - relay a transaction from a transaction file created using ‘sweep
 submit    - submit an autosigned transaction to a wallet and the network
 resubmit  - resubmit most recently submitted autosigned transaction (other
             actions are required: see Exporting Outputs below)
+abort     - abort the current transaction created with --autosign.  The
+            transaction may be signed or unsigned
 txview    - display detailed information about a transaction file or files
 txlist    - same as above, but display terse information in tabular format
 dump      - produce JSON dumps of wallet metadata (accounts, addresses and

mmgen/main_xmrwallet.py

@@ -46,7 +46,7 @@ opts_data = {
 			'[opts] sweep    [xmr_keyaddrfile] SWEEP_SPEC',
 			'[opts] submit   [TX_file]',
 			'[opts] relay    <TX_file>',
-			'[opts] resubmit',
+			'[opts] resubmit | abort (for use with --autosign only)',
 			'[opts] txview | txlist [TX_file] ...',
 			'[opts] export-outputs    [wallets]',
 			'[opts] import-key-images [wallets]',
@@ -110,7 +110,7 @@ if cmd_args and cfg.autosign and (
 			MoneroWalletOps.kafile_arg_ops
 			+ ('export-outputs','import-key-images','txview','txlist')
 		)
-		or len(cmd_args) == 1 and cmd_args[0] in ('submit','resubmit')
+		or len(cmd_args) == 1 and cmd_args[0] in ('submit', 'resubmit', 'abort')
 	):
 	cmd_args.insert(1,None)
 
@@ -121,7 +121,7 @@ op     = cmd_args.pop(0)
 infile = cmd_args.pop(0)
 wallets = spec = None
 
-if op in ('relay','submit','resubmit'):
+if op in ('relay', 'submit', 'resubmit', 'abort'):
 	if len(cmd_args) != 0:
 		cfg._opts.usage()
 elif op in ('txview','txlist'):

mmgen/xmrwallet.py

@@ -629,6 +629,7 @@ class MoneroWalletOps:
 		'sign',
 		'submit',
 		'resubmit',
+		'abort',
 		'dump',
 		'restore',
 		'export_outputs',
@@ -1854,6 +1855,15 @@ class MoneroWalletOps:
 					key = lambda x: getattr(x.data,'submit_time',None) or x.data.create_time
 			)[-1]
 
+	class abort(base):
+		opts = ('watch_only','autosign')
+
+		def __init__(self, cfg, uarg_tuple):
+			super().__init__(cfg,uarg_tuple)
+			self.mount_removable_device()
+			from .autosign import Signable
+			Signable.xmr_transaction(self.asi).shred_abortable() # prompts user, then raises exception or exits
+
 	class dump(wallet):
 		wallet_offline = True
 

test/cmdtest_py_d/ct_xmr_autosign.py

@@ -73,7 +73,10 @@ class CmdTestXMRAutosign(CmdTestXMRWallet,CmdTestAutosignThreaded):
 		('export_outputs1',          'exporting outputs from Alice’s watch-only wallet #1'),
 		('import_key_images1',       'importing signed key images into Alice’s online wallets'),
 		('sync_chkbal1',             'syncing Alice’s wallet #1'),
+		('abort_tx1',                'aborting the current transaction (error)'),
 		('create_transfer_tx2',      'creating a transfer TX (for relaying via proxy)'),
+		('abort_tx2',                'aborting the current transaction (OK, unsigned)'),
+		('create_transfer_tx2a',     'creating the transfer TX again'),
 		('submit_transfer_tx2',      'submitting the transfer TX (relaying via proxy)'),
 		('sync_chkbal2',             'syncing Alice’s wallets and checking balance'),
 		('dump_wallets',             'dumping Alice’s wallets'),
@@ -248,12 +251,28 @@ class CmdTestXMRAutosign(CmdTestXMRWallet,CmdTestAutosignThreaded):
 		return self._create_transfer_tx('0.124')
 
 	def create_transfer_tx2(self):
-		self.do_mount_online()
-		get_file_with_ext(self.asi_online.xmr_tx_dir,'rawtx',delete_all=True)
-		get_file_with_ext(self.asi_online.xmr_tx_dir,'sigtx',delete_all=True)
-		self.do_umount_online()
 		return self._create_transfer_tx('0.257')
 
+	create_transfer_tx2a = create_transfer_tx2
+
+	def _abort_tx(self,expect,send=None,exit_val=None):
+		self.insert_device_online()
+		t = self.spawn('mmgen-xmrwallet', ['--autosign', 'abort'])
+		t.expect(expect)
+		if send:
+			t.send(send)
+		t.read() # required!
+		self.remove_device_online()
+		if exit_val:
+			t.req_exit_val = exit_val
+		return t
+
+	def abort_tx1(self):
+		return self._abort_tx('No unsent transactions present', exit_val=2)
+
+	def abort_tx2(self):
+		return self._abort_tx('(y/N): ', 'y')
+
 	def _xmr_autosign_op(
 			self,
 			op,